Valve seat sealing structure of storage tank stop valve

Abstract

The utility model discloses a valve seat sealing structure of a storage tank stop valve, and relates to the technical field of valve seat sealing structures, in particular to the valve seat sealing structure of the storage tank stop valve, which comprises a valve seat body, mounting grooves are arranged on two sides of the valve seat body, and sealing ring bodies are abutted against the interiors of the mounting grooves. A plurality of sealing rings are arranged on the outer surface of the sealing ring body, the sealing rings are distributed in the sealing ring body from inside to outside in a small-to-large mode, a connecting through groove is formed in the valve seat body, a connecting column is slidably connected into the connecting through groove, and the connecting column is arranged on the face, away from the sealing rings, of the sealing ring body. According to the valve seat sealing structure of the storage tank stop valve, through the cooperative arrangement of the multiple sets of sealing rings, the sealing ring cavity structures and the exhaust holes, the valve seat sealing structure of the storage tank stop valve has the effects that multiple sealing defense lines are formed when the valve seat is connected with a pipeline, the sealing performance is enhanced, and the effects that double-layer sealing is achieved, and the sealing performance is improved are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of valve seat sealing structure, specifically a valve seat sealing structure for a storage tank shut-off valve. Background Technology

[0002] A shut-off valve is an actuator in an automation system, consisting of a multi-spring pneumatic diaphragm actuator or a floating piston actuator and a regulating valve. It receives signals from regulating instruments to control the shut-off, connection, or switching of fluids within process pipelines. It features simple structure, sensitive response, and reliable operation. It is widely used in petroleum, chemical, and metallurgical industries. Pneumatic shut-off valves require filtered compressed air as their air source, and the medium flowing through the valve body should be a liquid or gas free of impurities and particles. Depending on the allowable differential pressure, medium characteristics, and process pipeline requirements, single-seat, sleeve, and three-way shut-off valves can be selected. Tank shut-off valves are typically installed on the inlet and outlet pipelines of storage tanks. They activate when an accident occurs in the tank area (fire, pipeline leak, etc.) or the tank level exceeds the high level to prevent the escalation of the accident or material overflow. Under normal operating conditions, it remains open; in the event of an accident, the valve is activated and quickly closed to ensure the safe operation of the storage tank.

[0003] The existing valve seat sealing structure of the shut-off valve is relatively simple, which is prone to sealing failure during long-term use, affecting the user experience of the shut-off valve. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a valve seat sealing structure for a storage tank shut-off valve, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a valve seat sealing structure for a tank shut-off valve, comprising a valve seat body, mounting grooves on both sides of the valve seat body, a sealing ring body abutting inside the mounting grooves, a sealing ring on the outer surface of the sealing ring body, and several sealing rings distributed inside the sealing ring body in an increasing order from the inside to the outside, a connecting groove inside the valve seat body, a connecting post slidably connected inside the connecting groove, and the connecting post being located on the side of the sealing ring body away from the sealing ring.

[0008] Optionally, the sealing ring body has a cavity structure, and an exhaust hole is provided on the inner wall of the sealing ring body. The exhaust hole communicates with the cavity, and reinforcing ribs are provided inside the sealing ring body.

[0009] Optionally, the sealing ring body, sealing ring, and reinforcing rib are all made of rubber material.

[0010] Optionally, the diameter of the connecting post is adapted to the inner diameter of the connecting groove.

[0011] Optionally, the number of connecting through holes is several, evenly distributed inside the valve seat body.

[0012] Optionally, the number of vent holes is several, evenly distributed inside the sealing ring body.

[0013] This utility model provides a valve seat sealing structure for a storage tank shut-off valve, which has the following beneficial effects:

[0014] 1. The valve seat sealing structure of this tank shut-off valve, through the coordinated arrangement of multiple sets of sealing rings, enables the valve seat sealing structure of this tank shut-off valve to form multiple sealing defenses when the valve seat is connected to the pipeline, thereby enhancing the sealing performance.

[0015] 2. The valve seat sealing structure of this tank shut-off valve, through the coordinated arrangement of the connecting groove, connecting column and sealing ring, enables the valve seat sealing structure of this tank shut-off valve to have a highly efficient sealing effect.

[0016] 3. The valve seat sealing structure of this tank shut-off valve, through the combination of the sealing ring cavity structure and the vent hole, enables the valve seat sealing structure of this tank shut-off valve to have a double-layer seal, thereby improving the sealing performance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the left side of the sealing ring body of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the right side of the sealing ring body of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the sealing ring body of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the valve seat body of this utility model;

[0022] Figure 6 This is a schematic diagram of the internal structure of the valve seat body of this utility model.

