Anti-disassembly stop valve

Abstract

The utility model discloses an anti-disassembly stop valve, which comprises a valve body, the insert and the valve body are integrally formed; the valve cover is arranged in the insert, and an adjustable valve rod is arranged in the valve cover in a penetrating mode; wherein the lower part of the adjustable valve rod is in threaded connection with the opening and closing valve core; wherein a sealing step is arranged in the valve body, and the opening and closing valve element can abut against the sealing step. According to the anti-disassembly stop valve, the integrally-formed valve body-insert structure and the reliable connection design of the adjustable valve rod and the opening and closing valve element are adopted, and the risk that the stop valve is disassembled arbitrarily by water and electricity workers or ceramic tile workers in the installation and use process is effectively prevented. Meanwhile, through innovative technical means of the sealing step, the sealing ring set and the like, the overall sealing performance of the stop valve is greatly improved, the leakage problem caused by disassembly is avoided, and stability and reliability in the long-term using process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an anti-disassembly stop valve. Background Art

[0002] In the existing pipeline system, pipes are connected by connectors, but some pipes need to be connected with valves according to different connection methods, different functional requirements and different installation environments. Existing valves are usually stainless steel valves, and the interfaces are mostly threaded. Adapters are required when connecting valves to pipes, and threaded connections cannot guarantee sealing. When the pressure in the pipeline increases, water leakage is likely to occur, resulting in economic losses. In traditional construction methods, the stop valve is generally installed in the wall by plumbers first, and then cement workers paste tiles. Since the handle of the stop valve is large, it is blocked when the tiles are installed, and the handle needs to be removed. However, cement workers do not know how to remove the handle, and sometimes the valve body is removed as a whole. When reinstalling, if the valve core is loose and comes out for a while, the length of the valve core exceeds the maximum length when reinstalling, resulting in the valve body thread not being fully screwed in and getting stuck. Plumbers are likely to twist the valve core out of shape or even break the connecting thread. Therefore, various solutions have been proposed on the market to address this problem.

[0003] For example, patent application number CN202023133833.5 discloses a stop valve with an anti-blocking structure for easy disassembly and assembly, including a main body valve and a rotating wheel, a water inlet is provided on one side of the main body valve, and a fixed head is fixed above one end of the main body valve, a through hole is provided in the middle of the fixed head, and a valve top cover is installed in the middle of the upper part of the main body valve through mounting bolts. The stop valve rotating wheel with an anti-blocking structure for easy disassembly and assembly can rotate between the threaded rod and the valve disc, and the second sealing ring is tightly fitted between the valve disc and the flow restriction port. The threaded rod can drive the valve disc to move up and down, so that the flow restriction port can be opened and closed. The second sealing ring can seal the flow restriction port when closed, so as to prevent leakage of water. The sealing cover can be disassembled between the mounting head and the sewage outlet, and the mounting head and the sewage outlet are threadedly connected. The sealing cover can be opened through the mounting head, so that impurities accumulated in the sewage outlet can be discharged.

[0004] Although the above scheme uses mounting bolts to seal the valve body to a certain extent, the scheme still cannot solve the problem of the exposed assembly threads of the stop valve in the current technology, which is at a high risk of disassembly. The main body of the valve is disassembled after installation, which may affect the sealing effect at the least and cause the valve core to fall out at the worst. When it is installed again, the valve core may be damaged or even the valve body threads may be broken. Summary of the invention

[0005] In response to the problem of water leakage at the threaded connection of the stop valve in the prior art mentioned in the background technology, the utility model provides an anti-disassembly stop valve, which effectively improves the stability and reliability of the stop valve during installation and use through innovative technical means such as an integrally formed valve body-insert, an adjustable valve stem-opening and closing valve core connection and a sealing step.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A disassembly-resistant stop valve comprises: a valve body; an insert, which is integrally formed with the valve body; a valve cover, which is arranged in the insert, and an adjustable valve stem is penetrated in the valve cover; wherein the lower part of the adjustable valve stem is threadedly connected to an opening and closing valve core; wherein a sealing step is arranged in the valve body, and the opening and closing valve core can abut against the sealing step.

[0008] The adjustable valve stem is the core component of the present application. The valve stem is connected to the opening and closing valve core through threads and can be engaged with the sealing step in the valve body. When the opening and closing valve core is engaged with the sealing step, the valve is closed; when the valve stem rotates, the opening and closing valve core leaves the sealing step, and the liquid can pass through the valve to achieve an open state. The sealing step in the valve body and the adjustable valve stem are flexibly opened and closed, effectively realizing the control and sealing functions of the stop valve. Compared with the traditional threaded connection method, this solution simplifies the assembly process and improves the reliability and sealing performance of the valve. In actual use, the user can easily control the opening and closing of the valve by rotating the valve stem, thereby meeting the needs of various fluid pipeline systems. The insert and the valve body are an integral structure formed in one piece. This design can effectively prevent the risk of the valve body being disassembled after installation. The valve body and the shell of the traditional stop valve are mostly connected by threads or other detachable connections, which are easy to be disassembled by plumbers or tile workers. Once disassembled, it may affect the sealing effect or even cause the valve core to fall out. It is worth noting that the anti-disassembly valve disclosed in this solution adopts an integrally formed valve body-insert structure, which greatly reduces the possibility of disassembly. This adjustable valve stem design not only meets the basic requirement of smooth water flow, but also further enhances the sealing performance and ensures the stability of the stop valve during use.

[0009] Preferably, the adjustable valve stem includes a lifting rod, a handwheel assembly is provided at the top of the lifting rod, and the handwheel assembly includes a handwheel body and a handwheel body insert provided between the handwheel body and the lifting rod. The rotation of the handwheel assembly can drive the lifting rod to move up and down, thereby controlling the position of the opening and closing valve core to achieve the opening and closing of the valve. In addition, the fixing nut is screwed to the top of the lifting rod and connected to the handwheel body insert to fix the handwheel assembly and ensure its stability. The controllability of the valve is effectively improved, and the user can easily realize the opening and closing operation of the valve by rotating the handwheel, thereby meeting the fluid control requirements in different scenarios.

[0010] Furthermore, a fixing nut is provided at the top of the lifting rod, and the fixing nut is screwed to the lifting rod and abuts against the handwheel body insert. The lifting rod can be driven up and down by the rotation of the handwheel assembly, so as to adjust the position of the opening and closing valve core to realize the opening and closing function. The handwheel drive is not only convenient for the user to operate, but also can ensure the precise controllability of the opening and closing process. At the same time, a fixing nut is also provided at the top of the lifting rod to firmly fix the handwheel body insert on the lifting rod, thereby avoiding the problem of the handwheel loosening or falling off during use. Compared with the traditional stop valve that directly drives the valve core by the handle, the anti-disassembly stop valve adopts a handwheel-driven adjustable valve stem design, which is not only easy to operate, but also can ensure more stable and reliable during installation and use.

[0011] Preferably, an anti-disassembly nut is provided at the joint between the lifting rod and the top of the valve cover; the top of the valve cover is threadedly connected to the anti-disassembly nut, a limited retaining spring is provided on the top of the anti-disassembly nut, and a mounting groove is provided on the lifting rod corresponding to the limited retaining spring, and the limited retaining spring clamps the mounting groove. An anti-disassembly nut is provided on the upper part of the adjustable valve stem and is threadedly connected to the top of the valve cover. At the same time, a limited retaining spring is also provided on the top of the anti-disassembly nut, which is used in conjunction with the corresponding mounting groove on the valve stem. This joint design of the anti-disassembly nut and the limited retaining spring can effectively prevent the valve body from being disassembled by plumbers or tile workers without authorization during installation and use. Even if the anti-disassembly nut is forcibly removed, it can ensure that the opening and closing valve core will not be pulled out, avoiding the serious consequences caused by the detachment of the valve core. This anti-disassembly design not only enhances the overall stability of the valve, but also effectively curbs the arbitrary disassembly of the valve body by non-professionals, thereby maximizing the protection of the service life and performance of the valve.

[0012] Furthermore, a sealing ring group is provided between the valve cover head and the lifting rod, and a limiting groove group is provided on the lifting rod corresponding to the sealing ring group. A sealing ring group is provided at the junction of the top of the valve cover and the adjustable valve stem. At the same time, a limiting groove group corresponding to the sealing ring group is also provided on the valve stem. The coordinated design of the sealing ring group and the limiting groove group can effectively prevent leakage problems during the opening and closing of the valve. Compared with the traditional stop valve that only relies on threaded connection to achieve sealing, the anti-disassembly valve greatly improves the sealing performance with the assistance of the sealing ring group and the limiting groove group, thereby ensuring the reliability and stability of the valve during use.

