Wear-resistant ball valve

Abstract

The utility model discloses a ball valve capable of preventing abrasion, which belongs to the technical field of ball valves and comprises a ball valve seat, the valve seat comprises two sealing rings and balls, the two sealing rings are symmetrically distributed by taking a ball as a center, ball cavities are arranged at one end of each sealing ring close to the ball at intervals, and the ball cavities are communicated with the ball valve seat. The ball is rotatably arranged in the ball cavity; the operation mechanism is arranged on the ball body; according to the ball bearing, the balls and the ball cavities are arranged, the balls making contact with the ball rotate synchronously in the rotating process of the ball, in this way, friction force between the ball and the sealing ring is reduced through mutual rolling between the ball and the balls, and then the service life of the ball is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, and in particular relates to a ball valve capable of preventing wear and tear. Background Art

[0002] A ball valve is a common type of valve. Its main function is to cut off, distribute, and change the flow direction of media in a pipeline system. The characteristic of a ball valve is that the opening and closing part is a sphere, which is driven by the valve stem.

[0003] During use, workers first align the two flanges of the ball valve with the pipe flange, insert the flange gasket, and then secure it with bolts. At the same time, they must ensure that the flow direction arrow on the ball valve is consistent with the flow direction of the fluid in the pipe. The worker rotates the handle 90 degrees clockwise to open the ball and allow the fluid to flow. Rotating the handle 90 degrees counterclockwise closes the ball and cuts off the fluid.

[0004] During use, if a fluid containing solid particles is transported in a pipeline with a ball valve installed for a long time, the particles will cause wear and tear on the valve seat and the ball. In addition, due to the frequent opening and closing of the ball valve, the wear between the ball and the valve seat will also increase. Therefore, a wear-resistant ball valve is needed to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a wear-resistant ball valve to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a wear-resistant ball valve, comprising:

[0007] sphere;

[0008] A valve seat, comprising a sealing ring and a ball, wherein two sealing rings are provided and symmetrically distributed around the sphere, and a ball cavity is provided at one end of the sealing ring close to the sphere, wherein the ball is rotatably disposed in the ball cavity;

[0009] An operating mechanism is provided on the sphere.

[0010] As a preferred solution, the valve seat further includes a filter plate, and the filter plate is arranged at an end of the sealing ring away from the ball cavity.

[0011] As a preferred solution, the valve seat further includes a fixing frame and a roller, the roller is rotatably arranged on the fixing frame, and the circumferential side surface of the roller is in contact with the spherical surface of the sphere.

[0012] As a preferred solution, the operating mechanism includes a valve stem and an operating rod, the valve stem passes through the central axis of the sphere, one end of the valve stem is connected to the sphere, and the other end of the valve stem is rotatably connected to the operating rod.

[0013] As a preferred solution, the fixing frame is arranged at an end of the sphere opposite to the end where the operating mechanism is arranged.

[0014] As a preferred solution, the rollers are provided in multiple pairs, and the rollers of each pair are symmetrically distributed about the central axis of the sphere.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model is provided with a sealing ring and a ball. Two sealing rings are provided and are symmetrically distributed with the sphere as the center. A ball cavity is provided at one end of the sealing ring close to the sphere. The ball is rotatably provided in the ball cavity. By providing the ball and the ball cavity, the ball in contact with the sphere also rotates synchronously during the rotation of the sphere. In this way, the friction between the sphere and the sealing ring is reduced by the mutual rolling between the sphere and the ball, thereby increasing the service life of the sphere.

[0017] The utility model is provided with a fixing frame and a roller, wherein the roller is rotatably arranged on the fixing frame, and the circumferential side surface of the roller is in contact with the spherical surface of the ball. By providing the fixing frame and the roller, the roller is driven to rotate synchronously with the rotation of the ball; and the mutual rolling of the ball and the roller reduces the wear of the bottom of the ball during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional schematic diagram of an angle of the present invention;

[0019] Figure 2 A three-dimensional schematic diagram of the present invention from another angle;

[0020] Figure 3 It is a front view of the utility model.

[0021] In the figure: 1. sphere; 2. valve seat; 21. sealing ring; 211. ball cavity; 22. ball; 23. filter plate; 24. fixing frame; 25. roller; 3. operating mechanism; 31. valve stem; 32. operating lever. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the embodiments.

[0023] The following examples are intended to illustrate the present invention and are not intended to limit the scope of protection of the present invention. The conditions in the examples may be further adjusted according to specific conditions. Simple improvements to the method of the present invention based on the concept of the present invention fall within the scope of protection claimed by the present invention.

[0024] See also Figure 1-3 The utility model provides a wear-resistant ball valve, comprising:

[0025] sphere1;

[0026] The valve seat 2 includes a sealing ring 21 and a ball 22. Two sealing rings 21 are provided, and the two sealing rings 21 are symmetrically distributed with the sphere 1 as the center. The sealing ring 21 is provided with a ball cavity 211 at one end close to the sphere 1. The ball 22 is rotatably arranged in the ball cavity 211. The channel in the middle of the sphere 1 matches the aperture of the middle ring opening of the sealing ring 21. By providing the ball 22 and the ball cavity 211, during the rotation of the sphere 1, the ball 22 in contact with the sphere 1 also rotates synchronously. In this way, the friction between the sphere 1 and the sealing ring 21 is reduced by the mutual rolling between the sphere 1 and the ball 22, thereby increasing the service life of the sphere 1.

