Ball valve sealing structure

Abstract

The invention relates to the field of ball valve seats, and discloses a ball valve sealing structure which is characterized in that flange connecting rings are fixedly connected to the opposite ends of valve pipes on the left side and the right side, ball valve bodies are rotationally connected to the upper ends and the lower ends of the inner walls of the flange connecting rings, and fixing plates are fixedly connected to the upper ends of the ball valve bodies. The valve and the inner wall of the valve are slidably connected with an adjusting rod, the inner wall of the bottom end of the adjusting rod is connected with a clamping block through an adjusting assembly, the opposite ends of the clamping block penetrate through the inner wall of the valve, and the top end of an adjusting ring is rotationally connected to the bottom end of the adjusting rod. According to the invention, the valve is limited by the clamping block, so that the valve cannot be mistakenly touched in conventional use, and then the valve body is opened, so that mistakenly touched and touched by workers are effectively prevented, equipment is protected from being damaged by external objects, and the production safety is improved.

Description

Technical Field

[0001] This invention relates to the field of ball valve seats, and more particularly to a ball valve sealing structure. Background Technology

[0002] A ball valve is a type of valve in which the valve stem drives the valve to rotate around the valve axis. It is mainly used to cut off or connect the medium in the pipeline, and can also be used for fluid regulation and control. Ball valves are classified into pneumatic ball valves, electric ball valves, and manual ball valves according to their driving method, and are widely used in industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceutical industry, water conservancy, power, municipal engineering, and steel.

[0003] Currently, after installation, the ball shaft of existing ball valves can usually be directly controlled by the valve to rotate. This often leads to accidental activation during daily operation, which may cause the ball valve to unexpectedly change from the closed state to the open state. This may cause fluid runaway, leakage or unexpected flow, and thus cause safety accidents.

[0004] In response to the technical problem of accidental activation of the ball valve, this application proposes a ball valve sealing structure. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a ball valve sealing structure. The valve is limited by a locking block, ensuring that the valve cannot be accidentally touched during normal use, thereby preventing the valve body from being opened. This effectively prevents workers from accidentally touching or activating the valve, protects the equipment from damage by external objects, and improves production safety.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A ball valve sealing structure, comprising: The valve tube has a flange connecting ring fixedly connected to one end of the valve tube on both the left and right sides. The upper and lower ends of the inner wall of the flange connecting ring are rotatably connected to the ball valve body. The upper end of the ball valve body is fixedly connected to a fixing plate. The outer wall of the fixing plate is connected to a sealing ring through an expansion assembly. The sealing rings are slidably connected to the inner wall of the valve tube. The expansion assembly includes an adjusting ring slidably connected to the bottom end of the outer wall of the fixing plate. The left and right sides of the adjusting ring are rotatably connected to connecting rods. The valve has an adjusting rod slidably connected to its inner wall. The bottom inner wall of the adjusting rod is connected to a locking block via an adjusting assembly. The opposite ends of the locking blocks both penetrate the inner wall of the valve. The top of the adjusting ring is rotatably connected to the bottom of the adjusting rod. The outer wall of the valve is rotatably connected to the inner wall of the top of the flange connecting ring. The adjusting assembly includes telescopic frames that are fixedly connected to both sides of the bottom inner wall of the adjusting rod. The bottom of the telescopic frames is fixedly connected to the top of the fixed plate. The opposite ends of the telescopic frames are rotatably connected to a connecting block.

[0007] Furthermore, the top of the sealing rings is rotatably connected to the opposite ends of the connecting rod, and the opposite ends of the sealing rings are fixedly connected to the first springs, the other ends of the first springs are fixedly connected to the opposite ends of the inner wall of the valve tube.

[0008] Furthermore, a second spring is fixedly connected to one end of the connecting block, and the locking block is fixedly connected to the opposite end of the connecting block.

[0009] Furthermore, the flange connecting ring has slots on all four sides of the inner wall at the top, and the shape and size of the slots are matched with the opposite end of the locking block.

[0010] Furthermore, an anti-slip block is provided on the outer wall of the top of the regulating rod so that the rotation of the valve can better drive the regulating rod to rotate and prevent slippage between the valve and the regulating rod.

[0011] Furthermore, the top of the fixed plate is in the shape of a straight line, and the opening at the bottom of the adjusting rod matches the shape of the top of the fixed plate.

[0012] The present invention has the following beneficial effects: In this invention, the valve is limited by a locking block, preventing it from being opened during normal use. The valve can only be rotated by pressing down the adjusting rod, which effectively prevents workers from accidentally touching or activating the valve, protects the equipment from damage by external objects, and improves production safety.

