EP2464867B1 - Dispositif d'entrainement pour une machine de refoulement oscillante - Google Patents

Dispositif d'entrainement pour une machine de refoulement oscillante Download PDF

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Publication number
EP2464867B1
EP2464867B1 EP10740619.1A EP10740619A EP2464867B1 EP 2464867 B1 EP2464867 B1 EP 2464867B1 EP 10740619 A EP10740619 A EP 10740619A EP 2464867 B1 EP2464867 B1 EP 2464867B1
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EP
European Patent Office
Prior art keywords
drive mechanism
set forth
piston rods
eccentric shaft
groove
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
EP10740619.1A
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German (de)
English (en)
Other versions
EP2464867A1 (fr
Inventor
Horst Fritsch
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.)
Prominent GmbH
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Prominent GmbH
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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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
    • 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
    • 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

Definitions

  • the present invention relates to an engine for oscillating displacement machines, such as diaphragm pumps, with an eccentric shaft and a plurality of piston rods, wherein the piston rods are so in communication with the eccentric shaft, that rotation of the eccentric shaft causes an oscillating linear movement of the piston rods.
  • Oscillating machines are usually built on the principle of Geradschubkurbelgetriebes. At high power, or to keep the oscillating, acting on the machine foundation mass forces low, such machines are usually designed as a multi-crank engine.
  • the individual eccentrics with connecting rod and piston rods, either in a row or boxer or star shape are arranged side by side and are driven by a common crankshaft, the eccentric are offset by the same angle to each other.
  • the DE-G-85 21 520 U describes a multi-cylinder diaphragm pump having a plurality of diaphragm pump heads, each having a actuatable by a hydraulic piston diaphragm.
  • the pump drive via a connecting rod eccentric device.
  • the connecting rod is rotatably coupled to both the piston and the piston rod and the eccentric shaft, whereby the engine is expensive to manufacture.
  • the US 5,368,451 describes a corresponding device with three hydraulic cylinders, in which the piston rod is pressed by means of a return spring on the eccentric surface.
  • DE 196 26 938 A1 describes a web-shaped piston-cylinder arrangement in which the shaft is surrounded by radially aligned cylinders in which displaceable pistons are arranged, which are connected by connecting rods via an eccentric with the Wellenwerbunden.
  • a slotted guide consists of a backdrop, which has a slot, a web or a groove, and a correspondingly formed sliding block, which is forcibly guided by the backdrop.
  • all the piston rods lie in one plane, wherein the piston rods are particularly preferably arranged in a star shape.
  • star-shaped in the context of the present application, it is understood that the piston rods are equally spaced from each other in the circumferential direction of the eccentric shaft. In other words, adjoining adjacent piston rods in a projection on a plane perpendicular to the eccentric shaft in each case the same angle.
  • the slotted guide is designed such that eccentric shaft and piston rods are positively connected to each other in a first spatial direction, preferably in a second direction perpendicular thereto spatial direction, while a relative movement in a third spatial direction perpendicular to is arranged first and second spatial direction is possible.
  • the backdrop may be formed as a T-slot and the sliding block as a correspondingly adapted sliding block. It has been shown that the link is preferably arranged on the piston rod and the sliding blocks are preferably attached to the eccentric shaft.