[0013] Furthermore, a closed ring is provided at the outer edge of the valve cover corresponding to the top of the insert, a valve body sealing ring is installed between the bottom of the closed ring and the joint of the valve cover and the insert, and the bottom of the valve cover is threadedly connected to the insert. The combined use of the closed ring and the sealing ring, plus the threaded connection between the valve cover and the insert, can not only prevent the leakage of media such as water and gas, but also ensure a stable connection between the valve cover and the valve body, avoiding overall breakage caused by external forces. The sealing performance and reliability of the anti-disassembly stop valve during installation and use are further enhanced.

[0014] Preferably, an anti-rotation hole is provided at the bottom of the valve cover corresponding to the penetration of the valve stem, and the opening and closing valve core includes a stud and a sealing cover provided at the bottom of the stud, and the stud is screwed to the outside of the valve stem, and the profile of the stud corresponds to the hole type of the anti-rotation hole. The coordination of the anti-rotation hole and the profile design of the stud of the opening and closing valve core is to solve the problem that when the valve stem rotates, the friction between the threads will drive the opening and closing valve core to rotate together, thereby failing to achieve the purpose of lifting and lowering. After the anti-rotation hole is provided, after the valve stem drives the opening and closing valve core to rotate a certain angle, the stud of the opening and closing valve core will be blocked by the anti-rotation hole at the bottom of the valve cover, thereby completing the threaded engagement action to achieve the lifting and lowering action of the opening and closing valve core.

[0015] Preferably, the sealing cover is coated with a sealing colloid, which is an elastic member. The sealing cover at the bottom of the opening and closing valve core is also covered with an elastic sealing colloid. The design of this sealing colloid can form a good sealing effect when the valve core contacts the sealing step of the valve body, avoiding the leakage problem caused by wear of the contact surface. Compared with the traditional stop valve that only relies on mechanical contact to achieve sealing, the anti-disassembly valve greatly improves the sealing performance by adding an elastic sealing colloid at the bottom of the valve core, thereby ensuring that the valve can still maintain a stable and reliable sealing effect during long-term use. In addition, the elastic sealing colloid also has a certain buffering effect, which can absorb the impact force generated during the opening and closing process of the valve core to a certain extent, further improving the service life of the valve. This design of adding an elastic sealing colloid at the bottom of the opening and closing valve core can not only enhance the sealing performance of the valve, but also improve its impact resistance.

[0016] Preferably, the top of the valve stem is a fixed nut installation section; a handwheel connection platform is provided below the fixed nut installation section, and the handwheel body insert is sleeved and connected to the handwheel connection platform; below the handwheel connection platform is a light column section, and the limit groove group is provided on the light column section, and the lower part of the light column section is provided with an external thread, and the light column is screwed to the opening and closing valve core through the external thread. The fixed nut installation section is used to connect with the fixed nut mentioned above, and the handwheel connection platform is used to be sleeved and connected with the handwheel body insert. The light column section is provided with a limit groove group used in conjunction with the sealing ring group. The segmented valve stem structure design can not only ensure the reliable connection between the handwheel assembly and the valve stem, but also further enhance the sealing performance between the valve stem and the valve cover through the setting of the limit groove group. Compared with the traditional single-structure valve stem, the segmented design has a clearer functional division of labor, and the cooperation between each part is more precise, making the entire adjustable valve stem system more stable and reliable. In addition, a threaded connection section is provided below the light column section for threaded connection with the opening and closing valve core. Not only does it make the structure of the valve stem more reasonable, but it is also more convenient and flexible during manufacturing and assembly, which is beneficial to improving production efficiency and product quality.

[0017] Preferably, the outline of the handwheel connection platform is a polygonal structure, and the handwheel body insert is sleeved on the handwheel connection platform. This polygonal structure of the handwheel connection platform can effectively prevent the handwheel body from rotating during installation, ensuring that the handwheel assembly can maintain a stable connection with the valve stem. Compared with the cylindrical handwheel connection platform used in traditional stop valves, the polygonal structure has a stronger anti-rotation property. This can not only avoid the problem of the handwheel loosening or falling off during use, but also further enhance the stability of the entire adjustable valve stem system. The simple and ingenious polygonal structure design fully reflects the innovative ability of this solution in detail optimization, and further improves the reliability and convenience of the anti-disassembly stop valve.

