EP0716229B1 - Doppelmembranpumpe - Google Patents

Doppelmembranpumpe Download PDF

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Publication number
EP0716229B1
EP0716229B1 EP95118226A EP95118226A EP0716229B1 EP 0716229 B1 EP0716229 B1 EP 0716229B1 EP 95118226 A EP95118226 A EP 95118226A EP 95118226 A EP95118226 A EP 95118226A EP 0716229 B1 EP0716229 B1 EP 0716229B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm pump
double diaphragm
pump according
housing section
diaphragms
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.)
Expired - Lifetime
Application number
EP95118226A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0716229A1 (de
Inventor
Volker Dipl.-Ing. Stapelfeldt
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.)
Abel & Co Handels- and Verwaltungsgesellschaft GmbH
Abel GmbH and Co KG
Original Assignee
Abel & Co Handels- and Verwaltungsgesellschaft GmbH
Abel GmbH and Co KG
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 Abel & Co Handels- and Verwaltungsgesellschaft GmbH, Abel GmbH and Co KG filed Critical Abel & Co Handels- and Verwaltungsgesellschaft GmbH
Publication of EP0716229A1 publication Critical patent/EP0716229A1/de
Application granted granted Critical
Publication of EP0716229B1 publication Critical patent/EP0716229B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18248—Crank and slide
    • Y10T74/18256—Slidable connections [e.g., scotch yoke]

