Filter assembly and filter valve

Abstract

The utility model belongs to the technical field of magnetic filtration, and discloses a filter assembly and a filter valve. The filter assembly comprises a filter screen and a bottom cover, and an annular mounting part is arranged at one end of the filter screen; an annular mounting seat is convexly arranged on the end surface of the bottom cover, and the mounting part is detachably and fixedly sleeved on the annular mounting seat. According to the filtering assembly, the filtering net and the bottom cover are arranged in a split mode, so that the filtering net and the bottom cover can be independently machined, the requirements for the machining technology and machining equipment are reduced, the machining process is simplified, and the production cost is reduced; when cleaning and maintenance are needed, the filter screen can be easily detached from the bottom cover, and the filter screen and the bottom cover are respectively and comprehensively cleaned, so that the filter screen can recover good filtering performance, the service life of the whole filter assembly is prolonged, and the maintenance efficiency is improved; under different working conditions or filtering requirements, filtering assemblies with different precisions may be needed, at the moment, only the filtering net needs to be replaced, the whole filtering assembly does not need to be replaced, and the adaptability and flexibility of the filtering assembly are improved.

Description

Technical Field

[0001] This utility model relates to the field of magnetic filtration technology, and in particular to a filtration component 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 filter screen to remove larger particles from the liquid. During use, the filter screen may become clogged, therefore it needs to be cleaned regularly.

[0003] Existing filter valves typically integrate the filter screen and bottom cover into a single structure to form a filter assembly. The bottom cover is then connected to the valve body of the filter valve to ensure that the filter screen is stably positioned within the valve cavity of the valve body. This type of filter assembly is difficult to manufacture, has high production costs, is troublesome to clean, and is inconvenient to maintain.

[0004] Therefore, there is a need to provide a filter assembly and a filter valve to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a filter component and filter valve that are easy to process, have low production costs, are easy and quick to clean, have high maintenance efficiency, and are highly adaptable.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A filtering component, comprising:

[0008] A filter screen, one end of which is provided with an annular mounting portion;

[0009] The bottom cover has an annular mounting seat protruding from its end face, and the mounting part is detachably fixedly fitted onto the annular mounting seat.

[0010] Preferably, the mounting portion is interference-fitted with the annular mounting base.

[0011] Preferably, the annular mounting base includes a connecting portion, and the outer wall of the connecting portion gradually slopes outward along the axis of the annular mounting base from top to bottom, so that the outer wall of the connecting portion is set at an angle to the axis of the annular mounting base, and the mounting portion and the connecting portion are interference-fitted.

[0012] Preferably, the angle between the outer wall of the annular mounting base and its axis is 5°-10°.

[0013] Preferably, the annular mounting base further includes a guide portion located above the connecting portion, the outer wall of the guide portion being inclined, and the mounting portion being guided by the guide portion to be installed onto the annular mounting base.

[0014] Preferably, the outer wall of the annular mounting base is fitted with an elastic element, the outer diameter of which is larger than the inner diameter of the mounting portion, and the elastic element is sandwiched between the outer wall of the annular mounting base and the inner wall of the mounting portion.

[0015] Preferably, the filter screen is arranged in a circular shape, and a notch is provided on one side of the filter screen.

[0016] Preferably, the end face of the bottom cover is further provided with a plurality of limiting brackets, and the mounting part is provided with a plurality of first limiting grooves. When the filter screen is connected to the bottom cover, the plurality of first limiting grooves and the plurality of limiting brackets are matched for limiting.

[0017] Preferably, the filtering component further includes:

[0018] A magnetic element is detachably fixed to the bottom cover, and the magnetic element extends into the interior of the filter screen.

[0019] A filter valve, characterized in that it comprises:

[0020] A valve body having a valve cavity, the valve cavity having an assembly port, and the valve body having a flow channel along the axial direction, the flow channel communicating with the valve cavity;

[0021] As described above, in the filter assembly, the filter screen extends into the valve chamber from the assembly port, and the bottom cover is detachably and sealingly inserted into the assembly port.

[0022] The beneficial effects of this utility model are:

[0023] This filter assembly includes a filter screen and a bottom cover. One end of the filter screen has an annular mounting portion; the end face of the bottom cover has a protruding annular mounting seat, and the mounting portion is detachably fixed to the annular mounting seat. This filter assembly is designed based on a detachable connection structure between the filter screen and the bottom cover. The annular mounting portion at one end of the filter screen allows the filter screen to perform its filtering function normally, while the mounting portion provides a stable connection with the bottom cover, preventing the filter screen from being clamped and deformed. During assembly, the mounting portion is fitted onto the annular mounting seat of the bottom cover to connect the filter screen and the bottom cover, forming a complete filter assembly, which is then assembled into the valve body. For disassembly and maintenance, simply release the mounting portion from the annular mounting seat, i.e., pull the mounting portion off the annular mounting seat of the bottom cover, to separate the filter screen from the bottom cover.

