Food drying device

Abstract

The utility model relates to the field of food processing instruments, in particular to a food drying device which comprises a base plate, at least one material supporting net plate and a heating cover body with an air suction opening formed in the bottom face, an annular hot air opening is further formed in the bottom face of the heating cover body around the air suction opening, and a ventilation hole is formed in the middle of the material supporting net plate. The material supporting net plates are stacked on the base plate, and the heating cover body is arranged on the uppermost material supporting net plate in a covering mode. According to the utility model, hot air can pass through the material supporting net plates more uniformly, and the disorder and disorder conditions of the hot air can be greatly reduced, so that the hot air can act on all foods uniformly and stably, the foods on the lower layer can be ensured to be effectively acted by the hot air, the drying uniformity of the foods can be greatly improved, and the drying efficiency of the foods is improved. Food can be quickly and comprehensively dried, the drying time can be shortened, the drying efficiency can be improved, the drying cost can be reduced, part of food can be prevented from being excessively dried, and the food drying quality can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to food processing equipment field, especially a food drying device. BACKGROUND

[0002] At present, in order to carry out drying treatment to food, the food drying device formed by bottom disc, hot air cover, a plurality of net disc appears, wherein the bottom surface of hot air cover is provided with hot air hole for blowing hot air downward, and each net disc is used for containing food. When using, first, the net disc containing food is stacked on the bottom disc;Then, the hot air cover is covered on the uppermost net disc;Finally, the hot air cover is opened to blow hot air downward through the hot air hole. Such food drying device can meet certain drying demand, but because hot air cover only blows hot air downward, and the food on the net disc is limited, it is easy to cause that hot air cannot uniformly pass through each net disc, and hot air flow is easy to exist in disorder, thereby it is easy to cause that hot air cannot uniformly and stably act on all food, especially cannot effectively act on the food in the lower layer, and further, food drying unevenness is easy to appear, so that food cannot be quickly and comprehensively dried. Therefore, it is necessary to make the food drying device work for a longer time, so that enough food can meet the drying demand. But it not only causes that the drying efficiency is low, but also causes that the drying cost is relatively high, and part of food is over-dried to affect the taste of food, so the drying quality of the existing food drying device is low. Therefore, it is necessary to redesign the structure of the food drying device. SUMMARY

[0003] The utility model discloses a food drying device, which can make hot air pass through each supporting material net disc more uniformly, greatly reduce the disorder of hot air, and make hot air act on all food uniformly and stably. The food in the lower layer can be effectively affected by hot air, and the uniformity of food drying can be greatly improved. The food can be quickly and comprehensively dried, which can shorten the drying time, improve the drying efficiency, reduce the drying cost, avoid over-drying of part of food, and effectively improve the quality of food drying.

[0004] The technical scheme of the utility model is realized as follows:

[0005] The utility model provides a food drying device, including the bottom disc, at least one material supporting net disc, its characterized in be further including the heating cover body that sets up in the middle part of bottom surface and is equipped with suction port, the bottom surface of heating cover body is further equipped with the annular hot -air outlet that blows hot air downwards around suction port, and makes annular hot -air outlet with suction port in the heating cover body intercommunication, the middle part of material supporting net disc is equipped with the vertical through ventilation hole, material supporting net disc is stacked on the bottom disc, the heating cover body is covered and is installed on the uppermost material supporting net disc, and makes ventilation hole be located in the direct below of suction port.

[0006] Preferably, the heating cover body comprises a cover, a hot air generating device capable of blowing hot air to the periphery, and a partition disc, a mounting cavity is formed in the bottom surface of the cover, the hot air generating device is arranged in the middle part of the mounting cavity and the air suction end of the hot air generating device faces downward, the partition disc is arranged at the cavity opening of the mounting cavity, the air suction port is vertically formed through the partition disc and faces the air suction end of the hot air generating device, and the periphery of the partition disc and the cavity wall of the mounting cavity form the annular hot air outlet.

[0007] Preferably, the hot air generating device comprises a centrifugal fan and a plurality of heating components, the centrifugal fan is arranged in the middle part of the mounting cavity and the air suction end of the centrifugal fan faces downward and faces the air suction port, and the centrifugal fan can blow air to the periphery, and each heating component is arranged in the mounting cavity and surrounds the centrifugal fan.

