EP2085614A1 - Dispositif de pompage, en particulier pompe à double membrane avec entrainement par pompe à piston - Google Patents

Dispositif de pompage, en particulier pompe à double membrane avec entrainement par pompe à piston Download PDF

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Publication number
EP2085614A1
EP2085614A1 EP08001762A EP08001762A EP2085614A1 EP 2085614 A1 EP2085614 A1 EP 2085614A1 EP 08001762 A EP08001762 A EP 08001762A EP 08001762 A EP08001762 A EP 08001762A EP 2085614 A1 EP2085614 A1 EP 2085614A1
Authority
EP
European Patent Office
Prior art keywords
conveying device
piston
pressure
housing
control
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
EP08001762A
Other languages
German (de)
English (en)
Other versions
EP2085614B1 (fr
Inventor
Karsten Jüterbock
Daniele Foffano
Angelo Basso
Davide Galvani
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.)
J Wagner AG
Original Assignee
J Wagner AG
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 J Wagner AG filed Critical J Wagner AG
Priority to DE502008002938T priority Critical patent/DE502008002938D1/de
Priority to AT08001762T priority patent/ATE503112T1/de
Priority to EP08001762A priority patent/EP2085614B1/fr
Priority to ES08001762T priority patent/ES2363883T3/es
Priority to US12/319,829 priority patent/US8313313B2/en
Publication of EP2085614A1 publication Critical patent/EP2085614A1/fr
Application granted granted Critical
Publication of EP2085614B1 publication Critical patent/EP2085614B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel
    • 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
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • F04B43/009—Special features systems, control, safety measures leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid

Definitions

  • the invention relates to a conveying device, by means of which stored in a reservoir fluids or free-flowing materials are metered dosed to a spray gun, according to the preamble of claim 1.
  • This membrane piston pump consists of a piston rod, at the two free ends of which a diaphragm is fixedly connected to the piston rod.
  • the outer region of the respective membrane is clamped in a housing of the conveying device, so that between the firmly clamped region and the piston rod fixed to the central region of the membrane, a flexible annular region is present, through which the axial movements of the piston rod relative to the housing are compensated.
  • a reciprocating piston is mounted, sucked by the fluid or the flowable material from the reservoir into a trapping space enclosed by the membrane and the housing and dosed out of this is expressed to a spray gun.
  • a piston is fixedly connected to the piston rod between the two diaphragms.
  • the distance between the piston and the respective membrane is sized equal.
  • the piston includes, together with a first and a second housing portion, a pressure space into which compressed air is introduced via a valve in turn, so that the piston between two dead points, which are formed essentially by the first and the second housing portion, reciprocally movable is.
  • the flexibly formed annular region of the membrane should be held out of the delivery chamber and not snap into it.
  • the flexible annular area of the membrane is also sucked into the control room and held in this area in order to prevent the ring area from snapping into the delivery space.
  • the flow of the fluid or the material is independent of the flow of the working medium for the drive of the piston is adjustable, because the control room is arranged between the delivery and the pressure chambers of the drive piston and these are therefore spatially separated from each other. As a result of this spatial separation, the operational safety of the conveyor device is advantageously increased, because leaked fluid or material can be collected by the control room without this entering the pressure chamber.
  • a conveyor device 1 can be seen, through which a stored in a reservoir 9 fluid 10 can be metered or promoted to a spray gun 11 or to a discharge pump.
  • the spray gun 11 is usually carried out as a manual working device, which manually operates a user and with this the fluid 10, for example, paints, coatings, dispersions, solvents, coating material or the like., Can be applied to a surface.
  • the adjustable conveying speed of the conveying device 1 while the flow rate of the fluid 10 is controlled.
  • the conveyor may also be used to pump materials from a low to a higher pressure level, for example, to facilitate the transport of materials over longer distances in pipelines.
  • the conveyor 1 For conveying the fluid 10 from the reservoir 9 to the spray gun 11, the conveyor 1 consists of a housing 2, which is divided in its central region in two housing sections 3 and 4. Through the housing 2, a piston rod 5 is held axially movable; the piston rod 5 thus moves back and forth between two dead centers, which are formed by the housing sections 3 and 4.
  • two pistons 7 and 8 are spaced therefrom and mounted parallel to one another.
  • the outer housing portion 3 forms together with the respective piston 7 or 8 a pressure chamber 21 and.
  • a further pressure chamber 22 or 22 ' is enclosed together with the respective pistons 7 or 8.
  • a pressure line 17 or 17 ' which is connected in each case to a switching valve 18.
  • a working fluid 19 for example hydraulic oil, a gaseous substance or a gas / liquid mixture, in the pressure chamber 21 and 21 'or 22 and 22' is pressed.
  • the two faces of the pistons 7 and 8 are therefore alternately acted upon by a compressive force, which thus acts on the pistons 7 and 8 and through which the piston rod 5 between the two enclosed by the housing sections 3 and 4 and predetermined dead points is movable.
  • a delivery line 23 and 39 is provided, which opens on the input side into the reservoir 9 and communicates with this and the output side is connected to the spray gun 11.
  • two reciprocating pistons 25 are attached to the two free ends of the piston rod.
  • a membrane 12 or 13 is kept positioned.
  • nut 27 of the reciprocating piston 25 is clamped to this, whereby the membrane 12 or 13 is fixed.
  • the membranes 12 and 13 are divided into three areas, namely in a central region 14 which is fixedly connected to the piston rod 5, so that the of the Piston rod 5 outgoing axial movements are transmitted to the diaphragm 12 and 13, in an outer region 15 which is firmly clamped in the housing 2 and in a disposed between the central region 14 and the outer region 15 flexible annular portion 16 through which axial movements of the piston rod 5 is compensated.
  • the delivery line 23 opens into a delivery chamber 20, which is enclosed by the housing 2 and the respective membrane 12 and 13, respectively.
  • FIG. 1 illustrated operating position of the conveyor device 1 corresponds to a middle position.
  • the membrane 13 is moved away from the delivery chamber 20 so that a negative pressure is created in the delivery chamber 20, through which the fluid 10 accommodated in the storage container 9 is sucked out of this delivery chamber 20 assigned to the membrane 13.
  • the reciprocating piston 25 and the flexible annular region 16 of the membrane 12 act on the fluid 10 present in the delivery chamber 20, which is associated with this membrane 12, in such a way that an overpressure arises in the delivery chamber 20, through which the fluid 10 sucked into it is pressed by the delivery line 39 to the spray gun 11.
  • the transition regions between the delivery line 39 and the two delivery chambers 20 are each closed with a check valve 24 in order to ensure a reliable operation of the delivery device 1, ie, a backflow of the working medium 19 is to be avoided.
  • FIG. 2 the conveyor device 1 is shown in a second operating position.
  • the membrane 12 is in its upper dead center.
  • the fluid 10 sucked into the delivery chamber 20 assigned to the diaphragm 12 has been completely pressed out of it into the delivery line 39 on the delivery line and the delivery chamber 20 assigned to the diaphragm 13 is completely filled with fluid 10.
  • the switching valve 18 now the working fluid 19 is pressed into the pressure chambers 22 and 22 '; in the pressure chambers 21 and 21 'existing working fluid 19 is pressed out of these by the pressure lines 17', so that the two pistons 7 and 8 and the associated piston rod 5 are moved from the top dead center to the bottom dead center, and in the delivery chamber 20, which is associated with the membrane 13, filled fluid 10 is conveyed from this to the spray gun 11.
  • the conveying device 1 designed as a double-membrane piston pump generates a virtually continuous flow of the fluid 10.
  • a bellows 6 is provided, the first free end fixed to the housing portion 3 and the second free end to the piston rod fifth is fixed. The axial movements of the piston rod 5 are synchronously balanced by the bellows 6.
  • the control line 32 is connected to a measuring device 33, which is electrically coupled via a control line 34 to the switching valve 18. Furthermore, the measuring device 33 is associated with a suction device 37, through which the control room 31 can be evacuated via the control line 32, so that in the control room 31, a negative pressure is formed whose pressure level is set lower than the pressure level prevailing in the respective delivery chambers 20 during suction and conveying process.
  • a safety valve 35 is integrated, whose task is to open the control line 32 when exceeding a preset pressure limit to leak penetrated fluid 10 from the control room 31.
  • the safety valve 35 By the safety valve 35, the control room 31 is closed during the downtime of the suction device 37, whereby the prevailing in the control room 31 vacuum level does not escape. As soon as the conveyor device 1 is put back into operation and the suction device 37 has reached a predetermined negative pressure, the safety valve 35 opens. Consequently, the control chamber 31 does not have to be completely evacuated each time the conveyor device 1 is started. The tightness monitoring of the membranes 12 and 13 can rather be done immediately after switching on the conveyor 37.
  • control chamber 31 there is a negative pressure, through which the flexible annular region 16 of the membranes 12 and 13 is sucked in the direction of the control chamber 31, so that the annular region 16 is formed as a curvature 38, which is aligned in the direction of the control room 31. Due to the prevailing negative pressure within the control chamber 31, therefore, the curvature of the flexible annular region 16 of the membranes 12 or 13 is sucked into the control chamber 31, so that a folding of the flexible membrane 12 or 13 in the direction of the respective delivery chamber 20 is prevented.
  • the negative pressure state in the control room 31 can be permanently adjusted by the measuring device 33 and the suction device 37 cooperating therewith to the pressure conditions prevailing in the delivery chambers 20.
  • a pressure relief valve 36 opens into the control room 31. This can in particular the FIG. 3 be removed. Therefore, if an overpressure arises in the control room 31, it can escape through the pressure relief valve 36 to the outside into the environment.
  • the membrane 12 or 13 hairline cracks or other damage especially in the transition region between the housing 2 or the two concentric region 14 of the diaphragm 12 and 13 festklemmender reciprocating piston 25 flows from the corresponding delivery chamber 20 by the hairline cracks or damage air or fluid 10 in the control room 31, so that the set there vacuum state increases.
  • the measuring device 33 If the prevailing in the control room 31 vacuum state exceeds a preset limit, the measuring device 33 transmits an electrical signal to the switching valve 18 and to a present with this compressor 18 ', through which the working fluid 19 is pressed into the pressure lines 17 and 17', whereby this is switched off immediately.
  • the conveyor 1 is thus still.
  • the operator can check if the diaphragm 12 or 13 is damaged. This can also be taken from the meters 33 associated displays, which are visually read. Therefore, before impurities or mixtures between the fluid 10 and the inner portion of the housing 2 occur, it can be determined whether the membranes 12 and 13 are to be replaced due to the operating time and the associated loads. Such an exchange can be made quickly and on site, so that the downtime of the conveyor device 1 are limited to a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP08001762A 2008-01-31 2008-01-31 Dispositif de pompage, en particulier pompe à double membrane avec entrainement par pompe à piston Not-in-force EP2085614B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE502008002938T DE502008002938D1 (de) 2008-01-31 2008-01-31 Fördervorrichtung, insbesondere Doppel-Membran-Kolbenpumpe
AT08001762T ATE503112T1 (de) 2008-01-31 2008-01-31 Fördervorrichtung, insbesondere doppel-membran- kolbenpumpe
EP08001762A EP2085614B1 (fr) 2008-01-31 2008-01-31 Dispositif de pompage, en particulier pompe à double membrane avec entrainement par pompe à piston
ES08001762T ES2363883T3 (es) 2008-01-31 2008-01-31 Dispositivo de transporte, en particular bomba de émbolo de doble diafragma.
US12/319,829 US8313313B2 (en) 2008-01-31 2009-01-13 Pumping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08001762A EP2085614B1 (fr) 2008-01-31 2008-01-31 Dispositif de pompage, en particulier pompe à double membrane avec entrainement par pompe à piston