[0024] Compared with related technologies, the filter assembly of this utility model separates the filter screen and the bottom cover, allowing them to be processed independently. This reduces the requirements for processing technology and equipment, simplifies the processing flow, and lowers production costs. When cleaning and maintenance are required, the filter screen can be easily removed from the bottom cover for thorough cleaning of both the filter screen and the bottom cover, ensuring that the filter screen can regain its good filtration performance, extending the service life of the entire filter assembly, and improving maintenance efficiency. Under different operating conditions or filtration requirements, filter assemblies of different precision may be needed. In this case, only the filter screen needs to be replaced, without replacing the entire filter assembly, thus improving the adaptability and flexibility of the filter assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the filter screen provided by this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the bottom cover provided by this utility model;

[0027] Figure 3 This is a cross-sectional schematic diagram of a filter valve provided in one embodiment of the present invention;

[0028] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0029] Figure 5 This is a cross-sectional schematic diagram of a filter valve provided in another embodiment of this utility model;

[0030] Figure 6 yes Figure 5 A magnified view of a section at point B in the middle;

[0031] Figure 7 This is a schematic diagram of the valve body provided by this utility model;

[0032] Figure 8 This is a structural schematic diagram of the connector provided by this utility model.

[0033] In the picture:

[0034] 1. Filter assembly; 11. Filter screen; 111. Mounting part; 1111. First limiting groove; 112. Notch; 113. Reinforcing rib; 12. Bottom cover; 121. Annular mounting base; 1211. Connecting part; 1212. Guide part; 122. Limiting latch; 123. Reverse fastener; 124. Threaded section; 125. Sealing groove; 13. Elastic element; 14. Magnetic suction element;

[0035] 2. Valve body; 21. Valve cavity; 22. Assembly port; 23. Flow channel; 231. Inlet; 232. Outlet; 24. Second limit groove;

[0036] 31. Plug-in hole; 32. Mounting slot; 33. Plug-in component; 331. Plug-in part; 332. Connecting rod;

[0037] 4. Sealing components;

[0038] 5. Valve core; 51. Valve core cavity;

[0039] 6. Valve stem;

[0040] 7. Handle. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Existing filter valves typically integrate the filter screen and bottom cover into a single structure to form a filter assembly. The bottom cover is then connected to the valve body of the filter valve to ensure that the filter screen is stably positioned within the valve cavity of the valve body. This type of filter assembly is difficult to manufacture, has high production costs, is troublesome to clean, and is inconvenient to maintain.

[0046] To solve the above problems, such as Figure 1 , Figure 2 As shown, this embodiment provides a filter assembly 1, which includes a filter screen 11 and a bottom cover 12. One end of the filter screen 11 is provided with an annular mounting portion 111; the end face of the bottom cover 12 is provided with an annular mounting seat 121, and the mounting portion 111 is detachably fixedly sleeved on the annular mounting seat 121.

[0047] This filter assembly 1 is based on a detachable connection structure between the filter screen 11 and the bottom cover 12. One end of the filter screen 11 is provided with an annular mounting part 111, and the end face of the bottom cover 12 is provided with an annular mounting seat 121. By providing an annular mounting part 111 at one end of the filter screen 11, the filter screen 11 can normally perform the filtering function of the filter assembly 1. The mounting part 111 achieves a stable connection with the bottom cover 12, so that the filter screen 11 is not subject to clamping force and prevents the filter screen 11 from deforming. During assembly, the mounting part 111 is fitted onto the annular mounting seat 121 of the bottom cover 12 to assemble and connect the filter screen 11 and the bottom cover 12 to form a complete filter assembly 1, which is then assembled into the valve body 2. When disassembly and maintenance are required, the fitted state between the mounting part 111 and the annular mounting seat 121 can be released, that is, the mounting part 111 is pulled off the annular mounting seat 121 of the bottom cover 12 to separate the filter screen 11 from the bottom cover 12.

