Vegetable dehydrating and drying device

Abstract

The invention relates to the technical field of vegetable drying, and discloses a vegetable dehydrating and drying device which comprises a base, a shell is fixedly connected to the upper portion of the base, a movable door is movably installed on the front portion of the shell, a heat supply gas machine is fixedly connected to the interior of the base, and a bottom shell is fixedly connected to the upper surface of the heat supply gas machine. The middle of the bottom shell communicates with the air outlet end of the heat supply air machine. A plurality of discs filled with vegetable slices are stacked together up and down, then a heat supply machine works, the air outlet end continuously supplies hot air, hot air enters each layer of space, hot air in the lower layer of space can penetrate through through holes in the discs to flow upwards, the hot air can dry the lower surfaces of the vegetable slices in the rising process, and the drying efficiency is improved. And hot air exhausted by the layer of air outlet holes can dry the upper surfaces of the vegetable slices, so that the problems that the vegetable slices in the middle of existing equipment are difficult to dry, the vegetable slices on the periphery are prone to being excessively dried, and consequently drying is uneven are solved.

Description

Technical Field

[0001] This application relates to the technical field of vegetable drying, and particularly relates to a vegetable dehydration and drying device. Background Art

[0002] Dehydrated vegetables, also known as rehydrated vegetables, are a kind of dried vegetables made by processing fresh vegetables through washing, drying, etc., and removing most of the water in the vegetables. The original color and nutritional components of the vegetables are basically kept unchanged. They are not only easy to store and transport, but also can effectively regulate the off-peak seasons of vegetable production. When eating, just immerse them in clean water to restore them, and retain the original color, nutrition and flavor of the vegetables. Drying is an essential process for making dehydrated vegetables.

[0003] Existing drying equipment all has some disadvantages. First, the existing equipment dries vegetable slices from all around, which makes it difficult to dry the vegetable slices in the middle of the equipment, while the vegetable slices around are easily over-dried, resulting in uneven drying. Second, during the drying process of the equipment, some vegetable slices need to be turned over, otherwise uneven drying of the upper and lower surfaces will occur. Finally, the existing drying equipment usually can only dry vegetable slices with one drying difficulty, and cannot meet the requirement of drying vegetable slices with multiple drying difficulties at one time under the premise of ensuring the drying effect and not over-drying. Summary of the Invention

[0004] This application proposes a vegetable dehydration and drying device, which has the advantage of uniform drying, and is used to solve the problem that it is difficult to dry the vegetable slices in the middle of the existing equipment, and the vegetable slices around are easily over-dried, resulting in uneven drying.

[0005] To achieve the above object, this application adopts the following technical scheme: A vegetable dehydration and drying device includes a base, the upper part of the base is fixedly connected with a housing, the front part of the housing is movably installed with a movable door, the inside of the base is fixedly connected with a heating air blower, the upper surface of the heating air blower is fixedly connected with a bottom shell, and the middle part of the bottom shell is communicated with the air outlet end of the heating air blower; A plurality of discs, the lowermost disc is clamped with the upper bottom shell, the bottom of the upper disc is adapted to the top of the lower disc, a plurality of through holes are opened at the bottom of the disc, an installation hole is opened at the center of the inside of the disc, and a rotating sleeve is rotatably installed in the installation hole, and a plurality of air outlet holes are opened on the curved surface of the rotating sleeve; A top cover, the top cover is clamped with the uppermost disc, two return air pipes are installed on the upper surface of the top cover, the bottom ends of the return air pipes are communicated with the return air end of the heating air blower, a rotating sleeve is rotatably installed in the middle of the top cover, and a plurality of air outlet holes are opened on the curved surface of the rotating sleeve; When the above structure is working, multiple discs are stacked between the bottom shell and the top cover, which can effectively prevent hot air from being discharged into the interior of the shell. Moreover, each layer has air vents to discharge hot air to dry the upper surface of the vegetable slices. The hot air from the lower layer will flow upward through the through holes and dry the lower surface of the vegetable slices.

