Wear-resistant ball valve

Abstract

The utility model relates to the technical field of ball valves, in particular to a wear-resistant ball valve. The ball valve comprises a valve body, the upper end of the valve body is rotationally connected with a valve rod, a ball body is arranged on the inner wall of the valve body, the valve rod and the ball body are fixed, auxiliary assemblies are arranged at the two ends of the valve body, a sealing assembly is arranged between the ball body and the valve body, and the sealing assembly comprises an installation groove formed in the inner wall of the valve body. An air bag is mounted on the inner wall of the mounting groove, a valve seat is arranged on the inner wall of the mounting groove, and the air bag and the valve seat are fixed. By arranging the sealing assembly, when sealing is needed, the air bag in the mounting groove is filled with air, so that the valve seat is extruded to make contact with the ball body, sealing is conducted, and when sealing is not needed, the air bag is deflated to be shrunk; therefore, the contact between the valve seat and the ball body is reduced, and the effects of reducing the abrasion of the valve seat and improving the abrasion resistance are achieved as far as possible.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a wear-resistant ball valve. Background Technology

[0002] Ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of media. A ball valve consists of a valve body, a ball, a valve seat, and a valve stem. When using a ball valve, rotating the valve stem causes the ball to rotate, thereby opening and closing the ball valve. Sealing is achieved by the valve seat contacting the ball. The wear resistance of the valve is improved by using a ball made of wear-resistant material (such as high-chromium alloy).

[0003] In their daily work, the inventors discovered that when ball valves are in use, the ball is rotated for a long time during operation, which can easily cause wear on the valve seat surface. This wear can affect the sealing performance of the ball valve when it is closed, and may result in insufficient wear resistance. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in practical use, the ball valve in the prior art is prone to wear on the valve seat surface due to long-term rotation of the ball to open and close the ball valve. Long-term wear can affect the sealing performance of the ball valve in the closed state, and may result in insufficient wear resistance. Therefore, a wear-resistant ball valve is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wear-resistant ball valve, comprising a valve body, a valve stem rotatably connected to the upper end of the valve body, a ball disposed on the inner wall of the valve body, the valve stem and the ball being fixed, auxiliary components disposed at both ends of the valve body, and a sealing assembly disposed between the ball and the valve body, the sealing assembly comprising an installation groove formed in the inner wall of the valve body, an air bladder installed on the inner wall of the installation groove, a valve seat disposed on the inner wall of the installation groove, and the air bladder and the valve seat being fixed.

[0006] The effect achieved by the above components is as follows: by setting the sealing component, when sealing is required, the air bladder in the mounting groove is filled with air, so that the valve seat is squeezed and contacted with the ball, thereby sealing. When sealing is not required, the air bladder is deflated, so that the valve seat is returned to the mounting groove, thereby reducing the contact between the valve seat and the ball, and thus minimizing valve seat wear and improving wear resistance.

[0007] Preferably, a sealing gasket is fixedly connected to the right end of the valve seat, and a sealing groove adapted to the sealing gasket is provided on one side of the inner wall of the mounting groove.

[0008] The effect achieved by the above components is to seal the valve seat and the sealing groove by setting a sealing gasket that fits into the sealing groove.

[0009] Preferably, a protective pad, which is a rubber ring, is fixedly connected to one side of the valve seat.

[0010] The effect achieved by the above components is that by setting a protective pad, which contacts the ball, the wear between the valve seat and the ball is reduced.

[0011] Preferably, an air pipe is fixedly connected to the arc surface of the valve body, and the air pipe is used to connect an external air pump.

[0012] The effect achieved by the above components is to connect the air pump to the air tube, start the air pump, and inflate or deflate the airbag.

[0013] Preferably, the auxiliary component includes a plurality of evenly distributed grooved auxiliary blocks fixedly connected to the arc surface of the valve body, an L-shaped block slidably connected to the inner wall of the grooved auxiliary block, and an adjusting screw provided on the inner wall of the grooved auxiliary block.

[0014] The effect achieved by the above components is as follows: when it is necessary to install the ball valve and the pipe flange, align the ball valve and the pipe, then turn the four adjusting screws to make the four L-shaped blocks move closer to the center, thereby assisting in limiting the ball valve and the pipe, and then fixing it with bolts.

