Shell structure of drum clothes dryer

Abstract

The utility model provides a casing structure of a drum clothes dryer, which relates to the technical field of drum clothes dryers and comprises a casing body, a drum cavity for mounting a drum is arranged in the casing body, and a ventilation mounting port communicated with the drum cavity is arranged on a rear plate of the casing body. A grid assembly is detachably connected to the ventilation mounting opening; an access hole is formed in a bottom plate of the enclosure body; an overhaul baffle is detachably connected to the machine shell body and located at the overhaul opening, and the overhaul baffle is used for sealing the overhaul opening when fixed. The roller clothes dryer has the advantages that the roller clothes dryer can be conveniently detached and directly cleaned through the detachable grating assembly, sundries and dust can be conveniently treated, normal use of the roller clothes dryer is ensured, meanwhile, the detachable overhaul baffle is arranged, direct overhaul can be conveniently conducted at the overhaul opening, the whole machine does not need to be detached, and maintenance and repair are convenient.

Description

Technical Field

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

[0002] Existing drum dryers, such as the Chinese utility model patent (publication number CN216404842U), are named drum dryers. The grille plate in the above-mentioned dryer structure is fixedly connected to the rear of the drum dryer. After a period of use, dust or debris will accumulate on the grille plate, affecting the ventilation effect and thus affecting the normal operation of the drum dryer. Since the grille plate cannot be removed, it is inconvenient to clean it. In addition, the body of the above-mentioned dryer structure is arranged in an integrated manner. When a fault occurs inside the machine, it needs to be disassembled as a whole, which is troublesome to disassemble and inconvenient for maintenance and repair. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing fixed grille plates are inconvenient to clean and maintain. In order to overcome the defects of the above prior art, the utility model provides a detachable grille assembly that is convenient for disassembling the grille assembly for direct cleaning, thereby ensuring the normal use of the drum dryer. At the same time, a detachable inspection baffle is provided to facilitate direct inspection at the inspection port, thereby facilitating maintenance and repair.

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

[0005] A drum dryer housing structure includes a housing body, a drum cavity for installing a drum is provided in the housing body, an opening connected to the drum cavity is provided on the front plate of the housing body; a door panel is rotatably connected to the opening on the housing body; the door panel is used to close the opening and is sealed to the opening when closed; a ventilation installation port connected to the drum cavity is provided on the rear plate of the housing body; a grille assembly is detachably connected to the ventilation installation port; an inspection port is provided on the bottom plate of the housing body; an inspection baffle is detachably connected to the inspection port on the housing body, and is used to close the inspection port when the inspection baffle is fixed. The detachable grille assembly is convenient for direct cleaning after a period of use, so that debris and dust can be handled conveniently to ensure the normal use of the drum dryer. At the same time, a detachable inspection baffle is provided to facilitate direct inspection at the inspection port without disassembling the entire machine, which is convenient for maintenance and repair.

[0006] Preferably, an ear plate is provided on one side of the inspection baffle; a connection hole is provided on the ear plate, and a screw hole is provided on the bottom plate, and a connection screw passes through the connection hole and is threadedly connected to the screw hole, so that the inspection baffle is fixedly connected to the bottom plate. The connection hole and the screw hole facilitate detachable connection, and the operation is convenient and quick.

[0007] Preferably, the inspection baffle is provided with a protrusion of the same shape as the inspection opening, and a step surface is formed between the protrusion and the inspection baffle along the outer periphery of the protrusion. When fixed, the protrusion is snapped into the inspection opening, and the step surface is pressed against the bottom of the bottom plate. The protrusion can be snapped into the inspection opening, thereby ensuring that the inspection baffle is tightly fitted with the bottom plate, and the step surface is pressed against the bottom of the bottom plate to ensure the sealing effect of the bottom.

[0008] Preferably, the grille assembly includes a circular grille plate and a circular grille plate; the circular grille plate and the circular grille plate are detachably connected to the rear plate, the outer ring of the circular grille plate is connected to the inner ring of the circular grille plate, and the circular grille plate and the circular grille plate are combined to close the ventilation installation opening; a plurality of first grille holes are arranged circumferentially on the circular grille plate; a plurality of second grille holes are arranged transversely in the middle of the circular grille plate. The overall aesthetics is ensured by the coordination of the circular grille plate and the circular grille plate, and the first grille hole on the circular grille plate is located on the outer ring of the circular grille plate, which facilitates the air intake of the first grille hole and the air outlet of the second grille hole, ensuring a good air intake and outlet effect and improving the circulation of the overall ventilation.

[0009] Preferably, it also includes an annular mounting plate integrally formed with the rear plate; the outer ring of the annular mounting plate is connected to the inner ring of the ventilation mounting port; a plurality of ventilation holes are arranged circumferentially at intervals on the annular mounting plate corresponding to the first grille holes; a plurality of snap-in holes are arranged circumferentially at intervals on the outer ring of the annular mounting plate; a plurality of snap-in recesses are arranged on the inner wall of the annular grille plate at positions corresponding to the snap-in holes; each snap-in recess is provided with a connecting block snap-fitted with the snap-in hole. The snap-fitting of the snap-in hole and the connecting block facilitates detachable connection, thereby facilitating cleaning after disassembly, and also facilitating internal repair and maintenance.

[0010] Preferably, each of the clamping holes includes an insertion portion and a clamping portion; the aperture width of the insertion portion is greater than the aperture width of the clamping portion; an insertion clamp is provided at the end of the connection block; the width of the insertion clamp is greater than the width of the connection block, and a guide slope for easy insertion is provided on the insertion clamp. After the insertion clamp is inserted into the insertion portion, the insertion clamp can be rotated into the clamping portion by rotating the annular grille plate, and the annular grille plate can be fixed on the annular mounting plate, which is convenient and quick to install.

[0011] Preferably, a U-shaped plug is provided on the outer wall of the annular grille plate; the U-shaped plug is arranged horizontally, one end of the U-shaped plug is connected to the annular grille plate, and the other end of the U-shaped plug is bent with a mounting block; a positioning hole is provided on the annular mounting plate corresponding to the U-shaped plug, and when plugged in, the two side plates of the U-shaped plug abut against the two sides of the positioning hole, and the mounting block abuts against the rear plate. The U-shaped plug can be squeezed and deformed to facilitate installation. After the annular grille plate is rotated and fixed, the U-shaped plug can be directly squeezed and inserted into the positioning hole, and the two sides of the U-shaped plug expand and abut against the positioning hole; when disassembling, the mounting block is manually toggled to squeeze the two sides of the U-shaped plug in, so as to unlock the annular grille plate and facilitate rotation and removal.

[0012] Preferably, the inner ring of the annular mounting plate is provided with a plurality of mounting bayonet holes along the circumferential direction; the inner wall of the outer ring of the circular grille plate is provided with a plurality of mounting blocks corresponding to the mounting bayonet holes; the end of the mounting block is provided with a mounting clamp head, and when clamped, the mounting block is clamped into the mounting bayonet hole, and the mounting clamp head is pressed against the inner wall of the inner ring of the annular mounting plate; the inner ring of the annular mounting plate is also provided with a plurality of disassembly notches along the circumferential direction. The mounting clamp head and the mounting bayonet holes cooperate to facilitate the fixing and buckling of the circular grille plate on the annular mounting plate, and the disassembly notches facilitate the removal of the circular grille plate by inserting the circular grille plate by hand during disassembly, which is convenient for quick operation and also convenient for cleaning.

[0013] Preferably, a plurality of the first grille holes are arranged at equal intervals along the circumferential direction on the annular grille plate, and the plurality of the first grille holes are distributed in a spiral shape. The air intake effect is further achieved through the first grille holes distributed in a spiral shape.