[0048] Compared with related technologies, the filter assembly 1 of this embodiment separates the filter screen 11 and the bottom cover 12, so that the filter screen 11 and the bottom cover 12 can be processed independently, reducing the requirements for processing technology and equipment, simplifying the processing flow, and reducing production costs. When cleaning and maintenance are required, the filter screen 11 can be easily removed from the bottom cover 12, and the filter screen 11 and the bottom cover 12 can be thoroughly cleaned separately to ensure that the filter screen 11 can restore good filtration performance, extend the service life of the entire filter assembly 1, and improve maintenance efficiency. Under different working conditions or filtration requirements, filter assemblies 1 with different precision may be required. In this case, only the filter screen 11 needs to be replaced, without replacing the entire filter assembly 1, which improves the adaptability and flexibility of the filter assembly 1.

[0049] Specifically, the mounting part 111 is interference-fitted with the annular mounting base 121. The interference fit between the mounting part 111 and the annular mounting base 121 allows the filter screen 11 and the bottom cover 12 to be stably connected without the need for additional fasteners, reducing the number of parts and simplifying the assembly process.

[0050] In one alternative embodiment, such as Figure 3 , Figure 4 As shown, the annular mounting base 121 includes a connecting portion 1211. Along the axis of the annular mounting base 121 from top to bottom, the outer wall of the connecting portion 1211 gradually slopes outwards, so that the outer wall of the connecting portion 1211 forms an angle with the axis of the annular mounting base 121. The mounting portion 111 and the connecting portion 1211 are interference-fitted. When the mounting portion 111 is installed downwards onto the connecting portion 1211, as the fit deepens, the assembly between the mounting portion 111 and the connecting portion 1211 becomes increasingly tight, meaning the interference fit between the mounting portion 111 and the connecting portion 1211 becomes increasingly pronounced. This significantly reduces the risk of loosening between the mounting portion 111 and the connecting portion 1211, ensuring a stable connection between the filter screen 11 and the bottom cover 12. Furthermore, it reduces assembly difficulty, preventing situations where the mounting portion 111 cannot be installed downwards onto the connecting portion 1211.

[0051] Optionally, such as Figure 4 As shown, the angle between the outer wall of the annular mounting base 121 and its axis is α, where α is 5°-10°.

[0052] Optionally, such as Figure 4 As shown, the annular mounting base 121 also includes a guide portion 1212, which is located above the connecting portion 1211. The outer wall of the guide portion 1212 is inclined, and the mounting portion 111 is guided by the guide portion 1212 to be installed onto the annular mounting base 121. The inclined outer wall of the guide portion 1212 provides a clear initial guide for the mounting portion 111, ensuring that the mounting portion 111 can be accurately aligned with the annular mounting base 121 at the beginning of assembly, reducing offset and misalignment during the assembly process. As the mounting portion 111 gradually moves downward, the guide portion 1212 continues to play a guiding role, ensuring that the mounting portion 111 can be accurately fitted into the connecting portion 1211, improving the accuracy and consistency of the assembly.

[0053] In another alternative embodiment, such as Figure 5 , Figure 6 As shown, an elastic element 13 is fitted onto the outer wall of the annular mounting base 121. The outer diameter of the elastic element 13 is larger than the inner diameter of the mounting portion 111, and the elastic element 13 is sandwiched between the outer wall of the annular mounting base 121 and the inner wall of the mounting portion 111. During assembly, as the mounting portion 111 is gradually installed downwards onto the annular mounting base 121, the elastic element 13 fitted onto the outer wall of the annular mounting base 121 is located between the outer wall of the annular mounting base 121 and the inner wall of the mounting portion 111. Since the outer diameter of the elastic element 13 is larger than the inner diameter of the mounting portion 111, the elastic element 13 will be compressed and undergo elastic deformation, generating an elastic restoring force opposite to the compression direction. This elastic restoring force ensures that the bottom cover 12 and the filter screen 11 maintain a certain interaction force after assembly, forming a stable connection.

[0054] Specifically, the outer periphery of the annular mounting base 121 is provided with an assembly groove, and the elastic element 13 is fitted into the assembly groove.

[0055] Optionally, the elastic element 13 is an O-ring.

[0056] Specifically, such as Figure 1 As shown, the filter screen 11 is arranged in a circular shape, with a notch 112 on one side. When this filter assembly 1 is assembled into the valve body 2, the notch 112 faces the water inlet 231 of the filter valve and is directly opposite the water inlet 231. When the liquid enters the valve chamber 21 from the water inlet 231, it can flow smoothly into the interior of the filter screen 11 through the notch 112, so that the liquid can fully filter impurities inside the filter screen 11, and then flow to the water outlet 232 after passing through the filter screen 11. The filter screen 11 can further filter large particulate impurities in the liquid, thereby ensuring the filtration effect and filtration efficiency of the filter valve.

