EP3431764B1 - Sinusoidal pump - Google Patents

Sinusoidal pump Download PDF

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Publication number
EP3431764B1
EP3431764B1 EP18184343.4A EP18184343A EP3431764B1 EP 3431764 B1 EP3431764 B1 EP 3431764B1 EP 18184343 A EP18184343 A EP 18184343A EP 3431764 B1 EP3431764 B1 EP 3431764B1
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EP
European Patent Office
Prior art keywords
slide
pump
sealing
channel
slide guide
Prior art date
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Application number
EP18184343.4A
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German (de)
French (fr)
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EP3431764A1 (en
Inventor
Manfred Sommer
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Marschall Quentin
Marschall Rouven
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Marschall Quentin
Marschall Rouven
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Publication of EP3431764A1 publication Critical patent/EP3431764A1/en
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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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/356—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C2/3568—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member with axially movable vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/80—Repairing methods
    • 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
    • F04C2240/00—Components
    • F04C2240/20—Rotors

Definitions

  • the invention relates to a sinus pump designed as a positive displacement pump.
  • Sinus pumps are particularly suitable for pumping thin, viscous and viscous products, especially those with lumpy parts.
  • lumpy goods such as strawberries can also be conveyed with such a pump without visibly damaging these goods.
  • Such pumps are mainly used in the chemical, pharmaceutical and food processing industries.
  • a pump of the type mentioned is known.
  • This pump has a rotor which is rotatably mounted on a drive shaft which can be connected to a motor drive.
  • the rotor has a radially protruding, wavy rotating rotor collar.
  • the pump inlet and outlet are separate. The inlet communicates with a suction space and the outlet with an outlet space. These two pump rooms are connected to each other via a pump channel.
  • the drive shaft driving the rotor extends far into the pump chamber. Your bearings are located in the area of the rear housing wall and on the other outside the pump housing in a hollow cylindrical shaft support. The rotor is thus seated on the collar end area of the drive shaft.
  • a sealing slide ensures that the medium conveyed through the pump channel from the inlet to the outlet cannot flow back past the sealing slide and back to the inlet.
  • the sealing slide can be adjusted in the axial direction by means of the rotor collar. During the rotary movement of the rotor, the sealing slide must therefore continuously bear tightly on both sides of the rotor collar. In addition, the sealing slide rests on the slide guide supporting it. Adequate sealing must also be provided between the rotor collar and the walls of the pump channel in the region of the stator that delimit it in the axial direction, in order not to impair the delivery effect and thus the efficiency of the pump.
  • a good seal of the pump channel in the area of the stator is also desirable for hygienic reasons in order to prevent product components from migrating into the gaps between the individual components.
  • This seal is to be achieved with interchangeable and interchangeable moldings for the pump channel containing stator parts which fit as closely as possible to the inside of the housing.
  • the invention has for its object to provide an improved sinus pump of the type mentioned, which is particularly low-maintenance and in which the components particularly affected by wear can be quickly replaced.
  • the sine pump according to the invention in accordance with the main claim is characterized in that the pump housing has a recess.
  • the slide guide for the sealing slide can be inserted in this recess in a fixed position.
  • the material of the sealing slide is usually dependent on the area of application of the pump.
  • an abrasion-resistant plastic is selected as the material for the sealing slide.
  • highly viscous media for example silicones with high toughness - a metallic material can also be used.
  • the sealing slide is subject to a certain amount of wear, so that an exchange of the sealing slide is necessary after a certain period of use.
  • the slide guide for the sealing slide can be removed within a few moments, so that the sealing slide can be easily replaced. All that needs to be done is to release the slide guide.
  • the pump cover on the other hand, does not have to be removed; the sine pump can also be used at its place of use remain. The production process is therefore only interrupted for a very short time.
  • the slide guide can preferably be attached to the pump housing surrounding the recess. This can be done for example via one or more screw fastenings. Such a fastening is economically inexpensive to manufacture and, if necessary, can be released quickly and using conventional tools.
  • the slide guide can be inserted precisely into the recess. This can be supported, for example, by profiling the recess.
  • the recess can have a corresponding inner contour, which is picked up again by a head region of the slide guide. In this way, a particularly tight and non-rotatable position fixation of the slide guide can be achieved.
  • the recess for the slide guide can run in particular in the longitudinal direction of the sine pump.
  • the longitudinal direction of the sinus pump corresponds to the axis of the drive shaft of the sinus pump. Since the sealing slide must be slidably mounted in the axial direction and thus in the longitudinal direction of the sinus pump, the recess can be made relatively narrow and thus small.
  • the cutout for the slide guide is generally arranged in the area of the housing surface that lies between the inlet and the outlet of the sinus pump.
  • the rotor collar has a total of two boundary surfaces, which are arranged at a certain mutual distance from one another.
  • the two boundary surfaces limit the rotor collar in the axial direction and leave the pump channel free between them.
  • the sealing slide is arranged between the two boundary surfaces.
  • the slide guide can have a slide channel.
  • the sealing slide can be slidably mounted in the slide channel.
  • the sealing slide can preferably be guided in the slide channel via a tongue and groove connection.
  • the tongue and groove connection serves both to guide the sealing slide and to seal (chicane).
  • the sealing slide can preferably have a groove running in the longitudinal direction on its outwardly facing upper side.
  • the slide guide can have a spring running in the longitudinal direction on its inward-facing underside.
  • the groove of the tongue and groove connection could, for example, also be designed as a dovetail groove; in this case the spring would be designed as a dovetail spring.
  • the slide channel can preferably have a wall unit on both sides at least in regions. These wall units can be designed so high that the sealing slide can rest against the wall units over approximately its entire height. Through the wall units, the bending moment of the sealing slide that occurs due to the pressurization can be absorbed by the wall units, so that no twisting and the associated tilting of the sealing slide can take place. Due to the formation of a total of two wall units, which are arranged on both sides of the sealing slide, the sine pump is suitable for both left and right-hand rotation. If only one wall unit was designed, the pump could only be operated in left-hand rotation or only in clockwise rotation.
  • the wall units do not have to be formed over the entire length of the slide channel.
  • the wall units should Cover the area of the pump channel to a large extent to enable the sealing slide to be guided for as long as possible.
  • a plurality of slots can preferably be present in the wall units. These slots are used to exchange wear parts that may be contained in the product to be conveyed. Such wear parts can be, for example, the small grains of strawberries that can be present when fruit yoghurt is conveyed.
  • wear parts can be, for example, the small grains of strawberries that can be present when fruit yoghurt is conveyed.
  • the wall unit may also consist of rod-shaped elements, so that there may be relatively large distances between the individual elements and thus also relatively wide slots in the wall elements.
  • the sealing slide When servicing the sinus pump, the sealing slide should preferably be able to be removed together with the slide guide.
  • the sealing slide can be mounted on the at least one of the two wall units of the slide guide by means of a tongue and groove connection.
  • the sealing slide can preferably have a groove running in the longitudinal direction on one of its side faces.
  • at least one of the two wall units can have a spring running in the longitudinal direction on its inside.
