EP1400693A2 - Moineau-type pump with modular replacement unit - Google Patents

Moineau-type pump with modular replacement unit Download PDF

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Publication number
EP1400693A2
EP1400693A2 EP03020133A EP03020133A EP1400693A2 EP 1400693 A2 EP1400693 A2 EP 1400693A2 EP 03020133 A EP03020133 A EP 03020133A EP 03020133 A EP03020133 A EP 03020133A EP 1400693 A2 EP1400693 A2 EP 1400693A2
Authority
EP
European Patent Office
Prior art keywords
rotor
drive
drive shaft
stator
pump housing
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.)
Withdrawn
Application number
EP03020133A
Other languages
German (de)
French (fr)
Other versions
EP1400693A3 (en
Inventor
Reinhard Denk
Christoph Böhnisch
Michael Groth
Franz Kneidl
Thomas Ribbe
Michael Robby
Robert Kurz
Johann Kreidl
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.)
Netzsch Pumpen and Systeme GmbH
Original Assignee
Netzsch Pumpen and Systeme GmbH
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
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Application filed by Netzsch Pumpen and Systeme GmbH filed Critical Netzsch Pumpen and Systeme GmbH
Publication of EP1400693A2 publication Critical patent/EP1400693A2/en
Publication of EP1400693A3 publication Critical patent/EP1400693A3/en
Withdrawn legal-status Critical Current

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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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • 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

Definitions

  • the invention relates to an eccentric screw pump with a screw-shaped Rotor that rotates in a coiled stator chamber and a drive shaft that Connects rotor with a drive.
  • the object of the invention is therefore to reduce the assembly time when replacing rotor-stator or joint parts, especially at the customer.
  • stator is in many cases between two side flanges by means of a Tie rod assembly is clamped, it can be advantageous according to the invention if divided the pump housing and its parts using a quick release device or quick coupling are connected to each other.
  • the complete stator and part of the pump housing are designed together with the drive shaft, the joints or the flexible shaft and the Seal removed and replaced.
  • a gear e.g. parallel shaft gear
  • the gearbox has a hollow shaft.
  • the bearing in the pump housing sits in this hollow shaft sealed drive shaft for the rotor.
  • the drive shaft is through a screw axially clamped with the hollow shaft.
  • the torque is transmitted through a Shaft-hub connection e.g. a key ..
  • FIG. 1 An embodiment of the invention is shown in FIG. 1.
  • FIG. 1 shows an eccentric screw pump 10 of the Moineau type with a drive 12 and a gear 14, which in via a hollow shaft with a drive shaft 16 Connection is established.
  • the drive shaft 16 is provided with a seal 18 which prevents the ingress of Product in the area of storage 20 prevented.
  • the flexurally elastic shaft 22 and the drive shaft 16 are by a screw / shrink or adhesive connection fixed in rotation with each other.
  • the pump housing 26 has a Inlet 28 through which the product is sucked into the eccentric screw pump 10 becomes. By loosening the screw 30 and opening the quick release device 32 the entire stator 38 can be simultaneously with the end piece 34 with the rotor 36, the flexible shaft 22, the drive shaft 16 and the seal 18 as one Pull unit from pump housing 26 and drive 12 and against a new one Replace exchange unit.

Abstract

The pump (10) has a spiral rotor (36) in a looped stator chamber and a drive shaft (16) linking the rotor to a drive (12). The drive shaft is connected via a releasable connection to the drive or to a transmission (14). After release, it can be exchanged along with the rotor, stator (38), seal (18) and if necessary with part of the pump housing (26).

Description

Die Erfindung betrifft eine Exzenterschneckenpumpe mit einem schneckenförmigen Rotor der in einer gewendelten Statorkammer rotiert und einer Antriebswelle die den Rotor mit einem Antrieb verbindet.The invention relates to an eccentric screw pump with a screw-shaped Rotor that rotates in a coiled stator chamber and a drive shaft that Connects rotor with a drive.

Beim allgemein bekannten Stand der Technik entsprechend Prospekt NETZSCH The heart of your process Seiten 18 und 19 und EP 0 657 649 A1, DE 24 58 839 A1 sind die Rotoren bei Schneckenpumpen über eine Gelenkverbindung mit dem Getriebe bzw. Antrieb verbunden. Als Gelenkverbindung kommen Bolzengelenke, Zapfenkreuzgelenke, Bogenzahngelenke und Biegestäbe zum Einsatz. Beim Austausch eines Rotors oder der Gelenkverbindung sind stets zeitaufwendige Montagearbeiten zu verrichten.In the generally known state of the art according to the NETZSCH The heart of your process pages 18 and 19 and EP 0 657 649 A1, DE 24 58 839 A1 the rotors in worm pumps have an articulated connection with the gear or drive connected. Pin joints come as a joint connection, Pin universal joints, curved tooth joints and bending rods are used. At the Replacing a rotor or the articulation is always time-consuming To perform assembly work.

