CN2697366Y - Electrohydraulic ratio pressure flow control valve with non-return valve - Google Patents
Electrohydraulic ratio pressure flow control valve with non-return valve Download PDFInfo
- Publication number
- CN2697366Y CN2697366Y CN 200420022607 CN200420022607U CN2697366Y CN 2697366 Y CN2697366 Y CN 2697366Y CN 200420022607 CN200420022607 CN 200420022607 CN 200420022607 U CN200420022607 U CN 200420022607U CN 2697366 Y CN2697366 Y CN 2697366Y
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- Prior art keywords
- valve
- chamber
- spring
- flow control
- way valve
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- Expired - Fee Related
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Abstract
The utility model relates to a flow control valve, in particular an electrohydraulic ratio pressure flow control valve with non-return valve. A non-return valve is added between the exit pressure chamber of the main valve body of the ratio valve and the load chamber. The flow direction is from A to P. The non-return valve comprises a steel ball, a spring, a spring seat and a valve cover. The valve cover is fixed on the main valve body of the ratio valve. A steel ball, a spring and a spring seat are separately arranged in the valve cover. When the power of the whole machine is cut off and the ratio valve stops working, the load chamber can be unloaded quickly. Each element of the hydraulic system and a plurality of parts of the whole machine are damaged because the power of the whole machine is cut off. The structure of the utility model is simple and reasonable. The utility model fits to all kinds of the electrohydraulic ratio pressure flow control system.
Description
Technical field
The utility model relates to a kind of flow control valve, specifically is the fluid pressure and flow controlling valve implemented by pressure sensor and flow correction calculator of band one-way valve.
Background technique
There are the following problems in hydraulic system is used at present, as shown in Figure 1: when complete machine is cut off the electricity supply, when Proportional valve quits work, because of closing suddenly of throttle valve 3, oil pressure off-load at once in that load cavity (A1-A2) 2 also exists needs a period of time, and by slowly releases such as internal leakages.It has all increased loss to each element of hydraulic system (especially big flow system) and some component in the complete machine.If dismantle component after shutdown, load cavity pressure oil can spray, and debugging and maintenance are caused inconvenience at once.
Usually result of the above problems is one-way valve B4 of increase between load cavity (being the A chamber) in hydraulic system and oil pump outlet pressure chamber (being the P chamber).As shown in Figure 2: increase an one-way valve B4 between A chamber and P chamber, when complete machine was worked, the A cavity pressure was lower than the P cavity pressure, and one-way valve B4 can't open.When complete machine is cut off the electricity supply, when quitting work, the off-load of P cavity pressure, A cavity pressure oil can be by this one-way valve B4 to the off-load of P chamber.Such handling is that above-mentioned problem has been solved, but but additionally increases an one-way valve B4, makes hydraulic system complicated, and increases cost of production.
Summary of the invention
The utility model purpose is at above-mentioned defective, provides a kind of simple and reasonable, can make the fluid pressure and flow controlling valve implemented by pressure sensor and flow correction calculator of the band one-way valve of load cavity quick relief.The utility model purpose is achieved in that it is one-way valve of increase between the outlet pressure chamber (P chamber) of the Proportional valve main valve body of existing fluid pressure and flow controlling valve implemented by pressure sensor and flow correction calculator and load cavity (A chamber), flow direction A → P.Described one-way valve is made up of spool, spring, spring seat, valve pocket, and valve pocket is fixed on the Proportional valve main valve body, and spool, spring, spring seat are arranged in valve pocket successively; Described spool is a steel ball.
The utility model has increased an one-way valve in the Proportional valve main valve body, can after cutting off the electricity supply, complete machine when Proportional valve quits work, can make the oil pressure quick relief of load cavity, avoid each element and the component in the complete machine of hydraulic system impaired, make the hydraulic system structure layout more reasonable.
Accompanying drawing title and explanation thereof
1, is the fundamental diagram of prior art.
2, be the fundamental diagram that increases an one-way valve B in the prior art.
3, be fundamental diagram of the present utility model.
4, be structural representation of the present utility model.
The symbol of figure and explanation thereof: the 1st, one-way valve, the 2nd, load cavity (A1-A2), the 3rd, throttle valve, the 4th, one-way valve B, the 5th, Proportional valve main valve body, the 6th, steel ball, the 7th, spring, the 8th, spring seat, the 9th, valve pocket, the 10th, throttling valve core, the 11st, proportion electro-magnet, the 12nd, load cavity, the 13rd, throttle valve spring, the 14th, outlet pressure chamber.
