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EP2177680A1 - Clapet anti-retour - Google Patents

Clapet anti-retour Download PDF

Info

Publication number
EP2177680A1
EP2177680A1 EP08018180A EP08018180A EP2177680A1 EP 2177680 A1 EP2177680 A1 EP 2177680A1 EP 08018180 A EP08018180 A EP 08018180A EP 08018180 A EP08018180 A EP 08018180A EP 2177680 A1 EP2177680 A1 EP 2177680A1
Authority
EP
European Patent Office
Prior art keywords
flap
seat
axis
seal
oval shape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08018180A
Other languages
German (de)
English (en)
Inventor
Bernhard Kessel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kessel GmbH
Original Assignee
Kessel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kessel GmbH filed Critical Kessel GmbH
Priority to EP08018180A priority Critical patent/EP2177680A1/fr
Publication of EP2177680A1 publication Critical patent/EP2177680A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/02—Shut-off devices
    • E03F7/04—Valves for preventing return flow

Definitions

  • the invention relates to a backflow closure according to the preamble of patent claim 1.
  • the flap and the seat mouth circular shape. Since the seat opening and the flap are arranged in the installed position vertically or perpendicular to the flow axis, the flap does not close reliably under their own weight, as mentioned several times in the publication, because the weight does not develop in the closing direction, noteworthy force component.
  • the seat has a circular inner diameter according to the pipe nominal width defined by the seat.
  • a backflow stop that does not close properly in a flow-free condition will allow channel odors and vermin to pass through largely unhindered.
  • the seat mouth is inclined at an angle obliquely receding obliquely to the direction of flow upward, so that the weight of the flap pivotable about the axis lying above produces a force component in the closing direction with which the Closes flap reliably and prevents penetration of backwater, channel gases and vermin.
  • the flap and the muzzle have an approximately horseshoe-shaped shape, ie, the lower half corresponds to a semicircle with the radius of the nominal tube diameter of the seat. At this semicircle close up parallel straight edge regions, which are interconnected by a transverse edge region.
  • the skew of the seat opening and the flap is now also used in circular valves and circular seat opening in practice of favoring the automatic closing action of the flap, but also to achieve when using a forced closing mechanism for the flap more favorable force application conditions in the forced closing position.
  • a significant skew in the circular shape of the flap and the seat opening means that at a circle diameter corresponding to the nominal pipe diameter a constriction in the flow path, since the inclined circle forms a closer in the vertical direction ellipse over the circle corresponding to the nominal pipe diameter, or at a circle diameter greater than the pipe nominal width in the transverse direction significantly more installation space for the seat opening and the flap and a widening to the seat mouth are needed.
  • the inclined circle forms a closer in the vertical direction ellipse over the circle corresponding to the nominal pipe diameter, or at a circle diameter greater than the pipe nominal width in the transverse direction significantly more installation space for the seat opening and the flap and a widening to the seat mouth are needed.
  • the invention is based on the gift to provide a backwater valve that avoids the disadvantages of enlarged installation space in the transverse direction or flow widenings or flow constrictions and allows a geometric optimum between the circular cross section of the seat, which defines the nominal pipe diameter, and the seat opening.
  • the oval shape is axisymmetric, for example, with mutually orthogonal vertical and transverse axes in each case even mirror symmetry.
  • the longer oval axis is approximately perpendicular and the shorter oval axis is arranged approximately parallel to the upper axis about which the flap is pivotable.
  • the shorter oval axis corresponds at least approximately to the nominal pipe diameter in the seat.
  • the longer oval axis is then, depending on the angle of the seat opening, possibly significantly longer than the nominal pipe diameter.
  • the oval shape resembles an ellipse or even an ellipse.
  • the ellipse corresponds at least approximately to the line of intersection between a circular cylinder corresponding to the nominal pipe diameter of the tubular seat with the flow axis in the seat as the cylinder axis and the obliquely inclined plane of the seat opening.
  • the larger the angle the slimmer the oval shape or ellipse.
  • Even at a desirably large angle flow restrictions or flow expansions are avoided.
  • the angle is about 10 °, although it can be up to 45 ° due to the oval shape of the flap and the seat mouth.
  • a seal is provided in each case on the seat and on the flap, wherein the seal, preferably in a plastic two-component technique, can be formed with the seat or with the flap and can be sufficiently elastic.
  • the seat muzzle forming seal on the seat may have a widening, and may form the seal on the flap a largely tapered cross-section sealing lip, which engages in the closed position of the flap at least partially in the expansion.
  • a clear sealing situation prevents the penetration of backwater, sewer gases and / or vermin.
  • a forced-closing mechanism are trapped by the interaction between the sealing lip and the expansion mostly trapped in the lower part of the backflow stopper contaminants, especially in faecal wastewater, either under the forced closing force or squeezed together or pressed into the seals that even with moderate forced closing force a perfect sealing effect can be achieved.
  • the seal of the flap per se is round or circular, and inserted into a socket receiving the oval shape of the flap and thus brought into an oval shape of the flap approximately corresponding oval shape. It is thus possible to use a standard circular seal which, when installed, receives the oval shape of the flap.
  • the seal of the flap can already be formed with the oval shape of the flap corresponding oval shape.
  • the above applies, of course, accordingly for the seal of the seat, if the seat is also equipped with a seal.
  • the gasket may be longer on the seat in the lower area in the direction of the flow axis than in the upper area below the axis about which the flap pivots. This gives the seal at the seat in the lower region a longer suspension travel or a softer deformation behavior, which nevertheless allows a satisfactory sealing effect of the backflow closure in the event of a trapped contamination.
  • the flap In order to be able to close the flap at least forcibly, if necessary even forcibly open and keep open, the flap carries in an expedient embodiment at least one web having web for a engageable on the flap mechanism. This web can be designed so that it transmits the forced closing force to the lower area of the flap.
  • the flap and seat form an insert assembly for an inspection and / or backwater pit.
  • This insert assembly can thus be replaced at any time, complete or just the flap or seat.
  • the insert assembly can be temporarily removed for cleaning or inspection work in the well.
  • a backwater valve S which is by means of a mechanism M at least zwangsch flourishbar, and also positively openable and open
  • a prerequisite is, however, that the seat opening B is even and inclined in the installed position of the backflow closure S at an angle ⁇ .
  • the skew can be for example about 10 °, but can also be selected with an angle up to 45 °.
  • the inclined position favors the automatic closing of the backflow stop S under the dead weight of the flap K and also creates better power transmission conditions, if a mechanism M should be provided at least for positive closure of the flap and to keep the flap K closed.
  • Fig. 1 shows an inspection or backwater IS for wastewater engineering purposes, especially for faecal wastewater.
  • a base body 1 for example made of plastic, opens a feed pipe 2 and an outlet pipe socket 3, which extend with a slight slope and define a flow axis Z with normal flow direction through the base body 1.
  • the inlet pipe socket 2 defines, for example, a nominal pipe width NW, which is also present in a generally tubular seat 13 of the backflow closure S.
  • a cover 5 is detachably fixed, in which a mechanism M is mounted at least for positive closure of the backflow closure S, in the embodiment shown in FIG Fig.
  • the mechanism M has a manually or motor about an axis b rotatable lever 7 in the lid 5, which optionally at least one here a cam track 9 and an opening hook 10 engaging web 8 of the flap K attacks, and in the in Fig. 1 shown position keeps the backwater stopper S closed with a defined positive closing force. If the lever 7 is rotated clockwise, he finally attacks the opening hook 10 and he pulls the flap K from the closed position shown in an open position in which he holds the flap K open.
  • the flap K can pivot freely under its own weight about an overhead axis X, for example, as soon as wastewater in the direction of the flow axis Z flows through from left to right and the Flap K imprints, or if in the event of a backwater from the right entering sewage pressed even more firmly in the closed position under its own weight or a resulting force component on the seat opening B flap.