  • the groove of the tongue and groove connection could, for example, also be designed as a dovetail groove; in this case the spring would be designed as a dovetail spring.
  • relief channels can be provided in the corner region of the slide channel. Through these relief channels, the pump medium can be discharged both into the suction chamber and into the pressure chamber of the sinus pump. This also significantly relieves the pressure on the sealing slide compared to sine pumps known from the prior art. With conventional sinus pumps, the sealing slide is loaded twice, since it picks up the pending stroke Pressure from the opposite side must overcome. In contrast, the sealing slide in the sinus pump according to the invention moves in a pressure-neutral space.
  • the schematically illustrated sine pump 10 has a pump housing 12 with a circular cover 14.
  • the cover 14 is fastened to a jacket wall 18 by means of two screws 16.
  • additional screws 16 can be used for fastening.
  • a hollow cylindrical shaft support 20 projects through the rear wall 24 into the interior of the housing 12.
  • the material and cross-section of the shaft support 20 are designed such that its collar end region ending in the housing 12 is practically none under load has deflection relevant for the operation of the sinus pump 12.
  • a drive shaft projects centrally through the shaft support 20. The end of the drive shaft located outside the housing 12 can be connected in a rotationally fixed manner to a motor drive, not shown in the drawing, so that the drive shaft can be driven in both directions of rotation.
  • a rotor 30 is fixed in a rotationally fixed manner to the collar end of the drive shaft which ends in the interior of the housing 12.
  • a rotor collar 32 is integrally formed on the rotor 30.
  • This rotor collar 32 has a circumferential wave-like shape, as has already been mentioned in the prior art DE 34 18 708 A1 in detail is described.
  • the pump channel 38 is located between the two boundary surfaces 34, 36 of the rotor collar.
  • a medium can be conveyed from the inlet 40 to the outlet 42 of the sinus pump 12 via the pump channel.
  • the longitudinal axes of the inlet 40 and the outlet 42 are at right angles to one another.
  • the pump channel 38 is delimited by a stator 44.
  • the stator 44 is generally mounted on the housing 12 by means of one or more screws and is thus secured against rotation.
  • the pump chamber is divided into a pressure chamber and a suction chamber by the stator 44.
  • the stator 44 spans an angle of approximately 180 degrees, so that the area of the inlet 40 and the area of the outlet 42 are each left free.
  • the stator 44 is preferably made of a wear-resistant plastic, so that the inner diameter can also be used as a bearing for the shaft carrier 20.
  • the suction space and the outlet space are separated from each other in terms of pressure by a sealing slide 50.
  • the sealing slide 50 can be moved back and forth within a slide guide 52 in the axial direction 22.
  • the slide guide 52 has a head part 54, to which a U-shaped cantilever part 56 is fastened in the present example.
  • the sealing slide 50 is mounted between the two wall units 58, 60 of the cantilever part 56.
  • the two wall units 58, 60 do not extend over the entire length of the head part 54; rather, the two wall units 58, 60 are only present in the central region of the head part 54.
  • the head part 54 can be fastened to the housing 12 of the sinus pump 10 by means of several screws 62.
  • the housing 12 of the sinus pump 10 has a cutout 64.
  • the cutout 64 is arranged between the inlet 40 and the outlet 42 in the present example.
  • the dimensions of the recess 64 are selected such that the slide support 52 can be inserted, fixed and screwed to the pump housing 12 with a precise fit.
  • the central arrangement of the sealing slide 50 and the slide guide 52 between the two boundary surfaces 34, 36 of the rotor collar 32 has the advantage that almost no transport medium has to be displaced. This means that the product to be transported is significantly less damaged.
  • the first embodiment accordingly 1 to 3 shows a very simple design of sealing slide 50 and slide guide 52.
  • the slide guide 52.2 has a head part 54.2 which, in its essentially rectangular outer contour, has two arcuate indentations 70, 72. Accordingly, the recess in the pump housing would also have a correspondingly profiled outer contour. This profiling prevents the slide guide 52.2 from rotating during operation of the pump 10.
  • the circular-arc-shaped recesses 70, 72 enable the slide guide 52.2 to be removed from the housing 12 even when pipelines are connected to the inlet 40 and the outlet 42. It is therefore not necessary to dismantle the sine pump 12 to replace the slide guide 52.2 and / or the sealing slide 50.2.
  • the head part 54.2 can be fastened to the pump housing by means of four screws 62. Two protrude from the middle of the head part 54.2 Wall units 58.2, 60.2 downwards. The two wall units 58.2, 60.2 are only present in the central region of the head part 54.2.
  • the sealing slide 50.2 can be guided in a slide channel 74 between the two wall units 58.2, 60.2.
  • the two wall units 58.2, 60.2 each have five rod-shaped elements 76, so that both wall units 58.2, 60.2 have a plurality of slots 78.
  • Relief channels 80 are formed in the corner region of the slide channel 74.
  • the relief channels 80 of the slide guide 52.2 align with relief channels 46 of the sine pump 10.
  • a spring 82 is present on the head part 54.2 of the slide guide 52.2.
  • the spring 82 is present approximately in the middle of the two wall units 58.2, 60.2 and runs parallel to these.
  • the sealing slide 50.2 has a corresponding groove 84 on its upper side. This tongue and groove connection secures the sealing slide 50.2 against twisting and bending.
  • the sealing slide 50.2 should generally also be able to be removed together with the slide guide 52.2.
  • an inwardly pointing pin 90 is present on one of the two wall units 58.2 in the present example. This pin 90 projects into a groove 92 provided in the outside of the sealing slide 50.2.
  • the sine pump 10.3 has a pump housing 12.3 with a circular cover 14.3.
  • the cover 14.3 is fastened to a jacket wall 18.3 by means of screws.
  • a hollow cylindrical shaft support 20.3, the cylinder axis of which coincides with the longitudinal axis 22 of the sine pump 10.3, projects through the rear wall 24.3 into the interior of the housing 12.3.
  • a drive shaft projects centrally through the shaft support 20.3.
  • a rotor 30.3 is fixed in a rotationally fixed manner to the collar end of the drive shaft which ends in the interior of the housing 12.3.
  • a rotor collar 32.3 is integrally formed on the rotor 30.3.
  • This rotor collar 32.3 has two circumferential undulating boundary surfaces 34.3, 36.3.
  • the pump channel 38.3 is located between the two boundary surfaces 34.3, 36.3 of the rotor collar.
  • a medium can be conveyed from the inlet 40.3 to the outlet 42.3 of the sinus pump 12.3 via the pump channel 38.3.
  • the longitudinal axes of the inlet 40.3 and the outlet 42.3 are at right angles to one another.
  • the pump channel 38.3 is delimited by a stator 44.3.
  • the stator 44.3 divides the pump chamber into a pressure chamber and a suction chamber.
  • the suction space and the outlet space are separated from each other in terms of pressure by a sealing slide 50.3.
  • the sealing slide 50.3 can be moved back and forth within a slide guide 52.3 in the axial direction 22.
  • the sealing slide 50.3 is arranged between the two boundary surfaces 34.3, 36.3 and is moved by the movement of the two boundary surfaces 34.3, 36.3 during the rotation of the rotor 30.3.
  • the slide guide 52.3 has two guide grooves 100, 102 which are formed in the inside of the housing 12.3.
  • the slide guide 52.3 has a plurality of setscrews 104 which pass through the housing 12.3 protrude and frame the sealing slide 50.3 sideways.
  • the central arrangement of the sealing slide 50.3 between the two boundary surfaces 34.3, 36.3 of the rotor collar 32.3 has the advantage that almost no transport medium has to be displaced. This creates a smooth and shock-free displacement, which enables gentle and low-noise transport.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die Erfindung betrifft eine als Verdrängerpumpe konzipierte Sinuspumpe. Sinuspumpen eignen sich insbesondere zur Förderung von dünn-, dick- und zähflüssigen Produkten, insbesondere von solchen mit stückigen Anteilen. Im niedrigen Drehzahlbereich (im Bereich von etwa 600 Umdrehungen pro Minute) können auch stückige Güter wie beispielsweise Erdbeeren mit einer solchen Pumpe gefördert werden, ohne diese Güter erkennbar zu beschädigen. Derartige Pumpen werden hauptsächlich in der chemischen, pharmazeutischen und in der Lebensmittel verarbeitenden Industrie eingesetzt.The invention relates to a sinus pump designed as a positive displacement pump. Sinus pumps are particularly suitable for pumping thin, viscous and viscous products, especially those with lumpy parts. In the low speed range (in the range of about 600 revolutions per minute), lumpy goods such as strawberries can also be conveyed with such a pump without visibly damaging these goods. Such pumps are mainly used in the chemical, pharmaceutical and food processing industries.

