CN112664689B - Cartridge valve with overflow and sequence control functions - Google Patents
Cartridge valve with overflow and sequence control functions Download PDFInfo
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- CN112664689B CN112664689B CN202011636750.XA CN202011636750A CN112664689B CN 112664689 B CN112664689 B CN 112664689B CN 202011636750 A CN202011636750 A CN 202011636750A CN 112664689 B CN112664689 B CN 112664689B
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- 238000007789 sealing Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
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Abstract
The invention provides a cartridge valve with overflow and sequence control functions, which comprises a valve body with a pipe-shaped structure, a valve seat, a plug, a pressing plug, a piston, a valve core spring and a return spring, wherein a P port is arranged at the end part of the valve body, a T port is arranged at the joint of the valve and the side part of the valve body, a throttle port b is arranged at the end part of the valve, a d port is arranged at the position, close to the valve, of the valve seat, the valve core is movably abutted with the d port in the valve seat, and an f port is arranged at the side part of the valve seat. The invention has compact structure, saves installation space, saves cost and reduces the risk of liquid leakage.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a cartridge valve with overflow and sequence control functions.
Background
In modern engineering machinery equipment, overflow valves and sequence valves are used; at present, the overflow valve and the sequence valve are independent and are not combined together, and when the overflow valve and the sequence valve are required to be used simultaneously under certain specific working conditions, pipelines and installation rooms are additionally arranged, so that the pipeline arrangement is complicated, the risk of oil leakage is increased, and the cost is increased.
Disclosure of Invention
The invention provides a cartridge valve with overflow and sequence control functions, which solves the technical problems of complex pipeline arrangement, high leakage risk and high cost in the prior art.
In order to achieve the above purpose, the cartridge valve with overflow and sequence control functions provided by the invention comprises a valve body with a tubular structure, a valve seat, a plug, a pressing plug, a piston, a valve core spring and a return spring, wherein one end of the plug is hermetically sleeved and embedded in one end of the valve seat, the other end of the valve seat is hermetically sleeved and embedded in one end of the valve, the valve is movably sleeved and embedded in the valve body, the end part of the valve body is provided with a P port, a T port is arranged at the abutting part of the valve and the side part of the valve body, a throttle port b is arranged at the end part of the valve, a d port is arranged at the position, close to the valve, of the valve seat, the valve core is movably abutted with the d port in the valve seat, an f port is arranged at the side part of the valve seat, the f port is communicated with the inner wall of the valve body, and can be communicated with the T port through a gap between the valve body and the valve, one end of the valve core is arranged in the valve seat and is in movable and openable abutting joint with the d port, the other end of the valve core passes through the valve seat and the plug and is fixedly connected with the piston, the piston is arranged in one end of the plug, which is close to the valve seat, the plug pressing cover is arranged at the end of the piston and is in closed connection with the piston, one end of the plug, which is far away from the valve seat, is provided with a K port, the K port is communicated with the piston through a gap oil duct e between the plug and the plug pressing cover, one end of the valve core spring is sleeved on the outer wall of the valve core and is connected with the plug, the other end of the valve core spring is connected with the end of the valve core, which is close to the valve body, a cavity c is formed between the valve core and the valve seat, the reset spring is arranged in the cavity c, one end of the return spring is fixedly connected with the valve seat, and the other end of the return spring is fixedly connected with the end part of the valve.
Preferably, the valve core passes through the piston, and the end part is fixedly connected with the piston through a clamping ring.
Preferably, a first sealing ring and a check ring are arranged on the outer wall of the end part of the valve body near the P port.
Preferably, a sealing ring III is arranged at the joint of the valve body and the valve seat.
Preferably, a sealing ring IV is arranged at the joint of the valve seat and the plug.
Preferably, a sealing ring five is arranged at the joint of the valve seat and the valve.
Preferably, a sealing ring six is arranged at the joint of the piston and the plug.
Preferably, a sealing ring seven is arranged at the joint of the piston and the pressure plug.
The cartridge valve with the overflow and sequence control functions has the advantages of compact structure, installation space saving, cost saving and liquid leakage risk reduction.
