EP1884663A1 - Peristaltic pump - Google Patents
Peristaltic pump Download PDFInfo
- Publication number
- EP1884663A1 EP1884663A1 EP07112809A EP07112809A EP1884663A1 EP 1884663 A1 EP1884663 A1 EP 1884663A1 EP 07112809 A EP07112809 A EP 07112809A EP 07112809 A EP07112809 A EP 07112809A EP 1884663 A1 EP1884663 A1 EP 1884663A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hose
- medium
- pressing
- cavity
- pump
- 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- Withdrawn
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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
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
-
- 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
Definitions
- the invention relates to a peristaltic pump for circulating a medium such as a liquid, a gas, a slurry, a granulate or a combination of two or more thereof, which pump comprises:
- the pump operates as closing valve such that the delivery side and the suction side are separated from each other.
- hose in a peristaltic pump or hose pump in fact display a mutual contradiction.
- a hose with the smallest possible radial stiffness is desired, whereby the smallest possible compression force, drive torque, stresses in the hose, development of heat resulting from hysteresis and friction between a pressing element and the hose will occur.
- a certain degree of stiffness of the hose is desired with a view to restoring the initial, for instance round, form of the hose. This does after all define the suction capacity.
- the invention proposes a peristaltic pump of the type stated in the preamble which has the feature that a cavity is defined in the pump housing, the pressing surface of which cavity forms a boundary and in which cavity the hose and the pressing means with the pressing elements are accommodated; and the cavity is hermetically sealed and filled with a filling medium.
- the pump has the special feature that the pump is of the linear type.
- Linear is understood to mean a pump wherein the pressing elements follow an at least more or less linear path along the pressing surface, which pressing surface likewise has an at least more or less linear form.
- a peristaltic pump is further known for circulating a medium, which pump is of the rotating type and comprises:
- hose pump This pump is particularly important in the context of the invention because such a pump, generally referred to as "hose pump”, is very common and is highly suitable for adaptation in terms of the teaching of the present invention.
- this said rotating peristaltic pump has the feature that a cavity is defined in the pump housing, the pressing surface of which cavity forms a boundary and in which cavity the hose and the rotor are accommodated; and the cavity is hermetically sealed and filled with a filling medium.
- the starting point for the above described invention for both the linear and the rotating pump, is that the hose has its initial, for instance round form along a significant part of its active length except at the position where a pressing element compresses and thus locally closes the hose.
- the cavity in the pump housing is completely filled with a filling medium, some further aspects and possible options of which will be discussed hereinbelow.
- the pressing means When the pressing means are displaced, the positions of the pressing elements will be displaced along the hose.
- the hose will be restored to its original form as a consequence of the incompressibility of this filling medium and the constant volume thereof.
- a change in volume at the one location must be compensated by an equal change in volume at another location. This could be otherwise expressed with the formulation that the hose is as it were hydraulically energized in this way.
- the bringing of the hose into a round form could for instance be realized during assemby, wherein the pump has not yet been filled with liquid. Via the inlet or outlet the hose could be temporarily brought to pressure by means of a gas or liquid. After filling of the cavity in the pump housing with liquid, such as a hydraulic oil, and subsequent venting, the medium pressure can be removed from the hose. As a result of the presence of the in this case incompressible filling medium the hose retains its round form.
- the pump according to the invention can have the special feature that the filling medium is a liquid.
- Very simple and inexpensive is an embodiment in which the liquid is water.
- a hydraulic oil can also be applied.
- the pump has the special feature that the filling medium is a gas.
- the filling medium being a combination of a liquid and a gas.
- the pump has the special feature that a chosen pressure prevails in the gas.
- the pump comprises adjusting means for adjusting the pressure in the filling medium present in the cavity.
- this latter variant can have the special feature that the adjusting means comprise a cylinder in which a piston is sealingly displaceable and fixable at a position to be selected, wherein a space bounded by the cylinder and the piston connects to the cavity in the pump housing.
- the pump according to the invention can comprise: pressure difference means for creating a chosen positive pressure difference between the interior of the hose and the medium present in the cavity such that the hose has a tendency to expand.