[0057] Furthermore, such as Figure 1 , Figure 2 As shown, the end face of the bottom cover 12 is also provided with several limiting brackets 122, and the mounting part 111 is provided with several first limiting grooves 1121. When the filter screen 11 is connected to the bottom cover 12, the several first limiting grooves 1121 and the several limiting brackets 122 are matched in a limiting manner. During the operation of the filter assembly 1, the fluid will exert a certain force on the filter screen 11, causing the filter screen 11 to tend to rotate relative to the bottom cover 12. The limiting cooperation between the limiting brackets 122 and the first limiting grooves 1121 can effectively prevent this relative rotation, so that the filter screen 11 is always kept in the correct installation position and direction, that is, the notch 112 is always aligned with the water inlet 231 of the valve body 2, ensuring that the filtration area and filtration effect of the filter screen 11 are not affected.

[0058] Specifically, such as Figure 1 As shown, the outer periphery of the filter screen 11 is provided with several reinforcing ribs 113. By providing reinforcing ribs 113, the structural strength of the filter screen 11 can be effectively improved, thereby preventing the filter screen 11 from losing its pressure-bearing capacity after the notch 112 is provided, and thus ensuring that the filter screen 11 will not deform even after long-term use, thereby improving the service life of the filter screen 11. The reinforcing ribs 113 can be injection-molded ribs or stainless steel structural ribs.

[0059] It is understandable that other impurities may exist in the liquid to be filtered, such as iron filings, which cannot be filtered by the filter screen 11. Therefore, in this embodiment, the filter assembly 1 also includes a magnetic suction member 14, which is disposed on the bottom cover 12 and extends into the interior of the filter screen 11. By providing the magnetic suction member 14, when the liquid enters the interior of the filter screen 11, the magnetic suction member 14 can effectively adsorb iron filings in the liquid to be filtered; and since the magnetic suction member 14 is disposed on the bottom cover 12, it can be disassembled and cleaned together with the filter screen 11 and the bottom cover 12.

[0060] Specifically, such as Figure 2 As shown, the end face of the bottom cover 12 has a protruding threaded section 124, and the magnetic suction member 14 is threadedly connected to the threaded section 124. By setting the threaded section 124, the connection between the magnetic suction member 14 and the bottom cover 12 can be simplified. During installation, the magnetic suction member 14 can be fixed by simply screwing it onto the threaded section 124. During cleaning, the magnetic suction member 14 can be removed by simply screwing it in the opposite direction. The operation is simple and convenient, and it is easy to clean the magnetic suction member 14.

[0061] In this embodiment, the magnetic attractor 14 is a magnetic rod, which is relatively large and has a strong magnetic force, and can fully attract iron filings in the liquid to be filtered.

[0062] This embodiment also provides a filter valve, which is applied in a piping system to filter impurities such as solid particles and iron filings. In this embodiment, the filter valve is installed in the water system of a heat pump unit, serving to clean the water and protect the terminal unit. Of course, in other embodiments, the filter valve can also be installed in the water supply and drainage system or other systems.

[0063] Specifically, such as Figures 3-8 As shown, this filter valve includes the valve body 2 and the filter assembly 1 described above. The valve body 2 has a valve cavity 21 with an assembly port 22. The valve body 2 has an axially oriented flow channel 23 that communicates with the valve cavity 21. A filter screen 11 extends into the valve cavity 21 through the assembly port 22, and a bottom cover 12 is detachably and sealingly inserted into the assembly port 22. The liquid to be filtered enters the valve cavity 21 through the flow channel 23, and the filter screen 11 is installed inside the valve cavity 21. The filter screen 11 can filter large particles in the liquid to be filtered, thereby improving the purity of the liquid after passing through this filter valve and ensuring good performance.

[0064] It is understood that the valve body 2 is provided with the aforementioned inlet 231 and outlet 232, and the flow channel 23 is used to connect the inlet 231 and outlet 232. The liquid to be filtered enters this filter valve through the inlet 231 and flows out of the filter valve through the outlet 232 after filtration.

[0065] Specifically, such as Figures 1-8As shown, this filter valve also includes a limiting component, which includes a plug hole 31, a mounting groove 32, and a plug member 33. The plug hole 31 is opened in the valve body 2 and penetrates the inner wall of the assembly port 22. The mounting groove 32 is provided on the bottom cover 12, and the plug hole 31 and the mounting groove 32 are correspondingly provided. The plug member 33 can be inserted into the plug hole 31, and at least part of the plug member 33 is simultaneously limited in the plug hole 31 and the mounting groove 32.

