SE7611475L - HYDRAULIC MACHINE - Google Patents

HYDRAULIC MACHINE

Info

Publication number
SE7611475L
SE7611475L SE7611475A SE7611475A SE7611475L SE 7611475 L SE7611475 L SE 7611475L SE 7611475 A SE7611475 A SE 7611475A SE 7611475 A SE7611475 A SE 7611475A SE 7611475 L SE7611475 L SE 7611475L
Authority
SE
Sweden
Prior art keywords
pressure
piston
area
pump
low
Prior art date
Application number
SE7611475A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE414813B (en
Inventor
L Segerstrom
Original Assignee
Imo Industri Ab
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 Imo Industri Ab filed Critical Imo Industri Ab
Priority to SE7611475A priority Critical patent/SE414813B/en
Priority to CH1211677A priority patent/CH623894A5/en
Priority to GB4122477A priority patent/GB1549546A/en
Priority to IT6923677A priority patent/IT1091184B/en
Priority to NL7711023A priority patent/NL7711023A/en
Priority to DE19772745646 priority patent/DE2745646A1/en
Priority to FR7731666A priority patent/FR2367929A1/en
Priority to PL20151777A priority patent/PL112857B1/en
Priority to JP12338877A priority patent/JPS5349307A/en
Publication of SE7611475L publication Critical patent/SE7611475L/en
Publication of SE414813B publication Critical patent/SE414813B/en

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
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • 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
    • F04C2240/60—Shafts
    • F04C2240/605—Shaft sleeves or details thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Rotary-Type Compressors (AREA)
  • Reciprocating Pumps (AREA)
  • Support Of The Bearing (AREA)

Abstract

The machine can work as a pump or a motor. In the first case, the fluid flows from the low-pressure side to the high-pressure side. In the second case it is the other way round. The pressure difference between high pressure and low pressure attempts to push the conveyor worm (1) towards the low-pressure side (65). In order to compensate for this axial thrust, the conveyor worm (1) is provided with a compensation piston (2). In addition there are frictional forces which act in an axial direction. In a motor these forces act in the same direction as the pressure force due to the pressure difference; in a pump they act in the opposite direction. In the case of the pump, the piston area should be chosen to be smaller, and in the case of the motor to be greater than would be required for pressure equalisation. So as not to have to provide the conveyor worm (1) with different pistons (for pump or motor mode), the free end of the piston is given a smaller area (6, d2) than would be required for pressure equalisation, said smaller area being acted upon by the pressure (65) which prevails at the other end of the conveyor worm (1). The piston (2) further has a second area (d1) which is acted upon by an intermediate pressure between the high pressure (67) and the low pressure (65). The sum of the smaller area (6, d2) and the second area (d1) is greater than the area which would be required for pressure equalisation. The intermediate pressure arises in a chamber (9) which is bounded by piston (2) and its bearing (3) and which communicates with the high pressure and low pressure side (67, 65) via leak points (64, 66). The throttle effect of these leak points changes as the piston (2) moves. <IMAGE>
SE7611475A 1976-10-15 1976-10-15 HYDRAULIC MACHINE SE414813B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE7611475A SE414813B (en) 1976-10-15 1976-10-15 HYDRAULIC MACHINE
CH1211677A CH623894A5 (en) 1976-10-15 1977-10-04 Hydraulic screw machine
GB4122477A GB1549546A (en) 1976-10-15 1977-10-04 Meshing-screw type rotary hydraulic machine
IT6923677A IT1091184B (en) 1976-10-15 1977-10-07 SCREW TYPE PUMP OR HYDRAULIC MOTOR
NL7711023A NL7711023A (en) 1976-10-15 1977-10-07 HYDRAULIC MACHINE.
DE19772745646 DE2745646A1 (en) 1976-10-15 1977-10-11 HYDRAULIC MACHINE
FR7731666A FR2367929A1 (en) 1976-10-15 1977-10-14 HYDRAULIC MACHINE
PL20151777A PL112857B1 (en) 1976-10-15 1977-10-14 Screw-type hydraulic device
JP12338877A JPS5349307A (en) 1976-10-15 1977-10-14 Screwwtype hydraulic machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7611475A SE414813B (en) 1976-10-15 1976-10-15 HYDRAULIC MACHINE

Publications (2)

Publication Number Publication Date
SE7611475L true SE7611475L (en) 1978-04-16
SE414813B SE414813B (en) 1980-08-18

Family

ID=20329149

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7611475A SE414813B (en) 1976-10-15 1976-10-15 HYDRAULIC MACHINE

Country Status (9)

Country Link
JP (1) JPS5349307A (en)
CH (1) CH623894A5 (en)
DE (1) DE2745646A1 (en)
FR (1) FR2367929A1 (en)
GB (1) GB1549546A (en)
IT (1) IT1091184B (en)
NL (1) NL7711023A (en)
PL (1) PL112857B1 (en)
SE (1) SE414813B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828348A1 (en) * 1978-06-28 1980-01-10 Allweiler Ag SCREW MACHINE
JPS63188477A (en) * 1987-01-29 1988-08-04 Kyocera Corp Guide and electrification member for welding
DE19508561C2 (en) * 1995-03-10 2003-06-12 Allweiler Ag Screw Pump
SE521443C2 (en) 1999-11-11 2003-11-04 Svenska Rotor Maskiner Ab Screw rotor machine with means for axially actuating at least one of the rotors
DE102010005900A1 (en) * 2010-01-27 2011-07-28 Robert Bosch GmbH, 70469 Hydraulic gear machine
DE102017121882B3 (en) 2017-09-21 2019-01-24 Leistritz Pumpen Gmbh Screw Pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE406958B (en) * 1976-04-27 1979-03-05 Imo Industri Ab HYDRAULIC SCREWDRIVER

Also Published As

Publication number Publication date
GB1549546A (en) 1979-08-08
NL7711023A (en) 1978-04-18
CH623894A5 (en) 1981-06-30
FR2367929A1 (en) 1978-05-12
FR2367929B3 (en) 1980-07-04
SE414813B (en) 1980-08-18
DE2745646C2 (en) 1989-12-21
IT1091184B (en) 1985-06-26
JPS5349307A (en) 1978-05-04
JPS623281B2 (en) 1987-01-24
DE2745646A1 (en) 1978-04-20
PL201517A1 (en) 1978-05-22
PL112857B1 (en) 1980-11-29

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