[0018] Therefore, the utility model has the following beneficial effects:

[0019] (1) The anti-disassembly stop valve of this application adopts an integrated valve body-insert structure and a reliable connection design between the adjustable valve stem and the opening and closing valve core, which effectively prevents the risk of unauthorized disassembly by plumbers or tile workers during installation and use. At the same time, through innovative technical means such as sealing steps and sealing ring groups, the overall sealing performance of the stop valve is greatly improved, avoiding leakage problems caused by disassembly, and ensuring stable reliability during long-term use.

[0020] (2) The anti-disassembly stop valve of the present application adopts an adjustable valve stem structure driven by a handwheel, which is not only convenient for users to operate, but also ensures the precise control of the opening and closing process. At the same time, the segmented design of the valve stem and the polygonal structure of the handwheel connection platform further optimize the overall stability of the valve stem system and avoid the loosening or falling problems that are prone to occur in traditional stop valves. These innovative designs for the adjustable valve stem have greatly improved the reliability of the stop valve of the present application during use.

[0021] (3) The anti-disassembly stop valve of the present application is also provided with an anti-disassembly nut and a limit spring above the adjustable valve stem, which can effectively prevent plumbers or tile workers from disassembling the valve body without authorization. Even if the anti-disassembly nut is forcibly removed, it can ensure that the opening and closing valve core is not pulled out, avoiding the serious consequences caused by the valve core detaching. This multiple anti-disassembly design greatly reduces the risk of the valve being damaged by non-professionals during installation and use.

[0022] (4) The anti-disassembly stop valve of the present application also adds an elastic sealing colloid at the bottom of the opening and closing valve core. This elastic sealing colloid can not only effectively fill the wear gap of the contact surface and improve the sealing performance, but also absorb the impact force generated during the opening and closing process of the valve core, further improving the service life of the valve. These optimized designs for sealing performance have greatly enhanced the reliability and stability of the stop valve of the present application in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the utility model.

[0024] Figure 2 yes Figure 1 Exploded view of the adjustable stem.

[0025] Figure 3 yes Figure 2 Axonometric view of the middle valve cover.

[0026] Figure 4 yes Figure 2 Axonometric view of the center opening and closing valve core.

[0027] Figure 5 yes Figure 2 Axonometric view of the center lift rod.

[0028] Adjustable valve stem 100, valve body 1, sealing step 1.1, insert 2, valve cover 3, anti-rotation hole 3.1, closing ring 3.2, lifting rod 4, handwheel connecting platform 4.1, mounting groove 4.2, limit groove group 4.3, light column section 4.4, opening and closing valve core 5, stud 5.1, sealing cover 5.2, sealing colloid 5.3, anti-disassembly nut 6, limit retaining spring 7, handwheel body 8, handwheel body insert 9, handwheel cover 10, fixing nut 11, valve body sealing ring 12, sealing rubber ring 1 13, sealing rubber ring 2 14. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Example 1

[0031] like Figure 1 , 2 As shown, an anti-disassembly stop valve comprises: a valve body 1; an insert 2, the insert and the valve body are integrally formed; a valve cover 3, the valve cover is arranged in the insert, and an adjustable valve limit spring rod 100 is arranged through the valve cover; wherein the lower part of the adjustable valve stem is threadedly connected to the opening and closing valve core 5; wherein a sealing step 1.1 is arranged in the valve body, and the opening and closing valve core can abut against the sealing step 1.1. An anti-rotation hole 3.1 is arranged at the bottom of the valve cover corresponding to the penetration of the valve stem, and the opening and closing valve core comprises a stud 5.1 and a sealing cover 5.2 arranged at the bottom of the stud 5.1, and the stud 5.1 is screwed to the outside of the valve stem, and the profile of the stud 5.1 corresponds to the hole type of the anti-rotation hole 3.1. The valve stem includes a fixing nut mounting section at the top; a handwheel connecting platform 4.1 is arranged below the fixing nut mounting section, and the handwheel body insert is sleeved and connected to the handwheel connecting platform 4.1; a light column section 4.4 is arranged below the handwheel connecting platform 4.1, the limit groove group 4.3 is arranged on the light column section 4.4, and an external thread is arranged at the lower part of the light column section 4.4, and the light column is screwed to the opening and closing valve core through the external thread.

