Stop valve
The integrated valve body structure and threaded fit design simplify the assembly process of the gate valve, solve the problem of aligning the valve pipe with the valve body, reduce assembly difficulty and leakage risk, and improve connection reliability and structural strength.
Patent Information
- Application Number
- CN202520701389.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-14
AI Technical Summary
The assembly of existing gate valves is complex, especially the alignment requirements between the valve pipe and the valve body are high, which increases the assembly difficulty and cost, and poses a risk of welding leakage.
It adopts an integrated valve body structure, integrating the functions of valve pipe and valve body. The movement control of valve core is realized through threaded connection, which simplifies the assembly process, reduces parts and welding steps, and enhances structural strength.
It reduces assembly difficulty and cost, decreases leakage risk, improves connection reliability and valve body structural strength, and simplifies processing technology.
Smart Images
Figure CN223953276U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of valves, in particular to a stop valve. BACKGROUND
[0002] The stop valve is widely used in the pipeline of refrigeration system, which usually includes a valve body, a valve core installed in the valve body, and a valve pipe sleeved on the outer periphery of the valve body. The valve pipe is used for connecting with a connecting pipe or the like. An inner thread is arranged on the inner wall of the valve body, and an outer thread is arranged on the outer wall of the valve core. The movement of the valve core in the valve body is realized through the thread cooperation between the outer thread and the inner thread, so as to ensure the on-off function of the medium in the pipeline.
[0003] In the related art, the valve pipe needs to be aligned with the interface when assembled with the valve body, so as to ensure the accuracy of the position when the connecting pipe or the air valve is installed, thereby improving the complexity of the overall assembly of the stop valve. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a stop valve to simplify the assembly of the stop valve.
[0005] The present application provides a stop valve, which includes a valve body, a valve core, a first connecting pipe and a second connecting pipe. A valve cavity is formed in the valve body. The valve cavity includes a threaded cavity, a valve port and an opening which are sequentially arranged along the axial direction of the valve cavity. The opening is arranged at one end of the valve cavity along the axial direction. A first connecting hole is formed on the outer side wall of the valve body. The first connecting pipe is connected with the first connecting hole, and the first connecting pipe is in communication with the threaded cavity. The second connecting pipe is inserted into and connected with the opening. The valve core is movably installed in the valve cavity. A threaded segment is arranged on the valve core. The outer wall of the threaded segment is threadedly connected with the inner wall of the threaded cavity. The valve core can move along the axial direction of the valve cavity towards the valve port or away from the valve port, so as to control the on-off of the first connecting pipe and the second connecting pipe through the valve port. The valve body is an integral structure.
[0006] In one embodiment, the valve body is a stainless steel part.
[0007] In one embodiment, the valve cavity further includes a mounting cavity. The mounting cavity is arranged at one end of the threaded cavity away from the valve port. Part of the valve core is located in the mounting cavity and is in sliding connection with the inner wall of the mounting cavity.
[0008] In one embodiment, the wall thickness of the valve body at the mounting cavity is G, the wall thickness of the valve body at the threaded cavity is H, and the wall thickness of the valve body at the valve port is K. G is greater than or equal to 0.3 mm, H is greater than or equal to 0.5 mm, K is greater than or equal to 0.5 mm, and K is greater than H which is greater than G.
[0009] In one of the embodiments, the outer side wall of the valve body integrally protrudes to form a first flange, the first flange surrounds to form the first connecting hole, and the first connecting pipe is in abutting fit with the bottom wall of the first connecting hole; wherein, the first solder is arranged between the outer periphery of the first connecting pipe and the end of the first flange, and part of the first solder is in contact with the first connecting pipe and the first flange.
[0010] In one of the embodiments, the wall thickness of the first connecting pipe is d, and the depth of the first connecting hole is D, wherein D≥4d; and / or, the thickness of the first flange is J, and J≥0.5mm.
[0011] In one of the embodiments, the outer side wall of the valve body integrally protrudes to form a second flange, the second flange surrounds to form a second connecting hole, and the stop valve further comprises a valve nozzle, the valve nozzle is inserted into the second connecting hole, and the outer periphery of the valve nozzle and the end of the second flange are provided with a second solder, and part of the second solder is in contact with the valve nozzle and the second flange.
