CN212079790U - High-speed switch valve pilot control proportional valve with position closed loop - Google Patents
High-speed switch valve pilot control proportional valve with position closed loop Download PDFInfo
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- CN212079790U CN212079790U CN201922349173.5U CN201922349173U CN212079790U CN 212079790 U CN212079790 U CN 212079790U CN 201922349173 U CN201922349173 U CN 201922349173U CN 212079790 U CN212079790 U CN 212079790U
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Abstract
The utility model discloses a high-speed switch valve pilot control takes position closed loop's proportional valve, including pilot part subassembly, main valve core and proportional valve body, the utility model discloses the beneficial effect who reaches is: through setting up guide's part subassembly and main valve core to through the position of displacement sensor real-time supervision main valve core displacement, give control circuit board with the signal feedback, control circuit board carries out closed-loop control, improves the control accuracy, the utility model discloses utilize displacement sensor, detect and feed back main valve core displacement, improve the precision of flow output, the flow hysteresis has been reduced, the displacement of bridge circuit control main valve core that uses four high-speed switch valves to constitute, main valve core displacement feeds back to control circuit board through displacement sensor, thereby make control circuit board can form closed-loop control, thereby improve the control accuracy and reduce the hysteresis, guide's part subassembly uses spherical seal's high-speed switch valve to improve antipollution ability, reduces the control degree of difficulty, reduces energy consumption loss.
Description
Technical Field
The utility model relates to a proportional valve, in particular to high-speed switch valve pilot control takes position closed loop's proportional valve belongs to proportional valve technical field.
Background
The proportional valve is a novel hydraulic control device. On the common pressure valve, flow valve and direction valve, the proportional electromagnet is used to replace the original control part, and the pressure, flow or direction of oil flow is controlled remotely according to the input electric signal. The proportional valve generally has pressure compensation performance, the output pressure and flow can not be influenced by load change, and the proportional valve is widely applied to the fields of metallurgy, ships and engineering machinery due to higher control precision and frequency response
At present, the main valve feedback form of the large-flow proportional valve applied in the market adopts displacement-electric feedback, and the pressure of two cavities of the main valve core is controlled after the displacement of the main valve core is collected and fed back to a controller. The pilot valve of main valve generally adopts the proportional valve, because four throttle limit coupling of proportional valve case are adjusted, there is the big and low problem of control degree of freedom of power loss to adopt analog signal control, cause the problem that control cost is high and the signal easily receives the interference, current proportional valve receives the pollution easily simultaneously, thereby reduced the controllability of current proportional valve, make the use of current proportional valve control degree of difficulty greatly increased, improved the consumption that the proportional valve used the energy consumption simultaneously.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome prior art's defect, provide a high-speed switch valve pilot control area position closed loop's proportional valve, set up guide's part subassembly and main valve core, solved current high-speed switch valve pilot control area position closed loop's proportional valve's problem
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a high-speed switch valve pilot control takes position closed loop's proportional valve, including pilot part subassembly, main valve core and proportional valve body, the pilot part subassembly includes control circuit board, displacement sensor, first normally closed high-speed switch valve, first normally open high-speed switch valve, second normally closed high-speed switch valve, second normally open high-speed switch valve, secondary pressure limiting valve, first fusiformis slide valve, second fusiformis slide valve and check valve, the P mouth system main oil supply of proportional valve body and the oil inlet intercommunication of check valve, the oil-out of check valve and the oil inlet intercommunication of main valve core, the A mouth of proportional valve body, B mouth working oil port and the oil-out intercommunication of main valve core, the oil inlet of main valve core and the T mouth system main oil return intercommunication of proportional valve body.
As an optimized scheme of the utility model, the PP mouth pilot control fuel feeding of proportional valve body and the oil inlet intercommunication of first normally closed high-speed ooff valve, the high-speed ooff valve of second normally closed, the oil-out of first normally closed high-speed ooff valve, the high-speed ooff valve of second normally closed communicates with the oil inlet of first normally open high-speed ooff valve, the normally open high-speed ooff valve of second respectively.
As an optimized scheme of the utility model, the oil-out of first normally closed high-speed ooff valve, first normally open high-speed ooff valve and the lower control chamber of main valve core intercommunication, the oil-out of second normally closed high-speed ooff valve, second normally open high-speed ooff valve and the last control chamber intercommunication of main valve core.
As an optimized scheme of the utility model, the oil-out of first normally open high speed ooff valve, the normally open high speed ooff valve of second and the T mouth guide oil return intercommunication of proportional valve body, the LS mouth load pressure feedback signal oil of proportional valve body and the oil inlet intercommunication of second fusiformis slide valve, the oil-out of second fusiformis slide valve is connected with the A mouth of check valve, first fusiformis slide valve respectively.
As an optimized scheme of the utility model, the A mouth of second fusiformis slide valve is connected with the LS mouth load pressure feedback signal oil of proportional valve body, first fusiformis slide valve is connected with secondary pressure limiting valve oil inlet, the oil-out of secondary pressure limiting valve is connected with the T mouth guide's oil return of proportional valve body.
As an optimized scheme of the utility model, first normally closed high-speed ooff valve, first normally open high-speed ooff valve, second normally closed high-speed ooff valve, second normally open high-speed ooff valve, displacement sensor all are connected with control circuit board's input.
The utility model discloses the beneficial effect who reaches is: through setting up guide's part subassembly and main valve core to through the position of displacement sensor real-time supervision main valve core displacement, give control circuit board with the signal feedback, control circuit board carries out closed-loop control, improves the control accuracy, the utility model discloses utilize displacement sensor, detect and feed back main valve core displacement, improve the precision of flow output, the flow hysteresis has been reduced, the displacement of bridge circuit control main valve core that uses four high-speed switch valves to constitute, main valve core displacement feeds back to control circuit board through displacement sensor, thereby make control circuit board can form closed-loop control, thereby improve the control accuracy and reduce the hysteresis, guide's part subassembly uses spherical seal's high-speed switch valve to improve antipollution ability, reduces the control degree of difficulty, reduces energy consumption loss.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a pilot part assembly; 11. a control circuit board; 12. a displacement sensor; 13. a first normally closed high-speed switching valve; 14. A first normally open high speed switch valve; 15. a second normally closed high-speed switching valve; 16. a second normally open high speed switch valve; 17. a secondary pressure limiting valve; 18. a first shuttle valve; 19. a second shuttle valve; 110. a one-way valve; 2. a main valve element; 3. a proportional valve body.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Examples
As shown in fig. 1, the utility model provides a high-speed switch valve pilot control takes position closed loop's proportional valve, including pilot part subassembly 1, main valve core 2 and proportional valve body 3, pilot part subassembly 1 includes control circuit board 11, displacement sensor 12, first normally closed high-speed switch valve 13, first normally open high-speed switch valve 14, second normally closed high-speed switch valve 15, second normally open high-speed switch valve 16, secondary pressure limiting valve 17, first shuttle 18, second shuttle 19 and check valve 110, the P mouth of proportional valve body 3 communicates with the oil inlet of check valve 110, the highest pressure of P mouth is 315Bar, the oil outlet of check valve 110 communicates with the oil inlet of main valve core 2, the A mouth of proportional valve body 3, the B mouth communicates with the oil outlet of main valve core 2, the oil inlet of main valve core 2 communicates with the T mouth of proportional valve body 3, the T mouth allows maximum pressure 25Bar, the controllability of the utility model is improved, the control difficulty of the utility model is reduced, and the energy consumption loss during the use of the utility model is reduced.