[0014] Preferably, the middle of the circular grille plate is a convex portion protruding outward; a plurality of second grille holes are arranged on the convex portion at equal intervals in the horizontal direction, each second grille hole is arranged vertically, and the length of the second grille hole gradually increases from the left end to the middle, and gradually decreases from the middle to the right end, and the plurality of second grille holes are arranged symmetrically. The above structure further achieves the air outlet effect of the second grille hole.

[0015] To sum up, the advantage of the utility model is that the detachable grille assembly can be disassembled for direct cleaning after being used for a period of time, which facilitates the disposal of debris and dust and ensures the normal use of the drum dryer. At the same time, a detachable inspection baffle is provided to facilitate direct inspection at the inspection port without disassembling the entire machine, thereby facilitating maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the casing structure of the drum dryer of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure inside the casing structure of the drum dryer of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the back of the casing structure of the drum dryer of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the maintenance baffle of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the annular mounting plate of the utility model.

[0021] Figure 6 It is a structural schematic diagram of a circular grille plate of the utility model.

[0022] Figure 7 It is a structural schematic diagram of the circular ring grille plate of the utility model.

[0023] Description of reference numerals:

[0024] 1. Casing body; 11. Front plate; 12. Rear plate; 13. Bottom plate; 131. Screw hole; 2. Drum cavity; 3. Opening; 4. Door plate; 5. Ventilation installation port; 6. Grille assembly; 61. Ring grille plate; 611. First grille hole; 612. Snap-on notch; 613. Connecting block; 614. Inserting clamp; 615. Guide slope; 616. U-shaped plug block; 617. Installing dial block; 62. Round Grille plate; 620, raised portion; 621, second grille hole; 622, mounting block; 623, mounting clamp; 7, inspection port; 8, inspection baffle; 80, ear plate; 81, protrusion; 82, step surface; 801, connecting hole; 9, annular mounting plate; 91, ventilation hole; 92, clamping hole; 921, insertion portion; 922, clamping portion; 93, positioning socket; 94, mounting bayonet; 95, disassembly recess. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] In the embodiments of the present application, unless otherwise clearly specified or limited, a first feature is "on" a second feature.

[0028] Or "below" can 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, the first feature being "above", "above" and "above" the second feature can 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. The first feature being "below", "below" and "below" the second feature can 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.

[0029] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 7 As shown, a casing structure of a drum dryer comprises a casing body 1, a drum cavity 2 for installing a drum is arranged in the casing body 1, and an opening 3 communicating with the drum cavity 2 is arranged on a front plate 11 of the casing body 1;

[0031] A door panel 4 is rotatably connected to the opening 3 of the casing body 1; when the door panel 4 is closed, it is used to close the opening 3 and is sealed with the opening 3; a ventilation installation port 5 communicating with the drum cavity 2 is provided on the rear plate 12 of the casing body 1; a grille assembly 6 is detachably connected to the ventilation installation port 5; an inspection port 7 is provided on the bottom plate 13 of the casing body 1; an inspection baffle 8 is detachably connected to the inspection port 7 of the casing body 1, and when the inspection baffle 8 is fixed, it is used to close the inspection port 7. After using the detachable grille assembly 6 for a period of time, the grille assembly 6 can be disassembled and directly cleaned, which is convenient for handling debris and dust, ensuring the normal use of the drum dryer. At the same time, a detachable inspection baffle 8 is provided, which is convenient for direct inspection at the inspection port 7 without disassembling the entire machine, which is convenient for maintenance and repair.

