EP2171276A1 - Membranpumpe - Google Patents
MembranpumpeInfo
- Publication number
- EP2171276A1 EP2171276A1 EP08716539A EP08716539A EP2171276A1 EP 2171276 A1 EP2171276 A1 EP 2171276A1 EP 08716539 A EP08716539 A EP 08716539A EP 08716539 A EP08716539 A EP 08716539A EP 2171276 A1 EP2171276 A1 EP 2171276A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting rod
- diaphragm pump
- pump according
- rod end
- drive
- 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
Links
- 230000033001 locomotion Effects 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000000806 elastomer Substances 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 2
- 238000004073 vulcanization Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000000543 intermediate Substances 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000013464 silicone adhesive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
- F04B43/026—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel each plate-like pumping flexible member working in its own pumping chamber
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
- F04B53/145—Rod shock absorber
Definitions
- the invention relates to a diaphragm pump with at least two pumpheads arranged around a central eccentric pump drive, the diaphragms being connected in drive connection to the eccentric pump drive via connecting rods.
- Such diaphragm pumps are already known. All diaphragms of the pump heads are moved back and forth with an eccentric and a connecting rod. The membrane centers are all in the same plane, so that such pumps have a compact design.
- the inner connecting rod ends are pivotally connected to the eccentric drive, wherein in the region of the joint pivotal movement of the connecting rod occurs. This joint is exposed to compressive and tensile loads as well as bending loads due to the pivoting movements of the connecting rods. As a result, increased operating noise may occur due to wear and, moreover, this has a detrimental effect on the service life.
- Object of the present invention is to provide a diaphragm pump of the type mentioned, which can be produced more cost-effectively with fewer components with compact dimensions, has a low noise emission even after a long period of operation and has a high reliability.
- the eccentric pump drive has a connecting rod, with which the connecting rod ends are connected via elastic intermediate elements.
- This elastic connection between the connecting rod and eccentric drive is the one hand in a simple way required Gelenkfunktxon given and beyond a structure-borne sound transmission between the drive and the connecting rods is attenuated and thus prevents sound propagation on the one hand on the membranes and the pump heads, on the other hand also on the eccentric, the shaft, the bearing and the housing.
- the elastic intermediate element practically forms an elastomer joint and is permanently free of play and thus also contributes to the fact that the pump produces no disturbing noise even after a long period of operation and is maintenance-free.
- the diaphragm pump is also suitable for high pumping pressures.
- the spring stiffness of the intermediate element m axial connecting rod direction is so large and thus the spring travel correspondingly small.
- the axial extent of the intermediate elements may be small.
- An advantageous embodiment of the invention provides that the connecting rod ring on the outside edge-open recesses each for at least partially receiving the connected to an intermediate element connecting rod end.
- connection point is predetermined.
- the recesses on the one hand and the connecting rod ends on the other hand are dimensioned such that there is sufficient clearance between them for the elastic intermediate element and the above-described joint function.
- the intermediate element forms an intermediate layer between the recess wall and the connecting rod end region.
- the vulcanized connection with the inner wall of the recesses and the end portion of the connecting rod.
- the connecting rod and the connecting rod can be directly connected with vulcanized elastomer.
- the connecting rod ring and the connecting rod elastically connected thereto form a structural unit.
- the diaphragm pump has four pump heads arranged around the central eccentric pump drive. The connecting rods of all pump heads are arranged in one plane.
- the membrane centers are all in the same plane, so that the pump is compact and can be produced inexpensively with fewer components.
- FIG. 1 shows a diaphragm pump with four pump heads and a central eccentric pump drive in cross-sectional view
- Fig. 2 is a somewhat schematic representation of a four-headed diaphragm pump
- FIG. 3 a connecting rod ring with recesses open on the outside for intermediate elements and connecting rod ends or connecting parts, FIG.
- FIG. 4 is an enlarged detail view in the region of a recess in the connecting rod ring for receiving an intermediate element and a connecting rod end and
- Fig. 5 is a schematic representation of a four-headed diaphragm pump with the interconnection of the suction lines and pressure lines.
- a diaphragm pump 1 shown in FIG. 1 is shown in cross-section and has four pump heads 3 arranged around a central eccentric pump drive 2.
- the membranes 4 are in each case via connecting rods 5 with the eccentric pump drive 2 in drive connection.
- the eccentric pump drive 2 has a connecting rod ring 6, in which a circumferential eccentric 7 is arranged.
- the connecting rod ring 6 may preferably be formed on the outside around or have a different outer shape.
- the construction of the diaphragm pump is also well m in the schematic representation of FIG. 2 recognizable.
- the elastic intermediate element should therefore have a high spring stiffness in this direction of loading. This can be achieved by the axial extent of the intermediate elements 10 is comparatively small. In contrast, in order to achieve a low-resistance Soauslenkiana the connecting rod, the radial extent of the elastic intermediate element, ie transverse to the longitudinal extent the connecting rod 5, comparatively large.
