FR2348432A1 - Lubrication unit with motor driven pump - incorporates pressure discharge valve with cut off connecting pump to tank on pressure drop - Google Patents
Lubrication unit with motor driven pump - incorporates pressure discharge valve with cut off connecting pump to tank on pressure dropInfo
- Publication number
- FR2348432A1 FR2348432A1 FR7610953A FR7610953A FR2348432A1 FR 2348432 A1 FR2348432 A1 FR 2348432A1 FR 7610953 A FR7610953 A FR 7610953A FR 7610953 A FR7610953 A FR 7610953A FR 2348432 A1 FR2348432 A1 FR 2348432A1
- Authority
- FR
- France
- Prior art keywords
- pump
- cut
- pressure drop
- motor driven
- pressure discharge
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/24—Bypassing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
- F04B49/106—Responsive to pumped volume
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Control Of Fluid Gearings (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A hydraulic lubrication unit is fitted with a motor driven hydraulic pump governed by a control unit and fed from a supply tank. A pressure discharge device (38) is incorporated, which is controlled dependent upon the delivery quantity of the pump (28) and which connects the outlet circuit (12) of the pump with the supply tank (34) as soon as the delivery quantity is less than a predetermined value. The pressure discharge device (38) has a throttle passage (40) in the pump (28) outlet circuit, anda cut-off (42) which is operable dependent upon the bias of a return spring (52) and the pressure drop through the throttle passage. The cut-off (42) connects the pump outlet circuit (12) on the flow-away side of the throttle passage with the supply tank (34) as soon as the pressure drop through the throttle passage is below a specific level.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7610953A FR2348432A1 (en) | 1976-04-14 | 1976-04-14 | Lubrication unit with motor driven pump - incorporates pressure discharge valve with cut off connecting pump to tank on pressure drop |
IT940477A IT1116986B (en) | 1976-04-14 | 1977-04-12 | HYDRAULIC LUBRICATION CENTRAL |
DE19772716559 DE2716559A1 (en) | 1976-04-14 | 1977-04-14 | HYDRAULIC LUBRICATION CENTER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7610953A FR2348432A1 (en) | 1976-04-14 | 1976-04-14 | Lubrication unit with motor driven pump - incorporates pressure discharge valve with cut off connecting pump to tank on pressure drop |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2348432A1 true FR2348432A1 (en) | 1977-11-10 |
Family
ID=9171812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7610953A Withdrawn FR2348432A1 (en) | 1976-04-14 | 1976-04-14 | Lubrication unit with motor driven pump - incorporates pressure discharge valve with cut off connecting pump to tank on pressure drop |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2716559A1 (en) |
FR (1) | FR2348432A1 (en) |
IT (1) | IT1116986B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0473385A1 (en) * | 1990-08-28 | 1992-03-04 | Daikin Industries, Limited | One-main-pipe type centralized lubrication apparatus |
EP1180599A1 (en) * | 2000-08-16 | 2002-02-20 | Siemens Building Technologies AG | Safeguarding device for a pump, which can be used in a fluid transmission |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4537285A (en) * | 1983-04-11 | 1985-08-27 | Brown Patrick A | Conveyor lubricating apparatus |
SE451090B (en) * | 1985-12-13 | 1987-08-31 | Alfa Laval Separation Ab | METHOD FOR DETECTING AND INDICATING ERRORS IN A LUBRICANTS CIRCUIT |
DE59005999D1 (en) * | 1989-07-07 | 1994-07-14 | Barmag Barmer Maschf | Vane vacuum pump with metering device. |
DE4203983A1 (en) * | 1992-02-11 | 1992-08-20 | Ulf Greufe | DEVICE AND METHOD FOR IMPROVING THE PERFORMANCE DIGIT IN THE REFRIGERANT CIRCUIT |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2531319A (en) * | 1945-01-19 | 1950-11-21 | Avco Mfg Corp | Engine lubricating apparatus |
US2871981A (en) * | 1957-02-05 | 1959-02-03 | Sundstand Machine Tool Co | Air block valve circuit |
US3071209A (en) * | 1960-09-09 | 1963-01-01 | Norgren Co C A | Lubricating apparatus and control valve |
-
1976
- 1976-04-14 FR FR7610953A patent/FR2348432A1/en not_active Withdrawn
-
1977
- 1977-04-12 IT IT940477A patent/IT1116986B/en active
- 1977-04-14 DE DE19772716559 patent/DE2716559A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2531319A (en) * | 1945-01-19 | 1950-11-21 | Avco Mfg Corp | Engine lubricating apparatus |
US2871981A (en) * | 1957-02-05 | 1959-02-03 | Sundstand Machine Tool Co | Air block valve circuit |
US3071209A (en) * | 1960-09-09 | 1963-01-01 | Norgren Co C A | Lubricating apparatus and control valve |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0473385A1 (en) * | 1990-08-28 | 1992-03-04 | Daikin Industries, Limited | One-main-pipe type centralized lubrication apparatus |
US5165502A (en) * | 1990-08-28 | 1992-11-24 | Daikin Industries Ltd. | One-main pipe type centralized lubrication apparatus |
EP1180599A1 (en) * | 2000-08-16 | 2002-02-20 | Siemens Building Technologies AG | Safeguarding device for a pump, which can be used in a fluid transmission |
US6595233B2 (en) | 2000-08-16 | 2003-07-22 | Siemens Building Technologies Ag | Safety device for a fluid transmission |
Also Published As
Publication number | Publication date |
---|---|
IT1116986B (en) | 1986-02-10 |
DE2716559A1 (en) | 1977-10-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |