Ball valve with good sealing

Abstract

This utility model discloses a ball valve with good sealing performance, relating to the field of ball valve technology. It includes a housing, inside which a ball is rotatably disposed. A fixed cylinder is fixedly disposed at the upper end of the housing, and a rotating rod is rotatably disposed inside the fixed cylinder. The lower end of the rotating rod is fixedly connected to the ball, and a sealing ring is connected between the rotating rod and the fixed cylinder. A rotating disk is fixedly connected to the upper end of the rotating rod. A water passage hole is fixedly opened in the middle of the ball, and a flow-diverting annular groove is provided inside the ball. During use, this utility model avoids friction between the first and second hollow sealing rubber bodies and the inner wall of the housing when the ball rotates, reducing their wear rate. This solves the problem in existing ball valves where the sealing rubber ring wears down during ball rotation, resulting in poor sealing performance and reduced practicality.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve with good sealing performance. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the ball valve axis. For example, existing patent publication number CN209800777U, entitled "A Ball Valve with Good Sealing Performance," proposes a similar design. This invention includes a first connecting member, a housing, multiple springs, two first sealing gels, a second connecting member, two limiting plates, a ball, two second sealing gels, a rotating handle, a connecting shaft, two sealing rings, and a rotating shaft. The first and second connecting members are detachably connected to both sides of the housing, and the inner wall of the housing has two annular grooves. The ball has a through hole and is rotatably mounted inside the housing via the rotating shaft and connecting shaft. The connecting shaft connects to the rotating handle. The two limiting plates are mounted on the ball and slidably connected to the inner walls of the two annular grooves. Both first sealing gels are installed inside the housing, and each first sealing gel has an installation groove. Multiple springs are installed in the installation grooves. The two sealing rings and two second sealing gels are all installed inside the housing. This invention has a simple structure, is easy to use, and improves the sealing performance of the ball.

[0003] However, when the ball valve disclosed in the above patent is used, the sealing rubber ring will wear during the rotation of the ball, which will reduce the sealing effect of the device and reduce its practicality. Therefore, it is necessary to propose a ball valve with good sealing performance to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a ball valve with good sealing performance, so as to solve the problem mentioned in the background art that when the ball rotates during use, the sealing rubber ring will wear down, resulting in poor sealing effect and reduced practicality of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ball valve with good sealing performance, comprising a housing, a ball rotatably disposed inside the housing, a fixed cylinder fixedly disposed at the upper end of the housing, a rotating rod rotatably disposed inside the fixed cylinder, the lower end of the rotating rod being fixedly connected to the ball, a sealing ring connecting the rotating rod and the fixed cylinder, a rotating disk fixedly connected at the upper end of the rotating rod, a water passage hole fixedly opened in the middle of the ball, a flow-dividing annular groove disposed inside the ball, a first hollow sealing gel fixedly disposed at the bottom of the ball, and a second hollow sealing gel fixedly disposed at the top of the ball, the second hollow sealing gel and the first hollow sealing gel respectively being movably fitted to the upper and lower inner walls of the housing, the flow-dividing annular groove being interconnected through the first branch groove and the second hollow sealing gel, the flow-dividing annular groove being interconnected through the second branch groove and the second hollow sealing gel, a piston movably disposed inside the rotating rod, and a power assembly disposed between the piston and the rotating disk.

[0006] Preferably, the second hollow sealing gel has a reserved hole in the middle for the rotating rod to pass through.

[0007] Preferably, there are two of each of the first and second branch channels, arranged symmetrically about the center line of the sphere.

[0008] Preferably, the top of the sphere is provided with an air hole, and the upper and lower ends of the air hole are respectively connected to the interior of the rotating rod and the flow-dividing annular groove.

[0009] Preferably, the power assembly includes a threaded hole fixedly formed inside the rotating disk, a screw is threadedly connected inside the threaded hole, one end of the screw is rotatably connected to the rotating rod, a handle is fixedly connected to the upper end of the screw, and an auxiliary component is provided between the handle and the rotating disk.

[0010] Preferably, the auxiliary component includes a limiting rod, which is fixedly disposed on the lower surface of the handle. A limiting ring groove is fixedly formed inside the rotating disk, and a stop block is fixedly disposed inside the limiting ring groove. The limiting rod extends movably into the limiting ring groove and movably fits against the stop block.

[0011] Preferably, connecting pipes are fixedly provided on both the left and right sides of the housing, and connecting flanges are fixedly provided at the ends of the connecting pipes.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. During use, this utility model can prevent the first hollow sealing colloid and the second hollow sealing colloid from rubbing against the inner wall of the shell when the ball rotates, thereby reducing their wear rate. This solves the problem that in existing ball valves, the ball rotates during use and the sealing rubber ring wears down, resulting in poor sealing performance and reduced practicality of the device.

[0014] 2. During use, in the initial state, both the first hollow sealing colloid and the first hollow sealing colloid are in an inflated state, which prevents water from flowing through the connection between the ball and the shell, thereby improving the sealing performance between the ball and the shell and solving the problem that traditional ball valves rely solely on sealing rings to seal the ball valve, resulting in poor sealing performance.

[0015] 3. Because the handle's diameter is larger than the rotating disk and it is located above the rotating disk, the user will unconsciously rotate the handle first, causing the screw to rotate and the piston to move upward. At the same time, it also causes the limiting rod to rotate inside the limiting ring groove. After the limiting rod rotates one revolution, it will be in contact with the stop block again. As the handle is rotated further, the limiting rod pushes the stop block and the rotating disk to rotate, thereby rotating the ball. This causes the first and second hollow sealing colloids to contract before rotating the ball, avoiding the problem of accidentally rotating the rotating disk first, causing the first and second hollow sealing colloids to rotate with the ball in an inflated state. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a ball valve with good sealing performance according to the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of a ball valve with good sealing performance according to the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the power component of this utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the power component of this utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the sphere of this utility model.

[0021] In the diagram: 1. Shell; 2. Connecting pipe; 3. Connecting flange; 4. Fixed cylinder; 5. Rotating rod; 6. Sealing ring; 7. Ball; 8. Water passage hole; 9. Diverting ring groove; 10. First hollow sealing gel; 11. Second hollow sealing gel; 12. Air hole; 13. First branch groove; 14. Second branch groove; 15. Piston; 16. Rotating disk; 17. Screw; 18. Handle; 19. Limiting rod; 20. Limiting ring groove; 21. Stop block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides, for example Figures 1-5 The ball valve shown includes a housing 1, with connecting pipes 2 fixedly installed on both the left and right sides of the housing 1. A connecting flange 3 is fixedly installed at the end of each connecting pipe 2. A ball 7 is rotatably mounted inside the housing 1. A fixed cylinder 4 is fixedly installed at the upper end of the housing 1. A rotating rod 5 is rotatably mounted inside the fixed cylinder 4. The lower end of the rotating rod 5 is fixedly connected to the ball 7. A sealing ring 6 connects the rotating rod 5 and the fixed cylinder 4. A rotating disk 16 is fixedly connected to the upper end of the rotating rod 5. A water passage hole 8 is fixedly opened in the middle of the ball 7. A flow-diverting annular groove 9 is provided inside the ball 7. A first hollow sealing gel 10 is fixedly installed at the bottom of the ball 7. A [missing information - likely a type of sealing material] is fixedly installed at the top of the ball 7. A second hollow sealing colloid 11 is provided, and a reserved hole for the rotating rod 5 to pass through is fixedly opened in the middle of the second hollow sealing colloid 11. The second hollow sealing colloid 11 and the first hollow sealing colloid 10 are respectively movably attached to the upper and lower inner walls of the shell 1. The diversion ring groove 9 is interconnected with the second hollow sealing colloid 11 through the first branch groove 13. The diversion ring groove 9 is interconnected with the second hollow sealing colloid 11 through the second branch groove 14. The top of the sphere 7 is provided with an air hole 12. The upper and lower ends of the air hole 12 are respectively interconnected with the interior of the rotating rod 5 and the diversion ring groove 9. A piston 15 is movably arranged inside the rotating rod 5. A power assembly is arranged between the piston 15 and the rotating disk 16.

[0024] The power assembly includes a threaded hole, which is fixedly opened inside the rotating disk 16. A screw 17 is threadedly connected inside the threaded hole. One end of the screw 17 extends movably into the rotating rod 5 and is rotatably connected to the rotating rod 5. A handle 18 is fixedly connected to the upper end of the screw 17.

[0025] In the initial state during use, both the first hollow sealing colloid 10 and the first hollow sealing colloid 10 are in an inflated state, preventing water from flowing through the connection between the ball 7 and the shell 1, thereby improving the sealing performance between the ball 7 and the shell 1. This solves the problem that traditional ball valves rely solely on the sealing ring 6 to seal the ball valve, resulting in poor sealing performance.

[0026] When the ball 7 needs to be rotated to open or close the ball valve, first turn the handle 18 to rotate the screw 17, which in turn moves the piston 15 upward. The gas inside the first hollow sealing gel 10 and the second hollow sealing gel 11 is drawn into the rotating rod 5, causing the first hollow sealing gel 10 and the second hollow sealing gel 11 to contract. Then, turn the rotating disk 16 to rotate the rotating rod 5 and the ball 7 to open or close the ball valve. After the ball 7 has rotated to its position, turn the handle 18 in the opposite direction to move the piston 15 downward, inflating the first hollow sealing gel 10 and the second hollow sealing gel 11. This prevents water from flowing through the connection between the ball 7 and the housing 1. In this way, when the ball 7 rotates, friction between the first hollow sealing gel 10 and the second hollow sealing gel 11 and the inner wall of the housing 1 can be avoided, reducing their wear rate. This solves the problem that in existing ball valves, the rotation of the ball 7 causes wear on the sealing rubber ring, resulting in poor sealing performance and reduced practicality of the device.

[0027] Furthermore, there are two branches, the first branch groove 13 and the second branch groove 14, symmetrically arranged around the center line of the sphere 7. This arrangement allows the first hollow sealing colloid 10 and the second hollow sealing colloid 11 to contract or expand uniformly.

[0028] To prevent users from accidentally rotating the rotating disk 16 first when using this invention, causing the first hollow sealing gel 10 and the second hollow sealing gel 11 to rotate with the ball 7 in the inflated state, this invention provides an auxiliary component between the handle 18 and the rotating disk 16. The auxiliary component includes a limiting rod 19, which is fixedly installed on the lower surface of the handle 18. A limiting ring groove 20 is fixedly opened inside the rotating disk 16, and a stop block 21 is fixedly installed inside the limiting ring groove 20. The limiting rod 19 extends into the limiting ring groove 20 and is in contact with the stop block 21.

[0029] Specifically, because the diameter of the handle 18 is larger than that of the rotating disk 16 and it is located above the rotating disk 16, the user will unconsciously rotate the handle 18 first, causing the screw 17 to rotate, which in turn causes the piston 15 to move upward. At the same time, it also causes the limiting rod 19 to rotate inside the limiting ring groove 20. After the limiting rod 19 rotates one revolution, it will be in contact with the stop block 21 again. As the handle 18 is rotated further, the limiting rod 19 pushes the stop block 21 and the rotating disk 16 to rotate, thereby rotating the ball 7. This causes the first hollow sealing gel 10 and the second hollow sealing gel 11 to contract before rotating the ball 7, avoiding the problem of accidentally rotating the rotating disk 16 first, which would cause the first hollow sealing gel 10 and the second hollow sealing gel 11 to rotate with the ball 7 in the inflated state.

[0030] After rotating the ball 7 into position, rotate the handle 18 in the opposite direction to reset the limit rod 19.

