Ball valve

Abstract

The utility model belongs to the technical field of switch valves, and discloses a ball valve. The ball valve comprises a valve body and a valve element assembly, a first inserting part and a second inserting part are arranged at the two ends of the valve body correspondingly, inserting structures are arranged on the first inserting part and the second inserting part correspondingly, the first inserting part and the second inserting part are connected with a pipeline in an inserted mode through the inserting structures correspondingly, and at least part of the valve element assembly is rotationally arranged in the valve body. The valve element assembly is used for opening or closing the ball valve. Compared with a traditional threaded connection mode and a plug-in connection mode, time and labor are saved in the installation process, installation steps are greatly simplified, the valve element assembly of the ball valve is allowed to face any direction within the range of 360 degrees, and the installation position and the installation direction of the ball valve are more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of switch valves, in particular to a ball valve. Background Art

[0002] In modern HVAC systems, heat pump systems are increasingly used. Heat pump systems transfer heat from one place to another through a heat exchanger and a driving pump. They are often used for home heating, cooling, and hot water supply. A drain ball valve is usually installed in the water circuit of the heat pump system. The operating state of the water circuit can be adjusted by rotating the handle of the drain ball valve.

[0003] Currently, the drainage ball valves on the market are usually connected to the pipeline by threaded connection. Although this connection method has a certain sealing effect, the installation direction of the drainage ball valve is difficult to determine during the threaded connection process. This means that when tightening the threads, the drainage ball valve handle may be installed in a position that is not conducive to operation, such as the handle facing the floor or wall, which makes it very inconvenient for users to operate the ball valve.

[0004] Therefore, a ball valve is urgently needed to solve the problems in the prior art. Utility Model Content

[0005] The utility model aims to provide a ball valve, both ends of which are respectively plugged into a pipeline, thereby simplifying the installation steps of the ball valve and making the installation position and direction of the ball valve more flexible.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Ball valve, including:

[0008] A valve body, wherein a first plug-in portion and a second plug-in portion are respectively provided at two ends of the valve body, wherein the first plug-in portion and the second plug-in portion are respectively provided with a plug-in structure, and the first plug-in portion and the second plug-in portion are respectively plug-connected with the pipeline through the plug-in structure;

[0009] A valve core assembly, at least part of which is rotatably disposed in the valve body, and the valve core assembly is used to open or close the ball valve.

[0010] Optionally, the plug-in structure comprises a first plug-in structure and a second plug-in structure, the first plug-in portion is provided with the first plug-in structure, and the second plug-in portion is provided with the second plug-in structure;

[0011] Or, the first plug-in structure is respectively provided on the first plug-in portion and the second plug-in portion;

[0012] Alternatively, the second plug-in structure is provided on the first plug-in portion and the second plug-in portion respectively.

[0013] Optionally, the first plug-in structure comprises a sealing section and a fixing section, the sealing section is provided with an annular sealing groove, a sealing ring is provided in the annular sealing groove, and the fixing section is provided with a first fixing stop;

[0014] The ball valve further includes a connecting assembly, the connecting assembly includes a clamp, the pipeline is sleeved on the sealing section and abuts against the first fixed stop, and the clamp is used to fix the pipeline on the first fixed stop;

[0015] Alternatively, the connection assembly includes a clamping plate, the fixing section is provided with an annular clamping groove, the pipeline is sleeved on the sealing section, and the clamping plate passes through the pipeline and is clamped in the annular clamping groove.

[0016] Optionally, a second fixed stop is provided at one end of the pipeline, and the second fixed stop is attached to the first fixed stop to form a fixed portion;

[0017] The clamp includes a first clamp arm, a connecting arm and a second clamp arm, the first clamp arm and the second clamp arm are relatively arranged at two ends of the connecting arm, the first clamp arm and the second clamp arm are respectively provided with a first limiting hole and a second limiting hole, the clamp is embraced on the fixing part, and both sides of the fixing part are respectively penetrated by the first limiting hole and the second limiting hole.

