DE691148C - Centrifugal pump - Google Patents

Centrifugal pump

Info

Publication number
DE691148C
DE691148C DE1937B0179647 DEB0179647D DE691148C DE 691148 C DE691148 C DE 691148C DE 1937B0179647 DE1937B0179647 DE 1937B0179647 DE B0179647 D DEB0179647 D DE B0179647D DE 691148 C DE691148 C DE 691148C
Authority
DE
Germany
Prior art keywords
centrifugal pump
impeller
air
wall
stuffing box
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
Application number
DE1937B0179647
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.)
Eisengiesserei GmbH
Original Assignee
Eisengiesserei GmbH
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 Eisengiesserei GmbH filed Critical Eisengiesserei GmbH
Priority to DE1937B0179647 priority Critical patent/DE691148C/en
Application granted granted Critical
Publication of DE691148C publication Critical patent/DE691148C/en
Expired 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance

Landscapes

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

Description

Fliehkraf tkreiselpumpe Bei Wellenspaltabdichtungen an Kreiselpumpen, besonders solchen zum Fördern von Säuren und Laugen, werden zweckmäßig zur Entlastung der Stopfbuchse vom Förderdruck Rückenschaufeln am Laufrad vorgesehen. Diese bringen jedoch den Nachteil mit sich, daß Luft in den Arbeitsraum gelangen kann. Dies ist aber zumeist aus verschiedenen Gründen sehr unerwünscht.Centrifugal centrifugal pump For shaft gap seals on centrifugal pumps, especially those for pumping acids and alkalis, are useful for relief the stuffing box provided by the delivery pressure back vanes on the impeller. Bring this however, the disadvantage with it that air can get into the work space. This is but mostly very undesirable for various reasons.

Die Erfindung bezweckt, dieses Eindringen von Luft zu verhindern. Zu diesem Zweck sind gemäß der Erfindung die Rückenschaufeln durch einen auf der Rückwand des Laufrades gleichmittig zur Laufradachse angeordneten ringförmigen Quersteg in zwei Stufen unterteilt, und innerhalb des Bereichs der inneren Stufe ist eine durch die Wand des Pumpengehäuses nach außen führende Auslaßöffnung vorgesehen.The invention aims to prevent this ingress of air. For this purpose, the back blades are according to the invention by one on the Rear wall of the impeller equidistant to the impeller axis arranged annular crosspiece divided into two stages, and within the range of the inner stage is one provided through the wall of the pump housing to the outside leading outlet opening.

Bei der in der Zeichnung beispielsweise dargestellten Kreiselpumpe gemäß der Ertindtung erzeugen die Rückenschaufeln, die möglichst dicht bis an die Gehäusewand heranreichen sollen, einen Flüssigkeitsring, der das Austreten von Flüssigkeit durch den Wellenspalt verhindert. Die Flüssigkeit dieses Flüssigkeitsringes wird durch das Laufrad in dem zwischen den Rückenschaufeln und der Gehäusewand gebildeten Spalt ständig im Irreis mit herumgeschleppt. Dabei wird durch die Stopfbuchse Luft angesaugt und mitgerissen, die schließlich in den Arbeitsraum der Pumpe gelangt. Durch den ringförmigen Quersteg a, der in eine entsprechende Aussparung der Gehäusewand eingreift, entstehen zwei Stufen. Wenn sich nun in der inneren Stufe c1 durch Ansaugen von Luft durch die Stopfbuchse ein Flüssigkeits-Luft-Gemisch bildet, so wird dieses durch die Auslaßöffnung b nach außen abgeleitet und zweckmäßig in den Zulaufbeh:älter zurückgeführt. Die äußere Stufe c. wird dadurch immer mit luftfreier Flüssigkeit voll gefüllt bleiben. über den Quersteg a wird keine Luft von der inneren zur äußeren Stufe mitgerissen werden und somit auch keine Luft in den Arbeitsraum eindringen.In the centrifugal pump shown in the drawing, for example According to the invention, the back blades produce as close as possible to the The housing wall should reach a liquid ring that prevents liquid from escaping prevented by the shaft gap. The liquid of this liquid ring is by the impeller in the one formed between the back blades and the casing wall Split constantly dragged around in the wrong direction. In doing so, air is drawn through the stuffing box sucked in and carried away, which finally gets into the working space of the pump. Through the annular transverse web a, which is in a corresponding recess in the housing wall intervenes, there are two stages. If now in the inner stage c1 by suction of air forms a liquid-air mixture through the stuffing box, this becomes discharged to the outside through the outlet opening b and expediently into the inlet container: older returned. The outer stage c. is thus always with air-free liquid stay full. There is no air from the inner to the outer via the crosspiece a Step are entrained and therefore no air can penetrate into the work area.

