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EP0200510A2 - Pumpen - Google Patents

Pumpen Download PDF

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Publication number
EP0200510A2
EP0200510A2 EP86303182A EP86303182A EP0200510A2 EP 0200510 A2 EP0200510 A2 EP 0200510A2 EP 86303182 A EP86303182 A EP 86303182A EP 86303182 A EP86303182 A EP 86303182A EP 0200510 A2 EP0200510 A2 EP 0200510A2
Authority
EP
European Patent Office
Prior art keywords
tube
pump
chamber
pressure
fluid
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Withdrawn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
EP86303182A
Other languages
English (en)
French (fr)
Other versions
EP0200510A3 (de
Inventor
Raymond C/O Fgl Projects Limited Gannon
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.)
FGL Projects Ltd
Original Assignee
FGL Projects Ltd
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 FGL Projects Ltd filed Critical FGL Projects Ltd
Publication of EP0200510A2 publication Critical patent/EP0200510A2/de
Publication of EP0200510A3 publication Critical patent/EP0200510A3/de
Withdrawn legal-status Critical Current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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10—Pumps having fluid drive

Definitions

  • This invention relates to a pump and more particularly to a pump that operates by peristaltic action.
  • Pumping of fluids is ofen a very specialised operation necessitating frequently the use of pumps the design of which is influenced in large measure by the nature of the fluids to be moved. Those components of the pump which are likely to make contact with the fluids must be inert to them and when, for example, the fluids are corrosive pumps which can handle such materials are generally very expensive.
  • the pumping of liquids which are required to retain a high degree of sterility or contain lumps of solid matter also pose considerable problems in pump design.
  • a further problem is that pumps are often relatively bulky and there are occasions when they cannot be placed where they are most needed.
  • the pump may have to be situated in a less convenient location in which case liquid to be moved has to be piped to and from the pump and this can introduce other difficulties.
  • the present invention is directed to a pump which not only reduces the disadvantages of many existing pumps but in addition provides other important advantages.
  • this invention provides a pump comprising a tube having an inlet and an outlet and made at least partly of readily deformable material means for deforming the tube by application of increased or reduced pressure to a selected part of the external surface of the tube, the pressure being applied by a fluid, and valve means within the tube so that when the selected part is subjected to a predetermined sequence of variations in pressure fluid within the tube is urged from the inlet to the outlet.
  • a pump comprising: at least one chamber; means for alternately connecting the or each chamber to sources of increased and reduced pressure; a tube passing from the exterior through the chamber or chambers and having a reduced thickness wall portion within the or each chamber; and non-return valve means within the or each said wall portion at each end thereof, the arrangement being such that, in operation, when the or each wall portion of the tube is connected to the source of reduced pressure, fluid is drawn thereinto from a preceding portion of the tube and when connected to the source of increased pressure fluid flows therefrom to a succeeding portion of the tube.
  • the pump has an exterior rigid housing 10 which is divided into two chambers 11, 12 by an internal wall 13. Each end wall 14 of the housing 10 has an aperture 15 therein and the wall 13 has an aperture 16 therein, the apertures 15, 16 being aligned to allow a soft and pliable tube 17, for example, of silicone or latex rubber, to pass through the chambers 11, 12. Seals 18 are provided between the apertures 15, 1 6 and the tube 17. Each of the chambers 11, 12 has an outlet 19.
  • valves 20, 21, 22 are located within the tube 17 .
  • the valves 20, 22 are located in the vicinity of the apertures 15 in the end walls 14 of the housing 10, and the valve 21 is located in the vicinity of the aperture 16 in the wall 13.
  • the tube 17 has reduced thickness wall portions 23 located substantially centrally within the chambers 11, 12.
