A device for preserving and storing purple sweet potato custard mooncake filling

Abstract

This utility model discloses a preservation and storage device for purple sweet potato custard mooncake filling, including a refrigeration cabinet. Several storage boxes are arranged inside the refrigeration cabinet. A fixed frame is fixedly connected to the top of each storage box. Limiting plates are provided on both the left and right sides of the fixed frame. A cover plate is provided on the top of the fixed frame. Two second hinges are provided on the rear side of the cover plate. The cover plate is movably connected to the top of the fixed frame via the second hinges. Handle grooves are provided on both the cover plate and the fixed frame. A baffle is provided on the top of the cover plate, and the baffle is movably connected to the top of the adjacent limiting plate. The bottom of the baffle movably passes through the two handle grooves. This utility model's preservation and storage device for purple sweet potato custard mooncake filling not only limits the movement trajectory of the storage boxes but also presses and fixes the cover plate, thereby sealing the storage boxes, preventing odor transfer, and achieving good preservation, thus preventing the filling from spoiling.

Description

Technical Field

[0001] This utility model relates to the field of mooncake filling preservation technology, and in particular to a device for preserving and storing purple sweet potato custard mooncake filling. Background Technology

[0002] Mooncakes, a traditional Chinese seasonal food, have seen continuous market growth. With increasingly diverse consumer tastes and growing health awareness, innovative mooncake flavors are constantly emerging. Purple sweet potato and custard mooncakes, with their unique taste, captivating natural purple color, and "low-sugar and healthy" selling point, have become a popular new favorite in recent years. Custard is rich in protein, fat, and dairy products, while purple sweet potato is rich in carbohydrates, providing an excellent culture medium for microbial growth. Both purple sweet potato puree and custard filling have high moisture content, resulting in a high overall water activity, a major factor inducing microbial reproduction and Maillard reactions.

[0003] Mooncake filling preservation devices store different mooncake fillings together, which may cause flavors to mix between different fillings. This not only fails to preserve the fillings effectively but may even make them more prone to spoilage. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a device for preserving and storing purple sweet potato custard mooncake filling.

[0005] One of the objectives of this utility model is achieved through the following technical solution: A device for preserving and storing purple sweet potato custard mooncake filling includes a refrigerated cabinet. Several storage boxes are located inside the refrigerated cabinet. A fixed frame is fixedly connected to the top of each storage box. Limiting plates are located on both the left and right sides of the fixed frame. A cover plate is located on the top of the fixed frame. Two second hinges are located on the rear side of the cover plate. The cover plate is movably connected to the top of the fixed frame via the second hinges. Handle slots are provided on both the cover plate and the fixed frame. A baffle plate is located on the top of the cover plate and is movably connected to the top of the adjacent limiting plates. The bottom of the baffle plate movably passes through the two handle slots.

[0006] Furthermore, a controller is installed on the right side of the refrigeration equipment cabinet, and a display screen and several buttons are installed on the right side of the controller.

[0007] Furthermore, the front side of the refrigeration equipment cabinet is provided with a cabinet door, and two first hinges are provided on the left side of the cabinet door. The cabinet door is movably connected to the front side of the refrigeration equipment cabinet through the first hinges.

[0008] Furthermore, a handle is provided on the front side of the cabinet door. The handle is located near the right side wall of the cabinet door. A first connecting plate is provided at the top and bottom of the handle. The first connecting plate is located near the left side wall of the handle. The first connecting plate is fixedly connected to the front side of the cabinet door. A first pivot is provided on the inner side of the handle. Both ends of the first pivot are fixedly inserted through the handle. Both ends of the first pivot are rotatably connected to the adjacent first connecting plate.

[0009] Furthermore, a movable plate is provided on the right side of the refrigeration equipment cabinet. The movable plate is close to the front side of the refrigeration equipment cabinet. A second connecting plate is provided at the top and bottom of the movable plate. The second connecting plate is located near the rear side wall of the movable plate and is fixedly connected to the right side wall of the refrigeration equipment cabinet. A second rotating shaft is fixedly inserted through the movable plate. The two ends of the second rotating shaft are respectively rotatably connected to the adjacent second connecting plate. A spring is fixedly connected to the right side of the movable plate. The rear end of the spring is fixedly connected to the right side wall of the refrigeration equipment cabinet. A stop block is fixedly connected to the left side of the movable plate. The stop block is located near the front side wall of the movable plate. The cross-section of the stop block is a right trapezoid. The rear side of the stop block is in contact with the handle.

