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EP3239525A1 - Dual spindle helical spindle pump with a single-entry design - Google Patents

Dual spindle helical spindle pump with a single-entry design Download PDF

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Publication number
EP3239525A1
EP3239525A1 EP17172594.8A EP17172594A EP3239525A1 EP 3239525 A1 EP3239525 A1 EP 3239525A1 EP 17172594 A EP17172594 A EP 17172594A EP 3239525 A1 EP3239525 A1 EP 3239525A1
Authority
EP
European Patent Office
Prior art keywords
pump
section
mixing
spindle
shafts
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
Application number
EP17172594.8A
Other languages
German (de)
French (fr)
Other versions
EP3239525B1 (en
Inventor
Hans Jung
Weshen Christov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jung Geraetebau GmbH and Co
Original Assignee
Jung Geraetebau GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jung Geraetebau GmbH and Co filed Critical Jung Geraetebau GmbH and Co
Publication of EP3239525A1 publication Critical patent/EP3239525A1/en
Application granted granted Critical
Publication of EP3239525B1 publication Critical patent/EP3239525B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • 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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F01C21/02—Arrangements of bearings
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
    • F04C13/004—Pumps for particular liquids for homogeneous viscous liquids with means for fluidising or diluting the material being pumped
    • 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
    • F04C2210/00—Fluid
    • F04C2210/24—Fluid mixed, e.g. two-phase fluid
    • 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
    • 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
    • F04C2240/30—Casings or housings
    • 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
    • F04C2240/50—Bearings
    • F04C2240/51—Bearings for cantilever assemblies
    • 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
    • F04C2280/00—Arrangements for preventing or removing deposits or corrosion
    • F04C2280/02—Preventing solid deposits in pumps, e.g. in vacuum pumps with chemical vapour deposition [CVD] processes

Definitions

  • the invention relates to a two-spindle screw pump in einflutiger construction with a pump housing having a pump section, a bearing portion and a gear portion having a gear housing, wherein the bearing portion and the pump portion are designed separately, with a conveyor housing part as part of the pump section in which two Shafts arranged conveying screws are provided, wherein the shafts are mounted in the bearing portion (outer bearing) and extend into the gear portion.
  • Such a pump structure is known from the DE 10 2012 001 700 A1 , These pumps are characterized in particular by a product-friendly operation and an associated low wear.
  • the disclosed screw pump is provided between the pump section and bearing section with mechanical seals. As a result, in particular a reversible promotion is possible. As a result, the mechanical seal is located at the inlet or outlet of the pump.
  • the conveying screws are located in the pump housing within the pump section. They are enclosed by the conveyor housing section and together form delivery chambers.
  • the conveyor screws are mounted on the shafts that terminate in a gearbox section. On the shafts gear wheels are arranged in the transmission section, by means of which the shafts are rotationally coupled.
  • the conveyor screws are arranged so that they are engaged. They each have a corresponding pitch and a corresponding width of the screw threads. Between the screw threads are the delivery chambers. During the rotation of the shafts and thus of the conveying screws, the medium to be pumped is displaced in these delivery chambers from the inlet to the outlet.
  • This type of screw pump is often used in a circuit where powder is metered into a carrier liquid. By circulating the liquid / powder mixture, a homogeneous fluid is generated after a certain time.
  • the object of the invention is to improve the aforementioned pump to the effect that such particle formation is avoided.
  • the pump housing has a mixer section which is connected to the pump section, that a mixer housing part is provided, in which the shafts extend, and in that mixing elements are provided on the shafts.
  • the mixing elements By providing the mixing elements directly inside the pump, it is possible to dispense upstream additional elements. Furthermore, the particle formation is prevented in a simple manner. During the rotation of the mixing elements, the inflowing fluid is additionally sheared and swirled. The lumps are destroyed before entering the conveyor screw and facilitates the homogenization
  • the mixing element is an agitator. This represents a particularly simple embodiment of the mixing element according to the invention.
  • a further teaching of the invention provides that the mixing element has at least one mixing blade, preferably two, three, four or more mixing blades. Another lesson The invention provides that the mixing vanes of a mixing element are arranged on a radial plane with respect to the respective shaft. A further teaching of the invention provides that the at least one mixing vanes first shaft is axially offset from the at least one mixing vanes of the second shaft. As a result, the introduction of the shear forces in the liquid is achieved particularly easily.
  • Another teaching of the invention provides that the mixing elements are arranged so that a shear movement can be generated in the medium to be pumped.
  • Fig. 1 shows a sectional view of a spindle pump 10 according to the invention.
  • the spindle pump 10 has a housing 11 which has a pump section 12 with a conveyor housing part 13, a mixer section 14 with a mixer housing part 15, a bearing section 16 and a gear section 17.
  • the sections are spatially separated, with a hydraulic separation between the pump section 12 in connection with the mixer section 14 and the bearing section 16, or the gear section 17, is provided.
  • bearing section 16 and pump section 12 the separation is effected by a mechanical seal 42nd
  • the spindle pump 10 includes a driven shaft 22 and a driven shaft 23.
  • a feed screw 24 and on the driven shaft 23 a feed screw 25 is arranged, which are engaged.
  • the conveying screws 24, 25 are each located in a corresponding bore 26, 27 in the conveyor housing part 13.
  • a mixing element 18 On the driven shaft 22 is a mixing element 18 and on the driven shaft 23, a mixing element 19 is arranged.
  • the mixing elements 18, 19 each have two mixing blades 20.
  • the respective mixing element 18, 19 is locked with a fastening element 21 with respect to the conveyor screw 24, 25 on the shafts 22, 23.
  • the shafts 22, 23 are mounted with needle bearings 30 and roller bearings 31.
  • the gear portion 17 has a gear room 32 into which the shaft ends 33, 34 of the shafts 22, 23 extend.
  • On the driven shaft 22 is a gear 36.
  • On the driven shaft 23, a gear 37 is arranged. The teeth of the gears 36, 37 are meshingly engaged.
  • the gear chamber 32 has an opening 38 which is closed by a cover 39. Through the opening 38 through the backlash of the conveyor screws 24, 25 can be adjusted.
  • the mixing element 18 of the driven shaft 22 has two mixing blades 20 arranged opposite one another. These are provided on a first radial plane 28.
  • the mixing element 19 of the driven shaft 23 has two mixing blades 20 arranged opposite one another. These are provided on a second radial plane 29.
  • the mixing vanes 20 have a length such that during the rotation of the outer ends 35 of the mixing vanes 20, the resulting peripheral circle 40 is designed so that in a plan view, as in Fig. 2 is shown, the circles intersect. As a result, a particularly good shearing effect is generated in the liquid.
  • the mixing vanes 20 are arranged offset on the base body 41 of the mixing elements 18, 19 axially forward or axially rearward viewed from the center of the main body 41 from.
  • the base bodies are designed such that they can be placed on the shafts 22, 23 in both directions, so that only one mixing element 18, 19 has to be manufactured, which is then arranged on the shafts 22, 23 the mixing vanes 20 are located on the first and second radial planes 28, 29, respectively.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

