Drying device that uses hot air to penetrate the material

Abstract

The present invention discloses a drying device that utilizes hot air to penetrate materials, comprising more than one fan, more than one spiral air duct, a drying box, more than one stirring device, a heating device and an exhaust device, wherein the spiral air duct is arranged at the bottom of the drying box, one end of the spiral air duct is connected to the fan by the heating device, the fan blows air into the spiral air duct, and blows air into the drying box through the spiral air duct, the drying box is provided with a material inlet for adding materials to be dried into the drying box, one end of the drying box is provided with more than one material outlet for discharging the dried materials, and a feed door and a discharge door are respectively arranged outside the material inlet and the material outlet, the stirring device comprises a stirring shaft, a stirring arm and a stirring motor, the stirring shaft is rotatably arranged on the drying box, one end of the stirring shaft is connected to the stirring motor, and the stirring arm is arranged on the stirring shaft. The present invention solves the technical defect of high energy consumption in the drying of kitchen waste and livestock manure in the prior art.

Description

Technical Field

[0001] The invention relates to a drying device utilizing hot air to penetrate materials, and belongs to the technical field of processing kitchen waste and livestock excrement. Background Art

[0002] Kitchen waste and livestock manure are common garbage that need to be treated. Since kitchen waste and livestock manure contain a lot of water, they need to be dried before treatment to facilitate subsequent treatment. The drying of kitchen waste and livestock manure is carried out in a drying device. The existing drying device includes a drying box, a blower and a heat exchanger. The air outlet of the blower is connected to the heat exchanger, and the air outlet of the heat exchanger is connected to the drying box for blowing hot air into the drying box. The kitchen waste and livestock manure to be treated are put into the drying box, and then hot air is filled into the drying box to heat the kitchen waste and livestock manure and increase the temperature in the drying box to dry the water in the kitchen waste and livestock manure, and the water vapor is taken out of the drying box with the exhaust of the air. The hot air of the existing drying device only contacts the surface of the kitchen waste and livestock manure. It takes a long time and high energy consumption to dry all the kitchen waste and livestock manure in the drying box. In addition, the existing drying box lacks a deodorizing device, and the air exhausted after drying is full of odor, which is not conducive to environmental protection. Summary of the invention

[0003] The purpose of the present invention is to provide a drying device that utilizes hot air to penetrate materials, thereby solving the technical defect of high energy consumption in drying kitchen waste and livestock manure in the prior art.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a drying device that utilizes hot air to penetrate materials, comprising more than one fan, more than one spiral air duct, a drying box, more than one stirring device, a heating device and an exhaust device, the spiral air duct is arranged at the bottom of the drying box, one end of the spiral air duct is connected to the fan by a heating device, the fan blows air into the spiral air duct, and blows air into the drying box through the spiral air duct, a material inlet is provided on the drying box for adding materials to be dried into the drying box, one end of the drying box is provided with more than one material outlet for discharging the dried materials, and a feed door and a discharge door are respectively provided outside the material inlet and the material outlet, the stirring device comprises a stirring shaft, a stirring arm and a stirring motor, the stirring shaft is rotatably arranged on the drying box, one end of which is connected to the stirring motor, the stirring arm is arranged on the stirring shaft, the stirring motor drives the stirring shaft and the stirring arm to rotate, which is used to stir the materials in the drying box and drive the materials to be transported in the drying box, the heating device is used to heat the air passing therethrough, and the exhaust device is connected to the upper part of the drying box, which is used to draw air from the drying box. In the present invention, the heated air penetrates the material from bottom to top, the contact surface between the material and the hot air is large, and the air flows quickly in the material, the material dries quickly, the time required for material drying is reduced, and the energy consumption of material drying is reduced.

[0005] As a further improvement of the present invention, a deodorizing box is further included, the deodorizing box is arranged on the top of the drying box and the bottom of the deodorizing box is communicated with the top of the drying box, the exhaust device is communicated with the deodorizing box, and the air in the drying box is deodorized by the deodorizing box and then sucked out by the exhaust device and discharged into the atmosphere. The present invention is provided with a deodorizing box, and the gas in the drying box is deodorized by the deodorizing box to remove the odor therein before being discharged, thereby avoiding air pollution and improving the environmental protection performance of the present invention.

[0006] As a further improvement of the present invention, it also includes a snail stacking machine, the material inlet is opened at the top of the drying box, the snail stacking machine is arranged at the top of the drying box, the discharge port of the snail stacking machine is located above the material inlet of the drying box, and the material preliminarily dehydrated by the snail stacking machine is put into the drying box from the material inlet. The present invention is provided with a snail stacking machine, which is used to squeeze out the moisture in the material, preliminarily dry the material, and then dry it in the drying box, thereby improving the drying treatment effect of the present invention on the material.

[0007] As a further improvement of the present invention, multiple spiral air ducts are arranged in parallel and fixed to the bottom of the drying box by a positioning clamp. In the present invention, the spiral air duct is fixed to the bottom of the drying box to prevent the spiral air duct from shaking during the material conveying and stirring process and causing interference to the drying effect, further improving the drying effect of the present invention.

[0008] As a further improvement of the present invention, two connection boxes are also included, the number of fans is two, the width of the upper end of the connection box is smaller than the width of the lower end, the tops of the two connection boxes are respectively connected to the air outlets of the two fans, the heating device connected to one end of the spiral air duct is respectively connected to the bottom of the two connection boxes, and the fan blows air into the connection box and blows it into multiple spiral air ducts through the connection box. The present invention is provided with a connection box to facilitate the connection between the fan and the spiral air duct and the distribution of the fan's wind to each spiral air duct.

[0009] As a further improvement of the present invention, the stirring shaft is located above the spiral air duct and is perpendicular to the spiral air duct in different planes, and the material outlet is opened on the drying box at one end of the spiral air duct. In the present invention, the material outlet is located on one side of the stirring shaft, which is consistent with the direction of the stirring shaft stirring the material conveying, so that the material is conveyed to the material outlet direction, and the subsequent material output is convenient.

[0010] As a further improvement of the present invention, the stirring arm is T-shaped, and the width of the end of the stirring arm away from the stirring shaft along the length direction of the stirring shaft is greater than the width of the end thereof used for connecting with the stirring shaft, so as to move the material for transportation during rotation. The end width of the stirring arm in the present invention is large, which is convenient for moving the material, which is convenient for laying the material flat in the drying box on the one hand, and convenient for transportation of the material on the other hand.

[0011] As a further improvement of the present invention, a temperature sensor is provided on the drying box for detecting the temperature in the drying box and controlling the heating device. The present invention is provided with a temperature sensor to detect the temperature in the drying box, and can control whether the heating device works according to the temperature in the drying box, thereby avoiding energy waste.

[0012] As a further improvement of the present invention, it also includes more than one observation port, which is arranged on the upper part of the drying box. The present invention provides an observation port on the drying box to facilitate observation of the drying condition of the material in the drying box.

[0013] As a further improvement of the present invention, it also includes a material inspection door, which is arranged at the upper part of the drying box. The material inspection door is opened to take out the material from the drying box to detect the drying condition of the material. The present invention has a material inspection door, which is convenient for taking out the material from the drying box and further convenient for detecting the drying condition of the material.

[0014] In summary, the beneficial effects of the present invention are as follows: the present invention dries kitchen waste and livestock manure quickly, takes less drying time, requires less energy consumption, has no odor in the air discharged after drying, and is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a left side view of the present invention.

[0016] Figure 2 It is a top view of the present invention.

[0017] Figure 3 It is the front view of the present invention.

[0018] Figure 4 It is a rear view of the present invention.

[0019] Figure 5 It is a right side view of the present invention.

[0020] Figure 6 It is a longitudinal sectional view of the present invention.

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the drying box in the present invention.

[0022] Figure 8 yes Figure 7 A partial enlarged view of point M in the middle.

[0023] Fig. 9 It is a top view of the present invention.

[0024] Fig.10 yes Fig. 9 AA section view in.

[0025] Fig.11It is a schematic diagram of air flow in the present invention (the direction of arrows in the figure indicates the direction of air flow).