[0012] In one of the embodiments, the wall thickness of the first connecting pipe is d, and the depth of the second connecting hole is E, wherein E≥4d; and / or, the thickness of the second flange is F, wherein F≥0.5mm.
[0013] In one of the embodiments, the stop valve further comprises a flange plate, the flange plate is sleeved on the outer periphery of the valve body close to the opening end, and the third solder is arranged between the flange plate and the outer wall of the valve body, and part of the third solder is in contact with the flange plate and the valve body.
[0014] In one of the embodiments, the fourth solder is arranged between the outer periphery of the second connecting pipe and the end of the valve body, and at least part of the fourth solder is in contact with the valve body, the second connecting pipe and the flange plate; wherein, the third solder is arranged on the side of the flange plate away from the opening in the axial direction.
[0015] Compared with the prior art, the stop valve provided by the present application can effectively reduce the number of parts of the stop valve by setting the valve body as an integrated type, compared with the structure in which the valve pipe is sleeved on the valve body in the conventional technology, and the valve pipe and the valve body do not need to be aligned and assembled, thereby reducing the assembly and welding steps and reducing the processing difficulty and cost. At the same time, the problem of increased leakage risk caused by too many welding points in the welding of the valve body and the valve pipe in the conventional technology can be avoided, and the quality of the stop valve is greatly improved. In addition, since the valve body of the present application integrates the functions of the conventional valve pipe and valve body, the thickness is relatively thick, which can ensure the structural strength of the valve body. When the valve core, the first connecting pipe and the second connecting pipe are connected with the valve body, the reliability of the connection can be ensured, and the risk of deformation of the valve body under stress can be reduced. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0017] Figure 1 A sectional view of a stop valve according to an embodiment of the present application;
[0018] Figure 2 A sectional view of a valve body according to an embodiment of the present application.
[0019] The meanings of the symbols in the drawings are as follows:
[0020] 100, stop valve; 10, valve body; 101, valve cavity; 1011, mounting cavity; 1012, threaded cavity; 1013, valve port; 1014, opening; 102, first connecting hole; 103, second connecting hole; 11, first flange; 12, second flange; 20, valve core; 21, threaded section; 22, sealing element; 30, first connecting pipe; 31, first solder; 40, second connecting pipe; 41, fourth solder; 50, valve nozzle; 51, second solder; 60, flange plate; 61, third solder. DETAILED DESCRIPTION
[0021] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.
[0022] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the specification of the present application are for the purpose of illustration only and are not intended to be the only implementation.
[0023] In addition, the terms "first", "second", "third", etc. are used herein only to describe different instances, and are not used to indicate or imply relative importance or a number of indications of the technical features indicated. Therefore, the technical features defined as "first", "second", "third", etc. can explicitly or implicitly include at least one of the technical features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited.
[0024] In the present application, unless otherwise explicitly specified and limited, the "upper", "lower", "above", "over", and "on" of the first feature to the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "upper", "over", and "on" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is horizontally higher than the second feature. The "lower", "under", and "below" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is horizontally lower than the second feature.
[0025] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as understood by a person skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the related listed items.
[0026] The stop valve is widely used in the pipeline of the refrigeration system, which usually includes a valve body, a valve core installed in the valve body, and a valve pipe sleeved on the outer periphery of the valve body. The valve pipe is used for connecting with a connecting pipe or the like, and an inner thread is arranged on the inner wall of the valve body, and an outer thread is arranged on the outer wall of the valve core, so that the movement of the valve core in the valve body is realized through the thread cooperation between the outer thread and the inner thread, thereby ensuring the on-off function of the medium in the pipeline.
[0027] In the related art, when the valve pipe is assembled with the valve body, the interface needs to be aligned first to ensure the accuracy of the position when the connecting pipe or the valve nozzle is installed subsequently, thereby improving the complexity of the overall assembly of the stop valve.
