EP1154085B1 - Vanne de rinçage à fonctionnement intermittent - Google Patents

Vanne de rinçage à fonctionnement intermittent Download PDF

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Publication number
EP1154085B1
EP1154085B1 EP01110148A EP01110148A EP1154085B1 EP 1154085 B1 EP1154085 B1 EP 1154085B1 EP 01110148 A EP01110148 A EP 01110148A EP 01110148 A EP01110148 A EP 01110148A EP 1154085 B1 EP1154085 B1 EP 1154085B1
Authority
EP
European Patent Office
Prior art keywords
flushing valve
valve according
valve body
membrane
flow control
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
EP01110148A
Other languages
German (de)
English (en)
Other versions
EP1154085A1 (fr
Inventor
Davide Bottan
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.)
ZENIT INVESTMENTS SpA
Original Assignee
ZENIT INVEST SpA
Zenit Investments SpA
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 ZENIT INVEST SpA, Zenit Investments SpA filed Critical ZENIT INVEST SpA
Publication of EP1154085A1 publication Critical patent/EP1154085A1/fr
Application granted granted Critical
Publication of EP1154085B1 publication Critical patent/EP1154085B1/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
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/105—Accessories, e.g. flow regulators or cleaning devices
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
    • E03F9/007—Devices providing a flushing surge

Definitions

  • the present invention relates to a flushing valve.
  • sump pits are placed at preset intervals along the extension of the pipes.
  • flushing valves are used which are immersed in said sump pits and are associated with a conventional submersed pump adapted to send the collected wastewater to the downstream piping, allow to automatically activate a jet of water which is adapted to keep under agitation the overall mass of water collected in the sump pits, thus greatly limiting deposition phenomena.
  • Conventional valves substantially consist of a body inside which there is provided a chamber in which a ball of heavy material, usually a metallic one, is placed by gravity; said ball is adapted to act as a flow control element for a Venturi tube-like forced passage formed in the piping that arrives from the pump and passes through said valve body.
  • said ball is first raised by an elastic membrane which is hermetically coupled on the bottom of the chamber that accommodates it and is gradually inflated by a flow of oil contained in a suitably provided reservoir embedded in the valve body; said oil flow is triggered by the suction generated on the membrane by the Venturi tube-like passage and the lifting of said membrane gradually moves the ball towards the mouth of the forced passage: when the position of the ball is such that it interferes with the flow of water arriving from the pump, it is pushed, as mentioned, so as to block the mouth of said passage.
  • Document EP 0 472 509 Al discloses a flushing valve for a waste water pump station according to the pre-characterizing portion of claim 1.
  • Document WO 99/54565 discloses a device for automatic circulation in waste water tank comprising a mixing valve having a housing that is provided with an inlet connected to a pump station and an outlet at which a seat for settling a floating valve element is defined.
  • the floating valve element is constituted by a ball that floats in a well that is connected to the valve housing.
  • the well is covered with a closure head that is equipped with at least one control conduit, which enables control of gas flow between the well and an outside gas source.
  • the floating valve element is moved down from an open position to a closed position, in which it is settled against the seat, under operation of a liquid level reduction inside the well.
  • the liquid level reduction is performed by means of the gas that is supplied from the outside source to the well in a controlled manner.
  • valves in fact entail fitting on the valve body bellows made of elastomeric material which constitute the oil containment chamber and which, in the long term, also due to their stable placement in an aggressive environment, deteriorate and have to be replaced, wasting time for their recovery from the sump pits, for their indispensable cleaning, for the repair operation and for their subsequent reinstallation.
  • the heavy metal balls can be easily deteriorated by the liquids present in the sump pits and can be damaged by the violent impacts to which they are subjected when the water passage is closed; their consequent fall also damages the membranes with which conventional valves are provided.
  • the aim of the present invention is to eliminate the above-noted drawbacks of the prior art by providing a flushing valve which has a simple structure, is durable, has a low cost and does not have elements made of materials which can deteriorate due to use and permanence in a particularly aggressive environment.
  • 1 designates a flushing valve which comprises a container valve body 2 which is internally hollow, forming a chamber 2b, and is provided with a valve 2c for venting the air that can accumulate therein and is arranged on top of, and connected at its base 2a to, a pipe 3 in which a stream of liquid flows; in this specific case, said liquid is water which arrives from a pumping means which is conventional and therefore not shown and is immersed in a sump pit for collecting the so-called storm sewage or wastewater.
  • the pipe 3 is provided with a choke or throttling 4 which shapes a Venturi tube and is arranged directly downstream of the valve body 2.
  • Said valve body has, in its inner upper portion, a first membrane 5 adapted to push on a flow control element 6 which controls said choke 4 and floats in the hollow body 2; the first membrane 5 is connected to at least one reservoir 7 for containing incompressible liquid, usually oil, which is connected to the internal chamber 2b of the valve body 2.
  • the flow control element 6 is composed of at least two bodies 8 and 9, both of which are preferably spherical, and which are interconnected by means of a wing 10: the first body 8 floats and the second body 9 acts as ballast and closes the Venturi tube-like choke 4; the diameters of the spherical bodies 8 and 9 are different one from the other and the diameter of the first body 8 is larger than the diameter of the second body 9.
  • the valve body 2 is connected to the pipe 3 by interposing a connecting first duct 3a having a calibrated diameter which is comprised between the diameters of the first spherical body 8 and of the second spherical body 9, so as to allow the passage only of the first spherical body 8 and retain the second body 9.
  • the reservoir 7 is connected to the internal chamber 2b of the valve body 2 by means of a corresponding second duct (not shown in the drawings) leading into an upper region for contact between the first membrane 5 and the top of the internal chamber 2b and whose cross-section passage is adjustable by way of corresponding throttling means 11 being substantially constituted by a cylindrical selector 12 which is mounted so as to rotate transversely and hermetically in said cross-section passage and has through holes having predefined diameters; the rotation of said selector aligns with said cross-section a hole having a selectable diameter.
  • the reservoir 7 is arranged externally with respect to the chamber 2b of the valve body 2; moreover, said reservoir 7 and the top of the chamber 2b of the valve body 2 are formed contiguously in an element 13 for the upper closure of said body.
  • the reservoir 7 is composed of a hemispherical cavity 7a which is formed in the upper closure element 13 and is closed hermetically in a downward region by means of a second elastically deformable membrane 14.
  • Both said first membrane 5 and said second membrane 14 are shaped like a spherical dome and in an alternative embodiment of the invention can also be formed as a single monolithic body.
  • At least the first membrane 5 has, on the face directed towards the flow control element 6, a tooth 15 for contact with the first floating spherical body 8.
  • the operation of the invention is as follows: in the initial condition, the submersion of the flushing valve 1 causes the inflow, into the chamber 2b of the valve body 2, of the liquid present in the sump pit, with automatic venting of the air that is present through the corresponding valve 2c and the consequent floating of the flow control element 6, thus making the passage through pipe 3 and choke 4 fully open.
  • the choke 4 being in practice a Venturi tube, produces a suction which diffuses inside said chamber 2b, drawing the first membrane 5 downward.
  • the second spherical body 9 When the second spherical body 9 has reached such a submersion level that it is influenced by the suction generated by the choke 4, it is drawn towards it until it arranges itself in front of it and closes it, interrupting the flow of water arriving from the pump and directed towards the sump pit.
  • the pressure created accordingly in the chamber 2b also acts on the membrane 5, which gradually returns the oil to the reservoir 7 until said membrane 5 is allowed to regain its initial position.
  • the spherical bodies 8 and 9 also tend to rise, being drawn by the flotation of the first body 8, up to the initial position.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Polarising Elements (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Fluid-Driven Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Reciprocating Pumps (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • External Artificial Organs (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (14)

