EP0569874A1 - Pompe à tuyau - Google Patents

Pompe à tuyau Download PDF

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Publication number
EP0569874A1
EP0569874A1 EP93107434A EP93107434A EP0569874A1 EP 0569874 A1 EP0569874 A1 EP 0569874A1 EP 93107434 A EP93107434 A EP 93107434A EP 93107434 A EP93107434 A EP 93107434A EP 0569874 A1 EP0569874 A1 EP 0569874A1
Authority
EP
European Patent Office
Prior art keywords
rotor
pump
shaft
peristaltic pump
bores
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.)
Granted
Application number
EP93107434A
Other languages
German (de)
English (en)
Other versions
EP0569874B1 (fr
Inventor
Werner Wehling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allweiler GmbH
Original Assignee
Allweiler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allweiler AG filed Critical Allweiler AG
Publication of EP0569874A1 publication Critical patent/EP0569874A1/fr
Application granted granted Critical
Publication of EP0569874B1 publication Critical patent/EP0569874B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—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
    • F04B43/1276—Means for pushing the rollers against the tubular flexible member

Definitions

  • the invention relates to a peristaltic pump with pump hose arranged in a pump housing and having externally accessible connection ends and having an elastically deformable wall, which is inserted with a partially circular region around a shaft of a rotor of the peristaltic pump and at a radial distance therefrom into the pump housing and its cross section through radially pressure rollers protruding from the rotor can be changed, which press the pump tubing against a correspondingly curved fixed abutment, at least in its curved area while reducing its internal volume.
  • Such a peristaltic pump is described in GB-PS 628 785 with a pump hose and a pair of pressure rollers, which creates a chamber section closed off by two pinch points in the hose interior.
  • the pressure rollers roll on the fixed pump hose supported on the abutment, and with them those pinch points migrate, as a result of which the liquid or the like present in the hose interior.
  • Conveyed material is conveyed from the hose inlet to the outlet end of the pump hose; thanks to the restoring force of the hose wall, the pinch point close to the hose inlet causes suction force on the incoming material, which is then transported from the chamber section described above to the outlet end of the pump hose.
  • the radial roller distance to the shaft of the rotor can be changed, since the roller axes are held by a movable carrier. This is moved parallel to the shaft and at an angle to a straight line through the central axis of the shaft and roller axis.
  • Such Construction is particularly unfavorable if the setting is not made by a specialist - that is, incorrectly if necessary; a changing pressure roller setting is difficult to control and leads to different pump outputs per pressure roller stroke, and the pulsation is increased.
  • the inventor has set itself the goal of creating a peristaltic pump of the type described at the outset with which the identified defects are remedied.
  • the rotor itself has bearing eyes or bores for the roller axis of the pressure roller, which is interchangeably supported in an aligned pair of bores parallel to the shaft of the rotor.
  • the aligned pairs of bores are accommodated in two rotor plates of the rotor arranged at an axial distance from one another.
  • the rotor plates are advantageously in one piece with a central web of the rotor that receives the shaft and preferably offer partially circular outer edges in the region of the bores, beyond which a part of the pressure roller cross section projects radially.
  • Each of the rotor plates is provided with a plurality of bores lying side by side on a respective construction circle around the shaft, two bores of each rotor plate lying on a common construction circle, and moreover according to the invention on a common diameter.
  • the radii of the construction circles are of different lengths, and the length of the radii increases in one direction - preferably by about 0.5 to 1.5 mm in each case - gradually, in particular against the direction of rotation of the rotor.
  • the roller axles of two pressure rollers are advantageously fixed by a common axle holder by a rigid material strip with two wing ends, which is held in the center of the shaft axis of the pump shaft, for example by an end screw of this pump shaft, and which engages the roller axes with its two wing ends. If the axle holder is also attached to the roller axles by means of end screws, it is secured in only one direction. It is therefore of particular importance that the free ends of the axle holder are inserted as locking webs in the side locking grooves of the two roller axles; this allows both radial and axial fixing and is particularly effective in preventing different pressure roller arrangements and positions.