  • the eccentric shaft may be connected to a link element (eg rotatable) which has the links or the sliding blocks, the links or the sliding blocks lying on the boundary surfaces of a regular polygon with n corners.
  • a link element eg rotatable
  • n is preferably an integer multiple of m.
  • the backdrop is preferably made of hardened steel.
  • the sliding block is best made from a copper alloy, preferably made of bronze, to allow the lowest possible movement of the sliding block in the backdrop.
  • the disadvantages mentioned above are eliminated in that the piston forces both for the pressure stroke and for the suction stroke directly from the eccentric link, which is rotatably connected to the eccentric shaft, are transmitted to the individual piston rods, whereby additional components, such as an expensive retraction rod or connecting rods omitted, and so the size of the entire engine can be significantly reduced.
  • the engine is used to drive a three-cylinder engine.
  • the engine thus has three piston rods 1, which lie in a plane and are offset by 120 ° from each other.
  • the eccentric shaft 2 is rotatably connected to a Exzenterkulisse. If the eccentric shaft is rotated about the axis 12, the center 11 of the eccentric link will move on the circle indicated by the reference numeral 13. In other words, the eccentric cam performs a translatory circular motion.
  • the link element 6 is preferably triangular in shape, wherein on the three sides of the triangle, the sliding blocks or sliding blocks are arranged, the sliding surfaces 8 have.
  • the piston rods 1 have corresponding sliding shoes 5, which serve as a backdrop. As in particular in FIG.
  • the sliding block 5 engages around the sliding blocks of the link element 6, so that the sliding surfaces 8 of the sliding blocks bear against the sliding surfaces 7 of the backdrop.
  • the sliding blocks of the link element 6 are thus positively embraced by the shoe 5.
  • the sliding blocks 5 Upon rotation of the shaft 2, the sliding blocks 5 will slide along the sliding surfaces 8 of the sliding blocks.
  • almost no transverse forces are applied by the eccentric shaft to the piston rods 1.
  • FIGS. 3a to 3c Three different embodiments of the invention are shown.
  • FIG. 3a is shown a two-cylinder drive.
  • the engine therefore has only two piston rods 1.
  • the link element 6 'here has a rectangular shape, with corresponding sliding surfaces provided with sliding surfaces are arranged only on two opposite sides of the rectangle, which are encompassed by the shoes 5 of the piston rods 1. at a rotation of the shaft, the center 11 of the gate element 6 'will move along the circle 13.
  • FIG. 3b shows those from the Figures 1 and 2 already known embodiment with three cylinders.
  • FIG. 3c is shown a four-cylinder drive.
  • the link element 6 is the link element 6 'of the embodiment of FIG. 3a similar, but here on all four sides of the square gate element 6 "corresponding sliding surfaces 11 supporting sliding blocks are arranged, which are each embraced by a shoe 5 of the four piston rods 1.
  • FIGS. 4a and 4b show an enlarged view of the slotted guide.
  • the piston rods 1 have at their end a pressure plate 5 ', which together with the remindholklauen 14 form the shoe.
  • the return claws 14 are fastened by means of a screw to the pressure plate 5 '. In the in FIG. 4a In the embodiment shown, the return claw 14 is screwed onto the pressure plate 5 'on the front side.
  • the return pawl 14 is U-shaped, so that it surrounds both the sliding block and the pressure plate 5 '.
  • the return claw 14 is then screwed from the rear, ie from the side facing away from the sliding block of the pressure plate 5 'with this.
  • FIGS. 5a and 5b Embodiments are shown in which the return claws 14 are screwed to the peripheral edges of the pressure plate 5 '.
  • Both return claws 5 ' are connected to each other by means of a bolt and corresponding fitting screws 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Transmission Devices (AREA)

Claims (11)

  1. Groupe propulseur pour moteur volumétrique comprenant un arbre à excentrique (2) une pluralité m de tiges de piston (1), étant entendu que les tiges de piston (1) sont en liaison avec l'arbre à excentrique (2) de telle sorte qu'une rotation de l'arbre à excentrique entraîne un mouvement linéaire oscillatoire des tiges de piston (1), caractérisé en ce que l'arbre à excentrique (2) et chaque tige de piston (1) sont respectivement reliés l'un à l'autre par le biais d'un guide de coulisse et en ce que toutes les tiges de piston (1) sont situées dans un seul plan.
  2. Groupe propulseur selon la revendication 1, caractérisé en ce que les tiges de piston (1) sont agencées en forme d'étoile.
  3. Groupe propulseur selon l'une des revendications 1 et 2, caractérisé en ce que l'arbre à excentrique (2) et les tiges de piston (1) sont reliés les uns aux autres par assemblage de forme dans une première direction de l'espace, et de préférence également dans une deuxième direction de l'espace agencée perpendiculairement à celle-ci, tandis qu'un mouvement relatif est possible dans une troisième direction de l'espace, qui est agencée perpendiculairement aux première et deuxième directions de l'espace.
  4. Groupe propulseur selon l'une des revendications 1 à 3, caractérisé en ce que le guide de coulisse est réalisé comme un assemblage de rainure et clavettes rainurées en T, étant entendu que de préférence, les tiges de piston présentent la rainure en T et les clavettes rainurées sont fixées sur l'arbre à excentrique (2).
  5. Groupe propulseur selon la revendication 4, caractérisé en ce que l'arbre à excentrique (2) comprend un élément de coulisse qui présente les rainures en T ou les clavettes rainurées, étant entendu que des rainures en T ou des clavettes rainurées se trouvent sur les arêtes d'un polygone régulier ayant n angles.
  6. Groupe propulseur selon la revendication 5, caractérisé en ce que n est un multiple entier de m, étant entendu que de préférence, n est égal à m.
  7. Groupe propulseur selon l'une des revendications 1 à 6, caractérisé en ce que la rainure en T est réalisée en acier durci.
  8. Groupe propulseur selon l'une des revendications 1 à 7, caractérisé en ce que la clavette rainurée est réalisée dans un alliage de cuivre, de préférence en bronze.
  9. Groupe propulseur selon l'une des revendications 4 à 8, caractérisé en ce que la rainure en T est formée par une plaque de pression (5') et une mâchoire de rappel (14) qui est fixée à la plaque de pression (5').
  10. Groupe propulseur selon la revendication 9, caractérisé en ce que la mâchoire de rappel (14) est reliée avec la plaque de pression (5') de la tige de piston (1) au moyen d'un boulon ou d'une vis ajustée (15), étant entendu que la mâchoire de rappel (14) est de préférence reliée avec la plaque de pression (5') de façon rotative.
  11. Pompe à membrane comprenant un groupe propulseur selon l'une des revendications 1 à 10.
EP10740619.1A 2009-08-11 2010-08-03 Dispositif d'entrainement pour une machine de refoulement oscillante Active EP2464867B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009037123 2009-08-11
PCT/EP2010/061303 WO2011018393A1 (fr) 2009-08-11 2010-08-03 Dispositif d'entraînement pour machines volumétriques oscillantes

Publications (2)

Publication Number Publication Date
EP2464867A1 EP2464867A1 (fr) 2012-06-20
EP2464867B1 true EP2464867B1 (fr) 2014-09-03

Family

ID=43242194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10740619.1A Active EP2464867B1 (fr) 2009-08-11 2010-08-03 Dispositif d'entrainement pour une machine de refoulement oscillante

Country Status (10)

Country Link
US (1) US20120097025A1 (fr)
EP (1) EP2464867B1 (fr)
JP (1) JP2013501881A (fr)
CN (1) CN102472262A (fr)
BR (1) BR112012003106A8 (fr)
CA (1) CA2762274A1 (fr)
ES (1) ES2523271T3 (fr)
MY (1) MY160348A (fr)
RU (1) RU2012104760A (fr)
WO (1) WO2011018393A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102691636B (zh) * 2012-06-09 2015-02-25 林志元 一种水持续增压装置
BR112015030857A2 (pt) * 2013-06-13 2017-07-25 Magna Powertrain Bad Homburg GmbH compressor de pistão radial
GB2540548A (en) * 2015-07-20 2017-01-25 Delphi Int Operations Luxembourg Sarl Novel pump design
CN105715473A (zh) * 2016-04-01 2016-06-29 郑州科技学院 一种多缸高压径向柱塞泵
CN107120252A (zh) * 2017-03-31 2017-09-01 杨先哲 一种动力转化装置和气泵
CN107339218A (zh) * 2017-07-17 2017-11-10 李静茹 一种高效率空气压缩器
CN108050041A (zh) * 2018-01-25 2018-05-18 刘硕毅 同面多缸直动式气体压缩机构
CN110630461B (zh) * 2019-09-24 2021-02-05 浙江瑞程石化技术有限公司 一种变量径向柱塞泵

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CH504620A (de) * 1970-03-02 1971-03-15 Wisag Wissenschaftliche Appara Kolbenpumpe, deren Hub veränderlich einstellbar ist
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Also Published As

Publication number Publication date
MY160348A (en) 2017-02-28
BR112012003106A8 (pt) 2017-12-05
CN102472262A (zh) 2012-05-23
EP2464867A1 (fr) 2012-06-20
US20120097025A1 (en) 2012-04-26
WO2011018393A1 (fr) 2011-02-17
RU2012104760A (ru) 2013-09-20
JP2013501881A (ja) 2013-01-17
ES2523271T3 (es) 2014-11-24
BR112012003106A2 (pt) 2016-02-23
CA2762274A1 (fr) 2011-02-17

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