FR2411319A1 - SCREW PUMP - Google Patents

SCREW PUMP

Info

Publication number
FR2411319A1
FR2411319A1 FR7832343A FR7832343A FR2411319A1 FR 2411319 A1 FR2411319 A1 FR 2411319A1 FR 7832343 A FR7832343 A FR 7832343A FR 7832343 A FR7832343 A FR 7832343A FR 2411319 A1 FR2411319 A1 FR 2411319A1
Authority
FR
France
Prior art keywords
screw pump
throttle
interval
return duct
equalization piston
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
FR7832343A
Other languages
French (fr)
Other versions
FR2411319B3 (en
Inventor
Joachim Wegener
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 FR2411319A1 publication Critical patent/FR2411319A1/en
Application granted granted Critical
Publication of FR2411319B3 publication Critical patent/FR2411319B3/fr
Granted 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)

Abstract

POMPE A VIS. POMPE A VIS QUI COMPREND UNE BROCHE D'ENTRAINEMENT ENTRAINEE DU COTE DU REFOULEMENT, CETTE BROCHE ETANT POURVUE, AFIN D'EGALISER LA POUSSEE HYDRAULIQUE AXIALE, D'UN PISTON D'EGALISATION TOURNANT DANS UN INTERVALLE D'ETRANGLEMENT ET DONT LA FACE FRONTALE, AINSI QUE LA CHAMBRE QUI Y FAIT SUITE ET QUI S'ETEND JUSQU'AU JOINT DE TRAVERSEE DE L'ARBRE, EST SOULAGEE DE LA PRESSION PAR UN CONDUIT DE RETOUR ABOUTISSANT A L'ASPIRATION DE LA POMPE, CARACTERISEE EN CE QUE L'INTERVALLE D'ETRANGLEMENT EST INTERROMPU AU PISTON D'EGALISATION PAR UNE GORGE A LAQUELLE EST RACCORDE LE CONDUIT DE RETOUR. S'APPLIQUE AUX POMPES EN GENERAL ET A CELLES ASSURANT LA CIRCULATION DE LIQUIDES PORTES A DES TEMPERATURES RELATIVEMENT ELEVEES ET CONTENANT DES PARTICULES ABRASIVES.SCREW PUMP. SCREW PUMP WHICH INCLUDES A DRIVING SPINDLE DRIVEN FROM THE DISCHARGE SIDE, THIS SPINDLE BEING PROVIDED, IN ORDER TO EQUAL THE AXIAL HYDRAULIC THRUST, OF AN EQUALIZATION PISTON TURNING IN A THROTTLE INTERVAL AND WHICH THE FRONT FACE AS WELL AS THE SUCCESSFUL CHAMBER, WHICH EXTENDS TO THE SHAFT THROUGH SEAL, IS PRESSURE RELIEF BY A RETURN DUCT ENDING THE PUMP SUCTION, CHARACTERIZED AS THE INTERVAL OF THE THROTTLE IS INTERRUPTED AT THE EQUALIZATION PISTON BY A THROAT TO WHICH THE RETURN DUCT IS CONNECTED. APPLIES TO PUMPS IN GENERAL AND TO THOSE ENSURING THE CIRCULATION OF LIQUIDS AT RELATIVELY HIGH TEMPERATURES AND CONTAINING ABRASIVE PARTICLES.

FR7832343A 1977-12-08 1978-11-16 SCREW PUMP Granted FR2411319A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772754612 DE2754612A1 (en) 1977-12-08 1977-12-08 SCREW PUMP

Publications (2)

Publication Number Publication Date
FR2411319A1 true FR2411319A1 (en) 1979-07-06
FR2411319B3 FR2411319B3 (en) 1981-09-11

Family

ID=6025561

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832343A Granted FR2411319A1 (en) 1977-12-08 1978-11-16 SCREW PUMP

Country Status (6)

Country Link
CH (1) CH636930A5 (en)
DE (1) DE2754612A1 (en)
FR (1) FR2411319A1 (en)
GB (1) GB2009851B (en)
IT (1) IT1101489B (en)
SE (1) SE7812600L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8513684D0 (en) * 1985-05-30 1985-07-03 Boc Group Plc Mechanical pumps
DE3916339A1 (en) * 1989-05-19 1990-11-22 Rehau Ag & Co Pump for delivery of cold-flow medium - with integration of second pump to deliver cleaning fluid
CN108050265B (en) * 2017-12-07 2019-07-02 东北石油大学 A kind of wide range pressure-regulating valve

Also Published As

Publication number Publication date
GB2009851B (en) 1982-07-21
GB2009851A (en) 1979-06-20
SE7812600L (en) 1979-06-09
DE2754612A1 (en) 1979-06-13
FR2411319B3 (en) 1981-09-11
IT1101489B (en) 1985-09-28
CH636930A5 (en) 1983-06-30
IT7830634A0 (en) 1978-12-06

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Legal Events

Date Code Title Description
ST Notification of lapse