White lotus drying device and working method

Abstract

The application discloses a white lotus drying device and a working method, which comprises a baking oven, and an inner circulation heating structure, a temperature control structure, a humidity control structure and a visual detection structure are arranged on the inner side of the baking oven. The application relates to the technical field of white lotus production, and has the beneficial effect that the inner circulation heating structure adjusts the heating position according to the temperature change of the inner side of the baking oven, several high-temperature heating metal rods heat the air between the several heating drying plates, the high-temperature gas on the inner side of the baking oven is introduced to the bottom end of the inner side of the baking oven, so that the air is heated in a circulating manner, the heat is dissipated when the temperature is too high through the temperature air structure, and the moisture is drained through the humidity control structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the production technology field of white lotus, in particular to a white lotus drying device and working method. BACKGROUND

[0002] White lotus is a characteristic agricultural product in many places in China. Its planting and processing have a very long history in China. After careful processing, the lotus seed is oval, large and full, white and round, delicious and sweet, and fragrant and refreshing. Lotus seed is high in nutritional value and can be used as medicine. White lotus is sold at home and abroad and is popular in Southeast Asia. The drying quality of white lotus directly affects the quality of white lotus.

[0003] The existing white lotus drying equipment mainly has the following problems: 1. Low production efficiency. The existing traditional white lotus drying method requires artificial supervision, artificial fuel addition and control of the size of the moisture outlet during the drying process. The amount of white lotus dried at a time is limited, and the temperature and humidity are not easy to control. This not only wastes a lot of human resources and time cost, but also can only dry a small amount of lotus seed at a time. 2. Low automation. The existing white lotus dryer mostly has fixed drying temperature and time during the drying process. This drying method is prone to over-drying and under-drying, which can cause damage to the lotus seed and low quality. 3. High energy consumption. The existing white lotus drying mainly uses drying room, dehydration dryer and other medicinal material dryers. The drying room and dehydration dryer use charcoal fire for baking, which has low utilization rate and wastes energy. Although the other medicinal material dryer can achieve automatic drying, it has high power and high energy consumption, and consumes a lot of energy to dry white lotus. In view of the above problems, the present application is developed. SUMMARY

[0004] To achieve the above-mentioned purpose, the technical solution of the present application is as follows: a white lotus drying device, comprising: a baking oven, an inner side of the baking oven is provided with an inner circulation heating structure, a temperature control structure, a humidity control structure and a visual detection structure;

[0005] The inner circulation heating structure comprises: a drying support, a plurality of back-shaped supporting blocks, a plurality of heating drying plates, a gas suction pump, a circulation shunt pipe, a pair of circulation lifting pipes, a pair of concave heating limiting blocks, a pair of back-shaped extrusion air pads, a pair of heating convex extrusion blocks, a pair of coiled inductance rods, a plurality of heating metal rods, a lifting adjusting assembly and a pressure adjusting sealing assembly;

[0006] The drying support is mounted on the inner side of the baking oven, a plurality of the back-shaped supporting blocks are mounted on the inner side of the drying support, a plurality of the heating drying plates are movably arranged on the back-shaped supporting blocks, the air pump is mounted on the inner side of the baking oven, the circulating shunt pipe is mounted on the inner side of the baking oven, a pair of the circulating lifting pipes are oppositely and parallelly mounted on the inner side of the baking oven, and the circulating lifting pipes are connected to the circulating shunt pipe, a pair of the concave heating limiting blocks are mounted on the circulating lifting pipes through the lifting adjusting assembly, a pair of the back-shaped extrusion air cushion pads are respectively mounted on the inner sides of the concave heating limiting blocks, a pair of the heating convex extrusion blocks are respectively mounted on the back-shaped extrusion air cushion pads, a pair of the coiled inductive rods are respectively inserted into the heating convex extrusion blocks, a plurality of the heating metal rods are respectively and uniformly inserted into the heating convex extrusion blocks, and the pressure adjusting sealing assembly is mounted on the baking oven.

[0007] Preferably, the temperature control structure comprises a plurality of U-shaped drainage pipes, back-shaped air supply pipes, air supply pumps, a plurality of horn-shaped gathering pieces and a plurality of temperature sensors.

