WO1997029285A1 - Mecanisme de pompe peristaltique - Google Patents

Mecanisme de pompe peristaltique Download PDF

Info

Publication number
WO1997029285A1
WO1997029285A1 PCT/AU1997/000069 AU9700069W WO9729285A1 WO 1997029285 A1 WO1997029285 A1 WO 1997029285A1 AU 9700069 W AU9700069 W AU 9700069W WO 9729285 A1 WO9729285 A1 WO 9729285A1
Authority
WO
WIPO (PCT)
Prior art keywords
discs
disc
pumping
bed
adjacent points
Prior art date
Application number
PCT/AU1997/000069
Other languages
English (en)
Inventor
Allan Richard Jones
Original Assignee
Allan R Jones Technologies Pty. Limited
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
Priority claimed from AUPN7996A external-priority patent/AUPN799696A0/en
Priority claimed from AUPN8174A external-priority patent/AUPN817496A0/en
Application filed by Allan R Jones Technologies Pty. Limited filed Critical Allan R Jones Technologies Pty. Limited
Priority to AU15849/97A priority Critical patent/AU702414B2/en
Publication of WO1997029285A1 publication Critical patent/WO1997029285A1/fr

Links

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
    • F04B43/1207—Machines, pumps, or pumping installations having flexible working members having peristaltic action the actuating element being a swash plate