STAND DER TECHNIKSTATE OF THE ART

Aus der DE 34 18 708 A1 ist eine Pumpe der eingangs genannten Art bekannt. Diese Pumpe besitzt einen Rotor, der drehfest auf einer mit einem motorischen Antrieb verbindbaren Antriebswelle gelagert ist. Der Rotor besitzt einen radial wegstehenden, wellenförmig umlaufenden Rotorkragen. Der Einlass und der Auslass der Pumpe sind voneinander getrennt. Der Einlass kommuniziert mit einem Ansaugraum und der Auslass mit einem Auslassraum. Diese beiden Pumpenräume sind über einen Pumpkanal miteinander verbunden. Die den Rotor antreibende Antriebswelle ragt bei dieser Pumpe weit in den Pumpenraum hinein. Ihre Lagerstellen befinden sich einmal im Bereich der rückwärtigen Gehäusewand und zum anderen außerhalb des Pumpengehäuses in einem hohlzylindrischen Wellenträger. Der Rotor sitzt damit auf dem Kragendbereich der Antriebswelle. Aufgrund der unvermeidlichen Durchbiegungen des Kragendbereiches der Antriebswelle, die umso höher sind, je höher die Arbeitsdrücke sind, mit denen die Pumpe betrieben wird, müssen entsprechend große Toleranzen zwischen den rotierenden Teilen - wie dem Rotorkragen - und den nicht rotierenden Teilen - wie den den Pumpkanal seitlich einrahmenden Kanalwänden des Stators - berücksichtigt werden, um einen unerwünscht hohen Verschleiß von aneinander reibenden Teilen zu vermeiden.From the DE 34 18 708 A1 a pump of the type mentioned is known. This pump has a rotor which is rotatably mounted on a drive shaft which can be connected to a motor drive. The rotor has a radially protruding, wavy rotating rotor collar. The pump inlet and outlet are separate. The inlet communicates with a suction space and the outlet with an outlet space. These two pump rooms are connected to each other via a pump channel. In this pump, the drive shaft driving the rotor extends far into the pump chamber. Your bearings are located in the area of the rear housing wall and on the other outside the pump housing in a hollow cylindrical shaft support. The rotor is thus seated on the collar end area of the drive shaft. Due to the inevitable deflections of the collar end area of the drive shaft, the higher the higher the working pressures with which the pump is operated, correspondingly large tolerances between the rotating parts - such as the rotor collar - and the non-rotating parts - such as the channel walls of the stator that laterally frame the pump channel - are to be taken into account in order to avoid undesirably high wear of parts rubbing against one another.

Mittels eines Dichtschiebers wird sichergestellt, dass das durch den Pumpkanal vom Einlass zum Auslass geförderte Medium nicht an dem Dichtschieber vorbei rückwärts wieder zum Einlass fließen kann. Der Dichtschieber kann dazu mittels des Rotorkragens in axialer Richtung verstellt werden. Während der rotativen Bewegung des Rotors muss der Dichtschieber daher kontinuierlich dicht beidseitig an dem Rotorkragen anliegen. Außerdem liegt der Dichtschieber dichtend an der ihn abstützenden Schieberführung an. Eine ausreichende Abdichtung muss auch zwischen dem Rotorkragen und den ihn in axialer Richtung begrenzenden Wänden des Pumpkanals im Bereich des Stators vorhanden sein, um die Förderwirkung und damit den Wirkungsgrad der Pumpe nicht zu beeinträchtigen.A sealing slide ensures that the medium conveyed through the pump channel from the inlet to the outlet cannot flow back past the sealing slide and back to the inlet. For this purpose, the sealing slide can be adjusted in the axial direction by means of the rotor collar. During the rotary movement of the rotor, the sealing slide must therefore continuously bear tightly on both sides of the rotor collar. In addition, the sealing slide rests on the slide guide supporting it. Adequate sealing must also be provided between the rotor collar and the walls of the pump channel in the region of the stator that delimit it in the axial direction, in order not to impair the delivery effect and thus the efficiency of the pump.

Eine gute Abdichtung des Pumpkanals ist im Bereich des Stators aus auch hygienischen Gründen wünschenswert, um ein Hineinwandern von Produktbestandteilen in die zwischen den einzelnen Bauteilen vorhandenen Spalten zu verhindern. Diese Abdichtung soll mit möglichst eng an die Gehäuseinnenseite sich anschmiegenden, auswechselbaren und Ausformungen für den Pumpkanal enthaltenden Statorteilen erreicht werden.A good seal of the pump channel in the area of the stator is also desirable for hygienic reasons in order to prevent product components from migrating into the gaps between the individual components. This seal is to be achieved with interchangeable and interchangeable moldings for the pump channel containing stator parts which fit as closely as possible to the inside of the housing.

In der GB2183732A , der DE 20 2004 000 183 U1 , der DE 20 2004 000 184 U1 , der DE 20 2004 000 185 U1 , der DE 20 2004 000 186 U1 und der DE 20 2004 000 188 U1 sind verschiedene Weiterbildungen der eingangs genannten Pumpe beschrieben.In the GB2183732A , the DE 20 2004 000 183 U1 , the DE 20 2004 000 184 U1 , the DE 20 2004 000 185 U1 , the DE 20 2004 000 186 U1 and the DE 20 2004 000 188 U1 Various developments of the pump mentioned at the outset are described.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Ausgehend von diesem vorbekannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine verbesserte Sinuspumpe der eingangs genannten Art anzugeben, die besonders wartungsarm ist und bei der die besonders vom Verschleiß betroffenen Bauteile rasch ausgetauscht werden können.Based on this prior art, the invention has for its object to provide an improved sinus pump of the type mentioned, which is particularly low-maintenance and in which the components particularly affected by wear can be quickly replaced.

Die erfindungsgemäße Sinuspumpe ist durch die Merkmale des Hauptanspruchs gegeben. Sinnvolle Weiterbildungen der Erfindung sind Gegenstand von sich an diesen Anspruch anschließenden weiteren Ansprüchen.The sine pump according to the invention is given by the features of the main claim. Useful further developments of the invention are the subject of further claims following this claim.

Die erfindungsgemäße Sinuspumpe entsprechend dem Hauptanspruch zeichnet sich erfindungsgemäß dadurch aus, dass das Pumpengehäuse ein Aussparung aufweist. In diese Aussparung kann die Schieberführung für den Dichtschieber lagefixiert eingesetzt werden.The sine pump according to the invention in accordance with the main claim is characterized in that the pump housing has a recess. The slide guide for the sealing slide can be inserted in this recess in a fixed position.

Das Material des Dichtschiebers ist in der Regel abhängig vom Einsatzgebiet der Pumpe. So wird bei einer Förderung von Lebensmitteln regelmäßig ein abriebfester Kunststoff als Material für den Dichtschieber gewählt. Bei einer Förderung von hochviskosen Medien - beispielsweise von Silikonen mit einer hohen Zähigkeit - kann dagegen auch auf einen metallischen Werkstoff zurückgegriffen werden. Der Dichtschieber unterliegt in beiden Fällen einem gewissen Verschleiß, so dass ein Austausch des Dichtschiebers nach einer gewissen Einsatzdauer erforderlich ist. Durch die Aussparung im Pumpengehäuse kann die Schieberführung für den Dichtschieber innerhalb weniger Augenblicke entnommen werden, so dass ein Auswechseln des Dichtschiebers problemlos möglich ist. Dazu muss lediglich die Fixierung der Schieberführung gelöst werden. Der Pumpendeckel muss dagegen nicht demontiert werden, auch kann die Sinuspumpe an ihrem Einsatzort verbleiben. Somit wird der Produktionsprozess nur sehr kurz unterbrochen.The material of the sealing slide is usually dependent on the area of application of the pump. For example, when conveying food, an abrasion-resistant plastic is selected as the material for the sealing slide. When conveying highly viscous media - for example silicones with high toughness - a metallic material can also be used. In both cases, the sealing slide is subject to a certain amount of wear, so that an exchange of the sealing slide is necessary after a certain period of use. Due to the recess in the pump housing, the slide guide for the sealing slide can be removed within a few moments, so that the sealing slide can be easily replaced. All that needs to be done is to release the slide guide. The pump cover, on the other hand, does not have to be removed; the sine pump can also be used at its place of use remain. The production process is therefore only interrupted for a very short time.