The PP port of the proportional valve body 3 is communicated with the oil inlets of the first normally closed high-speed switch valve 13 and the second normally closed high-speed switch valve 15, the pressure of the PP port is 25Bar, the oil outlets of the first normally closed high-speed switch valve 13 and the second normally closed high-speed switch valve 15 are respectively communicated with the oil inlets of the first normally open high-speed switch valve 14 and the second normally open high-speed switch valve 16, the anti-pollution capacity is enhanced, the controllability is improved, and the control difficulty is reduced, the oil outlets of the first normally closed high-speed switch valve 13 and the first normally open high-speed switch valve 14 are communicated with the lower control cavity of the main valve core 2, the oil outlets of the second normally closed high-speed switch valve 15 and the second normally open high-speed switch valve 16 are communicated with the upper control cavity of the main valve core 2, so that compared with the existing large-flow proportional valve, the first normally closed high-speed switch valve 13, the first normally open high-speed, A bridge circuit consisting of four high-speed switch valves of a second normally-open high-speed switch valve 16 is used as a pilot stage to control the displacement of a main valve core 2, the displacement of the main valve core 2 is detected and fed back to a control circuit board 11 through a displacement sensor 12 to form a closed loop, thereby achieving the purpose of improving the control precision and reducing the hysteresis loop, a traditional pilot proportional valve is replaced by a high-speed switch valve with spherical sealing in a pilot part, the energy consumption loss is reduced, oil outlets of a first normally-open high-speed switch valve 14 and a second normally-open high-speed switch valve 16 are communicated with a T0 port of a proportional valve body 3, a T0 port allows the maximum pressure of 25Bar, LS port load pressure feedback signal oil of the proportional valve body 3 is communicated with an oil inlet of a second shuttle-shaped slide valve 19, an oil outlet of the second shuttle-shaped slide valve 19 is respectively connected with a one-way valve 110 and an A port of the first shuttle-shaped slide valve, the A port of the second shuttle-shaped slide valve 19 is connected with the LS port of the proportional valve body 3, the first shuttle-shaped slide valve 18 is connected with the oil inlet of the secondary pressure limiting valve 17, the oil outlet of the secondary pressure limiting valve 17 is connected with the T0 port of the proportional valve body 3, so that the control circuit board 11 can carry out closed-loop control, and the control of the control circuit board 11 is improved
The system precision has reduced this practical use cost, makes this practical control cost reduce and the control signal that control circuit board 11 sent is difficult to receive the interference, thereby prevent that the great and low problem of control degree of freedom of power loss from appearing in the proportional valve, first normally closed high-speed ooff valve 13, first normally open high-speed ooff valve 14, second normally closed high-speed ooff valve 15, second normally open high-speed ooff valve 16, displacement sensor 12 all is connected with control circuit board 11's input, make this practicality can detect and feed back 2 displacements of main valve core through displacement sensor 12, has improved flow output's precision simultaneously, has reduced the possibility that the hysteresis appears in the flow, has improved greatly this practical controllability.
Specifically, the control circuit board 11 controls the first normally open high-speed switch valve 14, the first normally closed high-speed switch valve 13, the second normally closed high-speed switch valve 15 and the second normally open high-speed switch valve 16 to perform high-speed switching action, so that main valve element 2 displaces, at the same time displacement sensor 12 collects displacement signal of main valve element 2 of proportional valve body 3 in real time, displacement sensor 12 then transmits a signal of the displacement of main poppet 2 to control circuit board 11, then the control circuit board 11 adjusts the first normally open high-speed switch valve 14, the first normally closed high-speed switch valve 13, the second normally closed high-speed switch valve 15 and the second normally open high-speed switch valve 16 according to the transmitted real-time signal of the displacement of the main valve element 2 to perform high-speed switching action, make control circuit board 11 can realize closed-loop control for control circuit board 11 can the output of flow control, make this practical flow output's precision more accurate.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A high-speed switch valve pilot control area position closed loop proportional valve is characterized by comprising a pilot part assembly (1), a main valve core (2) and a proportional valve body (3), wherein the pilot part assembly (1) comprises a control circuit board (11), a displacement sensor (12), a first normally closed high-speed switch valve (13), a first normally open high-speed switch valve (14), a second normally closed high-speed switch valve (15), a second normally open high-speed switch valve (16), a secondary pressure limiting valve (17), a first shuttle-shaped slide valve (18), a second shuttle-shaped slide valve (19) and a one-way valve (110), a port P of the proportional valve body (3) is communicated with an oil inlet of the one-way valve (110), an oil outlet of the one-way valve (110) is communicated with an oil inlet of the main valve core (2), and a port A and a port B port of the proportional valve body (3) are communicated with an oil outlet of the main valve core (2), an oil inlet of the main valve core (2) is communicated with a T port of the proportional valve body (3).