Definitions

  • the invention relates to a double-acting diaphragm pump (Double diaphragm pump) according to the generic term of Claim 1.
  • a double diaphragm pump has become known from DE 32 06 242 with a centrally mounted in a housing Pistons with attached to each of its free ends, each a displacement membrane impinged on the pump membrane.
  • the Displacement spaces are with the suction nozzle on the one hand and the pressure port on the other hand connected via check valves.
  • a device is provided for alternating Applying the on to the displacement rooms arranged opposite side of the membranes Pressure chambers for the drive medium. With alternate When exposed to compressed air, the membranes become the same direction moves, the compressed air moving a membrane towards Product space moves and the medium is pumped into the discharge nozzle repressed; the other membrane has an intake stroke out. The pumped medium is therefore compressed air ousted and promoted.
  • Such pumps have a number of advantages. They are safe to run dry and self-priming. A brief overload is also not critical. They are not shaft seals required and no rotating parts in the product stream.
  • the pump sensitive to solids. Impurities and solids can be conveyed in the product stream will. For the rest, displacement is also the case with such a pump can be used for shear sensitive media.
  • the invention has for its object to provide a double diaphragm pump, the is simply constructed and works reliably, and despite the higher pump pressures can be operated with high efficiency.
  • the double diaphragm pump according to the invention is with mechanically driven diaphragms Mistake.
  • the invention provides a guide frame on the opposite sides, the piston rods connected to the membranes are connected.
  • a sliding block is mounted and guided by means of a linear guide.
  • the backdrop stone in turn supports the journal of a front crank, which is connected to the drive motor connected is.
  • Two guides, preferably round rods, are used for linear guidance used.
  • the crank pin is preferably mounted in the sliding block by means of a roller bearing.
  • a roller bearing Of the Sliding block inevitably follows the circular motion of the crank pin, remains but oriented in the same position due to the forced guidance in the management frame, causing it to oscillate along the guides. This gives the guides an oscillating movement in the direction of the positively guided piston rods. On in this way a low-friction, yet mechanically simple transmission of the Rotary movement of the drive motor on the linearly adjustable piston rods reached.
  • the sliding block is preferably guided by means of plastic plain bearings, as is that Piston rod in the corresponding guide holes in the housing.
  • the guide frame with the sliding block is enclosed within a Housing section arranged, the piston rods via plastic sliding bushes are sealed to the outside. If a membrane breaks, it prevents that medium gets into the drive.
  • the housing section has a lateral approach in which the Bearing for the front crank is arranged.
  • the housing section can be a Form the system for the membrane.
  • the membranes have approximately the shape of a Ball cap. This shape ensures that there are no wrinkles in the membrane stroke Membranes are formed, which otherwise easily lead to damage after a certain operating time can.
  • a double diaphragm pump is created, even at higher back pressures due to the mechanical Forced operation works with a high degree of efficiency. It can be driven with an almost constant characteristic curve, comparable to piston pumps, with a certain Restriction made by the elasticity of the membranes must become.
  • the pump according to the invention can therefore be a Deliver the specified delivery rate at a specified pressure. It is small and can be operated quietly
  • the housing of the pump can be made of many materials, for example aluminum, cast iron or stainless steel, each according to the conditions of use. It can also be a plastic case used, for example made of polypropylene, Polytetrafluoroethylene, polyvinylidene fluoride or the like. To protect the membranes against abrasive and against A coating can be used to protect aggressive media PTFE film can be made. Such a membrane is however became known from the G 84 32 2045.
  • the double diaphragm pump shown in Figures 1 and 2 has a first housing section 10, which is box-like and a tubular one going out to one side Approach 12 has.
  • Section 10 and Approach 12 are in one piece shaped, for example from cast aluminum, cast iron, Stainless steel or the like.
  • the flanges 14, 16 are assigned to circular membrane housing sections 22 and 24, which are screwed to the flanges 14, 16.
  • membranes 26 and 28 are clamped in these parts, which have an O-ring-shaped cross section on the circumference, as shown at 30 and 32, respectively. You sit in appropriate Ring grooves of flange 14, 16 or housing section 22, 24, so that the membranes 26, 28 are held securely.
  • the membranes 26, 28 are made of a suitable elastomer and can go to the displacement space 34 or 36 with PTFE be coated. They are also through fabric inserts reinforced. The membranes 26, 28 have an approximately spherical cap shape. Therefore, they do not wrinkle during their stroke.
  • the membranes 26, 28 divide the Interior of the membrane housing sections 22, 24 in one Displacement space 34, 36 and a compensation space 38 or 40.
  • the displacement spaces 34, 36 are over corresponding Line sections 42, 44 and ball check valves 46, 48 connected to a suction nozzle 50. You are also via ball check valves 52, 54 and line sections 56, 58 connected to a pressure port 60.
  • the compensation rooms 38, 40 are connected to one another via a connecting line 62 connected.
  • housing section 10 In the housing section 10 is an approximately rectangular guide frame 64 arranged on the opposite Ends of piston rods 66, 68 are attached.
  • the piston rods extend through slide bearings 70, 72 of the housing section 10, lined with plastic bushings 74, 75 are.
  • the piston rods 66, 68 connected to the membrane 26 or 28.
  • a disc 80 or 82 is seated on the Circumference is rounded between a shoulder of the piston rod 66, 68 and the membrane section, whereby the relevant Membrane section is securely clamped.
  • Two round bars are spaced apart in parallel in the guide frame 64 84, 86 attached. They consist of a suitable one Material that is manufactured and available in bars.
  • the guide rods 84, 86 extend through guide bores of a sliding block 88.
  • the guide holes are lined with plastic bushings 90 and 92 respectively.
  • crankshaft 94 rotatably supported in the neck 12.
  • the Crankshaft 94 is connected to an output shaft via a clutch 96 98 of an electric motor, not shown 100 in drive connection.
  • a pin 102 of the crankshaft 94 is centered by means of a roller bearing 104 Drilled through the sliding block 88 stored.
  • the housing section is for better accessibility 10 on the front side of the crankshaft 94 through a plate 106 completed, which can be removed.
  • crankshaft 94 If the crankshaft 94 is driven, the sliding block 98 inevitably taken. He runs a circling Movement off, but remains up due to the positive guidance the guide rods 84, 86 in the position.
  • the leadership framework 84 is in turn through the piston rods 66, 68 positively guided. This will cause the rotary motion of the crankshaft 94 in an oscillating movement of the piston rods 66, 68 converted.
  • the stroke of the piston rods 66, 68 and so the diaphragms 26, 28 is by the length of the crank arm certainly. If the stroke is to be changed, one is to use another crankshaft 94.
  • Fig. 1 on the left has the displacement space 34 maximum volume.
  • the membrane 26 is approximately on the housing section 18, however, does not touch it. Touching should be avoided if possible, because it can damage the membrane.
  • the membrane 28, however, has reached the dead center of its pressure stroke.
  • a suitable sensor e.g. a pressure sensor
  • the displacement space 34, 36 facing away from the Membranes 26, 28 are monitored to identify a hole or hole Determine the membrane breakage in good time.
  • a suitable sensor e.g. a pressure sensor
  • Such one Pressure sensor can be connected to the connecting line 62 be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
EP95118226A 1994-12-08 1995-11-20 Doppelmembranpumpe Expired - Lifetime EP0716229B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4443778 1994-12-08
DE4443778A DE4443778A1 (de) 1994-12-08 1994-12-08 Doppelmembranpumpe

