ball valve

Abstract

The utility model provides a kind of ball valve, including valve body, valve core, sleeve assembly, valve rod and two valve seats;Valve core is rotationally arranged in the inside of valve body, two valve seats are respectively circumferentially sealed and fixed on the water inlet end and water outlet end of valve body, sleeve assembly is circumferentially sealed and fixed on the upper end of valve body, valve rod is axially arranged in sleeve assembly and is rotationally cooperated with sleeve assembly, the lower end of valve rod is cooperated with valve core and is inserted and circumferentially limited, valve rod is circumferentially sealed and axially limited with sleeve assembly;Ball valve further includes rotating cap and handle rod;Rotating cap is fixed on the upper end of valve rod and is circumferentially limited with valve rod, one end of handle rod is arranged in rotating cap along the radial direction of rotating cap and is threadedly connected with rotating cap, locking structure is arranged between handle rod and sleeve assembly;The utility model can avoid the situation that ball valve is misoperated.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically, to a ball valve. Background Technology

[0002] A ball valve is a device used to control the flow of water. Currently, ball valves on the market mainly consist of a valve body, a valve core, a valve stem, a handle, and two valve seats. The valve core is rotatably located inside the valve body. The two valve seats are circumferentially sealed and fixed to the inlet and outlet ends of the valve body, respectively. The lower end of the valve stem extends into the valve seat and is drivenly connected to the valve core. The handle is fixed to the upper end of the valve stem. When the handle drives the valve stem to rotate, the valve stem drives the valve core to rotate, thereby realizing the opening and closing control of the ball valve. However, in the above ball valve structure, when the handle is turned, the ball valve can be opened or closed, which can easily lead to the ball valve being accidentally opened or closed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a ball valve that can prevent the ball valve from being misoperated.

[0004] This utility model provides a ball valve, including a valve body, a valve core, a sleeve assembly, a valve stem, and two valve seats. The valve core is rotatably disposed inside the valve body. The two valve seats are circumferentially sealed and fixed to the inlet and outlet ends of the valve body, respectively. The sleeve assembly is circumferentially sealed and fixed to the upper end of the valve body. The valve stem axially passes through the sleeve assembly and rotatably engages with it. The lower end of the valve stem engages with the valve core and is circumferentially limited. The valve stem and sleeve assembly are circumferentially sealed and axially limited. The ball valve also includes a rotating cap and a handle. The rotating cap is fixed to the upper end of the valve stem and circumferentially limited. One end of the handle passes through the rotating cap radially and is threadedly connected to it. A locking structure is provided between the handle and the sleeve assembly. When the handle is rotated relative to the rotating cap to one side, it drives the locking structure to lock the rotating cap and the sleeve assembly. When the handle is rotated relative to the rotating cap to the other side, it drives the locking structure to release the locking state of the rotating cap and the sleeve assembly.

[0005] This invention, through the setting of a locking structure, allows the user to lock the rotating cap and sleeve assembly by driving the locking structure through the handle rod after the handle rod is turned to rotate the valve stem and valve core and switch the ball valve to the open or closed state. In this state, the handle rod cannot be turned, thus preventing the ball valve from being opened or closed, thereby avoiding the situation of the ball valve being misoperated.

[0006] In one possible implementation, the locking structure includes a clamp; the clamp is sleeved on the outside of the upper end of the sleeve assembly, and both ends of the clamp have conical protrusions on their outer walls. The inner end of the handle has a insertion hole, and both protrusions are inserted into the insertion hole. When the handle is rotated relative to the rotating cap to one side, the two protrusions continue to be inserted into the insertion hole, and the wall of the insertion hole presses against the two protrusions to bring them closer together, thus clamping the clamp tightly against the upper end of the sleeve assembly. With this locking structure, when the handle is rotated relative to the rotating cap to one side, the two protrusions can continue to be inserted into the insertion hole, and because both protrusions are conical, the wall of the insertion hole can press against them to bring them closer together. When the handle is turned away from the sleeve assembly, the clamp eventually grips the upper end of the sleeve assembly, thus locking the rotating cap and the sleeve assembly. In this state, the rotating cap, valve stem, and valve core cannot be rotated, keeping the ball valve in the open or closed state. Conversely, when the handle is turned relative to the rotating cap to the other side, the two protrusions continuously exit from the socket. At this time, the socket gradually releases the inward pressure on the two protrusions. In this case, the clamp eventually releases its grip on the sleeve assembly, thus releasing the lock on the rotating cap and the sleeve assembly. In this state, the rotating cap can drive the valve core to rotate via the valve stem, allowing the ball valve to switch between the open and closed states.

[0007] In one possible implementation, a sleeve portion is provided on the outer wall of the rotating cap along the radial direction of the rotating cap. One end of the handle rod passes through the sleeve portion along the radial direction of the rotating cap and is threadedly connected to the sleeve portion. An anti-detachment structure is provided between the sleeve portion and the handle rod to prevent the handle rod from detaching from the sleeve portion. By adopting this structure, after one end of the handle rod passes through the sleeve portion along the radial direction of the rotating cap and is threadedly connected to the sleeve portion, the handle rod can be reliably connected to the rotating cap. When the handle rod rotates relative to the rotating cap, the handle rod can move along the radial direction of the rotating cap. In addition, under the action of the anti-detachment structure, the handle rod can be prevented from detaching from the sleeve portion and from detaching from the rotating cap.

[0008] In one possible implementation, the anti-detachment structure includes a limiting rod; the limiting rod passes through the sleeve in the radial direction and is tightly fitted with the sleeve; a ring-shaped limiting groove is provided circumferentially on the outer wall of one end of the handle rod; the limiting rod is partially embedded in the limiting groove and the limiting groove and the limiting rod are slidably fitted; with this structure, when the handle rod is rotated relative to the rotating cap, the handle rod can move in the radial direction of the rotating cap, and during this process, the limiting rod can move in the limiting groove; and due to the action of the limiting groove and the limiting rod, the movement of the handle rod relative to the rotating cap can be limited, while also preventing the handle rod from detaching from the rotating cap.

[0009] In one possible implementation, a rotating handwheel is fixed to the other end of the handle lever; by fixing the rotating handwheel to the other end of the handle lever, the user can rotate the handle lever by rotating the handwheel, which facilitates the rotation of the handle lever relative to the rotating cap.

[0010] In one possible implementation, the ball valve further includes a rotating plate; the rotating plate is sleeved around the upper end of the valve stem and circumferentially limited by the valve stem; the upper end of the sleeve assembly is provided with a groove, the rotating plate is embedded in the groove and rotatably engages with the groove; a lug is provided on the outer wall of the rotating plate, and a limiting notch is provided on the side wall of the groove, the lug slidingly engaging with the limiting notch; when the valve stem drives the valve core to rotate to open the ball valve, the lug abuts against one end of the limiting notch; when the valve stem drives the valve core to rotate to close the ball valve, the lug abuts against the other end of the limiting notch; by adopting this structure, in the valve stem... When the valve core is rotated to open the ball valve, the lug abuts against one end of the limiting notch. When the valve stem rotates the valve core to close the ball valve, the lug abuts against the other end of the limiting notch. This achieves rotational limitation on the valve stem and valve core. Alternatively, after the valve stem rotates the valve core and the lug abuts against one end of the limiting notch, the ball valve is ensured to be in the open state. After the valve stem rotates the valve core and the lug abuts against the other end of the limiting notch, the ball valve is ensured to be in the closed state. This makes the opening and closing of the ball valve more precise.

[0011] In one possible implementation, the sleeve assembly includes a first sleeve and a second sleeve; the lower end of the first sleeve is threadedly fastened to the upper end of the valve body and circumferentially sealed to the valve body, the lower end of the second sleeve is threadedly fastened to the upper end of the first sleeve, a groove is provided at the upper end of the second sleeve, and the valve stem is axially inserted into the first and second sleeves and circumferentially sealed to both sleeves; an annular step is provided on the outer wall of the upper part of the valve stem, the annular step abuts against the inner top of the second sleeve and axially limits its movement; by using this sleeve assembly, the axial limiting of the valve stem can be reliably achieved when the annular step abuts against the inner top of the second sleeve, so as to avoid the valve stem from detaching from the valve core and the sleeve assembly.

