Ball valve with efficient sealing structure

Abstract

The utility model relates to the technical field of ball valves, and discloses a ball valve with an efficient sealing structure, which comprises a valve body, connecting pipes are fixedly connected to the left side and the right side outside the valve body, flange plates are fixedly connected to the exteriors of the connecting pipes, and supporting rods are fixedly connected to the interiors of the connecting pipes. An impeller is rotatably connected to the bottom end of the supporting rod, a rotating rod is fixedly connected to the exterior of the impeller, a mounting shell is fixedly connected to the other end of the rotating rod, a plurality of first springs are fixedly connected to the interior of the mounting shell, and a brush plate is fixedly connected to the other ends of the first springs. According to the automatic cleaning ball valve, fine impurities contained in fluid can be filtered through the filter screen, abrasion to the interior of the ball valve is reduced, leakage caused by abrasion is avoided, meanwhile, when the fluid flows at a high speed, the brush rotates and cleans the surface of the filter screen, automatic cleaning operation is achieved, and the phenomenon that the filter screen is blocked by the impurities after long-time use is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve with a high-efficiency sealing structure. Background Art

[0002] A ball valve is a common fluid control valve that controls the flow of fluid through a spherical valve core. The ball of the ball valve has a central hole. When the valve is rotated to a specific angle, the hole can be aligned with or blocked with the flow channel of the pipeline, thereby controlling the flow of the fluid. Ball valves usually have good sealing performance and durability, and are suitable for flow control of various liquid and gas media. They are widely used in industries such as industry, chemical industry, petroleum, and natural gas. In addition, ball valves are simple to operate and are generally opened and closed by rotating a handle or electric drive. They are suitable for occasions that require fast opening and closing and high sealing.

[0003] When using a traditional ball valve, fine impurities in the fluid flowing through the valve body can cause wear on the ball. Long-term wear can reduce the sealing performance of the ball valve, causing leakage. At the same time, impurities may accumulate inside the valve, affecting the flow of fluid and making it difficult to open and close the valve. To address these issues, those skilled in the art have proposed a ball valve with a highly efficient sealing structure. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a ball valve with an efficient sealing structure, which aims to improve the problem in the prior art that when the fluid flows through the interior of the ball valve, the fine impurities contained in the fluid will cause wear on the ball, resulting in a decrease in the sealing performance of the ball valve, thereby causing leakage.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a ball valve with an efficient sealing structure, comprising a valve body, wherein the left and right sides of the exterior of the valve body are fixedly connected to connecting pipes, the exterior of the connecting pipe is fixedly connected to a flange, the interior of the connecting pipe is fixedly connected to a support rod, the bottom end of the support rod is rotatably connected to an impeller, the exterior of the impeller is fixedly connected to a rotating rod, the other end of the rotating rod is fixedly connected to a mounting shell, the interior of the mounting shell is fixedly connected to a plurality of springs, the other ends of the plurality of springs are fixedly connected to a brush plate, a filter is installed inside the connecting pipe, the interior of the valve body is rotatably connected to a ball via a rotating shaft, sealing assemblies are provided on the front and rear sides of the ball, the sealing assemblies are used to improve the sealing effect of the ball valve, and protective assemblies are provided on the front and rear sides of the exterior of the valve body, the protective assemblies are used to protect the valve body.

[0006] Furthermore, the sealing assembly includes two movable plates and multiple sleeve rods, the two movable plates are respectively arranged on the front and rear sides of the outside of the sphere, and the multiple sleeve rods are fixedly connected to the outside of the sphere. The inside of the sleeve rod is fixedly connected to Spring 2, and the other end of Spring 2 is fixedly connected to the limiting block. The outside of the limiting block is fixedly connected to a connecting rod, and one end of the connecting rod extends to the outside of the sleeve rod and is fixedly connected to the movable plate.

[0007] Furthermore, a rubber ring is fixedly connected to the inner side of the flange, a flat rubber ring is provided on the outer wall of the flange, and a fitting groove is provided on the side of the flat rubber ring close to the flange, and the fitting groove matches the shape of the rubber ring.

[0008] Furthermore, a valve stem is fixedly connected to the outside of the rotating shaft above the sphere, and a top end of the valve stem extends to the outside of the valve body and is fixedly connected to a rotating handle.

[0009] Furthermore, the protective component includes an arc-shaped plate, the inner side of which is fixedly connected to two sliding rods, the outer side of which is slidingly connected to two sliders, a tension spring fixedly connected between the two sliders, the tension spring being sleeved on the outside of the sliding rod, the outer side of the slider being rotatably connected to a connecting rod, and the connecting rod being rotatably connected to the outside of the valve body.

[0010] Furthermore, the brush plate is slidably connected to the interior of the mounting shell, and the exterior of the brush plate is in contact with the surface of the filter screen.

[0011] Furthermore, the limit block is slidably connected to the inside of the sleeve rod, and the outside of the sleeve rod is slidably connected to the inside of the movable plate.

[0012] Furthermore, the diameter of the longitudinal section of the movable plate is larger than the inner diameter of the connecting pipe, and the outer wall of the movable plate is slidably connected to the inner wall of the valve body.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the filter screen can filter out fine impurities contained in the fluid, reducing the wear on the inside of the ball valve, thereby avoiding leakage caused by wear. At the same time, when the fluid flows at high speed, it will generate an impact on the impeller to cause it to rotate, and then the rotating rod drives the mounting shell to rotate, so that the brush cleans the surface of the filter screen, thereby realizing automatic cleaning operation, avoiding impurities clogging the filter screen after long-term use, and reducing the maintenance workload. The arc plate can block external impacts on the valve body, and then the slider will slide along the slide rod. The tension spring can generate a reaction force to absorb part of the impact, thereby protecting the valve body and avoiding external impacts that cause damage to the ball valve, affecting the sealing and causing the internal fluid to flow out.

[0015] 2. In the utility model, the valve stem is rotated to rotate the handle, thereby moving the movable plate. During the rotation, the spring 2 inside the sleeve rod can push the limit block to move, thereby moving the connecting rod, so that the surface of the movable plate is in close contact with the inner wall of the valve body, thereby ensuring the sealing of the valve after closing and effectively isolating the flow of the fluid. At the same time, the fitting groove opened on the inner side of the flat rubber ring fits with the rubber ring, so that the valve has good sealing after installation, further improving the sealing of the ball valve during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of a ball valve with a high-efficiency sealing structure proposed by the present invention;

[0017] Figure 2 This is a schematic diagram of the valve body structure of a ball valve with a high-efficiency sealing structure proposed by the utility model;

[0018] Figure 3 This is a cross-sectional view of the installation shell of a ball valve with a high-efficiency sealing structure proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the ball structure of a ball valve with a high-efficiency sealing structure proposed by the present invention;

[0020] Figure 5 This is a schematic diagram of the flange structure of a ball valve with a high-efficiency sealing structure proposed by the present invention;

[0021] Figure 6 This is a schematic diagram of the arc plate structure of a ball valve with a high-efficiency sealing structure proposed by the utility model;

[0022] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0023] Legend:

[0024] 1. Valve body; 2. Connecting pipe; 3. Flange; 4. Ball; 5. Movable plate; 6. Valve stem; 7. Turning handle; 8. Support rod; 9. Impeller; 10. Rotating rod; 11. Mounting shell; 12. Filter screen; 13. Spring 1; 14. Brush plate; 15. Sleeve rod; 16. Limit block; 17. Spring 2; 18. Rubber ring; 19. Flat rubber ring; 20. Fitting groove; 21. Connecting rod; 22. Arc plate; 23. Sliding rod; 24. Sliding block; 25. Tension spring; 26. Connecting rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Reference Figure 1 - Figure 3 , the utility model provides an embodiment: a ball valve with an efficient sealing structure, including a valve body 1, the left and right sides of the outside of the valve body 1 are fixedly connected to the connecting pipe 2, the outside of the connecting pipe 2 is fixedly connected to the flange 3, the inside of the connecting pipe 2 is fixedly connected to the support rod 8, the bottom end of the support rod 8 is rotatably connected to the impeller 9, the outside of the impeller 9 is fixedly connected to the rotating rod 10, the other end of the rotating rod 10 is fixedly connected to the mounting shell 11, the inside of the mounting shell 11 is fixedly connected to a plurality of springs 13, the other ends of the plurality of springs 13 are fixedly connected to a brush plate 14, a filter screen 12 is installed inside the connecting pipe 2, the inside of the valve body 1 is rotatably connected to the ball 4 through a rotating shaft, the outside of the rotating shaft above the ball 4 is fixedly connected to the valve stem 6, the top of the valve stem 6 extends to the outside of the valve body 1 and is fixedly connected to the handle 7, the brush plate 14 is slidably connected to the inside of the mounting shell 11, and the outside of the brush plate 14 fits the surface of the filter screen 12.

[0027] Specifically, the valve body 1 and the connecting pipe 2 adopt an integrated casting structure to ensure the sealing of the ball valve. The ball valve can be connected to the external pipe through the flange 3 using matching bolts and nuts, which is convenient for installation and use. The filter 12 installed inside the connecting pipe 2 can filter out fine impurities contained in the fluid when passing through the ball valve, reducing wear on the inside of the ball valve, thereby avoiding leakage caused by wear. The connecting pipe 2 fixes the support rod 8, so that when the fluid flows at high speed, it generates an impulse on the impeller 9 connected to the bottom end of the support rod 8, causing it to rotate, thereby driving the rotating rod 10 to rotate. The rotating rod 10 drives the mounting shell 11 to rotate, and under the push of multiple springs 13, the brush plate 14 is in close contact with the surface of the filter 12, which can be cleaned during rotation, thereby realizing automatic cleaning operation, avoiding impurities clogging the filter 12 after long-term use, and reducing maintenance workload. The valve stem 6 drives the handle 7 to rotate, thereby causing the ball 4 to rotate inside the valve body 1, thereby realizing the opening and closing operation of the valve and controlling the flow of the fluid.

[0028] Reference Figure 2 and Figure 4, sealing assemblies are provided on the front and rear sides of the ball 4, and the sealing assemblies are used to improve the sealing effect of the ball valve. The sealing assembly includes two movable plates 5 and multiple sleeve rods 15. The two movable plates 5 are respectively arranged on the front and rear sides of the outside of the ball 4. The multiple sleeve rods 15 are fixedly connected to the outside of the ball 4. The inside of the sleeve rod 15 is fixedly connected with a spring 2 17. The other end of the spring 2 17 is fixedly connected to the limit block 16. The outside of the limit block 16 is fixedly connected with a connecting rod 21. One end of the connecting rod 21 extends to the outside of the sleeve rod 15 and is fixedly connected to the movable plate 5. The limit block 16 is slidably connected to the inside of the sleeve rod 15. The outside of the sleeve rod 15 is slidably connected to the inside of the movable plate 5. The outer wall of the movable plate 5 is slidably connected to the inner wall of the valve body 1. The longitudinal section diameter of the movable plate 5 is larger than the inner diameter of the connecting pipe 2.

[0029] Specifically, the ball 4 plays a fixing role on multiple sleeve rods 15, so that when the ball 4 rotates, it can drive the two front and rear movable plates 5 to move simultaneously, and the spring 2 17 inside the sleeve rod 15 can push the limit block 16 to move, so that the limit block 16 slides inside the sleeve rod 15 and pushes the connecting rod 21 to move, thereby making the surface of the movable plate 5 close to the inner wall of the valve body 1, thereby ensuring the sealing of the valve after closing and effectively isolating the flow of fluid, wherein the sleeve rod 15 restricts the movement of the limit block 16, so that the spring 2 17 can stably contract, thereby improving the stability of the structure during operation, and at the same time, a sealing ring is provided at the edge of the movable plate 5 to ensure the sealing during rotation, and the longitudinal section diameter of the movable plate 5 is larger than the internal diameter of the connecting pipe 2, so that the movable plate 5 will not be stuck in the interior of the connecting pipe 2 when rotating.

[0030] Reference Figure 6 and Figure 7 , protective components are provided on the front and rear sides of the outside of the valve body 1. The protective components are used to protect the valve body 1. The protective components include an arc-shaped plate 22, and two sliding rods 23 are fixedly connected to the inner side of the arc-shaped plate 22. Two sliders 24 are slidably connected to the outside of the sliding rod 23. A tension spring 25 is fixedly connected between the two sliders 24. The tension spring 25 is sleeved on the outside of the sliding rod 23. The outside of the slider 24 is rotatably connected to a connecting rod 26, and the connecting rod 26 is rotatably connected to the outside of the valve body 1.

[0031] Specifically, the arc plate 22 can block the external impact on the valve body 1, so that 22 can push the two connecting rods 26 to rotate. At this time, under the external force, the slider 24 will slide along the slide rod 23, thereby extending the tension spring 25. The reaction force generated by the tension spring 25 can absorb part of the impact, thereby protecting the valve body 1 and preventing external impact from causing damage to the ball valve, affecting the sealing performance, and causing the internal fluid to flow out.

[0032] Reference Figure 5The outer wall of the flange 3 is provided with a flat rubber ring 19 , and a fitting groove 20 is opened on the side of the flat rubber ring 19 close to the flange 3 , and the fitting groove 20 matches the shape of the rubber ring 18 .

[0033] Specifically, the fitting groove 20 opened on the inner side of the flat rubber ring 19 fits with the rubber ring 18, so that after the valve is installed, the sealing performance of the interface is ensured to be good, and the sealing performance of the ball valve during use is further improved.

