Filtering mechanism and filtering valve

Abstract

The utility model belongs to the technical field of magnetic filtration, and discloses a filter mechanism and a filter valve. The filtering mechanism comprises a filter screen assembly and a bottom cover which are mutually fixed, the filter screen assembly is of an annular structure and comprises a framework and a filter screen fixed to the framework, the bottom cover is provided with an embedding groove, and at least part of the framework is embedded and fixed into the embedding groove. The framework serves as a supporting base body, the filter screen is fixed to the framework, and at least part of the framework is embedded and fixed to the bottom cover to connect the filter screen and the bottom cover, so that the mode that the filter screen is directly subjected to complex machining or powerful connection is avoided, and the connection difficulty caused by deformation of the filter screen is overcome; and the filter screen and the bottom cover can be respectively formed by adopting different materials, so that the flexibility is higher.

Description

Technical Field

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

[0002] When using pipelines to transport liquids, filter valves are needed to control the flow of liquid while simultaneously filtering it, thus ensuring the quality of the liquid exiting the pipeline. Filter valves have a filtration mechanism, which typically includes a filter screen and a bottom cover, to filter larger particles in the liquid. During use, the filter screen may become clogged, therefore it needs to be cleaned regularly.

[0003] To facilitate cleaning of the filter screen, the filter screen and the bottom cover are usually fixed together and installed in the valve body of the filter valve. When the filter screen needs to be cleaned, simply remove the bottom cover of the filter mechanism and the filter screen will be removed together.

[0004] In the prior art, due to the different materials of the filter screen and the bottom cover, the filter screen and the bottom cover are usually fixed by interference fit or glue. The reliability of the above fixing methods is not high, and they are prone to detachment after long-term use.

[0005] Therefore, a filtration mechanism and a filter valve are needed to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a filtration mechanism and a filter valve, with a stable connection between the filter screen and the bottom cover, and high reliability.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A filtration mechanism includes a filter assembly and a bottom cover fixed to each other. The filter assembly has a ring-shaped structure and includes a frame and a filter fixed to the frame. The bottom cover has a groove in which at least a portion of the frame is embedded and fixed.

[0009] Preferably, the groove is formed on the outer peripheral wall of the bottom cover.

[0010] Preferably, the groove is arranged in a ring shape, and the skeleton includes a skeleton body and an embedding part embedded in the groove. The embedding part is disposed at one end of the skeleton body and extends from the inner wall of the skeleton body towards the center.

[0011] Preferably, the filter screen is fixed to the frame body, and the filter screen includes a water-passing filtration section and an overlapping section that overlaps with the frame body, the overlapping section being integrated into the interior of the corresponding frame body.

[0012] Preferably, the filter and the bottom cover are connected by an injection-molded skeleton.

[0013] Preferably, the filter assembly has a notch on its side.

[0014] Preferably, the filtration mechanism further includes a magnetic element detachably connected to the bottom cover and extending into the interior of the filter assembly.

[0015] A filter valve includes a valve body with a communicating flow channel and a filter chamber inside the valve body, and an assembly port on the filter chamber. The filter valve also includes a filter mechanism as described above, which is detachably fixed to the assembly port, and the filter screen assembly extends into the filter chamber.

[0016] Preferably, the filter mechanism is detachably connected to the assembly port via a plug-in assembly. The plug-in assembly includes a plug hole, a pin groove, and a plug member. The plug hole is opened in the assembly port and penetrates the inner wall of the assembly port. The pin groove is disposed in the bottom cover, and the plug hole and the pin groove are correspondingly disposed. The plug member can be inserted into the plug hole, and at least a portion of the plug member is simultaneously confined in the plug hole and the pin groove.

[0017] The bottom cover is provided with a buckle on its outer periphery, which can abut against the plug-in to limit the plug-in.

[0018] The beneficial effects of this utility model are:

[0019] This filtration mechanism includes a filter assembly and a bottom cover that are fixed to each other. The filter assembly has a ring-shaped structure and includes a frame and a filter screen fixed to the frame. The bottom cover has a groove in which at least a portion of the frame is embedded and fixed. The frame serves as a support base, and the filter screen is fixed to the frame to form the filter assembly. By creating a groove in the bottom cover, at least a portion of the frame is embedded and fixed within the groove, thus achieving a fixed connection between the filter assembly and the bottom cover.

[0020] Compared to existing technologies, the filtration mechanism of this invention uses a frame as a supporting base to fix the filter screen to the frame, so that at least part of the frame is embedded and fixed to the bottom cover to connect the filter screen and the bottom cover. This avoids complex processing or strong connection methods for the filter screen and overcomes the connection difficulties caused by filter screen deformation. Moreover, compared to the method of directly molding the filter screen and the bottom cover in one piece, different materials can be used to mold the filter screen and the bottom cover separately, which is more flexible.

[0021] The filter valve includes a valve body and the aforementioned filter mechanism. The valve body has a connected flow channel and a filter chamber. The filter chamber has an assembly port, and the filter mechanism is detachably connected to the assembly port, with the filter screen assembly extending into the filter chamber. When liquid enters the filter chamber of this filter valve through the flow channel, the filter mechanism filters the liquid. The filtered liquid flows out through the flow channel, ensuring the quality of the liquid delivered through the pipeline. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the filtration mechanism provided by this utility model;

[0023] Figure 2 This is a cross-sectional schematic diagram of the filtration mechanism provided by this utility model;

[0024] Figure 3 This is a side view of the filtration mechanism provided by this utility model;

[0025] Figure 4 This is a cross-sectional schematic diagram of the filter valve provided by this utility model;

[0026] Figure 5 This is a schematic diagram of the valve body provided by this utility model;

[0027] Figure 6 This is a structural schematic diagram of the connector provided by this utility model.

[0028] In the picture:

[0029] 100. Valve body; 101. Flow channel; 102. Filter chamber; 103. Insertion hole; 104. Assembly slot;

[0030] 200. Connector; 201. Connecting part; 202. Connecting rod;

[0031] 1. Filter assembly; 11. Frame; 111. Frame body; 112. Embedded part; 12. Filter; 121. Notch;

[0032] 2. Bottom cover; 21. Insert groove; 22. Pin groove; 23. Reverse fastener; 231. Extension; 232. Reverse fastener; 24. Sealing groove; 25. Threaded section;

[0033] 3. Magnetic components;

[0034] 4. Sealing components. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] like Figures 1-3 As shown, this embodiment provides a filtration mechanism, which includes a filter assembly 1 and a bottom cover 2 fixed to each other. The filter assembly 1 has a ring-shaped structure and includes a frame 11 and a filter 12 fixed to the frame 11. The bottom cover 2 has a groove 21, in which at least a portion of the frame 11 is embedded and fixed. The frame 11 serves as a supporting base, and the filter 12 is fixed to the frame 11 to form the filter assembly 1. By creating the groove 21 on the bottom cover 2, at least a portion of the frame 11 is embedded and fixed within the groove 21, thereby achieving a fixed connection between the filter assembly 1 and the bottom cover 2.

[0040] Compared with the prior art, the filtering mechanism of this embodiment uses the skeleton 11 as the supporting matrix, and fixes the filter screen 12 on the skeleton 11, so that at least part of the skeleton 11 is embedded and fixed in the bottom cover 2 to connect the filter screen 12 and the bottom cover 2, avoiding complex processing or strong connection methods directly for the filter screen 12, and overcoming the connection difficulties caused by the deformation of the filter screen 12; and compared with the method of directly integrally forming the filter screen 12 and the bottom cover 2, different materials can be used to form the filter screen 12 and the bottom cover 2 respectively, with higher flexibility.

