EP0235767B1 - Dispositif de blocage pour liquides - Google Patents

Dispositif de blocage pour liquides Download PDF

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Publication number
EP0235767B1
EP0235767B1 EP87102851A EP87102851A EP0235767B1 EP 0235767 B1 EP0235767 B1 EP 0235767B1 EP 87102851 A EP87102851 A EP 87102851A EP 87102851 A EP87102851 A EP 87102851A EP 0235767 B1 EP0235767 B1 EP 0235767B1
Authority
EP
European Patent Office
Prior art keywords
chamber
shut
liquid
seat
valve
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.)
Expired - Lifetime
Application number
EP87102851A
Other languages
German (de)
English (en)
Other versions
EP0235767A3 (en
EP0235767A2 (fr
Inventor
Paul Wenger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT87102851T priority Critical patent/ATE52120T1/de
Publication of EP0235767A2 publication Critical patent/EP0235767A2/fr
Publication of EP0235767A3 publication Critical patent/EP0235767A3/de
Application granted granted Critical
Publication of EP0235767B1 publication Critical patent/EP0235767B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • E03F5/16—Devices for separating oil, water or grease from sewage in drains leading to the main sewer

Definitions

  • the invention relates to a shut-off device for liquids of the type specified in the preamble of claim 1.
  • a device of this type is known from GB-A 2 129 027.
  • the closure piece is held in the closed position by a small force.
  • a counterweight is used for this.
  • the construction is such that no contaminants can accumulate on the counterweight, which would increase the force holding the locking piece in the closed position.
  • oil or petrol that flows onto the street or onto a property in the event of an oil accident gets into the pipe network in the same way as rainwater through the street drain and the sewer inlet shafts before the oil or Gasoline on the street or property could be prevented. From the sewage system, the oil gets into open water, because of the oil or petrol residues remaining in the raw butts for a long time. This has the well-known, serious sequelae, which were previously only avoidable to a limited extent using expensive means.
  • the invention seeks to remedy this.
  • the invention achieves the object of creating a shut-off device for liquids which locks when an arbitrary amount of a liquid of lower density occurs and opens when a liquid of higher density occurs.
  • the facility with a gully i.e. H. is used in the upper end of a sewage system of a sewage system, the liquid of higher density being water, that of lower density being oil or gasoline, it is an oil barrier which is particularly suitable for the purposes of water protection.
  • this is apparently not the only usability of the facility, especially since. B. malfunctions in chemical plants u.
  • the entry of a liquid other than the intended in a line must be avoided, for which the device according to the invention can be used if the other liquid has a lower density than that.
  • the device's shut-off device also acts as an odor trap and as a check valve.
  • the liquid of lower density also acts in the closing direction of the closure piece.
  • the effect as a check valve can be maintained or canceled.
  • the advantages achieved by the invention are essentially to be seen in the fact that the barrier acts on any amount of the less dense liquid.
  • the device according to the invention is structurally simple and easy to clean. It can be designed as an insert made of cast iron or plastic that can be inserted into the upper end of the inlet shaft and is easily removable. For the liquid of higher density, there is practically no risk of icing in the case of water, especially if the shut-off element is, as is preferred, a flap valve.
  • the single figure shows a vertical section through a shut-off device for liquids for use as an oil barrier in the upper end of a sewer drainage shaft.
  • the device shown is designed as an insert 2 with a rectangular plan that can be inserted into the upper end of a partially shown inlet shaft I, the basic structure of which consists of the following parts: a first chamber 4, open at the top, under the lock grate 5 of the inlet shaft I, a closed one second chamber 7, a partition 8 between the two chambers 4 and 7, an overflow 10 of the first chamber 4, which is formed by a passage opening in the uppermost part of the partition 8, an outlet valve 12 designed as a flap valve with a flap 13 and a flap seat 14 at the bottom 15 of the first chamber 4 and a flap 19 arranged via a flap seat 16 on the bottom 17 of the second chamber 7, the flaps 13 and 19 closed in the illustrated rest position being firmly connected to one another and around a horizontal one arranged on the dividing wall 8 Flap axis 20 are pivotable.
  • the bottom 15 of the first chamber 4 and the bottom 17 of the second chamber 7 are arranged symmetrically with respect to the plane of the partition 8, starting from the flap axis 20, downwards.
