EP0392034B1 - Liquid ring pump with a liquid separator integral with the side cover - Google Patents

Liquid ring pump with a liquid separator integral with the side cover Download PDF

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Publication number
EP0392034B1
EP0392034B1 EP89106359A EP89106359A EP0392034B1 EP 0392034 B1 EP0392034 B1 EP 0392034B1 EP 89106359 A EP89106359 A EP 89106359A EP 89106359 A EP89106359 A EP 89106359A EP 0392034 B1 EP0392034 B1 EP 0392034B1
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EP
European Patent Office
Prior art keywords
liquid
deflector wall
ring pump
gas
side cover
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
EP89106359A
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German (de)
French (fr)
Other versions
EP0392034A1 (en
Inventor
Peter Dipl.-Ing. Trimborn
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.)
Siemens AG
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Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT89106359T priority Critical patent/ATE79445T1/en
Priority to DE8989106359T priority patent/DE58902050D1/en
Priority to EP89106359A priority patent/EP0392034B1/en
Priority to US07/500,085 priority patent/US5009782A/en
Priority to JP1990038467U priority patent/JPH078863Y2/en
Publication of EP0392034A1 publication Critical patent/EP0392034A1/en
Application granted granted Critical
Publication of EP0392034B1 publication Critical patent/EP0392034B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/004—Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation

Definitions

  • the invention relates to a liquid ring pump according to the preamble of claim 1.
  • Such a liquid ring pump is known from DE-OS 34 21 866.
  • the deflection wall opposite the pressure slot is designed as a baffle for the gas-liquid mixture emerging from the pressure slot. Further sharp deflections of the mixture flow take place through wall parts arranged further above and behind the deflection wall. In the case of these deflections, the specifically heavier liquid particles are separated from the gas particles because the liquid particles strike the deflection wall and the other wall parts because of their greater inertia. The liquid particles then flow down into the two chambers formed by the deflection wall in the side plate.
  • the multiple deflection of the mixture flow requires, on the one hand, appropriately arranged wall parts which lead to a form of the side plate that is difficult to manufacture, and on the other hand, such sharp deflections also result in considerable flow losses and require a large overall length.
  • the invention has for its object to design a liquid ring pump according to the preamble of claim 1 so that an improved liquid separation is achieved with less flow losses by means of a side plate that is easier to manufacture.
  • the rotational movement of the gas-liquid mixture is improved in that the other side of the deflecting wall reaches close to the control disk while leaving a passage slot, or else in that the other side of the deflecting wall also abuts the control disk.
  • the liquid outlet can advantageously also be arranged in this center.
  • the inner tube thus serves to discharge the gas, whereas the liquid can drain through the shorter outer tube.
  • the two tubes are advantageously joined together concentrically.
  • the pump rotor 3 provided with rotor blades 2 is arranged eccentrically in the pump chamber 4 of the pump housing 5 with respect to the housing axis.
  • the pump chamber 4 is closed at least on one side by means of a control disk 7 provided with a suction and pressure slot 6a and 6b.
  • the control disk 7 is covered by a side plate 8 attached to the pump housing 5.
  • a suction chamber 10 and a pressure chamber 11 are known to be delimited from one another by a web 9.
  • an arc-shaped, preferably circular-shaped deflection wall 12 is provided, which divides the pressure chamber 11 into an inner and outer chamber 13 and 14.
  • the deflection wall 12 is designed such that it runs with its one side 15 onto the pressure slot 6b of the control disk and abuts the control disk 7 with the side edge 16 of this side 15. In this way, the deflection wall 12 has a course following the control disk 7 which is approximately parallel to the gas-liquid flow (arrow 17) leaving the pressure slot 6b in the axial direction.
  • the gas-liquid flow is set in rotation on its further path through the deflection wall 12. Due to the centrifugal forces that occur, the liquid particles are thrown out of the gas-liquid mixture against the deflection wall 12 and flow downwards there.
  • the gas particles move to a passage slot 20 existing between the end 18 of the other side 19 of the deflection wall 12 and the control disk 7 and pass through this into the outer chamber 14.
  • an outward pressure connection 23 for the gas and an outlet connection 24 for the liquid are also provided on the side plate of the liquid ring pump 1 shown in FIGS. 1 and 2. With 23 'and 24' other possible positions of the pressure and drain connector on the side plate 8 are indicated.
  • an upwardly closed inner chamber 13 is formed in the side plate 8 by the deflecting wall 12.
  • a double pipe consisting of inner and outer pipes 25 and 26 is arranged in the center, i.e. In the central axis of the circular arc-shaped deflection wall 12, a double pipe consisting of inner and outer pipes 25 and 26 is arranged.
  • the inner tube 25 projects beyond the outer tube 26 in the axial direction and forms the gas outlet.
  • the liquid separated from the gas-liquid mixture can flow off via the outer tube 26.
  • the level 27 of the liquid level in the side plate 8 is determined by the end of this outer tube 26. In the liquid ring pump shown in FIG. 1, this liquid level 27 is determined by the position of the drain connector 24 on the side plate 8. Via an opening 28 provided in the web 9 separating the suction and pressure chambers 10 and 11, the liquid which has separated out can be returned to the pump circuit.
  • the circular arc-shaped deflection wall 12 can be brought up to the control disk 7 with the end 18 of the other side 19, ie it can also rest against the control disk 7 with this end 18, as is indicated by dashed lines in FIG. 1. This eliminates the passage slot 20 and the outer chamber 14 become inoperative.
  • the space delimited by the deflection wall 12 can thus encompass the entire pressure side half of the side plate.
  • a drain connection leading out laterally from the side plate can also be provided, as shown in FIG. 1. It is also possible to combine the two types of drain.

Abstract

The invention relates to a liquid ring pump with a liquid separator which is integrated in the side cover and which has a deflector wall (12) dividing the chamber in the side cover into two chambers, on which pump the pressure slit (6b) provided in the disc cam (7) opens out into one chamber (13), and a gas outlet (23; 25) and at least one liquid outlet (24, 24') are arranged in the area of the other chamber (14) on the side cover. An improved liquid separation with little flow loss is achieved in that the deflector wall (12) is designed with an arched shape and extends through an angle of at least 180 DEG , this wall bearing on the disc cam (7) with the side edge (16) of its one side (15) extending axially in the direction of the gas-liquid flow emerging from the pressure slit (6b). <IMAGE>

Description

Die Erfindung betrifft eine Flüssigkeitsringpumpe gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a liquid ring pump according to the preamble of claim 1.

Eine solche Flüssigkeitsringpumpe ist durch die DE-OS 34 21 866 bekannt. Bei dieser Pumpe ist die Umlenkwand dem Druckschlitz gegenüberliegend als Prallwand für das aus dem Druckschlitz austretende Gas-Flüssigkeitsgemisch ausgebildet. Durch weiter oberhalb und hinter der Umlenkwand angeordnete Wandteile erfolgen weitere scharfe Umlenkungen des Gemischstromes. Bei diesen Umlenkungen erfolgt eine Trennung der spezifisch schwereren Flüssigkeitsteilchen von den Gasteilchen, da die Flüssigkeitsteilchen wegen ihrer größeren Massenträgheit auf die Umlenkwand und die weiteren Wandteile prallen. Die Flüssigkeitsteilchen fließen dann nach unten in die beiden durch die Umlenkwand in dem Seitenschild gebildeten Kammern ab. Die mehrfache Umlenkung des Gemischstromes erfordert einerseits entsprechend angeordnete Wandteile, die zu einer fertigungstechnisch schwierigen Form des Seitenschildes führen und andererseits ergeben sich durch solche scharfen Umlenkungen auch erhebliche Strömungsverluste und erfordern eine große Baulänge.Such a liquid ring pump is known from DE-OS 34 21 866. In this pump, the deflection wall opposite the pressure slot is designed as a baffle for the gas-liquid mixture emerging from the pressure slot. Further sharp deflections of the mixture flow take place through wall parts arranged further above and behind the deflection wall. In the case of these deflections, the specifically heavier liquid particles are separated from the gas particles because the liquid particles strike the deflection wall and the other wall parts because of their greater inertia. The liquid particles then flow down into the two chambers formed by the deflection wall in the side plate. The multiple deflection of the mixture flow requires, on the one hand, appropriately arranged wall parts which lead to a form of the side plate that is difficult to manufacture, and on the other hand, such sharp deflections also result in considerable flow losses and require a large overall length.