[0041] It should be noted that the bottom cover 2 usually needs to be exposed to the air, and the material of the bottom cover 2 can be selected from metals with good corrosion resistance such as brass and stainless steel; the filter screen 12 is used to filter impurities in the liquid, and the filter screen 12 needs to be in contact with the liquid for a long time. Therefore, the material of the filter screen 12 is usually selected as stainless steel. It should be noted that the bottom cover 2 and the filter screen 12 are separate structures formed separately, and different materials can be used for manufacturing, which is not limited in this embodiment.

[0042] In an optional embodiment, the embedding groove 21 is opened in a "convex" shape at the top end of the bottom cover 2, and at least part of the skeleton 11 is embedded in the "convex"-shaped embedding groove 21 so that the skeleton 11 is connected to the bottom cover 2.

[0043] In another optional embodiment, as Figure 2 shown, the embedding groove 21 is opened on the outer peripheral wall of the bottom cover 2, and at least part of the skeleton 11 is embedded in the embedding groove 21 so that the skeleton 11 is connected to the bottom cover 2.

[0044] Specifically, as Figure 2 shown, the skeleton 11 includes a skeleton main body 111 and an embedding part 112 embedded in the embedding groove 21. The embedding part 112 is arranged at one end of the skeleton main body 111 and extends from the inner wall of the skeleton main body 111 towards the center. Through this setting method, the embedding part 112 can be embedded in the embedding groove 21 opened on the outer peripheral wall of the bottom cover 2, so that the skeleton main body 111 is connected to the bottom cover 2 through the embedding part 112.

[0045] Optionally, as Figure 2 shown, the filter screen 12 is fixed to the skeleton main body 111. The filter screen 12 includes a filtering part for passing water and a mating part overlapping with the skeleton main body 111. The mating part is integrated into the inside of the corresponding skeleton main body 111. That is, the mating part is located inside the skeleton main body 111, and the skeleton main body 111 is on both the inner and outer sides of the mating part. The filtering part of the filter screen 12 can ensure that the liquid filtered by the filter screen 12 can flow out of the filter screen assembly 1 smoothly. The mating part of the filter screen 12 is integrated into the inside of the skeleton main body 111, so that the skeleton main body 111 can improve the compressive resistance of the filter screen 12, thereby avoiding the filter screen 12 from being bent and deformed due to excessive pressure during liquid flow, reducing the deformation amount during the use of the filter screen 12, and increasing the service life of the filter screen 12.

[0046] Specifically, the main frame 111 includes multiple first parts and multiple second parts. The multiple first parts are spaced apart circumferentially along the filter screen 12, and the multiple second parts are spaced apart axially along the filter screen 12. The joints of the filter screen 12 are integrated into the interior of the corresponding first and second parts. Through the mutual cooperation of the first and second parts in the circumferential and axial directions, the pressure resistance of the filter screen 12 can be greatly improved, thereby avoiding excessive pressure during liquid flow that could cause the filter screen 12 to bend and deform, reducing the deformation of the filter screen 12 during use, and improving the service life of the filter screen 12.

[0047] Optionally, the filter screen 12 and the bottom cover 2 are connected by an injection-molded skeleton 11. The separately molded bottom cover 2 and filter screen 12 are placed in the injection mold cavity for injection molding, at which time one end of the filter screen 12 is placed on the bottom cover 2; molten plastic material is injected into the injection mold cavity using the injection molding process, and after injection molding and cooling, the skeleton 11 is formed, wherein the joint of the filter screen 12 is integrated into the skeleton body 111, and an embedded part 112 is formed in the groove 21, so that the filter screen 12 and the bottom cover 2 are stably connected into a whole structure. By providing a groove 21 on the bottom cover 2, the injection-molded skeleton 11 includes an insert 112 to form a locking structure similar to a mechanical buckle, so that the filter screen 12 and the bottom cover 2 are stably connected through the skeleton 11 and are not easy to separate, thus ensuring the stability and reliability of the filtration mechanism. The injection-molded skeleton body 111 wraps around the joint of the filter screen 12, which on the one hand enables the filter screen 12 to be stably connected to the skeleton 11 through the skeleton body 111, and on the other hand enhances the strength of the filter screen 12 itself.