Die Schieberführung kann vorzugsweise an dem die Aussparung umgebenden Pumpengehäuse befestigt werden. Dies kann beispielsweise über eine oder mehrere Schraubbefestigungen erfolgen. Eine solche Befestigung ist wirtschaftlich günstig herzustellen und kann bei Bedarf rasch und mit üblichen Werkzeugen gelöst werden.The slide guide can preferably be attached to the pump housing surrounding the recess. This can be done for example via one or more screw fastenings. Such a fastening is economically inexpensive to manufacture and, if necessary, can be released quickly and using conventional tools.

Die Schieberführung kann insbesondere passgenau in die Aussparung eingesetzt werden. Dies kann beispielsweise durch eine profilierte Ausbildung der Aussparung noch unterstützt werden. So kann die Aussparung eine entsprechende Innenkontur aufweisen, die von einem Kopfbereich der Schieberführung wieder aufgegriffen wird. Auf diese Weise kann eine besonders dichte und verdrehsichere Lagefixierung der Schieberführung erreicht werden.In particular, the slide guide can be inserted precisely into the recess. This can be supported, for example, by profiling the recess. For example, the recess can have a corresponding inner contour, which is picked up again by a head region of the slide guide. In this way, a particularly tight and non-rotatable position fixation of the slide guide can be achieved.

Die Aussparung für die Schieberführung kann insbesondere in Längsrichtung der Sinuspumpe verlaufen. Die Längsrichtung der Sinuspumpe entspricht dabei der Achse der Antriebswelle der Sinuspumpe. Da der Dichtschieber in axialer Richtung und damit in Längsrichtung der Sinuspumpe verschieblich gelagert sein muss, kann die Aussparung verhältnismäßig schmal und damit klein ausgebildet sein.The recess for the slide guide can run in particular in the longitudinal direction of the sine pump. The longitudinal direction of the sinus pump corresponds to the axis of the drive shaft of the sinus pump. Since the sealing slide must be slidably mounted in the axial direction and thus in the longitudinal direction of the sinus pump, the recess can be made relatively narrow and thus small.

Die Aussparung für die Schieberführung ist in der Regel in demjenigen Bereich der Gehäuseoberfläche angeordnet, der zwischen dem Einlass und dem Auslass der Sinuspumpe liegt.The cutout for the slide guide is generally arranged in the area of the housing surface that lies between the inlet and the outlet of the sinus pump.

Bei der erfindungsgemäßen Sinuspumpe weist der Rotorkragen insgesamt zwei Begrenzungsflächen auf, die mit einem gewissen gegenseitigen Abstand zueinander angeordnet sind. Die beiden Begrenzungsflächen begrenzen den Rotorkragen in axialer Richtung und lassen den Pumpkanal zwischen sich frei. Der Dichtschieber ist zwischen den beiden Begrenzungsflächen angeordnet. Eine derartige Ausführungsform der Sinuspumpe zeichnet sich insgesamt durch einen besonders geräuscharmen Betrieb aus. Daher ist eine solche Ausführungsform auch ohne die Aussparung im Pumpengehäuse von eigenständiger erfinderischer Bedeutung.In the sinus pump according to the invention, the rotor collar has a total of two boundary surfaces, which are arranged at a certain mutual distance from one another. The two boundary surfaces limit the rotor collar in the axial direction and leave the pump channel free between them. The sealing slide is arranged between the two boundary surfaces. Such an embodiment of the sinus pump is characterized overall by a special quiet operation. Therefore, such an embodiment is of independent inventive importance even without the recess in the pump housing.

In einer besonders bevorzugten Ausführungsform kann die Schieberführung einen Schieberkanal aufweisen. In dem Schieberkanal kann der Dichtschieber verschieblich gelagert sein. Vorzugsweise kann der Dichtschieber über eine Nut-Feder-Verbindung in dem Schieberkanal geführt werden. Die Nut-Feder-Verbindung dient dabei sowohl der Führung des Dichtschiebers als auch der Abdichtung (Schikane).In a particularly preferred embodiment, the slide guide can have a slide channel. The sealing slide can be slidably mounted in the slide channel. The sealing slide can preferably be guided in the slide channel via a tongue and groove connection. The tongue and groove connection serves both to guide the sealing slide and to seal (chicane).

Vorzugsweise kann der Dichtschieber an seiner nach außen weisenden Oberseite eine in Längsrichtung verlaufende Nut aufweisen. In gleicher Weise kann die Schieberführung an ihrer nach innen weisenden Unterseite eine in Längsrichtung verlaufende Feder aufweisen. Die Nut der Nut-Feder-Verbindung könnte beispielsweise auch als Schwalbenschwanz-Nut ausgebildet sein; die Feder wäre in diesem Fall als Schwalbenschwanz-Feder ausgebildet.The sealing slide can preferably have a groove running in the longitudinal direction on its outwardly facing upper side. In the same way, the slide guide can have a spring running in the longitudinal direction on its inward-facing underside. The groove of the tongue and groove connection could, for example, also be designed as a dovetail groove; in this case the spring would be designed as a dovetail spring.

Vorzugsweise kann der Schieberkanal beidseitig zumindest bereichsweise jeweils eine Wandeinheit aufweisen. Diese Wandeinheiten können so hoch ausgebildet sein, dass der Dichtschieber etwa über seine gesamte Höhe an den Wandeinheiten anliegen kann. Durch die Wandeinheiten kann das durch die Druckbeaufschlagung auftretende Biegemoment des Dichtschiebers von den Wandeinheiten aufgenommen werden, so dass keine Verdrehung und damit einhergehende Verkantung des Dichtschiebers erfolgen kann. Durch die Ausbildung von insgesamt zwei Wandeinheiten, die beidseitig des Dichtschiebers angeordnet sind, ist die Sinuspumpe sowohl für den Links- als auch für den Rechtslauf geeignet. Bei der Ausbildung nur einer Wandeinheit, könnte die Pumpe nur im Linkslauf oder nur im Rechtslauf betrieben werden.The slide channel can preferably have a wall unit on both sides at least in regions. These wall units can be designed so high that the sealing slide can rest against the wall units over approximately its entire height. Through the wall units, the bending moment of the sealing slide that occurs due to the pressurization can be absorbed by the wall units, so that no twisting and the associated tilting of the sealing slide can take place. Due to the formation of a total of two wall units, which are arranged on both sides of the sealing slide, the sine pump is suitable for both left and right-hand rotation. If only one wall unit was designed, the pump could only be operated in left-hand rotation or only in clockwise rotation.

Die Wandeinheiten müssen nicht über die gesamte Länge des Schieberkanals ausgebildet sein. Vorzugsweise sollten die Wandeinheiten den Bereich des Pumpkanals weitgehend abdecken, um eine möglichst lange Führung des Dichtschiebers zu ermöglichen.The wall units do not have to be formed over the entire length of the slide channel. Preferably, the wall units should Cover the area of the pump channel to a large extent to enable the sealing slide to be guided for as long as possible.

In den Wandeinheiten können vorzugsweise mehrere Schlitze vorhanden sein. Diese Schlitze dienen dem Austausch von Schleißteilen, die im zu fördernden Produkt enthalten sein können. Bei derartigen Schleißteilen kann es sich beispielsweise um die kleinen Körner von Erdbeeren handeln, die bei der Förderung von Fruchtjoghurt vorhanden sein können. Abhängig von der Größe der zu erwartenden Schleißteile kann die Wandeinheit gegebenenfalls auch aus stabförmigen Elementen bestehen, so dass verhältnismäßig große Abstände zwischen den einzelnen Elementen und damit auch verhältnismäßig breite Schlitze in den Wandelementen vorhanden sein können.A plurality of slots can preferably be present in the wall units. These slots are used to exchange wear parts that may be contained in the product to be conveyed. Such wear parts can be, for example, the small grains of strawberries that can be present when fruit yoghurt is conveyed. Depending on the size of the wear parts to be expected, the wall unit may also consist of rod-shaped elements, so that there may be relatively large distances between the individual elements and thus also relatively wide slots in the wall elements.

