CN112576781B - Proportional valve with decompression and reversing functions - Google Patents
Proportional valve with decompression and reversing functions Download PDFInfo
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- CN112576781B CN112576781B CN202011537933.6A CN202011537933A CN112576781B CN 112576781 B CN112576781 B CN 112576781B CN 202011537933 A CN202011537933 A CN 202011537933A CN 112576781 B CN112576781 B CN 112576781B
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- valve core
- oil
- pressure
- cavity
- main valve
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- 230000006837 decompression Effects 0.000 title claims abstract description 25
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 78
- 239000003921 oil Substances 0.000 claims description 142
- 230000001603 reducing effect Effects 0.000 claims description 15
- 239000010687 lubricating oil Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/048—Electromagnetically actuated valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
- F16K31/0613—Sliding valves with cylindrical slides
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a proportional valve with decompression and reversing functions, and belongs to the technical field of hydraulic valves; the invention comprises the following steps: the valve comprises a valve body, a main valve core and two electromagnetic drivers; the main valve core is slidably arranged in the valve body, and the two electromagnetic drivers are respectively arranged at two ends of the main valve core; the main valve core slides leftwards or rightwards so that the high-pressure oil cavity is communicated with the working oil cavity on the corresponding side, and high-pressure oil enters the working oil cavity; the two ends of the main valve core are respectively provided with a pressure stabilizing cavity, and a pressure stabilizing valve core sliding relative to the main valve core is sleeved in the pressure stabilizing cavity; after the high-pressure oil enters the working oil cavity, the high-pressure oil enters the pressure stabilizing cavity through the pressure stabilizing hole so as to drive the pressure stabilizing valve core to axially slide relative to the main valve core and far away from the main valve core, so that the opening degree of the main valve core is adjusted. The proportional valve of the invention can realize reversing, and can decompress in equal proportion and automatically control the oil pressure in the reversing oil way.
Description
Technical Field
The invention relates to the technology of hydraulic valves, in particular to a proportional valve with decompression and reversing functions, and belongs to the technical field of proportional reversing valves.
Background
The proportional pressure reducing valve reduces the working pressure to a certain required outlet pressure through the adjusting action of the electromagnetic driver so as to meet the pressure requirement of a certain branch; the existing proportional pressure reducing valve only reduces pressure of a single working oil port, if two working oil ports are required to be reduced, a reversing valve is additionally arranged to switch oil ways or two proportional pressure reducing valves are arranged, obviously, the cost is greatly increased, a loop is complex, the volume is large, and the failure rate is high.
Therefore, a proportional valve with an automatic pressure reducing effect and capable of meeting the reversing requirement is needed in the prior art, so as to solve the technical problem that the skilled person needs to solve.
Disclosure of Invention
The invention provides a novel proportional valve with decompression and reversing functions, which realizes the dual functions of pressure regulation and reversing by arranging a pressure stabilizing valve core capable of automatically floating according to oil pressure at the end part of a main valve core, so as to solve the technical problem of complex structure when the pressure stabilizing and reversing functions of the proportional valve are realized in the prior art.
The invention provides a proportional valve with decompression and reversing functions, which is used for realizing reversing and stabilizing pressure while decompressing; the invention comprises a valve body, a main valve core and two electromagnetic drivers; the main valve core is slidably arranged in the valve body, and the two electromagnetic drivers are respectively arranged at two ends of the main valve core; a high-pressure oil cavity and two working oil cavities are arranged in the valve body, and the two working oil cavities are respectively positioned at two sides of the high-pressure oil cavity; the high-pressure oil cavity is internally provided with high-pressure oil;
the main valve core slides leftwards or rightwards so that the high-pressure oil cavity is communicated with the working oil cavity on the corresponding side, and high-pressure oil enters the working oil cavity;
The two ends of the main valve core are respectively provided with a pressure stabilizing cavity, and a pressure stabilizing valve core sliding relative to the main valve core is sleeved in the pressure stabilizing cavity;
the side wall of the main valve core is provided with a pressure stabilizing hole which is connected with the pressure stabilizing cavity;
after the high-pressure oil enters the working oil cavity, the high-pressure oil enters the pressure stabilizing cavity through the pressure stabilizing hole so as to drive the pressure stabilizing valve core to axially slide relative to the main valve core and far away from the main valve core, so that the opening degree of the main valve core is adjusted.
