EP0852673A1 - Rotationsverdrängerpumpe - Google Patents
RotationsverdrängerpumpeInfo
- Publication number
- EP0852673A1 EP0852673A1 EP97925979A EP97925979A EP0852673A1 EP 0852673 A1 EP0852673 A1 EP 0852673A1 EP 97925979 A EP97925979 A EP 97925979A EP 97925979 A EP97925979 A EP 97925979A EP 0852673 A1 EP0852673 A1 EP 0852673A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base plate
- clamping plate
- ring
- membrane
- annular surface
- 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
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 33
- 239000004033 plastic Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims 1
- 239000010985 leather Substances 0.000 claims 1
- 239000011093 chipboard Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920006260 polyaryletherketone Polymers 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
Definitions
- the invention relates to a pump with the features specified in the preamble of claim 1.
- a pump is known from DE-295 11 966 U.
- the known pump has a stationary arrangement of a base plate and two clamping plates, between which the base plate is clamped.
- In the surface of the base plate there is an annular surface which extends over a partial circle or a full circle and is covered by a membrane which is tightly clamped to the base plate at its edges by means of the one chipboard.
- a pump channel is formed between the membrane and the annular surface of the base plate, into which an inlet and an outlet open through the base plate. The pump channel connects the inlet and the outlet on the longer path, whereas the shorter path between the inlet and outlet is blocked.
- a rotor Coaxial to the ring surface, a rotor is arranged above the membrane, which has several rollers, which act on the membrane by means of axially displaceable pressure transmission elements, which are arranged in a ring-shaped manner above the membrane, and press them locally against the ring surface, as a result of which the Membrane interrupts the path from the inlet to the outlet at circumferential points and thus ensures the desired pumping effect.
- the stroke of the pressure transmission elements can be adjusted by means of an adjusting ring which is arranged above the one clamping plate in the vicinity of the rollers; this also adjusts the pump output.
- the tensioning plate which is arranged on the side of the base plate facing away from the membrane, is ring-shaped and is screwed to the opposite tensioning plate by means of a plurality of screws arranged on its circumference, whereby the edge of the membrane is firmly clamped at the same time.
- a threaded rod Coaxial to the rotor shaft, a threaded rod extends outwards through the circular opening of the annular clamping plate, onto which an adjusting nut is screwed, which allows the pressure with which the rollers act on the membrane to be adjusted by spring force.
- the pump delivery pressure can be changed by turning the adjusting nut.
- the membrane and the base plate which together delimit the pump channel, are - in particular with abrasive media such as Mortar - wear parts that need to be replaced from time to time.
- abrasive media such as Mortar - wear parts that need to be replaced from time to time.
- the screws with which the clamping plates are screwed together and the adjusting nut must be removed in the known pump.
- the base plate and membrane can then be removed and replaced as required.
- the present invention has for its object to simplify the handling and maintenance of the pump.
- the pump on the side that is particularly at risk of contamination is hermetically sealed and the penetration of dirt or aggressive pump fluid into the pump drive is no longer possible, even if the pump is used to replace the membrane and / or the base plate is opened. Since the center of the outer clamping plate is no longer required for passing a threaded bolt in the direction of the axis of the rotor, the outer clamping plate can now be connected to the opposite inner clamping plate by means of a single screw connection. This makes replacing the wearing parts child's play.
- the pump has a stator 1 and a rotor 2.
- the stator is part of the housing of the pump and has an outer clamping plate 24, an inner clamping plate 6, a base plate 3 and a membrane 11.
- the base plate 3 is ring-shaped and arranged coaxially to the axis 4 of the rotor.
- the base plate 3 has a flat ring surface 5, which is delimited by two conical clamping surfaces 9 and 10, which, as seen from the rotor 2, lie behind the ring surface 5: opposite them are two further clamping surfaces 7 and 8, which are on the inner clamping plate 6 are formed and cooperate with the clamping surfaces 9 and 10 in order to clamp between them the membrane 11, which consists of an elastomeric material, is a ring-shaped, flat structure in a relaxed, non-installed state and is clamped between the conical ones Clamping surfaces 7 to 10 is bent so that it arches over the flat ring surface 5.
- a pump channel 12 is formed between the curved and thus elastically prestressed membrane 11 and the annular surface 5, into which an inlet 13 and an outlet 15 open, which is expediently located close to the inlet 13 and only to represent it can - is provided in the drawing in a diagonal arrangement.
- the pump channel 12 is blocked on the short path from the inlet 13 to the outlet 15 by an elevation (not shown here) on the annular base plate 3.
- a ring of plungers 14 is arranged, which serve as pressure transmission members.