[0008] The U-shaped drainage pipes are uniformly inserted into the sidewalls of the baking oven, the back-shaped air supply pipes are mounted on the U-shaped drainage pipes, the back-shaped air supply pipes are mounted on the U-shaped drainage pipes, the air supply pumps are mounted on the back-shaped air supply pipes, the horn-shaped gathering pieces are respectively mounted on the U-shaped drainage pipes, and the temperature sensors are uniformly mounted on the inner side of the baking oven.

[0009] Preferably, the humidity control structure comprises a humidity sensor, a drainage valve, a steam drainage pipe, a convex humidity adjusting box, a filter collecting inner box, filter cotton, a discharging L-shaped pipe, a collecting box and collecting cotton.

[0010] The humidity sensor is mounted on the inner side of the baking oven, the drainage valve is mounted on the top end of the baking oven, the steam drainage pipe is mounted on the drainage valve, the convex humidity adjusting box is mounted on the baking oven and connected to the steam drainage pipe, the filter collecting inner box is movably inserted into the inner side of the convex humidity adjusting box, the filter cotton is arranged on the filter collecting inner box, the collecting box is mounted on the outer side of the baking oven, the collecting cotton is arranged on the inner side of the collecting box, and the discharging L-shaped pipe is connected to the collecting box and the filter collecting inner box.

[0011] Preferably, the visual detection structure comprises a scanning camera and a color identifier.

[0012] The scanning camera is mounted on the lifting adjusting assembly, and the color identifier is mounted on the baking oven.

[0013] Preferably, the lifting adjusting assembly comprises two pairs of lifting sliders, a lifting recessed block, a lifting driving shaft, two pairs of lifting stretching ropes, a lifting driving machine and three flow dividing discs.

[0014] The baking oven is internally provided with two pairs of lifting slides, two pairs of the lifting sliders are respectively mounted on the two sides of a pair of the recessed heating limiting blocks, and are respectively movably inserted into the inner sides of the two pairs of the lifting slides, the lifting recessed block is mounted on the inner side of the baking oven, the lifting driving shaft is inserted into the lifting recessed block, the driving end of the lifting driving machine is connected to the lifting driving shaft, three flow dividing discs are uniformly mounted on the lifting driving shaft, and two pairs of the stretching ropes are mounted on the lifting driving shaft and a pair of the recessed heating limiting blocks.

[0015] Preferably, the pressure adjusting sealing assembly comprises a sealing plate, a sealing shaft, a back-shaped sealing air cushion, a sealing rubber pad and a sealing air pump.

[0016] The sealing plate is inserted into the baking oven through the sealing shaft, the back-shaped sealing air cushion is mounted on the inner side of the baking oven, the sealing rubber pad is mounted on the back-shaped sealing air cushion, and the sealing air pump is connected to the back-shaped sealing air cushion.

[0017] Preferably, the inner side of the L-shaped discharging pipe is provided with a non-return inner block.

[0018] Preferably, the scanning camera is mounted on a pair of the recessed heating limiting blocks.

[0019] Preferably, the scanning camera is provided with a protective glass.

[0020] Preferably, the U-shaped drainage pipes are respectively provided with heat radiating fins.

[0021] The white lotus drying device prepared by the technical scheme of the present application can adjust the heating position according to the temperature change of the inner side of the baking oven through the internal circulation heating structure, heat the air between the high-temperature heating metal rods and the heating drying plates, drain the high-temperature gas in the inner side of the baking oven to the bottom end of the inner side of the baking oven, thereby achieving circulation heating, and simultaneously release the heat when the temperature is too high through the temperature air structure, and drain the moisture through the humidity control structure. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the white lotus drying device.

[0023] Figure 2 A side view structural schematic diagram of the white lotus drying device.

[0024] Figure 3 A top view structural schematic diagram of the white lotus drying device.

[0025] Figure 4 A Figure 1 An enlarged view of part "A".

[0026] Figure 5 A Figure 2 An enlarged view of part "B".

[0027] Figure 6 A schematic diagram of the white lotus drying before the invention.

[0028] Figure 7 A schematic diagram of the white lotus drying after the invention.

