Single-seat self-operated pressure regulating valve

Abstract

The utility model discloses a single-seat self-operated pressure regulating valve which comprises a valve seat structure, a sealing push rod, a middle-section connecting piece and a pneumatic structure, the surface of the valve seat structure is fixedly connected with the sealing push rod in a butt joint mode, the surface of the sealing push rod is fixedly connected with the middle-section connecting piece in a butt joint mode, and the surface of the middle-section connecting piece is fixedly connected with the pneumatic structure. According to the single-seat self-operated pressure regulating valve, the valve seat structure, the middle-section connecting piece and the pneumatic structure are arranged, so that the single-seat self-operated pressure regulating valve is roughly divided into three sections, the three sections are mutually extruded and butted and are connected in series through the long screw rod, the number of fixing structures of the single-seat self-operated pressure regulating valve is reduced, and the single-seat self-operated pressure regulating valve is reduced. The device is simple in structure and convenient to maintain and disassemble, by arranging a pneumatic structure and a sealing push rod, the operation path of the device is shortened, the response speed is increased, the device is more sensitive, the length of a push rod of an existing device is shortened, and a spring is placed in the pneumatic structure.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to a single-seat self-operated pressure regulating valve. Background Technology

[0002] A self-operated pressure regulating valve is an automatic control valve that requires no external power source. It relies on the pressure changes of the regulated medium itself to control the opening and closing of the valve, thereby achieving pressure regulation. This valve is widely used in automated control systems in industries such as petroleum, chemical, power, and heating, and has advantages such as simple structure, reliable operation, energy saving, and environmental friendliness.

[0003] Existing valve devices have many fixed structures, making them difficult to disassemble and repair when damaged. In addition, the operating path of existing devices is long and the response speed is slow. Therefore, a single-seat self-operated pressure regulating valve is proposed. Utility Model Content

[0004] The main objective of this invention is to provide a single-seat self-operated pressure regulating valve, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A single-seat self-operated pressure regulating valve includes a valve seat structure, a sealing push rod, a middle section connector, and a pneumatic structure. The sealing push rod is fixedly connected to the surface of the valve seat structure, the middle section connector is fixedly connected to the surface of the sealing push rod, and the pneumatic structure is fixedly connected to the surface of the middle section connector. A long screw rod is spirally connected to the surface of the pneumatic structure.

[0007] Preferably, the valve seat structure includes a valve body, a flow chamber, a docking valve seat, a sealing mounting groove, a sealing groove, and a mounting hole. The flow chamber is fixedly provided on the inner surface of the valve body, and the docking valve seat is fixedly provided on the surface of the flow chamber. The sealing mounting groove is fixedly provided on the inner surface of the valve body, the sealing groove is fixedly provided on the surface of the valve body, and the mounting hole is fixedly provided on the surface of the valve body.

[0008] Preferably, the sealing push rod includes a sealing sleeve, a push rod, a corrugated seal, a threaded head, and a valve core. The push rod is movably fitted inside the sealing sleeve, and the corrugated seal is movably fitted on the surface of the push rod. A threaded head is fixedly provided on one end surface of the push rod, and a valve core is fixedly provided on the other end surface of the push rod.

[0009] Preferably, the middle section connector includes a docking member, a connecting hole, a through hole, a docking ring, and a sealing ring. The docking member has a connecting hole fixedly formed on its surface, a through hole fixedly formed on its surface, a docking ring fixedly formed on its top surface, and a sealing ring fixedly formed on its surface.

[0010] Preferably, the pneumatic structure includes a mounting cover, a fixing hole, a push plate, an air bladder, a docking nozzle, and a return spring. The mounting cover has a fixing hole fixedly opened on its surface, the push plate is movably docked inside the mounting cover, the air bladder is provided inside the mounting cover, the docking nozzle is fixedly provided on the surface of the mounting cover, and the return spring is fixedly provided on the surface of the push plate.

[0011] Preferably, the long screw rod passes through the mounting hole, the connecting hole and the fixing hole in sequence for fixed connection, a docking ring is fixedly connected to one end surface of the reset spring, the threaded head of the sealing push rod is screwed to the push plate, and the docking nozzle docks with the connecting tube to inflate its airbag.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model discloses a single-seat self-operated pressure regulating valve. By setting a valve seat structure, a middle connecting piece, and a pneumatic structure, the device is roughly divided into three sections, which are mutually squeezed and connected together and connected in series using a long screw rod. This reduces the fixed structure and facilitates maintenance and disassembly. By setting a pneumatic structure and a sealing push rod, the operating path of the device is shortened, the response speed is improved, and the device is more sensitive. The push rod length of the existing device is shortened, and the spring is placed inside the pneumatic structure. At the same time, the layered compression of the device improves the sealing performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a single-seat self-operated pressure regulating valve according to the present invention.

[0015] Figure 2 This is a schematic diagram of the valve seat structure of a single-seat self-operated pressure regulating valve according to the present invention;

[0016] Figure 3 This is a schematic diagram of the sealing push rod of a single-seat self-operated pressure regulating valve according to the present invention;

[0017] Figure 4 This is a schematic diagram of the middle section connector of a single-seat self-operated pressure regulating valve according to this utility model;

[0018] Figure 5 This is a schematic diagram of the pneumatic structure of a single-seat self-operated pressure regulating valve according to the present invention.

[0019] In the diagram: 1. Valve seat structure; 101. Valve body; 102. Flow chamber; 103. Connecting valve seat; 104. Sealing mounting groove; 105. Sealing groove; 106. Mounting hole; 2. Sealing push rod; 201. Sealing sleeve; 202. Push rod; 203. Corrugated seal; 204. Threaded head; 205. Valve core; 3. Intermediate connecting piece; 301. Connecting piece; 302. Connecting hole; 303. Through hole; 304. Connecting ring; 305. Sealing ring; 4. Pneumatic structure; 401. Mounting cover; 402. Fixing hole; 403. Push plate; 404. Air bladder; 405. Connecting nozzle; 406. Return spring; 5. Long screw rod. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-5 As shown, a single-seat self-operated pressure regulating valve includes a valve seat structure 1, a sealing push rod 2, a middle section connector 3, and a pneumatic structure 4. The sealing push rod 2 is fixedly connected to the surface of the valve seat structure 1, the middle section connector 3 is fixedly connected to the surface of the sealing push rod 2, the pneumatic structure 4 is fixedly connected to the surface of the middle section connector 3, and a long screw rod 5 is spirally connected to the surface of the pneumatic structure 4. The valve seat structure 1 is used for the flow of substances, and the sealing push rod 2 cooperates with the pneumatic structure 4 to open and close the valve. The middle section connector 3 improves the sealing performance.

[0022] Furthermore, the valve seat structure 1 includes a valve body 101, a flow chamber 102, a docking valve seat 103, a sealing mounting groove 104, a sealing groove 105, and a mounting hole 106. The flow chamber 102 is fixedly formed on the inner surface of the valve body 101, and the docking valve seat 103 is fixedly formed on the surface of the flow chamber 102. The sealing mounting groove 104 is fixedly formed on the inner surface of the valve body 101, the sealing groove 105 is fixedly formed on the surface of the valve body 101, and the mounting hole 106 is fixedly formed on the surface of the valve body 101. The valve seat structure 1 is an existing device structure, with some connection structures modified to dock with other components.

[0023] Furthermore, the sealing push rod 2 includes a sealing sleeve 201, a push rod 202, a corrugated seal 203, a threaded head 204, and a valve core 205. The push rod 202 is movably sleeved inside the sealing sleeve 201, and the corrugated seal 203 is movably sleeved on the surface of the push rod 202. A threaded head 204 is fixedly provided on one end surface of the push rod 202, and a valve core 205 is fixedly provided on the other end surface of the push rod 202. The sealing sleeve 201 is provided with sealing materials such as the corrugated seal 203 to ensure the sealing performance of the push rod 202 when it moves up and down and prevent leakage. The movement of the push rod 202 pushes the valve core 205 into the docking valve seat 103 for closure.

[0024] Furthermore, the intermediate connecting member 3 includes a docking member 301, a connecting hole 302, a through hole 303, a docking ring 304, and a sealing ring 305. The docking member 301 has a connecting hole 302 fixedly opened on its surface, a through hole 303 fixedly opened on its surface, a docking ring 304 fixedly installed on its top surface, and a sealing ring 305 fixedly installed on its surface. The intermediate connecting member 3 is used for mutual docking and sealing of the structure, and its sealing push rod is fixedly sleeved inside to improve the sealing performance.

