CN210623243U - Multistage drive hydraulic valve control structure - Google Patents
Multistage drive hydraulic valve control structure Download PDFInfo
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- CN210623243U CN210623243U CN201921616192.3U CN201921616192U CN210623243U CN 210623243 U CN210623243 U CN 210623243U CN 201921616192 U CN201921616192 U CN 201921616192U CN 210623243 U CN210623243 U CN 210623243U
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Abstract
A multi-stage drive hydraulic valve control structure relates to the technical field of hydraulic valves and comprises a main valve sleeve, a main valve core, a main valve cover, a cover plate body, a control piston, a pilot valve, a spring and a threaded sleeve, wherein a preset number of main valve sleeve side oil holes communicated with a main valve sleeve central hole are formed in the side face of the main valve sleeve, a conical valve seat is arranged at the lower part of the main valve sleeve, the lower end of the main valve core and the conical valve seat of the main valve sleeve form a main valve opening, one end of the main valve core central hole is communicated with the main valve sleeve central hole, an oil way hole is further formed in the main valve core and communicated between a valve core control cavity and the main valve sleeve side oil holes, the cover plate body is provided with a cover plate body central hole penetrating through the cover plate body, one end of the cover plate body central hole is connected with the threaded sleeve, the other end of the cover plate body central hole is, The hydraulic control system can work reliably and can be widely used for adjusting and controlling an ultrahigh pressure hydraulic system.
Description
The technical field is as follows:
the utility model relates to a hydrovalve technical field especially relates to a multistage drive hydrovalve control structure.
Background art:
with the improvement of social production requirements and the development of equipment manufacturing industry, hydraulic transmission systems are increasingly developed towards the ultrahigh pressure driving and controlling direction, ultrahigh pressure directional valves and throttle valves are key elements of ultrahigh pressure hydraulic systems, and the traditional plug-in type directional valves and throttle valves are limited by working principles and mechanical structures at present and cannot be used for ultrahigh pressure hydraulic systems, so that the development and application of modern ultrahigh pressure hydraulic transmission control technologies are greatly limited.
The utility model has the following contents:
in order to solve the technical problem, the utility model provides a multistage drive hydrovalve control structure can be used for superhigh pressure hydraulic system's regulation and control.
The utility model discloses a realize through following technical scheme:
a multi-stage hydraulic valve control structure is characterized by comprising a main valve sleeve, a main valve core, a main valve cover, a cover plate body, a control piston, a pilot valve, a spring and a threaded sleeve, wherein the main valve sleeve is provided with a main valve sleeve center hole penetrating through the main valve sleeve, the side surface of the main valve sleeve is provided with a preset number of main valve sleeve side oil holes communicated with the main valve sleeve center hole, a main valve cover center hole penetrating through the main valve cover is formed in the main valve cover, one end of the main valve sleeve is fixed on the main valve cover, the main valve core is slidably arranged in the main valve sleeve center hole, a valve core control cavity is formed among the main valve sleeve, the main valve core and the main valve cover, a conical valve seat is arranged at the lower part of the main valve sleeve, the lower end of the main valve core and the conical valve seat of the main valve sleeve form a main valve opening, the main valve core, the main valve core is also provided with an oil circuit hole which is communicated between the valve core control cavity and the main valve sleeve side oil hole, the cover plate body is provided with a cover plate body center hole penetrating through the cover plate body, one end of the cover plate body center hole is connected with the screw sleeve, the other end of the cover plate body center hole is connected with the main valve cover, the control piston comprises an A section and a B section, the A section and the B section are respectively in clearance fit with the cover plate body center hole and the main valve cover center hole, the control piston is slidably arranged in the cover plate body center hole and the main valve cover center hole, the tail end of the B section of the control piston and the sealing inclined plane of the main valve core center hole form a control valve port, one end of the screw sleeve facing the control piston is provided with an inner hole, a spring is supported between the bottom end of the screw sleeve inner hole and the A section of the control piston, a sealing element is arranged on the matching surface of the, the pilot valve is installed on the cover plate body, an upper oil path and a lower oil path which are respectively communicated with the upper piston control cavity and the lower piston control cavity are formed in the cover plate body, and the upper oil path and the lower oil path are respectively communicated with two oil outlets of the pilot valve.