[0026] Among them: 1. Fan; 2. Spiral air duct; 3. Exhaust device; 4. Heating device; 5. Reducer; 6. Spiral stacking machine; 7. Drying box; 8. Stirring device; 81. Stirring motor; 82. Stirring shaft; 83. Clamp unit; 84. Bearing; 86. Stirring arm; 9. Temperature sensor; 10. Deodorizing box; 11. Observation port; 12. Material inspection port door; 13. Discharge door; 14. Plug; 15. Positioning clamp; 16. Fan mounting frame; 17. Connection box; 18. Pipeline. DETAILED DESCRIPTION

[0027] The present invention is further described below with reference to the accompanying drawings. The present invention defines the direction of the end of the drying box 7 where the material is discharged as the front direction, the direction opposite to the end of the drying box 7 where the material is discharged as the rear direction, and from the back to the front, the left hand side is the left direction, and the right hand side is the right direction.

[0028] Example 1

[0029] like Figures 1 to 11 The drying device for using hot air to penetrate materials shown in the figure comprises one or more fans 1, one or more spiral air ducts 2, a drying box 7, one or more stirring devices 8, a heating device 4 and an exhaust device 3. The spiral air duct 2 is arranged at the bottom of the drying box 7. One end of the spiral air duct 2 is connected to the fan 1 by the heating device 4. In this embodiment, both ends of the spiral air duct 2 are blocked by plugs 14 to prevent negative air from being discharged from both ends of the spiral air duct 2. An air inlet is radially opened at the rear end of the spiral air duct 2, and the air inlet is connected to the heating device, as shown in FIG. Figure 7 and Figure 8 As shown, a plurality of spiral exhaust ports are provided at the portion of the spiral air duct 2 located in the drying box 7, which are used to discharge the air in the spiral air duct 2 into the drying box 7, and the fan 1 blows air into the spiral air duct 2 and blows the air into the drying box 7 through the spiral air duct 2. A material inlet is provided at the top of the drying box 7 for adding the material to be dried into the drying box 7, and more than one material outlet is provided at the front end of the drying box 7 for discharging the dried material, and a feed door and a discharge door 13 are respectively provided outside the material inlet and the material outlet. In this embodiment, preferably, three discharge doors 13 are provided at the front end of the drying box 7, and the size and height of the three discharge doors 13 are equal. The fan 1 in this embodiment preferably adopts a vortex fan.

[0030] The stirring device 8 in this embodiment includes a stirring shaft 82, a stirring arm 86 and a stirring motor 81. Both ends of the stirring shaft 82 are rotatably set on the drying box 7 using bearings 84. The right end of the stirring shaft extends out of the drying box 7 and is connected to the stirring motor 81. In this embodiment, a reducer 5 is preferably provided on the right side of the drying box 7. The stirring motor 81 is installed on the reducer 5, and the output shaft of the stirring motor 81 is connected to the output shaft of the reducer 5. The output shaft of the reducer 5 is connected to the stirring shaft 82. The stirring arm 86 is detachably installed on the stirring shaft 82. The stirring motor 81 drives the stirring shaft 82 and the stirring arm 86 to rotate, so as to stir the material in the drying box 7 and drive the material to be transported in the drying box 7.

[0031] The heating device 4 in this embodiment preferably adopts a ceramic heating rod for heating the air passing therethrough. The exhaust device 3 is connected to the upper part of the drying box 7 for drawing air from the drying box 7. The exhaust device 3 in this embodiment preferably adopts a blower for drawing out the air in the drying box 7 and discharging it into the atmosphere by blowing air from the atmosphere outside the blower.

[0032] In this embodiment, the plurality of spiral ducts 2 are arranged in parallel and at equal intervals, and each spiral duct 2 is fixed to the bottom of the drying box 7 by a plurality of positioning hoops 15, and the plurality of positioning hoops 15 are evenly spaced along the length direction of the spiral duct 2. In this embodiment, there are four stirring devices 8, and the four stirring devices 8 are evenly spaced along the front-to-back direction, that is, the distance between two adjacent stirring shafts 82 is equal.

[0033] The stirring shaft 82 in this embodiment is located above the spiral air duct 2 and is perpendicular to the spiral air duct 2 at different planes. The material outlet is opened on the drying box 7 at one end of the spiral air duct 2.

[0034] The stirring arm 86 in this embodiment is T-shaped, and the width of the end of the stirring arm 86 away from the stirring shaft 82 along the length direction of the stirring shaft 82 is greater than the width of the end connected to the stirring shaft 82, and is used to move the material for transportation during rotation. For example, when the stirring motor 81 in this embodiment drives the stirring shaft 82 and the stirring arm 86 to rotate clockwise, the material in the drying box 7 can be moved backward, thereby transporting the material backward, and when the stirring motor 81 drives the stirring shaft 82 and the stirring arm 86 to rotate counterclockwise, the material in the drying box 7 can be moved forward, thereby realizing the forward transportation of the material in the drying box 7. The stirring device in this embodiment can realize the forward and backward transportation of the material in the front drying box 7 while stirring the material uniformly. The length of the stirring arm 86 in this embodiment is: when the stirring arm 86 is in a vertical state, its lowest end is slightly higher than the top of the spiral air duct 2, so that when the stirring arm 86 rotates, it will not affect the spiral air duct 2.

[0035] The specific structure of the present embodiment to achieve the detachable installation of the stirring arm 86 and the stirring shaft 82 is: a mounting hoop is provided at one end of the stirring arm 86 for installation on the stirring shaft 82, and the mounting hoop includes two hoop units 83, one of which is fixedly connected to the stirring arm 86 (such as welding or integral molding), and the two ends of the other hoop unit 83 are detachably connected to the two ends of the hoop unit 83 fixed to the stirring arm 86 by bolts and nuts matched with the bolt threads, and the two hoop units 83 are tightly clamped on the stirring shaft 82 to achieve the detachable installation of the stirring arm 86 and the stirring shaft 82. In order to prevent the stirring arm 86 from rotating relative to the stirring shaft 82 during use, the present embodiment has a fixed threaded hole radially opened on the stirring shaft 82, and a fixed through hole is opened on a hoop unit 83 away from the stirring arm 86, and a bolt that passes through the fixed through hole and is threadedly matched with the fixed threaded hole is used to limit the mounting hoop on the stirring shaft 82, so as to ensure that the stirring arm 86 will not rotate relative to the stirring shaft 82 and move axially during use.

[0036] The present embodiment is preferably provided with a fan mounting frame 16, which is arranged at the rear side of the drying box. The fan 1 and the exhaust device 3 are both detachably mounted on the fan mounting frame 16 by bolts to support the fan 1 and the exhaust device 3.

[0037] The working process of this embodiment includes a feeding stage, a drying stage and a discharging stage, and each stage is described below.

[0038] 1. The first stage: the feeding stage, before feeding, the two fans 1 are turned on, and the air is blown into the drying box 7 through the spiral air duct 2, and the exhaust device 3 is turned on to suck the air. At this time, the heating device 4 does not work first, and the stirring motor 81 is turned on, and the stirring direction is controlled to stir toward the rear of the drying box 7, that is, the material in the drying box 7 is stirred in the direction of being transported backwards, which is used to evacuate the material; the crushed kitchen garbage, livestock manure, etc. are put into the drying box 7 from the material inlet, and the stirring arm 86 in the drying box 7 stirs the material and transports the material backwards, and the stirring motor 81 is controlled to rotate forward and reversely to transport the material to various positions in the drying box 7, so that the material gangue in the drying box 7 is evenly spread without the phenomenon of pushing accumulation.

[0039] 2. The second stage: the drying stage, turn on the heating device and make it work. The fan 1 generates wind with a certain pressure and flow rate, which is heated by the heating device to become hot air. The hot air is transmitted to the bottom of the material through the spiral air duct 2 and penetrates the material upward. The hot air heats the material and dries the moisture in the material. At the same time, the hot air is sucked away by the exhaust device 3 with water vapor.

