CN112664689A - Cartridge valve with overflow and sequence control functions - Google Patents
Cartridge valve with overflow and sequence control functions Download PDFInfo
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- CN112664689A CN112664689A CN202011636750.XA CN202011636750A CN112664689A CN 112664689 A CN112664689 A CN 112664689A CN 202011636750 A CN202011636750 A CN 202011636750A CN 112664689 A CN112664689 A CN 112664689A
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- 238000007789 sealing Methods 0.000 claims description 26
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The invention provides a cartridge valve with overflow and sequence control functions, which comprises a valve body, a valve seat, a plug, a press plug, a piston, a valve core spring and a return spring, wherein the valve body is of a pipe-shaped structure, 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, the end part of the valve is provided with a throttling port b, a d port is arranged at the position of the valve seat close to the valve, the valve core is movably abutted with the d port in the valve seat, and the side part of the valve seat is provided with. 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
Overflow valves and sequence valves are used in modern engineering mechanical equipment; the overflow valve and the sequence valve are independent at present, products are not combined together, and under certain specific working conditions, when the overflow valve and the sequence valve are used simultaneously, pipelines and installation rooms need to be additionally arranged, so that the pipeline arrangement is complex, 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, and solves the technical problems of complex pipeline arrangement, high leakage risk and high cost in the prior art.
In order to achieve the purpose, the invention provides a cartridge valve with overflow and sequential control functions, which comprises a valve body, a valve seat, a plug, a press plug, a piston, a valve core spring and a return spring, wherein the valve body is of a pipe-shaped structure, the press plug, the piston, the valve core spring and the return spring are arranged in the valve seat in a sealing manner, one end of the plug is sleeved in one end of the valve seat in a sealing manner, the other end of the valve seat is sleeved in one end of the valve in a sealing manner, the valve is movably sleeved in the valve body in an opening-closing 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 body and the side part of the valve body, a throttling port b is arranged at the end part of the valve, a d port is arranged at the position of the valve seat close to the valve, the, one end of the valve element is arranged in the valve seat and is movably abutted with the opening d in an openable and closable manner, the other end of the valve element penetrates through the valve seat and the plug and is fixedly connected with the piston, the piston is arranged in one end, close to the valve seat, of the plug, the plug cover is arranged at the end part of the piston and is hermetically connected with the piston, one end, far away from the valve seat, of the plug is provided with a K opening, the K opening is communicated with the piston through a gap oil duct e between the plug and the plug, the valve element spring is sleeved on the outer wall of the valve element, one end of the valve element spring is connected with the plug, the other end of the valve element spring is connected with the end part, close to the valve body, of the valve element, a containing cavity c is formed between the valve and the valve seat, the reset spring is arranged, the other end of the reset spring is fixedly connected with the end part of the valve.
Preferably, 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.
Preferably, a first sealing ring and a retainer ring are arranged on the outer wall of the valve body close to the end part of the P port.
Preferably, a third sealing ring 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 V is arranged at the joint of the valve seat and the valve.
Preferably, a sixth sealing ring 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 press 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 preferred embodiment of a cartridge valve having overflow and sequence control features in accordance with the present invention;
FIG. 2 is an enlarged view of portion I of the cartridge valve of FIG. 1 with overflow and sequence control;
FIG. 3 is a schematic diagram of the cartridge valve of FIG. 1 with overflow and sequence control.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is 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 with a tubular structure, a valve 5, a valve seat 7, a plug 9, a press plug 10, a piston 16, a valve core 11, a valve core spring 12 and a return spring 14. The plug 9 is sleeved inside one end of the valve seat 7 in a sealing manner, the other end of the valve seat 7 is sleeved inside one end of the valve body 3 in a sealing manner, the valve 5 is sleeved inside one end of the valve 5 in a movable and openable manner, the valve 5 is sleeved inside the valve body 3 in a movable and openable manner, the end part of the valve body 3 is provided with a P port, a T port is arranged at the abutting part of the valve 5 and the side part of the valve body 3, the end part of the valve 5 is provided with a throttling port b, the valve seat 7 is provided with a d port at the position close to the valve 5, the valve core 11 is movably abutted against the d port in the valve seat 7, the side part of the valve seat 7 is provided with an f port which 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 5, the valve core is movably abutted with the port d in an openable and closable manner, 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, close to the valve seat 7, of the plug 9, the pressing plug 10 covers the end portion of the piston 16 and is connected with the piston 16 in a sealing manner, one end, far away from the valve seat 7, of the plug 9 is provided with a K port, the K port is communicated with the piston 16 through a gap oil duct e between the plug 9 and the pressing 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 portion, close to the valve body 3, of the valve core 11, a containing cavity c is formed between the valve 5 and the valve seat 7, the reset spring 14 is arranged in the, 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 of the valve core is fixedly connected with the piston 16 through a snap ring 17.
And a first sealing ring 1 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 third sealing ring 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 sealing ring five 13 is arranged at the joint of the valve seat 7 and the valve 5. And a sixth sealing ring 15 is arranged at the joint of the piston 16 and the plug 9. A seventh sealing ring 18 is arranged at the joint of the piston 16 and the press plug 10.
