A pharmaceutical raw material baking device

Abstract

The utility model discloses a kind of raw materials baking device for pharmacy, it is related to baking device technical field, including baking mechanism, the baking mechanism includes baking oven.The utility model is provided with swing mechanism, in swing mechanism, rotating rod is movably connected with the back of baking oven through bearing, its front end is inserted into cavity and fixed swing frame, and the net frame is assembled in swing frame by hooking mode, the swing mechanism connected with the rear side of rotating rod drives rotating rod reciprocating rotation around bearing, drives swing frame and internal net frame to synchronously swing, so that raw material in net frame continuously turns over in baking process, simultaneously, the fixed assembly on the top of swing frame inner wall is positioned and fixed to net frame, prevent net frame displacement or drop off when swinging, solve the problem that the raw material in the baking cavity of existing drying machine is in stationary piling state in actual application process, lack effective turning or stirring mechanism, reduce drying effect.

Description

Technical Field

[0001] This utility model relates to the field of baking equipment technology, specifically a baking device for pharmaceutical raw materials. Background Technology

[0002] In the production process of traditional Chinese medicine (TCM) preparations, the drying of raw materials (including Chinese medicinal herbs, processed Chinese medicinal herbs, and semi-finished TCM products) is a crucial step in ensuring product quality and storage stability. The core objectives of this process are: firstly, to remove excess moisture from the raw materials, reducing the risk of microbial growth; secondly, to inhibit the catalytic activity of active enzymes within the raw materials, preventing degradation reactions such as hydrolysis and oxidation of effective active ingredients (e.g., saponins, flavonoids, alkaloids); and thirdly, to reduce the volume and weight of the raw materials, facilitating subsequent pulverization, mixing, and long-term storage. Currently, the industry generally uses dryers to dry raw materials for traditional Chinese medicine preparations, achieving low-temperature drying by controlling the baking temperature. However, existing dryers have significant technical defects in practical applications: the raw materials inside the baking chamber are mostly in a static stacked state, lacking an effective turning or stirring mechanism, which reduces the drying effect. Specifically, on the one hand, there is a significant difference in heat transfer efficiency between the inside and the surface of the raw material stack. The surface raw materials are prone to over-baking, while the internal raw materials are difficult to reach the preset drying standard due to uneven heating, requiring extended baking time to ensure the overall drying effect, thus affecting production efficiency. On the other hand, statically stacked raw materials are prone to forming damp and hot dead zones due to local moisture accumulation, which not only leads to mold and discoloration of some raw materials, but also further aggravates the loss of effective components, making it difficult to meet the stringent requirements of traditional Chinese medicine production for uniform drying and retention rate of effective components. Utility Model Content

[0003] To address the problems mentioned in the background art, the purpose of this utility model is to provide a pharmaceutical raw material baking device that has the advantage of auxiliary drying. It solves the problem that in the actual application of existing dryers, the raw materials in the baking chamber are mostly in a static stacked state, lacking an effective turning or stirring mechanism, which reduces the drying effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pharmaceutical raw material baking device, comprising a baking mechanism, the baking mechanism including a baking oven, an electric heating plate fixedly installed at the bottom inside the baking oven, a sealing door movably connected to the front of the baking oven via a hinge, and a swing mechanism, the swing mechanism including a rotating rod, the rotating rod being movably connected to the back of the baking oven via a bearing, three rotating rods being arranged at equal intervals, the front end of the rotating rod being located inside the baking oven, a swing frame being fixedly connected to the front end of the rotating rod, a holding wire mesh frame being hooked inside the swing frame, a shaking mechanism being fixedly connected to the rear side of the surface of the rotating rod, and fixing components being fixedly connected to the front and rear sides of the top left side and the front and rear sides of the top right side of the inner wall of the swing frame.

[0005] In a preferred embodiment of this invention, the shaking mechanism includes gears, which are fixedly connected to the rear side of the rotating rod surface. The right sides of the three gear surfaces are meshed with the same rack. A sliding limiting component is fixedly connected to the right side of the rack, and a driving component is fixedly connected to the top of the back side of the rack.

[0006] As a preferred embodiment of this utility model, the fixing component includes a connecting block, which is fixedly connected to the front and rear sides of the top left side and the front and rear sides of the top right side of the inner wall of the swing frame. The connecting block is internally threaded with a fixing screw, the top of the fixing screw is fixedly connected with a rotating handle, and the bottom of the fixing screw is fixedly connected with a pressing plate, which is used to press down the holding frame.

[0007] As a preferred embodiment of this invention, the sliding limiting component includes a sliding strip, which is fixedly connected to the right side of the rack. A slide rail is slidably connected to the surface of the sliding strip, and the front side of the slide rail is fixedly connected to the back side of the baking oven.

[0008] In a preferred embodiment of this invention, the drive assembly includes a first shaft, which is fixedly connected to the top of the back of the rack. A connecting rod is movably connected to the surface of the first shaft, and a second shaft is movably connected to the other end of the connecting rod. A cam is fixedly connected to the front end of the second shaft. A motor is fixedly installed on the top of the baking oven, and the output end of the motor is fixedly connected to the front of the cam.

[0009] As a preferred embodiment of this invention, a protective pad is attached to the bottom of the extrusion plate, and the protective pad is made of silicone rubber.

[0010] As a preferred embodiment of this invention, the top of the holding frame is movably connected to an anti-slip mesh plate via a hinge.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model incorporates a swing mechanism. In this mechanism, a rotating rod is movably connected to the back of the baking oven via a bearing. Its front end extends into the cavity and fixes the swing frame. The holding wire mesh frame is hooked and mounted inside the swing frame. A swaying mechanism connected to the rear of the rotating rod drives the rotating rod to reciprocate around the bearing, causing the swing frame and the internal holding wire mesh frame to swing synchronously. This allows the raw materials inside the wire mesh frame to continuously tumble during baking. Simultaneously, a fixing component on the top of the inner wall of the swing frame limits and fixes the holding wire mesh frame, preventing it from shifting or falling off during swinging. This solves the problem in existing dryers where the raw materials inside the baking cavity are mostly in a static, stacked state, lacking an effective turning or stirring mechanism, thus reducing the drying effect. This invention achieves an auxiliary drying effect.

[0012] 2. This utility model, by setting up a shaking mechanism, uses a rack to drive three gears, ensuring that the rotation angle and speed of the three rotating rods are completely consistent, avoiding the swaying imbalance caused by asynchronous transmission of multiple rods, and further improving the uniformity of raw material turning. The drive component transmits power through mechanical linkage, and the power output is stable. By adjusting the motor speed, the rotation speed of the cam can be controlled, thereby changing the reciprocating frequency of the rack and the rotation amplitude of the gears, realizing flexible adjustment of the swaying frequency, and adapting to pharmaceutical raw materials with different particle sizes and moisture content.

[0013] 3. This utility model, by setting a fixing component and using a screw-driven compression fixing method, can adjust the downward pressure of the extrusion plate according to the thickness, ensuring that the holding mesh frames of different specifications can be tightly fixed, preventing the holding mesh frames from shifting or falling off during the swinging process. The rotating handle design requires no additional tools, and the fixing or disassembly operation can be completed quickly by manpower, improving the efficiency of raw material loading and unloading and reducing equipment downtime. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective; Figure 3 This is a schematic diagram of the exploded structure of the shaking mechanism of this utility model; Figure 4 This is a schematic diagram of the exploded structure of the fixing component of this utility model.

[0015] In the diagram: 1. Baking mechanism; 101. Baking oven; 102. Electric heating plate; 103. Sealed door; 2. Swinging mechanism; 21. Rotating rod; 22. Swinging frame; 23. Container frame; 3. Shaking mechanism; 31. Gear; 32. Rack; 33. Sliding limit assembly; 331. Sliding bar; 332. Slide rail; 34. Drive assembly; 341. First shaft; 342. Connecting rod; 343. Second shaft; 344. Cam; 345. Motor; 4. Fixing assembly; 41. Connecting block; 42. Fixing screw; 43. Rotating handle; 44. Extrusion plate; 5. Protective pad; 6. Anti-slip mesh plate. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0020] Example 1 Reference Figure 1-4This is the first embodiment of the present invention, which provides a pharmaceutical raw material baking device, including a baking mechanism 1, a baking oven 101, an electric heating plate 102 fixedly installed at the bottom inside the baking oven 101, a sealing door 103 movably connected to the front of the baking oven 101 via a hinge, and a swing mechanism 2, which includes a rotating rod 21, the rotating rod 21 being movably connected to the back of the baking oven 101 via a bearing, three rotating rods 21 being provided and evenly distributed, the front end of the rotating rod 21 being located inside the baking oven 101, a swing frame 22 being fixedly connected to the front end of the rotating rod 21, a holding wire mesh frame 23 being hooked inside the swing frame 22, a rocking mechanism 3 being fixedly connected to the rear side of the surface of the rotating rod 21, and fixing components 4 being fixedly connected to the front and rear sides of the top left side and the top right side of the inner wall of the swing frame 22.

