Stop valve and manufacturing method

Abstract

The invention provides a stop valve and a manufacturing method, the stop valve comprises a valve main body, a nut joint and a valve core, the valve main body comprises a valve body, a first pipe head and a second pipe head, a valve port is arranged in the valve body, and the first pipe head and the second pipe head are coaxially arranged; the nut connector is located on the periphery of the second pipe head and is in threaded connection with the second pipe head. The valve element is movably installed in the first pipe head and can be far away from or abut against the valve port in the axial direction of the valve element, and the valve port and the second pipe head are coaxially arranged. According to the scheme, when the nut connector is connected with the second pipe head, the nut connector applies torsional moment to the second pipe head, the moment can be transmitted to act on the valve port, and due to the fact that the valve port and the second pipe head are coaxially arranged in the scheme, the annular sealing line, matched with the valve element, in the valve port is coaxial with the second pipe head; in this way, the applied torque is evenly distributed on the valve port in the whole circumferential direction, the valve port is not prone to deformation, namely, the annular sealing line is not prone to deformation, and the sealing effect of the stop valve is guaranteed when the stop valve is closed.

Description

Technical Field

[0001] The present invention relates to the technical field of stop valves, and in particular to a stop valve and a manufacturing method thereof. Background Art

[0002] In the stop valve for air conditioners, the valve body of the stop valve is usually formed by high-temperature stamping of a mold. During stamping, some areas are subject to large flow deformation, which can easily lead to cracking or substandard strength, resulting in low yield and high production costs. In the prior art, there are some valve bodies formed by cutting to avoid the problems of stamping. In existing stop valves, the axial direction of the valve port is usually perpendicular to the axial direction of the pipe joint provided with a nut (which is connected to the external pipeline by the nut). In this way, when a torsional torque is applied to the pipe joint by the nut, the torque will be transmitted to the valve port, and different positions around the valve port are subjected to uneven torque force, which can easily cause deformation of the valve port, thereby causing the sealing between the valve core and the valve port to fail. Summary of the Invention

[0003] The present invention provides a stop valve and a manufacturing method thereof, so as to alleviate the problem of easy sealing failure of the stop valve in the prior art.

[0004] In order to solve the above problems, according to one aspect of the present invention, the present invention provides a stop valve, including: a valve body, the valve body including a valve body, a first tube head and a second tube head, a valve port is provided in the valve body, and the first tube head and the second tube head are coaxially arranged; a nut joint, the nut joint is located on the outer periphery of the second tube head, and the nut joint is threadedly connected to the second tube head; a valve core, movably installed in the first tube head, along the axial direction of the valve core, the valve core can move away from or abut the valve port, and the valve port is coaxially arranged with the second tube head.

[0005] Furthermore, the valve body has a first interface and a second interface; the stop valve also includes: a connecting pipe, one end of which extends into the second interface, the connecting pipe is connected to the valve body, and the connecting pipe is connected or disconnected with the second pipe head through the valve core away from or abutting the valve port; a valve assembly, installed on the first interface, and the valve assembly is used to connect or disconnect the outside with the inside of the valve body.

[0006] Furthermore, the valve body is an integrated structure, the valve body is a hexahedron, the first tube head and the second tube head are respectively located on opposite sides of the valve body, the first interface and the second interface are respectively located on opposite sides of the valve body, the first tube head, the second tube head, the first interface, and the second interface are respectively located on different sides of the valve body; the first tube head and the second tube head are respectively protruding outward from different sides of the valve body, and the first interface and the second interface are respectively recessed inward from different sides of the valve body.

[0007] Furthermore, the first interface and the second interface are coaxially arranged, and the axis of the first pipe head is perpendicular to the axis of the connecting pipe.

[0008] Furthermore, the valve assembly includes a valve nozzle and a valve core. One end of the valve nozzle extends into the first interface, and the valve nozzle is connected to the valve body. The valve core is movably arranged in the valve nozzle to open and close the valve nozzle.

[0009] Furthermore, a plurality of connection holes are provided on one side of the valve body, the connection holes and the second interface are located on the same side of the valve body, the connection holes are located on the outer periphery of the second interface, and the connection holes are used to connect with fasteners to fix the valve body;

[0010] Alternatively, the valve body further includes a flange, and the flange, the first pipe head, the second pipe head, the first interface, and the second interface are respectively located on different sides of the valve body, and the flange is used to connect with a fastener to fix the valve body.

[0011] According to one aspect of the present invention, there is provided a manufacturing method for processing the above-mentioned stop valve, the manufacturing method comprising: forming a profile raw material through an extrusion molding process, cutting the profile raw material into profile rods of a set length as the raw material for processing the valve body; cutting a first tube head and a second tube head at both ends of the profile rod in the length direction, respectively, forming a valve body between the first tube head and the second tube head; processing a valve port in the valve body, and processing a first interface and a second interface on different sides of the valve body; installing the valve core on the first tube head, installing the valve assembly on the first interface, installing the connecting pipe on the second interface, and sleeved the nut joint on the outer periphery of the second tube head and threadedly connected to the second tube head.

[0012] Furthermore, cutting the first tube head includes processing the outer surface shape of the first tube head and the first channel in the first tube head; cutting the second tube head includes processing the outer surface shape of the second tube head and the second channel in the second tube head; the first interface and the second interface are formed by cutting inward from two opposite sides of the valve body, or cutting inward from one side of the valve body to form the first interface and the second interface that are mutually connected; wherein, the first channel in the first tube head, the second channel in the second tube head and the valve port are coaxially processed.

[0013] Furthermore, installing the valve assembly on the first interface includes: extending the valve nozzle of the valve assembly into the first interface, and then welding the valve nozzle and the valve body; installing the connecting pipe on the second interface includes: extending one end of the connecting pipe into the second interface, and then welding the connecting pipe and the valve body; installing the valve core on the first pipe head includes: putting a sealing ring on the outer wall of the valve core, and then passing the valve core into the first pipe head, and matching the external thread of the valve core with the internal thread in the first pipe head.

[0014] Furthermore, the profile rod is in a rectangular shape, and the manufacturing method further includes: processing a plurality of connection holes on the side of the valve body, and the connection holes are used to connect with fasteners to fix the valve body.

[0015] Furthermore, the profile rod includes a rectangular main body and a convex plate connected to the side of the main body, wherein the main body serves as the raw material for processing the first pipe head, the second pipe head and the valve body. The manufacturing method also includes: cutting the convex plate into a flange, and drilling a matching hole through the flange. The flange is used to connect with a fastener to fix the valve body.

[0016] The technical solution of the present invention is applied to provide a stop valve, comprising: a valve body, a nut joint and a valve core, the valve body comprising a valve body, a first pipe head and a second pipe head, a valve port being provided in the valve body, the first pipe head and the second pipe head being coaxially arranged; the nut joint being located on the outer periphery of the second pipe head, the nut joint being threadedly connected to the second pipe head; the valve core being movably installed in the first pipe head, the valve core being able to move away from or abut the valve port along the axial direction of the valve core, the valve port being coaxially arranged with the second pipe head. In this solution, when the nut joint and the second pipe head are connected, the nut joint applies a torsional torque to the second pipe head, and the torque is transmitted to the valve port. Since the valve port and the second pipe head in this solution are coaxially arranged, the annular sealing line in the valve port that cooperates with the valve core is coaxial with the second pipe head, so that the torque applied is relatively evenly distributed in the entire circumference of the valve port, the valve port is not easily deformed, that is, the annular sealing line is not easily deformed, thereby ensuring the sealing effect of the stop valve when closing the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 A schematic structural diagram of a stop valve provided in the first embodiment of the present invention is shown;

[0019] Figure 2 Shown Figure 1 A cross-sectional view of the stop valve in FIG.

[0020] Figure 3 Shown Figure 1 Schematic diagram of the structure of the valve body;

[0021] Figure 4 It shows a schematic structural diagram of a stop valve provided in the second embodiment of the present invention;

[0022] Figure 5 Shown Figure 4 A cross-sectional view of the stop valve in FIG.

[0023] Figure 6 Shown Figure 4 Schematic diagram of the structure of the valve body;

[0024] Figure 7 A schematic diagram of the profile bar used to machine the valve body is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Valve body; 11. Valve body; 111. First interface; 112. Second interface; 113. Valve port; 114. Connecting hole; 115. Annular sealing line; 12. First pipe head; 13. Second pipe head; 14. Flange; 141. Matching hole; 20. Valve core; 30. Valve assembly; 31. Valve nozzle; 32. Valve core; 40. Nut joint; 50. Connecting pipe. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 3 As shown, embodiment 1 of the present invention provides a stop valve, including: a valve body 10, the valve body 10 includes a valve body 11, a first tube head 12 and a second tube head 13, a valve port 113 is provided in the valve body 11, and the first tube head 12 and the second tube head 13 are coaxially arranged; a nut joint 40, the nut joint 40 is located on the outer periphery of the second tube head 13, and the nut joint 40 is threadedly connected to the second tube head 13; a valve core 20, which is movably installed in the first tube head 12, and along the axial direction of the valve core 20, the valve core 20 can be away from or abut the valve port 113, and the valve port 113 is coaxially arranged with the second tube head 13.

[0029] In this solution, when the nut joint 40 and the second tube head 13 are connected, the nut joint 40 applies a torsional torque to the second tube head 13, and the torque will be transmitted to the valve port 113. Since the valve port 113 and the second tube head 13 in this solution are coaxially arranged, the annular sealing line 115 in the valve port 113 that cooperates with the valve core 20 is coaxial with the second tube head 13. The torque applied in this way converts the shear force originally applied to the valve port 113 into a torsional force, and the valve port 113 is subjected to a more uniform force and is not easily deformed, that is, the annular sealing line 115 is not easily deformed. When the valve is closed, the annular sealing line 115 is in full contact with the valve core 20, thereby ensuring the sealing effect of the stop valve when closing the valve.

[0030] In this embodiment, the valve body 11 has a first interface 111 and a second interface 112; the stop valve also includes: a connecting pipe 50, one end of which extends into the second interface 112, the connecting pipe 50 is connected to the valve body 11, and the connecting pipe 50 is connected or disconnected with the second pipe head 13 through the valve core 20 away from or abutting the valve port 113; the valve assembly 30 is installed on the first interface 111, and the valve assembly 30 is used to connect or disconnect the outside with the inside of the valve body 11.

[0031] Connecting pipe 50 is used to connect to other pipes or devices. When valve core 20 is removed from valve port 113, valve port 113 opens, and the pipe or device connected to connecting pipe 50 is connected to second pipe head 13, thereby allowing fluid to flow. When valve assembly 30 is open, valve body 11 is connected to the external environment, allowing fluid to be injected into valve body 11 or gas within valve body 11 to be exhausted.

[0032] Specifically, the valve body 10 is an integrated structure, the valve body 11 is a hexahedron, the first tube head 12 and the second tube head 13 are respectively located on opposite sides of the valve body 11, the first interface 111 and the second interface 112 are respectively located on opposite sides of the valve body 11, the first tube head 12, the second tube head 13, the first interface 111, and the second interface 112 are respectively located on different sides of the valve body 11; the first tube head 12 and the second tube head 13 are respectively protruded outward from different sides of the valve body 11, and the first interface 111 and the second interface 112 are respectively recessed inward from different sides of the valve body 11.

[0033] The valve body 10 is set as an integrated structure, which ensures the overall structural strength of the valve body 10 and is not easy to deform. In this solution, the valve body 11 adopts a hexahedral structure, which is convenient for processing using cutting, extrusion molding and other processes, replacing the traditional stamping molding process, avoiding the problems caused by stamping molding, and improving the product yield rate; the valve assembly 30 and other structures can be set through the first interface 111 and the second interface 112, that is, the valve assembly 30 and other structures are separate structures from the valve body 10, which avoids the excessive concave and convex structures of the valve body 10 that lead to a large amount of cutting work, reduces the material consumption and cutting amount of the valve body 10, and reduces the processing cost.

[0034] The first pipe head 12, second pipe head 13, first port 111, and second port 112 are located on different sides of the valve body 11. This facilitates the placement of various structures and prevents interference with other structures on the stop valve mounting plate on unlocated sides of the valve body 11. The location and placement of the various structures on the valve body 11 can be selected as needed.

[0035] Specifically, the first port 111 and the second port 112 are coaxially arranged, with the axis of the first pipe head 12 perpendicular to the axis of the connecting pipe 50. Thus, the four side surfaces of the first pipe head 12, the second pipe head 13, the first port 111, and the second port 112 form an annular area. That is, the first pipe head 12, the second pipe head 13, the first port 111, and the second port 112 are distributed along the circumference of the valve body 11, resulting in a small space occupied by the stop valve. Furthermore, the valve body 11 adopts a hexahedral structure, which is easy to cut and process.