[0029] In the figure: 1, baking oven; 2, drying support; 3, back-shaped supporting block; 4, heating drying plate; 5, air pump; 6, circulating shunt pipe; 7, circulating lifting pipe; 8, concave heating limiting block; 9, back-shaped extrusion air cushion; 10, heating convex extrusion block; 11, coiled inductance rod; 12, heating metal rod; 13, U-shaped drainage pipe; 14, back-shaped air cushion pipe; 15, air pump; 16, horn-shaped gathering piece; 17, drainage valve; 18, steam drainage pipe; 19, convex humidity adjusting box; 20, shunt disc; 21, filter collection inner box; 22, filter cotton; 23, L-shaped unloading pipe; 24, collection box; 25, collection cotton; 26, lifting slide block; 27, lifting concave block; 28, lifting drive shaft; 29, lifting stretching rope; 30, lifting drive machine. DETAILED DESCRIPTION

[0030] Through the personnel in the art, all electrical components in the case and their adapted power supply are connected by wires, and appropriate controllers should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should be referred to the working principle below to complete the electrical connection process according to the working order of each electrical component. The detailed connection means is a well-known technology in the art, and the working principle and process are mainly introduced below, and the electrical control is not described. EMBODIMENT

[0031] As Figures 1 to 5 shown, the inside of the baking oven 1 is provided with an internal circulation heating structure, a temperature control structure, a humidity control structure, and a visual detection structure;

[0032] Specifically, the inner circulation heating structure comprises a drying support 2, a plurality of back-shaped support blocks 3, a plurality of heating drying plates 4, an air pump 5, a circulation shunt pipe 6, a pair of circulation lifting pipes 7, a pair of concave heating limiting blocks 8, a pair of back-shaped extrusion inflatable pads 9, a pair of heating convex extrusion blocks 10, a pair of coiled inductive rods 11, a plurality of heating metal rods 12, a lifting adjusting assembly, and a pressure adjusting and sealing assembly.

[0033] Specifically, the drying support 2 is installed on the inner side of the baking oven 1, a plurality of the back-shaped support blocks 3 are installed on the inner side of the drying support 2, a plurality of the heating drying plates 4 are movably arranged on the back-shaped support blocks 3, the air pump 5 is installed on the inner side of the baking oven 1, the circulation shunt pipe 6 is installed on the inner side of the baking oven 1, a pair of the circulation lifting pipes 7 are installed on the inner side of the baking oven 1 in parallel, and the circulation lifting pipes 7 are connected to the circulation shunt pipe 6, a pair of the concave heating limiting blocks 8 are installed on the circulation lifting pipes 7 through the lifting adjusting assembly, a pair of the back-shaped extrusion inflatable pads 9 are respectively installed on the inner sides of the concave heating limiting blocks 8, a pair of the heating convex extrusion blocks 10 are respectively installed on the back-shaped extrusion inflatable pads 9, a pair of the coiled inductive rods 11 are respectively inserted into the heating convex extrusion blocks 10, a plurality of the heating metal rods 12 are respectively and uniformly inserted into the heating convex extrusion blocks 10, and the pressure adjusting and sealing assembly is installed on the baking oven 1.

[0034] In use, the lotus is placed on the plurality of heating drying plates 4, the plurality of heating drying plates 4 are arranged on the plurality of back-shaped support blocks 3, the air pump 5 is used to guide the air at the top of the baking oven 1 to the inner side of the circulation shunt pipe 6, the circulation shunt pipe 6 is used to guide the air at the top to the inner side of the pair of circulation lifting pipes 7, the circulation lifting pipes 7 are used to guide the air at the top to the bottom of the inner side of the baking oven 1, the high-temperature air has low density and moves upward, the high-temperature air at the top is guided to the low-temperature air at the bottom, the pair of concave heating limiting blocks 8 are lifted by the lifting adjusting assembly, the pair of back-shaped extrusion inflatable pads 9 are inflated, and the circulation effect is achieved, the high-temperature air is circulated in the inner side of the baking oven, the phenomenon that the baking effects of the upper layer and the lower layer are different is avoided, the pair of back-shaped extrusion inflatable pads 9 drive the heating convex extrusion blocks 10 to horizontally expand and contract, the pair of heating convex extrusion blocks 10 are inserted between the pair of heating drying plates 4, the plurality of heating metal rods 12 are heated by the pair of coiled inductive rods 11, the air between the pair of heating drying plates 4 is heated by the plurality of high-temperature heating metal rods 12, and the air between the plurality of heating drying plates 4 is heated according to different requirements.

[0035] As Figures 1 to 5The temperature control structure includes U-shaped drainage pipes 13, a back-shaped air pipe 14, an air pump 15, horn-shaped gathering pieces 16, and temperature sensors.

[0036] Specifically, the U-shaped drainage pipes 13 are evenly inserted into the side wall of the baking oven 1, the back-shaped air pipe 14 is installed on the U-shaped drainage pipes 13, the air pump 15 is installed on the back-shaped air pipe 14, the horn-shaped gathering pieces 16 are respectively installed on the U-shaped drainage pipes 13, and the temperature sensors are evenly installed on the inside of the baking oven.

[0037] In use, the back-shaped air pipe 14 is inflated by the air pump 15, the U-shaped drainage pipes 13 are inflated by the back-shaped air pipe 14, the inside air of the U-shaped drainage pipes 13 is driven by the high-pressure gas, the gas flow speed inside the U-shaped drainage pipes 13 is accelerated, and the heat inside the baking oven 1 is quickly cooled.

[0038] As shown in Figure 2 The humidity control structure includes a humidity sensor, a drainage valve 17, a steam drainage pipe 18, a convex humidity adjusting box 19, a filter collection inner box 21, filter cotton 22, a discharge L-shaped pipe 23, a collection box 24, and collection cotton 25.

[0039] Specifically, the humidity sensor is installed on the inside of the baking oven 1, the drainage valve 17 is installed on the top end of the baking oven 1, the steam drainage pipe 18 is installed on the drainage valve 17, the convex humidity adjusting box 19 is installed on the baking oven 1 and connected to the steam drainage pipe 18, the filter collection inner box 21 is movably inserted into the inside of the convex humidity adjusting box 19, the filter cotton 22 is arranged on the filter collection inner box 21, the collection box 24 is installed on the outside of the baking oven 1, the collection cotton 25 is arranged on the inside of the collection box 24, and the discharge L-shaped pipe 23 is connected to the collection box 24 and the filter collection inner box 21.

[0040] In use, the high-temperature steam inside the baking oven 1 is drained into the inside of the steam drainage pipe 18 by opening the drainage valve 17, the moisture inside the steam is drained into the inside of the convex humidity adjusting box 19 by the steam drainage pipe 18, the moisture in the water vapor is absorbed by the filter collection inner box 21 and the filter cotton 22 inside the convex humidity adjusting box 19, the moisture inside the filter collection inner box 21 is drained into the inside of the collection box 24 by the discharge L-shaped pipe 23, and the moisture is absorbed by the collection cotton 25 inside the collection box 24.

[0041] As shown in Figures 1 to 5 , the visual detection structure comprises a scanning camera and a color identifier;

[0042] Specifically, the scanning camera is installed on the lifting adjusting assembly, and the color identifier is installed on the baking oven 1.

[0043] In use, the scanning camera on the pair of concave heating limiting blocks 8 is vertically lifted, and the video recognition of the white lotus between the plurality of heating drying plates 4 is performed by the color identifier.

[0044] The video recognition process is also an image analysis and judgment process, which performs white lotus drying image recognition according to the color difference of different drying degrees of the pre-stored white lotus;

[0045] As shown in Figure 6 and 7 , the white lotus drying image is subjected to color gradient processing to obtain a gradient feature calculation model of the white lotus drying image;

[0046] The initial white lotus drying color and the white lotus color at a specific drying time are extracted respectively, the initial stage and the specific time stage of the white lotus in a specific area are subjected to image segmentation, the number of pixel point sets in the segmented area is n, the RGB mean value M of the pixel points in the area is calculated, the standard deviation of M of the segmented area is calculated respectively for the initial stage and the specific drying time stage, a color differentiation threshold S is set, if the color standard deviation of each area is less than the threshold S, it is determined that the drying is not completed, and the segmented area is subjected to re-drying.

