High-sealing anti-static ball valve

Abstract

The utility model relates to the technical field of valves, in particular to a high-sealing anti-static ball valve which comprises a valve body, a valve element and a valve rod, the valve element and the valve rod are rotationally arranged on the valve body, the valve element and the valve rod are connected together, and a discharging device used for releasing static electricity generated by the valve body, the valve element and the valve rod is arranged on the valve body. The moving mechanism is used for driving the conductive block to make contact with the valve rod, then the grounded discharging chain is arranged on the valve rod, and therefore static electricity generated due to friction between fluid and the inner wall of the valve body can be transmitted to the valve rod, and static electricity generated due to friction between the fluid and a valve element can also be transmitted to the valve rod; the valve rod transmits the static electricity to the discharging chain in a unified mode, the discharging chain guides the static electricity to the ground, and therefore the work of discharging the static electricity in the ball valve is completed, and the probability that the static electricity causes adverse effects on work of the ball valve is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and in particular to a high-sealing anti-static ball valve. Background Art

[0002] A ball valve is a type of valve that is mainly used to control the flow of fluid in a pipeline. Its working principle is to rotate a spherical valve body with a hole. When the hole is aligned with the pipeline, the fluid can pass freely; when the hole is misaligned with the pipeline, the fluid flow is blocked, thereby realizing the opening and closing of the fluid. Ball valves have the characteristics of simple structure, good sealing performance, easy operation, wide application range, corrosion resistance and wear resistance, and two-way flow. They are widely used in chemical, petroleum, natural gas, water treatment, food, pharmaceutical and other industries.

[0003] In the related art, reference may be made to the Chinese utility model patent with the authorization announcement number CN209469818U, which discloses a ball valve and a ball valve assembly thereof. A ball valve includes a valve body, a valve core and a valve stem, the outer wall of the valve body is provided with a convex portion, the valve core is arranged in the valve body, one end of the valve stem is connected to the valve core, and the other end passes through the convex portion, the ball valve also includes a limit cover, a locking mechanism and a limit structure, one end of the valve stem passing through the convex portion is connected to the limit cover, the limit cover can rotate relative to the convex portion, a locking hole is provided on the limit cover, and the locking mechanism is arranged between the limit cover and the convex portion to cooperate with the locking hole; the limit structure is arranged on the convex portion to limit the rotation angle of the limit cover relative to the convex portion.

[0004] However, during the use of the above ball valve, friction will occur between the fluid and the inner wall of the valve body, between the fluids, and between the fluid and the valve core, and this friction can generate static electricity. Especially in the case of fluids with high resistivity (such as certain oils, solvents, etc.), static electricity is more likely to accumulate. When static electricity accumulates to a certain extent, the sparks generated by static electricity discharge may ignite flammable and explosive media, causing fire or explosion, posing a serious threat to personnel and equipment. Utility Model Content

[0005] In order to reduce the probability of static electricity adversely affecting the operation of the ball valve, the present application provides a high-sealing anti-static ball valve.

[0006] The present application provides a high-seal anti-static ball valve, which adopts the following technical solution:

[0007] A high-sealing anti-static ball valve comprises a valve body, a valve core and a valve stem rotatably arranged on the valve body, the valve core and the valve stem are connected together, and a discharge device for discharging static electricity generated by the valve body, the valve core and the valve stem is arranged on the valve body, and the discharge device comprises:

[0008] A discharge chain, one end of which is connected to the valve stem, and the other end of which is in contact with the ground;

[0009] A conductive block, which is horizontally slidably arranged on the valve body and abuts against the outer side wall of the valve stem;

[0010] A moving mechanism, which is arranged on the valve body and is used to control the movement of the conductive block.