- the tappets are T-shaped in longitudinal section, extend parallel to the axis 4 and are arranged along the entire pump channel 12, which connects the inlet 13 to the outlet 15, but not over that section of the membrane 11 which rotates the rotor 2 leads from the outlet 15 to the inlet 13 because there the pump channel 12 is interrupted by the elevation provided on the ring-shaped base plate 3.
- the plungers 14 are arranged displaceably in the clamping plate 6 parallel to the axis 4 and secured by an adjusting ring 17 which can be displaced against the restoring force of the diaphragm 11 in the direction of the axis 4 by means of an eccentric 19, so that the plunger has a variable end stop have, which makes it possible to reduce the maximum cross section of the pump channel 12 and thus to adjust the pump output.
- the rotor 2 rotates around a shaft 20 which is mounted in a roller bearing 26 in the clamping plate 6 and in a further roller bearing 27 in the rear housing part.
- the rotor has at least two free-running rollers 21, which roll over the plungers 14 and press them down, as a result of which the membrane 11 is pressed locally onto the annular surface 5. This local pressure point travels along the pump channel 12 with the rotor movement, pushes the amount of liquid in front of it through the outlet 15 and at the same time sucks in further liquid through the inlet 13.
- the delivery pressure of the pump depends on the preload of the membrane 11. This preload depends on the material and the thickness of the membrane. but also the extent of their bend. In addition, the delivery pressure depends on the force. with which the plunger 14 act on the membrane 11. It can be changed by means of a second eccentric 22, which acts on the collar 20 on the shaft 20 via the rear roller bearing 27 and thereby more or less tensions a spring 29 which bears on the axially displaceable carrier 30 of the rollers 21 . By turning the eccentric 22, for example by means of a handwheel attached to the outside, the force with which the rollers 21 act on the membrane 11 can be increased or decreased.
- the tappets 14 can deflect the pressure insofar as the pressure force exceeds the restoring force of the spring 29 which can be varied by turning the eccentric 22.
- the membrane 11 is braced by means of a threaded bolt 31 which is screwed into the clamping plate 6, extends through the outer clamping plate 24 and carries a nut 32 which, when tightened, the outer clamping plate 24 against the base plate 3 and thus the Base plate 3 prints against the edge of the membrane 11.
- the membrane 11 and the base plate 3 are clamped and at the same time the pump channel 12 is sealed. If the membrane 11 and / or the base plate 3 have to be replaced in the event of wear, only the nut 32 has to be loosened.
- the outer clamping plate 24 can be removed and the base plate 3 and the membrane 11 are freely accessible.
- the wear primarily occurs on the hard base plate 3 and, as a result of the abrasion from the base plate 3, manifests itself in an enlargement of the pump channel, which in turn leads to a reduction in the delivery pressure. When the delivery pressure drops, you can easily see when an exchange is required.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Details Of Reciprocating Pumps (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Display Devices Of Pinball Game Machines (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29609865U | 1996-06-04 | ||
DE29609865U DE29609865U1 (de) | 1996-06-04 | 1996-06-04 | Rotationsverdrängerpumpe |
PCT/EP1997/002871 WO1997046808A1 (de) | 1996-06-04 | 1997-06-04 | Rotationsverdrängerpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0852673A1 true EP0852673A1 (de) | 1998-07-15 |
EP0852673B1 EP0852673B1 (de) | 2004-04-07 |
Family
ID=8024765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97925979A Expired - Lifetime EP0852673B1 (de) | 1996-06-04 | 1997-06-04 | Rotationsverdrängerpumpe |
Country Status (9)
Country | Link |
---|---|
US (1) | US6030190A (de) |
EP (1) | EP0852673B1 (de) |
AT (1) | ATE263924T1 (de) |
CZ (1) | CZ288831B6 (de) |
DE (3) | DE29609865U1 (de) |
DK (1) | DK0852673T3 (de) |
HU (1) | HUP9901585A3 (de) |
PL (1) | PL183138B1 (de) |
WO (1) | WO1997046808A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19713689C2 (de) * | 1997-04-03 | 1999-09-09 | Inotec Gmbh | Rotationsverdrängerpumpe |
DE29705877U1 (de) * | 1997-04-03 | 1998-02-19 | INOTEC GmbH Transport- und Fördersysteme, 79761 Waldshut-Tiengen | Rotationsverdrängerpumpe |
DE29706606U1 (de) | 1997-04-12 | 1997-08-21 | Kammerer, Rolf, 75196 Remchingen | Rotationsverdrängerpumpe |
DE19717452A1 (de) * | 1997-04-25 | 1998-10-29 | Inotec Gmbh | Rotationsverdrängerpumpe |
DE29707480U1 (de) | 1997-04-25 | 1997-07-17 | Kammerer, Rolf, 75196 Remchingen | Rotationsverdrängerpumpe |
US6736617B2 (en) * | 2002-02-20 | 2004-05-18 | Terumo Cardiovascular Systems Corporation | Peristaltic pump having automatically adjusting bushing |
GB2412698A (en) * | 2004-04-01 | 2005-10-05 | Boc Group Plc | Peristaltic pump |
JP3750689B1 (ja) * | 2005-02-04 | 2006-03-01 | セイコーエプソン株式会社 | 流体輸送装置及び流体輸送器 |
US8303275B2 (en) * | 2006-12-07 | 2012-11-06 | Seiko Epson Corporation | Micropump, tube unit, and control unit |
JP5298699B2 (ja) | 2008-08-20 | 2013-09-25 | セイコーエプソン株式会社 | 制御ユニット、チューブユニット、マイクロポンプ |
JP5282508B2 (ja) * | 2008-09-29 | 2013-09-04 | セイコーエプソン株式会社 | 制御ユニット、チューブユニット、マイクロポンプ |
JP5195368B2 (ja) | 2008-12-05 | 2013-05-08 | セイコーエプソン株式会社 | チューブユニット、制御ユニット、マイクロポンプ |
JP5982855B2 (ja) * | 2012-02-17 | 2016-08-31 | セイコーエプソン株式会社 | 流体輸送装置、交換ユニット、及び交換ユニットの製造方法 |
DE102017116398A1 (de) * | 2017-07-20 | 2019-01-24 | B. Braun Melsungen Ag | Volumetrische Pumpe |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE110412C (de) * | ||||
FR1119960A (fr) * | 1955-03-02 | 1956-06-27 | Le Controle Des Fluides | Pompe spéciale pour l'obtention de hautes pressions |
US3058428A (en) * | 1960-07-20 | 1962-10-16 | Gemeinhardt William | Pump |
DE1528971A1 (de) * | 1966-05-05 | 1969-07-17 | Beck Kg Walter | Ventillose Verdraengungspumpe |
DE3071630D1 (en) * | 1979-09-27 | 1986-07-10 | Hemocare | Peristaltic pump |
US4392794A (en) * | 1980-12-29 | 1983-07-12 | Arthur Foxcroft | Peristaltic pump |
SE8100044L (sv) * | 1981-01-07 | 1982-07-08 | Vitrum Ab | Pump |
US4522571A (en) * | 1984-03-05 | 1985-06-11 | Little Robert K | Peristaltic pump |
US4586882A (en) * | 1984-12-06 | 1986-05-06 | Baxter Travenol Laboratories, Inc. | Tubing occluder pump |
DD272036A1 (de) * | 1988-05-09 | 1989-09-27 | Karl Marx Stadt Tech Hochschul | Radialperistaltikschlauchpumpe |
DE29511966U1 (de) * | 1994-09-17 | 1995-09-28 | Kammerer, Rolf, 75196 Remchingen | Rotationsverdrängerpumpe |
-
1996
- 1996-06-04 DE DE29609865U patent/DE29609865U1/de not_active Expired - Lifetime
-
1997
- 1997-06-04 AT AT97925979T patent/ATE263924T1/de active
- 1997-06-04 PL PL97324694A patent/PL183138B1/pl not_active IP Right Cessation
- 1997-06-04 HU HU9901585A patent/HUP9901585A3/hu unknown
- 1997-06-04 DE DE19723303A patent/DE19723303A1/de not_active Withdrawn
- 1997-06-04 DE DE59711494T patent/DE59711494D1/de not_active Expired - Lifetime
- 1997-06-04 DK DK97925979T patent/DK0852673T3/da active
- 1997-06-04 CZ CZ1998189A patent/CZ288831B6/cs not_active IP Right Cessation
- 1997-06-04 EP EP97925979A patent/EP0852673B1/de not_active Expired - Lifetime
- 1997-06-04 WO PCT/EP1997/002871 patent/WO1997046808A1/de active IP Right Grant
- 1997-06-04 US US09/011,499 patent/US6030190A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9746808A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE263924T1 (de) | 2004-04-15 |
CZ288831B6 (cs) | 2001-09-12 |
CZ18998A3 (cs) | 2000-09-13 |
PL183138B1 (pl) | 2002-05-31 |
HUP9901585A3 (en) | 2000-02-28 |
DE59711494D1 (de) | 2004-05-13 |
WO1997046808A1 (de) | 1997-12-11 |
PL324694A1 (en) | 1998-06-08 |
DK0852673T3 (da) | 2004-08-09 |
US6030190A (en) | 2000-02-29 |
HUP9901585A2 (hu) | 1999-08-30 |
EP0852673B1 (de) | 2004-04-07 |
DE29609865U1 (de) | 1996-10-24 |
DE19723303A1 (de) | 1998-02-12 |
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