Highly sealed fixed special ball valve

Abstract

The utility model relates to a kind of high sealing fixed special ball valve, involve ball valve technical field, including valve body, for bearing part;Ball, rotation setting on valve body, for controlling fluid on-off;Valve seat, setting on valve body, for sealing ball valve, first connecting groove is opened on valve seat;Soft sealing ring, setting on ball, for sealing with valve seat cooperation, second connecting groove is opened on soft sealing ring;Water pipe, setting on valve body, for guiding fluid flow-through;Sealing fixing piece, setting on water pipe, for carrying out sealing and fixed to ball;Sealing fixing piece includes, hard sealing ring, movably set in first connecting groove and second connecting groove, for sealing ball and angle fixed to ball;Compression elongated member, setting on water pipe, one end is rotationally connected with hard sealing ring, for driving displacement of hard sealing ring, the utility model forms double seal by compression elongated member, limit opening and closing angle reduces the stress between ball and valve seat.

Description

Technical Field

[0001] This application relates to the field of ball valve technology, and in particular to a high-sealing fixed special ball valve. Background Technology

[0002] A ball valve is a type of rotary valve. Its closing element is a ball, which rotates around the axis of the valve stem to open and close. There is a through hole on the surface of the ball. When the ball rotates to a certain angle and the through hole is aligned with the inlet and outlet channels of the valve body, the valve is in the open state. When the ball rotates 90 degrees and the through hole is perpendicular to the channel, the valve is closed, cutting off the fluid passage.

[0003] Currently, Chinese utility model patent application CN 218510226U, published on February 21, 2023, discloses an integral flange high-temperature ball valve. It includes a housing with a water flow channel, a ball rotatably disposed within the housing, and a control component for controlling the rotation of the ball. The ball has a through hole for fluid passage, and the ball controls the flow channel's flow resistance. It also includes two flow channel sealing rings disposed on the inner wall of the water flow channel, with the axis of the flow channel sealing rings aligned with the water flow direction. Both ends of the ball are in sealing contact with the inner walls of the two flow channel sealing rings. A heat-insulating convex ring is fixed to the inner wall of the housing, located on the side of the ball facing the hot water inlet. The inner wall of the heat-insulating convex ring has a heat-insulating cavity, and the flow channel sealing rings fit snugly against the heat-insulating convex rings. This high-temperature ball valve effectively protects the flow channel sealing rings, extends their lifespan, and thus extends the service life of the high-temperature ball valve.

[0004] The high-sealing fixed special ball valve in related technologies, with the addition of a heat insulation cavity to the sealing ring, is prone to unstable sealing during the sealing process, which can easily lead to liquid leakage during use. The leaked liquid may seep into other equipment, causing equipment failure.

[0005] Therefore, it is necessary to provide a high-sealing, fixed special ball valve to solve the above problems. Utility Model Content

[0006] This application provides a high-sealing fixed special ball valve to improve the technical problem in related technologies where the sealing process of ball valves is unstable, which easily leads to liquid leakage during use.

[0007] This application provides a high-sealing fixed special ball valve, including:

[0008] The valve body is used to support the components;

[0009] A ball, rotatably mounted on the valve body, is used to control the flow of fluid.

[0010] A valve seat, disposed on the valve body, is used to seal the ball valve, and a first connecting groove is provided on the valve seat;

[0011] A soft sealing ring is disposed on the ball and is used to cooperate with the valve seat for sealing. A second connecting groove is provided on the soft sealing ring.

[0012] An inlet pipe, installed on the valve body, is used to guide fluid flow;

[0013] A sealing and fixing component is provided on the water inlet pipe for sealing and fixing the sphere;

[0014] The sealing fastener includes,

[0015] A hard sealing ring is movably disposed in the first connecting groove and the second connecting groove, used to seal the sphere and fix the angle of the sphere;

[0016] A compression elongation member is provided on the water inlet pipe, one end of which is rotatably connected to the hard sealing ring to drive the displacement of the hard sealing ring.

[0017] The technical solutions described above in this application embodiment have at least the following technical effects: During the use of the ball valve, the ball opens to allow fluid flow. The soft sealing ring on the ball cooperates with the valve seat, connecting the first connecting groove and the second connecting groove. By pressing and compressing the elongated member, the elongated member drives the hard sealing ring to move and insert into the first connecting groove and the second connecting groove, thereby enhancing the sealing between the valve seat and the ball, restricting the rotation of the ball, and limiting the opening and closing angle can reduce the mechanical stress between the ball and the valve seat, thereby reducing material fatigue.