  • Under the second chamber 7 there is a space 34 which is delimited by a wall 22 which is almost flush with the partition 8 and a further wall 23 and which has an opening 25 adjoining the opening of the seat 16 and by an opening 26 at the lower end of the wall 22 communicates with a space 27 under the first chamber 4.
  • a cap 30 is attached to the inlet side of the overflow 10, which cap is open at the bottom and is connected to the partition 8 at its lateral edges and at its upper edge in order to prevent splash water from the first chamber 4 from flowing over the Overflow 10 reaches the second chamber 7.
  • a hanging, non-return valve 31 is arranged on the outlet side of the overflow 10. The first chamber 4 is accessible after the sluice grate 5 has been removed, the second chamber 7 is accessible after the removal of a watertight closing piece 33.
  • the flap 13 of the exhaust valve 12 is located under the flap seat 14, the flap 19 is arranged above its flap seat 16. Accordingly, a liquid in the first chamber 4 acts on the flap 13 of the outlet valve 12 in the opening direction, and a liquid in the second chamber 7 acts on the second flap 19 in the closing direction.
  • the two flaps 13 and 19 are resiliently held in the closed position in that the flap 13 of the outlet valve 12 is made lighter than the flap 19 (as shown in the drawing by the thickness below separated the flaps 13 and 19 is expressed).
  • the difference in weight of the two flaps 13 and 19 is dimensioned such that the torque holding them in the closed position by gravity is overcome by the torque acting in the opening direction, which the pressure acting on the flap 13 exerts on a water filling of the first chamber 4 before that Level of filling reaches the overflow 10, but is not overcome when the first chamber 4 is completely filled with oil or petrol, which is also in a layer of relatively small thickness above the lock grate 5, as is the case when oil or Petrol flows on the street.
  • the second flap 19 and its seat 16 form a second valve, but the same is not used as a shut-off device, but rather only to improve or additionally secure the blocking action against oil or gasoline, by the pressure at the bottom 16 of the second chamber 7 being an additional force Closing direction exerts on the outlet valve 12 when the second chamber 7 contains a liquid, which - as described above - is only possible if oil or gasoline, but not if water flows into the first chamber 4.
  • the device can in principle also be carried out without the second chamber 7, the flap 13 of the outlet valve 12 being able to be held in the closed position by a counterweight (or a spring), so that it gives way before the water in the single chamber detects the height of the sluice grate reached (e.g. when the chamber is about half full), but does not give way when the chamber is completely filled with oil or petrol, which is also above the sluice grate 5.
  • the device Since the outlet valve 12 (and likewise - if present - the second flap 19) is closed in the rest position, the device also acts as an odor trap, and since the flap 13 rests on the underside of its seat 14, the device also acts as a check valve, for which purpose the seat opening 16 (if present) is to be dimensioned equal to or better smaller than that of the exhaust valve 12. By making it larger, the effect as a check valve can be prevented if desired (with the check valve 31 being omitted. With these effects of the device, the density of the liquid is not important.
  • the device can also be carried out without the seat 16 if it is ensured in another way that the ground pressure of a liquid which has spilled over the overflow 10 acts only on the upper side of the flap 19, and whose swiveling is sufficiently preserved.
  • a (not shown) balloon or bag made of flexible material lies on the flap 19 and is connected tightly to the opening forming the overflow 10, so that liquid that has spilled over the overflow places a load on the flap 19.
  • the edge of the flap 19 could also be tightly connected to the side walls of the second chamber 7 below the overflow 10 by a bellows (not shown).
  • the balloon, bag or bellows is supported on the side walls of the second chamber 7 when liquid flows into it, it can consist of very flexible, light material, so that it (in an empty state) does not significantly load or prevent the flap 19.
  • the balloon or pouch can be squeezed out or simply replaced after an oil accident. In these two versions, parts 17, 22, 23, 26 and 31 are superfluous.
  • the second chamber 7 can be tapered as desired above its space required for pivoting the flap 19. It is also sufficient if it only has the height required for pivoting the flap 19, and through a tube with the opening of the partition 8 forming the overflow 10 . connected is. In this case, a smaller amount of liquid that has passed over the overflow 10 is sufficient for the locking flap 19 to promote or secure the locking action.

