Ball valve with damping function

Abstract

The utility model relates to the technical field of valves, and discloses a ball valve with a damping function, the ball valve comprises a valve body, a valve core rotatably arranged in the valve body and a valve rod connected to the valve core, the valve rod comprises an insertion part, the valve core is provided with an insertion groove for the insertion part to extend in, the insertion part is provided with a damping spring, and the valve rod is connected with the valve core. The damping springs are connected with damping blocks, and the damping blocks abut against the groove walls of the inserting grooves. The damping spring and the damping block are arranged on the valve rod, so that vibration and noise generated when the ball valve works can be effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and in particular to a ball valve with a shock-absorbing function. Background Art

[0002] A ball valve is a valve whose opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. It is mainly used for fluid regulation and control. Its working principle is that when the ball rotates 90 degrees, the inlet and outlet should all present spherical surfaces, thereby closing the valve and cutting off the flow of the medium; and when the ball rotates back 90 degrees, the inlet and outlet should all present ball mouths, thereby opening the valve and allowing the medium to circulate.

[0003] In related technologies, a ball valve generally includes a valve body, a valve core rotatably arranged in the valve body, and a valve stem connected to the valve core. The valve stem is usually connected to the valve core by plugging. When the valve stem rotates, the valve core will rotate relative to the valve body to realize the opening and closing of the flow channel.

[0004] However, during use of the above ball valve, the valve stem is likely to move relative to the valve core when subjected to vibration, resulting in poor shock absorption effect. Utility Model Content

[0005] In order to enhance the shock absorption effect of the ball valve during use, the present application provides a ball valve with a shock absorption function.

[0006] The ball valve with shock absorption function provided in this application adopts the following technical solution:

[0007] A ball valve with a shock-absorbing function comprises a valve body, a valve core rotatably arranged in the valve body, and a valve stem connected to the valve core, wherein the valve stem comprises a plug-in portion, the valve core is provided with a plug-in groove for the plug-in portion to extend into, the plug-in portion is provided with a shock-absorbing spring, and a shock-absorbing block is provided at one end of the shock-absorbing spring away from the plug-in portion, and the shock-absorbing block abuts against the groove wall of the plug-in groove.

[0008] By adopting the above technical solution, when the ball valve is subjected to vibration, the shock-absorbing spring plays a role of buffering and shock absorption, so that the valve stem and the valve core are not easy to move relative to each other, the buffering and shock absorption effect is good, and the ball valve is not easy to generate noise due to collision between the valve stem and the valve core when working.

[0009] Optionally, a mounting groove is provided on the plug-in portion, and the shock-absorbing spring is arranged in the mounting groove.

[0010] By adopting the above technical solution, the groove wall of the installation groove can prevent the shock-absorbing spring from being easily deformed in a direction perpendicular to its own expansion and contraction, thereby reducing the possibility of the shock-absorbing spring's elasticity being weakened due to excessive deformation.

[0011] Optionally, the shock-absorbing block is spherical.

[0012] By adopting the above technical solution, when the valve stem or valve core is vibrated, the spherical shock-absorbing block can move relative to the groove wall of the plug-in groove to dissipate the impact force generated by the vibration, thereby further enhancing the shock absorption performance of the ball valve.

[0013] Optionally, the valve stem also includes a rotating part and an anti-slip part integrally formed on the rotating part, the anti-slip part is located between the rotating part and the plug-in part, the inner wall of the valve body is provided with an anti-slip groove for the anti-slip part to extend into, and the groove wall of the anti-slip groove away from the valve core is provided with a through hole for the rotating part to rotate through, and the inner diameter of the through hole is smaller than the diameter of the anti-slip part.

[0014] By adopting the above technical solution, the valve stem of a traditional ball valve generally penetrates the valve body from the outside to the inside, which can cause the valve stem to be accidentally pulled out during operation. By setting the diameter of the anti-slip portion to be larger than the inner diameter of the through-hole, the valve stem can be passed out of the valve body from the inside to the outside. When the valve stem is installed in the valve body, the anti-slip portion is located in the anti-slip groove, preventing the valve stem from being pulled out of the valve body, thereby achieving the purpose of preventing flying.

[0015] Optionally, a detachable handle is provided on the valve stem, and the handle is located on the outside of the valve body.

[0016] By adopting this technical solution, the operator can control the rotation of the valve stem through the handle externally, thereby rotating the valve core relative to the valve body, thereby opening and closing the ball valve. The handle is detachably mounted on the valve stem, allowing it to be removed from the valve stem without rotating the valve stem, allowing it to be used to open and close other ball valves, providing simple operation.

[0017] Optionally, a non-circular through hole is provided on the handle, the valve stem is passed through the through hole, a connecting screw hole is provided at one end of the valve stem away from the valve core, a connecting bolt is threadedly connected in the connecting screw hole, a gasket is provided on the outer side of the connecting bolt, and the outer diameter of the gasket is greater than the width of the through hole.

[0018] By adopting this technical solution, when installing the handle, first insert the valve stem into the through-hole, then fit the gasket over the outer side of the connecting bolt, and then thread the connecting bolt into the connecting screw hole to achieve relative fixation between the handle and the valve stem, allowing the handle to control the rotation of the valve stem. The handle and valve stem are detachably connected by the connecting bolt, achieving a strong and stable connection. When power is required, this connection method eliminates the need to drill holes in the flange, compared to the traditional method of connecting wires to the valve body flange, helping to simplify the ball valve production process and improve work efficiency.

[0019] Optionally, a guide hole for medium circulation is provided in the valve body, a positioning groove connected to the guide hole is provided on the inner wall of the valve body, a sealing ring is provided in the positioning groove, the sealing ring is abutted between the valve body and the valve core, and the sealing ring is a polytetrafluoroethylene ring.

[0020] By adopting this technical solution, the sealing ring can prevent the medium from penetrating the gap between the valve body and the valve core through the guide hole, achieving a good sealing effect. Polytetrafluoroethylene is characterized by its high temperature resistance and strong acid and alkali resistance. Using this material to make the sealing ring helps improve its corrosion resistance and extend its service life.

[0021] Optionally, an extension ring is integrally formed on the groove wall of the positioning groove, and the extension ring is located inside the sealing ring.

[0022] By adopting the above technical solution, the extension ring can prevent the sealing ring from deforming toward the inner side of the guide hole, thereby reducing the risk of the medium penetrating into the gap between the valve body and the valve core, and achieving a good sealing effect.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the valve stem or valve core is vibrated, the shock-absorbing spring can buffer the impact force generated by the vibration, with good shock absorption effect and low working noise;

[0025] 2. When the valve stem is subjected to outward force during use, the valve stem will not separate from the valve body because the diameter of the anti-slip portion is larger than the inner diameter of the through hole, and the anti-flying effect is good;

[0026] 3. The handle and valve stem are connected by connecting bolts, which have high connection stability and are convenient for external wire connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of an embodiment of the present application.

[0028] Figure 2 It is an overall cross-sectional view of an embodiment of the present application.

[0029] Figure 3 It is a structural diagram of the connection between the valve core and the valve stem in an embodiment of the present application.

[0030] Figure 4 yes Figure 2 Enlarged schematic diagram of point A in the middle.

[0031] Figure 5 It is an exploded schematic diagram of the handle and valve stem in the embodiment of the present application.

[0032] Explanation of the accompanying drawings: 1. Valve body; 11. First base; 12. Second base; 121. Guide hole; 122. Positioning groove; 123. Extension ring; 124. Sealing ring; 125. Anti-slip groove; 126. Through hole; 2. Valve core; 21. Insert groove; 22. Flow channel hole; 3. Valve stem; 31. Insert part; 311. Mounting groove; 312. Shock-absorbing spring; 313. Shock-absorbing block; 32. Anti-slip part; 33. Rotating part; 331. Connecting screw hole; 332. Cutting groove; 4. Handle; 41. Through hole; 42. Gasket; 43. Connecting bolt. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiment of the present application discloses a ball valve with a shock-absorbing function.

[0035] Reference Figure 1 and Figure 2 A ball valve with a shock-absorbing function includes a valve body 1, a valve core 2 rotatably arranged in the valve body 1, and a valve stem 3 plugged into the valve core 2. The valve body 1 is provided with a guide hole 121 passing through on both sides, and the valve core 2 is provided with a flow channel hole 22 for allowing the medium to pass through. When the valve stem 3 rotates, the valve core 2 will rotate synchronously therewith to connect or close the flow channel hole 22 and the guide hole 121.

[0036] Reference Figure 1 and Figure 2 The valve body 1 includes a first base 11 and a second base 12 arranged opposite to each other. When assembling the valve body 1, the first base 11 and the second base 12 can be connected into one by tightening bolts. After assembly, a cavity for accommodating the valve core 2 is formed between the first base 11 and the second base 12.

[0037] Reference Figure 2 and Figure 3 The valve stem 3 includes an integrally formed plug-in portion 31, an anti-slip portion 32, and a rotating portion 33. The anti-slip portion 32 is located between the plug-in portion 31 and the rotating portion 33. The cross-sections of the rotating portion 33 and the anti-slip portion 32 are both circular, and the diameter of the anti-slip portion 32 is larger than that of the rotating portion 33. The cross-section of the plug-in portion 31 is non-circular, and in this embodiment, it is preferably square. In other cases, the specific shape can be designed according to customer requirements.

[0038] Reference Figure 3 and Figure 4 The inner wall of the valve body 1 is provided with an anti-slip groove 125. The wall of the anti-slip groove 125 is provided with a through hole 126 that communicates with the outer side of the valve body 1. The inner diameter of the through hole 126 is smaller than the diameter of the anti-slip portion 32 and slightly larger than the diameter of the rotating portion 33. When the valve stem 3 is installed in the valve body 1, the anti-slip portion 32 is located in the anti-slip groove 125, and the rotating portion 33 rotates through the through hole 126.

[0039] Reference Figure 3 and Figure 4 The valve core 2 is provided with a plug-in slot 21 for the plug-in portion 31 to extend into. Mounting slots 311 are provided on two opposing side walls of the plug-in portion 31. A shock-absorbing spring 312 is disposed within the mounting slot 311. One end of the shock-absorbing spring 312 is secured to the wall of the mounting slot 311, while the other end is secured to a shock-absorbing block 313. In this embodiment, the shock-absorbing block 313 is spherical. When the valve stem 3 is connected to the valve core 2, the shock-absorbing block 313 abuts against the wall of the plug-in slot 21. When the ball valve is subjected to vibration, the shock-absorbing spring 312 acts as a buffer and reduces vibration, preventing the valve stem 3 and valve core 2 from colliding and generating noise.

[0040] Reference Figure 2 and Figure 4 The inner wall of valve body 1 is provided with a positioning groove 122 that communicates with guide hole 121. An extension ring 123 is integrally formed on the wall of positioning groove 122. A sealing ring 124 is embedded between extension ring 123 and the wall of positioning groove 122. Sealing ring 124 is located inside extension ring 123 and abuts against the gap between valve body 1 and valve core 2, preventing media from penetrating the gap between valve body 1 and valve core 2, thereby achieving a good sealing effect. Sealing ring 124 is made of polytetrafluoroethylene, which is resistant to high temperatures, acids and alkalis, and has a long service life.

[0041] Reference Figure 2 and Figure 5 The valve stem 3 is detachably provided with a handle 4 located outside the valve body 1. The handle 4 is provided with a non-circular through-hole 41. The rotating portion 33 has a cutout groove 332 on its opposite sidewall at the end thereof adjacent to the handle 4. The cutout groove 332 allows the shape of one end of the rotating portion 33 to fit within the through-hole 41, facilitating insertion of the handle 4 onto the outside of the valve stem 3 and driving the valve stem 3 to rotate. A connecting screw hole 331 is provided on the end surface of the rotating portion 33 away from the plug-in portion 31. A connecting bolt 43 is provided on the connecting screw hole 331, and a gasket 42 is sleeved on the connecting bolt 43.

