EP1066472B1 - Liquid ring pump - Google Patents

Liquid ring pump Download PDF

Info

Publication number
EP1066472B1
EP1066472B1 EP99920544A EP99920544A EP1066472B1 EP 1066472 B1 EP1066472 B1 EP 1066472B1 EP 99920544 A EP99920544 A EP 99920544A EP 99920544 A EP99920544 A EP 99920544A EP 1066472 B1 EP1066472 B1 EP 1066472B1
Authority
EP
European Patent Office
Prior art keywords
valve plate
liquid ring
pump
pump cover
ring 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
Application number
EP99920544A
Other languages
German (de)
French (fr)
Other versions
EP1066472A1 (en
Inventor
Rudi Dittmar
Jürgen KRINES
Robert Seufert
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
Original Assignee
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
Publication of EP1066472A1 publication Critical patent/EP1066472A1/en
Application granted granted Critical
Publication of EP1066472B1 publication Critical patent/EP1066472B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
    • 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 according to the preamble of claim 1.
  • a generic liquid ring pump is from DE 91 06 151.2 known. This liquid ring pump is one Catch plate connected to a side plate to limit the stop and the valve plate is through between the catch plate and the control disk arranged elements fixed.
  • JP-A-62 218 684 describes a limit stop for a Valve plate in a rotary ring compressor.
  • a disadvantage here is the rather cumbersome assembly of catch plate and valve plate, the material effort for Realization of the valve arrangement and increased wear the valve plate.
  • the object of the invention is to design a liquid ring pump of the generic type that the valve plate during assembly and maintenance work much easier and cheaper in front of the pressure openings is to be attached.
  • Another object of the invention is the arrangement "Valve plate mounting catch plate” cheaper execute and show signs of wear on the valve plate to reduce.
  • One-piece plates are suitable as valve plates, Finger plates or other common in this type of pump Valve assemblies.
  • the drawing shows a schematically represented pressure chamber 6 a liquid ring pump, not shown, the has two pressure openings 7 in a control disc 2 which are covered by a valve plate 1.
  • the valve plate 1 is through a in a rubber buffer 5 and a bore 8th the control disc 2 fixed pin 4, which as a molded plastic part is carried out.
  • This pin 4 points in the part located in the rubber buffer 5 is rounded Pin head 9 on.
  • This pin head 9 is through a recess 10 fixed in the rubber buffer 5. Due to an undersize of the recess of the rubber buffer 5 with respect to the spatial expansion the pin head 9 is an additional fixation of the Valve arrangement reached.
  • the pin 4 points to its other End of a kind of free rotation 11 or notch of the pen shaft 12 on. This means that assembly is also easier.
  • the rubber buffer 5 is in a cast contour 13 of the the part of a pump cover 14 forming the limit stop fixed by gluing or pressing.
  • An exchange of the valve plate 1 is significantly simplified.
  • a ramp-like molded-on shape 15 of the pump cover 14 also serves as a limit stop for valve plate 1.
  • the valve plate 1 gives according to the prevailing operating conditions one or more pressure openings 7 free.
  • valve plate 1 An axial displacement of the valve plate with respect to the pin axis 1 on the pin 4 or a sleeve between the control disc 2 and the rubber buffer 5 is excluded. In order to the valve plate 1 can neither jam nor jam. It is therefore proper operation of the liquid ring pump guaranteed.
  • the liquid ring pump can also be used without a defined one Limit stop of the valve plate 1 are executed.
  • the guide elements of the valve plate 1 can directly via a possibly rubber buffer 5 into the pump cover 14 intervention.
  • This insertion groove can both directly on the control disc 2, as well as on other pump parts 14 forming the pressure chamber 6 be placed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Check Valves (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

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

Eine gattungsgemäße Flüssigkeitsringpumpe ist aus der DE 91 06 151.2 bekannt. Bei dieser Flüssigkeitsringpumpe ist eine Fangplatte zur Anschlagbegrenzung mit einem Seitenschild verbunden und die Ventilplatte ist durch zwischen der Fangplatte und der Steuerscheibe angeordnete Elemente fixiert.A generic liquid ring pump is from DE 91 06 151.2 known. This liquid ring pump is one Catch plate connected to a side plate to limit the stop and the valve plate is through between the catch plate and the control disk arranged elements fixed.

