Stop valve

Abstract

Disclosed is a stop valve (100) including a stainless steel valve seat (10) having at least a first opening (11) and a second opening (12) formed therein, and at least a portion of a valve core (20) disposed inside the valve seat (10) and movable along the axial direction of the valve seat (10) to connect or disconnect the first opening (11) and the second opening (12), the valve seat (10) including a base (15) and a socket (14), at least a portion of the valve core (20) positioned within the socket (14) and extending into the base (15), the base (15) and the socket (14) being provided separately and fixedly connected.

Description

Technical Field

[0001] Related Application This application claims the priority of Chinese patent applications filed on December 18, 2021 with application number 202123214781.9 and the invention title being "Stop Valve", filed on December 18, 2021 with application number 202123218667.3 and the invention title being "Stop Valve", and filed on December 18, 2021 with application number 202123220452.5 and the invention title being "Stop Valve", the entire contents of which are incorporated into this application by reference.

[0002] The present application relates to the technical field of cooling, and in particular, to a stop valve.

Background Art

[0003] In a cooling system, a stop valve plays an important role in cutting off and throttling the medium in the pipeline where it is located. The opening and closing member of the stop valve is a valve core, and the valve core is mainly applied to blocking media in low-temperature environments.

[0004] In the stop valve in the related art, the valve seat includes a base and a socket, the valve seat is integrally cast from brass, there is a problem of stress concentration at the transition part between the socket and the base, which is prone to cracking.

Summary of Invention

[0005] According to various embodiments of the present application, a stop valve is provided, and the technical solution is as follows. The present application provides a stop valve including a valve seat and a valve core made of stainless steel. At least a first opening and a second opening are opened through the valve seat, at least a part of the valve core is arranged inside the valve seat, and can move along the axial direction of the valve seat to communicate or block the first opening and the second opening, the valve seat includes a base and a socket, at least a part of the valve core is located in the socket and extends into the base, and the base and the socket are separately arranged and fixedly connected.

[0006] Details of one or more embodiments of this application are presented in the following drawings and description. Other features, purposes and advantages of this application will become apparent in the specification, drawings and claims. [Brief explanation of the drawing]

[0007] One or more drawings may be referenced to better describe and illustrate the embodiments and / or examples of these inventions disclosed herein. Any additional details or examples used to illustrate the drawings should not be considered to limit the scope of any of the disclosed inventions, the embodiments and / or examples described herein, or the best forms of these inventions as understood herein.

[0008] [Figure 1] This is a perspective view of a stop valve according to one or more embodiments. [Figure 2] This is a perspective view of a cross-sectional view of a stop valve according to one or more embodiments. [Figure 3] This is a front view of a cross-sectional view of a stop valve according to one or more embodiments. [Figure 4] This is an exploded view of a stop valve according to one or more embodiments. [Figure 5] This is an exploded cross-sectional view of a stop valve according to one or more embodiments. [Figure 6] This is a cross-sectional view of a stop valve in one or more embodiments when it is open. [Figure 7] This is a magnified view of part A in Figure 6. [Figure 8] This is a cross-sectional view of a stop valve in one or more embodiments when it is closed. [Figure 9] This is a perspective view of a stop valve according to one or more embodiments. [Figure 10] This is an exploded cross-sectional view of a stop valve according to one or more embodiments. [Figure 11] This is an exploded view of a stop valve according to one or more embodiments. [Figure 12] This is an exploded cross-sectional view of a stop valve according to one or more embodiments. [Figure 13] This is an exploded view of a stop valve according to one or more embodiments. [Figure 14] This is a perspective view of a cross-sectional view of a stop valve according to one or more embodiments. [Figure 15] This is a front view of a cross-sectional view of a stop valve according to one or more embodiments. [Figure 16] This is a perspective view of a stop valve according to one or more embodiments. [Figure 17] This is a schematic diagram of the valve core face-up mounting process according to one or more embodiments. [Figure 18] This is a schematic diagram of the face-down mounting process of valve cores according to one or more embodiments.