[0018] The high-sealing fixed special ball valve provided in this application embodiment can form a preliminary seal by compressing the elongated part, where the soft sealing ring on the ball cooperates with the valve seat. By pressing and compressing the elongated part, the hard sealing ring is further displaced and inserted into the connecting groove to form a double seal. This double sealing mechanism can effectively prevent fluid leakage and maintain good sealing performance even under high pressure and high flow conditions. By limiting the opening and closing angle, the mechanical stress between the ball and the valve seat can be reduced, thereby reducing material fatigue.

[0019] In some embodiments, a connecting handle is movably disposed through the water inlet pipe, and a rotating column is disposed inside the water inlet pipe on the connecting handle. The end of the rotating column away from the connecting handle is connected to the compression elongation member in a transmission manner.

[0020] In some embodiments, the compression elongation member includes:

[0021] The first rotating bar is rotatably mounted on the rotating column;

[0022] The second rotating bar is rotatably mounted on the rotating column, and the first rotating bar and the second rotating bar are symmetrically arranged opposite to the rotating column;

[0023] The telescopic spring has one end rotating and abutting against the first rotating bar, and the other end rotating and abutting against the second rotating bar.

[0024] In some embodiments, an abutment ring is rotatably connected to the first rotating bar, and the hard sealing ring is disposed on the abutment ring.

[0025] In some embodiments, the connecting handle is further provided with a snap-fit ​​element, the snap-fit ​​element comprising:

[0026] A compression spring is provided on the connecting handle, and the compression spring is disposed in the connecting groove;

[0027] A wedge-shaped block is disposed on the end of the compression spring away from the connecting handle.

[0028] In some embodiments, the water inlet pipe is provided with a retraction groove, the size of which is equal to the size of the wedge block.

[0029] In some embodiments, the ball is provided with a valve stem for driving the ball to rotate, the valve stem is provided with a handle, the valve body is provided with a stop block for limiting the rotation angle of the valve stem driven by the handle, and the valve body is provided with a water outlet pipe. Attached Figure Description

[0030] Figure 1 A three-dimensional structural schematic diagram of the high-sealing fixed special ball valve provided in the embodiments of this application;

[0031] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 A cross-sectional structural schematic diagram of the high-sealing fixed special ball valve provided in the embodiments of this application;

[0033] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0034] Figure 5 A three-dimensional structural schematic diagram of the sealing fastener provided in the embodiments of this application;

[0035] Figure 6 This is an exploded view of the snap-fit ​​connector provided in the embodiments of this application;

[0036] The following are the labeling elements in the figure:

[0037] 1. Valve body; 11. Valve stem; 12. Ball; 13. Soft sealing ring; 14. Inlet pipe; 15. Outlet pipe; 16. Valve seat; 2. Sealing fastener; 21. Connecting handle; 22. Snap-fit ​​component; 221. Wedge block; 222. Connecting groove; 223. Compression spring; 224. Rotating column; 225. Retraction groove; 23. Compression extension component; 231. First rotating bar; 232. Second rotating bar; 233. Telescopic spring; 24. Abutment ring; 25. Hard sealing ring; 26. First connecting groove; 27. Second connecting groove; 3. Handle; 31. Stop block. Detailed Implementation

[0038] Based on this, in order to improve the technical problem that ball valves in the related technology have unstable sealing during the sealing process and are prone to liquid leakage during use, the embodiments of this application provide the following solutions.

[0039] Please refer to the following: Figures 1 to 6 This application provides a high-sealing fixed special ball valve, which includes a valve body 1 for supporting components; a ball 12 rotatably mounted on the valve body 1 for controlling fluid flow; a valve seat 16 mounted on the valve body 1 for sealing the ball valve, and the valve seat 16 has a first connecting groove 26; a soft sealing ring 13 mounted on the ball 12 for sealing with the valve seat 16, and the soft sealing ring 13 has a second connecting groove 27; an inlet pipe 14 mounted on the valve body 1 for guiding fluid flow; a sealing fastener 2 mounted on the inlet pipe 14 for sealing and fixing the ball 12; a valve stem 11 mounted on the ball 12 for driving the ball 12 to rotate, a handle 3 mounted on the valve stem 11, a stop block 31 mounted on the valve body 1 for limiting the rotation angle of the valve stem 11 driven by the handle 3; and an outlet pipe 15 mounted on the valve body 1.