[0048] Optionally, such as Figure 3 As shown, a notch 121 is provided on the side of the filter assembly 1. When this filter mechanism is assembled into the valve body 100 of the filter valve, the notch 121 faces the water inlet end of the filter valve and is directly opposite the water inlet end. When the liquid enters the filter valve from the water inlet end, it can flow smoothly into the filter assembly 1 through the notch 121, so that the liquid can fully filter impurities in the filter assembly 1, and then flow to the water outlet end after passing through the filter assembly 1, thereby ensuring the filtration effect and filtration efficiency of the filter mechanism.

[0049] To ensure the structural strength of the filter screen 12, in one optional embodiment, the skeleton body 111 further includes a third part, and the edges of the notch 121 are all the aforementioned intersecting parts and integrated into the interior of the third part. By providing a third part at the edge of the notch 121 to increase the structural strength of the filter screen 12, the pressure resistance of the filter screen 12 is increased, thereby avoiding excessive liquid pressure that could cause the filter screen 12 to bend and deform, reducing the deformation of the filter screen 12 during use, and further improving the service life of the filter screen 12.

[0050] It is understandable that, such as Figure 4As shown, the liquid to be filtered also contains other impurities, such as iron filings, which cannot be filtered by the filter screen 12. Therefore, in some embodiments, the filtration mechanism also includes a magnetic suction element, which is detachably connected to the bottom cover 2 and extends into the interior of the filter screen assembly 1. By providing the magnetic suction element, when the liquid enters the interior of the filter screen assembly 1, the magnetic suction element can effectively adsorb iron filings and other impurities in the liquid; by detachably connecting the magnetic suction element to the bottom cover 2, it is easy to remove and replace the magnetic suction element for cleaning.

[0051] In one optional embodiment, the bottom cover 2 is provided with a mounting hole, and the magnetic component is inserted into the mounting hole. By providing a mounting hole, the connection between the magnetic component and the bottom cover 2 can be simplified. During installation, the magnetic component can be directly inserted into the mounting hole to complete the fixation. When cleaning, the magnetic component can be simply pulled out of the mounting hole. The operation is simple and convenient, and it is easy to clean the magnetic component.

[0052] In another alternative embodiment, such as Figure 1 , Figure 2 As shown, the bottom cover 2 is provided with a threaded section 25, and the magnetic component is threadedly connected to the threaded section 25. By providing the threaded section 25, the connection between the magnetic component and the bottom cover 2 is simplified. During installation, simply screw the magnetic component onto the threaded section 25 to secure it. For cleaning, simply reverse the screw to remove the magnetic component. The operation is simple and convenient, facilitating cleaning of the magnetic component. Optionally, the magnetic component is a magnetic rod. A large magnetic rod with strong magnetic force can effectively attract iron filings and other impurities in the liquid.

[0053] like Figure 4 , Figure 5 As shown, this embodiment also provides a filter valve, which includes a valve body 100 and the aforementioned filter mechanism. The valve body 100 has a communicating flow channel 101 and a filter chamber 102. The filter chamber 102 has an assembly port, and the filter mechanism is detachably connected to the assembly port. The filter screen assembly 1 extends into the filter chamber 102. When liquid enters the filter chamber 102 of this filter valve through the flow channel 101, the filter mechanism can filter the liquid. The filtered liquid flows out through the flow channel 101, ensuring the quality of the liquid output when transported through the pipeline.

[0054] Optionally, such as Figures 4-6 As shown, the filter mechanism is detachably connected to the assembly port via a plug-in assembly. The plug-in assembly includes a plug hole 103, a pin groove 22, and a plug member 200. The plug hole 103 is opened in the assembly port and penetrates the inner wall of the valve body 100. The pin groove 22 is provided on the bottom cover 2, and the plug hole 103 and the pin groove 22 are correspondingly provided. The plug member 200 can be inserted into the plug hole 103, and at least part of the plug member 200 is simultaneously confined in the plug hole 103 and the pin groove 22.

[0055] When installing the filter mechanism, the filter assembly 1 is first inserted directly into the filter chamber 102 through the bottom cover 2. At this time, the bottom cover 2 is located at the assembly port. Then, the connector 200 is inserted into the connector hole 103 and cooperates with the pin groove 22 on the bottom cover 2 in the assembly port to limit the bottom cover 2, thereby fixing the filter assembly 1 in the filter chamber 102. When the filter mechanism needs to be removed for cleaning, simply pull the connector 200 out of the connector hole 103 and the pin groove 22. At this time, the connector 200 is no longer simultaneously limited in the connector hole 103 and the pin groove 22, so the bottom cover 2 can be directly removed from the assembly port. The filter assembly 1 is fixed on the bottom cover 2, and the bottom cover 2 carries the filter assembly 1 out of the filter chamber 102, thus completing the disassembly. This connector makes disassembly and assembly easy and efficient.

[0056] Specifically, the pin groove 22 is an annular groove. The valve body 100, located on both sides of the bottom cover 2, is provided with the aforementioned insertion holes 103. The insertion holes 103 penetrate the valve body 100. The connector 200 first passes through the insertion hole 103, then enters the assembly port, where it mates with the pin groove 22. Finally, it extends from the other end of the insertion hole 103, completing the installation. Because the pin groove 22 is an annular groove, the connector 200 can be inserted into the pin groove 22 for fixation without alignment after passing through the insertion hole 103, saving time and effort.

[0057] In some embodiments, such as Figure 6 As shown, the connector 200 has a U-shaped structure and includes two connector parts 201. The two connector parts 201 are connected by a connecting rod 202. The connecting rod 202 allows the two connector parts 201 to be inserted into the pin slot 22 at the same time. When disassembly is required, the two connector parts 201 can be pulled out at the same time through the connecting rod 202. The operation is simple and convenient.

[0058] Optionally, such as Figure 1 , Figure 2 As shown, a reverse fastener 23 is provided on the outer periphery of the bottom cover 2. The reverse fastener 23 can abut against the plug-in 200 to limit the plug-in 200. In this structure, the reverse fastener 23 can abut against the plug-in 200, thereby preventing the plug-in 200 from falling out of the plug-in hole 103, and thus indirectly ensuring that the bottom cover 2 will not fall out of the valve body 100. In addition, when the plug-in 200 tends to rotate around the axis of the bottom cover 2, the plug-in 200 can abut against the reverse fastener 23 in the opposite direction, thereby preventing the plug-in 200 from rotating and ensuring the stability of the structure.

[0059] In this embodiment, as Figure 2As shown, the anti-locking member 23 includes an extension 231 and an anti-locking part 232. The extension 231 extends away from the bottom cover 2, and the anti-locking part 232 is connected to the extension 231 and bends toward the pin groove 22. After the connector 200 is inserted into the valve body 100, the connection between the extension 231 and the anti-locking part 232 can abut against the bottom of the connecting rod 202, and the anti-locking part 232 can abut against the outer side of the connecting rod 202, thereby ensuring that the connector 200 cannot detach from the insertion hole 103, thus ensuring a good fixing effect on the filter mechanism. In addition, when the connector 200 tends to rotate around the axis of the bottom cover 2, the connecting rod 202 will exert a reverse force on the anti-locking member 23 and abut against the anti-locking member 23, thereby preventing the connector 200 from rotating, ensuring the stability of the filter mechanism, and improving the filtration effect.

[0060] Specifically, such as Figure 5 As shown, the valve body 100 has an assembly groove 104, and the anti-fastening element 23 is confined within the assembly groove 104. To ensure the filtration effect, when this filter mechanism is installed onto the valve body 100, the notch 121 needs to be aligned with the water inlet end of the flow channel 101. By making the anti-fastening element 23 engage with the assembly groove 104 of the valve body 100, the anti-fastening element 23 can provide a clear installation position for the filter mechanism. After the bottom cover 2 is assembled onto the valve body 100, the notch 121 of the filter screen 12 can be aligned with the water inlet end of the flow channel 101, eliminating the need for multiple rotations and adjustments, making installation simpler and faster.