[0025] Furthermore, the pneumatic structure 4 includes a mounting cover 401, a fixing hole 402, a push plate 403, an air bladder 404, a docking nozzle 405, and a return spring 406. The mounting cover 401 has a fixing hole 402 fixedly opened on its surface. The push plate 403 is movably docked inside the mounting cover 401. The air bladder 404 is disposed inside the mounting cover 401. The docking nozzle 405 is fixedly disposed on the surface of the mounting cover 401. The return spring 406 is fixedly disposed on the surface of the push plate 403. The air inlet of the air bladder 404 is connected to the docking nozzle 405. After the docking nozzle 405 is inflated by air intake, it pushes the push plate 403 downward. When the gas pressure decreases, the return spring 406 pushes the push plate 403 up, thereby opening the valve.

[0026] Furthermore, the long screw rod 5 passes through the mounting hole 106, the connecting hole 302, and the fixing hole 402 in sequence for fixed connection. One end surface of the return spring 406 is fixedly connected to the docking ring 304. The threaded head 204 of the sealing push rod 2 is screwed and fixed to the push plate 403. The docking nozzle 405 docks with the connecting tube to inflate its airbag 404. The entire device is easy to disassemble and maintain, and improves response speed, shortens the path, and improves sealing performance.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A single seat, self-contained pressure regulating valve characterized by: It include valve seat structure (1), sealing push rod (2), middle section connecting piece (3) and pneumatic structure (4), the surface of valve seat structure (1) fixed butt joint has sealing push rod (2), the surface of sealing push rod (2) fixed butt joint has middle section connecting piece (3), the surface of middle section connecting piece (3) fixed connection has pneumatic structure (4), the surface of pneumatic structure (4) screw connection has long screw rod (5).

2. A single seat, self-contained pressure regulating valve according to claim 1, characterized in that: The valve seat structure (1) includes a valve body (101), a flow-through cabin (102), a butt joint valve seat (103), a sealing installation groove (104), a sealing groove (105) and an installation hole (106), the inside surface of the valve body (101) is fixedly provided with a flow-through cabin (102), the surface of the flow-through cabin (102) is fixedly provided with a butt joint valve seat (103), the inside surface of the valve body (101) is fixedly provided with a sealing installation groove (104), the surface of the valve body (101) is fixedly provided with a sealing groove (105), and the surface of the valve body (101) is fixedly provided with an installation hole (106).

3. A single seat, self-contained pressure regulating valve according to claim 2, characterized in that: The sealing push rod (2) includes a sealing sleeve (201), a push rod (202), a corrugated sealing element (203), a threaded head (204) and a valve core (205), the inside of the sealing sleeve (201) movably sheaths a push rod (202), the surface of the push rod (202) movably sheaths a corrugated sealing element (203), one end of the push rod (202) is fixedly provided with a threaded head (204), and the other end of the push rod (202) is fixedly provided with a valve core (205).

4. A single seat, self-contained pressure regulating valve according to claim 3, characterized in that: The middle section connecting piece (3) includes an abutting piece (301), a connecting hole (302), a through hole (303), an abutting ring (304) and a sealing ring (305), the surface of the abutting piece (301) is fixedly provided with a connecting hole (302), the surface of the abutting piece (301) is fixedly provided with a through hole (303), the top end surface of the abutting piece (301) is fixedly provided with an abutting ring (304), and the surface of the abutting piece (301) is fixedly provided with a sealing ring (305).

5. A single seat, self-contained pressure regulating valve according to claim 4, characterized in that: The pneumatic structure (4) includes a mounting cover (401), a fixed hole (402), a push plate (403), an air bag (404), an abutting nozzle (405) and a return spring (406), the surface of the mounting cover (401) is fixedly provided with a fixed hole (402), the inside of the mounting cover (401) movably abuts a push plate (403), the inside of the mounting cover (401) is provided with an air bag (404), the surface of the mounting cover (401) is fixedly provided with an abutting nozzle (405), and the surface of the push plate (403) is fixedly provided with a return spring (406).

6. A single seat, self-contained pressure regulating valve according to claim 5, characterized in that: The long screw rod (5) passes through the mounting hole (106), the connecting hole (302) and the fixing hole (402) in succession for fixed connection. One end of the return spring (406) is fixedly connected to the docking ring (304). The threaded head (204) of the sealing push rod (2) is screwed to the push plate (403). The docking nozzle (405) docks with the connecting tube to inflate its airbag (404).

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