A ball valve

Abstract

The utility model relates to valve technical field discloses a ball valve, including ball valve seat, ball, joint and fast plug subassembly, be provided with the cavity that penetrates in ball valve seat, be provided with passageway on the ball, the ball rotation is arranged in the cavity, to divide the cavity into the first area and the second area at the both sides of ball, the ball rotates to control the on-off of the first area and the second area through the passageway, the joint is set up in the first area of ball valve seat, and is linked with the cavity, fast plug subassembly is set up in the one end of the second area of ball valve seat. The fast plug subassembly is integrated on the ball valve, and the structure that originally needs to increase the connection fast plug becomes integrated, reduces the connection sealing point and unnecessary connecting fittings.

Description

Technical Field

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

[0002] Pre-filters can filter out sediment, rust, red worms, and other large particles from tap water. They are generally installed at the beginning of the pipe to prevent the large amount of sediment and impurities generated in urban and residential water supply networks from causing harm to the human body. They also play a positive role in protecting concealed pipes, faucets, plumbing, water heaters, boilers, central air conditioning, washing machines, dishwashers, coffee machines, and other water-related appliances. Therefore, they have gradually become more popular in recent years, with people purchasing and installing pre-filters during new renovations and pipeline upgrades.

[0003] Currently, pre-filters typically have a bottom channel for discharging filtered wastewater impurities. This channel generally uses a ball valve for on / off control and is connected to a drain pipe for manual discharge. However, the ball valve requires a threaded connection to a separate quick-connect fitting for rapid connection to the drain pipe. Adding an extra quick-connect fitting increases the number of sealing points, raising both accessory and installation costs. Therefore, there is an urgent need to design a ball valve to address these issues. Utility Model Content

[0004] The purpose of this utility model is to propose a ball valve that solves the technical problem in the prior art where the ball valve is connected separately to a quick-connect plug, which leads to an increase in sealing points, accessory costs, and installation costs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a ball valve, comprising:

[0007] A ball valve seat, wherein a through cavity is provided inside the ball valve seat;

[0008] A sphere having a channel on it is rotatably disposed within a cavity to divide the cavity into a first region and a second region located on both sides of the sphere. The sphere rotates to control the opening and closing of the first region and the second region through the channel.

[0009] A connector is disposed in the first region of the ball valve seat and communicates with the cavity;

[0010] A quick-connect assembly is disposed at one end of the ball valve seat in the second region.

[0011] The ball valve has a through-cavity within its ball seat, into which a ball rotates. The ball divides the cavity into a first region and a second region located on either side of the ball. The first region is the water contact area, and the second region is the sewage discharge area, which is not frequently in contact with water. The ball valve also includes a connector located within the first region of the ball seat and connected to the cavity. A quick-connect assembly is integrated into the ball valve at the end containing the second region, transforming the original structure requiring an additional quick-connect fitting into a single unit, reducing connection sealing points and unnecessary connecting accessories.

[0012] As a preferred embodiment of the aforementioned ball valve, the quick-connect assembly includes a quick-connect insert, which comprises:

[0013] The plug-in body has one end detachably connected to the ball valve seat;

[0014] The other end of the plug body is provided with multiple claws, which are spaced apart around the circumference of the plug body. Each claw has a protrusion on its inner side, and the protrusions of each claw form a discontinuous circular structure.

[0015] One end of the quick-connect body is detachably connected to the ball valve seat to install the quick-connect plug onto the ball valve seat. The claws are spaced apart around the circumference of the plug body, and the inner side of the claws is provided with protrusions. The protrusions of each claw form a discontinuous circular structure, thereby locking and limiting the plugged fitting.

[0016] As a preferred embodiment of the ball valve described above, a protruding ring is provided at one end of the insert body, and a groove is formed between the claw and the protruding ring; the quick-connect assembly further includes:

[0017] A fixed seat is sleeved on one end of the ball valve seat where the second region is provided, and the fixed seat is detachably connected to the ball valve seat; the claw extends into the ball valve seat through the fixed seat, and the protruding ring can abut against the fixed seat; a limiting member is provided in the fixed seat, the limiting member extends into the slot, and can move relative to the slot along the circumferential direction of the ball valve seat.

[0018] The mounting bracket is used to install the quick-connect fitting onto the ball valve seat.

