CN220470752U - Leak-proof pressure-resistant hydraulic control valve - Google Patents

Abstract

The utility model provides a leak-proof and pressure-resistant hydraulic control valve, which includes a sealing ring, an extrusion spring, a sealing cavity and a push ring. A sealing ring is embedded on the right side of the sealing cavity, and a push ring is embedded inside the sealing cavity. The left end face of the ring is provided with an extrusion spring. This utility model is used during the use of the hydraulic control valve body. The second internal sealing gasket will support the extrusion spring under the support force of the pressure ring, so that the extrusion spring exerts force on the pushing ring. The squeezing force causes the push ring to squeeze the first inner sealing gasket, and the first inner sealing gasket exerts an outward squeezing force on the sealing ring, causing a certain deformation of the sealing ring and affecting the connection between the mounting flange and the external pipe. Seal the gap between the installation flange and the external pipe to avoid easy leakage between the installation flange and the external pipe. In this process, the first internal sealing gasket makes the sealing between the push ring and the sealing ring better, and the second The internal sealing gasket provides better sealing between the pressure ring and the sealing chamber.

Description

A leak-proof and pressure-resistant hydraulic control valve

Technical field

The utility model relates to the technical field of hydraulic control valves, specifically a leak-proof and pressure-resistant hydraulic control valve.

Background technique

Hydraulic control valves are the most advanced pipeline control equipment at home and abroad. They are mainly installed at the turbine inlet of hydropower stations and used as turbine inlet valves; or installed at the water pump outlets of various pump stations such as water conservancy, electric power, water supply and drainage, etc., to replace check valves and The function of the gate valve. When the hydraulic control valve works, the valve cooperates with the pipeline host. According to the principle of hydraulic transition process, through the preset opening and closing program, it effectively eliminates water hammer in the pipeline, achieves reliable cutoff of the pipeline, and protects the pipeline system. Safety role.

Publication No. "CN215567997U" provides a hydraulic control valve. A rotating rod is installed at the left end of the hydraulic mechanism, and the rotating rod passes through the valve body and is fixedly connected to a circular plate. A moving plate is set inside the rotating rod, and the moving plate is slidingly connected to the inner wall of the rotating rod. The snap fit makes the valve core easy to disassemble, replace or repair.

However, there are the following defects in the above technical solutions and the prior art:

The connecting ring in the valve body does not have a corresponding sealing structure, resulting in leakage between the connecting ring and the external pipeline during the later use of the valve body. Once leakage occurs, maintenance personnel need to close the main valve of the external pipeline. It not only affects the production efficiency of the enterprise, but also increases the work intensity of maintenance personnel.

Utility model content

The purpose of this utility model is to provide a leak-proof and pressure-resistant hydraulic control valve to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A leak-proof and pressure-resistant hydraulic control valve, including a hydraulic control valve body, a protective cover and a mounting flange. The upper end surface of the hydraulic control valve body is equipped with a protective cover, and the left and right end surfaces of the hydraulic control valve body are symmetrically fixedly connected. Mounting flange, the right end face of the mounting flange is provided with a sealing component, and the sealing component is used to seal the mounting flange. The inside of the mounting flange is provided with an extrusion component for improving the sealing performance of the sealing component. .

Preferably, the sealing assembly includes a sealing ring, an extrusion spring, a sealing cavity and a push ring. A sealing cavity is provided on the right end of the mounting flange. A sealing ring is embedded on the right side of the sealing cavity. A push ring is embedded inside the cavity, and an extrusion spring is provided on the left end face of the push ring.

Preferably, the extrusion assembly includes an adjustment rod, an anti-falling cover, an extrusion block, a limit cavity and a pressure ring. A limit cavity is provided on the upper side of the installation flange, and a limit cavity is provided inside the limit cavity. Adjusting rod, the lower end of the adjusting rod is equipped with an extrusion block, the upper end of the extrusion block is equipped with an anti-falling cover, and the right side of the lower end of the extrusion block is fitted with a pressure ring.

Preferably, the right end surface of the push ring is fitted with a first internal sealing gasket, and the right end surface of the pressure ring is fitted with a second internal sealing gasket.

Preferably, the first inner sealing gasket and the second inner sealing gasket are both ring-shaped, and the material of the first inner sealing gasket and the second inner sealing gasket is ethylene propylene rubber.