[0013] In this invention, the sealing ring can disengage from the release surface when the ball valve rotates, and can re-adhere to the ball valve under the action of the first spring after rotation is completed, thereby reducing the wear of the sealing ring, ensuring its working effect and time, and thus improving the sealing effect and service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the valve pipe cross-section structure of a ball valve sealing structure proposed in this invention; Figure 2 This is a perspective view of a ball valve sealing structure proposed in this invention; Figure 3 This is a schematic diagram of the sealing ring structure of a ball valve sealing structure proposed in this invention; Figure 4 This is a schematic diagram of a ball valve sealing structure proposed in this invention; Figure 5 This is a schematic diagram of the valve cross-section structure of a ball valve sealing structure proposed in this invention; Figure 6 This is a schematic diagram of the adjusting rod structure of a ball valve sealing structure proposed in this invention; Figure 7 for Figure 6 Schematic diagram of the structure at point A in the middle.

[0015] Legend: 1. Flange connecting ring; 2. Valve pipe; 3. Valve; 4. Adjusting rod; 5. Ball valve body; 6. Sealing ring; 7. First spring; 8. Adjusting ring; 9. Connecting rod; 10. Fixing plate; 11. Connecting block; 12. Second spring; 13. Telescopic frame; 14. Locking block; 15. Locking groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Reference Figures 2-4 An embodiment of the present invention provides a ball valve sealing structure, including a valve pipe 2. A flange connecting ring 1 is fixedly connected to one end of the valve pipe 2 on both the left and right sides. A ball valve body 5 is rotatably connected to both the upper and lower ends of the inner wall of the flange connecting ring 1. A fixing plate 10 is fixedly connected to the upper end of the ball valve body 5. A sealing ring 6 is provided on the outer wall of the fixing plate 10. The sealing ring 6 is slidably connected to the inner wall of the valve pipe 2. An adjusting ring 8 is slidably connected to the bottom end of the outer wall of the fixing plate 10. A connecting rod 9 is rotatably connected to both the left and right sides of the adjusting ring 8. The top of the opposite end of the sealing ring 6 is rotatably connected to the opposite end of the connecting rod 9. A first spring 7 is fixedly connected to the opposite end of the sealing ring 6. The other end of the first spring 7 is fixedly connected to the opposite end of the inner wall of the valve pipe 2.

[0018] Specifically, pressing valve 3 will cause adjusting ring 8 to move downwards. The movement of adjusting ring 8 will cause connecting rods 9 on both sides to expand, thereby detaching the sealing ring 6 from the surface of ball valve body 5. At this time, the first spring 7 will be compressed. The rotation of ball valve body 5 will not rub against sealing ring 6, thereby reducing wear on sealing ring 6 and ensuring its effectiveness. After rotation, adjusting rod 4 will be released. At this time, the first spring 7 will push sealing ring 6 against ball valve body 5 and press it tightly against ball valve body 5, thereby ensuring the sealing of the pipeline. At this time, connecting rod 9 will be lifted again and adjusting ring 8 will be reset.

[0019] Reference Figure 1 , Figure 5 and Figure 6Valve 3 has an adjusting rod 4 slidably connected to its inner wall. A locking block 14 is located on the inner wall of the bottom end of the adjusting rod 4, with opposite ends of the locking blocks 14 penetrating the inner wall of valve 3. The top of an adjusting ring 8 is rotatably connected to the bottom end of the adjusting rod 4. The outer wall of valve 3 is rotatably connected to the inner wall of the top of the flange connecting ring 1. Telescopic frames 13 are fixedly connected to both sides of the inner wall of the bottom end of the adjusting rod 4. The bottom ends of the telescopic frames 13 are fixedly connected to the top of the fixed plate 10. A connecting block 11 is rotatably connected to opposite ends of each telescopic frame 13, with opposite ends of the connecting blocks 11 fixedly connected... A second spring 12 is connected to the flange connecting ring 11. The two ends of the locking blocks 14 are fixedly connected to the opposite ends of the connecting blocks 11. The flange connecting ring 1 has four slots 15 on the inner wall of the top. The shape and size of the slots 15 are matched with the opposite ends of the locking blocks 14. The outer wall of the top of the adjusting rod 4 is provided with an anti-slip block so that the rotation of the valve 3 can better drive the adjusting rod 4 to rotate and prevent slippage between the valve 3 and the adjusting rod 4. The top of the fixing plate 10 is in the shape of a straight line, and the bottom opening of the adjusting rod 4 matches the shape of the top of the fixing plate 10.