[0012] In one possible implementation, at least one drain hole is provided at the bottom of the valve body, and a first plug cap for sealing the drain hole is threaded to the drain hole; by providing a drain hole at the bottom of the valve body, when the ball valve is used in a low-temperature region, after the ball valve is in the closed state, the first plug cap can be removed and the residual water inside the valve body can be discharged from the drain hole, so as to avoid the ball valve from freezing and cracking.

[0013] In one possible implementation, the ball valve further includes a first connector and a second connector; one end of the first connector is inserted into one of the valve seats and circumferentially sealed to the valve seat, and a first screw threadedly connected to the valve seat is provided on the side wall of one of the valve seats, and the first connector is fastened to one of the valve seats by the first screw; one end of the second connector is inserted into another valve seat and circumferentially sealed to the valve seat, and a second screw threadedly connected to the valve seat is provided on the side wall of the other valve seat, and the second connector is fastened to the other valve seat by the second screw; with the above structure, under the action of the first screw and the second screw, the first connector and the second connector can be conveniently connected to the valve seats on the corresponding sides respectively, and both the first connector and the second connector are circumferentially sealed to the valve seats on the corresponding sides by sealing rings.

[0014] In one possible implementation, a pressure relief hole is provided at the lower edge of the first connector, and a second plug cap for sealing the pressure relief hole is threadedly connected to the pressure relief hole. The second plug cap is horizontally aligned with an indicator notch located at the bottom of the valve seat on the corresponding side. An indicator protrusion is provided on the outer wall of one end of the second connector, and the indicator protrusion is horizontally aligned with an indicator notch located at the top of the valve seat on the corresponding side. Because of the pressure relief hole, when the second plug cap is removed, the pressure in the pipeline and ball valve can be released through the pressure relief hole, thus preventing excessive pressure in the pipeline and ball valve from causing them to burst. Furthermore, when the ball valve is used in cold regions, the second plug can be removed to allow residual water in the pipeline to drain through the pressure relief hole, thus preventing the ball valve and pipeline from freezing and cracking. In addition, by setting the indicator notch, when the first connector is assembled with the valve seat on the corresponding side, the second plug can be aligned with the indicator notch on the corresponding side, thereby ensuring that the first connector is installed at the correct angle. When the second connector is assembled with the valve seat on the corresponding side, the indicator protrusion can be aligned with the indicator notch on the corresponding side, thereby ensuring that the second connector is installed at the correct angle. Attached Figure Description

[0015] Figure 1 This is the first three-dimensional structural schematic diagram of the present invention; Figure 2 This is a second three-dimensional structural schematic diagram of the present invention; Figure 3 This is the first cross-sectional structural schematic diagram of this utility model; Figure 4 This is a second cross-sectional view of the present invention; Figure 5 for Figure 4 A magnified structural diagram of point A in the middle; Figure 6 This is a partially exploded three-dimensional structural diagram of the present invention. Detailed Implementation

[0016] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0017] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0018] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] See Figure 1-6As shown in the figure, this application discloses a ball valve, including a valve body 1, a valve core 2, a sleeve assembly 3, a valve stem 4, and two valve seats 5; the valve core 2 is rotatably disposed inside the valve body 1, and the two valve seats 5 are respectively circumferentially sealed and fixed to the inlet and outlet ends of the valve body 1, respectively; the sleeve assembly 3 is circumferentially sealed and fixed to the upper end of the valve body 1; the valve stem 4 is axially inserted into the sleeve assembly 3 and rotatably engaged with the sleeve assembly 3; the lower end of the valve stem 4 is engaged with the valve core 2 and circumferentially limited; the valve stem 4 and the sleeve assembly 3 are circumferentially sealed and axially limited; the ball valve also includes a rotating cap 6 and a hand... Handle rod 7; Rotating cap 6 is fixed to the upper end of valve stem 4 and circumferentially limited by valve stem 4. One end of handle rod 7 passes through rotating cap 6 in the radial direction and is threadedly connected to rotating cap 6. A locking structure is provided between handle rod 7 and sleeve assembly 3. When handle rod 7 is rotated to one side relative to rotating cap 6, handle rod 7 is used to drive the locking structure to lock rotating cap 6 and sleeve assembly 3. When handle rod 7 is rotated to the other side relative to rotating cap 6, handle rod 7 is used to drive the locking structure to release the locking state of rotating cap 6 and sleeve assembly 3.