[0008] Preferably, the cavity bottom of the mounting cavity is an arc-shaped cavity bottom with a high middle part and a low periphery.

[0009] Preferably, a ventilation hole is formed in the top surface of the cover and penetrates to the middle part of the mounting cavity.

[0010] Preferably, a cover disc is arranged on the hole opening of the ventilation hole and protrudes upward in the middle part, a plurality of vertical through holes are formed in the periphery of the cover disc and are in communication with the ventilation hole, and each vertical through hole is uniformly arranged around the middle part of the cover disc, a top plate is buckled on the top of the cover, the middle part of the top plate is overlapped on the protruding middle part of the cover disc, the periphery of the top plate is located above each vertical through hole, and an annular ventilation gap in communication with each vertical through hole is reserved between the periphery of the top plate and the top surface of the cover.

[0011] Preferably, an inclined touch surface is arranged on the top surface of the heating cover body, and one end close to the middle part of the heating cover body is high and the other end away from the middle part of the heating cover body is low.

[0012] Preferably, the material supporting net disc comprises a positioning cylinder ring and a net plate, the upper and lower ends of the positioning cylinder ring are respectively an embedded ring and a sleeving ring, the net plate is horizontally arranged in the inner hole of the positioning cylinder ring, and the ventilation hole is vertically formed through the middle part of the net plate.

[0013] Preferably, at least two upper abutment portions are provided in the upper inner hole of the positioning cylinder ring around its vertical center line, and at least two lower abutment portions are provided in the lower inner hole of the positioning cylinder ring around its vertical center line; two adjacent material support mesh trays can be vertically slidably nested together through corresponding insert rings and fitting rings, so that each lower abutment portion on the upper material support mesh tray can overlap the upper abutment portion on the lower material support mesh tray, and also so that each lower abutment portion on the upper material support mesh tray can be vertically misaligned with each upper abutment portion on the lower material support mesh tray as it rotates horizontally.

[0014] Preferably, at least two sidewalls of the insert ring are recessed inward to form upper recesses, and the upper recesses are arranged in a ring array around the axial center line of the insert ring. At least two sidewalls of the fitting ring are recessed inward to form lower recesses, and the lower recesses are arranged in a ring array around the axial center line of the fitting ring. Furthermore, the lower recesses correspond one-to-one with the upper recesses.

[0015] The beneficial effects of this invention are as follows: In this food drying device, not only is an air intake port located in the center of the bottom surface of the heating cover, but also an annular hot air inlet is located around the air intake port, and a ventilation hole corresponding to the air intake port is located in the center of the material tray. Thus, when the food drying device is working, the air intake port and ventilation holes can quickly and stably draw air upwards from the center, creating a negative pressure state in the center of all the material trays. This causes the surrounding air to flow towards the center, thereby forming a negative pressure around the material tray. Furthermore, because the annular hot air vent is circular and blows hot air downwards, the negative pressure around the material trays allows the hot air to quickly and stably pass downwards through each tray. This ensures that the hot air passes through each tray very evenly and stably, greatly reducing the possibility of chaotic or disordered hot air flow. This allows the hot air to act evenly and stably on all the food, ensuring that the lower layers of food are effectively exposed to the hot air. This significantly improves the uniformity of food drying, facilitating rapid and comprehensive drying. It also shortens drying time, increases drying efficiency, reduces drying costs, and prevents some food from being over-dried, ensuring that all food has a good texture and ultimately improving the quality of food drying. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the food drying device of this utility model.

[0017] Figure 2 This is a schematic diagram of the food drying device in its open state according to this utility model.

[0018] Figure 3 This is a schematic diagram showing the disassembled structure of the food drying device in this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the heating cover in this utility model.

[0020] Figure 5 This is a schematic diagram showing the disassembled structure of the heating cover in this utility model.

[0021] Figure 6 This is one of the structural schematic diagrams of the open state of the heating cover in this utility model.

[0022] Figure 7 This is the second structural schematic diagram of the heating cover in the open state of this utility model.

[0023] Figure 8 This is a schematic diagram of the structure of the cover in the present invention in its open state.

[0024] Figure 9 This is one of the three-dimensional structural diagrams of the material support mesh tray in this utility model.

[0025] Figure 10 This is the second three-dimensional structural diagram of the material support mesh tray in this utility model.

[0026] Figure 11 This is one of the structural schematic diagrams of the stacked material support trays in this utility model.