The proportional valve with the decompression and reversing functions, wherein the side wall of the main valve core is provided with the oil outlet groove which is used for communicating one of the working oil cavities after the main valve core slides;
The oil outlet groove is of a U-shaped structure in the length direction, and the bottom of the U-shaped structure faces the working oil cavity.
The proportional valve with the decompression and reversing functions is characterized in that springs are respectively arranged at two ends of the main valve core, and the main valve core is installed in the valve body through the springs.
The proportional valve with the decompression and reversing functions comprises the electromagnetic driver, wherein the electromagnetic driver is provided with a driving rod, and the driving rod is contacted with the main valve core through the pressure stabilizing valve core.
The proportional valve with the decompression and reversing functions is characterized in that the pressure stabilizing cavity is a cylindrical cavity with an opening at one end, and the pressure stabilizing valve core is arranged in the pressure stabilizing cavity through the opening; the opening being toward the end of the main spool;
And the high-pressure oil enters the pressure stabilizing cavity so as to enable the pressure stabilizing valve core to move towards the opening direction.
The proportional valve with the decompression and reversing functions is characterized in that an annular oil groove is formed in the radial surface of the pressure stabilizing valve core, and a lubricating oil hole is formed in the bottom of the annular oil groove;
And a blind hole is further formed in the pressure stabilizing valve core and is used for communicating the lubricating oil hole with the pressure stabilizing cavity.
The proportional valve with the decompression and reversing functions, wherein the part of the main valve core for sealing the high-pressure oil cavity is an oil inlet section, and the section of the oil inlet section is in a concave circular arc shape so as to correspond to the high-pressure oil cavity.
The proportional valve with the decompression and reversing functions is characterized in that two oil return cavities are further arranged in the valve body; the two oil return cavities are respectively corresponding to the two ends of the main valve core.
The proportional valve with the decompression and reversing functions is characterized in that a plurality of oil discharge grooves are formed in the end portion of the main valve core, and the oil discharge grooves correspond to the oil return cavities.
The valve body structure of the invention can automatically adjust the oil pressure of the reversing oil way according to the pressure in the working process of the reversing valve, has strong automatic adjusting capability, can also improve the reliability and the working life of the system, and improves the quality of the final product.
Drawings
FIG. 1 is a schematic sectional view of a proportional valve with pressure reducing and reversing functions according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of one side of a proportional valve with pressure reducing and reversing functions according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a main valve core structure of a proportional valve with pressure reducing and reversing functions according to an embodiment of the present invention;
Fig. 4 is a schematic cross-sectional structure of a pressure stabilizing valve core of a proportional valve with pressure reducing and reversing functions according to an embodiment of the present invention.
Detailed Description
The reversing valve body structure of the invention can be made of the following materials, and is not limited to the following materials, for example: valve core, hydraulic matching system, electric control device and other common components.
FIG. 1 is a schematic sectional view of a proportional valve with pressure reducing and reversing functions according to an embodiment of the present invention; and refer to fig. 2 and 3.
The proportional valve with the decompression and reversing functions of the embodiment comprises: a valve body 1, a main valve core 2 and two electromagnetic drivers 9; the main valve core 2 is slidably arranged in the valve body 1, and the two electromagnetic drivers are respectively arranged at two ends of the main valve core 2; a high-pressure oil cavity 3 and two working oil cavities 4 are arranged in the valve body 1, and the two working oil cavities 4 are respectively positioned at two sides of the high-pressure oil cavity 3; high-pressure oil is arranged in the high-pressure oil cavity 3; the high-pressure oil cavity 3 is connected with a hydraulic oil pump in the hydraulic system and is used for releasing high-pressure hydraulic oil through a high-pressure oil port P.