[0009] In the drawings, the meaning of each symbol is as follows: 100 Stop valve, 10 Valve seat, 11 First opening, 111 First connecting pipe, 112 First connecting pipe, 12 Second opening, 121 Second connecting pipe, 122 Second connecting pipe, 13 Collar, 131 Valve port, 132 Second limiting section, 133 Second projection, 14 Socket, 15 Base, 151 First segment, 1511 First mounting port, 1512 First limiting section, 152 Main segment, 153 Second segment, 1531 Second positioning section, 154 Second mounting port, 16 Connecting ring, 17 Step, 20 Valve core, 21 Operating segment, 211 Groove, 22 Connecting segment, 221 First sealing member, 222 First projection, 223 First sealing groove, 224 Third sealing member, 23 Contact segment, 231 Second sealing member, 232 Second sealing groove, 30 31 mounting base, 40 first positioning part, 40 end cover, 401 third projection, 50 protective sleeve, 60 valve assembly, 61 connector, 62 valve core, 63 housing, 64 fourth sealing member, 65 elastic member, 70 valve body. [Modes for carrying out the invention]

[0010] Hereinafter, the technical solutions in the examples of the present application will be clearly and completely described with reference to the drawings in the examples of the present application. It is obvious that the described examples are only some examples of the present application, not all examples. All other embodiments obtained by a person skilled in the art based on the embodiments in the present application without creative effort shall fall within the protection scope of the present application.

[0011] It should be noted that when an assembly is referred to as being "mounted on" another assembly, it may be directly mounted on the other assembly, or there may be an intervening assembly. When an assembly is considered to be "disposed on" another assembly, it may be directly disposed on the other assembly, or an intervening assembly may also exist at the same time. When an assembly is considered to be "fixed to" another assembly, it may be directly fixed to the other assembly, or an intervening assembly may also exist at the same time.

[0012] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as commonly understood by those skilled in the art to which the present application pertains. The terms used in the specification of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the present application, the term "or / and" includes any and all combinations of one or more of the associated listed items.

[0013] Referring to FIGS. 1 to 18, the stop valve 100 provided in the present application is installed in a cooling system and used for realizing communication and blocking of a pipeline.

[0014] Referring to FIGS. 12 and 13, the stop valve 100 includes a valve body 70 and a valve core 20, at least a part of the valve core 20 is disposed in the valve body 70 and can move within the valve body 70. The valve body 70 includes a valve seat 10. Both the valve body 70 and the valve core 20 are made of stainless steel, which can reduce the cost.

[0015] Specifically, referring to FIG. 2, FIG. 3, FIG. 6, FIG. 9 and FIG. 12, the valve body 70 comprises a valve seat 10, the interior of the valve seat 10 is hollow and is used for accommodating components such as the valve core 20. At least a part of the valve core 20 is arranged inside the valve seat 10 and can move along the axial direction of the valve seat 10. In this embodiment, the valve core 20 may be made of stainless steel, and in other embodiments, the valve core 20 may be made of materials such as brass.

[0016] A first opening 11 and a second opening 12 are provided through the valve seat 10, a first communication pipe 111 is connected into the first opening 11, and a second communication pipe 121 is connected into the second opening 12. The first communication pipe 111 and the second communication pipe 121 serve as an inlet or an outlet for a medium respectively. When the first communication pipe 111 is used as the medium inlet, the medium enters the stop valve 100 through the first communication pipe 111, passes through the first opening 11 and enters the interior of the valve seat 10. When the stop valve 100 is in an open state, the medium passes through the second opening 12 and flows out of the stop valve 100 through the second communication pipe 121. Conversely, the medium may also enter the valve seat 10 from the second communication pipe 121 through the second opening 12, and then flow out of the stop valve 100 through the first opening 11 and the first communication pipe 111.

[0017] A first connecting pipe 112 is provided at one end of the first communication pipe 111 away from the valve body 70, the first communication pipe 111 and the first connecting pipe 112 are provided as separate components and are fixedly connected, and the first connecting pipe 112 is used for connecting to an external pipeline. By providing the first communication pipe 111 and the first connecting pipe 112 as separate components, both the first communication pipe 111 and the first connecting pipe 112 can be formed by molding standard joints respectively, so materials can be saved.

[0018] The first connecting pipe 112 is a copper pipe, and the first communication pipe 111 is a stainless steel pipe; the first connecting pipe 112 and the first communication pipe 111 are fixed by welding. Since an air conditioning pipeline is a copper pipe, it is easy to weld and connect the copper first connecting pipe 112 to the air conditioning pipeline.

[0019] The first connecting pipe 112 is fitted into the outer wall of one end of the first connecting pipe 111, and the inner diameter of the first connecting pipe 112 is larger than the inner diameter of the first connecting pipe 111. This design increases the contact area between the first connecting pipe 112 and the first connecting pipe 111, thereby strengthening the welding strength, and also allows one end of the external piping to fit into the first connecting pipe 112 when connected to the external piping, so that the inner diameter of the first connecting pipe 111 matches that of the external piping.

