A pneumatic O-type cut-off valve with positioning function

Abstract

The utility model relates to cutout valve technical field, and disclose a kind of positioning function's pneumatic O type cutout valve, including two shell mechanisms, two shell mechanisms outside are fixedly installed with protection mechanism, two shell mechanisms are rotatably connected with ball valve body between, two shell mechanism upper end is fixedly installed with No. 1 shell, the transmission rod is fixedly installed on the ball valve body upper end surface, the pneumatic actuator is fixedly installed on No. 1 shell upper end surface. By connecting block, sealing mechanism is installed in shell mechanism interior, and the elasticity of compression spring is used to make sealing ring closely adhere ball valve body, to complete the sealing inside valve body, after long time use leading to sealing ring abrasion of pneumatic O type cutout valve, compression spring will push limit block, to make remaining sealing ring can again closely adhere ball valve body, and then to keep the normal use of pneumatic O type cutout valve, to this can effectively increase the service life of valve body.

Description

Technical Field

[0001] This utility model relates to the field of shut-off valve technology, specifically a pneumatic O-type shut-off valve with positioning function. Background Technology

[0002] Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. Ball valves are an important type of valve, widely used in petrochemicals, long-distance pipelines, and other fields. The closing element of a ball valve is a perforated ball that rotates with the valve stem to open or close the valve. Electric O-type shut-off valves are rotary ball valves with a 90° rotation angle. They offer excellent sealing performance, large flow capacity, low flow resistance coefficient, simple structure, convenient maintenance, and long service life, and are widely used in petroleum, chemical, metallurgical, light industry, papermaking, power plants, refrigeration, and other fields.

[0003] In existing pneumatic O-ring shut-off valves, the sealing rings are mostly fixed inside the valve body. After prolonged use, the continuous friction between the ball valve body and the sealing rings causes wear on the sealing rings, leading to leakage and damage to the pneumatic O-ring shut-off valve. In addition, most existing pneumatic O-ring shut-off valves lack external protective mechanisms, making them susceptible to damage from impacts during use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pneumatic O-ring shut-off valve with positioning function, which has the advantages of long service life and is not easily damaged, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a pneumatic O-type shut-off valve with positioning function, comprising two outer shell mechanisms, each with a protective mechanism fixedly installed on its outer side, a ball valve body rotatably connected between the two outer shell mechanisms, a first outer shell fixedly installed on the upper end of each of the two outer shell mechanisms, a transmission rod fixedly installed on the upper surface of the ball valve body, a pneumatic actuator fixedly installed on the upper surface of the first outer shell, an electric valve positioner fixedly installed on the upper surface of the pneumatic actuator, a signal box fixedly installed on the upper surface of the electric valve positioner, and a sealing mechanism fixedly installed inside each of the two outer shell mechanisms.

[0006] As a preferred embodiment of this utility model, multiple fixing bolts are fixedly installed between the two outer shell mechanisms, and a nut is threaded onto one side of each of the multiple fixing bolts.

[0007] As a preferred embodiment of the present invention, the outer shell mechanism includes a connecting pipe, a second connecting flange is fixedly installed on one side of the connecting pipe, a valve body shell is fixedly installed on the other side of the connecting pipe, and a first connecting flange is fixedly installed on the surface of the valve body shell.

[0008] As a preferred embodiment of the present invention, the protection mechanism includes a device housing, an insulation block is fixedly installed inside the device housing, and an elastic block is fixedly installed on the outside of the device housing.

[0009] As a preferred embodiment of the present invention, the sealing mechanism includes a connecting block, a connecting shell is fixedly installed on one side of the connecting block, and a plurality of compression springs are fixedly installed inside the connecting shell.

[0010] As a preferred embodiment of this utility model, a limiting block is fixedly installed on one side of the plurality of compression springs, and a sealing ring is fixedly installed on one side of the limiting block.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This pneumatic O-ring shut-off valve with positioning function has its sealing mechanism installed inside the outer shell via a connecting block. The sealing ring is pressed tightly against the ball valve body by the elastic force of the compression spring, thus completing the internal sealing of the valve body. After the sealing ring wears down due to prolonged use of the pneumatic O-ring shut-off valve, the compression spring will push the limit block, allowing the remaining sealing ring to press tightly against the ball valve body again, thereby maintaining the normal operation of the pneumatic O-ring shut-off valve and effectively increasing the service life of the valve body.

