EP0874157B1 - Rotationsverdrängerpumpe - Google Patents
Rotationsverdrängerpumpe Download PDFInfo
- Publication number
- EP0874157B1 EP0874157B1 EP98107092A EP98107092A EP0874157B1 EP 0874157 B1 EP0874157 B1 EP 0874157B1 EP 98107092 A EP98107092 A EP 98107092A EP 98107092 A EP98107092 A EP 98107092A EP 0874157 B1 EP0874157 B1 EP 0874157B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base plate
- membrane
- ring surface
- displacement pump
- 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.)
- Expired - Lifetime
Links
Images
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
- F04B43/1269—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 the rotary axes of the rollers lying in a plane perpendicular to the rotary axis of the driving motor
-
- 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
- F04B43/021—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms the plate-like flexible member is pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the plane of the plate-like flexible member and each having its own driving mechanism
-
- 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
- F04B43/14—Machines, pumps, or pumping installations having flexible working members having peristaltic action having plate-like flexible members
Definitions
- the invention relates to a rotary displacement pump according to the preamble of the claim 1.
- From DE-U-296 09 865 is a rotary displacement pump consisting of a stator and a rotor of the type specified at the outset.
- the stator has an annular surface with inlet and outlet on which by a membrane to form a pump channel is covered.
- On the membrane is a ring of individually movable against the membrane Pressure transmission elements in the form of plungers, which are made of upright Plate elements are formed.
- a rotor is provided, which concentric Axis of the ring surface revolves. This rotor has rollers on the top of the pressure transmission members and thereby continuously locally against the membrane Press the ring surface so that the membrane progresses from the inlet to the outlet interrupts and pushes the pump material in front of it.
- critical pump media which clump together when conveyed by such a pump.
- To the critical Pump media include, for example, dispersions for structural plasters, effect paints (Color dispersions containing scale-like pigments, flakes or cutlets) and fibrous dispersions (e.g. cotton fibers in dispersion to form "liquid Wallpaper "). The dispersions become unusable due to clumping.
- DE-A-35 42 454 discloses a diaphragm rotary pump. It is between the membrane and a rubber insert is arranged on the housing on the inner raceway.
- This rubber insert should consist in that, on the one hand, a particularly favorable one Seal can be achieved especially with granular materials and that on the other hand because the higher elasticity, a longer service life can be achieved with greater silence.
- the invention has for its object to reduce the tendency to clump in critical pumping media when pumping through a rotary displacement pump of the type specified.
- the layer expediently extends from the softer material in accordance with the development in claim 2 only over that area of the pressure transmission members is covered. That is enough for optimal effectiveness.
- the advantage of the training according to claim 3 is that between the location and the base plate cannot get any pump medium and is deposited there.
- Silicones are suitable according to the further development in claim 4 as a softer material.
- Hardness from 20 to 50 Shore have according to the training in claim 5 especially for the softer material proven.
- the following are particularly suitable as dimensionally stable plastics: polyamide, ABS polymers and polystyrene.
- the pump has a stator 1 and a rotor 2.
- the stator 1 is part of the housing of the Pump and has a clamping plate 24, a hold-down 6, a base plate 3 and one Membrane 11 on.
- the base plate 3 is annular and coaxial to the axis 4 of the Rotor 2 arranged.
- the base plate 3 has a flat ring surface 5, which is limited by two conical clamping surfaces 9 and 10, which seen from the rotor 2 behind the Ring surface 5; they are opposite two further clamping surfaces 7 and 8, which on Hold-down devices 6 are formed and cooperate with the clamping surfaces 9 and 10 to clamp in between the membrane 11, which consists of an elastomeric material, is a ring-shaped, flat structure in a relaxed, non-installed state and is bent by clamping between the conical clamping surfaces 7 to 10, so that it arches the flat ring surface 5.
- a pump channel 12 in this way formed in which an inlet 13 and an outlet 15, which expediently tight is located next to the inlet 13, and - just to be able to represent it - in Figure 1 in diagonal arrangement is provided.
- the pump channel 12 is on the short path from the inlet 13 to the drain 15 by a survey 39 on the annular base plate 3 blocked by the elevations 39 in their radial section perpendicular to the base plate 3 are circular segment shaped.
- the two elevations 39 are radial on the Annular surface 5 of the base plate 3 is arranged. It prevents the pumping medium can penetrate into the area in the direction of rotation of the rotor 2 between outlet 15 and inlet 13 is.