[0020] A second connecting pipe 122 is provided at one end of the second connecting pipe 121 away from the valve body 70. The second connecting pipe 121 and the second connecting pipe 122 are provided separately and fixedly connected, and the second connecting pipe 122 is used to connect to external piping. By providing the second connecting pipe 121 and the second connecting pipe 122 separately, the second connecting pipe 121 and the second connecting pipe 122 can be formed by molding standard fittings, thereby saving material and reducing costs.

[0021] The second connecting pipe 122 is a copper pipe, and the second connecting pipe 121 is a stainless steel pipe. The second connecting pipe 122 and the second connecting pipe 121 are welded together, and because the air conditioning piping is made of copper, it is easy to weld the copper second connecting pipe 122 to the air conditioning piping.

[0022] The second connecting pipe 122 is fitted into the outer wall of one end of the second connecting pipe 121, and the inner diameter of the second connecting pipe 122 is larger than the inner diameter of the second connecting pipe 121. This design increases the contact area between the second connecting pipe 122 and the second connecting pipe 121, thereby strengthening the welding strength, and also allows one end of the external piping to fit into the second connecting pipe 122 when connected to the external piping, so that the inner diameter of the second connecting pipe 121 matches that of the external piping.

[0023] With this design, the first connecting pipe 111 and the first connecting pipe 112 are provided as separate components, and the first connecting pipe 111 and the first connecting pipe 112 can be formed by molding standard fittings, thus saving material, and / or the second connecting pipe 121 and the second connecting pipe 122 can be formed by molding standard fittings, thus saving material and reducing costs.

[0024] In this embodiment, a step 17 is provided on the inner wall of the valve seat 10, and a valve opening 131 is provided on the step 17. The valve opening 131 communicates with and is coaxial with the first opening 11. When the valve core 20 is inserted into the valve opening 131, the first opening 11 and the second opening 12 can be blocked. In this embodiment, the valve opening 131 is provided on the valve seat 10, reducing the welding process. In other embodiments, a separate collar 13 may be provided inside the valve seat 10, and the valve opening 131 is formed on the end face of the collar 13 facing the valve core 20.

[0025] The valve seat 10 is made of stainless steel and includes a base 15 and a socket 14, with at least a portion of the valve core 20 located within the socket 14 and extending into the base 15. The base 15 and socket 14 are provided separately and fixedly connected. Selectively, the first connecting pipe 111 and the second connecting pipe 121 are fixed to the base 15 by welding. This design allows the inner diameter of the base 15 to be adjusted according to the actual situation, thereby realizing the function of large-diameter flow. Furthermore, since stainless steel is relatively inexpensive, the valve seat 10 made of stainless steel can reduce costs. Also, because stainless steel is relatively hard, segmenting the valve seat 10 makes processing easier. The base 15 and socket 14 can be applied to stop valves 100 with different structures, offering good versatility and flexibility. Moreover, it avoids the problem of stress concentration and cracking at the transition between the base 15 and socket 14 that can occur when brass is used and cast as a single unit.

[0026] Referring to Figure 12, a collar 13 is provided within the valve seat 10, and a valve opening 131 is drilled in the collar 13, which communicates with the first opening 11. In some embodiments, the valve opening 131 communicates with the first opening 11 and is provided coaxially. When the valve core 20 comes into contact with the collar 13, the first opening 11 and the second opening 12 can be blocked.

[0027] Since the diameter of the opening of the valve seat 10 toward the collar 13 is larger than the outer diameter of the valve core 20, it becomes easier to install the valve core 20 through this opening.

[0028] Referring to Figures 10 and 11, in this embodiment, the collar 13 is made of stainless steel, and the collar 13 and the valve seat 10 are provided separately and fixedly connected. Since stainless steel is relatively hard, providing them separately makes processing easier and reduces costs. In addition, the valve seat 10 and the collar 13 can be applied to stop valves 100 with different structures, enhancing versatility and flexibility. Furthermore, since the collar 13 and the base 15 can be formed by processing joints, the generation of waste material is reduced.

[0029] A second limiting portion 132 is provided on the inner wall of one end of the collar 13 adjacent to the first connecting pipe 111, and the first connecting pipe 111 abuts against the second limiting portion 132, limiting the depth to which the first connecting pipe 111 can be inserted into the collar 13.

[0030] In this embodiment, the second limiting portion 132 is a stepped surface, while in other embodiments, the second limiting portion 132 may have a structure such as a protrusion.

[0031] The collar 13 and valve seat 10 can be selectively fixed by welding to enhance their robustness.

[0032] Since the inner diameter of the base 15 is larger than the inner diameter of the socket 14, material for the socket 14 is saved.

