Ball valve

Abstract

The utility model relates to the technical field of valves, and discloses a ball valve. The ball valve comprises a valve body, a valve seat, a valve element and a limiting piece, the valve body is of an integrated structure, the two ends of the valve body are each provided with a connecting structure used for being connected with an external pipeline, a first channel communicated with the external pipeline is formed in the valve body, and a mounting groove is formed in the inner wall of the first channel; the valve seat is arranged in the valve body; the valve element is rotationally arranged in the valve body and can be matched with the valve seat to selectively open and close the first channel. The limiting piece is arranged in the mounting groove and located on the side, away from the valve element, of the valve seat, and the limiting piece can press the valve seat to the valve element. The assembling efficiency of the ball valve is high, precision casting process forming is not needed, the production period can be shortened, and the production cost is reduced.

Description

Technical Field

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

[0002] Ball valves are primarily used to cut off or connect fluids, as well as to regulate and control them. Due to their excellent sealing properties and compact size, they are widely used in piping systems. Ball valves typically consist of a valve body, a valve core, a bonnet, and a valve seat. Depending on the number of bonnets, ball valves can be categorized as either two-piece or three-piece. Ball valves with one bonnet are considered two-piece, while those with two bonnets are considered three-piece.

[0003] In the water sector, the ball valves currently on the market are mainly copper ball valves and stainless steel ball valves. The valve body and valve cover of the copper ball valve are processed separately using a forging process. Although the cost is lower, the copper ball valve has the problem of heavy metal precipitation. Stainless steel ball valves are more environmentally friendly and can solve the problem of heavy metal precipitation. However, the valve body and valve cover of stainless steel ball valves in the existing technology are mostly manufactured using a precision casting process. The valve cover manufactured by the precision casting process can simultaneously form a limiting structure for limiting the valve seat to ensure good sealing between the valve seat and the valve core. However, the use of precision casting to prepare the valve body and valve cover also has the problems of long production cycle and high cost.

[0004] Therefore, it is urgent to propose a ball valve (stainless steel) to solve the above problems. Utility Model Content

[0005] The utility model provides a ball valve, which aims to overcome the problems of long production cycle and high production cost of existing stainless steel ball valves.

[0006] As conceived above, the technical solution adopted by the utility model is:

[0007] A ball valve, comprising:

[0008] The valve body is an integrated structure, and both ends of the valve body are provided with connection structures for connecting to an external pipeline, and the valve body has a first channel connected to the external pipeline;

[0009] a valve seat, disposed in the valve body;

[0010] a valve core rotatably disposed in the valve body and capable of cooperating with the valve seat to selectively open and close the first channel, and a mounting groove is provided on the inner wall of the first channel;

[0011] A limiting member is arranged in the installation groove and is located on a side of the valve seat away from the valve core. The limiting member can press the valve seat tightly against the valve core.

[0012] As a preferred solution, the outer diameter of the valve body is the same at all locations.

[0013] As a preferred solution, the valve body is made of a stainless steel tube.

[0014] As a preferred solution, the first channel includes a first connecting channel, an intermediate channel, and a second connecting channel that are sequentially connected, the connecting structure is provided on the inner walls of the first connecting channel and the second connecting channel, and the valve seat, the valve core, and the limiter are all installed in the intermediate channel;

[0015] An inner diameter of the first connecting channel is larger than an inner diameter of the middle channel, and an inner diameter of the second connecting channel is larger than an inner diameter of the middle channel.

[0016] As a preferred solution, the limiting member is an annular structure, and a notch is provided on the limiting member extending through the limiting member in a radial direction thereof.

[0017] As a preferred solution, the limiting member is provided with matching holes on both sides of the position where the notch is provided.

[0018] As a preferred solution, a gasket is provided between the limiting member and the valve seat.

[0019] As a preferred solution, the ball valve further includes an adjusting component, and the adjusting component includes:

[0020] a valve stem, one end of which can pass through the valve body and be connected to the valve core;

[0021] A handle is connected to one end of the valve stem away from the valve core. Rotating the handle can drive the valve core to rotate through the valve stem to selectively open and close the first channel.

[0022] As a preferred solution, the regulating assembly further includes a sleeve, an outer wall of the valve body is provided with a mounting port connected to the first channel, the sleeve is welded to the mounting port, the valve stem is passed through the sleeve and can rotate relative to the sleeve.

[0023] As a preferred solution, there are two valve seats, the two valve seats are respectively located on both sides of the valve core, and each valve seat corresponds to one limit member; or

[0024] There are two valve seats, which are respectively located on both sides of the valve core. The limit member is provided on the side of one of the valve seats away from the valve core, and an annular protrusion is provided on the valve body at a position corresponding to the other valve seat, and the annular protrusion is abutted against the valve seat.

[0025] The beneficial effects of the utility model are:

[0026] The utility model provides a ball valve, which, by setting the valve body to be an integrated structure, can omit the use of a valve cover and the step of assembling the valve cover and the valve body, thereby improving assembly efficiency; on the other hand, since the valve body is an integrated structure, the leakage points on the ball valve can be reduced, and leakage of the fluid in the valve body from the connection position between the valve body and the valve cover can be avoided, so as to ensure the stability of the use of the ball valve; by arranging an installation groove in the valve body and arranging a limit member in the installation groove, the limit member can be used to limit the position of the valve seat, so as to ensure that there is sufficient pressing force between the valve seat and the valve core, and ensure that the two can be sealed and matched; since a limit member that can limit the valve seat is additionally provided in the valve body, the valve body does not need to adopt a precision casting process to form a corresponding limiting structure, thereby solving the problems of long production cycle and high production cost in the processing of stainless steel ball valves in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of a ball valve provided in Example 1 of the present utility model;

[0028] Figure 2 This is a cross-sectional schematic diagram of the ball valve provided in Example 1 of the present utility model;

[0029] Figure 3 This is a cross-sectional schematic diagram of the valve body provided in the first embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the exploded structure of the ball valve provided in the first embodiment of the present utility model;

[0031] Figure 5 This is a schematic structural diagram of the valve body provided in Example 1 of the present utility model;

[0032] Figure 6 It is a cross-sectional schematic diagram of the valve body provided in the second embodiment of the present utility model.

[0033] In the picture:

[0034] 100, valve body; 101, first channel; 1011, first connecting channel; 1012, second connecting channel; 1013, intermediate channel; 102, mounting groove; 103, annular protrusion; 104, mounting opening; 105, first limiting groove; 106, second limiting groove;

[0035] 200, valve seat; 201, through hole;

[0036] 300, valve core; 301, second channel; 302, plug-in slot;

[0037] 400, limiter; 401, notch; 402, matching hole;

[0038] 500, gasket;

[0039] 600, adjustment assembly; 610, valve stem; 620, handle; 621, first limiting portion; 622, second limiting portion; 630, sleeve; 640, sealing member; 650, locking member. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0041] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0044] Example 1

[0045] Figure 1 A schematic structural diagram of the ball valve provided in this embodiment is shown. Figure 2FIG. 1 shows a cross-sectional schematic diagram of the ball valve provided in this embodiment. Figure 1-Figure 2 As shown, this embodiment provides a ball valve, which includes a valve body 100, a valve seat 200, and a valve core 300. The valve body 100 has a first channel 101, the valve seat 200 is disposed within the valve body 100, and the valve seat 200 has a through hole 201. The valve core 300 has a second channel 301. The valve core 300 is rotatably disposed within the first channel 101 and can cooperate with the valve seat 200 to selectively open and close the first channel 101. When the ball valve is in use, when the valve core 300 rotates until the second channel 301 intersects the through hole 201 of the valve seat 200, the ball valve is in an open state; when the valve core 300 rotates until the second channel 301 is offset from the through hole 201 of the valve seat 200, the ball valve is in a closed state. In addition, as the valve core 300 rotates, the intersection range between the second channel 301 and the through hole 201 of the valve seat 200 also changes, and the fluid flow through the first channel 101 also changes, thereby achieving control of the pipeline flow.

[0046] In the prior art, in order to connect the ball valve to the pipeline, it is also necessary to connect valve covers at both ends of the valve body 100. Most of the ball valves on the market are copper ball valves or stainless steel ball valves. Among them, the valve body and valve cover of the copper ball valve are processed separately by forging process. Although the cost is low, there is a problem of heavy metal precipitation; and although the stainless steel ball valve is more environmentally friendly and can solve the problem of heavy metal precipitation, its valve body and valve cover are mostly manufactured by precision casting process. The valve cover manufactured by precision casting process can simultaneously form a limiting structure for limiting the valve seat 200 to ensure good sealing between the valve seat 200 and the valve core 300, but the valve body and valve cover are prepared by precision casting process, which also leads to the problems of long production cycle and high production cost.

[0047] To address the above-mentioned issues, in this embodiment, the valve body 100 is an integrated structure, and both ends of the valve body 100 are provided with connection structures for connecting to external pipelines. By providing the valve body 100 as an integrated structure, and by enabling both ends of the valve body 100 to be connected to the external pipeline via corresponding connection structures, both ends of the first channel 101 are connected to the external pipeline, thereby achieving the connection or cutoff of the fluid in the pipeline; since both ends of the valve body 100 can be directly connected to the external pipeline, the use of the valve cover can be omitted, and the assembly steps between the valve cover and the valve body 100 can be omitted, thereby improving assembly efficiency; in addition, this design can also reduce the number of leakage points on the ball valve, preventing the fluid in the valve body 100 from leaking from the connection point between the valve body 100 and the valve cover, thereby ensuring the stability of the ball valve.

[0048] Figure 3 FIG. 1 shows a cross-sectional view of the valve body 100 provided in this embodiment. Figure 3 Combined with Figure 2As shown, a mounting groove 102 is provided on the inner wall of the first channel 101; the ball valve also includes a limiter 400, which is provided in the mounting groove 102 and is located on the side of the valve seat 200 away from the valve core 300. The limiter 400 can press the valve seat 200 against the valve core 300. By providing the mounting groove 102 in the valve body 100 and arranging the limiter 400 in the mounting groove 102, the limiter 400 can be used to limit the position of the valve seat 200 to ensure that there is sufficient pressing force between the valve seat 200 and the valve core 300, ensuring that the two can be sealed together; since the valve body 100 is additionally provided with the limiter 400 that can limit the valve seat 200, the valve body 100 does not need to adopt a precision casting process to form a corresponding limiter structure, thereby solving the problems of long production cycle and high production cost in the processing of stainless steel ball valves in the prior art.

[0049] Optionally, in this embodiment, the outer diameter of the valve body 100 is uniform throughout. This configuration allows the valve body 100 to be directly cut from pipe during processing, further reducing processing difficulty and processing costs, while also shortening production cycles and improving production efficiency. Furthermore, the valve body 100 is made of stainless steel pipe to avoid the problem of heavy metal precipitation caused by using a copper valve body, thereby ensuring the safety performance of the ball valve during use.

[0050] In this embodiment, the connection structure can be an internal thread provided on the valve body 100, and the valve body 100 is connected to the external pipeline via the threaded connection. This provides a simple structure, a stable connection, and easy assembly and disassembly. Of course, in other embodiments, the connection structure can also be an external thread provided on the valve body 100, or an internal thread provided on one end of the valve body 100 and an external thread provided on the other end of the valve body 100, so as to adapt to different types of external pipelines and improve the versatility of the ball valve.

[0051] like Figure 2-Figure 3As shown, the first channel 101 includes a first connecting channel 1011, an intermediate channel 1013, and a second connecting channel 1012, which are connected in sequence. A connecting structure is provided on the inner walls of the first connecting channel 1011 and the second connecting channel 1012. The valve seat 200, the valve core 300, and the stopper 400 are all installed in the intermediate channel 1013. The inner diameter of the first connecting channel 1011 is larger than the inner diameter of the intermediate channel 1013, and the inner diameter of the second connecting channel 1012 is larger than the inner diameter of the intermediate channel 1013. By setting the inner diameters of the first connecting channel 1011 and the second connecting channel 1012 larger than the inner diameter of the intermediate channel 1013, it is easier for the operator to machine internal threads on the inner walls of the first connecting channel 1011 and the second connecting channel 1012, leaving sufficient space for the tool to advance or retreat. The internal threads on the inner walls of the first connecting channel 1011 and the second connecting channel 1012 represent the aforementioned connecting structure. This embodiment does not limit the size and specific dimensions of the inner diameter of the first connecting channel 1011 and the inner diameter of the second connecting channel 1012. The operator can adjust the above dimensions according to the actual installation position of the ball valve to ensure that it can be installed accurately.