Bei einer Wartung der Sinuspumpe soll der Dichtschieber vorzugsweise gemeinsam mit der Schieberführung entnommen werden können. Aus diesem Grund kann der Dichtschieber mittels einer Nut-Feder-Verbindung an der zumindest einer der beiden Wandeinheiten der Schieberführung gelagert sein. Vorzugsweise kann der Dichtschieber an einer seiner Seitenflächen eine in Längsrichtung verlaufende Nut aufweisen. In gleicher Weise kann zumindest eine der beiden Wandeinheiten an ihrer Innenseite eine in Längsrichtung verlaufende Feder aufweisen. Die Nut der Nut-Feder-Verbindung könnte beispielsweise auch als Schwalbenschwanz-Nut ausgebildet sein; die Feder wäre in diesem Fall als Schwalbenschwanz-Feder ausgebildet.When servicing the sinus pump, the sealing slide should preferably be able to be removed together with the slide guide. For this reason, the sealing slide can be mounted on the at least one of the two wall units of the slide guide by means of a tongue and groove connection. The sealing slide can preferably have a groove running in the longitudinal direction on one of its side faces. In the same way, at least one of the two wall units can have a spring running in the longitudinal direction on its inside. The groove of the tongue and groove connection could, for example, also be designed as a dovetail groove; in this case the spring would be designed as a dovetail spring.

Damit das eingeschlossenen Pumpmedium bei der Bewegung des Dichtschiebers nicht innerhalb der Schieberstütze komprimiert werden kann, können im Eckbereich des Schieberkanals Entlastungskanäle vorgesehen sein. Durch diese Entlastungskanäle kann das Pumpmedium sowohl in den Saugraum als auch in den Druckraum der Sinuspumpe abgeführt werden. Dadurch wird auch eine deutliche Entlastung des Dichtschieber im Vergleich zu aus dem Stand der Technik bekannten Sinuspumpen erreicht. Bei herkömmlichen Sinuspumpen wird der Dichtschieber doppelt belastet, da dieser bei jedem Hub den anstehenden Druck der gegenüberliegenden Seite überwinden muss. Dagegen bewegt sich der Dichtschieber bei der erfindungsgemäßen Sinuspumpe in einem druck-neutralen Raum.So that the enclosed pump medium cannot be compressed within the slide support during the movement of the sealing slide, relief channels can be provided in the corner region of the slide channel. Through these relief channels, the pump medium can be discharged both into the suction chamber and into the pressure chamber of the sinus pump. This also significantly relieves the pressure on the sealing slide compared to sine pumps known from the prior art. With conventional sinus pumps, the sealing slide is loaded twice, since it picks up the pending stroke Pressure from the opposite side must overcome. In contrast, the sealing slide in the sinus pump according to the invention moves in a pressure-neutral space.

Weitere Vorteile und Merkmale der Erfindung sind den in den Ansprüchen ferner angegebenen Merkmalen sowie den nachstehenden Ausführungsbeispielen zu entnehmen.Further advantages and features of the invention can be found in the features further specified in the claims and in the exemplary embodiments below.

KURZE BESCHREIBUNG DER ZEICHNUNGBRIEF DESCRIPTION OF THE DRAWING

Die Erfindung wird im Folgenden anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher beschrieben und erläutert. Es zeigen:

Fig. 1
einen schematischen Längsschnitt durch eine erste Ausführungsform der erfindungsgemäßen Sinuspumpe, bei der Schieberführung und Dichtschieber ausgebaut sind,
Fig. 2
eine schematische Vorderansicht der Sinuspumpe gemäß Fig. 1 bei der Schieberführung und Dichtschieber eingebaut sind,
Fig. 3
eine schematische Vorderansicht der Sinuspumpe gemäß Fig. 1 bei der Schieberführung und Dichtschieber ausgebaut sind,
Fig. 4
eine schematische Vorderansicht einer zweiten Ausführungsform der erfindungsgemäßen Sinuspumpe, bei der Schieberführung und Dichtschieber ausgebaut sind,
Fig. 5
eine Draufsicht auf die Schieberführung mit Dichtschieber der Sinuspumpe gemäß Fig. 4,
Fig. 6
eine Seitenansicht von Schieberführung und Dichtschieber gemäß Fig. 5,
Fig. 7
einen Querschnitt durch Schieberführung und Dichtschieber gemäß Fig. 5,
Fig. 8
einen schematischen Längsschnitt durch eine dritte Ausführungsform der erfindungsgemäßen Sinuspumpe, bei der Schieberführung und Dichtschieber eingebaut sind, und
Fig. 9
eine schematische Vorderansicht der Sinuspumpe gemäß Fig. 8 bei der Schieberführung und Dichtschieber eingebaut sind,
The invention is described and explained in more detail below with reference to the exemplary embodiments shown in the drawing. Show it:
Fig. 1
2 shows a schematic longitudinal section through a first embodiment of the sinus pump according to the invention, in which the slide guide and sealing slide are removed,
Fig. 2
is a schematic front view of the sine pump according to Fig. 1 the slide guide and sealing slide are installed,
Fig. 3
is a schematic front view of the sine pump according to Fig. 1 the slide guide and sealing slide are removed,
Fig. 4
2 shows a schematic front view of a second embodiment of the sinus pump according to the invention, in which the slide guide and sealing slide are removed,
Fig. 5
a plan view of the slide guide with sealing slide of the sine pump according Fig. 4 ,
Fig. 6
a side view of slide guide and sealing slide according Fig. 5 ,
Fig. 7
a cross section through slide guide and sealing slide according Fig. 5 ,
Fig. 8
a schematic longitudinal section through a third embodiment of the sine pump according to the invention, are installed in the slide guide and sealing slide, and
Fig. 9
is a schematic front view of the sine pump according to Fig. 8 the slide guide and sealing slide are installed,

WEGE ZUM AUSFÜHREN DER ERFINDUNGWAYS OF CARRYING OUT THE INVENTION

Die in Fig. 1 schematisch dargestellte Sinuspumpe 10 besitzt ein Pumpengehäuse 12 mit einem kreisförmigen Deckel 14. Der Deckel 14 ist im vorliegenden Beispielsfall mittels zweier Schrauben 16 an einer Mantelwand 18 befestigt. Je nach Erfordernis können weitere Schrauben 16 zur Befestigung verwendet werden.In the Fig. 1 The schematically illustrated sine pump 10 has a pump housing 12 with a circular cover 14. In the present example, the cover 14 is fastened to a jacket wall 18 by means of two screws 16. Depending on requirements, additional screws 16 can be used for fastening.

Ein hohlzylindrischer Wellenträger 20, dessen Zylinderachse mit der Längsachse 22 der Sinuspumpe 10 zusammenfällt, ragt durch die Rückwand 24 hindurch in den Innenraum des Gehäuses 12. Der Wellenträger 20 ist materialmäßig und querschnittsmäßig so ausgebildet, dass sein im Gehäuse 12 endender Kragendbereich unter Belastung praktisch keine für den Betrieb der Sinuspumpe 12 relevante Durchbiegung aufweist. Zentral durch den Wellenträger 20 hindurch ragt eine Antriebswelle. Das außerhalb des Gehäuses 12 liegende Ende der Antriebswelle kann drehfest an einen in der Zeichnung nicht dargestellten motorischen Antrieb angeschlossen werden, so dass die Antriebswelle in beiden Rotationsrichtungen angetrieben werden kann.A hollow cylindrical shaft support 20, the cylinder axis of which coincides with the longitudinal axis 22 of the sine pump 10, projects through the rear wall 24 into the interior of the housing 12. The material and cross-section of the shaft support 20 are designed such that its collar end region ending in the housing 12 is practically none under load has deflection relevant for the operation of the sinus pump 12. A drive shaft projects centrally through the shaft support 20. The end of the drive shaft located outside the housing 12 can be connected in a rotationally fixed manner to a motor drive, not shown in the drawing, so that the drive shaft can be driven in both directions of rotation.

