EP0322594A1 - Pompe avec organe tubulaire - Google Patents

Pompe avec organe tubulaire Download PDF

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Publication number
EP0322594A1
EP0322594A1 EP88120116A EP88120116A EP0322594A1 EP 0322594 A1 EP0322594 A1 EP 0322594A1 EP 88120116 A EP88120116 A EP 88120116A EP 88120116 A EP88120116 A EP 88120116A EP 0322594 A1 EP0322594 A1 EP 0322594A1
Authority
EP
European Patent Office
Prior art keywords
squeezing
hose
plate
peristaltic pump
pump according
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
EP88120116A
Other languages
German (de)
English (en)
Other versions
EP0322594B1 (fr
Inventor
Wolfgang Suttner
Walter Olbrisch
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.)
Suttner GmbH and Co KG
Original Assignee
Suttner GmbH and Co KG
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 Suttner GmbH and Co KG filed Critical Suttner GmbH and Co KG
Priority to AT88120116T priority Critical patent/ATE52310T1/de
Publication of EP0322594A1 publication Critical patent/EP0322594A1/fr
Application granted granted Critical
Publication of EP0322594B1 publication Critical patent/EP0322594B1/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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/09—Pumps having electric drive

Definitions

  • the invention relates to a peristaltic pump according to the preamble of claim 1.
  • Peristaltic pumps are used for dosing devices in water treatment plants, as laboratory pumps for pumping small quantities of a medium to be pumped, but also for dosing purposes in the medical field. In some cases, the peristaltic pumps are also operated quasi-continuously, ie used as pure feed pumps.
  • the medium to be pumped is usually a liquid, for example water mixed with chemicals in a water treatment plant, a chemical solution, etc.
  • the known peristaltic pump from which the invention proceeds (LUEGER “LEXIKON DER TECHNIK”, Volume 7, “LEXICON OF ENERGY TECHNOLOGY AND POWER MACHINES”, DVA, Stuttgart, 1965, page 264) has a pump body with a circular interior, the inner wall of an abutment wall represents a hose. The hose is guided from an inlet in a circular arc to an outlet of the pump body. Centrally located in the pump body is the output shaft of a rotary drive, usually an electric motor, on which a rotating disc sits.
  • peristaltic pumps are known with two, three or even four rotating rollers.
  • the pumping action is achieved by an eccentrically mounted rolling piston which rolls in the interior of the pump body and thereby presses a ring of elastic material against the abutment wall.
  • the drive is necessarily a rotary drive, so usually an electric motor.
  • the delivery rate of the known peristaltic pumps must be adjustable, in particular if they are used in metering devices. This requires an adjustability of the rotational speed of the driving electric motor. This in turn requires a relatively expensive control electronics. Overall, the known peristaltic pumps are relatively expensive on the one hand because of the need for an electric motor as a drive, on the other hand because of the need for electronic speed control.
  • the invention has for its object to simplify the known peristaltic pump design so that it is considerably cheaper than the previously known peristaltic pumps.
  • Essential for the teaching of the invention is the recognition that a simple kinking of the hose leads to about 180 ° to a reliable under normal pressure conditions squeezing and thus blocking of the hose. It is also important to realize that such a kinking achieved by kinking can be overcome with increasing fluid pressure in the tube, so that such a pinch has a valve function. Of course, this effect has long been known as such, but it is now used selectively here in a peristaltic pump to eliminate the previously required circumferential crimping elements.
  • a stationary second crimping element is arranged upstream, which closes so that it guarantees the necessary to build up the required fluid pressure in the area between the abutment wall and pinch plate termination of the hose.
  • the squeezing of the hose required for the promotion is no longer achieved by the rotating peripheral crimping elements, but by the static crimping plate.
  • the promotion of the liquid through the tube on the first squeezing past is possible because of the pressure increase in the area between the abutment wall and crush plate of the hose at the bend is slightly inflated and releases a liquid passage. Since upon reaching the second pumping position, the pressure in the hose between the abutment wall and the squeezing plate immediately decreases, the valve formed by the bend on the first squeezing element closes immediately again.