Definitions

  • the present invention relates to peristaltic pumps and more particularly to a mechanical pump mechanism akin to that disclosed in my published International patent application W095/11383. the contents of which are incorporated herein by reference.
  • a pumping mechanism for providing a peristaltic pumping action of the kind described comprising a flexible fluid transmitting pumping element arranged in a substantially planar at least partially circular path, said pumping element having an inlet at one end and an outlet at its opposite end and being sandwiched between two discs and coupled to the respective discs around curved paths so as to move in sympathy with the relative motion of the discs by moving to reduce the fluid transmitting cross-sectional area of the pumping element as adjacent points on the discs move toward each other and to increase the fluid transmitting cross-sectional area of the pumping element as those adjacent points move away from each other, and wherein motion is imparted to both discs to reduce and increase the spacing between adjacent points on the circumference of the discs such that when a pair of adjacent points are at their closest the diametrally opposed adjacent points of the two discs are maximally separated and further wherein the spacing between the discs progressively varies circumferentially of the discs to impart a peristaltic pumping action of the kind described comprising a
  • the motion imparted to the discs in pumps of this aspect of the invention is achieved by a rotatable armature passing through the centre of the discs wherein the armature comprises a set of at least one radially projecting arm in contact with each disc but could be two diametrally opposed axially displaced radially projecting arms in contact with each disc or most preferably a set of three circumferentially spaced apart radially projecting arms in contact with each disc in a similar manner to that as shown in Figs. 4-9 of W095/11383.
  • two arms have axes in a common radial plane of the armature with the other arm being axially displaced relative to the two arms.
  • Each disc then being mounted to the armature by having the two arms on one side of the disc and the other arm on the other side of the disc.
  • the pumping element can take a form as shown in Figs. 4-9 of my above referenced published International patent application or as clamped together separate circular flat sheets of flexible material with a substantially rigidly formed inlet and outlet openings which are not acted upon by the relative motion between the discs due to shaped surfaces or detents on the discs adjacent the inlet and outlet openings.
  • Preshaped or planar pumping elements should be suitable for use with the invention.
  • the armature incorporates an eccentric camming surface which assists opening of the pumping element during separation of the discs.
  • the cam surface being oriented on the armature to provide a complementary opening action to the pumping element relative to the opening action achieved by the radially projecting arms as described above.
  • the discs are closed by compressing rollers acting against the outer edge of respective discs in an opposed manner while the discs are able to swivel toward and away from each other at their perimeters by being centrally mounted on swivel bearings on a common central axis.
  • Another embodiment provides a positive closing and opening action to the discs by having the discs mounted on swivel bearings as well as compressing rollers as mentioned above but in this case there are also included rollers acting on the inner or opposed disc faces to separate the discs. Those inner face rollers being diametrally opposed to the compressing rollers.
  • the motion of the discs is achieved by mechanical action around their perimeters rather than via rotation of a central armature.
  • the functionality of the aforementioned known mechanical pumping arrangements are retained but in this second aspect of the invention there is at least one disc acting on a pumping element where the part of that disc acting on the element takes the form of at least a portion of a helical spiral.
  • the disc acts against the pumping element by squeezing the element between the disc and a fixed pump bed and where the pump bed may be shaped as a complementary spiral surface.
  • each of those discs is only required to oscillate to a part of the extent of a spiral disc that moves against a fixed pumping bed to achieve the same pumping effect.
  • each disc functions to interact with pumping elements on each side of the disc.
  • the end discs of the stack can interact with fixed pumping beds.
  • the motion imparted to the discs in pumps of the second aspect of the invention is achieved by a rotatable armature passing through the centre of the discs in the manner shown in the above referenced applications or by means of rollers or rotating drums.
  • pumps of this invention allow for a 360° pumping cycle in conjunction with the provision of an inlet and outlet at the same tangent to the pumping disc.
  • Fig. 1 shows an exploded perspective view of a first embodiment of a peristaltic pump arrangement in accord with the first aspect of the present invention
  • Fig. 2 is a cross-sectional view of the embodiment of Fig. 1 in its assembled form in one orientation;
  • Fig. 3 is the same view as Fig. 2 but with the discs in the opposite orientation;