[0021] See you again Figures 4-6 As shown, the locking structure includes a clamp 8; the clamp 8 is sleeved on the outside of the upper end of the sleeve assembly 3, and both ends of the clamp 8 have conical protrusions 81 on their outer walls. The inner end of the handle 7 has a socket 71, and both protrusions 81 are inserted into the socket 71. When the handle 7 is rotated to one side relative to the rotating cap 6, the two protrusions 81 are continuously inserted into the socket 71, and the wall of the socket 71 is used to press the two protrusions 81 so that the two protrusions 81 move closer to each other, and the clamp 8 is tightened at the upper end of the sleeve assembly 3. With this locking structure, when the handle 7 is rotated to one side relative to the rotating cap, the two protrusions can be continuously inserted into the socket, and since both protrusions are conical, the wall of the socket can press the two protrusions. To bring the two protrusions closer together, the clamp can eventually grip the upper end of the sleeve assembly, thus locking the rotating cap and sleeve assembly. In this state, the rotating cap, valve stem, and valve core cannot be rotated, keeping the ball valve in the open or closed state. Conversely, when the handle is rotated relative to the rotating cap to the other side, the two protrusions can continuously exit from the socket. At this time, the socket can gradually release the inward pressure on the two protrusions. In this state, the clamp can eventually release its grip on the sleeve assembly, thus releasing the lock on the rotating cap and sleeve assembly. In this state, the rotating cap can drive the valve core to rotate via the valve stem, allowing the ball valve to switch between the open and closed states.

[0022] See you again Figure 5As shown, a sleeve portion 61 is provided on the outer wall of the rotating cap 6 along the radial direction of the rotating cap 6. One end of the handle rod 7 passes through the sleeve portion 61 along the radial direction of the rotating cap 6 and is threadedly connected to the sleeve portion 61. An anti-detachment structure is provided between the sleeve portion 61 and the handle rod 7. The anti-detachment structure is used to prevent the handle rod 7 from detaching from the sleeve portion 61. By adopting this structure, after one end of the handle rod passes through the sleeve portion along the radial direction of the rotating cap and is threadedly connected to the sleeve portion, the handle rod can be reliably connected to the rotating cap. When the handle rod rotates relative to the rotating cap, the handle rod can move along the radial direction of the rotating cap. In addition, under the action of the anti-detachment structure, the handle rod can be prevented from detaching from the sleeve portion and from detaching from the rotating cap.

[0023] See you again Figure 5 As shown, the anti-detachment structure includes a limiting rod 9; the limiting rod 9 passes through the sleeve portion 61 in the radial direction and is tightly fitted with the sleeve portion 61; a ring-shaped limiting groove 72 is provided circumferentially on the outer wall of one end of the handle rod 7; the limiting rod 9 is partially embedded in the limiting groove 72 and the limiting groove 72 and the limiting rod 9 are slidably fitted; by adopting this structure, when the handle rod is rotated relative to the rotating cap, the handle rod can move in the radial direction of the rotating cap, and in this process, the limiting rod can move in the limiting groove; and due to the action of the limiting groove and the limiting rod, the movement of the handle rod relative to the rotating cap can be limited, and the handle rod can also be prevented from detaching from the rotating cap.

[0024] See you again Figures 1-4 as well as Figure 6 As shown, a rotating handwheel 73 is fixed to the other end of the handle 7; by fixing the rotating handwheel to the other end of the handle, the user can rotate the handle by rotating the handwheel, which facilitates the rotation of the handle relative to the rotating cap.