[0036] like Figure 2 As shown, one end of the valve core 20 is a tapered head, and an annular sealing step is provided within the valve port 113. The tapered head and the annular sealing step form a sealing engagement, and an annular sealing line 115 is located within the annular sealing step. The tapered head serves as a guide, and the cooperation between the tapered head and the annular sealing step ensures a good sealing effect.

[0037] The valve core 20 is connected to the inner wall of the first tube head 12 through a thread. There is a hexagonal countersunk hole in the valve core 20, so that an inner hexagonal wrench can be inserted to rotate the valve core 20, thereby causing the valve core 20 to move axially and abut against the valve port 113 to open and close the valve port 113.

[0038] In this embodiment, the valve assembly 30 includes a valve stem 31 and a valve core 32. One end of the valve stem 31 extends into the first port 111 and is connected to the valve body 11. The valve core 32 is movably disposed within the valve stem 31 to open and close the valve stem 31. When the valve stem 31 is open, it communicates with the cavity within the valve body 11. A stop step is provided within the first port 111 to limit the depth to which one end of the valve stem 31 can extend into the first port 111.

[0039] The valve stem 31 and the valve body 11 can be connected by welding. The welding method has high structural strength and good sealing performance.

[0040] One end of the connecting pipe 50 extends into the second port 112, and the connecting pipe 50 is welded to the valve body 11. The connecting pipe 50 is used to connect to other pipelines and is welded to the valve body 11, providing high structural strength and excellent sealing. A stop step is provided within the second port 112 to limit the depth to which the end of the connecting pipe 50 extends into the second port 112.

[0041] like Figure 3 As shown, a plurality of connecting holes 114 are provided on one side of the valve body 11. The connecting holes 114 and the second interface 112 are located on the same side of the valve body 11. The connecting holes 114 are located on the outer periphery of the second interface 112. The connecting holes 114 are used to connect with fasteners to fix the valve body 11; thus, the stop valve is fixed.

[0042] In this embodiment, the material of the valve body 10 is aluminum alloy, copper alloy or stainless steel, which can be selected according to specific needs.

[0043] like Figures 4 to 6 As shown, in the second embodiment, unlike the first embodiment, the valve body 10 further includes a flange 14. The flange 14, the first pipe head 12, the second pipe head 13, the first interface 111, and the second interface 112 are respectively located on different sides of the valve body 11. The flange 14 has a matching hole 141, and the flange 14 is used to connect with a fastener to fix the valve body 11.

[0044] Specifically, the valve body 11 is a hexahedron, and there are two flanges 14 distributed on two opposite sides of the valve body 11. In this way, all six sides of the valve body 11 are utilized, and the stop valve is firmly fixed.

[0045] The present invention also provides a manufacturing method for processing the above-mentioned stop valve, the manufacturing method comprising: forming a profile raw material through an extrusion molding process, cutting the profile raw material into a profile rod of a set length as the raw material for processing the valve body 10; cutting and processing a first tube head 12 and a second tube head 13 at both ends of the profile rod in the length direction, forming a valve body 11 between the first tube head 12 and the second tube head 13; processing a valve port 113 in the valve body 11, and processing a first interface 111 and a second interface 112 on different sides of the valve body 11; installing the valve core 20 on the first tube head 12, installing the valve assembly 30 on the first interface 111, installing the connecting pipe 50 on the second interface 112, and sleeved the nut joint 40 on the outer periphery of the second tube head 13 and threadedly connected to the second tube head 13. The material for the extrusion molding process is preferably aluminum alloy, which is low in cost and easy to form.

[0046] In this method, an extruded profile is used as the raw material for the valve body 10, which is then machined through cutting. This not only enhances the structural strength of the valve body 10 but also makes it easier to machine with minimal cutting effort, thereby ensuring a high yield rate and low manufacturing costs. A first tube head 12 and a second tube head 13 are machined at each end of the profile rod in the longitudinal direction. This results in a one-piece valve body 10 with minimal cutting effort and high machining efficiency.