[0027] Figure 12 This is the second structural schematic diagram of the stacked material support trays in this utility model.

[0028] Figure 13 This is a schematic diagram showing the distribution structure of the upper and lower abutting parts on a single material support tray in this utility model. Detailed Implementation

[0029] like Figures 1 to 4 As shown, the food drying device of this utility model includes a base plate 1 and at least one material tray 2. To achieve the purpose of this utility model, it also includes a heating cover 3 with an air intake 31 in the middle of the bottom surface. The bottom surface of the heating cover 3 is also surrounded by an annular hot air inlet 32 ​​for blowing hot air downwards around the air intake 31, and the annular hot air inlet 32 ​​and the air intake 31 are connected inside the heating cover 3. The material tray 2 has a vertically penetrating ventilation hole 21 in the middle. The material tray 2 is stacked on the base plate 1, and the heating cover 3 is installed on the uppermost material tray 2, with the ventilation hole 21 located directly below the air intake 31.

[0030] In this food drying device, not only is an air intake 31 provided in the center of the bottom surface of the heating cover 3, but also an annular hot air inlet 32 ​​is provided around the air intake 31, and a ventilation hole 21 corresponding to the air intake 31 is provided in the center of the material tray 2. In this way, when the food drying device is working, the air intake 31 and the ventilation hole 21 can quickly and stably draw the air upward from the center, which can generate a negative pressure state in the center of all the material trays 2, thereby causing the surrounding air to flow towards the center, and thus forming a negative pressure around the material trays 2. Furthermore, because the annular hot air inlet 32 ​​is annular and blows hot air downwards, the negative pressure around the material tray 2 facilitates the rapid and stable downward flow of hot air through each material tray 2. This ensures that the hot air passes through each material tray 2 very evenly and stably, greatly reducing the occurrence of messy and disordered hot air. This allows the hot air to act evenly and stably on all the food, ensuring that the food in the lower layer is effectively affected by the hot air. This greatly improves the uniformity of food drying, enabling rapid and comprehensive drying of the food. This shortens the drying time, increases drying efficiency, reduces drying costs, and prevents some food from being over-dried, ensuring that all food has a very good taste afterward. This effectively improves the quality of food drying.

[0031] The annular hot air inlet 32 ​​and the air intake 31 are connected within the heating cover 3. This not only ensures stable circulating heating (see...) Figure 2 ,in Figure 2 The direction indicated by the solid arrow in the middle is the direction of airflow inside the food drying device when it is working. It will not affect the airflow through the material tray 2, and it does not require too much heat to dry. Therefore, the food drying device has very high drying efficiency and very low drying cost.

[0032] The diameter of the ventilation hole 21 is greater than 30mm, and its specific diameter can be 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, or 60mm, etc. The diameter of the air intake 31 is greater than 35mm, and its specific diameter can be 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, or 65mm, etc. This ensures stable and smooth air intake, thereby facilitating the formation of a stable negative pressure around the material support tray 2, which in turn allows the hot air from the surrounding area to flow downwards stably, thus reliably meeting the needs of actual use.

[0033] The base 1 is designed with a heating cover 3, which positions the heating modules at the top of the food drying device. This prevents foreign objects and moisture from falling and affecting the drying process, and the material tray 2 and base 1 are easy to clean. This not only improves ease of use but also extends the device's lifespan.

[0034] likeFigure 4 , Figures 6 to 8 As shown, the heating cover 3 includes a cover 33, a hot air generator 34 that blows hot air in all directions, and an isolation plate 35. The bottom surface of the cover 33 has an installation cavity 331. The hot air generator 34 is located in the center of the installation cavity 331, with its suction end facing downwards. The isolation plate 35 is located at the opening of the installation cavity 331. The suction port 31 vertically penetrates the isolation plate 35 and faces the suction end of the hot air generator 34. Annular hot air vents 32 are pre-formed between the four sides of the isolation plate 35 and the cavity wall of the installation cavity 331. This heating cover 3 not only has a stable and reliable structure but is also easy to manufacture, thus helping to further improve the reliability and applicability of the food drying device.

[0035] The isolation tray 35 is a heat insulation tray, which not only restricts airflow but also provides heat insulation. This prevents the food on the top layer from being subjected to excessive heat when the food drying device has a compact structure, thus better meeting the needs of actual use.

