Preparation technology of high-nutrition dried sweet potato

Abstract

The invention discloses a preparation process of high-nutrition dried sweet potatoes, and belongs to the technical field of preparation of dried sweet potatoes, the high-nutrition dried sweet potatoes comprise a placement box, a box cover is arranged at the upper end of the placement box, a sterilization lamp is mounted on the inner side wall of the placement box, a threaded pipe is rotatably connected to the inner bottom end of the placement box, and a threaded rod is in threaded connection with the interior of the threaded pipe; the upper end of the threaded rod penetrates through a pipe opening of the threaded pipe, extends upwards and is connected with a screen plate, the screen plate is slidably arranged on the screen plate, and a mounting frame is connected to the outer side wall of one side of the containing box. The defects in the prior art are overcome, dried sweet potatoes can be stirred through mutual cooperation of the placement box, the box cover, the sterilization lamp, the threaded pipe, the threaded rod, the sieve plate, the mounting frame, a first air cylinder, a second air cylinder, a stirring brush, a motor, a driving gear, a driven gear and other structures, so that the dried sweet potatoes are aired more uniformly, and meanwhile, the drying efficiency of the dried sweet potatoes is improved. And the dried sweet potatoes can be sterilized and disinfected, so that the safety of food is ensured, and the applicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the field of preparation of dried sweet potatoes, and in particular to a preparation process of highly nutritious dried sweet potatoes. Background Art

[0002] Dried sweet potatoes, also known as dried sweet potatoes or sweet potato, are traditional local specialties of Liancheng, Fujian and Shandong[1]. They are usually made by steaming a whole piece of sweet potato, peeling it, cutting it into sections, and drying it naturally. Dried sweet potatoes are in the form of slices or strips and are chewy. The production method of dried sweet potatoes is as follows: wash the sweet potatoes and steam them. After the steamed sweet potatoes are slightly cooled, peel them, cut them into slices or strips, and place them on a drying net in a well-ventilated place that can be exposed to the sun. Turn them over several times during the drying process. If the light conditions are good, they can be eaten after two days of drying. The uneaten dried sweet potatoes can be stored in a sealed container.

[0003] At present, the existing method of drying sweet potatoes is generally to place the dried sweet potatoes under the sun for drying. Since the dried sweet potatoes are exposed to the outside, bacteria are easily attached to the dried sweet potatoes, which are easy to cause harm to human health after being eaten by humans, and the applicability is poor. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a preparation process of high-nutrition dried sweet potatoes, which overcomes the deficiencies of the prior art.

[0005] 2. To achieve the above object, the present invention provides the following technical solution: A preparation process of high-nutrition dried sweet potato, comprising the following preparation process steps: S1: Prepare raw materials: S2: Slice the raw material, rinse the slices after slicing, and place the raw material in a storage box after rinsing; A box cover is provided at the upper end of the placement box, a germicidal lamp is installed on the inner wall of the placement box, a threaded tube is rotatably connected to the bottom end of the placement box, a threaded rod is threadedly connected to the threaded tube, the upper end of the threaded rod passes through the pipe mouth of the threaded tube and extends upward and is connected to a sieve plate, the sieve plate is slidably arranged on the placement box, a mounting frame is connected to the outer wall of one side of the placement box, a first cylinder is installed on the mounting frame, the output end of the first cylinder is connected to the second cylinder through a coupling, and the piston end of the second cylinder is connected to a toggle brush, a rotating assembly for driving the threaded tube to rotate is installed in the placement box, a storage box is installed on the outer wall of one side of the placement box, a box cover is rotatably connected to the upper end of the storage box, and a dust collection assembly is installed in the storage box.

[0006] By adopting the above technical scheme, when in use, the box cover is opened, the dried sweet potatoes to be dried are placed on the sieve plate, and the threaded tube is rotated by rotating the assembly. The rotation of the threaded tube will cause the threaded rod to move upward through the action of the thread, and the movement of the threaded rod will drive the sieve plate to move upward, so that the sieve plate is moved out of the placement box to dry the dried sweet potatoes, and the second cylinder is started, and the second cylinder will drive the toggle brush to move downward, so that the toggle brush abuts against the sieve plate, and then the first cylinder is started, and the first cylinder will drive the second cylinder and the toggle brush to move, and the movement of the toggle brush will toggle the dried sweet potatoes on the sieve plate, so that the dried sweet potatoes can be dried more evenly. After the dried sweet potatoes are dried, the sieve plate is placed in the placement box, and the sterilization lamp is started, and the sterilization lamp will sterilize the dried sweet potatoes. The dried sweet potatoes can be toggled through the above structure to make the dried sweet potatoes dry more evenly. At the same time, the dried sweet potatoes can be sterilized to ensure the safety of food, thereby improving the applicability of the device.

[0007] As a preferred technical solution of the present invention, the rotating assembly includes a motor fixedly installed at the bottom end of the placement box, the output end of the motor is connected to a driving gear through a coupling, a driven gear is fixedly sleeved on the wall of the threaded tube, and the driving gear is meshed with the driven gear.

[0008] By adopting the above technical solution, the motor is started, and the operation of the motor will drive the driving gear to rotate, the rotation of the driving gear will drive the driven gear to rotate, and the rotation of the driven gear will drive the threaded tube to rotate.

[0009] As a preferred technical solution of the present invention, the dust collection component includes a movable plate slidably arranged in a storage box, a vacuum cleaner is installed on the upper end of the movable plate, a dust collection tube is installed on the side wall of one side of the vacuum cleaner, a dust collection head is installed on the other end of the dust collection tube, a cleaning component is installed in the dust collection head, and a transmission component for driving the movable plate to move is installed on the placement box.

[0010] By adopting the above technical solution, when the vacuum cleaner is started, the operation of the vacuum cleaner will suck the stirred dust through the vacuum tube and the vacuum head, preventing the dust from floating in the air and causing environmental pollution.

[0011] As a preferred technical solution of the present invention, the cleaning assembly includes an electric push rod fixedly installed at the end of the dust cleaner head, the piston end of the electric push rod passes through the end of the dust cleaner head and extends inward and is connected to a cleaning block, the cleaning block is slidably set in the dust cleaner head, and the cleaning block matches the dust cleaner head.

[0012] By adopting the above technical solution, the electric push rod is started, and the operation of the electric push rod will drive the cleaning block to move. The movement of the cleaning block will scrape and clean the inner wall of the dust collector head, thereby improving the cleanliness of the inside of the dust collector head.

[0013] As a preferred technical solution of the present invention, the transmission assembly includes a transmission rod rotatably connected to a side wall of one side of the placement box, the transmission rod is arranged through the side wall of the placement box, the transmission rod and the threaded tube are connected via a bevel gear transmission, one end of the transmission rod located outside the placement box is connected to a transmission gear, and a transmission rack is slidably connected to the outer side wall of one side of the placement box, the transmission gear is meshed with the transmission rack, and the upper end of the transmission rack passes through the bottom of the storage box and is connected to the movable plate.

[0014] By adopting the above technical solution, the rotation of the threaded tube will drive the transmission rod to rotate through the bevel gear, the rotation of the transmission rod will drive the transmission gear to rotate, the rotation of the transmission gear will exert a force on the transmission rack, and the transmission rack will move vertically upward under the force, the movement of the transmission rack will drive the movable plate to move upward, the movement of the movable plate will drive the vacuum cleaner to move, when the vacuum cleaner moves to the position of the box cover, the vacuum cleaner continues to move upward to push the box cover open, and move out of the storage box, at this time, the vacuum cleaner can vacuum the surrounding environment, when the screen plate enters the placement box, the vacuum cleaner will also enter the storage box, the storage box protects the vacuum cleaner, thereby increasing the service life of the equipment.

[0015] As a preferred technical solution of the present invention, a slide groove is opened on the outer side wall of one side of the placement box, a slider is slidably connected in the slide groove, and one end of the slider passes through the slide groove notch and is connected to the transmission rack.