[0028] Please refer to Figure 1 and Figure 2 In order to simplify the assembly of the stop valve, the present application provides a stop valve 100, which includes a valve body 10, a valve core 20, a first connecting pipe 30 and a second connecting pipe 40. A valve cavity 101 is formed in the valve body 10. The first connecting pipe 30 and the second connecting pipe 40 are both inserted and connected to the valve body 10 and are both in communication with the valve cavity 101. Optionally, the first connecting pipe 30 is connected to the circumferential side of the valve body 10, and the second connecting pipe 40 is connected to one end of the valve body 10 in the axial direction.
[0029] Please continue to refer to Figure 1 , the valve cavity 101 includes a threaded cavity 1012, a valve port 1013 and an opening 1014 arranged in sequence along the axial direction of the valve cavity 101, the valve core 20 is movably installed in the valve cavity 101, and the valve core 20 is provided with a threaded segment 21, the outer wall of the threaded segment 21 is threadedly matched with the inner wall of the threaded cavity 1012, so that the valve core 20 can be moved along the axial direction of the valve cavity 101 towards the direction of approaching or moving away from the valve port 1013, so as to control the first connecting pipe 30 and the second connecting pipe 40 to realize the on-off through the valve port 1013. Specifically, when the valve core 20 closes the valve port 1013, the valve core 20 can cut off the communication of the medium between the first connecting pipe 30 and the second connecting pipe 40, when the valve core 20 opens the valve port 1013, the medium in the first connecting pipe 30 and the second connecting pipe 40 can realize communication through the valve cavity 101 and the valve port 1013. Wherein, the outer side wall of the valve body 10 is formed with a first connecting hole 102, the first connecting pipe 30 is connected with the first connecting hole 102, and the first connecting pipe 30 is communicated with the threaded cavity 1012, the second connecting pipe 40 is inserted into the opening 1014 and connected with the opening 1014.
[0030] Further, in the present application, the valve body 10 is of an integrated structure, thus, by setting the valve body 10 as an integrated structure, compared with the structure in the prior art that the valve pipe is sleeved outside the valve body, the number of parts of the stop valve 100 can be effectively reduced, and the valve pipe and the valve body do not need to be aligned and assembled, so that the assembly and welding steps can be reduced, and the processing difficulty and cost are reduced. At the same time, the problem of increased leakage risk caused by many welding points in the welding of the valve body and the valve pipe in the prior art can be avoided, and the quality of the stop valve 100 is greatly improved. In addition, since the valve body 10 of the present application integrates the functions of the traditional valve pipe and valve body, the thickness is relatively thick, which can ensure the structural strength of the valve body 10, when the valve core 20, the first connecting pipe 30 and the second connecting pipe 40 are connected with the valve body 10, the reliability of the connection can be ensured, and the risk of stress deformation of the valve body 10 can be reduced.
[0031] Specifically, when the valve body 10 is processed, the blank can be first processed by an integrated cold heading process, and then machined by turning process, so as to obtain the finished product of the valve body 10, which is simple and low in cost. Wherein, the valve body 10 can be set as a stainless steel part, the cost of stainless steel is relatively low, which can effectively reduce the cost.
[0032] In an embodiment, as Figure 2As shown, the valve cavity 101 further comprises a mounting cavity 1011, which is arranged at one end of the threaded cavity 1012 away from the valve port 1013, and part of the valve core 20 is located in the mounting cavity 1011 and in sliding fit with the inner wall of the mounting cavity 1011. That is, the inner wall of the mounting cavity 1011 plays a guiding role for the movement of the valve core 20, thereby improving the coaxiality between the valve body 10 and the valve core 20, ensuring the axial movement of the valve core 20 along the valve cavity 101, realizing reliable sealing of the valve port 1013, and avoiding leakage.
[0033] Specifically, the valve core 20 is provided with a sealing element 22 on the outer wall close to one end of the mounting cavity 1011, so as to realize the movable sealing fit of the valve core 20 and the mounting cavity 1011 through the sealing element 22, thereby reducing the probability of leakage of the medium from the mounting cavity 1011.
