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EP0675987A1 - Dispositif d'aspiration - Google Patents

Dispositif d'aspiration

Info

Publication number
EP0675987A1
EP0675987A1 EP94931539A EP94931539A EP0675987A1 EP 0675987 A1 EP0675987 A1 EP 0675987A1 EP 94931539 A EP94931539 A EP 94931539A EP 94931539 A EP94931539 A EP 94931539A EP 0675987 A1 EP0675987 A1 EP 0675987A1
Authority
EP
European Patent Office
Prior art keywords
valve
shut
suction device
receptacle
negative pressure
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
EP94931539A
Other languages
German (de)
English (en)
Other versions
EP0675987B1 (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 EP0675987A1 publication Critical patent/EP0675987A1/fr
Application granted granted Critical
Publication of EP0675987B1 publication Critical patent/EP0675987B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D35/00—Sanitation
    • B61D35/002—Washing facilities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B29/00—Accommodation for crew or passengers not otherwise provided for
    • B63B29/16—Soil water discharges
    • 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

Definitions

  • the invention relates to a suction device for suctioning liquid from a ventilated receptacle, in particular waste water container of a water, rail or aircraft, by means of the negative pressure directed to the receptacle that can be coupled to the receptacle, comprising an externally and manually operable regulator nerve til, a device-side shut-off valve, such as a diaphragm valve, which connects or releases the vacuum that is required for suction and is connected with this, and optionally a receiving-side shut-off valve that is arranged on the receiving side and can be actuated by the negative pressure.
  • a device-side shut-off valve such as a diaphragm valve
  • the control valves have self-holding devices in order to be able to apply negative pressure to the actuating cylinders of the shut-off valves via valve chambers and to open the valves.
  • the present invention is based on the problem of developing a suction device of the type described above in such a way that universal use is possible, that is to say that suction of liquid from receptacles such as containers can be carried out without any problems, regardless of whether a shut-off valve which can be actuated by means of vacuum is present on the receiving side or Not.
  • the suction device should be able to determine whether a shut-off valve is present on the intake side or not.
  • the suction device has pushbuttons, of which a (first) pushbutton element can be actuated when the suction device is coupled to the receptacle, regardless of whether a stop-side shut-off valve is present, and a (second)
  • the pushbutton element can be actuated only in the presence of a shut-off valve on the receiving side, so that the first pushbutton element is operatively connected to a first valve arranged in a first line to which the negative pressure can be applied, so that when the suction device is coupled to the receptacle, the negative pressure via the first valve on the one hand to Regulator valve arrives and can be shut off via this and, on the other hand, can be actuated by the second sensing element via a shut-off valve provided on the receiving side
  • Another (second) valve arrives at the device-side shut-off valve, wherein if there is no receiving-side shut-off valve, the second valve blocks the first line coming from the first valve due to a lack
  • buttons are preferably styli, at least a first of which is actuated when the device is coupled.
  • the second stylus or styli are only activated and axially displaced if a shut-off valve is provided on the receiving side.
  • a device-side seal that could be squeezed when coupled would be used for. B. on a flange of the intake-side shut-off valve, whereby at the same time the shut-off valve in the receptacle is acted upon by a vacuum via a bypass line running parallel to the vacuum channel in the suction device in order to open it, provided that a bypass valve present in the bypass line is above the regulator valve is opened.
  • shut-off valve on the device side regardless of the position of the regulator valve, is subjected to negative pressure in order to open the former.
  • This negative pressure which is conducted via the regulator valve, also opens the shut-off valve on the device side if the button or buttons do not detect a shut-off valve on the receiving side. Otherwise, the lines in which the valves are arranged, which are switched by the buttons actuated by the coupling, would be fed directly to the shut-off valve without this having to be passed through the regulator valve.
  • the suction device designed according to the invention ensures that the control line, in particular the bypass line, cannot be contaminated.
  • the bypass line which merges into a control line for the shut-off valve on the receiving side within the end seal is via an axially displaceable rod-shaped Locked off.
  • the bypass line even if no negative pressure is passed to the shut-off valve via the bypass line, is subjected to negative pressure so that automatic cleaning takes place.
  • shut-off valve closes when the liquid is sucked out of the receptacle and thus air is conveyed without pressure equalization via the lines leading to the shut-off valve, as a result of which contamination could otherwise occur
  • the invention that the shut-off valve has a check valve in its control line acted upon by vacuum.
  • the valve chamber of the shut-off valve from a nozzle-like opening and communicating with the environment, the cross section of which determines the shutter speed of the shut-off valve and thus the suction time. The latter also ensures that when the suction device is pulled off, the residual liquid available for taking up is sucked away, so that it is ensured in this way that contamination is largely excluded.
  • the suction device regardless of whether there is a receiving-side shut-off valve on the receiving side, has a single device-side regulator valve, that when the suction-side suction device is coupled to the receiving device, the device-side shut-off valve is independent of the position of the single regulator valve and the intake-side shut-off valve can be acted upon by a vacuum when the control valve is actuated, and that in the absence of an intake-side shut-off valve the device-side shut-off valve can be subjected to an underpressure when the control valve is actuated.
  • the regulator valve comprises a valve piston which is axially displaceable in a valve housing and has a valve head, which is connected to the actuating element which can be actuated and which is spring-biased and supported against the housing in such a way that the valve head is supported in one of one Vacuum connection outgoing valve chamber arranged adjustable and can be applied sealingly to a channel running axially to the valve piston, such as an annular channel, which in turn opens into an intermediate space between the housing and the actuating element, which via a connection running in the housing connects to at least one further valve such as the bypass valve or the device-side shut-off valve leading connection is connected, and that a seal is arranged between the housing and the actuating element, via which the intermediate space can be sealed when the actuating element is displaced towards the housing against the spring preload and the valve seat is spaced from the channel.
  • the actuating element has a peripheral edge which extends at least in sections along the circumference along the valve housing and at a distance from it to form a gap which connects to the atmosphere in the valve head which closes between the valve housing chamber and the intermediate space is.
  • FIG. 1 is a schematic diagram of a suction device for suctioning waste water present in a receptacle by means of negative pressure
  • FIG. 2 the suction device of FIG. 1, coupled to a receptacle
  • FIG. 3 shows the suction device according to FIG. 2 after actuation of a regulator valve
  • 4 shows the suction device according to FIG. 1, but coupled to a receptacle without a shut-off valve and
  • FIG. 5 the suction device according to Fig. 4 after actuated regulator valve.
  • a suction device that can be coupled to a receptacle (not shown) such as a waste water collection container is shown, wherein a design can be selected with regard to the coupling mechanism, which, for example, is known from the suction gun offered by Roediger Anlagenbau GmbH, Hanau, under the name Roevac suction gun.
  • the suction device or suction pistol (10) has a vacuum channel (12) which merges on the outside into a tubular section (14), which can be referred to as a trunk and which projects into the container to be emptied or a connecting piece emanating from it when the pistol (10) is coupled .
  • a tubular section (14) which can be referred to as a trunk and which projects into the container to be emptied or a connecting piece emanating from it when the pistol (10) is coupled .
  • a seal (16) which bears against this in the presence of a container-side shut-off valve and is compressed to a certain extent when the device (10) is coupled.
  • buttons (18) which are then axially displaced when a shut-off valve is found on the receiving side.
  • a control bore (20) in which an axially displaceable closure piece (22) is displaceably arranged.
  • the control bore (20) preferably opens into an annular groove on the shut-off valve side, from which in turn a control bore or line leads to the shut-off valve on the container side in order to be able to open it in a known manner by applying negative pressure.
  • a flange plate (19) is also penetrated by an axially displaceable stylus (24). A movement takes place when the gun (10) is coupled to the holder.
  • the control bore (20) merges into a bypass line (26) which runs parallel to the vacuum channel (12) and can be closed or opened via a bypass valve (28).
  • the vacuum channel (12) can be closed in a known manner by a shut-off valve (30) with a valve chamber (32), which is preferably designed as a membrane valve and can be acted upon by a negative pressure via a control line (34).
  • a check valve (36) is located in the control line (34). From the valve chamber (32) there is also a nozzle-like bore (38) which is connected to the environment and via which, when the check valve (36) is closed, pressure equalization takes place within the valve chamber (32) to close the shut-off valve (30).
  • the cross section of the bore (38) specifies the so-called suction time.
  • valve (40) with a valve piston (42), which is surrounded on the outside by a helical spring (44) and is covered by a membrane (46).
  • the valve piston (42) has annular recesses (48) and (50) which run around at a distance from one another and from which spring-loaded balls (52) and (54) snap into place, specifically when the valve is either open or closed.
  • a valve plate (56) On the inside of the valve there is a valve plate (56) which, when the valve (40) is closed, bears sealingly against a valve seat (58).
  • valve piston (42) Preferably, three balls offset by 120 ° act on the valve piston (42).
  • valve piston (42) is guided in a bore (60) of the valve housing (62) in such a way that it is possible for the piston (42) to flow around when the valve is open.
  • a control line (64) opens into the bore (60), on the one hand via a line (66) to a changeover valve (68) actuated by the button (18) passing through the seal (16) and on the other hand via a control line (70) leads to a vacuum valve (72) which in turn is opened by the button (24) passing through the flange (19).
  • the changeover valve (68) is a 3-4-way valve, from which the control line (34) leading to the shut-off valve (30) as well as a further control line (74) leading to the regulator valve (40) emanates Valve chamber (76) of the regulator valve (40) leads.
  • the 2-3-way valve (72) to which the control line (70) leads closes or opens a line (80) opening into the vacuum channel (12), in which a non-return valve (82) is additionally arranged.
  • the suction gun (10) shown in principle in FIG. 1 and essentially comprising the elements described above can be used for suctioning waste water from collecting tanks regardless of whether the tank itself has a shut-off valve that can be actuated by vacuum or an open one a cap has a closable tube.
  • connection is automatically keyed in order, if necessary, to be able to open the shut-off valve on the container or, without such a valve, to suck off the liquid and at the same time to ensure that contamination does not occur, in particular after the end of the suction.
  • buttons (18) and (24) are axially displaced into the interior of the gun (10), the valve pistons (86) and (88) which are rigidly connected to the buttons (18) and (24) are at the same time moved so that with respect to the changeover valve (68) the line (66) is opened and the line (74) is closed.
  • valve piston (42) If pressure is now exerted on the membrane (46) of the control valve (40), the valve piston (42) is pushed into the valve housing (62) against the spring force and the valve disk (56) is thus lifted off the valve seat (58) and that Valve (40) opened.
  • a negative pressure is created in the blocked line (74) and in the line (78) leading to the bypass valve (28), so that the bypass line (26) and the control bore (20) are not blocked by the closing piece (22) is, the shut-off valve on the container side is subjected to negative pressure and can thus be opened.
  • FIG. 3 The corresponding position of the elements can be seen in FIG. 3. It can be seen that the spring-loaded balls (52), (54), which can be referred to as ball catches, are engaged in the radially circumferential groove (48). If the negative pressure partially breaks down due to the intake of air, it is sufficient in the chamber (92) of the valve (40) is no longer sufficient to hold the spring in its retracted position and the balls (52), (54) in the circumferential groove (48), so that the control valve (40) closes as a result .
  • bypass valve (28) By closing the regulator valve (40), the bypass valve (28) is also aerated via an opening (77) provided in the valve chamber (76) and thus closed suddenly.
  • the bore (77) is closed by the valve plate (56) when the valve (40) is open. Consequently, there is no further negative pressure on the container-side shut-off valve via the bypass line (28) and the control bore (20), so that it closes.
  • the control lines (80) and (66) via the changeover valve (68) or the vacuum valve (72) are closed, so that the Bore (38) a gradual pressure equalization takes place in the valve chamber (32) of the shut-off valve (30), whereby, as mentioned, the suction time for closing the shut-off valve (30) is predetermined.
  • the check valve (36) closes. Since at the same time the suction gun (10) is pulled off the container, there is sufficient time to suck off residual liquids, the flow velocities so high that the drying occurs due to the initially small gap widths between the trunk (14) and the tubular attachment of the container he follows.
  • the suction gun (10) shown in FIG. 1 can, as mentioned, also be used for suctioning liquids from containers which cannot be closed by a shut-off valve which can be actuated by negative pressure.
  • a shut-off valve which can be actuated by negative pressure.
  • FIGS. 4 and 5 A corresponding use will be illustrated with reference to FIGS. 4 and 5.
  • the gun (10) is coupled to a container which does not have a valve in this regard.
  • both the button (18) and the closure element (22) remain in the original positions.
  • the control bore (20) is largely closed by the bead-like end (84).
  • the valve (68) with its valve piston (86) or plate (86) continuously closes the line (66), so that even when the check valve (82) is open , no negative pressure can be applied via the line (80), the vacuum valve (72) and the line (70) to the shut-off valve (30). Rather, the vacuum required to open the valve (30) is only applied to it when the regulator valve (40) is actuated, that is to say is pressed in the exemplary embodiment. In this case, the necessary negative pressure is present in the valve chamber (32) via the lines (74) and (34) when the check valve (36) is open, so that - as FIG. 5 illustrates - the valve (30) is open .
  • the line (74) is shut off via the regulator valve (40), so that the line through the Bore (38) predetermined suction time closes the shut-off valve (30).
  • FIG. 6 shows a preferred embodiment of a regulator valve (94) which is to functionally perform the task of the regulator valve (40) in the manner described above.
  • the control valve (94) consists of a valve housing (96) in which a valve piston (98) with a valve head (101) is arranged to be axially displaceable.
  • the valve piston (98) starts from an actuating element such as a button (100) which extends with a peripheral edge (102) partially along the circumferential wall (104) of the valve housing (96).
  • the actuating button (100) is supported via the valve piston (98) or head (101) relative to the housing (96) by means of a spring (106).
  • the spring (106) extends in a chamber (108) in which the vacuum connection (64) opens.
  • valve piston (98) is surrounded by an annular channel (110) against which a seal (112) of the valve head (101) can be sealingly applied when the actuating button (100) does not oppose that of the spring (106) caused force is pressed into the housing (96).
  • the annular channel (110) merges into an intermediate space (114) which extends between the housing (96) and the actuating element (100).
  • the intermediate space (114) is connected to a connection (116) running in the housing (96), which leads to the control lines (74) and (78), which are connected to the bypass valve (28) or the shut-off valve (30 ) are connected.
  • the intermediate space (114) has a peripheral seal (118) which then seals the intermediate space (114) from the environment when the actuating button (100) is pressed, that is, against the force caused by the spring (106) is moved.
  • the valve head (101) with its seal (112) is spaced from the ring channel (110).
  • the negative pressure can continue via the connection (64) and the chamber (108) into the intermediate space (114) and reach the connection (116). Due to the negative pressure, the actuation button (100) will remain in its position drawn into the housing (96). This means that only a short press on the actuation button (100) is required to open the valve (94).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

L'invention se rapporte à un dispositif d'aspiration (10) servant à aspirer des liquides dans un réservoir ventilé pour eaux usées au moyen d'une dépression véhiculée par le dispositif d'aspiration pouvant être relié au réservoir pour eaux usées, dispositif d'aspiration comprenant une soupape de réglage (40) à commande extérieure ou manuelle, une (première) soupape d'arrêt (30), par exemple une soupape à diaphragme, reliée à la soupape de réglage et délivrant ou bloquant une dépression nécessaire à l'aspiration, et éventuellement une (deuxième) soupape d'arrêt disposée du côté du réservoir et actionnée par la dépression. Pour pouvoir aspirer des eaux usées dans le réservoir indépendamment de la présence ou non d'une soupape d'arrêt du côté du réservoir, le dispositif d'aspiration (10) présente des éléments de détection (18, 24) qui indiquent s'il existe ou non une soupape d'arrêt du côté du réservoir et qui commandent directement ou indirectement la soupape d'arrêt disposée du côté du dispositif au moyen de la soupape de réglage.
EP94931539A 1993-10-22 1994-10-21 Dispositif d'aspiration Expired - Lifetime EP0675987B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4335945A DE4335945C2 (de) 1993-10-22 1993-10-22 Absaugvorrichtung
DE4335945 1993-10-22
PCT/EP1994/003469 WO1995011354A2 (fr) 1993-10-22 1994-10-21 Dispositif d'aspiration

