EP2464867A1 - Dispositif d'entraînement pour machines volumétriques oscillantes - Google Patents

Dispositif d'entraînement pour machines volumétriques oscillantes

Info

Publication number
EP2464867A1
EP2464867A1 EP10740619A EP10740619A EP2464867A1 EP 2464867 A1 EP2464867 A1 EP 2464867A1 EP 10740619 A EP10740619 A EP 10740619A EP 10740619 A EP10740619 A EP 10740619A EP 2464867 A1 EP2464867 A1 EP 2464867A1
Authority
EP
European Patent Office
Prior art keywords
piston rods
eccentric shaft
engine according
pressure plate
piston
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.)
Granted
Application number
EP10740619A
Other languages
German (de)
English (en)
Other versions
EP2464867B1 (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
Original Assignee
Prominent Dosiertechnik 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 Prominent Dosiertechnik GmbH filed Critical Prominent Dosiertechnik GmbH
Publication of EP2464867A1 publication Critical patent/EP2464867A1/fr
Application granted granted Critical
Publication of EP2464867B1 publication Critical patent/EP2464867B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston 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
    • F04B35/01Piston 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06Control
    • F04B1/07Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, 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
    • F04B49/12Control, 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
    • F04B49/123Control, 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
    • F04B49/125Control, 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
    • F04B49/126Control, 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 according to the principle of the Geradschubkur- geretriebes. At high power, or to keep the oscillating, acting on the machine foundation mass forces small, such machines are usually designed as a multi-crank engine.
  • the individual eccentric 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 engine has a large overall volume, a high weight and high production costs.
  • DE 85 21 520 describes a multi-cylinder diaphragm pump with a plurality of diaphragm pump heads, each having an actuatable by a hydraulic piston diaphragm.
  • the pump drive takes place 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.
  • 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 star-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 shaft.
  • 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 slotted links or the sliding blocks, the slotted links or the sliding blocks lying on the boundary surfaces of a regular polygon with n corners.
  • the backdrop is preferably made of hardened steel.
  • the sliding block is best made of a copper alloy, preferably made of bronze, in order to allow the lowest possible movement of the sliding block in the backdrop.
  • the disadvantages mentioned above are eliminated in that the piston forces for both the pressure stroke and the suction stroke di-. - A - rectly from the eccentric link, which is rotatably connected to the eccentric shaft are transmitted to the individual piston rods, which additional components, such as an expensive retraction rod or connecting rods, accounts and so the size of the entire engine can be significantly reduced.
  • Figure 1 shows a first embodiment of a Exzenterkulissen engine according to the
  • FIG. 2 shows a further sectional view perpendicular to the view shown in FIG. 1,
  • FIGS. 3a-c show three variants of the engine according to the invention.
  • Figures 4a + b and 5 a + b different embodiments of the connection between the piston rod and link element.
  • 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 point 1 1 of the eccentric cam will move on the circle provided with 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.
  • the slide shoe 5 surrounds 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.
  • FIG. 3 a shows 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 1 1 of the link element 6 'will move along the circle 13.
  • Figure 3b shows the already known from Figures 1 and 2 embodiment with three cylinders.
  • FIG. 3c shows a four-cylinder drive.
  • the gate element 6 is similar to the gate element 6 'of the embodiment of Figure 3a, 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 embodiment shown in FIG. 4a, the return claw 14 is screwed onto the pressure plate 5 'at the end.
  • 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 from behind, d. H. from the side facing away from the sliding block of the pressure plate 5 'screwed with this.

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)

Abstract

L'invention concerne un mécanisme d'entraînement pour des machines volumétriques oscillantes telles que par ex. des pompes à membrane, comportant un arbre à excentrique (2) et une pluralité (m) de tiges de piston, les tiges de piston étant reliées à l'arbre à excentrique de telle manière qu'une rotation de l'arbre à excentrique produit un mouvement linéaire oscillant des tiges de piston. L'invention vise à mettre en oeuvre un mécanisme d'entraînement correspondant évitant ou réduisant au moins les inconvénients cités. A cet effet, l'arbre à excentrique et la tige de piston sont reliées l'un à l'autre au moyen d'un guide de coulisse.
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 true EP2464867A1 (fr) 2012-06-20
EP2464867B1 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
DE112014002794A5 (de) * 2013-06-13 2016-03-10 Magna Powertrain Bad Homburg GmbH Radialkolbenverdichter
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
US3682044A (en) * 1970-03-31 1972-08-08 Delavan Mfg Co Inc Balanced hydraulic device
IT1086329B (it) * 1977-05-26 1985-05-28 Riva Calzoni Spa Dispositivo di aggancio dei pistoni al rotore in un motore idraulico a pistoni radiali
DE8521520U1 (de) * 1985-07-25 1987-04-16 Lewa Herbert Ott Gmbh + Co, 7250 Leonberg Mehrzylindermembranpumpe
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US5393358A (en) * 1990-12-03 1995-02-28 Nkk Corporation Method for producing abrasion-resistant steel having excellent surface property
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DE19626938A1 (de) * 1996-07-04 1998-01-08 Wanzke Lothar Sternförmige Kolben-Zylinderanordnung
DE19816044C2 (de) * 1998-04-09 2002-02-28 Bosch Gmbh Robert Radialkolbenpumpe zur Kraftstoffhochdruckerzeugung
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Also Published As

Publication number Publication date
ES2523271T3 (es) 2014-11-24
CA2762274A1 (fr) 2011-02-17
EP2464867B1 (fr) 2014-09-03
BR112012003106A8 (pt) 2017-12-05
JP2013501881A (ja) 2013-01-17
WO2011018393A1 (fr) 2011-02-17
BR112012003106A2 (pt) 2016-02-23
CN102472262A (zh) 2012-05-23
RU2012104760A (ru) 2013-09-20
US20120097025A1 (en) 2012-04-26
MY160348A (en) 2017-02-28

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