CN218935366U - Pilot-operated three-way flow control valve - Google Patents
Pilot-operated three-way flow control valve Download PDFInfo
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- CN218935366U CN218935366U CN202223203676.XU CN202223203676U CN218935366U CN 218935366 U CN218935366 U CN 218935366U CN 202223203676 U CN202223203676 U CN 202223203676U CN 218935366 U CN218935366 U CN 218935366U
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Abstract
The utility model belongs to the technical field of control valve structural design, and particularly relates to a pilot-operated three-way flow control valve. The valve comprises a valve body, a valve cover, a valve seat, a valve rod, a main valve core, a flow limiting valve core and a flow limiting seat; the valve body is of a cross-shaped pipe structure and comprises an ingress pipe, an egress pipe, a mounting pipe and an overflow pipe; the valve cover and the valve seat are respectively connected with the openings of the mounting pipe and the overflow pipe; the main valve core comprises a first core body; the control valve has the advantages of simple and compact structure, convenient use, structural characteristics of the traditional throttle valve and a using method, good maintainability, few parts, convenient use, direct replacement of the existing throttle valve to realize bypass leading-out function, no need of changing the original transmission pipeline structure, no influence on the operation of the original system, and low use and maintenance cost compared with the addition of a new throttle valve.
Description
Technical Field
The utility model belongs to the technical field of control valve structural design, and particularly relates to a pilot-operated three-way flow control valve.
Background
The flow control valve is very common node control equipment in various pipelines and transmission systems, and in some application scenes, such as medium detection, pressure control and other situations, a branch with stable output is required to be led out on a main transmission path; the branch requires a small-flow bypass output which is continuously kept stable in the process of large-flow transmission and adjustment of the main transmission path; the traditional method is to directly use a small throttle valve to access the main transmission path, which requires adding new pipelines and joints, thus complicating the control system structure, adding additional implementation cost, and simultaneously reducing the integrity of the pipelines, increasing leakage points and bringing adverse effects on the stability of the system due to the need of opening new interfaces on the vermilion transmission path.
Disclosure of Invention
The utility model aims to realize pilot bypass flow control by introducing an active control structure of a double valve core on the basis of a traditional three-way flow control valve, and realize flow regulation of a main transmission path and stable output of bypass small flow by utilizing a single valve.
In order to achieve the above purpose, the present utility model adopts the following technical scheme.
A pilot-operated three-way flow control valve comprises a valve body 1, a valve cover 2, a valve seat 3, a valve rod 4, a main valve core 5, a flow limiting valve core 6 and a flow limiting seat 7;
the valve body 1 is of a cross-shaped pipe structure and comprises an ingress pipe 10 and an egress pipe 13 in the horizontal direction, and an installation pipe 11 and an overflow pipe 12 in the vertical direction;
the valve cover 2 and the valve seat 3 are respectively connected with an upper end opening of the installation tube 11 and a lower end opening of the overflow tube 12 through bolt groups;
the center of the valve cover 2 is provided with a valve rod mounting hole 2a, and the valve rod 4 is arranged in the valve rod mounting hole 2a in a vertically movable manner;
the main valve core 5 is fixed at the lower end of the valve rod 4, and the main valve core 5 comprises a first core body 50 which can block the communication port between the ingress pipe 10 and the overflow pipe 12;
the flow limiting seat 7 is arranged in the opening at the lower end of the overflow pipe 12, and the flow limiting seat 7 comprises a flow limiting part 70 at the upper end and a supporting part 71 at the lower end; the top of the flow-limiting part 70 is provided with a converging groove 74, and the center of the converging groove 74 is provided with a flow-limiting pore passage 701; the center of the supporting part 71 is provided with a limiting screw hole 72 coaxially communicated with the flow limiting pore 701, and the outer side of the supporting part 71 is provided with a outflow hole 73 communicated with the flow limiting pore 701;
the flow-limiting valve core 6 comprises a second core body 60 capable of blocking the flow-converging groove 74, an adjusting rod 61 arranged at the bottom of the second core body 60 and inserted into the limiting screw hole 72 after downwards passing through the flow-limiting hole 701, and an external thread arranged at the lower end of the adjusting rod 61 for screwing into the limiting screw hole 72.
A further improvement or preferred embodiment of the pilot-operated three-way flow control valve further comprises a lock nut 8 disposed at a lower end of the adjustment rod 61, wherein an upper end surface of the lock nut 8 abuts against a bottom of the support portion 71 to adjust the rod 61.
In a further improvement or preferred embodiment of the pilot-operated three-way flow control valve, the valve seat 3 has an L-shaped pipe structure and comprises a connecting pipe connected with the overflow pipe 12 through a bolt set and a water outlet pipe head perpendicular to the connecting pipe; the bottom of the connecting pipe is provided with an adjusting hole which is coaxially opposite to the flow limiting hole passage 701, and a sealing bolt 9 is arranged in the adjusting hole.
In a further development or preferred embodiment of the pilot operated three-way flow control valve described above, the top of the valve seat 3 is provided with a restrictor mounting groove, in which the lower half of the restrictor 70 is fixed, and the upper part is inserted into the overflow pipe 12.
In a further improvement or preferred embodiment of the pilot-operated three-way flow control valve, an upper limit post 51 is disposed at the bottom of the first core 50, and the upper limit post 51 extends downward and into the overflow pipe 12; the top of the second core 60 is provided with a lower limit post 62 opposite to the upper limit post 51.
Further improvements or preferred embodiments of the pilot-operated three-way flow control valve described above, the inlet pipe 10, the outlet pipe 13, the mounting pipe 11 and the outlet pipe 12 are provided with flange connections, respectively.
The beneficial effects are that:
the pilot-operated three-way flow control valve is simple and compact in structure and convenient to use, has the structural characteristics of a traditional throttle valve and a using method, is good in maintainability, and can be used as the traditional throttle valve to construct a transmission structure capable of stabilizing bypass output and conveniently adjusting the size of bypass flow by utilizing an overflow pipeline, a flow limiting valve core and a flow limiting seat. The control valve has the advantages of few parts, convenient use and good stability, can directly replace the existing throttle valve to realize the bypass leading-out function, does not need to change the original transmission pipeline structure compared with the new throttle valve, does not influence the operation of the original system, and has low use and maintenance cost.
Drawings
FIG. 1 is a front view of a pilot operated three-way flow control valve;
FIG. 2 is a side view of a pilot operated three-way flow control valve;
FIG. 3 is a cross-sectional view of a pilot operated three-way flow control valve;
wherein the reference numerals include:
Detailed Description
The present utility model will be described in detail with reference to specific examples.
The pilot-operated three-way flow control valve is mainly used as throttling and bypass drainage equipment in various liquid fluid transmission systems. The main structure of the valve is shown in figures 1, 2 and 3, and mainly comprises a valve body 1, a valve cover 2, a valve seat 3, a valve rod 4, a main valve core 5, a flow limiting valve core 6 and a flow limiting seat 7;
the valve body 1 is of a cross-shaped pipe structure and comprises an ingress pipe 10 and an egress pipe 13 in the horizontal direction, and an installation pipe 11 and an overflow pipe 12 in the vertical direction;
when the device is specifically used, the ingress pipe is connected to a pipeline of a section of the transmission pipeline, which is close to the medium source, the egress pipe is connected to a subsequent processing flow, the mounting pipe is used for supporting and fixing, meanwhile, the control valve is conveniently controlled, the overflow pipe is used for leading out bypass tributary, and in the specific use process, necessary sealing treatment, including but not limited to sealing rings, glue seals and other treatment modes, are conventional treatment means for connecting and fixing various pipelines and control valves, and are not repeated herein.