[0023] In the diagram: 1. Valve seat body; 2. Sealing ring body; 3. Sealing ring; 4. Connecting groove; 5. Connecting column; 6. Vent hole; 7. Reinforcing rib. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example

[0026] Please see Figures 1 to 6 The present invention provides a technical solution: a valve seat sealing structure for a tank shut-off valve, comprising a valve seat body 1, mounting grooves on both sides of the valve seat body 1, a sealing ring body 2 abutting inside the mounting grooves, a sealing ring 3 on the outer surface of the sealing ring body 2, and a plurality of sealing rings 3 distributed in an increasing order from the inside to the outside within the sealing ring body 2, a connecting groove 4 inside the valve seat body 1, a connecting post 5 slidably connected inside the connecting groove 4, and the connecting post 5 being disposed on the side of the sealing ring body 2 away from the sealing ring 3.

[0027] Specifically, when the valve seat is connected to the corresponding connecting pipe, multiple sets of sealing rings 3 are squeezed at the same time, forming multiple sealing defenses, which greatly enhances the sealing performance of the sealing structure. At the same time, after the valve body is connected, the medium inside the valve body flows through the connecting groove 4 to the connecting column 5 and the sealing ring body 2, increasing the pressure between the sealing ring and the corresponding connecting pipe, making the sealing ring closer to the connection point and improving the sealing performance.

[0028] Please see Figure 4 The sealing ring body 2 has a cavity structure. The inner wall of the sealing ring body 2 is provided with an exhaust hole 6, which is connected to the cavity. The sealing ring body 2 is provided with a reinforcing rib 7 inside.

[0029] Specifically, when the valve seat is connected to the corresponding connecting pipe, the sealing ring is squeezed, and the gas in the sealing ring body 2 is discharged from the exhaust hole 6, so that the upper and lower surfaces of the sealing ring are pressed together to achieve double sealing and improve the sealing effect.

[0030] Please see Figure 1 The sealing ring body 2, the sealing ring 3, and the reinforcing rib 7 are all made of rubber material.

[0031] Specifically, rubber has high elasticity, allowing it to undergo significant deformation under relatively small external forces and quickly return to its original shape after the force is removed. This characteristic enables the sealing ring to fit tightly against the unevenness of the sealing surface, filling microscopic gaps and forming a reliable sealing barrier.

[0032] Please see Figure 2 , Figure 5 The diameter of the connecting column 5 is compatible with the inner diameter of the connecting groove 4.

[0033] Specifically, the matching arrangement of the connecting column 5 and the connecting groove 4 improves the stability of the sealing ring installation.

[0034] Please see Figure 5-6 The number of connecting through holes is several, and they are evenly distributed inside the valve seat body 1.

[0035] Specifically, the combination of multiple sets of connecting through holes allows the medium inside the valve body to be evenly applied to the outer surface of the sealing ring.

[0036] Please see Figure 4 There are several vent holes 6, which are evenly distributed inside the sealing ring body 2.

[0037] Specifically, the multiple sets of vent holes 6 can quickly discharge the internal gas of the sealing ring to the outside of the sealing ring.

[0038] During use, when the valve seat body 1 is connected to the corresponding connecting pipe, multiple sets of sealing rings 3 are simultaneously squeezed, forming multiple sealing defenses, which greatly enhances the sealing performance of the sealing structure. When the valve seat body 1 is connected to the corresponding connecting pipe, the sealing ring body 1 is squeezed, which discharges the gas in the sealing ring body 2 from the exhaust hole 6, making the upper and lower surfaces of the sealing ring body 1 fit together tightly, achieving double-layer sealing and improving the sealing effect. At the same time, after the valve body is connected, the medium passing through the valve body flows through the connecting groove 4 to the connecting column 5 and the sealing ring body 2, increasing the pressure between the sealing ring and the corresponding connecting pipe, making the sealing ring fit closer to the connection point and improving the sealing performance.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A valve seat sealing structure for a storage tank shut-off valve, comprising a valve seat body, characterized in that: The valve seat body has mounting grooves on both sides, and the sealing ring body is abutted inside the mounting groove. A sealing ring is provided on the outer surface of the sealing ring body. There are several sealing rings, which are distributed inside the sealing ring body in an increasing manner from the inside to the outside. A connecting groove is provided inside the valve seat body, and a connecting post is slidably connected inside the connecting groove. The connecting post is located on the side of the sealing ring body away from the sealing ring.

2. The valve seat sealing structure of a storage tank shut-off valve according to claim 1, characterized in that: The sealing ring body has a hollow structure, and an exhaust hole is provided on the inner wall of the sealing ring body. The exhaust hole is connected to the cavity, and reinforcing ribs are provided inside the sealing ring body.

3. The valve seat sealing structure of a storage tank shut-off valve according to claim 1, characterized in that: The sealing ring body, sealing ring, and reinforcing ribs are all made of rubber material.

4. The valve seat sealing structure of a storage tank shut-off valve according to claim 1, characterized in that: The diameter of the connecting column is matched with the inner diameter of the connecting groove.

5. The valve seat sealing structure of a storage tank shut-off valve according to claim 1, characterized in that: The number of connecting slots is several, and they are evenly distributed inside the valve seat body.

6. The valve seat sealing structure of a storage tank shut-off valve according to claim 2, characterized in that: The number of vent holes is several, and they are evenly distributed inside the sealing ring body.

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