CN215980998U - Pilot-operated type hydraulic control one-way valve - Google Patents
Pilot-operated type hydraulic control one-way valve Download PDFInfo
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- CN215980998U CN215980998U CN202122045856.9U CN202122045856U CN215980998U CN 215980998 U CN215980998 U CN 215980998U CN 202122045856 U CN202122045856 U CN 202122045856U CN 215980998 U CN215980998 U CN 215980998U
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- 238000007789 sealing Methods 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 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
- 239000002994 raw material Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a pilot-operated hydraulic control one-way valve which comprises a valve body, wherein a first oil duct and a second oil duct are arranged on one side surface of the valve body, a switch valve hole which is perpendicular to and communicated with the second oil duct is arranged on the left side of the second oil duct, a switch valve is connected to the inside of the switch valve hole in a threaded manner, a one-way valve component hole which is perpendicular to and communicated with the first oil duct is arranged on the left side of the first oil duct, a one-way valve component is installed on the inside of the one-way valve component hole in a threaded manner, and an oil return opening is formed in the lower end of the one-way valve component hole; the check valve assembly comprises a valve seat, an outer valve core and an inner valve core, the inner valve core is connected inside the outer valve core in a sliding mode, and the valve seat is connected inside the check valve assembly hole in a threaded mode to fix the outer valve core. When the check valve is used, the opening size of the pilot oil way can be controlled by rotating the hand wheel, and the adjustment of the pilot oil way of the check valve is realized. The one-way valve in the structure has the advantages of simple oil circuit arrangement, stable motion of the one-way valve and stable opening and closing speed.
Description
Technical Field
The utility model relates to the technical field of hydraulic valves, in particular to a pilot-operated type hydraulic control one-way valve.
Background
The hydraulic valve is an automatic element operated by pressure oil, is controlled by the pressure oil of a distribution valve, is usually combined with an electromagnetic distribution valve for use, and can be used for remotely controlling the connection and disconnection of oil, gas and water pipeline systems of hydropower stations.
The pilot operated check valve is a pilot operated check valve, which is composed of a pilot valve and a pilot operated check valve which are detachably connected and combined into a whole or integrated on a valve body.
The pilot structure of the prior pilot-operated hydraulic control one-way valve is a fixed structure, can not be adjusted and closed, and can be used on some hydraulic valve products needing to adjust a pilot oil way.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems that the pilot structures of the existing pilot type hydraulic control one-way valves are fixed structures, cannot be adjusted and closed, and can be used on some hydraulic valve products needing to adjust pilot oil paths, the utility model provides the following technical scheme:
the utility model discloses a pilot-operated hydraulic control one-way valve which comprises a valve body, wherein a first oil duct and a second oil duct are arranged on one side surface of the valve body, a switch valve hole which is perpendicular to and communicated with the second oil duct is arranged on the left side of the second oil duct, a switch valve is connected to the inside of the switch valve hole in a threaded manner, a one-way valve component hole which is perpendicular to and communicated with the first oil duct is arranged on the left side of the first oil duct, a one-way valve component is installed on the inside of the one-way valve component hole in a threaded manner, and an oil return port is formed in the lower end of the one-way valve component hole; the check valve assembly comprises a valve seat, an outer valve core and an inner valve core, the inner valve core is connected to the inner part of the outer valve core in a sliding manner, and the valve seat is connected to the inner part of the check valve assembly hole in a threaded manner to fix the outer valve core; the outer valve core is provided with a through hole which is communicated with a second pressure cavity of the valve body, and the second oil duct is communicated with a cavity where the end face of the inner valve core is located.
Preferably, the first oil channel and the second oil channel are arranged in parallel and are formed by drilling holes by a drill bit, and the heads of the first oil channel and the second oil channel are blocked by a ZG/plug for sealing.
Preferably, the switch valve includes that threaded connection installs the switch disk seat at the valve body, the inside threaded connection of switch disk seat has lock nut, lock nut upper end fixedly connected with hand wheel, lock nut lower extreme fixedly connected with seal ring, seal ring are in the lower extreme and close the circulation of second oil duct to the check valve subassembly hole.
Preferably, the other end of the check valve assembly hole, which is far away from the oil return port, is in threaded connection with a plug with a sealing ring.
Preferably, the middle of the inner valve core is provided with a blind hole communicated with the oil return port, and the inner valve core is also provided with a valve hole connected with the blind hole.
Preferably, a spring is sleeved outside the inner valve core, one end of the spring abuts against a step surface fixedly arranged outside the inner valve core, and the other end of the spring abuts against a step surface inside the outer valve core.
The utility model has the beneficial effects that: the valve body of the structure integrates the one-way valve and the pilot oil way, the opening size of the pilot oil way can be controlled by rotating the hand wheel when the valve is switched on and off on the pilot oil way, or the pilot oil way is closed, so that the adjustment of the pilot oil way of the one-way valve is realized. The check valve in the structure has simple oil circuit arrangement, the complexity of parts of the check valve is integrally reduced, the check valve moves stably, and the opening and closing speed is stable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic view of the overall structure of a pilot operated check valve according to the present invention;
FIG. 2 is a schematic view of a mounting portion of a check valve assembly of a pilot operated check valve according to the present invention;
fig. 3 is a schematic structural diagram of a switching valve installation part of a pilot-operated pilot-controlled check valve according to the present invention.
In the figure: the valve comprises a valve body 1, an oil return port 101, a second pressure chamber 102, a first oil channel 2, a second oil channel 3, a check valve assembly hole 4, a check valve assembly 5, a valve seat 501, an outer valve core 502, an inner valve core 503, a through hole 504, a blind hole 505, a valve hole 506, a spring 507, an on-off valve 6, an on-off valve seat 601, a locking nut 602, a sealing washer 603, a hand wheel 604, an on-off valve hole 7 and a plug 8.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
As shown in fig. 1-3, the pilot-operated hydraulic control check valve provided by the utility model comprises a valve body 1, wherein a first oil duct 2 and a second oil duct 3 are arranged on one side surface of the valve body 1, the first oil duct 2 and the second oil duct 3 are arranged in parallel, a switch valve hole 7 which is perpendicular to and communicated with the second oil duct 3 is arranged on the left side of the second oil duct 3, a switch valve 6 is connected to the inside of the switch valve hole 7 in a threaded manner, a check valve assembly hole 4 which is perpendicular to and communicated with the first oil duct 2 is arranged on the left side of the first oil duct 2, a check valve assembly 5 is installed in the check valve assembly hole 4 in a threaded manner, and the lower end of the check valve assembly hole 4 is an oil return opening 101; the check valve assembly 5 comprises a valve seat 501, an outer valve core 502 and an inner valve core 503, the inner valve core 503 is connected inside the outer valve core 502 in a sliding mode, and the valve seat 501 is connected inside the check valve assembly hole 4 in a threaded mode to fix the outer valve core 502; the outer valve core 502 is provided with a through hole 504, and the through hole 504 is communicated with the second pressure cavity 102 of the valve body 1; the second oil duct 3 communicates with a cavity where an end face of the inner valve core 503 is located, the second oil duct 3 serves as a first pressure chamber, and the first pressure chamber and the second pressure chamber 102 communicate with a working chamber inside the valve body 1.
The first oil passage 2 and the second oil passage 3 are oil passages formed by drilling holes of a drill bit, and the heads of the first oil passage 2 and the second oil passage 3 are plugged by plugs connected with ZG1/8 through threads for sealing. And when the ZG1/8 plug is sealed, a raw material tape is wound or sealant is coated, so that the sealing property of the connecting position is ensured. The first oil duct 2 and the second oil duct 3 are processed by drill bits, so that the number of cast oil passages of the valve body 1 is reduced, and the processing difficulty of the valve body 1 is reduced.
The switching valve 6 comprises a switching valve seat 601 which is connected with the valve body 1 in a threaded manner, a locking nut 602 is connected with the internal thread of the switching valve seat 601 in a threaded manner, the upper end of the locking nut 602 is fixed with a hand wheel 604 through a transverse inserting bolt, a sealing washer 603 is fixedly connected to the lower end of the locking nut 602, and the locking nut 602 is driven by rotating the hand wheel 604 to spirally lift in the switching valve seat 601. When sealing washer 603 is in the lower position, the second oil gallery 3 is closed to the check valve assembly bore 4 by contact with sealing washer 603.
And a plug 8 with a sealing ring is connected to the other end of the check valve assembly hole 4 far away from the oil return port 101 in a threaded manner. The plug 8 is used for plugging the installation position of the check valve component 5, the attractiveness of the valve body 1 is improved, meanwhile, the position is sealed, and oil leakage of the check valve component 5 is prevented from leaking to the outside of the valve body.
The inner valve core 503 is also provided with a valve hole 506 connected with the blind hole 505 by being provided with the blind hole 505 communicated with the oil return port 101 in the middle of the inner valve core 503. The blind hole 505 is used as an oil return channel, and the diameter of the blind hole 505 and the oil return opening 101 is larger than that of a pilot oil way, so that oil can be quickly returned when pressure is relieved, and the influence on a hydraulic system in the valve body 1 due to the back pressure of the oil return way is prevented.
By sleeving the spring 507 outside the inner valve core 503, one end of the spring 507 abuts against a step surface fixedly arranged outside the inner valve core 503, and the other end of the spring 507 abuts against a step surface inside the outer valve core 502. The spring 507 provides a spring force for resetting the inner spool 503.
Example (b): the second oil passage 3 serves as a first pressure chamber, when the pressure rises to overcome the spring force of the spring 507, the inner valve core 503 is pushed to move, the inner valve core 503 moves to a position where the valve hole 506 is communicated with the through hole 504, and when the position is reached, the pressure oil of the second pressure chamber 102 sequentially passes through the through hole 504, the valve hole 506 and the blind hole 505 to enter the oil return port 101, so that the pressure oil is relieved, and the second oil passage 3 serves as a pilot oil passage to push the inner valve core 503 to move in the process so as to control the opening of the one-way valve. After the pressure oil of the second pressure chamber 102 drops, the inner spool 503 is returned to the initial state by the spring force of the spring 507. The sequential circular motion realizes the control of the pilot oil path on the one-way valve, and when the pilot oil path is too large or too small and needs to be closed, the corresponding adjustment can be realized by rotating the hand wheel 604 for adjustment.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A pilot-operated type hydraulic control one-way valve comprises a valve body (1), and is characterized in that a first oil duct (2) and a second oil duct (3) are arranged on one side face of the valve body (1), a switch valve hole (7) which is perpendicular to and communicated with the second oil duct (3) is arranged on the left side of the second oil duct (3), a switch valve (6) is connected to the switch valve hole (7) in a threaded manner, a one-way valve assembly hole (4) which is perpendicular to and communicated with the first oil duct (2) is arranged on the left side of the first oil duct (2), a one-way valve assembly (5) is installed in the one-way valve assembly hole (4) in a threaded manner, and an oil return opening (101) is formed in the lower end of the one-way valve assembly hole (4); the check valve assembly (5) comprises a valve seat (501), an outer valve core (502) and an inner valve core (503), the inner valve core (503) is connected to the inner portion of the outer valve core (502) in a sliding mode, and the valve seat (501) is connected to the inner portion of the check valve assembly hole (4) in a threaded mode to fix the outer valve core (502); the outer valve core (502) is provided with a through hole (504), the through hole (504) is communicated with the second pressure cavity (102) of the valve body (1), and the second oil channel (3) is communicated with a cavity where the end face of the inner valve core (503) is located.
2. The pilot-operated pilot-controlled check valve according to claim 1, wherein the first oil passage (2) and the second oil passage (3) are arranged in parallel and are formed by drilling holes of a drill bit, and the heads of the first oil passage (2) and the second oil passage (3) are blocked by plugs ZG1/8 for sealing.
3. The pilot-operated pilot-controlled check valve according to claim 1, wherein the on-off valve (6) comprises an on-off valve seat (601) which is installed on the valve body (1) in a threaded connection manner, a locking nut (602) is connected to the internal threads of the on-off valve seat (601), a hand wheel (604) is fixedly connected to the upper end of the locking nut (602), a sealing gasket (603) is fixedly connected to the lower end of the locking nut (602), and the sealing gasket (603) is located at the lower end and closes the second oil channel (3) to the check valve assembly hole (4).
4. The pilot-operated pilot-controlled check valve according to claim 1, wherein the other end of the check valve assembly hole (4) far from the oil return port (101) is threadedly connected with a plug (8) with a sealing ring.
5. The pilot-operated pilot-controlled check valve according to claim 1, characterized in that a blind hole (505) communicated with the oil return port (101) is formed in the middle of the inner valve core (503), and the inner valve core (503) is further provided with a valve hole (506) connected with the blind hole (505).
6. The pilot-operated pilot-controlled check valve according to claim 1, wherein a spring (507) is sleeved outside the inner valve core (503), one end of the spring (507) abuts against a step surface fixedly arranged outside the inner valve core (503), and the other end of the spring (507) abuts against a step surface inside the outer valve core (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122045856.9U CN215980998U (en) | 2021-08-27 | 2021-08-27 | Pilot-operated type hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122045856.9U CN215980998U (en) | 2021-08-27 | 2021-08-27 | Pilot-operated type hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215980998U true CN215980998U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122045856.9U Active CN215980998U (en) | 2021-08-27 | 2021-08-27 | Pilot-operated type hydraulic control one-way valve |
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| Country | Link |
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| CN (1) | CN215980998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738920A (en) * | 2021-08-27 | 2021-12-03 | 华煤发展科技有限公司 | Pilot-operated type hydraulic control one-way valve |
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2021
- 2021-08-27 CN CN202122045856.9U patent/CN215980998U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738920A (en) * | 2021-08-27 | 2021-12-03 | 华煤发展科技有限公司 | Pilot-operated type hydraulic control one-way valve |
| CN113738920B (en) * | 2021-08-27 | 2024-09-27 | 华煤发展科技有限公司 | Pilot-operated type hydraulic control one-way valve |
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