[0019] As a preferred embodiment of the aforementioned ball valve, the fixed seat includes:

[0020] An annular cylinder, wherein an annular end cap is provided at one end of the annular cylinder;

[0021] The limiting member is an annular protrusion, which is disposed inside the annular cylinder and connected to the annular end cap. A slot is formed between the annular protrusion and the inner wall of the annular cylinder. The ball valve seat is inserted into the slot and engaged with the annular cylinder. The claw passes through the annular end cap and extends into the ball valve seat. The protruding ring abuts against the annular end cap.

[0022] The ball valve seat is inserted into the slot formed by the annular cylinder and the annular protrusion, and the ball valve seat is engaged with the annular cylinder, thereby engaging the fixed seat with the ball valve seat; the annular protrusion extends into the circumferential groove of the quick insert, which limits the displacement of the quick insert along the axial direction of the ball valve seat, thereby achieving the installation and positioning of the quick insert and preventing the quick insert from detaching from the fixed seat.

[0023] As a preferred embodiment of the ball valve described above, the connector or the inner structure of the connector is made of lead-free material.

[0024] The connector or the inner structure of the connector is made of lead-free material to avoid heavy metal pollution of water quality; the ball valve seat can be made of lead material. Since lead-free material is more expensive than lead material, and the material ratio in the sewage area is larger than that in the water contact area, by using different materials for the two areas, the area with a larger material ratio can more easily use conventional lead material, which greatly reduces the cost.

[0025] As a preferred embodiment of the aforementioned ball valve, the connector includes:

[0026] The connector body includes a connector portion and a connecting pipe. The connector portion is disposed on the outer periphery of one end of the connecting pipe. The connector portion is detachably connected to the ball valve seat, and the connecting pipe is connected to the ball valve seat.

[0027] A connecting sleeve is fitted onto the outside of the connecting pipe, and the connecting sleeve is provided with external threads in the circumferential direction.

[0028] The connector includes a connector body and a connecting sleeve. The connector body is detachably connected to the ball valve seat through the connector part. The connecting pipe is connected to the ball valve seat. The connecting sleeve is sleeved on the outside of the connecting pipe and has external threads in the circumference of the connecting sleeve to facilitate detachable connection with other assembly structures.

[0029] As a preferred embodiment of the ball valve described above, the connector, the connecting pipe, and the connecting sleeve are an integral structure, and the connector as a whole is made of the lead-free material.

[0030] The connector is a single, integrated structure made of lead-free material. This structure is simple and easy to manufacture.

[0031] As a preferred embodiment of the ball valve described above, the connector and the connecting pipe are an integral structure, both of which are made of plastic; the connecting sleeve and the connecting pipe are separate structures, and the connecting sleeve is made of metal.

[0032] The connector body and the connecting pipe are separate structures. The connector body is made of plastic material, while the connecting sleeve is made of metal material to improve the strength of the external thread.

[0033] As a preferred embodiment of the ball valve described above, the cross-section of the inner hole of the connector that communicates with the cavity is configured as a non-circular structure.

[0034] The above settings facilitate the assembly and disassembly of the connector using appropriate tools.

[0035] The beneficial effects of this utility model are:

[0036] The ball valve proposed in this utility model has a through cavity within the ball valve seat, and a ball is rotatably mounted within the cavity. The ball divides the cavity into a first region and a second region located on both sides of the ball. The ball valve also includes a connector, which is located within the first region of the ball valve seat and communicates with the cavity. A quick-connect assembly is provided at one end of the ball valve where the second region is located. That is, the quick-connect assembly is integrated into the ball valve, transforming the original structure that required an additional quick-connect connector into a one-piece design, reducing connection sealing points and unnecessary connecting accessories. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the ball valve provided by this utility model;

[0038] Figure 2 This is a side view of the ball valve provided by this utility model;

[0039] Figure 3 yes Figure 2 Sectional view along line AA;

[0040] Figure 4 This is a cross-sectional view of the ball valve seat provided by this utility model;

[0041] Figure 5 This is a schematic diagram of the connector provided by this utility model;

[0042] Figure 6 This is an exploded view of the ball valve provided by this utility model;

[0043] Figure 7 This is a schematic diagram of the first structure of the fixing base provided by this utility model;

[0044] Figure 8 This is a schematic diagram of the second structure of the fixing base provided by this utility model;

[0045] Figure 9 yes Figure 8 Sectional view along line BB;

[0046] Figure 10 This is a schematic diagram of the structure of the quick plug-in provided by this utility model.