[0036] like Figure 8 As shown, an isolation net 311 is provided on the air intake 31. The isolation net 311 can reduce the chance of food being sucked into the installation cavity 331. This not only helps to maintain the high hygiene of the heating cover 3 for a long time, but also reduces the adverse effects from the outside world on the hot air generating device 34, thereby helping to extend its service life.

[0037] like Figure 6 and Figure 7 As shown, the hot air generating device 34 includes a centrifugal fan 341 and several heating elements 342. The centrifugal fan 341 is located in the center of the mounting cavity 331, with its suction end facing downwards and directly opposite the suction port 31. The centrifugal fan 341 can also blow air in all directions. The heating elements 342 are arranged in the mounting cavity 331, surrounding the centrifugal fan 341. This hot air generating device 34 is not only easy to manufacture, but also allows the annular hot air outlet 32 ​​to output hot air stably and evenly, thereby further improving the quality of food drying.

[0038] like Figures 6 to 8 As shown, the bottom of the mounting cavity 331 is an arc-shaped bottom, higher in the middle and lower around the edges. This slows down the airflow speed from the center to the edges within the mounting cavity 331, allowing for a longer contact time between the air and the heating element 342, thus facilitating effective heating. Furthermore, this allows the hot air output from the annular hot air outlet 32 ​​to have a higher velocity, enabling the hot air to pass more stably and smoothly through each material tray 2, resulting in faster and better drying.

[0039] like Figures 6 to 8 As shown, a vent 332 extending through the middle of the mounting cavity 331 is provided on the top surface of the cover 33. This vent 332 facilitates the supply of air to the middle of the mounting cavity 331, and the supplied air can be heated by the heating element 342 and then act on the food through the annular hot air vent 32. This can prevent excessive humidity in the food drying device, thereby further improving the drying efficiency and quality.

[0040] When there is a need for direct exhaust, the following structure can be adopted: at least one air outlet (not shown in the figure) is provided at the bottom of the mounting cavity 331, off-center and off-center from the vent 332, extending to the outer wall of the cover 33. This facilitates the stable and effective exhaust of high-humidity air, thereby further improving drying efficiency and quality.

[0041] like Figure 3 , Figures 5 to 8 As shown, a cover plate 333 with a centrally upward-protruding shape is provided on the opening of the vent 332. Several vertical through holes 334 communicating with the vent 332 are formed around the cover plate 333, and these vertical through holes 334 are evenly arranged around the center of the cover plate 333. A top plate 335 is fastened to the top of the cover 33, with the center of the top plate 335 overlapping the protruding center of the cover plate 333. The perimeter of the top plate 335 is positioned above each of the vertical through holes 334. An annular ventilation gap 336 communicating with each of the vertical through holes 334 is reserved between the perimeter of the top plate 335 and the top surface of the cover 33. This not only achieves stable ventilation but also prevents the inlet from being directly exposed to the outside, which improves hygiene and reduces the likelihood of the hot air generating device 34 being adversely affected by external factors, thereby further improving the applicability and service life of the food drying device.

[0042] like Figure 6 and Figure 7 As shown, the impeller 3411 of the centrifugal fan 341 is horizontally placed in the mounting cavity 331, and the motor 3412 of the centrifugal fan 341 is placed in the vent 332. This not only utilizes the intake air to cool the motor 3412, but also effectively reduces the heat received by the motor 3412 from the heating element 342, thereby enabling the food drying device to have more stable performance and extending its service life. The heating element 342 uses an electric heating wire, which perfectly meets the needs of actual manufacturing and use.

[0043] like Figure 5As shown, the top surface of the heating cover 3 is provided with an inclined touch surface 36, with the end of the touch surface 36 closer to the middle of the heating cover 3 being higher and the end farther from the middle of the heating cover 3 being lower. The touch surface 36 can be used to turn the food drying device on and off, set the drying time and temperature, etc., and can be equipped with a display screen to display the drying time and temperature. The inclined touch surface 36 not only makes it easier for users to observe the touch surface 36, but also makes it easier to operate the touch surface 36, thereby improving the convenience of use.

[0044] like Figure 8 As shown, the cover 33 is a hollow cover, and the electrical components of the touch surface 36 are disposed in the hollow cavity 337 of the cover 33, which can play a protective role and thus help extend the service life.