Preferably, the annular side of the mounting flange is provided with through holes up and down, the bottom of the adjusting rod is provided with a follower block, the upper end surface of the adjusting rod is provided with a rotating cap, the right end surface of the extrusion block and the pressure ring The upper side of the left end face is inclined.

Preferably, the through hole is provided with internal threads inside, the annular side of the adjusting rod is provided with external threads, and the external threads mesh with the internal threads, and the through holes are symmetrically opened on the upper and lower sides of the annular side of the mounting flange. On both front and rear sides, the rotating cap is hexagonal in shape, the follower block is circular in shape, and the limiting cavity matches the extrusion block.

Preferably, the push ring matches the sealing cavity, the sealing cavity is connected with the limiting cavity, and the extrusion springs are symmetrically arranged on the upper and lower sides and the front and rear sides of the sealing cavity.

Preferably, mounting holes are symmetrically provided on both front and rear sides of the mounting flange.

Compared with the existing technology, the beneficial effects of this utility model are:

1. This utility sets an extrusion spring to apply extrusion force to the push ring, and the push ring will exert an outward extrusion force on the sealing ring through the first internal sealing gasket, causing the sealing ring to produce a certain deformation and causing a certain deformation to the mounting flange. Seal the gap between the installation flange and the external pipeline to avoid easy leakage between the installation flange and the external pipeline;

2. In this utility model, the adjusting rod drives the extrusion block to move inward, so that the extrusion block can squeeze the pressure ring. At this time, the pressure ring moves outward and exerts force on the extrusion spring through the second internal sealing gasket. Further extrusion force is used to increase the extrusion force of the extrusion spring. When the extrusion force of the extrusion spring is increased, it means that the extrusion force on the sealing ring will be greater, causing the sealing ring to further deform, thereby further Improve the sealing ability of the sealing ring, thereby further improving the leakage-proof and pressure-resistant ability of the installation flange.

Description of drawings

Figure 1 is a schematic diagram of the main structure of the utility model;

Figure 2 is a structural diagram of the installation flange in the utility model;

Figure 3 is a structural diagram of the extrusion assembly in the present utility model;

Figure 4 is a front cross-sectional view of the extrusion component and sealing component of the utility model;

Figure 5 is a right cross-sectional view of the extrusion component and sealing component of the present utility model;

Figure 6 is a partial enlarged view of Figure 4.

In the picture: 1. Hydraulic control valve body; 2. Protective cover; 3. Extrusion assembly; 31. Rotary cap; 32. Adjustment rod; 321. Follower block; 33. Anti-falling cover; 34. Extrusion block; 35 , limit cavity; 36, through hole; 37, pressure ring; 4, mounting flange; 41, mounting hole; 5, sealing component; 51, sealing ring; 52, first internal seal; 53, extrusion Spring; 54, sealing chamber; 55, push ring; 56, second internal sealing gasket.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Please refer to Figures 1-6. This utility model provides a technical solution:

Example 1:

A leak-proof and pressure-resistant hydraulic control valve, including a hydraulic control valve body 1, a protective cover 2 and a mounting flange 4. A protective cover 2 is installed on the upper end face of the hydraulic control valve body 1, and the left and right end faces of the hydraulic control valve body 1 are symmetrically fixed. A mounting flange 4 is connected, and a sealing component 5 is provided on the right end face of the mounting flange 4. The sealing component 5 is used to seal the mounting flange 4. The inside of the mounting flange 4 is provided with a sealing component 5 for improving the sealing. Sexual squeeze component 3.

The sealing assembly 5 includes a sealing ring 51, an extrusion spring 53, a sealing cavity 54 and a push ring 55. A sealing cavity 54 is provided on the right end of the mounting flange 4. A sealing ring 51 is embedded on the right side of the sealing cavity 54. The sealing cavity 54 A push ring 55 is embedded inside, and a squeeze spring 53 is provided on the left end surface of the push ring 55 .

The right end surface of the push ring 55 is fitted with a first internal sealing gasket 52, and the right end surface of the pressure ring 37 is fitted with a second internal sealing gasket 56. Both the first internal sealing gasket 52 and the second internal sealing gasket 56 are ring-shaped. The first inner sealing gasket 52 and the second inner sealing gasket 56 are both made of ethylene propylene rubber. There are two sets of the first inner sealing gasket 52 and the second inner sealing gasket 56, which are ring-shaped first inner seals of ethylene propylene rubber. The gasket 52 has better aging resistance, corrosion resistance and elasticity, thereby improving the sealing performance between the push ring 55 and the sealing ring 51, while the ring-shaped second inner sealing gasket 56 of ethylene propylene rubber has better aging resistance, corrosion resistance and elasticity. The corrosion resistance and elasticity are better, thereby improving the sealing performance between the pressure ring 37 and the sealing cavity 54 .

Mounting holes 41 are symmetrically opened on both front and rear sides of the mounting flange 4. Two sets of mounting flanges 4 are fixedly connected, and the two sets of mounting flanges 4 have the same specifications. The mounting flange 4 passes through the hydraulic control valve body 1. They are connected by welding, and the mounting holes 41 are convenient for external fixing bolts to be inserted inside the mounting flange 4 to connect and fix the hydraulic control valve body 1 and external pipelines.

Example 2:

On the basis of the first embodiment, in this embodiment, the adjusting rod 32 drives the extrusion block 34 to move downward, so that the extrusion block 34 can press down the pressure ring 37. At this time, the pressure ring 37 moves toward Move outside and apply further squeezing force to the squeezing spring 53, thereby increasing the squeezing force of the squeezing spring 53. When the squeezing force of the squeezing spring 53 increases, it means that the squeezing force on the sealing ring 51 will decrease. is larger, the sealing ring 51 is further deformed, thereby further improving the sealing ability of the sealing ring 51 .

The extrusion assembly 3 includes an adjustment rod 32, an anti-falling cover 33, an extrusion block 34, a limit cavity 35 and a pressure ring 37. A limit cavity 35 is provided on the upper side of the mounting flange 4, and a limit cavity 35 is provided inside the limit cavity 35. The adjusting rod 32 has an extrusion block 34 installed at its lower end. An anti-removal cover 33 is installed at the upper end of the extrusion block 34. A pressure ring 37 is attached to the right side of the lower end of the extrusion block 34.

The annular side of the mounting flange 4 is provided with through holes 36 up and down, the bottom of the adjusting rod 32 is provided with a follower block 321, the upper end of the adjusting rod 32 is provided with a rotating cap 31, the right end of the extrusion block 34 and the left end of the pressure ring 37 Both sides are inclined, the through hole 36 is provided with internal threads inside, the annular side of the adjusting rod 32 is provided with external threads, and the external threads mesh with the internal threads. The through holes 36 are symmetrically opened on the upper and lower annular sides of the mounting flange 4. On the side and front and rear sides, the rotating cap 31 is hexagonal in shape, the follower block 321 is circular in shape, the limiting cavity 35 matches the extrusion block 34, the rotating cap 31 and the adjusting rod 32 are connected by welding, and the adjusting rod 32 is connected to the follower block 321 by welding. A circular groove is provided on the upper end of the extrusion block 34, and the circular groove matches the follower block 321. The adjustment rods 32 are symmetrically arranged on the annular side of the mounting flange 4. The through holes 36 with internal threads are provided on the upper and lower sides and the front and rear sides to facilitate the adjustment rod 32 with external threads on the annular side to perform up and down or front and back telescopic movements inside the mounting flange 4, which is a circular follower block 321. It is convenient for the adjustment rod 32 to drive the extrusion block 34 to move. The hexagonal rotating cap 31 is convenient for maintenance personnel to use an external wrench to rotate the adjustment rod 32 clockwise or counterclockwise. The limit cavity 35 will move the extrusion block 34 The limit guide is used to prevent the extrusion block 34 from deflecting or rotating during the displacement movement, and the circular groove facilitates the follower block 321 to be embedded in the upper end surface of the extrusion block 34 for use.

Working principle: During the use of the hydraulic control valve body 1, the second internal sealing gasket 56 will support the extrusion spring 53 under the support of the pressure ring 37, so that the extrusion spring 53 exerts extrusion force on the push ring 55. , causing the push ring 55 to squeeze the first inner sealing gasket 52, and the first inner sealing gasket 52 will exert an outward squeezing force on the sealing ring 51, thereby causing the sealing ring 51 to produce a certain deformation and causing a certain deformation to the mounting flange 4 and the mounting flange 4. The gap between the external pipes is sealed to avoid easy leakage between the installation flange 4 and the external pipes. During this process, the first internal sealing gasket 52 seals the push ring 55 and the sealing ring 51 The second internal sealing gasket 56 makes the sealing between the pressure ring 37 and the sealing cavity 54 better, preventing liquid from penetrating into the limiting cavity 35 .

When it is necessary to increase the extrusion force of the extrusion spring 53, the maintenance personnel only need to use an external wrench to rotate the rotating cap 31 on the upper and lower sides and the front and rear sides of the installation flange 4 clockwise. At this time, the external thread and Under the meshing force of the internal thread, the adjusting rods 32 located on the upper and lower sides and the front and rear sides of the mounting flange 4 will drive the extrusion block 34 to move inward. At this time, the moving extrusion block 34 will move the pressure ring 37 Squeeze, causing the pressure ring 37 to move outward and exert further squeezing force on the squeezing spring 53 through the second inner sealing gasket 56, thereby increasing the squeezing force of the squeezing spring 53. When the squeezing force of the squeezing spring 53 When the force increases, it means that the extrusion force on the sealing ring 51 will be greater, causing the sealing ring 51 to further deform, thereby further improving the sealing ability of the sealing ring 51. When the sealing ability of the sealing ring 51 is further improved, The installation flange 4 has better leakage-proof and pressure-resistant capabilities.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. , substitutions and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. The utility model provides a leak protection pressure-resistant type hydraulically controlled valve, includes hydraulically controlled valve body (1), protective cover (2) and installation ring flange (4), its characterized in that: the hydraulic control valve body (1) up end is installed protective cover (2), terminal surface symmetry fixedly connected with installation flange dish (4) about hydraulic control valve body (1), installation flange dish (4) right-hand member face is provided with seal assembly (5), and seal assembly (5) are used for sealing installation flange dish (4), installation flange dish (4) inside is provided with extrusion subassembly (3) that are used for improving seal assembly (5) leakproofness.

2. The leak-proof pressure-resistant pilot operated valve of claim 1, wherein: seal assembly (5) are including sealing washer (51), extrusion spring (53), seal chamber (54) and pushing ring (55), seal chamber (54) have been seted up to mounting flange dish (4) right-hand member face, seal chamber (54) inside right side inlays and is equipped with sealing washer (51), seal chamber (54) inside inlays and is equipped with pushing ring (55), pushing ring (55) left end face is provided with extrusion spring (53).

3. The leak-proof pressure-resistant pilot operated valve of claim 2, wherein: the extrusion assembly (3) comprises an adjusting rod (32), an anti-falling cover (33), an extrusion block (34), a limiting cavity (35) and a compression ring (37), wherein the limiting cavity (35) is formed in the upper side of the inside of the mounting flange plate (4), the adjusting rod (32) is arranged in the limiting cavity (35), the extrusion block (34) is arranged at the lower end of the adjusting rod (32), the anti-falling cover (33) is arranged on the upper end face of the extrusion block (34), and the compression ring (37) is attached to the right side of the lower end face of the extrusion block (34).

4. A leak-proof pressure-resistant pilot operated valve as set forth in claim 3 wherein: the pushing ring (55) is provided with a first inner sealing gasket (52) on the right end face, and the pressing ring (37) is provided with a second inner sealing gasket (56) on the right end face.

5. The leak-proof pressure-resistant pilot operated valve of claim 4, wherein: the first inner sealing gasket (52) and the second inner sealing gasket (56) are annular, and the first inner sealing gasket (52) and the second inner sealing gasket (56) are made of ethylene propylene rubber.

6. A leak-proof pressure-resistant pilot operated valve as set forth in claim 3 wherein: through holes (36) are formed in the upper side and the lower side of the annular side face of the mounting flange plate (4), a follow-up block (321) is arranged at the bottom of the adjusting rod (32), and a rotating cap (31) is arranged on the upper end face of the adjusting rod (32).

7. The leak-proof pressure-resistant pilot operated valve of claim 6, wherein: the inside internal thread that is provided with of through-hole (36), adjust pole (32) annular side and be provided with the external screw thread, and external screw thread and internal screw thread mesh, through-hole (36) are offered respectively symmetry in mounting flange (4) annular side upper and lower both sides and front and back both sides, change cap (31) shape and be the hexagon.

8. A leak-proof pressure-resistant pilot operated valve as set forth in claim 3 wherein: the sealing cavity (54) is communicated with the limiting cavity (35), and the extrusion springs (53) are symmetrically arranged on the upper side, the lower side, the front side and the rear side of the inside of the sealing cavity (54) respectively.

9. The leak-proof pressure-resistant pilot operated valve of claim 1, wherein: mounting holes (41) are symmetrically formed in the front side and the rear side of the inside of the mounting flange plate (4).