A plastic gully and an outlet portion and a plastic gully portion for use in such a plastic gully

Description

[0001] The invention relates to a plastic gully comprising a shaft said shaft being provided with an integral branch portion engaging a discharge portion.

[0002] A plastic gully of this type is known from NL-A-7111224. This plastic gully presents the disadvantage that its manufacture is rather difficult due to the use of rather complicated moulds for moulding said gully with an integral branch portion and a discharge portion.

[0003] For this reason it has been proposed in practice to manufacture a plastic gully of this type by manufacturing a plastic gully with an integral opening in which a separate discharge portion is fixed by means of an adhesive connection.

[0004] These adhesive connections are disadvantageous as narrow tolerances should be maintained to obtain an optimum adhesive connection whereas an instalment of said discharge portion is very time-consuming.

[0005] The use of an adhesive is the more cumbersome because the evil smell and evaporation of harmful volatile agents in the adhesive.

[0006] The quality of an adhesive connection in addition being extremely dependent upon the person, who applies the same, great differences in quality of said adhesive connection may occur and it therefore frequently happens that the adhesive connections of discharge portions adhered to plastic gullies will get lost during their conveyance.

[0007] As plastic gullies of this type accommodated beneath traffic roads are also subjected to various different loads, the rigid adhesive connection will be easily damaged after instalment of the gullies in a conduit system.

[0008] The main aim of the present invention is now to provide a plastic gully of the abovementioned type allowing an extremely rapid fixing of the discharge portion without the use of any adhesive and a very flexible connection between the discharge portion and the plastic gully so that damages and leakages of the connection during conveyance of the plastic gullies after having mounted the discharge portion are almost absent and moreover no narrow tolerances need to be maintained.

[0009] This aim is attained in that the discharge portion snappingly engages the connecting branch position and a sealing ring is accommodated within the snap connection.

[0010] Obviously a discharge portion may thus be received in a connecting branch portion in an extremely rapid and convenient manner, thereby forming an optimum connection between the said connecting branch portion and the plastic gully. Moreover, in this manner a very flexible connection between the discharge portion and the plastic gully is obtained so that damages and leakages of the connection during conveyance of the plastic gullies are, after mounting the discharge portion, almost excluded, whilst moreover, no narrow tolerances need to be maintained.

[0011] It should be noted that GB-A-2.031.480 figures 9 to 11 discloses a snap connection between a discharge portion and an integral branch portion in the bottom of a manhole and a sealing ring located at the outside of the manhole.

[0012] However, this connection presents the disadvantages that rather narrow tolerances must be met for the inner circumference of the opening and the outerside of the connecting portion (vide fig. 10 of GB-A-2.031.480). Moreover, this connection is not sufficiently flexible.

[0013] The invention overcomes this problem by incorporating the sealing ring in the snap connection allowing a very flexible connection between the branch portion and the outlet portion.

[0014] Very advantageously the discharge portion is held in a snapping engagement with the connecting branch portion by pressing the discharge portion adequately from inside the plastic gully through the opening bounded by the connecting branch portion.

[0015] This provides the advantage that an extremely good engagement may be rapidly obtained.

[0016] In a very preferred embodiment the snap connection between the discharge portion and the gully shaft and the sealing ring in the snap connection are located within the inner side of the branch portion.

[0017] Very advantageously the connecting branch portion comprises cross-sectionally curved connecting branch portion side walls, adjoining the curved connecting branch portion and wall parts, so that a discharge portion can be used comprising spherical side walls, which discharge portions provide a great lateral stability to the discharge portion. More particularly leakage at the sides of the discharge portion is avoided in this manner.

[0018] It is to be recommended in particular that the discharge portion is connected with a removable stench screen to easier clean plastic gullies which are being used as inspection gullies or as sewage gullies.

[0019] To obtain a removable stench screen said stench screen is clampingly retained which preferably is attained by means of two ribs provided on the inner wall of the discharge portion clampingly engaging the stench screen between the-top of the connecting branch portion.

[0020] The invention will be illustrated with respect to an embodiment in the drawings, wherein

Fig. 1 is a lateral section of a plastic gully according to the invention;

Fig. 2 is a section according to line II-II;

Fig. 3 is a side view of a plastic gully according to the invention and

Fig. 4 illustrates a view according to line IV-IV.

Fig. 1 illustrates a plastic gully 1 conveniently consisting of polyvinylchloride. The plastic gully 1 comprises a shaft connected to a bottom 9.