Die JP-A-62 218 684 beschreibt eine Anschlagbegrenzung einer Ventilplatte in einem Kreisringverdichter.JP-A-62 218 684 describes a limit stop for a Valve plate in a rotary ring compressor.

Nachteilig dabei ist jeweils die recht umständliche Montage von Fangplatte und Ventilplatte, der materielle Aufwand zur Realisierung der Ventilanordnung und ein erhöhter Verschleiß der Ventilplatte.A disadvantage here is the rather cumbersome assembly of catch plate and valve plate, the material effort for Realization of the valve arrangement and increased wear the valve plate.

Ausgehend davon, liegt der Erfindung die Aufgabe zugrunde, eine Flüssigkeitsringpumpe der gattungsgemäßen Art so zu gestalten, daß die Ventilplatte bei Montage- und Wartungsarbeiten wesentlich einfacher und kostengünstiger vor den Drucköffnungen anzubringen ist.Proceeding from this, the object of the invention is to design a liquid ring pump of the generic type that the valve plate during assembly and maintenance work much easier and cheaper in front of the pressure openings is to be attached.

Eine weitere Aufgabe der Erfindung besteht darin, die Anordnung "Ventilplatte-Befestigung-Fangplatte" kostengünstiger auszuführen und dabei Verschleißerscheinungen der Ventilplatte zu reduzieren.Another object of the invention is the arrangement "Valve plate mounting catch plate" cheaper execute and show signs of wear on the valve plate to reduce.

Die Lösung der gestellten Aufgabe gelingt durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale. The task is solved by the in the license plate of claim 1 specified features.

Dadurch, daß eine Anschlagbegrenzung der Ventilplatte bereits in den Pumpendeckel im Bereich der Drucköffnungen eingegossen ist, entfällt die zusätzliche Montage einer Fangplatte. Durch eine oder mehrere Öffnung der Ventilplatte ragen Führungselemente, die durch Eingriff in Ausnehmungen oder Bohrungen der Steuerscheibe und/oder in Ausnehmungen oder Bohrungen des Pumpendeckels die Ventilplatte fixieren. Durch einen in der eingegossenen Anschlagbegrenzung eingesetzten Gummipuffers, der ebenso zur Aufnahme des Führungselementes geeignet ist, reduziert sich der Verschleiß der beschriebenen Anordnung. Während des Betriebs der Flüssigkeitsringpumpe tritt aufgrund der wiederholten Auf- und Zubewegungen der Ventilplatte Reibung zwischen der Ventilplatte und dem Führungselement auf, die aber aufgrund ähnlicher Materialien von Ventilplatte und Führungselement eine vorzeitige Abnutzung der Ventilplatte verhindern. Außerdem können durch Verwendung eines derartigen Gummipuffer herstellungsbedingte Toleranzunterschiede während der Montage oder Wartung mühelos ausgeglichen werden, was sowohl die Herstellung als auch die Montage von Ersatzteilen wesentlich erleichtert und vereinfacht. Damit reduzieren sich auch die Betriebsstillstandszeiten derartiger Flüssigkeitsringpumpen.The fact that a limit stop of the valve plate already poured into the pump cover in the area of the pressure openings the additional installation of a catch plate is not necessary. By one or more openings of the valve plate protrude guide elements, by engaging in recesses or holes in the Control disc and / or in recesses or bores of the Secure the valve cover to the valve plate. By one in the molded-in limit stop used rubber buffer, which is also suitable for receiving the guide element, the wear of the arrangement described is reduced. Occurs during the operation of the liquid ring pump the repeated movements of the valve plate friction between the valve plate and the guide element, but due to similar materials of valve plate and Guide element premature wear of the valve plate prevent. In addition, by using such a Rubber buffers tolerance differences during manufacture assembly or maintenance can be easily compensated for, both the manufacture and assembly of spare parts much easier and simplified. This will reduce itself also the downtimes of such liquid ring pumps.

Verschleißerscheinungen werden aufgrund der eingesetzten Werkstoffe wie Kunststoff- oder Gummiteile, wie in einer weiteren Ausgestaltung der Erfindung beschrieben, stark reduziert. Als Ventilplatten eignen sich einstückige Platten, Fingerplatten oder andere bei dieser Pumpengattung übliche Ventilanordnungen.Signs of wear are used due to the Materials such as plastic or rubber parts, as in another Embodiment of the invention described, greatly reduced. One-piece plates are suitable as valve plates, Finger plates or other common in this type of pump Valve assemblies.

Anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels wird der Anmeldungsgegenstand nachfolgend näher beschrieben.Using an exemplary embodiment shown schematically in the drawing the subject of the application is below described in more detail.

Die Zeichnung zeigt einen schematisch dargestellten Druckraum 6 einer nicht näher dargestellten Flüssigkeitsringpumpe, die zwei Drucköffnungen 7 in einer Steuerscheibe 2 aufweist, die durch eine Ventilplatte 1 abgedeckt sind. Die Ventilplatte 1 ist durch einen in einem Gummipuffer 5 und einer Bohrung 8 der Steuerscheibe 2 fixierten Stift 4, der als Kunststoffformteil ausgeführt ist, gehalten. Dieser Stift 4 weist in dem im Gummipuffer 5 befindlichen Teil einen rundlichen Stiftkopf 9 auf. Dieser Stiftkopf 9 wird durch eine Ausnehmung 10 im Gummipuffer 5 fixiert. Durch ein Untermaß der Ausnehmung des Gummipuffers 5 gegenüber der räumlichen Ausdehnung des Stiftkopfes 9 wird eine zusätzliche Fixierung der Ventilanordnung erreicht. Der Stift 4 weist an seinem anderen Ende eine Art Freidrehung 11 oder Einkerbung des Stiftschaftes 12 auf. Dadurch wird u.a. die Montage zusätzlich erleichtert. Der Gummipuffer 5 ist in einer gegossenen Kontur 13 des die Anschlagbegrenzung bildenden Teils eines Pumpendeckels 14 durch Klebung oder Pressung fixiert. Ein Austausch der Ventilplatte 1 wird dadurch wesentlich vereinfacht. Eine rampenähnliche angegossene Ausformung 15 des Pumpendeckels 14 dient zugleich als Anschlagbegrenzung für die Ventilplatte 1. Die Ventilplatte 1 gibt nach den jeweils vorliegenden Betriebsverhältnissen eine oder mehrere Drucköffnungen 7 frei.The drawing shows a schematically represented pressure chamber 6 a liquid ring pump, not shown, the has two pressure openings 7 in a control disc 2 which are covered by a valve plate 1. The valve plate 1 is through a in a rubber buffer 5 and a bore 8th the control disc 2 fixed pin 4, which as a molded plastic part is carried out. This pin 4 points in the part located in the rubber buffer 5 is rounded Pin head 9 on. This pin head 9 is through a recess 10 fixed in the rubber buffer 5. Due to an undersize of the recess of the rubber buffer 5 with respect to the spatial expansion the pin head 9 is an additional fixation of the Valve arrangement reached. The pin 4 points to its other End of a kind of free rotation 11 or notch of the pen shaft 12 on. This means that assembly is also easier. The rubber buffer 5 is in a cast contour 13 of the the part of a pump cover 14 forming the limit stop fixed by gluing or pressing. An exchange of the valve plate 1 is significantly simplified. A ramp-like molded-on shape 15 of the pump cover 14 also serves as a limit stop for valve plate 1. The valve plate 1 gives according to the prevailing operating conditions one or more pressure openings 7 free.

Eine bezüglich der Stiftachse axiale Verschiebung der Ventilplatte 1 auf dem Stift 4 oder einer Hülse zwischen der Steuerscheibe 2 und dem Gummipuffer 5 ist ausgeschlossen. Damit kann sich die Ventilplatte 1 weder verkanten noch verklemmen. Es ist somit ein ordnungsgemäßer Betrieb der Flüssigkeitsringpumpe garantiert.An axial displacement of the valve plate with respect to the pin axis 1 on the pin 4 or a sleeve between the control disc 2 and the rubber buffer 5 is excluded. In order to the valve plate 1 can neither jam nor jam. It is therefore proper operation of the liquid ring pump guaranteed.

Die Flüssigkeitsringpumpe kann prinzipiell auch ohne definierte Anschlagbegrenzung der Ventilplatte 1 ausgeführt werden. Dabei können die Führungselemente der Ventilplatte 1 direkt über einen evtl. Gummipuffer 5 in den Pumpendeckel 14 eingreifen. Die Lebensdauer der Ventilplatte 1, insbesondere bei einer Ausführungsform der Ventilplatte 1 in Teflon reduziert sich aufgrund des fehlenden definierten Anschlags der Ventilplatte 1 in außergewöhnlichem Maße. In principle, the liquid ring pump can also be used without a defined one Limit stop of the valve plate 1 are executed. The guide elements of the valve plate 1 can directly via a possibly rubber buffer 5 into the pump cover 14 intervention. The life of the valve plate 1, in particular reduced in one embodiment of the valve plate 1 in Teflon due to the lack of a defined stop Valve plate 1 in exceptional dimensions.

Vorstellbar ist außerdem eine derartige Anschlagbegrenzung in einen dementsprechend gestalteten Gummipuffer 5 zu integrieren, der somit Anschlag der Ventilplatte 1 und Befestigung derselben in sich vereint.Such a limit stop is also conceivable in to integrate a rubber buffer 5 designed accordingly, the stop of the valve plate 1 and attachment the same united.

Zur Befestigung der Ventilplatte 1 im Bereich der Drucköffnungen 7 der Steuerscheibe 2 eignet sich auch eine nicht dargestellte Einstecknut mit ev. widerhakenähnlichen Ausgestaltungen.For fastening the valve plate 1 in the area of the pressure openings 7 of the control disk 2 is also suitable, not shown Insert groove with possibly barb-like designs.

Diese Einstecknut kann sowohl direkt an der Steuerscheibe 2, als auch an anderen den Druckraum 6 bildenden Pumpenteilen 14 plaziert sein.This insertion groove can both directly on the control disc 2, as well as on other pump parts 14 forming the pressure chamber 6 be placed.

Claims (3)

  1. Liquid ring pump having:
    a) an impeller which rotates in an operating-chamber housing,
    b) a cam disc (2) which has at least one suction opening and at least one pressure opening (7) and shuts off a side of the operating-chamber housing,
    c) at least one valve plate (1) that can be raised and which covers at least one portion of the pressure openings (7),
    d) a stop-limitation (15) pertaining to the valve plate (1),
    e) a pump cover (14) which covers the cam disc (2) and at least one suction chamber and at least one pressure chamber (6),
    f) at least one guiding element (4) which fixes the valve plate (1) on the pump cover (14) and/or on the cam disc (2),
    characterized in that
    g) the pump cover (14) has stop-limitation means (15) for the valve plate (1),
    h) there is at least one guiding element (4) which projects through at least one opening of the valve plate (1).
  2. Liquid ring pump according to claim 1, characterized in that the guiding element (4) is constructed as a shaped plastics portion which fixes the valve plate (1) by engagement in recesses of the cam disc (2) and/or the pump cover (14).
  3. Liquid ring pump according to claim 1 or 2, characterized in that the stop-limitation for the valve plate (1) is constructed as a protrusion (15) that extends obliquely in relation to the pump axis and which is cast onto the pump cover (14) in a ramp-like manner.
EP99920544A 1998-03-24 1999-03-11 Liquid ring pump Expired - Lifetime EP1066472B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29805345U DE29805345U1 (en) 1998-03-24 1998-03-24 Liquid ring pump
DE29805345U 1998-03-24
PCT/DE1999/000679 WO1999049221A1 (en) 1998-03-24 1999-03-11 Liquid ring pump

Publications (2)

Publication Number Publication Date
EP1066472A1 EP1066472A1 (en) 2001-01-10
EP1066472B1 true EP1066472B1 (en) 2002-06-05

Family

ID=8054702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99920544A Expired - Lifetime EP1066472B1 (en) 1998-03-24 1999-03-11 Liquid ring pump

Country Status (3)

Country Link
EP (1) EP1066472B1 (en)
DE (1) DE29805345U1 (en)
WO (1) WO1999049221A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114294229A (en) * 2022-01-04 2022-04-08 淄博市产品质量检验研究院 Water ring vacuum pump circulating water automatic regulating apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH553332A (en) 1972-06-13 1974-08-30 Burckhardt Ag Maschf DEVICE FOR REGULATING THE WORKING MEDIUM PRESSURE IN A LIQUID RING PUMP.
JPS62218684A (en) * 1986-03-19 1987-09-26 Matsushita Electric Ind Co Ltd Discharge valve device of enclosed rotary compressor
DE9106151U1 (en) 1991-05-17 1992-09-17 Siemens AG, 8000 München Liquid ring pump
DE4118934C2 (en) * 1991-06-08 2001-04-05 Bosch Gmbh Robert compressor

Also Published As

Publication number Publication date
WO1999049221A1 (en) 1999-09-30
EP1066472A1 (en) 2001-01-10
DE29805345U1 (en) 1998-08-06

Similar Documents

Publication Publication Date Title
DE69825089T2 (en) Improvements to disc brakes
DE69202966T2 (en) Safety valve.
DE102004017722A1 (en) Adapter for pivotally connecting a wiper blade to a wiper arm
DE2431425C2 (en) Tensioning rail for chain drives
EP2028299B1 (en) Opening roller with clip connector
EP0510138A1 (en) Partially lined disc brake and brake pad.
DE102008048206A1 (en) Tool revolver, particularly for machine tools, comprises tool disk which rotates around revolving axis, where multiple tool stations are distributed along disk circumference, and blade of receiver is supported at seat face
DE102009013412A1 (en) Device on a card for cotton, chemical fibers o. The like., In which at least one flat bar is provided with a flat fitting
DE212006000058U1 (en) Handling tool for glazing
DE4332275A1 (en) Control disc for a liquid ring gas pump
EP1249310B1 (en) Holding disc for flap grinding wheel
DE60102885T2 (en) Wear-resistant fuel pump
DE19520050C2 (en) Disc brake
EP1066472B1 (en) Liquid ring pump
EP3539776A1 (en) Seal element
DE3318078C2 (en) Sealing unit for pumps
DE10019819A1 (en) Pump housing esp. for circulation pump for household machines consists of separate upper and lower sections with intermediate sealing ring loaded in radial direction
DE3910969C2 (en) Part-pad disc brake
DE2800948C2 (en) Mechanical seal
DE3527357C2 (en)
DE3814234C2 (en)
DE102004048683B4 (en) Valve
DE19500542B4 (en) Rotary pump
DE3719520A1 (en) AXIAL PISTON MACHINE WITH A CYLINDRUM DRUM AND A CONTROL BODY
EP1955286B1 (en) Tachograph for a motor vehicle

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: 20000825

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): IT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

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

17Q First examination report despatched

Effective date: 20011010

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): IT

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

Effective date: 20030306

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050311