[0016] By adopting the above technical solution, the transmission rack is limited and the stability of the movement of the transmission rack is improved.

[0017] As a preferred technical solution of the present invention, a sliding rod is fixedly connected to the inner groove wall of the sliding groove, the sliding rod passes through the sliding block, and the sliding block is slidably connected to the sliding rod.

[0018] By adopting the above technical solution, the sliding block is prevented from being separated from the sliding groove.

[0019] As a preferred technical solution of the present invention, two limiting tubes are symmetrically connected to the bottom end of the placement box, and a limiting rod is slidably connected inside the limiting tube. The upper end of the limiting rod passes through the pipe mouth of the limiting tube and extends upward and is connected to the screen plate.

[0020] By adopting the above technical solution, the sieve plate is limited to prevent the sieve plate from rotating.

[0021] As a preferred technical solution of the present invention, a handle is installed on the upper end of the box cover.

[0022] By adopting the above technical solution, it is convenient to apply force to the box cover.

[0023] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention is provided with a placement box, a box cover, a sterilization lamp, a threaded tube, a threaded rod, a sieve plate, a mounting frame, a first cylinder, a second cylinder, a toggle brush, a motor, a driving gear and a driven gear. When in use, the box cover is opened, and the dried sweet potatoes to be dried are placed on the sieve plate. The threaded tube is rotated by the motor, the driving gear and the driven gear. The rotation of the threaded tube causes the threaded rod to move upward through the action of the thread. The movement of the threaded rod drives the sieve plate to move upward, so that the sieve plate is moved out of the placement box to dry the dried sweet potatoes. In addition, the second cylinder is started, and the second cylinder drives the threaded rod to move upward. The moving brush is moved downward to make it contact with the sieve plate, and then the first cylinder is started, the first cylinder will drive the second cylinder and the moving brush to move, and the movement of the moving brush will move the dried sweet potatoes on the sieve plate, so that the dried sweet potatoes can be dried more evenly. After the dried sweet potatoes are dried, the sieve plate is placed in the placement box, and the sterilization lamp is started, and the sterilization lamp will sterilize the dried sweet potatoes. The above structure can be used to move the dried sweet potatoes to make them more evenly dried. At the same time, the dried sweet potatoes can be sterilized to ensure the safety of food, thereby improving the applicability of the device.

[0024] (2) The present invention provides a storage box, a box cover, a movable plate, a vacuum cleaner, a vacuum tube, a vacuum head, an electric push rod, a transmission rod, a transmission gear and a transmission rack. When the vacuum cleaner is started, the operation of the vacuum cleaner will suck the stirred dust through the vacuum tube and the vacuum head, thereby preventing the dust from floating in the air and causing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the placement box in the present invention; Figure 3 It is a schematic diagram of the internal structure of the storage box in the present invention; Figure 4 It is a schematic diagram of the working structure of the transmission gear and the transmission rack in the present invention; Figure 5 for Figure 2 A magnified view of part A; Figure 6 It is a schematic diagram of the internal structure of the dust collector head in the present invention.