[0006] Preferably, a driving motor is fixedly installed on the upper surface of the shell. The bottom end of the output shaft of the driving motor is fixedly connected with a telescopic shaft. The telescopic shaft can extend or shorten while transmitting the power of the driving motor. The bottom end of the telescopic shaft is fixedly connected with the top of a rotating sleeve. Limiting blocks are arranged between the bottom end of the rotating sleeve and two adjacent rotating sleeves. The rotating sleeve is fixedly connected with the lower limiting block, and the remaining limiting blocks are fixedly connected with the rotating sleeves above them. The tops of the rotating sleeves are fixedly connected with limiting grooves. When the above structure is working, through the setting of the telescopic shaft, the distance between the top cover and the bottom shell can be adjusted, so that the number of discs placed between the top cover and the bottom shell can be changed within a certain range. Secondly, when multiple discs are stacked, the upper limiting block can be adapted to the lower limiting groove to prevent the hot air inside the rotating sleeve from leaking. Moreover, when the driving motor works, it will drive the telescopic shaft to rotate, and the telescopic shaft will drive the rotating sleeve to rotate. Since the limiting block is adapted to the limiting groove, the rotating sleeve can drive multiple rotating sleeves below to rotate, while the discs, the bottom shell and the top cover will not rotate, so that the air vents on the curved surface of the rotating sleeve will periodically sweep across the vegetable slices laid flat on this layer of discs, further ensuring the uniformity of the vegetable slices during drying.

[0007] Preferably, a partition plate is fixedly connected to the top of the rotating sleeve. A sealing plate is arranged in the middle of the partition plate. The upper surface of the sealing plate is fixedly connected with a large spring. The upper end of the large spring is fixedly connected with a fixing plate. The topmost fixing plate is fixedly connected with the inner wall of the rotating sleeve, and the remaining fixing plates are fixedly connected with the rotating sleeves at the same horizontal position as them. Another fixing plate is fixedly connected to the inside of the lowermost rotating sleeve. When the above structure is working, through the setting of the partition plate and the sealing plate, when hot air enters the lower rotating sleeve, due to the certain pressure of the hot air entering the rotating sleeve, the air pressure will push the sealing plate upward, so that the gas in the lower rotating sleeve will enter the inside of the upper rotating sleeve. At the same time, the hot air in the lower rotating sleeve still has a certain pressure, thus further ensuring the amount of gas discharged from each layer of space, and ensuring the uniform drying of the vegetable slices.

[0008] Preferably, a mounting seat is fixedly connected to the lower side of the fixing plate. A plurality of mounting cavities are formed inside the mounting seat. An electromagnet is fixedly installed inside the mounting cavity. A small spring is fixedly connected to the outside of the electromagnet. A permanent magnet is fixedly connected to the outer end of the small spring. A plug is fixedly connected to the outside of the permanent magnet. The outer end of the plug is adapted to the air outlet hole. An electromagnetic ring is fixedly installed below the lowermost mounting seat. A permanent magnetic ring fixedly connected to the sealing plate is arranged below the electromagnetic ring. With the above structure, during operation, the electromagnet is energized to attract the permanent magnet, causing the permanent magnet and the plug to move closer to the electromagnet, so that hot air can be discharged from the air outlet hole. Secondly, by energizing the electromagnetic ring, it repels the permanent magnetic ring, so that the sealing plate will not be opened under the impact of the air pressure of the lower rotating sleeve.

[0009] Preferably, sliders are provided at the edge of the top cover, and slide rails are provided on the inner wall of the housing. The sliders are located inside the slide rails and can slide up and down along the slide rails. With the above structure, during operation, the top cover can slide up and down along the slide rails, and further ensure that the top cover will not rotate. Preferably, the return air pipe is a flexible pipe, which does not interfere with the up and down movement of the top cover.

[0010] Preferably, the limiting block is adapted to the limiting groove.

[0011] Preferably, the sealing plate contacts the partition plate below it under the push of the large spring.

[0012] Preferably, the number of plugs inside the same rotating sleeve is equal to the number of air outlet holes formed on its surface, and the plugs and the air outlet holes are in the same horizontal position.

[0013] The beneficial effects of the present invention are as follows: 1. In the present invention, a plurality of discs filled with vegetable slices are stacked on top of each other. The lowermost disc is clamped to the bottom case. Then, the hot air blower works, and the air outlet continuously supplies hot air. The hot air will enter the inside of a plurality of rotating sleeves and finally be discharged from the air outlet holes. Since a plurality of discs are stacked between the bottom case and the top cover, the hot air is always in the multi-layer space formed by the bottom case, the top cover and the plurality of discs, and hot air enters each layer of space. The hot air in the lower layer space will flow upward through the through holes on the disc. During the rising process of the hot air, the lower surface of the vegetable slices will be dried, and the hot air discharged from the air outlet holes of this layer will dry the upper surface of the vegetable slices, thereby solving the problem that the vegetable slices in the middle of the existing equipment are difficult to be dried, and the vegetable slices around are easily over-dried, resulting in uneven drying.

[0014] 2. The present invention can drive multiple rotating sleeves below to rotate through the rotating sleeve, so that the air outlet on the curved surface of the rotating sleeve will periodically sweep across the vegetable slices laid flat on this layer of disc. Multiple discs are stacked between the bottom shell and the top cover, which can effectively prevent hot air from being discharged into the interior of the shell. Moreover, each layer has air outlets to discharge hot air, drying the upper surface of the vegetable slices. The hot air from the lower layer will flow upward through the through holes, and the hot air will dry the lower surface of the vegetable slices, further ensuring the uniformity during the drying of the vegetable slices, thus solving the problem that in the drying process of existing equipment, some vegetable slices need to be turned over, otherwise the upper and lower surfaces will be unevenly dried.

[0015] 3. The present invention lays vegetable slices with different dehydration requirements or different dehydration difficulties flat inside the disc, and stacks them in order of increasing dehydration difficulty from bottom to top. The electromagnet at the bottom is energized to adsorb the permanent magnet, so that the permanent magnet and the plug move closer to the electromagnet, thereby enabling the air outlet to discharge hot air, and the other air outlets are in the closed state, and the top sealing plate is in the closed state. When the vegetable slices at the bottom are dehydrated and dried to a certain extent, the air outlets of this layer are closed, and the air outlets of the upper layer are opened. In this way, until the air outlets at the top are opened, the vegetable slices with different dehydration difficulties are simultaneously dried and dehydrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings forming a part of the specification depict the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application in a clear and understandable manner.

[0017] Referring to the drawings, the present disclosure can be more clearly understood from the following detailed description, wherein: Figure 1 is a schematic diagram of the overall appearance of the present invention; Figure 2 is a schematic diagram of a half-section of the housing of the present invention; Figure 3 is a schematic diagram of a half-section of the disc of the present invention; Figure 4 is a schematic diagram of a half-section of the bottom shell of the present invention; Figure 5 is a schematic diagram of a half-section of the top cover of the present invention; Figure 6 For the present invention Figure 5 the enlarged schematic diagram at A in; Figure 7 is a schematic diagram of the disc of the present invention; Figure 8 is a schematic diagram of the rotating sleeve of the present invention.

