EP0993552B1 - Liquid ring pump - Google Patents

Liquid ring pump Download PDF

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Publication number
EP0993552B1
EP0993552B1 EP98936207A EP98936207A EP0993552B1 EP 0993552 B1 EP0993552 B1 EP 0993552B1 EP 98936207 A EP98936207 A EP 98936207A EP 98936207 A EP98936207 A EP 98936207A EP 0993552 B1 EP0993552 B1 EP 0993552B1
Authority
EP
European Patent Office
Prior art keywords
impeller
liquid ring
ring pump
drive shaft
exchange
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
EP98936207A
Other languages
German (de)
French (fr)
Other versions
EP0993552A1 (en
Inventor
Rudi Dittmar
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.)
Gardner Denver Elmo Technology GmbH
Original Assignee
Nash Elmo Industries GmbH
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Filing date
Publication date
Application filed by Nash Elmo Industries GmbH filed Critical Nash Elmo Industries GmbH
Publication of EP0993552A1 publication Critical patent/EP0993552A1/en
Application granted granted Critical
Publication of EP0993552B1 publication Critical patent/EP0993552B1/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
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/005—Details concerning the admission or discharge
    • F04C19/007—Port members in the form of side plates

Definitions

  • the invention relates to a liquid ring pump, consisting of from at least one drive unit having a drive shaft and at least one work area housing with one circulating in it, located on the drive shaft Impeller, and at least one control disc with passages for operating fluid exchange and for ventilation, as well Suction and pressure openings.
  • each is a one-sided cantilever Impeller in which the gap adjustment and the axial attachment done by a screw.
  • column settings are very useful for assembly and repair work elaborate and complicated, and there is also a special tool required.
  • the object of the invention is the process of Axial column adjustment both during assembly and at Simplify repairs.
  • the invention is based on a drawing of a mini liquid ring vacuum pump explained in more detail.
  • the drawing shows in longitudinal section a liquid ring pump 12 with a on a drive shaft 3 of a drive unit, not shown located impeller 1 and its substantially cylindrical Hub 2.
  • Parallel to Drive shaft 3 are located in the hub of impeller 1 continuous axial parallel bores 6.
  • control disc 8 and impeller 1 as well as between the rear of the pump housing 5 and impeller 1 are the axial column S1 or S2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Description

Die Erfindung betrifft eine Flüssigkeitsringpumpe, bestehend aus mindestens einer eine Antriebswelle aufweisenden Antriebseinheit und mindestens einem Arbeitsraumgehäuse mit einem darin umlaufenden, auf der Antriebswelle befindlichen Laufrad, und mindestens einer Steuerscheibe mit Durchlässen zum Betriebsflüssigkeitsaustausch und zur Belüftung, als auch Saug- und Drucköffnungen.The invention relates to a liquid ring pump, consisting of from at least one drive unit having a drive shaft and at least one work area housing with one circulating in it, located on the drive shaft Impeller, and at least one control disc with passages for operating fluid exchange and for ventilation, as well Suction and pressure openings.

Bei den bisher bekannten Flüssigkeitsringpumpen, die z.B. in der EP 0 517 277 A1 und der EP 0 645 521 A1 beschrieben sind, handelt es sich jeweils um ein einseitig fliegend gelagertes Laufrad, bei dem die Spalteinstellung und die axiale Befestigung durch eine Schraube erfolgt. Diese Spalteinstellungen gestalten sich bei Montage und Reparaturarbeiten als sehr aufwendig und kompliziert, außerdem ist dafür Spezialwerkzeug erforderlich.In the previously known liquid ring pumps, e.g. in EP 0 517 277 A1 and EP 0 645 521 A1 are described, each is a one-sided cantilever Impeller in which the gap adjustment and the axial attachment done by a screw. These column settings are very useful for assembly and repair work elaborate and complicated, and there is also a special tool required.

Aus der DE 316044 C ist eine Flüssigkeitsringpumpe bekannt, deren Laufrad auf der Antriebswelle während des Betriebs axial verschiebbar ist, wodurch eine selbsttätige axiale Spalteinstellung erfolgt.From DE 316044 C a liquid ring pump is known their impeller on the drive shaft during operation is axially displaceable, whereby an automatic axial Column setting is done.

Die Aufgabe der Erfindung besteht darin, den Vorgang der Axialspalteneinstellung sowohl bei der Montage als auch bei Reparaturen zu vereinfachen.The object of the invention is the process of Axial column adjustment both during assembly and at Simplify repairs.

Die Lösung der gestellten Aufgabe gelingt dadurch, daß bei einer Flüssigkeitsringpumpe, deren Laufrad auf der Antriebswelle und innerhalb des Arbeitsraumgehäuses auch während des Betriebs axial frei beweglich ist, in der Steuerscheibe im Bereich der Stirnseite der Antriebswelle ein Durchlaß zum Betriebsflüssigkeitsaustausch vorgesehen ist. Bei Betrieb der Pumpe stellt sich aufgrund der hydraulischen Verhältnisse der Axialspalt zwischen Steuerscheibe und Laufrad, sowie zwischen Laufrad und Pumpenrückseite selbständig ein. Diese hydraulischen Druckverhältnisse stellen sich ein, sobald der Betriebsflüssigkeitsaustausch über die Durchlässe der Steuerscheibe in Form von Bohrungen oder ringförmigen Ausschnitten gegenüber der Stirnseite der Antriebswelle erfolgt.The solution to the problem is achieved in that a liquid ring pump, the impeller on the drive shaft and within the work area housing also during the Operating axially is freely movable in the control disc In the area of the end face of the drive shaft, a passage for the exchange of operating fluid is provided. When operating the Pump turns due to the hydraulic conditions of the Axial gap between control disc and impeller, and between Impeller and rear of pump on independently. This hydraulic Pressure conditions occur as soon as the operating fluid exchange through the passages of the control disc in the form of bores or ring-shaped cutouts opposite the face of the drive shaft.

Die Erfindung wird anhand einer Zeichnung einer Mini-Flüssigkeitsring-Vakuumpumpe näher erläutert. Die Zeichnung zeigt im Längsschnitt eine Flüssigkeitsringpumpe 12 mit einem auf einer Antriebswelle 3 einer nicht dargestellten Antriebseinheit befindlichen Laufrad 1 und dessen im wesentlichen zylindrischen Nabe 2.The invention is based on a drawing of a mini liquid ring vacuum pump explained in more detail. The drawing shows in longitudinal section a liquid ring pump 12 with a on a drive shaft 3 of a drive unit, not shown located impeller 1 and its substantially cylindrical Hub 2.

Gegenüber der Stirnseite 4 der Antriebswelle 3 ist ein Durchlaß 10 in einer Steuerscheibe 8 und einem Pumpendeckel 9 für einen Betriebsflüssigkeitsaustausch angeordnet. Parallel zur Antriebswelle 3 befinden sich in der Nabe des Laufrades 1 durchgängige axiale parallele Bohrungen 6. Zwischen Steuerscheibe 8 und Laufrad 1, als auch zwischen Rückseite des Pumpengehäuses 5 und Laufrad 1 befinden sich die axialen Spalte S1 bzw. S2.Opposite the end face 4 of the drive shaft 3 is a passage 10 in a control disc 8 and a pump cover 9 for arranged an operating fluid exchange. Parallel to Drive shaft 3 are located in the hub of impeller 1 continuous axial parallel bores 6. Between control disc 8 and impeller 1, as well as between the rear of the pump housing 5 and impeller 1 are the axial column S1 or S2.

Diese Spalten S1 und S2 stellen sich konstruktionsbedingt bei Betrieb dieser Flüssigkeitsringpumpe 12 aufgrund der hydraulischen Druckverhältnisse selbständig ein. In beiden Spalten S1 und S2 bilden sich aufgrund des axial beweglichen Laufrades 1 hydraulische Polster, so daß eine axiale Befestigung ausreicht. Eventuelle Rückstände der Betriebsflüssigkeit, z.B. Kalk, der zur Spaltverengung und zur Blockierung des Laufrades 1 führt, kann durch Kanten der Schaufeln 13 des Laufrades oder der Durchlässe 6 abgetragen werden. Zusätzliche kantenbildende Vertiefungen in Form von Sacklöchern oder radialen Nuten im Bereich der Nabe des Laufrades 1 verstärken diesen abbauenden Effekt.These columns S1 and S2 are due to the design Operation of this liquid ring pump 12 due to the hydraulic Pressure conditions independently. In both columns S1 and S2 are formed due to the axially movable impeller 1 hydraulic cushion, so that an axial attachment sufficient. Any residues of the operating fluid, e.g. Lime, which narrows the gap and blocks the Impeller 1 leads can by edges of the blades 13 of the Impeller or the passages 6 are removed. additional edge-forming depressions in the form of blind holes or reinforce radial grooves in the area of the hub of the impeller 1 this degrading effect.

Alle in der Beschreibung erwähnten und/oder in der Zeichnung dargestellten neuen Merkmale allein und/oder in sinnvoller Kombination, sind erfindungswesentlich, auch soweit sie den Ansprüchen nicht ausdrücklich entnommen werden können.All mentioned in the description and / or in the drawing presented new features alone and / or in more meaningful Combination are essential to the invention, also in so far as they are Claims cannot be expressly removed.

Claims (5)

  1. Liquid ring pump (12), comprising
    a) at least one drive unit, having a drive shaf t (3),
    b) at least one working space housing with an impeller (1) rotating therein and located on the drive shaft,
    c) at least one disc cam (8) with passages for the exchange of operating fluid and for venting, as well as suction and pressure openings,
    d) the impeller (1) being axially freely movable on the drive shaf t (3) and within the working space housing during operation,
    characterized in that
    e) the disc cam (8) has in the region of the front face of the drive shaft a passage for the exchange of operating fluid (10).
  2. Liquid ring pump (12) according to Claim 1, characterized in that the shaft-hub connection between the drive shaft (3) and the impel ler (1) is a po lygonal or feather key connection.
  3. Liquid ring pump (12) according to Claim 1 or 2, characterized in that the impeller hub (2) has a virtually cylindrical cross section.
  4. Liquid ring pump (12) according to Claim 3, characterized in that the passage (10) in the disc cam (8) for the exchange of operating f luid is made in the form of an annular cutout or bore hole.
  5. Liquid ring pump according to one of the preceding claims, characterized in that the impeller (1) has at least one axially parallel bore hole (6) or at least one opening (6) in the region of the hub (2) of the impeller (1).
EP98936207A 1997-06-30 1998-06-17 Liquid ring pump Expired - Lifetime EP0993552B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19727719A DE19727719C1 (en) 1997-06-30 1997-06-30 Rotary fluid pump for miniature vacuum pump
DE19727719 1997-06-30
PCT/DE1998/001664 WO1999001668A1 (en) 1997-06-30 1998-06-17 Liquid ring pump

Publications (2)

Publication Number Publication Date
EP0993552A1 EP0993552A1 (en) 2000-04-19
EP0993552B1 true EP0993552B1 (en) 2004-01-07

Family

ID=7834066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98936207A Expired - Lifetime EP0993552B1 (en) 1997-06-30 1998-06-17 Liquid ring pump

Country Status (6)

Country Link
US (1) US6287082B1 (en)
EP (1) EP0993552B1 (en)
JP (1) JP2000512363A (en)
CN (1) CN1080836C (en)
DE (2) DE19727719C1 (en)
WO (1) WO1999001668A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812976C2 (en) * 1998-03-24 2000-05-04 Siemens Ag Liquid ring compressor
DE19911683A1 (en) * 1999-03-09 2000-09-21 Hielscher Gmbh Ultrasonic sonotrode, grips tip resiliently for e.g. welding, cutting or spot welding, avoiding conventional clamping screw which causes losses and overheating
DE19913632C2 (en) * 1999-03-25 2001-02-08 Siemens Ag Liquid ring pump
US20040202549A1 (en) * 2003-01-17 2004-10-14 Barton Russell H. Liquid ring pump
US7948110B2 (en) * 2007-02-13 2011-05-24 Ken Morgan Wind-driven electricity generation device with Savonius rotor
US8864440B2 (en) 2010-11-15 2014-10-21 Sauer Energy, Incc. Wind sail turbine
US8905704B2 (en) 2010-11-15 2014-12-09 Sauer Energy, Inc. Wind sail turbine
CN115263756B (en) * 2022-09-05 2024-04-26 兰州理工大学 High-efficiency liquid ring vacuum pump

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE316044C (en)
US3744942A (en) 1971-07-16 1973-07-10 Borg Warner Rotary sliding vane compressor with hydrostatic bearings
DE3111538A1 (en) * 1981-03-24 1982-10-21 Siemens AG, 1000 Berlin und 8000 München LIQUID RING PUMP WITH A CONTROL DISC ARRANGED BETWEEN THE IMPELL WHEEL HOUSING AND THE LID PROVIDED WITH CONNECTORS
US5197863A (en) * 1990-12-28 1993-03-30 The Nash Engineering Company Bearing fluid distribution systems for liquid ring pumps with rotating lobe liners
US5100300A (en) * 1990-12-28 1992-03-31 The Nash Engineering Company Liquid ring pumps having rotating lobe liners with end walls
DE9106151U1 (en) * 1991-05-17 1992-09-17 Siemens AG, 8000 München Liquid ring pump
DE4118844A1 (en) * 1991-06-07 1992-12-10 Sihi Gmbh & Co Kg LIQUID RING GAS PUMP WITH FLY BEARING WHEEL
DE4123938A1 (en) 1991-07-19 1993-01-21 Friedrich Gugel Liquid ring vacuum pump - has pressure medium fed directly to slide ring seal chamber and vane chamber
DE4332275A1 (en) * 1993-09-23 1995-03-30 Sihi Gmbh & Co Kg Control disc for a liquid ring gas pump

Also Published As

Publication number Publication date
DE59810554D1 (en) 2004-02-12
CN1080836C (en) 2002-03-13
JP2000512363A (en) 2000-09-19
US6287082B1 (en) 2001-09-11
DE19727719C1 (en) 1998-06-25
EP0993552A1 (en) 2000-04-19
WO1999001668A1 (en) 1999-01-14
CN1249802A (en) 2000-04-05

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