EP0200448A2 - Peristaltic pump - Google Patents
Peristaltic pump Download PDFInfo
- Publication number
- EP0200448A2 EP0200448A2 EP86302972A EP86302972A EP0200448A2 EP 0200448 A2 EP0200448 A2 EP 0200448A2 EP 86302972 A EP86302972 A EP 86302972A EP 86302972 A EP86302972 A EP 86302972A EP 0200448 A2 EP0200448 A2 EP 0200448A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- pump according
- disposed
- axial direction
- rotary member
- 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- Withdrawn
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
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
Definitions
- This invention relates to peristaltic pumps.
- Such pumps essentially comprise a deformable tube and means producing a pinch-like deformation of the tube which travels along the tube forcing the contents of the tube from one end to the other.
- Peristaltic pumps are used in situations where corrosive liquids or abrasive particles in suspensions or slurries might damage the works of ordinary pumps, or where, conversely, such ordinary pumps might damage particles in suspensions to be pumped, for example corpuscles in blood in heart bypass or dialysis machines.
- the deformable tube is bent around a major arc of a circle.
- Rollers or sliding shoes mounted on a wheel on a shaft extending axially of the circle revolve about the axis of the circle in contact with the radially inner part of the tube thereby pinching the tube against an outer containing rim.
- the shaft is connectible to a motor, usually an electric motor, often through a reduction gear arrangement, the whole being mounted in a supporting framework.
- a disadvantage of this arrangement is its sheer bulk, much of which is comprised by the motor and the supporting framework.
- elbow connectors have to be used which add further to the bulk and complexity of the arrangements and are potential blockage regions where solids can accumulate on account of differential rates of flow at different positions radially of the arc of the elbow.
- the present invention provides a peristaltic pump which avoids these problems by making the pump assembly itself smaller by a novel layout, and also by reducing the size of motor required for given back pressure and throughput requirement, as well as simplifying installation and eliminating potential blockage regions.
- the invention comprises a peristaltic pump comprising a substantially rectilinear pinch-deformable tube having an axial direction and tube deforming means extending axially of said tube and movable perpendicularly to said axial direction so as to engage said tube and deform it peristaltically at axial positions successively displaced in one direction therealong.
- Said tube deforming means may comprise a rotary member having an axis of rotation substantially parallel to said axial direction.
- Said rotary member may comprise tube engaging means disposed helically on said rotary member.
- Said tube engaging means may comprise a continuous helical thread, smooth and rounded so as to be able to engage said tube with low friction to avoid substantial wear or damage.
- Said helically disposed tube engaging means may otherwise comprise a series of rotary cam like members.
- a flexible pressure member may be disposed between said tube and said cam-like members, flexing to deform said tube under the action of said cam-like members.
- Said tube and said tube deforming means may be disposed in a lubricant bath.
- the pump may comprise an electric motor connected to move said tube deforming means.
- the peristaltic pump illustrated in Figures 1 and 2 comprises a substantially rectilinear pinch - deformable tube 11 having an axial direction indicated by the broken line 12 and tube deforming means 13 extending axially of said tube 11 and movable perpendicularly to said axial direction so as to engage said tube 11 and deform it peristaltically at positions successively displaced in one direction therealong.
- Said tube deforming means 13 comprise a rotary member 14 having an axis of rotation (indicated by broken line 15) substantially parallel to said axial direction 12.
- Said rotary member 14 in each case comprises tube engaging means 16 disposed helically on said rotary member 14.
- Figure 1 illustrates said helically disposed tube engaging means 16 comprising a continuous helical thread, smooth and rounded so as to be able to engage said tube 11 with low friction to avoid substantial wear or damage.
- Figure 2 illustrates said helically disposed tube engaging means 16 comprising a series of cam-like members 16a, 16b, ....
- a flexible pressure member 17, for example, a strip of spring steel, is disposed between said tube 11 and said cam-like members 16a, 16b, ... and flexes to deform said tube 11 under the action of said cam-like members.
- the tube 11 and tube deforming means 13 are disposed in a lubricant bath 18. End walls 18a of the bath 18 include bearings 19 for the rotary member 14 and pipe connectors 21 for attachment of inlet and outlet pipes to the tube 11.
- the bath 18 is rigidly constructed and includes a lengthwise containing wall 18b against which the tube deforming means 13 pinch deform the tube 11.
- An electric motor 23 is mounted on the outside of the bath 18 connected directly or through a gearbox 24 to the rotary member 14.