[0011] By adopting the above technical solution, the moving mechanism is used to drive the conductive block to contact the valve stem, and then a grounded discharge chain is arranged on the valve stem, so that the static electricity generated by the friction between the fluid and the inner wall of the valve body will be transmitted to the valve stem, and the static electricity generated by the friction between the fluid and the valve core will also be transmitted to the valve stem. The valve stem transmits this static electricity to the discharge chain uniformly, and the discharge chain guides the static electricity to the ground, thus completing the work of discharging the static electricity in the ball valve and reducing the probability that the static electricity has an adverse effect on the operation of the ball valve.

[0012] Optionally, the moving mechanism includes:

[0013] A moving block, a horizontal sliding groove is provided on the inner side wall of the valve body where the valve stem is installed, the moving block is slidably installed on the sliding groove, and the conductive block is rotatably installed on the moving block and abuts against the outer side wall of the valve stem;

[0014] A moving spring, one end of the moving spring is arranged on the inner bottom wall of the sliding groove, the other end of the moving spring is connected to the moving block, and the moving block drives the conductive block to abut against the valve stem under the action of the moving spring.

[0015] By adopting the above technical solution, the moving spring and the moving block are arranged in the sliding groove, the conductive block is rotatably clamped on the moving block, and the moving block drives the conductive block to abut against the valve stem under the action of the moving spring, thus completing the conductive work between the valve body and the valve stem. At the same time, since the conductive block itself is also rotatable, the rotation of the valve stem will not be interfered when the conductive block abuts against the valve stem.

[0016] Optionally, an arc-shaped contact surface is provided on the side wall of the conductive block in contact with the valve stem.

[0017] By adopting the above technical solution, an arc-shaped contact surface is provided on the side wall of the conductive block in contact with the valve stem, so that while ensuring the contact between the conductive block and the valve stem, the friction force between the contact surfaces of the conductive block and the valve stem is reduced, thus ensuring that the valve stem can rotate normally.

[0018] Optionally, a connecting mechanism is arranged on the valve stem, the discharge chain is detachably connected to the valve stem through the connecting mechanism, and the connecting mechanism includes:

[0019] A connecting hook, a rotating handle is arranged on the valve stem, a through hole vertically penetrating through the thickness of the rotating handle is formed on the rotating handle, the connecting hook is rotatably arranged on the rotating handle, and when the connecting hook rotates to be entirely located within the through hole, the connecting hook abuts against the inner side wall of the through hole;

[0020] A connecting ring, the connecting ring is arranged on the discharge chain and hung on the connecting hook;

[0021] A limiting component, the limiting component is arranged on the rotating handle and limits the position of the connecting hook when it is within the through hole.

[0022] By adopting the above technical solution, when the rotating connecting hook rotates out of the through hole, the discharge chain can be moved to hang the connecting ring on the connecting hook. After the discharge chain hangs on the connecting hook through the connecting ring, the rotating connecting hook is moved into the through hole and limited by the limiting component, thus completing the connection work between the discharge chain and the rotating handle; by unlocking the limiting component, the connecting hook can be rotated out of the through hole, and then the connecting ring is removed to replace the discharge chain, so that the length of the discharge chain can be adjusted and replaced according to the specific working scenario of the valve body, improving the adaptability of the overall ball valve in different working scenarios.

[0023] Optionally, the limiting component includes:

[0024] A limiting block, a horizontal limiting groove is formed on the inner side of the through hole, and the limiting block is slidably installed in the limiting groove;

[0025] A limiting spring, the limiting spring is arranged on the bottom wall of the limiting groove and connected to the limiting block, and the limiting block partially protrudes out of the limiting groove under the action of the limiting spring and abuts against the connecting hook.

[0026] By adopting the above technical solution, when the entire connecting hook is located within the through hole, the limiting block partially protrudes out of the limiting groove under the action of the limiting spring and abuts against the connecting hook, thereby limiting the connecting hook within the through hole; when the discharge chain needs to be replaced, the limiting block is squeezed to compress the limiting spring and move until the entire limiting block enters the limiting groove, then the limiting block is separated from the connecting hook, and the connecting hook rotates out of the through hole under the action of gravity. After the connecting hook rotates out of the through hole, the connecting ring can be moved to replace the discharge chain.

[0027] Optionally, an arc-shaped guiding surface is formed on the bottom surface of the part of the limiting block protruding out of the limiting groove.

[0028] By adopting the above technical solution, an arc-shaped guiding surface is provided on the bottom surface of the part of the limiting block extending out of the limiting groove. When the rotating connecting hook is moved into the through hole, the connecting hook will first contact the guiding surface on the limiting block, and the guiding surface will generate a component force that drives the limiting block into the limiting groove, thus eliminating the need for manual extrusion of the limiting block into the limiting groove, simplifying the working steps, and saving time and effort.

[0029] Optionally, a counterweight base is provided at the bottom of the discharge chain, and the counterweight base is in contact with the ground.

[0030] By adopting the above technical solution, a counterweight base is installed at the bottom end of the discharge chain, so that the counterweight base increases the contact area between the discharge chain and the ground, improves the conductive effect, and the position of the discharge chain is more stable under the action of the counterweight base, making the discharge chain not easily move under the action of other external forces, and making the discharge work of the discharge chain more stable.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. By using the moving mechanism to drive the conductive block to contact the valve stem, and then arranging a grounded discharge chain on the valve stem, the static electricity generated by the friction between the fluid and the inner wall of the valve body will be transmitted to the valve stem, and the static electricity generated by the friction between the fluid and the valve core will also be transmitted to the valve stem. The valve stem uniformly transmits this static electricity to the discharge chain, and the discharge chain guides the static electricity to the ground, thus completing the work of discharging the static electricity in the ball valve and reducing the probability of adverse effects of static electricity on the operation of the ball valve;

[0033] 2. By arranging a moving spring and a moving block in the sliding groove, the conductive block rotates and presses on the moving block, and the moving block drives the conductive block to abut against the valve stem under the action of the moving spring, thus completing the conductive work between the valve body and the valve stem. At the same time, since the conductive block itself also rotates, the rotation of the valve stem will not be interfered when the conductive block abuts against the valve stem;

[0034] 3. By installing a counterweight base at the bottom end of the discharge chain, the counterweight base increases the contact area between the discharge chain and the ground, improves the conductive effect, and the position of the discharge chain is more stable under the action of the counterweight base, making the discharge chain not easily move under the action of other external forces, and making the discharge work of the discharge chain more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0036] Figure 2 is a structural schematic diagram of the discharge device and the connecting mechanism in the present application, in which the side walls of the valve body and the rotating handle are sectioned;

[0037] Figure 3 is Figure 2 An enlarged schematic view of part A in

[0038] Reference numerals: 1, valve body; 11, valve core; 12, valve stem; 13, rotating handle; 14, through hole; 15, counterweight base; 2, discharge device; 21, discharge chain; 22, conductive block; 23, moving mechanism; 24, moving block; 25, moving spring; 26, contact surface; 3, connecting mechanism; 31, connecting hook; 32, connecting ring; 33, limiting component; 34, limiting block; 35, limiting spring; 36, limiting groove; 37, guiding surface. Specific embodiments

[0039] The following will Figure 1 - attached Figure 3 make a further detailed description of the present application.

[0040] The embodiment of the present application discloses a high-sealing anti-static ball valve.

[0041] Referring to Figure 1 , the high-sealing anti-static ball valve includes a valve body 1, a valve core 11 and a valve stem 12 rotatably installed on the valve body 1, and the valve core 11 and the valve stem 12 are fixedly connected together. A discharge device 2 for discharging static electricity generated by the valve body 1, the valve core 11 and the valve stem 12 is provided on the valve body 1.

[0042] Referring to Figure 1 and Figure 2 , a rotating handle 13 is fixedly installed at the top of the valve stem 12, and a through hole 14 vertically penetrating the thickness of the rotating handle 13 is opened on the upper surface of the rotating handle 13. The discharge device 2 includes a discharge chain 21, a conductive block 22 and a moving mechanism 23. A connecting mechanism 3 is provided on the rotating handle 13, and the top end of the discharge chain 21 is detachably connected to the rotating handle 13 through the connecting mechanism 3. A counterweight base 15 is fixedly installed at the bottom end of the discharge chain 21, and the counterweight base 15 is in contact with the ground.

[0043] Referring to Figure 2 and Figure 3 , the connecting mechanism 3 includes a connecting hook 31, a connecting ring 32 and a limiting component 33. The connecting hook 31 is rotatably installed on the rotating handle 13 and is located in the through hole 14. The connecting ring 32 is fixedly installed at the top end of the discharge chain 21 and is hung on the connecting hook 31. The limiting component 33 is provided on the rotating handle 13 and limits the position of the connecting hook 31 when it is in the through hole 14.

[0044] Referring to Figure 2 and Figure 3, the limiting component 33 includes a limiting block 34 and a limiting spring 35. A horizontal limiting groove 36 is formed on the inner side wall of the through hole 14, and the limiting block 34 is slidably installed in the limiting groove 36. The limiting spring 35 is fixedly installed on the inner bottom wall of the limiting groove 36 and is connected to the limiting block 34. The limiting block 34 partially protrudes out of the limiting groove 36 under the action of the limiting spring 35 and abuts against the connecting hook 31. An arc-shaped guiding surface 37 is formed on the bottom surface of the part of the limiting block 34 protruding out of the limiting groove 36.

[0045] Referring to Figure 2 and Figure 3 , when the whole connecting hook 31 is located inside the through hole 14, the limiting block 34 partially protrudes out of the limiting groove 36 under the action of the limiting spring 35 and abuts against the connecting hook 31, thereby limiting the connecting hook 31 inside the through hole 14. When it is necessary to replace the discharge chain 21, the limiting block 34 is squeezed to compress the limiting spring 35 and move until the whole limiting block 34 enters the limiting groove 36. Then the limiting block 34 is separated from the connecting hook 31, and the connecting hook 31 rotates out of the through hole 14 under the action of gravity. After the connecting hook 31 rotates out of the through hole 14, the connecting ring 32 can be moved to replace the discharge chain 21.

[0046] Referring to Figure 2 and Figure 3 , a horizontal sliding groove is formed on the inner side wall of the valve body 1 for installing the valve stem 12, and the conductive block 22 is horizontally slidably arranged on the sliding groove through a moving mechanism 23 and abuts against the outer side wall of the valve stem 12. The moving mechanism 23 includes a moving block 24 and a moving spring 25. The moving block 24 is horizontally slidably installed on the sliding groove. One end of the moving spring 25 is arranged on the inner bottom wall of the sliding groove, and the other end of the moving spring 25 is connected to the moving block 24. The conductive block 22 is rotatably installed on the side wall of the moving block 24 close to the valve stem 12. The moving block 24 drives the conductive block 22 to abut against the valve stem 12 under the action of the moving spring 25. An arc-shaped contact surface 26 is formed on the side wall of the conductive block 22 in contact with the valve stem 12.

[0047] Referring to Figure 1 and Figure 2 , the static electricity generated by the friction between the fluid and the inner wall of the valve body 1 will be transmitted to the valve stem 12 through the moving block 24 and the conductive block 22. The static electricity generated by the friction between the fluid and the valve core 11 will be directly transmitted to the valve stem 12. The valve stem 12 uniformly transmits these static electricity to the discharge chain 21, and the discharge chain 21 guides the static electricity to the ground through the counterweight base 15, thereby completing the work of discharging the static electricity inside the ball valve and reducing the probability of the static electricity having an adverse effect on the operation of the ball valve.

