Wear-resistant ball valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a wear-resistant ball valve which comprises a ball valve shell, a wear-resistant bearing is arranged in the ball valve shell, the wear-resistant bearing comprises outer rings and connecting screws, the two outer rings are fixedly connected through the eight connecting screws, a plurality of rollers are arranged in the two outer rings, and the two outer rings are fixedly connected through the connecting screws. The multiple rollers are divided into two sets, the two sets of rollers are symmetrically distributed, the two sets of rollers are rotationally matched with the two outer rings respectively, and the two sets of rollers are rotationally matched with the inner ring. By arranging the connecting flange, the ball valve can be in butt joint with a pipeline quickly, then the purpose of rotating the threaded column and the valve rod is achieved by rotating the switch handle, and the valve element ball can be driven to rotate in a more labor-saving mode so as to control the on-off state of the ball valve. The wear-resistant bearing is arranged at the neck position of the asymmetric end of the ball valve shell, friction between the valve rod and the pipe wall in the using process of the ball valve can be reduced, and the service life of the ball valve is prolonged.

Description

Technical Field

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

[0002] Ball valves, with their advantages of easy operation and low flow resistance, occupy a key position in many fluid transportation pipeline systems such as petrochemicals, natural gas transmission, and water supply and drainage. However, current ball valve technology still faces many wear-resistance issues that urgently need to be addressed.

[0003] Traditional ball valves typically use common metal materials for both the ball and seat, such as stainless steel. Some designs focus on improving the seat by using rubber-based soft sealing materials. While rubber offers good initial sealing performance and can cushion the ball's rotational friction to some extent, its poor aging resistance makes it prone to hardening and cracking under prolonged fluid immersion, temperature changes, and mechanical stress, leading to seal failure. Furthermore, rubber's insufficient mechanical strength prevents it from withstanding significant pressure shocks, limiting the applicability of ball valves.

[0004] In summary, existing wear-resistant measures for ball valves all have varying degrees of shortcomings and are insufficient to meet the complex and ever-changing demands of industrial applications. To overcome these challenges and ensure the safe, stable, and efficient operation of pipeline systems, we propose a wear-resistant ball valve. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant ball valve that can solve the problems mentioned above.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A wear-resistant ball valve includes a ball valve housing, within which a wear-resistant bearing is provided. The wear-resistant bearing includes an outer ring and a connecting screw. Two outer rings are fixedly connected by eight connecting screws. Several rollers are provided within the two outer rings. The rollers are divided into two groups, which are symmetrically distributed. The two groups of rollers are rotatably engaged with the two outer rings respectively, and both groups of rollers are rotatably engaged with the inner rings. Two sealing rings are provided on one side surface of each of the two groups of rollers.

[0008] Preferably, the ball valve housing is further provided with a valve core ball, the valve core ball is provided with a circular through hole, a valve stem is provided on one side of the valve core ball, one end of the valve stem is fixedly connected to one side surface of the valve core ball, the valve stem passes through a wear-resistant bearing, and one end of the valve stem is provided with a threaded post.

[0009] Preferably, a washer, a switch handle, and a limiting nut are fitted onto the threaded post. The washer has a circular through hole, and the threaded post passes through the circular through hole in the washer. The switch handle has an irregularly shaped through hole, and the cross-section of the threaded post is slightly smaller than the irregularly shaped through hole in the switch handle. The threaded post passes through the irregularly shaped through hole in the switch handle, and the limiting nut is adapted to the threaded post.

[0010] Preferably, sealing rings are provided on both sides of the valve core ball, one side surface of each of the two sealing rings is fixedly connected to the inner surface of the ball valve housing, and the inner side surface of each of the two sealing rings is in sliding fit with the valve core ball.

[0011] Preferably, the ball valve housing has two connecting flanges at each end, and each connecting flange has six bolt holes.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This utility model discloses a wear-resistant ball valve. By setting a connecting flange, the ball valve can be quickly connected to the pipeline. Then, by turning the switch handle, the threaded column and valve stem can be rotated, which can drive the valve core ball to rotate more easily, thereby controlling the opening and closing state of the ball valve. The wear-resistant bearing is set at the neck position of the asymmetrical end of the ball valve shell, and the valve stem is connected to the inner ring, which can reduce the friction between the valve stem and the pipe wall during the use of the ball valve, increase the service life of the ball valve, and improve the wear resistance of the ball valve. At the same time, the wear-resistant bearing is made of stainless steel, which further improves the service life of the device. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a wear-resistant ball valve according to this utility model;

[0015] Figure 2 This is a utility model Figure 1 Enlarged view of a portion of point A in the middle;

[0016] Figure 3 This is a schematic diagram of the internal structure of a wear-resistant ball valve according to this utility model;

[0017] Figure 4 This is a schematic diagram of the ball valve shell structure in a wear-resistant ball valve according to this utility model;

[0018] Figure 5 This is a schematic diagram of the explosion structure of the wear-resistant bearing in a wear-resistant ball valve according to this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Ball valve housing; 2. Wear-resistant bearing; 201. Outer ring; 202. Connecting screw; 203. Roller; 204. Inner ring; 205. Sealing ring; 3. Valve core ball; 4. Valve stem; 5. Threaded column; 6. Gasket; 7. Switch handle; 8. Limit nut; 9. Sealing ring; 10. Connecting flange. Detailed Implementation

[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0022] like Figures 3-5 As shown, a wear-resistant ball valve includes a ball valve housing 1. A wear-resistant bearing 2 is provided inside the ball valve housing 1. The wear-resistant bearing 2 includes an outer ring 201 and a connecting screw 202. Two outer rings 201 are fixedly connected by eight connecting screws 202. A plurality of rollers 203 are provided inside the two outer rings 201. The plurality of rollers 203 are divided into two groups. The two groups of rollers 203 are symmetrically distributed. The two groups of rollers 203 are rotatably engaged with the two outer rings 201 respectively, and both groups of rollers 203 are rotatably engaged with the inner ring 204. Two sealing rings 205 are provided on one side surface of each of the two groups of rollers 203.

[0023] like Figures 3-5 As shown, the ball valve housing 1 serves as a shell for mounting the other components of the device. It has a three-way pipe structure. The wear-resistant bearing 2 is located at the neck position of the asymmetrical end of the ball valve housing 1. Its function is to reduce the friction between the valve stem 4 and the pipe wall during use, increasing the ball valve's service life and improving its wear resistance. The outer ring 201 of the bearing is a split structure, connected and assembled via a connecting screw 202. It also allows for the removal and replacement of the internal roller 203. The roller 203 rotates with the outer ring 201 and inner ring 204, increasing the smoothness of the wear-resistant bearing 2. The sealing ring 205 seals the sidewall of the wear-resistant bearing 2, preventing liquid leakage from the bearing. Furthermore, the wear-resistant bearing 2 is made entirely of stainless steel, further improving the device's service life.

[0024] like Figures 1-2 As shown, the ball valve housing 1 is also provided with a valve core ball 3. The valve core ball 3 is provided with a circular through hole. A valve stem 4 is provided on one side of the valve core ball 3. One end of the valve stem 4 is fixedly connected to one side surface of the valve core ball 3. The valve stem 4 passes through the wear-resistant bearing 2. One end of the valve stem 4 is provided with a threaded post 5.

[0025] like Figures 1-2As shown, the function of the valve core ball 3 is to rotate and control the opening and closing state of the ball valve housing 1. The function of the valve stem 4 is to connect the valve core ball 3. Rotating the valve stem 4 achieves the purpose of rotating the valve core ball 3. The wear-resistant bearing 2 is sleeved on the outside of the valve stem 4, and the inner ring 204 is connected to the valve stem 4 to reduce the friction of the valve stem 4 during use and improve the service life of the ball valve.

[0026] like Figures 2-3 As shown, a washer 6, a switch handle 7, and a limiting nut 8 are fitted on the threaded post 5. The washer 6 has a circular through hole, and the threaded post 5 passes through the circular through hole on the washer 6. The switch handle 7 has an irregular through hole. The cross-section of the threaded post 5 is slightly smaller than the irregular through hole on the switch handle 7. The threaded post 5 passes through the irregular through hole on the switch handle 7. The limiting nut 8 is adapted to the threaded post 5.