[0034] Working principle: When using this ball valve, first connect the flanges 3 at both ends to the pipeline through the matching bolts and nuts to complete the installation operation. Then, when the fluid passes through the ball valve, the fine impurities contained therein can be filtered through the filter screen 12, reducing the wear on the inside of the ball valve, thereby avoiding leakage caused by wear. At the same time, when the fluid flows at high speed, it will generate an impact on the impeller 9 to rotate, thereby driving the rotating rod 10 to rotate, and the rotating rod 10 drives the mounting shell 11 to rotate, and under the push of multiple springs 13, the brush plate 14 is in close contact with the surface of the filter screen 12, which can be cleaned on the surface of the filter screen 12 during rotation, thereby realizing automatic cleaning operation and avoiding long After a period of use, impurities clog the filter 12, reducing the maintenance workload. Secondly, by rotating the valve stem 6, the handle 7 is rotated, and the movable plate 5 is moved. During the rotation, the spring 17 inside the sleeve rod 15 can push the limit block 16 to move, so that the limit block 16 slides inside the sleeve rod 15 and pushes the connecting rod 21 to move, so that the surface of the movable plate 5 is in close contact with the inner wall of the valve body 1, thereby ensuring the sealing of the valve after closing and effectively isolating the flow of the fluid. At the same time, the fitting groove 20 opened on the inner side of the flat rubber ring 19 fits with the rubber ring 18, so that the valve has good sealing after installation, further improving the sealing of the ball valve during use.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ball valve with an efficient sealing structure, comprising a valve body (1), characterized in that: The left and right sides of the exterior of the valve body (1) are fixedly connected to connecting pipes (2), the exterior of the connecting pipe (2) is fixedly connected to a flange (3), the interior of the connecting pipe (2) is fixedly connected to a support rod (8), the bottom end of the support rod (8) is rotatably connected to an impeller (9), the exterior of the impeller (9) is fixedly connected to a rotating rod (10), the other end of the rotating rod (10) is fixedly connected to a mounting shell (11), the interior of the mounting shell (11) is fixedly connected to a plurality of springs (13), the other ends of the plurality of springs (13) are fixedly connected to a brush plate (14), a filter screen (12) is installed inside the connecting pipe (2), the interior of the valve body (1) is rotatably connected to a ball (4) via a rotating shaft, the front and rear sides of the ball (4) are both provided with sealing assemblies, the sealing assemblies are used to improve the sealing effect of the ball valve, the front and rear sides of the exterior of the valve body (1) are both provided with protective assemblies, the protective assemblies are used to protect the valve body (1).

2. A ball valve with a high-efficiency sealing structure according to claim 1, characterized in that: The sealing assembly comprises two movable plates (5) and a plurality of sleeve rods (15), wherein the two movable plates (5) are respectively arranged on the front and rear sides of the outside of the sphere (4), and the plurality of sleeve rods (15) are fixedly connected to the outside of the sphere (4). The inside of the sleeve rod (15) is fixedly connected to a second spring (17), and the other end of the second spring (17) is fixedly connected to a limit block (16). The outside of the limit block (16) is fixedly connected to a connecting rod (21), and one end of the connecting rod (21) extends to the outside of the sleeve rod (15) and is fixedly connected to the movable plate (5).

3. The ball valve with a high-efficiency sealing structure according to claim 1, characterized in that: A rubber ring (18) is fixedly connected to the inner side of the flange (3), and a flat rubber ring (19) is provided on the outer wall of the flange (3). A fitting groove (20) is provided on the side of the flat rubber ring (19) close to the flange (3), and the fitting groove (20) matches the shape of the rubber ring (18).

4. The ball valve with a high-efficiency sealing structure according to claim 1, characterized in that: The outside of the rotating shaft above the sphere (4) is fixedly connected to a valve stem (6), and the top end of the valve stem (6) extends to the outside of the valve body (1) and is fixedly connected to a rotating handle (7).

5. The ball valve with a high-efficiency sealing structure according to claim 1, characterized in that: The protective component includes an arc-shaped plate (22), the inner side of the arc-shaped plate (22) is fixedly connected to two sliding rods (23), the outer side of the sliding rod (23) is slidably connected to two sliders (24), a tension spring (25) is fixedly connected between the two sliders (24), the tension spring (25) is sleeved on the outer side of the sliding rod (23), the outer side of the slider (24) is rotatably connected to a connecting rod (26), and the connecting rod (26) is rotatably connected to the outer side of the valve body (1).

6. The ball valve with a high-efficiency sealing structure according to claim 1, characterized in that: The brush plate (14) is slidably connected to the interior of the mounting shell (11), and the exterior of the brush plate (14) is in contact with the surface of the filter screen (12).

7. The ball valve with a high-efficiency sealing structure according to claim 2, characterized in that: The limit block (16) is slidably connected to the interior of the sleeve rod (15), and the exterior of the sleeve rod (15) is slidably connected to the interior of the movable plate (5).

8. The ball valve with a high-efficiency sealing structure according to claim 2, characterized in that: The longitudinal section diameter of the movable plate (5) is larger than the inner diameter of the connecting pipe (2), and the outer wall of the movable plate (5) is slidably connected to the inner wall of the valve body (1).

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