Der Erfindung liegt die Aufgabe zugrunde, eine Flüssigkeitsringpumpe gemäß dem Gattungsbegriff des Anspruchs 1 so auszubilden, daß mittels eines fertigungstechnisch einfacher herzustellenden Seitenschildes eine verbesserte Flüssigkeitsabscheidung bei weniger Strömungsverlusten erreicht wird.The invention has for its object to design a liquid ring pump according to the preamble of claim 1 so that an improved liquid separation is achieved with less flow losses by means of a side plate that is easier to manufacture.

Die Lösung der gestellten Aufgabe gelingt nach den kennzeichnenden Merkmalen des Anspruches 1. Eine ähnliche Lösung, bei welcher der Abscheider aber nicht mit dem Seitenschild integriert ist, und zwar für einen Ölabscheider für eine Pumpe mit einem Rotor, der gleichfalls mit Flügeln bestücrt ist, geht übrigens aus der FR-A-2 413 569 hervor. Durch die bogenförmige Umlenkwand wird dem Gemischstrom unter Ausnutzung der kinetischen Energie des aus dem Druckschlitz austretenden Gas-Flüssigkeitsgemisches eine verlustarme Rotationsbewegung erteilt. Durch die dabei auftretende Fliehkraft werden die schwereren Flüssigkeitspartikel gegen die Umlenkwand geschleudert und fließen nach unten ab. Die Gasteilchen können dagegen durch entsprechende Auslaßöffnungen entweichen. Bei einer Zyklonbewegung konzentrieren sich die Gasteilchen zum Zentrum der Umlenkwand hin, so daß die Abführung des von den Flüssigkeitspartikeln befreiten Gases vorteilhafterweise im Zentrum der bogenförmigen Umlenkwand erfolgt. Damit werden die Strömungsverluste besonders niedrig gehalten.The solution to the problem is achieved according to the characterizing features of claim 1. A similar solution, in which the separator is not integrated with the side plate, namely for an oil separator for a pump with a rotor, which is also equipped with vanes incidentally from FR-A-2 413 569. The arcuate deflection wall gives the mixture flow a low-loss rotational movement using the kinetic energy of the gas-liquid mixture emerging from the pressure slot. Due to the centrifugal force that occurs, the heavier liquid particles are thrown against the deflecting wall and flow downwards. In contrast, the gas particles can escape through corresponding outlet openings. During a cyclone movement, the gas particles concentrate towards the center of the deflection wall, so that the gas freed from the liquid particles is advantageously removed in the center of the arcuate deflection wall. This keeps the flow losses particularly low.

Die Rotationsbewegung des Gas-Flüssigkeitsgemisches wird dadurch verbessert, daß die Umlenkwand mit ihrer anderen Seite unter Belassung eines Durchtrittsschlitzes bis nahe an die Steuerscheibe heranreicht oder auch dadurch, daß die Umlenkwand mit ihrer anderen Seite ebenfalls an der Steuerscheibe anliegt.The rotational movement of the gas-liquid mixture is improved in that the other side of the deflecting wall reaches close to the control disk while leaving a passage slot, or else in that the other side of the deflecting wall also abuts the control disk.

