DE3869737D1 - INTERNAL GEAR PUMP. - Google Patents

INTERNAL GEAR PUMP.

Info

Publication number
DE3869737D1
DE3869737D1 DE8888118185T DE3869737T DE3869737D1 DE 3869737 D1 DE3869737 D1 DE 3869737D1 DE 8888118185 T DE8888118185 T DE 8888118185T DE 3869737 T DE3869737 T DE 3869737T DE 3869737 D1 DE3869737 D1 DE 3869737D1
Authority
DE
Germany
Prior art keywords
gear pump
hollow gear
internal gear
gear
cells
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.)
Expired - Lifetime
Application number
DE8888118185T
Other languages
German (de)
Inventor
Siegfried Hertell
Dieter Otto
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.)
SAURER GMBH & CO. KG, 41069 MOENCHENGLADBACH, DE
Original Assignee
Barmag Barmer Maschinenfabrik 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
Priority claimed from DE19873737961 external-priority patent/DE3737961A1/en
Application filed by Barmag Barmer Maschinenfabrik AG filed Critical Barmag Barmer Maschinenfabrik AG
Priority to DE8888118185T priority Critical patent/DE3869737D1/en
Application granted granted Critical
Publication of DE3869737D1 publication Critical patent/DE3869737D1/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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C15/064—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps
    • F04C15/066—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps of the non-return type
    • F04C15/068—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps of the non-return type of the elastic type, e.g. reed valves
    • 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
    • F04C2/088—Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement
    • 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
    • F04C2/102—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 the two members rotating simultaneously around their respective axes

Landscapes

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

Abstract

The gear pump comprises a drive pinion (3) and an internally-toothed hollow gear (1). The trailing faces of the pinion teeth work with the mating ones on the hollow gear to form a number of cells, sealed off from each other. Several cells are connected by non-return valves to the common pressure passage. The driving flanks of the pinion teeth and/or the mating ones on the hollow gear have recesses, grooves etc., enclosed in the axial direction and connecting the tooth crowns and roots.
DE8888118185T 1987-11-07 1988-11-02 INTERNAL GEAR PUMP. Expired - Lifetime DE3869737D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8888118185T DE3869737D1 (en) 1987-11-07 1988-11-02 INTERNAL GEAR PUMP.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19873737961 DE3737961A1 (en) 1987-11-07 1987-11-07 Internal-gear pump
DE3743153 1987-12-19
DE8888118185T DE3869737D1 (en) 1987-11-07 1988-11-02 INTERNAL GEAR PUMP.

Publications (1)

Publication Number Publication Date
DE3869737D1 true DE3869737D1 (en) 1992-05-07

Family

ID=25861598

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888118185T Expired - Lifetime DE3869737D1 (en) 1987-11-07 1988-11-02 INTERNAL GEAR PUMP.

Country Status (2)

Country Link
EP (1) EP0315878B1 (en)
DE (1) DE3869737D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4107704C2 (en) * 1990-03-15 1994-12-01 Barmag Luk Automobiltech hydraulic pump
EP0579981B1 (en) * 1992-06-29 1996-10-23 LuK Automobiltechnik GmbH & Co. KG Internal gear pump for hydraulic fluids
DE19804133A1 (en) * 1998-02-03 1999-08-12 Voith Turbo Kg Sickle-free internal gear pump
DE102006047312A1 (en) * 2006-10-06 2008-04-10 Sauer-Danfoss Aps Hydraulic machine
DE102022130861A1 (en) 2022-11-22 2024-05-23 Klaus Stühmeier Conveying device for liquid or gaseous medium

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428181A (en) * 1944-10-27 1947-09-30 Frank C Sibley Rotary gear pump
US2830542A (en) * 1953-06-22 1958-04-15 Gen Motors Corp Fluid pump
US3490383A (en) * 1969-01-29 1970-01-20 Koehring Co Hydraulic pump or motor
DE2240632C2 (en) * 1972-08-18 1983-09-01 Danfoss A/S, 6430 Nordborg Rotary piston machine for liquids
US4025243A (en) * 1973-01-05 1977-05-24 Gresen Manufacturing Company Orbital device
US4145167A (en) * 1976-02-17 1979-03-20 Danfoss A/S Gerotor machine with pressure balancing recesses in inner gear
DE3444859A1 (en) * 1983-12-14 1985-06-27 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Rotary cellular pump for hydraulic systems
DE3444857A1 (en) * 1984-12-08 1986-06-12 Graubremse Gmbh, 6900 Heidelberg Control valve

Also Published As

Publication number Publication date
EP0315878B1 (en) 1992-04-01
EP0315878A2 (en) 1989-05-17
EP0315878A3 (en) 1990-01-17

Similar Documents

Publication Publication Date Title
DE3772775D1 (en) INTERNAL GEAR PUMP.
ES537284A0 (en) IMPROVEMENTS IN A POWER TRANSMISSION SYSTEM
ES439422A1 (en) Mixing apparatus
DE3869737D1 (en) INTERNAL GEAR PUMP.
GB578809A (en) Improvements in gear pumps
GB1142156A (en) Improvements in or relating to rotary fluid pressure pumps and motors of the internally meshing n and n+1 tooth type
IT1182087B (en) MULTI-STAGE INTERNAL TOOTH GEAR PUMP
ES2090799T3 (en) WHEEL PUMP WITH INTERIOR TOOTHLESS WITHOUT SICKLE WITH INTEGRATED SEALING ELEMENTS IN THE HEADS OF THE TEETH, WHICH PRESENT A FUNGIFORM SECTION.
GB1170773A (en) Gear Pumps
DE3765192D1 (en) OIL PUMP.
FR2559554B1 (en) INTERNAL TOOTHED GEAR PUMP
JPS5647692A (en) Variable displacement type internal gear pump
DE3871787D1 (en) MULTIPLE SWITCHING OF ROTATION VACUUM PUMPS.
EP1764506A3 (en) Internal gear pump
GB739357A (en) Improvements relating to gear pumps
EP0166237A3 (en) Capillary dialyzer
SU1062459A1 (en) Planetary drive
GB583940A (en) Gear-tooth rotary pumps
FR2394670A1 (en) Gear type pump or motor - has special profile to teeth to give increased throughput efficiency and power
ATE277286T1 (en) SERIES FOR GEAR MOTORS WITH DIFFERENT THEORETICAL TORQUE
SU1399504A1 (en) Gear-type hydraulic machine with internal meshing
SU939825A1 (en) Planetary cycloidal hydraulic machine
DE2737833A1 (en) Pneumatic or hydraulic gear type motor - introduces fluid under pressure into root space between teeth of meshing wheels to give high efficiency
FR2307991A1 (en) Gear pump or motor with recessed bearing elements - connected with inlet and outlet and separated by sealing land of half tooth pitch
SU1613686A1 (en) Gear-type hydraulic machine

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SAURER GMBH & CO. KG, 41069 MOENCHENGLADBACH, DE

8339 Ceased/non-payment of the annual fee