An dem im Innenraum des Gehäuses 12 endenden Kragende der Antriebswelle ist ein Rotor 30 drehfest befestigt. An dem Rotor 30 ist ein Rotorkragen 32 einstückig angeformt. Dieser Rotorkragen 32 besitzt eine umlaufende wellenförmige Gestalt, so wie dies in der vorstehend zum Stand der Technik bereits erwähnten DE 34 18 708 A1 ausführlich beschrieben ist. Zwischen den beiden Begrenzungsflächen 34, 36 des Rotorkragens befindet sich der Pumpkanal 38. Über den Pumpkanal kann ein Medium vom Einlass 40 zum Auslass 42 der Sinuspumpe 12 befördert werden. Im vorliegenden Beispielsfall stehen die Längsachsen des Einlasses 40 und des Auslasses 42 rechtwinkelig aufeinander.A rotor 30 is fixed in a rotationally fixed manner to the collar end of the drive shaft which ends in the interior of the housing 12. A rotor collar 32 is integrally formed on the rotor 30. This rotor collar 32 has a circumferential wave-like shape, as has already been mentioned in the prior art DE 34 18 708 A1 in detail is described. The pump channel 38 is located between the two boundary surfaces 34, 36 of the rotor collar. A medium can be conveyed from the inlet 40 to the outlet 42 of the sinus pump 12 via the pump channel. In the present example, the longitudinal axes of the inlet 40 and the outlet 42 are at right angles to one another.

Der Pumpkanal 38 wird durch einen Stator 44 begrenzt. Der Stator 44 ist in der Regel mittels einer oder mehrerer Schrauben an dem Gehäuse 12 montiert und somit gegen Verdrehung gesichert. Durch den Stator 44 wird der Pumpenraum in einen Druckraum und einen Saugraum unterteilt. Der Stator 44 umspannt einen Winkel von etwa 180 Grad, so dass der Bereich des Einlasses 40 und der Bereich des Auslasses 42 jeweils freigelassen wird. Der Stator 44 ist vorzugsweise aus einem verschleißfesten Kunststoff hergestellt, so dass der innere Durchmesser auch als Lagerung für den Wellenträger 20 verwendet werden kann.The pump channel 38 is delimited by a stator 44. The stator 44 is generally mounted on the housing 12 by means of one or more screws and is thus secured against rotation. The pump chamber is divided into a pressure chamber and a suction chamber by the stator 44. The stator 44 spans an angle of approximately 180 degrees, so that the area of the inlet 40 and the area of the outlet 42 are each left free. The stator 44 is preferably made of a wear-resistant plastic, so that the inner diameter can also be used as a bearing for the shaft carrier 20.

Der Ansaugraum und der Auslassraum sind durch einen Dichtschieber 50 druckmäßig voneinander getrennt. Der Dichtschieber 50 ist innerhalb einer Schieberführung 52 in axialer Richtung 22 hin und her bewegbar. Die Schieberführung 52 besitzt dazu ein Kopfteil 54, an dem im vorliegenden Beispielsfall ein U-förmiges Kragteil 56 befestigt ist. Zwischen den beiden Wandeinheiten 58, 60 des Kragteils 56 ist der Dichtschieber 50 gelagert. Die beiden Wandeinheiten 58, 60 verlaufen dabei nicht über die gesamte Länge des Kopfteils 54; vielmehr sind die beiden Wandeinheiten 58, 60 lediglich im mittleren Bereich des Kopfteils 54 vorhanden.The suction space and the outlet space are separated from each other in terms of pressure by a sealing slide 50. The sealing slide 50 can be moved back and forth within a slide guide 52 in the axial direction 22. For this purpose, the slide guide 52 has a head part 54, to which a U-shaped cantilever part 56 is fastened in the present example. The sealing slide 50 is mounted between the two wall units 58, 60 of the cantilever part 56. The two wall units 58, 60 do not extend over the entire length of the head part 54; rather, the two wall units 58, 60 are only present in the central region of the head part 54.

Das Kopfteil 54 kann mittels mehrerer Schrauben 62 an dem Gehäuse 12 der Sinuspumpe 10 befestig werden. Dazu besitzt das Gehäuse 12 des Sinuspumpe 10 eine Aussparung 64. Die Aussparung 64 ist im vorliegenden Beispielsfall zwischen dem Einlass 40 und dem Auslass 42 angeordnet. Die Maße der Aussparung 64 sind so gewählt, dass die Schieberstütze 52 passgenau eingeführt, fixiert und an dem Pumpengehäuse 12 verschraubt werden kann.The head part 54 can be fastened to the housing 12 of the sinus pump 10 by means of several screws 62. For this purpose, the housing 12 of the sinus pump 10 has a cutout 64. The cutout 64 is arranged between the inlet 40 and the outlet 42 in the present example. The dimensions of the recess 64 are selected such that the slide support 52 can be inserted, fixed and screwed to the pump housing 12 with a precise fit.

Die mittige Anordnung des Dichtschiebers 50 und der Schieberführung 52 zwischen den beiden Begrenzungsflächen 34, 36 des Rotorkragens 32 hat den Vorteil, das nahezu kein Transportmedium verdrängt werden muss. Dadurch wird das zu transportierende Produkt deutlich weniger beschädigt. Bei einer Umdrehung des Rotors 30 im Uhrzeigersinn entsteht - bezogen auf Fig. 2 - auf der rechten Gehäusehälfte ein Unterdruck. Dadurch kann über den Einlass 40 das zu verpumpende Material zugeführt werden. Das sich im Pumpkanal 38 befindliche Material wird durch die Drehung des Rotors 30 auf die Druckseite der Pumpe 10 geschoben; der Dichtschieber 50 wirkt dabei als Sperre, so dass das Pumpmedium über den Auslass 42 weitertransportiert werden kann. Bei weiteren Umdrehungen des Rotors 30 entsteht so eine gleichmäßige und stoßfreie Verdrängung, so dass ein schonender Transport gewährleistet werden kann.The central arrangement of the sealing slide 50 and the slide guide 52 between the two boundary surfaces 34, 36 of the rotor collar 32 has the advantage that almost no transport medium has to be displaced. This means that the product to be transported is significantly less damaged. With one revolution of the rotor 30 in a clockwise direction - in relation to Fig. 2 - A vacuum on the right half of the housing. As a result, the material to be pumped can be supplied via the inlet 40. The material located in the pump channel 38 is pushed onto the pressure side of the pump 10 by the rotation of the rotor 30; the sealing slide 50 acts as a lock, so that the pump medium can be transported on via the outlet 42. With further rotations of the rotor 30, a smooth and shock-free displacement occurs, so that a gentle transport can be guaranteed.

Die erste Ausführungsform entsprechend Fig. 1 bis 3 zeigt eine sehr einfache Ausgestaltung von Dichtschieber 50 und Schieberführung 52. In den Fig. 4 bis 7 ist eine alternative Ausführungsform von Dichtschieber 50.2 und Schieberführung 52.2 dargestellt.The first embodiment accordingly 1 to 3 shows a very simple design of sealing slide 50 and slide guide 52. In the 4 to 7 An alternative embodiment of the sealing slide 50.2 and slide guide 52.2 is shown.

Die Schieberführung 52.2 besitzt ein Kopfteil 54.2, das in seiner im Wesentlichen rechteckigen Außenkontur zwei kreisbogenförmige Einbuchtungen 70, 72 aufweist. Entsprechend würde auch die Aussparung im Pumpengehäuse eine entsprechend profilierte Außenkontur aufweisen. Durch diese Profilierung kann ein Verdrehen der Schieberführung 52.2 während des Betriebs der Pumpe 10 ausgeschlossen werden. Darüber hinaus ermöglichen es die kreisbogenförmige Einbuchten 70, 72, dass die Schieberführung 52.2 auch dann vom Gehäuse 12 entnommen werden kann, wenn an den Einlass 40 und den Auslass 42 Rohrleitungen angeschlossen sind. Somit ist keine Demontage der Sinuspumpe 12 zum Auswechseln der Schieberführung 52.2 und/oder des Dichtschiebers 50.2 erforderlich.The slide guide 52.2 has a head part 54.2 which, in its essentially rectangular outer contour, has two arcuate indentations 70, 72. Accordingly, the recess in the pump housing would also have a correspondingly profiled outer contour. This profiling prevents the slide guide 52.2 from rotating during operation of the pump 10. In addition, the circular-arc-shaped recesses 70, 72 enable the slide guide 52.2 to be removed from the housing 12 even when pipelines are connected to the inlet 40 and the outlet 42. It is therefore not necessary to dismantle the sine pump 12 to replace the slide guide 52.2 and / or the sealing slide 50.2.

