EP1515044A1 - Membranpumpe für Fluide - Google Patents

Membranpumpe für Fluide Download PDF

Info

Publication number
EP1515044A1
EP1515044A1 EP03425591A EP03425591A EP1515044A1 EP 1515044 A1 EP1515044 A1 EP 1515044A1 EP 03425591 A EP03425591 A EP 03425591A EP 03425591 A EP03425591 A EP 03425591A EP 1515044 A1 EP1515044 A1 EP 1515044A1
Authority
EP
European Patent Office
Prior art keywords
diaphragm pump
membranes
rod
pump according
membrane
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.)
Withdrawn
Application number
EP03425591A
Other languages
English (en)
French (fr)
Inventor
Franco De Bernardi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP03425591A priority Critical patent/EP1515044A1/de
Priority to IT001336A priority patent/ITMI20041336A1/it
Publication of EP1515044A1 publication Critical patent/EP1515044A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F04B43/04—Pumps having electric drive
    • 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
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0202—Linear speed of the piston

Definitions

  • This invention relates to a diaphragm pump for fluids including at least one chamber, a wall of which is at least partially made up from a flexible membrane that can be displaced towards and away from a rigid opposite chamber wall by means of a working operative fluid acting upon the back of the membrane, with respect to said rigid wall, pressed by a sliding piston on the interior of a relative cylinder connecting with the back of the membrane and containing said operative fluid, said chamber being provided with a suction opening and a discharge opening, each provided with respective valve means.
  • diaphragm pumps are used for pumping different types of fluids, including dense fluids, with many particles in suspension.
  • they are used in the chemical industry for the pumping of varnishes, plasters, creams, jellies and other difficult-to-handle fluids containing chemical agents in general, in the ceramic industry for the pumping of ceramic water suspended clay, in the textile industry for the pumping of bonds, latex, inks, in the foodstuff industry for the pumping of fruit and vegetable pulps, sugar solutions, animal offal as well as in ecology for the pumping of lime, thick sludge and the like.
  • a first type of known diaphragm pump uses compressed air that, by means of suitable exchange valves, alternately operates two opposing membranes.
  • This known type of diaphragm pump requires rather high powered air compressors for the supply of the compressed air with overall modest efficiency of the system. Moreover, this type of pump only allows heads compatible with the maximum air pressures available by means of the compressor to be obtained.
  • a second type of known diaphragm pump for operating the opposing diaphragms, instead of air, uses a hydraulic fluid that is put under pressure by secondary cylinders whose pistons are activated by an electric rotary motor through a mechanism made up of a reducer and a crank system.
  • Such pumps resulting rather complex, expensive and rigid in operation, are only used when strictly necessary.
  • althrough allowing delivery heads greater than those of the known pumps already mentioned, they have the disadvantage of being constant flow pumps.
  • the object of the present invention is to overcome the drawbacks reported in relation to the above-mentioned known types of diaphragm pumps by proposing a diaphragm pump whose operating characteristics, particularly flow and delivery pressure, may be varied and also controlled according to a pre-established program.
  • the diaphragm pump comprises two opposing hollow bodies 1 and 2 each including a flange portion 3 and 4 through which said bodies are connected to an intermediate tubular body 5.
  • Each hollow body includes a respective chamber 1a and 2a, in which the relative diaphragms 1b and 2b operate, provided with a rigid central part 1c and 2c respectively.
  • the chambers are equipped with suction and delivery openings indicated as A1, M1 and as A2 and M2 respectively, each of these is equipped with a respective conventional type unidirectional valve.
  • the membranes are connected to each other by a rigid rectilinear rod 6 fixed to their rigid part 1c and 2c respectively and can be moved to and from a rigid wall 1d and 2d of the chambers 1a and 2a.
  • the rod 6 extends along the longitudinal axis X-X of the pump and axially crosses the flange parts 3 and 4 as well as the intermediate tubular body 5.
  • flange parts 3 and 4 define respective inner cylindrical chambers 7 and 8 in which respective pistons 9 and 10 are placed, connected to each other by means of a tubular rod 11 housed in the intermediate tubular body 5 with the interposition of bearings 12 and 13.
  • Pistons 9 and 10 are equipped with a respective axial opening through which the rigid rod 6 that connects the membranes passes.
  • pistons 9 and 10 are provided with respective sealing elements 14 and 15 with respect to the wall of the cylindrical chambers 7 and 8 and with further sealing elements 16 and 17 with respect to the rigid rod 6.
  • the tubular rod 11 is directly connected to the movable armature 18 of a linear electric motor or actuator, known per se , whose stationary armature 19 is housed in the inner wall of the intermediate tubular body 5.
  • a movement sensor is also provided, schematically indicated by 20 and 21, by means of which and by means of a connected not shown electronic apparatus, the displacement speed of the movable armature 18 of the linear actuator, the pump stroke as well as the running inversion are controlled and operated conventionally.
  • An operative liquid which is preferably water with a small percentage of additives such as glycol, for example, is placed in of the cylindrical chambers 7 and 8 which are in direct connection with the back side of the membranes 1b and 2b, respectively.
  • the operation of the pump occurs by means of the axial motion of the movable armature 18 of the linear motor that is directly transmitted, without intermediate mechanisms, to the tubular rod 11 that controls the axial movement of pistons 9 and 10.
  • the hollow bodies 1 and 2 have instead flange parts 22 and 23 that extend within the axial cavity 24 of the intermediate tubular body, indicated by 25, where they are positioned with the respective ends 22b and 23b frontally opposed and spaced apart.
  • the piston 28 consequently forms two chambers, 29a and 29b, that are in fluid connection with the back side of the respective membranes 1b and 2b of the bodies 1 and 2.
  • the movable armature 18 of the linear motor or actuator is directly fixed to the piston 28 while the stationary part 19 is fixed to the intermediate tubular body 25.
  • An additional sealing gasket 32 is placed between the rod 6 connecting the membranes and the piston 28 that is axially crossed by said rod 6.
  • the membrane operative fluid which in this embodiment is also water with the addition of a small percentage of glycol, is placed in the chambers 29a and 29b.
  • the operative fluid is preferibly contained in a tank 33 which is connected to the areas at the back side of the membranes 1b and 2b by conduits 34 and 35 equipped with conventional unidirectional valve means, as a whole indicated by 36.
  • the operation of the pump occurs by means of the linear motor whose movable armature 18 is connected directly to the piston 28 to which a to-and-fro movement is given, whose speed and stroke is controlled by a conventional electronic control apparatus, not shown, set by means of a movement sensor indicated by 20, which is completely equivalent to that of the embodiment of figure 1.
  • the piston 28 alternately puts under pressure the operative liquid in the cylinders 29a and 29b that determine the alternate movement of the membranes and therefore the pumping action.
  • the pistons 9 and 10 that are connected to each other by means of a rectilinear rigid rod 11a, act in respective cylindrical cavities 39 and 40 that are in connection with the back side of the membranes 1b and 2b by means of ducts 41 and 42.
  • the structure for pressurizing the operative fluid including the piston 28 of the embodiment of Figure 2 is housed within a second tubular body 43 placed parallel to the connecting rod 6 of the membranes 1b and 2b as in the embodiment of Figure 3.
  • the cylindrical chambers 29c and 29d are in connection with the back side of the membranes 1b and 2b by means of ducts 44 and 45.
  • control of the operating characteristics of the pump carried out by means of the electronic control of the linear actuator 18, 19 and the simplicity of the structure provide a high adaptation flexibility of the system to different use requirements. For example, it is possible to enhance the pump head simply by varying the section of the operative fluid feeding cylinder to the membrane and programming the strokes in a corresponding way so as to maintain constant the set power.
  • the pump according to the invention can, moreover, work with a closed type service fluid circuit for the movement of the membranes without thus requiring complex feeding and discharge systems that are necessary in crank mechanism pumps.
  • the pump can attain the electronic automatic adjustment of the flow rate and of the pump head as a function of the input-output demand of the apparatus with the advantage of not undergoing any damage due to possible unforeseen limitations regarding pump delivery.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP03425591A 2003-09-11 2003-09-11 Membranpumpe für Fluide Withdrawn EP1515044A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03425591A EP1515044A1 (de) 2003-09-11 2003-09-11 Membranpumpe für Fluide
IT001336A ITMI20041336A1 (it) 2003-09-11 2004-07-02 Pompa a membrana per fluidi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03425591A EP1515044A1 (de) 2003-09-11 2003-09-11 Membranpumpe für Fluide