[0027] like Figures 2-3 As shown, a washer 6, a switch handle 7, and a limit nut 8 are fitted onto the threaded column 5. First, the washer 6 is installed, then the hole on the switch handle 7 is aligned with the threaded column 5 and installed. Finally, the switch handle 7 is fixed by the limit nut 8. Rotating the switch handle 7 achieves the purpose of rotating the threaded column 5 and the valve stem 4, which can save more effort.

[0028] like Figures 1-3 As shown, sealing rings 9 are provided on both sides of the valve core ball 3. One side surface of each of the two sealing rings 9 is fixedly connected to the inner surface of the ball valve housing 1, and the inner side surface of each of the two sealing rings 9 is slidably engaged with the valve core ball 3.

[0029] like Figures 1-3 As shown, the function of the sealing ring 9 is to prevent leakage of the ball valve when it is closed, thereby improving the sealing performance of the device.

[0030] like Figure 1 As shown, the ball valve housing 1 has two connecting flanges 10 at both ends, and each of the two connecting flanges 10 has six bolt holes;

[0031] like Figure 1 As shown, the function of the connecting flange 10 is to facilitate the connection between the ball valve and the pipeline.

[0032] The working principle of this utility model is as follows: During use, the ball valve can be quickly connected to the pipeline through the connecting flange 10. Then, by turning the switch handle 7, the threaded column 5 and valve stem 4 can be rotated, which can drive the valve core ball 3 to rotate more easily, thereby controlling the opening and closing state of the ball valve. The wear-resistant bearing 2 is set at the neck position of the asymmetrical end of the ball valve shell 1. The valve stem 4 is connected to the inner ring 204, which can reduce the friction between the valve stem 4 and the pipe wall during the use of the ball valve, increase the service life of the ball valve, and improve the wear resistance of the ball valve. At the same time, the wear-resistant bearing 2 is made of stainless steel, which further improves the service life of the device.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A wear-resistant ball valve, characterized in that: The device includes a ball valve housing (1), and a wear-resistant bearing (2) is provided inside the ball valve housing (1). The wear-resistant bearing (2) includes an outer ring (201) and a connecting screw (202). The two outer rings (201) are fixedly connected by eight connecting screws (202). The two outer rings (201) are provided with a plurality of rollers (203). The plurality of rollers (203) are divided into two groups. The two groups of rollers (203) are symmetrically distributed. The two groups of rollers (203) are rotatably engaged with the two outer rings (201) respectively, and the two groups of rollers (203) are rotatably engaged with the inner ring (204). Two sealing rings (205) are provided on one side surface of the two groups of rollers (203).

2. The wear-resistant ball valve according to claim 1, characterized in that: The ball valve housing (1) is also provided with a valve core ball (3), the valve core ball (3) is provided with a circular through hole, the valve core ball (3) is provided with a valve stem (4) on one side, one end of the valve stem (4) is fixedly connected to one side surface of the valve core ball (3), the valve stem (4) passes through the wear-resistant bearing (2), and one end of the valve stem (4) is provided with a threaded post (5).

3. The wear-resistant ball valve according to claim 2, characterized in that: The threaded post (5) is fitted with a washer (6), a switch handle (7), and a limiting nut (8). The washer (6) has a circular through hole, and the threaded post (5) passes through the circular through hole on the washer (6). The switch handle (7) has an irregular through hole. The cross-section of the threaded post (5) is slightly smaller than the irregular through hole on the switch handle (7). The threaded post (5) passes through the irregular through hole on the switch handle (7). The limiting nut (8) is adapted to the threaded post (5).

4. The wear-resistant ball valve according to claim 3, characterized in that: The valve core ball (3) is provided with sealing rings (9) on both sides. One side surface of the two sealing rings (9) is fixedly connected to the inner surface of the ball valve housing (1), and the inner side surface of the two sealing rings (9) is slidably engaged with the valve core ball (3).

5. The wear-resistant ball valve according to claim 4, characterized in that: The ball valve housing (1) has two connecting flanges (10) at both ends, and each of the two connecting flanges (10) has six bolt holes.

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