CN103452935A - Hydraulic valve for closed system with pump output pressure not interfered by load - Google Patents
Hydraulic valve for closed system with pump output pressure not interfered by load Download PDFInfo
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- CN103452935A CN103452935A CN2013103760539A CN201310376053A CN103452935A CN 103452935 A CN103452935 A CN 103452935A CN 2013103760539 A CN2013103760539 A CN 2013103760539A CN 201310376053 A CN201310376053 A CN 201310376053A CN 103452935 A CN103452935 A CN 103452935A
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Abstract
The invention discloses a hydraulic valve for a closed system with pump output pressure not interfered by load. The valve comprises a valve body (1), a pressure-regulating lock valve A (2), a check valve A (3), a check valve B (4), a pressure-regulating lock valve B (5), a gasket (6) and a socket head cap screw (7), wherein the pressure-regulating lock valve A (2), the check valve A (3), the check valve B (4) and the pressure-regulating lock valve B (5) are respectively connected with the two sides of the valve body (1) through screw threads; the hydraulic valve is fix to an integrating block through the socket head cap screw (7); each oil port of the hydraulic valve is respectively communicated with an oil port of an external bidirectional hydraulic pump and two cavities of an action element respectively. During work, the hydraulic pressure of output oil of the external bidirectional hydraulic pump is regulated by pressure-regulating lock valves and is not limited by the type of the load, and after the output oil is conveyed to the correct position, the action element can be reliably locked in the original position. The hydraulic valve is simple in structure and convenient to mount and use, the output of the hydraulic pump is not affected by the load, and the system is easy to precisely control.
Description
Technical field
The present invention relates to a kind of closed system hydrovalve, particularly a kind of pump delivery pressure is not subject to the closed system hydrovalve of load disturbance.
Background technique
Using actuating motor or stepper motor to drive during the bidirectional hydraulic pump carries out the closed type hydraulic system of forward and reverse output control, working connection only arranges Pilot operated check valve usually, and during system works, the oil hydraulic pump outlet pressure is easily with the fluctuation of load, the output degree of regulation is poor, is not easy to realize accurate control.
Summary of the invention
The purpose of this invention is to provide the closed system hydrovalve that a kind of pump delivery pressure is not subject to load disturbance, solve oil hydraulic pump delivery pressure in closed system and disturbed by the fluctuation of load, be not easy the problem that realizes that output is accurately controlled.
A kind of pump delivery pressure is not subject to the closed system hydrovalve of load disturbance, comprising: valve body, pressure regulation lock valve A, one-way valve A, one-way valve B, pressure regulation lock valve B, packing ring, socket head screw, main valve plug A, O RunddichtringO, main valve plug B, poppet valve core A, spring A, pressure regulating screw A, poppet valve core B, spring B and pressure regulating screw B.Described pressure regulation lock valve A comprises: poppet valve core A, spring A and pressure regulating screw A, described pressure regulation lock valve B is identical with pressure regulation lock valve A structure, comprising: poppet valve core B, spring B and pressure regulating screw B.There is push rod at main valve plug A and main valve plug B two ends, main valve plug A and main valve plug B are built in respectively in the valve opening of valve body both sides, poppet valve core A withstands main valve plug A, spring A is socketed on poppet valve core A, pressure regulating screw A is connected with valve body screw thread, poppet valve core B withstands main valve plug B, and it is upper that spring B is socketed on poppet valve core B, and pressure regulating screw B is connected with valve body screw thread.One-way valve A and one-way valve B are threaded with the valve body both sides respectively.There are four hydraulic fluid ports the valve body bottom surface, is respectively A mouth, B mouth, C mouth, D mouth, and there are respectively four seal grooves in the hydraulic fluid port outlet port of valve body bottom surface, and four O RunddichtringOs are corresponding being placed in four seal grooves of valve body respectively.The valve body end face has four tapped through holes, and packing ring and socket head screw all have four, and four packing ring correspondences are socketed on four socket head screws, and four socket head screws are placed in respectively in four tapped through holes of valve body end face and are spirally connected.
A kind of pump delivery pressure is not fixed on integrated package by socket head screw with hydrovalve by the closed system of load disturbance, hydrovalve A mouth, B mouth communicate with external bidirectional hydraulic pump A mouth, B mouth respectively, hydrovalve C mouth, D mouth communicate with executive component two chambeies respectively, and executive component comprises oil hydraulic cylinder or oil hydraulic motor.When to hydrovalve D mouth direction outputting power, bidirectional hydraulic pump A mouth output high pressure oil enters hydrovalve through hydrovalve A mouth, promoting main valve plug A moves, hold up the poppet valve core A of pressure regulation lock valve A, high pressure oil enters main valve plug B near pressure regulation lock valve B side chamber through main valve plug A, hold up the poppet valve core B of pressure regulation lock valve B, by hydrovalve D mouth, output to executive component one side, by hydrovalve C mouth, pressure regulation lock valve A, the one-way valve B through being opened, hydrovalve B mouth flow back to bidirectional hydraulic pump B mouth in oil return; When to hydrovalve C mouth direction outputting power, bidirectional hydraulic pump B mouth output high pressure oil enters hydrovalve through hydrovalve B mouth, promoting main valve plug B moves, hold up the poppet valve core B of pressure regulation lock valve B, high pressure oil enters main valve plug A near pressure regulation lock valve A side chamber through main valve plug B, hold up the poppet valve core A of pressure regulation lock valve A, by hydrovalve C mouth, output to the executive component opposite side, by hydrovalve D mouth, pressure regulation lock valve B, the one-way valve A through being opened, hydrovalve A mouth flow back to bidirectional hydraulic pump A mouth in oil return; When system output puts in place, as long as the bidirectional hydraulic pump quits work, hydrovalve pressure regulation lock valve A and pressure regulation lock valve B all close, making to export the executive component original position keeps, bidirectional hydraulic pump delivery pressure is regulated by pressure regulating screw A, the pressure regulating screw B of pressure regulation lock valve A, pressure regulation lock valve B, the impact that is not subject to the load vibration or impacts.
The present invention can make oil hydraulic pump output not limited by loadtype, makes the system output smoothing, can realize accurate control; Can realize that the oil hydraulic pump delivery pressure is stepless adjustable according to system requirements; There is the Pilot operated check valve function, can realize the executive component secure ratcs; Plank frame, easy to install.
The accompanying drawing explanation
A kind of pump delivery pressure of Fig. 1 is not subject to the overall assembling schematic diagram of the closed system of load disturbance with hydrovalve.
A kind of pump delivery pressure of Fig. 2 is not subject to the internal structure schematic diagram of the closed system of load disturbance with hydrovalve.
A kind of pump delivery pressure of Fig. 3 is not subject to the closed system of load disturbance to arrange schematic diagram with each hydraulic fluid port of hydrovalve.
1. valve body 2. pressure regulation lock valve A 3. one-way valve A 4. one-way valve B 5. pressure regulation lock valve B 6. packing ring 7. socket head screw 8. main valve plug A 9.O RunddichtringO 10. main valve plug B 11. poppet valve core A 12. spring A 13. pressure regulating screw A 14. poppet valve core B 15. spring B 16. pressure regulating screw B.
Embodiment
A kind of pump delivery pressure is not subject to the closed system hydrovalve of load disturbance, comprising: valve body 1, pressure regulation lock valve A2, one-way valve A3, one-way valve B4, pressure regulation lock valve B5, packing ring 6, socket head screw 7, main valve plug A8, O RunddichtringO 9, main valve plug B10, poppet valve core A11, spring A12, pressure regulating screw A13, poppet valve core B14, spring B 15 and pressure regulating screw B16.Described pressure regulation lock valve A2 comprises: poppet valve core A11, spring A12 and pressure regulating screw A13, described pressure regulation lock valve B5 is identical with pressure regulation lock valve A2 structure, comprising: poppet valve core B14, spring B 15 and pressure regulating screw B16.There is push rod at main valve plug A8 and main valve plug B10 two ends, main valve plug A8 and main valve plug B10 are built in respectively in valve body 1 both sides valve opening, poppet valve core A11 withstands main valve plug A8, spring A12 is socketed on poppet valve core A11, pressure regulating screw A13 is threaded with valve body 1, poppet valve core B14 withstands main valve plug B10, and it is upper that spring B 15 is socketed on poppet valve core B14, and pressure regulating screw B16 is threaded with valve body 1.One-way valve A3 and one-way valve B4 are threaded with valve body 1 both sides respectively.There are four hydraulic fluid ports valve body 1 bottom surface, is respectively A mouth, B mouth, C mouth, D mouth, and there are respectively four seal grooves in the hydraulic fluid port outlet port of valve body 1 bottom surface, and four O RunddichtringOs 9 are corresponding being placed in four seal grooves of valve body 1 respectively.Valve body 1 end face has four tapped through holes, and packing ring 6 and socket head screw 7 all have four, and four packing ring 6 correspondences are socketed on four socket head screws 7, and four socket head screws 7 are placed in respectively in four tapped through holes of valve body 1 end face and are spirally connected.