[0021] The used plastic gully consists in many cases of two components, the component as illustrated in the figures functioning as lower part of the plastic gully upon which lower part the upper component is mounted.

[0022] A pipe part or shaft 1a is provided with a connecting branch portion 4 by heating the area to be widened in the watt of the gully, by means of electric elements and by subsequently providing a widened portion by means of an inner and outer mould, said portion forming a connecting branch 4 after removal of the wall.

[0023] The connecting branch portion 4 is provided with an inwardly directed wall portion forming an inwardly directed edge 10.

[0024] The plastic gully according to the invention also comprises a plastic discharge portion 2, provided with a ledge-shaped elevation 11 and a second annular edge 12 located at distance from the ledge shaped elevation 11.

[0025] On outwardly pressing discharge portion 2 through opening 8 from the inner side of the plastic shaft 1 a, the inwardly directed edge 10 will be slightly deformed and will subsequently be set behind the ledge-shaped elevation 11.

[0026] In this manner an optimum snapping engagement 3 is obtained.

[0027] A sealing ring 5 provided in.the space between ledge-shaped elevation 11 and annular edge 12 simultaneously ensures an optimum seal, since said sealing ring 5 seals the inner side of shaft 1 and the outer side of discharge portion 2.

[0028] A plastic gully in accordance with the invention has to be provided with a stench screen 6 being clampingly retained between the upper wall of discharge portion 2 and ledges 7, provided on the inner side of discharge portion 2.

[0029] An easy removal of stench screen 6 enables an appropriate cleaning of the plastic gully, thus creating a good open connection between discharge portion 2 and gully shaft portion 1a.

[0030] The connecting branch portion advantageously comprises, as seen in cross section, curved connecting branch portion side walls 15a and 15b adjoining the cylindrically shaped connecting branch end wall portions 16a and 16b.

[0031] The use of such a connecting branch portion 4 results in an easy instalment of a discharge portion 2 comprising, as seen in cross-section, the same curved side walls 13a and 13b adjoining the cylindrically curved end wall portions 14a and 14b of the dischage portion.

[0032] In the above manner an optimum seal and flexible connection are obtained as well as a very high natural stability of the discharge portion respectively, in comparison with a discharge portion comprising flat side walls.

[0033] It is observed that the reference numerals in the claims are not intended to restrict the scope thereof, but are only denoted for clarification.

Claims

1. A plastic gully (1) comprising a shaft (1a) said shaft being provided with an integral branch portion (4) engaging a discharge portion (2), characterized in that the discharge portion (2) snappingly engages the connecting branch portion (4) and a sealing ring (5) is accommodated within the snap connection (3).

2. A plastic gully as claimed in claim 1, characterized in that the snap connection between the discharge portion (2) and the gully shaft (1a) and the sealing ring (5) in the snap connection are located within the inner side of the branch portion (4)

3. A plastic gully as claimed in claim 1 or 2, characterized in that the discharge portion (2) is connected to a removable stench screen (6) which is preferably clampingly retained on the inner wall of the outlet portion (2), preferably by means of two ribs (7).

4. A plastic gully as claimed in claim 1 to 3, characterized in that the connection branch portion (4) comprises cross sectionally curved outlet branch portion side walls (15a, 15b) adjoining curved connecting branch portion end wall parts (16a, 16b).

5. A plastic gully as claimed in claim 4, characterized in that the curved connecting branch portion end wall parts (16a, 16b) are curved cylindrically.

6. A plastic gully as claimed in claims 1 to 5, characterized in that, near the engaging point of connecting branch portion (4) and discharge portion (2) cross-sectionally curved side walls (13a, 13b) are provided adjoining the curved side end wall portions (14a, 14b) of the discharge portion.

7. A plastic gully as claimed in claim 6, characterized in that, curved end side wall portions are cylindrically curved discharge end wall portions (14a, 14b).

8. An outlet portion (2) and/or a plastic gully portion suitable for use in a plastic gully as claimed in any one or more of the preceding claims 1-7.

Ansprüche

1. Kunststoffabfluß (1), mit einem Schaft (1a), wobei der Schaft mit einem mit einem Auslaßteil (2) in Eingriff stehenden einstückigen Abzweigteil (4) versehen ist, dadurch gekennzeichnet, daß der Auslaßteil (2) mit dem Verbindungsabzweigteil (4) in Rasteingriff steht und ein Dichtungsring (5) in der Rastverbindung (3) angebracht ist.

