Clothes dryer roller filtering structure

Abstract

The utility model provides a clothes dryer roller filtering structure, which relates to the technical field of clothes dryers and comprises a baffle plate, a first filtering plate and a second filtering plate which are sequentially distributed from outside to inside, a first positioning part is arranged in the middle of the baffle; a second positioning part is arranged in the middle of the second filter plate, and ventilation meshes are formed in the baffle; a first filter screen is arranged on the first filter plate; a second filter screen is arranged on the second filter plate; the baffle plate and the first filter plate are detachably connected together through a first magnetic suction assembly; the first filter plate and the second filter plate are detachably connected together through a second magnetic attraction assembly. The filter has the advantages that the baffle plate, the first filter plate and the second filter plate are conveniently positioned through the first positioning part and the second positioning part, the coaxiality is ensured, and meanwhile, the filter can be conveniently disassembled and assembled through the first magnetic component and the second magnetic component, so that the filter screen is conveniently cleaned after being used, the operation is simple, and the practicability is high. And the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clothes dryers, and in particular to a drum filter structure of a clothes dryer. Background Art

[0002] The existing dryer drum is provided with a filtering structure, but the existing structural filtering structure is mainly composed of a filter and a filter fixing part, and the filter and the filter fixing part are usually connected in the form of a buckle. After the filtering structure has been used for a period of time, it needs to be cleaned, and the filter fixing part needs to be manually turned to take out the filter for cleaning. After cleaning, the filter is clamped into the filter fixing part. The whole operation is time-consuming and laborious, and the disassembly and assembly are inconvenient, which affects the overall use experience. At the same time, the clamping parts of the filter and the filter fixing part are generally at the outer edge, and the middle part of the filter and the filter fixing part is not positioned and fixed, which causes the positioning accuracy of the filter and the filter fixing part and the coaxiality during rotation to be affected. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing filtering structure is troublesome to disassemble and assemble, and has low positioning accuracy and coaxiality. In order to overcome the above defects of the prior art, the utility model provides a first positioning part and a second positioning part to ensure positioning accuracy and coaxiality, while the first magnetic attraction component and the second magnetic attraction component can be used to facilitate disassembly and assembly, thereby improving the user experience.

[0004] For the purpose of this utility model, the following technical solutions are adopted:

[0005] A dryer drum filter structure includes a baffle, a first filter plate, and a second filter plate, which are sequentially distributed from outside to inside; a first positioning portion is provided at the middle of the baffle near the second filter plate; a second positioning portion is provided at the middle of the second filter plate near the baffle, and the second positioning portion passes through the first filter plate and is positioned and matched with the first positioning portion; a ventilation mesh is provided on the baffle; a first filter screen is provided on the first filter plate; a second filter screen is provided on the second filter plate; the baffle and the first filter plate are detachably connected together through a first magnetic suction component; the first filter plate and the second filter plate are detachably connected together through a second magnetic suction component. The baffle, the first filter plate, and the second filter plate are conveniently positioned through the first positioning portion and the second positioning portion to ensure positioning accuracy and coaxiality, and the first magnetic suction component and the second magnetic suction component can be conveniently disassembled and assembled, so that the filter screen can be cleaned after use, the operation is simple, and the convenience and user experience of use are improved.

[0006] Preferably, the baffle comprises a baffle annular plate and a baffle center seat; the ventilation mesh is distributed between the baffle annular plate and the baffle center seat; the first positioning portion is a positioning groove arranged on the baffle center seat; a plurality of positioning clamps are arranged on the inner wall of the positioning groove at intervals along the circumferential direction; the second filter plate comprises a second filter annular plate and a filter center seat; the second filter mesh is distributed between the second filter annular plate and the filter center seat; the second positioning portion is a positioning boss arranged on the filter center seat and plugged with the positioning groove; the end face of the positioning boss is provided with at least one positioning slot that is plugged with the positioning clamp. The plugging and matching of the positioning boss with the positioning groove can ensure coaxiality, and the plugging and matching of the positioning slot with the positioning clamp can ensure that the baffle and the second filter plate are relatively fixed, and the stability and connectivity during use can be ensured.