Taking oil as an example, the working principle of the invention is as follows:
firstly, overflow working principle: oil is fed from the port P, and flows into a closed cavity c formed by connecting the valve 5 and the valve seat 7 through the orifice b through the port P;
when the pressure of the port P is smaller than the preset pressure of the valve core spring 12, the valve core 11 does not act, and because the pressures of all the parts in the closed cavity c are equal, the stressed area of the valve 5 is larger than that of the valve body 3, the valve 5 is in a state of being tightly attached to the valve body 3;
if the pressure of the port P is greater than the preset pressure of the valve core spring 12, the valve core 11 moves upwards, and 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 oil passes through the T port, oil can be instantly generated to flow, pressure drop is generated when the oil passes through the throttling port b, the valve 5 can move upwards under the action of pressure of the P port, and therefore the P port pressure oil returns to the T port, and the overflow function is achieved.
Secondly, the working principle of sequential control: at the moment, if the pressure of the port P is smaller than the preset pressure of the valve core spring 12, the valve core 11 moves downwards, so that the cavity c becomes a closed cavity again;
the valve 5 will continue to return to the original position under the action of the return spring 14, and the connection between the port P and the port T is closed.
Oil enters from the port K, the oil flows into the plug 9 through the port K, pressure oil enters the piston 16 through the gap oil duct e between the plug 9 and the press plug 10, and due to the fact that the upper area and the lower area of the piston 16 are unequal, the piston 16 tends to move upwards under the effect of area difference;
when the pressure of the K port is greater than the preset pressure of the valve core spring 12, the valve core 11 can move upwards, and pressure oil of the P port enters the f port through the d port and flows into the T port along a gap between the valve 5 and the valve body 3, and meanwhile, because the oil return phase is communicated, oil liquid can be instantly generated to flow, so that pressure drop is generated when the oil liquid passes through the throttling port b, the valve 5 can move upwards under the pressure action of the P port, and the oil return of the P port to the T port is realized, and the function of sequential control is realized.
In summary, in combination with the schematic diagram shown in fig. 3, in the case of only the port P being filled with oil, the cartridge valve of the present invention selects whether to perform the overflow process according to the oil pressure of the port P. The valve of the K port pipeline is used for controlling the oil inlet of the P port to return oil to the T port.
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 embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A cartridge valve with overflow and sequence control functions is characterized by comprising a valve body, a valve seat, a plug, a pressing plug, a piston, a valve core spring and a return spring, wherein the valve body is of a pipe-shaped structure, one end of the plug is sleeved inside one end of the valve seat in a sealing mode, the other end of the valve seat is sleeved inside one end of the valve in a sealing mode, the valve is sleeved inside the valve body in a movable and openable mode, the end portion of the valve body is provided with a P port, a T port is formed in the position where the valve abuts against the side portion of the valve body, the end portion of the valve is provided with a throttling port b, a d port is formed in the position, close to the valve, of the valve seat, the valve core abuts against the d port in a movable mode, the side portion of the valve seat is provided with an f port, the f port is communicated with the inner, one end of the valve element is arranged in the valve seat and is movably abutted with the opening d in an openable and closable manner, the other end of the valve element penetrates through the valve seat and the plug and is fixedly connected with the piston, the piston is arranged in one end, close to the valve seat, of the plug, the plug cover is arranged at the end part of the piston and is hermetically connected with the piston, one end, far away from the valve seat, of the plug is provided with a K opening, the K opening is communicated with the piston through a gap oil duct e between the plug and the plug, the valve element spring is sleeved on the outer wall of the valve element, one end of the valve element spring is connected with the plug, the other end of the valve element spring is connected with the end part, close to the valve body, of the valve element, a containing cavity c is formed between the valve and the valve seat, the reset spring is arranged, the other end of the reset spring is fixedly connected with the end part of the valve.
2. The cartridge valve with overflow and sequence control functions of claim 1, wherein the valve core passes through the piston and the end part is fixedly connected with the piston through a snap ring.
3. The cartridge valve with overflow and sequence control functions as claimed in claim 1, wherein the outer wall of the valve body near the end of the P-port is provided with a first sealing ring and a retaining ring.
4. The cartridge valve with the functions of overflow and sequence control according to claim 1, wherein a third sealing ring is arranged at the joint of the valve body and the valve seat.
5. The cartridge valve with the functions of overflow and sequence control according to claim 1, wherein a fourth sealing ring is arranged at the joint of the valve seat and the plug.
6. The cartridge valve with the functions of overflow and sequence control according to claim 1, wherein a sealing ring five is arranged at the joint of the valve seat and the valve.
7. The cartridge valve with the functions of overflow and sequence control according to claim 1, wherein a sixth sealing ring is arranged at the joint of the piston and the plug.
8. The cartridge valve with the functions of overflow and sequence control according to claim 1, wherein a seventh sealing ring is arranged at the joint of the piston and the press 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 true CN112664689A (en) | 2021-04-16 |
| CN112664689B CN112664689B (en) | 2024-06-11 |
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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 |
|---|---|
| CN112664689B (en) | 2024-06-11 |
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