  • the backwater stopper S does not necessarily have to be in an inspection or backstop bay, as in Fig. 1 can also be installed in a lifting plant, a sewage station, a dewatering station, a floor drain or a transitional shaft or a general shaft or the like, ie, in a sewage flow path, in which possibly a backwater situation may occur or in one Wastewater path in which downstream of the back flow of sewer gas or the ingress of pests should be prevented.
  • the flap K has a transverse shaft 11 which defines the overhead axis X and is inserted into a socket 12 of the seat 13 (or alternatively the base 1, not shown).
  • the seat 13 is tubular z. B. formed with the pipe nominal width NW and has the angle ⁇ at the top opposite to the flow direction Z oblique, flat seat opening B.
  • a seal 16 is mounted, as well as on the seat 13, a seal 14, wherein the seal 14, the oblique seat opening B defined, and in the direction of the flow axis Z down is longer than above.
  • the illustrated seal 16 of the flap K terminates in a circumferential pointed sealing lip 16a, while the seal 14 of the seat 13 has a mouth-side widening 14a, so that the sealing lip 16a in the closed position shown in the lower region of the backflow closure S slightly penetrates into the mouth B.
  • a seal could also be provided only on the flap or only on the seat, or a blunt sealing system could be selected.
  • the flap K has z. B. a flat or cambered, possibly stiffened, base body 15 with a lower flap portion 17 and a remaining portion 18 of the flap K.
  • the flap K is for example a plastic molded part, which is preferably formed integrally with the gasket 16 in two-component technology.
  • the flap K like the seat mouth B, has an axisymmetric oval shape R (FIG. Fig. 2 ) with the vertical axis H perpendicular to the axis X and the transverse axis Q of the oval parallel to the axis X.
  • the oval shape R even defines an ellipse EL, at least approximately corresponding to a line of intersection between the pipe nominal width NW of the seat 13 corresponding circular cylinder, if necessary, with the flow axis Z as the cylinder axis and a lying at the angle ⁇ of the inclination of the seat opening B level , This can mean that ( Fig.
  • the transverse axis Q approximately corresponds to the nominal diameter NW, while the vertical axis H is longer than the nominal diameter NW.
  • the angle ⁇ between the plane of the seat opening B and a plane perpendicular to the flow axis Z is expediently up to 10 °, but may be up to 45 ° in exceptional cases. Thanks to the oval shape of the flap K and the seat mouth B flow restrictions or flow expansions in the passage region of the seat 13 to the seat opening B are avoided even at such strong angles that of the full circle corresponding to the nominal pipe diameter NW differ. In the transverse direction, the flap K requires only an installation space corresponding to the nominal pipe diameter NW.
  • the seat 13 has an approximately perpendicular to the flow axis Z lying circular end, in which a seal 21 may be provided which sealingly cooperates with a formed in the base body 1 at the end of Zulaufrohrstutzens 2 shoulder 22 when the insert assembly E is inserted properly.
  • the seal 16 of the flap K is inserted into a circumferential edge-side frame 20 of the flap body 15.
  • the seal 16 may be circular in shape and be brought into the oval shape by the oval shape of the socket 20, or is formed from the outset oval with the flap K or separately.
  • the seal 14 of the seat can either be formed round and forced by the seat 13 in the oval shape, or can be made from the outset with an oval shape, possibly separated from the seat 13.
  • Fig. 2 8 further webs 8a are formed on both sides of the webs, which additionally stabilize the shaft 11.
  • the transverse axis Q which is approximately parallel to the axis X, is about as long as the nominal tube width NW, while the vertical axis H of the oval or the ellipse R, EL is significantly longer than the nominal tube width NW, depending on the angle ⁇ ,
  • Fig. 3 the insert assembly E is shown in perspective with located in the closed position flap K.
  • an end flange 23 is connected, which in Fig. 1 is inserted along the shoulder 22 in the base body 1 and positioned, for example, by the lid 5.
  • two lugs 24 are likely to be provided, which form the receptacle 12 for the shaft 11.
  • the oval shape R or the ellipse is chosen so that in a view along the flow axis Z located in the closed position. Flap K and the seat opening B the same as the full circle approximately according to the full circle of the nominal pipe diameter NW. This leads to ( Fig. 3 ) also that the seat opening B and the flap K are narrower in the transverse direction than the outer dimension between the side edges of the end flange 23, so that the base body 1 can be relatively narrow in this area.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Check Valves (AREA)
EP08018180A 2008-10-16 2008-10-16 Clapet anti-retour Withdrawn EP2177680A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08018180A EP2177680A1 (fr) 2008-10-16 2008-10-16 Clapet anti-retour

