EP0010268A1 - Pump, particularly lubrication pump, with rotating cylinder and piston - Google Patents

Pump, particularly lubrication pump, with rotating cylinder and piston 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
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EP
European Patent Office
Prior art keywords
axis
piston
cylinder body
rotation
pump
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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.)
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Application number
EP79103934A
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German (de)
French (fr)
Inventor
Lajos Dipl.-Ing. Pasztirák
Lászlo Dipl.-Ing. Révész
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Hajtomuevek Es Festoberendezesek Gyara
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Hajtomuevek Es Festoberendezesek Gyara
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Publication of EP0010268A1 publication Critical patent/EP0010268A1/en
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    • 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).

Abstract

A rotary cylinder piston pump has a rotatable cylindrical body (4) secured to a reciprocating piston (7) by way of a bolt held stationarily in the pump casing (1) and engaging in a slot (11) in the piston (7) which slot is larger than the diameter of the bolt (9). A drive shaft (8) provides drive for the cylindrical body (4) but the axes of the drive shaft (8) and of the bolt (9) are offset by a predetermined amount (e). The internal wall of the pump casing (1) has an inlet opening and an outlet opening for the medium to be pumped, these openings being successively uncovered and covered by the reciprocating piston (7). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Rotationszylinder-Kolbenpumpe, insbesondere Schmiermitttelpumpe, mit einem im Pumpengehäuse um eine gehäusefeste Drehachse drehbar gelagerten Zylinderkörper, der von einer parallel zu seiner Drehachse verlaufenden Antriebswelle angetrieben ist und in welchem senkrecht zu seiner Drehachse in einem Arbeitsraum ein Kolben geführt ist, der auf einem parallel zur Drehachse des Zylinderkörpers verlaufenden Bolzen gelagert ist, der exzentrisch zur Achse der Antriebswelle verläuft und an dem der Kolben bei der Umdrehung des Zylinders in dem Arbeitsraum hin und her verschiebbar angetrieben ist.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.

Eine derartige Rotationszylinder-Kolbenpumpe ist aus der DE-PS 421 648 bekannt. Bei der bekannten Pumpe ist die Antriebswelle exzentrisch zu der Drehachse des Zylinderkörpers angeordnet und treibt eine Scheibe an, an welcher zwei diametral gegenüberliegende Bolzen sitzen, von denen der eine Bolzen in eine zylindrische Bohrung des Kolbens drehbar eingreift, der in einer den Arbeitsraum der Pumpe bildenden, diametral über die eine Stirnfläche des Zylinderkörpers verlaufenden ersten Führungsnut verschiebbar geführt ist. Der andere Bolzen hingegen greift in eine die erste Führungsnut senkrecht kreuzende zweite Führungsnut in derselben Stirnfläche des Zylinderkörpers gleitend ein. Hier werden somit einerseits der Zylinderkörper und andererseits der Kolben von jeweils einem von zwei Bolzen angetrieben, die um eine exzentrisch zur Drehachse des Zylinderkörpers verlaufende Achse kreisen, welche mit der Achse der Antriebswelle zusammenfällt.Such a rotary cylinder piston pump is known from DE-PS 421 648. In the known pump, 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. Here, on the one hand, 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.