[0040] 3. The third stage: the discharging stage. After the materials in the drying box 7 are dried, the three discharging doors 13 can be opened at the same time, and the rotation direction of the stirring motor 81 is controlled so that the stirring direction of the stirring arm 86 is uniformly toward the discharging door 13, and the materials are loaded and packaged. After the discharging is completed, the drying device stops running.

[0041] Example 2

[0042] This embodiment is a further improvement on the basis of the embodiment 1. Compared with the embodiment 1, this embodiment further comprises a deodorizing box 10. The deodorizing box 10 is arranged on the top of the drying box 7 and the bottom of the deodorizing box 10 is communicated with the top of the drying box 7. When the air in the drying box 7 passes through the deodorizing box 10, the deodorizing box 10 performs a deodorizing treatment on it to remove the odor in the air. The exhaust device 3 is communicated with the upper part of the deodorizing box 10. After the air in the drying box 7 is deodorized by the deodorizing box 10, it is sucked out by the exhaust device 3 and discharged into the atmosphere. In this embodiment, the drying box 7 is a top open structure, and in the drying box The top edge of the deodorizing box 10 is provided with a mounting seat with an L-shaped cross section except for the reserved material inlet. The bottom of the deodorizing box 10 is installed on the mounting seat. In this example, bolts are used to detachably connect the bottom of the deodorizing box 10 with the mounting seat to enhance the stability of this embodiment. In this embodiment, a plurality of air inlets are provided at the bottom of the deodorizing box 10. The air in the drying box 7 can enter the deodorizing box 10 through the air inlet. Activated carbon is laid at the bottom of the deodorizing box 10. The activated carbon is wrapped in cloth and placed at the bottom of the deodorizing box 10. The air entering the deodorizing box 10 from the drying box 7 is adsorbed by the activated carbon to remove its odor. The structure of the rest of the present embodiment is the same as that of the embodiment 1. The specifics can be referred to the embodiment 1, and this embodiment will not be repeated.

[0043] Example 3

[0044] This embodiment is a further improvement made on the basis of embodiment 1. Compared with embodiment 1, this embodiment further includes a snail stacking machine 6. The top of the drying box 7 in this embodiment is provided with a top plate for sealing it from the top of the drying box 7. The material inlet is opened at the front end of the top plate at the top of the drying box 7. The snail stacking machine 6 is installed at the front end of the top plate of the drying box 7 and supported by the top plate of the drying box 7. The discharge port of the snail stacking machine 6 is located above the material inlet of the drying box 7. The material preliminarily dehydrated by the snail stacking machine 6 is put into the drying box 7 from the material inlet. The snail stacking machine 6 in this embodiment is an existing product, which can be directly purchased and installed on the top of the drying box 7 for use. When this embodiment is used, the feed door at the material inlet is opened, and the material is put into the snail stacking machine 6. The snail stacking machine 6 squeezes and dehydrates the material. The material dehydrated by the snail stacking machine 6 falls into the drying box 7 through the material inlet, and then is dried by the drying box 7. The structure of the rest of the present embodiment is the same as that of embodiment 1. For details, please refer to embodiment 1, and this embodiment will not be repeated.

[0045] Example 4

[0046] The present embodiment is a further improvement made on the basis of the embodiment 2. Compared with the embodiment 2, the present embodiment further includes a snail stacking machine 6. The snail stacking machine 6 in the present embodiment is an existing product. The present embodiment sets a top plate on the top of the drying box 7, wherein the top plate is set on the front side of the top of the drying box 7, and the rear end of the drying box 7 is a top open structure. The deodorizing box 10 is set at the rear end of the top of the drying box 7. The structure of the deodorizing box 10 is the same as the structure of the deodorizing box in the embodiment 2, which will not be described in detail in the present embodiment. The material inlet is opened on the top plate of the top of the drying box 7, and the snail stacking machine 6 is set on the top plate of the drying box 7, that is, the deodorizing box 10 and the snail stacking machine 6 in the present embodiment are respectively located at the two ends of the top of the drying box 7, and the discharge port of the snail stacking machine 6 is located above the material inlet of the drying box 7. The material after preliminary dehydration by the snail stacking machine 6 is put into the drying box 7 from the material inlet. The operation of the snail stacking machine 6 in the present embodiment is the same as that in the embodiment 3, and the specific details can be referred to the embodiment 3. The structure of the rest of the present embodiment is the same as that in the embodiment 2, and the specific details can be referred to the embodiment 2, which will not be described in detail in the present embodiment.