- the pumps illustrated in Figures 1 and 2 have a small axial cross-section as compared to conventional peristaltic pumps of equivalent bore in which the deformable tube is bent around a major arc of a circle. This means at once that they can be used in confined spaces such for example as bore holes or in underground pipe line installations or in nests of pipes.
- a peristaltic pump according to the invention can be located underground in a pipe line installation much more easily than can a conventional peristaltic pump.
- the flow is straight through and does not have to pass through elbow joints connecting the pump to the pipe ends, which can be potential blocking regions due to deposition of solids at the bends.
- the resistance to flow is less because of the straight-through configuration.
- the point of application of pinching force to the pipe 11 is close to the axis of the rotary member 14, instead of being at outer radius as in conventional peristaltic pumps, less driving torque is required, so the motor can be correspondingly smaller, for a given back pressure and throughput requirement.
- the length of the tube 11 and the pitch of the helical arrangement can be so chosen that there is always at least one pinched part of the tube 11 to prevent return flow.
- Peristaltic pumps according to the invention may be produced in a wide range of sizes from very large for heavy industrial and civil engineering applications to miniature. At either extreme, clearly, the saving in bulk and power requirements offers considerable advantages over conventional peristaltic pumps.
Abstract
Description
- This invention relates to peristaltic pumps.
- Such pumps essentially comprise a deformable tube and means producing a pinch-like deformation of the tube which travels along the tube forcing the contents of the tube from one end to the other. Peristaltic pumps are used in situations where corrosive liquids or abrasive particles in suspensions or slurries might damage the works of ordinary pumps, or where, conversely, such ordinary pumps might damage particles in suspensions to be pumped, for example corpuscles in blood in heart bypass or dialysis machines.
- In the usual form of such pumps, the deformable tube is bent around a major arc of a circle. Rollers or sliding shoes mounted on a wheel on a shaft extending axially of the circle revolve about the axis of the circle in contact with the radially inner part of the tube thereby pinching the tube against an outer containing rim. The shaft is connectible to a motor, usually an electric motor, often through a reduction gear arrangement, the whole being mounted in a supporting framework.
- A disadvantage of this arrangement is its sheer bulk, much of which is comprised by the motor and the supporting framework. Moreover, to connect the arrangement in a pipeline, elbow connectors have to be used which add further to the bulk and complexity of the arrangements and are potential blockage regions where solids can accumulate on account of differential rates of flow at different positions radially of the arc of the elbow.
- The present invention provides a peristaltic pump which avoids these problems by making the pump assembly itself smaller by a novel layout, and also by reducing the size of motor required for given back pressure and throughput requirement, as well as simplifying installation and eliminating potential blockage regions.
- The invention comprises a peristaltic pump comprising a substantially rectilinear pinch-deformable tube having an axial direction and tube deforming means extending axially of said tube and movable perpendicularly to said axial direction so as to engage said tube and deform it peristaltically at axial positions successively displaced in one direction therealong.
- Said tube deforming means may comprise a rotary member having an axis of rotation substantially parallel to said axial direction. Said rotary member may comprise tube engaging means disposed helically on said rotary member.
- Said tube engaging means may comprise a continuous helical thread, smooth and rounded so as to be able to engage said tube with low friction to avoid substantial wear or damage.
- Said helically disposed tube engaging means may otherwise comprise a series of rotary cam like members. A flexible pressure member may be disposed between said tube and said cam-like members, flexing to deform said tube under the action of said cam-like members.
- Said tube and said tube deforming means may be disposed in a lubricant bath.
- The pump may comprise an electric motor connected to move said tube deforming means.
- Embodiments of a peristaltic pump according to the invention will now be described with reference to the accompanying drawings, in which:-
- Figure 1 is a sectional elevation of one embodiment,
- and Figure 2 is a sectional elevation of another embodiment.