Wherein, the valve cover 2 and the valve seat 3 are respectively connected with the upper end opening of the installation tube 11 and the lower end opening of the overflow tube 12 through bolt groups;
the center of the valve cover 2 is provided with a valve rod mounting hole 2a, and the valve rod 4 is arranged in the valve rod mounting hole 2a in a vertically movable manner;
the main valve core 5 is fixed at the lower end of the valve rod 4, and the main valve core 5 comprises a first core body 50 which can block the communication port between the ingress pipe 10 and the overflow pipe 12;
the flow limiting seat 7 is arranged in the opening at the lower end of the overflow pipe 12, and the flow limiting seat 7 comprises a flow limiting part 70 at the upper end and a supporting part 71 at the lower end; the top of the flow-limiting part 70 is provided with a converging groove 74, and the center of the converging groove 74 is provided with a flow-limiting pore passage 701; the center of the supporting part 71 is provided with a limiting screw hole 72 coaxially communicated with the flow limiting pore 701, and the outer side of the supporting part 71 is provided with a outflow hole 73 communicated with the flow limiting pore 701;
the flow-limiting valve core 6 comprises a second core body 60 capable of blocking the flow-converging groove 74, an adjusting rod 61 arranged at the bottom of the second core body 60 and inserted into the limiting screw hole 72 after downwards passing through the flow-limiting hole 701, and an external thread arranged at the lower end of the adjusting rod 61 for screwing into the limiting screw hole 72.
In a specific use process, the valve rod 4 is controlled to move up and down to drive the Zhu Faxin to move up and down so as to change the size of the flow passage and further control the flow state between the ingress pipe 10 and the egress pipe 13. When the main transmission path operates, part of fluid enters the overflow pipe, the flow limiting valve core is adjusted to move up and down through the rotation adjusting rod 61, so that the flow channel size of the overflow bypass is changed, the overflow flow of the bypass is controlled, and when the position of the overflow valve core is fixed, the overflow bypass can continuously output stable bypass tributary for use because the overflow bypass flow is far smaller than the flow of the main transmission path.
In order to keep the position of the overflow valve core stable, a locking nut 8 is further arranged at the lower end of the adjusting rod 61 in the embodiment, and the upper end surface of the locking nut 8 abuts against the bottom of the supporting part 71 to lock the adjusting rod 61 after the bypass parameter is determined.
For convenience of operation, use and maintenance, the valve seat 3 in this embodiment is a commonly used L-shaped pipe structure, and mainly includes a connection pipe connected to the overflow pipe 12 through a bolt set, and a water outlet pipe head perpendicular to the connection pipe; the bottom of the connecting pipe is provided with an adjusting hole which is coaxially opposite to the flow limiting hole passage 701, and a sealing bolt 9 is arranged in the adjusting hole.
Further, in order to facilitate the disassembly and assembly, a flow-limiting seat mounting groove is provided at the top of the valve seat 3, and the lower half of the flow-limiting part 70 is fixed in the flow-limiting seat mounting groove, and the upper handle part is inserted into the overflow pipe 12.
In particular, in some cases, it is necessary to keep the bypass tributary capable of continuous and stable output without being affected by the transmission state of the main transmission path, in order to avoid bypass interruption caused by the interruption of the main transmission path, in a modification, an upper limit post 51 may be provided at the bottom of the first core 50, and the upper limit post 51 may extend downward and into the overflow pipe 12; the top of the second core 60 is provided with a lower limit post 62 facing the upper limit post 51.
In a specific use process, after the bypass channel is opened, the lowest position of the main valve core can be limited through the upper limiting column and the lower limiting column, and the minimum closing parameter of the main valve core can be limited by reasonably setting the size parameter, so that the bypass can obtain effective flow.
In particular, it is also possible to construct a bypass flow-guiding structure comprising a flow-guiding duct in the housing wall of the valve body 1, which duct communicates directly with the inlet pipe 10 and the overflow pipe 12.