[0047] Specifically, cutting the first tube head 12 includes machining the outer surface shape of the first tube head 12 and the first channel within the first tube head 12; cutting the second tube head 13 includes machining the outer surface shape of the second tube head 13 and the second channel within the second tube head 13; the first interface 111 and the second interface 112 are formed by cutting inward from two opposing sides of the valve body 11, or by cutting inward from one side of the valve body 11 to form the first interface 111 and the second interface 112 that are interconnected. Cutting results in high product precision, avoids problems caused by stamping processes, and has a high yield rate. Furthermore, through the above-mentioned processing method, all sides of the valve body 11 are fully utilized.

[0048] The first channel in the first tube head 12, the second channel in the second tube head 13, and the valve port 113 are coaxially machined. When the nut joint 40 applies a torsional torque to the second tube head 13, the torque is transmitted to the valve port 113. Since the valve port 113 and the second tube head 13 in this solution are coaxially arranged, the annular sealing line 115 in the valve port 113 that cooperates with the valve core 20 is coaxial with the second tube head 13. In this way, the applied torque is distributed more evenly over the entire circumference of the valve port 113, and the valve port 113 is not easily deformed, that is, the annular sealing line 115 is not easily deformed. When the valve is closed, the annular sealing line 115 is in reliable contact with the valve core 20, ensuring the sealing effect of the stop valve when the valve is closed.

[0049] Furthermore, installing the valve assembly 30 on the first interface 111 includes inserting the valve nozzle 31 of the valve assembly 30 into the first interface 111 and then welding the valve nozzle 31 to the valve body 11. Installing the connecting pipe 50 on the second interface 112 includes inserting one end of the connecting pipe 50 into the second interface 112 and then welding the connecting pipe 50 to the valve body 11. Installing the valve core 20 on the first pipe head 12 includes fitting a sealing ring on the outer wall of the valve core 20, inserting the valve core 20 into the first pipe head 12, and mating the external thread of the valve core 20 with the internal thread of the first pipe head 12. Welding the valve nozzle 31 and the connecting pipe 50 provides high strength and good sealing.

[0050] When this manufacturing method corresponds to the stop valve in the first embodiment, the profile rod is a rectangular parallelepiped, and the manufacturing method further includes: processing a plurality of connecting holes 114 on the side of the valve body 11, and the connecting holes 114 are used to connect with fasteners to fix the valve body 11.

[0051] like Figure 7As shown, when this manufacturing method corresponds to the stop valve in Example 2, the profile bar includes a rectangular main body and a raised plate connected to the side of the main body. The main body serves as the raw material for processing the first pipe head 12, the second pipe head 13, and the valve body 11. The manufacturing method also includes cutting the raised plate into a flange 14, and drilling a mating hole 141 through the flange 14. The flange 14 is used to connect with a fastener to secure the valve body 11. In other words, the shape of the profile stock is the shape required for processing the valve body 11, ensuring that the cutting amount is minimized, saving materials and costs, and improving processing efficiency.

[0052] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0055] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0057] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

Claims

1. A stop valve, characterized in that: include: A valve body (10), the valve body (10) comprising a valve body (11), a first pipe head (12) and a second pipe head (13), a valve port (113) being arranged in the valve body (11), and the first pipe head (12) and the second pipe head (13) being arranged coaxially; a nut joint (40), the nut joint (40) being located on the outer periphery of the second pipe head (13), the nut joint (40) being threadedly connected to the second pipe head (13); The valve core (20) is movably installed in the first tube head (12); along the axial direction of the valve core (20), the valve core (20) can move away from or abut against the valve port (113); and the valve port (113) is coaxially arranged with the second tube head (13).

2. The stop valve according to claim 1, characterized in that: The valve body (11) has a first interface (111) and a second interface (112); the stop valve further comprises: a connecting pipe (50), one end of which extends into the second interface (112), the connecting pipe (50) being connected to the valve body (11), the connecting pipe (50) being connected to or disconnected from the second pipe head (13) by the valve core (20) being away from or abutting against the valve port (113); A valve assembly (30) is installed on the first interface (111), and the valve assembly (30) is used to connect or disconnect the outside with the inside of the valve body (11).