[0066] When installing the filter assembly 1, the filter screen 11 is first inserted directly into the valve cavity 21 through the bottom cover 12. At this time, the bottom cover 12 is located at the assembly port 22. Then, the connector 33 is inserted into the connector hole 31 and cooperates with the mounting groove 32 on the bottom cover 12 within the assembly port 22 to limit the bottom cover 12, thereby fixing the filter screen 11 in the valve cavity 21. When the filter assembly 1 needs to be removed for cleaning, the connector 33 is simply pulled out from the connector hole 31 and the mounting groove 32. At this time, the connector 33 is no longer simultaneously limited within the connector hole 31 and the mounting groove 32, so the bottom cover 12 can be directly removed from the assembly port 22. The filter screen 11 is fixed on the bottom cover 12, and the bottom cover 12 carries the filter screen 11 out of the valve cavity 21, thus completing the disassembly. This limiting component makes disassembly and assembly difficult and efficient.

[0067] In this embodiment, as Figure 2 As shown, the mounting groove 32 is annularly formed on the outer periphery of the bottom cover 12. The connector 33 includes two connector parts 331 and a connecting rod 332. The two connector parts 331 are set at an included angle at both ends of the connecting rod 332, and the two connector parts 331 can be inserted into the corresponding connector holes 31 respectively. Since the mounting groove 32 is an annular groove, no matter how the bottom cover 12 is rotated during installation, the connector 33 can directly enter the mounting groove 32 after being inserted into the connector holes 31, thereby improving installation efficiency and convenience. Secondly, since the connector 33 is U-shaped, during installation, by holding the connecting rod 332, the connector parts 331 at both ends of the connecting rod 332 can be aligned with the two connector holes 31 respectively, and the two connector parts 331 can be inserted and fixed simultaneously. The operation is simple and convenient, improving installation efficiency. When the filter assembly 1 needs to be removed for cleaning, simply pull the connecting rod 332 away from the valve body 2 to pull out both plugs 331 at the same time. Then, pull the bottom cover 12 outward from the valve cavity 21 to complete the disassembly, which greatly improves convenience.

[0068] Specifically, such as Figure 2As shown, a reverse fastener 123 is also provided on the outer periphery of the bottom cover 12. The reverse fastener 123 can abut against the connecting rod 332 to prevent the bottom cover 12 from falling off the assembly port 22 and from rotating around the axis of the bottom cover 12. The reverse fastener 123 can abut against the connecting rod 332 of the plug-in 33, thereby preventing the plug-in 33 from falling out of the plug-in hole 31, thus indirectly ensuring that the bottom cover 12 will not fall off the valve body 2; in addition, when the bottom cover 12 tends to rotate around its axis, the plug-in 33 can abut against the reverse fastener 123 in the opposite direction, thereby preventing the bottom cover 12 from rotating and ensuring the stability of the filter valve.

[0069] In this embodiment, as Figure 7 As shown, the valve body 2 has a second limiting groove 24. When the bottom cover 12 is inserted into the assembly port 22, the anti-fastening piece 123 is limited within the second limiting groove 24. During assembly, the second limiting groove 24 provides a clear installation position for the bottom cover 12, so that when the bottom cover 12 is assembled into the valve body 2, the notch 112 of the filter screen 11 can be aligned with the water inlet 231, eliminating the need for multiple adjustments and making installation simpler and faster.

[0070] Specifically, such as Figure 2 , Figure 3 As shown, to ensure a good sealing effect, the bottom cover 12 is provided with a sealing groove 125 along the circumference, and the sealing groove 125 is located on the side of the mounting groove 32 near the filter screen 11. A sealing element 4 is provided in the sealing groove 125. By providing the sealing element 4, the liquid to be filtered can be prevented from flowing out from the gap between the bottom cover 12 and the assembly port 22, ensuring good airtightness. In addition, since the bottom cover 12 is provided with a sealing groove 125 along the circumference, the sealing element 4 can be directly installed in the sealing groove 125, thereby ensuring that the sealing element 4 will not move during installation and disassembly, thus ensuring good disassembly and assembly effect. The sealing groove 125 is located on the side of the mounting groove 32 near the filter screen 11, which can also prevent the liquid to be filtered in the valve cavity 21 from flowing out from the insertion hole 31, thus again ensuring good sealing performance. It should be noted that in this embodiment, the sealing element 4 is an O-ring. O-rings have a simple structure, low price, and are easy to install, which helps to reduce manufacturing costs and operational difficulty.

