CN219911334U - Cartridge valve structure with oil way pressure relief function and hydraulic equipment - Google Patents
Cartridge valve structure with oil way pressure relief function and hydraulic equipment Download PDFInfo
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- CN219911334U CN219911334U CN202320078267.7U CN202320078267U CN219911334U CN 219911334 U CN219911334 U CN 219911334U CN 202320078267 U CN202320078267 U CN 202320078267U CN 219911334 U CN219911334 U CN 219911334U
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- cartridge valve
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- 230000000630 rising effect Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 3
- 239000003921 oil Substances 0.000 description 144
- 230000000694 effects Effects 0.000 description 16
- 238000007789 sealing Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Abstract
The embodiment of the utility model discloses a cartridge valve structure with an oil way pressure relief function, which comprises a pilot valve and an oil passing valve, wherein the pilot valve is sequentially provided with a P port, a B port, an A port and a T port from top to bottom, the P port is communicated with an oil supply channel, and the T port is communicated with an oil return channel; an adjusting cavity and a valve core are arranged in the cartridge valve, the bottom of the adjusting cavity is communicated with the oil supply channel, the top of the adjusting cavity is communicated with the port A, and the port A is communicated with the port T along with the electrifying of the pilot valve; one side of the adjusting cavity is communicated with the oil control channel, the other side of the adjusting cavity is communicated with the port B, and the port B is communicated with the port P along with the electrifying of the pilot valve. On the other hand, the utility model also provides hydraulic equipment, which comprises a cartridge valve structure with an oil way pressure relief function. The utility model has the advantages of reducing cost and simplifying control program.
Description
Technical Field
The utility model relates to the technical field of hydraulic systems, in particular to a cartridge valve structure with an oil way pressure relief function and hydraulic equipment.
Background
At present, a pilot valve and a cartridge valve are generally configured for accurately controlling the opening and closing of an oil circuit in a hydraulic system. Specifically, the cartridge valve is positioned between the oil supply channel and the oil control channel, and the oil is pushed to upwards open by the cartridge valve core through the power-on reversing of one pilot valve, so that the oil supply channel is communicated with the oil control channel; meanwhile, the other pilot valve is also electrically commutated, so that the oil in the oil supply channel can pass through the other pilot valve to the oil control channel, and the oil supply quantity and speed are ensured. When the oil way needs to be cut off for pressure relief, two pilot valves are required to be closed simultaneously, so that the cartridge valve core of the cartridge valve is closed downwards, the oil supply oil way and the control oil way are cut off to stop oil supply, the other pilot valve loses electricity, the oil pressure in the oil control channel is released, and misoperation of an executing mechanism caused by residual pressure oil in the system is avoided.
However, in this way, multiple pilot valves need to be used and controlled simultaneously, which not only increases the cost required for manufacturing the hydraulic system, but also causes complicated control procedures. And moreover, the staff also needs to maintain and replace a plurality of pilot valves, so that the working strength of the staff is increased.
Disclosure of Invention
The technical problem to be solved by the embodiment of the utility model is to provide a cartridge valve structure with an oil way pressure relief function and hydraulic equipment, so that the cost can be reduced, and the control program can be simplified.
In order to solve the technical problems, the embodiment of the utility model provides a cartridge valve structure with an oil way pressure relief function and hydraulic equipment, which comprises a pilot valve and an oil passing valve, wherein an oil supply channel, a cartridge valve, an oil control channel and an oil return channel are arranged in the oil passing valve;
an adjusting cavity and a valve core positioned in the adjusting cavity are arranged in the cartridge valve, the bottom of the adjusting cavity is communicated with the oil supply channel, the top of the adjusting cavity is communicated with the port A, and the port A is communicated with the port T along with the electrifying of the pilot valve, so that the oil in the oil supply channel can push the valve core to rise towards the top of the adjusting cavity;
one side of the adjusting cavity is communicated with the oil control channel, so that the oil supply channel is communicated with the oil control channel along with the rising of the valve core through the adjusting cavity, the other side of the adjusting cavity is communicated with the port B, and the port B is communicated with the port P along with the electrifying of the pilot valve, so that the oil control channel is communicated with the oil control channel sequentially through the port P, the port B and the adjusting cavity.