[0045] like Figure 4 As shown, operating grooves 338 are respectively provided on the two side walls of the cover 33. The operating grooves 338 can be used by fingers, which makes it convenient for the user to move the cover 33, thereby improving the ease of use.

[0046] like Figures 1 to 3 , Figure 9 and Figure 10 As shown, the material-supporting mesh tray 2 includes a positioning cylinder ring 22 and a mesh plate 23. The upper and lower ends of the positioning cylinder ring 22 are respectively an insert ring 221 and a fitting ring 222. The mesh plate 23 is horizontally disposed in the inner hole of the positioning cylinder ring 22, and the ventilation hole 21 is vertically opened through the middle of the mesh plate 23. This type of material-supporting mesh tray 2 allows the upper and lower material-supporting mesh trays 2 to be nested together through the corresponding fit of the insert ring 221 and the fitting ring 222. This improves the stability and accuracy of the installation and positioning of the material-supporting mesh tray 2, thereby achieving a more stable drying effect and further enhancing the reliability and applicability of the food drying device.

[0047] like Figure 9 and Figure 10 As shown, the ventilation hole 21 has a raised ring 211 at its opening, and the bottom surface of the mesh plate 23 has a reinforcing rib 231. This gives the mesh plate 23 high structural strength, thereby improving its durability.

[0048] like Figures 9 to 13As shown, at least two upper abutment portions 223 are provided in the upper inner hole of the positioning cylinder ring 22 around its vertical center line, and at least two lower abutment portions 224 are provided in the lower inner hole of the positioning cylinder ring 22 around its vertical center line; two adjacent material support mesh trays 2 can be vertically slidably nested together through corresponding insert rings 221 and fitting rings 222, so that each lower abutment portion 224 on the upper material support mesh tray 2 can overlap the upper abutment portion 223 on the lower material support mesh tray 2, and also so that each lower abutment portion 224 on the upper material support mesh tray 2 can be vertically misaligned with each upper abutment portion 223 on the lower material support mesh tray 2 as it rotates horizontally. This design minimizes the nesting of adjacent material-supporting trays 2 when the lower abutment 224 overlaps with the upper abutment 223, thus providing more space above the mesh plate 23. Furthermore, as the upper material-supporting tray 2 rotates horizontally, the lower abutment 224 and upper abutment 223 become misaligned, preventing them from overlapping. This allows the upper material-supporting tray 2 to move downwards without restriction, further reducing the space above the mesh plate 23. This structure facilitates adjustment of the placement space according to food size, better meeting practical needs and further enhancing the applicability of the food drying device.

[0049] like Figure 9 and Figure 10 As shown, at least two sidewalls of the insert ring 221 are recessed inward to form upper recesses 225, and the upper recesses 225 are arranged in a circular array around the axial center line of the insert ring 221. At least two sidewalls of the fitting ring 222 are recessed inward to form lower recesses 226, and the lower recesses 226 are arranged in a circular array around the axial center line of the fitting ring 222. Furthermore, each lower recess 226 corresponds one-to-one with each upper recess 225. This not only facilitates finger operation but also provides a limiting function, thereby improving the ease of operation of the material tray 2 and enhancing the accuracy and stability of its placement.

[0050] like Figures 9 to 13 As shown, with the corresponding lower abutment 224 on the upper and lower adjacent material trays 2 pressing on the corresponding upper abutment 223, by rotating the upper material tray 2 horizontally by 180 degrees, the lower abutment 224 will no longer press on the upper abutment 223. In this way, the upper and lower adjacent material trays 2 will have a larger nesting amount than before, thereby achieving the purpose of adjusting the placement space.

[0051] When using this food drying device, first clean the tray 2, then place the food to be dried evenly on the tray 2, nesting the tray 2 layer by layer on the base plate 1. Then, power on the heating cover 3, adjust the temperature and time according to the type of food, and after confirmation, you can start the food drying device through the touch surface 36, thus meeting the needs of actual use.

[0052] The above embodiments are preferred embodiments of this utility model. All structures similar to this utility model and equivalent changes thereof should fall within the protection scope of this utility model.

