EP0010268A1 - Pompe, notamment pompe de lubrification, à cylindre et piston rotatifs - Google Patents

Pompe, notamment pompe de lubrification, à cylindre et piston rotatifs Download PDF

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Publication number
EP0010268A1
EP0010268A1 EP79103934A EP79103934A EP0010268A1 EP 0010268 A1 EP0010268 A1 EP 0010268A1 EP 79103934 A EP79103934 A EP 79103934A EP 79103934 A EP79103934 A EP 79103934A EP 0010268 A1 EP0010268 A1 EP 0010268A1
Authority
EP
European Patent Office
Prior art keywords
axis
piston
cylinder body
rotation
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.)
Withdrawn
Application number
EP79103934A
Other languages
German (de)
English (en)
Inventor
Lajos Dipl.-Ing. Pasztirák
Lászlo Dipl.-Ing. Révész
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.)
Hajtomuevek Es Festoberendezesek Gyara
Original Assignee
Hajtomuevek Es Festoberendezesek Gyara
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 Hajtomuevek Es Festoberendezesek Gyara filed Critical Hajtomuevek Es Festoberendezesek Gyara
Publication of EP0010268A1 publication Critical patent/EP0010268A1/fr
Withdrawn legal-status Critical Current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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/113—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the inner ends of the cylinders
    • F04B1/1133—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the inner ends of the cylinders with rotary cylinder blocks
    • F04B1/1136—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the inner ends of the cylinders with rotary cylinder blocks with a rotary cylinder with a single piston reciprocating within the cylinder

Definitions

  • the invention relates to a rotary cylinder piston pump, in particular a lubricant pump, with a cylinder body which is rotatably mounted in the pump housing about an axis of rotation fixed to the housing and which is driven by a drive shaft running parallel to its axis of rotation and in which a piston is guided perpendicular to its axis of rotation in a working space , which is mounted on a bolt running parallel to the axis of rotation of the cylinder body, which runs eccentrically to the axis of the drive shaft and on which the piston is driven so that it can move back and forth in the working space when the cylinder rotates.
  • Such a rotary cylinder piston pump is known from DE-PS 421 648.
  • the drive shaft is arranged eccentrically to the axis of rotation of the cylinder body and drives a disk on which two diametrically opposed bolts are seated, one of which bolts rotatably engages in a cylindrical bore of the piston, which forms the working chamber of the pump , is slidably guided diametrically over an end face of the cylinder body extending first guide groove.
  • the other bolt on the other hand, slidably engages in a second guide groove crossing the first guide groove in the same end face of the cylinder body.
  • the cylinder body and, on the other hand, the piston are each driven by one of two bolts which are eccentric to one Rotate the axis of rotation of the cylinder body running axis, which coincides with the axis of the drive shaft.
  • the invention provides a rotary cylinder piston pump which is subject to less wear in comparison with the known pump mentioned and can be operated at a higher speed in a compact design.
  • the rotary cylinder piston pump according to the invention can thus be designed in a small size and compact design.
  • the cylinder body can be neatly supported and stored essentially over its entire circumferential surface in a correspondingly designed interior of the pump housing, and its rotating mass is balanced with respect to the drive shaft except for the lower rotating mass of the piston.
  • the piston which carries out a transplantation movement, there are only parts which are stationary or driven in an exclusively rotating movement, the invention making do with a minimal number of parts which can move relative to one another.
  • the rotary cylinder piston pump according to the invention is therefore subject to little wear, runs relatively smoothly and can nevertheless be operated even at high speeds.
  • the working space guiding the piston for its back and forth movement can, as in the known solution mentioned at the outset, also be designed in the solution according to the invention as a groove which is open towards one end of the cylinder body and which is closed on the open groove side by a stationary end cover of the housing .
  • a groove which is open towards one end of the cylinder body and which is closed on the open groove side by a stationary end cover of the housing .
  • the translatory movement of the piston overlaps with its circular movement and there is an increased risk of wear at this point, and because such an embodiment must also have additional sealing surfaces with relatively narrow tolerances at the parting plane between the stationary end cover and the rotating cylinder body
  • an embodiment is preferred in which the working space is enclosed on the entire circumference by the cylinder body and the bolt passes through a bore of the same which is formed concentrically with the axis of rotation of the cylinder body.
  • the piston is thus completely enclosed inside the cylinder body and is guided in a purely translational movement over the entire circumference.
  • the two pump chambers are thereby well sealed on both sides via the circumferential surfaces of the cylinder body and the bearing surfaces of the housing which cooperate with them.
  • the piston and correspondingly the working space guiding it can be made cylindrical, which is less complex to manufacture than other cross sections, which are also possible per se.
  • the pin that moves the piston back and forth as a part that is stationary during operation of the pump, it is also possible in a simple manner to make the piston stroke adjustable.
  • the bolt is seated on a slide which is adjustable perpendicular to the axis of rotation of the cylinder body and which can be guided, for example, in a corresponding guide groove in the pump housing and can be adjusted via a screw spindle, which is preferably equipped with a fine thread.
  • an essentially cylindrical interior 2 is formed on one end face of a housing cover 5, in which a cylinder body 4 is rotatably mounted, which can be pushed back and forth perpendicularly to its axis of rotation by a cylindrical bore as a working space 6 for one therein guided, cylindrical piston 7 is penetrated.
  • the drive shaft 8 which is integral with the cylinder body 4 and is designed as a shaft journal, extends out of the pump housing 1 coaxially with the cylinder body 4.
  • a bolt 9 which runs parallel to the axis of rotation of the cylinder body but is offset by the eccentricity e, which is formed through a bore 10 formed coaxially to the axis of rotation of the cylinder body 4 at its front end facing the cylinder cover 5 and diametrically through the working space 6 protrudes through in the cylinder body 4.
  • the piston 7 is mounted on this pin 9, which for this purpose passes through an elongated hole 11 in the piston 7 which runs perpendicular to the pin axis and to the piston axis and slidably abuts the long sides of the elongated hole 11.
  • an inlet chamber 3 and an outlet chamber 20 are formed crescent-shaped in the interior 2 of the housing 1 at diametrically opposite locations, the width of which, measured perpendicular to the plane of the drawing in FIG. 2, can correspond to the diameter of the piston 7 and into each of which a threaded bore 12 opens into which screw nipples can be screwed for the supply or discharge of the pressure medium conveyed by the pump.
  • the cylinder body 4 and in it the piston 7 are set in rotation, but which is held on the stationary pin 9, so that it ge by its eccentricity Compared to the axis of rotation of the cylinder body 4 moves back and forth in the working space 6 of the cylinder body 4 and each time it overflows the inlet chamber with one and the other of its ends, the pressure medium sucks in and pushes out the pressure medium when the outlet chamber 20 overflows. It is therefore a double-acting piston.
  • the bolt 9 is seated on a slide 13, which is adjustably guided in a corresponding groove 19 in the housing cover 5 perpendicular to the axis of rotation of the cylinder body 4.
  • a screw 14 engages in the thread of a threaded hole in the slide, which is rotatable on a slotted plate 15 fixed on the outside of the housing 1, but is axially fixed, so that by means of the actuating head 16 of the screw 14 the slide 13 and thus the one Bolts 9 seated to adjust the eccentricity e and thus the piston stroke can be infinitely adjusted.
  • the embodiment from FIG. 3 corresponds to that from FIGS. 1 and 2, as can be seen from the corresponding reference symbols of the same name.
  • the greatest length of the elongated hole 11 corresponds to twice the value of the greatest eccentricity e increased by the diameter of the part of the bolt 9 engaging in the elongated hole 11.
  • the diameter of the cylindrical bore 10 corresponds to at least twice the value of the greatest possible eccentricity e increased by the diameter of the Bore 10 penetrating part of the bolt 9.
  • the shank part passing through the bore 10 can be designed as a cylindrical shaft arranged concentrically with the cylinder body 7, the diameter of that of the bore 10 corresponds so that the cylindrical shaft is rotatably supported in the bore 10 (not shown).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP79103934A 1978-10-17 1979-10-12 Pompe, notamment pompe de lubrification, à cylindre et piston rotatifs Withdrawn EP0010268A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HUHA001069 1978-10-17
HUHA001069 1978-10-17

Publications (1)

Publication Number Publication Date
EP0010268A1 true EP0010268A1 (fr) 1980-04-30

Family

ID=10996995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103934A Withdrawn EP0010268A1 (fr) 1978-10-17 1979-10-12 Pompe, notamment pompe de lubrification, à cylindre et piston rotatifs

Country Status (3)

Country Link
EP (1) EP0010268A1 (fr)
DE (1) DE2941469A1 (fr)
GB (1) GB2034809A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000247A1 (fr) * 1985-07-09 1987-01-15 Peter Stillhart Pompe a piston rotatif
FR2773853A1 (fr) * 1998-01-21 1999-07-23 Francis Villeneuve Dispositif de pompage
WO2000011321A1 (fr) * 1998-08-19 2000-03-02 Young Bok Lee Pompe rotative a piston
DE102010034896B3 (de) * 2010-08-16 2011-07-28 Alke, Knut, 37520 Hydraulikpumpe, Getriebe daraus und Fahrzeug mit dem Getriebe
CN109538434A (zh) * 2018-12-21 2019-03-29 浙江普莱得电器有限公司 一种柱塞式泵体和清洗机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8606712D0 (en) * 1986-03-19 1986-04-23 Wilkinson P Reciprotary pump
GB2290583B (en) * 1994-06-24 1998-01-14 Peter Robin Wilkinson Pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB112953A (en) * 1917-04-12 1918-02-07 Charles Ernest Oliver Improvements in or relating to Pumps.
DE890308C (de) * 1940-12-11 1953-09-17 Julius Pintsch K G Kolbenpumpe mit einem in einem Gehaeuse rotierenden Kolbentraeger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB112953A (en) * 1917-04-12 1918-02-07 Charles Ernest Oliver Improvements in or relating to Pumps.
DE890308C (de) * 1940-12-11 1953-09-17 Julius Pintsch K G Kolbenpumpe mit einem in einem Gehaeuse rotierenden Kolbentraeger

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000247A1 (fr) * 1985-07-09 1987-01-15 Peter Stillhart Pompe a piston rotatif
FR2773853A1 (fr) * 1998-01-21 1999-07-23 Francis Villeneuve Dispositif de pompage
WO2000011321A1 (fr) * 1998-08-19 2000-03-02 Young Bok Lee Pompe rotative a piston
DE102010034896B3 (de) * 2010-08-16 2011-07-28 Alke, Knut, 37520 Hydraulikpumpe, Getriebe daraus und Fahrzeug mit dem Getriebe
DE202011104581U1 (de) 2010-08-16 2011-11-23 Knut Alke Hydraulikpumpe,Getriebe daraus und Fahrzeug mit dem Getriebe
CN109538434A (zh) * 2018-12-21 2019-03-29 浙江普莱得电器有限公司 一种柱塞式泵体和清洗机

Also Published As

Publication number Publication date
GB2034809A (en) 1980-06-11
DE2941469A1 (de) 1980-04-30

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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

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820609

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PASZTIRAK, LAJOS, DIPL.-ING.

Inventor name: REVESZ, LASZLO, DIPL.-ING.