Detachable filter structure and production method therefor

Abstract

A detachable filter structure, comprising a first portion (1) and a second portion (2). The first portion (1) comprises a plurality of first sub-structures (102), and a first connection structure (101) connecting the plurality of first sub-structures (102) into a whole. The second portion (2) comprises a plurality of second sub-structures (202), and a second connection structure (201) connecting the plurality of second sub-structures (202) into a whole. The first portion (1) and the second portion (2) can be assembled to form a filter plate (3), the first sub-structures (102) and the second sub-structures (202) being alternately arranged in the filter plate (3), and a filter gap (301) being formed between a first sub-structure (102) and a second sub-structure (202) which are adjacent. The production method comprises cutting an integral plate to form the first portion (1) and the second portion (2). The separation of the first portion (1) and the second portion (2) can open the filter gaps (301), so as to expose clogging matter therein.

Description

A separation type filter structure and production method thereof Technical Field

[0001] The present invention relates to the field of filtration, and more particularly to a separate filtration structure and a production method thereof. Background Art

[0002] Whether in daily life or in industrial filtration, filter structures often encounter the problem of filter pores being clogged and difficult to clean. For example:

[0003] In tea filters, tea leaves or tea residue can easily get stuck in the filter holes, causing blockages. For example, in kitchen sink filters, food residue can easily accumulate in the filter holes, causing blockages. In bathroom floor drains, hair can get stuck in the filter holes, causing blockages. In water filters, impurities such as scale and sand can accumulate in the filter holes, causing blockages. In air purifiers, dust, pollen, and pet hair can easily accumulate in the filter holes, causing blockages. In coffee machine filters, coffee grounds can accumulate in the filter holes, causing blockages.

[0004] The reason why the blockage is stuck in the filter hole and difficult to clean is that:

[0005] 1. The filter pores are small, and the blockage is located inside the pores, making it difficult to find a focal point to remove the blockage. In practice, some people use methods such as acupuncture to clear the blockage in the filter pores. However, the filter pores of different specifications vary in size, making it difficult to find a universal needle size. Furthermore, it is too laborious to use acupuncture to clear the blockage in each filter pore.

[0006] 2. The filter pores are small, and the inner walls of the pores exert pressure on the blockage, resulting in greater friction between the blockage and the pore walls, making it difficult to flush the blockage out. In practice, some people use high-pressure flushing to clean the filter, but due to the small pore area, the pressure of the small amount of water entering the narrow pores may not be sufficient to flush out the blockage. Furthermore, high-pressure flushing is ineffective for fibrous strips stuck in the pores. Furthermore, high-pressure flushing is not convenient in practical applications.

[0007] The above issues are not limited to filtration scenarios with pores; they can also occur in scenarios with slits. For example, the glass filter liner in some tea-water separator cups does not have multiple pores for ease of processing, but instead uses multiple slits cut into the bottom of the glass for filtering. During cleaning, it is easy to find that tea leaves often get stuck in these slits and are difficult to remove.

[0008] If a filter structure could be envisioned where the filtration gaps (whether pores or slits) could be opened, friction would be greatly reduced because clogged materials would no longer be squeezed by the filtration gaps. This would also allow the clogged materials to escape through the filtration gaps, making cleaning much easier. Furthermore, if such a filter structure could be easily spliced, its application could be easily extended to multiple fields. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a separate filtering structure and a production method thereof, so as to solve the problems mentioned in the background technology.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A separate filtering structure comprises a first part and a second part;

[0012] The first part includes a plurality of first substructures and a first connecting structure connecting the plurality of first substructures into one;

[0013] The second part includes a plurality of second substructures and a second connecting structure connecting the plurality of second substructures into one;

[0014] The first part and the second part can be spliced ​​to form a filter plate. In the filter plate, the first substructures and the second substructures are arranged alternately, and filter gaps are formed between adjacent first substructures and second substructures.

[0015] In some embodiments, the filtering slits are strip-shaped slits.

[0016] In a preferred embodiment, the filter gap is a plurality of filter holes, and the filter holes are surrounded by a first gap and a second gap. The first gap is opened at the edge of the first substructure, and the second gap is opened at the edge of the second substructure.