[0032] like Figures 1 to 4As shown, an ear plate 80 is provided on one side of the inspection baffle 8; a connection hole 801 is provided on the ear plate 80, and a screw hole 131 is provided on the bottom plate 13. The inspection baffle 8 is fixedly connected to the bottom plate 13 by passing the connection screw through the connection hole 801 and threading into the screw hole 131. The connection hole 801 and the screw hole 131 facilitate the detachable connection, and the operation is convenient and quick. The inspection baffle 8 is provided with a protrusion 81 of the same shape as the inspection port 7, and a downwardly concave step surface 82 is formed between the protrusion 81 and the inspection baffle 8 along the outer periphery of the protrusion 81, and the inspection port 7 and the protrusion 81 are both rectangular. When fixed, the protrusion 81 is clamped into the inspection port 7, and the step surface 82 is pressed against the bottom of the bottom plate 13. The protrusion 81 can be just clamped into the inspection port 7, thereby ensuring that the inspection baffle 8 is tightly matched with the bottom plate 13, and the step surface 82 is pressed against the bottom of the bottom plate 13 to ensure the sealing effect of the bottom.

[0033] like Figures 4 to 7 As shown, the grille assembly 6 includes a circular grille plate 61 and a circular grille plate 62; the circular grille plate 61 and the circular grille plate 62 are respectively detachably connected to the rear plate 12, the outer ring of the circular grille plate 62 is connected to the inner ring of the circular grille plate 61, and the circular grille plate 62 and the circular grille plate 61 are combined to close the ventilation installation port 5; a plurality of first grille holes 611 are arranged circumferentially on the circular grille plate 61; the plurality of first grille holes 611 are arranged at equal intervals along the circumference on the circular grille plate 61, and the plurality of first grille holes 611 are distributed in a spiral shape. The air intake effect is further achieved by the first grille holes 611 distributed in a spiral shape. A plurality of second grille holes 621 are arranged in a transverse arrangement in the middle of the circular grille plate 62. The middle part of the circular grille plate 62 is a protruding portion 620 protruding outward; a plurality of second grille holes 621 are arranged on the protruding portion 620 at equal intervals in the horizontal direction, each second grille hole 621 is arranged vertically, and the length of the second grille hole 621 gradually increases from the left end to the middle direction, and gradually decreases from the middle to the right end direction, and the plurality of second grille holes 621 are arranged symmetrically. The above structure further realizes the air outlet effect of the second grille hole 621. The overall aesthetics is ensured by the coordination of the annular grille plate 61 and the circular grille plate 62. At the same time, the first grille hole 611 on the annular grille plate 61 is located on the outer circle of the circular grille plate 62, which facilitates the air intake of the first grille hole 611 and the air outlet of the second grille hole 621, ensuring a good air intake and outlet effect and improving the circulation of the overall ventilation.

[0034] like Figures 5 to 7As shown, it also includes an annular mounting plate 9 integrally formed with the rear plate 12, and the annular mounting plate 9 is used to be mounted and fixed with the circular grille plate 62 and the annular grille plate 61; the outer ring of the annular mounting plate 9 is connected to the inner ring of the ventilation mounting port 5; a plurality of arc-shaped ventilation holes 91 are arranged at intervals along the circumferential direction on the annular mounting plate 9 corresponding to the first grille hole 611; a plurality of snap-in holes 92 are arranged at intervals along the circumferential direction on the outer ring of the annular mounting plate 9; a plurality of snap-in recesses 612 are arranged on the inner wall of the annular grille plate 61 at positions corresponding to the snap-in holes 92; each snap-in recess 612 is provided with a connecting block 613 snap-fitted with the snap-in hole 92. The snap-fitted connection between the snap-in holes 92 and the connecting block 613 facilitates the detachable connection, and the disassembly and assembly are convenient and quick, so that it is convenient to clean after disassembly, and it is also convenient to repair and maintain the interior. Each clamping hole 92 includes an insertion portion 921 and a clamping portion 922; the aperture width of the insertion portion 921 is greater than the aperture width of the clamping portion 922; an insertion clamp 614 is provided at the end of the connecting clamp block 613; the width of the insertion clamp 614 is greater than the width of the connecting clamp block 613, and a guide slope 615 for easy insertion is provided on the insertion clamp 614. After the insertion clamp 614 is inserted into the insertion portion 921, the insertion clamp 614 can be rotated into the clamping portion 922 by rotating the annular grille plate 61, and the annular grille plate 61 is fixed on the annular mounting plate 9, so that the two are fixed and will not fall off easily without external force, and the installation is convenient and quick. A U-shaped plug block 616 is arranged on the outer wall of the annular grille plate 61; the U-shaped plug block 616 is arranged horizontally, one end of the U-shaped plug block 616 is connected to the annular grille plate 61, and the other end of the U-shaped plug block 616 is bent with a mounting block 617; a positioning hole 93 is arranged on the annular mounting plate 9 corresponding to the U-shaped plug block 616, and when plugged in, the two side plates of the U-shaped plug block 616 are pressed against the two sides of the positioning hole 93, and the mounting block 617 is pressed against the rear plate 12. The U-shaped plug block 616 can be squeezed and deformed, so that it is convenient to install. After the annular grille plate 61 is rotated and fixed, the U-shaped plug block 616 can be directly squeezed and inserted into the positioning hole 93, and the two sides of the U-shaped plug block 616 are expanded and pressed against the positioning hole 93; when disassembling, the mounting block 617 is manually toggled to squeeze and compress the two sides of the U-shaped plug block 616, so as to unlock the annular grille plate 61, thereby facilitating rotation and removal.