[0007] Preferably, the first filter plate includes a first filter annular plate and a filter center disk; a plurality of first filter reinforcement rods are arranged between the first filter annular plate and the filter center disk at intervals along the circumferential direction; the first filter net is distributed between two adjacent first filter reinforcement rods; a through positioning through hole is arranged at the center of the filter center disk; the positioning boss is inserted into the positioning groove through the positioning through hole. The connection strength of the first filter plate can be further improved by the first filter reinforcement rod, and the positioning boss is conveniently inserted through the positioning through hole, so that the first filter plate is limited and fixed between the baffle plate and the second filter plate after being connected, thereby improving the stability of the connection between the three.

[0008] Preferably, the first magnetic attraction assembly includes a plurality of first magnetic attraction parts and second magnetic attraction parts corresponding to the first magnetic attraction parts; the plurality of first magnetic attraction parts are distributed on the baffle plate at intervals along the circumferential direction; the plurality of second magnetic attraction parts are distributed on the first filter plate at intervals along the circumferential direction; the second magnetic attraction assembly includes a plurality of third magnetic attraction parts and fourth magnetic attraction parts corresponding to the third magnetic attraction parts; the plurality of third magnetic attraction parts are distributed on the first filter plate at intervals along the circumferential direction; the plurality of fourth magnetic attraction parts are distributed on the second filter plate at intervals along the circumferential direction. The first magnetic attraction part and the second magnetic attraction part facilitate quick disassembly and assembly between the baffle plate and the first filter plate, and the third magnetic attraction part and the fourth magnetic attraction part facilitate quick disassembly and assembly between the first filter plate and the second filter plate, while the overall connectivity can be ensured by the magnetic attraction effect.

[0009] Preferably, the baffle annular plate is provided with a first annular positioning step surface that is indented inwardly on one side surface close to the first filter plate; the first magnetic attraction parts are circumferentially and evenly spaced on the first annular positioning step surface; the second magnetic attraction parts are circumferentially and evenly spaced on the outer peripheral wall of the first filter annular plate, and during adsorption, the first filter annular plate is closely attached to the first annular positioning step surface on one side close to the baffle. The first annular positioning step surface facilitates the baffle and the first filter plate to be limited and positioned, and at the same time, the magnetic attraction effect is used to ensure the stability of the connection.

[0010] Preferably, a second annular positioning step surface is provided on one side of the second filter ring plate close to the first filter plate; the fourth magnetic attraction parts are distributed on the second annular positioning step surface at equal intervals along the circumferential direction; the third magnetic attraction parts are distributed on the outer peripheral wall of the first filter ring plate at equal intervals along the circumferential direction, and when adsorbed, the first filter ring plate is close to the second filter plate on one side thereof and is tightly attached to the second annular positioning step surface. The second annular positioning step surface facilitates the first filter plate and the second filter plate to be limited and positioned, and at the same time, the magnetic attraction effect is used to ensure the stability of the connection.

[0011] Preferably, each of the third magnetic attraction parts is located between two adjacent second magnetic attraction parts. The third magnetic attraction part and the second magnetic attraction part are arranged in a spaced manner to further ensure the overall connectivity and stability.

[0012] Preferably, a plurality of second filter reinforcement rods are arranged at intervals along the circumferential direction between the second filter annular plate and the filter center seat; the second filter screen is arranged between two adjacent second filter reinforcement rods; and a plurality of positioning reinforcement ribs are arranged at intervals along the circumferential direction between the positioning boss and the filter center seat. The second filter reinforcement rods and positioning reinforcement ribs further improve the overall connectivity of the second filter plate and the stability of the structure.

[0013] Preferably, the filter center disk is provided with a first positioning convex ring on one side close to the baffle; the baffle center seat is provided with a second positioning convex ring on one side close to the first filter plate; and a positioning step is formed between the second positioning convex ring and the baffle center seat; when fixed, the outer peripheral wall of the second positioning convex ring is tightly matched with the inner peripheral wall of the first positioning convex ring, and the end face of the first positioning convex ring is against the positioning step. Through the cooperation of the first positioning convex ring and the second positioning convex ring, the positioning between the baffle plate and the first filter plate can be ensured, the positioning accuracy can be improved, the coaxiality can be ensured, and the connectivity between the baffle plate and the first filter plate can also be ensured.

[0014] Preferably, the ventilation mesh is composed of a plurality of regular pentagonal holes and a plurality of regular triangular holes; two adjacent sides of each regular pentagonal hole are connected to another two regular pentagonal holes, and the remaining three adjacent sides are connected to another three regular triangular holes. The ventilation effect is further improved by combining regular pentagonal holes and regular triangular holes, and impurities of different sizes can also be filtered, thereby further improving the ventilation and filtering effects.

[0015] To sum up, the advantage of the utility model is that the baffle, the first filter plate and the second filter plate can be conveniently positioned through the first positioning part and the second positioning part to ensure coaxiality, and at the same time, the first magnetic suction component and the second magnetic suction component can be conveniently disassembled and assembled, so that the filter net can be cleaned after use, the operation is simple, and the convenience and user experience of use are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an explosion from the outside to the inside of the drum filter structure of the clothes dryer of the utility model.

[0017] Figure 2 It is a schematic diagram of an explosion from the inside to the outside of the drum filter structure of the clothes dryer of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the baffle of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the second filter plate of the utility model.

[0020] Description of reference numerals:

[0021] 1. baffle; 10. ventilation mesh; 101. regular pentagonal hole; 102. regular triangle hole; 11. baffle ring plate; 111. first annular positioning step surface; 12. baffle center seat; 121. positioning groove; 122. positioning card plate; 123. second positioning convex ring; 124. positioning step; 2. first filter plate; 20. first filter screen; 21. first filter ring plate; 22. filter center plate; 221. positioning through hole ; 222, first positioning convex ring; 23, first filter reinforcement rod; 3, second filter plate; 30, second filter screen; 31, second filter annular plate; 311, second annular positioning step surface; 32, filter center seat; 321, positioning convex column; 322, positioning slot; 323, positioning reinforcement rib; 33, second filter reinforcement rod; 41, first magnetic attraction part; 42, second magnetic attraction part; 43, third magnetic attraction part; 44, fourth magnetic attraction part. DETAILED DESCRIPTION

[0022] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0023] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0024] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 4 As shown, a dryer drum filter structure comprises a baffle 1, a first filter plate 2 and a second filter plate 3 which are sequentially distributed from outside to inside; a first positioning portion is provided at the middle of the baffle 1 near the second filter plate 3; a second positioning portion is provided at the middle of the second filter plate 3 near the baffle 1, and the second positioning portion passes through the first filter plate 2 and is positioned and matched with the first positioning portion; a ventilation mesh 10 is provided on the baffle 1; a first filter screen 20 is provided on the first filter plate 2; a second filter screen 30 is provided on the second filter plate 3; the baffle 1 and the first filter plate 2 are detachably connected together through a first magnetic suction component; the first filter plate 2 and the second filter plate 3 are detachably connected together through a second magnetic suction component. The baffle 1, the first filter plate 2 and the second filter plate 3 are conveniently positioned by the first positioning portion and the second positioning portion to ensure coaxiality, and the first magnetic suction component and the second magnetic suction component can be conveniently disassembled and assembled, so that the filter screen can be cleaned after use, the operation is simple, and the convenience and user experience of use are improved.