- The peristaltic pump illustrated in Figures 1 and 2 comprises a substantially rectilinear pinch -
deformable tube 11 having an axial direction indicated by thebroken line 12 and tube deforming means 13 extending axially of saidtube 11 and movable perpendicularly to said axial direction so as to engage saidtube 11 and deform it peristaltically at positions successively displaced in one direction therealong. - Said tube deforming means 13 comprise a rotary member 14 having an axis of rotation (indicated by broken line 15) substantially parallel to said
axial direction 12. Said rotary member 14 in each case comprisestube engaging means 16 disposed helically on said rotary member 14. - Figure 1 illustrates said helically disposed
tube engaging means 16 comprising a continuous helical thread, smooth and rounded so as to be able to engage saidtube 11 with low friction to avoid substantial wear or damage. - Figure 2 illustrates said helically disposed
tube engaging means 16 comprising a series of cam-like members 16a, 16b, .... Aflexible pressure member 17, for example, a strip of spring steel, is disposed between saidtube 11 and said cam-like members 16a, 16b, ... and flexes to deform saidtube 11 under the action of said cam-like members. - It will be recognised that in either case a pinch-deformation, or peristaltic wave, is propagated in one direction along the
tube 11. Reversing the direction of rotation of the rotary member 14, of course, propagates the peristaltic wave in the opposite direction so that the pump is reversible. - The
tube 11 and tube deforming means 13 are disposed in alubricant bath 18. End walls 18a of thebath 18 includebearings 19 for the rotary member 14 andpipe connectors 21 for attachment of inlet and outlet pipes to thetube 11. Thebath 18 is rigidly constructed and includes a lengthwise containing wall 18b against which the tube deforming means 13 pinch deform thetube 11. - An
electric motor 23 is mounted on the outside of thebath 18 connected directly or through agearbox 24 to the rotary member 14. - The pumps illustrated in Figures 1 and 2 have a small axial cross-section as compared to conventional peristaltic pumps of equivalent bore in which the deformable tube is bent around a major arc of a circle. This means at once that they can be used in confined spaces such for example as bore holes or in underground pipe line installations or in nests of pipes. A peristaltic pump according to the invention can be located underground in a pipe line installation much more easily than can a conventional peristaltic pump.
- In a pipe line installation, the flow is straight through and does not have to pass through elbow joints connecting the pump to the pipe ends, which can be potential blocking regions due to deposition of solids at the bends. In any event, the resistance to flow is less because of the straight-through configuration. Furthermore, because the point of application of pinching force to the
pipe 11 is close to the axis of the rotary member 14, instead of being at outer radius as in conventional peristaltic pumps, less driving torque is required, so the motor can be correspondingly smaller, for a given back pressure and throughput requirement. - The length of the
tube 11 and the pitch of the helical arrangement can be so chosen that there is always at least one pinched part of thetube 11 to prevent return flow. - Peristaltic pumps according to the invention may be produced in a wide range of sizes from very large for heavy industrial and civil engineering applications to miniature. At either extreme, clearly, the saving in bulk and power requirements offers considerable advantages over conventional peristaltic pumps.
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8510382 | 1985-04-24 | ||
GB858510382A GB8510382D0 (en) | 1985-04-24 | 1985-04-24 | Peristaltic pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0200448A2 true EP0200448A2 (en) | 1986-11-05 |
EP0200448A3 EP0200448A3 (en) | 1987-02-04 |
Family
ID=10578098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86302972A Withdrawn EP0200448A3 (en) | 1985-04-24 | 1986-04-21 | Peristaltic pump |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0200448A3 (en) |
GB (2) | GB8510382D0 (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0354154A1 (en) * | 1988-08-05 | 1990-02-07 | Enrique Costa Bastart | Peristaltic pump |
EP0723081A1 (en) * | 1995-01-19 | 1996-07-24 | seepex Seeberger GmbH + Co | Anger pump for conveying fluid material |