[0034] Further, in order to ensure the structural strength of the valve body 10, in an embodiment, the wall thickness of the valve body 10 at the mounting cavity 1011 is G, the wall thickness of the valve body 10 at the threaded cavity 1012 is H, and the wall thickness of the valve body 10 at the valve port 1013 is K, wherein G≥0.3mm, H≥0.5mm, K≥0.5mm, and K>H>G. In this way, the limit pressure strength of the valve body 10 can be met, so that the valve body 10 is not easy to break, and at the same time, the thread strength and sealing strength requirements can also be met, ensuring that the valve body 10 will not be broken at the threaded cavity 1012 and the valve port 1013 during the opening and closing of the valve port 1013.
[0035] It should be noted that the wall thickness of the valve body 10 at the threaded cavity 1012 is the small diameter thickness of the internal thread on the threaded cavity 1012, that is, the thickness from the end of the internal thread on the threaded cavity 1012 close to the axis of the valve cavity 101 to the outer wall of the valve body 10.
[0036] It should be further noted that since the valve body 10 of the present application is of an integrated structure, the mounting cavity 1011, the threaded cavity 1012 and the valve port 1013 can be machined together, thereby ensuring the overall concentricity of the valve cavity 101, improving the reliability of the movement of the valve core 20, ensuring that the valve core 20 can smoothly abut and seal with the valve port 1013, and reducing the probability of leakage. Moreover, the mounting cavity 1011, the threaded cavity 1012, the valve port 1013 and the opening 1014 are arranged in sequence and coaxially along the axis of the valve cavity 101, so as to facilitate machining.
[0037] Since the valve body 10 of the present application is obtained by machining from a blank, in order to meet the size requirements of the valve body 10, in an embodiment, the hole diameter of the mounting cavity 1011 on the finished valve body 10 is A, and the hole diameter of the hole corresponding to the mounting cavity 1011 on the blank is A1, where A-A1≥0.5mm, thus, the machining efficiency of the mounting cavity 1011 can be improved, and when the valve core 20 and the mounting cavity 1011 cooperate, the sealing element 22 can be in close contact with the inner wall of the mounting cavity 1011, preventing leakage of the medium. The hole diameter of the threaded cavity 1012 on the finished valve body 10 is B, and the hole diameter of the hole corresponding to the threaded cavity 1012 on the blank is B1, where B-B1≥0.5mm, here the hole diameter of the threaded cavity 1012 also refers to the hole diameter corresponding to the small diameter of the threaded cavity 1012, thus facilitating the machining and forming of the threaded cavity 1012, and the concentricity of the valve core 20 and the threaded cavity 1012 can be improved. The hole diameter of the valve port 1013 on the finished valve body 10 is C, and the hole diameter of the hole corresponding to the valve port 1013 on the blank is C1, C-C1≥0.5mm, thus facilitating the machining and forming of the valve port 1013, and the sealing effect between the valve core 20 and the valve port 1013 can be improved.
[0038] In an embodiment, the outer side wall of the valve body 10 integrally protrudes to form a first flange 11, the first flange 11 surrounds to form a first connecting hole 102, and the first connecting pipe 30 abuts and cooperates with the bottom wall of the first connecting hole 102, that is, the outer side wall of the valve body 10 forms the bottom wall of the first connecting hole 102, thus, by setting the first flange 11, and by abutting the first connecting pipe 30 with the bottom wall of the first connecting hole 102, the contact area between the valve body 10 and the first connecting pipe 30 can be increased, which is beneficial to improve the connection reliability between the first connecting pipe 30 and the valve body 10, and further reduces the probability of deformation of the first flange 11 caused by stress of the first connecting pipe 30.
[0039] Further, the first solder 31 is arranged between the outer periphery of the first connecting pipe 30 and the end portion of the first flange 11, and part of the first solder 31 is in contact with the first connecting pipe 30 and the first flange 11, so that the first connecting pipe 30 and the first flange 11 can be welded and fixed by the first solder 31. In this way, a stepped structure can be formed between the outer wall of the first connecting pipe 30 and the end portion of the first flange 11, and the first solder 31 is arranged on the stepped structure, which can improve the connection efficiency of the first connecting pipe 30 and the valve body 10.