The two working oil cavities 4 are respectively connected with two ends of the executing element so as to execute actions through the oil outlet A or the oil outlet B.
In general, two oil return cavities 5 are also arranged in the valve body 1; the two oil return cavities 5 are respectively corresponding to the two ends of the main valve core.
The oil return chamber 5 is used for being connected with an oil return port T so as to facilitate the discharge of low-pressure oil to the oil tank from the non-working side of the actuator.
The main valve core 1 slides leftwards or rightwards so that the high-pressure oil cavity 3 is communicated with the working oil cavity 4 on the corresponding side, and high-pressure oil enters the working oil cavity 4; as shown in fig. 2, the main spool 1 slides rightward so that the high-pressure oil chamber 3 communicates with the right-side working oil chamber 4.
The two ends of the main valve core 2 are respectively provided with a pressure stabilizing cavity 20, and a pressure stabilizing valve core 6 which slides relative to the main valve core 2 is sleeved in the pressure stabilizing cavity 20; the pressure stabilizing valve element 6 is generally cylindrical in structure.
The side wall of the main valve core 2 is provided with a pressure stabilizing hole 21, and the pressure stabilizing hole 21 is connected with the pressure stabilizing cavity 20 and is used for guiding outside hydraulic oil into the pressure stabilizing cavity 20;
After the high-pressure oil enters the working oil cavity 4, the high-pressure oil enters the pressure stabilizing cavity 20 through the pressure stabilizing hole 21 so as to drive the pressure stabilizing valve core 6 to axially slide relative to the main valve core 2 and far away from the main valve core 2, so that the opening degree of the main valve core 2 is adjusted.
In this embodiment, an oil outlet groove 24 is formed in a side wall of the main valve core 2, and is used for communicating one of the working oil chambers 4 after the main valve core 2 slides;
The oil outlet groove 24 has a U-shaped structure along the length direction, and the bottom of the U-shaped structure faces the working oil cavity 4.
Because the bottom of the U-shaped structure is firstly opened in the working process of the oil outlet groove 24, when the opening degree is smaller, the initial pressure is smaller, and the oil outlet pressure in a weak opening state can be effectively regulated.
In the proportional valve with the decompression and reversing functions of the embodiment, springs 8 are respectively arranged at two ends of the main valve core 2, and the main valve core 2 is installed in the valve body through the springs 8.
The spring 8 can ensure that the main valve core is positioned in the middle of the valve body 1 under the action of no external force, so that the closed state of the valve core is maintained.
In the proportional valve with pressure reducing and reversing functions of the present embodiment, preferably, the electromagnetic actuator has a driving rod 9, and the driving rod 9 is in contact with the main valve element 2 through the pressure stabilizing valve element 6.
The proportional valve with the decompression and reversing functions of the embodiment, specifically, the pressure stabilizing cavity 20 is a cylindrical cavity with an opening at one end, and the pressure stabilizing valve core 6 is installed in the pressure stabilizing cavity 20 through the opening; which is directed towards the end of said main valve element 2; it is obvious that the pressure stabilizing valve core 6 can automatically slide along with the pressure of hydraulic oil in the pressure stabilizing cavity 20.
The high-pressure oil enters the pressure stabilizing chamber 20 to move the pressure stabilizing valve spool 6 toward the opening direction.
The proportional valve structure with the decompression and reversing functions can ensure stable and reliable output pressure, can realize reversing and decompression control on the two working oil ports A and B, and is simple in structure and economical.