[0015] Preferably, a rubber pad is fixedly connected to one side of the L-shaped block, and an anti-slip protrusion is provided on one side of the rubber pad.

[0016] The effect achieved by the above components is to assist the L-shaped block in limiting the pipe by setting rubber pads.

[0017] Preferably, a turning block is fixedly connected to the lower end of the adjusting screw, and the adjusting screw is threadedly connected to the L-shaped block.

[0018] The effect achieved by the above components is that rotating the turning block causes the adjusting screw to rotate.

[0019] In summary, the beneficial effects of this utility model are as follows:

[0020] In this invention, by setting a sealing component, when sealing is required, the air bladder in the mounting groove is filled with air, causing the valve seat to contact the ball, thereby achieving a seal. When sealing is not required, the air bladder is deflated, causing the valve seat to retract into the mounting groove, thus reducing the contact between the valve seat and the ball. This minimizes valve seat wear and improves wear resistance, solving the problem in the prior art where prolonged rotation of the ball during use can easily cause wear on the valve seat surface, which can affect the sealing performance of the ball valve in the closed state and potentially lead to insufficient wear resistance. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the cross-section of this utility model;

[0023] Figure 3 This utility model Figure 2 An enlarged three-dimensional structural diagram of A in the middle;

[0024] Figure 4 This is a three-dimensional structural diagram of the auxiliary component of this utility model.

[0025] Legend: 1. Valve body; 2. Sealing assembly; 3. Auxiliary assembly; 4. Valve stem; 5. Ball; 21. Mounting groove; 22. Air bladder; 23. Valve seat; 24. Protective pad; 25. Sealing pad; 26. Air pipe; 31. Grooved auxiliary block; 32. L-shaped block; 33. Adjusting screw; 34. Tightening block; 35. Rubber pad. Detailed Implementation

[0026] Reference Figure 1 and Figure 2 as well as Figure 3 As shown, this utility model provides a technical solution: a wear-resistant ball valve includes a valve body 1, a valve stem 4 is rotatably connected to the upper end of the valve body 1, a ball 5 is provided on the inner wall of the valve body 1, the valve stem 4 and the ball 5 are fixed, auxiliary components 3 are provided at both ends of the valve body 1, and a sealing component 2 is provided between the ball 5 and the valve body 1.

[0027] The specific settings and functions of sealing component 2 and auxiliary component 3 will be explained below.

[0028] Reference Figure 2 and Figure 3As shown in this embodiment: the sealing assembly 2 includes a mounting groove 21 formed in the inner wall of the valve body 1. An air bladder 22 is installed on the inner wall of the mounting groove 21, and a valve seat 23 is provided on the inner wall of the mounting groove 21. The air bladder 22 and the valve seat 23 are fixed. By setting the sealing assembly 2, when sealing is required, the air bladder 22 in the mounting groove 21 is filled with air, which compresses the valve seat 23 to contact the ball 5, thereby achieving a seal. When sealing is not required, the air bladder 22 is deflated, causing the valve seat 23 to retract into the mounting groove 21, thereby reducing the contact between the valve seat 23 and the ball 5, and thus minimizing the wear of the valve seat 23 and improving its wear resistance. The valve seat 23 has a sealing gasket 25 fixedly connected to its right end. The inner wall of the mounting groove 21 has a sealing groove that matches the sealing gasket 25. By setting the sealing gasket 25 to fit into the sealing groove, the valve seat 23 and the sealing groove are sealed. A protective gasket 24 is fixedly connected to one side of the valve seat 23. The protective gasket 24 is a rubber ring. By setting the protective gasket 24, the protective gasket 24 contacts the ball 5, which better reduces the wear of the valve seat 23 and the ball 5. An air pipe 26 is fixedly connected to the arc surface of the valve body 1. The air pipe 26 is used to connect an external air pump. By connecting the air pump to the air pipe 26 and starting the air pump, the air bag 22 is inflated or deflated.

[0029] Reference Figure 4 As shown in this embodiment: the auxiliary component 3 includes multiple evenly distributed grooved auxiliary blocks 31 fixedly connected to the arc surface of the valve body 1. L-shaped blocks 32 are slidably connected to the inner wall of the grooved auxiliary blocks 31. Adjusting screws 33 are provided on the inner wall of the grooved auxiliary blocks 31. When the ball valve needs to be installed with the pipe flange, the ball valve is aligned with the pipe, and then the four adjusting screws 33 are turned so that the four L-shaped blocks 32 move closer to the center, thereby assisting the ball valve to limit the position of the pipe. Then, it is fixed by bolts. A rubber pad 35 is fixedly connected to one side of the L-shaped block 32. An anti-slip protrusion is provided on one side of the rubber pad 35. By setting the rubber pad 35, the L-shaped block 32 is assisted to limit the position of the pipe. A turning block 34 is fixedly connected to the lower end of the adjusting screw 33. The adjusting screw 33 is threadedly connected to the L-shaped block 32. Rotating the turning block 34 causes the adjusting screw 33 to rotate.

[0030] Working principle:

[0031] When using a ball valve, rotating the valve stem 4 causes the ball 5 to rotate, thereby opening and closing the valve. Sealing is achieved by the valve seat 23 contacting the ball 5. The ball 5, made of a wear-resistant material (such as high-chromium alloy), enhances the valve's wear resistance. When sealing is required, the air bladder 22 in the mounting groove 21 is inflated, compressing the valve seat 23 into contact with the ball 5, thus creating a seal. When sealing is not needed, the air bladder 22 deflates, causing the valve seat 23 to retract into the mounting groove 21, reducing contact between the valve seat 23 and the ball 5. This minimizes wear on the valve seat 23 and improves its wear resistance. Insert the sealing gasket 25 into the sealing groove to seal between the valve seat 23 and the sealing groove. By setting the protective gasket 24, the protective gasket 24 contacts the ball 5, which better reduces the wear of the valve seat 23 and the ball 5. Connect the air pump to the air pipe 26 and start the air pump to inflate or deflate the air bag 22. When it is necessary to install the ball valve with the pipe flange, align the ball valve with the pipe and then turn the four adjusting screws 33 to make the four L-shaped blocks 32 move closer to the center, thereby assisting the ball valve to limit the pipe position. Then fix it with bolts. By setting the rubber gasket 35, the L-shaped blocks 32 are used to limit the pipe position. Rotate the turning block 34 to make the adjusting screw 33 rotate.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A wear-resistant ball valve, comprising a valve body (1), characterized in that: A valve stem (4) is rotatably connected to the upper end of the valve body (1). A ball (5) is provided on the inner wall of the valve body (1). The valve stem (4) and the ball (5) are fixed. Auxiliary components (3) are provided at both ends of the valve body (1). A sealing component (2) is provided between the ball (5) and the valve body (1). The sealing component (2) includes an installation groove (21) opened on the inner wall of the valve body (1). An airbag (22) is installed on the inner wall of the installation groove (21). A valve seat (23) is provided on the inner wall of the installation groove (21). The airbag (22) and the valve seat (23) are fixed.

2. The wear-resistant ball valve according to claim 1, characterized in that: A sealing gasket (25) is fixedly connected to the right end of the valve seat (23), and a sealing groove that matches the sealing gasket (25) is provided on one side of the inner wall of the mounting groove (21).

3. The wear-resistant ball valve according to claim 2, characterized in that: A protective pad (24) is fixedly connected to one side of the valve seat (23), and the protective pad (24) is a rubber ring.

4. The wear-resistant ball valve according to claim 3, characterized in that: The arc surface of the valve body (1) is fixedly connected to an air pipe (26), which is used to connect an external air pump.

5. The wear-resistant ball valve according to claim 4, characterized in that: The auxiliary component (3) includes a plurality of evenly distributed grooved auxiliary blocks (31) fixedly connected to the arc surface of the valve body (1). The inner wall of the grooved auxiliary block (31) is slidably connected to an L-shaped block (32), and the inner wall of the grooved auxiliary block (31) is provided with an adjusting screw (33).

6. The wear-resistant ball valve according to claim 5, characterized in that: A rubber pad (35) is fixedly connected to one side of the L-shaped block (32), and an anti-slip protrusion is provided on one side of the rubber pad (35).

7. A wear-resistant ball valve according to claim 6, characterized in that: The lower end of the adjusting screw (33) is fixedly connected to a turning block (34), and the adjusting screw (33) is threadedly connected to the L-shaped block (32).

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