[0071] In this embodiment, as Figure 3As shown, the filter valve also includes a valve core 5, which is rotatably disposed within the valve cavity 21. The valve core 5 has a through-hole in the valve core cavity 51, and its bottom has an opening communicating with the valve core cavity 51. The filter screen 11 can extend into the valve core cavity 51 through this opening. When the filter valve is open, the valve core 5 rotates to the valve core cavity 51 to connect the inlet 231 and the outlet 232. At this time, the liquid to be filtered can enter the flow channel 23 from the inlet 231, then enter the valve core cavity 51 and be filtered by the filter screen assembly 1, and finally flow out from the outlet 232. When the filter valve is closed, the valve core 5 rotates to the position where the valve core cavity 51 is directly opposite the inner wall of the valve body 2. At this time, the inlet 231 and the outlet 232 are separated.

[0072] Specifically, such as Figure 3 As shown, to facilitate rotating the valve core 5 to switch the on / off state of the filter valve, this filter valve also includes a valve stem 6. One end of the valve stem 6 is connected to the top of the valve core 5, and the other end of the valve stem 6 extends out of the valve body 2 and is connected to a handle 7. The handle 7 can drive the valve stem 6 to rotate, which in turn can indirectly drive the valve core 5 to rotate, thereby achieving rapid switching of the filter valve's on / off state, saving time and effort, and making it easy to use. In addition, the aforementioned sealing element 4 is also provided between the valve stem 6 and the valve body 2, thereby ensuring a sealing effect on the valve cavity 21. The structure of the sealing element 4 has been explained above and will not be repeated here.

[0073] 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 filter assembly, characterized in that, include: A filter screen (11), one end of which is provided with an annular mounting portion (111); The bottom cover (12) has an annular mounting seat (121) protruding from its end face, and the mounting part (111) is detachably fixedly sleeved on the annular mounting seat (121).

2. The filter assembly according to claim 1, characterized in that, The mounting part (111) is interference-fitted with the annular mounting base (121).

3. The filter assembly according to claim 2, characterized in that, The annular mounting base (121) includes a connecting portion (1211). Along the axis of the annular mounting base (121) from top to bottom, the outer wall of the connecting portion (1211) is inclined outward so that the outer wall of the connecting portion (1211) is set at an angle to the axis of the annular mounting base (121). The mounting portion (111) and the connecting portion (1211) are interference fit.

4. The filter assembly according to claim 3, characterized in that, The angle between the outer wall of the annular mounting base (121) and its axis is 5°-10°.

5. The filter assembly according to claim 3, characterized in that, The annular mounting base (121) further includes a guide portion (1212), which is located above the connecting portion (1211). The outer wall of the guide portion (1212) is inclined, and the mounting portion (111) is guided and installed to the annular mounting base (121) by the guide portion (1212).

6. The filter assembly according to claim 1, characterized in that, An elastic element (13) is sleeved on the outer wall of the annular mounting base (121). The outer diameter of the elastic element (13) is larger than the inner diameter of the mounting part (111). The elastic element (13) is sandwiched between the outer wall of the annular mounting base (121) and the inner wall of the mounting part (111).

7. The filter assembly according to claim 1, characterized in that, The filter screen (11) is arranged in a circular shape, and a notch (112) is provided on one side of the filter screen (11).

8. The filter assembly according to claim 1, characterized in that, The end face of the bottom cover (12) is also provided with a plurality of limiting brackets (122), and the mounting part (111) is provided with a plurality of first limiting grooves (1111). When the filter screen (11) is connected to the bottom cover (12), the plurality of first limiting grooves (1111) and the plurality of limiting brackets (122) are matched in a limiting manner.

9. The filter assembly according to claim 1, characterized in that, The filtering component also includes: A magnetic element (14) is detachably fixed to the bottom cover (12), and the magnetic element (14) extends into the interior of the filter screen (11).

10. A filter valve, characterized in that, include: The valve body (2) has a valve cavity (21) inside, the valve cavity (21) has an assembly port (22), and the valve body (2) has a flow channel (23) along the axial direction, the flow channel (23) communicating with the valve cavity (21); In any one of claims 1-9, the filter screen (11) extends into the valve chamber (21) from the assembly port (22), and the bottom cover (12) is detachably and sealingly inserted into the assembly port (22).

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