EP0232238B1 - Dispositif de pompage - Google Patents
Dispositif de pompage Download PDFInfo
- Publication number
- EP0232238B1 EP0232238B1 EP87850033A EP87850033A EP0232238B1 EP 0232238 B1 EP0232238 B1 EP 0232238B1 EP 87850033 A EP87850033 A EP 87850033A EP 87850033 A EP87850033 A EP 87850033A EP 0232238 B1 EP0232238 B1 EP 0232238B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- hose
- pump
- pair
- inlet
- 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
Links
- 230000009969 flowable effect Effects 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000004816 latex Substances 0.000 claims description 3
- 229920000126 latex Polymers 0.000 claims description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 210000002381 plasma Anatomy 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
- F04B43/10—Pumps having fluid drive
Definitions
- the present invention relates to a pump device of the pressurized fluid operated type comprising a pair of chambers divided by a movable partition wall, where one of said chambers forms a dosing chamber and the other a working chamber.
- the problem behind the invention is to design the pump device such that it allows shifting between the functions dosing chamber and working chamber without major rebuilding of the structure.
- a further problem is to provide an accurate dosing and discharge operation, at least when operating the pump according to one of said operation modes.
- Pressurized air pumps having a tube-shaped membrane between a dosing chamber and an working chamber are previously known and are for instance disclosed in SE-B-412939, (GB-A-2003976) and DE-A-3000142.
- pumps of the present type are of the peristaltic type.
- a further example of such pumps is shown in US-A No. 3 427 987.
- US-A-2 626 569 discloses a prior art pump device comparable to the present invention.
- the known pumps do not allow shifting of operation mode, do not have a basic structure for toolfree assembling and disassembling in sterile systems, do not eliminate product wear due to shearing forces, do not allow in-line sterilization, and do not withstand high pressures and high temperatures. Said shearing forces are a problem with prior art pumps when pumping blood-plasma, in which the delicate blood-plates maybe damaged. Furtheron, the dosing chambers of the known pumps generally cannot be emptied completely.
- a pump device for a flowable product comprising an elongated housing and at least two pairs of connection pieces arranged on the housing, where each pair forms an inlet and an outlet, respectively, to and from a chamber in said housing, said one pair of inlet and outlet are operatively interconnected via a sub-chamber forming, not pressure resistant, resilient, pipe shaped hose in the chamber, and means are arranged for alternatingly opening and closing the inlet and outlet of each pair of connection pieces.
- the device is characterized in that perforated, truncated conical hose connection means are arranged at opposite ends of the elongated housing, and that means are arranged for pressurizing the hose either internally or externally in order to pump the product either through the chamber or the hose.
- the internal surface of the chamber is formed as a pressure resistant surface which resists the strain arising from pressurizing the interior of the tube.
- said means for pressurizing the tube interior comprises a source for pressurized fluid connectable to the inlet of said pair of connections
- said means for externally pressurizing the tube comprises a source for pressurized fluid connectable to the inlet of the other pair of connections.
- connection pieces preferably are accomplished by check valves.
- the cross section area of the tube preferably is less than the cross section area of the chamber, at least along a certain length of the chamber.
- An example of a preferred tube material is a highly stretchable latex material.
- the reference numeral 10 indicates a generally cylindric pump housing where a tube or hose 11 of a stretchable or resilient material is arranged for withstanding high temperatures but which is not pressure resistant, but basically of the type which resiliently reassumes its original shape, for instance a hose of a highly stretchable latex material.
- the tube or hose 11 is connected such that it forms a partition element inside the chamber 16 of the housing 10 and provides communication between a connection piece 12 and a connection piece 13, provided the tube is not fully compressed.
- Either one of said connection pieces forms an inlet to or outlet from a chamber 16.
- 14 is an inlet and 15 an outlet.
- the inlet and the outlet have been accomplished by means of perforated, truncated cones which are maintained inside the housing 10 by means of clamps 17, 18 which are operable without tools for assembling and disassembling of the pump.
- Further clamps 19, 20, of the same type as the previous ones, connect pipe pieces to the housing 10 for forming inlet and outlet connection pieces for sterile flow conduits.
- the perforated, truncated cones 14 and 15 counteract most efficiently any tendency of laminar flow inside the hose 11. Thus, shearing forces are avoided and the product will not suffer seriously from wear due to internal friction. Additionally, when compressing the hose 11, the conical exterior of the pieces 14, 15 forms a support for squeezing the hose completely flat, leaving no rest volume, without seriously stressing the hose.