  • the tube Upon renewed removal of the crush plate from the abutment wall and return to the first pumping position, the tube is relieved and expands after opening the second crimping element under its residual stress and / or under the pressure of the liquid at the inlet of the tube and fills with liquid. Thereafter, the pump cycle can then run again.
  • the hose pump according to the invention is much cheaper to produce than known peristaltic pumps.
  • a drive with a linear drive movement is much more cost-effective than a rotary drive, especially when the drive is designed as an actuating magnet.
  • the drive frequency when using a Operating magnet so the game frequency of the actuating magnet
  • the flow rate of the hose pump according to the invention can be controlled very easily.
  • an AC oscillating magnet can be used, for example, with the power frequency as the game frequency, so that then the hose pump according to the invention can be used as a quasi-continuous pump.
  • the flow rate of the hose pump according to the invention can be very accurately set to low values, so that it can be used as a very accurate metering pump.
  • a hose pump according to the invention shown in the figures of the drawing is intended and suitable in particular for metering devices in water treatment plants.
  • a peristaltic pump could also be used for medical applications, for example as Infusionsdosierpumpe, with a correspondingly high drive frequency, this peristaltic pump could also be used as a quasi-continuous pump with considerable capacity.
  • the hose pump shown initially has a pump body 1 and a closed guided by the pump body 1 hose 2.
  • the tube 2 abuts against an abutment wall 3 of the pump body 1 and guides the medium to be pumped in a closed passage; in particular, this medium will be a liquid, for example mixed with water.
  • At least two places squeezing the squeezing elements 4, 5 are provided the hose 2.
  • the squeezing elements 4, 5 are driven or moved by a drive 6.
  • By opening and closing the squeezing elements 4, 5 in a specific sequence a certain volume of the medium to be pumped, in particular therefore of the liquid, can be conveyed through the hose, ie from the inlet 7 to the outlet 8.
  • the tube 2 is substantially stationary between the abutment wall 3 and a pinch plate 9 and a as first crimping element 4 serving end of the crimping plate 9 bent around with a bend of about 180 ° sharp and thereby squeezed.
  • the first pinch point is thus realized by this bend at the end of the pinch plate 9.
  • the second squeezing element 5 of the abutment wall 3 is arranged opposite.
  • the Quetschplatte 9 and arranged thereon second squeeze element 5 are by the drive 6 between a first pumping position I, shown in Fig. 1, with a greater distance from the abutment wall 3 and a second pumping position II, shown in Fig. 2, with a small distance from the abutment wall 3 movable back and forth.
  • This reciprocating movement in contrast to the rotational movement of the squeezing elements realized in the prior art, is referred to below as the pumping movement.
  • the tube 2 In the first pumping position I, the tube 2 is essentially relaxed, ie it has its normal volume in the area between abutment wall 3 and pinch plate 9.
  • the second squeezing element 5 does not squeeze the tube 2 in the pumping position I, so that liquid can enter from the inlet 7 into the area between the abutment wall 3 and the squeeze plate 9.
  • the second squeezing element 5 On the way from the first pumping position I to the second pumping position II, the second squeezing element 5 initially squeezes the tube 2, so that liquid located in the area between the abutment wall 3 and the squeeze plate 9 can not flow back to the inlet 7. Thereafter, so in the further course of the movement in the direction of the second pumping position II then squeezes the pinch plate 9, the hose 2 against the abutment wall 3.
  • the liquid pressure generated in the hose 2 between the abutment wall 3 and pinch plate 9 is sufficient to open the hose 2 at the bend a little and squeeze the liquid here.
  • the liquid therefore exits completely from the region of the hose 2 between the abutment wall 3 and the crushing plate 9 until it reaches the pumping position II into the region of the hose 2 beyond the first crimping element 4.