[0027] like Figures 1 to 3As shown, the baffle 1 includes a baffle annular plate 11 and a baffle center seat 12; the ventilation mesh 10 is distributed between the baffle annular plate 11 and the baffle center seat 12; the first positioning portion is a positioning groove 121 arranged on the baffle center seat 12; five positioning clamps 122 are arranged at equal intervals along the circumferential direction on the inner wall of the positioning groove 121; the second filter plate 3 includes a second filter annular plate 31 and a filter center seat 32; the second filter net 30 is distributed between the second filter annular plate 31 and the filter center seat 32; the second positioning portion is a positioning boss 321 arranged on the filter center seat 32 and plugged with the positioning groove 121; the end face of the positioning boss 321 is provided with a positioning slot 322 that is engaged with the positioning clamp 122. The five positioning clamps 122 facilitate the positioning slot 322 to rotate and one of them is directly inserted, without the need to select the corresponding positioning clamp 122 for insertion, thereby improving the convenience of installation. The coaxiality can be ensured by plugging and matching the positioning boss 321 with the positioning groove 121, and the relative fixation of the baffle 1 and the second filter plate 3 can be ensured by the positioning card slot 322 and the positioning card plate 122, ensuring the stability and connectivity during use. A number of second filter reinforcement rods 33 are arranged at intervals along the circumference between the second filter annular plate 31 and the filter center seat 32; the second filter net 30 is distributed between two adjacent second filter reinforcement rods 33; and a number of positioning reinforcement ribs 323 are arranged at intervals along the circumference between the positioning boss 321 and the filter center seat 32. The second filter reinforcement rods 33 and the positioning reinforcement ribs 323 further improve the overall connectivity and structural stability of the second filter plate 3.

[0028] like Figures 1 to 4As shown, the first filter plate 2 includes a first filter annular plate 21 and a filter center disk 22; a plurality of first filter reinforcement rods 23 are arranged at intervals along the circumferential direction between the first filter annular plate 21 and the filter center disk 22; the first filter net 20 is distributed between two adjacent first filter reinforcement rods 23; a through positioning through hole 221 is arranged at the center of the filter center disk 22; the positioning protrusion 321 passes through the positioning through hole 221 and is positioned and inserted into the positioning groove 121. The connection strength of the first filter plate 2 can be further improved by the first filter reinforcement rod 23, and the positioning protrusion 321 can be easily penetrated by the positioning through hole 221, so that the first filter plate 2 is limited and fixed between the baffle plate 1 and the second filter plate 3 after the baffle plate 1 and the second filter plate 3 are connected, thereby improving the stability of the connection between the three. A first positioning convex ring 222 is provided on one side of the filter center disk 22 close to the baffle 1; a second positioning convex ring 123 is provided on one side of the baffle center seat 12 close to the first filter plate 2; and a positioning step 124 is formed between the second positioning convex ring 123 and the baffle center seat 12; when fixed, the outer peripheral wall of the second positioning convex ring 123 is tightly matched with the inner peripheral wall of the first positioning convex ring 222, and the end face of the first positioning convex ring 222 is against the positioning step 124. Through the cooperation between the first positioning convex ring 222 and the second positioning convex ring 123, the positioning between the baffle 1 and the first filter plate 2 can be ensured, the positioning accuracy can be improved, the coaxiality can be ensured, and the connectivity between the baffle 1 and the first filter plate 2 can also be ensured.

[0029] like Figure 1 to Figure 2 As shown, the first magnetic attraction assembly includes a plurality of first magnetic attraction parts 41 and second magnetic attraction parts 42 corresponding to the first magnetic attraction parts 41; the plurality of first magnetic attraction parts 41 are distributed on the baffle 1 at intervals along the circumferential direction; the plurality of second magnetic attraction parts 42 are distributed on the first filter plate 2 at intervals along the circumferential direction; the second magnetic attraction assembly includes a plurality of third magnetic attraction parts 43 and fourth magnetic attraction parts 44 corresponding to the third magnetic attraction parts 43; the plurality of third magnetic attraction parts 43 are distributed on the first filter plate 2 at intervals along the circumferential direction; the plurality of fourth magnetic attraction parts 44 are distributed on the second filter plate 3 at intervals along the circumferential direction. The first magnetic attraction parts 41 and the second magnetic attraction parts 42 facilitate the rapid disassembly and assembly between the baffle 1 and the first filter plate 2, and the third magnetic attraction parts 43 and the fourth magnetic attraction parts 44 facilitate the rapid disassembly and assembly between the first filter plate 2 and the second filter plate 3, and the overall connectivity can be ensured by the magnetic attraction effect.