[0040] In some embodiments, please refer to the following: Figures 1 to 5The sealing fastener 2 includes a hard sealing ring 25, movably disposed in the first connecting groove 26 and the second connecting groove 27, used to seal the ball 12 and fix the angle of the ball 12; a compression elongation member 23, disposed on the water inlet pipe 14, one end of which is rotatably connected to the hard sealing ring 25, used to drive the displacement of the hard sealing ring 25; a connecting handle 21 is movably disposed through the water inlet pipe 14, and a rotating column 224 is disposed inside the water inlet pipe 14 on the connecting handle 21, with the rotating column 224 located away from the connecting handle 21. The end is connected to the compression extension member 23 for transmission. The compression extension member 23 includes: a first rotating bar, which is rotatably mounted on the rotating column 224; a second rotating bar, which is rotatably mounted on the rotating column 224, with the first rotating bar 231 and the second rotating bar 232 symmetrically arranged relative to the rotating column 224; and a telescopic spring 233, one end of which rotatably abuts against the first rotating bar, and the other end of which rotatably abuts against the second rotating bar. An abutment ring 24 is rotatably connected to the first rotating bar 231, and a hard sealing ring 25 is disposed on the abutment ring 24.

[0041] With this configuration, during the use of the ball valve, the ball 12 opens, allowing fluid flow. The soft sealing ring 13 on the ball 12 engages with the valve seat 16, connecting the first connecting groove 26 and the second connecting groove 27. By pressing the connecting handle 21 within the rotating column 224, the rotating column 224 drives the first rotating bar 231 and the second rotating bar 232 downwards. Simultaneously, the first rotating bar 231 drives the abutment ring 24 to move the hard sealing ring 25, causing the hard sealing ring 25 to insert into the first connecting groove 26 and the second connecting groove 27. The soft sealing ring 13 on the ball 12 and the valve seat 16... In conjunction, a preliminary seal is formed. By pressing and compressing the elongated member 23, the hard sealing ring 25 is further displaced and inserted into the connecting groove 222, forming a double seal. At the same time, the hard sealing ring 25 is inserted into the soft sealing ring 13. Limiting the opening and closing angle can reduce the mechanical stress between the ball 12 and the valve seat 16, thereby reducing material fatigue. When it is necessary to disconnect the connection between the hard sealing ring 25 and the soft sealing ring 13, the restriction of the connecting handle 21 is released. The telescopic spring 233 drives the first rotating bar 231 and the second rotating bar 232 to rotate, thereby causing the hard sealing ring 25 to retract. Thus, the hard sealing ring 25 is inserted into the soft sealing ring 13, further enhancing the sealing performance. This effectively prevents sealing failure caused by aging or wear of the soft sealing ring 13, improving the reliability of the valve. The hard sealing ring 25, through the pressing action of the compression elongation member 23, can tightly fit the ball 12 and the valve seat 16, further enhancing the sealing performance. This effectively prevents sealing failure caused by aging or wear of the soft sealing ring 13. By limiting the opening and closing angle of the ball 12, the relative movement between the ball 12 and the valve seat 16 can be reduced, thereby reducing mechanical stress. This makes the ball valve less prone to fatigue cracks during long-term use, extending the service life of the valve.

[0042] In some embodiments, please refer to the following: Figures 5 to 6 The connecting handle 21 is also provided with a snap-fit ​​component 22, which includes: a compression spring 223, a connecting groove 222 is provided on the connecting handle 21, and the compression spring 223 is disposed in the connecting groove 222; a wedge block 221 is disposed on the end of the compression spring 223 away from the connecting handle 21; and a retraction groove 225 is provided on the water inlet pipe 14, the size of which is equal to the size of the wedge block 221.

[0043] With this configuration, during the process of pressing the rotating column 224 with the connecting handle 21, the wedge block 221 is squeezed through the water inlet pipe 14 and pressed into the connecting groove 222. Then, the wedge block 221 is rebounded by the compression spring 223, so that the wedge block 221 abuts against the inner wall of the water inlet pipe 14. When it is necessary to disconnect the connection between the hard sealing ring 25 and the soft sealing ring 13, the connecting handle 21 is rotated inside the rotating column 224, so that the wedge block 221 abuts against the retraction groove 225. The rebound of the extension spring 233 causes the connecting handle 21 to pop out, thereby disconnecting the connection between the hard sealing ring 25 and the soft sealing ring 13. Thus, when it is necessary to disconnect the connection between the hard sealing ring 25 and the soft sealing ring 13, the connecting handle 21 is rotated inside the rotating column 224 to bring the wedge block 221 into contact with the retraction groove 225. The rebound of the telescopic spring 233 causes the connecting handle 21 to pop out, thereby disconnecting the connection between the hard sealing ring 25 and the soft sealing ring 13. This makes the disconnection operation very quick and easy.