[0032] The adjustable valve stem is the core component of the present application. The valve stem is connected to the opening and closing valve core through threads and can be engaged with the sealing step in the valve body. When the opening and closing valve core is engaged with the sealing step, the valve is closed; when the valve stem rotates, the opening and closing valve core leaves the sealing step, and the liquid can pass through the valve to achieve an open state. The sealing step in the valve body and the adjustable valve stem are flexibly opened and closed, effectively realizing the control and sealing functions of the stop valve. Compared with the traditional threaded connection method, this solution simplifies the assembly process and improves the reliability and sealing performance of the valve. In actual use, the user can easily control the opening and closing of the valve by rotating the valve stem, thereby meeting the needs of various fluid pipeline systems. The insert and the valve body are an integral structure formed in one piece. This design can effectively prevent the risk of the valve body being disassembled after installation. The valve body and the shell of the traditional stop valve are mostly connected by threads or other detachable connections, which are easy to be disassembled by plumbers or tile workers. Once disassembled, it may affect the sealing effect or even cause the valve core to fall out. It is worth noting that the anti-disassembly valve disclosed in this solution adopts an integrally formed valve body-insert structure, which greatly reduces the possibility of disassembly. This adjustable valve stem design not only meets the basic requirement of smooth water flow, but also further enhances the sealing performance and ensures the stability of the stop valve during use. Figure 3 , 4 As shown in the figure, the anti-rotation hole 3.1 and the opening and closing valve core stud 5.1 are designed in a coordinated manner to solve the problem that when the valve stem rotates, the friction between the threads will drive the opening and closing valve core to rotate together, thereby failing to achieve the lifting purpose. After the anti-rotation hole 3.1 is set, after the valve stem drives the opening and closing valve core to rotate a certain angle, the stud 5.1 of the opening and closing valve core will be blocked by the anti-rotation hole 3.1 at the bottom of the valve cover, thereby completing the threaded engagement action to achieve the lifting and lowering action of the opening and closing valve core.

[0033] The adjustable valve stem includes a lifting rod 4, a handwheel assembly is arranged at the top of the lifting rod 4, and the handwheel assembly includes a handwheel body 8 and a handwheel body insert 9 arranged between the handwheel body and the lifting rod 4. A fixing nut 11 is arranged at the top of the lifting rod 4, and the fixing nut 11 is screwed to the lifting rod 4 and abuts against the handwheel body insert. The outline of the handwheel connection platform 4.1 is a polygonal structure, and the handwheel body insert is sleeved on the handwheel connection platform 4.1.

[0034] The rotation of the handwheel assembly can drive the lifting rod to move up and down, thereby controlling the position of the opening and closing valve core and realizing the opening and closing of the valve. In addition, the fixing nut 11 is screwed on the top of the lifting rod and connected to the handwheel body insert to fix the handwheel assembly and ensure its stability. The controllability of the valve is effectively improved, and the user can easily realize the opening and closing operation of the valve by rotating the handwheel, thereby meeting the fluid control requirements in different scenarios. An assembly cavity is provided on the upper part of the handwheel body, and the fixing nut 11 is installed in the assembly cavity, and a handwheel cover 10 is placed on the top of the assembly cavity to ensure that the fixing nut 11 is covered and protected. The rotation of the handwheel assembly can drive the lifting rod to move up and down, thereby adjusting the position of the opening and closing valve core to realize the opening and closing function. The handwheel drive is not only convenient for the user to operate, but also can ensure the precise controllability of the opening and closing process. At the same time, a fixing nut 11 is also provided on the top of the lifting rod to firmly fix the handwheel body insert on the lifting rod, thereby avoiding the problem of loosening or falling off of the handwheel during use. Compared with the traditional stop valve that directly drives the valve core with a handle, the anti-disassembly stop valve of the present application adopts an adjustable valve stem design driven by a handwheel, which is not only easy to operate, but also can ensure more stability and reliability during installation and use. The polygonal structure of the handwheel connection platform 4.1 can effectively prevent the handwheel body from rotating during installation, ensuring that the handwheel assembly can maintain a stable connection with the valve stem. Compared with the cylindrical handwheel connection platform 4.1 used in the traditional stop valve, the polygonal structure has a stronger anti-rotation property. This can not only avoid the problem of the handwheel loosening or falling off during use, but also further enhance the stability of the entire adjustable valve stem system. The simple and ingenious polygonal structure design fully reflects the innovative ability of this solution in detail optimization, and further improves the reliability and convenience of the anti-disassembly stop valve.

