Technical Field
[0001] The present invention relates to the technical field of leather manufacturing industry,
in particular to a leather-manufacturing rotary drum having an alternate hydrophilic
and hydrophobic surface structure. The invention is set out in the appended set of
claims.
Background Art
[0002] Leather manufacturing is a process of tanning hides and skins into leather, in which
hair and non-collagenous fibers, etc. are removed to moderately loosen, fix and strengthen
collagen fibers in dermis, and then a series of chemical (including biochemical) and
mechanical treatments such as finishing (trimming) are carried out. A leather manufacturing
process is generally divided into four stages, that is, preparation, tanning, post-tanning
and dry finishing. Since soaking, liming, dehairing, bating, pickling, tanning, dyeing,
fatliquoring, and other procedures are required to be completed in a rotary drum,
the rotary drum becomes an apparatus used mostly in the leather manufacturing process.
A mechanical action of the rotary drum promotes uniform permeation of various chemical
materials, such that a chemical action of preparations is applied on the hides and
skins.
[0003] In a current leather manufacturing process, absolute processing time for leather
manufacturing in a rotary drum accounts for 80% or more of the whole mechanical processing
time for leather manufacturing. Existing solutions for improving a leather-manufacturing
rotary drum mainly focus on an improvement of a stirring structure in the rotary drum
or of an operation environment. In this way, a mechanical action is enhanced to a
certain extent by increasing a rotational speed of the rotary drum or adding stirring
structures, so as to improve leather manufacturing efficiency and shorten processing
time. However, an over-strong mechanical action will cause excessive dispersion of
leather fibers, substantial reduction of physical and mechanical properties and high
energy consumption. In summary, there are two main shortcomings. On the one hand,
the stirring structures do not enhance mass transfer on a surface of leather in a
rising process. On the other hand, the stirring structures do not sufficiently stir
a bath liquid, which results in weak mechanical action and mass transfer action in
a leather manufacturing process, thereafter leads to long-time processing and high-energy
consumption of leather manufacturing.
[0004] Therefore, in a current rotary drum design, it is difficult to give consideration
to both effect and efficiency of leather manufacturing.
[0005] Patent document
CN 211 999 784 U discloses a sheep shearing leather tanning drum based on PLC control.
[0006] Patent document
EP 1 540 022 A1 discloses improvements in drums used for the treatment of skins, leathers and like,
which concern the shape and relative location of the shelves provided in such drums.
Summary
[0007] An embodiment of the present invention provides a leather-manufacturing rotary drum
having an alternate hydrophilic and hydrophobic surface structure, which can realize
a more efficient and greener leather manufacturing process without reducing the quality
of leather, and save time and costs, so as to solve the above problems.
[0008] In order to solve the above problem, an embodiment of the present invention provides
a leather-manufacturing rotary drum having an alternate hydrophilic and hydrophobic
surface structure. The rotary drum comprises:
a drum body capable of rotating in its own circumferential direction;
a stirring structure arranged in the drum body; and
an alternate hydrophilic and hydrophobic surface structure in which hydrophilic-material
surfaces and hydrophobic-material surfaces are alternately distributed, the alternate
hydrophilic and hydrophobic surface structure being distributed on a surface of an
inner wall of the drum body and/or a surface of the stirring structure,
wherein, in a rotating process of the drum body, the alternate hydrophilic and hydrophobic
surface structure repeatedly enters and leaves a bath liquid in the drum body.
[0009] Optionally, the alternate hydrophilic and hydrophobic surface structure is a structure
in which hydrophilic coatings and hydrophobic coatings are alternately distributed,
wherein:
the hydrophilic coatings are the hydrophilic-material surfaces and are formed by preparing
hydrophilic materials on the surface of the inner wall of the drum body and/or the
surface of the stirring structure; and
the hydrophobic coatings are the hydrophobic-material surfaces and are formed by preparing
hydrophobic materials on the surface of the inner wall of the drum body and/or the
surface of the stirring structure.
[0010] Optionally, the alternate hydrophilic and hydrophobic surface structure is a structure
in which hydrophilic coatings and polished original surfaces of the inner wall of
the drum body and/or the stirring structure are alternately distributed, wherein:
the hydrophilic coatings are the hydrophilic-material surfaces and are formed by preparing
hydrophilic materials on the surface of the inner wall of the drum body and/or the
surface of the stirring structure; and
the polished original surfaces of the inner wall of the drum body and/or the stirring
structure are the hydrophobic-material surfaces.
[0011] Optionally, the alternate hydrophilic and hydrophobic surface structure is a structure
formed by assembling a plurality of modularized hydrophilic and hydrophobic sheets,
wherein:
the hydrophilic and hydrophobic material are alternately distributed to form a sheet
with the hydrophilic-material and the hydrophobic-material, and the modularized hydrophilic
and hydrophobic sheets are then mounted in close contact with the surface of the inner
wall of the drum body and/or the surface of the stirring structure.
[0012] Optionally, the alternate hydrophilic and hydrophobic surface structure is a structure
in which modularized hydrophilic sheets and hydrophobic coatings are alternately distributed,
wherein:
outer surfaces of the hydrophilic sheets are the hydrophilic-material surfaces, and
the hydrophilic sheets are mounted in close contact with the surface of the inner
wall of the drum body and/or the surface of the stirring structure; and
the hydrophobic coatings are the hydrophobic-material surfaces and are formed by preparing
hydrophobic materials on the surface of the inner wall of the drum body and/or the
surface of the stirring structure.
[0013] Optionally, the alternate hydrophilic and hydrophobic surface structure is a structure
in which modularized hydrophilic sheets and polished original surfaces of the inner
wall of the drum body and/or the stirring structure are alternately distributed, wherein:
outer surfaces of the hydrophilic sheets are the hydrophilic-material surfaces, and
the hydrophilic sheets are mounted in close contact with the surface of the inner
wall of the drum body and/or the surface of the stirring structure; and
the polished original surfaces of the inner wall of the drum body and/or the stirring
structure are the hydrophobic-material surfaces.
[0014] Optionally, the alternate hydrophilic and hydrophobic surface structure is a structure
in which hydrophilic coatings and modularized hydrophobic sheets are alternately distributed,
wherein:
the hydrophilic coatings are the hydrophilic-material surfaces and are formed by preparing
hydrophilic materials on the surface of the inner wall of the drum body and/or the
surface of the stirring structure; and
outer surfaces of the hydrophobic sheets are the hydrophobic-material surfaces, and
the hydrophobic sheets are mounted in close contact with the surface of the inner
wall of the drum body and/or the surface of the stirring structure.
[0015] Optionally, the alternate hydrophilic and hydrophobic surface structure is a structure
in which modularized hydrophilic sheets and modularized hydrophobic sheets are alternately
distributed, wherein:
outer surfaces of the hydrophilic sheets are the hydrophilic-material surfaces, and
the hydrophilic sheets are mounted in close contact with the surface of the inner
wall of the drum body and/or the surface of the stirring structure; and
outer surfaces of the hydrophobic sheets are the hydrophobic-material surfaces, and
the hydrophobic sheets are mounted in close contact with the surface of the inner
wall of the drum body and/or the surface of the stirring structure.
[0016] Optionally, the stirring structure comprises baffles and/or protruding piles, and
in the rotating process of the drum body, the baffles and/or the protruding piles
repeatedly enter and leave the bath liquid in the drum body.
[0017] Optionally, when the stirring structure comprises both the baffles and the protruding
piles, the baffles and the protruding piles are alternately distributed along a circumferential
wall surface of the drum body.
[0018] The embodiments of the present invention have the following advantages:
the leather-manufacturing rotary drum in the embodiments of the present invention
comprises a drum body capable of rotating in its own circumferential direction, a
stirring structure arranged in the drum body, and an alternate hydrophilic and hydrophobic
surface structure in which hydrophilic-material surfaces and hydrophobic-material
surfaces are alternately distributed, the alternate hydrophilic and hydrophobic surface
structure being distributed on a surface of an inner wall of the drum body and/or
a surface of the stirring structure, wherein, in a rotating process of the drum body,
the alternate hydrophilic and hydrophobic surface structure repeatedly enters and
leaves a bath liquid in the drum body, so that a wetting behavior of the surface of
the inner wall of the drum body and/or the surface of the stirring structure can be
changed, so as to indirectly adjust a surface acting force between the inner wall
of the drum body and/or the stirring structure and leather, thereby achieving a gain
effect of optimizing a leather manufacturing process. Specifically, according to the
present invention, an effective action area during leather manufacturing is enlarged
and relative leather manufacturing time is prolonged without reducing the quality
of the leather, thereby realizing a more efficient leather manufacturing process,
and saving time and costs. Moreover, in a rotary leather manufacturing process of
the drum body, along with rotation of the rotary drum, when the surface of the inner
wall of the drum body and/or the surface of the stirring structure provided with the
alternate hydrophilic and hydrophobic surface structure enters and leaves the bath
liquid, a stirring action of the surface of the inner wall of the drum body and/or
the stirring structure on the bath liquid can be enhanced, such that flow of the bath
liquid on a surface of the leather is accelerated, permeation and mass transfer of
chemicals towards the interior of the leather are promoted, and acting time is shortened.