- a check valve 21, 22 which for instance nay be such that one is closed and the other one opened when an over pressure acts externally onto the pipe.
- the dashed line 11a indicates an alternative extension of the hose or pipe 11, implying that the natural dimension of the pipe is somewhat less than the cross section of the pump housing 10. In this manner there is obtained a division of the chamber 16 into two chambers where each one already from the very beginning has a certain nominal volume. Such partial chambers may also be obtained by initially creating an under-pressure in the pipe.
- the dashed line 23 indicates a chamber design basically of a double conic type.
- the pipe 11 forms the partition element between two distinct chambers 16a, 16b.
- the numerals 24, 25 indicate an inlet to or an outlet from the chamber or more precisely the sub-chamber 16a after the hose or pipe 11 has been mounted.
- the numerals 26, 27 denote check valves basically of the same type as the valves 21, 22 implying that one of the valves is closed while the other is open.
- the inside of the wall 23 as well as the inside of the cylindric housing form a pressure resistant surface which resists the strain acting on the pipe as a result from the internal over-pressure.
- a source for pressurized fluid (not shown) is connected to either one of the connection pieces 12, 13.
- the pressure inside the pipe pushes the hose or pipe against the pressure resistant surface 23, such that the chamber 16a is completely emptied from product.
- connection piece 24, 25 selected as an inlet while the other connection piece is closed.
- All check valves 21, 22, 26 and 27 are of the flap type comprising flaps 21a and 22a flexible in one direction only for opening up valve openings in support plates 21b and 22b for establishing communication to the interior of the hose 11. As appears from the figure, the flaps 21a and 22 operate in different directions for providing the proper opening and blocking function at respective ends of the pump housing 10.
- the pulsating outflow from the pump may be equalized by parallel connecting two or more of pumps of the type described arranged such that there is a certain phase lag.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Eye Examination Apparatus (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Surgical Instruments (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Fluid-Driven Valves (AREA)
- Seal Device For Vehicle (AREA)
Claims (7)
- Dispositif de pompage d'un premier fluide, comprenant un boîtier allongé (10) et au moins deux paires d'éléments de raccordement (12, 13; 24, 25) placées sur le boîtier, chaque paire formant un dispositif d'entrée dans une chambre formée dans le boîtier et un dispositif de sortie d'une telle chambre,
la première paire de dispositifs d'entrée et de sortie (12, 13) étant raccordée lors du fonctionnement par l'intermédiaire d'une chambre auxiliaire (16b) formant une tuyauterie souple (11) en forme de tube élastique ne résistant pas à la pression à l'intérieur de la chambre, et
un dispositif (21, 22; 26, 27) étant disposé afin qu'il assure l'ouverture et la fermeture alternées de l'entrée et de la sortie de chaque paire d'éléments de raccordement (12, 13),
caractérisé en ce que des dispositifs (14; 15) de raccordement sous forme de tuyauteries souples tronconiques perforées sont placés aux extrémités opposées du boîtier allongé, et en ce que
un dispositif est destiné à mettre sous pression la tuyauterie souple, à l'intérieur ou à l'extérieur, afin que le produit soit pompé soit dans la chambre (16a), soit dans la tuyauterie souple (11). - Pompe selon la revendication 1, dans laquelle la surface interne de la chambre est formée d'une surface résistant à la pression, qui résiste à la déformation due à la mise sous pression interne de la tuyauterie souple (11).
- Pompe selon la revendication 2, dans laquelle la surface résistant à la pression forme un double tronc de cône dont la base se trouve de façon générale dans la partie médiane de la chambre et dont les extrémités se trouvent à la base de chacun des dispositifs de raccordement sous forme d'une tuyauterie souple.
- Pompe selon la revendication 3, dans laquelle le dispositif de mise sous pression interne de la tuyauterie souple (11) comporte une source de fluide sous pression destinée à être raccordée à l'un des dispositifs d'entrée (14; 15) de la première paire d'éléments de raccordement (12, 13), et en ce que le dispositif de mise sous pression externe de la tuyauterie souple comprend une source de fluide sous pression destinée à être raccordée au dispositif d'entrée (24; 25) de l'autre paire d'éléments de raccordement.