[0047] Example 5

[0048] This embodiment is a further improvement of any one of the embodiments 1 to 4. Compared with the above-mentioned embodiments, this embodiment further includes two connection boxes 17, which are detachably mounted on the outer surface of the rear end of the drying box 7 by bolts, and the height of the connection box 17 is less than the height of the fan, and the two connection boxes 17 are respectively arranged on the left and right sides of the rear end of the drying box 7. In this embodiment, there are two fans 1, which are detachably mounted on the left and right ends of the fan mounting frame 16 by bolts, and the width of the upper end of the connection box 17 is less than the width of the lower end. The tops of the two connection boxes 17 are respectively connected to the air outlets of the two fans 1 by pipes 18, and the ceramic heating rods connected to one end of the spiral air duct 2 are respectively connected to the bottoms of the two connection boxes 17 and the ceramic heating rods are both in a vertical state. The fan 1 blows air into the connection box 17 and blows air into the multiple spiral air ducts 2 through the connection box 17. The two fans 1 in this embodiment work synchronously to blow air into the drying box 7. The structure of the rest of this embodiment is the same as any one of the above-mentioned embodiments, and the above-mentioned embodiments can be referred to for details, and this embodiment will not be repeated.

[0049] Example 6

[0050] This embodiment is a further improvement on the basis of Embodiment 1. Compared with Embodiment 1, this embodiment is further provided with a temperature sensor 9 on the drying box 7 for detecting the temperature in the drying box 7 and controlling the heating device 4. In this embodiment, the temperature sensor 9 measures the temperature in the drying box 7, and controls the on and off of the power supply of the heating device 4 according to the measured temperature, thereby controlling the temperature of the air entering the drying box 7, and then adjusting the temperature in the drying box 7. In this embodiment, the above detection and control are all prior art, and are not described in detail in this embodiment. The structure of the rest of this embodiment is the same as that of Embodiment 1, and specific reference may be made to Embodiment 1, and this embodiment is not repeated. It should be understood that the temperature sensor 9 in this embodiment can be provided in Embodiments 2 to 5 in this application to detect and control the temperature in the drying box 7.

[0051] Example 7

[0052] This embodiment is a further improvement of the embodiment 1. Compared with the embodiment 1, this embodiment further includes more than one observation port 11, which is arranged at the upper part of the drying box 7. In this embodiment, the observation port 11 is preferably opened at the front end of the drying box 7, and there are two observation ports 11, which are respectively opened at the left and right sides of the front end of the drying box 7. The structure of the rest of this embodiment is the same as that of the embodiment 1, and the details can be referred to the embodiment 1, and this embodiment will not be described in detail. It should be understood that the observation port 11 in this embodiment can be set in the embodiments 2 to 5 in this application, so as to observe the drying status of the material in the drying box 7.

[0053] Example 8

[0054] This embodiment is a further improvement of Embodiment 7. Compared with Embodiment 7, this embodiment further includes a material picking port door 12, which is arranged at the upper part of the drying box 7. The material picking port door 12 is opened to take out the material from the drying box 7 to detect the drying condition of the material. The number of the material picking port door 12 in this embodiment is one, and the material picking port door 12 is located between the two observation ports 11. The two observation ports 11 are symmetrically distributed on the left and right sides of the material picking port door 12. The structure of the rest of this embodiment is the same as that of Embodiment 7. For details, please refer to Embodiment 7, and this embodiment will not be repeated.

[0055] The parts not specifically described in the above description are all prior art, or can be implemented by prior art. Moreover, the specific implementation cases described in the present invention are only preferred implementation cases of the present invention, and are not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent scope of the present invention should be regarded as the technical scope of the present invention.