[0026] Description of reference numerals: 1. Placement box; 2. Box cover; 3. Germicidal lamp; 4. Threaded pipe; 5. Threaded rod; 6. Screen plate; 7. Mounting frame; 8. First cylinder; 9. Second cylinder; 10. Toggle brush; 11. Storage box; 12. Box cover; 13. Motor; 14. Driving gear; 15. Driven gear; 16. Moving plate; 17. Vacuum cleaner; 18. Vacuum tube; 19. Vacuum head; 20. Electric push rod; 21. Transmission rod; 22. Transmission gear; 23. Transmission rack; 24. Slider; 25. Sliding rod; 26. Limiting tube; 27. Limiting rod; 28. Cleaning block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-3 A preparation process of high-nutrition dried sweet potato comprises the following preparation process steps: S1: Prepare raw materials: S2: Slicing the raw material, and after slicing, rinsing the slices. After rinsing, the raw material is placed in a placement box (1); A box cover 2 is provided at the upper end of the placement box 1, and a handle is installed at the upper end of the box cover 2 for convenient application of force to the box cover 2. A sterilization lamp 3 is installed on the inner wall of the placement box 1. A threaded tube 4 is rotatably connected to the bottom end of the placement box 1. A threaded rod 5 is threadedly connected to the inner thread of the threaded tube 4. The upper end of the threaded rod 5 passes through the pipe mouth of the threaded tube 4 and extends upward and is connected to a sieve plate 6. The sieve plate 6 is slidably arranged on the placement box 1. Two limiting tubes 26 are symmetrically connected to the bottom end of the placement box 1. A limiting rod 27 is slidably connected to the limiting tube 26. The upper end of the limiting rod 27 passes through the pipe mouth of the limiting tube 26 and extends upward and is connected to the sieve plate 6 to limit the sieve plate 6 to prevent the sieve plate 6 from rotating. A mounting frame 7 is connected to the outer side wall of one side of the placement box 1. A first cylinder 8 is installed on the mounting frame 7. The output end of the first cylinder 8 is connected to the second cylinder 9 through a coupling. A toggle brush 10 is connected to the piston end of the second cylinder 9. A rotating component for driving the threaded tube 4 to rotate is installed in the placement box 1.

[0029] The rotating assembly includes a motor 13 fixedly mounted at the bottom end of the placement box 1, the output end of the motor 13 is connected to a driving gear 14 through a coupling, a driven gear 15 is fixedly sleeved on the tube wall of the threaded tube 4, and the driving gear 14 is meshed with the driven gear 15, and the motor 13 is started, and the operation of the motor 13 will drive the driving gear 14 to rotate, and the rotation of the driving gear 14 will drive the driven gear 15 to rotate, and the rotation of the driven gear 15 will drive the threaded tube 4 to rotate. When in use, the box cover 2 is opened, and the dried sweet potatoes to be dried are placed on the sieve plate 6, and the threaded tube 4 is rotated by the motor 13, the driving gear 14 and the driven gear 15, and the rotation of the threaded tube 4 will cause the threaded rod 5 to move upward through the action of the thread, and the movement of the threaded rod 5 will drive the sieve plate 6 to move upward, so that the sieve plate 6 is moved out of the placement box 1 to dry the dried sweet potatoes; Start the second cylinder 9, the second cylinder 9 will drive the moving brush 10 to move downward, so that the moving brush 10 will contact the sieve plate 6, and then start the first cylinder 8, the first cylinder 8 will drive the second cylinder 9 and the moving brush 10 to move, the movement of the moving brush 10 will move the dried sweet potatoes on the sieve plate 6, so that the dried sweet potatoes can be dried more evenly. After the dried sweet potatoes are dried, the sieve plate 6 is placed in the placement box 1, and the sterilization lamp 3 is started, and the sterilization lamp 3 will sterilize the dried sweet potatoes. The dried sweet potatoes can be moved through the upper structure to make the dried sweet potatoes dried more evenly. At the same time, the dried sweet potatoes can be sterilized to ensure the safety of food, thereby improving the applicability of the device.

[0030] A storage box 11 is installed on the outer wall of one side of the placement box 1, and a box cover 12 is rotatably connected to the upper end of the storage box 11. A dust collection assembly is installed in the storage box 11, and the dust collection assembly includes a movable plate 16 slidably arranged in the storage box 11, and a dust collector 17 is installed on the upper end of the movable plate 16. A dust collection pipe 18 is installed on the side wall of one side of the dust collector 17, and a dust collection head 19 is installed at the other end of the dust collection pipe 18. A cleaning assembly is installed in the dust collection head 19. A transmission assembly for driving the movable plate 16 to move is installed on the placement box 1. When the vacuum cleaner 17 is started, the operation of the vacuum cleaner 17 will vacuum the stirred dust through the dust collection pipe 18 and the dust collection head 19 to prevent the dust from floating in the air and causing environmental pollution.