- Pompe selon la revendication 4, dans laquelle le dispositif d'ouverture et de fermeture alternées de l'entrée et de la sortie comporte des clapets de retenue (21, 22; 26, 27) du type à volet.
- Pompe selon la revendication 5, dans laquelle la section du tube (11) est inférieure à la section de la chambre, au moins sur une certaine distance le long de la chambre.
- Pompe selon la revendication 6, dans laquelle le tube (11) est formé d'un matériau à base de latex très élastique.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87850033T ATE63616T1 (de) | 1986-02-03 | 1987-02-02 | Pumpeinrichtung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8600459A SE8600459L (sv) | 1986-02-03 | 1986-02-03 | Pumpanordning |
SE8600459 | 1986-02-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0232238A2 EP0232238A2 (fr) | 1987-08-12 |
EP0232238A3 EP0232238A3 (en) | 1989-02-15 |
EP0232238B1 true EP0232238B1 (fr) | 1991-05-15 |
Family
ID=20363325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87850033A Expired - Lifetime EP0232238B1 (fr) | 1986-02-03 | 1987-02-02 | Dispositif de pompage |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0232238B1 (fr) |
JP (1) | JP2801001B2 (fr) |
AT (1) | ATE63616T1 (fr) |
AU (1) | AU6798887A (fr) |
DE (1) | DE3770006D1 (fr) |
DK (1) | DK168311B1 (fr) |
FI (1) | FI870408A (fr) |
NO (1) | NO870350L (fr) |
SE (1) | SE8600459L (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3926343A1 (de) * | 1989-08-09 | 1991-02-14 | Werner Heyberger | Membranpumpe, insbesondere fuer den bergbau und grundbau |
CN105065237A (zh) * | 2015-08-20 | 2015-11-18 | 沈阳大学 | 一种筒式隔膜水力矿浆泵 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2626569A (en) * | 1946-10-03 | 1953-01-27 | Elmo M Knudson | Lift for deep well hydraulic pumps |
US3427987A (en) * | 1967-05-15 | 1969-02-18 | Gray Co Inc | Tubular diaphragm pump |
US4104005A (en) * | 1976-01-09 | 1978-08-01 | Thermo Electron Corporation | Pneumatic bladder pump having stiffness symmetry |
JPS561998Y2 (fr) * | 1976-04-23 | 1981-01-17 | ||
IT1117080B (it) * | 1977-09-21 | 1986-02-10 | Bosio Roberto | Pompa atta a realizzare una circolazione sanguigna artificiale |
DE3000142A1 (de) * | 1980-01-04 | 1981-07-09 | Werner 7129 Talheim Heyberger | Injektionspumpe fuer den bergbau und grundbau |
-
1986
- 1986-02-03 SE SE8600459A patent/SE8600459L/ unknown
-
1987
- 1987-01-23 AU AU67988/87A patent/AU6798887A/en not_active Abandoned
- 1987-01-28 DK DK045087A patent/DK168311B1/da not_active IP Right Cessation
- 1987-01-28 NO NO870350A patent/NO870350L/no unknown
- 1987-01-30 FI FI870408A patent/FI870408A/fi not_active Application Discontinuation
- 1987-02-02 AT AT87850033T patent/ATE63616T1/de not_active IP Right Cessation
- 1987-02-02 EP EP87850033A patent/EP0232238B1/fr not_active Expired - Lifetime
- 1987-02-02 DE DE8787850033T patent/DE3770006D1/de not_active Expired - Lifetime
- 1987-02-03 JP JP62021922A patent/JP2801001B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI870408A0 (fi) | 1987-01-30 |
FI870408A (fi) | 1987-08-04 |
DK168311B1 (da) | 1994-03-07 |
ATE63616T1 (de) | 1991-06-15 |
JPS62191680A (ja) | 1987-08-22 |
NO870350L (no) | 1987-08-04 |
EP0232238A3 (en) | 1989-02-15 |
AU6798887A (en) | 1987-08-06 |
DK45087A (da) | 1987-08-04 |
DE3770006D1 (de) | 1991-06-20 |
SE8600459D0 (sv) | 1986-02-03 |
DK45087D0 (da) | 1987-01-28 |
NO870350D0 (no) | 1987-01-28 |
SE8600459L (sv) | 1987-08-04 |
JP2801001B2 (ja) | 1998-09-21 |
EP0232238A2 (fr) | 1987-08-12 |
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