Durch einen derartigen Antrieb wird jedoch nicht nur die Masse des Kolbens sondern auch die dem gegenüber viel größere Masse des Zylinderkörpers bei jeder Umdrehung desselben abwechselnd beschleunigt und verzögert, so daß durch die dabei auftretenden unterschiedlich großen und ungleichförmig wechselnden Kräfte eine verhältnismäßig große unausgeglichene rotierende Masse für die Antriebsscheibe und die Antriebswelle vorliegt. Hinzu kommt, daß auch die Gleitbewegung des zweiten Bolzens in seiner Führungsnut am Zylinderkörper ungleichförmigist und daß sowohl der zweite Bolzen wie auch der Kolben an der Kreuzungsstelle der Führungsnuten die zwischen deren aufeinandertreffenden Flanken vorhandenen Ecken überlaufen müssen. Insgesamt ist daher die bekannte Pumpe einem starken Verschleiß ausgesetzt und in ihrer möglichen Drehzahl beschränkt.By such a drive, however, not only the mass of the piston but also the much larger mass of the cylinder body is alternately accelerated and decelerated with each revolution of the same, so that a comparatively large unbalanced rotating mass for the resulting differently and non-uniformly changing forces the drive pulley and the drive shaft are present. In addition, the sliding movement of the second pin in its guide groove on the cylinder body is also non-uniform, and that both the second pin and the piston at the crossing point of the guide grooves must overlap the corners present between their flanks that meet. Overall, the known pump is therefore exposed to severe wear and limited in its possible speed.

Durch die Erfindung wird eine Rotationszylinder-Kolbenpumpe geschaffen, die im Vergleich mit der erwähnten bekannten Pumpe einem geringeren Verschleiß unterworfen ist und bei kompakter Ausführung mit höherer Drehzahl betrieben werden kann.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.

Dies wird gemäß der Erfindung bei einer Rotationszylinder-Kolbenpumpe mit den eingangs erwähnten Merkmalen dadurch erreicht, daß der Zylinderkörper und die Antriebswelle koaxial zueinander fest miteinander verbunden sind und der Bolzen im Pumpengehäuse feststehend angeordnet ist und in ein quer zur Kolbenachse und Bolzenachse verlaufendes Langloch des Kolbens von dem der Antriebswelle entgegengesetzten Ende des Zylinderkörpers her eingreift.This is achieved according to the invention in a rotary cylinder piston pump with the features mentioned above in that the cylinder body and the drive shaft are firmly connected coaxially to each other and the bolt is fixed in the pump housing and in an elongated hole of the piston transverse to the piston axis and the bolt axis engages from the end of the cylinder body opposite the drive shaft.

Die Rotationszylinder-Kolbenpumpe gemäß der Erfindunq kann somit in kleiner Baugröße und kompakter Bauweise ausgeführt werden. Der Zylinderkörper kann im wesentlichen über seine gesamte Umfangsfläche hin in einem entsprechend gestalteten Innenraum des Pumpengehäuses sauber abgestützt und gelagert werden und seine rotierende Masse ist bis auf die geringere rotierende Masse des Kolbens bezüglich der Antriebswelle ausgeglichen. Bis auf den Kolben, der eine Transplationsbewegung ausübt, sind nur stillstehende oder in ausschließlich rotierender Bewegung angetriebene Teile vorhanden, wobei die Erfindung mit einer minimalen Anzahl gegeneinander beweglicher Teile auskommt. Die erfindungsgemäße Rotationszylinder-Kolbenpumpe ist daher nur wenig verschleißbehaftet, läuft verhältnismäßig ruhig und kann gleichwohl auch bei hohen Drehzahlen betrieben werden.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. Except for 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.

Der den Kolben für seine Hin- und Herbewegung führende Arbeitsraum kann wie bei der eingangs erwähnten bekannten Lösung auch bei der erfindungsgemäßen Lösung als zu der einen Stirnseite des Zylinderkörpers hin offene Nut gestaltet sein, die an der offenen Nutseite von einem stillstehenden Stirndeckel des Gehäuses verschlossen ist. Da aber hierbei sich die translatorische Bewegung des Kolbens mit seiner kreisenden Bewegung überlagert und dadurch an dieser Stelle erhöhte Verschleißgefahr besteht, und da außerdem durch eine solche Ausführungsform an der Trennebene zwischen dem stillstehenden Stirndeckel und dem rotierenden Zylinderkörper zusätzliche Dichtungsflächen mit verhältnismäßig engen Toleranzen vorhanden sein müssen, wird in einer Ausgestaltung der Erfindung eine Ausführungsform vorgezogen, bei welcher der Arbeitsraum am gesamten Umfang von dem Zylinderkörper umschlossen ist und der Bolzen eine konzentrisch zur Drehachse des Zylinderkörpers ausgebildete Bohrung desselben durchgreift.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 . However, since 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 In one embodiment of the invention, 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.