- pressure difference means can be implemented as said adjusting means, but alternatively by mounting the hose under internal pressure. The positive pressure difference is after all the decisive factor.
- FIG. 1 shows a cross-section through a peristaltic pump 1 of the rotating type according to the invention.
- Pump 1 comprises: a pump housing 2; a pressing surface 3 present in this pump housing 2 and having the general form of a half-cylinder extending through 180° and having a central axis 5; and an elastically deformable hose 4 which has a medium inlet 6 and a medium outlet 7; a rotor 8 with two pressing cams 9, 10 which are placed diametrically to each other, i.e.
- the indrawn medium is indicated with an arrow 13.
- the medium discharged under pressure is indicated with an arrow 14.
- Pump housing 2 comprises a cavity 15 wholly filled with filling medium 16, in this case a hydraulic oil.
- Cavity 15 is hermetically sealed for this purpose by means of provisions to be described hereinbelow.
- FIG. 2 shows a pump 21 which differs in one respect from pump 1 according to figure 1, i.e. pump housing 22 has a connection 24 to which connects a conduit 25 which connects in turn to a cavity 28 which is bounded by a cylinder 26 and a piston 27 which is reciprocally displaceable as according to an arrow 30 in sealing manner by means of a sealing ring 29.
- pump housing 22 has a connection 24 to which connects a conduit 25 which connects in turn to a cavity 28 which is bounded by a cylinder 26 and a piston 27 which is reciprocally displaceable as according to an arrow 30 in sealing manner by means of a sealing ring 29.
- the hydraulic oil 26 is incompressible, a displacement of the piston to the left, so with a reduction in the volume of space 28, will exert a pressure on hose 4 such that this will tend to contract and begin to decrease in volume.
- a displacement of piston 27 to the right will increase the volume of space 28, whereby hose 4 will tend to expand. In the description introduction has
- Hose 4 is mounted in hermetically sealing manner relative to the pump housing on the side of both medium inlet 6 and medium outlet 7 of this hose.
- hermetic seal relates only to a practical example and that many other structures can be applied.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
A pump (1) for circulating a medium comprises:
an elastically deformable hose (4) which lies against a pressing surface (3), with a medium inlet (6) and a medium outlet (7); and
pressing elements (9,10) which move along the hose and press the hose part in contact with a pressing element against the pressing surface while locally compressing and closing the hose part;
whereby medium is drawn in via the medium inlet and discharged under pressure via the medium outlet.
an elastically deformable hose (4) which lies against a pressing surface (3), with a medium inlet (6) and a medium outlet (7); and
pressing elements (9,10) which move along the hose and press the hose part in contact with a pressing element against the pressing surface while locally compressing and closing the hose part;
whereby medium is drawn in via the medium inlet and discharged under pressure via the medium outlet.
The pump has the special feature that a cavity (15) is defined in the pump housing (2), the pressing surface of which cavity forms a boundary and in which cavity the hose and the pressing means with the pressing elements are accommodated; and the cavity is hermetically sealed and filled with a filling medium.
Description
- The invention relates to a peristaltic pump for circulating a medium such as a liquid, a gas, a slurry, a granulate or a combination of two or more thereof, which pump comprises:
- a pump housing;
- a pressing surface present in this pump housing;
- an elastically deformable hose, a part of which lies against the pressing surface, which hose has a medium inlet and a medium outlet; and
- pressing means with a number of equidistantly placed pressing elements such as rollers or cams;
- Owing to the local compression, and thereby closing of the hose by the pressing elements, and the displacement of this local compression under the influence of the pressing means driven along the hose, the medium present in the hose will be pushed along. After a pressing element has passed, the form of the hose is restored due to its elastic properties. Owing to this mechanism medium is drawn into the hose on the suction side.
- Because it is ensured that the hose is always pressed shut locally by at least one locally acting pressing element, the pump operates as closing valve such that the delivery side and the suction side are separated from each other.