Preferably, a switching mechanism is arranged in the pilot valve, the port A is communicated with the port T along with the electrifying of the switching mechanism, and the port B is communicated with the port P along with the electrifying of the switching mechanism;
the port A is communicated with the port P along with the power failure of the switching mechanism, so that oil in the oil supply channel sequentially passes through the port P and the port A to the regulating cavity, and the port B is communicated with the port T along with the power failure of the switching mechanism.
Preferably, the pilot valve comprises a two-position four-way valve.
Preferably, the cartridge valve structure with the oil way pressure relief function further comprises a valve cover, wherein the valve cover covers the oil passing valve and is connected with the cartridge valve, and the valve cover is connected with the pilot valve.
Preferably, a first oil duct and a second oil duct positioned below the first oil duct are arranged in the valve cover, a first connecting channel and a second connecting channel are arranged in the oil passing valve, the P port is communicated with the oil supply channel through the first oil duct and the first connecting channel in sequence, and the B port is communicated with the other side of the adjusting cavity through the second oil duct and the second connecting channel in sequence. .
Preferably, a third oil duct located below the second oil duct and a fourth oil duct located below the third oil duct are further arranged in the valve cover, the opening a is communicated with the top of the adjusting cavity through the third oil duct, and the opening T is communicated with the oil return channel through the fourth oil duct.
Preferably, a containing groove is arranged between the oil supply channel and the oil control channel, the cartridge valve is positioned in the containing groove, and a buffer space is arranged between the side wall of the cartridge valve and the inner wall of the containing groove.
Preferably, the cartridge valve is provided with a protruding portion along the circumferential direction thereof, the protruding portion is located at the joint of the cartridge valve and the valve cover, and the protruding portion abuts against the inner wall of the accommodating groove.
Preferably, the oil supply channel is provided with a mounting end, the cartridge valve is clamped in the mounting end, the diameter of the mounting end is larger than or equal to that of the cartridge valve, and the diameter of the oil supply channel is smaller than that of the cartridge valve, so that the mounting end and the oil supply channel are combined to form a step structure.
On the other hand, the utility model provides hydraulic equipment, which comprises the cartridge valve structure with the oil way pressure relief function.
The embodiment of the utility model has the following beneficial effects:
in the embodiment of the utility model, the pilot valve is sequentially provided with the P port, the B port, the A port and the T port from top to bottom, the cartridge valve is internally provided with the adjusting cavity and the valve core positioned in the adjusting cavity, the bottom of the adjusting cavity is communicated with the oil supply channel, the top of the adjusting cavity is communicated with the A port, the A port is communicated with the T port along with the electrifying of the pilot valve, and the T port is communicated with the oil return channel, so that the oil in the oil supply channel can push the valve core to rise towards the top of the adjusting cavity by improving the oil pressure of the oil supply channel, and the oil positioned at the upper part of the valve core can sequentially flow into the oil return channel along with the rising of the valve core through the A port and the T port, thereby realizing the reflux and pressure relief effects and facilitating the rising of the valve core.
One side of the adjusting cavity is communicated with the oil control channel, so that the oil supply channel is communicated with the oil control channel along with the rising of the valve core through the adjusting cavity, and the oil passing effect is achieved.
And the other side of the adjusting cavity is communicated with the port B, the port B is communicated with the port P along with the electrifying of the pilot valve, and the port P is communicated with the oil supply channel, so that the oil control channel can be communicated with the oil control channel sequentially through the port P, the port B and the adjusting cavity, and the oil supply quantity and speed are ensured. The whole oil supply process can be completed by only using and controlling one pilot valve, so that the cost required by the production and manufacture of the hydraulic system is effectively reduced, and the control program is simplified.
