EP0333391B1 - Flügelzellenpumpe - Google Patents

Flügelzellenpumpe Download PDF

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Publication number
EP0333391B1
EP0333391B1 EP19890302398 EP89302398A EP0333391B1 EP 0333391 B1 EP0333391 B1 EP 0333391B1 EP 19890302398 EP19890302398 EP 19890302398 EP 89302398 A EP89302398 A EP 89302398A EP 0333391 B1 EP0333391 B1 EP 0333391B1
Authority
EP
European Patent Office
Prior art keywords
pump
vane
vanes
wheel
rotation axis
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
EP19890302398
Other languages
English (en)
French (fr)
Other versions
EP0333391A2 (de
EP0333391A3 (en
Inventor
Freddy Sorensen
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.)
J S Maskinfabrik AS
Original Assignee
J S Maskinfabrik AS
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
Priority claimed from DK144188A external-priority patent/DK169769B1/da
Priority claimed from DK657488A external-priority patent/DK657488D0/da
Application filed by J S Maskinfabrik AS filed Critical J S Maskinfabrik AS
Priority to AT89302398T priority Critical patent/ATE89893T1/de
Publication of EP0333391A2 publication Critical patent/EP0333391A2/de
Publication of EP0333391A3 publication Critical patent/EP0333391A3/en
Application granted granted Critical
Publication of EP0333391B1 publication Critical patent/EP0333391B1/de
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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation

Definitions

  • the present invention relates to a vane pump for working with relatively low rotary speed, which pump consists of a pump housing (with an inlet port and an outlet port), where in said pump housing is fitted a rotatable seated pump wheel with its rotation axis placed eccentric in relation to the interior of the pump housing.
  • the pump wheel is equipped with two radially slidable vanes, which vanes may be movable in relation to the pump wheel between two extreme positions dependent on the shape and siting internally in the pump housing of the parts designed to support the edges of the vanes.
  • the vanes each stretch diametrically through the pump wheel and are essentially at right-angles to one another.
  • the parts guiding the vane edges are shaped as to define circular arc-sections of travel for the vane edges with centre in the rotation axis of the wheel in at least one section between the inlet port and the outlet port.
  • the said section covers an angle of at least 90° as seen parallel to the rotation axis.
  • low rotary speed is meant that the pump wheel during normal operation makes less than 100 revolutions per minute.
  • highly viscous mediums can be pumped and the possibility of high pump pressure is created at the same time as the gentle treatment of the pump medium in such a slowly rotating positive-displacement pump with great internal volume is retained.
  • the aim of this present invention is to produce a rotating positive-displacement type pump of the above-mentioned kind, which compared to the known pumps is more suitable for pumping mediums with low viscosity.
  • a pump of the type described in the introduction to claim 1 but being distinctive in that the circular arc-shaped section and, at least the adjoining and toward the rotation axis extended surfaces inside the pump housing, are mainly coated with a relatively flexible material, for example plastic or rubber material.
  • a relatively flexible material for example plastic or rubber material.
  • US patent 1,943,561 discloses a blade for use as a vane i rotary pumps.
  • the radially facing edge of the blade sweeping the inner parts of the pump housing is shaped as a separate part to be fixed removably on the blade, thus avoiding change of the whole vane because of wear.
  • the removable vane edges can be made shock-absorbent by means of a shock-absorbing liner, the purpose being to counteract hard particles in the pumping medium.
  • the liner can thus act as a compression spring so the vane edges are always held pressed against the bars or surfaces along which the vane edges slide.
  • a preferred embodiment of the pump according to this invention has a mounting flange or foot 1, whereon a cast pump housing 3 is fixed.
  • the pump housing 3 has a rectangularly shaped, radially directed inlet 5, a tangential directed outlet 7 and an internal form like a cylinder.
  • covers 9 are mounted by screws, on which covers 9 bearing housings 11 are eccentrically mounted, the housings 11 being closed with end covers 13 and 14.
  • the pump has a pump wheel 15 which in this embodiment consists of two end pieces 17 and 19 and a middle piece 21. As shown on fig. 1 this middle piece 21 is divided into four quarter parts. All three pieces 17, 19, 21 are made of a solid material and are mutually connected with screws, the fitting screw holes 23 being shown on fig. 1.
  • the end pieces 17 and 19 are made in one piece with an axle journal 25 and a drive axle 27, respectively, both of which rest in bearings 29 in the bearing housings 11.
  • a hole in the cover 14 allows passage of the drive axle 27 which is driven by a not shown hydraulic motor.
  • packings 31 are fitted to prevent the pump medium leaving the pump housing 3, and packings 33 and 35 are fitted to protect the bearings 29.
  • Each vane 37 is thus cut oute of a solid sheet in a U-shape with a cut-out 41 which stretches from the one side edge 43 of the vane to a depth a little over half the width of the vane.
  • the radially facing edges 45 of the vanes are fitted with detachable pieces 47 fixed with counter-sunk screws 48 to the web of the vane 37.
  • a flexible liner 49 which for example may be of solid rubber and shaped as shown on fig. 5.
  • Replaceable wear irons 39 control the vanes in the wheel 15, the rotation axis 51 of which is in a first plane of symmetry 53 to the pump housing's interior and at a distance from a second plane of symmetry 55.
  • the vane's 37 position in relation to the wheel 15 is controlled by rails 57, the surfaces of which have three different radiuses of curvature. The smallest radius is determined by the radiuses of end pieces 17 and 19, as these lie close up against bars 57 in area 59. The remaining radiuses and sitings of the rail surfaces in areas 61 and 63 are determined by area 59, as the height and rotation axis siting of the vanes determines these.
  • area 63 a semi-cylindrical curve is formed, with its centre in rotation axis 51 and in area 61 the curve is fixed as a transition between areas 59 and 61.
  • this deflector 66 keeps impurities from wedging themselves between the rotor 15 and the surface 59 and supports packing 65, all at the same time.
  • elements 65 stretch over a circular arc a little larger than 90°, at the same time the middle section 21 of the rotor, which has a little larger diameter than the end pieces 17 and 19, always lies up against the corresponding element 65 in area 59.
  • the pump can pump water with greater difference pressure over the pump, even at rotary speeds less than 70 rpm.
  • the low rotary speed of the pump and resulting gentle treatment of the pump medium particularly prove their worth when one wants to transport floculated waste water without spoiling the floculated lumps of solid material in the water.
  • the pump may as shown by the stippled line on fig. 1 be equipped with a knife 71 which stretches across inlet 5.
  • the knife 71 is provided with an edge 73 of hardened steel; this edge is placed between bars 57 close to the track created by vane edges 45 during the movement of the wheel 15. If, for example, a piece of rib gets stuck between vane edge 45 and the knife edge 73 this will simply be cut over.
  • packings 65 and 68 can be dispensed with, as a gap of a few hundredths of a millimeter between surfaces 59, 63, 69 and vane edges 45 is adequate to maintain the pump outlet pressure.
  • the robust and simple construction obtained with the pump according to this invention is also useful in other areas, for example, for transporting highly viscous liquids and liquids which are difficult to handle.
  • the pump construction can thus withstand heating, a property which can be utilized when pumping raw oil in refineries.

Landscapes

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

Claims (2)