The proportional valve with decompression and reversing functions of the embodiment is characterized in that an annular oil groove 63 is formed in the radial surface of the pressure stabilizing valve core 6, and a lubricating oil hole 62 is formed in the bottom of the annular oil groove 63;
The pressure stabilizing valve core 6 is also provided with a blind hole 61, and the blind hole 61 is used for communicating the lubricating oil hole 62 with the pressure stabilizing cavity 20.
In this embodiment, further, the portion of the main valve core 2 for sealing the high-pressure oil cavity 3 is an oil inlet section, and the section of the oil inlet section is in a concave circular arc shape, so as to correspond to the high-pressure oil cavity 3.
As shown in fig. 3, the end of the main valve core 2 is provided with a plurality of oil drain grooves 25, and the oil drain grooves 25 correspond to the oil return cavity 5. The main valve core 2 is also provided with an oil return guide groove 26 for discharging hydraulic oil in the oil discharging process.
As shown in fig. 1 and 2, the working procedure of the present embodiment is as follows.
The electromagnetic force generated by the electromagnetic driver (generally a proportional electromagnet) pushes the pressure stabilizing valve core 6 through the driving rod 9, the pressure stabilizing valve core 6 pushes the main valve core 2 and moves to the right against the spring force of the spring 8, so that the oil outlet groove 24 is communicated with the right working oil cavity 4, and at the moment, the high-pressure oil port P is communicated with the oil outlet B to drive the load to do work.
Meanwhile, the pressure oil in the right working oil cavity 4 enters the pressure stabilizing hole 21 of the main valve core 2, firstly, the pressure stabilizing valve core 6 is pushed to move rightwards, and the driving rod 9 of the electromagnetic driver limits the movement stroke of the pressure stabilizing valve core 6; secondly, the pressure oil in the pressure stabilizing cavity 20 acts on the bottom surface of the pressure stabilizing valve core to push the main valve core 2 to counter against the electromagnetic force of the electromagnetic driver, when the hydraulic force of the right working oil cavity 4 is larger than the electromagnetic force of the electromagnetic driver, the main valve core 2 moves leftwards, so that the oil outlet groove 24 is closed, and the pressure oil in the right working oil cavity 4 is decompressed.
When the hydraulic pressure of the right working oil chamber 4 is smaller than the electromagnetic force of the electromagnetic driver, the main valve core 2 moves to the right, so that the oil outlet groove 24 is communicated with the right working oil chamber 4 again, and the pressure oil of the right working oil chamber 4 is supplemented; the pressure oil in the right working oil chamber 4 is depressurized to a fixed value in such a reciprocating manner, the magnitude of which depends on the magnitude of the control current of the electromagnetic drive; it can be seen that the continuous movement of the main spool 2 keeps the pressure of the right working oil chamber 4 stable.
As can be seen from fig. 3 and 4, the pressure oil in the working oil chamber flows to the annular oil groove 63 through the blind hole 61 and the lubricating oil hole 62 of the pressure stabilizing valve core 6, so that the pressure stabilizing valve core 6 has an annular pressure oil support when sliding in the pressure stabilizing cavity, and the smoothness of the reciprocating motion of the main valve core 2 is ensured; the phenomenon that the pressure stability of the right working oil cavity 4 is affected due to the fact that the movement of the main valve core 2 is blocked because the pressure stabilizing cavity of the main valve core 2 is not smoothly matched with the pressure stabilizing valve core 6 is avoided; meanwhile, the oil inlet section of the main valve core 2 is arranged into a concave arc shape, so that the passing flow rate can be improved, the flow field of hydraulic oil from the P port to the right working oil cavity 4 can be improved, and the pressure stability of the right working oil cavity 4 is facilitated.
The oil drain groove can smoothly drain hydraulic oil and air in the electromagnetic driver, ensure the smoothness of the operation of the electromagnetic driver and is beneficial to the pressure stability of the right working oil cavity 4.
Similarly, when the other side electromagnetic driver is supplied with control current, the pressure of the port a (the left working oil chamber 4) can be kept stable by the above-described actuation process.