Aufgabe der Erfindung ist es demnach, die Montagezeit beim Austausch von Rotor-Stator- oder Gelenkteilen, insbesondere beim Kunden, zu reduzieren.The object of the invention is therefore to reduce the assembly time when replacing rotor-stator or joint parts, especially at the customer.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des Anspruchs 1 gelöst.According to the invention the object is achieved by the features of claim 1.

Vorteilhafte Weiterbildungen der Erfindung gehen aus den Merkmalen der Unteransprüche hervor.Advantageous developments of the invention result from the features of Subclaims.

Insbesondere bei Reparaturarbeiten beim und durch den Kunden ist erwünscht, den Austausch von Teilen in kürzester Zeit mit möglichst einfachen Mitteln zu bewerkstelligen. Hierzu wird erfindungsgemäß vorgeschlagen, daß die Antriebswelle über eine lösbare Verbindung in Form einer Schraube einem Klemmstück oder vergleichbaren Elementen mit dem Antrieb oder dessen zwischengeschaltetem Getriebe verbunden ist.In particular for repair work by and by the customer, it is desirable that Replacement of parts in the shortest possible time with the simplest possible means accomplish. For this purpose, it is proposed according to the invention that the drive shaft via a detachable connection in the form of a screw, a clamping piece or comparable elements with the drive or its intermediate Gearbox is connected.

Da der Stator in vielen Fällen zwischen zwei seitlichen Flanschen mittels einer Zugankeranordnung verspannt ist, kann es erfindungsgemäß von Vorteil sein, wenn das Pumpengehäuse geteilt und dessen Teile mittels einer Schnellspannvorrichtung oder Schnellkupplung miteinander verbunden sind. In dieser erfindungsgemäßen Gestaltung wird der komplette Stator und ein Teil des Pumpengehäuses zusammen mit der Antriebswelle, den Gelenken bzw. der biegeelastischen Welle und der Dichtung entfernt und ausgetauscht. Since the stator is in many cases between two side flanges by means of a Tie rod assembly is clamped, it can be advantageous according to the invention if divided the pump housing and its parts using a quick release device or quick coupling are connected to each other. In this invention The complete stator and part of the pump housing are designed together with the drive shaft, the joints or the flexible shaft and the Seal removed and replaced.

Entsprechend einer weiteren vorteilhaften Ausgestaltung der Erfindung ist der Einsatz eines Getriebes (z.B. Flachgetriebes) vorgesehen. Das Getriebe verfügt über eine Hohlwelle. In dieser Hohlwelle sitzt die im Pumpengehäuse gelagerte und abgedichtete Antriebswelle für den Rotor. Durch eine Schraube ist die Antriebswelle mit der Hohlwelle axial verspannt. Die Drehmomentübertragung erfolgt durch eine Wellen-Naben-Verbindung z.B. einer Passfeder..According to a further advantageous embodiment of the invention, the Use of a gear (e.g. parallel shaft gear) provided. The gearbox has a hollow shaft. The bearing in the pump housing sits in this hollow shaft sealed drive shaft for the rotor. The drive shaft is through a screw axially clamped with the hollow shaft. The torque is transmitted through a Shaft-hub connection e.g. a key ..

Ein Ausführungsbeispiel der Erfindung geht aus der Fig. 1 hervor.An embodiment of the invention is shown in FIG. 1.

Fig. 1 zeigt eine Exzenterschneckenpumpe 10 vom Moineau-Typ mit einem Antrieb 12 und einem Getriebe 14, das über eine Hohlwelle mit einer Antriebswelle 16 in Verbindung steht.1 shows an eccentric screw pump 10 of the Moineau type with a drive 12 and a gear 14, which in via a hollow shaft with a drive shaft 16 Connection is established.

Die Antriebswelle 16 ist mit einer Dichtung 18 versehen, die das Eindringen von Produkt in den Bereich der Lagerung 20 verhindert. Die biegeelastische Welle 22 und die Antriebswelle 16 sind durch eine Schraub-/Schrumpf- oder Klebeverbindung drehfest miteinander fixiert. Das Pumpengehäuse 26 verfügt über einen Einlaufstutzen 28 über den das Produkt in die Exzenterschneckenpumpe 10 gesaugt wird. Durch das Lösen der Schraube 30 und Öffnen der Schnellspannvorrichtung 32 läßt sich der gesamte Stator 38 gleichzeitig mit dem Endstutzen 34 mit dem Rotor 36, der biegeelastischen Welle 22, der Antriebswelle 16 und der Dichtung 18 als eine Einheit vom Pumpengehäuse 26 und Antrieb 12 abziehen und gegen eine neue Austausch-Einheit ersetzen. The drive shaft 16 is provided with a seal 18 which prevents the ingress of Product in the area of storage 20 prevented. The flexurally elastic shaft 22 and the drive shaft 16 are by a screw / shrink or adhesive connection fixed in rotation with each other. The pump housing 26 has a Inlet 28 through which the product is sucked into the eccentric screw pump 10 becomes. By loosening the screw 30 and opening the quick release device 32 the entire stator 38 can be simultaneously with the end piece 34 with the rotor 36, the flexible shaft 22, the drive shaft 16 and the seal 18 as one Pull unit from pump housing 26 and drive 12 and against a new one Replace exchange unit.

BezugsziffernlisteReferences list

1010
ExzenterschneckenpumpeCavity Pump
1212
Antriebdrive
1414
Getriebetransmission
1616
Antriebswelledrive shaft
1818
Dichtungpoetry
2020
Lagerungstorage
2222
Wellewave
2626
Pumpengehäusepump housing
2828
Einlaufstutzenflowguide
3030
Schraubescrew
3232
SchnellspannvorrichtungQuick clamping device
3434
Endstutzenend stub
3636
Rotorrotor
3838
Statorstator
4040
Zwischenrohrintermediate pipe

Claims (3)

Exzenterschneckenpumpe (10) mit einem schneckenförmigen Rotor (36), der in einer gewendelten Statorkammer rotiert und einer Antriebswelle (16), die den Rotor (36) mit einem Antrieb (12) verbindet,
dadurch gekennzeichnet, daß die Antriebswelle (16) über eine lösbare Verbindung mit einem Antrieb (12) oder einem Getriebe (14) verbunden ist und nach dem Lösen der Verbindung als Austauschelement gemeinsam mit dem Rotor (36), dem Stator (38), der Dichtung (18) und gegebenenfalls einem Teil des Pumpengehäuses (26) austauschbar ist.Eccentric screw pump (10) with a screw-shaped rotor (36) that rotates in a spiral stator chamber and a drive shaft (16) that connects the rotor (36) to a drive (12),
characterized in that the drive shaft (16) is connected via a detachable connection to a drive (12) or a gear (14) and after releasing the connection as an exchange element together with the rotor (36), the stator (38), the Seal (18) and possibly a part of the pump housing (26) is interchangeable. Exzenterschneckenpumpe nach Anspruch 1,
dadurch gekennzeichnet, daß der Stator (38) sowohl fest mit einem ersten Teil des Pumpengehäuses (26) als auch lösbar durch eine Schnellspannvorrichtung (32) mit dem zweiten Teil des Pumpengehäuses verbunden ist.Eccentric screw pump according to claim 1,
characterized in that the stator (38) is both fixedly connected to a first part of the pump housing (26) and detachably by a quick release device (32) to the second part of the pump housing. Exzenterschneckenpumpe nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß .das Getriebe (14) eine Hohlwelle aufweist mit der die Antriebswelle (16) für den Rotor (36) mit einer Schraube (30) verspannt ist.Eccentric screw pump according to claim 1 or 2,
characterized in that the gear (14) has a hollow shaft with which the drive shaft (16) for the rotor (36) is braced with a screw (30).
EP03020133A 2002-09-20 2003-09-05 Moineau-type pump with modular replacement unit Withdrawn EP1400693A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10243675A DE10243675B3 (en) 2002-09-20 2002-09-20 Eccentric screw pump with exchange unit
DE10243675 2002-09-20

Publications (2)

Publication Number Publication Date
EP1400693A2 true EP1400693A2 (en) 2004-03-24
EP1400693A3 EP1400693A3 (en) 2006-03-01

Family

ID=29796637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03020133A Withdrawn EP1400693A3 (en) 2002-09-20 2003-09-05 Moineau-type pump with modular replacement unit

Country Status (3)

Country Link
US (1) US20040057846A1 (en)
EP (1) EP1400693A3 (en)
DE (1) DE10243675B3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021549A1 (en) * 2008-08-21 2010-02-25 Agr Subsea As Outer rotor of a progressing cavity pump having an inner and an outer rotor
US8388327B2 (en) 2007-09-20 2013-03-05 Agr Subsea As Progressing cavity pump with several pump sections
US8496456B2 (en) 2008-08-21 2013-07-30 Agr Subsea As Progressive cavity pump including inner and outer rotors and a wheel gear maintaining an interrelated speed ratio
US8556603B2 (en) 2007-09-11 2013-10-15 Agr Subsea As Progressing cavity pump adapted for pumping of compressible fluids