[0030] like Figures 1 to 4As shown, a first annular positioning step surface 111 concave inwardly is provided on one side of the baffle annular plate 11 close to the first filter plate 2; the first magnetic attraction parts 41 are distributed on the first annular positioning step surface 111 at equal intervals along the circumferential direction; the second magnetic attraction parts 42 are distributed on the outer peripheral wall of the first filter annular plate 21 at equal intervals along the circumferential direction. When adsorbed, the first filter annular plate 21 is close to the side of the baffle 1 and is tightly attached to the first annular positioning step surface 111. The first annular positioning step surface 111 facilitates the positioning and positioning of the baffle 1 and the first filter plate 2, and at the same time, the magnetic attraction effect is used to ensure the stability of the connection. A second annular positioning step surface 311 concave inwardly is provided on one side of the second filter annular plate 31 close to the first filter plate 2; the fourth magnetic attraction parts 44 are distributed on the second annular positioning step surface 311 at equal intervals along the circumferential direction; the third magnetic attraction parts 43 are distributed on the outer peripheral wall of the first filter annular plate 21 at equal intervals along the circumferential direction. When adsorbed, the first filter annular plate 21 is close to the side of the second filter plate 3 and is tightly attached to the second annular positioning step surface 311. The second annular positioning step surface 311 facilitates the first filter plate 2 and the second filter plate 3 to be limited and positioned, and the magnetic attraction effect is used to ensure the stability of the connection. Each third magnetic attraction portion 43 is located between two adjacent second magnetic attraction portions 42. The third magnetic attraction portion 43 and the second magnetic attraction portion 42 are arranged in a spaced manner to further ensure the overall connectivity and stability.

[0031] like Figure 3 As shown, the ventilation mesh 10 is composed of a plurality of regular pentagonal holes 101 and a plurality of regular triangular holes 102; two adjacent sides of each regular pentagonal hole 101 are connected to another two regular pentagonal holes 101, and the remaining three adjacent sides are connected to another three regular triangular holes 102. The ventilation effect is further improved by combining the regular pentagonal holes 101 and the regular triangular holes 102, and impurities of different sizes can also be filtered, thereby further improving the ventilation and filtering effects.

[0032] The advantage of the utility model is that the baffle 1, the first filter plate 2 and the second filter plate 3 can be conveniently positioned by the first positioning part and the second positioning part to ensure coaxiality, and at the same time, the first magnetic attraction component and the second magnetic attraction component can be conveniently disassembled and assembled, so that the filter net can be cleaned after use, the operation is simple, and the convenience of use is improved.

[0033] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0034] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A clothes dryer drum filter structure, characterized in that: The invention comprises a baffle (1), a first filter plate (2) and a second filter plate (3) which are sequentially arranged from the outside to the inside; a first positioning portion is arranged at a middle part of the baffle (1) close to the second filter plate (3); a second positioning portion is arranged at a middle part of the second filter plate (3) close to the baffle (1), and the second positioning portion passes through the first filter plate (2) and is positioned and matched with the first positioning portion; a ventilation mesh (10) is arranged on the baffle (1); a first filter screen (20) is arranged on the first filter plate (2); a second filter screen (30) is arranged on the second filter plate (3); the baffle (1) and the first filter plate (2) are detachably connected together via a first magnetic attraction component; the first filter plate (2) and the second filter plate (3) are detachably connected together via a second magnetic attraction component; The baffle plate (1) comprises a baffle annular plate (11) and a baffle center seat (12); the ventilation mesh holes (10) are distributed between the baffle annular plate (11) and the baffle center seat (12); the first positioning portion is a positioning groove (121) provided on the baffle center seat (12); a plurality of positioning clamping plates (122) are provided on the inner peripheral wall of the positioning groove (121) at intervals along the circumferential direction; the second filter plate (3) comprises a second filter annular plate (31) and a filter center seat (32); the second filter net (30) is distributed between the second filter annular plate (31) and the filter center seat (32); the second positioning portion is a positioning boss (321) provided on the filter center seat (32) and plugged into the positioning groove (121); the end surface of the positioning boss (321) is provided with at least one positioning clamping groove (322) clamped into the positioning clamping plate (122).