[0025] See you again Figure 6As shown, the ball valve also includes a rotating plate 10; the rotating plate 10 is sleeved on the outside of the upper end of the valve stem 4 and is circumferentially limited by the valve stem 4. The upper end of the sleeve assembly 3 is provided with a groove 321, and the rotating plate 10 is embedded in the groove 321 and rotates in cooperation with the groove 321; a lug 101 is provided on the outer wall of the rotating plate 10, and a limiting notch 322 is provided on the side wall of the groove 321, and the lug 101 slides in the limiting notch 322; when the valve stem 4 drives the valve core 2 to rotate so that the ball valve is in the open state, the lug 101 abuts against one end of the limiting notch 322; when the valve stem 4 drives the valve core 2 to rotate so that the ball valve is in the closed state, the lug 101 abuts against the other end of the limiting notch 322; by adopting this structure, in the valve stem When the valve core is rotated to open the ball valve, the lug abuts against one end of the limiting notch. When the valve stem rotates the valve core to close the ball valve, the lug abuts against the other end of the limiting notch, thus limiting the rotation of the valve stem and valve core. Alternatively, after the valve stem rotates the valve core and the lug abuts against one end of the limiting notch, the ball valve is ensured to be in the open state. After the valve stem rotates the valve core and the lug abuts against the other end of the limiting notch, the ball valve is ensured to be in the closed state, making the opening and closing of the ball valve more precise. In addition, the inner hole of the rotating plate is a square hole, which fits into the square column at the upper end of the valve stem to achieve circumferential limiting.

[0026] See you again Figure 5 As shown, the sleeve assembly 3 includes a first sleeve 31 and a second sleeve 32; the lower end of the first sleeve 31 is threadedly fastened to the upper end of the valve body 1 and circumferentially sealed to the valve body 1, the lower end of the second sleeve 32 is threadedly fastened to the upper end of the first sleeve 31, a groove 321 is provided at the upper end of the second sleeve 32, and the valve stem 4 is axially inserted into the first sleeve 31 and the second sleeve 32 and circumferentially sealed to the first sleeve 31 and the second sleeve 32; an annular step 41 is provided on the outer wall of the upper part of the valve stem 4, and the annular step 41 abuts against the inner top of the second sleeve 32 and is axially limited; by adopting this sleeve assembly, the axial limitation of the valve stem can be reliably achieved when the annular step abuts against the inner top of the second sleeve, so as to avoid the valve stem from detaching from the valve core and the sleeve assembly.

[0027] See you again Figure 3As shown, at least one drain hole 11 is provided at the bottom of the valve body 1, and a first plug 20 for sealing the drain hole 11 is threadedly connected to the drain hole 11. By providing a drain hole at the bottom of the valve body, when the ball valve is used in a low-temperature region, after the ball valve is in the closed state, the first plug 20 can be removed and the residual water inside the valve body can be discharged from the drain hole to avoid the ball valve from freezing and cracking. In this embodiment, there are two drain holes, and the two drain holes are close to the water inlet and water outlet of the valve body, respectively, so that when the ball valve is installed vertically, the water remaining inside the valve body can be smoothly discharged through one of the drain holes.

[0028] See you again Figure 3 As shown, the ball valve also includes a first connector 30 and a second connector 40; one end of the first connector 30 is inserted into one of the valve seats 5 and is circumferentially sealed to the valve seat 5, and a first screw 51 threadedly connected to the valve seat 5 is provided on the side wall of one of the valve seats 5, and the first connector 30 is fastened to one of the valve seats 5 by the first screw 51; one end of the second connector 40 is inserted into another valve seat 5 and is circumferentially sealed to the valve seat 5, and a second screw 52 threadedly connected to the valve seat 5 is provided on the side wall of the other valve seat 5, and the second connector 40 is fastened to the other valve seat 5 by the second screw 52; with the above structure, under the action of the first screw and the second screw, the first connector and the second connector can be conveniently connected to the valve seats on the corresponding sides respectively, and both the first connector and the second connector are circumferentially sealed to the valve seats on the corresponding sides by sealing rings.