[0010] The limiting plate has a U-shaped cross-section and is fixedly connected to the inner wall of the refrigeration equipment cabinet. The fixing frame and the cover plate are both in contact with the inner side of the limiting plate.

[0011] Furthermore, the baffle has an L-shaped cross-section, and a third connecting plate is provided on both the front and rear sides of the baffle. The third connecting plate is located near the left side wall of the baffle and is fixedly connected to the top of the adjacent limiting plate. A third rotating shaft is fixedly provided through the baffle, and the two ends of the third rotating shaft are rotatably connected to the adjacent third connecting plate respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides a fresh storage device for purple sweet potato custard mooncake filling. The limiting plate can not only limit the movement trajectory of the storage box, but also press and fix the cover plate, thereby sealing the storage box, preventing cross-contamination of odors, playing a good preservation role, and preventing the filling from spoiling. 2. This utility model provides a fresh storage device for purple sweet potato custard mooncake filling. During use, the handle groove can be used in conjunction with the baffle to block and fix the storage box, or it can be used alone to transfer the storage box and flip the cover. It has multiple functions and is more convenient to use. 3. This utility model provides a storage device for preserving purple sweet potato custard mooncake filling. By flipping the handle, the handle can be flipped and stored so that it fits snugly against the back of the block. At this time, the handle can be stored and fixed, and the cabinet door can also be fixed. This achieves two goals at once. After the handle is stored, it prevents unauthorized personnel from opening the cabinet door, thereby preventing the filling stored inside from spoiling due to insufficient preservation temperature. Attached Figure Description

[0013] Figure 1 This is a frontal perspective view of the present invention; Figure 2 This is a front perspective view of the handle component of this utility model; Figure 3 This is a left perspective view of the movable plate of the component of this utility model; Figure 4 This is a front perspective view of the refrigeration equipment cabinet of this utility model component; Figure 5 This is a frontal perspective view of the limiting plate of the component of this utility model; Figure 6 This is a front perspective view of the cover plate of the component of this utility model; Figure 7 This is a rear perspective view of the cover plate of the component of this utility model; Figure 8 This is a front perspective view of the fixing frame of the component of this utility model; Figure 9 This is a frontal perspective view of the baffle plate of this utility model.

[0014] Numbered in the diagram: 1. Refrigeration equipment cabinet; 2. Controller; 3. Cabinet door; 4. First hinge; 5. Handle; 6. First connecting plate; 7. First pivot; 8. Movable plate; 9. Stop block; 10. Spring; 11. Second connecting plate; 12. Second pivot; 13. Storage box; 14. Fixing frame; 15. Cover plate; 16. Handle groove; 17. Second hinge; 18. Limiting plate; 19. Baffle; 20. Third connecting plate; 21. Third pivot. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0016] Please see Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 A device for preserving and storing purple sweet potato custard mooncake filling includes a refrigerated cabinet 1. A controller 2 is installed on the right side of the refrigerated cabinet 1. A display screen and several buttons are installed on the right side of the controller 2. A cabinet door 3 is provided on the front side of the refrigerated cabinet 1. Two first hinges 4 are provided on the left side of the cabinet door 3. The cabinet door 3 is movably connected to the front side of the refrigerated cabinet 1 through the first hinges 4. Several storage boxes 13 are provided on the inner side of the refrigerated cabinet 1. A fixed frame 14 is fixedly connected to the top of the storage box 13. Limiting plates 18 are provided on both the left and right sides of the fixed frame 14. The cross-section of the limiting plate 18 is U-shaped. The limiting plate 18 is fixedly connected to the inner wall of the refrigerated cabinet 1. A cover plate 15 is provided on the top of the fixed frame 14. The fixed frame 14 and the cover plate 15 are both in contact with the inner side of the limiting plate 18. Two second hinges 17 are provided on the rear side of the cover plate 15. The cover plate 15 is movably connected to the top of the fixed frame 14 through the second hinges 17.

