Safety-level electric ball valve

Abstract

The utility model discloses a safety-level electric ball valve, relates to the technical field of electric ball valves, and aims to provide a safety-level electric ball valve which can balance pressure on two sides of a sealing ring and prevent the sealing ring from being deformed and damaged due to long-term stress. The utility model discloses a ball valve which comprises a valve body, the two ends of the valve body are provided with screwed joints, rubber pads are arranged in the screwed joints, a rotating cavity is formed in the valve body, and a ball body is rotatably arranged in the rotating cavity. The ball valve has the technical effects that by arranging a pneumatic tube, when the valve body needs to be closed, an electric component drives the ball body to rotate in the rotating cavity, so that a through hole of the ball body is staggered from the valve body; at the moment, the material pressure in the valve body extrudes the sealing ring, meanwhile, the air pressure pipe injects compressed air into the rotating cavity, the compressed air supports the sealing ring from the interior, the pressure on the two sides of the sealing ring is balanced, and the problem that the sealing ring is stressed in one direction, and consequently the sealing ring is prone to deformation and damage due to unbalanced stress is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric ball valves, in particular to a safety-grade electric ball valve. Background Art

[0002] Electric ball valve is an important actuator in industrial automation control system. Electric ball valve is a valve that rotates around the axis of valve stem according to the movement of valve disc. Existing ball valves use ball and side sealing ring to close the pipeline after closing. However, when the material pressure in the pipeline is high, the sealing ring will be subjected to strong extrusion force, which will damage the sealing ring in the long run and cause the seal to fail. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides a safety-grade electric ball valve which can balance the pressure on both sides of a sealing ring and prevent the sealing ring from being deformed and damaged by long-term stress.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety-grade electric ball valve, comprising a valve body, an electric component is provided on the valve body, threaded joints are provided at both ends of the valve body, and rubber pads are provided in the threaded joints, a rotating chamber is provided in the valve body, a ball is rotatably provided in the rotating chamber, a through hole is provided in the ball, a valve stem connected to the electric component is provided on the ball, a sealing ring is provided at a position in the valve body that fits the ball, and an air pressure tube is provided on the side of the valve body corresponding to the position of the rotating chamber, and the air pressure tube is used to transport compressed air into the rotating chamber.

[0007] Preferably, a pressure detector is provided on the valve body near the sealing ring, and the pressure detector is used to detect the water pressure at the water inlet end of the ball.

[0008] Preferably, a pressure gauge is provided on the air pressure tube, and the pressure gauge is used to detect the air pressure in the rotating chamber.

[0009] Preferably, an exhaust valve is provided on the valve body at a position located at the water outlet end of the ball, and the exhaust valve is used to exhaust the air in the valve body.

[0010] Preferably, a filter component is provided in the valve body near the water inlet end, and the filter component is used to filter impurities entering the sphere.

[0011] Preferably, the filter component comprises a filter cartridge and a threaded component, the filter cartridge is inserted into the valve body, the threaded component is fitted with the top end of the filter cartridge and is threadedly connected to the valve body.

[0012] Preferably, a large filter hole is provided on the water inlet side of the filter cartridge, and a small filter hole is provided on the water outlet side of the filter cartridge.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a safety-grade electric ball valve, which has the following beneficial effects:

[0015] 1. By setting up an air pressure pipe, when the valve body needs to be closed, the electric component drives the ball to rotate in the rotating chamber, so that the through hole of the ball is misaligned with the valve body. At this time, the material pressure in the valve body will squeeze the sealing ring, so that the sealing ring and the ball fit together. At the same time, the air pressure pipe injects compressed air into the rotating chamber. The compressed air supports the sealing ring from the inside, so that the pressure on both sides of the sealing ring is balanced, avoiding the problem of unidirectional force on the sealing ring, which leads to imbalanced force and easy deformation and damage.

[0016] 2. By setting up a pressure detector and an exhaust valve, the pressure detector can detect the pressure in the valve body after the ball is closed. According to the measured pressure value, the air pressure pipe can be used to inject appropriate air pressure into the rotating chamber so that the pressure on both sides of the sealing ring can be balanced. The exhaust valve can discharge the air in the rotating chamber after the ball is opened to avoid the injected balanced air pressure from mixing with the material and affecting the normal transportation of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 It is a three-dimensional schematic diagram of the valve body of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross section of the valve body of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross section of the filter cartridge of the present utility model.

[0021] In the figure: 1. valve body; 2. pressure detector; 3. exhaust valve; 4. threaded joint; 5. filter component; 501. filter cartridge; 502. threaded part; 503. large filter hole; 504. small filter hole; 6. air pressure tube; 7. pressure gauge; 8. electric component; 9. sealing ring; 10. ball; 11. rotating chamber. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 A safety-grade electric ball valve comprises a valve body 1, an electric component 8 is arranged on the valve body 1, threaded joints 4 are arranged at both ends of the valve body 1, and rubber pads are arranged in the threaded joints 4, a rotating chamber 11 is provided in the valve body 1, a ball 10 is rotatably arranged in the rotating chamber 11, a through hole is arranged in the ball 10, a valve stem connected to the electric component 8 is arranged on the ball 10, a sealing ring 9 is arranged at a position of the ball 10 in the valve body 1, and an air pressure pipe 6 is arranged at a position of the rotating chamber 11 on the side of the valve body 1, and the air pressure pipe 6 is used to transport compressed air into the rotating chamber 11;

[0024] In the utility model, an air pressure tube 6 is provided, by which compressed air can be injected into the rotating chamber 11, and the compressed air is used to support the inner side of the sealing ring 9 and balance the pressure with the outer side of the sealing ring 9, so that the sealing ring 9 is evenly stressed, and the deformation and damage caused by the unbalanced force on the sealing ring 9 can be effectively prevented.