[0029] See you again Figure 3 As shown, a pressure relief hole 301 is provided at the lower edge of the first connector 30, and a second plug 302 for sealing the pressure relief hole 301 is threadedly connected to the pressure relief hole 301. The second plug 302 is horizontally aligned with the indicator notch 53 at the bottom of the valve seat 5 on the corresponding side. An indicator protrusion 401 is provided on the outer wall of one end of the second connector 40, and the indicator protrusion 401 is horizontally aligned with the indicator notch 53 at the top of the valve seat 5 on the corresponding side. With the provision of the pressure relief hole, when the second plug is removed, the pressure in the pipeline and ball valve can be released through the pressure relief hole to avoid excessive pressure in the pipeline and ball valve, which could lead to pipeline failure. In cases where the ball valve or pipeline bursts, and when the ball valve is used in cold regions, the second plug can be removed to allow residual water in the pipeline to drain through the pressure relief hole, thus preventing the ball valve and pipeline from freezing and cracking. Furthermore, the indicator notch design ensures that when the first connector is assembled with the corresponding valve seat, the second plug aligns with the corresponding indicator notch, guaranteeing that the first connector is installed at the correct angle. Similarly, when the second connector is assembled with the corresponding valve seat, the indicator protrusion aligns with the corresponding indicator notch, ensuring that the second connector is installed at the correct angle.

[0030] When using this invention, to change the opening and closing state of the ball valve, the handle is rotated relative to the rotating cap, causing the two protrusions on the clamp to gradually disengage from the insertion holes on the handle. At this point, the clamp is released from its grip on the sleeve assembly. In this state, turning the handle causes the rotating cap to rotate the valve stem and valve core, switching the ball valve to the open or closed state. After the ball valve state is changed, the handle is rotated again relative to the rotating cap, causing the two protrusions on the clamp to gradually insert into the insertion holes on the handle. At this point, the clamp re-grips with the upper end of the sleeve assembly. In this state, the handle cannot be turned, thus preventing the ball valve from being opened or closed, and avoiding accidental operation of the ball valve.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A ball valve, comprising a valve body (1), a valve core (2), a sleeve assembly (3), a valve stem (4), and two valve seats (5); the valve core (2) is rotatably disposed inside the valve body (1), the two valve seats (5) are respectively circumferentially sealed and fixed to the inlet and outlet ends of the valve body (1), the sleeve assembly (3) is circumferentially sealed and fixed to the upper end of the valve body (1), the valve stem (4) is axially inserted into the sleeve assembly (3) and rotatably engaged with the sleeve assembly (3), the lower end of the valve stem (4) is engaged with the valve core (2) and circumferentially limited, the valve stem (4) and the sleeve assembly (3) are circumferentially sealed and axially limited; characterized in that: The ball valve also includes a rotating cap (6) and a handle rod (7); the rotating cap (6) is fixed to the upper end of the valve stem (4) and circumferentially limited by the valve stem (4); one end of the handle rod (7) passes through the rotating cap (6) in the radial direction and is threadedly connected to the rotating cap (6); a locking structure is provided between the handle rod (7) and the sleeve assembly (3); when the handle rod (7) is rotated to one side relative to the rotating cap (6), the handle rod (7) is used to drive the locking structure to lock the rotating cap (6) and the sleeve assembly (3); when the handle rod (7) is rotated to the other side relative to the rotating cap (6), the handle rod (7) is used to drive the locking structure to release the locking state of the rotating cap (6) and the sleeve assembly (3).

2. The ball valve according to claim 1, characterized in that: The locking structure includes a clamp (8); the clamp (8) is sleeved on the outside of the upper end of the sleeve assembly (3), and the outer walls of both ends of the clamp (8) are provided with conical protrusions (81), and the inner end of the handle rod (7) is provided with a socket (71), and both protrusions (81) are inserted into the socket (71); when the handle rod (7) is rotated to one side relative to the rotating cap (6), the two protrusions (81) are continuously inserted into the socket (71), and the hole wall of the socket (71) is used to squeeze the two protrusions (81) so that the two protrusions (81) are close to each other, and the clamp (8) is tightened on the upper end of the sleeve assembly (3).