[0033] The base 15 and socket 14 can be selectively fixed by welding to enhance their robustness.

[0034] The base 15 is formed by cold forging, and the socket 14 is formed by processing a stainless steel pipe. Since the stainless steel pipe is a ready-made product, it is easy to process. Because the socket 14 uses a steel pipe directly, the cold-forged components are shortened accordingly, reducing the difficulty of cold forging, minimizing deformation of the valve seat 10, and mitigating the problem of stress concentration, making it less prone to cracking. This design reduces the generation of waste materials.

[0035] Referring to Figures 1, 4, and 5, the base 15 includes a main segment 152 and a first segment 151, the main segment 152 and the first segment 151 are connected and integrally molded, the first segment 151 is provided on the end face of one end of the main segment 152 adjacent to the socket 14, the first segment 151 is provided projecting from the end face of the main segment 152, the first segment 151 is used for connection to the socket 14, and since the diameter of the circumscribed circle of the first segment 151 is smaller than that of the main segment 152, material is saved.

[0036] The first segment 151 is annular in shape and has a first mounting opening 1511 drilled in it, the main body segment 152 is hollow and the first mounting opening 1511 communicates with the inside of the main body segment 152, and the socket 14 fits into the first mounting opening 1511.

[0037] The base 15 further includes a second segment 153, the main segment 152 and the second segment 153 being connected and integrally molded, the second segment 153 being provided on the end face of the main segment 152 away from the first segment 151, and the second segment 153 projecting from the end face of the main segment 152. The diameter of the circumscribed circle of the second segment 153 is smaller than the diameter of the circumscribed circle of the main segment 152, and the second segment 153 is used to engage with other parts to secure the base 15.

[0038] In this embodiment, the main body segment 152 is rectangular, the first segment 151 is annular, and the second segment 153 is cylindrical. In other embodiments, the main body segment 152 may be circular, the first segment 151 may be rectangular annular, and the second segment 153 may be prismatic.

[0039] The valve seat 10 further includes a connecting ring 16, which is fitted to the outer wall of one end of the socket 14 and is provided within a first mounting opening 1511 and fixedly connected to the inner wall of the first mounting opening 1511. The connecting ring 16 is provided between the base 15 and the socket 14, and the side of the connecting ring 16 closer to the socket 14 is fixedly connected to the socket 14, while the side of the connecting ring 16 further away from the socket 14 is fixedly connected to the base 15, and the outer diameter of the socket 14 is smaller than the outer diameter of the base 15. Furthermore, by providing it in a segmented manner, the design of the connecting ring 16 can reduce the width of the socket 14 and the width of the valve core 20, saving material. In addition, by saving material for the sealing member inside the socket 14, material savings are made, the difficulty of processing is reduced, the socket 14 only needs to act as a guide for the valve core 20, the base 15 is relatively large, and the flow rate of the medium can be increased.

[0040] In other embodiments, the connecting ring 16 may be fitted into the outer wall of the first mounting opening 1511 and fixedly connected to the outer wall of the first mounting opening 1511.

[0041] The connecting ring 16 is provided separately from the base 15 and the socket 14. Both the connecting ring 16 and the base 15 are made of stainless steel, and since stainless steel is relatively hard, providing them separately makes processing easier. Because the dimensions of the connecting ring 16, the socket 14, and the base 15 are different, providing them separately allows for individual processing. Since the connecting ring 16, the socket 14, and the base 15 can all be processed using stainless steel fittings, waste generation is further reduced, costs are saved, and the number of processes is reduced. Furthermore, when brass is used and cast as a single unit, the problem of stress concentration at the transition between the base 15 and the socket 14, which makes it prone to cracking, is avoided. Similarly, the connecting ring 16, the socket 14, and the base 15 can be applied to different stop valves 100, enhancing flexibility of use.

[0042] The base 15 is formed by flanges on both sides after the steel pipe is installed, and the socket 14 is formed from a standard steel pipe, so no processing is required.

[0043] The connecting ring 16 is fixed to the base 15 and the socket 14 by welding, respectively, to enhance the robustness of the connection.

[0044] The robustness of the connection is enhanced by selectively welding the connecting ring 16 to the inner wall of the first mounting opening 1511. The protruding first segment 151 can increase the contact area between the connecting ring 16 and the base 15, which is advantageous for the flow of welding material and enhances the robustness of the weld.

[0045] A first limiting portion 1512 is provided on the inner wall of the first mounting opening 1511, and the connecting ring 16 abuts against the first limiting portion 1512 to position the connecting ring 16.

