EP1538335B1 - Schlauchpumpe mit Vorrichtung zur Vakuumerzeugung - Google Patents

Schlauchpumpe mit Vorrichtung zur Vakuumerzeugung Download PDF

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Publication number
EP1538335B1
EP1538335B1 EP04026512A EP04026512A EP1538335B1 EP 1538335 B1 EP1538335 B1 EP 1538335B1 EP 04026512 A EP04026512 A EP 04026512A EP 04026512 A EP04026512 A EP 04026512A EP 1538335 B1 EP1538335 B1 EP 1538335B1
Authority
EP
European Patent Office
Prior art keywords
pump
membrane
hose
rotor
housing
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.)
Expired - Fee Related
Application number
EP04026512A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1538335A2 (de
EP1538335A3 (de
Inventor
Jürgen Dr. Timmler
Tomas Kleiner
Karsten Wagener
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.)
Crane Process Flow Technologies GmbH
Crane Process Flow Technologies Ltd
Original Assignee
Crane Process Flow Technologies GmbH
Crane Process Flow Technologies Ltd
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 Crane Process Flow Technologies GmbH, Crane Process Flow Technologies Ltd filed Critical Crane Process Flow Technologies GmbH
Publication of EP1538335A2 publication Critical patent/EP1538335A2/de
Publication of EP1538335A3 publication Critical patent/EP1538335A3/de
Application granted granted Critical
Publication of EP1538335B1 publication Critical patent/EP1538335B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • 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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms

Definitions

  • the present invention relates to a peristaltic pump having the features of the preamble of claim 1.
  • Peristaltic pumps are generally pumps with a pump housing in which a tube rests annularly along the inside of a housing wall.
  • a rotor is provided in the interior of the pump housing, which causes peristaltic conveyance of the hose contents from a suction side to a pressure side by circumscribing the hose along the inner wall.
  • a negative pressure below the ambient pressure can only be generated if the hose develops its own restoring force within the pump housing. This restoring force can be supported if a vacuum is built up in the pump housing.
  • WO-A-98 42401 discloses a peristaltic pump configured to establish a vacuum outside the pump tube in the pumping chamber. For this purpose, it is proposed to provide a separate vacuum pump with its own drive or arranged in the motor housing of the peristaltic pump and directly driven by the motor vacuum pump.
  • the means for generating the vacuum comprise a diaphragm pump operable by the rotor and arranged in the pump chamber
  • the assembly required for vacuum generation could comprise few components. If the diaphragm pump is located on the inside of a side wall, it can be removed with the side wall for maintenance purposes. In addition, the membrane is subjected to the negative pressure in the housing, so that the restoring force and thus the suction power of the diaphragm pump is increased.
  • the diaphragm pump has a diaphragm and a wear part carried by the diaphragm, wherein the wear part is intermittently acted upon by a slider connected to the rotor during operation, this wear part can be exchanged in a simple manner, without having to change other components.
  • the interior of the membrane pump is suitably limited on the one hand by the membrane and on the other hand by the side wall.
  • the interior of the diaphragm pump can be connected to the pump chamber via a suction line and via a pressure line to the atmosphere.
  • the suction line and the pressure line are suitably associated with the check valves.
  • the check valves are conveniently located outside the pump chamber for easy maintenance.
  • a hose pump according to the invention is shown in an end view along the axis of rotation of the (not visible here) rotor.
  • the hose pump comprises a base 1, on which a pump housing 2 is arranged.
  • the pump housing 2 in turn has an approximately circular cross section and is frontally bounded by a removable side wall 3.
  • the side wall 3 carries a suction line 4 and a pressure line 5 for an internal diaphragm pump.
  • the annular pump housing located behind the side wall 3 further carries a suction nozzle 6 and a discharge nozzle 7 for connection to external lines.
  • the side wall 3 is gas-tightly screwed to the annular pump housing and provided on its outside for stiffening with ribs 8.
  • FIG. 2 shows the in FIG. 1 shown hose pump in a plan view. Same components bear the same reference numbers.
  • the annular pump housing 2 can be seen that on its side wall 3 opposite side surface 10 carries a gear 11 and an electric motor 12.
  • a section III the housing 3 is shown partially cut.
  • a rotatable about the axis of rotation 13 rotor 14 is illustrated, which carries a slider 15.
  • the side wall 3 carries on its inner side 16 a diaphragm pump 17.
  • the diaphragm pump 17 is connected via a through-bore 18 to the suction line 4 and via a through-bore 19 to the pressure line 5.
  • the suction line 4 and the pressure line 5 in turn each carry a check valve 20 and 21st
  • the section III is in the FIG. 3 shown enlarged.
  • FIG. 4 shows the clipping according to FIG. 3 in a further enlarged and simplified representation.
  • the diaphragm pump 17 has an approximately annular or dome-shaped membrane 30 made of a rubber-elastic material.
  • the membrane 30 is mounted in an annular holder 31 and screwed to the side wall 3.
  • the membrane 30 defines an interior 32 which communicates with the through-holes 18 and 19.
  • the membrane 30 On its outer side facing away from the interior 32, the membrane 30 carries a wear plate 33, which essentially covers the membrane 30 in the direction of the rotor 14 (not illustrated here).
  • the wear plate 33 is drawn circumferentially.
  • the membrane 30 may be made of an elastomer.
  • the rotor 14 may also be made of aluminum be made while the slider 15 is to be designed wear-resistant, for example made of steel.
  • a vacuum-resistant suction hose for the medium to be delivered is connected.
  • a hose extends from the suction nozzle 6 along the circumference of the housing 3 on the inside thereof to the discharge nozzle 7.
  • a delivery hose for the medium to be delivered is also connected.
  • the rotor 14 in the interior of the pump housing 3 is approximately bar-shaped and presses the tube located inside the pump to the annular inner side of the housing 2, so that upon rotation of the rotor located in the tube segment in front of the rotor medium pressed through the hose and is conveyed to the discharge nozzle 7. Behind the rotor 14, during operation, the hose located inside the pump will be endeavored by its own elasticity to expand again.
  • the resulting negative pressure at the suction nozzle 6 can initially only be as large as the return force of the pump hose allows it.
  • the diaphragm pump 17 is provided on the inside of the side wall 3. This is acted upon by the slider with an outwardly acting force during each revolution of the pump rotor, namely, when the slider 15 moves with the orbital movement of the rotor 14 past the diaphragm pump 17. At this moment, the slider 15 hits the wear plate 33 and presses the wear plate 33 and thus also the diaphragm 30 on the side wall 3 too.
  • the interior 32 is reduced in size. The gas contained in the interior 32 can not escape through the suction line 4 because of the check valve 20, but is forced into the pressure line 5 and through the check valve 21 into the atmosphere.
  • the suction line 4 is now connected with its end facing away from the through hole 18 with the pump housing 2 such that the line 4 is in communication with the interior of the hose pump in which the pump hose is located.
  • Each actuation of the diaphragm pump 17 thus conveys a part of the gas located in the interior of the pump housing 2 to the outside into the atmosphere, so that with time a negative pressure in the pump housing 2 is formed. This negative pressure in turn is desirable to assist the pump hose in its return movement.
  • the return force of the diaphragm 30, which is essential for the achievable between the intake manifold 4 and the pressure line 5 pressure difference is thus supported by the described arrangement.
  • a major advantage of the arrangement described so far is the ease of maintenance. Since the slider 15 is designed with respect to the wear plate 33 as a wear-resistant component, a maintenance of the diaphragm pump 17 may be limited to replace the retaining ring 31, the membrane 30 and the wear part 33 with removed side wall 3. These components are relatively easy and inexpensive to manufacture. Optionally, it is also sufficient to change only the membrane 30 and the wear part 33. Maintenance work on the rotor 14 or the slider 15 are generally not required.
  • the present invention is a peristaltic pump with a very simple and reliable device for generating a low internal pressure in the pump housing. 2
EP04026512A 2003-12-05 2004-11-09 Schlauchpumpe mit Vorrichtung zur Vakuumerzeugung Expired - Fee Related EP1538335B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357320A DE10357320A1 (de) 2003-12-05 2003-12-05 Schlauchpumpe mit Vorrichtung zur Vakuumerzeugung
DE10357320 2003-12-05