Bei dieser Ausführungsform ist somit der Kolben vollständig im Inneren des Zylinderkörpers eingeschlossen und wird am gesamten Umfang in rein translatorischer Bewegung geführt. Außerdem sind die beiden Pumpenkammern dadurch an beiden Seiten über die Umfangsflächen des Zylinderkörpers und die mit diesen zusammenwirkenden Lagerflächen des Gehäuses gut abgedichtet. Ferner können hierbei der Kolben und entsprechend der ihn führende Arbeitsraum zylindrisch gestaltet werden, was gegenüber anderen Querschnitten, die an sich ebenfalls möglich sind, weniger aufwendig in der Fertigung ist.In this embodiment, the piston is thus completely enclosed inside the cylinder body and is guided in a purely translational movement over the entire circumference. In addition, 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. Furthermore, 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.

Durch die Ausbildung des den Kolben hin- und herführenden Bolzens als im Betrieb der Pumpe stillstehendes Teil ist es überdies in einfacher Weise möglich, den Kolbenhub einstellbar zu machen. Hierzu wird in einer weiteren vorteilhaften Ausgestaltung der Erfindung vorgeschlagen, daß der Bolzen an einem senkrecht zur Drehachse des Zylinderkörpers verstellbaren Schieber sitzt, der beispielsweise in einer entsprechenden Führungsnut des Pumpengehäuses geführt und über eine vorzugsweise mit Feingewinde ausgestattete Schraubspindel verstellt werden kann.By designing 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. For this purpose, it is proposed in a further advantageous embodiment of the invention that 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.

Die Erfindung wird anhand zweier Ausführungsformen erläutert, die aus der Zeichnung ersichtlich sind. In der Zeichnung zeigt:

  • Fig. 1 den Axialschnitt einer erfindungsgemäßen Rotationszylinder-Kolbenpumpe,
  • Fig. 2 den Querschnitt entsprechend der Schnittlinie aus Fig. 1 und
  • Fig. 3 eine Abwandlung der Ausführungsform aus den Fig. 1 und 2 zur beispielhaften Erläuterung einer einfachen Möglichkeit zur Verstellung des Kolbenhubes der Pumpe.
The invention is explained on the basis of two embodiments which can be seen from the drawing. The drawing shows:
  • 1 shows the axial section of a rotary cylinder piston pump according to the invention,
  • Fig. 2 shows the cross section corresponding to the section line of Fig. 1 and
  • Fig. 3 shows a modification of the embodiment of Figs. 1 and 2 for an exemplary explanation of a simple way to adjust the piston stroke of the pump.

Im Pumpengehäuse 1 ist ein an der einen Stirnseite von einem Gehäusedeckel 5 verschlossener, im wesentlichen zylindrischer Innenraum 2 ausgebildet, in welchem ein Zylinderkörper 4 drehbar gelagert ist, der senkrecht zu seiner Drehachse von einer zylindrischen Bohrung als Arbeitsraum 6 für einen darin hin- und herverschiebbar geführten, zylindrischen Kolben 7 durchsetzt ist. An der dem Gehäusedeckel 5 entgegengesetzten Seite erstreckt sich koaxial mit dem Zylinderkörper 4 die mit diesem einstückige, als Wellenzapfen ausgebildete Antriebswelle 8 aus dem Pumpengehäuse 1 heraus. An der Innenseite des Gehäusedeckels 5 sitzt ein parallel zur Drehachse des Zylinderkörpers verlaufender, jedoch zu dieser um die Exzentrizität e versetzter Bolzen 9, der durch eine koaxial zur Drehachse des Zylinderkörpers 4 ausgebildete Bohrung 10 an dessen dem Zylinderdeckel 5 zugewendeten Stirnende und diametral durch den Arbeitsraum 6 im Zylinderkörper 4 hindurchragt. Der Kolben 7 ist auf diesem Bolzen 9 gelagert, der hierzu ein senkrecht zur Bolzenachse und zur Kolbenachse verlaufendes Langloch 11 im Kolben 7 durchgreift und an den Langseiten des Langloches 11 gleitend anliegt.In the pump housing 1, 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. On the side opposite the housing cover 5, 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. On the inside of the housing cover 5 is 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.