[0012] 2. This pneumatic O-type shut-off valve with positioning function has a protective mechanism installed on the outside of the connecting pipe. The valve body is kept warm by an insulation block made of rock wool to prevent the sealing ring from being damaged due to excessive temperature, which in turn leads to valve body damage. An elastic block made of elastic rubber is set on the outermost side of the mechanism. When the connecting pipe is hit, the elastic block will deform to absorb the impact force, thereby preventing damage to the connecting pipe. Attached Figure Description

[0013] Figure 1 This is an isometric schematic diagram of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a cross-sectional schematic diagram of the outer shell mechanism of this utility model; Figure 4 This is a cross-sectional schematic diagram of the protection mechanism of this utility model; Figure 5 This is a cross-sectional schematic diagram of the sealing mechanism of this utility model.

[0014] In the diagram: 1. Outer shell mechanism; 2. Protective mechanism; 3. Nut; 4. Fixing bolt; 5. Sealing mechanism; 6. Outer shell No. 1; 7. Pneumatic actuator; 8. Transmission rod; 9. Ball valve body; 101. Valve body outer shell; 102. Connecting flange No. 1; 103. Connecting pipe; 104. Connecting flange No. 2; 201. Device outer shell; 202. Insulation block; 203. Elastic block; 501. Connecting block; 502. Compression spring; 503. Connecting shell; 504. Limiting block; 505. Sealing ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5 A pneumatic O-type shut-off valve with positioning function includes two outer shell mechanisms 1. A protective mechanism 2 is fixedly installed on the outside of each of the two outer shell mechanisms 1. A ball valve body 9 is rotatably connected between the two outer shell mechanisms 1. A first outer shell 6 is fixedly installed on the upper end of each of the two outer shell mechanisms 1. A transmission rod 8 is fixedly installed on the upper end face of the ball valve body 9. A pneumatic actuator 7 is fixedly installed on the upper end face of the first outer shell 6. A sealing mechanism 5 is fixedly installed inside each of the two outer shell mechanisms 1. Multiple fixing bolts 4 are fixedly installed between the two outer shell mechanisms 1. Nuts 3 are threadedly connected to one side of each of the multiple fixing bolts 4. In the above structure, two outer shell mechanisms 1 are connected by fixing bolts 4 and nuts 3, and the ball valve body 9 is installed between the two outer shell mechanisms 1 to form the valve body body. The valve body is quickly opened and closed by the pneumatic actuator 7 driving the transmission rod 8 to rotate. The protection mechanism 2 is used to protect the outer shell mechanism 1 to prevent the outer shell mechanism 1 from being damaged by bumps. The sealing mechanism 5 is in close contact with the ball valve body 9 on one side, so that the internal space of the valve body can be sealed when the valve body is closed to prevent the leakage of the medium inside the pipeline.

[0017] In a preferred embodiment, the outer casing mechanism 1 includes a connecting pipe 103, a second connecting flange 104 is fixedly installed on one side of the connecting pipe 103, a valve body outer casing 101 is fixedly installed on the other side of the connecting pipe 103, and a first connecting flange 102 is fixedly installed on the surface of the valve body outer casing 101. In the above structure, the outer shell mechanism 1 is connected through the first connecting flange 102, and the valve body body is formed by the valve body shell 101 enclosing the ball valve body 9. The second connecting flange 104 is used to connect the valve body and the external pipeline.

[0018] In a preferred embodiment, the protection mechanism 2 includes a device housing 201, an insulation block 202 is fixedly installed inside the device housing 201, and an elastic block 203 is fixedly installed on the outside of the device housing 201. In the above structure, the insulation block 202 is made of rock wool and the elastic block 203 is made of elastic rubber. The insulation block 202 ensures the stability of the internal temperature of the valve body, thereby avoiding damage to the valve body caused by excessively high or low internal temperature. When the valve body is impacted, the elastic block 203 will deform to absorb the impact, thereby preventing the valve body from being damaged by impact.