Die Erfindung betrifft eine zweispindelige Schraubenspindelpumpe (10) in einflutiger Bauweise mit einem Pumpengehäuse (11), das einen Pumpenabschnitt (12), einen Lagerabschnitt (16) und einen Getriebeabschnitt (17) mit einem Getrieberaum (32) aufweist, wobei der Lagerabschnitt (16) und der Pumpenabschnitt (12) getrennt voneinander ausgeführt sind, mit einem Fördergehäuseteil (13) als Bestandteil des Pumpenabschnitts (12), in dem zwei auf Wellen (22, 23) angeordnete Förderschrauben (24, 25) vorgesehen sind, wobei die Wellen (22, 23) im Lagerabschnitt (16) gelagert sind (Außenlagerung) und sich in den Getriebeabschnitt (17) erstrecken. Aufgabe der Erfindung ist es, die vorgenannte Pumpe (10) dahingehend zu verbessern, dass eine Partikelbildung vermieden wird. Gelöst wird die Aufgabe dadurch, dass das Pumpengehäuse (11) einen Mischerabschnitt (14) aufweist, der mit dem Pumpenabschnitt (12) verbunden ist, dass ein Mischergehäuseteil (15) vorgesehen ist, in den sich die Wellen (22, 23) erstrecken, und dass auf den Wellen (22, 23) Mischelemente (18, 19) vorgesehen sind.The invention relates to a two-spindle screw pump (10) of single-flow construction with a pump housing (11) having a pump section (12), a bearing section (16) and a gear section (17) with a gear compartment (32), the bearing section (16 ) and the pump section (12) are designed separately from one another, with a delivery housing part (13) as part of the pump section (12), in which two on a shafts (22, 23) arranged conveying screws (24, 25) are provided, the waves ( 22, 23) are mounted in the bearing section (16) (outer bearing) and extend into the gear section (17). The object of the invention is to improve the aforementioned pump (10) to the extent that particle formation is avoided. The object is achieved in that the pump housing (11) has a mixer section (14) which is connected to the pump section (12), that a mixer housing part (15) is provided, in which the shafts (22, 23) extend, and that mixing elements (18, 19) are provided on the shafts (22, 23).

Description

Die Erfindung betrifft eine zweispindelige Schraubenspindelpumpe in einflutiger Bauweise mit einem Pumpengehäuse, das einen Pumpenabschnitt, einen Lagerabschnitt und einen Getriebeabschnitt mit einem Getrieberaum aufweist, wobei der Lagerabschnitt und der Pumpenabschnitt getrennt voneinander ausgeführt sind, mit einem Fördergehäuseteil als Bestandteil des Pumpenabschnitts, in dem zwei auf Wellen angeordnete Förderschrauben vorgesehen sind, wobei die Wellen im Lagerabschnitt gelagert sind (Außenlagerung) und sich in den Getriebeabschnitt erstrecken.The invention relates to a two-spindle screw pump in einflutiger construction with a pump housing having a pump section, a bearing portion and a gear portion having a gear housing, wherein the bearing portion and the pump portion are designed separately, with a conveyor housing part as part of the pump section in which two Shafts arranged conveying screws are provided, wherein the shafts are mounted in the bearing portion (outer bearing) and extend into the gear portion.

Ein solcher Pumpenaufbau ist bekannt aus der DE 10 2012 001 700 A1 . Diese Pumpen zeichnen sich insbesondere durch einen produktschonenden Betrieb und eine damit einhergehende Verschleißarmut aus. Die offenbarte Schraubenspindelpumpe ist zwischen Pumpenabschnitt und Lagerabschnitt mit Gleitringdichtungen versehen. Dadurch wird insbesondere eine reversible Förderung möglich. Hierdurch liegt die Gleitringdichtung am Eintritt oder am Austritt der Pumpe. Die Förderschrauben befinden sich im Pumpengehäuse innerhalb des Pumpenabschnitts. Sie werden umschlossen vom Fördergehäuseteil und bilden zusammen Förderkammern. Die Förderschrauben sind auf den Wellen angebracht, die in einem Getriebeabschnitt enden. Auf den Wellen sind im Getriebeabschnitt Zahnräder angeordnet, mittels derer die Wellen drehgekoppelt sind.Such a pump structure is known from the DE 10 2012 001 700 A1 , These pumps are characterized in particular by a product-friendly operation and an associated low wear. The disclosed screw pump is provided between the pump section and bearing section with mechanical seals. As a result, in particular a reversible promotion is possible. As a result, the mechanical seal is located at the inlet or outlet of the pump. The conveying screws are located in the pump housing within the pump section. They are enclosed by the conveyor housing section and together form delivery chambers. The conveyor screws are mounted on the shafts that terminate in a gearbox section. On the shafts gear wheels are arranged in the transmission section, by means of which the shafts are rotationally coupled.