[0021] Specifically, by setting up the swing mechanism 2, the raw materials are dynamically turned over, avoiding local accumulation of raw materials that leads to uneven heating, improving baking uniformity, and reducing the situation where some raw materials are over-dried and some raw materials do not meet the drying standards. The multi-rotating rod 21 design expands the baking coverage area, can process multiple groups of raw materials at the same time, and improves the baking efficiency per unit time.

[0022] Furthermore, the rotating rod 21 is movably connected to the back of the baking oven 101 via a bearing, and its front end extends into the cavity to fix the swing frame 22. The holding wire mesh frame 23 is assembled in the swing frame 22 by hooking. The rocking mechanism 3 connected to the rear of the rotating rod 21 drives the rotating rod 21 to rotate back and forth around the bearing, causing the swing frame 22 and the internal holding wire mesh frame 23 to swing synchronously, so that the raw materials in the wire mesh frame continue to turn during the baking process. At the same time, the fixing component 4 on the top of the inner wall of the swing frame 22 limits and fixes the holding wire mesh frame 23 to prevent the wire mesh frame from shifting or falling off during the swing.

[0023] Example 2 In the second embodiment of this utility model, the shaking mechanism 3 includes gears 31, which are fixedly connected to the rear side of the surface of the rotating rod 21. The right side of the surfaces of the three gears 31 are meshed with the same rack 32. The right side of the rack 32 is fixedly connected to a sliding limit component 33, and the top of the back of the rack 32 is fixedly connected to a drive component 34.

[0024] Specifically, by setting up a shaking mechanism 3, the same rack 32 drives three gears 31 to ensure that the rotation angle and speed of the three rotating rods 21 are completely consistent, avoiding the swaying imbalance caused by the asynchronous transmission of multiple rods, and further improving the uniformity of raw material turning. The drive component 34 transmits power through mechanical linkage, and the power output is stable. By adjusting the speed of the motor 345, the rotation speed of the cam 344 can be controlled, thereby changing the reciprocating frequency of the rack 32 and the rotation amplitude of the gears 31, realizing flexible adjustment of the swaying frequency to adapt to pharmaceutical raw materials with different particle sizes and moisture content.

[0025] Furthermore, the three gears 31 are respectively fixed to the rear side of the three rotating rods 21, and all mesh with the right side of the same rack 32, forming a transmission structure of rack 32 and multiple gears 31. After the motor 345 in the drive assembly 34 starts, it drives the cam 344 to rotate. The cam 344 pulls the connecting rod 342 through the second shaft 343. The connecting rod 342 then drives the rack 32 to move back and forth in the horizontal direction through the first shaft 341. When the rack 32 moves back and forth, it synchronously meshes and drives the three gears 31 to rotate alternately in the forward and reverse directions. The gears 31 then drive the rotating rods 21 to rotate back and forth, finally realizing the swinging action of the swing frame 22.

[0026] Example 3 In the third embodiment of this utility model, the fixing component 4 includes a connecting block 41, which is fixedly connected to the front and rear sides of the top left side and the front and rear sides of the top right side of the inner wall of the swing frame 22. The connecting block 41 is internally threaded with a fixing screw 42, the top of the fixing screw 42 is fixedly connected with a rotating handle 43, and the bottom of the fixing screw 42 is fixedly connected with a pressing plate 44, which is used to press down the holding mesh frame 23.

[0027] Specifically, by setting the fixing component 4 and using the screw drive compression fixing method, the downward pressure of the extrusion plate 44 can be adjusted according to the thickness to ensure that the holding mesh frame 23 of different specifications can be tightly fixed, preventing the holding mesh frame 23 from moving or falling off during the swinging process. The rotating handle 43 is designed to require no additional tools, and the fixing or disassembly operation can be completed quickly by manpower, improving the efficiency of raw material loading and unloading and reducing equipment downtime.

[0028] Furthermore, the connecting block 41 is pre-fixed at the four corners of the top of the inner wall of the swing frame 22 to provide an installation base for the fixing screw 42. After the holding frame 23 is hooked into the swing frame 22, the rotating handle 43 is turned to drive the fixing screw 42 to move downward in the threaded hole of the connecting block 41. The pressing plate 44 at the bottom of the screw moves downward accordingly until the pressing plate 44 is tightly attached to the top edge of the holding frame 23. The pressing plate 44 presses the holding frame 23 into the swing frame 22 through pressure, thereby fixing the frame. If the frame needs to be removed, the rotating handle 43 is turned in the opposite direction to move the pressing plate 44 upward.

[0029] Working principle: In use, open the sealed door 103 on the front of the baking oven 101, which is connected by a hinge, to expose the swing frame 22 inside the cavity. Flip up the anti-slip mesh plate 6, which is connected by a hinge at the top of the holding mesh frame 23, and pour the pharmaceutical raw materials to be baked into the holding mesh frame 23. After pouring, close the anti-slip mesh plate 6 downwards to prevent the raw materials from jumping out from the top during subsequent swinging. Assemble the holding mesh frame 23 containing the raw materials into the swing frame 22 by hooking it. Rotate the rotating handle 43 on the four corner connecting blocks 41 at the top of the inner wall of the swing frame 22 to drive the fixing screw 42 to move downwards in the threaded hole of the connecting block 41, so that the extrusion plate 44 with the silicone rubber protective pad 5 attached to the bottom of the screw is pressed down until the protective pad 5 is tightly attached to the top edge of the holding mesh frame 23, thus completing the mesh frame fixing and preventing the raw materials from jumping out during swinging. After repositioning and fixing, the sealing door 103 is closed, forming a closed space in the baking oven 101, providing a stable temperature environment for subsequent baking. The electric heating plate 102 at the bottom of the baking oven 101 is activated. After being powered on, the electric heating plate 102 releases a low-temperature heat source, and the heat is evenly diffused within the closed cavity of the baking oven 101, starting to heat and bake the raw materials in the wire mesh frame 23. Simultaneously, the motor 345 is started. The output end of the motor 345 drives the cam 344 to rotate around the central axis. The second shaft 343 on the edge of the cam 344 rotates with the cam 344, pulling the first shaft 341 through the connecting rod 342, which in turn drives the rack 32 to move back and forth in the horizontal direction. The sliding bar 331 fixed on the right side of the rack 32 moves synchronously along the slide rail 332 on the back of the baking oven 101. The rack 32 slides back and forth, restricting its movement to only the horizontal direction. This ensures that the rack 32 is always precisely engaged with the three gears 31 meshing on the right side, preventing disengagement. As the rack 32 reciprocates, it synchronously meshes and drives the three gears 31, each fixed to the rear of the rotating rod 21, to alternately rotate in both directions. The gears 31 drive the rotating rod 21 to rotate around the bearing, causing the swing frame 22 fixed at the front end of the rotating rod 21 and the internal holding mesh frame 23 to swing synchronously. This achieves continuous turning of the raw materials during the baking process. The baking process can be adjusted according to the particle size and moisture requirements of the raw materials. By adjusting the speed of the motor 345, the rotation speed of the cam 344 can be changed. The change in the speed of the cam 344 alters the reciprocating frequency of the connecting rod 342 pulling the rack 32, thereby adjusting the rotation amplitude of the gears 31 and the rotation of the rotating rod. The 21 swing frequency adapts to the turning requirements of different raw materials. If the baking temperature needs to be adjusted, the power supply of the electric heating plate 102 can be adjusted to change the heat release intensity, ensuring that the temperature inside the baking oven 101 is maintained within the range that meets the drying standards for pharmaceutical raw materials. After the raw materials reach the drying standards, the electric heating plate 102 and motor 345 are turned off to stop the baking and swinging action. Let it stand for a period of time to allow the temperature inside the baking oven 101 to drop to room temperature to avoid burns from high temperature when taking it out. Open the sealing door 103, rotate the rotating handle 43 in the opposite direction to drive the fixing screw 42 to move upward, so that the extrusion plate 44 is separated from the holding wire mesh frame 23. Release the wire mesh frame fixing, take the holding wire mesh frame 23 out of the swing frame 22, open the anti-slip mesh plate 6, pour out the dried raw materials, and complete the entire baking process.