[0044] The implementation principle of a high-sealing fixed special ball valve in this application embodiment is as follows: During the use of the ball valve, the ball 12 opens, allowing fluid flow. The soft sealing ring 13 on the ball 12 cooperates with the valve seat 16, connecting the first connecting groove 26 and the second connecting groove 27. By pressing the connecting handle 21 inside the rotating column 224, the wedge block 221 is squeezed through the water inlet pipe 14, pressing the wedge block 221 into the connecting groove 222. Subsequently, the wedge block 221 is rebounded by the compression spring 223, causing the wedge block 221 to abut against the inner wall of the water inlet pipe 14. The rotating column 224 drives the first rotating bar 231 and the second rotating bar 232 to press down. At the same time, the first rotating bar 231 drives the abutment ring 24 to move the hard sealing ring 25, so that the hard sealing ring 25 is inserted into the first connecting groove 26 and the second connecting groove 27. The ball 12 The soft sealing ring 13 on the valve seat 16 cooperates to form a preliminary seal. By pressing and compressing the elongated member 23, the hard sealing ring 25 is further displaced and inserted into the connecting groove 222 to form a double seal. At the same time, the hard sealing ring 25 is inserted into the soft sealing ring 13, which limits the opening and closing angle and reduces the mechanical stress between the ball 12 and the valve seat 16, thereby reducing material fatigue. When it is necessary to disconnect the connection between the hard sealing ring 25 and the soft sealing ring 13, the connecting handle 21 is rotated in the rotating column 224 to abut the wedge block 221 against the retraction groove 225. The rebound of the telescopic spring 233 causes the connecting handle 21 to pop out, disconnecting the connection between the hard sealing ring 25 and the soft sealing ring 13. The telescopic spring 233 drives the first rotating bar 231 and the second rotating bar 232 to rotate, thereby causing the hard sealing ring 25 to retract.

[0045] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-sealing fixed special ball valve, characterized in that, include: Valve body (1), used to support components; A ball (12) is rotatably mounted on the valve body (1) for controlling the flow of fluid. A valve seat (16) is provided on the valve body (1) for sealing the ball valve. A first connecting groove (26) is provided on the valve seat (16). A soft sealing ring (13) is provided on the ball (12) for sealing with the valve seat (16). A second connecting groove (27) is provided on the soft sealing ring (13). A water inlet pipe (14) is installed on the valve body (1) to guide fluid flow; A sealing fastener (2) is provided on the water inlet pipe (14) for sealing and fixing the ball (12); The sealing fastener (2) includes, A hard sealing ring (25) is movably disposed in the first connecting groove (26) and the second connecting groove (27) for sealing the ball (12) and fixing the angle of the ball (12); A compression elongation member (23) is provided on the water inlet pipe (14), one end of which is rotatably connected to the hard sealing ring (25) to drive the displacement of the hard sealing ring (25).

2. The high-sealing fixed special ball valve according to claim 1, characterized in that: A connecting handle (21) is movably provided through the water inlet pipe (14). A rotating column (224) is provided inside the water inlet pipe (14) of the connecting handle (21). The end of the rotating column (224) away from the connecting handle (21) is connected to the compression extension member (23) in a transmission connection.

3. A high-sealing fixed special ball valve according to claim 2, characterized in that, The compression elongation member (23) includes: The first rotating bar (231) is rotatably mounted on the rotating column (224); The second rotating bar (232) is rotatably mounted on the rotating column (224), and the first rotating bar (231) and the second rotating bar (232) are symmetrically arranged relative to the rotating column (224); The telescopic spring (233) has one end rotating and abutting against the first rotating bar, and the other end rotating and abutting against the second rotating bar.

4. A high-sealing fixed special ball valve according to claim 3, characterized in that: An abutment ring (24) is rotatably connected to the first rotating bar (231), and the hard sealing ring (25) is disposed on the abutment ring (24).

5. A high-sealing fixed special ball valve according to claim 4, characterized in that, The connecting handle (21) is also provided with a snap-fit ​​component (22), the snap-fit ​​component (22) comprising: A compression spring (223) is provided on the connecting handle (21), and the compression spring (223) is disposed in the connecting groove (222); A wedge block (221) is disposed on the end of the compression spring (223) away from the connecting handle (21).

6. A high-sealing fixed special ball valve according to claim 5, characterized in that: The water inlet pipe (14) is provided with a retraction groove (225), the size of which is equal to the size of the wedge block (221).

7. A high-sealing fixed special ball valve according to claim 6, characterized in that: A valve stem (11) is provided on the ball (12) for driving the ball (12) to rotate. A handle (3) is provided on the valve stem (11). A stop block (31) is provided on the valve body (1) for limiting the rotation angle of the valve stem (11) driven by the handle (3). A water outlet pipe (15) is provided on the valve body (1).

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