Publications (1)

Publication Number Publication Date
EP1515044A1 true EP1515044A1 (de) 2005-03-16

Family

ID=34130433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03425591A Withdrawn EP1515044A1 (de) 2003-09-11 2003-09-11 Membranpumpe für Fluide

Country Status (2)

Country Link
EP (1) EP1515044A1 (de)
IT (1) ITMI20041336A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2048361A1 (de) * 2007-10-09 2009-04-15 Thetford Corporation Doppelmembranpumpenanordnung für ein Reinigungssystem
US8152476B2 (en) * 2007-08-24 2012-04-10 Toyo Pumps North America Corp. Positive displacement pump with a working fluid and linear motor control
WO2015042677A1 (pt) * 2013-09-26 2015-04-02 Manfredi José Félix Bomba analítica de precisão
US20150098837A1 (en) * 2013-10-08 2015-04-09 Ingersoll-Rand Company Hydraulically Actuated Diaphragm Pumps
CN107304762A (zh) * 2016-04-18 2017-10-31 英格索尔-兰德公司 用于常规布置双膜片泵的直接驱动线性电机
US9850889B2 (en) 2010-02-02 2017-12-26 Dajustco Ip Holdings Inc. Hydraulic fluid control system for a diaphragm pump
CN109026584A (zh) * 2018-09-18 2018-12-18 世通海泰泵业（天津）股份有限公司 电磁驱动式隔膜计量泵