Das Kopfteil 54.2 kann mittels vier Schrauben 62 an dem Pumpengehäuse befestigt werden. Von dem Kopfteil 54.2 ragen mittig zwei Wandeinheiten 58.2, 60.2 nach unten aus. Die beiden Wandeinheiten 58.2, 60.2 sind lediglich im mittleren Bereich des Kopfteils 54.2 vorhanden. Zwischen den beiden Wandeinheiten 58.2, 60.2 kann der Dichtschieber 50.2 in einem Schieberkanal 74 geführt werden. Die beiden Wandeinheiten 58.2, 60.2 besitzen im vorliegenden Beispielsfall jeweils fünf stabförmige Elemente 76, so dass beide Wandeinheiten 58.2, 60.2 mehrere Schlitze 78 aufweisen.The head part 54.2 can be fastened to the pump housing by means of four screws 62. Two protrude from the middle of the head part 54.2 Wall units 58.2, 60.2 downwards. The two wall units 58.2, 60.2 are only present in the central region of the head part 54.2. The sealing slide 50.2 can be guided in a slide channel 74 between the two wall units 58.2, 60.2. In the present example, the two wall units 58.2, 60.2 each have five rod-shaped elements 76, so that both wall units 58.2, 60.2 have a plurality of slots 78.

Im Eckbereich des Schieberkanals 74 sind jeweils Entlastungskanäle 80 ausgebildet. Die Entlastungskanäle 80 der Schieberführung 52.2 fluchten mit Entlastungskanälen 46 der Sinuspumpe 10. Dadurch kann das zu transportierende Produkt bei einer Bewegung des Dichtschiebers 50.2 in der Schieberführung 52.2 ausweichen, so dass der Dichtschieber 50.2 besonders einfach bewegt werden kann. Gleichzeitig wird das zu transportierende Produkt auf diese Weise nicht beschädigt, was insbesondere Produkten mit stückigen Anteilen wichtig ist.Relief channels 80 are formed in the corner region of the slide channel 74. The relief channels 80 of the slide guide 52.2 align with relief channels 46 of the sine pump 10. As a result, the product to be transported can move when the sealing slide 50.2 moves in the slide guide 52.2, so that the sealing slide 50.2 can be moved particularly easily. At the same time, the product to be transported is not damaged in this way, which is particularly important for products with lumpy parts.

Darüber hinaus ist am Kopfteil 54.2 der Schieberführung 52.2 eine Feder 82 vorhanden. Die Feder 82 ist etwa mittig der beiden Wandeinheiten 58.2, 60.2 vorhanden und verläuft parallel zu diesen. Der Dichtschieber 50.2 besitzt an seiner Oberseite eine entsprechende Nut 84. Durch diese Nut-Feder-Verbindung ist der Dichtschieber 50.2 gegen Verdrehen und Verbiegen gesichert.In addition, a spring 82 is present on the head part 54.2 of the slide guide 52.2. The spring 82 is present approximately in the middle of the two wall units 58.2, 60.2 and runs parallel to these. The sealing slide 50.2 has a corresponding groove 84 on its upper side. This tongue and groove connection secures the sealing slide 50.2 against twisting and bending.

Innen neben den Bohrungen 86 für die Schrauben 62 ist im Kopfteil 54.2 eine umlaufende Nut 88 vorhanden. In diese Nut 88 kann ein Dichtring, beispielsweise in O-Dichtring eingelegt werden.Inside the holes 86 for the screws 62 there is a circumferential groove 88 in the head part 54.2. A sealing ring, for example in an O-sealing ring, can be inserted into this groove 88.

Sofern die Schieberführung 52.2 von dem Pumpengehäuse 12 demontiert werden soll, soll in der Regel auch der Dichtschieber 50.2 gemeinsam mit der Schieberführung 52.2 entnommen werden können. Zu diesem Zweck ist im vorliegenden Beispielsfall an einer der beiden Wandeinheiten 58.2 ein nach innen weisender Stift 90 vorhanden. Dieser Stift 90 ragt in eine in der Außenseite des Dichtschiebers 50.2 vorhandene Nut 92. Abhängig von der Länge des Dichtschiebers 50.2 und der Länge der Wandeinheiten 58.2, 60.2 können auch mehrere Stifte 90 oder eine längere Nut vorhanden sein. Es wäre auch möglich, an beiden Wandeinheiten entsprechende Stifte oder Nute vorzusehen.If the slide guide 52.2 is to be removed from the pump housing 12, the sealing slide 50.2 should generally also be able to be removed together with the slide guide 52.2. For this purpose, an inwardly pointing pin 90 is present on one of the two wall units 58.2 in the present example. This pin 90 projects into a groove 92 provided in the outside of the sealing slide 50.2. Depending on the length of the sealing slide 50.2 and the length of the wall units 58.2, 60.2, there can also be a plurality of pins 90 or a longer groove. It would also be possible to provide corresponding pins or grooves on both wall units.

In Fig. 8 und 9 ist eine dritte Ausführungsform der Sinuspumpe 10.3 schematisch dargestellt. Die Sinuspumpe 10.3 besitzt ein Pumpengehäuse 12.3 mit einem kreisförmigen Deckel 14.3. Der Deckel 14.3 ist im vorliegenden Beispielsfall mittels Schrauben an einer Mantelwand 18.3 befestigt. Ein hohlzylindrischer Wellenträger 20.3, dessen Zylinderachse mit der Längsachse 22 der Sinuspumpe 10.3 zusammenfällt, ragt durch die Rückwand 24.3 hindurch in den Innenraum des Gehäuses 12.3. Zentral durch den Wellenträger 20.3 hindurch ragt eine Antriebswelle. An dem im Innenraum des Gehäuses 12.3 endenden Kragende der Antriebswelle ist ein Rotor 30.3 drehfest befestigt. An dem Rotor 30.3 ist ein Rotorkragen 32.3 einstückig angeformt. Dieser Rotorkragen 32.3 besitzt zwei umlaufende wellenförmige Begrenzungsflächen 34.3, 36.3. Zwischen den beiden Begrenzungsflächen 34.3, 36.3 des Rotorkragens befindet sich der Pumpkanal 38.3. Über den Pumpkanal 38.3 kann ein Medium vom Einlass 40.3 zum Auslass 42.3 der Sinuspumpe 12.3 befördert werden. Im vorliegenden Beispielsfall stehen die Längsachsen des Einlasses 40.3 und des Auslasses 42.3 rechtwinkelig aufeinander.In 8 and 9 a third embodiment of the sine pump 10.3 is shown schematically. The sine pump 10.3 has a pump housing 12.3 with a circular cover 14.3. In the present example, the cover 14.3 is fastened to a jacket wall 18.3 by means of screws. A hollow cylindrical shaft support 20.3, the cylinder axis of which coincides with the longitudinal axis 22 of the sine pump 10.3, projects through the rear wall 24.3 into the interior of the housing 12.3. A drive shaft projects centrally through the shaft support 20.3. A rotor 30.3 is fixed in a rotationally fixed manner to the collar end of the drive shaft which ends in the interior of the housing 12.3. A rotor collar 32.3 is integrally formed on the rotor 30.3. This rotor collar 32.3 has two circumferential undulating boundary surfaces 34.3, 36.3. The pump channel 38.3 is located between the two boundary surfaces 34.3, 36.3 of the rotor collar. A medium can be conveyed from the inlet 40.3 to the outlet 42.3 of the sinus pump 12.3 via the pump channel 38.3. In the present example, the longitudinal axes of the inlet 40.3 and the outlet 42.3 are at right angles to one another.