[0061] Understandably, the anti-locking component 23 not only serves as a limit switch but also as a foolproof mechanism.

[0062] Specifically, such as Figures 1-3 As shown, the bottom cover 2 has a sealing groove 24 along its circumference, which is used to install the sealing element 4. After the filter mechanism is installed into the valve body 100, the sealing element 4 can seal the bottom cover 2 and the valve body 100, thereby effectively preventing liquid leakage from the gap between the bottom cover 2 and the valve body 100, thus ensuring good sealing performance. In addition, since the sealing element 4 is installed in the sealing groove 24, the sealing groove 24 can limit the sealing element 4, so that the sealing element 4 will not shake when the bottom cover 2 is disassembled, effectively improving the efficiency and convenience of disassembly and assembly. It should be noted that the sealing element 4 is an O-ring seal. O-ring seals have a simple structure, low price, corrosion resistance, and good sealing effect.

[0063] In this embodiment, as Figures 1-3 As shown, the sealing groove 24 is located on the side of the pin groove 22 near the filter assembly 1 to prevent liquid from flowing out of the insertion hole 103 and further ensure good sealing.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A filtration mechanism comprising a filter assembly (1) and a bottom cover (2) fixed to each other, the filter assembly (1) having a ring-shaped structure, the filter assembly (1) comprising a frame (11) and a filter screen (12) fixed to the frame (11), characterized in that, The bottom cover (2) has a groove (21) in which at least part of the skeleton (11) is embedded and fixed.

2. The filtration mechanism according to claim 1, characterized in that, The groove (21) is formed on the outer peripheral wall of the bottom cover (2).

3. The filtration mechanism according to claim 2, characterized in that, The groove (21) is arranged in a ring shape. The skeleton (11) includes a skeleton body (111) and an embedding part (112) embedded in the groove (21). The embedding part (112) is disposed at one end of the skeleton body (111) and extends from the inner wall of the skeleton body (111) toward the center.

4. The filtration mechanism according to claim 3, characterized in that, The filter screen (12) is fixed to the skeleton body (111). The filter screen (12) includes a water-passing filtration section and an interlocking section that overlaps with the skeleton body (111). The interlocking section is integrated into the interior of the corresponding skeleton body (111).

5. The filtration mechanism according to any one of claims 1-4, characterized in that, The filter screen (12) and the bottom cover (2) are connected by the injection-molded skeleton (11).

6. The filtration mechanism according to claim 1, characterized in that, The filter assembly (1) has a notch (121) on its side.

7. The filtration mechanism according to claim 1, characterized in that, The filtration mechanism also includes a magnetic element (3) which is detachably connected to the bottom cover (2) and extends into the interior of the filter assembly (1).

8. A filter valve, the filter valve comprising a valve body (100), wherein the valve body (100) has a communicating flow channel (101) and a filter chamber (102) therein, and the filter chamber (102) has an assembly port, characterized in that, The filter valve further includes a filter mechanism as described in any one of claims 1-7, the filter mechanism being detachably connected to the mounting port, and the filter assembly (1) extending into the filter chamber (102).

9. The filter valve according to claim 8, characterized in that, The filter mechanism is detachably connected to the assembly port via a plug-in assembly. The plug-in assembly includes a plug hole (103), a pin groove (22), and a plug member (200). The plug hole (103) is opened in the assembly port and penetrates the inner wall of the valve body (100). The pin groove (22) is disposed on the bottom cover (2), and the plug hole (103) and the pin groove (22) are correspondingly disposed. The plug member (200) can be inserted into the plug hole (103), and at least part of the plug member (200) is simultaneously confined in the plug hole (103) and the pin groove (22).

10. The filter valve according to claim 9, characterized in that, The bottom cover (2) is provided with a buckle (23) on its outer periphery. The buckle (23) can abut against the plug (200) so that the buckle (23) limits the plug (200).

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