  1. Vanne de rinçage, comprenant un organe de régulation du débit (6) et un corps de vanne formant récipient (2) qui est intérieurement creux et muni d'une valve d'évent (2c) et connecté à sa base (2a) à un tube (3) en étant disposé, en état d'utilisation, au-dessus de ce tube (3) destiné au passage d'un écoulement de liquide provenant d'un moyen de pompage, ledit tube (3) étant muni d'un étrangleur Venturi tubulaire (4) situé directement en amont dudit corps de vanne (2), lequel corps de vanne (2) présente, dans sa partie intérieure supérieure, une première membrane (5) destinée à pousser ledit organe de régulation du débit (6) pour obturer ledit étrangleur (4), ledit organe de régulation du débit (6) flottant normalement dans ledit corps creux (2), ladite première membrane (5) étant connectée à au moins un réservoir (7) destiné à contenir du liquide incompressible et connecté à la cavité interne (2b) dudit corps de vanne intérieurement creux (2), caractérisée en ce que ledit organe de régulation du débit (6) se compose d'au moins une paire de corps (8, 9) qui sont interconnectés au moyen d'une aile (10), un premier corps (8) agissant comme flotteur et un second corps (9) étant sphérique et agissant en tant que lest et obturation pour ledit étrangleur Venturi tubulaire (4).
  2. Vanne de rinçage selon la revendication 1, caractérisée en ce que ledit premier corps flottant (8) est de forme sphérique.
  3. Vanne de rinçage selon la revendication 2, caractérisée en ce que les diamètres desdits corps sphériques (8, 9) sont différents l'un de l'autre, le diamètre dudit premier corps (8) étant plus grand que le diamètre dudit second corps (9).
  4. Vanne de rinçage selon l'une des revendications précédentes, caractérisée en ce que ledit corps de vanne (2) est connecté audit tube (3) par interposition d'un premier conduit de connexion (3a) ayant un diamètre calibré.
  5. Vanne de rinçage selon la revendication 4, caractérisée en ce que le diamètre dudit premier conduit de connexion (3a) est compris entre les diamètres desdits premier (8) et second (9) corps sphériques de l'organe de régulation du débit (6).
  6. Vanne de rinçage selon la revendication 1, caractérisée en ce que ledit réservoir (7) est connecté à ladite cavité interne (2b) dudit corps de vanne (2) au moyen d'un second conduit correspondant qui mène à une zone supérieure de contact entre ladite première membrane (5) et le haut de ladite cavité interne (2b) du corps de vanne (2).
  7. Vanne de rinçage selon la revendication 6, caractérisée en ce que le passage en section transversale dudit second conduit peut être ajusté grâce à un moyen d'étranglement (11).
  8. Vanne de rinçage selon la revendication 7, caractérisée en ce que ledit moyen (11) d'étranglement du passage en section transversale dudit second conduit est constitué par un sélecteur cylindrique (12) qui est monté de manière à être rotatif transversalement et hermétiquement dans ledit passage en section transversale et est muni de trous traversants ayant des diamètres prédéfinis, la rotation dudit sélecteur (12) alignant avec le passage en section transversale un trou ayant un diamètre sélectionnable.
  9. Vanne de rinçage selon la revendication 1, caractérisée en ce que ledit réservoir (7) est agencé de manière externe par rapport à ladite cavité (2b) du corps de vanne (2).
  10. Vanne de rinçage selon les revendications 6 et 9, caractérisée en ce que ledit réservoir (7) et le haut de la cavité (2b) du corps de vanne (2) sont formés de manière contiguë dans un organe (13) assurant la fermeture supérieure dudit corps de vanne (2).
  11. Vanne de rinçage selon la revendication 10, caractérisée en ce que ledit réservoir (7) se compose d'une cavité hémisphérique (7a) qui est formée dans ledit organe de fermeture supérieure (13) et est hermétiquement fermée dans une zone basse avec une seconde membrane élastiquement déformable (14).
  12. Vanne de rinçage selon la revendication 11, caractérisée en ce que lesdites première (5) et seconde (14) membranes ont la forme de dômes sphériques,
  13. Vanne de rinçage selon la revendication 12, caractérisée en ce qu'au moins ladite première membrane (5) présente, sur sa face dirigée vers ledit organe de régulation du débit (6), une dent (15) destinée à venir en contact avec ledit premier corps sphérique flottant (8).
  14. Vanne de rinçage selon la revendication 13, caractérisée en ce que lesdites première (5) et seconde (14) membranes sont formées en un corps monolithique simple.
EP01110148A 2000-05-12 2001-05-04 Vanne de rinçage à fonctionnement intermittent Expired - Lifetime EP1154085B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000MO000098A IT1314629B1 (it) 2000-05-12 2000-05-12 Valvola di flussaggio
ITMO000098 2000-05-12