- the radial extension of the intermediate elements 10 corresponds to that of the adjoining connecting rod 5.
- the intermediate elements 10 may also have a smaller diameter or annular constrictions in order to improve the lateral mobility.
- the connecting rods 5 can be vulcanized with their connecting rod ends 9 in a simple manner on the outside of the connecting rod ring 6.
- the vulcanized material on both sides forms the intermediate element 10. It is also possible to produce an elastic connection between the connecting rods and the connecting rod ring by silicone adhesive or a silicone molding.
- the elastic intermediate elements 10 may therefore be formed from a vulcanized elastomer or from a castable elastomer such as silicone. Thermoplastic elastomers can also be used for the intermediate elements 10.
- the connecting rod ring 6 on the outside edge-open recesses 11 each for at least partially receiving the connected to an intermediate element 10 connecting rod end 9.
- the intermediate element 10 forms an intermediate layer between the recess wall 12 and the connecting rod end 9.
- the recesses 11 are formed to approximately trough-shaped. Also in the embodiment shown in Fig.
- the connecting rod 6 in the connection areas of the connecting rod 5 open-edged recesses 11a, which have extensions in the outer region. Even with this design, high compressive forces can be transmitted without any annoying suspension of the connecting rod ends. On the other hand, due to the recess extensions in the outer area, the required pivoting movement of the connecting rod ends can take place with little resistance.
- the recesses have a cross-sectionally approximately semicircular cross-section and the projections 16, as shown in Fig. 3, for example, have a spherical cross-section, and further these projections 16 are each completely or substantially completely within the recess extensions are formed in the outer area, which facilitate the pivoting movement of the connecting rod ends.
- the outer, diaphragm-side connecting rod end 9 is not directly connected to the membrane, but it is additionally provided here a Pleuelverinrung 13, wherein the Pleuelverinrung 13 has a threaded bolt 15 for screwing into a threaded bore 14 of the connecting rod 5.
- the membranes 4 have a connected to the elastic membrane part, mushroom-shaped head, in particular made of metal, each having a threaded bolt 15a for screwing m the connecting rod threaded bore 14 or in an outer threaded bore of the connecting rod extension 13.
- the connecting rod ends 9 m rubber-elastic material are embedded, which is located in the recesses 11.
- the intermediate element 10 which is vulcanized into the recesses 10 and to the connecting rod ends 9.
- silicone adhesives can also be used as the rubber-elastic material.
- the connecting rod ring 6 is preferably designed as an annular disc, wherein the radially outwardly open-edged recesses 11, 11a are formed groove-shaped. In the transverse direction, the recesses 11, 11a may extend over a partial area of the annular disk thickness or over the entire pane thickness, so that they are also open to the flat sides of the connecting rod disk.
- the projections 16 may be cylindrical transverse bolts with a thickness corresponding to the disk thickness or shorter, so that a correspondingly large support surface is available.
- the projections 16 can also be designed as ball heads, which can then also be glued or vulcanized into the preferably spherical recesses 11a. Between the ball head and the inner wall of the recess 11 a, the intermediate element 10 is formed as an elastic intermediate layer.
- the recesses 11a in the connecting rod ring 6 may be approximately hemispherical or hemispherical disk-shaped and the projections 16 may be in the form of a spherical head, a round disk or a cylinder arranged transversely, the recesses 11a and the requirements being met. 16 dimensioned so that the molding preferably completely fits into the recess.
- the connecting rod ends 9 are rounded, but have no cross-sectional enlargement. However, they engage comparatively deep in the elastic intermediate element 10, so that a secure holder is given.
- the axial distance a is substantially smaller than the lateral distance, in particular the radial distance b, wherein this lateral distance to the outer end of the connecting rod still increases significantly.
- the thin material layer in the axial direction gives much less on pressurization than a material layer of substantially greater thickness.
- the recesses 11 in the connecting rod ring 6 have a shape deviating from a part-circular cross-sectional shape with cylindrical or spherical or spherical disk-shaped projections 16.
- the axial distance a of the connecting rod end 9 to the radial distance b of the connecting rod end in each case from the inner wall 12 the recess may be about 1: 1 to about 1: 5.
- Fig. 5 is still shown schematically that the suction lines 17 on the one hand and the pressure lines 18 of the pump heads 3 on the other hand are fluidly connected to each other.