[0047] In the picture:

[0048] 1. Ball valve seat; 111. First zone; 112. Second zone; 12. Mounting hole;

[0049] 2. Sphere; 21. Channel;

[0050] 3. Connector; 31. Connector body; 311. Connector part; 3111. Groove; 3112. Receiving groove; 312. Connecting pipe; 3121. Inner hole; 32. Connecting sleeve;

[0051] 4. Sealing gasket;

[0052] 5. First sealing ring;

[0053] 6. Connecting post; 61. Second sealing ring;

[0054] 7. Quick-connect assembly; 71. Fixing base; 711. Limiting component; 712. Annular cylinder; 713. Annular end cap; 714. Slot; 72. Quick-connect insert; 720. Slot; 721. Insert body; 722. Raised ring; 723. Claw; 724. Protrusion;

[0055] 8. Third sealing ring. Detailed Implementation

[0056] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0057] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0058] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0060] Example 1:

[0061] like Figures 1-3 As shown, this embodiment provides a ball valve, including a ball valve seat 1, a ball 2, a connector 3, and a quick-connect assembly 7. The ball valve seat 1 has a through cavity; the ball 2 has a channel 21, and the ball 2 is rotatably disposed in the cavity to divide the cavity into a first region 111 and a second region 112 located on both sides of the ball 2 (see...). Figure 3 and Figure 4 The ball 2 rotates to control the opening and closing of the first region 111 and the second region 112 through the channel 21; the quick-connect assembly 7 is disposed at one end of the ball valve seat 1 where the second region 112 is disposed, that is, the quick-connect assembly 7 is integrated on the ball valve, which transforms the original structure that required an additional quick-connect connector into an integrated unit, reducing the number of connection sealing points and unnecessary connection accessories.

[0062] Optionally, the connector 3 is detachably connected to the first region 111 of the ball valve seat 1 and communicates with the cavity. The connector 3 and the ball valve seat 1 are separate structures and can be made of different materials. The connector 3 or the inner structure of the connector 3 is made of lead-free material to avoid heavy metal pollution to the water. The ball valve seat 1 can be made of lead material. Since lead-free material is more expensive than lead material, and the material ratio of the sewage area is larger than that of the water contact area, by using different materials for the two areas, the area with a larger material ratio can more easily use conventional lead material, which greatly reduces the cost. Moreover, the separate structures are easier to manufacture.

[0063] like Figure 3 and Figure 5As shown, connector 3 includes connector body 31 and connecting sleeve 32. Connector body 31 includes connector portion 311 and connecting pipe 312. Connector portion 311 is provided on the outer periphery of one end of connecting pipe 312. Connector portion 311 is detachably connected to ball valve seat 1. Connecting pipe 312 is connected to ball valve seat 1. Connecting sleeve 32 is sleeved on the outside of connecting pipe 312 and has external threads in its circumference. Connector body 31 is detachably connected to ball valve seat 1 through connector portion 311. Connecting pipe 312 is connected to ball valve seat 1. Connecting sleeve 32 is sleeved on the outside of connecting pipe 312 and has external threads in its circumference to facilitate detachable connection with other assembly structures.

[0064] Optionally, the connector 311 is threadedly connected to the ball valve seat 1, achieving a detachable connection between the connector 311 and the ball valve seat 1. The threaded connection method has a simple structure and is relatively easy to disassemble. In this embodiment, the connector 311 is provided with an external thread, and one end of the ball valve seat 1 where the first region 111 is provided is provided with an internal thread. The connector 311 is threadedly connected to the ball valve seat 1 through the external thread, achieving a quick connection between the connector 311 and the ball valve seat 1.

[0065] Optionally, the connector 311, connecting pipe 312, and connecting sleeve 32 are integrated into one structure, and the connector 3 is made entirely of lead-free material. This structure is simple and easy to manufacture. The connector 3 can be made of lead-free brass or stainless steel, which does not cause heavy metal pollution to the water. The ball valve seat 1 can be made of low-cost, commonly used leaded brass to meet the needs of different scenarios and reduce costs.

[0066] To facilitate the fastening of connector 3 to the sewage discharge parts, a tightening position for easy application of a tightening wrench is provided on connector 3. The cross-section of the inner hole 3121 of connector 3, which communicates with the cavity, is set to a non-circular structure; that is, the inner hole 3121 of the connecting pipe 312 is set to a non-circular structure, to facilitate the assembly and disassembly of connector 3 using appropriate tools. Optionally, the cross-section of the inner hole 3121 can be elliptical, triangular, etc., with the dimensions of the inner hole 3121 being consistent along its length, or the inner hole 3121 can be set as a tapered structure whose dimensions gradually decrease towards the connector portion 311. In this embodiment, as... Figure 5 As shown, the cross-section of the inner hole 3121 (the inner hole 3121 of the connecting pipe 312) of the connector 3, which communicates with the cavity, is set to a hexagonal structure, and the size of the inner hole 3121 is consistent along the length direction of the inner hole 3121. The inner hole 3121 of the above shape has a simple structure and can be disassembled and assembled by common Allen wrenches.

[0067] like Figure 3As shown, sealing gaskets 4 are provided inside the ball valve seat 1 and on both sides of the ball 2. The ball 2 and the sealing gaskets 4 elastically abut against each other to seal the ball 2 and prevent water leakage from the gap between the ball valve seat 1 and the ball 2. A first sealing ring 5 is provided in the first area 111 and between the connector 3 and the sealing gasket 4. That is, a first sealing ring 5 is provided on one side of the ball 2 in the water contact area to improve the sealing performance of the pressure-bearing end of the ball valve.

[0068] Optionally, a groove 3111 is provided on the side of the connector 311 facing the ball 2, and the sealing gasket 4 located on the side of the ball 2 facing the connector 3 is accommodated in the groove 3111; a receiving groove 3112 is provided at the bottom of the groove 3111, and the first sealing ring 5 is accommodated in the receiving groove 3112. The groove 3111 and the ball valve seat 1 form a structure that limits the movement of the ball 2, preventing the ball 2 from moving freely. The receiving groove 3112 is used to accommodate and limit the first sealing ring 5, preventing the first sealing ring 5 from moving freely.

[0069] Optionally, the ball valve seat 1 is provided with a mounting hole 12 communicating with the cavity. The ball valve also includes a connecting rod 6, which extends into the ball valve seat 1 through the mounting hole 12 and is connected to the ball 2. The connecting rod 6 rotates relative to the mounting hole 12 to drive the ball 2 to rotate synchronously. The connection rod 6 enables the ball 2 to rotate synchronously, thereby controlling the opening and closing of the ball valve and facilitating operation. In this embodiment, the extension direction of the mounting hole 12 is perpendicular to the extension direction of the cavity, that is, when the connecting rod 6 is installed in the mounting hole 12, it is perpendicular to the axis of the ball valve seat 1.

[0070] To prevent water leakage from the gap between the connecting column 6 and the mounting hole 12 of the ball valve seat 1, a second sealing ring 61 is provided between the connecting column 6 and the ball valve seat 1. The connecting column 6 has a mounting groove circumferentially provided, and the second sealing ring 61 is fitted onto the connecting column 6 and housed within the mounting groove, preventing the second sealing ring 61 from shifting arbitrarily. Preferably, multiple second sealing rings 61 are provided, and these multiple second sealing rings 61 are arranged at intervals along the axial direction of the connecting column 6 to enhance the sealing effect. In this embodiment, two second sealing rings 61 are provided, and the two second sealing rings 61 are arranged at intervals along the axial direction of the connecting column 6 to achieve a better sealing effect. In other embodiments, the number of second sealing rings 61 is not limited to two; it can also be one, three, or more, depending on the requirements.

[0071] To facilitate the opening and closing control of the ball valve, a handle (not shown in the figure) is installed on the connecting column 6. By rotating the handle, the connecting column 6 and the ball 2 are rotated, thereby realizing the opening and closing control of the ball valve.