Wie aus Fig. 2 ersichtlich, sind in dem Innenraum 2 des Gehäuses 1 an diametral gegenüberliegenden Stellen eine Eintrittskammer 3 und eine Austrittskammer 20 sichelförmig ausgebildet, deren senkrecht zur Zeichenebene der Fig. 2 gemessene Breite dem Durchmesser des Kolbens 7 entsprechen kann und in welche jeweils eine Gewindebohrung 12 mündet, in welche Schraubnippel für die Zufuhr bzw. Abfuhr des von der Pumpe geförderten Druckmittels eingeschraubt werden können.As can be seen from FIG. 2, 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.

Durch die Drehung der Antriebswelle 8 werden somit der Zylinderkörper 4 und in ihm der Kolben 7 in Umdrehung versetzt, der jedoch an dem stillstehenden Bolzen 9 gehalten ist, so daß er durch dessen Exzentrizität gegenüber der Drehachse des Zylinderkörpers 4 sich im Arbeitsraum 6 des Zylinderkörpers 4 hin und her bewegt und jedesmal, wenn er mit dem einen und dem anderen seiner Stirnenden die Eintrittskammer überläuft, das Druckmittel ansaugt und beim Uberlaufen der Austrittskammer 20 das Druckmittel herausdrückt. Es handelt sich daher um einen doppeltwirkenden Kolben.By rotation of the drive shaft 8, 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.

Bei der Ausführungsform nach Fig. 3 sitzt der Bolzen 9 an einem Schieber 13, der in einer entsprechenden Nut 19 des Gehäusedeckels 5 senkrecht zur Drehachse des Zylinderkörpers 4 verstellbar geführt ist. Hierzu greift in das Gewinde eines Gewindeloches in dem Schieber eine Schraubspindel 14 ein, die an einer außen am Gehäuse 1 festliegenden geschlitzten Platte 15 drehbar, jedoch axial fest gelagert ist, so daß mittels des Betätigungskopfes 16 der Schraubspindel 14 der Schieber 13 und damit der an ihm sitzende Bolzen 9 zur Verstellung der Exzentrizität e und damit des Kolbenhubes stufenlos feinverstellt werden kann. Im übrigen entspricht die Ausführungsform aus Fig. 3 der aus den Fig. 1 und 2, wie durch die entsprechenden gleichlautenden Bezugszeichen ersichtlich ist.In the embodiment according to FIG. 3, 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. For this purpose, 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. Otherwise, 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.

Die Stellen, an denen die Scheitel der sichelförmigen Ein- und Austrittskammern 3,20 liegen und die Gewindebohrungen 12 für die Ein- und Austrittsleitungen münden, liegen diametral des den Zylinderkörper 7 am Umfang drehbar führenden zylindrischen Innenraumes 2 des Gehäuses 1 einander gegenüber in einer Ebene, welche die Achse des Zylinderkörpers 7 enthält und senkrecht zu der die Achsen des Zylinderkörpers 7 und des Bolzens 9 enthaltenden Ebene verläuft. Durch Änderung der Drehrichtung der Antriebswelle 8 werden die Eintrittskammer und die Austrittskammer wirkungsmäßig miteinander vertauscht. Dieselbe Möglichkeit ist bei der Ausführungsform entsprechend Fig. 3 vorhanden, indem der Bolzen 9 von der einen Achsseite des Zylinderkörpers 4 über dessen Achse hinaus auf die andere Achsseite des Zylinderkörpers 4 verschoben wird.The locations at which the crests of the crescent-shaped inlet and outlet chambers 3, 20 and the threaded bores 12 for the inlet and outlet lines open are diametrically opposite the cylindrical inner space 2 of the housing 1, which rotates around the circumference of the cylinder body 7, in one plane which contains the axis of the cylinder body 7 and is perpendicular to the plane containing the axes of the cylinder body 7 and the bolt 9. By changing the direction of rotation of the drive shaft 8, the inlet chamber and the outlet chamber are effectively interchanged. The same possibility is present in the embodiment according to FIG. 3 in that the bolt 9 is shifted from one axis side of the cylinder body 4 beyond its axis to the other axis side of the cylinder body 4.

Die größte Länge des Langloches 11 entspricht dem doppelten Wert der größten Exzentrizität e vermehrt um den Durchmesser des in das Langloch 11 eingreifenden Teils des Bolzens 9. Der Durchmesser der zylindrischen Bohrung 10 entspricht wenigstens dem doppelten Wert der größtmöglichen Exzentrizität e vermehrt um den Durchmesser des die Bohrung 10 durchgreifenden Teils des Bolzens 9.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.

Wenn bei der Ausführungsform gemäß Fig. 1 der Bolzen 9 nicht verstellbar sein soll, kann zur Verkürzung der nicht abgestützten auskragenden Länge des Bolzens 9 dessen die Bohrung 10 durchsetzender Schaftteil als konzentrisch mit dem Zylinderkörper 7 angeordneter Zylinderschaft ausgebildet sein, dessen Durchmesser der der Bohrung 10 entspricht, so daß der Zylinderschaft in der Bohrung 10 drehbar abgestützt ist (nicht gezeigt).If, in the embodiment according to FIG. 1, the bolt 9 is not to be adjustable, in order to shorten the unsupported cantilevered length 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).

Claims (4)

1. Rotationszylinder-Kolbenpumpe, insbesondere Schmiermittelpumpe, mit einem im Pumpengehäuse um eine gehäusefeste Drehachse drehbar gelagerten Zylinder-:- körper, der von einer parallel zu seiner Drehachse verlaufenden Antriebswelle angetrieben ist und in welchem senkrecht zu seiner Drehachse in einem Arbeitsraum ein Kolben geführt ist, der auf einem parallel zur Drehachse des Zylinderkörpers verlaufenden Bolzen gelagert ist, der exzentrisch zur Achse der Antriebswelle verläuft und an dem der Kolben bei der Umdrehung des Zylinders in dem Arbeitsraum hin und her verschiebbar angetrieben ist, dadurch gekennzeichnet, daß der Zylinderkörper (4) und die Antriebswelle (8) koaxial zueinander fest miteinander verbunden sind und der Bolzen (9) im Pumpengehäuse (1) feststehend angeordnet ist und in ein quer zur Kolbenachse und Bolzenachse verlaufendes Langloch (11) des Kolbens (7) von dem der Antriebswelle (8) entgegengesetzten Ende des Zylinderkörpers (4) her eingreift.1.Rotation cylinder piston pump, in particular a lubricant pump, with a cylinder which is rotatably mounted in the pump housing about an axis of rotation fixed to the housing -: - body 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 area , which is mounted on a pin 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, characterized in that the cylinder body (4) and the drive shaft (8) are firmly connected to one another coaxially to one another, and the pin (9) is arranged in a fixed manner in the pump housing (1) and in an elongated hole (11) of the piston (7), which runs transversely to the piston axis and pin axis, of that of the drive shaft (8 ) engages opposite end of the cylinder body (4) ago. 2. Rotationszylinder-Kolbenpumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Arbeitsraum (6) am gesamten Umfang von dem Zylinderkörper (4) umschlossen ist und der Bolzen (9) eine konzentrisch zur Drehachse des Zylinderkörpers (4) ausgebildete Bohrung (10) desselben durchgreift, die einen größeren Durchmesser als der Bolzen (9) hat.2. Rotary cylinder piston pump according to claim 1, characterized in that the working space (6) on the entire circumference of the cylinder body (4) is enclosed and the bolt (9) has a bore (10) formed concentrically with the axis of rotation of the cylinder body (4) passes through, which has a larger diameter than the bolt (9). 3. Rotationszylinder-Kolbenpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Bolzen (9) zur Verstellung seiner Exzentrizität (e) gegenüber der Drehachse des Zylinderkörpers (4) verstellbar ist.3. Rotary cylinder piston pump according to claim 1 or 2, characterized in that the bolt (9) for adjusting its eccentricity (e) relative to the axis of rotation of the cylinder body (4) is adjustable. 4. Rotationszylinder-Kolbenpumpe nach Anspruch 3, dadurch gekkenzeichnet, daß der Bolzen (9) an einem senkrecht zur Drehachse des Zylinderkörpers (4) verstellbaren Schieber (13) sitzt.4. Rotary cylinder piston pump according to claim 3, characterized in that the bolt (9) is seated on a slide (13) which is adjustable perpendicular to the axis of rotation of the cylinder body (4).
EP79103934A 1978-10-17 1979-10-12 Pump, particularly lubrication pump, with rotating cylinder and piston Withdrawn EP0010268A1 (en)