[0047] During the re-drying process, the area color difference calculation is performed in the segmented area, the pixel chroma value set of the extracted segmented area is calculated, the color difference gradient feature map of the segmented area image is identified, the image subjected to color equalization processing is scaled to obtain a color difference scaling image, since the color of the white lotus drying image content is relatively single, the scaling image is used to reduce the calculation and recognition amount, the scaling image is subjected to chroma extraction to obtain a chroma feature map, and the scaling image and the chroma extraction map are fused into a color difference gradient feature map.

[0048] By ;

[0049] , the operator represents XOR, so is a binary variable, is the chroma change value of the pixel at the preset drying time t+1, wherein n is the pixel point number index; if the color difference cannot reach the preset target, then , at this time, the drying progress continues; if the color difference reaches the preset target, then At this time, it is not necessary to continue drying; through the optimization calculation, the drying duration and the maintenance of the drying effect are dynamically changed, and then the value of the discrimination degree is calculated :

[0050]

[0051] In the formula: is the pixel value of the i-th drying chroma meeting the preset requirement, m is the number of pixels meeting the requirement, and n is a positive integer, is the current drying chroma value, represents the maximum drying chroma value; as can be seen from the above formula, when is very large, thus is relatively small, indicating that the drying is not complete, and during the drying process, becomes larger, becomes smaller, resulting in becomes larger, indicating that the drying progress is close to the target chroma.

[0052] As shown in Figures 1 to 5 , the lifting adjusting assembly comprises two pairs of lifting sliders 26, a lifting concave block 27, a lifting drive shaft 28, two pairs of lifting stretching ropes 29, a lifting drive machine 30, and three shunt discs 20.

[0053] Specifically, two pairs of lifting slides are provided on the inner side of the computer of the baking oven 1, two pairs of the lifting sliders 26 are installed on the two sides of the concave heating limiting blocks 8, and the two pairs of the lifting sliders 26 are respectively movably inserted into the inner sides of the two pairs of the lifting slides, the lifting concave block 27 is installed on the inner side of the baking oven 1, the lifting drive shaft 28 is inserted into the lifting concave block 27, the driving end of the lifting drive machine 30 is connected to the lifting drive shaft 28, and three shunt discs 20 are uniformly installed on the lifting drive shaft 28, and two pairs of the stretching ropes are installed on the lifting drive shaft 28 and a pair of the concave heating limiting blocks 8.

[0054] In use, the lifting drive machine 30 drives the lifting drive shaft 28 on the lifting concave block 27 to rotate, the two pairs of the lifting stretching ropes 29 on the lifting drive shaft 28 are driven, one pair of the concave heating limiting blocks 8 on the two pairs of the lifting stretching ropes 29 are vertically lifted, and one pair of the concave heating limiting blocks 8 are stably lifted through the cooperation of the two pairs of the lifting sliders 26 and the two pairs of the lifting slides, and the two pairs of the lifting stretching ropes 29 are separated through the three shunt discs 20 on the lifting drive shaft 28, so as to achieve stable stretching and separation.

[0055] As shown in Figures 1 to 5 , the pressure adjusting and sealing assembly comprises a sealing plate, a sealing shaft, a back-shaped sealing air cushion, a sealing rubber pad, and a sealing air pump 15.

[0056] Specifically, the sealing plate is inserted on the baking oven 1 through the sealing shaft, the L-shaped sealing air cushion is installed on the inner side of the baking oven 1, the sealing rubber pad is installed on the L-shaped sealing air cushion, and the sealing air pump 15 is connected to the L-shaped sealing air cushion.

[0057] In use, the L-shaped sealing air cushion is inflated by the sealing air pump 15, the sealing plate is inflated by the L-shaped sealing air cushion, and the baking oven 1 is inflated and fixed by the sealing plate, so that the phenomenon of air leakage is avoided.

[0058] As a preferred solution, further, the inner side of the L-shaped discharging pipe 23 is provided with a non-return inner block.

[0059] As a preferred solution, further, the scanning camera is installed on a pair of the concave heating limiting blocks 8.

[0060] As a preferred solution, further, the scanning camera is provided with a protective glass.

[0061] As a preferred solution, further, a plurality of the U-shaped drainage pipes 13 are respectively provided with radiating fins.

[0062] The above technical solution only reflects the preferred technical solution of the present application, and some changes made by the person skilled in the art to some parts of the present application also reflect the principle of the present application and are within the protection scope of the present application.