  1. Flügelzellenpumpe zum Betrieb mit vergleichsweise niedriger Drehgeschwindigkeit, mit einem Pumpengehäuse (3), das eine Einlaßöffnung (5) und eine Auslaßöffnung (7) aufweist und in dem ein drehbares Pumpenrad (15) angeordnet ist, dessen Drehachse (51) exzentrisch zum inneren Umriß des Pumpengehäuses (3) ist und das mit zwei Schiebern (37) versehen ist, die in Radialrichtung des Pumpenrads (15) verschieblich und zwischen zwei Extremlagen beweglich sind, die von der Form und Lage von Führungsmitteln (57) für die radialen Dichtkanten (45) der Schieber (37) abhängen, und bei der sich die Schieber (37) jeweils diametral durch das Pumpenrad (15) erstrecken und im wesentlichen im rechten Winkel zueinander angeordnet sind und die Führungsmittel (57) für die Schieberdichtkanten (45) so ausgebildet sind, daß sie kreisbogenförmige Wege mit Mittelpunkt in der Drehachse (51) des Pumpenrads (15) für die Schieberdichtkanten (45) auf wenigstens einem Teilstück zwischen der Einlaßöffnung (5) und der Auslaßöffnung (7) bilden, wobei das Teilstück einen Winkel von wenigstens 90° - parallel zur Drehachse (51) gesehen - überdeckt, dadurch gekennzeichnet, daß das kreisbogenförmige Teilstück oder die Teilstücke (59 und 63) und wenigstens die daran angrenzenden, sich in Richtung auf die Drehachse (51) erstreckenden Oberflächen im Inneren des Pumpengehäuses (3) größtenteils mit einer Beschichtung (65, 68) aus einem relativ flexiblen Werkstoff bedeckt sind.
  2. Flügelzellenpumpe nach Anspruch 1, worin der Körper (17, 19, 21) des Pumpenrads (15) Zylinderform hat und zwei kreisbogenförmige Teilstücke vorgesehen sind, die als zylindrische Flächen (59, 63) ausgebildet sind, wobei die kleinste zylindrische Fläche (59) den gleichen oder annähernd den gleichen Radius hat wie die zylindrische Außenfläche des Pumpenrads (15) und wobei jede radiale Dichtfläche (45) eines Schiebers (37) von einem oder mehreren entfernbaren und fixierten Teilen (47) gebildet wird und wobei zwischen den entfernbaren, fixierten Teilen (47) und dem Steg der Schieber (37) ein stoßabsorbierendes Futterstück (49) aus einem relativ flexiblen Werkstoff angeordnet ist.
EP19890302398 1988-03-16 1989-03-10 Flügelzellenpumpe Expired - Lifetime EP0333391B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89302398T ATE89893T1 (de) 1988-03-16 1989-03-10 Fluegelzellenpumpe.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DK144188A DK169769B1 (da) 1988-03-16 1988-03-16 Fortrængningspumpe samt anvendelse af denne
DK1441/88 1988-03-16
DK6574/88 1988-11-25
DK657488A DK657488D0 (da) 1988-11-25 1988-11-25 Lamelpumpe

Publications (3)

Publication Number Publication Date
EP0333391A2 EP0333391A2 (de) 1989-09-20
EP0333391A3 EP0333391A3 (en) 1990-01-17
EP0333391B1 true EP0333391B1 (de) 1993-05-26

Family

ID=26065754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890302398 Expired - Lifetime EP0333391B1 (de) 1988-03-16 1989-03-10 Flügelzellenpumpe

Country Status (2)

Country Link
EP (1) EP0333391B1 (de)
DE (1) DE68906693D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000035514A1 (en) * 1998-12-15 2000-06-22 Bjoerk Gunnar Anders A pumping arrangement

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993008403A1 (en) * 1991-10-25 1993-04-29 Southern Group Limited Vane pump
ATE201746T1 (de) * 1993-10-01 2001-06-15 William Wesley Martin Volumetrische pumpe
FR2757575B1 (fr) * 1996-12-24 1999-03-26 Atochem Elf Sa Pompe a palettes pour le transfert d'un fluide inflammable et en particulier un gaz liquefie
AUPO580397A0 (en) * 1997-03-24 1997-04-17 Baker Medical Research Institute Positive displacement pump
GB2389875A (en) * 2002-06-21 2003-12-24 Boc Group Plc Vane pump with a non-circular bore
JP4352957B2 (ja) * 2004-03-23 2009-10-28 ブラザー工業株式会社 ポンプ及びこのポンプを備えたインクジェットプリンタ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR386967A (fr) * 1907-04-25 1908-06-27 Jean Nepomucene Hochgesand Dispositif pouvant etre utilisé comme pompe ou moteur rotatif
US1943561A (en) 1932-07-06 1934-01-16 Nat Transit Pump & Machine Com Blade for rotary pumps
US2495771A (en) * 1945-10-15 1950-01-31 Richer Ella Diametrically cooperating vane pump
DE1043230B (de) 1956-03-31 1958-11-06 Egyesuelt Izzolampa Hydraulische Maschine
FR2504609B1 (fr) * 1981-04-27 1986-11-21 Sulzer Ag Palette destinee a equiper un dispositif hydraulique rotatif
US4561834A (en) * 1983-07-13 1985-12-31 Poss Design Limited Rotary vaned pumps with fixed length and shearing knife-edged vanes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000035514A1 (en) * 1998-12-15 2000-06-22 Bjoerk Gunnar Anders A pumping arrangement

Also Published As

Publication number Publication date
EP0333391A2 (de) 1989-09-20
EP0333391A3 (en) 1990-01-17
DE68906693D1 (en) 1993-07-01

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