[0017] In a preferred embodiment, the connection structure and the substructure are connected in the following manner:

[0018] The first connecting structure is connected to the outer ends of the plurality of first substructures;

[0019] The second connecting structure is connected to the outer ends of the plurality of second substructures;

[0020] During splicing, the inner end of the first substructure and the inner end of the second substructure are embedded in each other;

[0021] The thickness of the first substructure, the thickness of the second substructure, the thickness of the first connecting structure and the thickness of the second connecting structure are all the same, so that the surfaces on both sides of the spliced ​​filter plate are flat surfaces without protrusions.

[0022] Furthermore, in most application scenarios, the filter plate is a circular plate; on this basis, the first connecting structure and the second connecting structure can both be set as semicircular rings. After splicing, the two semicircular rings form a complete circular ring, and the first substructure and the second substructure are located inside the complete circular ring.

[0023] In a further embodiment, the filter gap may also exist in any one or more of the following:

[0024] 1) Between the first substructure and the second connecting structure;

[0025] 2) between the second substructure and the first connecting structure;

[0026] 3) Between the first connecting structure and the second connecting structure.

[0027] The above embodiment describes a preferred connection method of the connection structure and the substructure. In another optional embodiment, the connection method of the connection structure and the substructure may also be as follows:

[0028] The first connecting structure is connected to the outer side surfaces of the plurality of first substructures;

[0029] The second connecting structure is connected to the outer side surfaces of the plurality of second substructures;

[0030] wherein the thickness of the first substructure is equal to the thickness of the second substructure;

[0031] When spliced, the inner side surface of the first substructure and the inner side surface of the second substructure are embedded in each other;

[0032] After splicing, the first substructure and the second substructure overlap in thickness.

[0033] In addition, the connection method of the connection structure and the substructure can also be as follows:

[0034] The first connecting structure is connected to a portion of the thickness of the plurality of first substructures;

[0035] The second connecting structure is connected to a partial thickness position of the plurality of second substructures;

[0036] The thickness of the first substructure is equal to the thickness of the second substructure; the sum of the thicknesses of the first connecting structure and the second connecting structure is equal to the thickness of the first substructure;

[0037] After splicing, the first substructure and the second substructure overlap in thickness, and the first connecting structure and the second connecting structure overlap in thickness, so that the surfaces on both sides of the spliced ​​filter plate are flat without protrusions.

[0038] In some cases, to facilitate splicing or reduce the risk of one part being lost, the first and second parts can be connected, as long as they can move relative to each other to separate the filter gap. In corresponding embodiments, the first and second parts can be rotatably or slidably connected. Rotational or slidable connections can be achieved by hingedly connecting the two parts or providing guide rails.

[0039] When performing specific filtration applications, it is often necessary to add a filter cartridge. Therefore, in a further, simplest application embodiment, the separate filtration structure also includes a filter cartridge, a filter cartridge base plate is provided at the bottom of the filter cartridge, and a filter cartridge bottom opening is opened in the middle of the filter cartridge base plate; the filter plate is detachably mounted on the filter cartridge base plate. In this embodiment, if the filter cartridge is inverted, the filter plate may fall off. Therefore, in another better embodiment:

[0040] The separate filtration structure also includes a filter cartridge and a bottom cover detachably connected to the bottom of the filter cartridge; the filter cartridge bottom is provided with a filter cartridge bottom opening, and the bottom cover is provided with a bottom cover bottom opening; the filter plate is detachably located between the filter cartridge bottom structure and the bottom cover of the filter cartridge.

[0041] The bottom cover includes a bottom cover base plate for supporting the filter plate, and a bottom cover side plate connected to the edge of the bottom cover base plate. The bottom opening of the bottom cover is opened in the middle of the bottom cover base plate. A filter plate limiting ring is provided at the inner angle between the bottom cover side plate and the bottom cover base plate.

[0042] The filter cartridge includes a cartridge wall and a cartridge thread located on the outside of the bottom of the cartridge wall. The inner wall of the bottom cover side plate is provided with a bottom cover thread. The filter cartridge and the bottom cover are detachably connected through the threaded connection of the cartridge thread and the bottom cover thread.

[0043] Preferably, when the bottom cover is screwed onto the bottom of the filter cartridge, the outer edges of the structures of the first part and the second part are pressed by the bottom structure of the filter cartridge, thereby preventing the outer edges of the structures from warping.

[0044] The embodiment using a detachable bottom cover also solves the following common problems in filtering scenarios:

[0045] The traditional filter cartridge cleaning process is cumbersome. Specifically, if water is flushed directly from the top opening toward the interior of the cartridge, the filter plates block the flow of residue, preventing it from being flushed out. Furthermore, the water that is flushed in quickly escapes from the filter pores, preventing the accumulated water from being used to remove the residue. If the cartridge is inverted and water is flushed from the outside of the bottom filter plates toward the interior, only the small amount of water that passes through the pores is sufficient to flush out the residue, and this small amount of water, at a low flow rate, is insufficient to effectively flush out the residue.

[0046] After adopting the filter cartridge structure with a detachable bottom cover in the present invention, both sides of the filter cartridge are connected to the outside world by removing the bottom cover, so water can be flushed toward the internal residue from one side and the residue can be flushed out from the other side, which is very convenient.

[0047] The above-mentioned separate filter structure of the present invention can be applied to tea filters, and may be the best application scenario.

[0048] The present invention also discloses a method for producing the above-mentioned separate filtering structure, comprising the following steps: cutting a first part and a second part from an integral plate.

[0049] As for the filter gap, it can be obtained through a variety of different means, such as any of the following methods:

[0050] Method 1: Directly use the cutting gap as the filtering gap.

[0051] Method 2: Before cutting, drill holes to obtain filter gaps.

[0052] Method 3: The filter gap is processed simultaneously during the cutting process. For example, when the position where the filter hole needs to be opened is reached during the cutting process, the cutting diameter is increased. Of course, the filter hole obtained in this case is also the cutting gap mentioned in Method 1.

[0053] Method 4: When the first part and the second part are not yet completely separated after cutting, a filtering gap is formed, and further cutting is performed to completely separate the first part and the second part.

[0054] Method 5: After cutting is completed, filter gaps are formed through further processing.

[0055] The above-mentioned processing method can be drilling, or cutting and eliminating a part of the area, trimming, etc. The cutting or processing tool can be a laser, a water jet, an electric spark, etc.

[0056] Regardless of the method used to obtain the filter gap, separating the first and second parts by cutting can effectively ensure the splicing accuracy of the two. This is a solution for plates with lower production precision, such as ceramics.

[0057] The present invention also discloses a method for producing the bottom cover, comprising the following steps:

[0058] Use a mold to press the bottom cover side plate inward to form the bottom cover thread; this is equivalent to rolling in machining;

[0059] The bottom cover bottom plate is pressed downward by a mold to form a groove, and the edge of the groove is used as a filter plate limiting ring; this is equivalent to stamping in mechanical processing.

[0060] This production method is mainly aimed at the processing of metal parts. In addition, the steps of the bottom cover thread and groove processing do not specify a time sequence and can be performed in any order.

[0061] The present invention has advantages over existing technologies in that, by joining the first and second parts, a complete filter plate is formed, providing the functionality of a conventional filter structure. Separating the first and second parts allows for the separation of the filter pores or slits, thereby exposing any obstructions in the pores or slits while also reducing friction between the obstructions and the pores or slits, making them significantly easier to clean. The present invention utilizes a connecting structure that allows the first and second parts to form an integrated structure, enabling precise and convenient assembly. Furthermore, for filter plate installation, the preferred embodiment of the present invention utilizes a removable assembly design for the filter cartridge, bottom cover, and filter plate, ensuring stable installation. To clean residue from the filter cartridge, the bottom cover is simply removed from the cartridge, and the filter plate is then removed from the bottom cover and separated into two parts. This provides ample space for any obstructions to be easily flushed away. The present production method utilizes a cutting and separation method from a single, integral plate, ensuring precise assembly of the two cut parts and addressing the limited machining precision of materials such as ceramics. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] FIG1 is a schematic diagram of filter plate separation in a first embodiment of the present invention;

[0063] FIG2 is a schematic diagram of the merging of filter plates in the first embodiment of the present invention;

[0064] FIG3 is a schematic diagram of the separation of the filter plates in the second embodiment of the present invention;

[0065] FIG4 is a schematic diagram of the merging of filter plates in a second embodiment of the present invention;

[0066] FIG5 is a schematic diagram of filter plate separation according to a third embodiment of the present invention;

[0067] FIG6 is a schematic diagram of a filter plate combination according to a third embodiment of the present invention;

[0068] FIG7 is a schematic diagram of the separation of the filter plate in the fourth embodiment of the present invention;

[0069] FIG8 is a schematic diagram of filter plates combined in a fourth embodiment of the present invention;

[0070] 9 is a schematic diagram of the fifth embodiment of the present invention before the filter plate is installed on the filter cartridge;

[0071] 10 is a schematic diagram of the filter plate installed in the filter cartridge in the fifth embodiment of the present invention;

[0072] 11 is a schematic diagram of the filter plate before being installed on the filter cartridge in the sixth embodiment of the present invention;

[0073] FIG12 is a top perspective view of a filter plate mounted on a bottom cover in a sixth embodiment of the present invention;

[0074] FIG13 is a bottom perspective view of the filter plate installed on the bottom cover in the sixth embodiment of the present invention;

[0075] 14 is a bottom perspective view of the filter plate installed in the filter cartridge in the sixth embodiment of the present invention;

[0076] FIG15 is a bottom view of a portion of a filter cartridge and a filter plate according to a sixth embodiment of the present invention;

[0077] FIG16 is a schematic diagram of the separation of the filter plate in the seventh embodiment of the present invention;

[0078] FIG17 is a schematic diagram of a seventh embodiment of the present invention, wherein the filter plates are combined;

[0079] FIG18 is a schematic diagram of the separation of the filter plate in the eighth embodiment of the present invention;

[0080] FIG19 is a schematic diagram of the merging of filter plates in the eighth embodiment of the present invention;

[0081] FIG20 is a schematic diagram of the separation of the filter plate in the ninth embodiment of the present invention;

[0082] FIG21 is a schematic diagram of the merging of filter plates in the ninth embodiment of the present invention;

[0083] FIG22 is a schematic diagram of the separation of the filter plate in the tenth embodiment of the present invention;

[0084] FIG23 is a schematic diagram of the merging of filter plates in the tenth embodiment of the present invention;

[0085] FIG24 is a schematic diagram of the application of the filter plate in the tenth embodiment of the present invention.

[0086] 1. First part, 101. First connecting structure, 102. First substructure, 103. First notch;

[0087] 2. Second part, 201. Second connecting structure, 202. Second substructure, 203. Second notch;

[0088] 12. The outer edge of the structure;

[0089] 3. Filter plate, 301, filter gap;

[0090] 4. Bottom cover, 401. Bottom cover bottom plate, 402. Bottom cover side plate, 403. Bottom cover thread, 404. Bottom cover bottom opening, 405. Filter plate limiting ring;

[0091] 5. Filter cartridge, 501. Cartridge wall, 502. Filter cartridge thread, 503. Filter cartridge bottom opening, 504. Filter cartridge bottom plate, 505. Filter cartridge bottom structure. DETAILED DESCRIPTION

[0092] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0093] As shown in FIG1 and FIG2 , a separate filtering structure of the present invention includes a first part 1 and a second part 2;

[0094] The first part 1 includes a first connecting structure 101 and a plurality of first substructures 102, wherein the first connecting structure 101 connects the plurality of first substructures 102 into one;

[0095] The second part 2 includes a second connecting structure 201 and a plurality of second substructures 202, wherein the second connecting structure 201 connects the plurality of second substructures 202 into one;

[0096] The first part 1 and the second part 2 can be spliced ​​to form a filter plate 3 . In the filter plate 3 , the first substructures 102 and the second substructures 202 are alternately arranged, and filter gaps 301 are formed between adjacent first substructures 102 and second substructures 202 .

[0097] The term "connected as one" here includes two situations:

[0098] One situation is that when the first part 1 (or the second part 2) is processed and formed, the first connecting structure 101 and the multiple first substructures 102 (or the second connecting structure 201 and the multiple second substructures 202) are themselves formed as one piece; the concept of the word "connection" is only a structural expression, not an actual operation.

[0099] Another case is to connect the first connection structure 101 and the plurality of first substructures 102 (or the second connection structure 201 and the plurality of second substructures 202 ) into one piece by welding or bonding.

[0100] Among them, the first case is preferred.

[0101] Since the first part 1 is a whole rather than multiple discrete parts, and the second part 2 is a whole rather than multiple discrete parts, splicing the two becomes very simple, and forming the filtering gap 301 becomes more precise.

[0102] The filter slit 301 can have various forms. In the embodiments shown in Figures 1 and 2 , the filter slit 301 is a narrow strip. However, in other embodiments, the filter slit 301 can be a filter hole. For example, in the embodiments shown in Figures 3 and 4 , the filter slit 301 is a filter hole formed by a first notch 103 and a second notch 203 . The first notch 103 is located at the edge of the first substructure 102 , and the second notch 203 is located at the edge of the second substructure 202 .

[0103] The filter holes shown in Figures 3 and 4 are circular filter holes. In other embodiments, the filter slits 301 can also be square filter holes, etc. In other embodiments, the filter slits 301 can also include both strip-shaped slits and filter holes. This is easy to imagine, for example, by drilling holes in the filter slits 301 shown in Figure 2.

[0104] In other embodiments, the filter gap 301 may also exist in any one or more of the following:

[0105] 1) Between the first substructure 102 and the second connecting structure 201;

[0106] 2) between the second substructure 202 and the first connecting structure 101;

[0107] 3) Between the first connection structure 101 and the second connection structure 201 .

[0108] This is because there is a splicing line between these structures. After setting the filter slits 301 at the splicing line, the filter slits 301 can be separated by structural splitting, thereby achieving the purpose of the present invention. For example, in the embodiments shown in Figures 18 and 19, the filter holes are distributed in the above-mentioned situations 1) and 2).

[0109] There are many ways to connect the connection structure and the substructure. The embodiment shown in Figures 1 to 4 is one of the connection methods. This connection method can be summarized as follows:

[0110] The first connecting structure 101 is connected to the outer ends of the plurality of first substructures 102;

[0111] The second connection structure 201 is connected to the outer ends of the plurality of second substructures 202;

[0112] When spliced, the inner end of the first substructure 102 and the inner end of the second substructure 202 are embedded in each other;

[0113] In FIG1 and FIG3 , OUTSIDE is used to represent the outer end side, and INSIDE is used to represent the inner end side.

[0114] Preferably, as shown in Figures 1 to 4, the thickness of the first substructure 102, the thickness of the second substructure 202, the thickness of the first connecting structure 101, and the thickness of the second connecting structure 201 are all the same; after splicing, the surfaces on both sides of the filter plate 3 are flat surfaces without protrusions (of course, in other embodiments, they can also be curved surfaces, assuming that the flat structure can be bent to obtain a curved surface).

[0115] The above is the first connection method, which is the most preferred connection method. The planar form is also the most preferred form, with a simple structure and easy splicing.

[0116] The filter plate 3 shown in Figures 1 to 4 is a circular plate. It can be seen that the first connecting structure 101 and the second connecting structure 201 are both semicircular rings. After splicing, the two semicircular rings form a complete ring, and the first substructure 102 and the second substructure 202 are located inside the complete ring. Figures 18 and 19 show an example of a square plate using the first connection method.

[0117] The second connection method is shown in Figures 5 and 6:

[0118] The first connecting structure 101 is connected to the outer side surfaces of the plurality of first substructures 102;

[0119] The second connecting structure 201 is connected to the outer side surfaces of the plurality of second substructures 202;

[0120] Preferably, the thickness of the first substructure 102 is equal to the thickness of the second substructure 202;

[0121] When spliced, the inner side surface of the first substructure 102 and the inner side surface of the second substructure 202 are embedded in each other;

[0122] After splicing, the first substructure 102 and the second substructure 202 overlap in thickness.

[0123] In FIG. 5 , OUTSIDE represents the outer side, and INSIDE represents the inner side.

[0124] The third connection method is shown in Figures 7 and 8:

[0125] The first connecting structure 101 is connected to a portion of the thickness of the plurality of first substructures 102;

[0126] The second connecting structure 201 is connected to a portion of the thickness of the plurality of second substructures 202;

[0127] After splicing, the first substructure 102 and the second substructure 202 partially or completely overlap (preferably completely overlap) in thickness, and the first connection structure 101 and the second connection structure 201 are superimposed in thickness.

[0128] Preferably, the thickness of the first substructure 102 is equal to the thickness of the second substructure 202; the sum of the thicknesses of the first connecting structure 101 and the second connecting structure 201 is equal to the thickness of the first substructure 102; after splicing, the two side surfaces of the filter plate 3 are flat surfaces without protrusions (same as above, they can also be curved surfaces in other embodiments).

[0129] The filter plate 3 can be installed in various filter structures, such as a filter cartridge structure.

[0130] Figures 9 and 10 show the simplest installation method.