- The functions of the hose in a peristaltic pump or hose pump in fact display a mutual contradiction. During compression of the hose by a pressing element a hose with the smallest possible radial stiffness is desired, whereby the smallest possible compression force, drive torque, stresses in the hose, development of heat resulting from hysteresis and friction between a pressing element and the hose will occur. However, during the restoring phase after a pressing element has passed a certain degree of stiffness of the hose is desired with a view to restoring the initial, for instance round, form of the hose. This does after all define the suction capacity.
- In order to go a considerable way toward enabling both the stated contradictory functionalies during operation of the pump, the invention proposes a peristaltic pump of the type stated in the preamble which has the feature that a cavity is defined in the pump housing, the pressing surface of which cavity forms a boundary and in which cavity the hose and the pressing means with the pressing elements are accommodated; and the cavity is hermetically sealed and filled with a filling medium.
- In a specific embodiment the pump has the special feature that the pump is of the linear type. "Linear" is understood to mean a pump wherein the pressing elements follow an at least more or less linear path along the pressing surface, which pressing surface likewise has an at least more or less linear form.
- A peristaltic pump is further known for circulating a medium, which pump is of the rotating type and comprises:
- a pump housing;
- a curved pressing surface which is present in this pump housing and at least a part of which takes the general form of a circular arc with a central axis;
- an elastically deformable hose, of which a part lies against the pressing surface, which hose has a medium inlet and a medium outlet;
- a rotor which has a number of pressing elements, such as rollers or cams, placed at equal angular and radial positions and which serves as pressing means;
- This pump is particularly important in the context of the invention because such a pump, generally referred to as "hose pump", is very common and is highly suitable for adaptation in terms of the teaching of the present invention.
- According to the invention this said rotating peristaltic pump has the feature that a cavity is defined in the pump housing, the pressing surface of which cavity forms a boundary and in which cavity the hose and the rotor are accommodated; and
the cavity is hermetically sealed and filled with a filling medium. - It is noted that while this rotating pump has a construction other than for instance a linear pump according to the invention, the principles implemented therein are nevertheless the same. The results of the teaching according to the invention can hereby also be easily realized in the rotating pump.
- The starting point for the above described invention, for both the linear and the rotating pump, is that the hose has its initial, for instance round form along a significant part of its active length except at the position where a pressing element compresses and thus locally closes the hose. The cavity in the pump housing is completely filled with a filling medium, some further aspects and possible options of which will be discussed hereinbelow. When the pressing means are displaced, the positions of the pressing elements will be displaced along the hose. As a result of the constant volume in the case a liquid is used as filling medium, the hose will be restored to its original form as a consequence of the incompressibility of this filling medium and the constant volume thereof. A change in volume at the one location must be compensated by an equal change in volume at another location. This could be otherwise expressed with the formulation that the hose is as it were hydraulically energized in this way.
- In the case of an incompressible filling medium the bringing of the hose into a round form could for instance be realized during assemby, wherein the pump has not yet been filled with liquid. Via the inlet or outlet the hose could be temporarily brought to pressure by means of a gas or liquid. After filling of the cavity in the pump housing with liquid, such as a hydraulic oil, and subsequent venting, the medium pressure can be removed from the hose. As a result of the presence of the in this case incompressible filling medium the hose retains its round form.
- As already discussed above, the pump according to the invention can have the special feature that the filling medium is a liquid.
- Very simple and inexpensive is an embodiment in which the liquid is water. A hydraulic oil can also be applied.
- There is also the possibility of embodying the pump such that the liquid is a coolant and lubricant.
- According to yet another aspect of the invention, the pump has the special feature that the filling medium is a gas.
- Inexpensive and simple is an embodiment of this latter principle in which the gas is air.
- There is the further possibility of the filling medium being a combination of a liquid and a gas.
- According to a final aspect of the invention, the pump has the special feature that a chosen pressure prevails in the gas.
- These latter options, wherein use is made of a gas, provide a certain damping of the local changes in volume which occur and which compensate each other. The mechanical load on the components of the pump, such as the hose, the connections therefor and on the medium for circulating will hereby be reduced.
- According to a determined aspect of the invention, the pump comprises adjusting means for adjusting the pressure in the filling medium present in the cavity.
- In a practical embodiment this latter variant can have the special feature that the adjusting means comprise a cylinder in which a piston is sealingly displaceable and fixable at a position to be selected, wherein a space bounded by the cylinder and the piston connects to the cavity in the pump housing.
- In order to make clear the possible advantage of the latter two aspects, the reader can imagine that, in the design of prior art peristaltic pumps, the buckling behaviour of the hose has been a significant factor in determining the internal dimensions of the cavity in the pump housing of a peristaltic pump of the rotating type. When the radius of curvature is too small, the hose will begin to buckle. The reader is now invited to imagine that this situation does indeed occur. The cavity is then filled with a liquid, thus an incompressible medium. If liquid is now extracted from the cavity by means of said adjusting means, the hose will as it were be inflated to more or less its initial, round form due to the pressure difference between the interior and the exterior of this hose. The principle of the peristaltic pump is wholly retained, the operation of the pump merely taking place with a certain difference in pressure between the interior and the exterior of the hose. The relative underpressure in said cavity is favourable for drawing in medium.
- Since said pressure difference inside and outside the hose is a decisive factor, the same effect can be achieved by mounting the hose under internal pressure of gas or liquid.
- In relation to the foregoing, the pump according to the invention can comprise: pressure difference means for creating a chosen positive pressure difference between the interior of the hose and the medium present in the cavity such that the hose has a tendency to expand. These pressure difference means can be implemented as said adjusting means, but alternatively by mounting the hose under internal pressure. The positive pressure difference is after all the decisive factor.
- The invention will now be elucidated on the basis of the accompanying drawings. In the drawings:
- Figure 1 shows a cross-section through a peristaltic pump of the rotating type according to the invention;
- Figure 2 shows a cross-section through a variant.
- Figure 1 shows a cross-section through a peristaltic pump 1 of the rotating type according to the invention. Pump 1 comprises: a
pump housing 2; apressing surface 3 present in thispump housing 2 and having the general form of a half-cylinder extending through 180° and having acentral axis 5; and an elasticallydeformable hose 4 which has amedium inlet 6 and amedium outlet 7; arotor 8 with twopressing cams central axis 5, also the central axis ofrotor 8, and which in this embodiment are embodied as partly cylindrical cams, whichrotor 8 is rotatingly drivable aroundcentral axis 5 by means of drive means (not shown); whichpressing cams hose 4 in contact with the relevantpressing cam surface 3 while locally compressing and closing the hose part; this such that during the rotation ofrotor 8 medium is drawn in viamedium inlet 6 and discharged under pressure viamedium outlet 7. - The indrawn medium is indicated with an
arrow 13. The medium discharged under pressure is indicated with anarrow 14. -
Pump housing 2 comprises acavity 15 wholly filled with fillingmedium 16, in this case a hydraulic oil.Cavity 15 is hermetically sealed for this purpose by means of provisions to be described hereinbelow. - Figure 2 shows a
pump 21 which differs in one respect from pump 1 according to figure 1, i.e.pump housing 22 has aconnection 24 to which connects aconduit 25 which connects in turn to acavity 28 which is bounded by acylinder 26 and apiston 27 which is reciprocally displaceable as according to anarrow 30 in sealing manner by means of a sealingring 29. Since thehydraulic oil 26 is incompressible, a displacement of the piston to the left, so with a reduction in the volume ofspace 28, will exert a pressure onhose 4 such that this will tend to contract and begin to decrease in volume. A displacement ofpiston 27 to the right will increase the volume ofspace 28, wherebyhose 4 will tend to expand. In the description introduction has been set forth that this can result in advantages. - It is noted that the same components in figures 1 and 2 are designated with the same reference numerals.