[0018] Wherein: 1. Base; 2. Housing; 3. Movable door; 4. Driving motor; 5. Heating air blower; 6. Bottom case; 7. Disc; 8. Through hole; 9. Mounting hole; 10. Rotating sleeve; 11. Air outlet hole; 12. Top cover; 13. Return air pipe; 14. Rotating sleeve; 15. Telescopic shaft; 16. Limiting block; 17. Partition board; 18. Sealing plate; 19. Big spring; 20. Fixed plate; 21. Mounting seat; 22. Mounting cavity; 23. Electromagnet; 24. Small spring; 25. Permanent magnet; 26. Plug; 27. Electromagnetic ring; 28. Permanent magnet ring; 29. Slide block; 30. Slide rail; 31. Limiting groove. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0020] Please refer to Figure 1-8 , this embodiment provides a vegetable dehydration and drying device, including a base 1. The upper part of the base 1 is fixedly connected with a housing 2. The front part of the housing 2 is movably installed with a movable door 3. The inside of the base 1 is fixedly connected with a heating air blower 5. The upper surface of the heating air blower 5 is fixedly connected with a bottom case 6. The middle part of the bottom case 6 is communicated with the air outlet end of the heating air blower 5; A plurality of discs 7. The lowermost disc 7 is clamped with the upper bottom case 6. The bottom of the upper disc 7 is adapted to the top of the lower disc 7. A plurality of through holes 8 are opened at the bottom of the disc 7. A mounting hole 9 is opened at the center of the inside of the disc 7. A rotating sleeve 10 is rotatably installed inside the mounting hole 9. A plurality of air outlet holes 11 are opened on the curved surface of the rotating sleeve 10; A top cover 12. The top cover 12 is clamped with the uppermost disc 7. Two return air pipes 13 are installed on the upper surface of the top cover 12. The bottom ends of the return air pipes 13 are communicated with the return air end of the heating air blower 5. A rotating sleeve 14 is rotatably installed in the middle of the top cover 12. A plurality of air outlet holes 11 are opened on the curved surface of the rotating sleeve 14.

[0021] A feed crushing device for breeding disclosed in the present disclosure. When the movable door 3 is opened, the vegetable slices to be dried are laid flat inside the disc 7, and multiple discs 7 filled with vegetable slices are stacked on top of each other. The lowermost disc 7 is clamped with the bottom shell 6, and the top cover 12 is clamped with the uppermost disc 7. Then the movable door 3 is closed. Subsequently, the heat supply blower 5 works, and hot air is continuously supplied from the air outlet end. The hot air will enter the interiors of multiple rotating sleeves 10 and finally be discharged from the air outlet holes 11. Since multiple discs 7 are stacked between the bottom shell 6 and the top cover 12, the hot air is always in the multi-layer space formed by the bottom shell 6, the top cover 12, and multiple discs 7, and hot air enters each layer of space. The hot air in the lower layer space will flow upward through the through holes 8 in the disc 7 and finally enter the return air pipe 13 and return to the interior of the heat supply blower 5. During the process of the hot air rising, the lower surface of the vegetable slices will be dried, and the hot air discharged from the air outlet holes 11 in this layer will dry the upper surface of the vegetable slices. While saving energy consumption, the vegetable slices can be dried more efficiently; It can be understood that multiple discs 7 are stacked between the bottom shell 6 and the top cover 12, which can effectively prevent the hot air from being discharged into the interior of the housing 2. Moreover, hot air is discharged from the air outlet holes 11 in each layer to dry the upper surface of the vegetable slices. The upper surface of the vegetable slices is dried, and the hot air in the lower layer will flow upward through the through holes 8, and the hot air will dry the lower surface of the vegetable slices.

[0022] Among them, a driving motor 4 is fixedly installed on the upper surface of the housing 2. The bottom end of the output shaft of the driving motor 4 is fixedly connected with a telescopic shaft 15. The telescopic shaft 15 can extend or shorten while transmitting the power of the driving motor 4. The bottom end of the telescopic shaft 15 is fixedly connected with the top of the rotating sleeve 14. Limit blocks 16 are arranged between the bottom end of the rotating sleeve 14 and two adjacent rotating sleeves 10. The rotating sleeve 14 is fixedly connected with the lower limit block 16, and the remaining limit blocks 16 are fixedly connected with the rotating sleeves 10 above them. Limit grooves 31 are fixedly connected to the tops of the rotating sleeves 10; A feed crushing device for breeding disclosed in the present disclosure. Through the arrangement of the telescopic shaft 15, the distance between the top cover 12 and the bottom shell 6 can be adjusted, so that the number of discs 7 placed between the top cover 12 and the bottom shell 6 can be changed within a certain range; Secondly, when multiple discs 7 are stacked, the upper limit block 16 is adapted to the lower limit groove 31, which can prevent the hot air inside the rotating sleeve 10 from leaking. Moreover, when the driving motor 4 works, it will drive the telescopic shaft 15 to rotate, and the telescopic shaft 15 will drive the rotating sleeve 14 to rotate. Since the limit block 16 is adapted to the limit groove 31, the rotating sleeve 14 can drive the multiple rotating sleeves 10 below to rotate, while the disc 7, the bottom shell 6, and the top cover 12 will not rotate, so that the air outlet holes 11 on the curved surface of the rotating sleeve 10 will periodically sweep across the vegetable slices laid flat on this layer of the disc 7, further ensuring the uniformity of the vegetable slices during drying.