  • the valves 20, 21- are thus substantially at the ends of the reduced thickness wall portion 23 of the tube 17 in the chamber 11 and the valves 21, 22 are substantially at the ends of the reduced thickness wall portion 23 of the tube 17 in the chamber 12.
  • the tube 17 When the chamber 11 is connected to the source of increased pressure, the tube 17 will tend to collapse so that the valve 20 will close and the valve 21 will open so that some of the fluid in the reduced thickness wall portion 23 of the tube 17 within the chamber 11 will transfer to the succeeding reduced thickness wall portion of the tube within the chamber 12 which, at this time, is connected to the source of reduced pressure so that the reduced thickness wall portion 23 of the tube 17 in the chamber 12 is inflating drawing the fluid from the preceding reduced thickness wall portion of the tube 17 in the chamber 11.
  • the valve 22 is closed due to the fact that the chamber 12 is connected to the source uf reduced pressure.
  • the valve 21 closes and the valve 22 opens so that some of the fluid in the reduced thickness wall portion of the tube 17 within the chamber 11 is forced from the pump to the succeeding portion of the tube.
  • the above described cycle may be operated at any desired speed and may use any desired degree of reduced or increased pressure to give a pulsed or continuous flow of fluid from the pump.
  • a pump according to the present invention can, if desired, have one or more than two chambers.
  • the housing 10 may be cylindrical and have, for example, a maximum diameter between 300 mm and 5 mm.
  • the pump illustrated in Figures 3 and 4 comprises an exterior housing (1) which is divided into three chambers (2, 3 and 4) each of which is provided with a conduit (5, 6 and 7) communicating with a source (not shown) of increased and reduced pressure.
  • Chambers (2, 3and 4) are separated from one another by air-tight walls (8 and 9) which form an air-tight seal by insertion into an annular groove (10 and 11) formed in a thickened part of wall (12) of a tube which extends through the housing (1).
  • the tube is made preferably of a silicone rubber and the wall is sufficiently thin to permit it to be readily deformable.
  • the wall at the ends of the tube is thickened and forms an air-tight seal (13 andl4) with end walls of chambers (2 and 4).
  • the tube is provided with inlet (15) and outlet (16).
  • Figures 3 and 4 show that the only material with which fluid passing through the pumps illustrated makes contact is the material from which the pipe has been made. Since silicone rubbers are both very inert chemically and have the necessary degree of deformability their use in the present pumps is preferred. Nevertheless other natural or synthetic deformable particularly elastomeric materials can also be used provided that they have the necessary degree of inertness to the fluid being pumped.
  • Tube (12) in he form of pump illustrated in Figures 3 and 4 when not in use is substantially free of any constriction although as shown above constrictions are formed in a controlled way when the wall of the tube is deformed by the externally applied pressure and then acts as a valve. Pumps of this construction are especially useful in the moving of fluids which contain lumps of solid ofsemi solid matter, for example, conserves of fruit such as jam or other foodstuffs.
  • the width of tt e bore of the tube can be arranged to be too wide to by blocked by any lumps present in the fluid. Furthermore, even if a lump is present in a part of the tube where oppsing parts of the wall are being compressed together (17 and 18) to form a valve the effect of the lump is merely to assist in tie temporary blocking of the tube. When the opposing parts of the wall are subjected to a vacuum during the next stage of the pumping cycle they separate and the lump is released and transported away in the stream of fluid without interfering with the efficiency of the pumping operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP86303182A 1985-05-01 1986-04-28 Pumpen Withdrawn EP0200510A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8511097 1985-05-01
GB858511097A GB8511097D0 (en) 1985-05-01 1985-05-01 Pump

Publications (2)

Publication Number Publication Date
EP0200510A2 true EP0200510A2 (de) 1986-11-05
EP0200510A3 EP0200510A3 (de) 1986-12-30

Family

ID=10578517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86303182A Withdrawn EP0200510A3 (de) 1985-05-01 1986-04-28 Pumpen

Country Status (2)

Country Link
EP (1) EP0200510A3 (de)
GB (1) GB8511097D0 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640698A1 (fr) * 1988-12-15 1990-06-22 Strasbourg Ecole Nale Sup Arts Pompe peristaltique
GB2235256A (en) * 1989-06-22 1991-02-27 Thomas John Mcneel Robertson Flexible chamber pump
WO2008098854A1 (en) * 2007-02-15 2008-08-21 Z.G. Camini Inox S.R.L. Pumping device particularly for fluids containing solid suspensions
DE102009016095A1 (de) * 2009-04-03 2010-10-14 Impellis GmbH & Co. KG Oberflächentechnik Förderer für ein Pulver-/Gasgemisch
WO2023173127A1 (en) * 2022-03-11 2023-09-14 Phap Medical, Llc Systems and methods for a peristalsis heart assist pump

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2291912A (en) * 1940-04-08 1942-08-04 Cornelius W Meyers Pumping apparatus
DE894503C (de) * 1951-05-16 1953-10-26 Richard Dipl-Ing Schiel Ventillose Pumpe und Verdichter
US2747510A (en) * 1952-01-12 1956-05-29 Soundrive Pump Company Pump for fluid and semi-fluid materials such as plaster and the like
DE2230764A1 (de) * 1972-06-23 1974-01-17 Guenter Weber Ventillose stopfbuchslose schlauchpumpe
DE2701171A1 (de) * 1977-01-13 1978-07-20 Hartmut Kowalzik Peristaltische membranpumpe zur foerderung von schlaemmen und dickstoffen, mit pneumatisch-hydraulischem antrieb
GB2054057A (en) * 1979-07-12 1981-02-11 Noord Nederlandsche Maschf Peristaltic pump
DE3122097A1 (de) * 1981-06-03 1982-12-23 Licencia Találmányokat Ertékesítö Vállalat, Budapest Vorrichtung zur steigerung des druckes von in rohrleitungen foerderbaren materialien, verfahren zum betreiben dieser vorrichtung und steuerkonstruktion zur durchfuehrung des verfahrens

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2291912A (en) * 1940-04-08 1942-08-04 Cornelius W Meyers Pumping apparatus
DE894503C (de) * 1951-05-16 1953-10-26 Richard Dipl-Ing Schiel Ventillose Pumpe und Verdichter
US2747510A (en) * 1952-01-12 1956-05-29 Soundrive Pump Company Pump for fluid and semi-fluid materials such as plaster and the like
DE2230764A1 (de) * 1972-06-23 1974-01-17 Guenter Weber Ventillose stopfbuchslose schlauchpumpe
DE2701171A1 (de) * 1977-01-13 1978-07-20 Hartmut Kowalzik Peristaltische membranpumpe zur foerderung von schlaemmen und dickstoffen, mit pneumatisch-hydraulischem antrieb
GB2054057A (en) * 1979-07-12 1981-02-11 Noord Nederlandsche Maschf Peristaltic pump
DE3122097A1 (de) * 1981-06-03 1982-12-23 Licencia Találmányokat Ertékesítö Vállalat, Budapest Vorrichtung zur steigerung des druckes von in rohrleitungen foerderbaren materialien, verfahren zum betreiben dieser vorrichtung und steuerkonstruktion zur durchfuehrung des verfahrens

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640698A1 (fr) * 1988-12-15 1990-06-22 Strasbourg Ecole Nale Sup Arts Pompe peristaltique
GB2235256A (en) * 1989-06-22 1991-02-27 Thomas John Mcneel Robertson Flexible chamber pump
WO2008098854A1 (en) * 2007-02-15 2008-08-21 Z.G. Camini Inox S.R.L. Pumping device particularly for fluids containing solid suspensions
DE102009016095A1 (de) * 2009-04-03 2010-10-14 Impellis GmbH & Co. KG Oberflächentechnik Förderer für ein Pulver-/Gasgemisch
WO2023173127A1 (en) * 2022-03-11 2023-09-14 Phap Medical, Llc Systems and methods for a peristalsis heart assist pump

Also Published As

Publication number Publication date
GB8511097D0 (en) 1985-06-12
EP0200510A3 (de) 1986-12-30

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Inventor name: GANNON, RAYMONDC/O FGL PROJECTS LIMITED