[0031] Working principle: In the initial state during use, both the first hollow sealing gel 10 and the first hollow sealing gel 11 are in an inflated state, preventing water from flowing through the connection between the ball 7 and the shell 1, thereby improving the sealing between the ball 7 and the shell 1. When it is necessary to rotate the ball 7 to open or close the ball valve, the handle 18 is turned, driving the screw 17 to rotate, which in turn drives the piston 15 to move upward. The gas inside the first hollow sealing gel 10 and the second hollow sealing gel 11 is drawn into the interior of the rotating rod 5, causing the first hollow sealing gel 10 and the second hollow sealing gel 11 to contract and shrink. When the handle 18 is turned, the limiting rod 19 is also driven to rotate inside the limiting ring groove 20. After the limiting rod 19 rotates one revolution, it will be in contact with the stop block 21 again. As the handle 18 is turned, the limiting rod 19 pushes the stop block 21 and the rotating disk 16 to rotate, thereby rotating the ball 7. When the ball 7 is rotated to the correct position, the handle 18 is turned in the opposite direction, which drives the piston 15 to move downward, inflating the first hollow sealing colloid 10 and the second hollow sealing colloid 11, thereby preventing water from flowing through the connection between the ball 7 and the shell 1, and improving the sealing performance of the ball valve. This continues until the limiting rod 19 rotates one revolution and is in contact with the stop block 21 again.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A ball valve with good tightness comprising a housing (1), characterized in that: A sphere (7) is rotatably disposed inside the housing (1). A fixed cylinder (4) is fixedly disposed at the upper end of the housing (1). A rotating rod (5) is rotatably disposed inside the fixed cylinder (4). The lower end of the rotating rod (5) is fixedly connected to the sphere (7). A sealing ring (6) is connected between the rotating rod (5) and the fixed cylinder (4). A rotating disk (16) is fixedly connected to the upper end of the rotating rod (5). A water passage hole (8) is fixedly opened in the middle of the sphere (7). A diversion ring groove (9) is disposed inside the sphere (7). A first hollow sealant is fixedly disposed at the bottom of the sphere (7). The body (10) has a second hollow sealing gel (11) fixedly installed on the top of the sphere (7). The second hollow sealing gel (11) and the first hollow sealing gel (10) are respectively movably attached to the upper and lower inner walls of the shell (1). The diversion ring groove (9) is interconnected with the first branch groove (13) and the second hollow sealing gel (11). The diversion ring groove (9) is interconnected with the second branch groove (14) and the second hollow sealing gel (11). The rotating rod (5) is movably equipped with a piston (15). A power assembly is provided between the piston (15) and the rotating disk (16).

2. A ball valve according to claim 1, wherein: The second hollow sealing colloid (11) has a reserved hole in the middle for the rotating rod (5) to pass through.

3. The ball valve of claim 1, wherein: The first branch channel (13) and the second branch channel (14) are both arranged symmetrically with respect to the center line of the sphere (7).

4. A ball valve according to claim 3, wherein: The top of the sphere (7) is provided with an air hole (12), and the upper and lower ends of the air hole (12) are respectively connected to the interior of the rotating rod (5) and the diversion ring groove (9).

5. A ball valve according to claim 4, wherein: The power assembly includes a threaded hole, which is fixedly opened inside the rotating disk (16). A screw (17) is threadedly connected inside the threaded hole. One end of the screw (17) extends movably into the rotating rod (5) and is rotatably connected to the rotating rod (5). A handle (18) is fixedly connected to the upper end of the screw (17). An auxiliary component is provided between the handle (18) and the rotating disk (16).

6. A ball valve according to claim 5, wherein: The auxiliary component includes a limiting rod (19), which is fixedly disposed on the lower surface of the handle (18). A limiting ring groove (20) is fixedly opened inside the rotating disk (16), and a stop block (21) is fixedly disposed inside the limiting ring groove (20). The limiting rod (19) extends into the limiting ring groove (20) and is in contact with the stop block (21).

7. The ball valve of claim 1, wherein: Connecting pipes (2) are fixedly installed on both the left and right sides of the housing (1), and connecting flanges (3) are fixedly installed at the ends of the connecting pipes (2).

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