Bei einer Flüssigkeitsringpumpe mit einem im Zentrum der kreisbogenförmigen Umlenkwand angeordneten Gas-Auslaß kann vorteilhafterweise auch der Flüssigkeitsablauf in diesem Zentrum angeordnet werden. Dies ist mittels zweier ineinandergefügter Rohre möglich, von denen das innere Rohr das äußere axial überragt. Das innere Rohr dient somit zum Abführen des Gases, wohingegen durch das kürzere äußere Rohr die Flüssigkeit abfließen kann. Die beiden Rohre sind vorteilhafterweise konzentrisch ineinandergefügt.In the case of a liquid ring pump with a gas outlet arranged in the center of the arcuate deflection wall, the liquid outlet can advantageously also be arranged in this center. This is possible by means of two tubes, one inside the other, of which the inner tube extends axially beyond the outer one. The inner tube thus serves to discharge the gas, whereas the liquid can drain through the shorter outer tube. The two tubes are advantageously joined together concentrically.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird der Anmeldungsgegenstand nachfolgend näher beschrieben. Es zeigt:

  • FIG 1 eine Flüssigkeitsringpumpe im waagrechten Schnitt durch deren Seitenschild,
  • FIG 2 eine Flüssigkeitsringpumpe im Schnitt entlang der Linie II-II in FIG 1 in verkleinerter Darstellung,
  • FIG 3 eine mit einem anderen Seitenschild versehene Flüssigkeitsringpumpe im Schnitt durch dieses Seitenschild.
The subject of the application is described in more detail below using an exemplary embodiment shown in the drawing. It shows:
  • 1 shows a liquid ring pump in a horizontal section through its side plate,
  • 2 shows a liquid ring pump in section along the line II-II in FIG. 1 in a reduced representation,
  • 3 shows a liquid ring pump provided with another side plate in section through this side plate.

Mit 1 ist eine Flüssigkeitsringpumpe bezeichnet, deren mit Läuferschaufeln 2 versehener Pumpenläufer 3 im Pumpenraum 4 des Pumpengehäuses 5 gegenüber der Gehäuseachse exzentrisch angeordnet ist. Der Pumpenraum 4 ist zumindest auf einer Seite mittels einer mit einem Saug- und Druckschlitz 6a und 6b versehenen Steuerscheibe 7 verschlossen. Die Steuerscheibe 7 wird von einem am Pumpengehäuse 5 befestigten Seitenschild 8 überdeckt. Im Seitenschild 8 sind bekannterweise durch einen Steg 9 ein Saugraum 10 und ein Druckraum 11 gegeneinander abgegrenzt. In dem im Seitenschild 8 ausgebildeten Druckraum 11 ist eine bogenförmige, vorzugsweise kreisbogenförmige Umlenkwand 12 vorgesehen, die den Druckraum 11 in eine innere und äußere Kammer 13 und 14 unterteilt. Die Umlenkwand 12 ist derart ausgebildet, daß sie mit ihrer einen Seite 15 auf den Druckschlitz 6b der Steuerscheibe zuläuft und mit der Seitenkante 16 dieser Seite 15 an der Steuerscheibe 7 anliegt. Damit weist die Umlenkwand 12 im Anschluß an die Steuerscheibe 7 einen Verlauf auf, der angenähert parallel zu dem in axialer Richtung den Druckschlitz 6b verlassenden Gas-Flüssigkeitsstrom (Pfeil 17) gerichtet ist. Der Gas-Flüssigkeitsstrom wird auf seinem weiteren Weg durch die Umlenkwand 12 in Rotationsbewegung versetzt. Durch die dabei auftretenden Fliehkräfte werden die Flüssigkeitspartikel aus dem Gas-Flüssigkeitsgemisch gegen die Umlenkwand 12 geschleudert und fließen an dieser nach unten ab. Die Gasteilchen bewegen sich dagegen zu einem zwischen dem Ende 18 der anderen Seite 19 der Umlenkwand 12 und der Steuerscheibe 7 bestehenden Durchtrittsschlitz 20 und gelangen über diesen in die äußere Kammer 14.1 designates a liquid ring pump, the pump rotor 3 provided with rotor blades 2 is arranged eccentrically in the pump chamber 4 of the pump housing 5 with respect to the housing axis. The pump chamber 4 is closed at least on one side by means of a control disk 7 provided with a suction and pressure slot 6a and 6b. The control disk 7 is covered by a side plate 8 attached to the pump housing 5. In the side plate 8, a suction chamber 10 and a pressure chamber 11 are known to be delimited from one another by a web 9. In the pressure chamber 11 formed in the side plate 8, an arc-shaped, preferably circular-shaped deflection wall 12 is provided, which divides the pressure chamber 11 into an inner and outer chamber 13 and 14. The deflection wall 12 is designed such that it runs with its one side 15 onto the pressure slot 6b of the control disk and abuts the control disk 7 with the side edge 16 of this side 15. In this way, the deflection wall 12 has a course following the control disk 7 which is approximately parallel to the gas-liquid flow (arrow 17) leaving the pressure slot 6b in the axial direction. The gas-liquid flow is set in rotation on its further path through the deflection wall 12. Due to the centrifugal forces that occur, the liquid particles are thrown out of the gas-liquid mixture against the deflection wall 12 and flow downwards there. The gas particles, on the other hand, move to a passage slot 20 existing between the end 18 of the other side 19 of the deflection wall 12 and the control disk 7 and pass through this into the outer chamber 14.