  • Fig. 4 is a schematic sectional view of a second embodiment;
  • Fig. 5 is a schematic sectional view of a third embodiment
  • Fig. 6 is an exploded view of the components of a double spiral disc arrangement in accord with an embodiment of the second aspect of the present invention
  • Fig. 7 is a cross-sectional view of the embodiment of Fig. 6 within a container or casing;
  • Fig. 8 is a plan view of Fig 7;
  • Fig. 9(a) is a cross-sectional view at the perimeter of the pump of Fig. 6 where the inlet and outlet pass each other;
  • Fig. 9(b) is the same view as Fig. 9(a) but where the inlet and outlet are compressed by the discs;
  • Fig. 10 is a perspective view of the essential components of a single spiral pumping disc pump in spaced apart relation;
  • Fig. 11 is an exploded perspective view of a further embodiment in accord with the second aspect of the present invention.
  • Fig. 12 is a perspective view of a still further embodiment of the second aspect of the invention being similar to the embodiment of Fig. 6;
  • Fig. 13 is an exploded prospective view of yet another embodiment of the second aspect of the invention
  • Fig. 14 is an exploded perspective view of major components of a modification of the embodiment of Fig. 13;
  • the pump 10 of the first embodiment as shown in Figs. 1-3 of the drawings comprises an outer casing having two halves 11 which contain in the assembled condition two movable discs 12 held by armature 13 between respective sets of radially projecting conical rollers 13 and 14.
  • Each set comprises a pair of rollers 13 which have their axes in a common transverse plane of armature 15 and a third roller 14 axially offset on the armature and with its axis in a different transverse plane.
  • rollers 13 contact a common face of disc 12 while roller 14 contacts the other face of its respective disc 12.
  • Pumping element 16 is sandwiched between the discs 12 and coupled to those discs via upstanding projections 17 as is more clearly shown in Figs. 2 and 3.
  • Pumping element 16 is formed from two toroidal planar sheets of flexible material which are clamped together at their outer perimeter between flanges 18 of the two casing halves 11. The internal perimeter of the planar pumping element 16 being clamped together between rings 19.
  • the centre of armature 15 incorporates a camming surface 20.
  • the function of camming surface 20 can be clearly seen in Figs. 2 and 3 where it is oriented to assist opening of the pumping element 16 by pushing rings 19 laterally of the armature during opening separation of discs 12 as shown to the left of Fig. 2 and to the right of Fig. 3 as viewed in those drawings.
  • peristaltic pumping action of the embodiment of Figs. 1-3 is achieved by rotation of armature 15 which in conjunction with contact between roller sets 13, 14 and respective discs 12 imparts a peristaltic pumping action to pumping element 16.
  • Inlet 21 and outlet 22 are not acted upon by the motion of discs 12 and are accommodated in complementary recesses 23 provided in flanges 18 of the casing halves 11 and detents 24 in discs 12.
  • the casing 11 is formed so as to be flexed axially of the armature 15 while containing water so as to form a water box.
  • the flexure of the casing halves 11 in conjunction with the contained water is adapted to provide an hydraulic assist to the opening of the pumping element 16 during operation of the pump 10 in a manner that is understood in the art.
  • a pump 30 comprises two movable discs 31 mounted on several bearings 32 supported on central shaft 33.
  • Tubular pumping element 34 is positioned around the perimeters of discs 31 and sandwiched between those discs.
  • the peristaltic action applied to element 34 is achieved by rotation of rollers 35 on gear wheels 36 driven by pinions 37 via drive shaft 38.
  • Gear wheels 36 being rotatably mounted on shaft 33.
  • Rollers 35 are located in opposed relation to each other as shown in
  • Fig. 4 to move the perimeters of discs 31 toward each other and compress element 34.
  • Side thrust applied to gear wheels 36 by the resistance of element 34 to being compressed as shown is countered via a load bearing rolling contact between each roller 35 and a circular path on the inner face of a pump casing 39 which shown only in part at the bottom right hand corner of Fig. 4.
  • rotation of drive shaft 38 and pinions 37 drives gear wheels 36 in unison so that rollers 35 move around adjacent locations of opposed discs 31 to compress element 34 in circular fashion as discs 31 swivel on bearings 32. No rotation of discs 31 occurs while they move toward and away from each other under the action of rollers 35 to impart a peristaltic pumping action to element 34.
  • a pair of discs 41 are mounted on swivel bearings 42 in similar manner to the arrangement of the embodiment of Fig. 4.
  • FIG. 6-9 depict a double acting spiral disc arrangement which contrasts with a single disc form of pump as depicted in a prior art form in
  • peristaltic pump 50 comprises spaced apart spiral discs 51 each with a planar centre section 52 which interacts with the rollers 53 mounted on armature 54.
  • the helical spiral form of discs 51 is such that the pumping tube or element 55 of any suitable shape is oriented so that the inlet and outlet to the pump occurs in overlapping relation at the adjacent free ends of each spiral 51 which fit in complementary relation to each other with pumping element 55 sandwiched therebetween.