[0042] Reference Figure 5 To assemble the handle 4, first insert the end of the valve stem 3 with the cutout 332 into the through-hole 41, so that the inner wall of the through-hole 41 abuts against the wall of the cutout 332. Then, thread the connecting bolt 43, which is fitted with the gasket 42, into the connecting screw hole 331 to secure the handle 4 to the valve stem 3. This connection method offers strong stability and ease of disassembly. If the ball valve requires external wiring, the wiring can be directly pressed under the gasket 42 for easy installation.

[0043] The implementation principle of the shock-absorbing ball valve of the present embodiment is as follows: when assembling the ball valve, first extend the valve stem 3 from the inside out through the through hole 126, then extend the valve core 2 into the valve body 1, and make the plug portion 31 extend into the plug slot 21, so that the shock-absorbing block 313 abuts against the slot wall of the plug slot 21, and then connect the first base 11 and the second base 12 with the fastening bolt. Finally, the handle 4 is placed on the valve stem 3, and the connecting bolt 43 with the gasket 42 is threadedly engaged with the connecting screw hole 331 to fix the handle 4 on the valve stem 3.

[0044] After the ball valve is assembled, the handle 4 is used to control the valve stem 3 to rotate the valve core 2. When the guide hole 121 is connected to the flow channel hole 22, the medium can flow through the ball valve along the guide hole 121 and the flow channel hole 22. When the ball valve is subjected to vibration, the shock-absorbing spring 312 can absorb the impact force, playing a role in buffering and reducing operating noise.

[0045] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A ball valve with a shock-absorbing function, comprising a valve body (1), a valve core (2) rotatably disposed in the valve body (1), and a valve stem (3) connected to the valve core (2), characterized in that: The valve stem (3) includes a plug-in portion (31), and the valve core (2) is provided with a plug-in slot (21) for the plug-in portion (31) to extend into. A shock-absorbing spring (312) is provided on the plug-in portion (31), and a shock-absorbing block (313) is connected to the shock-absorbing spring (312). The shock-absorbing block (313) abuts against the slot wall of the plug-in slot (21).

2. The ball valve with shock absorption function according to claim 1, characterized in that: The plug-in portion (31) is provided with a mounting groove (311), and the shock-absorbing spring (312) is arranged in the mounting groove (311).

3. The ball valve with shock absorption function according to claim 1, characterized in that: The shock absorbing block (313) is spherical.

4. The ball valve with shock absorption function according to claim 1, characterized in that: The valve stem (3) further comprises a rotating portion (33) and an anti-slip portion (32) integrally formed on the rotating portion (33); the anti-slip portion (32) is located between the rotating portion (33) and the plug-in portion (31); an anti-slip groove (125) for the anti-slip portion (32) to extend into is provided on the inner wall of the valve body (1); a through hole (126) for the rotating portion (33) to rotate through is provided on the groove wall of the anti-slip groove (125) away from the valve core (2); the inner diameter of the through hole (126) is smaller than the diameter of the anti-slip portion (32).

5. The ball valve with shock absorption function according to claim 1, characterized in that: The valve stem (3) is provided with a detachable handle (4), and the handle (4) is located outside the valve body (1).

6. The ball valve with shock absorption function according to claim 5, characterized in that: The handle (4) is provided with a non-circular through hole (41), the valve stem (3) is inserted into the through hole (41), and the end of the valve stem (3) away from the valve core (2) is provided with a connecting screw hole (331), a connecting bolt (43) is threadedly connected in the connecting screw hole (331), and a gasket (42) is sleeved on the outer side of the connecting bolt (43), and the outer diameter of the gasket (42) is greater than the width of the through hole (41).

7. The ball valve with shock absorption function according to claim 1, characterized in that: The valve body (1) is provided with a flow guide hole (121) for medium circulation, and the inner wall of the valve body (1) is provided with a positioning groove (122) communicating with the flow guide hole (121). A sealing ring (124) is provided in the positioning groove (122). The sealing ring (124) is arranged in contact between the valve body (1) and the valve core (2), and the sealing ring (124) is a polytetrafluoroethylene ring.

8. The ball valve with shock absorption function according to claim 7, characterized in that: An extension ring (123) is integrally formed on the groove wall of the positioning groove (122), and the extension ring (123) is located on the inner side of the sealing ring (124).

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