DE1096205B - Centrifugal pump with auxiliary conveyor wheel - Google Patents

Centrifugal pump with auxiliary conveyor wheel

Info

Publication number
DE1096205B
DE1096205B DEB47630A DEB0047630A DE1096205B DE 1096205 B DE1096205 B DE 1096205B DE B47630 A DEB47630 A DE B47630A DE B0047630 A DEB0047630 A DE B0047630A DE 1096205 B DE1096205 B DE 1096205B
Authority
DE
Germany
Prior art keywords
conveyor wheel
centrifugal pump
auxiliary
auxiliary conveyor
wheel
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.)
Pending
Application number
DEB47630A
Other languages
German (de)
Inventor
Paul Bungartz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEB47630A priority Critical patent/DE1096205B/en
Publication of DE1096205B publication Critical patent/DE1096205B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • F04D29/108—Shaft sealings especially adapted for liquid pumps the sealing fluid being other than the working liquid or being the working liquid treated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Kreiselpumpe mit Hilfsförderrad Vorliegende Erfindung bezieht sich auf eine Kreiselpumpe mit einem zwischen dem Pumpenraum und dem Wellenspalt in einer Kammer angeordneten Hilfsförderrad zur Entlastung des Wellenspaltes. Pumpen dieser Art werden im wesentlichen verwendet, um eine hydraulisch wirkende Wellenspaltabdichtung oder Druckentlastung des Wellenspaltes bei hohem Zulaufdruck zu erreichen.Centrifugal Pump with Auxiliary Impeller The present invention relates on a centrifugal pump with one between the pump chamber and the shaft gap in one Chamber arranged auxiliary conveyor wheel to relieve the shaft gap. Pumping this Art are essentially used to seal a hydraulically acting shaft gap or to achieve pressure relief of the shaft gap at high inlet pressure.

Besonders bei großem Zulaufdruck wird der vom Hilfsförderrad erzeugte Axialschub durch die größere Druckdifferenz auf der Vorder- und Rückseite des Hilfsförderrades groß.The pressure generated by the auxiliary feed wheel is particularly high when the inlet pressure is high Axial thrust due to the greater pressure difference on the front and back of the auxiliary conveyor wheel great.

Bei bekannten Pumpen dieser Art wird dieser vom Hilfsförderrad bewirkte Axialschub teilweise ausgeglichen, indem der rückseitige Ringspalt des Förderrades im Durchmesser gegenüber dem vorderen Ringspalt kleiner ausgeführt wird.In known pumps of this type, this is effected by the auxiliary impeller Axial thrust partially compensated by the rear annular gap of the conveyor wheel is made smaller in diameter compared to the front annular gap.

Durch diese Maßnahme kann aber nur ein Teil von dem Axialschub ausgeglichen werden, den das Hilfsförderrad durch die auf der Vorder- und Rückseite auftretende Druckdifferenz erzeugt.However, only part of the axial thrust can be compensated for by this measure that the auxiliary conveyor wheel through the occurring on the front and back Pressure difference generated.

Entsprechend der Erfindung sind daher Maßnahmen vorgesehen, um die Druckdifferenz an der Vorder- und Rückseite des Hilfsförderrades auszugleichen, indem beispielsweise durch Anordnung von Kanälen, die durch das Hilfsförderrad hindurchgehen, ein Druckausgleich in der Hilfsradkammer auf der Vorder- und Rückseite des Hilfsförderrades bewirkt wird.According to the invention measures are therefore provided to the Compensate for the pressure difference on the front and back of the auxiliary conveyor wheel, by, for example, by arranging channels that go through the auxiliary feed wheel, a pressure equalization in the auxiliary wheel chamber on the front and back of the auxiliary conveyor wheel is effected.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.An exemplary embodiment of the invention is shown in the drawing.

Im Hilfsförderrad a. sind Kanäle b angeordnet, die die Räume d, e vor und hinter dem Hilfsförderrad in der Kammer c verbinden, so daß sich vor und hinter dem Hilfsförderrad der gleiche Druck einstellt. Durch diesen Druckausgleich wird auch der Axialschub, den das Hilfsförderrad infolge der auf der Vorder- und Rückseite auftretenden Druckdifferenzen sonst erzeugt, verhindert, so daß besondere :Maßnahmen am Förderrad für einen Axialschubausgleich vermieden werden und außerdem ein vollkommener Axialschubausgleich bewirkt wird, der allein durch das Förderrad nicht erreicht werden kann.In the auxiliary feed wheel a. channels b are arranged which connect the spaces d, e in front of and behind the auxiliary conveyor wheel in the chamber c, so that the same pressure is established in front of and behind the auxiliary conveyor wheel. This pressure equalization also prevents the axial thrust that the auxiliary conveyor wheel would otherwise generate as a result of the pressure differences occurring on the front and rear, so that special measures on the conveyor wheel for axial thrust equalization are avoided and, moreover, a complete axial thrust equalization is achieved, which is achieved solely by the Conveyor wheel cannot be reached.

Claims (2)

PATENTANSPRÜCHE: 1. Kreiselpumpe mit einem Hilfsförderrad zur Abdichtung des Wellenspaltes, welches in einer Kammer zwischen dem Wellenspalt und dem Pumpenraum angeordnet ist, dadurch gekennzeichnet, daß die Räume (d, e) vor und hinter dem Hilfsförderrad (a) zur Druckentlastung durch Kanäle miteinander verbunden sind. PATENT CLAIMS: 1. Centrifugal pump with an auxiliary impeller for sealing the shaft gap, which is arranged in a chamber between the shaft gap and the pump chamber, characterized in that the spaces (d, e) in front of and behind the auxiliary impeller (a) for pressure relief through channels with one another are connected. 2. Kreiselpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Kanäle durch Bohrungen (b), die durch das Hilfsförderrad hindurchgehen, gebildet sind. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 378 091, 302 169, 202 042; französische Patentschrift Nr. 862 062.2. Centrifugal pump according to claim 1, characterized in that the channels are through bores (b) passing through the auxiliary feed wheel are formed. Considered Publications: German Patent Specifications No. 378 091, 302 169, 202 042; french Patent No. 862 062.
DEB47630A 1958-01-30 1958-01-30 Centrifugal pump with auxiliary conveyor wheel Pending DE1096205B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB47630A DE1096205B (en) 1958-01-30 1958-01-30 Centrifugal pump with auxiliary conveyor wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB47630A DE1096205B (en) 1958-01-30 1958-01-30 Centrifugal pump with auxiliary conveyor wheel

Publications (1)

Publication Number Publication Date
DE1096205B true DE1096205B (en) 1960-12-29

Family

ID=6968321

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB47630A Pending DE1096205B (en) 1958-01-30 1958-01-30 Centrifugal pump with auxiliary conveyor wheel

Country Status (1)

Country Link
DE (1) DE1096205B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119517A1 (en) * 1983-03-02 1984-09-26 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Dishwashing machine with alternated supply of the rotating collectors

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202042C (en) *
DE302169C (en) *
DE378091C (en) * 1921-12-03 1923-07-10 Carl Stupp Centrifugal fluid seal for rotating machines
FR862062A (en) * 1939-01-10 1941-02-26 Improvements to centrifugal pumps

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202042C (en) *
DE302169C (en) *
DE378091C (en) * 1921-12-03 1923-07-10 Carl Stupp Centrifugal fluid seal for rotating machines
FR862062A (en) * 1939-01-10 1941-02-26 Improvements to centrifugal pumps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119517A1 (en) * 1983-03-02 1984-09-26 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Dishwashing machine with alternated supply of the rotating collectors

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