[0031] For details, see Figure 2-4 and Figure 6, the cleaning component includes an electric push rod 20 fixedly installed at the end of the suction head 19. The piston end of the electric push rod 20 penetrates through the end of the suction head 19 and extends inward, and is connected with a cleaning block 28. The cleaning block 28 is slidably arranged in the suction head 19 and matches the suction head 19. When the electric push rod 20 is started, the operation of the electric push rod 20 will drive the cleaning block 28 to move. The movement of the cleaning block 28 will scrape and clean the inner wall of the suction head 19, thereby improving the cleanliness inside the suction head 19.

[0032] The transmission component includes a transmission rod 21 rotatably connected to one side wall of the placement box 1. The transmission rod 21 passes through the side wall of the placement box 1. The transmission rod 21 and the threaded tube 4 are connected by bevel gears. One end of the transmission rod 21 located outside the placement box 1 is connected with a transmission gear 22. A transmission rack 23 is slidably connected to the outer side wall of one side of the placement box 1. The transmission gear 22 meshes with the transmission rack 23. The upper end of the transmission rack 23 passes through the bottom of the storage box 11 and is connected with the moving plate 16.

[0033] Specifically, refer to Figure 2 and Figure 5 , a chute is opened on the outer side wall of one side of the placement box 1. A slider 24 is slidably connected in the chute. One end of the slider 24 passes through the chute opening and is connected to the transmission rack 23 to limit the transmission rack 23 and improve the stability of the movement of the transmission rack 23. A slide rod 25 is fixedly connected to the inner wall of the chute. The slide rod 25 penetrates through the slider 24, and the slider 24 is slidably connected to the slide rod 25 to prevent the slider 24 from detaching from the chute.

[0034] The rotation of the threaded tube 4 will drive the transmission rod 21 to rotate through the bevel gear. The rotation of the transmission rod 21 will drive the transmission gear 22 to rotate. The rotation of the transmission gear 22 will exert a force on the transmission rack 23. The transmission rack 23 will move vertically upward under the action of the force. The movement of the transmission rack 23 will drive the moving plate 16 to move upward. The movement of the moving plate 16 will drive the vacuum cleaner 17 to move. When the vacuum cleaner 17 moves to the position of the box cover 12, the vacuum cleaner 17 will continue to move upward to push open the box cover 12 and move out of the storage box 11. At this time, the vacuum cleaner 17 can suck the surrounding environment. When the sieve plate 6 enters the placement box 1, the vacuum cleaner 17 will also enter the storage box 11. The storage box 11 protects the vacuum cleaner 17, thereby improving the service life of the equipment.

[0035] Working principle: when in use, open the box cover 2, place the dried sweet potatoes that need to be dried on the sieve plate 6, and rotate the threaded tube 4 by rotating the assembly. The rotation of the threaded tube 4 will cause the threaded rod 5 to move upward through the action of the thread, and the movement of the threaded rod 5 will drive the sieve plate 6 to move upward, so that the sieve plate 6 is moved out of the placement box 1 to dry the dried sweet potatoes, and start the second cylinder 9, the second cylinder 9 will drive the tossing brush 10 to move downward, so that the tossing brush 10 contacts the sieve plate 6, and then start the first cylinder 8, the first cylinder 8 will drive the second cylinder 9 and the tossing brush 10 to move, and the movement of the tossing brush 10 will toss the dried sweet potatoes on the sieve plate 6, so that the dried sweet potatoes can be dried more evenly. After the dried sweet potatoes are dried, the sieve plate 6 is put into the placement box 1, and the sterilization lamp 3 is started, and the sterilization lamp 3 will sterilize the dried sweet potatoes.