Die Förderschrauben sind so angeordnet, dass sie sich im Eingriff befinden. Sie weisen jeweils eine korrespondierende Steigung und eine korrespondierende Breite der Schraubengänge auf. Zwischen den Schraubengängen befinden sich die Förderkammern. Während der Rotation der Wellen und damit der Förderschrauben wird das zu verpumpende Medium in diesen Förderkammern vom Eintritt zum Austritt verschoben.The conveyor screws are arranged so that they are engaged. They each have a corresponding pitch and a corresponding width of the screw threads. Between the screw threads are the delivery chambers. During the rotation of the shafts and thus of the conveying screws, the medium to be pumped is displaced in these delivery chambers from the inlet to the outlet.

Dieser Art von Schraubenspindelpumpe wird häufig in einem Kreislauf eingesetzt, wo Pulver in einer Trägerflüssigkeit ein dosiert wird. Durch das Zirkulieren des Flüssigkeit/Pulver-Gemisches wird nach einer bestimmten Zeit ein homogenes Fluid erzeugt.This type of screw pump is often used in a circuit where powder is metered into a carrier liquid. By circulating the liquid / powder mixture, a homogeneous fluid is generated after a certain time.

Bei dieser Art von Pumpe besteht eine Schwierigkeit darin, dass es bei solch einem Einsatz während des Prozesses zu einer Partikelbildung kommen kann, wenn die Umsetzung des Pulvers in der Flüssigkeit nicht ausreichend erfolgt, was entweder die Prozessdauer verlängert oder schlimmstenfalls zum Blockieren der Pumpe durch die festen ungelösten Partikel führen kann.One difficulty with this type of pump is that such use can result in particle formation during the process when the reaction of the powder in the liquid is insufficient, either prolonging the process time or, at worst, blocking the pump can lead to solid undissolved particles.

Aufgabe der Erfindung ist es, die vorgenannte Pumpe dahingehend zu verbessern, dass eine solche Partikelbildung vermieden wird.The object of the invention is to improve the aforementioned pump to the effect that such particle formation is avoided.

Gelöst wird die Aufgabe dadurch, dass das Pumpengehäuse einen Mischerabschnitt aufweist, der mit dem Pumpenabschnitt verbunden ist, dass ein Mischergehäuseteil vorgesehen ist, in den sich die Wellen erstrecken, und dass auf den Wellen Mischelemente vorgesehen sind.The object is achieved in that the pump housing has a mixer section which is connected to the pump section, that a mixer housing part is provided, in which the shafts extend, and in that mixing elements are provided on the shafts.

Durch das Vorsehen der Mischelemente direkt innerhalb der Pumpe wird es möglich, vorgeschaltete Zusatzelemente zu verzichten. Weiterhin wird auf einfache Weise die Partikelbildung unterbunden. Während der Rotation der Mischelemente wird das einströmende Fluid zusätzlich geschert und verwirbelt. Dabei werden die Klumpen vor Eintreten in die Förderschraube zerstört und die Homogenisierung erleichtertBy providing the mixing elements directly inside the pump, it is possible to dispense upstream additional elements. Furthermore, the particle formation is prevented in a simple manner. During the rotation of the mixing elements, the inflowing fluid is additionally sheared and swirled. The lumps are destroyed before entering the conveyor screw and facilitates the homogenization

Eine weitere Lehre der Erfindung sieht vor, dass es sich bei dem Mischelement um ein Rührwerk handelt. Dieses stellt eine besonders einfache Ausführung des erfindungsgemäßen Mischelements dar.Another teaching of the invention provides that the mixing element is an agitator. This represents a particularly simple embodiment of the mixing element according to the invention.