Claims

1. A drying device that uses hot air to penetrate materials, characterized in that: The invention comprises one or more fans (1), one or more spiral air ducts (2), a drying box (7), one or more stirring devices (8), a heating device (4), an exhaust device (3), a deodorizing box (10) and two connecting boxes (17), wherein the spiral air duct (2) is arranged at the bottom of the drying box (7), one end of the spiral air duct (2) is connected to the fan (1) by the heating device, the fan (1) blows air into the spiral air duct (2), and blows the air into the drying box (7) through the spiral air duct (2), the drying box (7) is provided with a material inlet for adding the material to be dried into the drying box (7), one end of the drying box (7) is provided with one or more material outlets for discharging the dried material, and A material inlet door and a material outlet door (13) are respectively arranged outside the material inlet and the material outlet. The stirring device (8) comprises a stirring shaft (82), a stirring arm (86) and a stirring motor (81). The stirring shaft (82) is rotatably arranged on the drying box (7) and one end of the stirring shaft (82) is connected to the stirring motor (81). The stirring arm (86) is arranged on the stirring shaft (82). The stirring motor (81) drives the stirring shaft (82) and the stirring arm (86) to rotate, so as to stir the material in the drying box (7) and drive the material to be transported in the drying box (7). The heating device (4) is used to heat the air passing through the heating device (4). The exhaust device (3) is connected to the upper part of the drying box (7) and is used to absorb air from the drying box (7). Both ends of the spiral air duct (2) are blocked by plugs (14); an air inlet is radially opened at the rear end of the spiral air duct (2); the air inlet is connected to the heating device; and a plurality of spiral air outlets are opened at the portion of the spiral air duct (2) located inside the drying box (7) for discharging air in the spiral air duct (2) into the drying box (7); The deodorizing box (10) is arranged on the top of the drying box (7) and the bottom of the deodorizing box (10) is in communication with the top of the drying box (7). The exhaust device (3) is in communication with the deodorizing box (10). The air in the drying box (7) is deodorized by the deodorizing box (10) and then sucked out by the exhaust device (3) and discharged into the atmosphere. A plurality of spiral air ducts (2) are arranged in parallel and fixed to the bottom of the drying box (7) using a positioning clamp (15); The number of fans (1) is two, the width of the upper end of the connection box (17) is smaller than the width of the lower end, the top ends of the two connection boxes (17) are respectively connected to the air outlets of the two fans (1), the heating device connected to one end of the spiral air duct (2) is respectively connected to the bottom of the two connection boxes (17), and the fan (1) blows air into the connection box (17) and blows air into the plurality of spiral air ducts (2) through the connection box (17).

2. The drying device for utilizing hot air to penetrate materials according to claim 1, characterized in that: The invention also comprises a snail stacking machine (6), wherein a material inlet is opened at the top of the drying box (7), the snail stacking machine (6) is arranged at the top of the drying box (7), and a material discharge port of the snail stacking machine (6) is located above the material inlet of the drying box (7), and the material after preliminary dehydration by the snail stacking machine (6) is put into the drying box (7) through the material inlet.

3. The drying device for utilizing hot air to penetrate materials according to claim 1, characterized in that: The stirring shaft (82) is located above the spiral air duct (2) and is skewed and perpendicular to the spiral air duct (2). The material outlet is opened on the drying box (7) at one end of the spiral air duct (2).

4. The drying device for utilizing hot air to penetrate materials according to claim 3, characterized in that: The stirring arm (86) is T-shaped, and the width of one end of the stirring arm (86) away from the stirring shaft (82) along the length direction of the stirring shaft (82) is greater than the width of one end thereof connected to the stirring shaft (82), so as to move materials for conveyance during rotation.

5. The drying device for utilizing hot air to penetrate materials according to claim 1, characterized in that: The drying box (7) is provided with a temperature sensor (9) for detecting the temperature inside the drying box (7) and controlling the heating device (4).

6. The drying device for utilizing hot air to penetrate materials according to claim 1, characterized in that: It also includes one or more observation ports (11), which are arranged on the upper part of the drying box (7).

7. The drying device for utilizing hot air to penetrate materials according to claim 1, characterized in that: The material inspection port door (12) is arranged at the upper part of the drying box (7), and the material inspection port door (12) is opened to take out the material from the drying box (7) to detect the drying condition of the material.

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