[0030] In summary: By setting up the swing mechanism 2, in which the rotating rod 21 is movably connected to the back of the baking oven 101 via a bearing, and its front end extends into the cavity to fix the swing frame 22, the holding wire mesh frame 23 is assembled in the swing frame 22 by hooking, and the rocking mechanism 3 connected to the rear of the rotating rod 21 drives the rotating rod 21 to rotate back and forth around the bearing, causing the swing frame 22 and the internal holding wire mesh frame 23 to swing synchronously, so that the raw materials in the wire mesh frame are continuously turned over during the baking process. At the same time, the fixing component 4 on the top of the inner wall of the swing frame 22 limits and fixes the holding wire mesh frame 23 to prevent the wire mesh frame from shifting or falling off during the swing. This solves the problem that in the actual application of existing dryers, the raw materials in the baking cavity are mostly in a static stacked state, lacking an effective turning or stirring mechanism, which reduces the drying effect, and achieves the effect of auxiliary drying.

[0031] The motors, screws, gears, and racks used in this application can be additionally equipped with protective measures that are common knowledge in this technical field under different usage environments. These measures include, but are not limited to, the following: protective covers for equipment protection, dustproof nets for equipment dust protection, and sealing components or waterproof coatings for equipment waterproofing. These are common technical means used by those skilled in the art.

[0032] It should be noted that (motor, screw, gear, rack) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pharmaceutical raw material roasting apparatus, characterized in that: The oven includes a baking mechanism (1), which includes a baking oven (101). An electric heating plate (102) is fixedly installed at the bottom inside the baking oven (101). A sealing door (103) is movably connected to the front of the baking oven (101) via a hinge. The oven also includes a rocking mechanism (2), which includes a rotating rod (21). The rotating rod (21) is movably connected to the back of the baking oven (101) via a bearing. There are three rotating rods (21) that are evenly distributed. The front end of the rotating rod (21) is located inside the baking oven (101). A rocking frame (22) is fixedly connected to the front end of the rotating rod (21). A holding wire mesh frame (23) is hooked inside the rocking frame (22). A rocking mechanism (3) is fixedly connected to the rear side of the surface of the rotating rod (21). Fixing components (4) are fixedly connected to the front and rear sides of the top left side and the front and rear sides of the top right side of the inner wall of the rocking frame (22).

2. The pharmaceutical raw material roasting apparatus according to claim 1, characterized in that: The rocking mechanism (3) includes gears (31), which are fixedly connected to the rear side of the surface of the rotating rod (21). The right side of the surfaces of the three gears (31) are meshed with the same rack (32). The right side of the rack (32) is fixedly connected with a sliding limit assembly (33), and the top of the back of the rack (32) is fixedly connected with a drive assembly (34).

3. The pharmaceutical raw material roasting apparatus according to claim 1, characterized in that: The fixing component (4) includes a connecting block (41), which is fixedly connected to the front and rear sides of the top left side and the front and rear sides of the top right side of the inner wall of the swing frame (22). The connecting block (41) is internally threaded with a fixing screw (42). The top of the fixing screw (42) is fixedly connected with a rotating handle (43), and the bottom of the fixing screw (42) is fixedly connected with a pressing plate (44). The pressing plate (44) is used to press down the holding frame (23).

4. The pharmaceutical raw material roasting apparatus according to claim 2, characterized in that: The sliding limit assembly (33) includes a sliding bar (331), which is fixedly connected to the right side of the rack (32). A slide rail (332) is slidably connected to the surface of the sliding bar (331), and the front side of the slide rail (332) is fixedly connected to the back side of the oven (101).

5. A pharmaceutical raw material roasting apparatus according to claim 2, characterized in that: The drive assembly (34) includes a first shaft (341), which is fixedly connected to the top of the back of the rack (32). A connecting rod (342) is movably connected to the surface of the first shaft (341). A second shaft (343) is movably connected to the other end of the connecting rod (342). A cam (344) is fixedly connected to the front end of the second shaft (343). A motor (345) is fixedly installed on the top of the baking oven (101). The output end of the motor (345) is fixedly connected to the front of the cam (344).

6. The pharmaceutical raw material roasting apparatus according to claim 3, characterized in that: The bottom of the extrusion plate (44) is attached with a protective pad (5), which is made of silicone rubber.

7. The pharmaceutical raw material roasting apparatus according to claim 1, characterized in that: The top of the holding frame (23) is movably connected to an anti-slip mesh plate (6) via a hinge.

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