  • FIGS. 1 and 2 clearly show, by comparison, how a liquid bead moves through the hose 2 between the pump positions I and II.
  • the first squeezing element 4 a third squeezing element 10 is arranged downstream and the third squeezing 10, in cooperation with an abutment 11, squeezes the hose 2 in the first pumping position I and in the second pumping position II the hose 2 does not squeeze.
  • This third squeezing element 10 in conjunction with the abutment 11 serves additional security.
  • the squeeze elements 5 and 10 are in the illustrated embodiment, moreover, designed as a simple pinch edges, for example on a correspondingly bent metal strip, the abutment 11 is a plate, also designed as a stable metal strip. Other embodiments are of course conceivable. In any case, make sure that the hose 2 is not damaged by the squeezing even in continuous operation.
  • the pumping movement of the squeezing plate and the second squeezing element can be a linear movement.
  • the pumping movement is a pivotal movement.
  • the pivoting movement in the embodiment shown here has the advantage that the second squeezing 5 without special additional measures only by its geometric arrangement in the direction of movement "before" the squeeze plate 9 and closer to the pivot axis squeezing the tube 2 performs earlier than the squeeze plate 9.
  • the second Squeezing element 5 is thus opposite the crush plate 9 in the direction of the abutment wall 3.
  • a drive 6 can be used with a linear drive movement.
  • a drive which causes a rotating drive movement, since of course from a rotating drive movement at any time via a crank drive, a linear drive movement can be generated.
  • a linear drive movement has considerable advantages in terms of cost for the construction of a drive 6 under certain circumstances.
  • the drive 6 is designed as an actuating magnet 12, as is the case in the embodiment shown here.
  • An actuating magnet consists of a magnetic body 13 and an armature 14, via which the mechanical force effect of an electromagnetic field is utilized for the exercise of a specific longitudinal or rotational movement.
  • Main types of actuating magnets are lifting magnets, rotary magnets and oscillating magnets.
  • DC-driven and AC-driven actuating magnet which differ in terms of mechanical structure and in the switching times.
  • the drive frequency of the drive 6 is referred to as a play frequency when operating as an actuating magnet 12 (LUEGER “LEXIKON DER TECHNIK", Volume 13, “LEXICON OF THE FEINWERKTECHNIK", page 86, 87).
  • the actuating magnet 12 is designed as a solenoid, which is a particularly inexpensive and optimal in terms of force effect solution.
  • the crush plate 9 and the second squeezing element 5 are attached to the armature 14 of the actuating magnet 12.
  • the armature 14 could perform a linear movement, however, in the embodiment shown here, the armature 14 performs a pivoting movement.
  • the armature 14 of the actuating magnet 12 is executed like a cantilever and is pivotally mounted about a pivot axis 16 laterally on the magnetic body 13. This can be seen particularly clearly from the rear view in FIG. 3.
  • a special guidance of the hose 2 takes place in the region of the first squeezing element 4, namely in that it is close to the squeezing plate 9 the first crimping element 4 forming end at the edge and / or on the side facing away from the abutment wall 3 side, a hose guide 17 is mounted and the hose 2 is passed between the hose guide 17 and the pinch plate 9.
  • 1 and 2 of the drawing show, moreover, that in the region of the pump body 1 lying there on the left a further hose guide 18 is provided for the hose 2, so that it can not slip laterally out of the overall arrangement.
  • the drawing shows a hose pump according to the invention, which is extremely simple in construction, in particular no more rotary drive needed, but does not require a simple actuating magnet as a drive and is therefore extremely inexpensive.
  • the costs here are reduced by 60 to 80%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP88120116A 1987-12-05 1988-12-02 Pompe avec organe tubulaire Expired - Lifetime EP0322594B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88120116T ATE52310T1 (de) 1987-12-05 1988-12-02 Schlauchpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873741262 DE3741262A1 (de) 1987-12-05 1987-12-05 Schlauchpumpe
DE3741262 1987-12-05

