EP1775467B1 - Excentrique connectable et mélangeur avec pompe à pistons radiaux connectable - Google Patents

Excentrique connectable et mélangeur avec pompe à pistons radiaux connectable Download PDF

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Publication number
EP1775467B1
EP1775467B1 EP06020696A EP06020696A EP1775467B1 EP 1775467 B1 EP1775467 B1 EP 1775467B1 EP 06020696 A EP06020696 A EP 06020696A EP 06020696 A EP06020696 A EP 06020696A EP 1775467 B1 EP1775467 B1 EP 1775467B1
Authority
EP
European Patent Office
Prior art keywords
eccentric
switchable
sleeve
eccentricity
eccentric shaft
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.)
Active
Application number
EP06020696A
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German (de)
English (en)
Other versions
EP1775467A1 (fr
Inventor
Bernhard Eckert
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.)
Eugen Woerner & Co KG GmbH
Original Assignee
Eugen Woerner & Co KG 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 Eugen Woerner & Co KG GmbH filed Critical Eugen Woerner & Co KG GmbH
Publication of EP1775467A1 publication Critical patent/EP1775467A1/fr
Application granted granted Critical
Publication of EP1775467B1 publication Critical patent/EP1775467B1/fr
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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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/125—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts
    • F04B49/126—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts with a double eccenter mechanism
    • 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
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft

Definitions

  • the invention relates to a switchable eccentric drive with an eccentric shaft, wherein the eccentric shaft has an eccentric eccentric to a rotational axis of the eccentric shaft arranged eccentric and a radial piston pump according to the independent claim 12th
  • Eccentric drives for radial piston pumps or other assemblies that are to be placed in an oscillating motion have long been known. They are simple, inexpensive to produce and extremely reliable.
  • a disadvantage of these eccentric drives is that their eccentricity is determined constructively. As a result, the flow rate of a radial piston pump is coupled directly to the speed of the eccentric shaft. Furthermore, it is impossible because of the eccentricity defined by design, to achieve a zero promotion of the radial piston pump with rotating eccentric shaft.
  • an eccentric drive according to the preamble of claim 1 is known.
  • this eccentric eccentric shaft and eccentric sleeve are coupled together via a torsion spring.
  • the stroke is determined by the Widestand, which opposes the driven by the eccentric drive unit of the rotational movement of the eccentric drive.
  • the invention is based on the object to provide a switchable eccentric, which allows different eccentricities and at the same time has a simple structure.
  • the inventive combination of an eccentric shaft with an eccentric portion and an eccentric sleeve it is possible to change the stroke of the eccentric sleeve in dependence on the direction of rotation of the eccentric shaft. This is due to the fact that in a first direction of rotation of the eccentric shaft, the eccentricity of the eccentric portion and the eccentricity of the eccentric sleeve add, while subtracting in the opposite direction of rotation. This also means that the aforementioned eccentricities can cancel out in one direction of rotation, so that a zero delivery of the driven by the eccentric shaft pump element adjusts itself.
  • this constructive design of the switchable eccentric has the function of a simple freewheel, but it is much easier to produce manufacturing technology than conventional freewheels.
  • the eccentricities of the eccentric portion and the eccentric sleeve are not the same size, it is possible to set a first delivery stroke in a first direction of rotation and to change the delivery stroke by changing the direction of rotation of the eccentric shaft. This makes it possible, at the same speed of the eccentric shaft to realize different flow rates of driven by the eccentric shaft pump elements. As a result, the switchable eccentric drive is thus suitable for flow control.
  • stop means In order to ensure that in both directions of rotation of the eccentric shaft, the eccentric sleeve occupies a defined position relative to the eccentric portion of the eccentric shaft, stop means according to the invention are provided, which limit the rotation of the eccentric sleeve relative to the eccentric portion.
  • the stop means may comprise a pin and a circular arc-shaped groove cooperating with the pin or a shoulder cooperating with the pin.
  • the stop means comprise a claw, as it is known from a dog clutch, which cooperates with a circular arc-shaped groove or a shoulder.
  • the eccentricity of the eccentric portion is equal to the eccentricity of the eccentric sleeve.
  • the eccentricity of the eccentric portion is smaller or larger than the eccentricity of the eccentric sleeve.
  • the switchable eccentric drive according to the invention is particularly suitable for generating an oscillating movement, in particular for driving a radial piston pump.
  • the eccentric shaft is coupled to a further consumer, in particular a stirring blade of an agitator.
  • a stirring blade of an agitator This makes it possible, when driving the eccentric shaft in a first direction of rotation to drive both the impeller and the radial piston pump and to drive when changing the direction of rotation of the eccentric shaft only the impeller while zero promotion of the radial piston pump.
  • FIG. 1 is a longitudinal section through a housing 1, which may be, for example, a pump housing of a radial piston pump shown.
  • a housing 1 which may be, for example, a pump housing of a radial piston pump shown.
  • an eccentric shaft 3 is rotatably mounted in FIG. 1 provided with the reference numeral 5.
  • the eccentric shaft 3 has an eccentric section 7.
  • the eccentricity of the eccentric 7 with respect to the axis of rotation 5 is in FIG. 1 denoted by e 1 .
  • an eccentric sleeve 9 is rotatably mounted.
  • the eccentric sleeve 9 has a circular outer contour, as can be seen for example from the Figures 2 and 3 results. Eccentrically to a central axis 11 of the eccentric sleeve 9, a bore 13 in the eccentric sleeve 9 is present.
  • the bore 13 has the same diameter as the eccentric portion 7 of the eccentric shaft 3 and serves as a bearing of the eccentric sleeve 9 on the eccentric 7.
  • the eccentricity of the bore 13 with respect to the central axis 11 of the eccentric sleeve 9 is in FIG. 1 denoted by ez.
  • a pin 15 is provided, which engages in an arcuate groove 17 in the eccentric sleeve 9.
  • the groove 17 extends concentrically to the bore 13 in the eccentric sleeve 9 and comprises an angle of about 180 °.
  • the groove 17 and the pin 15 have the function of a rotation angle limit and a stop. They ensure that the eccentric sleeve 9 is rotatable only by a certain angle relative to the eccentric portion 7. Furthermore, with the aid of the pin 15 and the groove 17, a torque between the eccentric shaft 3 and the eccentric sleeve 9 can be transmitted.
  • a piston 19 of a radial piston pump rests on the outer diameter of the eccentric sleeve 9 and is held by a spring, not shown, in contact with the eccentric sleeve 9, the piston 19 of a radial piston pump can be set by rotating the eccentric shaft 3 in an oscillating motion.
  • FIG. 2 is a section along the line AA according to FIG. 1 shown, wherein the eccentric shaft 3 is rotated counterclockwise. In this illustration, the circular arc-shaped groove 17 is clearly visible.
  • the pin 15 locks the eccentric sleeve 9 relative to the eccentric shaft 3 in the in FIG. 2 position shown. simultaneously the drive torque is transmitted from the eccentric shaft 3 to the eccentric sleeve 9.
  • the eccentricity e 1 of the eccentric portion 9 is the same size as the eccentricity e 2 of the eccentric sleeve 9. However, this need not always be so.
  • FIG. 4 an application example of a switchable eccentric drive according to the invention is shown.
  • a geared motor 25 the rotatably mounted in the pump housing 1 eccentric shaft 3 is driven.
  • an eccentric sleeve 9 is provided at the eccentric portion 7 of the eccentric shaft 3, as shown in the FIGS. 1 to 3 explained in detail.
  • the eccentric sleeve 9 drives the pistons (not shown) of two oppositely arranged pump elements 27.
  • a cap 28 is provided, which serves on the one hand to fix the eccentric sleeve 9 in the axial direction and on the other hand to drive an agitator 29 of a designated in its entirety by the reference numeral 31 agitator.
  • the cap 28 is arranged coaxially to the axis of rotation 5 of the eccentric shaft, so that the or Impeller 29 describe a circular path which is concentric with the axis of rotation 5.
  • This arrangement is particularly advantageous if in certain operating conditions of lubricating the medium contained in the agitator 31 is to be stirred, for example, to lead out air bubbles from the fluid, without at the same time promote the pump elements 27.
  • the medium contained in the agitator 31 should be homogenized without the pump elements 27 promoting the radial piston pump.
  • the direction of rotation of the eccentric shaft 3 and the geared motor 25 is reversed, so that the eccentricities e 1 and e 2 add and the promotion of the pump elements 27 begins according to, as shown in FIG. 2 was explained in detail.
  • the impellers 29 are also driven by the drive of the pump elements 27, so that even in this operating state stirring of the conveying medium located in the agitator 31 is ensured.
  • the impellers 29 may be configured to have a stirring action that is rotational direction dependent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (14)

  1. Entraînement par excentrique embrayable, avec un arbre à excentrique (3), lequel arbre à excentrique (3) présente un segment excentrique (7) disposé de manière excentrée par rapport à un axe de rotation (5) de l'arbre à excentrique (3), une douille excentrique (9) étant supportée en rotation sur le segment excentrique (7) et la douille excentrique (9) pouvant tourner par rapport au segment excentrique (7) d'un angle inférieur ou égal à 180°, et avec des moyens de butée (15, 17) qui limitent la rotation de la douille excentrique (9) par rapport au segment excentrique (7), caractérisé en ce que la course de la douille excentrique (9) varie en fonction du sens de rotation de l'arbre à excentrique (3).
  2. Entraînement par excentrique embrayable selon la revendication 1, caractérisé en ce que les moyens de butée comprennent au moins un pion (15) et au moins une rainure en arc de cercle (17) coopérant avec le pion (15) ou un épaulement coopérant avec le pion (15).
  3. Entraînement par excentrique embrayable selon la revendication 2, caractérisé en ce que les moyens de butée comprennent au moins une griffe et au moins une rainure en arc de cercle (17) coopérant avec la griffe ou un épaulement coopérant avec la griffe.
  4. Entraînement par excentrique embrayable selon la revendication 2 ou la revendication 3, caractérisé en ce que le pion (15) ou la griffe est fixé(e) à l'arbre à excentrique (3) et en ce que la rainure (17) ou l'épaulement est prévu (e) dans la douille excentrique (9).
  5. Entraînement par excentrique embrayable selon la revendication 2 ou la revendication 3, caractérisé en ce que la rainure (17) ou l'épaulement est prévu(e) dans l'arbre à excentrique (3) et en ce que le pion (15) ou la griffe est fixé(e) dans ou sur la douille excentrique (9).
  6. Entraînement par excentrique embrayable selon l'une des revendications précédentes, caractérisé en ce que l'excentricité (e1) du segment excentrique (7) est égale à l'excentricité (e2) de la douille excentrique (9).
  7. Entraînement par excentrique embrayable selon l'une des revendications 1 à 5, caractérisé en ce que l'excentricité (e1) du segment excentrique (7) est inférieure ou supérieure à l'excentricité (e2) de la douille excentrique (9) .
  8. Entraînement par excentrique embrayable selon l'une des revendications précédentes, caractérisé en ce que l'excentricité (e1) du segment excentrique (7) et l'excentricité (e2) de la douille excentrique (9) s'additionnent en tout ou partie dans un premier sens de rotation lors d'une rotation de l'arbre à excentrique (3).
  9. Entraînement par excentrique embrayable selon l'une des revendications 1 à 7, caractérisé en ce que l'excentricité (e1) du segment excentrique (7) et l'excentricité (e2) de la douille excentrique (9) se soustraient en tout ou partie dans un deuxième sens de rotation lors d'une rotation de l'arbre à excentrique (3).
  10. Entraînement par excentrique embrayable selon l'une des revendications précédentes, caractérisé en ce que l'excentricité (e1) du segment excentrique (7) et l'excentricité (e2) de la douille excentrique (9) servent à générer un mouvement oscillant, en particulier pour entraîner une pompe à pistons.
  11. Entraînement par excentrique embrayable selon l'une des revendications précédentes, caractérisé en ce que l'arbre à excentrique (3) est accouplé à une autre charge, en particulier une pale agitatrice (29) d'un agitateur (31).
  12. Pompe à pistons radiaux avec au moins un élément de pompage (27), caractérisée en ce que le ou les éléments de pompage (27) sont entraînés par un entraînement par excentrique embrayable selon l'une des revendications précédentes.
  13. Pompe à pistons radiaux selon la revendication 12, caractérisée en ce qu'il est prévu une pale agitatrice (29) d'un agitateur (31) et en ce que la pale agitatrice (29) est accouplée rigidement à l'arbre à excentrique (31).
  14. Pompe à pistons radiaux selon l'une des revendications 12 ou 13, caractérisée en ce que l'arbre à excentrique (3) est entraîné par un moteur, de préférence par un moteur électrique et de façon particulièrement préférée par un motoréducteur (25).
EP06020696A 2005-10-11 2006-10-02 Excentrique connectable et mélangeur avec pompe à pistons radiaux connectable Active EP1775467B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005048567A DE102005048567B3 (de) 2005-10-11 2005-10-11 Schaltbarer Exzenterantrieb und Rührwerk mit zuschaltbarer Radialkolbenpumpe

Publications (2)

Publication Number Publication Date
EP1775467A1 EP1775467A1 (fr) 2007-04-18
EP1775467B1 true EP1775467B1 (fr) 2008-10-01

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ID=37496796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06020696A Active EP1775467B1 (fr) 2005-10-11 2006-10-02 Excentrique connectable et mélangeur avec pompe à pistons radiaux connectable

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Country Link
EP (1) EP1775467B1 (fr)
AT (1) ATE409808T1 (fr)
DE (2) DE102005048567B3 (fr)
ES (1) ES2315981T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045844A1 (de) 2007-09-26 2009-04-02 Eugen Woerner Gmbh & Co. Kg Radialkolbenpumpe mit mindestens zwei gesondert ansteuerbaren Pumpenelementen
DE102009046405A1 (de) * 2009-11-04 2011-05-05 Continental Teves Ag & Co. Ohg Kolbenpumpe
DE102010043886A1 (de) * 2010-11-15 2012-05-16 Continental Teves Ag & Co. Ohg Kolbenpumpe
CN102182665B (zh) * 2011-05-26 2013-01-02 北京康斯特仪表科技股份有限公司 高压双向微型电动气泵
DE102011087221B4 (de) 2011-11-28 2014-05-28 Eugen Woerner Gmbh & Co. Kg Schaltbare Druckentlastung einer Schmiereinrichtung mit Kolbenpumpe
SE547390C2 (en) 2023-05-25 2025-07-29 Hydraulkraft Sverige Ab Radial pump device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH204332A (de) * 1937-12-23 1939-04-30 Lanfranconi Domenico Kolbenpumpe mit vom Förderdruck abhängiger Fördermenge und einstellbarem Enddruck.
US4022082A (en) * 1974-10-13 1977-05-10 Kobe Steel Ltd. Driving apparatus for oscillation of a mold within a continuous casting machine
CA1103960A (fr) * 1977-11-23 1981-06-30 William J. Glazier Excentrique a rayon variable
FR2503274B1 (fr) * 1981-04-02 1988-03-11 Evrard Ets Pompe alternative a course reglable, notamment pour la pulverisation agricole
DE3623596A1 (de) * 1986-07-12 1988-02-04 Kromschroeder Ag G Welle, insbesondere fuer balgengaszaehler
DE4122486A1 (de) * 1991-07-06 1993-01-07 Teves Gmbh Alfred Antriebsaggregat, insbesondere motor-pumpenaggregat fuer schlupfgeregelte bremsanlagen
DE19650274A1 (de) * 1996-12-04 1998-06-10 Teves Gmbh Alfred Pumpenaggregat

Also Published As

Publication number Publication date
ATE409808T1 (de) 2008-10-15
DE102005048567B3 (de) 2007-04-12
DE502006001661D1 (de) 2008-11-13
EP1775467A1 (fr) 2007-04-18
ES2315981T3 (es) 2009-04-01

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