[0040] Further, the wall thickness of the first connecting pipe 30 is d, and the depth of the first connecting hole 102 is D, where D≥4d, thus, the area of solder penetration can be increased, thereby effectively improving the welding strength of the first connecting pipe 30. The depth D of the first connecting hole 102 can be set to 4d, 4.5d or 5d, etc., which can be reasonably set according to actual needs.
[0041] Further, the first flange 11 has a thickness J, and J≥0.5mm, so as to ensure the strength of the first flange 11 itself and reduce the probability of deformation and fracture of the first flange 11. The thickness J of the first flange 11 can be set to 0.5mm, 0.55mm or 0.6mm, and the like, which are not listed one by one here.
[0042] As shown in Figure 1 The stop valve 100 further includes a flange plate 60, which is sleeved on the outer periphery of the valve body 10 near one end of the opening 1014. The flange plate 60 can be used for installation of the stop valve 100 in the air conditioning system, improving the installation efficiency. The third solder 61 is arranged between the flange plate 60 and the outer wall of the valve body 10, and part of the third solder 61 is in contact with the flange plate 60 and the valve body 10, so that the flange plate 60 and the valve body 10 can be welded and fixed by the third solder 61. In this way, the welding between the flange plate 60 and the valve body 10 is facilitated.
[0043] Specifically, the outer wall of the valve body 10 is recessed to form a step. When the flange plate 60 is installed on the valve body 10, the flange plate 60 can cooperate with the step to form a welding groove, so that the third solder 61 is placed.
[0044] Further, in an embodiment, the fourth solder 41 is arranged between the outer periphery of the second connecting pipe 40 and the end of the valve body 10, and at least part of the fourth solder 41 is in contact with the valve body 10, the second connecting pipe 40 and the flange plate 60, so that the valve body 10, the second connecting pipe 40 and the flange plate 60 can be welded and fixed by the fourth solder 41. In this way, the welding between the second connecting pipe 40 and the valve body 10 can be realized, and at the same time, the welding between the valve body 10 and the flange plate 60 can also be realized by the fourth solder 41 during the welding process. In the present embodiment, the third solder 61 is arranged on the side of the flange plate 60 away from the opening 1014 in the axial direction, that is, the third solder 61 and the fourth solder 41 are arranged on the two ends of the flange plate 60 in the axial direction. In this way, the third solder 61 and the fourth solder 41 cooperate to further improve the welding strength between the flange plate 60 and the valve body 10.
[0045] In an embodiment, as shown in Figure 1As shown, the outer side wall of the valve body 10 is integrally protruded to form a second flange 12, that is, in the embodiment, the valve body 10, the first flange 11 and the second flange 12 are integrally formed. The second flange 12 is surrounded to form a second hole 103, and the stop valve 100 further comprises a valve nozzle 50, which is inserted into the second hole 103 and used to supplement the medium in the valve cavity 101. Moreover, a second solder 51 is arranged between the outer periphery of the valve nozzle 50 and the end of the second flange 12, and part of the second solder 51 is in contact with the valve nozzle 50 and the second flange 12, so that the valve nozzle 50 and the second flange 12 can be welded and fixed by the second solder 51. In this way, by arranging the second flange 12, the contact area between the valve body 10 and the valve nozzle 50 can be increased, which is beneficial to improve the connection strength between the two, and at the same time, a stepped structure can be formed between the outer wall of the valve nozzle 50 and the end of the second flange 12, and the second solder 51 is arranged on the stepped structure, which can improve the connection efficiency of the valve nozzle 50 and the valve body 10.
[0046] Further, the wall thickness of the first connecting pipe 30 is d, and the depth of the second hole 103 is E, wherein E≥4d. In this way, the area of solder penetration can be increased, thereby effectively improving the welding strength of the valve nozzle 50. The depth E of the second hole 103 can be set to 4d, 4.5d or 5d, etc., which can be reasonably set according to actual needs.