Eine weitere Lehre der Erfindung sieht vor, dass das Mischelement wenigstens einen Mischflügel, bevorzugt zwei, drei, vier oder mehr Mischflügel aufweist. Eine weitere Lehre der Erfindung sieht vor, dass die Mischflügel eines Mischelements auf einer radialen Ebene im Bezug auf die jeweilige Welle angeordnet sind Eine weitere Lehre der Erfindung sieht vor, dass der wenigstens eine Mischflügel ersten Welle axial versetzt gegenüber dem wenigstens einen Mischflügel der zweiten Welle angeordnet ist. Hierdurch wird das Einleiten der Scherkräfte in die Flüssigkeit besonders einfach erreicht.A further teaching of the invention provides that the mixing element has at least one mixing blade, preferably two, three, four or more mixing blades. Another lesson The invention provides that the mixing vanes of a mixing element are arranged on a radial plane with respect to the respective shaft. A further teaching of the invention provides that the at least one mixing vanes first shaft is axially offset from the at least one mixing vanes of the second shaft. As a result, the introduction of the shear forces in the liquid is achieved particularly easily.

Eine weitere Lehre der Erfindung sieht vor, dass die Mischelemente so angeordnet sind, dass im zu pumpenden Medium eine Scherbewegung erzeugbar ist.Another teaching of the invention provides that the mixing elements are arranged so that a shear movement can be generated in the medium to be pumped.

Nachfolgend wird die Erfindung anhand eines Ausführungsbeispiels in Verbindung mit einer Zeichnung näher erläutert. Dabei zeigen:

Fig. 1
eine Schnittansicht einer erfindungsgemäßen Pumpe, und
Fig. 2
eine räumliche Stirnansicht zu Fig. 1.
The invention will be explained in more detail with reference to an embodiment in conjunction with a drawing. Showing:
Fig. 1
a sectional view of a pump according to the invention, and
Fig. 2
a spatial front view too Fig. 1 ,

Fig. 1 zeigt eine Schnittansicht einer erfindungsgemäßen Spindelpumpe 10. Die Spindelpumpe 10 weist ein Gehäuse 11 auf, das einen Pumpenabschnitt 12 mit einem Fördergehäuseteil 13, einem Mischerabschnitt 14 mit einem Mischergehäuseteil 15, einem Lagerabschnitt 16 und einem Getriebeabschnitt 17 aufweist. Die Abschnitte sind räumlich voneinander getrennt, wobei auch eine hydraulische Trennung zwischen dem Pumpenabschnitt 12 in Verbindung mit dem Mischerabschnitt 14 und dem Lagerabschnitt 16, beziehungsweise dem Getriebeabschnitt 17, vorgesehen ist. Zwischen Lagerabschnitt 16 und Pumpenabschnitt 12 erfolgt die Trennung durch eine Gleitringdichtung 42. Fig. 1 shows a sectional view of a spindle pump 10 according to the invention. The spindle pump 10 has a housing 11 which has a pump section 12 with a conveyor housing part 13, a mixer section 14 with a mixer housing part 15, a bearing section 16 and a gear section 17. The sections are spatially separated, with a hydraulic separation between the pump section 12 in connection with the mixer section 14 and the bearing section 16, or the gear section 17, is provided. Between bearing section 16 and pump section 12, the separation is effected by a mechanical seal 42nd

Die Spindelpumpe 10 umfasst eine angetriebene Welle 22 und eine getriebene Welle 23. An der angetriebenen Welle 22 ist eine Förderschraube 24 und an der getriebenen Welle 23 ist eine Förderschraube 25 angeordnet, die sich im Eingriff befinden. Die Förderschrauben 24, 25 befinden sich jeweils in einer korrespondierenden Bohrung 26, 27 im Fördergehäuseteil 13.The spindle pump 10 includes a driven shaft 22 and a driven shaft 23. On the driven shaft 22 is a feed screw 24 and on the driven shaft 23, a feed screw 25 is arranged, which are engaged. The conveying screws 24, 25 are each located in a corresponding bore 26, 27 in the conveyor housing part 13.

An der angetriebenen Welle 22 ist ein Mischelement 18 und an der getriebenen Welle 23 ist eine Mischelement 19 angeordnet. Die Mischelemente 18, 19 weisen jeweils zwei Mischflügel 20 auf. Das jeweilige Mischelement 18, 19 wird mit einem Befestigungselement 21 gegenüber der Förderschraube 24, 25 auf den Wellen 22, 23 arretiert.On the driven shaft 22 is a mixing element 18 and on the driven shaft 23, a mixing element 19 is arranged. The mixing elements 18, 19 each have two mixing blades 20. The respective mixing element 18, 19 is locked with a fastening element 21 with respect to the conveyor screw 24, 25 on the shafts 22, 23.

Im Lagerabschnitt 16 sind die Wellen 22, 23 mit Nadellagern 30 und Rollenlagern 31 gelagert. Der Getriebeabschnitt 17 weist einen Getrieberaum 32 auf, in den sich die Wellenenden 33, 34 der Wellen 22, 23 erstrecken .Auf der angetriebenen Welle 22 befindet sich ein Zahnrad 36. Auf der getriebenen Welle 23 ist ein Zahnrad 37 angeordnet. Die Zähne der Zahnräder 36, 37 befinden sich kämmend im Eingriff.In the bearing section 16, the shafts 22, 23 are mounted with needle bearings 30 and roller bearings 31. The gear portion 17 has a gear room 32 into which the shaft ends 33, 34 of the shafts 22, 23 extend. On the driven shaft 22 is a gear 36. On the driven shaft 23, a gear 37 is arranged. The teeth of the gears 36, 37 are meshingly engaged.

Der Getrieberaum 32 weist eine Öffnung 38 auf, die mit einem Deckel 39 verschlossen ist. Durch die Öffnung 38 hindurch lässt sich das Flankenspiel der Förderschrauben 24, 25 einstellen.The gear chamber 32 has an opening 38 which is closed by a cover 39. Through the opening 38 through the backlash of the conveyor screws 24, 25 can be adjusted.

Das Mischelement 18 der angetriebenen Welle 22 weist zwei gegenüber angeordnete Mischflügel 20 auf. Diese sind auf einer ersten radialen Ebene 28 vorgesehen. Das Mischelement 19 der getriebenen Welle 23 weist zwei gegenüber angeordnete Mischflügel 20 auf. Diese sind auf einer zweiten radialen Ebene 29 vorgesehen. Die Mischflügel 20 weisen dabei eine Länge auf, so dass bei der Rotation der äußeren Enden 35 der Mischflügel 20 der entstehende Umfangskreis 40 so ausgeführt ist, dass bei einer Draufsicht, wie in Fig. 2 dargestellt ist, sich die Kreise schneiden. Hierdurch wird eine besonders gute Scherwirkung in der Flüssigkeit erzeugt. Die Mischflügel 20 sind dabei auf dem Grundkörper 41 der Mischelemente 18, 19 axial nach vorne beziehungsweise axial nach hinten von der Mitte des Grundkörpers 41 aus gesehen versetzt angeordnet. Hierbei ist bevorzugt, dass die Grundkörper so ausgeführt sind, dass sie in beide Richtungen auf die Wellen 22, 23 aufgesetzt werden können, so dass nur ein Mischelement 18, 19 gefertigt werden muss, das dann so auf den Wellen 22, 23 angeordnet wird, dass sich die Mischflügel 20 auf der ersten beziehungsweise zweiten radialen Ebene 28, 29 befinden. Bezugszeichenliste: 10 Spindelpumpe 39 Deckel 11 Gehäuse 40 Umfangskreis 12 Pumpenabschnitt 41 Grundkörper 13 Fördergehäuseteil 42 Gleitringdichtung 14 Mischerabschnitt 15 Mischergehäuseteil 16 Lagerabschnitt 17 Getriebeabschnitt 18 Mischelement 19 Mischelement 20 Mischflügel 21 Befestigungselement 22 angetriebene Welle 23 getriebene Welle 24 Förderschraube 25 Förderschraube 26 Bohrung 27 Bohrung 28 erste Ebene 29 zweite Ebene 30 Nadellager 31 Rollenlager 32 Getrieberaum 33 Wellenende 34 Wellenende 35 Äußeres Ende 36 Zahnrad 37 Zahnrad 38 Öffnung The mixing element 18 of the driven shaft 22 has two mixing blades 20 arranged opposite one another. These are provided on a first radial plane 28. The mixing element 19 of the driven shaft 23 has two mixing blades 20 arranged opposite one another. These are provided on a second radial plane 29. The mixing vanes 20 have a length such that during the rotation of the outer ends 35 of the mixing vanes 20, the resulting peripheral circle 40 is designed so that in a plan view, as in Fig. 2 is shown, the circles intersect. As a result, a particularly good shearing effect is generated in the liquid. The mixing vanes 20 are arranged offset on the base body 41 of the mixing elements 18, 19 axially forward or axially rearward viewed from the center of the main body 41 from. In this case, it is preferred that the base bodies are designed such that they can be placed on the shafts 22, 23 in both directions, so that only one mixing element 18, 19 has to be manufactured, which is then arranged on the shafts 22, 23 the mixing vanes 20 are located on the first and second radial planes 28, 29, respectively. <B> LIST OF REFERENCES: </ b> 10 screw pump 39 cover 11 casing 40 peripheral circle 12 pump section 41 body 13 Conveyor housing part 42 Mechanical seal 14 mixer section 15 Mixer housing part 16 bearing section 17 gear section 18 mixing element 19 mixing element 20 mixing blades 21 fastener 22 driven shaft 23 driven wave 24 feed screw 25 feed screw 26 drilling 27 drilling 28 first floor 29 second level 30 needle roller bearings 31 roller bearing 32 gear compartment 33 shaft end 34 shaft end 35 Outer end 36 gear 37 gear 38 opening

Claims (8)

Zweispindelige Schraubenspindelpumpe in einflutiger Bauweise mit einem Pumpengehäuse (11), das einen Pumpenabschnitt (12), einen Lagerabschnitt (16) und einen Getriebeabschnitt (17) mit einem Getrieberaum (32) aufweist, wobei der Lagerabschnitt (16) und der Pumpenabschnitt (12) getrennt voneinander ausgeführt sind, mit einem Fördergehäuseteil (13) als Bestandteil des Pumpenabschnitts (12), in dem zwei auf Wellen (22, 23) angeordnete Förderschrauben (24, 25) vorgesehen sind, wobei die Wellen (22, 23) im Lagerabschnitt (16) gelagert sind (Außenlagerung) und sich in den Getriebeabschnitt (17) erstrecken, dadurch gekennzeichnet, dass das Pumpengehäuse (12) einen Mischerabschnitt (14) aufweist, der mit dem Pumpenabschnitt (12) verbunden ist, dass ein Mischergehäuseteil (15) vorgesehen ist, in den sich die Wellen (22, 23) erstrecken, und dass auf den Wellen (22, 23) Mischelemente (18, 19) vorgesehen sind.A single-spindle, single-spindle screw pump comprising a pump housing (11) having a pump section (12), a bearing section (16) and a gear section (17) with a gear compartment (32), the bearing section (16) and the pump section (12) are carried out separately from each other, with a conveyor housing part (13) as part of the pump section (12) in which two on waves (22, 23) arranged conveying screws (24, 25) are provided, wherein the shafts (22, 23) in the bearing section ( 16) are mounted (outer bearing) and extend into the gear section (17), characterized in that the pump housing (12) has a mixer section (14) which is connected to the pump section (12), that a mixer housing part (15) is provided is, in which the shafts (22, 23) extend, and that on the shafts (22, 23) mixing elements (18, 19) are provided. Spindelpumpe nach Anspruch 1, dadurch gekennzeichnet, dass es sich bei dem Mischelement (18, 19) um ein Rührwerk handelt.Spindle pump according to claim 1, characterized in that the mixing element (18, 19) is an agitator. Spindelpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Mischelement (18, 19) wenigstens einen Mischflügel (20), bevorzugt zwei, drei, vier oder mehr Mischflügel (20) aufweist.Spindle pump according to claim 1 or 2, characterized in that the mixing element (18, 19) has at least one mixing blade (20), preferably two, three, four or more mixing vanes (20). Spindelpumpe nach Anspruch 3, dadurch gekennzeichnet, dass die Mischflügel (20) eines Mischelements (18, 19) auf einer radialen Ebene (28, 29) im Bezug auf die jeweilige Welle (22, 23) angeordnet sind.Spindle pump according to claim 3, characterized in that the mixing vanes (20) of a mixing element (18, 19) on a radial plane (28, 29) with respect to the respective shaft (22, 23) are arranged. Spindelpumpe nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der wenigstens eine Mischflügel (20) der ersten Welle (22) axial versetzt gegenüber dem wenigstens einen Mischflügel (20) der zweiten Welle (23) angeordnet ist.Rotor pump according to claim 3 or 4, characterized in that the at least one mixing vane (20) of the first shaft (22) axially offset from the at least one mixing vane (20) of the second shaft (23) is arranged. Spindelpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Mischelemente (18, 19) so angeordnet sind, dass im zu pumpenden Medium eine Scherbewegung erzeugbar ist.Spindle pump according to one of claims 1 to 5, characterized in that the mixing elements (18, 19) are arranged so that a shear movement can be generated in the medium to be pumped. Spindelpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Mischelemente (18, 19) so angeordnet sind, dass im zu pumpenden Medium eine Scherbewegung erzeugbar ist, ohne dabei das Medium in Förderrichtung der Pumpe durch die Mischelemente fortzubewegen.Spindle pump according to one of claims 1 to 5, characterized in that the mixing elements (18, 19) are arranged so that in the medium to be pumped, a shearing motion can be generated without moving the medium in the conveying direction of the pump through the mixing elements. Spindelpumpe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Wellen (22, 23) einseitig im Lagerabschnitt (16) gelagert sind.Spindle pump according to one of claims 1 to 7, characterized in that the shafts (22, 23) are mounted on one side in the bearing section (16).
EP17172594.8A 2014-02-24 2015-01-26 Dual spindle helical spindle pump with a single-entry design Active EP3239525B1 (en)