[0035] like Figure 5 As shown, the fixing nut installation section is used to connect with the fixing nut mentioned above, and the handwheel connection platform 4.1 is used to be fitted and connected with the handwheel body insert. The light column section 4.4 is provided with a limit groove group 4.3 used in conjunction with the sealing ring group. The segmented valve stem structure design can not only ensure the reliable connection between the handwheel assembly and the valve stem, but also further enhance the sealing performance between the valve stem and the valve cover through the setting of the limit groove group 4.3. Compared with the traditional single-structure valve stem, the segmented design has a clearer functional division of labor, and the coordination between various parts is more precise, making the entire adjustable valve stem system more stable and reliable. In addition, a threaded connection section is provided below the light column section 4.4 for threaded connection with the opening and closing valve core. Not only does it make the structure of the valve stem more reasonable, but it is also more convenient and flexible during manufacturing and assembly, which is conducive to improving production efficiency and product quality.

[0036] In this embodiment, an anti-disassembly nut 6 is provided at the joint between the lifting rod and the top of the valve cover; the top of the valve cover is threadedly connected to the anti-disassembly nut 6, and a limited retaining spring 7 is provided at the top of the anti-disassembly nut 6. A mounting groove 4.2 is provided on the lifting rod corresponding to the limited retaining spring 7, and the retaining spring 7 clamps the mounting groove 4.2. A sealing ring group is provided between the head of the valve cover and the lifting rod, and a limited groove group 4.3 is provided on the lifting rod corresponding to the sealing ring group. A sealing ring group is provided at the joint between the top of the valve cover and the adjustable valve stem, and the sealing ring group includes a sealing rubber ring 13 and a sealing rubber ring 2 14 arranged up and down, which are combined together to form a sealing structure. At the same time, a limited groove group 4.3 corresponding to the sealing ring group is also provided on the valve stem. A sealing colloid 5.3 is coated on the sealing cover 5.2, and the sealing colloid 5.3 is an elastic member.

[0037] An anti-disassembly nut 6 is provided on the upper part of the adjustable valve stem, and is threadedly connected to the top of the valve cover. At the same time, a limit retaining spring 7 is also provided on the top of the anti-disassembly nut 6, which is used in conjunction with the corresponding installation groove 4.2 on the valve stem. The combined design of the anti-disassembly nut 6 and the limit retaining spring 7 can effectively prevent the valve body from being disassembled by plumbers or tile workers without authorization during installation and use. Even if the anti-disassembly nut 6 is forcibly removed, it can ensure that the opening and closing valve core will not be pulled out, thereby avoiding the serious consequences caused by the valve core detachment. This anti-disassembly design not only enhances the overall stability of the valve, but also effectively curbs the arbitrary disassembly of the valve body by non-professionals, thereby maximizing the protection of the service life and performance of the valve. The matching design of the sealing ring group and the limit groove group 4.3 can effectively prevent leakage problems during the opening and closing of the valve. Compared with the traditional stop valve that only relies on threaded connection to achieve sealing, the anti-disassembly valve greatly improves the sealing performance with the assistance of the sealing ring group and the limit groove group 4.3, thereby ensuring the reliability and stability of the valve during use.

[0038] like Figure 3 As shown, it is worth noting that a closed ring 3.2 is provided at the outer edge of the valve cover corresponding to the top of the insert, a valve body sealing ring 12 is installed between the bottom of the closed ring 3.2 and the joint between the valve cover and the insert, and the bottom of the valve cover is threadedly connected to the insert. The combined use of the closed ring 3.2 and the sealing ring, plus the threaded connection between the valve cover and the insert, can not only prevent the leakage of media such as water and gas, but also ensure a stable connection between the valve cover and the valve body, avoiding overall breakage caused by external forces. The sealing performance and reliability of the anti-disassembly stop valve during installation and use are further enhanced.

[0039] The elastic sealing colloid 5.3 covers the sealing cover 5.2 at the bottom of the opening and closing valve core. The design of the sealing colloid 5.3 can form a good sealing effect when the valve core contacts the sealing step of the valve body, avoiding the leakage problem caused by the wear of the contact surface. Compared with the traditional stop valve that only relies on mechanical contact to achieve sealing, the anti-disassembly valve greatly improves the sealing performance by adding the elastic sealing colloid 5.3 at the bottom of the valve core, thereby ensuring that the valve can still maintain a stable and reliable sealing effect during long-term use. In addition, the elastic sealing colloid 5.3 also has a certain buffering effect, which can absorb the impact force generated during the opening and closing process of the valve core to a certain extent, further improving the service life of the valve. This design of adding the elastic sealing colloid 5.3 at the bottom of the opening and closing valve core can not only enhance the sealing performance of the valve, but also improve its impact resistance.