[0020] Specifically, to release the lower limit of valve 3, press the adjusting rod 4 downwards, as shown in the following example. Figure 7 At this time, with the cooperation of the adjusting rod 4 and the fixed plate 10, the telescopic frame 13 will be compressed, which will drive the connecting block 11 to move inward to one side. At this time, the locking block 14 will be disengaged from the locking groove 15 and retracted into the valve 3. At this time, the limit between the valve 3 and the flange connecting ring 1 will be released. At this time, rotating the valve 3 will drive the adjusting rod 4 to rotate. The adjusting rod 4 acts as a medium to rotate the fixed plate 10, thereby rotating the ball valve body 5, thereby controlling the opening and closing of the valve body. After the rotation is completed, the locking block 14 will coincide with the locking groove 15 on the other side. At this time, the adjusting rod 4 will be released and lifted by the reaction force of the second spring 12. The locking block 14 will be re-locked into the locking groove 15. At this time, the valve 3 will be re-locked, thus preventing accidental activation.

[0021] Working principle: After the valve body is installed in the pipeline, it will be in the closed state. Pressing the adjusting rod 4 downwards will compress the telescopic frame 13 and retract the connecting block 11 inwards, thus retracting the locking block 14 and releasing the overall limit of the valve 3. Rotating the valve 3 will then cause the adjusting rod 4 to rotate, which in turn will rotate the ball valve body 5, opening it. The downward movement of the adjusting rod 4 will cause the adjusting ring 8 to move downwards, expanding the connecting rod 9 to both sides. Zhang will cause the sealing rings 6 on both sides to disengage from the ball valve body 5 and compress the first spring 7, thereby reducing rotational friction and ensuring the working condition of the sealing rings 6. After rotation, the adjusting rod 4 will be released. At this time, the adjusting rod 4 will be lifted upward under the action of the second spring 12, which will re-clamp the locking block 14 into the flange connecting ring 1. The sealing rings 6 will be tightly pressed against the ball valve body 5 under the reaction force of the first spring 7, thus ensuring the sealing of the valve body. The adjusting ring 8 will be reset under the action of the adjusting rod 4 and the connecting rod 9, thus ensuring the next rotation.

[0022] Finally, it should be noted that the above description 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ball valve sealing structure, characterized in that, include: A valve pipe (2) is fixedly connected to a flange connecting ring (1) at one end on both sides of the valve pipe (2). A ball valve body (5) is rotatably connected to both the upper and lower ends of the inner wall of the flange connecting ring (1). A fixing plate (10) is fixedly connected to the upper end of the ball valve body (5). A sealing ring (6) is connected to the outer wall of the fixing plate (10) through an expansion assembly. The sealing ring (6) is slidably connected to the inner wall of the valve pipe (2). The expansion assembly includes an adjusting ring (8) slidably connected to the bottom end of the outer wall of the fixing plate (10). A connecting rod (9) is rotatably connected to both the left and right sides of the adjusting ring (8). The valve (3) has an adjusting rod (4) slidably connected to its inner wall. The bottom inner wall of the adjusting rod (4) is connected to a locking block (14) via an adjusting assembly. The opposite ends of the locking blocks (14) penetrate the inner wall of the valve (3). The top end of the adjusting ring (8) is rotatably connected to the bottom end of the adjusting rod (4). The outer wall of the valve (3) is rotatably connected to the top inner wall of the flange connecting ring (1). The adjusting assembly includes a telescopic frame (13) fixedly connected to both sides of the bottom inner wall of the adjusting rod (4). The bottom end of the telescopic frame (13) is fixedly connected to the top end of the fixed plate (10). The opposite ends of the telescopic frame (13) are rotatably connected to a connecting block (11).

2. The ball valve sealing structure according to claim 1, characterized in that: The sealing rings (6) are rotatably connected to the opposite ends of the connecting rod (9) at their respective top ends. The opposite ends of the sealing rings (6) are fixedly connected to the first springs (7), and the other ends of the first springs (7) are fixedly connected to the opposite ends of the inner wall of the valve tube (2).

3. The ball valve sealing structure according to claim 1, characterized in that: The connecting block (11) is fixedly connected to a second spring (12) at one end, and the locking block (14) is fixedly connected to the opposite end of the connecting block (11) at one end.

4. The ball valve sealing structure according to claim 1, characterized in that: The flange connecting ring (1) has slots (15) on all four sides of the inner wall at the top. The shape and size of the slots (15) are matched with the opposite end of the block (14).

5. The ball valve sealing structure according to claim 1, characterized in that: The top outer wall of the adjusting rod (4) is provided with an anti-slip block so that the rotation of the valve (3) can better drive the adjusting rod (4) to rotate, and prevent slippage between the valve (3) and the adjusting rod (4).

6. The ball valve sealing structure according to claim 1, characterized in that: The top of the fixing plate (10) is in the shape of a straight line, and the bottom opening of the adjusting rod (4) matches the shape of the top of the fixing plate (10).

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