Drawings
FIG. 1 is a block diagram of a cartridge valve structure with oil circuit pressure relief function according to an embodiment of the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a partial enlarged view at B shown in fig. 1.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present utility model, are used only with reference to the drawings of the present utility model, and are not meant to be limiting in any way.
Referring to fig. 1 to 3, the utility model provides a cartridge valve structure with an oil way pressure relief function, which comprises a pilot valve 1 and an oil passing valve 2, wherein an oil supply channel 21, a cartridge valve 22, an oil control channel 23 and an oil return channel 24 are arranged in the oil passing valve 2, and oil passes through the cartridge valve 22 from the oil supply channel 21 to the oil control channel 23;
in the embodiment of the utility model, the pilot valve 1 is sequentially provided with a P port 11, a B port 12, an a port 13 and a T port 14 from top to bottom, the cartridge valve 22 is internally provided with an adjusting cavity 221 and a valve core 222 positioned in the adjusting cavity 221, the bottom of the adjusting cavity 221 is communicated with the oil supply channel 21, the top of the adjusting cavity 221 is communicated with the a port 13, the a port 13 is communicated with the T port 14 along with the energizing of the pilot valve 1, and the T port 14 is communicated with the oil return channel 24, so that the oil in the oil supply channel 21 can push the valve core 222 to rise towards the top of the adjusting cavity 221 by increasing the oil pressure of the oil supply channel 21, and the oil positioned at the upper part of the valve core 222 can sequentially flow into the oil return channel 24 along with the rising of the valve core 222 through the a port 13 and the T port 14, thereby realizing backflow and pressure relief effects, so that the valve core 222 rises smoothly.
Wherein, one side of the adjusting cavity 221 is communicated with the oil control channel 23, so that the oil supply channel 21 is communicated with the oil control channel 23 along with the rising of the valve core 222 via the adjusting cavity 221, and the oil passing effect is realized.
And, the other side of the adjusting cavity 221 is communicated with the port B12, the port B12 is communicated with the port P11 along with the energizing of the pilot valve 1, and the port P11 is communicated with the oil supply channel 21, so that the oil supply channel 21 can be further communicated with the oil control channel 23 sequentially through the port P11 and the port B12, and the oil supply quantity and speed are ensured. The whole oil supply process can be completed by only using and controlling one pilot valve 1, so that the cost required by the production and manufacture of the hydraulic system is effectively reduced, and the control program is simplified.
Further, in order to realize the cut-off function, a switching mechanism is arranged in the pilot valve 1, the port a 13 is communicated with the port T14 along with the energizing of the switching mechanism, and the port B12 is communicated with the port P11 along with the energizing of the switching mechanism; and, the port a 13 is connected with the port P11 along with the power failure of the switching mechanism, so that the oil in the oil supply channel 21 sequentially passes through the port P11 and the port a 13 to the adjusting cavity 221, so that the oil can push the valve core 222 to be closed downwards, and the oil supply path and the control path are cut off to stop the oil supply.
The port B12 is connected with the port T14 along with the power failure of the switching mechanism, so that the oil in the oil control channel 23 can flow into the oil return channel 24 through the port B12 and the port T14 in sequence, and the pressure relief function of the oil control channel 23 is realized.
It should be noted that the product structure not only satisfies the oil supply function, but also can realize the cut-off pressure relief function. Under the condition of meeting the control function of the crude oil path, one pilot valve 1 is saved, so that the cost is reduced, and the control program is simplified.
Preferably, the pilot valve 1 comprises a two-position four-way valve, so as to realize a switching function.
On the other hand, in order to ensure the sealing effect, referring again to fig. 1 to 3, the cartridge valve structure with the oil circuit pressure relief function further comprises a valve cover 3, wherein the valve cover 3 covers the oil passing valve 2 and is connected with the cartridge valve 22, and the valve cover 3 is connected with the pilot valve 1, so that the sealing effect is achieved, and meanwhile, the communication effect is ensured.
