CN101709795A - Flushing valve - Google Patents
Flushing valve Download PDFInfo
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- CN101709795A CN101709795A CN200910260512A CN200910260512A CN101709795A CN 101709795 A CN101709795 A CN 101709795A CN 200910260512 A CN200910260512 A CN 200910260512A CN 200910260512 A CN200910260512 A CN 200910260512A CN 101709795 A CN101709795 A CN 101709795A
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- valve core
- mouth
- overflow
- hole
- chamber
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Abstract
The invention relates to a flushing valve; a B hole (4), a T hole (7) and an A hole (8) are positioned on the same mounting surface; the middle part of a reversing valve core cavity (11) provided with a reversing valve core (2) is communicated with an overflow cavity (12) arranged at the core part of an overflow valve core (5), and the two sides of the reversing valve core cavity can be communicated with a working cavity A (9) and a working cavity B (10) in a working state; one end of the cavity A (9) is communicated with the A hole (8), one end of the cavity B (10) is communicated with the B hole (4), and the A hole (8) and the B hole (4) are respectively connected with a hydraulic pump (motor) in an applied system; one end of an overflow valve (12) is communicated with the T hole (7), and the overflow valve core (5) is fixed with a throttle plate (3); the left and the right ends of the reversing valve core (2) are respectively provided with a balance spring (1) which respectively supports a support baffle (13); the reversing valve core (2) is provided with four small shaft shoulders, wherein the two outmost shaft shoulders are respectively provided with two small flat surfaces; an overflow spring (6) is arranged at the bottom of the overflow valve core (5); and a through hole is arranged in the middle of the throttle plate (3). The flushing valve solves the problems in installation and flow rate adjustment of the prior art.
Description
Technical field
The invention belongs to valve field, particularly relate to a kind of flushing valve.
Background technique
The working life of hydraulic oil in the work loop has been guaranteed in the application of loop flushing valve in quiet liquid transmission.Although loop flushing valve is a selectable unit in many transmission occasions, the application of additional flushing valve can significantly improve the quality of working liquid body and then prolong the life-span of associated components in the transmission system.Be mainly used in " pump-control-motor " closed hydraulic loop in the driving of running mechanism and elevator, it can bleed off the part deep fat in the closed hydraulic loop, thus cooling system.It must with the supporting use of repairing safety valve on slippage pump, the pump.
Summary of the invention
Technical problem to be solved by this invention provides a kind of flushing valve, to solve the problem of installation, Flow-rate adjustment in the prior art.
The technical solution adopted for the present invention to solve the technical problems is: a kind of flushing valve is provided, comprise balance spring, changeover valve core, Rectifier plate, overflow spool and overflow spring, described B mouth, T mouth and A mouth are positioned on the same attachment face, the middle part, changeover valve core chamber at changeover valve core place communicates with the spill cavity of overflow spool core, both sides and active chamber A chamber, the B chamber is interconnected in can be in working order, one end in A chamber is communicated with the A mouth, and an end in B chamber communicates with the B mouth, and A mouth and B mouth are connected with oil hydraulic pump (motor) in the institute application system respectively, one end of relief valve communicates with the T mouth, is fixed with Rectifier plate on the overflow spool.
Two ends, the described changeover valve core left and right sides are provided with balance spring, and the two ends balance spring heads on a supporting baffle respectively, totally four little shaft shoulders on the changeover valve core, have respectively on wherein outmost two shaft shoulders two little flat; Described overflow spring is positioned at the bottom of overflow spool.
There is through hole at described Rectifier plate middle part.
Working principle: totally three interfaces of flushing valve is respectively A, B, T, wherein A, B active chamber; The T mouth is direct return opening; Two hydraulic fluid ports of A, B are connected the direct oil sump tank of T mouth with two oil pockets of oil hydraulic pump (motor) in the closed circuit respectively in the flushing valve.When the A mouth is high pressure in the flushing valve, will promote changeover valve core, make the filler opening of B mouth pressure and pressure regulator valve link up, fluid is by a fixed restriction plate, pressure regulator valve oil sump tank.Otherwise, when the B mouth is high pressure in the flushing valve, will promote changeover valve core, make the filler opening of A mouth pressure and pressure regulator valve link up, fluid is by a fixed restriction plate, pressure regulator valve oil sump tank.Flushing valve commutation pressure reduction 0.3-0.5MPa, the pressure regulator valve set pressure in the flushing valve is 1.6MPa, the size that changes Rectifier plate can change.
