EP0758421B1 - Flush valve - Google Patents
Flush valve Download PDFInfo
- Publication number
- EP0758421B1 EP0758421B1 EP95915801A EP95915801A EP0758421B1 EP 0758421 B1 EP0758421 B1 EP 0758421B1 EP 95915801 A EP95915801 A EP 95915801A EP 95915801 A EP95915801 A EP 95915801A EP 0758421 B1 EP0758421 B1 EP 0758421B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- cup
- flush
- valve body
- pump
- 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
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
Definitions
- the invention relates to a flush valve for whirling Sedimentation and for breaking up and mixing in Fabrics forming floating blankets in pumping stations, in particular in wastewater pumping stations, which are equipped with a pump unit, especially connected to a submersible pump and the print page for an adjustable period of time connects the pump unit to the pump station and such a circulation of the pump medium within the Pump station achieved, consisting of a valve housing, with an outlet and one with the pressure side of the pump connected inlet, sealing one on the valve housing attached valve cup and a valve body, which in the valve opening position in the valve cup and in the valve closing position in front of one on the outlet side in the valve housing attached sealing seat, as is already known from US-A-4,108,203.
- the speed of movement of the This will cause the diaphragm in the direction of the valve housing regulated that the valve head has an opening that the Flow of a damping medium contained in the bellows is in the space between the valve head and the diaphragm allowed.
- the size of the opening and the height of the Negative pressure directly determine the speed. Oil is usually used as the damping medium.
- the speed is also determined by the viscosity of the Damping medium influences and is therefore strongly temperature-dependent. Setting the rinse time to different Liquid temperatures must therefore be on the flush valve attached control valve and is therefore not arbitrarily for the operator of the pump station variable.
- this flush valve takes up a lot of space, especially through the attached bellows, and has a relatively high weight.
- the invention is therefore based on the object of a new one To develop a flushing valve whose flushing time is not temperature-dependent is, d. that is, no readjustments to the Valve must be done at different temperatures the flushing time is also arbitrary from case to case is adjustable and that moreover with relatively small Dimensions and small weight is to be produced.
- this object is achieved with a flush valve solved, which is characterized in that on the Valve cup a device acting in this Locking the valve body in its rest position is arranged and that after actuation of the locking device the valve body from the pump medium flowing past in the direction of delivery of the pump from its rest position in the valve cup against the sealing seat is eligible.
- the flush valve according to the invention thus shows no dependency regarding the rinsing time versus the liquid temperature, that prevails in the pump station.
- the rinsing time outside the pumping station can be Operators can be set arbitrarily from case to case, without making any adjustments to the valve body itself should be.
- by saving one Bellows a great weight and volume reduction of the entire flush valve.
- By avoiding oily Damping media also eliminates the risk of oil leakage in the pump station in the event of damage and the associated Ecological damage.
- a is used as the locking device Working cylinder provided with a piston rod and the Piston rod is in front of the through an opening in the valve cup Valve body slidably arranged, the piston rod locked the valve body in the extended position and in released withdrawn position.
- the locking device e.g. B. a permanent magnet slidably arranged in a working cylinder, a magnetic one in the extended position Valve body locked. By reversing the The permanent magnet is then attached to the valve body practiced magnetic force reduced so that it is released becomes.
- the opening is expediently located at the outlet facing side of the valve cup.
- the working cylinder is pneumatic or operated hydraulically or electromagnetically.
- the valve housing typically has the shape of a Cylinder on and a ball is provided as a valve body.
- the valve body has a higher one Density on than the medium to be pumped and the valve cup demonstrates after installing the valve in the pump station below. By actuating the locking device then the valve body upwards from the flow of the Pump medium entrained and brought in front of the sealing seat.
- valve body has a lower density than the medium to be pumped and the valve cup shows after installing the valve in the Pump station up. By operating the locking device the valve body is then down over the Delivery flow of the pump brought in front of the sealing seat.
- Such a flushing valve can be found at the outlet of the pump or be installed on the pump line.
- the inlet cross section is preferably smaller than that Outlet cross section to create a vacuum that the Operation of the ball favors.
- valve housing 2 With an inlet 3 and a Outlet 4, the inlet cross section 14 smaller than that Outlet cross section 15 is at a vacuum at the To achieve promotion in the valve housing 2.
- the inlet 3 is connected to the pressure side of the pump.
- a valve cup 5 is attached to the Valve housing 2.
- Valve housing 2 is a spherical valve body 6. This ball 6 rests in the valve opening position I in the valve cup 5.
- In the valve closing position II is the ball 6 in front of the outlet 4 in Valve housing 2 attached sealing seat 7.
- Valves 1 attached to the pressure line 12. To make things easier during assembly, the valve 1 has an eyelet 13.
- the valve cup 5 has an opening 8 on the outlet side is arranged.
- a piston rod 10 projects into this through this opening 8 Purge valve inside.
- the piston rod 10 is with the Working cylinder 9 connected, which via the pneumatic lines 11 can be actuated.
- valve opening position I the piston rod 10 is off the pneumatic cylinder 9 pushed out.
- the pump pressure goes through because of the ball 6 held down Flushing line and the outlet 4.
- the operator can after Keep this rinsing position set at your own discretion.
- the extended piston rod switches over to delivery 10 pressed back into the pneumatic cylinder 9.
- the Piston rod 10 thus clears the way for ball 6.
- the pump medium flowing past the ball 6 tears the Ball 6 in front of the sealing seat 7 and thus ends the flushing.
- the ball is 6 heavier than the pumped medium to be pumped and is therefore located in the flush valve 1 below.
- FIG. 2 shows a flush valve in which the ball 6 is lighter than that to be conveyed Pump medium is and thus floats in the flush valve.
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)
- Multiple-Way Valves (AREA)
- Reciprocating Pumps (AREA)
- Check Valves (AREA)
- Details Of Reciprocating Pumps (AREA)
- Fluid-Driven Valves (AREA)
Description
Die Erfindung betrifft ein Spülventil zum Aufwirbeln von Sedimentationen und zum Aufbrechen und Einmischen von Schwimmdecken bildenden Stoffen in Pumpstationen, insbesondere in Abwasserpumpstationen, welches mit einer Pumpeneinheit, insbesondere mit einer Tauchmotorpumpe, verbunden ist und während einer einstellbaren Zeitdauer die Druckseite der Pumpeneinheit mit der Pumpstation verbindet und so eine Zirkulation des Pumpenmediums innerhalb der Pumpstation erzielt, bestehend aus einem Ventilgehäuse, mit einem Auslaß und einem mit der Druckseite der Pumpe verbundenen Einlaß, einen am Ventilgehäuse abdichtend angebrachten Ventilbecher und einem Ventilkörper, welcher in der Ventilöffnungsposition im Ventil becher ruht und in der Ventilschließposition vor einem auslaßseitig im Ventilgehäuse angebrachten Dichtsitz sitzt, wie von Patentschrift US-A-4,108,203 schon bekannt ist.The invention relates to a flush valve for whirling Sedimentation and for breaking up and mixing in Fabrics forming floating blankets in pumping stations, in particular in wastewater pumping stations, which are equipped with a pump unit, especially connected to a submersible pump and the print page for an adjustable period of time connects the pump unit to the pump station and such a circulation of the pump medium within the Pump station achieved, consisting of a valve housing, with an outlet and one with the pressure side of the pump connected inlet, sealing one on the valve housing attached valve cup and a valve body, which in the valve opening position in the valve cup and in the valve closing position in front of one on the outlet side in the valve housing attached sealing seat, as is already known from US-A-4,108,203.