[0036] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preparation process of high-nutrition sweet potato chips, characterized in that: The preparation process comprises the following steps: S1: Prepare raw materials: S2: Slicing the raw material, and after slicing, rinsing the slices. After rinsing, the raw material is placed in a placement box (1); The upper end of the placement box (1) is provided with a box cover (2), the inner wall of the placement box (1) is provided with a sterilizing lamp (3), the inner bottom end of the placement box (1) is rotatably connected to a threaded tube (4), the inner thread of the threaded tube (4) is connected to a threaded rod (5), the upper end of the threaded rod (5) passes through the pipe mouth of the threaded tube (4) and extends upward and is connected to a sieve plate (6), the sieve plate (6) is slidably provided on the placement box (1), and the outer wall of one side of the placement box (1) is connected to a mounting frame (7), A first cylinder (8) is mounted on the mounting frame (7); an output end of the first cylinder (8) is connected to a second cylinder (9) via a coupling; a piston end of the second cylinder (9) is connected to a moving brush (10); a rotating assembly for driving the threaded tube (4) to rotate is mounted in the placement box (1); a storage box (11) is mounted on an outer wall of one side of the placement box (1); a box cover (12) is rotatably connected to the upper end of the storage box (11); and a dust collection assembly is mounted in the storage box (11).

2. The preparation process of a highly nutritious dried sweet potato according to claim 1, characterized in that: The rotating assembly comprises a motor (13) fixedly mounted at the bottom end of the placement box (1); the output end of the motor (13) is connected to a driving gear (14) via a coupling; a driven gear (15) is fixedly sleeved on the wall of the threaded tube (4), and the driving gear (14) is meshed with the driven gear (15).

3. The preparation process of a highly nutritious dried sweet potato according to claim 1, characterized in that: The dust collection component comprises a movable plate (16) slidably arranged in the storage box (11); a dust collector (17) is mounted on the upper end of the movable plate (16); a dust collection pipe (18) is mounted on a side wall of one side of the dust collector (17); a dust collection head (19) is mounted on the other end of the dust collection pipe (18); a cleaning component is mounted in the dust collection head (19); and a transmission component for driving the movable plate (16) to move is mounted on the placement box (1).

4. The preparation process of a highly nutritious dried sweet potato according to claim 3, characterized in that: The cleaning assembly comprises an electric push rod (20) fixedly mounted on the end of a dust collector head (19); a piston end of the electric push rod (20) penetrates the end of the dust collector head (19) and extends inwardly and is connected to a cleaning block (28); the cleaning block (28) is slidably disposed in the dust collector head (19), and the cleaning block (28) matches the dust collector head (19).

5. The preparation process of a highly nutritious dried sweet potato according to claim 3, characterized in that: The transmission assembly comprises a transmission rod (21) rotatably connected to a side wall of one side of the placement box (1); the transmission rod (21) is arranged through the side wall of the placement box (1); the transmission rod (21) and the threaded tube (4) are connected via a bevel gear transmission; one end of the transmission rod (21) located outside the placement box (1) is connected to a transmission gear (22); a transmission rack (23) is slidably connected to the outer wall of one side of the placement box (1); the transmission gear (22) meshes with the transmission rack (23); and the upper end of the transmission rack (23) passes through the bottom of the storage box (11) and is connected to the movable plate (16).

6. The preparation process of a highly nutritious sweet potato chip according to claim 5, characterized in that: A chute is formed in the outer side wall of one side of the placement box (1), and a slider (24) is slidably connected in the chute. One end of the slider (24) passes through the chute opening and is connected to the transmission rack (23).

7. The preparation process of a highly nutritious dried sweet potato according to claim 6, characterized in that: A slide bar (25) is fixedly connected to the inner wall of the chute. The slide bar (25) penetrates through the slider (24), and the slider (24) is slidably connected to the slide bar (25).

8. The preparation process of a highly nutritious sweet potato chip according to claim 1, characterized in that: Two limiting tubes (26) are symmetrically connected to the inner bottom end of the placement box (1). A limiting rod (27) is slidably connected in the limiting tube (26). The upper end of the limiting rod (27) passes through the pipe opening of the limiting tube (26) and extends upward and is connected to the sieve plate (6).

9. The preparation process of a highly nutritious dried sweet potato according to claim 1, characterized in that: A handle is installed on the upper end of the box cover (2).

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