In another aspect of the present invention, the pilot valve is a two-position four-way reversing valve.
In another aspect of the invention, the seal is a greige ring.
In another aspect of the present invention, a positioning block platform is disposed on the main valve cover body, and the lower end surface of the cover plate body is supported on the positioning block platform of the main valve cover.
In another aspect of the present invention, the lower end of the main valve cover is provided with a main valve cover mounting hole, and the upper end of the main valve cover is inserted into the main valve cover mounting hole of the main valve cover.
The utility model has the advantages that:
the multi-stage driving hydraulic valve control structure can efficiently drive and control the hydraulic valve to stably and reliably work in a high-pressure and ultrahigh-pressure hydraulic environment, has the characteristics of high rated pressure of a main stage, large rated flow of the main stage, low pressure of a control stage, high response speed, stability, reliability in working and the like, and can be widely used for adjusting and controlling an ultrahigh-pressure hydraulic system.
Description of the drawings:
fig. 1 is a cross-sectional view of the overall structure of the embodiment of the present invention.
Fig. 2 is a cross-sectional view of the whole structure of the comparative example of the present invention.
In the drawings: 1. the main valve comprises a main valve sleeve, 2, a main valve core, 3, a main valve cover, 4, a cover plate body, 5, a control piston, 501, a section A, 502, a section B, 6, a pilot valve, 7, a spring, 8, a thread sleeve, 9, a valve core control cavity, 10, a main valve port, 11, a control valve port, 12, an upper piston control cavity, 13, a lower piston control cavity, 14, a pilot valve II, 15, a cover plate body II, 16, a main valve sleeve II, 17, a spring II, 18, a main valve core II, 19 and a valve core control cavity II.
The specific implementation mode is as follows:
the following describes the embodiments of the present invention with reference to the drawings and examples:
in the description of the present invention, it should be understood that the description indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
A multi-stage driving hydraulic valve control structure comprises a main valve sleeve 1, a main valve core 2, a main valve cover 3, a cover plate body 4, a control piston 5, a pilot valve 6, a spring 7 and a threaded sleeve 8, wherein the main valve sleeve 1 is provided with a main valve sleeve central hole penetrating through the main valve sleeve, the side surface of the main valve sleeve 1 is provided with a preset number of main valve sleeve side oil holes communicated with the main valve sleeve central hole, the main valve cover 3 is provided with a main valve cover central hole penetrating through the main valve cover 3, one end of the main valve sleeve 1 is fixed on the main valve cover 3, the main valve core 2 is slidably arranged in the main valve sleeve central hole, a valve core control cavity 9 is formed among the main valve sleeve 1, the main valve core 2 and the main valve cover 3, the lower part of the main valve sleeve 1 is provided with a conical valve seat, the lower end of the main valve core 2 and the conical valve seat of the main valve sleeve form a main, the other end of the main valve core center hole is provided with a sealing inclined plane, the main valve core 2 is also provided with an oil path hole, the oil path hole is communicated between the valve core control cavity 9 and the main valve sleeve side oil hole, the cover plate body 4 is provided with a cover plate body center hole penetrating through the cover plate body 4, one end of the cover plate body center hole is connected with a screw sleeve 8, the other end of the cover plate body center hole is connected with the main valve cover 3, the control piston 5 comprises an A section 501 and a B section 502, the A section 501 and the B section 502 are of an integral structure, the A section 501 and the B section 502 are respectively in clearance fit with the cover plate body center hole and the main valve cover center hole, the control piston 5 is slidably arranged in the cover plate body center hole and the main valve cover center hole, the end of the B section 502 of the control piston 5 and the sealing inclined plane of the main valve core center hole form a control valve port 11, one end of the screw sleeve 8, the section A of the control piston 5 and the matching surface of the cover plate body center hole are provided with sealing elements, the sealing elements divide the cover plate body center hole into an upper piston control cavity 12 and a lower piston control cavity 13, the pilot valve 6 is installed on the cover plate body 4, the cover plate body 4 is provided with a pilot valve installation surface, the pilot valve 6 is fixed on the pilot valve installation surface through bolts or welding, the cover plate body 4 is provided with an upper oil way and a lower oil way which are respectively communicated with the upper piston control cavity 12 and the lower piston control cavity 13, and the upper oil way and the lower oil way are respectively communicated with two oil outlets of the pilot valve 6. The pilot valve 6 is a two-position four-way reversing valve, and in the embodiment, the pilot valve 6 is a 4we6 type electromagnetic directional valve produced by Shandong Taifeng hydraulic pressure corporation. The sealing element is a Gray ring. The main valve cover 3 is provided with a positioning clamping table on the body, and the lower end face of the cover plate body 4 is pressed against the positioning clamping table of the main valve cover 3. The lower end of the main valve cover 3 is provided with a main valve sleeve mounting hole, and the upper end of the main valve sleeve 1 is inserted into the main valve sleeve mounting hole of the main valve cover 3.
The working process of the multi-stage driving hydraulic valve control structure is as follows: when no control oil enters an upper piston control cavity 12 and a lower piston control cavity 13 through a pilot valve 6, a spring 7 drives a control piston 5 to be seated on a main valve core 2, a control valve port 11 is at a closed position, oil from an oil hole on the side of a main valve sleeve enters a valve core control cavity 9 through an oil circuit inside the main valve core 2, and the main valve core 2 moves downwards until the main valve port 10 is closed; when control oil enters a lower piston control cavity 13 through a pilot valve 6, a control piston 5 is lifted, the control piston 5 leaves a main valve core 2, a control valve port 11 is opened, oil from an oil hole on the side of a main valve sleeve enters an outlet of the main valve core 2 through an oil circuit inside the main valve core 2 and the control valve port 11, pressure difference is formed at two ends of the main valve core 2, the main valve core 2 moves upwards along with the control piston 5, a main valve port 10 is opened, when the control piston 5 moves to a terminal point, the main valve core 2 also continues to move along with the control piston to the stroke terminal point, the main valve core 2 is opened at the maximum position, and at the moment, the control valve port 11 also has; when control oil enters the upper piston control cavity 12 through the pilot valve 6 or no control oil exists, the control piston 5 moves downwards until the control valve port 11 is closed, and oil coming from the oil hole on the side surface of the main valve sleeve also pushes the main valve element 2 to move downwards until the main valve port 10 is closed.
The multi-stage driving hydraulic valve control structure realizes a novel multi-stage driving hydraulic valve control technology, finds a method for efficiently driving and controlling a hydraulic valve to stably and reliably work in a high-pressure and ultrahigh-pressure hydraulic environment by using a low-pressure hydraulic medium through innovative principle design and structural design, has the characteristics of high main-stage rated pressure, large main-stage rated flow, low control-stage pressure, high and stable response speed, stable and reliable work and the like, can be widely used for adjusting and controlling an ultrahigh-pressure hydraulic system, and is particularly suitable for driving and controlling ultrahigh-pressure and large-flow plug-in directional valves and throttle valves.
Comparative example 1
The comparative example 1 is a common two-stage control plug-in type directional valve, a main valve element II 18 is arranged in a central hole of a main valve sleeve II 16, the main valve element II 18 can slide up and down, one end of a cover plate body II 15 is connected with a pilot valve II 14, the other end of the cover plate body II 15 is connected with the main valve sleeve II 16, the cover plate body II 15, the main valve sleeve II 16 and the main valve element II 18 form a valve element control cavity II 19, the cover plate body II 15 is provided with an oil way to communicate the pilot valve II 14 with the valve element control cavity II 19, and a spring II 17 is arranged in an inner hole of the main valve. The plug-in directional valve with the structure controls the motion state of the main valve element II by the control oil pressure, the spring force, the main valve port pressure and the like, and the valve with the structure cannot be used in an ultrahigh pressure working environment because the upper and lower effective area difference of the main valve element II 18 in the structure is limited and the rated working pressure of the pilot valve II 14 is lower.