2. The high-speed switch valve pilot control area position closed loop proportional valve of claim 1, characterized in that, the PP mouth of proportional valve body (3) and the oil inlet of first normally closed high-speed switch valve (13), second normally closed high-speed switch valve (15) communicate, the oil outlet of first normally closed high-speed switch valve (13), second normally closed high-speed switch valve (15) respectively with the oil inlet of first normally open high-speed switch valve (14), second normally open high-speed switch valve (16) communicate.
3. A high-speed switch valve pilot control proportional valve with position closed loop according to claim 1, characterized in that the oil outlets of the first normally closed high-speed switch valve (13) and the first normally open high-speed switch valve (14) are communicated with the lower control cavity of the main valve core (2), and the oil outlets of the second normally closed high-speed switch valve (15) and the second normally open high-speed switch valve (16) are communicated with the upper control cavity of the main valve core (2).
4. The high-speed switch valve pilot control proportional valve with position closed loop according to claim 1, wherein oil outlets of the first normally open high-speed switch valve (14) and the second normally open high-speed switch valve (16) are communicated with a port T0 of a proportional valve body (3), a port LS of the proportional valve body (3) is communicated with an oil inlet of a second shuttle-shaped slide valve (19), and an oil outlet of the second shuttle-shaped slide valve (19) is respectively connected with a port A of a check valve (110) and a port A of a first shuttle-shaped slide valve (18).
5. The high-speed switch valve pilot control proportional valve with position closed loop according to claim 1, characterized in that an A port of the second shuttle-shaped slide valve (19) is connected with an LS port of the proportional valve body (3), the first shuttle-shaped slide valve (18) is connected with an oil inlet of the secondary pressure limiting valve (17), and an oil outlet of the secondary pressure limiting valve (17) is connected with a T0 port of the proportional valve body (3).
6. The proportional valve with position closed loop of pilot control of high-speed switch valve according to claim 1, characterized in that the first normally closed high-speed switch valve (13), the first normally open high-speed switch valve (14), the second normally closed high-speed switch valve (15), the second normally open high-speed switch valve (16), and the displacement sensor (12) are all connected with the input end of the control circuit board (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922349173.5U CN212079790U (en) | 2019-12-24 | 2019-12-24 | High-speed switch valve pilot control proportional valve with position closed loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922349173.5U CN212079790U (en) | 2019-12-24 | 2019-12-24 | High-speed switch valve pilot control proportional valve with position closed loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212079790U true CN212079790U (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922349173.5U Active CN212079790U (en) | 2019-12-24 | 2019-12-24 | High-speed switch valve pilot control proportional valve with position closed loop |
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| Country | Link |
|---|---|
| CN (1) | CN212079790U (en) |
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Effective date of registration: 20230210 Address after: 412000 No. 6, Chadong Road, Hengdian Industrial Park, Liling Economic Development Zone, Zhuzhou City, Hunan Province Patentee after: Hunan Valzhibao Digital Hydraulic Components Co.,Ltd. Address before: No.99, energy saving Avenue, energy saving and environmental protection industrial park, huaikou Town, Jintang County, Chengdu, Sichuan 610000 Patentee before: Chengdu vazhibao digital hydraulic equipment Co.,Ltd. |