EP0659947A2 - Dispositif de commande pour une vanne d'obturation actionnée par dépression - Google Patents

Dispositif de commande pour une vanne d'obturation actionnée par dépression Download PDF

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Publication number
EP0659947A2
EP0659947A2 EP94119697A EP94119697A EP0659947A2 EP 0659947 A2 EP0659947 A2 EP 0659947A2 EP 94119697 A EP94119697 A EP 94119697A EP 94119697 A EP94119697 A EP 94119697A EP 0659947 A2 EP0659947 A2 EP 0659947A2
Authority
EP
European Patent Office
Prior art keywords
valve
main piston
chamber
control arrangement
piston
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.)
Granted
Application number
EP94119697A
Other languages
German (de)
English (en)
Other versions
EP0659947A3 (fr
EP0659947B1 (fr
Inventor
Peter Martens
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.)
Roediger Vacuum GmbH
Original Assignee
Roediger Anlagenbau 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 Roediger Anlagenbau GmbH filed Critical Roediger Anlagenbau GmbH
Publication of EP0659947A2 publication Critical patent/EP0659947A2/fr
Publication of EP0659947A3 publication Critical patent/EP0659947A3/fr
Application granted granted Critical
Publication of EP0659947B1 publication Critical patent/EP0659947B1/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
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S137/00—Fluid handling
    • Y10S137/907—Vacuum-actuated valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2931—Diverse fluid containing pressure systems
    • Y10T137/3109—Liquid filling by evacuating container
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86389—Programmer or timer