3. The ball valve according to claim 1 or 2, characterized in that: A sleeve portion (61) is provided on the outer side wall of the rotating cap (6) along the radial direction of the rotating cap (6). One end of the handle rod (7) passes through the sleeve portion (61) along the radial direction of the rotating cap (6) and is threadedly connected to the sleeve portion (61). An anti-detachment structure is provided between the sleeve portion (61) and the handle rod (7). The anti-detachment structure is used to restrict the handle rod (7) from detaching from the sleeve portion (61).

4. The ball valve according to claim 3, characterized in that: The anti-detachment structure includes a limiting rod (9); the limiting rod (9) passes through the sleeve (61) in the radial direction and is tightly fitted with the sleeve (61); a ring-shaped limiting groove (72) is provided circumferentially on the outer wall of one end of the handle rod (7); the limiting rod (9) is partially embedded in the limiting groove (72) and the limiting groove (72) and the limiting rod (9) slide together.

5. The ball valve according to claim 1, 2, or 4, characterized in that: A rotating handwheel (73) is fixed to the other end of the handle (7).

6. The ball valve according to claim 1, 2, or 4, characterized in that: The ball valve also includes a rotating plate (10); the rotating plate (10) is sleeved on the outside of the upper end of the valve stem (4) and is circumferentially limited by the valve stem (4); the upper end of the sleeve assembly (3) is provided with a groove (321); the rotating plate (10) is embedded in the groove (321) and rotates in cooperation with the groove (321); a lug (101) is provided on the outer wall of the rotating plate (10); a limiting notch (322) is provided on the side wall of the groove (321); the lug (101) slides in cooperation with the limiting notch (322); when the valve stem (4) drives the valve core (2) to rotate so that the ball valve is in the open state, the lug (101) abuts against one end of the limiting notch (322); when the valve stem (4) drives the valve core (2) to rotate so that the ball valve is in the closed state, the lug (101) abuts against the other end of the limiting notch (322).

7. The ball valve according to claim 6, characterized in that: The sleeve assembly (3) includes a first sleeve (31) and a second sleeve (32); the lower end of the first sleeve (31) is threadedly fastened to the upper end of the valve body (1) and circumferentially sealed to the valve body (1); the lower end of the second sleeve (32) is threadedly fastened to the upper end of the first sleeve (31); the groove (321) is provided at the upper end of the second sleeve (32); the valve stem (4) is axially inserted into the first sleeve (31) and the second sleeve (32) and circumferentially sealed to the first sleeve (31) and the second sleeve (32); an annular step (41) is provided on the outer wall of the upper part of the valve stem (4); the annular step (41) abuts against the inner top of the second sleeve (32) and is axially limited.

8. The ball valve according to claim 1, 2, 4, or 7, characterized in that: The bottom of the valve body (1) is provided with at least one drain hole (11), and a first plug (20) for sealing the drain hole (11) is threadedly connected to the drain hole (11).

9. The ball valve according to claim 1, 2, 4, or 7, characterized in that: The ball valve further includes a first connector (30) and a second connector (40); one end of the first connector (30) is inserted into one of the valve seats (5) and circumferentially sealed to the valve seat (5), and a first screw (51) threadedly connected to the valve seat (5) is provided on the side wall of one of the valve seats (5), and the first connector (30) is fastened to one of the valve seats (5) by the first screw (51); one end of the second connector (40) is inserted into another valve seat (5) and circumferentially sealed to the valve seat (5), and a second screw (52) threadedly connected to the valve seat (5) is provided on the side wall of the other valve seat (5), and the second connector (40) is fastened to the other valve seat (5) by the second screw (52).

10. The ball valve according to claim 9, characterized in that: The first connector (30) has a pressure relief hole (301) at its lower edge. A second plug (302) for sealing the pressure relief hole (301) is threaded to the pressure relief hole (301). The second plug (302) is horizontally aligned with the indicator notch (53) at the bottom of the valve seat (5) on the corresponding side. An indicator protrusion (401) is provided on the outer wall of one end of the second connector (40). The indicator protrusion (401) is horizontally aligned with the indicator notch (53) at the top of the valve seat (5) on the corresponding side.

Images