[0025] A pressure detector 2 is provided on the valve body 1 near the sealing ring 9, and the pressure detector 2 is used to detect the water pressure at the water inlet end of the ball 10;

[0026] By setting up the pressure detector 2, the pressure in the valve body 1 can be quickly detected by the pressure detector 2, so that the air pressure tube 6 can be injected with corresponding pressure, so that the pressure on both sides of the sealing ring 9 can be accurately balanced, thereby achieving the effect of protecting the sealing ring 9.

[0027] The air pressure tube 6 is provided with an air pressure gauge 7, and the air pressure gauge 7 is used to detect the air pressure in the rotating chamber 11;

[0028] By setting the barometer 7, the barometer 7 can detect the pressure in the rotating chamber 11, so as to achieve the purpose of controlling the balance air pressure, so that the balance air pressure can be accurately controlled.

[0029] An exhaust valve 3 is provided on the valve body 1 at the water outlet end of the ball 10, and the exhaust valve 3 is used to exhaust the air in the valve body 1;

[0030] By setting the exhaust valve 3, the exhaust valve 3 can discharge the gas in the valve body 1, so as to avoid the mixing of the balanced air pressure and the material after the valve body 1 is opened, resulting in the ineffective transportation of the material.

[0031] A filter component 5 is provided near the water inlet end of the valve body 1. The filter component 5 is used to filter impurities entering the spherical body 10. The filter component 5 includes a filter cartridge 501 and a threaded member 502. The filter cartridge 501 is inserted into the valve body 1. The threaded member 502 fits the top of the filter cartridge 501 and is threadedly connected to the valve body 1. A large filter hole 503 is provided on the water inlet side of the filter cartridge 501, and a small filter hole 504 is provided on the water outlet side of the filter cartridge 501.

[0032] By setting up the filter cartridge 501, when the material flows in the valve body 1, it will pass through the filter cartridge 501, and the impurities mixed in the material will enter the filter cartridge 501 through the large filter hole 503, and then the material will pass through the small filter hole 504, and the impurities will be blocked in the filter cartridge 501. In this way, the effect of filtering the material is achieved, avoiding the impurities in the material from contacting the sphere 10 and causing the problem of wear of the sphere 10.

[0033] Working principle:

[0034] The material enters the valve body 1, is first filtered by the filter cartridge 501, then passes through the through hole in the ball 10, and finally passes through the valve body 1. When the valve body 1 is closed, the electric component 8 drives the ball 10 to rotate 90 degrees, so that it closes the valve body 1. At the same time, the air pressure pipe 6 delivers compressed air to the rotating chamber 11, and uses the compressed air to balance the pressure on both sides of the sealing ring 9, so as to prevent the sealing ring 9 from being deformed and damaged by unbalanced force.

[0035] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A safety-grade electric ball valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with an electric component (8), threaded joints (4) are provided at both ends of the valve body (1), and rubber pads are provided in the threaded joints (4), a rotating chamber (11) is provided in the valve body (1), a ball (10) is rotatably provided in the rotating chamber (11), a through hole is provided in the ball (10), a valve stem connected to the electric component (8) is provided on the ball (10), a sealing ring (9) is provided at a position in the valve body (1) that fits the ball (10), and a pneumatic tube (6) is provided on the side of the valve body (1) at a position corresponding to the rotating chamber (11), and the pneumatic tube (6) is used to transport compressed air into the rotating chamber (11).

2. The safety-grade electric ball valve according to claim 1, characterized in that: A pressure detector (2) is provided on the valve body (1) near the sealing ring (9), and the pressure detector (2) is used to detect the water pressure at the water inlet end of the ball (10).

3. The safety-grade electric ball valve according to claim 1, characterized in that: The air pressure tube (6) is provided with an air pressure gauge (7), and the air pressure gauge (7) is used to detect the air pressure in the rotating chamber (11).

4. The safety-grade electric ball valve according to claim 1, characterized in that: An exhaust valve (3) is provided on the valve body (1) at a position located at the water outlet end of the ball (10), and the exhaust valve (3) is used to exhaust the air in the valve body (1).

5. The safety-grade electric ball valve according to claim 1, characterized in that: A filter component (5) is provided in the valve body (1) at a position close to the water inlet end, and the filter component (5) is used to filter impurities entering the sphere (10).

6. The safety-grade electric ball valve according to claim 5, characterized in that: The filter component (5) comprises a filter cartridge (501) and a threaded member (502); the filter cartridge (501) is inserted into the valve body (1); the threaded member (502) fits the top end of the filter cartridge (501) and is threadedly connected to the valve body (1).

7. The safety-grade electric ball valve according to claim 6, characterized in that: The water inlet side of the filter cartridge (501) is provided with a large filter hole (503), and the water outlet side of the filter cartridge (501) is provided with a small filter hole (504).

Images