Drawings
FIG. 1 is a schematic diagram of a cartridge valve with overflow and sequence control according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged view of the portion I of the cartridge valve of FIG. 1 with overflow and sequence control functions;
FIG. 3 is a schematic diagram of a cartridge valve with overflow and sequence control as shown in FIG. 1.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The invention provides a cartridge valve with overflow and sequence control functions, which is shown in fig. 1 and 2 and comprises a valve body 3, a valve 5, a valve seat 7, a plug 9, a pressure plug 10, a piston 16, a valve core 11, a valve core spring 12 and a return spring 14. The plug 9 is inserted in one end of the valve seat 7, the other end of the valve seat 7 is inserted in one end of the valve body 3, the valve 5 is inserted in one end of the valve body 5, the valve body 5 is inserted in the valve body 3 in a movable and openable manner, the end of the valve body 3 is provided with a P port, a T port is arranged at the abutting part of the valve body 5 and the side part of the valve body 3, a throttle port b is arranged at the end of the valve body 5, a d port is arranged at the position of the valve seat 7 close to the valve body 5, the valve core 11 is movably abutted to the d port in the valve seat 7, an f port is arranged at the side part of the valve seat 7, the f port is communicated with the inner wall of the valve body 3 and can be communicated with the T port through a gap between the valve body 3 and the valve body 5, one end of the valve core 11 is arranged in the valve seat 7, the valve core 11 is movably and in open-close type abutting joint with the port d, the other end of the valve core 11 penetrates through the valve seat 7 and the plug 9 and is fixedly connected with the piston 16, the piston 16 is arranged in one end of the plug 9 close to the valve seat 7, the pressure plug 10 is covered at the end part of the piston 16 and is in closed type connection with the piston 16, one end of the plug 9 far away from the valve seat 7 is provided with a port K, the port K is communicated with the piston 16 through a clearance oil duct e between the plug 9 and the pressure plug 10, the valve core spring 12 is sleeved on the outer wall of the valve core 11, one end of the valve core spring 12 is connected with the plug 9, the other end of the valve core spring 12 is connected with the end part of the valve core 11 close to the valve body 3, a cavity c is formed between the valve 5 and the valve seat 7, the return spring 14 is arranged in the cavity c, one end of the return spring 14 is fixedly connected with the valve seat 7, and the other end of the return spring 14 is fixedly connected with the end part of the valve 5.
The valve core 11 passes through the piston 16, and the end part is fixedly connected with the piston 16 through a clamping ring 17.
And a sealing ring I1 and a retainer ring 2 are arranged on the outer wall of the end part of the valve body 3 close to the P port.
And a sealing ring III 6 is arranged at the joint of the valve body 3 and the valve seat 7. And a sealing ring IV 8 is arranged at the joint of the valve seat 7 and the plug 9. And a fifth sealing ring 13 is arranged at the joint of the valve seat 7 and the valve 5. A seal ring six 15 is arranged at the joint of the piston 16 and the plug 9. A sealing ring seven 18 is arranged at the joint of the piston 16 and the pressure plug 10.
Taking oil as an example, the working principle of the invention is as follows:
1. the working principle of overflow: the P port is used for oil feeding, and oil flows into a closed containing cavity c formed by connecting the valve 5 and the valve seat 7 through the orifice b;
When the pressure of the P port is smaller than the preset pressure of the valve core spring 12, the valve core 11 does not act, and the valve 5 is in a state of being tightly attached to the valve body 3 because the pressure of each part in the closed cavity c is equal and the stress area of the valve 5 is larger than that of the valve body 3;
if the pressure of the port P is larger than the preset pressure of the valve core spring 12, the valve core 11 moves upwards, and the pressure oil of the port P enters the port f through the port d and flows into the port T along the gap between the valve 5 and the valve body 3;
meanwhile, when the oil passes through the T port, the oil can flow instantly, so that pressure drop is generated when the oil passes through the throttle port b, and the valve 5 can act upwards under the action of P port pressure, so that the P port pressure oil returns to the T port, and the overflow function is realized.
2. Working principle of sequential control: at this time, if the pressure of the port P is smaller than the preset pressure of the valve core spring 12, the valve core 11 will move downward, so that the cavity c becomes a closed cavity again;
The valve 5 will continue to return to its original position under the action of the return spring 14, and the connection between the port P and the port T is closed.
The oil flows into the plug 9 through the oil port K, and pressure oil can enter the piston 16 through a gap oil duct e between the plug 9 and the pressure plug 10, and the piston 16 has a trend of upward movement under the action of area difference due to unequal upper and lower areas of the piston 16;
When the pressure of the K port is larger than the preset pressure of the valve core spring 12, the valve core 11 moves upwards, P port pressure oil enters the f port through the d port and flows into the T port along the gap between the valve 5 and the valve body 3, meanwhile, oil flow can be generated instantaneously because of the connection of the return oil phase, pressure drop is generated when the oil passes through the throttle port b, the valve 5 can move upwards under the action of the P port pressure, and therefore the return of the P port pressure oil to the T port is realized, and the function of sequential control is realized.
In summary, with reference to the schematic diagram shown in fig. 3, in the case of only the oil inlet of the P port, the cartridge valve of the present invention selects whether to perform the overflow treatment according to the oil pressure of the P port. The cartridge valve can realize the function of controlling the oil inlet of the P port through the K port pipeline and returning oil to the T port through the working principle by means of the valve of the K port pipeline.