[0027] The operating mechanism 3 is provided on the sphere 1. The user controls the rotation of the sphere 1 through the operating mechanism 3, thereby controlling the flow or cutoff of the medium in the pipeline;

[0028] The valve seat 2 also includes a filter plate 23, which is arranged at one end of the sealing ring 21 away from the ball cavity 211. By providing the filter plate 23, the medium in the pipeline is filtered by the filter plate 23 before passing through the ball 1, so that solids in the medium with a particle size larger than the mesh aperture of the filter plate 23 are blocked by the filter plate 23. This prevents the solid particles in the medium from passing through the ball 1 during the high-speed flow process and causing wear of the ball 1, thereby further increasing the service life of the ball 1.

[0029] The valve seat 2 further includes a fixing frame 24 and a roller 25. The roller 25 is rotatably mounted on the fixing frame 24, and the circumferential side of the roller 25 is in contact with the spherical surface of the ball 1. By providing the fixing frame 24 and the roller 25, the roller 25 is driven to rotate synchronously with the rotation of the ball 1. The mutual rolling of the ball 1 and the roller 25 reduces the wear on the bottom of the ball 1 during the rotation process.

[0030] The operating mechanism 3 includes a valve stem 31 and an operating rod 32. The valve stem 31 passes through the central axis of the sphere 1. One end of the valve stem 31 is connected to the sphere 1, and the other end of the valve stem 31 is rotatably connected to the operating rod 32. By setting the valve stem 31 and the operating rod 32, when the user needs to allow the medium in the pipeline to flow, the operating rod 32 is manually rotated 90 degrees, thereby driving the valve stem 31 and the sphere 1 connected to the valve stem 31 to rotate 90 degrees. At this time, the channel of the sphere 1 is connected to the ring opening in the middle of the sealing ring 21.

[0031] The fixing frame 24 is provided at the end of the sphere 1 opposite to the end where the operating mechanism 3 is provided. The fixing frame 24 is fixedly installed in the pipeline, and the sphere 1 rotates around the center of the fixing frame 24.

[0032] The rollers 25 are provided in multiple pairs, and each pair of rollers 25 is symmetrically distributed about the central axis of the sphere 1. By providing multiple pairs of rollers 25 and evenly distributing the multiple pairs of rollers 25, the speed of the sphere 1 during rotation is more uniform.

[0033] The working principle and use process of this utility model:

[0034] When the user needs to allow the medium in the pipeline to circulate, the user manually rotates the operating rod 32 90 degrees, thereby driving the valve stem 31 and the ball 1 connected to the valve stem 31 to rotate 90 degrees. At this time, the channel of the ball 1 is connected to the ring opening in the middle of the sealing ring 21, so that the medium in the pipeline can circulate;

[0035] When the user needs to allow the medium in the pipeline to flow, the user manually rotates the operating rod 32 90 degrees in the opposite direction, thereby driving the valve stem 31 and the ball 1 connected to the valve stem 31 to rotate 90 degrees in the opposite direction. At this time, the channel of the ball 1 and the middle ring opening of the sealing ring 21 are misaligned, so that the pipeline is sealed and the medium is cut off;

[0036] During the flow of the medium, the medium is filtered by the filter plate 23 before passing through the sphere 1 to prevent the solid particles in the medium from wearing the sphere 1 during the high-speed flow of the medium.

[0037] During the rotation of the sphere 1, the balls 22 in contact with the sphere 1 also rotate synchronously. In this way, the friction between the sphere 1 and the sealing ring 21 is reduced by the mutual rolling between the sphere 1 and the balls 22, thereby increasing the service life of the sphere 1.

[0038] At the same time, as the ball 1 rotates, the roller 25 is driven to rotate synchronously; through the mutual rolling of the ball 1 and the roller 25, the wear of the bottom of the ball 1 during the rotation process is reduced.

[0039] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant ball valve, characterized in that: include: sphere(1); A valve seat (2), the valve seat (2) comprising a sealing ring (21) and a ball (22), two sealing rings (21) being provided, and the two sealing rings (21) being symmetrically distributed with the sphere (1) as the center, the sealing ring (21) being provided with a ball cavity (211) at an interval at one end thereof close to the sphere (1), and the ball (22) being rotatably provided in the ball cavity (211); An operating mechanism (3) is provided on the sphere (1).

2. The wear-resistant ball valve according to claim 1, characterized in that: The valve seat (2) further comprises a filter plate (23), and the filter plate (23) is arranged at an end of the sealing ring (21) away from the ball cavity (211).

3. The wear-resistant ball valve according to claim 2, characterized in that: The valve seat (2) further comprises a fixing frame (24) and a roller (25), wherein the roller (25) is rotatably arranged on the fixing frame (24), and the circumferential side surface of the roller (25) is in contact with the spherical surface of the ball (1).

4. The wear-resistant ball valve according to claim 1, characterized in that: The operating mechanism (3) comprises a valve stem (31) and an operating rod (32), wherein the valve stem (31) passes through the central axis of the sphere (1), one end of the valve stem (31) is connected to the sphere (1), and the other end of the valve stem (31) is rotatably connected to the operating rod (32).

5. The wear-resistant ball valve according to claim 3, characterized in that: The fixing frame (24) is arranged at an end of the sphere (1) opposite to the end where the operating mechanism (3) is arranged.

6. The wear-resistant ball valve according to claim 5, characterized in that: The rollers (25) are provided in a plurality of pairs, and each pair of the rollers (25) is symmetrically distributed about the central axis of the sphere (1).

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