EP1496257A3 - Screw rotor pump - Google Patents

Screw rotor pump Download PDF

Info

Publication number
EP1496257A3
EP1496257A3 EP04012939A EP04012939A EP1496257A3 EP 1496257 A3 EP1496257 A3 EP 1496257A3 EP 04012939 A EP04012939 A EP 04012939A EP 04012939 A EP04012939 A EP 04012939A EP 1496257 A3 EP1496257 A3 EP 1496257A3
Authority
EP
European Patent Office
Prior art keywords
spindles
elastic coating
screw rotor
rotor pump
spindle
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
EP04012939A
Other languages
German (de)
French (fr)
Other versions
EP1496257A2 (en
EP1496257B1 (en
Inventor
Helmut Engelmann
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.)
Allweiler GmbH
Original Assignee
Allweiler AG
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 Allweiler AG filed Critical Allweiler AG
Publication of EP1496257A2 publication Critical patent/EP1496257A2/en
Publication of EP1496257A3 publication Critical patent/EP1496257A3/en
Application granted granted Critical
Publication of EP1496257B1 publication Critical patent/EP1496257B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04C2/165—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 having more than two rotary pistons with parallel axes
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/91—Coating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/02—Rubber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Screw Conveyors (AREA)

Abstract

The screw spindle pump has a drive spindle flanked by working spindles (30), whereby the turns (13,33) of the spindles are in contact. The spindles are provided at least partially with an elastic coating (40) which may consist of an elastomer or may be vulcanized on. The elastic coating is provided outside the pump casing on the suction side end of the spindles. The elastic coating may be constructed in cup form and fitted onto the end of the spindle.
EP04012939A 2003-07-10 2004-05-29 Screw rotor pump Expired - Lifetime EP1496257B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE20310651 2003-07-10
DE20310651U 2003-07-10
DE20313288U 2003-08-26
DE20313288 2003-08-26

Publications (3)

Publication Number Publication Date
EP1496257A2 EP1496257A2 (en) 2005-01-12
EP1496257A3 true EP1496257A3 (en) 2005-08-17
EP1496257B1 EP1496257B1 (en) 2007-07-18

Family

ID=32109020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04012939A Expired - Lifetime EP1496257B1 (en) 2003-07-10 2004-05-29 Screw rotor pump

Country Status (3)

Country Link
EP (1) EP1496257B1 (en)
AT (1) ATE367528T1 (en)
DE (2) DE20318594U1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106640628A (en) * 2016-10-09 2017-05-10 广东技术师范学院 Micro meshing clearance high-pressure screw pump
DE102018103446A1 (en) * 2018-02-15 2019-08-22 Michael Schröter Apparatus and method for compacting and / or displacing a fluid
DE102018222516A1 (en) 2018-12-20 2020-06-25 Audi Ag Drive device for a motor vehicle
DE102022207330A1 (en) 2022-07-19 2024-01-25 Vitesco Technologies GmbH Spindle pump stage, fluid delivery device and motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH232200A (en) * 1942-03-09 1944-05-15 Fried Krupp Germaniawerft Akti Screw pump.
JPS58148292A (en) * 1982-02-26 1983-09-03 Hitachi Ltd Surface processing of rotor of a screw compressor
SU1437575A1 (en) * 1987-03-17 1988-11-15 И.М.Чесноков и А.И.Чеснаков Double-screw mortar pump
US5314321A (en) * 1990-04-06 1994-05-24 Hitachi, Ltd. Screw-type rotary fluid machine including rotors having treated surfaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH232200A (en) * 1942-03-09 1944-05-15 Fried Krupp Germaniawerft Akti Screw pump.
JPS58148292A (en) * 1982-02-26 1983-09-03 Hitachi Ltd Surface processing of rotor of a screw compressor
SU1437575A1 (en) * 1987-03-17 1988-11-15 И.М.Чесноков и А.И.Чеснаков Double-screw mortar pump
US5314321A (en) * 1990-04-06 1994-05-24 Hitachi, Ltd. Screw-type rotary fluid machine including rotors having treated surfaces

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Derwent World Patents Index; Class Q56, AN 1989-157669, "Abrasive compound double-screw pump" *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 269 (M - 259) 30 November 1983 (1983-11-30) *

Also Published As

Publication number Publication date
ATE367528T1 (en) 2007-08-15
DE502004004339D1 (en) 2007-08-30
EP1496257A2 (en) 2005-01-12
EP1496257B1 (en) 2007-07-18
DE20318594U1 (en) 2004-04-08

Similar Documents

Publication Publication Date Title
EP1331017B8 (en) Centrifugal fluid pump assembly
ATE478596T1 (en) SUCTION UNIT
AU2003297991A1 (en) Improved centrifugal pump performance degradation detection
EP2055894A3 (en) Compressor Wheel Assembly
AU2003213061A1 (en) Small piezoelectric air pumps with unobstructed airflow
CA2531350A1 (en) Power driven nailing machine
DE602004024694D1 (en) slip coat
ATE372464T1 (en) PUMP WITH INTEGRATED MOTOR
WO2006136819A3 (en) Combined heater pump apparatus
WO2004104414A8 (en) Rotary pump with reduced fluid stress
DK1321231T3 (en) Grinding device with a suction cap
AP2005003360A0 (en) Centrifugal pump with configured volute.
EP1674746A3 (en) Bearing arrangement
DE50211425D1 (en) electric drive
ATE506848T1 (en) VINE PRECUTTER
EP1659254A3 (en) Wing for a window or door
CA2423498A1 (en) Power transmission belt
EP1870312A3 (en) Superimposed steering system
AU2003212212A1 (en) Electronically commutated internal rotor motor
EP1496257A3 (en) Screw rotor pump
AU2003207850A1 (en) Peristaltic pump having automatically adjusting bushing
AU3285400A (en) Electromechanical drive element comprising a piezoelectric element
EP1788248A3 (en) Peristaltic pump
AU2003277352A1 (en) Integrated speed reducer and pump assembly
CA2499087A1 (en) Belt installation tool

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20051222

AKX Designation fees paid

Designated state(s): AT DE ES GB GR IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES GB GR IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502004004339

Country of ref document: DE

Date of ref document: 20070830

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071029

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20070718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071019

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070718

26N No opposition filed

Effective date: 20080421

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004004339

Country of ref document: DE

Representative=s name: BEHRMANN WAGNER VOETSCH, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004004339

Country of ref document: DE

Representative=s name: BEHRMANN WAGNER VOETSCH, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004004339

Country of ref document: DE

Representative=s name: PATENTANWAELTE BEHRMANN WAGNER PARTNERSCHAFTSG, DE

Effective date: 20120413

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004004339

Country of ref document: DE

Representative=s name: PATENTANWAELTE BEHRMANN WAGNER PARTNERSCHAFTSG, DE

Effective date: 20120405

Ref country code: DE

Ref legal event code: R081

Ref document number: 502004004339

Country of ref document: DE

Owner name: ALLWEILER GMBH, DE

Free format text: FORMER OWNER: ALLWEILER AG, 78315 RADOLFZELL, DE

Effective date: 20120405

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004004339

Country of ref document: DE

Representative=s name: MURGITROYD & COMPANY, DE

Effective date: 20120405

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004004339

Country of ref document: DE

Representative=s name: MURGITROYD & COMPANY, DE

Effective date: 20120413

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140526

Year of fee payment: 11

Ref country code: DE

Payment date: 20140529

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004004339

Country of ref document: DE

Representative=s name: MURGITROYD & COMPANY, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20150505

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004004339

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150529

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151201

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 367528

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160529

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160529