[0040] The core of the anti-disassembly stop valve lies in its ingenious structural design. Through innovative technical means such as one-piece valve body and insert, reliable connection between adjustable valve stem and opening and closing valve core, and multiple anti-disassembly measures, it effectively solves the prominent problems of traditional stop valves that are easy to be disassembled and leak.

[0041] In this embodiment, the valve body and the insert are an integral structure formed by integral injection molding. This integral molding design greatly reduces the risk of the valve body being disassembled during installation and use, and avoids the degradation of sealing performance caused by unauthorized disassembly by non-professionals. At the same time, a sealing step is also provided inside the valve body, and the opening and closing valve core can abut against the step to achieve reliable sealing, further ensuring the stability of the stop valve during use.

[0042] Secondly, the anti-disassembly stop valve adopts a unique design of adjustable valve stem. The lower part of the valve stem is connected to the opening and closing valve core through threads, and the position of the valve core can be adjusted up and down to realize the opening and closing function of the stop valve. This adjustable valve stem design not only meets the basic requirements of smooth water flow, but also enhances the overall sealing performance. It is worth mentioning that the top of the valve stem is provided with a fixing nut and a polygonal handwheel connection step, which can ensure the stable connection between the handwheel assembly and the valve stem, avoiding the problem of loosening or falling off of the handwheel that is easy to occur in traditional stop valves.

[0043] In addition, the anti-disassembly stop valve is also designed with a unique anti-disassembly structure on the upper part of the adjustable valve stem. An anti-disassembly nut 6 is arranged between the top of the valve cover and the valve stem, and cooperates with the mounting groove 4.2 on the valve stem through a limit spring 7 to form a reliable anti-disassembly locking mechanism. Even if the anti-disassembly nut 6 is forcibly removed, it can ensure that the opening and closing valve core will not be pulled out, avoiding the serious consequences caused by the valve core detaching. This multiple anti-disassembly design greatly improves the stability of the stop valve during installation and use.

[0044] At the same time, the anti-disassembly stop valve has also been fully optimized in terms of sealing performance. In addition to the aforementioned sealing step design, a sealing ring group is also provided between the valve stem and the valve cover, and an elastic sealing colloid 5.3 is added to the bottom of the opening and closing valve core. These innovative sealing designs can not only effectively prevent leakage, but also have good impact resistance, ensuring that the stop valve can still maintain a stable and reliable sealing effect during long-term use. In addition, the anti-disassembly stop valve uses a copper-plastic composite material instead of a traditional stainless steel metal structure. This material selection not only gives the stop valve good corrosion resistance, but also allows direct hot-melt connection with similar pipes, avoiding the potential leakage hazards of traditional threaded connections.

[0045] In this embodiment, when installing and using the anti-disassembly stop valve, the valve body and the connected pipe need to be connected by hot-melt welding. This design of using weldable materials such as PPR or PE to make the valve body can not only avoid the leakage problem that is easy to occur in traditional stainless steel threaded connections, but also can achieve one-piece molding with similar pipes, greatly simplifying the installation process.

[0046] After installation, the user can control the opening and closing of the stop valve by means of a hand wheel. The hand wheel cooperates with the square step at the top of the lifting rod through the copper insert at the center thereof, thereby driving the lifting rod to rotate. The threaded section below the lifting rod meshes with the thread inside the opening and closing valve core (5). As the lifting rod rotates, the valve core moves up and down along a predetermined trajectory, thereby realizing opening and closing control. It is worth noting that a polygonal opening matching the shape of the valve core is provided at the bottom of the valve cover, which can effectively prevent the valve core from rotating when the lifting rod rotates, thereby ensuring that it can stably move up and down in the vertical direction.

[0047] At the same time, the anti-disassembly stop valve is also provided with a joint design of an anti-disassembly nut 6 and a limit spring 7 on the top of the valve cover. The anti-disassembly nut 6 cooperates with the thread on the top of the valve cover, and after installation, the limit spring 7 is used to fix it in the reserved groove on the lifting rod, forming a reliable anti-disassembly locking mechanism. Even if the user tries to forcibly remove the anti-disassembly nut 6, the valve body cannot be completely disassembled, which effectively curbs the destructive behavior of non-professionals.