- several working elements diaphragms 4
- pump heads 3 for example, four pump heads and the drive torque is subjected to only small Schwan- "1 O kisme, so that comparatively small drive motors for the eccentric pump drive 2 can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007028351A DE102007028351B4 (de) | 2007-06-20 | 2007-06-20 | Membranpumpe |
PCT/EP2008/002044 WO2008154971A1 (de) | 2007-06-20 | 2008-03-14 | Membranpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2171276A1 true EP2171276A1 (de) | 2010-04-07 |
EP2171276B1 EP2171276B1 (de) | 2013-04-10 |
Family
ID=39400998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08716539.5A Active EP2171276B1 (de) | 2007-06-20 | 2008-03-14 | Membranpumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US8474365B2 (de) |
EP (1) | EP2171276B1 (de) |
JP (1) | JP5383673B2 (de) |
DE (1) | DE102007028351B4 (de) |
WO (1) | WO2008154971A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2514973B1 (de) * | 2009-12-17 | 2021-03-31 | Electro Ad, S.L. | Vakuum-, druck- oder flüssigkeitspumpe |
US10371132B2 (en) | 2017-02-10 | 2019-08-06 | Peopleflo Manufacturing, Inc. | Reciprocating pump and transmission assembly having a one-way clutch |
KR101956218B1 (ko) * | 2017-03-06 | 2019-03-08 | 윤병일 | 무맥동 정량 펌프 |
CN107100830A (zh) * | 2017-04-20 | 2017-08-29 | 佛山市三水区广顺自动化设备有限公司 | 一种电动三缸活塞式隔膜泵 |
US11221004B2 (en) * | 2017-07-12 | 2022-01-11 | Blue-White Industries, Ltd. | Multiple diaphragm pump |
CN109441788A (zh) * | 2018-12-27 | 2019-03-08 | 深圳市威曼斯特科技有限公司 | 环绕式真空泵 |
DE102020125757A1 (de) | 2020-10-01 | 2022-04-07 | Bürkert Werke GmbH & Co. KG | Dosierpumpe |
CN112696341A (zh) * | 2020-12-21 | 2021-04-23 | 深圳安吉尔饮水产业集团有限公司 | 隔膜增压泵的泵头、隔膜增压泵、水处理装置 |
DE102022134559A1 (de) | 2022-12-22 | 2024-06-27 | Lear Corporation | Pumpe |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5123364Y2 (de) * | 1972-03-29 | 1976-06-16 | ||
GB1548888A (en) | 1975-04-15 | 1979-07-18 | Selwood Ltd William R | Rumps |
DE2614293A1 (de) * | 1975-04-15 | 1976-10-28 | Selwood Ltd William R | Pumpe |
JPS61244884A (ja) * | 1985-04-24 | 1986-10-31 | Hitachi Ltd | バキユ−ムポンプ |
GB8517150D0 (en) | 1985-07-05 | 1985-08-14 | Lam M L | Pumps |
CA1334494C (en) | 1988-01-11 | 1995-02-21 | Ken Ozawa | Variable displacement diaphragm pump |
DE3900327A1 (de) * | 1989-01-07 | 1990-07-12 | Bosch Gmbh Robert | Vorrichtung fuer ein antiblockiersystem |
NL9100629A (nl) | 1991-04-10 | 1992-11-02 | Gentec Bv | Radiale pomp. |
JP3165169B2 (ja) * | 1991-04-19 | 2001-05-14 | 株式会社ブリヂストン | スタビライザーリンクロッド |
DE4241825A1 (de) | 1992-12-11 | 1994-06-16 | Teves Gmbh Alfred | Geräuschreduzierte Hochdruckpumpe, insbesondere für geregelte Bremsanlagen |
DE4241827A1 (de) * | 1992-12-11 | 1994-06-16 | Teves Gmbh Alfred | Geräuschreduziertes Pumpenaggregat, insbesondere für geregelte Bremsanlagen |
US5437218A (en) | 1994-04-04 | 1995-08-01 | Pcm Pompes | Diaphragm pump having variable displacement |
DE4433068C2 (de) * | 1994-09-16 | 1998-05-07 | Hewlett Packard Gmbh | Mehrverdichter-Pumpe mit einer Pleuelvorrichtung |
GB2301151B (en) * | 1995-05-15 | 1999-02-03 | Pirelli Tyres Ltd | Diaphragm pump |
DE10347715A1 (de) * | 2003-10-14 | 2005-05-12 | Zahnradfabrik Friedrichshafen | Radialkolbenpumpe |
-
2007
- 2007-06-20 DE DE102007028351A patent/DE102007028351B4/de not_active Withdrawn - After Issue
-
2008
- 2008-03-14 EP EP08716539.5A patent/EP2171276B1/de active Active
- 2008-03-14 JP JP2010512535A patent/JP5383673B2/ja active Active
- 2008-03-14 US US12/664,951 patent/US8474365B2/en active Active
- 2008-03-14 WO PCT/EP2008/002044 patent/WO2008154971A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2008154971A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2171276B1 (de) | 2013-04-10 |
DE102007028351B4 (de) | 2013-01-17 |
JP5383673B2 (ja) | 2014-01-08 |
US20100183462A1 (en) | 2010-07-22 |
WO2008154971A1 (de) | 2008-12-24 |
US8474365B2 (en) | 2013-07-02 |
JP2010530489A (ja) | 2010-09-09 |
DE102007028351A1 (de) | 2008-12-24 |
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