Claims (1)

PATENTANSPRUCH. Fliehkraftkreiselpumpe mit . Rückenschaufeln zur Entlastung der Stopfbuchse vom Förderdruck, dadurch gekennzeichnet, daß die Rückenschaufeln (c) durch einen auf der Rückwand des Laufrades gleichmittig zur Laufradachse angeordneten ringförmigen Quersteg (a) in zwei Stufen (cl. e.,) unterteilt sind und innerhalb des Bereichs der inneren Stufe (cl) eine durch die Wand des Pumpengehäuses nach außen führende Auslaßöffnung (b) vorgesehen ist.PATENT CLAIM. Centrifugal pump with. Back scoops for relief the stuffing box from the delivery pressure, characterized in that the back blades (c) by one arranged on the rear wall of the impeller equidistant to the impeller axis annular transverse web (a) are divided into two stages (cl. e.,) and within of the area of the inner step (cl) one through the wall of the pump housing outside leading outlet opening (b) is provided.
DE1937B0179647 1937-08-20 1937-08-20 Centrifugal pump Expired DE691148C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1937B0179647 DE691148C (en) 1937-08-20 1937-08-20 Centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1937B0179647 DE691148C (en) 1937-08-20 1937-08-20 Centrifugal pump

Publications (1)

Publication Number Publication Date
DE691148C true DE691148C (en) 1940-05-17

Family

ID=7008675

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937B0179647 Expired DE691148C (en) 1937-08-20 1937-08-20 Centrifugal pump

Country Status (1)

Country Link
DE (1) DE691148C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023671B (en) * 1954-10-25 1958-01-30 Josef Eisele Centrifugal pump for conveying liquid manure u. Like. With a coupling and decoupling ventilation pump
US2890660A (en) * 1953-05-26 1959-06-16 Ajem Lab Inc Non-clogging centrifugal pump
DE1062119B (en) * 1957-10-19 1959-07-23 Paul Bungartz Auxiliary conveyor for sealing the shaft gap of centrifugal pumps, agitators, etc. like
US3246874A (en) * 1965-02-15 1966-04-19 Dominion Eng Works Ltd Overspeed limiting device for hydraulic machines
US4613281A (en) * 1984-03-08 1986-09-23 Goulds Pumps, Incorporated Hydrodynamic seal
EP0288500A1 (en) * 1986-10-07 1988-11-02 Warman Int Ltd Impellers for centrifugal pumps.
US4842479A (en) * 1981-01-29 1989-06-27 Vaughan Co., Inc. High head centrifugal slicing slurry pump
US5076757A (en) * 1981-01-29 1991-12-31 Vaughan Co., Inc. High head centrifugal slicing slurry pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890660A (en) * 1953-05-26 1959-06-16 Ajem Lab Inc Non-clogging centrifugal pump
DE1023671B (en) * 1954-10-25 1958-01-30 Josef Eisele Centrifugal pump for conveying liquid manure u. Like. With a coupling and decoupling ventilation pump
DE1062119B (en) * 1957-10-19 1959-07-23 Paul Bungartz Auxiliary conveyor for sealing the shaft gap of centrifugal pumps, agitators, etc. like
US3246874A (en) * 1965-02-15 1966-04-19 Dominion Eng Works Ltd Overspeed limiting device for hydraulic machines
US4842479A (en) * 1981-01-29 1989-06-27 Vaughan Co., Inc. High head centrifugal slicing slurry pump
US5076757A (en) * 1981-01-29 1991-12-31 Vaughan Co., Inc. High head centrifugal slicing slurry pump
US4613281A (en) * 1984-03-08 1986-09-23 Goulds Pumps, Incorporated Hydrodynamic seal
EP0288500A1 (en) * 1986-10-07 1988-11-02 Warman Int Ltd Impellers for centrifugal pumps.
EP0288500A4 (en) * 1986-10-07 1988-11-24 Warman Int Ltd Impellers for centrifugal pumps.

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