US20110144567A1 (en) * | 2009-12-15 | 2011-06-16 | Alcon Research, Ltd. | Phacoemulsification Hand Piece With Integrated Aspiration Pump and Cartridge |
US20120083728A1 (en) * | 2009-12-08 | 2012-04-05 | Gary Sorensen | Phacoemulsification hand piece with integrated aspiration pump |
EP2941565A4 (en) * | 2013-03-15 | 2016-04-06 | Novartis Ag | Systems and methods for ocular surgery |
WO2016133912A3 (en) * | 2015-02-16 | 2016-11-10 | The Regents Of The University Of Colorado, A Body Corporate | Pump with external controlled compression and methods of pumping with external controlled compression |
US9693896B2 (en) | 2013-03-15 | 2017-07-04 | Novartis Ag | Systems and methods for ocular surgery |
US9915274B2 (en) | 2013-03-15 | 2018-03-13 | Novartis Ag | Acoustic pumps and systems |
US9962288B2 (en) | 2013-03-07 | 2018-05-08 | Novartis Ag | Active acoustic streaming in hand piece for occlusion surge mitigation |
US10182940B2 (en) | 2012-12-11 | 2019-01-22 | Novartis Ag | Phacoemulsification hand piece with integrated aspiration and irrigation pump |
WO2021068546A1 (en) * | 2019-10-12 | 2021-04-15 | 卡川尔流体科技(上海)有限公司 | Spiral peristaltic pump |
IT202100015332A1 (en) | 2021-06-11 | 2022-12-11 | Corequest Sagl | Peristaltic pumping device and medical equipment, in particular for dialysis, incorporating it |
WO2023025361A1 (en) | 2021-08-23 | 2023-03-02 | Lsm Pumper Aps | Linear peristaltic pump |
DE102014020115B3 (en) | 2014-12-17 | 2023-03-16 | Watson Marlow Gmbh | conveyor |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007120355A (en) * | 2005-10-26 | 2007-05-17 | Seiko Epson Corp | Fluid transport device |
US9545337B2 (en) | 2013-03-15 | 2017-01-17 | Novartis Ag | Acoustic streaming glaucoma drainage device |
US9126219B2 (en) | 2013-03-15 | 2015-09-08 | Alcon Research, Ltd. | Acoustic streaming fluid ejector |
EP3292935A1 (en) * | 2016-09-13 | 2018-03-14 | Unimate Robotica, S.L. | Device adapted to dosing pastry substances |
CN108260840A (en) * | 2016-12-30 | 2018-07-10 | 周安定 | The straight line peristaltic pump of food printing |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2629333A (en) * | 1950-07-01 | 1953-02-24 | Roger G Olden | Rotary compress pump |
DE2543185A1 (en) * | 1975-08-08 | 1977-02-10 | Ami Ginier | Peristaltic pump with delivery control unit - has timing cycle generator connected in series to preselection and control units for cyclic delivery |
GB2029514A (en) * | 1978-08-31 | 1980-03-19 | Charlesworth M | Peristaltic fluid-machines |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB369037A (en) * | 1931-04-22 | 1932-03-17 | Yoshinobu Wada | Improvements in or relating to a pumping apparatus for medical treatments |
GB923443A (en) * | 1960-11-21 | 1963-04-10 | Medtec Tools Ltd | Flexible tube pump |
GB1081818A (en) * | 1965-03-05 | 1967-09-06 | Distillers Co Yeast Ltd | Improvements in or relating to flexible tube pumps |
GB1572592A (en) * | 1977-06-13 | 1980-07-30 | Edwards J | Peristaltic pumps |
-
1985
- 1985-04-24 GB GB858510382A patent/GB8510382D0/en active Pending
-
1986
- 1986-04-18 GB GB08609525A patent/GB2174763A/en not_active Withdrawn
- 1986-04-21 EP EP86302972A patent/EP0200448A3/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2629333A (en) * | 1950-07-01 | 1953-02-24 | Roger G Olden | Rotary compress pump |
DE2543185A1 (en) * | 1975-08-08 | 1977-02-10 | Ami Ginier | Peristaltic pump with delivery control unit - has timing cycle generator connected in series to preselection and control units for cyclic delivery |
GB2029514A (en) * | 1978-08-31 | 1980-03-19 | Charlesworth M | Peristaltic fluid-machines |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0354154A1 (en) * | 1988-08-05 | 1990-02-07 | Enrique Costa Bastart | Peristaltic pump |
EP0723081A1 (en) * | 1995-01-19 | 1996-07-24 | seepex Seeberger GmbH + Co | Anger pump for conveying fluid material |
US9861522B2 (en) | 2009-12-08 | 2018-01-09 | Alcon Research, Ltd. | Phacoemulsification hand piece with integrated aspiration pump |
US20120083728A1 (en) * | 2009-12-08 | 2012-04-05 | Gary Sorensen | Phacoemulsification hand piece with integrated aspiration pump |
JP2013512760A (en) * | 2009-12-08 | 2013-04-18 | アルコン リサーチ, リミテッド | Lens emulsification handpiece with integrated suction pump |
JP2016027872A (en) * | 2009-12-08 | 2016-02-25 | アルコン リサーチ, リミテッド | Phacoemulsification hand piece with integrated aspiration pump |
US20180049921A1 (en) * | 2009-12-08 | 2018-02-22 | Novartis Ag | Phacoemulsification hand piece with integrated aspiration pump |
JP2017221695A (en) * | 2009-12-08 | 2017-12-21 | アルコン リサーチ, リミテッド | Phacoemulsification hand piece with integrated aspiration pump |
US20110144567A1 (en) * | 2009-12-15 | 2011-06-16 | Alcon Research, Ltd. | Phacoemulsification Hand Piece With Integrated Aspiration Pump and Cartridge |
US10182940B2 (en) | 2012-12-11 | 2019-01-22 | Novartis Ag | Phacoemulsification hand piece with integrated aspiration and irrigation pump |
US9962288B2 (en) | 2013-03-07 | 2018-05-08 | Novartis Ag | Active acoustic streaming in hand piece for occlusion surge mitigation |
EP2941565A4 (en) * | 2013-03-15 | 2016-04-06 | Novartis Ag | Systems and methods for ocular surgery |
US9750638B2 (en) | 2013-03-15 | 2017-09-05 | Novartis Ag | Systems and methods for ocular surgery |
US9915274B2 (en) | 2013-03-15 | 2018-03-13 | Novartis Ag | Acoustic pumps and systems |
EP3312422A1 (en) * | 2013-03-15 | 2018-04-25 | Novartis AG | A modular hand-held pump system for ocular surgery |
US9693896B2 (en) | 2013-03-15 | 2017-07-04 | Novartis Ag | Systems and methods for ocular surgery |
EP3540222A1 (en) * | 2013-03-15 | 2019-09-18 | Novartis AG | A modular hand-held pump system for ocular surgery |
DE102014020115B3 (en) | 2014-12-17 | 2023-03-16 | Watson Marlow Gmbh | conveyor |
US20180058437A1 (en) * | 2015-02-16 | 2018-03-01 | The Regents Of The University Of Colorado, A Body Corporate | Pump with external controlled compression and methods of pumping with external controlled compression |
WO2016133912A3 (en) * | 2015-02-16 | 2016-11-10 | The Regents Of The University Of Colorado, A Body Corporate | Pump with external controlled compression and methods of pumping with external controlled compression |
WO2021068546A1 (en) * | 2019-10-12 | 2021-04-15 | 卡川尔流体科技(上海)有限公司 | Spiral peristaltic pump |
IT202100015332A1 (en) | 2021-06-11 | 2022-12-11 | Corequest Sagl | Peristaltic pumping device and medical equipment, in particular for dialysis, incorporating it |
WO2022258716A1 (en) | 2021-06-11 | 2022-12-15 | Corequest Sagl | Peristaltic pumping device and medical apparatus, in particular for dialysis, incorporating it |
WO2023025361A1 (en) | 2021-08-23 | 2023-03-02 | Lsm Pumper Aps | Linear peristaltic pump |
Also Published As
Publication number | Publication date |
---|---|
GB2174763A (en) | 1986-11-12 |
EP0200448A3 (en) | 1987-02-04 |
GB8609525D0 (en) | 1986-05-21 |
GB8510382D0 (en) | 1985-05-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0200448A2 (en) | Peristaltic pump | |
US5722820A (en) | Progressing cavity pump having less compressive fit near the discharge | |
US5328341A (en) | Synchronizer assembly for a scroll fluid device | |
US2695694A (en) | Diaphragm mechanism for pump clutches | |
US20070215226A1 (en) | Pipe flow stabilizer | |
US20020012598A1 (en) | Gerotor pump having an eccentric ring housing with an integral pressure chamber | |
US5620313A (en) | Worm pump for flowable media | |
EP2610493B1 (en) | Stator seal structure for single-shaft eccentric screw pump | |
US2826152A (en) | Helical gear pump with bellows stator | |
US4417849A (en) | Variable geometry centrifugal pump | |
EP0565232A1 (en) | Liquid ring pumps with improved housing shapes | |
US3749531A (en) | Reversible fluid unit | |
US10227966B2 (en) | Epicyclical fluid pump assembly | |
DE10334481A1 (en) | Drive for dry-compressing spindle vacuum pump for gases has integrated belt drive for increase of rotor RPM and synchronization of spindle rotor pair | |
EP3114350B1 (en) | Three-gear pump system for low viscosity fluids | |
CN210068445U (en) | Double-pipeline peristaltic pump | |
EP0408992A2 (en) | Rotating fluid machine for reversible operation from turbine to pump and vice-versa | |
CN215949786U (en) | Peristaltic pump with noise reduction structure | |
SU1209928A1 (en) | Peristaltic pump | |
CN109854504B (en) | Energy-saving screw molded line | |
RU1788334C (en) | Vane pump | |
KR100853549B1 (en) | mechanical energy generator with uses fluid pressure in the flexible tube | |
EP0223335A2 (en) | Improvements in or relating to rotary positive displacement fluid machines | |
CN210003503U (en) | Energy-saving screw molded line | |
RU2755845C1 (en) | Radial displacement modulus |
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: A2 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
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: 19870805 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: RUSSELL, DEREK VINCENT |