Publications (2)

Publication Number Publication Date
EP1154085A1 EP1154085A1 (fr) 2001-11-14
EP1154085B1 true EP1154085B1 (fr) 2006-07-26

Family

ID=11450464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01110148A Expired - Lifetime EP1154085B1 (fr) 2000-05-12 2001-05-04 Vanne de rinçage à fonctionnement intermittent

Country Status (5)

Country Link
EP (1) EP1154085B1 (fr)
AT (1) ATE334266T1 (fr)
DE (1) DE60121660T2 (fr)
ES (1) ES2267623T3 (fr)
IT (1) IT1314629B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3309311B1 (fr) * 2016-10-17 2019-12-04 Xylem Europe GmbH Vanne de vidange et station de pompage comprenant une telle vanne
CN108167454A (zh) * 2017-12-28 2018-06-15 舒朋士泵业常州有限公司 一种混流式冲洗阀
CN108843830B (zh) * 2018-08-30 2024-05-10 华南泵业(赣州)有限公司 自动反冲洗阀及方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE461993B (sv) * 1988-09-13 1990-04-23 Flygt Ab Anordning foer att aastadkomma aatercirkulation i avloppsvattenpumpstationer
SE463218B (sv) * 1989-02-21 1990-10-22 Flygt Ab Saett och anordning foer aastadkommande av aatercirkulation i avloppsvattenpumpstationer
SE469844B (sv) * 1992-09-24 1993-09-27 Flygt Ab Itt Anordning för att åstadkomma cirkulation i pumpstationer
SE501192C2 (sv) * 1993-04-29 1994-12-05 Flygt Ab Itt Sätt och anordning att styra en ventil för att åstadkomma återcirkulation i avloppsvattenpumpstationer
DE19754751C1 (de) * 1997-12-10 1999-03-18 Klein Schanzlin & Becker Ag Thermostatisch bewegbares Spülventil
PL326007A1 (en) * 1998-04-22 1999-10-25 Miroslaw Szuster Method of and apparatus for producing automatic ciculation in a waste water holding chamber

Also Published As

Publication number Publication date
ITMO20000098A0 (it) 2000-05-12
EP1154085A1 (fr) 2001-11-14
DE60121660D1 (de) 2006-09-07
ATE334266T1 (de) 2006-08-15
IT1314629B1 (it) 2002-12-20
DE60121660T2 (de) 2007-07-26
ES2267623T3 (es) 2007-03-16
ITMO20000098A1 (it) 2001-11-12

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