Specifically, the valve cover 3 is internally provided with a first oil duct 31 and a second oil duct 32 located below the first oil duct 31, the oil passing valve 2 is internally provided with a first connecting channel 25 and a second connecting channel 26, the P port 11 is sequentially communicated with the oil supply channel 21 through the first oil duct 31 and the first connecting channel 25, so as to realize the communication effect of the P port 11 and the oil supply channel 21, and the B port 12 is sequentially communicated with the other side of the adjusting cavity 221 through the second oil duct 32 and the second connecting channel 26, so as to realize the communication effect of the B port 12 and the other side of the adjusting cavity 221, thereby facilitating the communication of the B port and the oil control channel 23.
Further, a third oil passage 33 located below the second oil passage 32 and a fourth oil passage 34 located below the third oil passage 33 are further disposed in the valve cover 3, the a port 13 is communicated with the top of the adjusting cavity 221 via the third oil passage 33, and the T port 14 is communicated with the oil return passage 24 via the fourth oil passage 34, so as to achieve a communication effect.
Preferably, a receiving groove 27 is provided between the oil supply channel 21 and the oil control channel 23, the cartridge valve 22 is located in the receiving groove 27, and a buffer space is provided between a side wall of the cartridge valve 22 and an inner wall of the receiving groove 27, so that oil can be temporarily stored in the buffer space to play a role in buffering, and avoid hydraulic impact.
More preferably, in order to ensure the sealing effect, the cartridge valve 22 is provided with a protrusion 223 along the circumferential direction thereof, the protrusion 223 is located at the joint of the cartridge valve 22 and the valve cover 3, so as to ensure the temporary storage oil amount of the oil liquid supplied to the buffer space, and the protrusion 223 abuts against the inner wall of the accommodating groove 27, so as to play a role in blocking, and prevent the oil flowing out from the second connecting channel 26 and/or the oil control channel 23 from flowing into the adjusting cavity 221 at the joint of the cartridge valve 22 and the valve cover 3, thereby ensuring the precise control of the pilot valve 1 on the cartridge valve 22.
More preferably, in order to further ensure the sealing effect, the oil supply channel 21 is provided with a mounting end 211, and the cartridge valve 22 is clamped in the mounting end 211; the diameter of the mounting end 211 is greater than or equal to the diameter of the cartridge valve 22, and the diameter of the oil supply channel 21 is smaller than the diameter of the cartridge valve 22, so that the mounting end 211 and the oil supply channel 21 are combined to form a step structure, thereby ensuring the sealing effect, positioning and supporting the cartridge valve 22, and ensuring the stability of the structure.
It should be noted that, the protrusion 223 may be provided with a sealing ring 4 facing the inner wall of the accommodating groove 27 to further perform a sealing function; likewise, another sealing ring 4 may be provided on one end of the cartridge valve 22 that is clamped in the mounting end 211, and the other sealing ring 4 faces the inner wall of the mounting end 211 to further perform a sealing function.
In addition, to assist the movement of the valve core 222, a spring member 5 is connected between the adjusting chamber 221 and the valve core 222, and when the valve core 222 is lifted, the spring member 5 compresses the stored force, so that when the valve core 222 is pushed down, the spring member 5 can perform a boosting function and a supporting function on the valve core 222. Because the hydraulic device of the embodiment of the disclosure includes the cartridge valve structure with the oil circuit pressure relief function according to any one of the embodiments, the hydraulic device of the embodiment of the disclosure has the technical effects brought by the cartridge valve structure with the oil circuit pressure relief function according to any one of the embodiments, so the specific technical effects of the hydraulic device of the embodiment of the disclosure can refer to the technical effects of the cartridge valve structure with the oil circuit pressure relief function according to any one of the embodiments, which are not repeated herein.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.