[0047] Further, the thickness of the second flange 12 is F, wherein F≥0.5mm. In this way, the strength of the second flange 12 itself can be ensured, and the probability of deformation and fracture of the second flange 12 can be reduced. The thickness F of the second flange 12 can be set to 0.5mm, 0.55mm or 0.6mm, etc., which will not be listed here.
[0048] Optionally, the first solder 31, the second solder 51, the third solder 61 and the fourth solder 41 can all be arranged as welding rings, and the welding operation is simpler.
[0049] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.
[0050] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A stop valve characterized by comprising: The valve body (10) is formed with a first hole (102) on the outer side wall, the first connecting pipe (30) is connected with the first hole (102), and the first connecting pipe (30) communicates with the threaded cavity (1012), the second connecting pipe (40) is inserted into the opening (1014) and connected with the opening (1014); The valve core (20) is movably installed in the valve cavity (101), and a threaded section (21) is arranged on the valve core (20), the outer wall of the threaded section (21) is threadedly matched with the inner wall of the threaded cavity (1012), so that the valve core (20) can move along the axial direction of the valve cavity (101) towards the direction close to or away from the valve port (1013), so as to control the first connecting pipe (30) and the second connecting pipe (40) to be able to pass through the valve port (1013) to be connected or disconnected; The valve body (10) is an integral structure. The valve body (10) is a stainless steel part.
2. The stop valve according to claim 1, characterized by The valve cavity (101) further comprises a mounting cavity (1011) arranged at one end of the threaded cavity (1012) away from the valve port (1013), and part of the valve core (20) is located in the mounting cavity (1011) and slidably matched with the inner wall of the mounting cavity (1011).
3. The shut-off valve according to claim 1, characterized in that The wall thickness of the valve body (10) at the mounting cavity (1011) is G, the wall thickness of the valve body (10) at the threaded cavity (1012) is H, and the wall thickness of the valve body (10) at the valve port (1013) is K, wherein G≥0.3mm, H≥0.5mm, K≥0.5mm, and K>H>G.
4. The shut-off valve according to claim 3, characterized in that The outer side wall of the valve body (10) is integrally formed with a first flange (11), the first flange (11) surrounds the first hole (102), and the first connecting pipe (30) is abutted and matched with the bottom wall of the first hole (102); 5. The shut-off valve according to claim 1, characterized in that The outer periphery of the first connecting pipe (30) and the end of the first flange (11) are provided with a first solder (31), and part of the first solder (31) is in contact with the first connecting pipe (30) and the first flange (11). The wall thickness of the first connecting pipe (30) is d, and the depth of the first hole (102) is D, wherein D≥4d; 6. The shut-off valve according to claim 5, characterized in that And / or, the thickness of the first flange (11) is J, and J≥0.5mm. 7. The shut-off valve according to claim 1, characterized in that The outer side wall of the valve body (10) is integrally protruded to form a second flange (12), the second flange (12) is surrounded to form a second connecting hole (103), the stop valve further comprises a valve nozzle (50), the valve nozzle (50) is inserted into the second connecting hole (103), and the outer periphery of the valve nozzle (50) and the end of the second flange (12) are provided with a second solder (51), and part of the second solder (51) is in contact with the valve nozzle (50) and the second flange (12).
8. The shut-off valve according to claim 7, characterized in that The wall thickness of the first connecting pipe (30) is d, and the depth of the second connecting hole (103) is E, wherein E≥4d; And / or, the thickness of the second flange (12) is F, wherein F≥0.5mm.
9. The shut-off valve according to claim 1, characterized in that The stop valve further comprises a flange plate (60), the flange plate (60) is sleeved on the outer periphery of the valve body (10) close to one end of the opening (1014), and the third solder (61) is arranged between the flange plate (60) and the outer wall of the valve body (10), and part of the third solder (61) is in contact with the flange plate (60) and the valve body (10).
10. The shut-off valve according to claim 9, characterized in that The outer periphery of the second connecting pipe (40) and the end of the valve body (10) are provided with a fourth solder (41), and at least part of the fourth solder (41) is in contact with the valve body (10), the second connecting pipe (40) and the flange plate (60); Wherein, the third solder (61) is arranged on the side of the flange plate (60) away from the opening (1014) in the axial direction.