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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)
  • Treatment Of Fiber Materials (AREA)
  • Sewage (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Claims (9)

1. Dispositif de blocage pour liquides, notamment destiné à des bouches d'égouts et comportant une chambre (4) munie en partie haute d'une entrée (5) et, en partie basse, d'une sortie équipée d'un organe d'isolement (12) dont la pièce obturatrice (13) est maintenue en souplesse dans la position de fermeture, afin de céder à la pression de contact d'un liquide, notamment de l'eau, renfermé par la chambre (4), caractérisé par le fait que la pièce obturatrice (13) qui, lors de l'emplissage de la chambre (4) par ce liquide, cède avant que le niveau dudit liquide atteigne l'entrée (5) ou un trop-plein (10) prévu sur ladite chambre (4), demeure en position fermée, lors d'un emplissage par un liquide d'une densité moindre, notamment de l'huile ou de l'essence, lorsque le niveau de ce liquide atteint ou dépasse respectivement l'entrée (5) ou le trop-plein (10).
2. Dispositif selon la revendication 1, dans lequel l'organe d'isolement est une valve (12) à volet obturateur dont le siège (14) se trouve sur le fond (15) de la chambre (4), commodément incliné, et s'étend de préférence à proximité du bord périphérique de ce dernier (15).
3. Dispositif selon la revendication 1 ou 2, muni d'un trop-plein (10) et dans lequel ce trop-plein (10) débouche dans un espace (7) sur la surface de fond (17) duquel est disposé un organe (19) qui est mobile conjointement à la pièce obturatrice (13) de l'organe d'isolement (12) et qui agit sur la pièce obturatrice (13) de cet organe d'isolement (12), dans le sens de la fermeture, lors d'une sollicitation par la pression de contact d'un liquide renfermé par ledit espace (7).
4. Dispositif selon la revendication 3, dans lequel l'espace est formé par une seconde chambre (7) dont le fond (17) est pourvu d' un siège (16) pour un second volet (19) formant l'organe, et les deux volets (13, 19) sont reliés fermement l'un à l'autre peuvent pivoter autour d'un axe commun (20) au moins approximativement horizontal et s'étendant entre leurs sièges (14, 16), et sont maintenus en souplesse, dans la position de fermeture, par le couple de rotation agissant sur lesdits volets (13, 19) par suite de leur pesanteur ou par l'intermédiaire d'une force élastique.
5. Dispositif selon la revendication 4, dans lequel les surfaces de fond (15, 17) des deux chambres (4, 7) sont situées dans des plans s'étendant à l'oblique vers le bas, de part et d'autre de l'axe commun (20) des volets, et chaque orifice d'un siège (14, 16) de volet s'étend quasiment jusqu'au bord du fond (15, respectivement 17) de la chambre.
6. Dispositif selon la revendication 4 ou 5, dans lequel l'orifice du siège (14) de l'organe d'isolement (12) et l'orifice du siège (16) ménagé au fond (17) de la seconde chambre (7) débouchent dans des compartiments (24, 27), reliés l'un à l'autre, au-dessous desdites chambres (4, 7), et la superficie de la face inférieure du volet (13) de l'organe d'isolement (12) est plus grande que l'orifice du siège (16) ménagé au fond (17) de la seconde chambre (7), de telle sorte que les deux volets (13, 19) ne cèdent par à un liquide montant dans les compartiments (24, 27).
7. Dispositif selon la revendication 4 ou 5, dans lequel les deux orifices des sièges (14, 16) débouchent dans des compartiments (24, 27), reliés l'un à l'autre au-dessous des chambres (4, 7), et la superficie de la face inférieure du volet (13) de l'organe d'isolement (12) est nettement plus petite que l'orifice du siège (16) ménagé au fond (17) de la seconde chambre (7), de telle sorte que les deux volets (13, 19) cèdent à un liquide montant dans le compartiment (24, 27).
8. Dispositif selon l'une des revendications 1 à 7, dans lequel la chambre (4), respectivement les première et seconde chambres (4, 7), sont accessibles en vue d'un vidage.
9. Dispositif selon l'une des revendications 1 à 8, réalisé sous la forme d'un caisson incorporé (2) pouvant être introduit dans l'extrémité supérieure du puits d'admission (1) d'une canalisation.
EP87102851A 1986-03-05 1987-02-27 Dispositif de blocage pour liquides Expired - Lifetime EP0235767B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102851T ATE52120T1 (de) 1986-03-05 1987-02-27 Absperreinrichtung fuer fluessigkeiten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH908/86A CH671988A5 (fr) 1986-03-05 1986-03-05
CH908/86 1986-03-05

Publications (3)

Publication Number Publication Date
EP0235767A2 EP0235767A2 (fr) 1987-09-09
EP0235767A3 EP0235767A3 (en) 1987-12-02
EP0235767B1 true EP0235767B1 (fr) 1990-04-18

Family

ID=4197978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102851A Expired - Lifetime EP0235767B1 (fr) 1986-03-05 1987-02-27 Dispositif de blocage pour liquides

Country Status (4)

Country Link
EP (1) EP0235767B1 (fr)
AT (1) ATE52120T1 (fr)
CH (1) CH671988A5 (fr)
DE (1) DE3762359D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311719A1 (de) * 1993-04-08 1994-10-13 Dyckerhoff & Widmann Ag Leichtflüssigkeitsabscheider mit einem selbsttätigen Abschluß
GB2291073A (en) * 1994-07-07 1996-01-17 B & Al Co Pte Limited Drainage trap
CN113566001B (zh) * 2021-08-27 2024-09-03 上海立新液压有限公司 一种补油溢流阀

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1351677A (en) * 1919-01-20 1920-08-31 Henry W Nagel Sewer-trap
DE1941891A1 (de) * 1969-08-18 1971-03-04 Karl Meier Abscheider oder Sperre fuer Fluessigkeiten mit einem spezifischen Gewicht unter dem des Wassers
GB2129027A (en) * 1982-10-26 1984-05-10 Wan Ming Liao Roadside drain inlets

Also Published As

Publication number Publication date
EP0235767A3 (en) 1987-12-02
CH671988A5 (fr) 1989-10-13
DE3762359D1 (de) 1990-05-23
EP0235767A2 (fr) 1987-09-09
ATE52120T1 (de) 1990-05-15

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