Der Pumpkanal 38.3 wird durch einen Stator 44.3 begrenzt. Durch den Stator 44.3 wird der Pumpenraum in einen Druckraum und einen Saugraum unterteilt. Der Ansaugraum und der Auslassraum sind durch einen Dichtschieber 50.3 druckmäßig voneinander getrennt. Der Dichtschieber 50.3 ist innerhalb einer Schieberführung 52.3 in axialer Richtung 22 hin und her bewegbar. Der Dichtschieber 50.3 ist zwischen den beiden Begrenzungsflächen 34.3, 36.3 angeordnet und wird durch die Bewegung der beiden Begrenzungsflächen 34.3, 36.3 bei der Rotation des Rotors 30.3 bewegt. Die Schieberführung 52.3 besitzt im vorliegenden Beispielsfall zwei Führungsnute 100, 102, die in der Innenseite des Gehäuses 12.3 eingeformt sind. Statt der Wandteile besitzt die Schieberführung 52.3 mehrere Gewindestifte 104, die durch das Gehäuse 12.3 hindurchragen und den Dichtschieber 50.3 seitlich einrahmen. Die mittige Anordnung des Dichtschiebers 50.3 zwischen den beiden Begrenzungsflächen 34.3, 36.3 des Rotorkragens 32.3 hat den Vorteil, das nahezu kein Transportmedium verdrängt werden muss. So entsteht eine gleichmäßige und stoßfreie Verdrängung, was einen schonenden und geräuscharmen Transport ermöglicht.The pump channel 38.3 is delimited by a stator 44.3. The stator 44.3 divides the pump chamber into a pressure chamber and a suction chamber. The suction space and the outlet space are separated from each other in terms of pressure by a sealing slide 50.3. The sealing slide 50.3 can be moved back and forth within a slide guide 52.3 in the axial direction 22. The sealing slide 50.3 is arranged between the two boundary surfaces 34.3, 36.3 and is moved by the movement of the two boundary surfaces 34.3, 36.3 during the rotation of the rotor 30.3. In the present example, the slide guide 52.3 has two guide grooves 100, 102 which are formed in the inside of the housing 12.3. Instead of the wall parts, the slide guide 52.3 has a plurality of setscrews 104 which pass through the housing 12.3 protrude and frame the sealing slide 50.3 sideways. The central arrangement of the sealing slide 50.3 between the two boundary surfaces 34.3, 36.3 of the rotor collar 32.3 has the advantage that almost no transport medium has to be displaced. This creates a smooth and shock-free displacement, which enables gentle and low-noise transport.

Claims (9)

  1. Sinusoidal pump (10)
    - having a pump housing (12) which has a cover (14) a rear wall (24) and a lateral wall (18) arranged between them,
    - having a rotor (30) which is co-rotationally connected to a drive shaft that can be connected to a motor drive, and which has a radially projecting rotor collar (32) rotating in a wave shape,
    - having two boundary surfaces (34, 36) of the rotor collar (32), which delimit the rotor collar (32) on both sides in the axial direction (22) and leave a pump channel (38) free between them,
    - having an inlet (40) and an outlet (42) for the pump channel (38),
    - having a sealing slide (50, 50.2) that is adjustable in the axial direction (22), rests in a sealing manner on both sides in the axial direction (22) between the two boundary surfaces (34, 36) of the rotor collar (32) and subdivides the pump channel (38) between the inlet (40) and the outlet (42),
    - having a slide guide (52, 52.2), on which the sealing slide (50, 50.2) rests in a sealing manner and can be adjusted in the axial direction (22) by means of the rotation of the rotor collar (32),
    - characterized in that
    - the pump housing (12) has a recess (64),
    - the slide guide (52, 52.2) is inserted into this recess (64) in a fixed position.
  2. Sinusoidal pump according to Claim 1,
    - characterized in that
    - the slide guide (52, 52.2) is fixed, in particular screwed, to the pump housing (12).
  3. Sinusoidal pump according to Claim 1 or 2,
    - characterized in that
    - the slide guide (52, 52.2) is inserted into the recess (64) with a precise fit.
  4. Sinusoidal pump according to one of the preceding claims,
    - characterized in that
    - the slide guide (52.2) has a slide channel (74), within which the sealing side (50.2) is displaceability mounted,
    - the sealing slide (50.2) is guided in the slide channel (52.2) via a tongue and groove connection (82, 84) .
  5. Sinusoidal pump according to Claim 4,
    - characterized in that
    - the sealing slide (50.2) has a groove (84) extending in the longitudinal direction (22) on its upper side pointing outwards,
    - the slide guide (52.2) has a tongue (82) extending in the longitudinal direction (22) on its underside pointing inwards.
  6. Sinusoidal pump according to Claim 4 or 5,
    - characterized in that
    - the slide channel (52, 52.2) has a respective wall unit (58, 58.2, 60, 60.2) on both sides, at least in some regions.
  7. Sinusoidal pump according to Claim 6,
    - characterized in that
    - the two wall units (58, 58.2, 60, 60.2) are present in the central region of the slide channel (74).
  8. Sinusoidal pump according to Claim 6 or 7,
    - characterized in that
    - the sealing slide (50.2) is guided on at least one of the two wall units (58.2) via a tongue and groove connection (90, 92).
  9. Sinusoidal pump according to one of Claims 4 to 8,
    - characterized in that
    - there are relief channels (80) in the corner region of the slide channel (74).
EP18184343.4A 2017-07-19 2018-07-19 Sinusoidal pump Active EP3431764B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017006808.9A DE102017006808A1 (en) 2017-07-19 2017-07-19 sine pump

Publications (2)

Publication Number Publication Date
EP3431764A1 EP3431764A1 (en) 2019-01-23
EP3431764B1 true EP3431764B1 (en) 2020-03-25

Family

ID=63041790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18184343.4A Active EP3431764B1 (en) 2017-07-19 2018-07-19 Sinusoidal pump

Country Status (2)

Country Link
EP (1) EP3431764B1 (en)
DE (1) DE102017006808A1 (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1172692A (en) * 1914-11-04 1916-02-22 Peter J Fanning Power mechanism.
US3095823A (en) * 1961-08-14 1963-07-02 Ronald S Brand Positive displacement pump
DE3036755A1 (en) * 1979-03-13 1981-05-07 R Tigane Rotary-piston machine
GB2075122A (en) * 1980-04-14 1981-11-11 Jayasooriya L Rotary positive-displacement fluid-machines
DE3418708A1 (en) 1983-05-21 1984-11-22 Sine Pumps N.V., Curacao, Niederländische Antillen Pump
GB2183732A (en) * 1985-12-06 1987-06-10 Charles Sejbl Sinusoidal pump/motor
DE202004000188U1 (en) 2004-01-09 2004-04-01 Sommer, Manfred Pump for viscous liquids has a profiled rotor with a slider and with an elastic seal between the slider and the pump housing
DE202004000183U1 (en) 2004-01-09 2004-04-01 Sommer, Manfred Pump for viscous fluids has a drive shaft bearing inside a hollow support and positioned inside a hollow hub mounting for the pump rotor
DE202004000184U1 (en) 2004-01-09 2004-04-01 Sommer, Manfred Pump for viscous fluids has the rear wall and outer wall of the pumping chamber lined with a material which prevents contact between the pumped fluid and the pump
DE202004000185U1 (en) 2004-01-09 2004-04-01 Sommer, Manfred Pump for viscous fluids has flat sealing surfaces on both sides of a wave shaped rotor for improved seal with the pump slider
DE202004000186U1 (en) 2004-01-09 2004-04-01 Sommer, Manfred Pump for viscous liquids has a wave shaped rotor and with seals between the stator and the pump housing
JP5180709B2 (en) * 2008-07-10 2013-04-10 株式会社神戸製鋼所 Screw compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102017006808A1 (en) 2019-01-24
EP3431764A1 (en) 2019-01-23

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