- a filler material is introduced into an indentation 41 in the annular surface 5.
- the Recess 41 extends approximately along the entire pump channel 12 from the inlet 13 to the drain 15.
- a one-piece silicone bed is used as the filling material 35.
- the recess 41 is expediently rectangular in cross section, just as like the silicone bed 35, which is inserted precisely into the recess 41.
- the deepening 41 and the silicone bed 35 lying in it are facing the inlet or outlet 13, 15 Ends so delimited that their edge there is always on a radius of the Base plate 3 lie.
- the depth of the recess 41 and thereby also the thickness of the silicone bed 35 depend on the type of pump and the medium to be pumped.
- the silicone bed 35 expediently protrudes from the annular surface 5 of the base plate 3 so that the the pressure transmission members 14 pressed down membrane 11 not at the edges of the Well 41 can be damaged. Surprisingly, this silicone bed prevents 35 a solidification and separation of a dispersion to be pumped during the pumping process.
- a ring of plungers 14 is arranged, which as Serve pressure transmission members.
- the plungers 14 are T-shaped in longitudinal section parallel to the axis 4 and are arranged along the entire pump channel 12 which the Connects inlet 13 to outlet 15, but not over that section of membrane 11, which leads in the direction of rotation of the rotor 2 from the outlet 15 to the inlet 13, because there the Pump channel 12 interrupted by the elevation 39 provided on the annular base plate 3 is.
- the plungers 14 are arranged in the hold-down device 6 and parallel to the axis 4 secured by an adjusting ring 17 which counteracts the restoring force of the membrane 11 in Direction of the axis 4 is displaceable by means of an eccentric 19, so that the plunger 14 is one variable end stop, which allows the maximum cross section of the To reduce pump channel 12 and thus adjust the delivery rate of the pump.
- the rotor 2 rotates about a shaft 20 which is in a roller bearing 26 in the hold-down device 6 and is mounted in a further roller bearing 27 in the rear housing part.
- the rotor 2 has at least two idler rollers 21 - besides idler rollers 21 are driven as well Rolls conceivable - which roll over the plunger 14 and press it down, whereby the membrane 11 is pressed locally against the annular surface 5. This local pressure point wanders along the pump channel 12 with the rotor movement, pushes the one standing in front of it Amount of liquid through outlet 15 and simultaneously sucks through inlet 13 more liquid after.
- the delivery pressure of the pump depends on the preload of the membrane 11. This bias depends on the material and the thickness of the membrane 11, but also on the size 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, via the rear roller bearing 27, onto a collar 28 on the shaft 20 acts and thereby a spring 29 more or less tensions, which on the axially displaceable Carrier 30 of the rollers 21 bears. By turning the eccentric 22 e.g. by means of of a handwheel attached to the outside, the force with which the rollers 21st act on the membrane 11, be increased or decreased. With excessive pressure build-up under the membrane 11, the plunger 14 can avoid the pressure, insofar as the pressure force which exceeds the resetting force of the spring 29, which is variable by rotating the eccentric 22.
- the membrane 11 is braced by means of a threaded bolt 31, which in the hold-down device 6 is screwed in, extends through the clamping plate 24 and a nut 32 carries, which, when tightened, the clamping plate 24 against the base plate 3 and thus the base plate 3 presses against the edge of the membrane 11.
- a threaded bolt 31 which in the hold-down device 6 is screwed in
- a nut 32 carries, which, when tightened, the clamping plate 24 against the base plate 3 and thus the base plate 3 presses against the edge of the membrane 11.
- the wear occurs primarily on the hard Base plate 3, or on the soft silicone bed 35 and expresses itself due to the abrasion of the base plate 3, or the silicone bed 35 in an enlargement of the pump channel 12, the in turn leads to a reduction in the delivery pressure. At the drop in the delivery pressure it is therefore easy to see when an exchange is required.
- the pump channel 12 can also be formed by a hose be clamped between hold-down device 6 and clamping plate 24 and the entire area covered by the plungers 14.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Display Devices Of Pinball Game Machines (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Description
- Figur 1
- einen Längsschnitt durch eine erfindungsgemässe Pumpe entlang der Linie B-B in Figur 2,
- Figur 2
- eine Draufsicht auf eine Grundplatte und
- Figur 3
- einen vergrössert dargestellten Qürschnitt durch die Grundplatte entlang der Linie A-A in Figur 2.