[0131] The filter cartridge 5 comprises a cartridge wall 501 and a bottom opening 503 at the bottom, which is used to allow water to pass through. The opening 503 is located in the middle of the cartridge base plate 504. The filter plates 3 are assembled and placed on the base plate 504. In another embodiment, one portion of the filter plate 3 (e.g., the first portion 1) can be fixed to the base plate 504, while the other portion (e.g., the second portion 2) can be removably attached to a corresponding position on the cartridge base plate 504.

[0132] However, regardless of the above embodiments, if the filter cartridge 5 is inverted, the filter plate 3 is likely to fall off. It is possible to consider adding some snap-fit ​​structures, magnetic structures, etc. to fix the filter plate 3. However, since the filter plate 3 is usually relatively thin, and is limited by factors such as structural size or material, these fixing methods may have limitations in some cases. Therefore, the following embodiments are considered:

[0133] As shown in Figures 11 to 15 , a bottom cover 4 detachably connected to the bottom of the filter cartridge 5 can be disposed below the filter cartridge 5. A filter cartridge bottom opening 503 is defined at the bottom of the filter cartridge 5, and a bottom cover bottom opening 404 is defined on the bottom cover 4. The filter plates 3 are detachably restrained between the filter cartridge bottom structure 505 of the filter cartridge 5 and the bottom cover 4. In other words, the restraints on both sides of the filter cartridge bottom structure 505 and the bottom cover 4 secure the assembled filter plates 3, eliminating the risk of the filter plates 3 falling off after inversion.

[0134] In a more specific embodiment, the bottom cover 4 includes a bottom cover bottom plate 401 and a bottom cover side plate 402 connected to the edge of the bottom cover bottom plate 401. The bottom cover bottom opening 404 is opened in the middle of the bottom cover bottom plate 401. A filter plate limiting ring 405 is provided at the inner angle between the bottom cover side plate 402 and the bottom cover bottom plate 401.

[0135] The filter cartridge 5 includes a cartridge wall 501 and a cartridge thread 502 arranged on the outer side of the bottom of the cartridge wall 501 . The inner wall of the bottom cover side plate 402 is provided with a bottom cover thread 403 . The filter cartridge 5 and the bottom cover 4 are detachably connected through the threaded connection of the cartridge thread 502 and the bottom cover thread 403 .

[0136] The reason why the filter plate limiting ring 405 is provided is that, due to the existence of the bottom cover thread 403 , the diameter of the filter plate 3 cannot be the same as the inner diameter of the bottom cover 4 (otherwise it cannot be placed inside the bottom cover 4 ). Therefore, in order to limit the filter plate 3 , a filter plate limiting ring 405 is required.

[0137] In addition, considering that the filter plate 3 is generally configured to be relatively thin, and the first substructure 102 or the second substructure 202 is easily squeezed, bent, or deformed, preferably, as shown in FIG15 , the following configuration can be employed: when the bottom cover 4 is tightened to the bottom of the filter cartridge 5, the outer structural edges 12 of the first portion 1 and the second portion 2 are both contacted and pressed by the filter cartridge bottom structure 505 of the filter cartridge 5. In this way, the outer structural edges 12 of the first portion 1 and the second portion 2 can be compressed from both sides, thereby preventing the outer structural edges 12 from warping and maintaining the flatness of the entire filter plate 3. Of course, this improvement is primarily intended for filter plates 3 (such as the filter plates shown in FIG1 to FIG4 ) using the first connection structure and substructure described above. This improvement is not necessary for filter plates using the other two connection methods.

[0138] In some scenarios, the bottom cover 4 can be made of metal, such as stainless steel. In this scenario, the outer wall of the bottom cover 4 can be rolled with a mold, and the bottom cover thread 403 can be formed by inward depression. The bottom cover 4 shown in Figures 11 to 14 is such a bottom cover, and the outer wall has traces of inward depression. The bottom cover base plate 401 can also be pressed down and deformed by a mold (the diameter of the pressing area corresponds to the diameter of the filter plate 3), thereby forming a groove, and the edge of the groove forms the filter plate limiting ring 405. If a material that can be injection molded is used to make the bottom cover 4, the outer wall of the bottom cover 4 can be made into a smooth structure without depression, and the bottom cover base plate 401 does not need to be pressed down and deformed. For example, in the field of drinking utensils, Tritan, PP, etc. can be considered for production. In some cases, ceramics and other materials can also be used.