[0018] Optionally, a first bending portion is provided at the first end of the first clamp arm, and the first bending portion is bent toward a side away from the second clamp arm; a second bending portion is provided at the first end of the second clamp arm, and the second bending portion is bent toward a side away from the first clamp arm; and both ends of the connecting arm are respectively connected to the first bending portion and the second bending portion.

[0019] Optionally, a third bending portion is provided at the second end of the first clamp arm, and the third bending portion is bent toward a side away from the second clamp arm;

[0020] A fourth bending portion is disposed at the second end of the second clamping arm, and the fourth bending portion is bent toward a side away from the first clamping arm.

[0021] Optionally, a C-shaped avoidance hole is provided on the pipeline, and the C-shaped avoidance hole corresponds to the annular groove;

[0022] The clamping plate is a C-shaped clamping plate, and the C-shaped clamping plate is embedded in the annular clamping groove, and at least a part of the C-shaped clamping plate is passed through the C-shaped avoidance hole.

[0023] Optionally, the second plug-in structure includes a first conical section, a second conical section, a transition section and a connecting section which are arranged in sequence, and the connecting section is connected to the valve body at one end away from the transition section, and a first limiting step is formed at the connection between the first conical section and the second conical section, and a second limiting step is formed at the connection between the second conical section and the transition section.

[0024] Optionally, the tapers of the first tapered section, the second tapered section and the transition section decrease in sequence.

[0025] Optionally, the valve core assembly further includes:

[0026] A valve core is rotatably disposed in the valve body, and a through hole is provided on the valve core;

[0027] A valve stem, passing through the valve body and connected to the valve core;

[0028] A handle is arranged at an end of the valve stem away from the valve core.

[0029] Beneficial effects:

[0030] The ball valve provided by the utility model includes a valve body and a valve core assembly, wherein a first plug-in portion and a second plug-in portion are respectively provided at two ends of the valve body, and a plug-in structure is respectively provided on the first plug-in portion and the second plug-in portion, and the first plug-in portion and the second plug-in portion are respectively plug-in connected with the pipeline through the plug-in structure, and at least a part of the valve core assembly is rotatably arranged in the valve body, and the valve core assembly is used to open or close the ball valve; compared with the traditional threaded connection, the plug-in connection method saves time and effort in the installation process, greatly simplifies the installation steps, and allows the valve core assembly of the ball valve to face any direction within a range of 360°, so that the installation position and installation direction of the ball valve are more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the ball valve provided in the first embodiment of the utility model at a certain viewing angle;

[0032] Figure 2 It is a structural schematic diagram of the ball valve provided in the first embodiment of the utility model from another perspective;

[0033] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0034] Figure 4 It is an exploded view of the ball valve provided in the first embodiment of the utility model;

[0035] Figure 5 It is a schematic diagram of the structure of the clamp provided in the first embodiment of the utility model;

[0036] Figure 6is a structural schematic diagram of the ball valve provided in the first embodiment of the utility model from another viewing angle;

[0037] Figure 7 It is a cross-sectional view of the ball valve provided in the second embodiment of the utility model;

[0038] Figure 8 It is a structural schematic diagram of the ball valve provided in the second embodiment of the present utility model.

[0039] In the figure:

[0040] 10. First connecting pipe; 11. Second fixed stop; 12. C-shaped avoidance hole;

[0041] 100, valve body; 110, first plug-in portion; 111, sealing section; 1111, sealing groove; 112, fixed section; 1121, first fixed stop; 1122, annular groove; 120, second plug-in portion; 121, first tapered section; 122, second tapered section; 123, transition section; 124, connecting section; 130, limit block;

[0042] 210, clamp; 211, first clamp arm; 2111, first limiting hole; 2112, first bending portion; 2113, second bending portion; 212, connecting arm; 213, second clamp arm; 2131, second limiting hole; 2132, third bending portion; 2133, fourth bending portion; 220, clamping plate; 221, C-shaped clamping plate; 222, gripping portion;