2. The dryer drum filter structure according to claim 1, characterized in that: The first filter plate (2) comprises a first filter annular plate (21) and a filter center disk (22); a plurality of first filter reinforcement rods (23) are arranged at intervals along the circumferential direction between the first filter annular plate (21) and the filter center disk (22); the first filter net (20) is distributed between two adjacent first filter reinforcement rods (23); a positioning through hole (221) is arranged at the center of the filter center disk (22); the positioning protrusion (321) passes through the positioning through hole (221) and is positioned and inserted into the positioning groove (121).

3. The dryer drum filter structure according to claim 2, characterized in that: The first magnetic attraction component comprises a plurality of first magnetic attraction parts (41) and second magnetic attraction parts (42) arranged corresponding to the first magnetic attraction parts (41); the plurality of first magnetic attraction parts (41) are distributed on the baffle plate (1) at intervals along the circumferential direction; the plurality of second magnetic attraction parts (42) are distributed on the first filter plate (2) at intervals along the circumferential direction; the second magnetic attraction component comprises a plurality of third magnetic attraction parts (43) and fourth magnetic attraction parts (44) arranged corresponding to the third magnetic attraction parts (43); the plurality of third magnetic attraction parts (43) are distributed on the first filter plate (2) at intervals along the circumferential direction; the plurality of fourth magnetic attraction parts (44) are distributed on the second filter plate (3) at intervals along the circumferential direction.

4. The dryer drum filter structure according to claim 3, characterized in that: A first annular positioning step surface (111) recessed inwardly is provided on one side of the baffle annular plate (11) close to the first filter plate (2); the first magnetic attraction portions (41) are circumferentially and evenly spaced on the first annular positioning step surface (111); the second magnetic attraction portions (42) are circumferentially and evenly spaced on the outer peripheral wall of the first filter annular plate (21); during adsorption, the side of the first filter annular plate (21) close to the baffle plate (1) is tightly attached to the first annular positioning step surface (111).

5. The dryer drum filter structure according to claim 4, characterized in that: A second annular positioning step surface (311) recessed inwardly is provided on one side of the second filter annular plate (31) close to the first filter plate (2); the fourth magnetic attraction portions (44) are circumferentially and evenly spaced on the second annular positioning step surface (311); the third magnetic attraction portions (43) are circumferentially and evenly spaced on the outer peripheral wall of the first filter annular plate (21); during adsorption, a side of the first filter annular plate (21) close to the second filter plate (3) is tightly attached to the second annular positioning step surface (311).

6. The dryer drum filter structure according to claim 5, characterized in that: Each of the third magnetic attraction portions (43) is located between two adjacent second magnetic attraction portions (42).

7. The dryer drum filter structure according to claim 1, characterized in that: A plurality of second filter reinforcement rods (33) are arranged at intervals along the circumferential direction between the second filter annular plate (31) and the filter center seat (32); the second filter screen (30) is arranged between two adjacent second filter reinforcement rods (33); and a plurality of positioning reinforcement ribs (323) are arranged at intervals along the circumferential direction between the positioning boss (321) and the filter center seat (32).

8. The dryer drum filter structure according to claim 2, characterized in that: A first positioning convex ring (222) is provided on one side of the filter center disk (22) close to the baffle plate (1); a second positioning convex ring (123) is provided on one side of the baffle center seat (12) close to the first filter plate (2); and a positioning step (124) is formed between the second positioning convex ring (123) and the baffle center seat (12); when fixed, the outer peripheral wall of the second positioning convex ring (123) is tightly matched with the inner peripheral wall of the first positioning convex ring (222), and the end face of the first positioning convex ring (222) is abutted against the positioning step (124).

9. The dryer drum filter structure according to claim 1, characterized in that: The ventilation mesh (10) is composed of a plurality of regular pentagonal holes (101) and a plurality of regular triangular holes (102); two adjacent sides of each regular pentagonal hole (101) are connected to the other two regular pentagonal holes (101), and the remaining three adjacent sides are connected to the other three regular triangular holes (102).

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