Embodiment
It is to be installed on the Proportional valve main valve body 5 by one-way valve 1, and be between outlet pressure chamber 14 (P chamber) and the load cavity 12 (A chamber), described one-way valve 1 is made up of steel ball 6, spring 7, spring seat 8, valve pocket 9, valve pocket 9 has steel ball 6, spring 7, spring seat 8 above successively on Proportional valve main valve body 5.
Start working when Proportional valve during use, proportion electro-magnet 11 is pushed throttling valve core 10 open, and the throttle valve spring 13 of compression throttling spool 10, and pressure oil 14 flows into load cavities 12 from the outlet pressure chamber, promptly pressure oil from the P chamber to the A chamber.This moment one-way valve 1 spool (steel ball 6) two end N, M, end pressure contrast is P
N＞P
M, one-way valve 1 is closed so, does not influence proper functioning of the present utility model.When complete machine is cut off the electricity supply, when quitting work, throttle valve spring 13 makes throttling valve core 10 returning positions, and outlet pressure chamber 14 is the off-load of P chamber, and no pressure oil, load cavity 12 are the A chamber, because of runner is closed residual back pressure suddenly; This moment steel ball 6 two end N, the M on the one-way valve 1, the end pressure contrast is P
N＜P
M, one-way valve 1 is opened so, and A cavity pressure oil passes through one-way valve 1 to P chamber quick relief.
The utility model is cut off the electricity supply impairedly except each element with the hydraulic system of preventing and some component in the complete machine because of complete machine, and makes hydraulic system structure layout advantages of simple more.It need in the hydraulic system of pressurize in plastic injection equipment or the rubber injection mold machine also to can be applicable to.
Claims (3)
1, a kind of fluid pressure and flow controlling valve implemented by pressure sensor and flow correction calculator with one-way valve is characterized in that increasing between the outlet pressure chamber (14) (P chamber) of Proportional valve main valve body (5) and the load cavity (12) (A chamber) one-way valve (1), flow direction A → P.
2, the fluid pressure and flow controlling valve implemented by pressure sensor and flow correction calculator of band one-way valve according to claim 1, it is characterized in that described one-way valve (1) is made up of spool, spring (7), spring seat (8), valve pocket (9), valve pocket (9) is fixed on the Proportional valve main valve body (5), and spool, spring (7), spring seat (8) are arranged in valve pocket (9) successively.
3, the fluid pressure and flow controlling valve implemented by pressure sensor and flow correction calculator of band one-way valve according to claim 2 is characterized in that described spool is steel ball (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420022607 CN2697366Y (en) | 2004-05-11 | 2004-05-11 | Electrohydraulic ratio pressure flow control valve with non-return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420022607 CN2697366Y (en) | 2004-05-11 | 2004-05-11 | Electrohydraulic ratio pressure flow control valve with non-return valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2697366Y true CN2697366Y (en) | 2005-05-04 |
Family
ID=34770448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420022607 Expired - Fee Related CN2697366Y (en) | 2004-05-11 | 2004-05-11 | Electrohydraulic ratio pressure flow control valve with non-return valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2697366Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481957B (en) * | 2005-12-09 | 2018-12-04 | 伟创力美国汽车有限公司 | Hydraulic fluid channel with granule adsorbent magnet |
| CN110345135A (en) * | 2019-08-09 | 2019-10-18 | 桂林航天工业学院 | A kind of more pump interflow hydraulic manifold block |
| CN112253560A (en) * | 2020-10-28 | 2021-01-22 | 哈尔滨工程大学 | Hydraulic pressure flexible arm driving and controlling system based on hydraulic half-bridge |
-
2004
- 2004-05-11 CN CN 200420022607 patent/CN2697366Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481957B (en) * | 2005-12-09 | 2018-12-04 | 伟创力美国汽车有限公司 | Hydraulic fluid channel with granule adsorbent magnet |
| CN110345135A (en) * | 2019-08-09 | 2019-10-18 | 桂林航天工业学院 | A kind of more pump interflow hydraulic manifold block |
| CN112253560A (en) * | 2020-10-28 | 2021-01-22 | 哈尔滨工程大学 | Hydraulic pressure flexible arm driving and controlling system based on hydraulic half-bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050504 Termination date: 20120511 |