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 (en) 1980-04-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103934A Withdrawn EP0010268A1 (en) 1978-10-17 1979-10-12 Pump, particularly lubrication pump, with rotating cylinder and piston

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EP (1) EP0010268A1 (en)
DE (1) DE2941469A1 (en)
GB (1) GB2034809A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000247A1 (en) * 1985-07-09 1987-01-15 Peter Stillhart Rotary piston pump
FR2773853A1 (en) * 1998-01-21 1999-07-23 Francis Villeneuve Pumping unit for liquids containing semi-solids e.g. food or cement
WO2000011321A1 (en) * 1998-08-19 2000-03-02 Young Bok Lee Rotary pump by the piston
DE102010034896B3 (en) * 2010-08-16 2011-07-28 Alke, Knut, 37520 Hydraulic pump i.e. rotary piston pump, for gear box of bicycle-like multi-track car, has pistons for abutting at opposite portions of control body, and stopper portions for projecting from base plate of carriage towards shaft
CN109538434A (en) * 2018-12-21 2019-03-29 浙江普莱得电器有限公司 A kind of plunger type pump housing and cleaning machine

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 (en) * 1940-12-11 1953-09-17 Julius Pintsch K G Piston pump with a piston carrier rotating in a housing

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 (en) * 1940-12-11 1953-09-17 Julius Pintsch K G Piston pump with a piston carrier rotating in a housing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000247A1 (en) * 1985-07-09 1987-01-15 Peter Stillhart Rotary piston pump
FR2773853A1 (en) * 1998-01-21 1999-07-23 Francis Villeneuve Pumping unit for liquids containing semi-solids e.g. food or cement
WO2000011321A1 (en) * 1998-08-19 2000-03-02 Young Bok Lee Rotary pump by the piston
DE102010034896B3 (en) * 2010-08-16 2011-07-28 Alke, Knut, 37520 Hydraulic pump i.e. rotary piston pump, for gear box of bicycle-like multi-track car, has pistons for abutting at opposite portions of control body, and stopper portions for projecting from base plate of carriage towards shaft
DE202011104581U1 (en) 2010-08-16 2011-11-23 Knut Alke Hydraulic pump, gearbox and vehicle with the gearbox
CN109538434A (en) * 2018-12-21 2019-03-29 浙江普莱得电器有限公司 A kind of plunger type pump housing and cleaning machine

Also Published As

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

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