[0048] In addition, a layer of elastic sealing colloid 5.3 is provided at the bottom of the opening and closing valve core. This elastic sealing colloid 5.3 can produce good fitting deformation when the valve core contacts the valve body sealing step, thereby forming a reliable sealing effect. Compared with the traditional stop valve that only relies on mechanical contact to achieve sealing, this design can effectively make up for the gap caused by contact surface wear, ensuring that excellent sealing performance is always maintained during long-term use.

[0049] At the same time, the elastic sealing colloid 5.3 also has a certain buffering effect, which can absorb the impact force generated during the opening and closing process of the valve core to a certain extent, further improving the impact resistance and service life of the valve. In addition, the anti-disassembly stop valve is also provided with sealing ring groups between the valve stem and the valve cover, and between the valve cover and the valve body insert. The multi-layer design of these sealing measures can not only effectively prevent the leakage of the medium, but also ensure the stable connection between the various components to avoid the overall breakage caused by external forces.

[0050] The stop valve disclosed in this embodiment gives full play to the advantages of the existing technology, and on this basis integrates a number of innovative means, and has reached a high level in terms of structural design, function realization and manufacturing process, etc. It can not only meet the basic requirements of users for the stability and reliability of the stop valve, but also has unique advantages such as anti-disassembly and corrosion resistance, which not only meets the actual application needs but also reflects strong market competitiveness.

Claims

1. An anti-disassembly stop valve, characterized in that: include: Valve body; Insert, the insert is integrally formed with the valve body; A valve cover is arranged in the insert, and an adjustable valve stem is arranged through the valve cover; Wherein, the lower part of the adjustable valve stem is threadedly connected to the opening and closing valve core; Wherein, a sealing step is arranged in the valve body, and the opening and closing valve core can abut against the sealing step.

2. The anti-disassembly stop valve according to claim 1, characterized in that: The adjustable valve stem comprises a lifting rod, a handwheel assembly is arranged at the top end of the lifting rod, and the handwheel assembly comprises a handwheel body and a handwheel body insert arranged between the handwheel body and the lifting rod.

3. The anti-disassembly stop valve according to claim 2, characterized in that: A fixing nut is arranged on the top of the lifting rod, and the fixing nut is threadedly connected to the lifting rod and abuts against the hand wheel body insert.

4. The anti-disassembly stop valve according to claim 2, characterized in that: An anti-dismantling nut is provided at the joint between the lifting rod and the top of the valve cover; the top of the valve cover is threadedly connected with the anti-dismantling nut, a limiting retaining spring is provided on the top of the anti-dismantling nut, and an installation groove is provided on the lifting rod corresponding to the limiting retaining spring, and the limiting retaining spring clamps the installation groove.

5. The anti-disassembly stop valve according to claim 4, characterized in that: A sealing ring group is arranged between the valve cover head and the lifting rod, and a limiting groove group is arranged on the lifting rod corresponding to the sealing ring group.

6. The anti-disassembly stop valve according to any one of claims 1 to 5, characterized in that: A closed ring is arranged at the outer edge of the valve cover corresponding to the top of the insert, a valve body sealing ring is installed between the joint between the bottom of the closed ring and the valve cover and the insert, and the bottom of the valve cover is threadedly connected with the insert.

7. The anti-disassembly stop valve according to claim 2, characterized in that: An anti-rotation hole is provided at the bottom of the valve cover corresponding to the penetration point of the lifting rod. The opening and closing valve core includes a stud and a sealing cover arranged at the bottom of the stud. The stud is screwed to the outside of the lifting rod, and the profile of the stud corresponds to the hole type of the anti-rotation hole.

8. The anti-disassembly stop valve according to claim 7, characterized in that: The sealing cover is coated with a sealing colloid, and the sealing colloid is an elastic member.

9. The anti-disassembly stop valve according to claim 5, characterized in that: The top of the lifting rod is a fixed nut installation section; a handwheel connecting platform is arranged below the fixed nut installation section, and the handwheel body insert is sleeved and connected to the handwheel connecting platform; below the handwheel connecting platform is a light column section, the limit groove group is arranged on the light column section, and the lower part of the light column section is provided with an external thread, and the light column is screwed to the opening and closing valve core through the external thread.

10. The anti-disassembly stop valve according to claim 9, characterized in that: The outline of the handwheel connecting platform is a polygonal structure, and the handwheel body insert is sleeved on the handwheel connecting platform.

Images