A kind of pump delivery pressure is not fixed on integrated package by socket head screw 7 with hydrovalve by the closed system of load disturbance, hydrovalve A mouth, B mouth communicate with external bidirectional hydraulic pump A mouth, B mouth respectively, hydrovalve C mouth, D mouth communicate with executive component two chambeies respectively, as oil hydraulic cylinder or oil hydraulic motor.When to hydrovalve D mouth direction outputting power, bidirectional hydraulic pump A mouth output high pressure oil enters hydrovalve through hydrovalve A mouth, promoting main valve plug A8 moves, hold up the poppet valve core A11 of pressure regulation lock valve A2, high pressure oil enters main valve plug B10 near pressure regulation lock valve B5 side chamber through main valve plug A8, hold up the poppet valve core B14 of pressure regulation lock valve B5, output to executive component one side by hydrovalve D mouth, by hydrovalve C mouth, pressure regulation lock valve A2, the one-way valve B4 through being opened, hydrovalve B mouth flow back to bidirectional hydraulic pump B mouth in oil return; When to hydrovalve C mouth direction outputting power, bidirectional hydraulic pump B mouth output high pressure oil enters hydrovalve through hydrovalve B mouth, promoting main valve plug B10 moves, hold up the poppet valve core B14 of pressure regulation lock valve B5, high pressure oil enters main valve plug A8 near pressure regulation lock valve A side chamber through main valve plug B10, hold up the poppet valve core A11 of pressure regulation lock valve A2, output to the executive component opposite side by hydrovalve C mouth, by hydrovalve D mouth, pressure regulation lock valve B5, the one-way valve A3 through being opened, hydrovalve A mouth flow back to bidirectional hydraulic pump A mouth in oil return.When system output puts in place, as long as the bidirectional hydraulic pump quits work, hydrovalve pressure regulation lock valve A2 and pressure regulation lock valve B5 all close, making to export the executive component original position keeps, bidirectional hydraulic pump delivery pressure is regulated by pressure regulating screw A13, the pressure regulating screw B16 of pressure regulation lock valve A2, pressure regulation lock valve B5, the impact that is not subject to the load vibration or impacts.
Claims (1)
1. a pump delivery pressure is not subject to the closed system hydrovalve of load disturbance, it is characterized in that comprising: valve body (1), pressure regulation lock valve A(2), one-way valve A(3), one-way valve B(4), pressure regulation lock valve B(5), packing ring (6), socket head screw (7), main valve plug A(8), O RunddichtringO (9), main valve plug B(10), poppet valve core A(11), spring A(12), pressure regulating screw A(13), poppet valve core B(14), spring B (15) and pressure regulating screw B(16); Described pressure regulation lock valve A(2), comprise: poppet valve core A(11), spring A(12) and pressure regulating screw A(13), described pressure regulation lock valve B(5) with pressure regulation lock valve A(2) structure is identical, comprising: poppet valve core B(14), spring B (15) and pressure regulating screw B(16); Main valve plug A(8) and main valve plug B(10) there is push rod at two ends, main valve plug A(8) and main valve plug B(10) be built in respectively in the valve opening of valve body (1) both sides, poppet valve core A(11) withstand main valve plug A(8), spring A(12) be socketed on poppet valve core A(11) on, pressure regulating screw A(13) with valve body (1), be threaded, poppet valve core B(14) withstand main valve plug B(10), spring B (15) is socketed on poppet valve core B(14) upper, pressure regulating screw B(16) with valve body (1), be threaded; One-way valve A(3) and one-way valve B(4) with valve body (1) both sides, be threaded respectively; There are four hydraulic fluid ports valve body (1) bottom surface, is respectively A mouth, B mouth, C mouth, D mouth, and there are respectively four seal grooves in the hydraulic fluid port outlet port of valve body (1) bottom surface, and four O RunddichtringOs (9) correspondence respectively are placed in four seal grooves of valve body (1); Valve body (1) end face has four tapped through holes, packing ring (6) and socket head screw (7) all have four, it is upper that four packing rings (6) correspondence is socketed in four socket head screws (7), and four socket head screws (7) are placed in respectively in four tapped through holes of valve body (1) end face and are spirally connected;