[0017] Both the cover plate 15 and the fixing frame 14 are provided with handle grooves 16. The top of the cover plate 15 is provided with a baffle 19, which is movably connected to the top of the adjacent limiting plate 18. The bottom of the baffle 19 movably passes through the two handle grooves 16. The cross-section of the baffle 19 is L-shaped. The front and rear sides of the baffle 19 are provided with third connecting plates 20. The third connecting plates 20 are located near the left side wall of the baffle 19 and are fixedly connected to the top of the adjacent limiting plate 18. A third rotating shaft 21 is fixedly passed through the baffle 19, and the two ends of the third rotating shaft 21 are rotatably connected to the adjacent third connecting plates 20 respectively. In the above embodiment, when it is necessary to remove the storage box 13, the palm passes through the bottom of the handle groove 16 on the fixed frame 14 and through the handle groove 16 on the cover plate 15. The fingers will push the baffle 19 to flip upward. The baffle 19 flips upward around the third pivot 21 and flips away from the handle groove 16, thereby releasing the fixed storage box 13. Then, the storage box 13 is pulled through the handle groove 16 and moves away from the limiting plate 18, thereby removing the storage box 13 from the refrigerator cabinet 1. After that, the cover plate 15 is flipped up through the handle groove 16 on the cover plate 15 to take out and put in the filling inside the storage box 13.

[0018] When it is necessary to place the storage box 13 inside the refrigeration equipment cabinet 1, first flip the baffle 19 upwards, then move the storage box 13. The storage box 13 drives the fixing frame 14 and the cover plate 15 to move inside the limiting plate 18 until the handle groove 16 is directly below the baffle 19. At this time, release the force of the baffle 19, and the baffle 19 flips down under the action of gravity. The baffle 19 is inserted into the inner cavity of the two handle grooves 16, and the baffle 19 blocks and fixes the storage box 13.

[0019] The limiting plate 18 can not only limit the movement trajectory of the storage box 13, but also press and fix the cover plate 15, thereby sealing the storage box 13, preventing odor from mixing, playing a good role in preservation, and preventing the filling from spoiling.

[0020] During use, the handle groove 16 can be used in conjunction with the baffle 19 to block and fix the storage box 13, or it can be used alone to transfer the storage box 13 and the flip cover 15. It has multiple functions and is more convenient to use. Example

[0021] Please see Figure 1 , Figure 2 and Figure 3 A handle 5 is provided on the front side of the cabinet door 3. The handle 5 is located near the right side wall of the cabinet door 3. A first connecting plate 6 is provided at the top and bottom of the handle 5. The first connecting plate 6 is located near the left side wall of the handle 5. The first connecting plate 6 is fixedly connected to the front side of the cabinet door 3. A first rotating shaft 7 is provided on the inner side of the handle 5. Both ends of the first rotating shaft 7 are fixedly inserted through the handle 5. Both ends of the first rotating shaft 7 are rotatably connected to the adjacent first connecting plate 6.

[0022] A movable plate 8 is provided on the right side of the refrigeration equipment cabinet 1. The movable plate 8 is close to the front side of the refrigeration equipment cabinet 1. The top and bottom of the movable plate 8 are provided with second connecting plates 11. The second connecting plates 11 are close to the rear side wall of the movable plate 8 and are fixedly connected to the right side wall of the refrigeration equipment cabinet 1. A second rotating shaft 12 is fixedly passed through the movable plate 8. The two ends of the second rotating shaft 12 are respectively rotatably connected to the adjacent second connecting plates 11. A spring 10 is fixedly connected to the right side of the movable plate 8. The rear end of the spring 10 is fixedly connected to the right side wall of the refrigeration equipment cabinet 1. A stop block 9 is fixedly connected to the left side of the movable plate 8. The stop block 9 is close to the front side wall of the movable plate 8. The cross-section of the stop block 9 is a right trapezoid. The rear side of the stop block 9 is in contact with the handle 5.

[0023] In the above embodiment, when it is necessary to open the cabinet door 3 to store or retrieve fillings, the movable plate 8 is moved to the right. The movable plate 8 rotates around the second pivot 12, and at the same time, the spring 10 deforms. The movable plate 8 drives the stop block 9 to rotate away from the handle 5, thereby releasing the fixation of the cabinet door 3. Then, the handle 5 is rotated forward. The handle 5 rotates around the first pivot 7, and then the cabinet door 3 is pulled by the handle 5. After that, the force on the movable plate 8 is released, and the movable plate 8 returns to its original position under the elastic action of the spring 10. At this time, the cabinet door 3 is opened, and the fillings can be stored or retrieved.

[0024] When it is necessary to close the cabinet door 3, push the cabinet door 3 with the handle 5. The cabinet door 3 touches the stop block 9, and the cabinet door 3 moves on the inclined surface of the stop block 9. The cabinet door 3 pushes the stop block 9, and the stop block 9 causes the movable plate 8 to flip. The movable plate 8 flips around the second pivot 12, and at the same time, the spring 10 deforms until the cabinet door 3 flips to fit against the front side of the refrigeration equipment cabinet 1. At this time, the stop block 9 moves away from the refrigeration equipment cabinet 1, and the movable plate 8 and the stop block 9 return to their original positions under the elastic action of the spring 10. The handle 5 is flipped to the right and moves on the inclined surface of the stop block 9. The handle 5 pushes the stop block 9, and the stop block 9 causes the movable plate 8 to flip. The movable plate 8 flips around the second pivot 12, and at the same time the spring 10 deforms until the handle 5 flips to fit against the front side of the cabinet door 3. At this time, the stop block 9 moves away from the handle 5. The movable plate 8 and the stop block 9 return to their original positions under the elastic action of the spring 10. The stop block 9 blocks the handle 5 and fixes the handle 5 and the cabinet door 3 together.

[0025] The device flips the handle 5 so that it fits snugly against the back of the block 9. This not only secures the handle 5 but also fixes the cabinet door 3, achieving two goals at once. After the handle 5 is tucked away, unauthorized personnel are prevented from opening the cabinet door 3, thus preventing the fillings stored inside from spoiling due to insufficient preservation temperature.

[0026] Working principle: This utility model is a device for preserving and storing purple sweet potato custard mooncake filling. During use, when it is necessary to open the cabinet door 3 to store or retrieve the filling, the movable plate 8 is moved to the right. The movable plate 8 rotates around the second pivot 12, and at the same time, the spring 10 deforms. The movable plate 8 drives the stop block 9 to rotate away from the handle 5, thereby releasing the fixation of the cabinet door 3. Then, the handle 5 is rotated forward, and the handle 5 rotates around the first pivot 7. Then, the cabinet door 3 is pulled by the handle 5. After that, the force on the movable plate 8 is released, and the movable plate 8 returns to its original position under the elastic action of the spring 10. At this time, the cabinet door 3 is opened, and the filling can be stored or retrieved.

[0027] When it is necessary to remove the storage box 13, the palm passes through the bottom of the handle groove 16 on the fixed frame 14 and through the handle groove 16 on the cover plate 15. The fingers will push the baffle 19 to flip upward. The baffle 19 flips upward around the third pivot 21 and flips away from the handle groove 16, thereby releasing the fixed storage box 13. Then, the storage box 13 is pulled through the handle groove 16 and moved away from the limit plate 18, thereby removing the storage box 13 from the refrigerator cabinet 1. After that, the cover plate 15 is flipped up through the handle groove 16 on the cover plate 15 to take out and put in the filling inside the storage box 13.

[0028] When it is necessary to place the storage box 13 inside the refrigeration equipment cabinet 1, first flip the baffle 19 upwards, then move the storage box 13. The storage box 13 drives the fixing frame 14 and the cover plate 15 to move inside the limiting plate 18 until the handle groove 16 is directly below the baffle 19. At this time, release the force of the baffle 19, and the baffle 19 flips down under the action of gravity. The baffle 19 is inserted into the inner cavity of the two handle grooves 16, and the baffle 19 blocks and fixes the storage box 13.

[0029] When it is necessary to close the cabinet door 3, push the cabinet door 3 with the handle 5. The cabinet door 3 touches the stop block 9, and the cabinet door 3 moves on the inclined surface of the stop block 9. The cabinet door 3 pushes the stop block 9, and the stop block 9 causes the movable plate 8 to flip. The movable plate 8 flips around the second pivot 12, and at the same time, the spring 10 deforms until the cabinet door 3 flips to fit against the front side of the refrigeration equipment cabinet 1. At this time, the stop block 9 moves away from the refrigeration equipment cabinet 1, and the movable plate 8 and the stop block 9 return to their original positions under the elastic action of the spring 10. The handle 5 is flipped to the right and moves on the inclined surface of the stop block 9. The handle 5 pushes the stop block 9, and the stop block 9 causes the movable plate 8 to flip. The movable plate 8 flips around the second pivot 12, and at the same time the spring 10 deforms until the handle 5 flips to fit against the front side of the cabinet door 3. At this time, the stop block 9 moves away from the handle 5. The movable plate 8 and the stop block 9 return to their original positions under the elastic action of the spring 10. The stop block 9 blocks the handle 5 and fixes the handle 5 and the cabinet door 3 together.

[0030] The limiting plate 18 can not only limit the movement trajectory of the storage box 13, but also press and fix the cover plate 15, thereby sealing the storage box 13, preventing odor from mixing, playing a good role in preservation, and preventing the filling from spoiling.