Claims

1. A food drying apparatus comprising a base pan (1), at least one holding grid (2), characterized in that: It also includes the heating cover (3) with the air suction port (31) on the middle of the bottom surface, the annular hot air port (32) for blowing hot air downward is arranged around the air suction port (31) on the bottom surface of the heating cover (3), and the annular hot air port (32) is communicated with the air suction port (31) in the heating cover (3), the vertical ventilation hole (21) is arranged in the middle of the material supporting net disc (2), the material supporting net disc (2) is stacked on the bottom disc (1), the heating cover (3) is arranged on the uppermost material supporting net disc (2), and the ventilation hole (21) is located directly below the air suction port (31).

2. The food drying apparatus of claim 1, wherein: The heating cover (3) includes the cover (33), the hot air generating device (34) for blowing hot air to the four sides, and the isolation disc (35), the installation cavity (331) is arranged on the bottom surface of the cover (33), the hot air generating device (34) is arranged in the middle of the installation cavity (331), the air suction end of the hot air generating device (34) faces downward, the isolation disc (35) is arranged on the cavity opening of the installation cavity (331), the air suction port (31) is vertically arranged through the isolation disc (35) and faces the air suction end of the hot air generating device (34), and the annular hot air port (32) is formed between the four sides of the isolation disc (35) and the cavity wall of the installation cavity (331).

3. The food drying apparatus of claim 2, wherein: The hot air generating device (34) includes the centrifugal fan (341) and a plurality of heating components (342), the centrifugal fan (341) is arranged in the middle of the installation cavity (331), the air suction end of the centrifugal fan (341) faces downward and faces the air suction port (31), and the centrifugal fan (341) can blow air to the four sides, and each heating component (342) is arranged in the installation cavity (331) and surrounds the centrifugal fan (341).

4. The food drying apparatus of claim 2 or 3, wherein: The cavity bottom of the installation cavity (331) is an arc-shaped cavity bottom with a high middle and a low periphery.

5. The food drying apparatus of claim 2 or 3, wherein: The top surface of the cover (33) is provided with the ventilation hole (332) penetrating into the middle of the installation cavity (331).

6. The food drying apparatus of claim 5, wherein: The hole opening of the ventilation hole (332) is provided with the cover disc (333) protruding upward in the middle, a plurality of vertical through holes (334) are arranged around the cover disc (333) and are communicated with the ventilation hole (332), the top plate (335) is buckled to the top of the cover (33), the middle part of the top plate (335) is overlapped on the protruding middle part of the cover disc (333), the periphery of the top plate (335) is located above each vertical through hole (334), and the annular ventilation gap (336) is reserved between the periphery of the top plate (335) and the top surface of the cover (33) and is communicated with each vertical through hole (334).

7. The food drying apparatus of claim 1, wherein: The top surface of the heating cover (3) is provided with the inclined touch surface (36), and one end close to the middle of the heating cover (3) is high, and one end away from the middle of the heating cover (3) is low.

8. The food drying apparatus of claim 1, wherein: The material supporting net disc (2) comprises a positioning cylinder ring (22) and a net plate (23), upper and lower ends of the positioning cylinder ring (22) are respectively an embedded ring (221) and a sleeving ring (222), the net plate (23) is horizontally arranged in an inner hole of the positioning cylinder ring (22), and the ventilation hole (21) is vertically arranged through a middle part of the net plate (23).

9. The food drying apparatus of claim 8, wherein: At least two upper abutting portions (223) are arranged around a vertical center line of the upper inner hole of the positioning cylinder ring (22), and at least two lower abutting portions (224) are arranged around a vertical center line of the lower inner hole of the positioning cylinder ring (22); the upper and lower adjacent two material supporting net discs (2) are vertically slidably nested through the corresponding embedded ring (221) and the sleeving ring (222), and the upper abutting portions (223) on the upper material supporting net disc (2) are overlapped on the lower abutting portions (224) on the lower material supporting net disc (2), and the lower abutting portions (224) on the upper material supporting net disc (2) are vertically dislocated from the upper abutting portions (223) on the lower material supporting net disc (2) through horizontal rotation.

10. The food drying apparatus of claim 8 or 9, wherein: At least two side walls of the embedded ring (221) are inwardly recessed to form upper recessed portions (225), and the upper recessed portions (225) are annularly arranged around an axial center line of the embedded ring (221), at least two side walls of the sleeving ring (222) are inwardly recessed to form lower recessed portions (226), and the lower recessed portions (226) are annularly arranged around an axial center line of the sleeving ring (222), and the lower recessed portions (226) are vertically corresponding to the upper recessed portions (225).

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