Bei einem anderen bekannten Spülventil der genannten Art (EP-A-0 384 903) ist an dem Ventilgehäuse ein Balg abdichtend befestigt, der eine abdichtend befestigte Membran und ein Ventilelement enthält, das abhängig von der Drucksituation in dem Ventil in seiner ersten Ruheposition gegen einen Sitz in dem Ventil abdichtet und somit letzteres schlieBt und das in seiner anderen Ruhestellung in dem Ventilbecher aufgenommen wird, ohne den Durchfluß durch das Ventil zu behindern. Bei diesem Ventil wird durch die Strömung des Pumpenmediums im Ventilkörper ein Unterdruck erzeugt, der die Membran beeinfluBt und das Schließen des Ventils nach einer bestimmten Zeit verursacht. Die Membran wird von dem erzeugten Unterdruck nach oben bewegt und bewegt somit auch den Ventilkörper. Die Geschwindigkeit der Bewegung der Membran in Richtung des Ventilgehäuses wird dadurch geregelt, daß der Ventil kopf eine Öffnung aufweist, die den Durchfluß eines Dämpfungsmediums, welches im Balg enthalten ist, in den Raum zwischen den Ventilkopf und der Membran gestattet. Die GröBe der Öffnung und die Höhe des Unterdrucks bestimmen dabei die Geschwindigkeit unmittelbar. Als Dämpfungsmedium dient in der Regel Öl.In another known flush valve of the type mentioned (EP-A-0 384 903) is a bellows sealing on the valve housing attached, which is a sealingly attached membrane and a Valve element contains that depending on the pressure situation in the valve in its first rest position against one Seals seat in the valve and thus closes the latter and that in its other rest position in the valve cup is recorded without increasing the flow through the valve hinder. With this valve the flow of the Pump medium generates a negative pressure in the valve body affects the diaphragm and closes the valve after caused a certain time. The membrane is from the generated negative pressure moves up and thus also moves the valve body. The speed of movement of the This will cause the diaphragm in the direction of the valve housing regulated that the valve head has an opening that the Flow of a damping medium contained in the bellows is in the space between the valve head and the diaphragm allowed. The size of the opening and the height of the Negative pressure directly determine the speed. Oil is usually used as the damping medium.
Die Geschwindigkeit wird aber auch durch die Viskosität des Dämpfungsmediums beeinfluBt und ist daher stark temperaturabhängig. Das Einstellen der Spülzeit auf verschiedene Flüssigkeitstemperaturen muß daher mit einem am Spülventil angebrachten Regulierventil erfolgen und ist somit nicht ohne weiteres für den Betreiber der Pumpstation beliebig variierbar.The speed is also determined by the viscosity of the Damping medium influences and is therefore strongly temperature-dependent. Setting the rinse time to different Liquid temperatures must therefore be on the flush valve attached control valve and is therefore not arbitrarily for the operator of the pump station variable.
Ferner nimmt dieses Spülventil sehr viel Raum ein, insbesondere durch den angebrachten Balg, und besitzt ein relativ hohes Gewicht.Furthermore, this flush valve takes up a lot of space, especially through the attached bellows, and has a relatively high weight.
Der Erfindung liegt daher die Aufgabe zugrunde, ein neues Spülventil zu entwickeln, dessen Spülzeit nicht temperaturabhängig ist, d. h., daB keine Nachregulierungen an dem Ventil bei verschiedenen Temperaturen erfolgen müssen, dessen Spülzeit desweiteren von Fall zu Fall beliebig einstellbar ist und daß darüber hinaus mit relativ kleinen Abmessungen und kleinem Gewicht herzustellen ist.The invention is therefore based on the object of a new one To develop a flushing valve whose flushing time is not temperature-dependent is, d. that is, no readjustments to the Valve must be done at different temperatures the flushing time is also arbitrary from case to case is adjustable and that moreover with relatively small Dimensions and small weight is to be produced.
Erfindungsgemäß wird diese Aufgabe mit einem Spülventil gelöst, welches dadurch gekennzeichnet ist, daß an dem Ventilbecher eine in diesen wirkende Vorrichtung zur Arretierung des Ventilkörpers in dessen Ruheposition angeordnet ist und daß nach Betätigung der Arretiervorrichtung der Ventilkörper vom in Förderrichtung der Pumpe vorbeiströmenden Pumpenmedium aus seiner Ruheposition im Ventilbecher gegen den Dichtsitz förderbar ist.According to the invention, this object is achieved with a flush valve solved, which is characterized in that on the Valve cup a device acting in this Locking the valve body in its rest position is arranged and that after actuation of the locking device the valve body from the pump medium flowing past in the direction of delivery of the pump from its rest position in the valve cup against the sealing seat is eligible.
Das erfindungsgemäße Spülventil zeigt somit keine Abhängigkeit bezüglich der Spülzeit gegenüber der Flüssigkeitstemperatur, die in der Pumpenstation herrscht. Darüber hinaus kann die Spülzeit außerhalb der Pumpstation vom Betreiber von Fall zu Fall beliebig eingestellt werden, ohne daß Einstellungen am Ventilkörper selbst vorgenommen werden müßten. Ferner erfolgt durch die Einsparung eines Balgs eine große Gewichts- und Volumenreduktion des gesamten Spülventils. Durch die Vermeidung von öligen Dämpfungsmedien entfällt auch die Gefahr von Ölaustritt in die Pumpenstation bei Beschädigung und die damit verbundene Umweltbelastung.The flush valve according to the invention thus shows no dependency regarding the rinsing time versus the liquid temperature, that prevails in the pump station. About that In addition, the rinsing time outside the pumping station can be Operators can be set arbitrarily from case to case, without making any adjustments to the valve body itself should be. Furthermore, by saving one Bellows a great weight and volume reduction of the entire flush valve. By avoiding oily Damping media also eliminates the risk of oil leakage in the pump station in the event of damage and the associated Ecological damage.
In bevorzugter Ausführung ist als Arretiervorrichtung ein Arbeitszylinder mit einer Kolbenstange vorgesehen und die Kolbenstange ist durch eine Öffnung im Ventilbecher vor den Ventilkörper schiebbar angeordnet, wobei die Kolbenstange in ausgefahrener Position den Ventilkörper arretiert und in zurückgezogener Position freigibt. Es ist jedoch auch eine Ausführung denkbar, bei dem keine Teile der Arretiervorrichtung in den Ventilbecher sich erstrecken, so z. B. ein in einem Arbeitszylinder verschiebbar angeordneter Permanentmagnet, der in ausgefahrener Position einen magnetischen Ventilkörper arretiert. Durch Zurückfahren des Permanentmagneten wird dann die auf den Ventilkörper augeübte Magnetkraft soweit reduziert, daß dieser freigegeben wird.In a preferred embodiment, a is used as the locking device Working cylinder provided with a piston rod and the Piston rod is in front of the through an opening in the valve cup Valve body slidably arranged, the piston rod locked the valve body in the extended position and in released withdrawn position. However, it is also one Execution conceivable in which no parts of the locking device extend into the valve cup, e.g. B. a permanent magnet slidably arranged in a working cylinder, a magnetic one in the extended position Valve body locked. By reversing the The permanent magnet is then attached to the valve body practiced magnetic force reduced so that it is released becomes.
Zweckmäßigerweise ist die Öffnung an der zum Auslaß weisenden Seite des Ventilbechers angeordnet.The opening is expediently located at the outlet facing side of the valve cup.
In bevorzugter Ausführung wird der Arbeitszylinder pneumatisch oder hydraulisch oder elektromagnetisch betätigt. In a preferred embodiment, the working cylinder is pneumatic or operated hydraulically or electromagnetically.
Es ist jedoch auch eine Ausführung denkbar, bei der der Arbeitszylinder rein mechanisch betätigt wird.However, an embodiment is also conceivable in which the Working cylinder is operated purely mechanically.
Typischerweise weist das Ventilgehäuse die Gestalt eines Zylinders auf und als Ventilkörper ist eine Kugel vorgesehen.The valve housing typically has the shape of a Cylinder on and a ball is provided as a valve body.
In einer Ausführungsform weist der Ventilkörper eine höhere Dichte auf als das zu fördernde Medium und der Ventil becher weist nach Einbau des Ventils in die Pumpenstation nach unten. Durch die Betätigung der Arretiervorrichtung wird dann der Ventilkörper nach oben vom Förderstrom des Pumpenmediums mitgerissen und vor den Dichtsitz gebracht.In one embodiment, the valve body has a higher one Density on than the medium to be pumped and the valve cup demonstrates after installing the valve in the pump station below. By actuating the locking device then the valve body upwards from the flow of the Pump medium entrained and brought in front of the sealing seat.