[0035] like Figure 5 and Figure 6As shown, the inner ring of the annular mounting plate 9 is provided with a plurality of mounting bayonet holes 94 along the circumferential direction; the inner wall of the outer ring of the circular grille plate 62 is provided with a plurality of mounting blocks 622 corresponding to the mounting bayonet holes 94; the end of the mounting block 622 is provided with a mounting clamp 623, and when clamped, the mounting block 622 is clamped into the mounting bayonet hole 94, and the mounting clamp 623 is pressed against the inner wall of the inner ring of the annular mounting plate 9; the inner ring of the annular mounting plate 9 is also provided with a plurality of disassembly notches 95 along the circumferential direction. The mounting clamp 623 and the mounting bayonet hole 94 cooperate to facilitate the fixing and buckling of the circular grille plate 62 on the annular mounting plate 9, and the disassembly notches 95 facilitate the removal of the circular grille plate 62 by inserting the circular grille plate 62 by hand during disassembly, which is convenient for quick operation and also convenient for cleaning.

[0036] The advantage of the present invention is that the detachable grille assembly 6 can be disassembled for direct cleaning after being used for a period of time, so that debris and dust can be handled conveniently to ensure the normal use of the drum dryer. At the same time, a detachable inspection baffle 8 is provided to facilitate direct inspection at the inspection port 7 without disassembling the entire machine, thereby facilitating maintenance and repair.

[0037] 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.

[0038] 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.

[0039] 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 casing structure of a tumble dryer, characterized in that: The invention comprises a casing body (1), wherein a drum cavity (2) for mounting a drum is arranged inside the casing body (1); a ventilation installation opening (5) communicating with the drum cavity (2) is arranged on the rear plate (12) of the casing body (1); a grille assembly (6) is detachably connected to the ventilation installation opening (5); an inspection opening (7) is arranged on the bottom plate (13) of the casing body (1); an inspection baffle (8) is detachably connected to the inspection opening (7) on the casing body (1), and the inspection baffle (8) is used to close the inspection opening (7) when fixed.

2. The housing structure of the drum dryer according to claim 1, characterized in that: An ear plate (80) is provided on one side of the inspection baffle (8); a connecting hole (801) is provided on the ear plate (80); a screw hole (131) is provided on the base plate (13); a connecting screw passes through the connecting hole (801) and is threadedly connected to the screw hole (131), so that the inspection baffle (8) is fixedly connected to the base plate (13).

3. The housing structure of the drum dryer according to claim 2, characterized in that: The inspection baffle (8) is provided with a protrusion (81) having the same shape as the inspection opening (7), and a step surface (82) is formed between the protrusion (81) and the inspection baffle (8) along the outer periphery of the protrusion (81); when fixed, the protrusion (81) is snapped into the inspection opening (7), and the step surface (82) abuts against the bottom of the bottom plate (13).