Publications (2)

Publication Number Publication Date
EP2085614A1 true EP2085614A1 (fr) 2009-08-05
EP2085614B1 EP2085614B1 (fr) 2011-03-23

Family

ID=39440307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08001762A Not-in-force EP2085614B1 (fr) 2008-01-31 2008-01-31 Dispositif de pompage, en particulier pompe à double membrane avec entrainement par pompe à piston

Country Status (5)

Country Link
US (1) US8313313B2 (fr)
EP (1) EP2085614B1 (fr)
AT (1) ATE503112T1 (fr)
DE (1) DE502008002938D1 (fr)
ES (1) ES2363883T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010013108A1 (de) * 2010-03-26 2011-09-29 Promera Gmbh & Co. Kg Doppelmembranpumpe
ITRE20130083A1 (it) * 2013-11-08 2015-05-09 Imovilli Pompe S R L Pompa volumetrica alternativa a membrana per liquidi
EP3115607A1 (fr) * 2015-07-10 2017-01-11 J. Wagner AG Pompe a double membrane

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009308070B2 (en) 2008-10-22 2015-08-20 Graco Minnesota Inc. Portable airless sprayer
PL3567251T3 (pl) 2014-02-07 2021-07-19 Graco Minnesota Inc. Układ napędowy do bezpulsacyjnej pompy wyporowej
US11007545B2 (en) 2017-01-15 2021-05-18 Graco Minnesota Inc. Handheld airless paint sprayer repair
US11022106B2 (en) * 2018-01-09 2021-06-01 Graco Minnesota Inc. High-pressure positive displacement plunger pump
JP2019183839A (ja) * 2018-04-02 2019-10-24 グラコ ミネソタ インコーポレーテッド ダイアフラムポンプキャビティ内の減圧シフト
EP3774069A1 (fr) 2018-04-10 2021-02-17 Graco Minnesota Inc. Pulvérisateur sans air portatif pour peintures et autres revêtements
CN112135970B (zh) * 2018-05-25 2023-07-07 固瑞克明尼苏达有限公司 气动浪涌抑制器
US20220234062A1 (en) 2019-05-31 2022-07-28 Graco Minnesota Inc. Handheld fluid sprayer
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
US10968903B1 (en) 2020-06-04 2021-04-06 Graco Minnesota Inc. Handheld sanitary fluid sprayer having resilient polymer pump cylinder
US10926275B1 (en) 2020-06-25 2021-02-23 Graco Minnesota Inc. Electrostatic handheld sprayer
US11867169B2 (en) * 2021-11-08 2024-01-09 Pdc Machines, Inc. High-throughput diaphragm compressor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008984A (en) * 1975-10-23 1977-02-22 Scholle William R Pump apparatus
DE3146222A1 (de) * 1981-11-21 1983-06-01 Franz 6305 Buseck Orlita Membranpumpe mit einer membranbruchanzeigevorrichtung
DE4027027A1 (de) * 1990-08-27 1992-03-05 Prominent Dosiertechnik Gmbh Verfahren und vorrichtung zur erkennung einer bruchstelle einer membran
US6158982A (en) * 1996-05-17 2000-12-12 Wilden Pump & Engineering Co. Amplified pressure air driven diaphragm pump and pressure relief valve therefor
EP1384891A1 (fr) * 2002-07-24 2004-01-28 ProMinent Dosiertechnik GmbH Membrane de sécurité pour une pompe à membrane
EP1712796A1 (fr) 2005-04-12 2006-10-18 J. Wagner AG Pompe à mebrane

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647733A (en) * 1995-12-01 1997-07-15 Pulsafeeder Inc. Diaphragm metering pump having modular construction
US20060002571A1 (en) * 2004-06-30 2006-01-05 International Business Machines Corporation Self-adjusted car stereo system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008984A (en) * 1975-10-23 1977-02-22 Scholle William R Pump apparatus
DE3146222A1 (de) * 1981-11-21 1983-06-01 Franz 6305 Buseck Orlita Membranpumpe mit einer membranbruchanzeigevorrichtung
DE4027027A1 (de) * 1990-08-27 1992-03-05 Prominent Dosiertechnik Gmbh Verfahren und vorrichtung zur erkennung einer bruchstelle einer membran
US6158982A (en) * 1996-05-17 2000-12-12 Wilden Pump & Engineering Co. Amplified pressure air driven diaphragm pump and pressure relief valve therefor
EP1384891A1 (fr) * 2002-07-24 2004-01-28 ProMinent Dosiertechnik GmbH Membrane de sécurité pour une pompe à membrane
EP1712796A1 (fr) 2005-04-12 2006-10-18 J. Wagner AG Pompe à mebrane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010013108A1 (de) * 2010-03-26 2011-09-29 Promera Gmbh & Co. Kg Doppelmembranpumpe
ITRE20130083A1 (it) * 2013-11-08 2015-05-09 Imovilli Pompe S R L Pompa volumetrica alternativa a membrana per liquidi
EP2871362A1 (fr) * 2013-11-08 2015-05-13 Imovilli Pompe S.R.L. Pompe à diaphragme volumétrique alternative pour liquides
EP3115607A1 (fr) * 2015-07-10 2017-01-11 J. Wagner AG Pompe a double membrane
US10738769B2 (en) 2015-07-10 2020-08-11 Wagner International Ag Double diaphragm pump

Also Published As

Publication number Publication date
US8313313B2 (en) 2012-11-20
EP2085614B1 (fr) 2011-03-23
DE502008002938D1 (de) 2011-05-05
ATE503112T1 (de) 2011-04-15
ES2363883T3 (es) 2011-08-18
US20090196771A1 (en) 2009-08-06

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