[0023] Among them, a partition plate 17 is fixedly connected to the top of the rotating sleeve 10. A sealing plate 18 is arranged in the middle of the partition plate 17. A large spring 19 is fixedly connected to the upper surface of the sealing plate 18. The upper end of the large spring 19 is fixedly connected to a fixing plate 20. The uppermost fixing plate 20 is fixedly connected to the inner wall of the rotating sleeve 14. The remaining fixing plates 20 are all fixedly connected to the rotating sleeve 10 at the same horizontal position. Another fixing plate 20 is fixedly connected to the inside of the lowermost rotating sleeve 10; In a feed crushing device for breeding disclosed in the present disclosure, through the arrangement of the partition plate 17 and the sealing plate 18, when hot air enters the lower rotating sleeve 10, due to the certain pressure when the hot air enters the rotating sleeve 10, the air pressure will push the sealing plate 18 to move upward, so that the gas in the lower rotating sleeve 10 will enter the inside of the upper rotating sleeve 10. At the same time, the hot air in the lower rotating sleeve 10 still has a certain pressure, thereby further ensuring the amount of gas discharged from each layer of space, and thus ensuring that the vegetable slices are evenly dried.

[0024] Among them, a mounting seat 21 is fixedly connected below the fixing plate 20. A plurality of mounting cavities 22 are opened inside the mounting seat 21. An electromagnet 23 is fixedly installed inside the mounting cavity 22. A small spring 24 is fixedly connected to the outside of the electromagnet 23. The outer end of the small spring 24 is fixedly connected to a permanent magnet 25. A plug 26 is fixedly connected to the outside of the permanent magnet 25. The outer end of the plug 26 is adapted to the air outlet hole 11. An electromagnetic ring 27 is fixedly installed below the uppermost mounting seat 21. A permanent magnet ring 28 fixedly connected to the sealing plate 18 is arranged below the electromagnetic ring 27; In a feed crushing device for breeding disclosed in the present disclosure, by energizing the electromagnet 23 to adsorb the permanent magnet 25, the permanent magnet 25 and the plug 26 are moved closer to the electromagnet 23, so that the hot air can be discharged from the air outlet hole 11; secondly, by energizing the electromagnetic ring 27, it repels the permanent magnet ring 28, so that the sealing plate 18 will not be opened by the impact of the air pressure in the lower rotating sleeve 10.

[0025] Among them, a slider 29 is arranged at the edge of the top cover 12. A slide rail 30 is arranged on the inner wall of the housing 2. The slider 29 is located inside the slide rail 30 and can slide up and down along the slide rail 30. The return air pipe 13 is a flexible pipe, which does not hinder the up and down movement of the top cover 12. The limit block 16 is adapted to the limit groove 31. The sealing plate 18 contacts the partition plate 17 below it under the push of the large spring 19. The number of plugs 26 in the same rotating sleeve 10 is equal to the number of air outlet holes 11 opened on its surface, and the plugs 26 and the air outlet holes 11 are at the same horizontal position. Its function is that the top cover 12 can slide up and down along the slide rail 30, and further ensure that the top cover 12 will not shake.

[0026] This embodiment provides a vegetable dehydration and drying device. By laying vegetable slices with different dehydration requirements or different dehydration difficulties flat inside the disc 7 and stacking them in a stack according to the dehydration difficulty, with the dehydration difficulty increasing from bottom to top. The electromagnet 23 at the bottom is energized to adsorb the permanent magnet 25, causing the permanent magnet 25 and the plug 26 to move closer to the electromagnet 23, so that the air outlet 11 can discharge hot air, and the other air outlets 11 are in a closed state. And by energizing the electromagnetic ring 27, it repels the permanent magnet ring 28, so that the sealing plate 18 will not be opened under the impact of the air pressure of the lower rotating sleeve 10. When the hot air discharged from the lowest layer air outlet 11 rises and flows, it will slowly dehydrate and dry the vegetable slices on each layer. When the vegetable slices at the bottom are dehydrated and dried to a certain extent, the air outlet 11 of this layer is closed, and the air outlet 11 of the upper layer is opened. In this way, until the air outlet 11 at the top is opened, so as to dehydrate and dry the vegetable slices with different dehydration difficulties at the same time.

[0027] Working principle: The movable door 3 is opened, and the vegetable slices to be dried are laid flat inside the disc 7, and multiple discs 7 filled with vegetable slices are stacked up and down. The bottom disc 7 is clamped with the bottom shell 6, and the top cover 12 is clamped with the top disc 7. The movable door 3 is closed. Subsequently, the heat supply air machine 5 works, and the air outlet continuously supplies hot air. The hot air will enter the interiors of multiple rotating sleeves 10. When the driving motor 4 works, it will drive the telescopic shaft 15 to rotate. The telescopic shaft 15 will drive the rotating sleeve 14 to rotate. The rotating sleeve 14 can drive the multiple lower rotating sleeves 10 to rotate, so that the air outlet 11 on the curved surface of the rotating sleeve 10 will periodically sweep across the vegetable slices laid flat on this layer of the disc 7. Since multiple discs 7 are stacked between the bottom shell 6 and the top cover 12, the hot air has been in the multi-layer space formed by the bottom shell 6, the top cover 12, and multiple discs 7, and hot air enters each layer of space. Moreover, the hot air in the lower layer space will flow upward through the through holes 8 on the disc 7 and finally enter the return air pipe 13 and return to the interior of the heat supply air machine 5. During the rising process of the hot air, it will dry the lower surface of the vegetable slices, and the hot air discharged from the air outlet 11 of this layer will dry the upper surface of the vegetable slices. While saving energy consumption, it can more efficiently dry the vegetable slices; Through the settings of the partition plate 17 and the sealing plate 18, when hot air enters the lower rotating sleeve 10, due to the certain pressure when the hot air enters the rotating sleeve 10, the air pressure will push the sealing plate 18 upward, so that the gas in the lower rotating sleeve 10 will enter the interior of the upper rotating sleeve 10. At the same time, the hot air in the lower rotating sleeve 10 still has a certain pressure, thereby further ensuring the amount of gas discharged from each layer of space; By laying thin vegetable slices with different dehydration requirements or different dehydration difficulties flat inside the disc 7 and stacking them in a stack from bottom to top according to the dehydration difficulty, with the dehydration difficulty increasing from bottom to top, the electromagnet 23 at the bottom is energized to adsorb the permanent magnet 25, causing the permanent magnet 25 and the plug 26 to move closer to the electromagnet 23, so that the hot air outlet 11 can discharge hot air, and the remaining hot air outlets 11 are in a closed state, and the top sealing plate 18 is in a closed state. When the thin vegetable slices at the bottom are dehydrated and dried to a certain extent, the hot air outlet 11 of this layer is closed, and the hot air outlet 11 of the upper layer is opened. In this way, until the hot air outlet 11 at the top is opened, the thin vegetable slices with different dehydration difficulties can be dried and dehydrated simultaneously.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A vegetable dehydration and drying device, comprising a base (1), characterized in that, The upper part of the base (1) is fixedly connected with a housing (2). An active door (3) is movably installed at the front of the housing (2). The inside of the base (1) is fixedly connected with a heating air blower (5). The upper surface of the heating air blower (5) is fixedly connected with a bottom shell (6). The middle part of the bottom shell (6) is communicated with the air outlet end of the heating air blower (5). A plurality of discs (7). The lowermost disc (7) is clamped with the upper bottom shell (6). The bottom of the upper disc (7) is adapted to the top of the lower disc (7). A plurality of through holes (8) are formed in the bottom of the disc (7). An installation hole (9) is formed in the center of the inside of the disc (7). A rotating sleeve (10) is rotatably installed in the installation hole (9). A plurality of air outlet holes (11) are formed in the curved surface of the rotating sleeve (10). A top cover (12). The top cover (12) is clamped with the uppermost disc (7). Two return air pipes (13) are installed on the upper surface of the top cover (12). The bottom ends of the return air pipes (13) are communicated with the return air end of the heating air blower (5). A rotating sleeve (14) is rotatably installed in the middle of the top cover (12). A plurality of air outlet holes (11) are formed in the curved surface of the rotating sleeve (14).