Claims (10)
1. The cartridge valve structure with the oil way pressure relief function comprises a pilot valve and an oil passing valve, wherein an oil supply channel, a cartridge valve, an oil control channel and an oil return channel are arranged in the oil passing valve;
an adjusting cavity and a valve core positioned in the adjusting cavity are arranged in the cartridge valve, the bottom of the adjusting cavity is communicated with the oil supply channel, the top of the adjusting cavity is communicated with the port A, and the port A is communicated with the port T along with the electrifying of the pilot valve, so that the oil in the oil supply channel can push the valve core to rise towards the top of the adjusting cavity;
one side of the adjusting cavity is communicated with the oil control channel, so that the oil supply channel is communicated with the oil control channel along with the rising of the valve core through the adjusting cavity, the other side of the adjusting cavity is communicated with the port B, and the port B is communicated with the port P along with the electrifying of the pilot valve, so that the oil control channel is communicated with the oil control channel sequentially through the port P, the port B and the adjusting cavity.
2. The cartridge valve structure with the oil way pressure relief function according to claim 1, wherein a conversion mechanism is arranged in the pilot valve, the port A is communicated with the port T along with the energization of the conversion mechanism, and the port B is communicated with the port P along with the energization of the conversion mechanism;
the port A is communicated with the port P along with the power failure of the switching mechanism, so that oil in the oil supply channel sequentially passes through the port P and the port A to the regulating cavity, and the port B is communicated with the port T along with the power failure of the switching mechanism.
3. The cartridge valve structure with oil circuit pressure relief function according to claim 2, wherein said pilot valve comprises a two-position four-way valve.
4. The cartridge valve structure with an oil circuit pressure relief function according to claim 1, further comprising a valve cover that covers the oil passing valve and is connected to the cartridge valve, and the valve cover is connected to the pilot valve.
5. The cartridge valve structure with the oil way pressure relief function according to claim 4, wherein a first oil way and a second oil way are arranged in the valve cover, a first connecting channel and a second connecting channel are arranged in the oil through valve, the P port is communicated with the oil supply channel sequentially through the first oil way and the first connecting channel, and the B port is communicated with the other side of the adjusting cavity sequentially through the second oil way and the second connecting channel.
6. The cartridge valve structure with an oil way pressure relief function according to claim 5, wherein a third oil way below the second oil way and a fourth oil way below the third oil way are further arranged in the valve cover, the port a is communicated with the top of the adjusting cavity through the third oil way, and the port T is communicated with the oil return passage through the fourth oil way.
7. The cartridge valve structure with the oil way pressure relief function according to claim 6, wherein a containing groove is arranged between the oil supply channel and the oil control channel, the cartridge valve is positioned in the containing groove, and a buffer space is arranged between the side wall of the cartridge valve and the inner wall of the containing groove.
8. The cartridge valve structure with the oil way pressure relief function according to claim 7, wherein the cartridge valve is provided with a protruding portion along the circumferential direction thereof, the protruding portion is located at a joint of the cartridge valve and the valve cover, and the protruding portion abuts against the inner wall of the accommodating groove.
9. The cartridge valve structure with the oil way pressure relief function according to claim 8, wherein a mounting end is arranged on the oil supply channel, the cartridge valve is clamped in the mounting end, the diameter of the mounting end is larger than or equal to that of the cartridge valve, and the diameter of the oil supply channel is smaller than that of the cartridge valve, so that the mounting end and the oil supply channel are combined to form a step structure.
10. A hydraulic apparatus comprising a cartridge valve structure with an oil passage pressure relief function according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320078267.7U CN219911334U (en) | 2023-01-09 | 2023-01-09 | Cartridge valve structure with oil way pressure relief function and hydraulic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320078267.7U CN219911334U (en) | 2023-01-09 | 2023-01-09 | Cartridge valve structure with oil way pressure relief function and hydraulic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219911334U true CN219911334U (en) | 2023-10-27 |
Family
ID=88421587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320078267.7U Active CN219911334U (en) | 2023-01-09 | 2023-01-09 | Cartridge valve structure with oil way pressure relief function and hydraulic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219911334U (en) |
-
2023
- 2023-01-09 CN CN202320078267.7U patent/CN219911334U/en active Active
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