[0031] During use, the handle groove 16 can be used in conjunction with the baffle 19 to block and fix the storage box 13, or it can be used alone to transfer the storage box 13 and the flip cover 15. It has multiple functions and is more convenient to use.

[0032] The device flips the handle 5 so that it fits snugly against the back of the block 9. This not only secures the handle 5 but also fixes the cabinet door 3, achieving two goals at once. After the handle 5 is tucked away, unauthorized personnel are prevented from opening the cabinet door 3, thus preventing the fillings stored inside from spoiling due to insufficient preservation temperature.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for preserving and storing purple sweet potato custard mooncake filling, comprising a refrigeration unit (1), characterized in that: The inner side of the refrigeration equipment cabinet (1) is provided with several storage boxes (13). The top of the storage box (13) is fixedly connected to a fixed frame (14). The left and right sides of the fixed frame (14) are provided with limiting plates (18). The top of the fixed frame (14) is provided with a cover plate (15). The back side of the cover plate (15) is provided with two second hinges (17). The cover plate (15) is movably connected to the top of the fixed frame (14) through the second hinges (17). Both the cover plate (15) and the fixed frame (14) are provided with handle grooves (16). The top of the cover plate (15) is provided with a baffle (19). The baffle (19) is movably connected to the top of the adjacent limiting plate (18). The bottom of the baffle (19) movably passes through the two handle grooves (16).

2. The device for preserving and storing purple sweet potato custard mooncake filling as described in claim 1, characterized in that: A controller (2) is installed on the right side of the refrigeration equipment cabinet (1), and a display screen and several buttons are installed on the right side of the controller (2).

3. The device for preserving and storing purple sweet potato custard mooncake filling as described in claim 1, characterized in that: The front side of the refrigeration equipment cabinet (1) is provided with a cabinet door (3), and two first hinges (4) are provided on the left side of the cabinet door (3). The cabinet door (3) is movably connected to the front side of the refrigeration equipment cabinet (1) through the first hinges (4).

4. The device for preserving and storing purple sweet potato custard mooncake filling as described in claim 3, characterized in that: A handle (5) is provided on the front side of the cabinet door (3). The handle (5) is located near the right side wall of the cabinet door (3). A first connecting plate (6) is provided at the top and bottom of the handle (5). The first connecting plate (6) is located near the left side wall of the handle (5). The first connecting plate (6) is fixedly connected to the front side of the cabinet door (3). A first rotating shaft (7) is provided on the inner side of the handle (5). Both ends of the first rotating shaft (7) are fixedly inserted through the handle (5). Both ends of the first rotating shaft (7) are rotatably connected to the adjacent first connecting plate (6).

5. The device for preserving and storing purple sweet potato custard mooncake filling as described in claim 4, characterized in that: The right side of the refrigeration equipment cabinet (1) is provided with a movable plate (8). The movable plate (8) is close to the front side of the refrigeration equipment cabinet (1). The top and bottom of the movable plate (8) are provided with second connecting plates (11). The second connecting plates (11) are close to the rear side wall of the movable plate (8). The second connecting plates (11) are fixedly connected to the right side wall of the refrigeration equipment cabinet (1). A second rotating shaft (12) is fixedly passed through the movable plate (8). The two ends of the second rotating shaft (12) are rotatably connected to the adjacent second connecting plates (11). A spring (10) is fixedly connected to the right side of the movable plate (8). The rear end of the spring (10) is fixedly connected to the right side wall of the refrigeration equipment cabinet (1). A stop block (9) is fixedly connected to the left side of the movable plate (8). The stop block (9) is close to the front side wall of the movable plate (8). The cross-section of the stop block (9) is a right trapezoid. The rear side of the stop block (9) is in contact with the handle (5).

6. The device for preserving and storing purple sweet potato custard mooncake filling as described in claim 1, characterized in that: The limiting plate (18) has a U-shaped cross section and is fixedly connected to the inner wall of the refrigeration equipment cabinet (1). The fixing frame (14) and the cover plate (15) are both in contact with the inner side of the limiting plate (18).

7. The device for preserving and storing purple sweet potato custard mooncake filling as described in claim 1, characterized in that: The baffle (19) has an L-shaped cross section. The baffle (19) is provided with a third connecting plate (20) on both the front and rear sides. The third connecting plate (20) is located near the left side wall of the baffle (19). The third connecting plate (20) is fixedly connected to the top of the adjacent limiting plate (18). A third rotating shaft (21) is fixedly provided through the baffle (19). The two ends of the third rotating shaft (21) are rotatably connected to the adjacent third connecting plate (20) respectively.

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