Claims (6)
- Rotationsverdrängerpumpe
mit einem eine Grundplatte (3) mit einer Ringfläche (5) aufweisenden Stator (1),
wobei sich die Ringfläche (5) zumindest über einen Teil eines Vollkreises erstreckt,
wobei weiterhin in der Ringfläche (5) ein Zulauf (13) mündet und von der Ringfläche (5) ein Ablauf (15) abgeht,
wobei weiterhin die Ringfläche (5) von einer Membran (11) zur Ausbildung eines Pumpkanals (12) überdeckt ist und
wobei schließlich eine Kranz von einzeln gegen die Membran (11) sowie Ringfläche (5) beweglichen Druckübertragungsgliedem (14) insbesondere aus hochkant stehenden Plattenelementen vorgesehen ist, sowie
mit einem über den Druckübertragungsgliedern (14) angeordneten sowie um die konzentrische Achse (4) der Ringfläche (5) umlaufenden Rotor (2),
wobei der Rotor (2) mindestens eine Rolle (21) aufweist, welche auf der Rückseite der Druckübertragungsglieder (14) läuft und dadurch die Membran (11) derart fortlaufend lokal gegen die Ringfläche (5) drückt, daß die Membran (11) den Weg vom Zulauf (13) zum Ablauf (15) fortschreitend unterbricht und das Pumpmaterial vor sich herschiebt,
dadurch gekennzeichnet, dass in der Grundplatte (3) entlang des Pumpkanals (12) eine Vertiefung (41) ausgebildet ist,
dass sich in dieser Vertiefung (41) zur Bildung der Ringfläche (5) ein Material (35) befindet, welches weicher ist als das Material der Grundplatte (3), und
dass das Material (35) über die Vertiefung (41) übersteht. - Rotationsverdrängerpumpe nach dem vorhergehenden Anspruch,
dadurch gekennzeichnet, dass sich das weichere Material (35) über den Bereich erstreckt, der von den Druckübertragungsgliedern (14) überdeckt ist. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass das weichere Material (35) auf die Grundplatte (3) gegossen, vulkanisiert oder geklebt ist. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass das weichere Material (35) ein Silikon ist. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass das weichere Material (35) in einem Härtebereich von 20 bis 50 Shore liegt. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Grundplatte (3) aus formstabilem Kunststoff besteht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29707480U | 1997-04-25 | ||
DE29707480U DE29707480U1 (de) | 1997-04-25 | 1997-04-25 | Rotationsverdrängerpumpe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0874157A2 EP0874157A2 (de) | 1998-10-28 |
EP0874157A3 EP0874157A3 (de) | 1999-04-28 |
EP0874157B1 true EP0874157B1 (de) | 2002-12-18 |
Family
ID=8039528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98107092A Expired - Lifetime EP0874157B1 (de) | 1997-04-25 | 1998-04-18 | Rotationsverdrängerpumpe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0874157B1 (de) |
AT (1) | ATE230069T1 (de) |
DE (2) | DE29707480U1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1082625C (zh) * | 1999-07-07 | 2002-04-10 | 张建辉 | 一种带有三通式出入口的压电陶瓷泵 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2722893A (en) * | 1950-01-17 | 1955-11-08 | Maillot Leon Alfred | Collapsible chamber pump |
DE3542454A1 (de) * | 1985-11-30 | 1987-06-04 | Walter Swoboda | Membranrotationspumpe |
DE29511966U1 (de) * | 1994-09-17 | 1995-09-28 | Kammerer, Rolf, 75196 Remchingen | Rotationsverdrängerpumpe |
DE29609865U1 (de) | 1996-06-04 | 1996-10-24 | Kammerer, Rolf, 75196 Remchingen | Rotationsverdrängerpumpe |
-
1997
- 1997-04-25 DE DE29707480U patent/DE29707480U1/de not_active Expired - Lifetime
-
1998
- 1998-04-18 DE DE59806668T patent/DE59806668D1/de not_active Expired - Fee Related
- 1998-04-18 AT AT98107092T patent/ATE230069T1/de not_active IP Right Cessation
- 1998-04-18 EP EP98107092A patent/EP0874157B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE230069T1 (de) | 2003-01-15 |
DE59806668D1 (de) | 2003-01-30 |
DE29707480U1 (de) | 1997-07-17 |
EP0874157A3 (de) | 1999-04-28 |
EP0874157A2 (de) | 1998-10-28 |
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