Applications Claiming Priority (2)

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DE102014002395.8A DE102014002395A1 (en) 2014-02-24 2014-02-24 Two-spindle screw pump in single-entry design
EP15000217.8A EP2910784B1 (en) 2014-02-24 2015-01-26 Dual spindle helical spindle pump with a single-entry design

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EP15000217.8A Division-Into EP2910784B1 (en) 2014-02-24 2015-01-26 Dual spindle helical spindle pump with a single-entry design

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DE102016100959A1 (en) * 2016-01-20 2017-07-20 FRISTAM Pumpen Schaumburg GmbH Rotating pump and locking plate
DE102018116772B3 (en) * 2018-07-11 2019-11-07 Netzsch Pumpen & Systeme Gmbh Screw pump and method of servicing such a screw pump
IT201800009944A1 (en) 2018-10-31 2020-05-01 Nova Rotors Srl "VOLUMETRIC PUMP"
WO2021161067A1 (en) 2020-02-12 2021-08-19 Nova Rotors Srl Positive displacement pump
DE102022213154A1 (en) 2022-12-06 2024-06-06 Vitesco Technologies GmbH Grinding wheel, method for grinding a running spindle, running spindle, method for producing a spindle pump stage and spindle pump stage
DE102023207431A1 (en) 2023-08-03 2025-02-06 Vitesco Technologies GmbH Grinding wheel, method for grinding a drive spindle, drive spindle, method for producing a spindle pump stage and spindle pump stage
CN120312588B (en) * 2025-06-16 2025-09-19 黄山众拓工业泵制造有限公司 A chemical combination screw pump and its use method

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US3057665A (en) * 1960-06-24 1962-10-09 Warren Pumps Inc Pump
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JP2005054691A (en) * 2003-08-05 2005-03-03 Futsuko Kinzoku Kogyo Kk Two-shaft screw pump
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DE102012001700A1 (en) * 2012-01-31 2013-08-01 Jung & Co. Gerätebau GmbH Two-spindle screw pump in single-entry design

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DE102014002395A1 (en) 2015-08-27
EP3239525B1 (en) 2018-04-25
EP2910784B1 (en) 2017-10-11
EP2910784A1 (en) 2015-08-26
DE202014010877U1 (en) 2017-01-02

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