[0043] 300, valve core assembly; 310, valve core; 320, valve stem; 330, handle; 331, limiter; 3311, open limiter; 3312, close limiter;

[0044] 400. Sealing ring. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0049] Embodiment 1

[0050] This embodiment provides a ball valve, such as Figure 1-Figure 8 As shown, the ball valve includes a valve body 100 and a valve core assembly 300, and a first plug-in portion 110 and a second plug-in portion 120 are respectively provided at both ends of the valve body 100, and a plug-in structure is respectively provided on the first plug-in portion 110 and the second plug-in portion 120, and the first plug-in portion 110 and the second plug-in portion 120 are respectively plug-in connected with the pipeline through the plug-in structure, and at least a part of the valve core assembly 300 is rotatably arranged in the valve body 100, and the valve core assembly 300 is used to open or close the ball valve; compared with the traditional threaded connection, the plug-in connection method saves time and effort in the installation process, greatly simplifies the installation steps, and allows the valve core assembly 300 of the ball valve to face any direction within a range of 360°, so that the installation position and installation direction of the ball valve are more flexible.

[0051] Optionally, the pipeline includes a first connecting pipe 10 and a second connecting pipe, and the plug-in structure includes a first plug-in structure and a second plug-in structure. The first plug-in structure is provided on the first plug-in part 110, and the second plug-in structure is provided on the second plug-in part 120. The first plug-in structure enables the first plug-in part 110 to be plug-connected with the first connecting pipe 10, and the second plug-in structure enables the second plug-in part 120 to be plug-connected with the second connecting pipe, so that the ball valve can be quickly connected in the pipeline and ensure that the valve core assembly 300 of the ball valve can face any direction after installation is completed.

[0052] Specifically, if Figure 2-Figure 3As shown, the first plug-in structure includes a sealing section 111 and a fixed section 112, the sealing section 111 is provided with an annular sealing groove 1111, a sealing ring 400 is provided in the annular sealing groove 1111, and a first fixed stop 1121 is provided on the fixed section 112; the ball valve also includes a connecting assembly, the connecting assembly includes a clamp 210, the first connecting pipe 10 is sleeved on the sealing section 111 and abuts against the first fixed stop 1121, and the clamp 210 is used to fix the first connecting pipe 10 on the first fixed stop 1121. By providing the annular sealing groove 1111 and the sealing ring 400 on the sealing section 111, it is ensured that the connection between the sealing section 111 and the first connecting pipe 10 has good sealing performance, and the medium is prevented from leaking therefrom; and the first fixed stop 1121 on the fixed section 112 provides a stable support point, and the pipeline is fixed on the fixed stop by the clamp 210, which ensures the firmness of the connection and reduces the possibility of loosening.

[0053] Alternatively, if Figure 3-Figure 4 As shown, one end of the first connecting pipe 10 is provided with a second fixed stop 11, and the second fixed stop 11 is attached to the first fixed stop 1121 to form a fixed portion; the clamp 210 includes a first clamp arm 211, a connecting arm 212 and a second clamp arm 213, the first clamp arm 211 and the second clamp arm 213 are relatively arranged at the two ends of the connecting arm 212, and the first clamp arm 211 and the second clamp arm 213 are respectively provided with a first limiting hole 2111 and a second limiting hole 2131, the clamp 210 is arranged on the fixed portion, and the first limiting hole 2111 and the second limiting hole 2131 are respectively penetrated on both sides of the fixed portion. The second limiting hole 2131 limits the second fixed stop 11 to move relative to the first fixed stop 1121 along the axial direction of the first plug-in part 110, avoiding the separation of the first fixed stop 1121 and the second fixed stop 11, thereby fixing the first connecting tube 10 on the first plug-in part 110; and, through the clamping action of the first clamp arm 211 and the second clamp arm 213, the first connecting tube 10 and the first plug-in part 110 are connected more tightly and firmly, further improving the stability and sealing of the connection between the first connecting tube 10 and the first plug-in part 110.

[0054] Alternatively, if Figure 5As shown, a first bending portion 2112 is provided at the first end of the first clamp arm 211, and the first bending portion 2112 is bent toward a side away from the second clamp arm 213. A second bending portion 2113 is provided at the first end of the second clamp arm 213, and the second bending portion 2113 is bent toward a side away from the first clamp arm 211. Both ends of the connecting arm 212 are respectively connected to the first bending portion 2112 and the second bending portion 2113. The first bending portion 2112, the connecting arm 212 and the second bending portion 2113 are jointly enclosed to form an avoidance space. The avoidance space is used to avoid the fixed portion to avoid interference between the connecting arm 212 and the fixed portion, while ensuring that the first clamp arm 211 and the second clamp arm 213 are more tightly connected to the fixed portion, thereby improving the fixing effect of the clamp 210 on the fixed portion.

[0055] Alternatively, if Figure 5 As shown, the second end of the first clamp arm 211 is provided with a third bending portion 2132, and the third bending portion 2132 is bent toward a side away from the second clamp arm 213; the second end of the second clamp arm 213 is provided with a fourth bending portion 2133, and the fourth bending portion 2133 is bent toward a side away from the first clamp arm 211. The third bending portion 2132 and the fourth bending portion 2133 make the installation and removal of the clamp 210 more convenient. Specifically, the third bending portion 2132 and the fourth bending portion 2133 are equivalent to two handles. The operator can adjust the opening size of the clamp 210 by holding the third bending portion 2132 and the fourth bending portion 2133, which makes the operation more convenient and improves the efficiency of the installation and removal of the clamp 210.

[0056] Alternatively, if Figure 6 As shown, the second plug-in structure includes a first tapered section 121, a second tapered section 122, a transition section 123 and a connecting section 124 which are arranged in sequence. The end of the connecting section 124 away from the transition section 123 is connected to the valve body 100, and a first limiting step is formed at the connection between the first tapered section 121 and the second tapered section 122, and a second limiting step is formed at the connection between the second tapered section 122 and the transition section 123, thereby forming a pagoda-shaped structure. When the second connecting pipe is inserted into the second plug-in portion 120, the first limiting platform and the second limiting platform can limit the second plug-in portion 120 from coming out of the second connecting pipe, ensuring that the second connecting pipe and the second plug-in portion 120 are connected more stably; and, the end of the connecting section 124 away from the transition section 123 is connected to the valve body 100, so that the pagoda-shaped structure is integrated into the valve body 100, making the structure of the ball valve more compact, and there is no need to set a converter between the ball valve and the second connecting pipe, thereby reducing leakage points.

[0057] Alternatively, if Figure 6 As shown, the tapers of the first tapered section 121, the second tapered section 122 and the transition section 123 decrease successively, ensuring that the second plug-in portion 120 and the second connecting pipe are gradually tightened during plugging, providing better sealing and fixing effects.

[0058] Alternatively, if Figure 2 As shown, the valve core assembly 300 also includes a valve core 310, a valve stem 320 and a handle 330. The valve core 310 is rotatably arranged in the valve body 100. The valve core 310 is provided with a through hole. The valve stem 320 is inserted into the valve body 100 and connected to the valve core 310. The handle 330 is arranged at one end of the valve stem 320 away from the valve core 310. By rotating the handle 330, the ball valve can be opened or closed, so that the first connecting pipe 10 and the second connecting pipe are connected or disconnected. It can be understood that the two ends of the ball valve are respectively plugged into the first connecting pipe 10 and the second connecting pipe, and the handle 330 can be directed to any direction after installation, so as to facilitate the user to operate conveniently.

[0059] Alternatively, if Figure 6 As shown, the valve core assembly 300 also includes two limit blocks 130, and the two limit blocks 130 are evenly distributed on the valve body 100 along the direction of rotation of the valve stem 320. The handle 330 is provided with two limit parts 331, and the two limit parts 331 are centrally symmetrically distributed on the handle 330 along the rotation axis of the valve stem 320. Each limit part 331 includes an opening limit platform 3311 and a closing limit platform 3312. The opening limit surface of the opening limit platform 3311 and the closing limit surface of the closing limit platform 3312 are perpendicular to each other. When the handle 330 rotates to the opening limit surface abutting against the limit block 130, the ball valve is fully opened, and when the handle 330 rotates to the closing limit surface abutting against the limit platform, the ball valve is fully closed. Through the cooperation of the limit block 130 with the opening limit platform 3311 and the closing limit platform 3312, the switching state of the ball valve can be accurately controlled, which improves the convenience and accuracy of operation.

[0060] Embodiment 2

[0061] This embodiment also provides a ball valve, which is basically the same as the first embodiment, and differs from the first embodiment in that: Figure 7-Figure 8 As shown, the first plug-in structure includes a sealing section 111 and a fixed section 112, the sealing section 111 is provided with a sealing groove 1111, the sealing groove 1111 is provided with a sealing ring 400, the fixed section 112 is provided with an annular groove 1122, the connecting component includes a clamping plate 220, the first connecting tube 10 is sleeved on the sealing section 111, the clamping plate 220 passes through the first connecting tube 10 and is clamped in the annular groove 1122, thereby limiting the first plug-in part 110 from escaping from the first connecting tube 10, and realizing the plug-in connection between the first plug-in part 110 and the first connecting tube 10.

[0062] Specifically, a C-shaped avoidance hole 12 is provided on the first connecting tube 10, and the C-shaped avoidance hole 12 corresponds to the annular groove 1122. The clamping plate 220 is a C-shaped clamping plate 221, and the C-shaped clamping plate 221 is embedded in the annular groove 1122. At least part of the C-shaped clamping plate 221 is passed through the C-shaped avoidance hole 12, thereby limiting the axial movement of the first connecting tube 10 along the first plug-in portion 110, thereby fixing the first connecting tube 10 on the first plug-in portion 110.

[0063] Optionally, the card plate 220 further includes a gripping portion 222 , and two gripping portions 222 are disposed on the outer wall of the C-shaped card plate 221 . The size of the opening of the C-shaped card plate 221 can be conveniently adjusted through the two gripping portions 222 , thereby facilitating the disassembly and assembly of the C-shaped card plate 221 .

[0064] Embodiment 3

[0065] The present embodiment provides a ball valve, which is basically the same in structure as the ball valve in the first embodiment, and differs from the first embodiment in that a first plug-in structure is respectively provided on the first plug-in portion 110 and the second plug-in portion 120; or, a second plug-in structure is respectively provided on the first plug-in portion 110 and the second plug-in portion 120. The same plug-in structure is provided at both ends of the ball valve, so that the installation methods at both ends of the ball valve are the same, which helps to further simplify the installation process and improve the installation efficiency.

[0066] It should be noted that the first plug-in structure mentioned in this embodiment can be the clamp-type first plug-in structure in Example 1, or it can be the cardboard-type plug-in structure in Example 2. The specific structures of the clamp-type first plug-in structure and the cardboard-type first plug-in structure will not be repeated.

[0067] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Ball valve, characterized in that: include: A valve body (100), wherein two ends of the valve body (100) are respectively provided with a first plug-in portion (110) and a second plug-in portion (120), the first plug-in portion (110) and the second plug-in portion (120) are respectively provided with a plug-in structure, and the first plug-in portion (110) and the second plug-in portion (120) are respectively plug-connected with a pipeline through the plug-in structure; A valve core assembly (300), at least a portion of which is rotatably disposed in the valve body (100), and the valve core assembly (300) is used to open or close the ball valve.

2. The ball valve according to claim 1, characterized in that: The plug-in structure comprises a first plug-in structure and a second plug-in structure, the first plug-in portion (110) is provided with the first plug-in structure, and the second plug-in portion (120) is provided with the second plug-in structure; Or, the first plug-in structure is respectively provided on the first plug-in portion (110) and the second plug-in portion (120); Alternatively, the first plug-in portion (110) and the second plug-in portion (120) are respectively provided with the second plug-in structure.

3. The ball valve according to claim 2, characterized in that: The first plug-in structure comprises a sealing section (111) and a fixing section (112); the sealing section (111) is provided with an annular sealing groove (1111), a sealing ring (400) is provided in the annular sealing groove (1111), and the fixing section (112) is provided with a first fixing stop (1121); The ball valve further comprises a connection assembly, the connection assembly comprising a clamp (210), the pipeline is sleeved on the sealing section (111) and abuts against the first fixed stop (1121), and the clamp (210) is used to fix the pipeline on the first fixed stop (1121); Alternatively, the connection assembly comprises a clamping plate (220), an annular clamping groove (1122) is provided on the fixing section (112), the pipeline is sleeved on the sealing section (111), and the clamping plate (220) passes through the pipeline and is clamped in the annular clamping groove (1122).

4. The ball valve according to claim 3, characterized in that: A second fixed stopper (11) is provided at one end of the pipeline, and the second fixed stopper (11) is attached to the first fixed stopper (1121) to form a fixed portion; The clamp (210) comprises a first clamp arm (211), a connecting arm (212) and a second clamp arm (213); the first clamp arm (211) and the second clamp arm (213) are arranged at two ends of the connecting arm (212) opposite to each other; the first clamp arm (211) and the second clamp arm (213) are respectively provided with a first limiting hole (2111) and a second limiting hole (2131); the clamp (210) is embraced on the fixing portion, and two sides of the fixing portion are respectively penetrated by the first limiting hole (2111) and the second limiting hole (2131).

5. The ball valve according to claim 4, characterized in that: The first end of the first clamp arm (211) is provided with a first bending portion (2112), and the first bending portion (2112) is bent toward a side away from the second clamp arm (213); the first end of the second clamp arm (213) is provided with a second bending portion (2113), and the second bending portion (2113) is bent toward a side away from the first clamp arm (211); and the two ends of the connecting arm (212) are respectively connected to the first bending portion (2112) and the second bending portion (2113).

6. The ball valve according to claim 4, characterized in that: The second end of the first clamp arm (211) is provided with a third bending portion (2132), and the third bending portion (2132) is bent towards a side away from the second clamp arm (213); The second end of the second clamping arm (213) is provided with a fourth bending portion (2133), and the fourth bending portion (2133) is bent towards a side away from the first clamping arm (211).

7. The ball valve according to claim 3, characterized in that: The pipeline is provided with a C-shaped avoidance hole (12), and the C-shaped avoidance hole (12) corresponds to the annular groove (1122); The clamping plate (220) is a C-shaped clamping plate (221), the C-shaped clamping plate (221) is embedded in the annular clamping groove (1122), and at least a portion of the C-shaped clamping plate (221) is penetrated in the C-shaped avoidance hole (12).

8. The ball valve according to claim 2, characterized in that: The second plug-in structure comprises a first conical section (121), a second conical section (122), a transition section (123) and a connecting section (124) which are arranged in sequence, wherein one end of the connecting section (124) away from the transition section (123) is connected to the valve body (100), and a first limiting step is formed at the connection between the first conical section (121) and the second conical section (122), and a second limiting step is formed at the connection between the second conical section (122) and the transition section (123).

9. The ball valve according to claim 8, characterized in that: The tapers of the first tapered section (121), the second tapered section (122) and the transition section (123) decrease in sequence.

10. The ball valve according to claim 1, characterized in that: The valve core assembly (300) further includes: A valve core (310) is rotatably disposed in the valve body (100), and a through hole is provided on the valve core (310); A valve stem (320) is inserted into the valve body (100) and connected to the valve core (310); A handle (330) is arranged at an end of the valve stem (320) away from the valve core (310).

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