Publications (2)

Publication Number Publication Date
EP0675987A1 true EP0675987A1 (fr) 1995-10-11
EP0675987B1 EP0675987B1 (fr) 1999-07-21

Family

ID=6500689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94931539A Expired - Lifetime EP0675987B1 (fr) 1993-10-22 1994-10-21 Dispositif d'aspiration

Country Status (5)

Country Link
EP (1) EP0675987B1 (fr)
JP (1) JPH08505202A (fr)
AU (1) AU8059194A (fr)
DE (2) DE4335945C2 (fr)
WO (1) WO1995011354A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19633178A1 (de) * 1996-08-17 1998-02-19 Roediger Anlagenbau Steuerung für ein mit Unterdruck betätigbares Absaug- und/oder Wasserventil
DE19635819C1 (de) * 1996-09-04 1998-02-19 Kutschke Fahrzeugbau Gmbh Entsorgungsfahrzeug
DE20006269U1 (de) 2000-04-05 2000-12-21 Evac International Oy, Helsinki Anschlußkupplung zur Abwasserentsorgung von Flugzeugen
DE10216091C1 (de) * 2002-04-11 2003-08-14 Roediger Vakuum & Haustechnik Überwachungsanordnung
DE202011002009U1 (de) * 2011-01-27 2012-04-30 Hugo Vogelsang Maschinenbau Gmbh Absaugkupplung
DE102014100797B4 (de) 2014-01-24 2018-08-02 Bilfinger Water Technologies Gmbh Anordnung zum Absaugen von Flüssigkeit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3670114D1 (de) * 1986-02-25 1990-05-10 Kaiser Aerospace & Electronics Brauchwassersammelbehaelter und hydraulischer antreiber.
DE3823515A1 (de) * 1988-05-10 1989-11-23 Harald Michael Steuervorrichtung fuer ein durch unterdruck betaetigbares absaugventil an einer vakuumleitung, insbesondere fuer abwasser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9511354A2 *

Also Published As

Publication number Publication date
JPH08505202A (ja) 1996-06-04
WO1995011354A3 (fr) 1995-07-27
DE4335945C2 (de) 1997-07-10
WO1995011354A2 (fr) 1995-04-27
DE4335945A1 (de) 1995-05-04
EP0675987B1 (fr) 1999-07-21
AU8059194A (en) 1995-05-08
DE59408521D1 (de) 1999-08-26

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