Meanwhile, the valve body structure of the invention can automatically adjust the oil pressure of the reversing oil way according to the pressure in the working process of the reversing valve, so that the automatic adjusting capability is high, the reliability and the working life of the system can be improved, and the quality of the final product can be improved.
In addition, the valve body structure of the invention has low manufacturing cost, compact structural design, ingenious structure, stable starting and stopping, convenient use and maintenance and is suitable for the implementation of reversing, decompression and oil pressure regulating actions of various hydraulic systems.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. From the description of the above embodiments, it will be apparent to those skilled in the art that the above example methods may be implemented by means of a superposition of some variants plus the necessary general techniques; of course, the method can also be realized by simplifying some important technical features. Based on such understanding, the technical solution of the present invention essentially or partly contributes to the prior art is: the specific structure of the valve is matched with the method of each embodiment of the invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. A proportional valve with pressure reducing and reversing functions, comprising: the valve comprises a valve body, a main valve core and two electromagnetic drivers; the main valve core is slidably arranged in the valve body, and the two electromagnetic drivers are respectively arranged at two ends of the main valve core; a high-pressure oil cavity and two working oil cavities are arranged in the valve body, and the two working oil cavities are respectively positioned at two sides of the high-pressure oil cavity; the high-pressure oil cavity is internally provided with high-pressure oil;
the main valve core slides leftwards or rightwards so that the high-pressure oil cavity is communicated with the working oil cavity on the corresponding side, and high-pressure oil enters the working oil cavity;
The two ends of the main valve core are respectively provided with a pressure stabilizing cavity, and a pressure stabilizing valve core sliding relative to the main valve core is sleeved in the pressure stabilizing cavity;
the side wall of the main valve core is provided with a pressure stabilizing hole which is connected with the pressure stabilizing cavity;
after the high-pressure oil enters the working oil cavity, the high-pressure oil enters the pressure stabilizing cavity through the pressure stabilizing hole so as to drive the pressure stabilizing valve core to axially slide relative to the main valve core and far away from the main valve core, so that the opening degree of the main valve core is adjusted.
2. The proportional valve with decompression and reversing functions according to claim 1, wherein an oil outlet groove for communicating one of the working oil chambers after the main valve core slides is arranged on the side wall of the main valve core;
The oil outlet groove is of a U-shaped structure in the length direction, and the bottom of the U-shaped structure faces the working oil cavity.
3. The proportional valve with pressure reducing and reversing functions according to claim 1, wherein springs are respectively arranged at two ends of the main valve core, and the main valve core is installed in the valve body through the springs.
4. The proportional valve with pressure reducing and reversing function according to claim 3, wherein the electromagnetic actuator has a drive rod that is in contact with the main spool through the pressure stabilizing spool.
5. The proportional valve with the decompression and reversing functions according to claim 1, wherein the pressure stabilizing cavity is a cylindrical cavity with an opening at one end, and the pressure stabilizing valve core is arranged in the pressure stabilizing cavity through the opening; the opening being toward the end of the main spool;
And the high-pressure oil enters the pressure stabilizing cavity so as to enable the pressure stabilizing valve core to move towards the opening direction.
6. The proportional valve with decompression and reversing functions according to claim 5, wherein an annular oil groove is formed in a radial surface of the pressure stabilizing valve core, and a lubricating oil hole is formed in the bottom of the annular oil groove;
And a blind hole is further formed in the pressure stabilizing valve core and is used for communicating the lubricating oil hole with the pressure stabilizing cavity.
7. The proportional valve with pressure reducing and reversing functions according to claim 1, wherein the portion of the main valve core for sealing the high-pressure oil chamber is an oil inlet section, and the section of the oil inlet section is in a concave circular arc shape so as to correspond to the high-pressure oil chamber.
8. The proportional valve with the decompression and reversing functions according to claim 1, wherein two oil return cavities are further arranged in the valve body; the two oil return cavities are respectively corresponding to the two ends of the main valve core.
