EP0874157A2 - Rotationsverdrängerpumpe - Google Patents
Rotationsverdrängerpumpe Download PDFInfo
- Publication number
- EP0874157A2 EP0874157A2 EP98107092A EP98107092A EP0874157A2 EP 0874157 A2 EP0874157 A2 EP 0874157A2 EP 98107092 A EP98107092 A EP 98107092A EP 98107092 A EP98107092 A EP 98107092A EP 0874157 A2 EP0874157 A2 EP 0874157A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- base plate
- displacement pump
- membrane
- rotary displacement
- 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
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 with a base plate with a Stator having an annular surface, the annular surface being at least over part of a Full circle extends, with an inlet opening in the ring surface and from the Ring surface is a drain, the ring surface continues from a membrane for training a pump channel is covered and finally a wreath of individually against the membrane and annular surface movable pressure transmission members in particular is provided from upright plate elements, as well as with one over the Pressure transmission members arranged and around the concentric axis of the ring surface revolving rotor, wherein the rotor has at least one roller, which on the Back of the pressure transmission members runs and thereby the membrane continuously presses locally against the ring surface, that the membrane progresses the way from the inlet to the outlet interrupts and pushes the pump material in front of it.
- Such a rotary displacement pump is disclosed in DE 296 09 865 U1, which consists of a stator and a rotor.
- the stator has an annular surface with an inlet and drain, which is covered by a membrane to form a pump channel.
- On the membrane is a ring of individually movable against the membrane Pressure transmission members, which are formed from upright plate elements are.
- a rotor is also provided, which rotates around the concentric axis of the ring surface circulates. This rotor has two rollers, which on the top of the pressure transmission members run and thereby the membrane continuously locally against the ring surface press so that the membrane progressively interrupts the path from the inlet to the outlet and pushes the pump material in front of it.
- Critical pump media include dispersions for Structural plasters, effect paints (color dispersions, which flaky pigments, platelets or contain schnitzel) and fibrous dispersions (e.g. cotton fibers in dispersion to form "liquid wallpapers"). The dispersions become unusable due to clumping.
- the invention is therefore based on the object of reducing the tendency to clump these delicate materials when conveyed by such a pump.
- the invention proposes that the base plate has a layer made of a softer material than that of the base plate to form the annular surface along the pump channel.
- the pump carries along on its base plate to form the ring surface of the pump channel a layer of a softer material than that of the base plate.
- the layer of the softer material expediently extends only over that Area that is covered by the pressure transmission members. That is enough for one optimal effectiveness.
- the layer is made of softer material with the base plate by one of the following Possibilities connected:
- the softer material is poured onto the base plate, vulcanized or glued on.
- the advantage of these three options is that that no pump medium can get between the layer and the base plate and deposited there.
- Another advantageous development of the invention provides that the softer material is introduced into a recess in the base plate. This gives the softer material sideways Stop, and the wear on it is thereby when the pressure transmission members are pressed down diminished.
- Another advantageous development of the invention provides that the softer material protrudes beyond the recess. This prevents the membrane from protruding freely Pressed the top edge of the recess and thereby damage it.
- Silicones are suitable as a softer material. They can be made in different degrees of hardness will. Hardnesses of 20 to 50 Shore have become special for the softer material proven.
- Another advantageous development of the invention provides that the base plate between a hold-down and a clamping plate of the stator. This means that at a worn base plate or a worn softer layer on this only a part to be replaced and not the whole clamping plate. This lowers the cost of the operation significantly.
- a dimensionally stable Plastics are particularly suitable: 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 at the inlet or outlet 13, 15 facing ends so delimited that their edge there is always on a radius the base plate 3 are.
- the depth of the recess 41 and thereby also the thickness of the Silicone beds 35 depend on the type of pump and the medium to be pumped.
- the silicone bed 35 expediently protrudes over the annular surface 5 of the base plate 3, so that the membrane 11 pressed down by the pressure transmission members 14 does not adhere to the Edges of the recess 41 can be damaged. Surprisingly, this prevents Silicone bed 35 a solidification and segregation 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 through the elevation 39 provided on the annular base plate 3 is interrupted.
- 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 The direction of the axis 4 can be shifted by means of an eccentric 19, so that the joints 14 have a variable end stop that 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 locally printed on the ring surface 5. This local pressure point wanders along the pump channel 12 with the rotor movement, pushes it in front of it standing amount of liquid through the outlet 15 and at the same time sucks through the Feed 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 A handwheel attached to the outside can measure the force with which the rollers 21 act on the membrane 11, increased or decreased. With excessive pressure build-up under the membrane 11, the shocks 14 can avoid the pressure, as far as the Compressive force, the resetting force of the spring 29, which is variable by rotating the eccentric 22 exceeds.
- 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 so that the base plate 3 presses against the edge of the membrane 11.
- a nut 32 carries, which, when tightened, the clamping plate 24 against the base plate 3 and so that 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)
Abstract
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 (11)
- Rotationsverdrängerpumpemit 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 istund wobei schließlich eine Kranz von einzeln gegen die Membran (11) sowie Ringfläche (5) beweglichen Druckübertragungsgliedern (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 die Grundplatte (3) zur Bildung der Ringfläche (5) entlang des Pumpkanals (12) eine Lage aus einem weicheren Material als jenem der Grundplatte (3) trägt. - Rotationsverdrängerpumpe nach dem vorhergehenden Anspruch,
dadurch gekennzeichnet,dass die Lage sich über den Bereich erstreckt, der von den Druckübertragungsgliedern (14) überdeckt ist. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,dass das weichere Material auf die Grundplatte (3) gegossen ist. - Rotationsverdrängerpumpe nach Anspruch 1 oder 2,
dadurch gekennzeichnet,dass das weichere Material auf die Grundplatte (3) vulkanisiert ist. - Rotationsverdrängerpumpe nach Anspruch 1 oder 2,
dadurch gekennzeichnet,dass das weichere Material auf die Grundplatte (3) geklebt ist. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,dass sich das weichere Material in einer Vertiefung (41) der Grundplatte (3) befindet. - Rotationsverdrängerpumpe nach Anspruch 6,
dadurch gekennzeichnet,dass das weichere Material über die Vertiefung (41) heraussteht. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,dass das weichere Material ein Silikon ist. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,dass das weichere Material in einem Härtebereich von 20 bis 50 Shore liegt. - Rotationsverdrängerpumpe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,dass die Grundplatte (3) zwischen einem Niederhalter (6) und einer Spannplatte (24) des Stators (1) 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 true EP0874157A2 (de) | 1998-10-28 |
EP0874157A3 EP0874157A3 (de) | 1999-04-28 |
EP0874157B1 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) |
Cited By (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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29609865U1 (de) | 1996-06-04 | 1996-10-24 | Kammerer, Rolf, 75196 Remchingen | Rotationsverdrängerpumpe |
Family Cites Families (3)
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 |
-
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
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29609865U1 (de) | 1996-06-04 | 1996-10-24 | Kammerer, Rolf, 75196 Remchingen | Rotationsverdrängerpumpe |
Cited By (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 |
Also Published As
Publication number | Publication date |
---|---|
ATE230069T1 (de) | 2003-01-15 |
EP0874157B1 (de) | 2002-12-18 |
DE59806668D1 (de) | 2003-01-30 |
DE29707480U1 (de) | 1997-07-17 |
EP0874157A3 (de) | 1999-04-28 |
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