  • the latching ends of the axle holder preferably engage with aligned latching edges in the latching grooves, and can therefore be inserted into both latching grooves from one side.
  • the forehead screw holding it in the rotor center - already mentioned - creates a kind of three-point fixation and prevents incorrect assembly of the axle bracket.
  • the four pressure roller positions on the runner are marked with embossed numbers or letters.
  • a hose pump 10 fixed laterally on a drive indicated only in the drawing for conveying liquid, granules or the like.
  • Medium has in a bowl-like pump housing 12 - an inner diameter d of approximately 320 mm and an inner height h of approximately 100 mm - with a housing wall 16 projecting from a housing base 14 on a pump shaft 18 a rotor 20.
  • the housing wall 16 ends in an outwardly projecting flange 22, onto which a pump cover 26 is screwed with the interposition of a seal 24.
  • Fig. 1 shows that a pump hose 30 is arranged approximately U-shaped in plan view on the inner surface of the housing wall 16, the free hose ends of which protrude into two wall sockets 32 of the housing wall 16, each of which is closed by means of a screwed-on stuffing box gland 34.
  • Each packing gland 34 is supported by a fixed pump pipe socket 36 - as an inlet or Spout for a medium to be conveyed - penetrated, which is inserted into the hose interior 31 at the end of the hose.
  • the mutually parallel wall connections 32 project approximately tangentially from the housing wall 16 and, for reasons of clarity, accommodate packing rings, gland base rings and the like, which are not shown.
  • the disk-like rotor 20 has an I-like cross section, the pump shaft 18 being seated in a central bearing bore 40 of the rotor 20 in its central web 38.
  • This bearing bore 40 is spanned by a wing-like strip as an axle holder 42, on the outside of which the head of an end screw 44 of the pump shaft 18 is supported.
  • the usual screw locks are not specifically mentioned here, that of the forehead screw 44 is designated 45.
  • central web 38 protrude radially at a distance i from one another two parallel rotor plates 46, 47 which are integral with it and which, according to FIG. 1, each have two approximately oval regions connected by a central web section, which have two partially circular outer edges on both sides of a line of symmetry G. 48 and delimit two opposing indentations 50 in the web area.
  • Each of the oval areas is provided with — here four — bores 52 (numbered “0” to “3” in FIG. 1) with a diameter e of approximately 25 mm on different construction circles K1 to K4; whose radii r1 to r4 are each stepped by approximately 0.5, radius r1 here measuring approximately 80 mm.
  • the equally large distance angles w between radial lines of adjacent bores 52 are between 26 and 28 °.
  • the two bores 52 with the number “1” receive roller axes 54 which are parallel to the pump shaft 18 and which are each surrounded by a bearing bush 56 of a pressure roller 58 between the rotor plates 46, 47.
  • These show an H-shaped profile cross section on both sides of the bearing bush 56 in FIG. 2.
  • the circumference 60 of the two pressure rollers 58 lying on a common diameter D rolls laterally when the pump shaft 18 rotates on the pump hose 30, which is supported against the inner surface of the housing wall 16, and squeezes its cross section so that the volume of the Hose interior 31 approaches the value zero until the hose interior 31 is closed at the pinch point.
  • the chamber section thus created transports the medium to be conveyed further in accordance with the rotor rotation.
  • the two roller axes 54 are mounted on both ends directly in the rotor 20, their bearing bores 52 are at the same distance from the axis A of the pump shaft 18 in the rotor plates 46, 47, and - as mentioned - on a common diameter D.
  • the radial and axial fixation of the Roller axles 54 take place through the wing-like axle holder 42, the latching ends 43 of which engage in radial peripheral slots or latching grooves 62 of the roller axles 54. As shown in FIG.
  • this axle holder 42 is mounted on the screw 44 on the one hand and in the locking grooves 62 on the other hand, that is to say at three points, and its locking edges 64 to be inserted into the locking grooves 62 and aligned with one another lie on a common side of the axle holder 42 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP93107434A 1992-05-11 1993-05-07 Pompe à tuyau Expired - Lifetime EP0569874B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4214914 1992-05-11
DE4214914A DE4214914A1 (de) 1992-05-11 1992-05-11 Schlauchpumpe

Publications (2)

Publication Number Publication Date
EP0569874A1 true EP0569874A1 (fr) 1993-11-18
EP0569874B1 EP0569874B1 (fr) 1995-07-26

Family

ID=6458267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107434A Expired - Lifetime EP0569874B1 (fr) 1992-05-11 1993-05-07 Pompe à tuyau

Country Status (3)

Country Link
US (1) US5372486A (fr)
EP (1) EP0569874B1 (fr)
DE (2) DE4214914A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2122600C (fr) * 1992-09-02 1998-10-13 Valery Viktorovich Skobelev Pompe pour liquides biologiques
US5851291A (en) * 1996-07-31 1998-12-22 Poterala; Robert J. Chemical foaming machine and mixing apparatus
US7223079B2 (en) * 2003-07-28 2007-05-29 The Coca-Cola Company Quick loading peristaltic pump
DE102012222358A1 (de) * 2012-12-05 2014-06-05 Mahle International Gmbh Elektrische Flüssigkeitspumpe
CN103498784A (zh) * 2013-09-18 2014-01-08 宁波天益医疗器械有限公司 用于臭氧免疫调节设备中的蠕动泵

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB245057A (en) * 1924-12-24 1926-01-21 Ernst Pohl Improvements in pumps suitable particularly for medical purposes
FR1000300A (fr) * 1949-11-24 1952-02-11 Appareil à transfuser le sang
CH453080A (fr) * 1965-12-02 1968-05-31 Binder Jean Charles Pompe
US3700361A (en) * 1971-07-08 1972-10-24 Sarns Inc Peristaltic pump construction
WO1983001984A1 (fr) * 1981-11-25 1983-06-09 Charles Henry Hackman Pompe peristaltique rotative
GB2112464A (en) * 1981-12-31 1983-07-20 Delasco Sa Peristaltic pump
US4432707A (en) * 1982-06-21 1984-02-21 Anko Motors, Inc. Roller assembly for peristaltic pump
DE3441402A1 (de) * 1983-11-22 1985-05-30 Bellco S.p.A., Mirandola, Modena Peristaltische pumpe fuer die koerperexterne blutzirkulation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US537049A (en) * 1895-04-09 Surgical pump
US2123781A (en) * 1936-06-16 1938-07-12 Charles J Huber Pump
US3384080A (en) * 1964-10-16 1968-05-21 Us Catheter & Instr Corp Portable spring powered infusion device having escapement means controlling speed ofinfusion
US3386382A (en) * 1966-08-15 1968-06-04 Possis Machine Corp Fluid material dispensing apparatus
US3565286A (en) * 1968-10-18 1971-02-23 Cryogenic Technology Inc Liquid programming and pumping apparatus
US4218197A (en) * 1978-07-06 1980-08-19 Beckman Instruments, Inc. Combined peristaltic pump and valve flow controller

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB245057A (en) * 1924-12-24 1926-01-21 Ernst Pohl Improvements in pumps suitable particularly for medical purposes
FR1000300A (fr) * 1949-11-24 1952-02-11 Appareil à transfuser le sang
CH453080A (fr) * 1965-12-02 1968-05-31 Binder Jean Charles Pompe
US3700361A (en) * 1971-07-08 1972-10-24 Sarns Inc Peristaltic pump construction
WO1983001984A1 (fr) * 1981-11-25 1983-06-09 Charles Henry Hackman Pompe peristaltique rotative
GB2112464A (en) * 1981-12-31 1983-07-20 Delasco Sa Peristaltic pump
US4432707A (en) * 1982-06-21 1984-02-21 Anko Motors, Inc. Roller assembly for peristaltic pump
DE3441402A1 (de) * 1983-11-22 1985-05-30 Bellco S.p.A., Mirandola, Modena Peristaltische pumpe fuer die koerperexterne blutzirkulation

Also Published As

Publication number Publication date
DE4214914A1 (de) 1993-11-18
US5372486A (en) 1994-12-13
DE59300397D1 (de) 1995-08-31
EP0569874B1 (fr) 1995-07-26

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