9. The proportional valve with pressure reducing and reversing functions according to claim 8, wherein a plurality of oil drain grooves are provided at an end portion of the main spool, the oil drain grooves corresponding to the oil return chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011537933.6A CN112576781B (en) | 2020-12-23 | 2020-12-23 | Proportional valve with decompression and reversing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011537933.6A CN112576781B (en) | 2020-12-23 | 2020-12-23 | Proportional valve with decompression and reversing functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112576781A CN112576781A (en) | 2021-03-30 |
| CN112576781B true CN112576781B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011537933.6A Active CN112576781B (en) | 2020-12-23 | 2020-12-23 | Proportional valve with decompression and reversing functions |
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| CN (1) | CN112576781B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446280B (en) * | 2021-06-30 | 2024-06-25 | 北京航空航天大学宁波创新研究院 | Bidirectional differential pressure controller and hydraulic equipment |
| CN113932040B (en) * | 2021-10-16 | 2024-04-12 | 涌镇液压机械（上海）有限公司 | Proportional valve for controlling opening and closing of injection molding machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1416247A (en) * | 1972-12-13 | 1975-12-03 | Daimler Benz Ag | Accumulator control valve assemblies |
| EP0987444A2 (en) * | 1998-09-18 | 2000-03-22 | HydraForce, Inc. | Proportional priority flow regulator with reverse flow control |
| CN202348809U (en) * | 2011-12-13 | 2012-07-25 | 常德中联重科液压有限公司 | Pressure reducing valve |
| CN202510814U (en) * | 2012-01-12 | 2012-10-31 | 上海昀锋液压有限公司 | Stacked proportional electromagnetic flow valve |
| DE102015215267A1 (en) * | 2014-08-12 | 2016-02-18 | Xuzhou Construction Machinery Group Co., Ltd. | Function connection valve body structure and proportional multiway valve |
| CN209638134U (en) * | 2019-03-08 | 2019-11-15 | 阿托斯(上海)液压有限公司 | A kind of pilot-operated type open loop two-stage proportional reversing valve |
| CN214171391U (en) * | 2020-12-23 | 2021-09-10 | 涌镇液压机械（上海）有限公司 | Proportional valve with pressure reducing and reversing functions |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10281934B2 (en) * | 2016-06-16 | 2019-05-07 | Parker-Hannifin Corporation | Hydraulic control valve with controlled flow and valve safety disable |
-
2020
- 2020-12-23 CN CN202011537933.6A patent/CN112576781B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1416247A (en) * | 1972-12-13 | 1975-12-03 | Daimler Benz Ag | Accumulator control valve assemblies |
| EP0987444A2 (en) * | 1998-09-18 | 2000-03-22 | HydraForce, Inc. | Proportional priority flow regulator with reverse flow control |
| CN202348809U (en) * | 2011-12-13 | 2012-07-25 | 常德中联重科液压有限公司 | Pressure reducing valve |
| CN202510814U (en) * | 2012-01-12 | 2012-10-31 | 上海昀锋液压有限公司 | Stacked proportional electromagnetic flow valve |
| DE102015215267A1 (en) * | 2014-08-12 | 2016-02-18 | Xuzhou Construction Machinery Group Co., Ltd. | Function connection valve body structure and proportional multiway valve |
| CN209638134U (en) * | 2019-03-08 | 2019-11-15 | 阿托斯(上海)液压有限公司 | A kind of pilot-operated type open loop two-stage proportional reversing valve |
| CN214171391U (en) * | 2020-12-23 | 2021-09-10 | 涌镇液压机械（上海）有限公司 | Proportional valve with pressure reducing and reversing functions |
Non-Patent Citations (1)
| Title |
|---|
| 一种转阀换向的液压双缸单作用往复泵设计;梁宁;;探矿工程(岩土钻掘工程);20110825(08);42-45 * |
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| CN112576781A (en) | 2021-03-30 |
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