GB1339509A - Filtering of pressure medium in an hydraulic installation - Google Patents

Filtering of pressure medium in an hydraulic installation

Info

Publication number
GB1339509A
GB1339509A GB2490371*A GB2490371A GB1339509A GB 1339509 A GB1339509 A GB 1339509A GB 2490371 A GB2490371 A GB 2490371A GB 1339509 A GB1339509 A GB 1339509A
Authority
GB
United Kingdom
Prior art keywords
filter
valve
fluid
main pump
pump
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
Application number
GB2490371*A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1339509A publication Critical patent/GB1339509A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/147—Bypass or safety valves

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Filtration Of Liquid (AREA)

Abstract

1339509 Filtration in hydraulic circuit ROBERT BOSCH GmbH 19 April 1971 [21 May 1970] 24903/71 Heading BID In a hydraulic circuit wherein pre-delivery pump 61, filter 63 and main pump 65 are arranged in series to deliver fluid from reservoir 69 to load 67, a fluid-operated valve 72 is moved by a rise in pressure loss across filter 63 so as to reduce the flow through the filter. In Fig. 3 valve 72 short circuits main pump 65, so flow through the filter stops. The output pressure of pre-delivery pump 61 is limited by a valve 68 controlled directly by said pressure. In Fig. 4 (not shown) the fluid-operated valve (97) operates a hydraulic motor (90) to reduce the variable delivery of the main pump (85) to a minimum. In Fig. 1 (not shown) pressurelimiting valve (29) has three positions, in the two open ones of which it delivers fluid to operate a by-pass valve (37) to a first position wherein the main pump (16) is connected to the load, a fluid-operated valve (22) operated by the pressure drop across the filter delivering fluid to move valve (37) to by-pass pump (16) if the filter clogs. In Fig. 2 (not shown) the main pump is of the variable delivery type whose output control is moved to the minimum setting and locked there by fluid from valve (22) if the filter clogs. When not held in their minimum positions the output controls of main pumps in Figs. (2, 4) are manually adjustable. The circuits described ensure that only filtered fluid ever reaches the main pump and load and that the filter is protected from damage by reducing the flow therethrough if the pressure loss across the filter rises.
GB2490371*A 1970-05-21 1971-04-19 Filtering of pressure medium in an hydraulic installation Expired GB1339509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702024675 DE2024675A1 (en) 1970-05-21 1970-05-21 Device for filtering an open pressure medium circuit

Publications (1)

Publication Number Publication Date
GB1339509A true GB1339509A (en) 1973-12-05

Family

ID=5771600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2490371*A Expired GB1339509A (en) 1970-05-21 1971-04-19 Filtering of pressure medium in an hydraulic installation

Country Status (5)

Country Link
US (1) US3777888A (en)
JP (1) JPS492575B1 (en)
DE (1) DE2024675A1 (en)
FR (1) FR2093607A5 (en)
GB (1) GB1339509A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50112676A (en) * 1974-02-20 1975-09-04
CH589464A5 (en) * 1975-07-11 1977-07-15 Filtrox Maschinenbau Ag
US4412866A (en) * 1981-05-26 1983-11-01 The Amalgamated Sugar Company Method and apparatus for the sorption and separation of dissolved constituents
JPH0172816U (en) * 1987-11-05 1989-05-16
US5167837A (en) * 1989-03-28 1992-12-01 Fas-Technologies, Inc. Filtering and dispensing system with independently activated pumps in series
FR2649332B1 (en) * 1989-07-07 1991-10-18 Gabet Andre AUTOMATIC CLEANING FILTRATION DEVICE FOR LIQUID CIRCUIT
US5527161A (en) * 1992-02-13 1996-06-18 Cybor Corporation Filtering and dispensing system
US5490765A (en) * 1993-05-17 1996-02-13 Cybor Corporation Dual stage pump system with pre-stressed diaphragms and reservoir
AT3222U1 (en) * 1998-05-06 1999-11-25 Steyr Daimler Puch Ag PRESSURE OIL SYSTEM WITH OIL FILTER AND TRANSMISSION EQUIPPED WITH IT
NO314341B1 (en) * 2001-06-08 2003-03-10 Joergen Groenfur Process and apparatus for fine filtration
JP3890229B2 (en) 2001-12-27 2007-03-07 株式会社コガネイ Chemical liquid supply apparatus and degassing method of chemical liquid supply apparatus
JP3947398B2 (en) * 2001-12-28 2007-07-18 株式会社コガネイ Chemical solution supply apparatus and chemical solution supply method
DE10357217B4 (en) * 2003-12-08 2005-12-29 Sauer-Danfoss (Neumünster) GmbH & Co OHG Arrangement for filtering hydraulic fluid
CN101655116B (en) * 2009-09-17 2011-12-14 成都成设航空科技有限公司 Hydraulic power source system
DE102012022265A1 (en) * 2012-11-13 2014-05-15 Fmb Blickle Gmbh Method for controlling e.g. axial piston pump for appropriate power supply in fluid system, involves filtering fluid guided by control line from fluid system prior to entry into controller of displacement pump through control line
CN108704369B (en) * 2018-06-13 2020-11-24 广州发展集团股份有限公司 Circulating water filter device, system and water filtering method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757721A (en) * 1953-07-29 1956-09-26 Havilland Engine Co Ltd Fuel supply systems for liquid fuel engines
US3013574A (en) * 1955-12-05 1961-12-19 Gen Motors Corp Control system
US2868382A (en) * 1956-09-21 1959-01-13 United Aircraft Corp Filter device with coarse filter and self-cleaning fine filter
US3229816A (en) * 1962-02-05 1966-01-18 Rosaen Filter Co Flow control fitting
US3618777A (en) * 1969-12-15 1971-11-09 Chandler Evans Inc Low-flow contaminated fuel transfer system for a fuel control

Also Published As

Publication number Publication date
JPS492575B1 (en) 1974-01-21
DE2024675A1 (en) 1971-12-09
US3777888A (en) 1973-12-11
FR2093607A5 (en) 1972-01-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees