Anti-falling valve seat structure

Abstract

The utility model relates to the technical field of valve seats, in particular to an anti-disengaging valve seat structure. The anti-disengagement valve seat structure comprises a valve seat, an arc-shaped cavity matched with a valve ball is formed in the valve seat, a ball connecting assembly is installed in the valve seat and comprises a rubber ring, the rubber ring is installed in an inner ring groove formed in the inner cavity wall of the valve seat, an annular abutting rubber sheet is fixedly embedded in the inner ring face of the rubber ring, and the annular abutting rubber sheet is fixedly connected with the inner ring face of the rubber ring. The end face, corresponding to the valve ball, of the annular abutting rubber sheet is provided with an arc-shaped part. According to the anti-disengaging valve seat structure, the arc-shaped portion of the annular abutting rubber sheet is attached to the valve ball, elastic deformation of the protruding abutting portion is matched, the anti-disengaging valve seat structure can adapt to vibration of the valve ball to eliminate hidden danger of leakage, the elastic rubber rings at the front end and the rear end of the rubber ring enable the rubber ring to be clamped in the inner annular groove through elastic deformation, and therefore the anti-disengaging valve seat structure is simple in structure and convenient to use. And the ball connecting assembly can be taken out only by pulling outwards during disassembly, so that the maintenance process is greatly simplified.

Description

A valve seat structure for preventing detachment Technical Field

[0001] This utility model relates to the field of valve seat technology, and in particular to an anti-detachment valve seat structure. Background Technology

[0002] In the field of valve seat technology, traditional valve seat structures often employ rigid connections or single sealing components, which present the following problems:

[0003] 1. Insufficient sealing between the valve seat and the valve ball, especially under high pressure or frequent vibration conditions, can easily lead to leakage;

[0004] 2. The installation of the ball joint assembly is complicated, and maintenance and replacement require disassembly of the entire structure, which is time-consuming and labor-intensive.

[0005] Therefore, it is necessary to provide a new anti-detachment valve seat structure to solve the above-mentioned technical problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, this utility model provides an anti-detachment valve seat structure.

[0007] The anti-detachment valve seat structure provided by this utility model includes a valve seat, wherein an arc-shaped cavity matching the valve ball is opened in the valve seat, and a ball assembly is installed in the valve seat;

[0008] The ball assembly includes a rubber ring, which is installed in an inner annular groove in the inner wall of the valve seat. An annular abutment rubber sheet is fixedly fitted on the inner annular surface of the rubber ring. The end face of the annular abutment rubber sheet corresponding to the valve ball is provided with an arc-shaped part, which is in contact with the spherical surface of the valve ball.

[0009] Preferably, a raised abutment portion is fixedly fitted at the connection between the annular abutment rubber sheet and the rubber ring, and the raised abutment portion is located at the root of the annular abutment rubber sheet away from the arc-shaped portion, thereby driving the annular abutment rubber sheet to abut against the spherical surface of the valve ball through the raised abutment portion.

[0010] Preferably, the front and rear ends of the rubber ring are both fixedly fitted with elastic rubber rings.

[0011] Preferably, the outer wall of the valve seat has multiple annularly distributed outer ring grooves, and each outer ring groove is fitted with an O-ring.

[0012] Preferably, the valve seat is provided with an anti-disengagement arc step.

[0013] Compared with related technologies, the anti-detachment valve seat structure provided by this utility model has the following beneficial effects:

[0014] This invention uses the arc-shaped part of the annular abutment rubber sheet to fit against the valve ball, and the elastic deformation of the protruding abutment part can adapt to the vibration of the valve ball to eliminate the risk of leakage. The elastic rubber rings at the front and rear ends of the rubber ring allow it to be locked in the inner ring groove through elastic deformation. During disassembly, the ball assembly can be removed by simply pulling it outward, which greatly simplifies the maintenance process. Attached Figure Description

[0015] Figure 1 is a schematic diagram of a preferred embodiment of the anti-detachment valve seat structure provided by this utility model;

[0016] Figure 2 is a schematic cross-sectional view of the structure shown in Figure 1;

[0017] Figure 3 is a cross-sectional view of the valve seat shown in Figure 2;

[0018] Figure 4 is a cross-sectional view of the ball assembly shown in Figure 2.

[0019] The following are the labels in the diagram: 1. Valve seat; 1a. Arc cavity; 1b. Inner ring groove; 1c. Outer ring groove; 2. Ball connection assembly; 21. Rubber ring; 22. Annular abutting rubber sheet; 221. Arc part; 222. Protruding abutting part; 23. Elastic rubber ring; 3. O-ring; 4. Anti-detachment arc step. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0022] Please refer to Figures 1 to 4. An anti-detachment valve seat structure is provided in this embodiment of the present invention. The anti-detachment valve seat structure includes a valve seat 1 and a ball connection assembly 2.

[0023] In the embodiments of this utility model, please refer to Figures 1 to 4. The valve seat 1 has an arc-shaped cavity 1a that matches the valve ball, and the valve seat 1 is equipped with a ball-connecting assembly 2. The ball-connecting assembly 2 includes a rubber ring 21. The front and rear end faces of the rubber ring 21 are fixedly fitted with elastic rubber rings 23. The rubber ring 21 is installed in the inner ring groove 1b opened in the inner wall of the valve seat 1. The inner ring surface of the rubber ring 21 is fixedly fitted with an annular abutting rubber sheet 22. The end face of the annular abutting rubber sheet 22 corresponding to the valve ball is provided with an arc-shaped part 221, which is in contact with the spherical surface of the valve ball.

[0024] The annular abutting rubber sheet 22 is fixedly fitted with a protruding abutting part 222 at the connection between the rubber ring 21 and the annular abutting rubber sheet 22. The protruding abutting part 222 is located at the root of the annular abutting rubber sheet 22 away from the arc-shaped part 221. The annular abutting rubber sheet 22 is driven to abut against the spherical surface of the valve ball by the protruding abutting part 222.

[0025] It should be noted that when installing the rubber ring 21 into the inner ring groove 1b, the arc-shaped part 221 of the annular abutment rubber sheet 22 should be aligned with the direction of the arc-shaped cavity 1a opened in the valve seat 1. Then, the rubber ring 21 is inserted into the inner ring groove 1b. Since the front and rear ends of the rubber ring 21 are provided with elastic rubber rings 23, the elastic rubber rings 23 undergo elastic deformation when the rubber ring 21 is inserted into the inner ring groove 1b, so that the rubber ring 21 can be firmly locked into the inner ring groove 1b opened in the valve seat 1. This makes it easy for the staff to replace the ball joint assembly 2 later. They only need to pull the rubber ring 21 outward to make it slide out of the inner ring groove 1b. Therefore, the installation and disassembly of the ball joint assembly 2 is simple.

[0026] It should also be noted that after the valve seat 1 is installed in the valve body, part of the valve ball is located in the inner arc cavity 1a. At this time, the arc-shaped part 221 on the annular abutment rubber sheet 22 fits against the spherical surface of the valve ball under the action of the protruding abutment part 222, eliminating the hidden danger of leakage at the connection between the valve seat 1 and the valve ball. Since both the annular abutment rubber sheet 22 and the protruding abutment part 222 are made of rubber and have an elastic structure, when the valve ball vibrates slightly, the arc-shaped part 221 on the annular abutment rubber sheet 22 can still fit against the spherical surface through the elastic deformation of the protruding abutment part 222.

[0027] In this application, the arc-shaped part 221 of the annular abutment rubber sheet 22 fits against the valve ball, and the elastic deformation of the protruding abutment part 222 can adapt to the vibration of the valve ball to eliminate the risk of leakage. The elastic rubber rings 23 at the front and rear ends of the rubber ring 21 make it lock in the inner ring groove 1b through elastic deformation. When disassembling, the ball assembly 2 can be removed by simply pulling it outward, which greatly simplifies the maintenance process.

[0028] It is worth noting that in order to solve the problem of easy aging of the annular mating rubber sheet 22 and rubber ring 21 in high temperature or corrosive media, fluororubber or hydrogenated nitrile butadiene rubber (HNBR) is used to replace the rubber material in the ball assembly 2, thereby improving the temperature resistance and chemical corrosion resistance.

[0029] Furthermore, the outer wall of the valve seat 1 is provided with a plurality of annularly distributed outer ring grooves 1c, and each outer ring groove 1c is fitted with an O-ring 3. The designed O-ring 3 improves the sealing effect of the connection between the valve seat 1 and the valve body.

[0030] Furthermore, the valve seat 1 is provided with an anti-disengagement arc step 4. The valve seat 1 uses the anti-disengagement arc step 4 to abut against the annular protrusion in the valve body, thus preventing the valve ball from driving the valve seat 1 to be squeezed out during rotation.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A valve seat anti-detachment structure, characterized in that, The valve includes a valve seat (1), which has an arc-shaped cavity (1a) that matches the valve ball, and a ball-connecting assembly (2) is installed in the valve seat (1). The ball-connecting assembly (2) includes a rubber ring (21), which is installed in an inner ring groove (1b) in the inner wall of the valve seat (1). An annular abutment rubber sheet (22) is fixedly fitted on the inner ring surface of the rubber ring (21). The end face of the annular abutment rubber sheet (22) corresponding to the valve ball is provided with an arc-shaped part (221), which is in contact with the spherical surface of the valve ball through the arc-shaped part (221).

2. The anti-detachment valve seat structure according to claim 1, characterized in that, The annular abutting rubber sheet (22) is fixedly fitted with a protruding abutting part (222) at the connection between the rubber ring (21), and the protruding abutting part (222) is located at the root of the annular abutting rubber sheet (22) away from the arc-shaped part (221). The protruding abutting part (222) drives the annular abutting rubber sheet (22) to abut against the spherical surface of the valve ball.

3. The anti-detachment valve seat structure according to claim 2, characterized in that, The front and rear ends of the rubber ring (21) are both fixedly fitted with elastic rubber rings (23).

4. The anti-detachment valve seat structure according to claim 1, characterized in that, The outer wall of the valve seat (1) is provided with multiple annularly distributed outer ring grooves (1c).

5. The anti-detachment valve seat structure according to claim 4, characterized in that, Each of the outer ring grooves (1c) is fitted with an O-ring (3).

6. The anti-detachment valve seat structure according to claim 1, characterized in that, The valve seat (1) is provided with an anti-disengagement arc step (4).

Images