  • Pumping element on tube 55 may be freely disposed between discs 51 or fixed to those discs after the manner shown in Figs. 1-3.
  • Radially projecting tabs 56 with through bores 57 are adapted to fit over fixed posts to retain the relative relation between two spiral discs 51 during peristaltic pumping action under the motion applied by rollers 53 during rotation of armature 54 so as to prevent rotation of the discs.
  • the inlet and outlet of the pumping element 55 can be placed side by side in overlapping relation and in the same plane.
  • the combination of the 360° of disc pumping action and side by side layout of the inlet and outlet enables a compact peristaltic pump to be provided and one in which the replacement of the pumping element can be readily facilitated.
  • Fig. 10 shows the relevant components of a single spiral disc pump 80 having a single spiral pumping disc 81 fitted above a stationary pumping bed 82.
  • the pumping bed 82 and the disc 81 incorporate cutaway sections 84, 85 where the inlet and outlet of pumping element or tube 83 overlap.
  • Those cutaways 84 and 85 on bed 82 and disc 81, respectively, are such that the entry and exit of tube 83 into the pump can be provided with ease.
  • a pump of this invention be fitted within a water box.
  • That water box can be provided with a cam which acts against a wall of the box.
  • 55, 83 may be employed in place of or in conjunction with fixedly connecting the pumping tube or element to respective adjacent pumping discs or between a pumping disc and fixed pumping bed as shown in the examples in the aforementioned International patent application and in accord with the first aspect of the present invention.
  • Fig.9(a) the section shown is at the perimeter of discs 51 in the direction of section IV-IV of Fig. 6 with the inlet and the outlet of the tube 55 in their open position while in Fig. 9(b) the tube 55 at inlet and outlet is undergoing crushing forces from discs 51.
  • the embodiment of Fig. 11 employs a single movable helical disc 90 which operates against an elliptically cross-sectioned tube or pumping membrane 91 positioned on a fixed helical/spiral pumping bed 92 to achieve a peristaltic pumping action.
  • Inlet and/or outlet 93 project from housing parts 94 with clamping pieces 95 gripping membrane 91 at each end.
  • Fig. 12 is a twin disc version of the embodiment of Fig. 11 which functions in a similar manner to the embodiment of Fig. 6, and wherein like parts are similarly numbered to those of the embodiment of Fig. 11.
  • the membrane 91 is firmly attached to disc 90 and bed 92 (Fig. 11) or to both discs 90 (Fig. 12).
  • a membrane which is unattached while being resilient enough to return to its original shape once the compressive pumping force is removed.
  • Each of the embodiments of Figs. 13-16 employs a positive (pressure closure) and negative (suction opening) hydraulically controlled multi- chambered arrangement which acts by sequentially compressing and restoring the shape of pumping tube 100.
  • Like parts as between Figs. 13 and 14 are similarly numbered as are like parts between Figs. 11 and 13.
  • a helical disc 90 oscillates around multiple chambers 101 with each chamber 101 containing an associated part of membrane 100 and a piston 102.
  • Each piston 102 works on its associated contained volume of hydraulic fluid which fills that chamber.
  • membrane 100 closes and opens as a result of the positive and negative pressure applied by each piston 102 through the hydraulic fluid.
  • each membrane section 100 within each chamber 101 is achieved under the action of oscillating disc 90 which are positively connected to each piston 102 as shown, for example, in Figs. 15(a) and (b).
  • Figs 13-16 it has been found that 10 to 12 chambers are required to achieve a relatively smooth pumping action.
  • Fig. 14 ten chambers are shown which are operated upon via an outer planar control ring 103 accommodating two disc working rollers 104 while the underside disc 105 is mounted with a single working roller 104.
  • a swivel bearing 106 mounts disc 90 to the central shaft 107. That operating mechanism being used in place of armature 96 as employed in the embodiment of Fig.13.
  • separate chambers 101 forming a spiral configuration may contain tubular of elliptical membranes or a common diaphragm.
  • a peristaltic pumping action is applied to the membrane or diaphragm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Un mécanisme de pompage péristaltique (50) comprend un élément souple (55) de pompage d'un liquide, disposé sur un parcours partiellement circulaire et pris en sandwich entre deux disques (51), auxquels il est couplé. Un mouvement est imprimé aux deux disques (51) pour réduire et augmenter la distance entre des points voisins situés sur la circonférence de ces disques, et conférer ainsi un contact roulant circulaire à l'élément de pompage (55), ce qui produit un effet de pompage péristaltique. Dans un deuxième mode de réalisation, l'élément de pompage (55) est pris en sandwich entre un disque mobile de forme hélicoïdale et un socle de pompage d'une forme complémentaire.
PCT/AU1997/000069 1996-02-09 1997-02-10 Mecanisme de pompe peristaltique WO1997029285A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15849/97A AU702414B2 (en) 1996-02-09 1997-02-10 Peristaltic pump mechanism

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPN7996 1996-02-09
AUPN7996A AUPN799696A0 (en) 1996-02-09 1996-02-09 Peristaltic pump mechanism
AUPN8174 1996-02-20
AUPN8174A AUPN817496A0 (en) 1996-02-20 1996-02-20 Helical peristaltic pump mechanism

Publications (1)

Publication Number Publication Date
WO1997029285A1 true WO1997029285A1 (fr) 1997-08-14

Family

ID=25645109

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1997/000069 WO1997029285A1 (fr) 1996-02-09 1997-02-10 Mecanisme de pompe peristaltique

Country Status (1)

Country Link
WO (1) WO1997029285A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7556481B2 (en) * 2005-08-26 2009-07-07 Baxter International Inc. Rotary axial peristaltic pumps and related methods
CN103338796A (zh) * 2010-10-13 2013-10-02 弗雷泽纽斯卡比德国有限公司 泵模块、泵基础模块和泵系统
CN104819135A (zh) * 2015-03-28 2015-08-05 肖立峰 摆动管道泵
DE102017104376A1 (de) 2017-03-02 2018-09-06 Qonqave Gmbh Fördermembran für eine Pumpenvorrichtung
DE102017104400A1 (de) 2017-03-02 2018-09-06 Qonqave Gmbh Pumpenvorrichtung zu einer Förderung zumindest eines Fördermittels
CN113027736A (zh) * 2021-05-19 2021-06-25 楚天源创生物技术(长沙)有限公司 一种输液泵

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818815A (en) * 1956-06-01 1958-01-07 Ernest R Corneil Liquid transfer machine
WO1995011383A1 (fr) * 1993-10-19 1995-04-27 Allan Richard Jones Tube pour pompe peristaltique
US5458469A (en) * 1992-04-29 1995-10-17 Hauser; Jean-Luc Friction-free infusion pump system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818815A (en) * 1956-06-01 1958-01-07 Ernest R Corneil Liquid transfer machine
US5458469A (en) * 1992-04-29 1995-10-17 Hauser; Jean-Luc Friction-free infusion pump system
WO1995011383A1 (fr) * 1993-10-19 1995-04-27 Allan Richard Jones Tube pour pompe peristaltique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT, Accession No. 91-229405A, Class Q56; & SU,A,1 610 072 (KISH POLY) 30 November 1990. *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7556481B2 (en) * 2005-08-26 2009-07-07 Baxter International Inc. Rotary axial peristaltic pumps and related methods
US7762795B2 (en) 2005-08-26 2010-07-27 Baxter International Inc. Rotary axial peristaltic pumps and related methods
US8297954B2 (en) 2005-08-26 2012-10-30 Baxter International Inc. Rotary axial peristaltic pumps and related methods
US8308456B2 (en) 2005-08-26 2012-11-13 Baxter International Inc. Rotary axial peristaltic pumps and related methods
CN103338796A (zh) * 2010-10-13 2013-10-02 弗雷泽纽斯卡比德国有限公司 泵模块、泵基础模块和泵系统
CN104819135A (zh) * 2015-03-28 2015-08-05 肖立峰 摆动管道泵
DE102017104376A1 (de) 2017-03-02 2018-09-06 Qonqave Gmbh Fördermembran für eine Pumpenvorrichtung
DE102017104400A1 (de) 2017-03-02 2018-09-06 Qonqave Gmbh Pumpenvorrichtung zu einer Förderung zumindest eines Fördermittels
WO2018158425A1 (fr) 2017-03-02 2018-09-07 Qonqave Gmbh Membrane de transport pour dispositif de pompage
WO2018158423A1 (fr) 2017-03-02 2018-09-07 Qonqave Gmbh Dispositif à pompe pour le transport d'au moins un moyen de transport
US11293426B2 (en) 2017-03-02 2022-04-05 Qonqave Gmbh Pump device for delivery of at least one delivery means
CN113027736A (zh) * 2021-05-19 2021-06-25 楚天源创生物技术(长沙)有限公司 一种输液泵

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