In einer anderen Ausführung weist der Ventilkörper hingegen eine niedrigere Dichte auf als das zu fördernde Medium und der Ventilbecher weist nach Einbau des Ventils in die Pumpenstation nach oben. Durch die Betätigung der Arretiervorrichtung wird dann der Ventilkörper nach unten über den Förderstrom der Pumpe vor den Dichtsitz gebracht.In another embodiment, however, the valve body has a lower density than the medium to be pumped and the valve cup shows after installing the valve in the Pump station up. By operating the locking device the valve body is then down over the Delivery flow of the pump brought in front of the sealing seat.
Ein solches Spülventil kann sowohl am Auslauf der Pumpe oder an der Pumpenleitung eingebaut werden.Such a flushing valve can be found at the outlet of the pump or be installed on the pump line.
Vorzugsweise ist der Einlaßquerschnitt kleiner als der Auslaßquerschnitt, um einen Unterdruck zu erzeugen, der die Betätigung der Kugel begünstigt.The inlet cross section is preferably smaller than that Outlet cross section to create a vacuum that the Operation of the ball favors.
Die Erfindung ist in der Zeichnung beispielsweise veranschaulicht
und im nachstehenden im einzelnen anhand der
Zeichnung beschrieben. Es zeigen:
Wie aus der Zeichnung zu sehen ist, besteht das Spülventil
1 aus einem Ventilgehäuse 2 mit einem Einlaß 3 und einem
Auslaß 4, wobei der Einlaßquerschnitt 14 kleiner als der
Auslaßquerschnitt 15 ist, um einen Unterdruck bei der
Förderung im Ventilgehäuse 2 zu erzielen. Der Einlaß 3 ist
dabei mit der Druckseite der Pumpe verbunden. An dem
Ventilgehäuse 2 ist ein Ventil becher 5 angebracht. In dem
Ventilgehäuse 2 befindet sich ein kugelförmiger Ventilkörper
6. Diese Kugel 6 ruht in der Ventilöffnungsposition
I im Ventilbecher 5. In der Ventilschließposition II
befindet sich die Kugel 6 vor einem vor dem Auslaß 4 im
Ventilgehäuse 2 angebrachten Dichtsitz 7.As can be seen from the drawing, there is the flush valve
1 from a
Wie in beiden Figuren ersichtlich ist, sind die gezeigten
Ventile 1 an der Druckleitung 12 angebracht. Zur Erleichterung
der Montage weist das Ventil 1 eine Öse 13 auf.As can be seen in both figures, those are shown
Valves 1 attached to the
Der Ventilbecher 5 weist eine Öffnung 8 auf, die auslaßseitig
angeordnet ist.The
Durch diese Öffnung 8 ragt eine Kolbenstange 10 in das
Spülventilinnere hinein. Die Kolbenstange 10 ist mit dem
Arbeitszylinder 9 verbunden, welcher über die Pneumatikleitungen
11 betätigbar ist.A
In der Ventilöffnungsposition I ist die Kolbenstange 10 aus
dem Pneumatikzylinder 9 herausgedrückt. Der Pumpendruck
geht wegen der nach unten gehaltenen Kugel 6 durch die
Spülleitung und den Auslaß 4. Der Betreiber kann nach
freiem Ermessen diese Spülposition eingestellt halten. Nach
Umschalten auf Förderung wird die ausgefahrene Kolbenstange
10 zurück in den Pneumatikzylinder 9 gedrückt. Die
Kolbenstange 10 gibt somit den Weg für die Kugel 6 frei.
Das an der Kugel 6 vorbeiströmende Pumpenmedium reißt die
Kugel 6 vor den Dichtsitz 7 und beendet somit die Spülung. In the valve opening position I, the
Bei der in der Figur 1 gezeigten Ausführung ist die Kugel 6 schwerer als das zu fördernde Pumpenmedium und liegt demzufolge im Spülventil 1 unten.In the embodiment shown in FIG. 1, the ball is 6 heavier than the pumped medium to be pumped and is therefore located in the flush valve 1 below.
Das in der Fig. 2 gezeigte Ausführungsbeispiel hingegen zeigt
ein Spülventil, bei dem die Kugel 6 leichter als das zu fördernde
Pumpenmedium ist und somit im Spülventil aufschwimmt.The exemplary embodiment shown in FIG. 2, however, shows
a flush valve in which the
Durch Ausschalten der Pumpe wird durch den sich einstellenden
Druckausgleich des Pumpenmediums zwischen Einlaß 3 und Auslaß
4 der Anpreßdruck der Kugel 6 auf den Dichtsitz 7 aufgehoben.
Je nach Ausführungsbeispiel schwimmt dann die Kugel 6 im Pumpenmedium
auf oder sinkt in diesen nach unten, bis daß sie vom
Ventilbecher 5 aufgenommen wird und mittels der Kolbenstange
10 wieder arretierbar ist.When the pump is switched off, the
Pressure equalization of the pump medium between
Claims (8)
- Flush valve for creating turbulence in sedimentations and for breaking up and blending substances that form surface scum in pumping stations, more particularly in effluent pumping stations, the valve being connected to a pump unit, more particularly to a submersible motor-driven pump, and connecting the delivery side of the pump unit to the pumping station for an adjustable duration and thereby achieving circulation of the pumped medium inside the pumping station, and comprising:characterised in that a device for immobilising the valve body (6) in its rest position is arranged on the valve cup (5) and operates thereinto and that after the immobilizing device has been actuated the valve body (6) can be advanced by the pumped medium flowing past in the pump's delivery direction from its rest position in the valve cup (5) and up against the sealing seat (7).a valve case having an outlet and having an inlet connected to the delivery side of the pump,a valve cup mounted sealingly on the valve case, anda valve body which in the valve opening position rests in the valve cup and in the valve closure position rests in front of a sealing seat mounted in the valve case on the outlet side,
- Flush valve according to claim 1, characterised by the provision of a working cylinder (9) with a piston rod (10) as the immobilizing device and by the fact that the piston rod (10) is arranged before the valve body (6) so as to be able to slide through an opening (8) in the valve cup (5), the piston rod (10) immobilizing the valve body (6) in the extended position and releasing it in the retracted position.
- Flush valve according to claim 2, characterised in that the opening (8) is disposed on the face of the valve cup (5) that points towards the outlet (4).
- Flush valve according to claim 2 or 3, characterised in that the working cylinder (9) is adapted to be actuated pneumatically or hydraulically or electromagnetically.
- Flush valve according to any of claims 1 to 4, characterised in that the valve case (2) has the shape of a cylinder and a sphere is provided as the valve body (5).
- Flush valve according to any of claims 1 to 5, characterised in that the valve body (6) has a lesser density than the medium being conveyed and that the valve cup (5) points upwards once the valve (1) is installed.
- Flush valve according to any of claims 1 to 5, characterised in that the valve body (6) has a greater density than the medium being conveyed and that the valve cup (5) points downwards once the valve (1) is installed.
- Flush valve according to any of claims 1 to 7, characterised in that the inlet cross-section (14) is smaller than the outlet cross-section (15).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4415233 | 1994-04-30 | ||
| DE4415233A DE4415233C1 (en) | 1994-04-30 | 1994-04-30 | Flush valve |
| PCT/DE1995/000537 WO1995030060A1 (en) | 1994-04-30 | 1995-04-13 | Flush valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0758421A1 EP0758421A1 (en) | 1997-02-19 |
| EP0758421B1 true EP0758421B1 (en) | 1998-02-04 |
Family
ID=6516933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95915801A Expired - Lifetime EP0758421B1 (en) | 1994-04-30 | 1995-04-13 | Flush valve |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0758421B1 (en) |
| DE (2) | DE4415233C1 (en) |
| WO (1) | WO1995030060A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19610697A1 (en) * | 1996-03-19 | 1997-09-25 | Abs Pumps Ltd | Foot piece |
| PL326007A1 (en) * | 1998-04-22 | 1999-10-25 | Miroslaw Szuster | Method of and apparatus for producing automatic ciculation in a waste water holding chamber |
| CN104863251A (en) * | 2015-04-20 | 2015-08-26 | 安徽汇隆给水设备有限公司 | Spherical two-way sewerage device and sewage method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE397728A (en) * | ||||
| US4108203A (en) * | 1974-08-08 | 1978-08-22 | Brown Oil Tools, Inc. | Check valve assembly |
| SE7908743L (en) * | 1979-10-23 | 1981-04-24 | Flygt Ab | SET AND DEVICE FOR AUTOMATIC CIRCULATION IN DRAINAGE PUMPS |
| DE3029216A1 (en) * | 1980-08-01 | 1982-02-18 | Rheinisch-Westfälisches Elektrizitätswerk AG, 4300 Essen | Tram system using over head current supply - energises AC tram drive via transformer and rectifier providing same voltage as auxiliary battery supply |
| SE463218B (en) * | 1989-02-21 | 1990-10-22 | Flygt Ab | SETTING AND DEVICE FOR AUTHORIZATION OF AATER CIRCULATION IN WASTEWATER PUMP STATIONS |
| EP0388195A1 (en) * | 1989-03-15 | 1990-09-19 | Richard Lee Williams | Pressure sewer system |
| SE9202759L (en) * | 1992-09-24 | 1993-09-27 | Flygt Ab Itt | Device for providing circulation in pumping stations |
-
1994
- 1994-04-30 DE DE4415233A patent/DE4415233C1/en not_active Expired - Fee Related
-
1995
- 1995-04-13 DE DE59501418T patent/DE59501418D1/en not_active Expired - Fee Related
- 1995-04-13 WO PCT/DE1995/000537 patent/WO1995030060A1/en active IP Right Grant
- 1995-04-13 EP EP95915801A patent/EP0758421B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4415233C1 (en) | 1995-12-14 |
| EP0758421A1 (en) | 1997-02-19 |
| WO1995030060A1 (en) | 1995-11-09 |
| DE59501418D1 (en) | 1998-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2450094C3 (en) | ||
| DE10302508B4 (en) | Rinse unit for a toilet | |
| DE69932063T2 (en) | IMPROVED AUTOMATIC EXHAUST VALVE | |
| CH619761A5 (en) | ||
| DE102007043522B4 (en) | Switch-off device for a suction jet pump, in particular in a fuel tank of a motor vehicle | |
| DE8627804U1 (en) | pump | |
| DE69636762T2 (en) | LIFTING VALVE WITH PRESSURE-COUNTERED PRE-CONTROLLED VALVE ORGAN | |
| EP0758421B1 (en) | Flush valve | |
| DE69118403T2 (en) | VALVE DEVICE | |
| DE202006001009U1 (en) | Servo valve to be controlled by an armature and activated by its own medium has a step piston moving in a valve casing and supporting a valve disk with a pressure chamber linked to a valve inlet | |
| DE2305124A1 (en) | ELECTROMAGNETICALLY ACTIVATED MULTI-DIRECTIONAL VALVE | |
| DE4417587B4 (en) | Control magnet for electrohydraulically controlled systems | |
| EP3750767B1 (en) | Transition device for connecting two movably interconnected vehicle parts | |
| AT393587B (en) | DISHWASHER FOR BUCKET MILLING SYSTEMS | |
| DE19809047A1 (en) | Solenoid valve for a liquid-controlled heating and / or cooling system | |
| DE2545252A1 (en) | FLUSH AIR VALVE FOR CLEANING HOLLOW FILTER BODIES | |
| DE3509720C2 (en) | ||
| DE602004013432T2 (en) | LIQUID FLOW CONTROL | |
| DE102014012166A1 (en) | Liquid drainage device and thus equipped maintenance device for compressed air preparation | |
| DE3238409C1 (en) | Automatic drain valve for compressed air systems, in particular compressed air brake systems of motor vehicles | |
| WO2006029898A1 (en) | Membrane pump for conveying liquids | |
| DE3220951A1 (en) | Diaphragm flushing valve | |
| AT287506B (en) | Ventilation device for pump systems with an air tank and a ventilation chamber | |
| DE29512267U1 (en) | Valve for liquid media | |
| DE2503117A1 (en) | BARRIER |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19961127 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB NL |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| 17Q | First examination report despatched |
Effective date: 19970415 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB NL |
|
| REF | Corresponds to: |
Ref document number: 59501418 Country of ref document: DE Date of ref document: 19980312 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19980317 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20010327 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20010417 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20010424 Year of fee payment: 7 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020413 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021101 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20020413 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021231 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20021101 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20060629 Year of fee payment: 12 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071101 |