[0052] Optionally, the valve seat 200 is an annular rubber pad, which can fit tightly with the valve core 300 through its own deformation to achieve sealing between the two. The valve seat 200 made of rubber material can also reduce the wear between the two when the valve core 300 rotates, thereby extending the service life of the ball valve.

[0053] Figure 4 The exploded structure diagram of the ball valve provided by the embodiment of the present utility model is shown in FIG. Figure 4 Combined with Figure 2 、 Figure 3 As shown, to facilitate the installation of the stopper 400, the stopper 400 is made of an elastic material. During installation, the stopper 400 can be first compressed and inserted into the valve body 100 from one end. After being installed in place, the stopper 400 can also be firmly installed in the installation groove 102 under the action of its own elasticity to prevent it from falling off.

[0054] In some embodiments, the limit member 400 is an annular structure, and the limit member 400 is provided with a notch 401 extending through the limit member 400 in its radial direction. During installation, the operator can press the limit member 400 in the direction in which the size of the notch 401 of the limit member 400 decreases, so that its outer diameter decreases accordingly, thereby facilitating the limit member 400 to be installed into the valve body 100 from one end of the valve body 100; after installation, the limit member 400 can be reset in the direction in which the size of the notch 401 increases, so that it is firmly installed in the installation groove 102 to prevent it from falling off. Optionally, the limit member 400 is provided with matching holes 402 on both sides of the position where the notch 401 is provided. The operator can use a corresponding operating tool to clamp or loosen the limit member 400 through the matching holes 402, thereby installing the limit member 400 in the valve body 100, so as to achieve the effect of convenient installation and labor saving.

[0055] Specifically, the limiting member 400 in this embodiment is a retaining spring, which has a simple structure, is easy to process and assemble, and has a low cost.

[0056] Of course, in other embodiments, the limiting member 400 may also be a ring-shaped structure without the notch 401 , which can also achieve the above-mentioned effect.

[0057] It is understood that, because the stopper 400 is provided with a notch 401, if the stopper 400 directly contacts the valve seat 200, the valve seat 200 can easily deform at the position opposite the notch 401 of the stopper 400 under the combined extrusion of the valve core 300 and the stopper 400, thereby affecting the sealing between the valve seat 200 and the valve core 300. To address this problem, in this embodiment, a gasket 500 is provided between the stopper 400 and the valve seat 200. Specifically, the gasket 500 is an annular structure to allow the fluid in the first channel 101 to pass normally. The annular gasket 500 contacts the valve seat 200, ensuring uniform force on the valve seat 200 in the circumferential direction, thereby preventing deformation of the valve seat 200, further ensuring the sealing between the valve seat 200 and the valve core 300, and extending the service life of the valve seat 200.

[0058] Continue as Figure 2-Figure 4As shown, in this embodiment, there are two valve seats 200, which are located on both sides of the valve core 300, and each valve seat 200 corresponds to a limit member 400. During use, as the valve core 300 rotates, when one end of the second channel 301 on the valve core 300 is aligned with the through-hole 201 of one of the valve seats 200, and the other end of the second channel 301 is aligned with the through-hole 201 of the other valve seat 200, the fluid flow rate in the ball valve reaches a maximum; when one end of the second channel 301 on the valve core 300 is completely offset from the through-hole 201 of one of the valve seats 200, and the other end of the second channel 301 is completely offset from the through-hole 201 of the other valve seat 200, the ball valve is in a closed state. By providing two valve seats 200 in cooperation with the valve core 300 to realize the on-off of the fluid in the ball valve, the uniformity of the force on the valve seat 200 can be further ensured, thereby achieving a good sealing effect between the valve seat 200 and the valve core 300.

[0059] To achieve rotational adjustment of the valve core 300 within the valve body 100, the ball valve further includes an adjustment assembly 600, which includes a valve stem 610 and a handle 620. One end of the valve stem 610 can pass through the valve body 100 and connect to the valve core 300; the handle 620 is connected to the end of the valve stem 610 that faces away from the valve core 300. Rotating the handle 620 can drive the valve core 300 to rotate via the valve stem 610, thereby selectively opening and closing the first channel 101. During use, an operator can grasp the handle 620 and rotate it, thereby driving the valve core 300 to rotate via the valve stem 610, thereby opening and closing the first channel 101 or adjusting the flow of fluid through the first channel 101.

[0060] Optionally, a plug-in groove 302 is provided on the valve core 300, and one end of the valve stem 610 can be plugged into the plug-in groove 302 to achieve a fixed connection between the valve core 300 and the valve stem 610, which has a simple structure and is easy to assemble.

[0061] The regulating assembly 600 further includes a sleeve 630. The valve body 100 is provided with a mounting opening 104 that communicates with the first passage 101. The sleeve 630 is mounted in the mounting opening 104. The valve stem 610 is disposed within the sleeve 630 and is rotatable relative to the sleeve 630. Optionally, the sleeve 630 can be fixed to the valve body 100 by welding or threaded connection. This embodiment does not limit the connection method between the sleeve 630 and the valve body 100.

[0062] To prevent the fluid in the first channel 101 from leaking from the gap between the sleeve 630 and the valve stem 610 through the installation opening 104, at least one seal 640 is provided between the sleeve 630 and the valve stem 610. The seal 640 is specifically a rubber sealing ring, which has good sealing effect and low cost.

[0063] Optionally, the adjustment assembly 600 further includes a locking member 650. The end of the valve stem 610 away from the valve core 300 extends out of the sleeve 630. The handle 620 is sleeved on the end of the valve stem 610 extending out of the sleeve 630. The locking member 650 is mounted on the valve stem 610 and can clamp the handle 620 between the sleeve 630 and the locking member 650. In this embodiment, a screw segment is provided at the top of the valve stem 610. The locking member 650 is a nut. The handle 620 is sleeved on the valve stem 610, and the nut is screwed onto the screw segment, thereby mounting the handle 620 on the valve stem 610 and preventing the handle 620 from falling off the valve stem 610.

[0064] Figure 5 FIG. 1 shows a schematic structural diagram of the valve body 100 provided in this embodiment. Figure 5 and combined Figure 3 As shown, in order to limit the rotation angle of the handle 620, a first limiting portion 621 is provided on the handle 620, and a first limiting groove 105 corresponding to the first limiting portion 621 is provided on the outer wall of the valve body 100. When the first limiting portion 621 is limited in the first limiting groove 105, the fluid flow through the first channel 101 is maximum. At this time, the second channel 301 of the valve core 300 is directly opposite to the through hole 201 of the valve seat 200; a second limiting portion 622 is provided on the handle 620, and a second limiting groove 106 corresponding to the second limiting portion 622 is provided on the outer wall of the valve body 100. When the second limiting portion 622 is limited in the second limiting groove 106, the first channel 101 is closed. At this time, the second channel 301 of the valve core 300 is completely staggered with the through hole 201 of the valve seat 200.

[0065] Example 2

[0066] This embodiment provides a ball valve, the specific structure of which is substantially the same as that of the ball valve provided in the first embodiment, except that the number of the limiting members 400 is different.

[0067] Figure 6 FIG. 1 shows a cross-sectional view of the valve body 100 provided in this embodiment. Figure 6 and combined Figure 2 As shown, in this embodiment, there are two valve seats 200, one located on either side of the valve core 300. A stopper 400 is provided on the side of one of the valve seats 200 away from the valve core 300. An annular protrusion 103 is provided on the valve body 100 at the position corresponding to the other valve seat 200, and the annular protrusion 103 abuts against the valve seat 200. The annular protrusion 103 on the valve body 100 limits the position of the corresponding valve seat 200, so that the valve seat 200 on that side is pressed tightly against the valve core 300, thereby achieving a sealed fit between the two. This design can eliminate the need for a stopper 400, reducing assembly steps and processing costs.

[0068] Optionally, a gasket 500 may be provided between the annular protrusion 103 and the corresponding valve seat 200. However, since the annular protrusion 103 itself is a complete annular structure, its direct contact with the valve seat 200 can also ensure uniform force on the valve seat 200. Therefore, in this embodiment, the gasket 500 may not be provided between the annular protrusion 103 and the corresponding valve seat 200 to further reduce the processing cost of the ball valve.

[0069] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications are possible without departing from the spirit and scope of the present invention. Such changes and modifications are within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball valve, characterized in that: include: A valve body (100) is an integrated structure, and both ends of the valve body (100) are provided with connection structures for connecting to an external pipeline. The valve body (100) has a first channel (101) in communication with the external pipeline, and an installation groove (102) is provided on the inner wall of the first channel (101); A valve seat (200) is disposed in the valve body (100); a valve core (300) rotatably disposed in the valve body (100) and capable of cooperating with the valve seat (200) to selectively open and close the first channel (101); A limiting member (400) is arranged in the installation groove (102) and is located on a side of the valve seat (200) away from the valve core (300). The limiting member (400) can press the valve seat (200) against the valve core (300).

2. The ball valve according to claim 1, characterized in that The outer diameter of the valve body (100) is the same at all locations.

3. The ball valve according to claim 1, characterized in that The valve body (100) is made of a stainless steel pipe.

4. The ball valve according to claim 1, characterized in that The first channel (101) comprises a first connecting channel (1011), an intermediate channel (1013) and a second connecting channel (1012) which are connected in sequence; the connecting structure is provided on the inner walls of the first connecting channel (1011) and the second connecting channel (1012); the valve seat (200), the valve core (300) and the limiter (400) are all installed in the intermediate channel (1013); The inner diameter of the first connecting channel (1011) is greater than the inner diameter of the middle channel (1013), and the inner diameter of the second connecting channel (1012) is greater than the inner diameter of the middle channel (1013).

5. The ball valve according to claim 1, characterized in that The limiting member (400) is an annular structure, and a notch (401) penetrating along a radial direction of the limiting member (400) is provided on the limiting member (400).

6. The ball valve according to claim 5, characterized in that The limiting member (400) is provided with matching holes (402) on both sides of the position where the notch (401) is provided.

7. The ball valve according to claim 1, characterized in that A gasket (500) is provided between the limiting member (400) and the valve seat (200).

8. The ball valve according to claim 1, characterized in that The ball valve further comprises an adjusting assembly (600), wherein the adjusting assembly (600) comprises: a valve stem (610), one end of which can pass through the valve body (100) and be connected to the valve core (300); A handle (620) is connected to one end of the valve stem (610) away from the valve core (300). Rotating the handle (620) can drive the valve core (300) to rotate through the valve stem (610) to selectively open and close the first channel (101).

9. The ball valve according to claim 8, characterized in that The regulating assembly (600) further includes a sleeve (630); an outer wall of the valve body (100) is provided with a mounting opening (104) connected to the first channel (101); the sleeve (630) is welded to the mounting opening (104); the valve stem (610) is inserted into the sleeve (630) and can rotate relative to the sleeve (630).

10. The ball valve according to any one of claims 1 to 9, characterized in that: There are two valve seats (200), the two valve seats (200) are respectively located on both sides of the valve core (300), and each valve seat (200) corresponds to one limit member (400); or There are two valve seats (200), and the two valve seats (200) are respectively located on both sides of the valve core (300). The limiting member (400) is provided on the side of one of the valve seats (200) away from the valve core (300), and the valve body (100) is provided with an annular protrusion (103) at a position corresponding to the other valve seat (200), and the annular protrusion (103) is abutted against the valve seat (200).

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