[0046] In this embodiment, the first limiting portion 1512 is an annular stepped surface, while in other embodiments, the first limiting portion 1512 may be a projection.

[0047] By ensuring that the end face of the connecting ring 16 facing inward towards the main body segment 152 and the end face of the socket 14 facing inward towards the main body segment 152 are flush with each other, the depth to which the socket 14 enters the first mounting opening 1511 becomes appropriate, preventing the socket 14 from entering too far and interfering with the valve core 20.

[0048] Furthermore, the end face of the connecting ring 16 away from the main body segment 152 is provided to protrude relative to the end face of the first segment 151 away from the main body segment 152, or the end face of the connecting ring 16 away from the main body segment 152 and the end face of the first segment 151 away from the main body segment 152 are provided flush with each other, thereby increasing the contact area between the connecting ring 16 and the base 15, strengthening the sealing performance and the welding strength.

[0049] The stop valve 100 further includes a frame 30, which is annular in shape and fitted to the outside of the base 15, thereby being fixedly connected to the base 15. The frame 30 and the base 15 are provided separately. The frame 30 can be applied to stop valves 100 with different structures, enhancing flexibility of use.

[0050] The frame 30 and the base 15 are fixedly connected by welding, making processing easier. The frame 30 is made of stainless steel, and because stainless steel is relatively hard, providing the frame 30 and the base 15 as separate parts makes processing easier and reduces costs.

[0051] Selectively, the support frame 30 is fitted to the outside of the second segment 153 and abuts against the main body segment 152. The support frame 30 not only provides support to the main body segment 152, but can also be used to attach and fix the base 15.

[0052] Referring to Figures 3 and 4, a first positioning section 31 is provided on the inner wall of the frame 30, and a second positioning section 1531 is provided on the outer wall of the second segment 153. The frame 30 and the second segment 153 are positioned and attached using the first positioning section 31 and the second positioning section 1531. When welding the frame 30 and the second segment 153, the engagement of the first positioning section 31 and the second positioning section 1531 acts as a limiting force, preventing rotation of the frame 30 and eliminating the need for external clamping tools.

[0053] In this embodiment, both the first positioning portion 31 and the second positioning portion 1531 are flat, and the flat surface of the frame 30 is in close contact with the flat surface of the second segment 153. In other embodiments, the first positioning portion 31 and the second positioning portion 1531 may be protrusions or other structures.

[0054] In some embodiments, the valve body 70 further includes an end cover 40, which is provided at one end of the valve seat 10.

[0055] Specifically, the socket 14 has openings at both ends, an end cover 40 is provided at the opening at one end away from the base 15 of the socket 14, and a female thread is provided inside the end cover 40, and a male thread is provided at one end of the valve core 20, and the axial movement of the valve core 20 is achieved by screwing the female thread of the end cover 40 and the male thread of the valve core 20 together.

[0056] One end of the end cover 40 is inserted into the valve seat 10 and is provided separately from the valve seat 10, and the end cover 40 is fixedly connected to the valve seat 10. By providing the valve seat 10 and the end cover 40 as separate parts, the valve seat 10 and the end cover 40 can be formed by machining joints on each part during manufacturing, and the design of the multi-stage valve body 70 reduces the generation of waste material, saves costs, and reduces the number of processes. In addition, both the end cover 40 and the valve seat 10 are made of stainless steel, and since stainless steel is relatively hard, providing them as separate parts makes manufacturing easier, and the end cover 40 and the valve seat 10 can be applied to different stop valves 100, enhancing flexibility and versatility.

[0057] The valve core 20 includes a connecting segment 22 and an operating segment 21 that are connected to each other, the operating segment 21 being inserted into the end cover 40, a male thread provided on the operating segment 21, and a groove 211 provided on the end face of one end of the operating segment 21 away from the base 15, the groove 211 having at least two parallel planes for operating and rotating the valve core 20 with an external tool. In some embodiments, at least a portion of the connecting segment 22 is provided in the socket 14.

[0058] The groove 211 is provided with six interconnected planes for operation with a hex wrench.

[0059] A first sealing member 221 is provided on the outer wall of the connecting segment 22, and the first sealing member 221 abuts against the inner wall of the socket 14. Similarly, the arrangement of the connecting ring 16 can also save material for the first sealing member 221.

[0060] First projections 222 are provided on both sides of the first sealing member 221, and the first projections 222 on both sides form a first sealing groove 223. A third sealing member 224 is provided on the first projection 222 that is close to the end cover 40, and the third sealing member 224 can come into contact with the end cover 40. When the stop valve 100 is fully open, the third sealing member 224 comes into contact with the end cover 40 and serves as a buffer and limiter.