Publications (3)

Publication Number Publication Date
EP1538335A2 EP1538335A2 (de) 2005-06-08
EP1538335A3 EP1538335A3 (de) 2006-01-11
EP1538335B1 true EP1538335B1 (de) 2008-09-03

Family

ID=34442501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04026512A Expired - Fee Related EP1538335B1 (de) 2003-12-05 2004-11-09 Schlauchpumpe mit Vorrichtung zur Vakuumerzeugung

Country Status (4)

Country Link
EP (1) EP1538335B1 (es)
AT (1) ATE407293T1 (es)
DE (1) DE10357320A1 (es)
ES (1) ES2312903T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110735782B (zh) * 2019-07-22 2021-04-16 六安永贞匠道机电科技有限公司 一种隔膜泵的柔性气动驱动方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL56975A (en) * 1979-03-29 1982-09-30 Ramot Plastics Diaphragm pump
DE3703124A1 (de) * 1987-02-03 1988-08-11 Manfred Streicher Schlauchpumpe
US5281112A (en) * 1992-02-25 1994-01-25 The Regents Of The University Of Michigan Self regulating blood pump with controlled suction
DE4303319A1 (de) * 1993-02-05 1994-08-11 Putzmeister Maschf Vakuum-Pumpeinrichtung
AU6582598A (en) * 1997-03-24 1998-10-20 Michael Goldberg Vacuum assisted peristaltic pumping
DE19940498A1 (de) * 1999-08-26 2001-03-22 Knf Neuberger Gmbh Membranpumpe

Also Published As

Publication number Publication date
DE10357320A1 (de) 2005-06-30
EP1538335A2 (de) 2005-06-08
ES2312903T3 (es) 2009-03-01
ATE407293T1 (de) 2008-09-15
EP1538335A3 (de) 2006-01-11

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