JPS5540373A - Flow rate control valve - Google Patents
Flow rate control valveInfo
- Publication number
- JPS5540373A JPS5540373A JP638579A JP638579A JPS5540373A JP S5540373 A JPS5540373 A JP S5540373A JP 638579 A JP638579 A JP 638579A JP 638579 A JP638579 A JP 638579A JP S5540373 A JPS5540373 A JP S5540373A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- port
- spool valve
- minor diameter
- 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.)
- Pending
Links
Abstract
PURPOSE: To keep the quantity of delivery oil constant regardless of any increase in the discharge amount of an oil pump by forming a minor diameter part in a spool valve and also providing the outside surface of this minor diameter portion with unevenness.
CONSTITUTION: Discharge oil from the oil pump is delivered to oil-hydraulically operate apparatus through intake port 8, orifice port 10, and outlet port 9. An increase in the quentity of discharged oil yields pressure difference between before and after the orifice port 10 depending on how it is throttled, and the spool valve 3 puts the high-pressure chamber 5 and by-pass port 14 into communication each other, working against the spring 6. Part of the pressure oil from the oil pump is thereby fed back to the intake hole of pump. Rightward shift of the spool valve 3, which occurs at the same time, closes the opening of orifice port 10 with ring- shaped extruded part 15b at the minor diameter part 15 with a certain gap a2 reserved, so that the throat effect is raised up and the quantity of feedback oil is increased while the amount of delivery oil to the oil-hydraulically operated apparatus is decreased temporarily. Thus it can be kept constant.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP638579A JPS5540373A (en) | 1979-01-22 | 1979-01-22 | Flow rate control valve |
US06/027,240 US4244389A (en) | 1978-09-08 | 1979-04-05 | Flow control valve |
DE2916575A DE2916575C2 (en) | 1978-09-08 | 1979-04-24 | Current regulator |
ES480339A ES480339A1 (en) | 1978-09-08 | 1979-05-08 | Flow control valve |
GB7916747A GB2034441B (en) | 1978-09-08 | 1979-05-15 | Flow control valves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP638579A JPS5540373A (en) | 1979-01-22 | 1979-01-22 | Flow rate control valve |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11045778A Division JPS5536680A (en) | 1978-09-08 | 1978-09-08 | Flow control valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5540373A true JPS5540373A (en) | 1980-03-21 |
Family
ID=11636904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP638579A Pending JPS5540373A (en) | 1978-09-08 | 1979-01-22 | Flow rate control valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5540373A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5771740A (en) * | 1980-10-22 | 1982-05-04 | Matsushita Electric Ind Co Ltd | Automatic screw driver |
JPS58146168U (en) * | 1982-03-26 | 1983-10-01 | 自動車機器株式会社 | flow control valve |
JPS61191826U (en) * | 1985-05-20 | 1986-11-29 | ||
JPS62157734A (en) * | 1985-12-27 | 1987-07-13 | Niigata Eng Co Ltd | Supplier for heat exchange tube or the like |
JP2012059299A (en) * | 2011-12-20 | 2012-03-22 | Shimadzu Corp | Flow control valve |
CN102748336A (en) * | 2012-07-11 | 2012-10-24 | 大连华锐重工集团股份有限公司 | Speed change valve used for heavy machinery |
CN111140682A (en) * | 2018-11-06 | 2020-05-12 | 宁波方太厨具有限公司 | Automatic water supply valve for heating loop |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5318823A (en) * | 1976-08-06 | 1978-02-21 | Jidosha Kiki Co | Flow control valve |
-
1979
- 1979-01-22 JP JP638579A patent/JPS5540373A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5318823A (en) * | 1976-08-06 | 1978-02-21 | Jidosha Kiki Co | Flow control valve |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5771740A (en) * | 1980-10-22 | 1982-05-04 | Matsushita Electric Ind Co Ltd | Automatic screw driver |
JPS6222734B2 (en) * | 1980-10-22 | 1987-05-19 | Matsushita Electric Ind Co Ltd | |
JPS58146168U (en) * | 1982-03-26 | 1983-10-01 | 自動車機器株式会社 | flow control valve |
JPS61191826U (en) * | 1985-05-20 | 1986-11-29 | ||
JPH028663Y2 (en) * | 1985-05-20 | 1990-03-01 | ||
JPS62157734A (en) * | 1985-12-27 | 1987-07-13 | Niigata Eng Co Ltd | Supplier for heat exchange tube or the like |
JPH0445286B2 (en) * | 1985-12-27 | 1992-07-24 | Niigata Engineering Co Ltd | |
JP2012059299A (en) * | 2011-12-20 | 2012-03-22 | Shimadzu Corp | Flow control valve |
CN102748336A (en) * | 2012-07-11 | 2012-10-24 | 大连华锐重工集团股份有限公司 | Speed change valve used for heavy machinery |
CN102748336B (en) * | 2012-07-11 | 2014-10-15 | 大连华锐重工集团股份有限公司 | Speed change valve used for heavy machinery |
CN111140682A (en) * | 2018-11-06 | 2020-05-12 | 宁波方太厨具有限公司 | Automatic water supply valve for heating loop |
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