CN204512051U - A kind of oil circuit flow pressure control device - Google Patents
A kind of oil circuit flow pressure control device Download PDFInfo
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- CN204512051U CN204512051U CN201520181498.6U CN201520181498U CN204512051U CN 204512051 U CN204512051 U CN 204512051U CN 201520181498 U CN201520181498 U CN 201520181498U CN 204512051 U CN204512051 U CN 204512051U
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- oil
- passage
- valve
- proportional reversing
- controller
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Abstract
The utility model relates to oil circuit control technique field, disclose a kind of oil circuit flow pressure control device, comprise valve seat, be located at the oil inlet passage in valve seat, oil discharge passage, drainback passage, the top of valve seat is provided with proportional reversing valve, P mouth on proportional reversing valve, A mouth, T mouth respectively with oil inlet passage, oil discharge passage, drainback passage is communicated with, valve seat is also provided with and oil inlet passage, the constant difference overflow valve that oil discharge passage connects, the flow-off of constant difference overflow valve is communicated with drainback passage, proportional reversing valve is provided with controller, it is outer and be provided with iron core in end that proportional reversing valve is stretched out in spool one end of proportional reversing valve, the outside of iron core is provided with the coil be communicated with controller, oil discharge passage side is provided with pressure transducer, pressure transducer is connected with controller.
Description
Technical field
The utility model relates to oil circuit control technique field, particularly relates to a kind of oil circuit flow pressure control device.
Background technique
In hydraulic system, pressure constant in oil circuit control and flow for the stability of the oil-way system of whole system and Security most important, if pressure transient in oil circuit, can device damage be caused, even cause serious accident; The oil-way system of some equipment is all very responsive to pressure, flow, such as injection machine industry, and whether stablizing of oil pressure directly can affect quality of product, and oil pressure control system common is at present difficult to control oil pressure and flow accurately.
Model utility content
The utility model, in order to solve the problems referred to above in prior art, provides and a kind ofly to control accurately, regulate oil liquid pressure in oil discharge passage and flow, ensure the oil circuit flow pressure control device that oil circuit is stable.
To achieve these goals, the utility model adopts following technological scheme:
A kind of oil circuit flow pressure control device, comprise valve seat, be located at the oil inlet passage in valve seat, oil discharge passage, drainback passage, the top of described valve seat is provided with proportional reversing valve, P mouth on proportional reversing valve, A mouth, T mouth respectively with oil inlet passage, oil discharge passage, drainback passage is communicated with, described valve seat is also provided with and oil inlet passage, the constant difference overflow valve that oil discharge passage connects, the flow-off of described constant difference overflow valve is communicated with drainback passage, described proportional reversing valve is provided with controller, it is outer and be provided with iron core in end that proportional reversing valve is stretched out in spool one end of proportional reversing valve, the outside of iron core is provided with the coil be communicated with controller, described oil discharge passage side is provided with pressure transducer, described pressure transducer is connected with controller.
Pressure and the flow of drainback passage is set in controller, fluid enters in proportional reversing valve from oil inlet passage, controller is to coil power supply, coil electromagnetism induction forms magnetic field suction iron core and moves, iron core band movable valve plug moves, pressure transducer detects the oil pressure in oil discharge passage in real time, when force value and setting value do not meet, pressure sensor signal passes to controller, controller controls spool aperture by coil, when pressure transducer detects that pressure is identical with setting value, spool stops action, constant difference overflow valve can regulate oil inlet passage automatically, fluid pressure reduction in oil discharge passage, thus the stability of flow in guarantee oil discharge passage, fluid unnecessary in oil inlet passage flows in return tube from flow-off, whole process is dynamic adjustments, keep oil discharge passage inner fluid pressure, the transient equiliblium of flow.
As preferably, the outer end of described iron core is also connected with displacement transducer, and described displacement transducer is connected with controller.Displacement transducer can detect the displacement amount of spool accurately, thus ensures the repeatability of valve core opening degree.
Therefore, the utility model has and can control accurately, regulates oil liquid pressure in oil discharge passage and flow, ensures the beneficial effect that oil circuit is stable.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the utility model schematic diagram.