[0048] The working principle of the embodiment of the present application is as follows:

[0049] Drive the conductive block 22 to contact the valve stem 12 by moving the spring 25, and then install a grounded discharge chain 21 on the valve stem 12. As a result, the static electricity generated by friction between the fluid and the inner wall of the valve body 1 will be transferred to the valve stem 12, and the static electricity generated by friction between the fluid and the valve core 11 will also be transferred to the valve stem 12. The valve stem 12 uniformly transfers this static electricity to the discharge chain 21, and the discharge chain 21 guides the static electricity to the ground, thus completing the work of discharging the static electricity in the ball valve and reducing the probability of adverse effects of static electricity on the operation of the ball valve.

[0050] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A high-sealing anti-static ball valve, characterized by: The invention comprises a valve body (1), a valve core (11) and a valve stem (12) rotatably arranged on the valve body (1), wherein the valve core (11) and the valve stem (12) are connected together, and a discharge device (2) is arranged on the valve body (1) for discharging static electricity generated by the valve body (1), the valve core (11) and the valve stem (12), wherein the discharge device (2) comprises: A discharge chain (21), one end of the discharge chain (21) is connected to the valve stem (12), and the other end of the discharge chain (21) is in contact with the ground; A conductive block (22), the conductive block (22) being horizontally slidably disposed on the valve body (1) and abutting against an outer side wall of the valve stem (12); A moving mechanism (23), wherein the moving mechanism (23) is arranged on the valve body (1) and is used to control the movement of the conductive block (22).

2. A high-sealing anti-static ball valve according to claim 1, characterized in that: The moving mechanism (23) comprises: A moving block (24), wherein a horizontal sliding groove is provided on the inner side wall of the valve body (1) on which the valve stem (12) is mounted, the moving block (24) is slidingly mounted on the sliding groove, and the conductive block (22) is rotatably mounted on the moving block (24) and contacts the outer side wall of the valve stem (12); A moving spring (25), one end of which is arranged on the bottom wall of the sliding groove, and the other end of which is connected to the moving block (24). Under the action of the moving spring (25), the moving block (24) drives the conductive block (22) to contact the valve stem (12).

3. A high-sealing anti-static ball valve according to claim 2, characterized in that: A circular arc-shaped contact surface (26) is provided on the side wall of the conductive block (22) that contacts the valve stem (12).

4. A high-sealing anti-static ball valve according to claim 1, characterized in that: The valve stem (12) is provided with a connecting mechanism (3), and the discharge chain (21) is detachably connected to the valve stem (12) via the connecting mechanism (3), wherein the connecting mechanism (3) comprises: A connecting hook (31), wherein a rotating handle (13) is arranged on the valve stem (12), and a through hole (14) is provided on the rotating handle (13) and vertically penetrates the thickness of the rotating handle (13), and the connecting hook (31) is rotatably arranged on the rotating handle (13), and when the connecting hook (31) is rotated until the entirety is located in the through hole (14), the connecting hook (31) abuts against the inner wall of the through hole (14); A connecting ring (32), wherein the connecting ring (32) is arranged on the discharge chain (21) and is hung on the connecting hook (31); A limiting component (33) is arranged on the rotating handle (13) and limits the position of the connecting hook (31) when it is in the through hole (14).

5. A high-sealing anti-static ball valve according to claim 4, characterized in that: The limiting component (33) comprises: A limit block (34), wherein a horizontal limit groove (36) is provided on the inner side wall of the through hole (14), and the limit block (34) is slidably installed in the limit groove (36); A limit spring (35), wherein the limit spring (35) is arranged on the inner bottom wall of the limit groove (36) and connected to the limit block (34); under the action of the limit spring (35), the limit block (34) partially passes out of the limit groove (36) and contacts the connecting hook (31).

6. A high-sealing anti-static ball valve according to claim 5, characterized in that: An arc-shaped guide surface (37) is provided on the bottom surface of the portion of the limiting block (34) extending outside the limiting groove (36).

7. The high-sealing anti-static ball valve according to claim 1 is characterized in that: A counterweight base (15) is provided at the bottom of the discharge chain (21), and the counterweight base (15) is in contact with the ground.

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