2. The vegetable dehydration and drying device according to claim 1, wherein, A driving motor (4) is fixedly installed on the upper surface of the housing (2). The bottom end of the output shaft of the driving motor (4) is fixedly connected with a telescopic shaft (15). The telescopic shaft (15) can extend or contract while transmitting the power of the driving motor (4). The bottom end of the telescopic shaft (15) is fixedly connected with the top of the rotating sleeve (14). A limiting block (16) is arranged between the bottom end of the rotating sleeve (14) and the adjacent two rotating sleeves (10). The rotating sleeve (14) is fixedly connected with the lower limiting block (16). The remaining limiting blocks (16) are fixedly connected with the rotating sleeves (10) above them. Limiting grooves (31) are fixedly connected to the tops of the rotating sleeves (10).

3. The vegetable dehydration and drying device according to claim 2, characterized in that, A partition plate (17) is fixedly connected to the top of the rotating sleeve (10). A sealing plate (18) is arranged in the middle of the partition plate (17). A large spring (19) is fixedly connected to the upper surface of the sealing plate (18). The upper end of the large spring (19) is fixedly connected with a fixing plate (20). The uppermost fixing plate (20) is fixedly connected with the inner wall of the rotating sleeve (14). The remaining fixing plates (20) are fixedly connected with the rotating sleeves (10) at the same horizontal position as them. Another fixing plate (20) is fixedly connected to the inside of the lowermost rotating sleeve (10).

4. The vegetable dehydration and drying device according to claim 3, characterized in that, A mounting base (21) is fixedly connected below the fixed plate (20). A plurality of mounting cavities (22) are respectively formed inside the mounting base (21). An electromagnet (23) is fixedly installed inside the mounting cavity (22). A small spring (24) is fixedly connected to the outside of the electromagnet (23). The outer end of the small spring (24) is fixedly connected to a permanent magnet (25). A plug (26) is fixedly connected to the outside of the permanent magnet (25). The outer end of the plug (26) is adapted to the air outlet hole (11). An electromagnetic ring (27) is fixedly installed below the lowermost mounting base (21). A permanent magnet ring (28) fixedly connected to the sealing plate (18) is arranged below the electromagnetic ring (27).

5. The vegetable dehydration and drying device according to claim 4, characterized in that, Sliders (29) are provided at the edge of the top cover (12). Slide rails (30) are provided on the inner wall of the housing (2). The sliders (29) are located inside the slide rails (30) and can slide up and down along the slide rails (30).

6. The vegetable dehydration and drying device according to claim 5, characterized in that, The return air pipe (13) is a flexible pipe, which does not hinder the up and down movement of the top cover (12).

7. The vegetable dehydration and drying device according to claim 6, wherein, The limit block (16) is adapted to the limit groove (31).

8. A vegetable dehydration and drying device according to claim 7, characterized in that, The sealing plate (18) contacts the partition plate (17) below it under the push of the large spring (19).

9. A vegetable dehydration and drying device according to claim 8, characterized in that, The number of plugs (26) inside the same rotating sleeve (10) is equal to the number of air outlet holes (11) formed on its surface, and the plugs (26) and the air outlet holes (11) are in a horizontal position.

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