[0139] The filter plate 3 of the present invention is more suitable for being made of metal materials, such as stainless steel. The thickness can be preferably 0.5 mm. Metal materials are not easy to break and have high processing precision, so the splicing is more accurate. For some materials with less high processing precision, such as ceramics, the following processing method can be used:

[0140] A first part 1 and a second part 2 are cut out of a whole plate, and the two parts obtained by cutting can be accurately spliced ​​together.

[0141] By adjusting the size of the cutting slit to a predetermined size, the resulting cutting slit can be used as the filter slit 301. Of course, the filter slit 301 can also be formed at other times, such as before, during, or after cutting (e.g., by machining to form the filter slit 301 (e.g., filter pores). Various methods are possible. However, the most optimal method may be to use the cutting slit as the filter slit 301 and, during the cutting process, to create the filter slit 301 to the desired specifications by varying the cutting diameter or removing excess components along the cutting path. In this manner, the filter slit 301 is immediately formed after cutting is complete.

[0142] The filter plate 3 of the present invention and the filter cartridge structure to which it is applied can be used in most filtration scenarios. Among them, tea filters are particularly preferred because tea filtration is the most common filtration scenario in daily life, and tea clogging of filter pores is a long-standing problem. Of course, the filter structure and filter cartridge structure of the present invention can also be applied to other filtration fields, such as kitchen sink filters.

[0143] Figures 16 to 24 also illustrate some other modified embodiments:

[0144] 16 and 17 illustrate an embodiment similar to that of FIG. 3 and FIG. 4 , except that the first portion 1 and the second portion 2 of the filter plate 3 in this embodiment are identical.

[0145] 18 and 19 schematically illustrate a square filter plate 3 .

[0146] 20 and 21 illustrate a filter plate 3 having a mesh-like structure.

[0147] Figures 22 and 23 illustrate schematic diagrams of the rotational connection of the first part 1 and the second part 2. In this case, the separation and merging of the filter holes can be achieved by rotation, which is more convenient. As shown in Figure 24, one of the parts, such as the first part 1, can be fixed to the bottom of the filter cartridge 5, and the second part 2 can be rotationally connected to the first part 1 or the filter cartridge 5. By rotating the bottom, the filter holes can be separated, which is also more convenient. However, it may be relatively troublesome to implement. Similarly, a sliding connection structure can actually be constructed between the first part 1 and the second part 2 to achieve the separation of the filter holes by sliding.

[0148] However, no matter how these structures are deformed, they are actually within the scope of the structure described in the present invention. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or changes based on the technical solutions and inventive concepts of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A separate filtering structure, characterized in that: comprising a first part (1) and a second part (2); The first part (1) comprises a plurality of first substructures (102) and a first connecting structure (101) connecting the plurality of first substructures (102) into one. The second part (2) comprises a plurality of second substructures (202) and a second connecting structure (201) connecting the plurality of second substructures (202) into one. The first part (1) and the second part (2) can be spliced ​​to form a filter plate (3), in which the first substructures (102) and the second substructures (202) are arranged alternately, and filtering gaps (301) are formed between adjacent first substructures (102) and second substructures (202).

2. The separate filtering structure according to claim 1, characterized in that: The filtering gap (301) is a strip-shaped slit.

3. The separate filtering structure according to claim 1, characterized in that: The filtering gap (301) is a plurality of filter holes, and the filter holes are surrounded by a first notch (103) and a second notch (203). The first notch (103) is opened at the edge of the first substructure (102), and the second notch (203) is opened at the edge of the second substructure (202).

4. The separate filtering structure according to claim 1, 2 or 3, characterized in that: The first connecting structure (101) is connected to the outer ends of the plurality of first substructures (102); The second connecting structure (201) is connected to the outer ends of a plurality of the second substructures (202); When spliced, the inner end of the first substructure (102) and the inner end of the second substructure (202) are embedded in each other; The thickness of the first substructure (102), the thickness of the second substructure (202), the thickness of the first connecting structure (101) and the thickness of the second connecting structure (201) are all the same, so that the surfaces on both sides of the filter plate (3) after splicing are flat surfaces without protrusions.

5. The separate filtering structure according to claim 4, characterized in that: The filter plate (3) is a circular plate, wherein the first connection structure (101) and the second connection structure (201) are both semicircular rings. After the splicing is completed, the two semicircular rings form a complete circular ring, and the first substructure (102) and the second substructure (202) are located inside the complete circular ring.