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004040720B4 (en) * 2004-08-20 2015-11-26 Knoll Maschinenbau Gmbh Cavity Pump
JP6761980B2 (en) * 2015-02-03 2020-09-30 兵神装備株式会社 Uniaxial eccentric screw pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0777172A (en) * 1993-09-03 1995-03-20 Heishin Sobi Kk Uniaxial eccentric screw pump
JP2001271764A (en) * 2000-03-27 2001-10-05 Shin Nippon Machinery Co Ltd Single shaft eccentric screw pump
DE10022631A1 (en) * 2000-05-11 2001-11-22 Gruen Pumpen Gmbh Eccentric screw pump for medium or high viscosity fluids; has drive motor and pump mechanism connected by quick-fit connection and has eccentric screw supported in foot side of pump

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Publication number Priority date Publication date Assignee Title
US2527673A (en) * 1947-02-28 1950-10-31 Robbins & Myers Internal helical gear pump
US3324801A (en) * 1965-08-17 1967-06-13 Fernholtz Mfg Company Combined flexible seal and agitator for pumps
US3512904A (en) * 1968-05-24 1970-05-19 Clifford H Allen Progressing cavity helical pump
US3539279A (en) * 1968-09-23 1970-11-10 H A Rider & Sons Tubular pump
DE2458839A1 (en) * 1974-12-12 1976-06-16 Flux Geraete Gmbh Spiral transport pump with eccentric rotor - has drive shaft with flexible plastics coated section to accommodate sideways movement of rotor
GB2284646B (en) * 1993-12-09 1996-01-10 Mono Pumps Ltd Rotor and flexible drive shaft assembly
US5769618A (en) * 1995-09-25 1998-06-23 Heishin Sobi Kabushiki Kaisha Uniaxial eccentric screw pump having a flexible plastic shaft
DE19804259A1 (en) * 1998-02-04 1999-08-12 Artemis Kautschuk Kunststoff Elastomer stator for eccentric screw pumps
DE19813999C1 (en) * 1998-03-28 1999-11-25 Seepex Seeberger Gmbh & Co Eccentric screw pump
EP0953769B1 (en) * 1998-04-27 2004-01-07 Allweiler AG Eccentric screw pump
DE10118785A1 (en) * 2001-04-17 2002-10-24 Viscotec Pumpen Und Dosiertech Eccentric screw conveyor pump has at least one screw conveyor in region of intermediate cavity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0777172A (en) * 1993-09-03 1995-03-20 Heishin Sobi Kk Uniaxial eccentric screw pump
JP2001271764A (en) * 2000-03-27 2001-10-05 Shin Nippon Machinery Co Ltd Single shaft eccentric screw pump
DE10022631A1 (en) * 2000-05-11 2001-11-22 Gruen Pumpen Gmbh Eccentric screw pump for medium or high viscosity fluids; has drive motor and pump mechanism connected by quick-fit connection and has eccentric screw supported in foot side of pump

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 1995, Nr. 06, 31. Juli 1995 (1995-07-31) -& JP 07 077172 A (HEISHIN SOBI KK), 20. März 1995 (1995-03-20) *
PATENT ABSTRACTS OF JAPAN Bd. 2002, Nr. 02, 2. April 2002 (2002-04-02) -& JP 2001 271764 A (SHIN NIPPON MACHINERY CO LTD), 5. Oktober 2001 (2001-10-05) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8556603B2 (en) 2007-09-11 2013-10-15 Agr Subsea As Progressing cavity pump adapted for pumping of compressible fluids
US8388327B2 (en) 2007-09-20 2013-03-05 Agr Subsea As Progressing cavity pump with several pump sections
WO2010021549A1 (en) * 2008-08-21 2010-02-25 Agr Subsea As Outer rotor of a progressing cavity pump having an inner and an outer rotor
NO329714B1 (en) * 2008-08-21 2010-12-06 Agr Subsea As External rotor in eccentric screw pump with an inner and an outer rotor
US8496456B2 (en) 2008-08-21 2013-07-30 Agr Subsea As Progressive cavity pump including inner and outer rotors and a wheel gear maintaining an interrelated speed ratio
US8613608B2 (en) 2008-08-21 2013-12-24 Agr Subsea As Progressive cavity pump having an inner rotor, an outer rotor, and transition end piece

Also Published As

Publication number Publication date
EP1400693A3 (en) 2006-03-01
DE10243675B3 (en) 2004-01-29
US20040057846A1 (en) 2004-03-25

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