Claims

1. A white lotus drying device, comprising: A baking oven, characterized in that an internal circulation heating structure, a temperature control structure, a humidity control structure and a visual detection structure are installed on the inner side of the baking oven; The internal circulation heating structure includes: a drying bracket, a plurality of circular support blocks, a plurality of heating drying plates, an air extraction pump, a circulation shunt pipe, a pair of circulation lifting pipes, a pair of concave heating limit blocks, a pair of circular extrusion air cushions, a pair of heating convex extrusion blocks, a pair of coiled induction rods, a plurality of heating metal rods, a lifting and lowering adjustment component, and a pressure regulating and sealing component. The lifting adjustment assembly includes: two pairs of lifting slide blocks, a lifting concave block, a lifting drive shaft, two pairs of lifting stretch ropes, a lifting drive motor and three diverter discs; Two pairs of lifting slides are provided on the inside of the baking oven, the two pairs of lifting sliders are respectively installed on both sides of a pair of concave heating limit blocks, and the two pairs of lifting sliders are movably inserted into the inner sides of the two pairs of lifting slides, the lifting concave blocks are installed on the inner side of the baking oven, the lifting drive shaft is inserted on the lifting concave blocks, the driving end of the lifting drive motor is connected to the lifting drive shaft, the three diverter discs are evenly installed on the lifting drive shaft, and the two pairs of lifting stretch ropes are installed on the lifting drive shaft and a pair of concave heating limit blocks; The drying bracket is installed on the inner side of the baking oven, a plurality of the circular support blocks are installed on the inner side of the drying bracket, a plurality of the heating and drying plates are movably arranged on the plurality of the circular support blocks, the exhaust pump is installed on the inner side of the baking oven, the circulation shunt pipe is installed on the inner side of the baking oven, a pair of the circulation lifting pipes are installed relatively parallel to the inner side of the baking oven, and the pair of the circulation lifting pipes are connected to the circulation shunt pipe, a pair of the concave heating limit blocks are installed on the pair of circulation lifting pipes through the lifting adjustment assembly, a pair of the circular extrusion inflatable pads are respectively installed on the inner sides of the pair of the concave heating limit blocks, a pair of the heating convex extrusion blocks are respectively installed on the pair of the circular extrusion inflatable pads, a pair of the coiled inductive rods are respectively inserted into the pair of the heating convex extrusion blocks, a plurality of the heating metal rods are respectively and evenly inserted into the pair of the heating convex extrusion blocks, a pair of the circular extrusion inflatable pads drives the heating convex extrusion blocks thereon to expand and retract horizontally, and the pressure regulating sealing assembly is installed on the baking oven.

2. A white lotus drying device according to claim 1, characterized in that: The temperature control structure includes: a plurality of U-shaped drainage tubes, a circular inflation tube, an inflation pump, a plurality of trumpet-shaped gathering pieces and a plurality of temperature sensors; Several U-shaped drainage tubes are evenly inserted on the side walls of the baking oven, the circular inflation tubes are installed on several U-shaped drainage tubes, the inflation pump is installed on the circular inflation tubes, several trumpet-shaped gathering plates are respectively installed on several U-shaped drainage tubes, and several temperature sensors are evenly installed on the inner side of the baking oven.

3. A white lotus drying device according to claim 2, characterized in that: The humidity control structure includes: a humidity sensor, a drainage valve, a steam drainage pipe, a convex humidity adjustment box, a filter collection inner box, filter cotton, a discharge L-shaped pipe, a collection box and collection cotton; The humidity sensor is installed on the inner side of the baking oven, the drainage valve is installed on the top of the baking oven, the steam drainage pipe is installed on the drainage valve, the convex humidity conditioning box is installed on the baking oven, and the convex humidity conditioning box is connected to the steam drainage pipe, the filter collection inner box is movably inserted on the inner side of the convex humidity conditioning box, the filter cotton is placed on the filter collection inner box, the collection box is installed on the outside of the baking oven, the collection cotton is placed on the inside of the collection box, and the unloading L-shaped pipe is connected to the collection box and the filter collection inner box.