Publications (2)

Publication Number Publication Date
EP0716229A1 EP0716229A1 (de) 1996-06-12
EP0716229B1 true EP0716229B1 (de) 1998-06-24

Family

ID=6535323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118226A Expired - Lifetime EP0716229B1 (de) 1994-12-08 1995-11-20 Doppelmembranpumpe

Country Status (7)

Country Link
US (1) US5649809A (pt)
EP (1) EP0716229B1 (pt)
JP (1) JP3210851B2 (pt)
AT (1) ATE167728T1 (pt)
BR (1) BR9505698A (pt)
DE (2) DE4443778A1 (pt)
ES (1) ES2119292T3 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518573A (zh) * 2011-12-14 2012-06-27 江南大学 可调式定量注射泵

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US6481986B1 (en) 1995-08-03 2002-11-19 Medela Holding Ag Vacuum adjustment mechanism particularly adapted for a breastpump
TW539918B (en) * 1997-05-27 2003-07-01 Tokyo Electron Ltd Removal of photoresist and photoresist residue from semiconductors using supercritical carbon dioxide process
IT1304282B1 (it) * 1998-05-04 2001-03-13 Annovi Reverberi Spa Gruppo pompante a membrana ad elevata portata.
US6257845B1 (en) 1998-07-14 2001-07-10 Wilden Pump & Engineering Co. Air driven pumps and components therefor
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DE10024546B4 (de) * 2000-05-18 2004-07-15 Lewa Herbert Ott Gmbh + Co Mehrfachkurbeltrieb für Triplexmembranpumpen
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KR100750018B1 (ko) * 2000-07-26 2007-08-16 동경 엘렉트론 주식회사 반도체 기판의 처리를 위한 고압 챔버 및 반도체 기판의고압 처리를 위한 장치
DE10133349B4 (de) * 2001-07-15 2006-04-06 Harald Janzen Vierkammer-Membranpumpe
JP4958121B2 (ja) * 2001-10-24 2012-06-20 株式会社タクミナ 往復動ポンプおよび逆止弁
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JP5265341B2 (ja) * 2005-04-21 2013-08-14 インダストリアル リサーチ リミテッド 圧力波発生器
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WO2013022831A1 (en) * 2011-08-05 2013-02-14 Flow Control Llc. Human powered irrigation diaphragm pump
CN202707394U (zh) * 2012-04-27 2013-01-30 陈绍丽 单连杆联动双腔式计量泵
KR101449300B1 (ko) * 2013-06-14 2014-10-08 양승빈 다이어프램 펌프
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CN110578674A (zh) * 2019-09-16 2019-12-17 嘉善边锋机械有限公司 电动隔膜泵
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CN115362316A (zh) 2020-03-31 2022-11-18 固瑞克明尼苏达有限公司 电动操作的往复式泵
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518573A (zh) * 2011-12-14 2012-06-27 江南大学 可调式定量注射泵
CN102518573B (zh) * 2011-12-14 2014-11-26 江南大学 可调式定量注射泵

Also Published As

Publication number Publication date
BR9505698A (pt) 1997-11-11
JPH08232847A (ja) 1996-09-10
EP0716229A1 (de) 1996-06-12
US5649809A (en) 1997-07-22
JP3210851B2 (ja) 2001-09-25
DE59502649D1 (de) 1998-07-30
DE4443778A1 (de) 1996-06-20
ES2119292T3 (es) 1998-10-01
ATE167728T1 (de) 1998-07-15

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