The cartridge valve with the overflow and sequence control functions has the advantages of compact structure, installation space saving, cost saving and liquid leakage risk reduction.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (6)
1. The cartridge valve with overflow and sequence control functions is characterized by comprising a valve body with a tubular structure, a valve seat, a plug, a pressing plug, a piston, a valve core spring and a reset spring, wherein one end of the plug is hermetically sleeved inside one end of the valve seat, the other end of the valve seat is hermetically sleeved inside one end of the valve, the valve is movably sleeved inside the valve body in an openable and closable manner, a P port is arranged at the end part of the valve body, a T port is arranged at the abutting part of the valve and the side part of the valve body, a throttle port b is arranged at the end part of the valve seat, a d port is arranged at the position, close to the valve, of the valve core in the valve seat, the d port is movably abutted with the valve core, an f port is arranged at the side part of the valve seat, the f port is communicated with the inner wall of the valve body, and can be communicated with the T port through a gap between the valve body and the valve, one end of the valve core is arranged in the valve seat and is in movable and openable abutting joint with the d port, the other end of the valve core passes through the valve seat and the plug and is fixedly connected with the piston, the piston is arranged in one end of the plug, which is close to the valve seat, the plug pressing cover is arranged at the end of the piston and is in closed connection with the piston, one end of the plug, which is far away from the valve seat, is provided with a K port, the K port is communicated with the piston through a gap oil duct e between the plug and the plug pressing cover, one end of the valve core spring is sleeved on the outer wall of the valve core and is connected with the plug, the other end of the valve core spring is connected with the end of the valve core, which is close to the valve body, a cavity c is formed between the valve core and the valve seat, the reset spring is arranged in the cavity c, one end of the return spring is fixedly connected with the valve seat, and the other end of the return spring is fixedly connected with the end part of the valve;
the valve core penetrates through the piston, and the end part of the valve core is fixedly connected with the piston through a clamping ring;
And a first sealing ring and a check ring are arranged on the outer wall of the end part of the valve body close to the P port.
2. The cartridge valve with overflow and sequence control function according to claim 1, wherein a sealing ring III is arranged at the joint of the valve body and the valve seat.
3. The cartridge valve with overflow and sequence control function according to claim 1, wherein a sealing ring IV is arranged at the joint of the valve seat and the plug.
4. The cartridge valve with overflow and sequence control function according to claim 1, wherein a seal ring five is arranged at the joint of the valve seat and the valve.
5. The cartridge valve with overflow and sequence control function according to claim 1, wherein a sealing ring six is arranged at the joint of the piston and the plug.
6. The cartridge valve with overflow and sequence control functions according to claim 1, wherein a sealing ring seven is arranged at the joint of the piston and the pressure plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011636750.XA CN112664689B (en) | 2020-12-31 | 2020-12-31 | Cartridge valve with overflow and sequence control functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011636750.XA CN112664689B (en) | 2020-12-31 | 2020-12-31 | Cartridge valve with overflow and sequence control functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112664689A CN112664689A (en) | 2021-04-16 |
| CN112664689B true CN112664689B (en) | 2024-06-11 |
Family
ID=75413632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011636750.XA Active CN112664689B (en) | 2020-12-31 | 2020-12-31 | Cartridge valve with overflow and sequence control functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112664689B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU386971A1 (en) * | 1971-11-10 | 1973-06-21 | Конструкторское бюро коксохимического машиностроени Всесоюзного государственного института проектированию предпри тий коксохимической промышленности | |
| CN204805220U (en) * | 2015-05-27 | 2015-11-25 | 上海朝田实业有限公司 | Piston ultralow pressure overflow valve |
| CN205371160U (en) * | 2015-12-28 | 2016-07-06 | 赛克思液压科技股份有限公司 | Pressure boost overflow valve |
| CN105909584A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve |
| RU2629343C1 (en) * | 2016-05-26 | 2017-08-28 | Сергей Валерьевич Николаенко | Gas distribution mechanism and inlet valve of piston drive |
| CN207569315U (en) * | 2017-10-31 | 2018-07-03 | 浙江华益精密机械股份有限公司 | Overflow valve |
| CN109268339A (en) * | 2018-11-26 | 2019-01-25 | 李军 | A kind of switching valve for small hydraulic machine |
| CN214093188U (en) * | 2020-12-31 | 2021-08-31 | 湖南鸿辉科技有限公司 | Cartridge valve with overflow and sequence control functions |
-
2020
- 2020-12-31 CN CN202011636750.XA patent/CN112664689B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU386971A1 (en) * | 1971-11-10 | 1973-06-21 | Конструкторское бюро коксохимического машиностроени Всесоюзного государственного института проектированию предпри тий коксохимической промышленности | |
| CN204805220U (en) * | 2015-05-27 | 2015-11-25 | 上海朝田实业有限公司 | Piston ultralow pressure overflow valve |
| CN205371160U (en) * | 2015-12-28 | 2016-07-06 | 赛克思液压科技股份有限公司 | Pressure boost overflow valve |
| CN105909584A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve |
| RU2629343C1 (en) * | 2016-05-26 | 2017-08-28 | Сергей Валерьевич Николаенко | Gas distribution mechanism and inlet valve of piston drive |
| CN207569315U (en) * | 2017-10-31 | 2018-07-03 | 浙江华益精密机械股份有限公司 | Overflow valve |
| CN109268339A (en) * | 2018-11-26 | 2019-01-25 | 李军 | A kind of switching valve for small hydraulic machine |
| CN214093188U (en) * | 2020-12-31 | 2021-08-31 | 湖南鸿辉科技有限公司 | Cartridge valve with overflow and sequence control functions |
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| Publication number | Publication date |
|---|---|
| CN112664689A (en) | 2021-04-16 |
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