[0061] Referring to Figure 12, in some embodiments, a third sealing member 224 is provided on the outer wall of the connecting segment 22, a first projection 222 is provided on the outer wall of the operating segment 21, the third sealing member 224 is provided on the first projection 222, and a third projection 401 is provided on one end of the end cover 40, the third projection 401 is capable of contacting the third sealing member 224 and serves as a buffer and limiter.

[0062] Selectively, the side surface of the third projection 401 facing the third sealing member 224 is an arcuate surface, which enhances the tight contact between the third projection 401 and the third sealing member 224.

[0063] A first sealing groove 223 is formed between the first projection 222 and the connecting segment 22, and the first sealing member 221 is provided within the first sealing groove 223.

[0064] The valve core 20 further includes a contact segment 23, the outer diameter of which is greater than that of the connecting segment 22, so that when the stop valve 100 is closed, the contact segment 23 contacts the step 17 and can seal the valve opening 131. The outer diameter of the connecting segment 22 is relatively small, which can save material. In some embodiments, the contact segment 23 is provided on the base 15 and connected to the connecting segment 22, so that when the stop valve 100 is closed, the contact segment 23 contacts the collar 13 and can seal the valve opening 131.

[0065] Referring to Figures 7 and 8 together, a second sealing member 231 is provided on the side of the contact segment 23 facing the valve opening 131. The second sealing member 231 can come into contact with the step 17, thereby enhancing the sealing performance with respect to the valve opening 131.

[0066] A second projection 133 is provided on the end face of the collar 13 facing the valve core 20, and the second sealing member 231 can come into contact with the second projection 133, thereby enhancing the sealing performance with respect to the valve opening 131.

[0067] The second sealing member 231 is a pure copper packing or gasket, and since both pure copper packings and gaskets are relatively soft, they can enhance the sealing performance.

[0068] A second sealing groove 232 is drilled on the side of the contact segment 23 adjacent to the valve opening 131, and the second sealing member 231 is provided within the second sealing groove 232. The second sealing groove 232 is annular in shape, and the opening of the second sealing groove 232 is provided with a reduced diameter, that is, the ring width at the opening of the second sealing groove 232 is smaller than the ring width inside the second sealing groove 232, so that the second sealing member 231 is tightly locked inside the second sealing groove 232 and is difficult to dislodge.

[0069] Selectively, the cross-section of the second sealing groove 232 is trapezoidal, making it easier to machine.

[0070] Furthermore, the second projection 133 is annular in shape and is provided in the circumferential direction surrounding the valve opening 131, or there are multiple second projections 133, and the multiple second projections 133 are uniformly distributed in the circumferential direction surrounding the valve opening 131.

[0071] As the thickness of the second projection 133 gradually decreases along the direction approaching the valve core 20, the end of the second projection 133 closest to the valve core 20 becomes sharper, allowing it to be fitted into the second sealing member 231. This design enhances the sealing performance.

[0072] In this embodiment, the side of the second projection 133 away from the valve opening 131 is inclined with respect to the axis of the valve opening 131, and along the direction approaching the valve core 20, the distance from the side of the second projection 133 away from the valve opening 131 to the central axis of the valve opening 131 gradually decreases, and the inner side of the second projection 133 close to the valve opening 131 becomes flush with the wall surface of the valve opening 131. In other embodiments, both the side of the second projection 133 close to the valve opening 131 and the side away from the valve opening 131 are inclined with respect to the axis of the valve opening 131, or the side of the second projection 133 close to the valve opening 131 is inclined with respect to the axis of the valve opening 131, but the side of the second projection 133 away from the valve opening 131 is parallel to the axis of the valve opening 131.

[0073] The height h of the second projection 133 is 0.5 mm to 5 mm, and the height h of the second projection 133 is an appropriate value. If the second projection 133 is too high, material will be wasted, and if it is too low, the sealing performance will be affected. The height of the second projection 133 may be 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, or 5 mm.

[0074] The stop valve 100 further includes a protective sleeve 50, which is fitted to the outside of the socket 14 and serves to protect the valve core 20, preventing dust from accumulating on the male threads of the operating segment 21 and being brought into the socket 14, as well as preventing dust from accumulating in the groove 211.

[0075] Furthermore, the stop valve 100 further includes a valve assembly 60, the base 15 having a second mounting opening 154 drilled in its side surface, and one end of the valve assembly 60 fits into the second mounting opening 154 and is fixedly connected to the inner wall of the second mounting opening 154.

[0076] In this embodiment, the valve assembly 60 is connected to the main body segment 152. The valve assembly 60 is positioned opposite the second opening 12 and is used as an air inlet or outlet to replenish or discharge the medium throughout the cooling system. In other embodiments, the axis of the valve assembly 60 may be perpendicular to the axis of the second opening 12, and the valve assembly 60 may be positioned at other locations on the base 15.

[0077] In other embodiments, the valve assembly 60 may not be provided.

[0078] The valve assembly 60 includes a connector 61, which is connected to the valve seat 10, the connector 61 is connected to the second mounting port 154, and the connector 61 is a passage through which the medium enters the valve seat 10.

[0079] The connector 61 is made of stainless steel and is provided separately from the base 15, making it easier to manufacture. The valve assembly 60 can be applied to stop valves 100 with different structures, enhancing flexibility of use.

[0080] The valve assembly 60 further includes a valve core 62, a housing 63, and a fourth sealing member 64. The valve core 62 is provided within the connector 61 and can communicate or block the interior of the main body segment 152 from the interior of the connector 61. The housing 63 is fitted to the outer circumference of the connector 61 to protect the valve core 62 and prevent the ingress of external impurities. The fourth sealing member 64 is located between the housing 63 and the connector 61 and engages with the housing 63 to seal the connector 61.

[0081] Specifically, an elastic member 65 is provided at one end of the valve core 62. When the valve core 62 is not subjected to external pressure, it remains closed, and in this case, the connector 61 maintains a seal, separating the inside and outside of the valve seat 10. When the valve core 62 is subjected to pressure, it presses against the elastic member 65 and moves toward the base 15, thereby releasing the seal. This allows the inside of the base 15 and the inside of the connector 61 to communicate, enabling the medium to enter the inside of the valve seat 10 or flow out of the inside of the valve seat 10. The elastic member 65 is used to return the valve core 62 to its original position.

[0082] In some embodiments, during the manufacturing process, the socket 14 is first processed using a formed stainless steel tube, and the base 15 is processed by cold forging a stainless steel tube or stainless steel rod. Then, the connecting ring 16 is fitted to the outside of the socket 14, the connecting ring 16 is brought into contact with the first limiting portion 1512, the connecting ring 16 is welded to the base 15, and the connecting ring 16 is welded to the socket 14. During this process, the valve core 20 is installed into the base 15 through the first mounting opening 1511.

[0083] Simultaneously, the separate mounting frame 30 and valve assembly 60 are welded to the base 15. By providing each component separately and fixing them by welding, processing becomes easier, the problem of stress concentration and cracking is solved, and each component provided separately can be applied to other stop valves 100 with different structures, resulting in high versatility and flexibility.

[0084] In some embodiments, during the manufacturing process, the socket 14 is first machined using a formed stainless steel tube, the base 15 is machined by cold forging, and then the collar 13 formed by machining is placed inside the base 15, and the collar 13, base 15 and socket 14 are welded and fixed to the base 15. At the same time, a second projection 133 is provided on the collar 13 and a second sealing member 231 is provided on the valve core 20, so that when the stop valve 100 is closed, the second sealing member 231 comes into contact with the second projection 133, thereby enhancing the sealing performance and preventing internal leakage from the stop valve 100.

[0085] In some embodiments, the base 15, socket 14, and connecting ring 16 are formed by machining fittings during the manufacturing process and then welded together, thus reducing waste material. Furthermore, the first connecting pipe 112 and the second connecting pipe 121 are formed by molding standard fittings and then welded together, and the second connecting pipe 122 and the second connecting pipe 121 are formed by molding standard fittings, thus reducing the generation of waste material.

[0086] Referring to Figure 17, in the installation process, in some embodiments, the connector 61, first connecting pipe 111, second connecting pipe 121, collar 13, and frame 30 are first fixed to the base 15, that is, the lower half of the stop valve 100 is installed first, then the valve core 20 is mounted inside the base 15, and the connecting ring and socket 14 are welded to the base 15 to achieve face-up mounting of the valve core 20. In some other embodiments, referring to Figure 18, the first connecting pipe 111, socket 14, end cover 40, and connector 61 are first connected to the base 15, then the valve core 20 is installed from the first opening 11, and then the collar 13 and second connecting pipe 121 are installed to achieve face-down mounting of the valve core 20. The multi-stage valve body 70 allows for flexibility and diversification of the valve core 20 installation process.

[0087] The technical features of the embodiments described above can be combined in any way, and for the sake of brevity, not all possible combinations of the technical features in the embodiments described above have been explained. However, as long as these combinations of technical features are inconsistent, they should all be considered to fall within the scope described herein.

[0088] The embodiments described above are merely examples of some embodiments of this application, and although the descriptions are relatively specific and detailed, they should not be understood as limiting the scope of the claims of the utility model. Those skilled in the art may make several modifications and improvements, provided they do not depart from the spirit of this application, and it should be noted that all of these fall within the scope of protection of this application. Therefore, the scope of protection of the patent in this application shall be in accordance with the attached claims.

Claims

1. A valve seat made of stainless steel, having at least a first opening and a second opening drilled in the valve seat, A valve core is provided inside the valve seat, and is capable of moving along the axial direction of the valve seat so as to connect or block the first opening and the second opening, The valve seat includes a base and a socket, with at least a portion of the valve core located within the socket and extending into the base, and the base and the socket are provided separately and fixedly connected. A step is provided in the inner wall of the valve seat, a valve opening is provided in the step, and the valve opening is in communication with and coaxial with the first opening. The valve seat further includes a connecting ring, the connecting ring is provided between the base and the socket, and the side of the connecting ring closer to the socket is fixedly connected to the socket, and the side of the connecting ring further away from the socket is fixedly connected to the base, and the outer diameter of the socket is smaller than the outer diameter of the base, in a stop valve, The stop valve further includes an end cover, the end cover is provided at one end of the valve seat, the valve core is inserted into the end cover and screwed into the end cover, and the end cover and the valve seat are provided separately and fixedly connected.

2. The stop valve according to claim 1, wherein the connecting ring is provided separately from the base and the socket, the connecting ring is fitted to the outer wall of one end of the socket and fixedly connected to the socket, and a first mounting opening is drilled at one end of the base adjacent to the socket, and the connecting ring enters into the first mounting opening and is fixedly connected to the inner wall of the first mounting opening.

3. The inner diameter of the base is larger than the inner diameter of the socket, the connecting ring is fitted to the outer wall of one end of the socket and fixedly connected to the socket, a first mounting opening is drilled at one end of the base adjacent to the socket, the connecting ring enters into the first mounting opening and is fixedly connected to the inner wall of the first mounting opening, and / or, The stop valve according to claim 1, wherein the connecting ring is provided separately from the base and the socket, a first limiting portion is provided on the inner wall of the first mounting opening, and the connecting ring abuts against the first limiting portion.

4. The stop valve according to claim 3, wherein the base includes a main segment and a first segment, the first segment is provided on the main segment, a first mounting opening is drilled in the first segment, and the end face of the connecting ring away from the main segment is provided so as to protrude from the end face of the first segment away from the main segment, or the end face of the connecting ring away from the main segment and the end face of the first segment away from the main segment are provided flush with each other.

5. The stop valve further includes a frame, the frame being fitted to the outside of the base and fixedly connected to the base, and the frame and the base are provided separately. The base includes a main segment and a second segment, the second segment being provided at one end of the main segment, the diameter of the circumscribed circle of the second segment being smaller than the diameter of the circumscribed circle of the main segment, and the frame being fitted to the outside of the second segment. The stop valve according to claim 1, wherein a first positioning portion is provided on the inner wall of the frame, a second positioning portion is provided on the outer wall of the second segment, and the first positioning portion and the second positioning portion engage to position the frame and the second segment.

6. The stop valve according to claim 1, wherein a third projection is provided at one end of the end cover, a first projection is provided on the outer wall of the valve core, a third sealing member is provided on the first projection, and the third sealing member is capable of contacting the third projection.

7. A first connecting pipe is provided in the first opening, a first connecting pipe is provided at one end of the first connecting pipe, the first connecting pipe is used to connect to external piping, the first connecting pipe and the first connecting pipe are provided separately, and / or The stop valve according to claim 1, wherein a second connecting pipe is provided in the second opening, a second connecting pipe is provided at one end of the second connecting pipe, the second connecting pipe is used for connection to external piping, and the second connecting pipe and the second connecting pipe are provided separately.

8. The base is formed by cold forging, and the socket is formed by processing a stainless steel tube, and / or The base is formed by a joint and / or The stop valve according to claim 1, wherein the socket is formed by a fitting.

9. The stop valve according to claim 1, further comprising a valve assembly made of stainless steel, wherein a second mounting port is provided on the side surface of the base, one end of the valve assembly is inserted into the second mounting port and fixedly connected to the inner wall of the second mounting port, and the valve assembly and the base are provided separately and fixedly connected.

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