- In both pump 1 and pump 21 the
cavity 15 inpump housing 1 and 21 respectively is hermetically sealed such that fillingmedium 16 is wholly enclosed therein.Hose 4 is mounted in hermetically sealing manner relative to the pump housing on the side of bothmedium inlet 6 andmedium outlet 7 of this hose. For purposes of elucidation the drawn components are stated below. The reference numerals have the following significance: - 31: An O-ring, using which
hose 4 seals against anend flange 32 of the pump housing. - 33: A connecting flange for connecting the pump to external provisions.
- 34: A stiff gauze, i.e. a tube which is provided with a
flange 35 and which fits intohose 4, thehose 4 being connected clampingly and sealingly by means of ahose clip 36 to thegauze 34 which is manufactured from metal or a hard plastic.Hose clip 36 is arranged beforegauze 34 and flange 33 are mounted.Reference numeral 37 refers to a flange support which on the left-hand side of the drawing positions O-ring 31 and which on its right-hand side is in contact with connecting flange 33.Flange support 37 consists of two connecting strips (not shown in the drawings) such thathose clip 36 can be tensioned by rotating thescrew 38. - It is noted that said components are drawn only on the outlet side in figure 1. The elements in question are identical thereto on the inlet side in figure 1. The relevant connections in the embodiment according to figure 2 are identical to those of figure 1.
- It is noted that the described hermetic seal relates only to a practical example and that many other structures can be applied.
which pressing elements during operation press the hose part in contact with the relevant pressing element against said pressing surface part while locally compressing and closing the hose part;
this such that during driving of the pressing means medium is drawn in via the medium inlet and discharged under pressure via the medium outlet.
which pressing elements during operation press the hose part in contact with the relevant pressing element against said pressing surface part while locally compressing and closing said hose part;
this such that during the rotation of the rotor medium is drawn in via the medium inlet and discharged under pressure via the medium outlet.
Claims (15)
- Peristaltic pump for circulating a medium such as a liquid, a gas, a slurry, a granulate or a combination of two or more thereof, which pump comprises:a pump housing;a pressing surface present in this pump housing;an elastically deformable hose, a part of which lies against the pressing surface, which hose has a medium inlet and a medium outlet; andpressing means with a number of equidistantly placed pressing elements such as rollers or cams;which pressing means are drivable such that the pressing elements move along the hose; and
which pressing elements during operation press the hose part in contact with the relevant pressing element against said pressing surface part while locally compressing and closing the hose part;
this such that during driving of the pressing means medium is drawn in via the medium inlet and discharged under pressure via the medium outlet;
characterized in thata cavity is defined in the pump housing, the pressing surface of which cavity forms a boundary and in which cavity the hose and the pressing means with the pressing elements are accommodated; andthe cavity is hermetically sealed and filled with a filling medium. - Peristaltic pump as claimed in claim 1,
characterized in that
the pump is of the linear type. - Peristaltic pump as claimed in either of the foregoing claims for circulating a medium, which pump is of the rotating type and comprises:a pump housing;a curved pressing surface which is present in this pump housing and at least a part of which takes the general form of a circular arc with a central axis;an elastically deformable hose, of which a part lies against the pressing surface, which hose has a medium inlet and a medium outlet;a rotor which has a number of pressing elements, such as rollers or cams, placed at equal angular and radial positions and which serves as pressing means;which rotor is rotatingly drivable around a central axis; and
which pressing elements during operation press the hose part in contact with the relevant pressing element against said pressing surface part while locally compressing and closing said hose part;
this such that during the rotation of the rotor medium is drawn in via the medium inlet and discharged under pressure via the medium outlet;
characterized in thata cavity is defined in the pump housing, the pressing surface of which cavity forms a boundary and in which cavity the hose and the rotor are accommodated; andthe cavity is hermetically sealed and filled with a filling medium. - Peristaltic pump as claimed in any of the foregoing claims, comprising pressing means for feeding additional filling medium under pressure to the cavity such that the hose is subjected to a certain compression while maintaining a passage such that the quantity of medium circulated per unit of displacement of the pressing elements is reduced.
- Peristaltic pump as claimed in claim 4, wherein the pressing means are adapted to feed to the cavity under pressure a quantity of additional filling medium which is adjustable as desired such that the quantity of medium circulated per unit of displacement of the pressing elements is adjustable.