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08018180A EP2177680A1 (fr) 2008-10-16 2008-10-16 Clapet anti-retour

Publications (1)

Publication Number Publication Date
EP2177680A1 true EP2177680A1 (fr) 2010-04-21

Family

ID=40435045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08018180A Withdrawn EP2177680A1 (fr) 2008-10-16 2008-10-16 Clapet anti-retour

Country Status (1)

Country Link
EP (1) EP2177680A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2400659R1 (es) * 2011-04-11 2013-11-27 Uralita Sist S De Tuberias S A Arqueta de paso para instalaciones de saneamiento.
DE102014116435A1 (de) 2014-11-11 2016-05-12 ACO Severin Ahlmann GmbH & Co Kommanditgesellschaft Rückstauverschluss

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313458C2 (de) 1983-04-11 1986-04-03 Guss- Und Armaturwerk Kaiserslautern Nachf. Karl Billand Gmbh & Co, 6750 Kaiserslautern Hebeanlage für fäkalienhaltige Abwässer
DE8712537U1 (de) * 1987-09-17 1987-11-05 Kessel, Bernhard, 8071 Lenting Reinigungsrohr für druchgehende Abwasser-Rohrleitungen
DE9413322U1 (de) * 1994-08-18 1995-12-21 Fa. Franz Viegener Ii, 57439 Attendorn Rückstauvorrichtung
DE19622982A1 (de) * 1995-08-28 1997-03-06 Werner Nill Vorrichtung zur Verhinderung des Rückflusses von Abwässern
DE19910254C2 (de) 1999-03-08 2003-01-02 Kessel Gmbh Hebeanlage für Abwasser
BE1016948A6 (fr) * 2006-01-18 2007-10-02 Puljiz Georges Emile Siphon de cour (sterfput).

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313458C2 (de) 1983-04-11 1986-04-03 Guss- Und Armaturwerk Kaiserslautern Nachf. Karl Billand Gmbh & Co, 6750 Kaiserslautern Hebeanlage für fäkalienhaltige Abwässer
DE8712537U1 (de) * 1987-09-17 1987-11-05 Kessel, Bernhard, 8071 Lenting Reinigungsrohr für druchgehende Abwasser-Rohrleitungen
DE9413322U1 (de) * 1994-08-18 1995-12-21 Fa. Franz Viegener Ii, 57439 Attendorn Rückstauvorrichtung
DE19622982A1 (de) * 1995-08-28 1997-03-06 Werner Nill Vorrichtung zur Verhinderung des Rückflusses von Abwässern
DE19910254C2 (de) 1999-03-08 2003-01-02 Kessel Gmbh Hebeanlage für Abwasser
BE1016948A6 (fr) * 2006-01-18 2007-10-02 Puljiz Georges Emile Siphon de cour (sterfput).

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2400659R1 (es) * 2011-04-11 2013-11-27 Uralita Sist S De Tuberias S A Arqueta de paso para instalaciones de saneamiento.
DE102014116435A1 (de) 2014-11-11 2016-05-12 ACO Severin Ahlmann GmbH & Co Kommanditgesellschaft Rückstauverschluss
EP3026185A1 (fr) 2014-11-11 2016-06-01 ACO Severin Ahlmann GmbH & Co. KG Fermeture de retenue

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