[0019] In a preferred embodiment, the sealing mechanism 5 includes a connecting block 501, a connecting shell 503 is fixedly installed on one side of the connecting block 501, a plurality of compression springs 502 are fixedly installed inside the connecting shell 503, a limiting block 504 is fixedly installed on one side of the plurality of compression springs 502, and a sealing ring 505 is fixedly installed on one side of the limiting block 504. In the above structure, the sealing mechanism 5 is installed and fixed inside the outer shell mechanism 1 by the connecting block 501. Under the action of the compression spring 502, the sealing ring 505 will be tightly attached to the surface of the ball valve body 9, so that the internal space of the valve body can be sealed when the valve body is closed, preventing the leakage of the medium in the pipeline. After the sealing ring 505 is worn due to long-term use of the valve body, the compression spring 502 will push the limit block 504, so that the remaining sealing ring 505 can be tightly attached to the surface of the ball valve body 9 again, thereby ensuring the normal use of the valve body.

[0020] Working principle: Two No. 1 connecting flanges 102 are connected by fixing bolts 4 and nuts 3, thereby connecting and fixing the two outer shell mechanisms 1. The ball valve body 9 is installed between the two outer shell mechanisms 1 to form the valve body body. The protection mechanism 2 is installed on the surface of the outer shell mechanism 1. The heat insulation block 202 is made of rock wool, and the elastic block 203 is made of elastic rubber. The heat insulation block 202 ensures the stability of the internal temperature of the valve body, thereby avoiding damage to the valve body due to excessively high or low internal temperature. When the valve body is impacted, the elastic block 203 will deform to absorb the impact, thereby preventing the valve body from being damaged. Damaged by impact, the sealing mechanism 5 is installed and fixed inside the outer shell mechanism 1 by the connecting block 501. Under the action of the compression spring 502, the sealing ring 505 will be tightly attached to the surface of the ball valve body 9, so that the internal space of the valve body can be sealed when the valve body is closed, preventing the leakage of the medium in the pipeline. After the sealing ring 505 is worn due to long-term use of the valve body, the compression spring 502 will push the limit block 504, so that the remaining sealing ring 505 can be tightly attached to the surface of the ball valve body 9 again, thereby ensuring the normal use of the valve body. The valve body is quickly opened and closed by using the pneumatic actuator 7 to drive the transmission rod 8 to rotate.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic O-ring shut-off valve with positioning function, comprising two housing mechanisms (1), characterized in that: A protective mechanism (2) is fixedly installed on the outside of each of the two outer shell mechanisms (1). A ball valve body (9) is rotatably connected between the two outer shell mechanisms (1). A first outer shell (6) is fixedly installed on the upper end of each of the two outer shell mechanisms (1). A transmission rod (8) is fixedly installed on the upper end face of the ball valve body (9). A pneumatic actuator (7) is fixedly installed on the upper end face of the first outer shell (6). A sealing mechanism (5) is fixedly installed inside each of the two outer shell mechanisms (1).

2. A pneumatic O-ring shut-off valve with positioning function according to claim 1, characterized in that: Multiple fixing bolts (4) are fixedly installed between the two outer shell mechanisms (1), and nuts (3) are threadedly connected to one side of each of the multiple fixing bolts (4).

3. A pneumatic O-ring shut-off valve with positioning function according to claim 1, characterized in that: The outer casing mechanism (1) includes a connecting pipe (103), a second connecting flange (104) is fixedly installed on one side of the connecting pipe (103), a valve body casing (101) is fixedly installed on the other side of the connecting pipe (103), and a first connecting flange (102) is fixedly installed on the surface of the valve body casing (101).

4. A pneumatic O-ring shut-off valve with positioning function according to claim 1, characterized in that: The protection mechanism (2) includes a device housing (201), an insulation block (202) is fixedly installed inside the device housing (201), and an elastic block (203) is fixedly installed on the outside of the device housing (201).

5. A pneumatic O-ring shut-off valve with positioning function according to claim 1, characterized in that: The sealing mechanism (5) includes a connecting block (501), a connecting shell (503) is fixedly installed on one side of the connecting block (501), and a plurality of compression springs (502) are fixedly installed inside the connecting shell (503).

6. A pneumatic O-ring shut-off valve with positioning function according to claim 5, characterized in that: A limiting block (504) is fixedly installed on one side of each of the compression springs (502), and a sealing ring (505) is fixedly installed on one side of the limiting block (504).

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