For the convenience of the connection and assembly of the pipelines, flange connection parts are respectively arranged at the pipe openings of the ingress pipe 10, the egress pipe 13, the installation pipe 11 and the overflow pipe 12.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (6)
1. The pilot-operated three-way flow control valve is characterized by comprising a valve body (1), a valve cover (2), a valve seat (3), a valve rod (4), a main valve core (5), a flow limiting valve core (6) and a flow limiting seat (7);
the valve body (1) is of a cross-shaped pipe structure and comprises an ingress pipe (10) and an egress pipe (13) in the horizontal direction, and an installation pipe (11) and an overflow pipe (12) in the vertical direction;
the valve cover (2) and the valve seat (3) are respectively connected with an upper end opening of the installation pipe (11) and a lower end opening of the overflow pipe (12) through bolt groups;
a valve rod mounting hole (2 a) is formed in the center of the valve cover (2), and the valve rod (4) is arranged in the valve rod mounting hole (2 a) in a vertically movable manner;
the main valve core (5) is fixed at the lower end of the valve rod (4), and the main valve core (5) comprises a first core body (50) which can block a communication port between the ingress pipe (10) and the overflow pipe (12);
the flow limiting seat (7) is arranged in an opening at the lower end of the overflow pipe (12), and the flow limiting seat (7) comprises a flow limiting part (70) at the upper end and a supporting part (71) at the lower end; a converging groove (74) is arranged at the top of the flow-limiting part (70), and a flow-limiting pore canal (701) is arranged in the center of the converging groove (74); a limiting screw hole (72) which is coaxially communicated with the flow limiting pore passage (701) is arranged in the center of the supporting part (71), and a outflow hole (73) which is communicated with the flow limiting pore passage (701) is arranged at the outer side of the supporting part (71);
the flow limiting valve core (6) comprises a second core body (60) capable of blocking the flow converging groove (74) and an adjusting rod (61) arranged at the bottom of the second core body (60) and inserted into the limiting screw hole (72) after downwards passing through the flow limiting hole (701), and external threads are arranged at the lower end of the adjusting rod (61) so as to be screwed into the limiting screw hole (72).
2. The pilot-operated three-way flow control valve according to claim 1, further comprising a lock nut (8) provided at a lower end of the adjustment rod (61), the lock nut (8) having an upper end surface abutting against a bottom of the support portion (71) to adjust the rod (61).
3. The pilot-operated three-way flow control valve according to claim 1, characterized in that the valve seat (3) is of an L-shaped pipe structure, comprising a connecting pipe connected with the overflow pipe (12) by a bolt group, and a water outlet pipe head perpendicular to the connecting pipe; the bottom of the connecting pipe is provided with an adjusting hole which is coaxially opposite to the flow limiting pore passage (701), and a sealing bolt (9) is arranged in the adjusting hole.
4. The pilot-operated three-way flow control valve according to claim 1, characterized in that the top of the valve seat (3) is provided with a restrictor mounting groove in which the lower half of the restrictor (70) is fixed, the upper part being inserted into the overflow pipe (12).
5. The pilot-operated three-way flow control valve according to claim 1, characterized in that an upper limit post (51) is provided at the bottom of the first core (50), the upper limit post (51) extending downwards and into the overflow pipe (12); and a lower limit column (62) opposite to the upper limit column (51) is arranged at the top of the second core body (60).
6. The pilot-operated three-way flow control valve according to claim 1, wherein flange connection portions are provided at the pipe mouths of the introduction pipe (10), the delivery pipe (13), the installation pipe (11), and the overflow pipe (12), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223203676.XU CN218935366U (en) | 2022-11-30 | 2022-11-30 | Pilot-operated three-way flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223203676.XU CN218935366U (en) | 2022-11-30 | 2022-11-30 | Pilot-operated three-way flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218935366U true CN218935366U (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223203676.XU Active CN218935366U (en) | 2022-11-30 | 2022-11-30 | Pilot-operated three-way flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218935366U (en) |
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2022
- 2022-11-30 CN CN202223203676.XU patent/CN218935366U/en active Active
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