2. Kunststoffabfluß nach Anspruch 1, dadurch gekennzeichnet, daß die Rastverbindung zwischen dem Auslaßteil (2) und dem Abflußschaft (1a) sowie der Dichtungsring (5) in der Rastverbindung innerhalb der Innenseite des Abzweigteils (4) angeordnet sind.

3. Kunststoffabfluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Auslaßteil (2) mit einem abnehmbaren Geruchssieb (6) verbunden ist, das vorzugsweise durch Klemmwirkung an der Innenwand des Auslaßteils (2), vorzugsweise mittels zweier Rippen (7), gehalten ist.

4. Kunststoffabfluß nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Verbindungsabzweigteil (4) im Querschnitt gekrümmte Auslaßabzweigteilseitenwände (15a, 15b) umfaßt, die an gekrümmte Verbindungsabzweigteilendwandteile (16a, 16b) angrenzen.

5. Kunststoffabfluß nach Anspruch 4, dadurch gekennzeichnet, daß die gekrümmten Verbindungsabzweigteilendwandteile (16a, 16b) zyindrisch gekrümmt sind.

6. Kunststoffabfluß nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß nahe dem Eingriffspunkt des Verbindungsabzweigteils (4) und des Auslaßteils (2) im Querschnitt gekrümmte Seitenwände (13a, 13b) vorgesehen sind, die an die gekrümmten Seitenendwandteile (14a, 14b) des Auslaßteils angrenzen.

7. Kunststoffabfluß nach Anspruch 6, dadurch gekennzeichnet, daß die gekrümmten Endseitenwandteile zylindrisch gekrümmte Auslaßendwandteile (14a, 14b) sind.

8. Auslaßteil (2) und/oder Kunststoffabflußteil, geeignet zur Verwendung in einem Kunststoffabfluß nach einem oder mehreren der vorhergehenden Ansprüche 1 bis 7.

Revendications

1. Bouche d'égout en matière plastique (1) comportant un avaloir (1a), ledit avaloir étant pourvu d'une partie d'embranchement (4) solidaire qui s'emboîte avec une partie d'évacuation (2), caractérisée en ce que la partie d'évacuation (2) s'emboîte par enclenchement avec la partie d'embranchement de raccordement (4) et en ce qu'une bague d'étanchéité (5) est logée à l'intérieur de l'assemblage à enclenchement (3).

2. Bouche d'égout en matière plastique, telle que définie dans la revendication 1, caractérisée en ce que l'assemblage à enclenchement entre la partie d'évacuation (2) et l'avaloir de bouche d'égout (1a), et la bague d'étanchéité (5) logée dans l'assemblage à enclenchement sont situés à l'intérieur de la face interne de la partie d'embranchement (4).

3. Bouche d'égout en matière plastique, telle que définie dans la revendication 1 ou 2, caractérisée en ce que la partie d'évacuation (2) est reliée à un siphon inodore amovible (6) qui, d'une manière préférable, est retenu par serrage sur la paroi interne de la partie d'évacuation (2), de préférence, au moyen de deux nervures (7).

4. Bouche d'égout en matière plastique, telle que définie dans la revendications 1 à 3, caractérisée en ce que la partie d'embranchement de raccordement (4) comporte des parois latérales (15a, 15b) de partie d'embranchement d'évacuation, courbes en section transversale, qui sont attenantes à des portions de parois d'extrémité courbes (16a, 16b) de partie d'embranchement de raccordement.

5. Bouche d'égout en matière plastique, telle que définie dans la revendication 4, caractérisée en ce que les portions de parois d'extrémité courbes (16a, 16b) de partie d'embranchement de raccordement sont courbées cylindriquement.

6. Bouche d'égout en matière plastique, telle que définie dans la revendications 1 à 5, caractérisée en ce qu'à proximité du point d'emboîtement de la partie d'embranchement de raccordement (4) et de la partie d'évacuation (2), sont prévues des parois latérales courbes en section transversale (13a, 13b) qui sont attenantes aux portions de parois d'extrémité latérales courbes (14a, 14b) de la partie d'évacuation.

7. Bouche d'égout en matière plastique, telle que définie dans la revendication 6, caractérisée en ce que les portions de parois d'extrémité latérales courbes sont des portions de parois d'extrémité d'évacuation (14a, 14b) courbées cylindriquement.

8. Partie d'évacuation (2) et/ou partie de bouche d'égout en matière plastique adaptée pour être utilisée dans une bouche d'égout en matière plastique, telle que définie dans l'une quelconque des revendications précédentes 1 à 7, au moins.

Drawing