A kind of pump delivery pressure is not fixed on integrated package by socket head screw (7) with hydrovalve by the closed system of load disturbance, hydrovalve A mouth, B mouth communicate with external bidirectional hydraulic pump A mouth, B mouth respectively, hydrovalve C mouth, D mouth communicate with executive component two chambeies respectively, as oil hydraulic cylinder or oil hydraulic motor, when to hydrovalve D mouth direction outputting power, bidirectional hydraulic pump A mouth output high pressure oil enters hydrovalve through hydrovalve A mouth, promote main valve plug A(8) mobile, picking-up pressure regulation lock valve A(2) poppet valve core A(11), high pressure oil is through main valve plug A(8) enter main valve plug B(10) near pressure regulation lock valve B(5) the side chamber, picking-up pressure regulation lock valve B(5) poppet valve core B(14), output to executive component one side by hydrovalve D mouth, oil return is the pressure regulation lock valve A(2 through being opened by hydrovalve C mouth), one-way valve B(4), hydrovalve B mouth flows back to bidirectional hydraulic pump B mouth, when to hydrovalve C mouth direction outputting power, bidirectional hydraulic pump B mouth output high pressure oil enters hydrovalve through hydrovalve B mouth, promote main valve plug B(10) mobile, picking-up pressure regulation lock valve B(5) poppet valve core B(14), high pressure oil is through main valve plug B(10) enter main valve plug A(8) near pressure regulation lock valve A side chamber, picking-up pressure regulation lock valve A(2) poppet valve core A(11), output to the executive component opposite side by hydrovalve C mouth, oil return is the pressure regulation lock valve B(5 through being opened by hydrovalve D mouth), one-way valve A(3), hydrovalve A mouth flows back to bidirectional hydraulic pump A mouth, when system output puts in place, as long as the bidirectional hydraulic pump quits work, hydrovalve pressure regulation lock valve A(2) and pressure regulation lock valve B(5) all close, making to export the executive component original position keeps, bidirectional hydraulic pump delivery pressure is by pressure regulation lock valve A(2), pressure regulation lock valve B(5) pressure regulating screw A(13), pressure regulating screw B(16) regulated the impact that is not subject to load vibration or impacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310376053.9A CN103452935B (en) | 2013-08-27 | 2013-08-27 | A kind of pump delivery pressure is not by the closed system hydrovalve of load disturbance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310376053.9A CN103452935B (en) | 2013-08-27 | 2013-08-27 | A kind of pump delivery pressure is not by the closed system hydrovalve of load disturbance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103452935A true CN103452935A (en) | 2013-12-18 |
| CN103452935B CN103452935B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310376053.9A Active CN103452935B (en) | 2013-08-27 | 2013-08-27 | A kind of pump delivery pressure is not by the closed system hydrovalve of load disturbance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968127A (en) * | 2014-05-22 | 2014-08-06 | 王静 | Pressure valve of oil press |
| CN106382272A (en) * | 2016-10-28 | 2017-02-08 | 北京机械设备研究所 | Proportion direction flow rotary valve with output flow independent of load interference |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937243A (en) * | 1974-09-25 | 1976-02-10 | General Motors Corporation | Pressure control valve |
| CN102022393A (en) * | 2010-12-30 | 2011-04-20 | 常德中联重科液压有限公司 | Rotary valve and rotary control loop using same |
| EP2549124A2 (en) * | 2011-07-19 | 2013-01-23 | Atlantic Fluid Tech S.r.l. | Load supporting valve |
| CN202955297U (en) * | 2012-10-19 | 2013-05-29 | 宁波海伯天工液压有限公司 | Threaded pilot-operated overflow valve |
| CN202955053U (en) * | 2012-10-19 | 2013-05-29 | 宁波海伯天工液压有限公司 | Threaded pilot-operated secondary overflow valve |
| CN103148036A (en) * | 2013-03-19 | 2013-06-12 | 临海市乐建液压件有限公司 | Hydraulic valve |
-
2013
- 2013-08-27 CN CN201310376053.9A patent/CN103452935B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937243A (en) * | 1974-09-25 | 1976-02-10 | General Motors Corporation | Pressure control valve |
| CN102022393A (en) * | 2010-12-30 | 2011-04-20 | 常德中联重科液压有限公司 | Rotary valve and rotary control loop using same |
| EP2549124A2 (en) * | 2011-07-19 | 2013-01-23 | Atlantic Fluid Tech S.r.l. | Load supporting valve |
| CN202955297U (en) * | 2012-10-19 | 2013-05-29 | 宁波海伯天工液压有限公司 | Threaded pilot-operated overflow valve |
| CN202955053U (en) * | 2012-10-19 | 2013-05-29 | 宁波海伯天工液压有限公司 | Threaded pilot-operated secondary overflow valve |
| CN103148036A (en) * | 2013-03-19 | 2013-06-12 | 临海市乐建液压件有限公司 | Hydraulic valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968127A (en) * | 2014-05-22 | 2014-08-06 | 王静 | Pressure valve of oil press |
| CN106382272A (en) * | 2016-10-28 | 2017-02-08 | 北京机械设备研究所 | Proportion direction flow rotary valve with output flow independent of load interference |
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| Publication number | Publication date |
|---|---|
| CN103452935B (en) | 2015-11-18 |
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