Publications (2)

Publication Number Publication Date
EP0322594A1 true EP0322594A1 (fr) 1989-07-05
EP0322594B1 EP0322594B1 (fr) 1990-04-25

Family

ID=6341951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120116A Expired - Lifetime EP0322594B1 (fr) 1987-12-05 1988-12-02 Pompe avec organe tubulaire

Country Status (4)

Country Link
US (1) US4948350A (fr)
EP (1) EP0322594B1 (fr)
AT (1) ATE52310T1 (fr)
DE (2) DE3741262A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741262A1 (de) * 1987-12-05 1989-06-22 Suttner Gmbh & Co Kg Schlauchpumpe
US20060280633A1 (en) * 2003-08-24 2006-12-14 Seiko Epson Corporation Tube pummp
US7481337B2 (en) * 2004-04-26 2009-01-27 Georgia Tech Research Corporation Apparatus for fluid storage and delivery at a substantially constant pressure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171360A (en) * 1962-03-09 1965-03-02 Walton William Melin Pulsation type pumps
DE2430450A1 (de) * 1974-06-25 1976-01-22 Mueller Robert Kg Einem reaktionsgefaess, einer mischoder verarbeitungsmaschine o.dgl. zugeordnetes dosiergeraet fuer einen fluessigen oder pastenfoermigen zuschlagstoff
GB2020735A (en) * 1978-05-10 1979-11-21 Fresenius Chem Pharm Ind Hose pump having a high dosing accuracy

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816514A (en) * 1954-09-17 1957-12-17 Designers For Industry Inc Vibratory pump
US3182602A (en) * 1963-09-16 1965-05-11 William B Price Method of and apparatus for pumping
US3170360A (en) * 1963-10-21 1965-02-23 Miettinen Toivo Musical clapping instruments
DE1240741B (de) * 1964-01-30 1967-05-18 Fuchs Martin Metallwaren Schlauchpumpe, insbesondere fuer Spielzeuge
US3418940A (en) * 1966-11-18 1968-12-31 Union Carbide Corp Fluid material transfer apparatus
US3518033A (en) * 1969-08-22 1970-06-30 Robert M Anderson Extracorporeal heart
US4015914A (en) * 1972-05-18 1977-04-05 Delta Scientific Corporation Metering pump wherein tubular pump is responsive to force impulses
US3778195A (en) * 1972-07-20 1973-12-11 G Bamberg Pump for parenteral injections and the like
FI70473C (fi) * 1978-06-23 1986-09-19 Inst Biologicheskoi Fiz Peristaltisk doserare och medelst denna foerverkligat doseringssystem
JPS587253A (ja) * 1981-07-04 1983-01-17 テルモ株式会社 薬液注入装置
JPS5993979A (ja) * 1982-11-18 1984-05-30 Sharp Corp チユ−ブ型定量ポンプ
US4501405A (en) * 1983-06-21 1985-02-26 Bunnell Life Systems, Inc. Frictionless valve/pump
JPS6043188A (ja) * 1983-08-19 1985-03-07 Hitachi Ltd 液体吐出装置
DE3741262A1 (de) * 1987-12-05 1989-06-22 Suttner Gmbh & Co Kg Schlauchpumpe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171360A (en) * 1962-03-09 1965-03-02 Walton William Melin Pulsation type pumps
DE2430450A1 (de) * 1974-06-25 1976-01-22 Mueller Robert Kg Einem reaktionsgefaess, einer mischoder verarbeitungsmaschine o.dgl. zugeordnetes dosiergeraet fuer einen fluessigen oder pastenfoermigen zuschlagstoff
GB2020735A (en) * 1978-05-10 1979-11-21 Fresenius Chem Pharm Ind Hose pump having a high dosing accuracy

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 172 (M-397)[1895], 17. Juli 1985; & JP-A-60 043188 (HITACHI SEISAKUSHO K.K.) 07-03-1985 *

Also Published As

Publication number Publication date
EP0322594B1 (fr) 1990-04-25
DE3741262A1 (de) 1989-06-22
DE3741262C2 (fr) 1989-09-21
US4948350A (en) 1990-08-14
ATE52310T1 (de) 1990-05-15
DE3860107D1 (de) 1990-05-31

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