- Peristaltic pump as claimed in any of the foregoing claims, wherein the filling medium is a liquid.
- Peristaltic pump as claimed in claim 6, wherein the liquid is water.
- Peristaltic pump as claimed in claim 6, wherein the liquid is a coolant and lubricant.
- Peristaltic pump as claimed in any of the claims 1-5, wherein the filling medium is a gas.
- Peristaltic pump as claimed in claim 9, wherein the gas is air.
- Peristaltic pump as claimed in any of the claims 1-5, wherein the filling medium is a combination of a liquid and a gas.
- Peristaltic pump as claimed in any of the claims 9-11, wherein a chosen pressure prevails in the gas.
- Peristaltic pump as claimed in any of the foregoing claims, comprising adjusting means for adjusting the pressure in the filling medium present in the cavity.
- Peristaltic pump as claimed in claim 13, wherein the adjusting means comprise a cylinder in which a piston is sealingly displaceable and fixable at a position to be selected, wherein a space bounded by the cylinder and the piston connects to the cavity in the pump housing.
- Peristaltic pump as claimed in any of foregoing claims, comprising pressure difference means for creating a chosen positive pressure difference between the interior of the hose and the medium present in the cavity such that the hose has a tendency to expand.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2000167A NL2000167C2 (en) | 2006-07-28 | 2006-07-28 | Peristaltic pump. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1884663A1 true EP1884663A1 (en) | 2008-02-06 |
Family
ID=37888150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07112809A Withdrawn EP1884663A1 (en) | 2006-07-28 | 2007-07-19 | Peristaltic pump |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080025854A1 (en) |
EP (1) | EP1884663A1 (en) |
JP (1) | JP2008032017A (en) |
NL (1) | NL2000167C2 (en) |
ZA (1) | ZA200706199B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113586407A (en) * | 2021-09-16 | 2021-11-02 | 布莱迪(杭州)科学仪器有限公司 | Independently-controlled dual-channel integrated peristaltic pump |
DE102020131083A1 (en) | 2020-11-24 | 2022-05-25 | ventUP GmbH | hose pump |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2495935A (en) | 2011-10-25 | 2013-05-01 | Watson Marlow Ltd | Peristaltic pump with tube end fitting |
GB2495937A (en) * | 2011-10-25 | 2013-05-01 | Watson Marlow Ltd | Peristaltic pump head with auxiliary leakage chamber |
CN102513020B (en) * | 2011-12-02 | 2014-04-02 | 上海科勒电子科技有限公司 | Gas and liquid mixed liquid supply and conveying device |
JP2014010078A (en) * | 2012-06-29 | 2014-01-20 | Jgc Corp | Transfer method of solid liquid mixture and transfer device thereof |
DE102013106170A1 (en) * | 2013-06-13 | 2014-12-31 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Pump for conveying a liquid |
GB2521226A (en) * | 2013-12-16 | 2015-06-17 | Watson Marlow Bredel B V | An end fitting for a tube housed by a cavity and a method of installing a tube in a cavity |
DE102017104395A1 (en) | 2017-03-02 | 2018-09-06 | Qonqave Gmbh | Pump device for conveying at least one conveying means |
CN107503923A (en) * | 2017-09-22 | 2017-12-22 | 保定准择恒流泵制造有限公司 | Wriggling Pump Head and peristaltic pump |
CN113062852B (en) * | 2021-05-02 | 2024-03-29 | 石河子大学 | Adjustable squeeze roller type hose pump |