6. The separate filtering structure according to claim 4, characterized in that: The filtering gap (301) also exists in any one or more of the following: 1) between the first substructure (102) and the second connecting structure (201); 2) between the second substructure (202) and the first connecting structure (101); 3) Between the first connection structure (101) and the second connection structure (201).

7. The separate filtering structure according to claim 1, 2 or 3, characterized in that: The first connecting structure (101) is connected to the outer side surfaces of the plurality of first substructures (102); The second connecting structure (201) is connected to the outer side surfaces of a plurality of the second substructures (202); wherein the thickness of the first substructure (102) is equal to the thickness of the second substructure (202); When spliced, the inner side surface of the first substructure (102) and the inner side surface of the second substructure (202) are embedded in each other; After splicing, the first substructure (102) and the second substructure (202) overlap in thickness.

8. The separate filtering structure according to claim 1, 2 or 3, characterized in that: The first connecting structure (101) is connected to a portion of the thickness of a plurality of the first substructures (102); The second connecting structure (201) is connected to a portion of the thickness of a plurality of the second substructures (202); The thickness of the first substructure (102) is equal to the thickness of the second substructure (202); the sum of the thicknesses of the first connecting structure (101) and the second connecting structure (201) is equal to the thickness of the first substructure (102); After splicing, the first substructure (102) and the second substructure (202) overlap in thickness, and the first connection structure (101) and the second connection structure (201) overlap in thickness, so that the surfaces on both sides of the filter plate (3) after splicing are flat surfaces without protrusions.

9. The separate filtering structure according to claim 1 or 2 or 3 or 5, characterized in that: The first part (1) and the second part (2) are rotatably connected.

10. The separate filtering structure according to claim 1 or 2 or 3 or 5, characterized in that: The separate filtering structure also includes a filter cartridge (5), wherein a filter cartridge bottom plate (504) is arranged at the bottom of the filter cartridge (5), and a filter cartridge bottom opening (503) is opened in the middle of the filter cartridge bottom plate (504); and the filter plate (3) is detachably mounted on the filter cartridge bottom plate (504).

11. The separate filtering structure according to claim 1 or 2 or 3 or 5, characterized in that: The separate filtering structure further comprises a filter cartridge (5) and a bottom cover (4) detachably connected to the bottom of the filter cartridge (5); a filter cartridge bottom opening (503) is provided at the bottom of the filter cartridge (5), and a bottom cover bottom opening (404) is provided on the bottom cover (4); and the filter plate (3) is detachably limited between the filter cartridge bottom structure (505) of the filter cartridge (5) and the bottom cover (4).

12. The separate filtering structure according to claim 11, characterized in that: The bottom cover (4) comprises a bottom cover bottom plate (401) for supporting the filter plate (3), and a bottom cover side plate (402) connected to the edge of the bottom cover bottom plate (401); the bottom cover bottom opening (404) is opened in the middle of the bottom cover bottom plate (401); a filter plate limiting ring (405) is provided at the inner angle between the bottom cover side plate (402) and the bottom cover bottom plate (401); The filter cartridge (5) comprises a cartridge wall (501) and a filter cartridge thread (502) arranged on the outer side of the bottom of the cartridge wall (501); the inner wall of the bottom cover side plate (402) is provided with a bottom cover thread (403); and the filter cartridge (5) and the bottom cover (4) are detachably connected via the threaded connection between the filter cartridge thread (502) and the bottom cover thread (403).

13. The separate filtering structure according to claim 12, characterized in that: When the bottom cover (4) is screwed onto the bottom of the filter cartridge (5), the structural outer edges (12) of the first part (1) and the second part (2) are both contacted and pressed by the bottom structure (505) of the filter cartridge.

14. The separate filtering structure according to claim 1 or 2 or 3 or 5 or 12 or 13, characterized in that: The separate filtering structure is applied to a tea filter.

15. A method for producing the separate filter structure according to claim 1 or 2 or 3 or 5, characterized in that: The method comprises the following steps: cutting a first part (1) and a second part (2) from an integral plate.

16. A method for producing the bottom cover according to claim 12, characterized in that: The steps include: Using a mold to press the bottom cover side plate (402) inwardly concave to form a bottom cover thread (403); The bottom cover bottom plate (401) is pressed downwards by a mould to form a groove, and the edge of the groove is used as a filter plate limiting ring (405).

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