4. The housing structure of the drum dryer according to claim 1, characterized in that: The grille assembly (6) comprises a circular grille plate (61) and a circular grille plate (62); the circular grille plate (61) and the circular grille plate (62) are respectively detachably connected to the rear plate (12); the outer ring of the circular grille plate (62) is connected to the inner ring of the circular grille plate (61); and the circular grille plate (62) and the circular grille plate (61) are combined to close the ventilation installation opening (5); a plurality of first grille holes (611) are arranged in a circumferential direction on the circular grille plate (61); and a plurality of second grille holes (621) are arranged in a transverse direction in the middle of the circular grille plate (62).

5. The casing structure of the drum dryer according to claim 4, characterized in that: It also includes an annular mounting plate (9) integrally formed with the rear plate (12); the outer ring of the annular mounting plate (9) is connected to the inner ring of the ventilation mounting opening (5); a plurality of ventilation holes (91) are arranged at intervals along the circumferential direction on the annular mounting plate (9) corresponding to the first grille hole (611); a plurality of snap-in holes (92) are arranged at intervals along the circumferential direction on the outer ring of the annular mounting plate (9); a plurality of snap-in recesses (612) are arranged on the inner wall of the circular grille plate (61) at positions corresponding to the snap-in holes (92); and each of the snap-in recesses (612) is provided with a connecting block (613) snap-fitted with the snap-in hole (92).

6. The casing structure of the drum dryer according to claim 5, characterized in that: Each of the clamping holes (92) comprises an insertion portion (921) and a clamping portion (922); the aperture width of the insertion portion (921) is greater than the aperture width of the clamping portion (922); an insertion clamp (614) is provided at the end of the connection clamp block (613); the width of the insertion clamp (614) is greater than the width of the connection clamp block (613), and a guiding inclined surface (615) for facilitating insertion is provided on the insertion clamp (614).

7. The casing structure of the drum dryer according to claim 5, characterized in that: A U-shaped plug block (616) is arranged on the outer wall of the circular grille plate (61); the U-shaped plug block (616) is arranged in a transverse direction, one end of the U-shaped plug block (616) is connected to the circular grille plate (61), and the other end of the U-shaped plug block (616) is bent to form a mounting block (617); a positioning hole (93) is arranged on the annular mounting plate (9) at a position corresponding to the U-shaped plug block (616); when plugged in, the two side plates of the U-shaped plug block (616) are pressed against the two sides of the positioning hole (93), and the mounting block (617) is pressed against the rear plate (12).

8. The casing structure of a tumble dryer according to claim 5, characterized in that: The inner ring of the annular mounting plate (9) is provided with a plurality of mounting slots (94) along the circumferential direction; the inner wall of the outer ring of the circular grille plate (62) is provided with a plurality of mounting blocks (622) corresponding to the positions of the mounting slots (94); the end of the mounting block (622) is provided with a mounting head (623); when clamped, the mounting block (622) is clamped into the mounting slot (94) and the mounting head (623) is pressed against the inner wall of the inner ring of the annular mounting plate (9); the inner ring of the annular mounting plate (9) is also provided with a plurality of disassembly notches (95) along the circumferential direction.

9. The casing structure of a drum dryer according to claim 4, characterized in that: A plurality of the first grille holes (611) are arranged at equal intervals along the circumferential direction on the annular grille plate (61), and the plurality of the first grille holes (611) are distributed in a spiral shape.

10. The casing structure of a drum dryer according to claim 4, characterized in that: The middle part of the circular grille plate (62) is a raised portion (620) that protrudes outward; a plurality of second grille holes (621) are arranged on the raised portion (620) at equal intervals in the horizontal direction, each second grille hole (621) is arranged vertically, and the length of the second grille hole (621) gradually increases from the left end to the middle, and gradually decreases from the middle to the right end, and the plurality of second grille holes (621) are arranged symmetrically.

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