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791768A (en) * 1972-06-16 1974-02-12 W Wanner Fluid pump
US5106274A (en) * 1990-07-23 1992-04-21 Mark Holtzapple Hermetic compressor
EP0578999A1 (de) * 1992-06-24 1994-01-19 WARREN RUPP, Inc. Elektronische Sensor-Einrichtung für eine mittels Fluid angetriebene Membranpumpe
US6280149B1 (en) * 1999-10-28 2001-08-28 Ingersoll-Rand Company Active feedback apparatus and air driven diaphragm pumps incorporating same
DE10013797A1 (de) * 2000-03-20 2001-10-04 Siemens Ag Schwinganker-Membranpumpe
DE10163662A1 (de) * 2001-12-21 2003-07-10 Klemens Schwarzer Verdrängerdosierpumpe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791768A (en) * 1972-06-16 1974-02-12 W Wanner Fluid pump
US5106274A (en) * 1990-07-23 1992-04-21 Mark Holtzapple Hermetic compressor
EP0578999A1 (de) * 1992-06-24 1994-01-19 WARREN RUPP, Inc. Elektronische Sensor-Einrichtung für eine mittels Fluid angetriebene Membranpumpe
US6280149B1 (en) * 1999-10-28 2001-08-28 Ingersoll-Rand Company Active feedback apparatus and air driven diaphragm pumps incorporating same
DE10013797A1 (de) * 2000-03-20 2001-10-04 Siemens Ag Schwinganker-Membranpumpe
DE10163662A1 (de) * 2001-12-21 2003-07-10 Klemens Schwarzer Verdrängerdosierpumpe

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8152476B2 (en) * 2007-08-24 2012-04-10 Toyo Pumps North America Corp. Positive displacement pump with a working fluid and linear motor control
EP2048361A1 (de) * 2007-10-09 2009-04-15 Thetford Corporation Doppelmembranpumpenanordnung für ein Reinigungssystem
US9850889B2 (en) 2010-02-02 2017-12-26 Dajustco Ip Holdings Inc. Hydraulic fluid control system for a diaphragm pump
WO2015042677A1 (pt) * 2013-09-26 2015-04-02 Manfredi José Félix Bomba analítica de precisão
US20150098837A1 (en) * 2013-10-08 2015-04-09 Ingersoll-Rand Company Hydraulically Actuated Diaphragm Pumps
CN104514702A (zh) * 2013-10-08 2015-04-15 英古所连公司 隔膜泵及其操作方法
EP2860400A3 (de) * 2013-10-08 2015-04-29 Ingersoll-Rand Company Hydraulisch betätigte Membranpumpen
US9845794B2 (en) 2013-10-08 2017-12-19 Ingersoll-Rand Company Hydraulically actuated diaphragm pumps
CN104514702B (zh) * 2013-10-08 2018-01-19 英古所连公司 隔膜泵及其操作方法
CN107304762A (zh) * 2016-04-18 2017-10-31 英格索尔-兰德公司 用于常规布置双膜片泵的直接驱动线性电机
US11002270B2 (en) 2016-04-18 2021-05-11 Ingersoll-Rand Industrial U.S., Inc. Cooling methods for electrically operated diaphragm pumps
CN109026584A (zh) * 2018-09-18 2018-12-18 世通海泰泵业（天津）股份有限公司 电磁驱动式隔膜计量泵

Also Published As

Publication number Publication date
ITMI20041336A1 (it) 2004-10-02

Similar Documents

Publication Publication Date Title
US4715791A (en) Metering pump
WO2005119063B1 (en) Hydraulically driven multicylinder pumping machine
AU2015222279B2 (en) Hydraulically driven bellows pump
EP0708244A2 (de) Luftventil mit Vereisungsschutz
US20100166573A1 (en) High-pressure generation device
US4348161A (en) Pressure converting apparatus
CN102678507B (zh) 一种双作用液压注射型双气缸的抽真空与压缩装置
WO2008029288A3 (en) Fluid-powered proportioning pump and system for dispensing fluid inluding such a pump
US4790728A (en) Dual-rigid-hollow-stem actuators in opposite-phase slurry pump drive having variable pumping speed and force
CN111894940B (zh) 一种机械式自动往复运动的油缸结构
KR880001938A (ko) 구동장치
US4224013A (en) Automobile vacuum system for inflating tires
EP1515044A1 (de) Membranpumpe für Fluide
GB1319888A (en) Single or double acting pump for discharging a liquid or a viscous substance
US3775028A (en) Pump unit for water supply
US20090246045A1 (en) Device for Concentrating a Liquid, and Differential Piston Pump
US11913437B2 (en) Pumping systems
EP1477674B1 (de) Membranpumpenanlage
US20240060515A1 (en) Fluid pressure driving device
GB1291331A (en) Concrete pump assemblies
JP6715499B2 (ja) シリンダー型エアーコンプレッサー
JP2003003966A (ja) 高圧発生装置
US11519267B2 (en) Method and device for expanding a gas with a reciprocating-piston machine
CN219605488U (zh) 气动液压泵
CN210686248U (zh) 减压式微型隔膜泵的泵体结构

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20050802

AKX Designation fees paid

Designated state(s): DE ES IT

17Q First examination report despatched

Effective date: 20051004

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20070807