CN115628206B (en) * | 2022-09-27 | 2023-07-25 | 深圳华星恒泰泵阀有限公司 | Multiunit connection peristaltic pump convenient to pipeline is spacing |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB713239A (en) * | 1952-08-20 | 1954-08-04 | Ames Crosta Mills & Company Lt | Improvements in and relating to flexible tube pumps |
DE3703124A1 (en) * | 1987-02-03 | 1988-08-11 | Manfred Streicher | HOSE PUMP |
WO1991016542A1 (en) * | 1990-04-12 | 1991-10-31 | Bredel Exploitatie B.V. | Peristaltic pump with retractable pressing members |
DE4303319A1 (en) * | 1993-02-05 | 1994-08-11 | Putzmeister Maschf | Vacuum pumping device |
US6171082B1 (en) * | 1997-01-22 | 2001-01-09 | Medtronic, Inc. | Peristaltic pumping mechanism |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2428619A (en) * | 1944-11-06 | 1947-10-07 | Douglas Norvel | Rotary pump or the like |
US3103178A (en) * | 1961-08-11 | 1963-09-10 | Ronald E Thompson | High-capacity pump of tube-compression type |
US4482347A (en) * | 1982-08-12 | 1984-11-13 | American Hospital Supply Corporation | Peristaltic fluid-pumping apparatus |
DE3320091A1 (en) * | 1983-06-03 | 1984-12-06 | Streicher, Irmgard, 7141 Beilstein | HOSE PUMP |
US4522571A (en) * | 1984-03-05 | 1985-06-11 | Little Robert K | Peristaltic pump |
US4909710A (en) * | 1989-10-23 | 1990-03-20 | Fisher Scientific Company | Linear peristaltic pump |
US5217355A (en) * | 1991-08-05 | 1993-06-08 | Imed Corporation | Two-cycle peristaltic pump with occlusion detector |
DE9205733U1 (en) * | 1992-04-29 | 1993-09-02 | Magnus Gmbh, 42859 Remscheid | Peristaltic pump |
DE4214917A1 (en) * | 1992-05-11 | 1993-11-18 | Allweiler Ag | Peristaltic pump |
WO1994004257A1 (en) * | 1992-08-11 | 1994-03-03 | American Cyanamid Company | Apparatus for combining liquids |
GB9815394D0 (en) * | 1998-07-15 | 1998-09-16 | Bredel Hose Pumps B V | Peristalic pumps |
US20010016706A1 (en) * | 1999-08-31 | 2001-08-23 | Kurt D. Leukanech | Peristaltic pump |
-
2006
- 2006-07-28 NL NL2000167A patent/NL2000167C2/en not_active IP Right Cessation
-
2007
- 2007-07-19 EP EP07112809A patent/EP1884663A1/en not_active Withdrawn
- 2007-07-26 ZA ZA200706199A patent/ZA200706199B/en unknown
- 2007-07-27 US US11/881,828 patent/US20080025854A1/en not_active Abandoned
- 2007-07-30 JP JP2007197608A patent/JP2008032017A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB713239A (en) * | 1952-08-20 | 1954-08-04 | Ames Crosta Mills & Company Lt | Improvements in and relating to flexible tube pumps |
DE3703124A1 (en) * | 1987-02-03 | 1988-08-11 | Manfred Streicher | HOSE PUMP |
WO1991016542A1 (en) * | 1990-04-12 | 1991-10-31 | Bredel Exploitatie B.V. | Peristaltic pump with retractable pressing members |
DE4303319A1 (en) * | 1993-02-05 | 1994-08-11 | Putzmeister Maschf | Vacuum pumping device |
US6171082B1 (en) * | 1997-01-22 | 2001-01-09 | Medtronic, Inc. | Peristaltic pumping mechanism |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020131083A1 (en) | 2020-11-24 | 2022-05-25 | ventUP GmbH | hose pump |
CN113586407A (en) * | 2021-09-16 | 2021-11-02 | 布莱迪(杭州)科学仪器有限公司 | Independently-controlled dual-channel integrated peristaltic pump |
CN113586407B (en) * | 2021-09-16 | 2023-09-01 | 布莱迪(杭州)科学仪器有限公司 | Dual-channel integrated peristaltic pump capable of being controlled independently |
Also Published As
Publication number | Publication date |
---|---|
ZA200706199B (en) | 2008-06-25 |
US20080025854A1 (en) | 2008-01-31 |
JP2008032017A (en) | 2008-02-14 |
NL2000167C2 (en) | 2008-01-29 |
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