An dem Seitenschild der in den FIG 1 und 2 dargestellten Flüssigkeitsringpumpe 1 sind ferner ein nach außen führender Druckstutzen 23 für das Gas und ein Ablaufstutzen 24 für die Flüssigkeit vorgesehen. Mit 23′ und 24′ sind andere mögliche Lagen des Druck- und Ablaufstutzens an dem Seitenschild 8 angedeutet.On the side plate of the liquid ring pump 1 shown in FIGS. 1 and 2, an outward pressure connection 23 for the gas and an outlet connection 24 for the liquid are also provided. With 23 'and 24' other possible positions of the pressure and drain connector on the side plate 8 are indicated.

Bei der in FIG 3 dargestellten Flüssigkeitsringpumpe 1 ist in dem Seitenschild 8 durch die Umlenkwand 12 eine nach oben geschlossene innere Kammer 13 gebildet. Als Gas- und Flüssigkeitsauslaß ist im Zentrum, d.h. in der Mittelachse der kreisbogenförmigen Umlenkwand 12 ein aus einem inneren und äußeren Rohr 25 und 26 bestehendes Doppelrohr angeordnet. Das innere Rohr 25 überragt das äußere Rohr 26 in axialer Richtung und bildet den Gasauslaß. Die aus dem Gas-Flüssigkeitsgemisch ausgeschiedene Flüssigkeit kann über das äußere Rohr 26 abfließen. Durch das Ende dieses äußeren Rohres 26 wird das Niveau 27 des Flüssigkeitsspiegels im Seitenschild 8 bestimmt. Bei der in FIG 1 dargestellten Flüssigkeitsringpumpe wird dieses Flüssigkeitsniveau 27 durch die Lage des Ablaufstutzens 24 am Seitenschild 8 bestimmt. Über eine in dem den Saug- und Druckraum 10 und 11 trennenden Steg 9 vorgesehene Öffnung 28 kann die ausgeschiedene Flüssigkeit wieder dem Pumpenkreislauf zugeführt werden.In the liquid ring pump 1 shown in FIG. 3, an upwardly closed inner chamber 13 is formed in the side plate 8 by the deflecting wall 12. As the gas and liquid outlet is in the center, i.e. In the central axis of the circular arc-shaped deflection wall 12, a double pipe consisting of inner and outer pipes 25 and 26 is arranged. The inner tube 25 projects beyond the outer tube 26 in the axial direction and forms the gas outlet. The liquid separated from the gas-liquid mixture can flow off via the outer tube 26. The level 27 of the liquid level in the side plate 8 is determined by the end of this outer tube 26. In the liquid ring pump shown in FIG. 1, this liquid level 27 is determined by the position of the drain connector 24 on the side plate 8. Via an opening 28 provided in the web 9 separating the suction and pressure chambers 10 and 11, the liquid which has separated out can be returned to the pump circuit.

Durch die nach oben geschlossene Ausbildung der inneren Kammer 13 und die Anordnung des Gas- und Flüssigkeitsauslasses (Doppelrohr 25/26) im Zentrum der Umlenkwand 12 ergeben sich nur sehr geringe Strömungsverluste für die Gasteilchen, da diese auf ihrem Weg vom Druckschlitz 6 bis zum Gasauslaß (Rohr 25) die einmal eingeschlagene Rotationsbewegung beibehalten und damit keine weitere, zu Verlusten führende scharfe Umlenkung erfahren.Due to the closed design of the inner chamber 13 and the arrangement of the gas and liquid outlet (double pipe 25/26) in the center of the deflecting wall 12, there are only very small flow losses for the gas particles, as they move from the pressure slot 6 to the gas outlet (Tube 25) maintain the rotational movement once embarked on and thus experience no further sharp deflection which leads to losses.

Die kreisbogenförmige Umlenkwand 12 kann mit dem Ende 18 der anderen Seite 19 bis an die Steuerscheibe 7 herangeführt werden, d.h. auch mit diesem Ende 18 an der Steuerscheibe 7 anliegen, wie dies in FIG 1 gestrichelt angedeutet ist. Damit entfällt der Durchtrittsschlitz 20 und die äußere Kammer 14 wird funktionslos. Der von der Umlenkwand 12 umgrenzte Raum kann somit die gesamte druckseitige Hälfte des Seitenschildes umfassen.The circular arc-shaped deflection wall 12 can be brought up to the control disk 7 with the end 18 of the other side 19, ie it can also rest against the control disk 7 with this end 18, as is indicated by dashed lines in FIG. 1. This eliminates the passage slot 20 and the outer chamber 14 become inoperative. The space delimited by the deflection wall 12 can thus encompass the entire pressure side half of the side plate.

Anstelle des im Zentrum angeordneten Abflusses (Rohr 26) kann auch ein seitlich aus dem Seitenschild herausführender Abflußstutzen vorgesehen werden, entsprechend der Darstellung in FIG 1. Es ist auch eine Kombination der beiden Ausführungsarten der Abflüsse möglich.Instead of the drain arranged in the center (tube 26), a drain connection leading out laterally from the side plate can also be provided, as shown in FIG. 1. It is also possible to combine the two types of drain.

Claims (6)

1. Liquid ring pump with a liquid separator, integrated in the side cover, which has a deflector wall (12) arranged in the vicinity of the side cover (8), in which pump the feed port (6b) provided in the control disc (7) opens into a chamber (13) defined by the deflector wall (12) and the control disc (7), and a liquid outlet (24, 24′, 26) and a gas outlet (23, 23′, 25) are provided on the side cover (8), characterised in that the deflector wall (12) is of curved design so as to produce a cyclonic-type flow movement of the gas-liquid current (arrow 17) emerging from the feed port (6), and with the lateral edge (16) of one side (15) extending axially in the direction (arrow 17) of the emerging gas-liquid flow abuts the control disc (7), and in that at least the gas outlet (25) is arranged in the centre or approximately in the centre of the curved deflector wall (12).
2. Liquid ring pump according to claim 1, characterised in that the deflector wall (12) extends with its other side (19) to a position near the control disc (7), thus forming a slot (20).
3. Liquid ring pump according to claim 1, characterised in that the deflector wall (12) also abuts the control disc (7) with the end (18) of its other side (19).
4. Liquid ring pump acording to claim 1, characterised in that the liquid outlet (26) is also arranged in the centre or approximately in the centre of the curved deflector wall (12).
5. Liquid ring pump according to claim 3 or 4, characterised in that two tubes (25 and 26) are arranged in the centre of the curved deflector wall (12), one held inside the other, opening into the space (13) encircled by the deflector wall (12), the inner tube (25) projecting axially from the outer tube (26).
6. Liquid ring pump according to one or more of the preceding claims, characterised in that the deflector wall (12) is of circular design.
EP89106359A 1989-04-11 1989-04-11 Liquid ring pump with a liquid separator integral with the side cover Expired - Lifetime EP0392034B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT89106359T ATE79445T1 (en) 1989-04-11 1989-04-11 LIQUID RING PUMP WITH A LIQUID SEPARATOR INTEGRATED IN THE SIDE SHIELD.
DE8989106359T DE58902050D1 (en) 1989-04-11 1989-04-11 LIQUID RING PUMP WITH A LIQUID SEPARATOR INTEGRATED IN THE SIDE PLATE.
EP89106359A EP0392034B1 (en) 1989-04-11 1989-04-11 Liquid ring pump with a liquid separator integral with the side cover
US07/500,085 US5009782A (en) 1989-04-11 1990-03-27 Liquid separator integrated into a pressure chamber housing abutting a liquid ring pump
JP1990038467U JPH078863Y2 (en) 1989-04-11 1990-04-09 Liquid ring pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89106359A EP0392034B1 (en) 1989-04-11 1989-04-11 Liquid ring pump with a liquid separator integral with the side cover

Publications (2)

Publication Number Publication Date
EP0392034A1 EP0392034A1 (en) 1990-10-17
EP0392034B1 true EP0392034B1 (en) 1992-08-12

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EP89106359A Expired - Lifetime EP0392034B1 (en) 1989-04-11 1989-04-11 Liquid ring pump with a liquid separator integral with the side cover

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Country Link
US (1) US5009782A (en)
EP (1) EP0392034B1 (en)
JP (1) JPH078863Y2 (en)
AT (1) ATE79445T1 (en)
DE (1) DE58902050D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0759506A1 (en) 1995-08-21 1997-02-26 Siemens Aktiengesellschaft Liquid ring compressor
DE202012005755U1 (en) * 2012-06-12 2013-09-16 Speck Pumpen Vakuumtechnik Gmbh pump unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516994C1 (en) * 1995-05-09 1996-10-17 Siemens Ag Fluid ring machine

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US3393770A (en) * 1965-01-04 1968-07-23 C M Sorensen Co Inc Automatic recycling oiler
GB2012626B (en) * 1977-12-29 1982-04-15 Seiko Instr & Electronics Oil separator
US4392783A (en) * 1980-12-12 1983-07-12 The Nash Engineering Company Liquid ring pump employing discharged pumping liquid for discharge port control
WO1983001491A1 (en) * 1981-10-16 1983-04-28 Roger Boyd Walker Rotary piston compressors and expanders
US4853002A (en) * 1986-04-07 1989-08-01 Exxon Research And Engineering Company Process for removing hydrogen sulfide from waste water

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0759506A1 (en) 1995-08-21 1997-02-26 Siemens Aktiengesellschaft Liquid ring compressor
DE202012005755U1 (en) * 2012-06-12 2013-09-16 Speck Pumpen Vakuumtechnik Gmbh pump unit

Also Published As

Publication number Publication date
JPH078863Y2 (en) 1995-03-06
EP0392034A1 (en) 1990-10-17
DE58902050D1 (en) 1992-09-17
ATE79445T1 (en) 1992-08-15
US5009782A (en) 1991-04-23
JPH0371188U (en) 1991-07-18

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