3. The stop valve according to claim 2, characterized in that: The valve body (10) is an integral structure, the valve body (11) is a hexahedron, the first pipe head (12) and the second pipe head (13) are respectively located on two opposite sides of the valve body (11), the first interface (111) and the second interface (112) are respectively located on two opposite sides of the valve body (11), and the first pipe head (12), the second pipe head (13), the first interface (111), and the second interface (112) are respectively located on different sides of the valve body (11); The first pipe head (12) and the second pipe head (13) are respectively formed by protruding outwards from different side surfaces of the valve body (11), and the first interface (111) and the second interface (112) are respectively formed by being recessed inwards from different side surfaces of the valve body (11).

4. The stop valve according to claim 3, characterized in that: The first interface (111) and the second interface (112) are coaxially arranged, and the axis of the first pipe head (12) is perpendicular to the axis of the connecting pipe (50).

5. The stop valve according to claim 2, characterized in that: The valve assembly (30) comprises a valve nozzle (31) and a valve core (32); one end of the valve nozzle (31) extends into the first interface (111), and the valve nozzle (31) is connected to the valve body (11); the valve core (32) is movably arranged in the valve nozzle (31) to open and close the valve nozzle (31).

6. The stop valve according to claim 2, characterized in that: A plurality of connection holes (114) are provided on one side of the valve body (11); the connection holes (114) and the second interface (112) are located on the same side of the valve body (11); the connection holes (114) are located on the outer periphery of the second interface (112); and the connection holes (114) are used to be connected to a fastener to fix the valve body (11); Alternatively, the valve body (10) further comprises a flange (14); the flange (14), the first pipe head (12), the second pipe head (13), the first interface (111), and the second interface (112) are respectively located on different sides of the valve body (11); and the flange (14) is used to be connected to a fastener so as to fix the valve body (11).

7. A manufacturing method, characterized in that: For processing the stop valve according to any one of claims 1 to 6, the manufacturing method comprises: Forming a profile material through an extrusion molding process, and cutting the profile material into profile rods of a set length as a raw material for processing the valve body (10); A first tube head (12) and a second tube head (13) are respectively cut and processed at both ends of the profile rod in the length direction, and a valve body (11) is formed between the first tube head (12) and the second tube head (13); A valve port (113) is machined in the valve body (11), and a first interface (111) and a second interface (112) are machined on different sides of the valve body (11); The valve core (20) is installed on the first pipe head (12), the valve assembly (30) is installed on the first interface (111), the connecting pipe (50) is installed on the second interface (112), and the nut joint (40) is sleeved on the outer periphery of the second pipe head (13) and threadedly connected with the second pipe head (13).

8. The manufacturing method according to claim 7, characterized in that: Cutting the first tube head (12) includes machining the outer surface shape of the first tube head (12) and the first channel in the first tube head (12); Cutting the second tube head (13) includes machining the outer surface shape of the second tube head (13) and the second channel in the second tube head (13); The first interface (111) and the second interface (112) are formed by cutting inwards from two opposite side surfaces of the valve body (11), or by cutting inwards from one side of the valve body (11) to form the first interface (111) and the second interface (112) that are interconnected; Wherein, the first channel in the first tube head (12), the second channel in the second tube head (13) and the valve port (113) are coaxially processed.

9. The manufacturing method according to claim 7, characterized in that: Installing the valve assembly (30) on the first interface (111) comprises: inserting the valve nozzle (31) of the valve assembly (30) into the first interface (111), and then welding the valve nozzle (31) and the valve body (11); Installing the pipe (50) on the second interface (112) comprises: extending one end of the pipe (50) into the second interface (112), and then welding the pipe (50) and the valve body (11); Installing the valve core (20) on the first pipe head (12) includes: putting a sealing ring on the outer wall of the valve core (20), then inserting the valve core (20) into the first pipe head (12), and matching the external thread of the valve core (20) with the internal thread in the first pipe head (12).

10. The manufacturing method according to claim 7, characterized in that: The profile rod is in a rectangular shape, and the manufacturing method further comprises: processing a plurality of connection holes (114) on the side of the valve body (11), wherein the connection holes (114) are used to connect with fasteners to fix the valve body (11).

11. The manufacturing method according to claim 7, characterized in that: The profile rod comprises a rectangular main body and a convex plate connected to the side of the main body, wherein the main body is used as a raw material for processing the first pipe head (12), the second pipe head (13) and the valve body (11). The manufacturing method also includes: cutting the convex plate into a flange (14), and through-processing a matching hole (141) on the flange (14), and the flange (14) is used to connect with a fastener to fix the valve body (11).

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