Beneficial effect
Characteristics of the present invention be three hydraulic fluid ports on same attachment face, meet oriental's use habit, and be convenient to install; A variable Rectifier plate has been installed on the pressure regulator valve, can have been changed the flow of flushing valve according to the requirement of system; Flow passage resistance is little, the volumetric efficiency height; Good anti-vibration, highly sensitive; Compact structure is saved installing space.
Description of drawings
Fig. 1 is the sectional drawing of the embodiment of the invention.
Fig. 2 is the plan view of the embodiment of the invention.
Wherein: 1-balance spring, 2-changeover valve core, 3-Rectifier plate, 4-B oil-collecting hole, 5-overflow spool, 6-overflow spring, 7-T oil-collecting hole, 8-A oil-collecting hole, 9-A chamber, 10-B chamber, 11-changeover valve core, 12-relief valve, 13-supporting baffle.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1, a kind of flushing valve, comprise balance spring 1, changeover valve core 2, Rectifier plate 3, overflow spool 5 and overflow spring 6, described B mouth 4, T mouth 7 and A mouth 8 are positioned on the same attachment face, 11 middle parts, changeover valve core chamber at changeover valve core 2 places communicate with the spill cavity 12 of overflow spool 5 cores, both sides and active chamber A chamber 9, B chamber 10 is interconnected in can be in working order, and an end in A chamber 9 is communicated with A mouth 8, one end in B chamber 10 communicates with B mouth 4, A mouth 8 and B mouth 4 are connected with oil hydraulic pump (motor) in the institute application system respectively, and an end of relief valve 12 communicates with T mouth 7, is fixed with Rectifier plate 3 on the overflow spool 5.
Two ends, described changeover valve core 2 left and right sides are provided with balance spring 1, and two ends balance spring 1 heads on a supporting baffle 13 respectively, totally four little shaft shoulders on the changeover valve core 2, have respectively on wherein outmost two shaft shoulders two little flat; Described overflow spring 6 is positioned at the bottom of overflow spool 5.
There is through hole at described Rectifier plate 3 middle parts.
During use, two hydraulic fluid ports of A, B are connected with two oil pockets of oil hydraulic pump (motor) in the closed circuit respectively in the flushing valve, T mouth 7 direct oil sump tanks.When A mouth 8 is high pressure, promote changeover valve core 2 and move to right, make B chamber 10 be communicated with relief valve 12, fluid is by a Rectifier plate 3, overflow spool 5 oil sump tanks.Otherwise, when B mouth 4 is high pressure, promotes changeover valve core 2 and move to left, make A chamber 9 be communicated with relief valve 12, fluid is by a Rectifier plate 3, overflow spool 5 oil sump tanks.Flushing valve commutation pressure reduction 0.3-0.5MPa, the pressure regulator valve set pressure in the flushing valve is 1.6MPa, the size that changes Rectifier plate can change.
Use: system's continuous firing is under the low-voltage high speed operating mode; System the following operating time of lasting pressure above 1000 hours/year; The quiet liquid transmission loop that has oil hydraulic cylinder to exist; There is excess-flow valve in the loop; When high pressurized overflow is often opened; When system needs long transfer canal.
Claims (3)
1. flushing valve, comprise balance spring (1), changeover valve core (2), Rectifier plate (3), overflow spool (5) and overflow spring (6), it is characterized in that: described B mouth (4), T mouth (7) and A mouth (8) are positioned on the same attachment face, the middle part, changeover valve core chamber (11) at changeover valve core (2) place communicates with the spill cavity (12) of overflow spool (5) core, both sides and active chamber A chamber (9), B chamber (10) is interconnected in can be in working order, one end in A chamber (9) is communicated with A mouth (8), one end in B chamber (10) communicates with B mouth (4), A mouth (8) and B mouth (4) are connected with oil hydraulic pump (motor) in the institute application system respectively, one end of relief valve (12) communicates with T mouth (7), is fixed with Rectifier plate (3) on the overflow spool (5).