Definitions

  • the invention relates to a control arrangement for a shut-off valve which can be actuated by a vacuum and is intended for a vacuum sewage system, comprising a first valve which can be actuated by a back pressure caused by accumulated water and which closes or opens a connection which leads to a vacuum, and a chamber which can be adjusted via the first valve , in or adjacent to which a main piston, preferably loaded by a spring, is displaceably arranged, by means of which a vacuum connection to at least the shut-off valve can be controlled depending on the pressure prevailing in the chamber, at least one which is independent of the main piston, but preferably with the latter Via a driver, a second valve that can be positively coupled is provided, via which the shut-off valve can be subjected to negative pressure.
  • a corresponding vacuum sewer system comprises as essential components house connection shafts with a currentless control arrangement and shut-off or suction valves, a subsequent pipe system with systematically arranged high and low points as well as a vacuum station with waste water collection tanks, waste water pumps, vacuum pumps, measurement and control technology .
  • the water first flows out of buildings via standard free fall house connection lines to a e.g. on a plot of land located in the exclusively pneumatically controlled shut-off valves and the associated control arrangement.
  • shut-off valve Due to the mechanism present in the control arrangement, the shut-off valve is opened when the back pressure is present and the waste water is sucked off into the vacuum line.
  • the valve closes depending on the time after a few seconds via spring force and vacuum.
  • the wastewater itself collects at the lowest points in the piping system and is gradually pushed by the air flowing in over the following high points towards the vacuum station.
  • the wastewater is then conveyed from the collecting tank of the vacuum station to the wastewater treatment plant using conventional wastewater pumps via a pressure or free fall line.
  • the control arrangement assigned to the shut-off valve should allow automatic adaptation to the wastewater portions to be extracted and to the operating conditions in the drainage system.
  • Another disadvantage is that the second valve, which releases the negative pressure to the shut-off valve, can be opened at a low negative pressure, which, however, is not sufficient for suction. This increases the risk that wastewater can be lifted into the frost area of the line and freeze out there.
  • a control arrangement of the type mentioned at the outset can be found in DE 37 27 661 A1.
  • time control acts via volume change and not via pressure change, at least one control valve and possibly a minimum vacuum valve necessary. Due to the complex mechanical structure, in particular of the time control device, which includes, among other things, a diaphragm piston with a hollow pin, which is guided in a guide bush, and a bracket, which in turn acts on a pivotable actuating lever in order to open or close the weight-loaded control valve, is not always ensures that the control arrangement operates with the required reliability.
  • the known control arrangement can be used to actuate either a control valve or a second control valve arranged downstream thereof, which together control a single shut-off valve.
  • the present invention is based on the problem of developing a control arrangement of the type described at the outset in such a way that a high level of operational safety is ensured with a compact and structurally simple construction, a vacuum connection not only being controllable via the main piston to a shut-off valve.
  • a vacuum connection not only being controllable via the main piston to a shut-off valve.
  • at least two valves preferably one for waste water and one for air, can be actuated, that these are acted upon simultaneously, overlapping in time or one after the other, with the vacuum required for actuation.
  • control arrangement comprises a third valve which controls a connection to a further shut-off valve or an air supplying air into the vacuum sewage system and which can be positively coupled to the main piston.
  • the control arrangement according to the invention can be used universally, that is to say that depending on the further valves actuated by the main pistons, a desired use can take place.
  • the control arrangement basically has at least two further valves which can control various other valves, for example shut-off valves for waste water and aeration valves, independently of one another.
  • the second and third valves are independent of one another, but are connected in parallel.
  • a further (fourth) valve emanates from the main piston and, depending on the position of the main piston, closes or releases the connection leading to the vacuum chamber.
  • the further valve closes the chamber from the connection when the main piston has been displaced in the chamber by increased vacuum, in particular when an underpressure in the chamber has caused the main piston to be displaced in the direction of the first valve.
  • the further valve releases the connection again when the main piston has moved back to the basic position, that is, when there is pressure compensation in the chamber with the surroundings.
  • the further (fourth) valve is preferably quasi telescopically displaceable to the main piston, the further valve with its piston being arranged in the main piston.
  • the second and third valves have second and third valve pistons running parallel to one another and parallel to the main piston, which preferably have lengths that differ from one another or are adjustable in length.
  • the main piston then acts on the second or third valve piston via at least one driver such that when the main piston returns to its basic position from its position displaced by the vacuum acting in the chamber, depending on the lengths of the second and third valve pistons or depending on the positions of elements emanating from the second or third valve pistons and interacting with the driver, the second or third valve is opened to direct the required vacuum to the suction or ventilation valve.
  • the second and third valves close again when, when the main piston slides back, its driver comes out of engagement with the second and third valve pistons, respectively.
  • the element emanating from the respective second or third valve piston is preferably an element on the end of the valve piston and at least peripherally flexible, such as a disk element, to which recesses or projections in the driver of the main piston are assigned.
  • a forced coupling via tension or spring elements can also take place between the main piston and the second or third valve piston in order to achieve the same effect .
  • the positive coupling between the main piston and the second and third valve pistons takes place in such a way that the second and third valves are opened or closed at different times.
  • the compact structure of the control arrangement results in particular from the fact that it comprises a cylindrical housing, along the central axis of which the first valve with its valve piston, the main piston and the further valve piston which can be moved coaxially to the main piston are arranged such that the main piston is known from a membrane is held in a pressure-tight manner, which closes the chamber which can be subjected to negative pressure on a side which is preferably opposite the first valve, and that at least, for example, radially on the main piston or the fourth valve a limiter acts in such a way that a displacement of the main piston with increasing vacuum or closing of the fourth valve takes place only at a predetermined vacuum in the chamber.
  • the limiter can be designed as spring-loaded spherical elements which act radially on the main piston or piston of the fourth valve and which can be snapped into at least one preferably circumferential recess such as a groove when the main piston is in or near it at ambient pressure in the chamber assumed position.
  • a limiter acts on the piston of the fourth valve, a defined opening and closing of the connection to the chamber at clearly defined pressures in the chamber and thus an exact time control is possible.
  • control arrangement responds only when there is a vacuum in the vacuum sewage system which is sufficient to pump the sewage to the required extent and in the required amount.
  • the limiter can also be designed as a magnet in order to act in the sense shown above.
  • connection which can be closed by the first valve or the further (fourth) valve and via which the negative pressure is conducted to the chamber is also preferably designed as a line running in a wall of the housing.
  • the figures show the structure and function of a control arrangement (10) according to the invention, by means of which both a shut-off valve which can be actuated by vacuum and a ventilation valve can be controlled for a vacuum sewage system.
  • the currentless, but pneumatically operating control arrangement (10) comprises a cylindrical housing (12), in which a first valve (14) or release valve is arranged, which is connected via a membrane (16) from an opening (18) into the housing ( 12) coming back pressure can be acted upon.
  • the trigger valve (14) extends with its valve piston (20) along the longitudinal axis of the housing (12).
  • a main piston (22) can also be displaced along the longitudinal axis and can be displaced with a larger section (26) which can be acted upon by a helical spring (24) in a chamber (28) which functions as a timer.
  • the chamber (28) is sealed on the side opposite the release valve (14) by a membrane (30) which is connected to the main piston (22).
  • the spiral spring (24) extends between a flange-like section (32) of the main piston (22) and an intermediate wall (34) of the housing (12), which has a central opening (37) that runs concentrically to the longitudinal axis of the housing (12), which can be closed on the one hand via a valve plate (36) of the valve piston (20) of the release valve (14) with respect to a line (38) which can be subjected to negative pressure and runs within the housing wall, and on the other hand via a valve plate (40) of a closure valve (42), the piston of which (44) is displaceable coaxially with the main piston (26) and is guided by the latter.
  • the valve piston (44) of the closure valve (42) and the main piston (22) form a kind of telescopic linkage.
  • the section (46) is guided within a bore (48) of a further intermediate wall (50) of the housing (12).
  • a limiter (52) acts in the form of spherical elements (54) on the piston section (46), which act radially evenly over the circumference of the section (46).
  • the force acting on the section (46) via the balls (54) can be adjusted via spring elements (56), which in turn can be preloaded via adjusting elements (58) which are accessible from the outside.
  • Three spherical elements are preferably arranged distributed uniformly over the circumference of the section (46).
  • the function of the limiter (52) occurs when the balls (54) are engaged in a circumferential groove (60) in the section (46). This is the case when the main piston (22) is in a first, lower end position. Only when there is a sufficiently strong negative pressure in the chamber (28) can the main piston (22) be shifted upwards in the exemplary embodiment.
  • the piston section (46) of the main piston (22) extends in a lower chamber (62) of the housing (12) of the control arrangement (10) and has a radially extending disk element (64) with openings (66) and (68 ) on.
  • the switching valves (70) and (72) there are also two switching valves (70) and (72) parallel to the longitudinal axis of the housing (12) and thus to the main piston (22) and the valve pistons (20) and (44) of the release valve (14). or the closure valve (42) slidably arranged.
  • the switching valves (70) and (72) establish a connection to a line (74) to which vacuum can be applied, as well as connections (76) and (78).
  • the connections (76), (78) are connected to valves which can be actuated by vacuum, preferably in the form of a suction valve (connection 76) or a ventilation valve (connection 78) of a vacuum sewage system, in order to convey waste water with the amount of air required for transport.
  • the switching valves (70) and (72) have valve pistons (80) and (82) which have disc-shaped elements (84) and (86) at their ends extending in the chamber (72), which are at least peripherally elastic.
  • the extent of the elements (84), (86) is adapted to the openings (66) and (68) of the driver (64) of the main piston (22) such that the elements (84), (86) on the one hand the openings ( 66) and (68) with the switching valves (70) and (72) fully closed or fully open, but then caught and carried by the driver (64) when the main piston (22) moves in the manner described below from a second one 3 moved into its first end position shown in FIG. 1.
  • Fig. 1 the control arrangement according to the invention is shown in a position in which the main piston (22) is in its lower (first) end position. Furthermore, a back pressure is not present on the membrane (16) via the opening (18).
  • both the release valve (20) and the switching valves (70) and (72) are closed.
  • chamber (28) prevails the connections (76) and (78) to the suction valve and ventilation valve, respectively, so that the latter are closed; because on the one hand the lower chamber (62) of the housing (12) is connected to the environment via an opening (94) and on the other hand the valve pistons (80) and (82) of the switching valves (70) and (72) penetrate the guides in them the intermediate wall (50) with play.
  • the valve pistons (80) and (82) each have an unspecified slot, the length of which is such that when the valves (70) and (72) are closed, a connection between the chamber (62) to the connections (76) and (78) is produced.
  • shut-off valve (42) can move to the main piston (22), the shut-off valve (42) continues to close the opening (37) because it is kept in the closed position by the vacuum present via the line (38).
  • the plate-shaped elements (84) and (86) of the switching valves (70) and (72) enforce the openings (66) and (68) of the Driver (64) without the switching valves (70) and (72) experiencing a change in position.
  • valve piston (82) of the switching valve (72), via which the ventilation valve is controlled, is longer than the valve piston (80) of the switching valve (70), the switching valve (72) initially remains closed even when the switching valve (70) is open. Only wastewater is extracted.
  • valve pistons (80) and (82) of the switching valves (70) and (72) shown in the figures can be opened at the same time, so that there may be an overlap of waste water and air delivery.
  • a chronological succession can also be achieved.
  • the disk-shaped element (84) of the switching valve (70) then jumps over the driver (64) when the main piston (22) is moved further towards its first end position when the switching valve (70) is in its lower end position .
  • the switching valve (70) is closed, so that pressure compensation can take place via the connection (76) to the suction valve via the chamber (62) and the slot in the valve piston (80), so that the suction valve is closed.
  • the switching valve (72) which controls the ventilation valve is still open. Only when the main piston (22) is displaced further in the direction of its first end position (FIG. 7), does the disc-shaped element (86) also jump over the driver (64), i.e. pass through its opening (68), so that the switching valve (72 ) is closed. There is therefore no further vacuum at connection (78). At the same time, pressure is equalized via the chamber (62) and the slot in the piston rod (82). However, it should be mentioned that a slot does not necessarily have to be present, since the piston rod (82) is guided with play.
  • closure valve (42) Shortly before the main piston (22) is in its first (lower in the drawing) end position, the closure valve (42) is torn from the opening (37) and can be gravitationally forced into a cylindrical opening (96) of the valve piston (44) Section (26) of the main piston (22) fall back (Fig. 8).
  • switching valves (70), (72) are assigned to the main piston (22) in the exemplary embodiment, there is of course the possibility of actuating a switching valve or more than two switching valves via the main piston (22). If there are several switching valves, they can each control one suction valve.
  • FIGS. 9 is a variant of the control arrangement shown in FIGS. 1 to 8, to the extent that not on the main piston (22) or its section (46), but on the valve piston (44) of the closure valve (42) a limiter acts. This should ensure a clear open / close position of the closure valve (42).
  • the valve piston (44) has two mutually spaced grooves (60) into which ball elements (54) engage when the closure valve (42) is in its open or closed position. Radial forces act on the valve piston (44) via the ball elements (54), which are caused by the fact that the ball elements (54) are surrounded on the circumference by a clamping ring (98). In order to prevent the ball elements (54) and the clamping ring (58) from slipping, they are arranged in a circumferential recess in the intermediate wall (34) or in a section extending from the latter, in which the valve seat for the valve plate (40) of the closure valve (42 ) runs.
  • the design of the limiter (54), which can be seen in FIG. 9, ensures that the chamber (28) is clearly opened and closed, and thus its timer function.
  • the limiters according to FIGS. 1 and 9 can of course also be provided in parallel. Other technically equivalent limiters can also be used.

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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)
  • Fluid-Driven Valves (AREA)
  • Multiple-Way Valves (AREA)
EP94119697A 1993-12-21 1994-12-14 Dispositif de commande pour une vanne d'obturation actionnée par dépression Expired - Lifetime EP0659947B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4343733 1993-12-21
DE4343733A DE4343733A1 (de) 1993-12-21 1993-12-21 Steueranordnung für ein durch Unterdruck betätigbares Absperrventil

Publications (3)

Publication Number Publication Date
EP0659947A2 true EP0659947A2 (fr) 1995-06-28
EP0659947A3 EP0659947A3 (fr) 1996-07-31
EP0659947B1 EP0659947B1 (fr) 2000-06-28

Family

ID=6505704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119697A Expired - Lifetime EP0659947B1 (fr) 1993-12-21 1994-12-14 Dispositif de commande pour une vanne d'obturation actionnée par dépression

Country Status (4)

Country Link
US (1) US5634494A (fr)
EP (1) EP0659947B1 (fr)
JP (1) JPH07253175A (fr)
DE (2) DE4343733A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006079688A1 (fr) * 2005-01-25 2006-08-03 Evac International Oy Systeme de traitement sous vide des eaux usees
EP3620636A1 (fr) * 2018-09-06 2020-03-11 MAN Truck & Bus SE Dispositif d'arrêt et soupape doté d'un dispositif d'arrêt

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6024120A (en) * 1998-09-25 2000-02-15 Sherwood Services Ag Pressure relief valve with moving diaphragm
DE10216091C1 (de) * 2002-04-11 2003-08-14 Roediger Vakuum & Haustechnik Überwachungsanordnung
US6770062B2 (en) * 2002-08-07 2004-08-03 Trinh D. Phung Automatic high negative pressure relief valve and chest drainage units using same
US7380568B2 (en) * 2005-03-28 2008-06-03 John Tiwet Water flow controller
US7717856B2 (en) * 2005-05-02 2010-05-18 Qdevice Medical Inc. Non-toxic liquid column sphygmomanometer
US7686785B2 (en) * 2006-07-13 2010-03-30 Boehringer Laboratories, Incorporated Medical suction control with isolation characteristics
DE102010000609B4 (de) * 2010-03-02 2015-03-12 Roediger Vacuum Gmbh Steueranordnung
US10001787B2 (en) 2014-06-02 2018-06-19 Aqseptence Group, Inc. Controller for vacuum sewage system
KR102062477B1 (ko) * 2015-12-24 2020-01-03 히다치 오토모티브 시스템즈 가부시키가이샤 압축기
US10288189B2 (en) * 2017-09-07 2019-05-14 Acorn Engineering Company Pneumatic controller
CN110081210B (zh) * 2019-04-30 2023-12-08 浙江师范大学 一种气液混输负压磁力气控复合阀及其控制方法
CN115289229B (zh) * 2022-08-11 2024-12-10 二重（德阳）重型装备有限公司 一种常闭式密封结构、真空隔离舱门、真空管道连通方法

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE3727661A1 (de) 1987-08-19 1989-03-02 Harald Michael Pneumatische steuervorrichtung fuer ein absperrventil an einer unterdruck-abwasserleitung

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US3538517A (en) * 1968-10-07 1970-11-10 Koehler Dayton Pneumatic flushing system for self-contained sewage system
JPS531416B2 (fr) * 1974-09-09 1978-01-19
US4373838A (en) * 1981-02-13 1983-02-15 Burton Mechanical Contractors Inc. Vacuum sewage transport system
JPH0388621A (ja) * 1989-08-31 1991-04-15 Ebara Corp 真空式汚水収集装置及び該装置用真空弁コントローラ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3727661A1 (de) 1987-08-19 1989-03-02 Harald Michael Pneumatische steuervorrichtung fuer ein absperrventil an einer unterdruck-abwasserleitung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006079688A1 (fr) * 2005-01-25 2006-08-03 Evac International Oy Systeme de traitement sous vide des eaux usees
JP2008528827A (ja) * 2005-01-25 2008-07-31 エバク インターナショナル オサケ ユキチュア 真空下水道システム
CN100572703C (zh) * 2005-01-25 2009-12-23 埃瓦克国际有限公司 真空排污系统
AU2006208755B2 (en) * 2005-01-25 2010-09-09 Evac Oy Vacuum sewer system
US7845028B2 (en) 2005-01-25 2010-12-07 Evac International Oy Vacuum sewer system
NO339193B1 (no) * 2005-01-25 2016-11-14 Evac Oy Vakuumavløpssystem
EP3620636A1 (fr) * 2018-09-06 2020-03-11 MAN Truck & Bus SE Dispositif d'arrêt et soupape doté d'un dispositif d'arrêt

Also Published As

Publication number Publication date
EP0659947A3 (fr) 1996-07-31
US5634494A (en) 1997-06-03
DE59409410D1 (de) 2000-08-03
JPH07253175A (ja) 1995-10-03
EP0659947B1 (fr) 2000-06-28
DE4343733A1 (de) 1995-06-22

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