Brief Description of the Drawings
[0019] In order to more clearly describe the technical solution in the embodiments of the
present invention or in the prior art, a brief introduction to the accompanying drawings
required for the description of the embodiments or the prior art will be provided
below. Obviously, the accompanying drawings in the following description are merely
some embodiments of the present invention.
FIG. 1 is a schematic diagram of an overall structure of a leather-manufacturing rotary
drum having an alternate hydrophilic and hydrophobic surface structure in an embodiment
of the present invention;
FIG. 2 is a schematic structural diagram of a drum body with a circumferential inner
wall provided with both baffles and protruding piles in an embodiment of the present
invention;
FIG. 3 is a schematic structural diagram of an alternate hydrophilic and hydrophobic
surface structure only distributed on a surface of an inner wall of a drum body in
an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an alternate hydrophilic and hydrophobic
surface structure distributed on both a surface of an inner wall of a drum body and
a surface of a stirring structure in an embodiment of the present invention;
FIG. 5(a) is a schematic diagram of a gain principle of a baffle having an alternate
hydrophilic and hydrophobic surface structure leaving a bath liquid in an embodiment
of the present invention, and FIG. 5(b) is a schematic diagram of a gain principle
of a protruding pile having an alternate hydrophilic and hydrophobic surface structure
leaving a bath liquid in an embodiment of the present invention;
FIG. 6(a) is a schematic diagram of a gain principle of a baffle having an alternate
hydrophilic and hydrophobic surface structure entering a bath liquid in an embodiment
of the present invention, and FIG. 6(b) is a schematic diagram of a gain principle
of a protruding pile having an alternate hydrophilic and hydrophobic surface structure
entering a bath liquid in an embodiment of the present invention;
FIG. 7(a) is a schematic structural diagram of hydrophilic coatings and hydrophobic
coatings alternately arranged on a surface of a protruding pile in an embodiment of
the present invention, and FIG. 7(b) is a schematic structural diagram of hydrophilic
coatings and hydrophobic coatings alternately arranged on a surface of a baffle in
an embodiment of the present invention;
FIGS. 8(a) to 8(g) are schematic diagrams of hydrophilic and hydrophobic sheets with
hydrophilic-material surfaces and hydrophobic-material surfaces in different patterns
in embodiments of the present invention respectively;
FIG. 9(a) is a schematic structural diagram of hydrophilic and hydrophobic sheets
arranged on a surface of a protruding pile in an embodiment of the present invention,
and FIG. 9(b) is a schematic structural diagram of hydrophilic and hydrophobic sheets
arranged on a surface of a baffle in an embodiment of the present invention; and
FIGS. 10(a) to 10(g) are schematic structural diagrams of hydrophilic coatings and
hydrophobic coatings alternately arranged on a surface of a baffle in different patterns
and shapes in embodiments of the present invention respectively.
Description of Reference Numerals:
[0020] 1 - drum body; 2 - stirring structure, 21 - baffle, 22 - protruding pile; 3 - alternate
hydrophilic and hydrophobic surface structure, 31 - hydrophilic-material surface,
32 - hydrophobic-material surface; 4 - drum hoop; 5 - connecting retaining ring; 6
- supporting frame; 7 - bearing; 8 - drum main shaft; 9 - reinforced base plate; 10
- drum base plate; and 11 - drum door.
Detailed Description of Embodiments
[0021] The technical solutions in the embodiments of the present invention will be clearly
and completely described below with reference to the accompanying drawings in the
embodiments of the present invention. Obviously, the embodiments described are merely
some rather than all of the embodiments of the present invention.
[0022] Aiming at the technical problem of the present invention, the present invention provides
a leather-manufacturing rotary drum having an alternate hydrophilic and hydrophobic
surface structure. The alternate hydrophilic and hydrophobic surface structure 3 is
distributed on a surface of an inner wall of a drum body 1 of the leather-manufacturing
rotary drum and/or a surface of a stirring structure 2 in the drum body. Hydrophilic-material
surfaces 31 in the alternate hydrophilic and hydrophobic surface structure 3 may increase
an adhesive force to droplets, hydrophobic-material surfaces 32 may increase a driving
force for gathering droplets and promote more droplets to move to the hydrophilic-material
surfaces 31. However, according to the present invention, the hydrophilic and hydrophobic
surfaces are not directly used to simply change the characteristics of fluid, but
a surface acting force between the inner wall of the drum body 1 and/or the stirring
structure 2 and leather is indirectly adjusted by changing a wetting behavior of the
surface of the inner wall of the drum body 1 and/or the surface of the stirring structure
2, so as to achieve a gain effect of optimizing a leather manufacturing process. In
this way, according to the present invention, a leather manufacturing area is enlarged
and effective leather manufacturing time is prolonged without reducing the quality
of the leather, thereby realizing a more efficient leather manufacturing process,
and saving time and costs. Moreover, in a rotary leather manufacturing process of
the drum body, along with rotation of the rotary drum, the surface of the inner wall
of the drum body 1 and/or the surface of the stirring structure 2 provided with the
alternate hydrophilic and hydrophobic surface structure 3 may draw the leather to
enter and leave the bath liquid together, so as to enhance a stirring action of the
surface of the inner wall of the drum body 1 and/or the stirring structure 2 on the
bath liquid, such that flow of the bath liquid on a surface of the leather is accelerated,
permeation and mass transfer of chemicals towards the interior of the leather are
promoted, and acting time is shortened.
[0023] Specifically, with reference to FIG. 1, a schematic diagram of an overall structure
of a leather-manufacturing rotary drum having an alternate hydrophilic and hydrophobic
surface structure in an embodiment of the present invention is shown. The leather-manufacturing
rotary drum comprises:
a drum body 1 capable of rotating in its own circumferential direction;
a stirring structure 2 arranged in the drum body 1; and
an alternate hydrophilic and hydrophobic surface structure 3 in which hydrophilic-material
surfaces 31 and hydrophobic-material surfaces 32 are alternately distributed, the
alternate hydrophilic and hydrophobic surface structure 3 being distributed on a surface
of an inner wall of the drum body 1 and/or a surface of the stirring structure 2.
In a rotating process of the drum body 1, the alternate hydrophilic and hydrophobic
surface structure 3 repeatedly enters and leaves a bath liquid in the drum body 1.
[0024] In the present invention, the structure of the drum body 1 capable of rotating in
its own circumferential direction and the stirring structure 2 arranged in the drum
body 1 are not specifically limited in the present invention, as long as they can
be used in leather manufacturing industry and can realize at least one processing
procedure such as soaking, liming, dehairing, bating, pickling, tanning, dyeing and
fatliquoring.
[0025] In an embodiment of the present invention, the stirring structure 2 may comprise
baffles 21 and/or protruding piles 22, and in the rotating process of the drum body
1, the baffles 21 and/or the protruding piles 22 repeatedly enter and leave the bath
liquid in the drum body 1. That is, the stirring structure 2 may only comprise the
baffles 21, or only comprise the protruding piles 22, or comprise both the baffles
21 and the protruding piles 22. An alternate hydrophilic and hydrophobic arrangement
of the baffles 21 and the protruding piles 22 can better draw the leather, so as to
enhance a stirring action on the bath liquid, and enhance application of impacting,
colliding, rubbing, kneading and other actions to hides and skins, thereby enhancing
flow of the bath liquid on the surface of the leather, and promoting permeation and
mass transfer of chemicals towards the interior of the leather. Optionally, as shown
in FIGS. 1 and 2, when the stirring structure 2 comprises both the baffles 21 and
the protruding piles 22, the baffles 21 and the protruding piles 22 are alternately
distributed along a circumferential wall surface of the drum body 1. In this way,
since the baffles 21 and the protruding piles 22 are alternately distributed along
the circumferential wall surface of the drum body 1, and an interacting force exists
between the baffles 21 and the protruding piles 22 and the hides and skins, in the
rotating process of the drum body 1, comprehensive actions such as rubbing, kneading,
rolling, bending, impacting, colliding, pressing and pulling may be performed on the
hides and skins.
[0026] In the present invention, the alternate hydrophilic and hydrophobic surface structure
3 may be understood as a surface of which hydrophilic materials and hydrophobic materials
are alternately distributed, a contact angle of a droplet at a three-phase intersection
of the hydrophilic-material surface 31 is less than 90 degrees, a contact angle of
a droplet at a three-phase intersection of the hydrophobic-material surface 32 is
greater than 90 degrees, and alternate distribution of the hydrophilic and hydrophobic
materials may achieve an effect that droplets are better adhered to the hydrophilic-material
surfaces 31.
[0027] According to the present invention, after the alternate hydrophilic and hydrophobic
surface structure 3 is arranged on the surface of the inner wall of the drum body
1 and/or the surface of the stirring structure 2, in the rotating process of the drum
body 1, the alternate hydrophilic and hydrophobic surface structure 3 may repeatedly
enter and leave the bath liquid in the drum body 1 along with the surface of the inner
wall of the drum body 1 and/or the stirring structure 2. The hydrophilic-material
surfaces 31 may increase an adhesive force of the surface of the inner wall of the
drum body 1 and/or the stirring structure 2 to droplets of the bath liquid on the
basis of hydrophilic characteristics of the hydrophilic-material surfaces, and the
hydrophobic-material surfaces 32 may increase a driving force of the surface of the
inner wall of the drum body 1 and/or the stirring structure 2 for gathering droplets
of the bath liquid on the basis of hydrophobic characteristics of the hydrophobic-material
surfaces. In this way, structural characteristics of the surface of the inner wall
of the drum body 1 and/or the stirring structure 2 are optimized, thereby enhancing
a mechanical action of the rotary drum on the leather in a leather manufacturing process,
accelerating permeation and mass transfer processes of chemicals on the hides and
skins, and improving the leather manufacturing efficiency. It should be noted that
the distribution of the alternate hydrophilic and hydrophobic surface structure 3
on the surface of the inner wall of the drum body 1 and/or the surface of the stirring
structure 2 may be divided into the following three situations: in a first situation,
as shown in FIGS. 1 and 2, the alternate hydrophilic and hydrophobic surface structure
3 is only distributed on the surface of the stirring structure 2; in a second situation,
as shown in FIG. 3, the alternate hydrophilic and hydrophobic surface structure 3
is only distributed on the surface of the inner wall of the drum body 1; and in a
third situation, as shown in FIG. 4, the alternate hydrophilic and hydrophobic surface
structure 3 is distributed on both the surface of the inner wall of the drum body
1 and the surface of the stirring structure 2. By distribution herein may be understood
as that the alternate hydrophilic and hydrophobic surface structure 3 is partially
or completely wrapped around the surface of the inner wall of the drum body 1 and/or
the surface of the stirring structure 2.
[0028] Since a principle of optimizing the surface of the stirring structure 2 by the alternate
hydrophilic and hydrophobic surface structure 3 is similar to a principle of optimizing
the surface of the inner wall of the drum body 1 by the alternate hydrophilic and
hydrophobic surface structure 3, for the sake of brevity, the principle of optimizing
the surface of the stirring structure 2 by the alternate hydrophilic and hydrophobic
surface structure 3 is described below in the present invention. With reference to
FIGS. 5 and 6, a gain principle of a stirring structure 2 having an alternate hydrophilic
and hydrophobic surface structure 3 leaving a bath liquid is shown (as shown in FIG.
5(a), a gain principle of a baffle 21 having an alternate hydrophilic and hydrophobic
surface structure 3 leaving a bath liquid is shown; and as shown in FIG. 5(b), a gain
principle of a protruding pile 22 having an alternate hydrophilic and hydrophobic
surface structure 3 leaving a bath liquid is shown), and a gain principle of a stirring
structure 2 having an alternate hydrophilic and hydrophobic surface structure 3 entering
a bath liquid is shown (as shown in FIG. 6(a), a gain principle of a baffle 21 having
an alternate hydrophilic and hydrophobic surface structure 3 entering a bath liquid
is shown; and as shown in FIG. 6(b), a gain principle of a protruding pile 22 having
an alternate hydrophilic and hydrophobic surface structure 3 entering a bath liquid
is shown).
[0029] At first, when the stirring structure 2 impacts the bath liquid, an inertial force
drives the bath liquid to rapidly spread on a surface of the stirring structure, and
part of kinetic energy of the bath liquid is converted into surface energy and dissipation
energy. Since the alternate hydrophilic and hydrophobic surface structure 3 is arranged
on the surface of the stirring structure 2, the bath liquid has a large spreading
area and a long spreading time consumption on the hydrophilic-material surfaces 31,
and has a small spreading area and a short time consumption on the hydrophobic-material
surfaces 32. According to a physical phenomenon that the bath liquid is adhered to
the hydrophilic-material surfaces 31 to form a liquid film, adhesive characteristics
of the bath liquid on the hydrophilic-material surfaces 31 can achieve two gain effects
on the leather-manufacturing rotary drum without adversely affecting the quality of
the leather: on the one hand, a contact area between the leather and the bath liquid
in a rising process may be increased. Compared with original stainless steel metal
surfaces of mechanical components, in a rising period of the stirring structure 2
to which the bath liquid is adhered, the leather will slide on a surface to which
the bath liquid is adhered under the action of gravity, and an additional mass transfer
exchange action occurs between the leather and the bath liquid adhered to the alternate
hydrophilic and hydrophobic surface structure 3, such that under the condition that
absolute leather manufacturing time is not changed, relative leather manufacturing
time is prolonged. Actions of the alternate hydrophilic and hydrophobic surface structure
3 on the leather are as shown in FIGS. 5(a) and 5(b). In FIGS. 5(a) and 5(b), small
bumps on the baffle 21 and the protruding pile 22 represent droplets of the bath liquid
adhered to the hydrophilic-material surface 31. Moreover, the alternate hydrophilic
and hydrophobic surface structure 3 to which the bath liquid is adhered enhances an
interaction between the stirring structure 2 and the leather such that the leather
may reach a higher drawing position in a rising process, the wrinkled leather may
be fully extended, throwing kinetic energy of the leather is increased without increasing
total energy loss, and a mass transfer action is enhanced. On the other hand, a flow
field of the bath liquid at the bottom of the rotary drum may be caused to be more
disordered, thereby enhancing a mass transfer action between the bath liquid and the
leather. When the stirring structure 2 in the rotary drum draws the leather into the
bath liquid, a large number of droplets are generated, and these droplets are adhered
to the alternate hydrophilic and hydrophobic surface structure 3 to form a liquid
film, such that a drawing force of the stirring structure 2 on the leather is enhanced.
However, a surface acting force between a conventional stirring structure 2 with a
metal surface and leather is weak, such that after the stirring structure 2 draws
the leather into a bath liquid, the leather will rapidly fall off. For the rotary
drum having the alternate hydrophilic and hydrophobic surface structure 3, the leather
is more likely to be drawn into the bath liquid at the bottom of the rotary drum to
generate a strong stirring action, such that the flow field in the bath liquid is
more disordered at the bottom, and effects of shearing a mass transfer boundary layer
of the leather and thinning the mass transfer boundary layer are achieved, thereby
promoting an effect of convective mass transfer action. This process is as shown in
FIGS. 6(a) and 6(b). In FIGS. 6(a) and 6(b), small bumps on the baffle 21 and the
protruding pile 22 represent droplets of the bath liquid adhered to the hydrophilic-material
surface 31.
[0030] Specific materials of the hydrophilic materials and the hydrophobic materials are
not limited in the present invention, as long as the hydrophilic materials can enhance
an adhesive force of the surface of the inner wall of the drum body 1 and/or the stirring
structure 2 on droplets of a bath liquid on the basis of hydrophilic characteristics
of the hydrophilic materials, and the hydrophobic materials can increase a driving
force of the bath liquid of the surface of the inner wall of the drum body 1 and/or
the stirring structure 2 for gathering the droplets on the basis of hydrophobic characteristics
of the hydrophobic materials. Illustratively, the hydrophilic materials may be hydrophilic
metal/non-metal nanoparticles, hydrophilic resin, polyacrylic acid, silica, polyvinylpyrrolidone,
and the hydrophobic materials may be alkane, oil, fluorinated polyethylene, fluorocarbon
wax, or other synthetic fluoropolymer.
[0031] In an embodiment of the present invention, a representation form of the alternate
hydrophilic and hydrophobic surface structure 3 is provided. The alternate hydrophilic
and hydrophobic surface structure 3 is a structure in which hydrophilic coatings and
hydrophobic coatings are alternately distributed. The hydrophilic coatings are the
hydrophilic-material surfaces 31 and are formed by preparing hydrophilic materials
on the surface of the inner wall of the drum body 1 and/or the surface of the stirring
structure 2; and the hydrophobic coatings are the hydrophobic-material surfaces 32
and are formed by preparing hydrophobic materials on the surface of the inner wall
of the drum body 1 and/or the surface of the stirring structure 2. In this embodiment,
the hydrophilic-material surfaces 31 and the hydrophobic-material surfaces 32 are
both coatings, which can be understood as films applied to the surface of the inner
wall of the drum body 1 and/or the surface of the stirring structure 2. The coatings
and the surface of the inner wall of the drum body 1 and/or the surface of the stirring
structure 2 may effectively form a compact composite structure, which can change surface
characteristics of the material of the inner wall of the drum body 1 and/or the material
of the stirring structure 2 without affecting original structures of the surface of
the inner wall of the drum body 1 and/or the stirring structure 2, thereby optimizing
movement of the leather on the surface of the inner wall of the drum body 1 and/or
the surface of the stirring structure 2 in the leather-manufacturing rotary drum,
enhancing flow of the bath liquid, and realizing a physical mechanism, principle and
method for enhancing a mechanical action in a leather manufacturing process by means
of the hydrophilic coatings and the hydrophobic coatings that are alternately arranged.
Illustratively, a schematic structural diagram of hydrophilic coatings and hydrophobic
coatings that are alternately arranged on a surface of a protruding pile 22 is as
shown in FIG. 7(a), and a schematic structural diagram of hydrophilic coatings and
hydrophobic coatings that are alternately arranged on a surface of a baffle 21 is
as shown in FIG. 7(b).
[0032] The hydrophilic materials may be prepared on the surface of the inner wall of the
drum body 1 and/or the surface of the stirring structure 2 through a spraying technology,
a physical vapor deposition technology, a cathode electrochemical deposition technology,
an electrophoretic directional deposition technology or a micro-contact printing technology.
to form the hydrophilic coatings. Similarly, the hydrophobic materials may be prepared
on the surface of the inner wall of the drum body 1 and/or the surface of the stirring
structure 2 through a spraying technology, a physical vapor deposition technology,
a cathode electrochemical deposition technology, an electrophoretic directional deposition
technology or a micro-contact printing technology. so as to form the hydrophobic coatings.
It should be noted that in the case that different materials are used to prepare the
coatings, coating preparation technologies used may be different. That is, in the
case that different hydrophilic materials are used to prepare the hydrophilic coatings,
the coating preparation technologies used may be different, and correspondingly, in
the case that different hydrophobic materials are used to prepare the hydrophobic
coatings, the coating preparation technologies used may be different. By "preparation"
herein includes, but is not limited to, spraying, deposition and printing. Illustratively,
in the case that hydrophilic pure metal or hydrophilic composite metal nanoparticles
are used as the hydrophilic materials, a spraying technology may be used to spray
hydrophilic coatings on the surface of the inner wall of the drum body 1 and/or the
surface of the stirring structure 2; in the case that hydrophilic resin is used as
the hydrophilic materials, a micro-contact printing technology may be used to print
hydrophilic coatings on the surface of the inner wall of the drum body 1 and/or the
surface of the stirring structure 2; and in the case that polyvinylpyrrolidone is
used as the hydrophilic materials, a sol-gel method may be used to print hydrophilic
coatings on the surface of the inner wall of the drum body 1 and/or the surface of
the stirring structure 2. It should be further emphasized that since the present invention
is mainly used in a leather manufacturing process, in consideration of the use of
leather in daily life, when the hydrophilic coatings and the hydrophobic coatings
are prepared on the surface of the inner wall of the drum body 1 and/or the surface
of the stirring structure 2, the hydrophilic materials and the hydrophobic materials
should be selected to be non-toxic or conform to the relevant national standards.
[0033] In an embodiment of the present invention, a representation form of the alternate
hydrophilic and hydrophobic surface structure 3 is provided. The alternate hydrophilic
and hydrophobic surface structure 3 is a structure in which hydrophilic coatings and
polished original surfaces of the inner wall of the drum body 1 and/or the stirring
structure 2 are alternately distributed. The hydrophilic coatings are the hydrophilic-material
surfaces 31 and are formed by preparing hydrophilic materials on the surface of the
inner wall of the drum body 1 and/or the surface of the stirring structure 2; and
the polished original surfaces of the inner wall of the drum body 1 and/or the stirring
structure 2 are the hydrophobic-material surfaces 32. Since the rotary drum is generally
made of a metal material such as stainless steel, and a smooth surface of a metal
inner wall has hydrophobic characteristics, the use of the polished original surfaces
as the hydrophobic-material surfaces 32 can effectively save the cost din this embodiment.
In actual operation, the surface of the inner wall of the drum body 1 and/or the surface
of the stirring structure 2 may be polished first, and then hydrophilic coatings are
prepared at a plurality of positions of the polished surface of the inner wall of
the drum body 1 and/or the polished surface of the stirring structure 2, such that
the hydrophilic coatings and the polished original surfaces of the inner wall of the
drum body 1 and/or the stirring structure 2 are alternately arranged, thereby obtaining
the alternate hydrophilic and hydrophobic surface structure 3 in the present invention,
optimizing movement of the leather on the surface of the inner wall of the drum body
1 and/or the surface of the stirring structure 2 in the leather-manufacturing rotary
drum, enhancing flow of the bath liquid, and realizing a physical mechanism, principle
and method for enhancing a mechanical action in a leather manufacturing process by
means of the hydrophilic coatings and the polished original surfaces of the inner
wall of the drum body 1 and/or the stirring structure 2 serving as the hydrophobic-material
surfaces 32, which are alternately arranged. For a method for preparing a hydrophilic
coating, references can be made to other embodiments, which will not be repeated in
this embodiment.
[0034] In an embodiment of the present invention, a representation form of the alternate
hydrophilic and hydrophobic surface structure 3 is provided. The alternate hydrophilic
and hydrophobic surface structure 3 is a structure formed by assembling a plurality
of modularized hydrophilic and hydrophobic sheets. Outer surfaces of the hydrophilic
and hydrophobic sheets are alternately distributed surfaces of the hydrophilic-material
surfaces 31 and the hydrophobic-material surfaces 32, and the hydrophilic and hydrophobic
sheets are mounted in close contact with the surface of the inner wall of the drum
body 1 and/or the surface of the stirring structure 2. In this embodiment, the hydrophilic
and hydrophobic sheets are modularized, and each hydrophilic and hydrophobic sheet
is provided with at least one group of hydrophilic-material surface 31 and hydrophobic-material
surfaces 32. In the case that there are multiple groups, the hydrophilic-material
surfaces 31 and hydrophobic-material surfaces 32 are alternately distributed on the
outer surface of each hydrophilic and hydrophobic sheet, which is as shown in FIGS.
8(a) to 8(g). In this embodiment, through connection means such as bonding, rivets,
threads, micro-welding, the hydrophilic and hydrophobic sheets may be directly attached
to or mounted on the surface of the inner wall of the drum body 1 and/or the surface
of the stirring structure 2. In this way, the alternate hydrophilic and hydrophobic
surface structure 3 assembled in a modularized manner may be formed on the surface
of the inner wall of the drum body 1 and/or the surface of the stirring structure
2, so as to improve mechanical properties of the surface of the inner wall of the
drum body 1 and/or the surface of the stirring structure 2, thereby optimizing movement
of the leather on the surface of the inner wall of the drum body 1 and/or the surface
of the stirring structure 2 in the leather-manufacturing rotary drum and enhancing
flow of the bath liquid. Advantages of this embodiment lie in that a sheet processing
process can be directly carried out on a plane, such that technical problems caused
by processing a curved surface are avoided. Moreover, the modularized hydrophilic
and hydrophobic sheets are replaceable, such that the cost is lower, and a long-time
gain effect of the leather-manufacturing rotary drum in a leather manufacturing process
is guaranteed. Illustratively, a schematic structural diagram of modularized hydrophilic
and hydrophobic sheets arranged on a surface of a protruding pile 22 is as shown in
FIG. 9(a), and a schematic structural diagram of modularized hydrophilic and hydrophobic
sheets arranged on a surface of a baffle 21 is as shown in FIG. 9(b).
[0035] Optionally, a method for preparing a hydrophilic and hydrophobic sheet is as follows:
in a high-temperature and high-pressure environment, a hydrophobic sheet in a special
shape obtained by linear cutting is embedded on a surface of hydrophilic resin, then
a surface of the hydrophobic sheet is corroded by a CuCI2 solution, and the surface
of the sheet is modified by a constant-temperature water bath of an absolute ethyl
alcohol solution with stearic acid, so as to finally obtain a composite surface with
a hydrophilic region and a hydrophobic region coexisting, that is, the hydrophilic
and hydrophobic sheet in this embodiment.
[0036] In an embodiment of the present invention, a representation form of the alternate
hydrophilic and hydrophobic surface structure 3 is provided. The alternate hydrophilic
and hydrophobic surface structure 3 is a structure in which modularized hydrophilic
sheets and hydrophobic coatings are alternately distributed. Outer surfaces of the
hydrophilic sheets are the hydrophilic-material surfaces 31, and the hydrophilic sheets
are mounted in close contact with the surface of the inner wall of the drum body 1
and/or the surface of the stirring structure 2; and the hydrophobic coatings are the
hydrophobic-material surfaces 32 and are formed by preparing hydrophobic materials
on the surface of the inner wall of the drum body 1 and/or the surface of the stirring
structure 2. In this embodiment, the hydrophilic-material surfaces 31 are mounted
on the surface of the inner wall of the drum body 1 and/or the surface of the stirring
structure 2 in the form of hydrophilic sheets, and the hydrophobic-material surfaces
32 are presented as hydrophobic coatings. In this way, surface characteristics of
the material of the inner wall of the drum body 1 and/or the material of the stirring
structure 2 are changed, thereby optimizing movement of the leather on the surface
of the inner wall of the drum body 1 and/or the surface of the stirring structure
2 in the leather-manufacturing rotary drum, enhancing flow of the bath liquid, and
realizing a physical mechanism, principle and method for enhancing a mechanical action
in a leather manufacturing process by means of the hydrophilic sheets and the hydrophobic
coatings that are alternately arranged.
[0037] In an embodiment of the present invention, a representation form of an alternate
hydrophilic and hydrophobic surface structure 3 is provided. The alternate hydrophilic
and hydrophobic surface structure 3 is a structure in which modularized hydrophilic
sheets and polished original surfaces of the inner wall of the drum body 1 and/or
the stirring structure 2 are alternately distributed. Outer surfaces of the hydrophilic
sheets are the hydrophilic-material surfaces 31, and the hydrophilic sheets are mounted
in close contact with the surface of the inner wall of the drum body 1 and/or the
surface of the stirring structure 2; and the polished original surfaces of the inner
wall of the drum body 1 and/or the stirring structure 2 are the hydrophobic-material
surfaces 32. In this embodiment, the hydrophilic-material surfaces 31 are mounted
on the surface of the inner wall of the drum body 1 and/or the surface of the stirring
structure 2 in the form of hydrophilic sheets, and the hydrophobic-material surfaces
32 are presented as the polished original surfaces of the inner wall of the drum body
1 and/or the surface of the stirring structure 2. In this way, surface characteristics
of the material of the inner wall of the drum body 1 and/or the material of the stirring
structure 2 are changed, thereby optimizing movement of the leather on the surface
of the inner wall of the drum body 1 and/or the surface of the stirring structure
2 in the leather-manufacturing rotary drum, enhancing flow of the bath liquid, and
realizing a physical mechanism, principle and method for enhancing a mechanical action
in a leather manufacturing process by means of the hydrophilic sheets and the polished
original surfaces that are alternately arranged.
[0038] In the above two embodiments, the hydrophilic sheets may be understood as sheet structures
only with hydrophilic-material surfaces 31, and the hydrophilic-material surfaces
31 on the sheet structures may be prepared in the form of coatings. The hydrophilic
sheets may be mounted on the surface of the inner wall of the drum body 1 and/or the
surface of the stirring structure 2 through connection means such as bonding, rivets,
threads, micro-welding, and the hydrophilic sheets and the hydrophobic-material surfaces
32 are alternately arranged. For a method for preparing the hydrophobic coatings or
a preparation method in which the polished original surfaces of the inner wall of
the drum body 1 and/or the stirring structure 2 can serve as the hydrophobic-material
surfaces 32 and the explanation of the principles thereof, references can be made
to other embodiments, which will not be repeated in this embodiment.
[0039] In an embodiment of the present invention, a representation form of the alternate
hydrophilic and hydrophobic surface structure 3 is provided. The alternate hydrophilic
and hydrophobic surface structure 3 is a structure in which hydrophilic coatings and
modularized hydrophobic sheets are alternately distributed. The hydrophilic coatings
are the hydrophilic-material surfaces 31 and are formed by preparing hydrophilic materials
on the surface of the inner wall of the drum body 1 and/or the surface of the stirring
structure 2; and outer surfaces of the hydrophobic sheets are the hydrophobic-material
surfaces 32, and the hydrophobic sheets are mounted in close contact with the surface
of the inner wall of the drum body 1 and/or the surface of the stirring structure
2. In this embodiment, the hydrophobic-material surfaces 32 are mounted on the surface
of the inner wall of the drum body 1 and/or the surface of the stirring structure
2 in the form of hydrophobic sheets, and the hydrophilic-material surfaces 31 are
presented in the form of hydrophilic coatings. In this way, surface characteristics
of the material of the inner wall of the drum body 1 and/or the material of the stirring
structure 2 are changed, thereby optimizing movement of the leather on the surface
of the inner wall of the drum body 1 and/or the surface of the stirring structure
2 in the leather-manufacturing rotary drum, enhancing flow of the bath liquid, and
realizing a physical mechanism, principle and method for enhancing a mechanical action
in a leather manufacturing process by means of the hydrophobic sheets and the hydrophilic
coatings that are alternately arranged.
[0040] The hydrophobic sheets in this embodiment may be understood as sheet structures only
with hydrophobic-material surfaces 32, and the hydrophobic-material surfaces 32 on
the sheet structures may be prepared in the form of coatings. The hydrophobic sheets
may be mounted on the surface of the inner wall of the drum body 1 and/or the surface
of the stirring structure 2 through connection means such as bonding, rivets, threads,
micro-welding, and the hydrophobic sheets and the hydrophilic coatings are alternately
arranged. For a method for preparing a hydrophilic coating, references can be made
to other embodiments, which will not be repeated in this embodiment.
[0041] In an embodiment of the present invention, a representation form of the alternate
hydrophilic and hydrophobic surface structure 3 is provided. The alternate hydrophilic
and hydrophobic surface structure 3 is a structure in which modularized hydrophilic
sheets and modularized hydrophobic sheets are alternately distributed. Outer surfaces
of the hydrophilic sheets are the hydrophilic-material surfaces 31, and the hydrophilic
sheets are mounted in close contact with the surface of the inner wall of the drum
body 1 and/or the surface of the stirring structure 2; and outer surfaces of the hydrophobic
sheets are the hydrophobic-material surfaces 32, and the hydrophobic sheets are mounted
in close contact with the surface of the inner wall of the drum body 1 and/or the
surface of the stirring structure 2. In this embodiment, the hydrophilic-material
surfaces 31 are mounted on the surface of the inner wall of the drum body 1 and/or
the surface of the stirring structure 2 in the form of hydrophilic sheets, and the
hydrophobic-material surfaces 32 are mounted on the surface of the inner wall of the
drum body 1 and/or the surface of the stirring structure 2 in the form of hydrophobic
sheets. In this way, surface characteristics of the material of the inner wall of
the drum body 1 and/or the material of the stirring structure 2 are changed, thereby
optimizing movement of the leather on the surface of the inner wall of the drum body
1 and/or the surface of the stirring structure 2 in the leather-manufacturing rotary
drum, enhancing flow of the bath liquid, and realizing a physical mechanism, principle
and method for enhancing a mechanical action in a leather manufacturing process by
means of the hydrophilic sheets and the hydrophobic sheets that are alternately distributed.
[0042] The hydrophilic sheets in the embodiment may be understood as sheet structures only
with hydrophilic-material surfaces 31, and the hydrophilic-material surfaces 31 on
the sheet structures may be prepared in the form of coatings. The hydrophobic sheets
in this embodiment may be understood as sheet structures only with hydrophobic-material
surfaces 32, and the hydrophobic-material surfaces 32 on the sheet structures may
be prepared in the form of coatings. The hydrophilic sheets and the hydrophobic sheets
may be both mounted on the surface of the inner wall of the drum body 1 and/or the
surface of the stirring structure 2 through connection means such as bonding, rivets,
threads, micro-welding, and the hydrophilic sheets and the hydrophobic sheets are
assembled with each other, thereby forming the alternate hydrophilic and hydrophobic
surface structure 3 on the surface of the inner wall of the drum body 1 and/or the
surface of the stirring structure 2.
[0043] It should be noted that shapes of the hydrophilic-material surfaces 31 and the hydrophobic-material
surfaces 32 are not limited in the present invention, which may be in a straight-line
shape, a triangular shape, a zigzag shape or a wavy shape, or may be distributed in
the form of spots, and the spot shape may include a circular shape, a triangular shape,
a rectangular shape, a polygonal shape, or any other shape. Illustratively, the presentation
of the hydrophilic-material surfaces 31 and the hydrophobic-material surfaces 32 that
are alternately distributed on outer surfaces of the hydrophilic and hydrophobic sheets
in different patterns and shapes may be as shown in FIGS. 8(a) to 8(g), and the presentation
of the hydrophilic coatings and the hydrophobic coatings that are alternately distributed
on the surface of the baffle 21 in different patterns and shapes may be as shown in
FIGS. 10(a) to 10(g).
[0044] In an embodiment of the present invention, with reference to FIGS. 1, 2 and 5 to
7, in the alternate hydrophilic and hydrophobic surface structure 3, the hydrophilic-material
surfaces 31 and the hydrophobic-material surfaces 32 are both in straight-line shapes.
The reason why the hydrophilic-material surfaces 31 and the hydrophobic-material surfaces
32 are preferably in straight-line shapes is that the processing difficulty of a straight-line
shape is low, and the hydrophilic-material surfaces 31 and the hydrophobic-material
surfaces 32 can obtain a better area ratio, which is beneficial to implementation
of the solution of the present invention.
[0045] Next, a specific structure of a leather-manufacturing rotary drum having an alternate
hydrophilic and hydrophobic surface structure 3 in an embodiment of the present invention
will be described with an example.
[0046] As shown in FIG. 1, for the leather-manufacturing rotary drum, two drum base plates
10 are mounted on two sides of a drum body 1 by means of drum hoops 4, four connecting
retaining rings 5 distributed at 90 degrees are welded to the drum hoops 4, and each
connecting retaining ring 5 is provided with two screw holes connected to the drum
body 1, with the aim of enable sealing rings between the drum base plates 10 and the
drum body 1 to achieve a sealing function. The other side of each drum base plate
10 is provided with a reinforced base plate 9 by means of screws, reinforced ribs
are distributed on the reinforced base plate 9 at intervals of 60 degrees, and each
reinforced rib is provided with three screw holes, so as to provide a radial acting
force on the drum base plate 10, such that the drum base plate 10 is more tightly
sealed against the drum body 1. A drum main shaft 8 is connected to the drum base
plates 10 in a welded manner, and is nested with the reinforced base plates 9 by means
of keys. The drum main shaft is connected to a bearing 7 on a supporting frame 6,
and the drum main shaft and the bearing are mounted on a positioning support together.
A drum door 11 is further arranged on a side surface of the drum body 1, and sliding
rails are arranged on two sides of the drum door 11 so as to facilitate opening or
closing the door when leather is added. The drum body 1 mainly comprises protruding
piles 22, baffles 21 and an alternate hydrophilic and hydrophobic surface structure
3. Hydrophilic-material surfaces 31 and hydrophobic-material surfaces 32 of the alternate
hydrophilic and hydrophobic surface structure 3 are distributed on surfaces of the
protruding piles 22 and the baffles 21 in a stripe shape, as shown in FIGS. 1, 2,
and 5 to 7.
[0047] When leather (hides and skins) is loaded into the rotary drum through the drum door
11, and the drum main shaft 8 is rotated under the action of an electric motor, the
drum body 1 starts to rotate, and the stirring structure 2 (for example, the protruding
piles 22 and the baffles 21) in the drum body 1 repeatedly enter and leave a bath
liquid. In this process, the alternate hydrophilic and hydrophobic surface structure
3 on the surface of the stirring structure 2 repeatedly enters or leaves the bath
liquid. Along with a periodic process of entering or leaving the bath liquid, droplets
are continuously adhered to the hydrophilic-material surfaces 31, such that a drawing
force between the hydrophilic-material surfaces and the wet leather is increased,
thereby causing the following specific physical phenomena to occur between the leather
and the surfaces of the baffles 21 and the protruding piles 22. A first physical phenomenon
is that when the protruding piles 22 or the baffles 21 draw the leather into the bath
liquid, under the action of the strong drawing force of the alternate hydrophilic
and hydrophobic surface structure 3, the leather is not likely to fall off, and the
bath liquid at a bottom is more easy to stir, such that a flow field becomes disordered,
and a mass transfer action is enhanced. A second physical phenomenon is that when
the leather is drawn away from the bath liquid by the protruding piles 22 or the baffles
21, due to a strong adhesive force of the hydrophilic-material surfaces 31 to droplets,
a large number of droplets will be adhered to the hydrophilic-material surfaces 31.
During sliding of the leather on the alternate hydrophilic and hydrophobic surface
structure 3 under the action of gravity, a mass transfer action will occur between
the leather and the bath liquid adhered to the alternate hydrophilic and hydrophobic
surface structure, such that relative leather manufacturing time is prolonged. A third
physical phenomenon is that under the action of a strong drawing force of the alternate
hydrophilic and hydrophobic surface structure 3, the lifting leather can move to a
higher drawing position, such that extension is more sufficient; moreover, throwing
kinetic energy is increased in a falling process. Therefore, the alternate hydrophilic
and hydrophobic surface structure 3 can achieve gain effects, and in an actual leather
manufacturing process, not only can a mass transfer effect of leather be improved
and leather manufacturing time be shortened, but an adverse effect of a long-time
mechanical action on physical and mechanical properties of the leather can also be
avoided.
[0048] Preferably, there are four pairs of the protruding piles 22 and two pairs of the
baffles 21 in the rotary drum, such that a distribution angle of the baffles 21 and
the protruding piles 22 in a circumferential direction is 30 degrees. The arrangement
mode of two adjacent protruding piles 22 in a direction of the drum body 1 is a staggered
arrangement, with the aim of destroying a fixed form of the leather in the rotary
drum, thereby enhancing a mechanical action and improving a leather manufacturing
effect. Strip-type hydrophilic sheets are formed on the surfaces of the baffles 21
and the protruding piles 22, and original surfaces of the baffles and the protruding
piles serve as hydrophobic-material surfaces 32, thereby achieving the function of
an alternate hydrophilic and hydrophobic surface. Chemically treated gold coatings
may be used as outer surfaces of the hydrophilic sheets, and the hydrophilic-material
surfaces 31 are preferably in a straight-line shape, so as to enhance a leather manufacturing
process at a low cost.
[0049] It should be noted that the various embodiments in the description are described
in a progressive manner, each embodiment focuses on the differences from other embodiments,
and the same and similar parts of the various embodiments can be referred to each
other.
[0050] It should also be noted that in the description, an orientation or positional relationship
indicated by terms "center", "upper", "lower", "left", "right", "vertical", "horizontal",
"inner", "outer", etc. is an orientation or positional relationship shown on the basis
of the accompanying drawings, which is only for convenience of describing the present
invention and simplifying the description, rather than indicating or implying that
the referred device or element must have a particular orientation, and be constructed
and operated in a particular orientation, and therefore should not be construed as
limiting the present invention. In addition, relational terms such as "first" and
"second" are merely used to distinguish one entity or operation from another entity
or operation, do not necessarily require or imply that any actual relation or sequence
exists between these entities or operations, and should not be constructed as indicating
or implying relative importance. Moreover, terms "include", "comprise", or any other
variants thereof are intended to cover a non-exclusive inclusion, such that a process,
method, article, or terminal apparatus that includes a list of elements not only includes
those elements but also includes other elements that are not listed, or further includes
elements inherent to such a process, method, article, or terminal apparatus. In the
absence of more restrictions, an element defined by "including a..." does not exclude
a further identical element in a process, method, article, or terminal apparatus that
includes the element.
[0051] The technical solutions provided in the present invention are described in detail
above, and in the description, the principles and implementations of the present invention
are described by means of specific examples. The description of the above embodiments
is only used to help understand the present invention, and the content of the description
should not be construed as limiting the present invention, the scope of protection
of the present invention is defined in appended claims.
1. A leather-manufacturing rotary drum having an alternate hydrophilic and hydrophobic
surface structure (3),
characterized by comprising:
a drum body (1) capable of rotating in its own circumferential direction;
a stirring structure (2) arranged in the drum body (1); and
an alternate hydrophilic and hydrophobic surface structure (3) in which hydrophilic-material
surfaces (31) and hydrophobic-material surfaces (32) are alternately distributed,
the alternate hydrophilic and hydrophobic surface structure (3) being distributed
on a surface of an inner wall of the drum body (1) and/or a surface of the stirring
structure (2),
wherein, in a rotating process of the drum body (1), the alternate hydrophilic and
hydrophobic surface structure (3) repeatedly enters and leaves a bath liquid in the
drum body (1).
2. The leather-manufacturing rotary drum according to claim 1,
characterized in that the alternate hydrophilic and hydrophobic surface structure (3) is a structure in
which hydrophilic coatings and hydrophobic coatings are alternately distributed, wherein:
the hydrophilic coatings are the hydrophilic-material surfaces (31) and are formed
by preparing hydrophilic materials on the surface of the inner wall of the drum body
(1) and/or the surface of the stirring structure (2); and
the hydrophobic coatings are the hydrophobic-material surfaces (32) and are formed
by preparing hydrophobic materials on the surface of the inner wall of the drum body
(1) and/or the surface of the stirring structure (2).
3. The leather-manufacturing rotary drum according to claim 1,
characterized in that the alternate hydrophilic and hydrophobic surface structure (3) is a structure in
which hydrophilic coatings and polished original surfaces of the inner wall of the
drum body (1) and/or the stirring structure (2) are alternately distributed, wherein:
the hydrophilic coatings are the hydrophilic-material surfaces (31) and are formed
by preparing hydrophilic materials on the surface of the inner wall of the drum body
(1) and/or the surface of the stirring structure (2); and
the polished original surfaces of the inner wall of the drum body (1) and/or the stirring
structure (2) are the hydrophobic-material surfaces (32).
4. The leather-manufacturing rotary drum according to claim 1, characterized in that the alternate hydrophilic and hydrophobic surface structure (3) is a structure formed
by assembling a plurality of modularized hydrophilic and hydrophobic sheets, wherein:
outer surfaces of the hydrophilic and hydrophobic sheets are alternately distributed
surfaces of the hydrophilic-material surfaces (31) and the hydrophobic-material surfaces
(32), and the hydrophilic and hydrophobic sheets are mounted in close contact with
the surface of the inner wall of the drum body (1) and/or the surface of the stirring
structure (2).
5. The leather-manufacturing rotary drum according to claim 1,
characterized in that the alternate hydrophilic and hydrophobic surface structure (3) is a structure in
which modularized hydrophilic sheets and hydrophobic coatings are alternately distributed,
wherein:
outer surfaces of the hydrophilic sheets are the hydrophilic-material surfaces (31),
and the hydrophilic sheets are mounted in close contact with the surface of the inner
wall of the drum body (1) and/or the surface of the stirring structure (2); and
the hydrophobic coatings are the hydrophobic-material surfaces (32) and are formed
by preparing hydrophobic materials on the surface of the inner wall of the drum body
(1) and/or the surface of the stirring structure (2).
6. The leather-manufacturing rotary drum according to claim 1,
characterized in that the alternate hydrophilic and hydrophobic surface structure (3) is a structure in
which modularized hydrophilic sheets and polished original surfaces of the inner wall
of the drum body (1) and/or the stirring structure (2) are alternately distributed,
wherein:
outer surfaces of the hydrophilic sheets are the hydrophilic-material surfaces (31),
and the hydrophilic sheets are mounted in close contact with the surface of the inner
wall of the drum body (1) and/or the surface of the stirring structure (2); and
the polished original surfaces of the inner wall of the drum body (1) and/or the stirring
structure (2) are the hydrophobic-material surfaces (32).
7. The leather-manufacturing rotary drum according to claim 1,
characterized in that the alternate hydrophilic and hydrophobic surface structure (3) is a structure in
which hydrophilic coatings and modularized hydrophobic sheets are alternately distributed,
wherein:
the hydrophilic coatings are the hydrophilic-material surfaces (31) and are formed
by preparing hydrophilic materials on the surface of the inner wall of the drum body
(1) and/or the surface of the stirring structure (2); and
outer surfaces of the hydrophobic sheets are the hydrophobic-material surfaces (32),
and the hydrophobic sheets are mounted in close contact with the surface of the inner
wall of the drum body (1) and/or the surface of the stirring structure (2).
8. The leather-manufacturing rotary drum according to claim 1,
characterized in that the alternate hydrophilic and hydrophobic surface structure (3) is a structure in
which modularized hydrophilic sheets and modularized hydrophobic sheets are alternately
distributed, wherein:
outer surfaces of the hydrophilic sheets are the hydrophilic-material surfaces (31),
and the hydrophilic sheets are mounted in close contact with the surface of the inner
wall of the drum body (1) and/or the surface of the stirring structure (2); and
outer surfaces of the hydrophobic sheets are the hydrophobic-material surfaces (32),
and the hydrophobic sheets are mounted in close contact with the surface of the inner
wall of the drum body (1) and/or the surface of the stirring structure (2).
9. The leather-manufacturing rotary drum according to any one of claims 1-8, characterized in that the stirring structure (2) comprises baffles (21) and/or protruding piles (22), and
in the rotating process of the drum body (1), the baffles (21) and/or the protruding
piles (22) repeatedly enter and leave the bath liquid in the drum body (1).
10. The leather-manufacturing rotary drum according to claim 9, characterized in that when the stirring structure (2) comprises both the baffles (21) and the protruding
piles (22), the baffles (21) and the protruding piles (22) are alternately distributed
along a circumferential wall surface of the drum body (1).
1. Drehtrommel für die Lederherstellung, die eine abwechselnd hydrophile und hydrophobe
Oberflächenstruktur (3) aufweist,
dadurch gekennzeichnet, dass sie umfasst:
einen Trommelkörper (1), der in der Lage ist, in seiner eigenen Umfangsrichtung zu
drehen;
eine Rührstruktur (2), die im Trommelkörper (1) eingerichtet ist; und
eine abwechselnd hydrophile und hydrophobe Oberflächenstruktur (3), bei der Oberflächen
aus hydrophilem Material (31) und Oberflächen aus hydrophobem Material (32) abwechselnd
verteilt sind, wobei die abwechselnd hydrophile und hydrophobe Oberflächenstruktur
(3) auf einer Oberfläche einer Innenwand des Trommelkörpers (1) und/oder einer Oberfläche
der Rührstruktur (2) verteilt ist,
wobei bei einem Drehprozess des Trommelkörpers (1) die abwechselnd hydrophile und
hydrophobe Oberflächenstruktur (3) wiederholt in eine Badflüssigkeit im Trommelkörper
(1) eintritt und diese verlässt.
2. Drehtrommel für die Lederherstellung nach Anspruch 1,
dadurch gekennzeichnet, dass die abwechselnd hydrophile und hydrophobe Oberflächenstruktur (3) eine Struktur ist,
bei der hydrophile Beschichtungen und hydrophobe Beschichtungen abwechselnd verteilt
sind, wobei:
die hydrophilen Beschichtungen die Oberflächen aus hydrophilem Material (31) sind
und durch Anfertigen von hydrophilen Materialien auf der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) gebildet sind;
und
die hydrophoben Beschichtungen die Oberflächen aus hydrophobem Material (32) sind
und durch Anfertigen von hydrophoben Materialien auf der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) gebildet sind.
3. Drehtrommel für die Lederherstellung nach Anspruch 1,
dadurch gekennzeichnet, dass die abwechselnd hydrophile und hydrophobe Oberflächenstruktur (3) eine Struktur ist,
bei der hydrophile Beschichtungen und polierte ursprüngliche Oberflächen der Innenwand
des Trommelkörpers (1) und/oder der Rührstruktur (2) abwechselnd verteilt sind, wobei:
die hydrophilen Beschichtungen die Oberflächen aus hydrophilem Material (31) sind
und durch Anfertigen von hydrophilen Materialien auf der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) gebildet sind;
und
die polierten ursprünglichen Oberflächen der Innenwand des Trommelkörpers (1) und/oder
der Rührstruktur (2) die Oberflächen aus hydrophobem Material (32) sind.
4. Drehtrommel für die Lederherstellung nach Anspruch 1, dadurch gekennzeichnet, dass die abwechselnd hydrophile und hydrophobe Oberflächenstruktur (3) eine Struktur ist,
die durch Zusammensetzen einer Vielzahl von modularisierten hydrophilen und hydrophoben
Lagen gebildet ist, wobei:
Außenoberflächen der hydrophilen und hydrophoben Lagen abwechselnd verteilte Oberflächen
der Oberflächen aus hydrophilem Material (31) und der Oberflächen aus hydrophobem
Material (32) sind, und die hydrophilen und hydrophoben Lagen in engem Kontakt mit
der Oberfläche der Innenwand des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur
(2) angebracht sind.
5. Drehtrommel für die Lederherstellung nach Anspruch 1,
dadurch gekennzeichnet, dass die abwechselnd hydrophile und hydrophobe Oberflächenstruktur (3) eine Struktur ist,
bei der modularisierte hydrophile Lagen und hydrophobe Beschichtungen abwechselnd
verteilt sind, wobei:
Außenoberflächen der hydrophilen Lagen die Oberflächen aus hydrophilem Material (31)
sind, und die hydrophilen Lagen in engem Kontakt mit der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) angebracht sind;
und
die hydrophoben Beschichtungen die Oberflächen aus hydrophobem Material (32) sind
und durch Anfertigen von hydrophoben Materialien auf der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) gebildet sind.
6. Drehtrommel für die Lederherstellung nach Anspruch 1,
dadurch gekennzeichnet, dass die abwechselnd hydrophile und hydrophobe Oberflächenstruktur (3) eine Struktur ist,
bei der modularisierte hydrophile Lagen und polierte ursprüngliche Oberflächen der
Innenwand des Trommelkörpers (1) und/oder der Rührstruktur (2) abwechselnd verteilt
sind, wobei:
Außenoberflächen der hydrophilen Lagen die Oberflächen aus hydrophilem Material (31)
sind, und die hydrophilen Lagen in engem Kontakt mit der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) angebracht sind;
und
die polierten ursprünglichen Oberflächen der Innenwand des Trommelkörpers (1) und/oder
der Rührstruktur (2) die Oberflächen aus hydrophobem Material (32) sind.
7. Drehtrommel für die Lederherstellung nach Anspruch 1,
dadurch gekennzeichnet, dass die abwechselnd hydrophile und hydrophobe Oberflächenstruktur (3) eine Struktur ist,
bei der hydrophile Beschichtungen und modularisierte hydrophobe Lagen abwechselnd
verteilt sind, wobei:
die hydrophilen Beschichtungen die Oberflächen aus hydrophilem Material (31) sind
und durch Anfertigen von hydrophilen Materialien auf der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) gebildet sind;
und
Außenoberflächen der hydrophoben Lagen die Oberflächen aus hydrophobem Material (32)
sind, und die hydrophoben Lagen in engem Kontakt mit der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) angebracht sind.
8. Drehtrommel für die Lederherstellung nach Anspruch 1,
dadurch gekennzeichnet, dass die abwechselnd hydrophile und hydrophobe Oberflächenstruktur (3) eine Struktur ist,
bei der modularisierte hydrophile Lagen und modularisierte hydrophobe Lagen abwechselnd
verteilt sind, wobei:
Außenoberflächen der hydrophilen Lagen die Oberflächen aus hydrophilem Material (31)
sind, und die hydrophilen Lagen in engem Kontakt mit der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) angebracht sind;
und
Außenoberflächen der hydrophoben Lagen die Oberflächen aus hydrophobem Material (32)
sind, und die hydrophoben Lagen in engem Kontakt mit der Oberfläche der Innenwand
des Trommelkörpers (1) und/oder der Oberfläche der Rührstruktur (2) angebracht sind.
9. Drehtrommel für die Lederherstellung nach einem der Ansprüche 1-8, dadurch gekennzeichnet, dass die Rührstruktur (2) Leitbleche (21) und/oder vorspringende Stapel (22) umfasst,
und beim Drehprozess des Trommelkörpers (1) die Leitbleche (21) und/oder die vorspringenden
Stapel (22) wiederholt in die Badflüssigkeit im Trommelkörper (1) eintreten und diese
verlassen.
10. Drehtrommel für die Lederherstellung nach Anspruch 9, dadurch gekennzeichnet, dass, wenn die Rührstruktur (2) sowohl die Leitbleche (21) als auch die vorspringenden
Stapel (22) umfasst, die Leitbleche (21) und die vorspringenden Stapel (22) abwechselnd
entlang einer Umfangswandoberfläche des Trommelkörpers (1) verteilt sind.
1. Tambour rotatif de fabrication de cuir ayant une structure de surfaces hydrophiles
et hydrophobes en alternance (3),
caractérisé en ce qu'il comprend :
un corps de tambour (1) capable de tourner dans sa propre direction circonférentielle
;
une structure d'agitation (2) agencée dans le corps de tambour (1) ; et
une structure de surfaces hydrophiles et hydrophobes en alternance (3) dans laquelle
des surfaces de matériaux hydrophiles (31) et des surfaces de matériaux hydrophobes
(32) sont distribuées alternativement, la structure de surfaces hydrophiles et hydrophobes
en alternance (3) étant distribuée sur une surface d'une paroi intérieure du corps
de tambour (1) et/ou une surface de la structure d'agitation (2),
dans lequel, dans un procédé de rotation du corps de tambour (1), la structure de
surfaces hydrophiles et hydrophobes en alternance (3) entre dans et quitte à plusieurs
reprises un liquide pour bain dans le corps de tambour (1).
2. Tambour rotatif de fabrication de cuir selon la revendication 1,
caractérisé en ce que la structure de surfaces hydrophiles et hydrophobes en alternance (3) est une structure
dans laquelle des revêtements hydrophiles et des revêtements hydrophobes sont distribués
alternativement, dans lequel :
les revêtements hydrophiles sont les surfaces de matériaux hydrophiles (31) et sont
formés en préparant des matériaux hydrophiles sur la surface de la paroi intérieure
du corps de tambour (1) et/ou la surface de la structure d'agitation (2) ; et
les revêtements hydrophobes sont les surfaces de matériaux hydrophobes (32) et sont
formés en préparant des matériaux hydrophobes sur la surface de la paroi intérieure
du corps de tambour (1) et/ou la surface de la structure d'agitation (2).
3. Tambour rotatif de fabrication de cuir selon la revendication 1,
caractérisé en ce que la structure de surfaces hydrophiles et hydrophobes en alternance (3) est une structure
dans laquelle des revêtements hydrophiles et des surfaces originales polies de la
paroi intérieure du corps de tambour (1) et/ou de la structure d'agitation (2) sont
distribués alternativement, dans lequel :
les revêtements hydrophiles sont les surfaces de matériaux hydrophiles (31) et sont
formés en préparant des matériaux hydrophiles sur la surface de la paroi intérieure
du corps de tambour (1) et/ou la surface de la structure d'agitation (2) ; et
les surfaces originales polies de la paroi intérieure du corps de tambour (1) et/ou
de la structure d'agitation (2) sont les surfaces de matériaux hydrophobes (32).
4. Tambour rotatif de fabrication de cuir selon la revendication 1, caractérisé en ce que la structure de surfaces hydrophiles et hydrophobes en alternance (3) est une structure
formée en assemblant une pluralité de feuilles hydrophiles et hydrophobes modularisées,
dans lequel :
des surfaces extérieures des feuilles hydrophiles et hydrophobes sont des surfaces
distribuées alternativement des surfaces de matériaux hydrophiles (31) et des surfaces
de matériaux hydrophobes (32), et les feuilles hydrophiles et hydrophobes sont montées
en contact étroit avec la surface de la paroi intérieure du corps de tambour (1) et/ou
la surface de la structure d'agitation (2) .
5. Tambour rotatif de fabrication de cuir selon la revendication 1,
caractérisé en ce que la structure de surfaces hydrophiles et hydrophobes en alternance (3) est une structure
dans laquelle des feuilles hydrophiles modularisées et des revêtements hydrophobes
sont distribués alternativement, dans lequel :
des surfaces extérieures des feuilles hydrophiles sont les surfaces de matériaux hydrophiles
(31), et les feuilles hydrophiles sont montées en contact étroit avec la surface de
la paroi intérieure du corps de tambour (1) et/ou la surface de la structure d'agitation
(2) ; et
les revêtements hydrophobes sont les surfaces de matériaux hydrophobes (32) et sont
formés en préparant des matériaux hydrophobes sur la surface de la paroi intérieure
du corps de tambour (1) et/ou la surface de la structure d'agitation (2).
6. Tambour rotatif de fabrication de cuir selon la revendication 1,
caractérisé en ce que la structure de surfaces hydrophiles et hydrophobes en alternance (3) est une structure
dans laquelle des feuilles hydrophiles modularisées et des surfaces originales polies
de la paroi intérieure du corps de tambour (1) et/ou de la structure d'agitation (2)
sont distribuées alternativement, dans lequel :
des surfaces extérieures des feuilles hydrophiles sont les surfaces de matériaux hydrophiles
(31), et les feuilles hydrophiles sont montées en contact étroit avec la surface de
la paroi intérieure du corps de tambour (1) et/ou la surface de la structure d'agitation
(2) ; et
les surfaces originales polies de la paroi intérieure du corps de tambour (1) et/ou
de la structure d'agitation (2) sont les surfaces de matériaux hydrophobes (32).
7. Tambour rotatif de fabrication de cuir selon la revendication 1,
caractérisé en ce que la structure de surfaces hydrophiles et hydrophobes en alternance (3) est une structure
dans laquelle des revêtements hydrophiles et des feuilles hydrophobes modularisées
sont distribués alternativement, dans lequel :
les revêtements hydrophiles sont les surfaces de matériaux hydrophiles (31) et sont
formés en préparant des matériaux hydrophiles sur la surface de la paroi intérieure
du corps de tambour (1) et/ou la surface de la structure d'agitation (2) ; et
des surfaces extérieures des feuilles hydrophobes sont les surfaces de matériaux hydrophobes
(32), et les feuilles hydrophobes sont montées en contact étroit avec la surface de
la paroi intérieure du corps de tambour (1) et/ou la surface de la structure d'agitation
(2).
8. Tambour rotatif de fabrication de cuir selon la revendication 1,
caractérisé en ce que la structure de surfaces hydrophiles et hydrophobes en alternance (3) est une structure
dans laquelle des feuilles hydrophiles modularisées et des feuilles hydrophobes modularisées
sont distribuées alternativement, dans lequel :
des surfaces extérieures des feuilles hydrophiles sont les surfaces de matériaux hydrophiles
(31), et les feuilles hydrophiles sont montées en contact étroit avec la surface de
la paroi intérieure du corps de tambour (1) et/ou la surface de la structure d'agitation
(2) ; et
des surfaces extérieures des feuilles hydrophobes sont les surfaces de matériaux hydrophobes
(32), et les feuilles hydrophobes sont montées en contact étroit avec la surface de
la paroi intérieure du corps de tambour (1) et/ou la surface de la structure d'agitation
(2).
9. Tambour rotatif de fabrication de cuir selon l'une quelconque des revendications 1
à 8, caractérisé en ce que la structure d'agitation (2) comprend des déflecteurs (21) et/ou des pieux en saillie
(22), et dans le procédé de rotation du corps de tambour (1), les déflecteurs (21)
et/ou les pieux en saillie (22) entrent dans et quittent à plusieurs reprises le liquide
pour bain dans le corps de tambour (1).
10. Tambour rotatif de fabrication de cuir selon la revendication 9, caractérisé en ce que lorsque la structure d'agitation (2) comprend à la fois les déflecteurs (21) et les
pieux en saillie (22), les déflecteurs (21) et les pieux en saillie (22) sont distribués
alternativement le long d'une surface de paroi circonférentielle du corps de tambour
(1).