2. a kind of flushing valve according to claim 1, it is characterized in that: described changeover valve core (2) two ends, the left and right sides are provided with balance spring (1), two ends balance spring (1) heads on a supporting baffle (13) respectively, totally four little shaft shoulders on the changeover valve core (2), have respectively on wherein outmost two shaft shoulders two little flat; Described overflow spring (6) is positioned at the bottom of overflow spool (5).
3. a kind of flushing valve according to claim 1 is characterized in that: there is through hole at described Rectifier plate (3) middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910260512A CN101709795A (en) | 2009-12-11 | 2009-12-11 | Flushing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910260512A CN101709795A (en) | 2009-12-11 | 2009-12-11 | Flushing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101709795A true CN101709795A (en) | 2010-05-19 |
Family
ID=42402595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910260512A Pending CN101709795A (en) | 2009-12-11 | 2009-12-11 | Flushing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101709795A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269193A (en) * | 2011-07-05 | 2011-12-07 | 宁波斯达弗液压传动有限公司 | External self-cooled switch valve of hydraulic motor, and method thereof |
| CN104358748A (en) * | 2014-11-03 | 2015-02-18 | 南京萨伯工业设计研究院有限公司 | Backflow flush valve for motor and control method of backflow flush valve |
| CN104454746A (en) * | 2014-11-29 | 2015-03-25 | 南京萨伯工业设计研究院有限公司 | Motor flushing valve block and machining method thereof |
| CN106567868A (en) * | 2015-10-10 | 2017-04-19 | 湖南希法工程机械有限公司 | Closed type hydraulic system and engineering machine |
| CN106762969A (en) * | 2016-12-20 | 2017-05-31 | 赛克思液压科技股份有限公司 | A kind of automatic cooling structure of motor |
| CN109751444A (en) * | 2017-11-03 | 2019-05-14 | 锐佳科技(新加坡)有限公司 | piston flushing valve |
| CN111492146A (en) * | 2018-11-26 | 2020-08-04 | Ｋｙｂ株式会社 | Fluid pressure driving device |
| CN113864273A (en) * | 2021-10-18 | 2021-12-31 | 山东泰丰智能控制股份有限公司 | Flushing valve for closed pump |
-
2009
- 2009-12-11 CN CN200910260512A patent/CN101709795A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269193A (en) * | 2011-07-05 | 2011-12-07 | 宁波斯达弗液压传动有限公司 | External self-cooled switch valve of hydraulic motor, and method thereof |
| CN104358748A (en) * | 2014-11-03 | 2015-02-18 | 南京萨伯工业设计研究院有限公司 | Backflow flush valve for motor and control method of backflow flush valve |
| CN104454746A (en) * | 2014-11-29 | 2015-03-25 | 南京萨伯工业设计研究院有限公司 | Motor flushing valve block and machining method thereof |
| CN104454746B (en) * | 2014-11-29 | 2017-03-22 | 南京萨伯工业设计研究院有限公司 | Motor flushing valve block and machining method thereof |
| CN106567868A (en) * | 2015-10-10 | 2017-04-19 | 湖南希法工程机械有限公司 | Closed type hydraulic system and engineering machine |
| CN106762969A (en) * | 2016-12-20 | 2017-05-31 | 赛克思液压科技股份有限公司 | A kind of automatic cooling structure of motor |
| CN109751444A (en) * | 2017-11-03 | 2019-05-14 | 锐佳科技(新加坡)有限公司 | piston flushing valve |
| CN111492146A (en) * | 2018-11-26 | 2020-08-04 | Ｋｙｂ株式会社 | Fluid pressure driving device |
| CN113864273A (en) * | 2021-10-18 | 2021-12-31 | 山东泰丰智能控制股份有限公司 | Flushing valve for closed pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100519 |