In short, the above-mentioned embodiments are only preferred embodiments of the present invention, and all the equivalent changes and modifications made in the claims of the present invention should be covered by the scope of the present invention.
Claims (5)
1. A multi-stage driving hydraulic valve control structure is characterized by comprising a main valve sleeve (1), a main valve core (2), a main valve cover (3), a cover plate body (4), a control piston (5), a pilot valve (6), a spring (7) and a threaded sleeve (8), wherein a main valve sleeve central hole penetrating through the main valve sleeve is formed in the main valve sleeve (1), a preset number of main valve sleeve side oil holes communicated with the main valve sleeve central hole are formed in the side face of the main valve sleeve (1), a main valve cover central hole penetrating through the main valve cover (3) is formed in the main valve cover (3), one end of the main valve sleeve (1) is fixed on the main valve cover (3), the main valve core (2) is slidably installed in the main valve sleeve central hole, a valve core control cavity (9) is formed among the main valve sleeve (1), the main valve core (2) and the main valve cover (3), a conical valve seat is arranged at the lower portion of the main valve sleeve (1), and the lower, the main valve core (2) is provided with a main valve core central hole which penetrates through the main valve core (2), one end of the main valve core central hole is communicated with the main valve sleeve central hole, the other end of the main valve core central hole is provided with a sealing inclined plane, the main valve core (2) is also provided with an oil way hole, the oil way hole is communicated between a valve core control cavity (9) and a main valve sleeve side oil hole, the cover plate body (4) is provided with a cover plate body central hole which penetrates through the cover plate body (4), one end of the cover plate body central hole is connected with a screw sleeve (8), the other end of the cover plate body central hole is connected with the main valve cover (3), the control piston (5) comprises an A section (501) and a B section (502), the A section (501) and the B section (502) are respectively in clearance fit with the cover plate body central hole and the main valve cover central hole, the control piston (5) is slidably arranged in the cover plate body central hole and the main valve cover central hole, the one end of swivel nut (8) towards control piston (5) is opened there is the hole, supports between the A section of swivel nut (8) hole bottom and control piston (5) spring (7), and the A section of control piston (5) is provided with the sealing member with the fitting surface of apron body centre bore, the sealing member separates apron body centre bore into piston control chamber (12) and lower piston control chamber (13) down, and pilot valve (6) are installed on apron body (4), and it has last oil circuit and lower oil circuit with last piston control chamber (12) and lower piston control chamber (13) intercommunication respectively to open on apron body (4), go up the oil circuit and lower oil circuit and communicate with two oil-outs of pilot valve (6) respectively.
2. The control structure of the multi-stage driving hydraulic valve according to claim 1, wherein the pilot valve (6) is a two-position four-way reversing valve.
3. A control structure of a multi-stage driving hydraulic valve according to claim 1, wherein the sealing member is a gray ring.
4. The multi-stage driving hydraulic valve control structure according to claim 1, wherein a positioning clamping table is arranged on the body of the main valve cover (3), and the lower end surface of the cover plate body (4) is abutted against the positioning clamping table of the main valve cover (3).
5. A multi-stage driving hydraulic valve control structure according to claim 1, wherein the lower end of the main valve cover (3) is provided with a main valve housing mounting hole, and the upper end of the main valve housing (1) is inserted into the main valve housing mounting hole of the main valve cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921616192.3U CN210623243U (en) | 2019-09-26 | 2019-09-26 | Multistage drive hydraulic valve control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921616192.3U CN210623243U (en) | 2019-09-26 | 2019-09-26 | Multistage drive hydraulic valve control structure |
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| CN210623243U true CN210623243U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921616192.3U Active CN210623243U (en) | 2019-09-26 | 2019-09-26 | Multistage drive hydraulic valve control structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594225A (en) * | 2019-09-26 | 2019-12-20 | 山东泰丰智能控制股份有限公司 | Multistage drive hydraulic valve control structure |
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- 2019-09-26 CN CN201921616192.3U patent/CN210623243U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594225A (en) * | 2019-09-26 | 2019-12-20 | 山东泰丰智能控制股份有限公司 | Multistage drive hydraulic valve control structure |
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