EP 1509700 B1 20110420 - MULTISTAGE PUMP, PARTICULARLY OF THE IMMERSION TYPE
Title (en)
MULTISTAGE PUMP, PARTICULARLY OF THE IMMERSION TYPE
Title (de)
MEHRSTUFIGE TAUCHPUMPE
Title (fr)
POMPE A PLUSIEURS ETAGES, EN PARTICULIER DU TYPE IMMERGE
Publication
Application
Priority
- IB 0301872 W 20030514
- IT VI20020095 A 20020515
Abstract (en)
[origin: WO03098049A1] A multistage pump, particularly of the immersion type, comprises an outer tubular jacket (2) defining a longitudinal axis (L), a plurality of adjacent stages (3) which are arranged hydraulically in series and inserted slidably inside the tubular jacket (2), and a main shaft (4) which is coaxial with the longitudinal axis (L). Each stage has at least one impeller (5) coupled to the main shaft (4) and a diffusion duct (6), means for connecting an electric motor (24), an intake element (7) and a delivery element (8) mounted respectively upstream and downstream of the stages (3) so as to lock them axially. The intake element (7) and delivery element (8) are secured removably to the jacket (2) close to its longitudinal ends by means of substantially transverse connecting members (9) which may be accessed from the outside of the jacket (2). The delivery element (8) comprises a hollow tubular portion (14) which houses inside it a non-return valve (15) inserted slidably so that it may be extracted axially outwards.
IPC 8 full level
F04D 1/06 (2006.01); F04D 29/42 (2006.01); F04D 29/62 (2006.01)
CPC (source: EP)
F04D 1/063 (2013.01); F04D 13/10 (2013.01); F04D 29/044 (2013.01); F04D 29/426 (2013.01); F04D 29/4293 (2013.01); F04D 29/628 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 03098049 A1 20031127; AT E506541 T1 20110515; AU 2003232947 A1 20031202; CN 100366914 C 20080206; CN 1653269 A 20050810; DE 60336810 D1 20110601; EP 1509700 A1 20050302; EP 1509700 B1 20110420; IT VI20020095 A1 20031117
DOCDB simple family (application)
IB 0301872 W 20030514; AT 03727746 T 20030514; AU 2003232947 A 20030514; CN 03811012 A 20030514; DE 60336810 T 20030514; EP 03727746 A 20030514; IT VI20020095 A 20020515