4. A white lotus drying device according to claim 3, characterized in that: The visual detection structure includes: a scanning camera and a color recognizer; The scanning camera is installed on the lifting and adjusting component, and the color identifier is installed on the baking oven.

5. The white lotus drying device according to claim 4, characterized in that: The pressure regulating sealing assembly includes: a sealing plate, a sealing shaft, a circular sealing air cushion, a sealing rubber cushion and a sealing air pump; The sealing plate is inserted into the baking oven through a sealing shaft, the circular sealing air cushion is installed on the inner side of the baking oven, the sealing rubber pad is installed on the circular sealing air cushion, and the sealing air pump is connected to the circular sealing air cushion.

6. The white lotus drying device according to claim 5, characterized in that: A non-return inner block is provided on the inner side of the unloading L-shaped tube; the scanning camera is installed on a pair of the concave heating limit blocks; a protective glass is provided on the scanning camera; and heat sinks are respectively provided on several of the U-shaped drainage tubes.

7. A method for drying white lotus based on the device according to claim 6, characterized in that: The steps include: S1, by placing white lotus on several heating and drying plates, and placing the several heating and drying plates on several circular support blocks respectively, the air at the top of the baking oven is drained to the inner side of the circulation shunt pipe by an air pump, and the top air is drained to the inner side of a pair of circulation lifting pipes by the circulation lifting pipe, and the top air is drained to the bottom end of the baking oven by the circulation lifting pipe. The high-temperature air has a low density and moves upward, and the high-temperature gas at the top is drained to the low-temperature gas at the bottom. The pair of concave heating limit blocks are driven to rise and fall by the lifting adjustment component, and the pair of circular extrusion inflatable cushions are expanded, and the pair of circular extrusion inflatable cushions drive the heating convex extrusion blocks thereon to expand and retract horizontally, and the pair of heating convex extrusion blocks are inserted between the pair of heating and drying plates, and the plurality of heating metal rods are respectively inductively heated by a pair of coiled induction rods, so that the air between the pair of heating and drying plates is heated by the plurality of high-temperature heating metal rods, thereby heating the air between the plurality of heating and drying plates according to different heating requirements; S2, inflating the circular inflation tube with an air pump, and inflating the plurality of U-shaped drainage tubes through the circular inflation tube, the high-pressure gas drives the air inside the plurality of U-shaped drainage tubes, thereby accelerating the flow speed of the gas inside the plurality of U-shaped drainage tubes, thereby achieving rapid cooling of the heat inside the oven; S3, by opening the drainage valve, the high-temperature steam inside the baking oven is drained into the inner side of the steam drainage pipe, and the moisture inside the steam is drained into the inner side of the convex humidity conditioning box through the steam drainage pipe. The moisture in the steam is absorbed by the filter collection inner box and the filter cotton inside the convex humidity conditioning box. The moisture inside the filter collection inner box is drained into the inner side of the collection box through the discharge L-shaped pipe, and the moisture is absorbed by the collection cotton inside the collection box. S4, a pair of concave heating limit blocks drives the scanning camera on them to move vertically up and down, and uses a color recognizer to perform video recognition of white lotus between several heating and drying plates; S5, drives the lifting drive shaft on the lifting concave block to rotate through the lifting drive machine, drives the two pairs of lifting stretching ropes on it through the lifting drive shaft, drives the pair of concave heating limit blocks on it to be vertically lifted and lowered through the two pairs of lifting stretching ropes, and achieves stable lifting of the pair of concave heating limit blocks through the cooperation of the two pairs of lifting sliders and the two pairs of lifting slides, and drives the three diversion discs on it to separate the two pairs of lifting stretching ropes through the lifting drive shaft, thereby achieving stable stretching and separation.

8. The white lotus drying method according to claim 7, characterized in that: The video recognition process in S4 includes: The initial white lotus color and the white lotus color at a specific drying time are extracted respectively, and the image of the white lotus in a specific area at the initial stage and the specific time stage is segmented. The number of pixel points in the segmented area is n, and the RGB mean M of the pixels in the area is calculated. The standard deviation of the segmented area M is calculated for the initial stage and the specific drying time stage respectively, and a color discrimination threshold S is set. If the color standard deviation of each area is less than the threshold S, it is determined that drying is not complete, and the segmented area is dried again.

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