[0072] like Figure 3 , Figure 6 and Figure 10As shown, the quick-connect assembly 7 includes a quick-connect plug 72, which includes a plug body 721 and a locking claw 723. One end of the plug body 721 is detachably connected to the ball valve seat 1. The other end of the plug body 721 is provided with multiple locking claws 723, which are spaced apart circumferentially along the plug body 721. Each locking claw 723 has a protrusion 724 on its inner side, and the protrusions 724 of each locking claw 723 form a discontinuous circular structure, thereby locking and limiting the plugged-in pipe fitting.

[0073] Furthermore, a protruding ring 722 is provided at one end of the plug-in body 721, and a groove 720 is formed between the claw 723 and the protruding ring 722. The quick-connect assembly 7 also includes a fixing seat 71, which is sleeved on one end of the ball valve seat 1 where the second region 112 is provided, and the fixing seat 71 is detachably connected to the ball valve seat 1. The claw 723 extends into the ball valve seat 1 through the fixing seat 71, and the protruding ring 722 can abut against the fixing seat 71. A limiting member 711 is provided in the fixing seat 71, which extends into the groove 720 and can move relative to the groove 720 in the circumferential direction of the ball valve seat 1, that is, the limiting member 711 limits the movement of the quick-connect plug 72 in the axial direction of the ball valve seat 1. The fixing seat 71 of the quick-connect assembly 7 is used to install the quick-connect plug 72 on the ball valve seat 1, and the quick-connect plug 72 is used to realize quick insertion with pipes, etc.

[0074] To improve the sealing effect between the quick-connect assembly 7 and the ball valve seat 1, a third sealing ring 8 is provided in the second region 112 between the protrusion of the ball valve seat 1 and the quick-connect assembly 7 (see...). Figure 3 A better sealing effect is achieved through the third sealing ring 8.

[0075] Furthermore, such as Figures 7-9As shown, the fixed base 71 includes an annular cylinder 712, with an annular end cap 713 at one end; the limiting member 711 is an annular protrusion, which is disposed inside the annular cylinder 712 and connected to the annular end cap 713. A slot 714 is formed between the annular protrusion and the inner wall of the annular cylinder 712. The ball valve seat 1 is inserted into the slot 714 and engaged with the annular cylinder 712. The claw 723 passes through the annular end cap 713 and extends into the ball valve seat 1. The protruding ring 722 abuts against the annular end cap 713. The annular protrusion extends into the slot 720, and the claw 723 can move relative to the limiting member 711 along the axial direction of the ball valve seat 1 in its natural state. The ball valve seat 1 is inserted into the slot 714 formed by the annular cylinder 712 and the annular protrusion, and the ball valve seat 1 and the annular cylinder 712 are engaged, thereby engaging the fixed seat 71 onto the ball valve seat 1. The annular protrusion extends into the circumferential groove 720 of the quick-connect insert 72, which limits the displacement of the quick-connect insert 72 along the axial direction of the ball valve seat 1, thereby achieving the installation and positioning of the quick-connect insert 72 and preventing the quick-connect insert 72 from detaching from the fixed seat 71. For example, the inner wall of the annular cylinder 712 is provided with a protruding structure (not shown in the figure), and the outer periphery of the ball valve seat 1 is provided with a snap-fit ​​groove. The protruding structure extends into the snap-fit ​​groove, thereby achieving the snap-fit ​​between the fixed seat 71 and the ball valve seat 1.

[0076] It should be noted that when the quick-connect fitting 72 is not connected to a pipe fitting, each claw 723 is in its natural state, and the quick-connect fitting 72 can move relative to the limiting member 711 along the axial direction of the ball valve seat 1; when the quick-connect fitting 72 is connected to a pipe fitting, each claw 723 is deformed and opened, and the claw 723 can abut against the limiting member 711. At this time, the quick-connect fitting 72 can move relative to the limiting member 711.

[0077] The ball valve moves the original internal plug connection to the front end (i.e., one end of the ball valve seat 1 with the connector 3), achieving regional separation of lead-free components without increasing leakage points.

[0078] The ball valve integrates a quick-connect assembly 7, transforming the original structure that required additional quick-connect fittings into a single integrated unit, thereby reducing connection sealing points and unnecessary connecting accessories.

[0079] Example 2:

[0080] This embodiment provides a ball valve. The structure of the connector 3 in this embodiment is different from that in the first embodiment. In the first embodiment, the entire connector 3 is an integral structure made of lead-free material. In this embodiment, the connector part 311 and the connecting pipe 312 are integral structures, that is, the connector body 31 is an integral structure. Both the connector part 311 and the connecting pipe 312 are made of plastic material. The connecting sleeve 32 and the connecting pipe 312 are separate structures. The connecting sleeve 32 is made of metal material to improve the strength of the external thread of the connector 3.

[0081] The other structures of the ball valve in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0082] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A ball valve, characterized in that, include: Ball valve seat (1), wherein a through cavity is provided inside the ball valve seat (1); A sphere (2) is provided with a channel (21). The sphere (2) is rotatably disposed in the cavity to divide the cavity into a first region (111) and a second region (112) located on both sides of the sphere (2). The sphere (2) is rotated to control the opening and closing of the first region (111) and the second region (112) through the channel (21). Connector (3), the connector (3) is disposed in the first region (111) of the ball valve seat (1) and is connected to the cavity; Quick-connect assembly (7) is disposed at one end of the ball valve seat (1) in the second region (112).

2. The ball valve according to claim 1, characterized in that, The quick-connect assembly (7) includes a quick-connect plug (72), which includes: The plug-in body (721) has one end detachably connected to the ball valve seat (1); The other end of the plug-in body (721) is provided with multiple claws (723). The multiple claws (723) are arranged at intervals along the circumference of the plug-in body (721). Each claw (723) has a protrusion (724) on its inner side. The protrusion (724) of each claw (723) forms a discontinuous circular structure.

3. The ball valve according to claim 2, characterized in that, A protruding ring (722) is provided at one end of the plug body (721), and a groove (720) is formed between the claw (723) and the protruding ring (722). The quick-connect assembly (7) also includes a fixing seat (71), which is sleeved on one end of the ball valve seat (1) where the second region (112) is provided, and the fixing seat (71) is detachably connected to the ball valve seat (1); the claw (723) passes through the fixing seat (71) and extends into the ball valve seat (1), and the protruding ring (722) can abut against the fixing seat (71); The fixed seat (71) is provided with a limiting member (711), which extends into the slot (720) and can move relative to the slot (720) along the circumferential direction of the ball valve seat (1).

4. The ball valve according to claim 3, characterized in that, The mounting base (71) includes: An annular cylinder (712), one end of which is provided with an annular end cap (713); The limiting member (711) is an annular protrusion. The annular protrusion is disposed inside the annular cylinder (712) and connected to the annular end cap (713). A slot (714) is formed between the annular protrusion and the inner wall of the annular cylinder (712). The ball valve seat (1) is inserted into the slot (714) and engaged with the annular cylinder (712). The claw (723) passes through the annular end cap (713) and extends into the ball valve seat (1). The protruding ring (722) abuts against the annular end cap (713).

5. The ball valve according to claim 1, characterized in that, The connector (3) is detachably connected to the first region (111) of the ball valve seat (1) and communicates with the cavity.

6. The ball valve according to claim 5, characterized in that, The connector (3) or the inner structure of the connector (3) is made of lead-free material.

7. The ball valve according to claim 6, characterized in that, The connector (3) includes: The connector body (31) includes a connector part (311) and a connecting pipe (312). The connector part (311) is provided on the outer periphery of one end of the connecting pipe (312). The connector part (311) is detachably connected to the ball valve seat (1). The connecting pipe (312) is connected to the ball valve seat (1). A connecting sleeve (32) is fitted onto the outside of the connecting pipe (312), and the connecting sleeve (32) is provided with external threads in the circumferential direction.

8. The ball valve according to claim 7, characterized in that, The connector (311), the connecting pipe (312) and the connecting sleeve (32) are an integral structure, and the connector (3) is made entirely of the lead-free material.

9. The ball valve according to claim 7, characterized in that, The connector (311) and the connecting pipe (312) are an integral structure, and both the connector (311) and the connecting pipe (312) are made of plastic material; the connecting sleeve (32) and the connecting pipe (312) are separate structures, and the connecting sleeve (32) is made of metal material.

10. The ball valve according to any one of claims 1-9, characterized in that, The cross-section of the inner hole (3121) of the connector (3) that communicates with the cavity is set to a non-circular structure.

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