In figure: valve seat 1 oil inlet passage 2 oil discharge passage 3 drainback passage 4 proportional reversing valve 5 spool 50 iron core 51 coil 52 constant difference overflow valve 6 controller 7 pressure transducer 8 displacement transducer 9
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
A kind of oil circuit flow pressure control device as depicted in figs. 1 and 2, comprise valve seat 1, be located at the oil inlet passage 2 in valve seat, oil discharge passage 3, drainback passage 4, the top of valve seat is provided with proportional reversing valve 5, P mouth on proportional reversing valve, A mouth, T mouth respectively with oil inlet passage, oil discharge passage, drainback passage is communicated with, valve seat 1 is also provided with and oil inlet passage, the constant difference overflow valve 6 that oil discharge passage connects, the flow-off of constant difference overflow valve is communicated with drainback passage 4, proportional reversing valve 5 is provided with controller 7, it is outer and be provided with iron core 51 in end that proportional reversing valve is stretched out in spool 50 one end of proportional reversing valve, the outside of iron core is provided with the coil 52 be communicated with controller, iron core and coil form electromagnet, oil discharge passage 4 side is provided with pressure transducer 8, pressure transducer is connected with controller, the outer end of iron core 51 is also connected with displacement transducer 9, and displacement transducer is connected with controller.
P mouth on proportional reversing valve, A mouth, T mouth respectively with oil inlet passage, oil discharge passage, drainback passage is communicated with, B mouth on proportional reversing valve is closed, by pressure and the flow of controller setting drainback passage, fluid enters in proportional reversing valve from oil inlet passage, controller is to coil power supply, coil electromagnetism induction forms magnetic field suction iron core and moves, iron core band movable valve plug moves, P mouth, A mouth is communicated with, pressure transducer detects the oil pressure in oil discharge passage in real time, when force value and setting value do not meet, pressure sensor signal feeds back to controller, controller controls spool aperture by coil, can be quantized the movement of spool by displacement transducer, guarantee that valve core opening degree is repeatable, control valve core opening degree accurately, namely flow is controlled accurately, when pressure transducer detects that pressure is identical with setting value, spool stops action, now the position of spool can be fed back to controller by displacement transducer record, constant difference overflow valve can regulate the fluid pressure reduction in oil inlet passage, oil discharge passage automatically, thus the stability of flow in guarantee oil discharge passage, fluid unnecessary in oil inlet passage flows in return tube from flow-off, and whole process is dynamic adjustments, keeps the transient equiliblium of oil discharge passage inner fluid pressure, flow.Therefore, the utility model has and can control accurately, regulates oil liquid pressure in oil discharge passage and flow, ensures the beneficial effect that oil circuit is stable.
Claims (2)
1. an oil circuit flow pressure control device, comprise valve seat, be located at the oil inlet passage in valve seat, oil discharge passage, drainback passage, it is characterized in that, the top of described valve seat is provided with proportional reversing valve, P mouth on proportional reversing valve, A mouth, T mouth respectively with oil inlet passage, oil discharge passage, drainback passage is communicated with, described valve seat is also provided with and oil inlet passage, the constant difference overflow valve that oil discharge passage connects, the flow-off of described constant difference overflow valve is communicated with drainback passage, described proportional reversing valve is provided with controller, it is outer and be provided with iron core in end that proportional reversing valve is stretched out in spool one end of proportional reversing valve, the outside of iron core is provided with the coil be communicated with controller, described oil discharge passage side is provided with pressure transducer, described pressure transducer is connected with controller.
2. a kind of oil circuit flow pressure control device according to claim 1, it is characterized in that, the outer end of described iron core is also connected with displacement transducer, and described displacement transducer is connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520181498.6U CN204512051U (en) | 2015-03-27 | 2015-03-27 | A kind of oil circuit flow pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520181498.6U CN204512051U (en) | 2015-03-27 | 2015-03-27 | A kind of oil circuit flow pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204512051U true CN204512051U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520181498.6U Active CN204512051U (en) | 2015-03-27 | 2015-03-27 | A kind of oil circuit flow pressure control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204512051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321954A (en) * | 2016-08-17 | 2017-01-11 | 中国航空工业集团公司西安飞行自动控制研究所 | Displacement sensor positioning structure used for hydraulic sliding valve element |
-
2015
- 2015-03-27 CN CN201520181498.6U patent/CN204512051U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321954A (en) * | 2016-08-17 | 2017-01-11 | 中国航空工业集团公司西安飞行自动控制研究所 | Displacement sensor positioning structure used for hydraulic sliding valve element |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |