A device for drying water in diuron granules

Abstract

The present application provides a kind of diuron granule moisture drying device, it is related to drying device technical field, including drying frame body and quartz heating tube, quartz heating tube is arranged on the inner wall of drying frame body, bottom support is arranged below the inside of drying frame body, the central position of bottom support top is equipped with heat dissipation cylinder, the bottom support top of heat dissipation cylinder outside is rotatably equipped with inner spiral and outer spiral, the diameter of inner spiral is less than outer spiral, hollow ring is arranged on the bottom support between inner spiral and outer spiral, clearance is left between the lower end of hollow ring and bottom support, the inside of drying frame body is equipped with rotating shaft.The slow rotation of inner spiral and outer spiral can lift the material originally located at the bottom to the upper, and drop from the upper end of hollow ring to the bottom, so circulation, not only can realize the mixing of material horizontal direction, but also can realize the mixing of up and down position, avoid the material located at the bottom is always not lifted, cause the problem of the material temperature of bottom to be too high.

Description

Technical Field

[0001] This invention relates to the field of drying equipment technology, and in particular to a moisture drying device for diuron granules. Background Technology

[0002] Diuron is a commonly used substituted urea systemic herbicide. Its chemical name is 3-(3,4-dichlorophenyl)-1,1-dimethylurea, and its chemical structure is shown below. The pure product is a white, odorless crystal that is almost insoluble in water and has low solubility in hydrocarbons. It has a melting point of 158-159°C, is stable to oxidation and moisture, and is stable under normal temperature and neutral conditions. Water-dispersible granules, also known as dry suspensions or granular wettable powders, can quickly disintegrate and disperse when placed in water, forming a highly suspended solid-liquid dispersion system. After diuron water-dispersible granules are prepared through relevant processes, the granules often contain a lot of water. If the granules are not dried as soon as possible, the content of the active ingredient in the granules will decrease, and the effect of the granules will decrease accordingly.

[0003] For example, a drying device for diuron water-dispersible granules, patent number "CN214039315U", includes an outer tank and an inner tank. A water storage chamber is set between the outer and inner tanks. The water storage chamber is filled with hot water at a temperature of 80 degrees Celsius or higher to heat and dry the water-dispersible granules in the inner tank. A gas circulation pipe is set in the water storage chamber. With the action of a fan, external air circulates in the pipe and is heated by the hot water. The heated air is then used to dry the water-dispersible granules in the inner tank. An exhaust fan is set in the outer tank to extract the air from the inner tank and send it into the air supply pipe. This part of the air re-enters the water storage chamber for heating. At the same time, heating and drying the granules in this way can ensure the stability of the drying temperature and prevent the drying temperature from adversely affecting the main chemical components of diuron water-dispersible granules. The relative rotation of the main stirring shaft and the secondary stirring shaft causes the granules in the inner tank to move slowly, reducing the uneven heating caused by granule accumulation.

[0004] After diuron water-dispersible granules are prepared by relevant processes, the granules often contain a lot of water. If the granules are not dried as soon as possible, the content of the active ingredients in the granules will decrease, and the effect of the granules will decrease accordingly. Therefore, a simple device is needed to dry diuron water-dispersible granules. At the same time, it should be considered that the melting point of diuron is 158-159°C, and special attention should be paid to temperature control during the drying process.

[0005] As described in the aforementioned patent, the material is agitated by multiple spiral shafts with a certain distance between adjacent spiral shafts. The material in the upper middle position can be stirred and mixed by the spiral shafts. The granular material at the bottom and corner positions is difficult to be rolled up. If it stays at the bottom for a long time, the temperature of the granular material at that position is likely to be too high, resulting in quality problems. In addition, the steam generated during the drying process condenses into water droplets on the inner wall of the device and is directly discharged, and some heat is also discharged with it, resulting in heat loss. Summary of the Invention

[0006] The purpose of this invention is to solve the problem in the prior art that the granular materials located at the bottom and corners are difficult to roll up, resulting in uneven mixing and poor heat reuse.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a moisture drying device for diuron granules, comprising a drying frame and a quartz heating tube, wherein the quartz heating tube is disposed on the inner wall of the drying frame, a base is provided at the lower part of the drying frame, a heat dissipation cylinder is provided at the center position above the base, an inner spiral and an outer spiral are rotatably arranged above the base outside the heat dissipation cylinder, the diameter of the inner spiral is smaller than that of the outer spiral, a hollow ring is provided on the base between the inner spiral and the outer spiral, a gap is left between the lower end of the hollow ring and the base, a rotating shaft is provided inside the drying frame, the rotating shaft is connected to a high-strength resistant... Driven by a warm motor, the inner and outer spirals are respectively linked to the rotating shaft. The rotating shaft and the interiors of the inner and outer spirals are hollow and interconnected. A blower head is connected to the inner and outer spirals. A fan is provided at the upper end of the drying rack. A dehumidification rack is provided on the outer wall of the drying rack. A dehumidification mechanism is provided inside the dehumidification rack. The output end of the fan is connected to the upper interior of the dehumidification rack through an exhaust pipe. The lower end of the dehumidification rack is connected to the interior of the rotating shaft through an air inlet pipe. A feed inlet and a discharge outlet are provided at the top and bottom of the drying rack, respectively.

[0008] In a preferred embodiment, the inner and outer sides of the inner spiral are slidably disposed with respect to the outer wall of the heat dissipation cylinder and the inner side of the hollow ring, respectively. The inner and outer sides of the outer spiral are slidably disposed with respect to the outer side of the hollow ring and the inner wall of the drying rack, respectively. The inner spiral, outer spiral, and the upper end of the hollow ring are at the same height. The height of the heat dissipation cylinder is higher than the upper end of the hollow ring. By setting a hollow ring between the inner and outer spirals, and setting the hollow ring at the same height as the inner and outer spirals, the material can fall from inside the hollow ring after being rolled up by the inner and outer spirals, thus achieving circulation.

[0009] In a preferred embodiment, the upper and lower ends of the hollow ring are connected. The lower end of the hollow ring is assembled and connected to the upper part of the base through a support block. Multiple support blocks are provided at equal intervals. The support blocks are arranged to leave a gap between the lower end of the hollow ring and the base, so that the material falling from the upper end of the hollow ring can be squeezed and moved towards the bottom of the inner spiral or the bottom of the outer spiral.

[0010] In a preferred embodiment, the sidewall of the rotating shaft is connected to the inner and outer spirals via connecting pipes. Multiple blowers are provided, positioned above and below the inner spiral and above and below the outer spiral. The number of blowers at the lower ends of the inner and outer spirals is greater than at the upper ends. By introducing hot air to remove moisture into the inner and outer spirals, air can be blown into the material, accelerating its drying. The presence of more blowers at the lower ends prevents most of the hot air from being directly ejected from the upper ends, thus avoiding a lower airflow at the lower end.

[0011] In a preferred embodiment, the high-temperature resistant motor is mounted on the inner wall of the drying rack via a bracket. A connecting pipe is provided at the upper end of the rotating shaft in a sealed manner. The end of the air inlet pipe away from the dehumidification rack penetrates the side wall of the drying rack and is fixedly connected to the connecting pipe. A linkage shaft is provided at the output end of the high-temperature resistant motor. The end of the linkage shaft away from the high-temperature resistant motor penetrates the connecting pipe and is linked to the inner wall of the rotating shaft. The linkage shaft and the connecting pipe are sealed and rotated. Through the connecting pipe, hot air in the air inlet pipe is easily guided into the rotating shaft, and then into the inner and outer spirals.

[0012] In a preferred embodiment, the dehumidification mechanism includes a water-absorbing bag and a mounting frame. The mounting frame is disposed on the outside of the water-absorbing bag, and the water-absorbing bag is detachably mounted on the inner wall of the dehumidification frame via the mounting frame. The water-absorbing bag is filled with high-temperature water-absorbing and expanding resin. By placing the high-temperature water-absorbing and expanding resin inside the water-absorbing bag, the resin can absorb water vapor in the hot air introduced into the dehumidification frame after contacting with the hot air. High-temperature water-absorbing and expanding resin, as the name suggests, is a resin material that can absorb moisture and expand under high temperature conditions. This new type of functional material is mainly composed of base resin, crosslinking agent, expanding agent, and additives, thus achieving the dehumidification effect. The mounting frame facilitates the disassembly and replacement of the water-absorbing bag when it is full of water, ensuring the continuous operation of the dehumidification mechanism.

[0013] In a preferred embodiment, the dehumidifier frame has a disassembly port on one side. A limiting track is provided on the inner wall of the dehumidifier frame inside the disassembly port. The mounting bracket is slidably engaged within the limiting track. The outer wall of the outer end of the mounting bracket is sealed and engaged with the disassembly port. A locking plate is provided on the outer wall of the outer end of the mounting bracket. The locking plate is bolted to the outer wall of the dehumidifier frame. When disassembling the mounting bracket, the bolts are removed, and the locking plate and mounting bracket are pulled outwards. The mounting bracket and absorbent bag can be directly removed from the disassembly port, and a new mounting bracket for the absorbent bag can be installed. The bracket is then pushed into the limiting track, where it is positioned to ensure stable installation. The locking plate is secured with bolts to prevent detachment.

[0014] In a preferred embodiment, the air inlet pipe is equipped with a valve, which is located at one end of the air inlet pipe outside the drying rack body. The lower end of the dehumidification rack body is equipped with an air outlet pipe, and a plug is provided inside the air outlet pipe. The valve allows the hot air to be directly discharged from the air outlet pipe when the mounting rack is replaced. After replacement, the valve is opened to prevent the hot air from the dehumidification mechanism from re-entering the drying rack body.

[0015] In a preferred embodiment, the heat sink has a plurality of heat dissipation holes evenly distributed on its side wall, and a breathable filter is provided on the outside of the heat sink. The breathable filter is made of a mesh structure woven from high silica glass fiber, wherein the filter holes of the breathable filter are smaller than the diameter of diuron particles, which can prevent particles from entering the interior through the outside of the heat sink.

[0016] In a preferred embodiment, there are two discharge ports, which are respectively connected to the base directly below the inner spiral and the outer spiral. The lower end of each discharge port is connected to the outside, and a sealing plug is provided inside the discharge port. The two discharge ports facilitate the discharge of materials located below the inner spiral and the outer spiral during unloading, minimizing material residue.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0018] 1. This invention uses the slow rotation of the inner and outer spirals to lift the material that is originally at the bottom to the top, and then let it fall down from the top of the hollow ring to the bottom. This cycle not only achieves horizontal mixing of the material, but also vertical mixing, thus avoiding the problem of the material at the bottom not being lifted and causing the material temperature at the bottom to be too high.

[0019] 2. This invention starts the fan to remove some of the heat and moisture from the evaporated air, and guides it into the dehumidification rack through the exhaust pipe. After dehumidification by the dehumidification rack, the hot air is guided into the rotating shaft through the air inlet pipe. This not only achieves the dehumidification effect, but also effectively reduces heat loss and allows for the reuse of heat.

[0020] 3. In this invention, the heat discharged from the dehumidification rack is introduced into the inner and outer spirals through the rotating shaft, and sprayed out from the blower head during the stirring process. This continuously blows air onto the materials located at different positions, achieving internal heating and drying, resulting in faster and more uniform drying efficiency. After a certain period of time, if there is too much moisture in the dehumidification mechanism, the dehumidification mechanism can be replaced to reduce the possibility of moisture recirculating into the drying rack and re-contacting the materials.

[0021] 4. This invention can accelerate the drying of materials by introducing hot air to remove moisture into the inner and outer spirals. By connecting and setting more blower heads at the lower end, most of the hot air is prevented from being sprayed out directly from the upper end, which would result in less airflow at the lower end. Attached Figure Description

[0022] Figure 1 A perspective view of a moisture drying device for diuron granules provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of a moisture drying device for diuron granules provided by the present invention;

[0024] Figure 3 A cross-sectional view of a moisture drying device for diuron granules provided by the present invention;

[0025] Figure 4 This invention provides a schematic diagram of the assembly of the inner and outer spirals in a moisture drying device for diuron granules.

[0026] Figure 5 This invention provides a schematic diagram of the assembly of the connecting pipe and rotating shaft of a moisture drying device for diuron granules.

[0027] Figure 6 A schematic diagram of the internal structure of the dehumidification frame of the diuron granule moisture drying device provided by the present invention;

[0028] Figure 7 This is a schematic diagram of the dehumidification mechanism of a diuron granule moisture drying device provided by the present invention;

[0029] Figure 8 A schematic diagram of the heat dissipation cylinder of a moisture drying device for diuron granules provided by the present invention.

[0030] Legend:

[0031] 1. Drying rack body; 101. Quartz heating tube; 2. Base support; 3. Heat dissipation cylinder; 4. Inner spiral; 5. Outer spiral; 6. Hollow ring; 7. Rotating shaft; 8. High-temperature resistant motor; 9. Blower head; 10. Fan; 111. Dehumidification rack body; 112. Exhaust pipe; 113. Inlet pipe; 121. Feed inlet; 122. Discharge outlet; 13. Support block; 14. Connecting pipe; 151. Bracket; 152. Connecting pipe; 153. Linkage shaft; 161. Water absorption bag; 162. Mounting bracket; 163. Disassembly port; 164. Limiting rail; 165. Bolt; 166. Clamping plate; 17. Valve; 18. Outlet pipe; 191. Heat dissipation hole; 192. Breathable filter screen; 20. Sealing plug. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-8 This invention provides a technical solution: a moisture drying device for diuron granules, comprising a drying rack 1 and a quartz heating tube 101. The quartz heating tube 101 is disposed on the inner wall of the drying rack 1 and is electrically connected to an external power source. A base 2 is provided at the bottom inside the drying rack 1, and a heat dissipation cylinder 3 is provided at the center of the top of the base 2. An inner spiral 4 and an outer spiral 5 are rotatably disposed above the base 2 outside the heat dissipation cylinder 3. The diameter of the inner spiral 4 is smaller than that of the outer spiral 5. A hollow ring 6 is provided on the base 2 between the inner spiral 4 and the outer spiral 5, with a gap between the lower end of the hollow ring 6 and the base 2. A rotating shaft 7 is provided inside the drying rack 1, and the rotating shaft 7 is driven by a high-temperature resistant motor 8. The inner spiral 4 and the outer spiral 5 are respectively linked to the rotating shaft 7. The rotating shaft 7 and the inner spiral 4 and the outer spiral 5 are all hollow and connected to each other. The inner spiral 4 and the outer spiral 5 are connected to the blower head 9. The upper end of the drying rack 1 is equipped with a fan 10. The outer wall of the drying rack 1 is equipped with a dehumidifying rack 111. The dehumidifying rack 111 is equipped with a dehumidifying mechanism. The output end of the fan 10 is connected to the upper part of the dehumidifying rack 111 through the exhaust pipe 112. The lower end of the dehumidifying rack 111 is connected to the inside of the rotating shaft 7 through the air inlet pipe 113. The upper and lower parts of the drying rack 1 are respectively equipped with a feed inlet 121 and a discharge outlet 122.

[0034] like Figure 1-8As shown, the inner and outer sides of the inner spiral 4 are slidably disposed with respect to the outer wall of the heat dissipation cylinder 3 and the inner side of the hollow ring 6, respectively. The inner and outer sides of the outer spiral 5 are slidably disposed with respect to the outer side of the hollow ring 6 and the inner wall of the drying rack 1, respectively. The upper ends of the inner spiral 4, outer spiral 5 and hollow ring 6 are set at the same height. The height of the heat dissipation cylinder 3 is much higher than the upper end of the hollow ring 6. By setting the hollow ring 6 between the inner spiral 4 and the outer spiral 5, and setting the hollow ring 6 at the same height as the inner spiral 4 and the outer spiral 5, the material can fall from the inside of the hollow ring 6 after being rolled up by the inner spiral 4 and the outer spiral 5, thus achieving circulation.

[0035] like Figure 1-8 As shown, the upper and lower ends of the hollow ring 6 are connected. The lower end of the hollow ring 6 is connected to the upper part of the base 2 through the support block 13. Multiple support blocks 13 are provided at equal intervals. Through the support blocks 13, a gap is left between the lower end of the hollow ring 6 and the base 2, so that the material falling from the upper end of the hollow ring 6 can be squeezed and moved towards the bottom of the inner spiral 4 or the bottom of the outer spiral 5.

[0036] like Figure 1-8 As shown, the side wall of the rotating shaft 7 is connected to the inner spiral 4 and the outer spiral 5 respectively through the connecting pipe 14. There are multiple blower heads 9, which are located above and below the inner spiral 4 and above and below the outer spiral 5. The number of blower heads 9 at the lower end of the inner spiral 4 and the outer spiral 5 is greater than that at the upper end. By introducing hot air to remove moisture into the inner spiral 4 and the outer spiral 5, the material can be blown inside to accelerate its drying. By connecting and setting more blower heads 9 at the lower end, most of the hot air is prevented from being sprayed out directly from the upper end, resulting in less air volume at the lower end.

[0037] like Figure 1-8 As shown, the high-temperature resistant motor 8 is mounted on the inner wall of the drying rack 1 via a bracket 151. A connecting pipe 152 is provided at the upper end of the rotating shaft 7 for sealing and rotation. The end of the air inlet pipe 113 away from the dehumidifying rack 111 passes through the side wall of the drying rack 1 and is fixedly connected to the connecting pipe 152. A linkage shaft 153 is provided at the output end of the high-temperature resistant motor 8. The end of the linkage shaft 153 away from the high-temperature resistant motor 8 passes through the connecting pipe 152 and is linked to the inner wall of the rotating shaft 7. The linkage shaft 153 and the connecting pipe 152 are sealed and rotated. Through the connecting pipe 152, it is convenient to guide the hot air in the air inlet pipe 113 into the rotating shaft 7, and then into the inner spiral 4 and the outer spiral 5.

[0038] like Figure 1-8As shown, the dehumidification mechanism includes a water-absorbing bag 161 and a mounting frame 162. The mounting frame 162 is located on the outside of the water-absorbing bag 161. The water-absorbing bag 161 is detachably mounted on the inner wall of the dehumidification frame 111 via the mounting frame 162. The water-absorbing bag 161 is filled with high-temperature water-absorbing and expanding resin. By placing the high-temperature water-absorbing and expanding resin inside the water-absorbing bag 161, the high-temperature water-absorbing and expanding resin can absorb water vapor in the hot air introduced into the dehumidification frame 111 after contacting with the hot air. High-temperature water-absorbing and expanding resin, as the name suggests, is a resin material that can absorb moisture and expand under high temperature conditions. This new type of functional material is mainly composed of base resin, crosslinking agent, expanding agent and additives, thus achieving the dehumidification effect. The mounting frame 162 facilitates the disassembly and replacement of the water-absorbing bag 161 when it is full of water, so as to ensure the continuous operation of the dehumidification mechanism.

[0039] like Figure 1-8 As shown, a disassembly port 163 is provided on one side of the dehumidifier frame 111. A limiting rail 164 is provided on the inner wall of the dehumidifier frame 111 inside the disassembly port 163. The mounting bracket 162 is engaged and slidably disposed within the limiting rail 164. The outer wall of the outer end of the mounting bracket 162 is sealed and engaged with the disassembly port 163. A locking plate 166 is provided on the outer wall of the outer end of the mounting bracket 162. The locking plate 166 is assembled and connected to the outer wall of the dehumidifier frame 111. When disassembling the mounting bracket 162, by pulling the mounting bracket 162 outward through the locking plate 166, the mounting bracket 162 and the water-absorbing bag 161 can be directly removed from the disassembly port 163. Then, the mounting bracket 162 of the new water-absorbing bag 161 can be replaced. It is pushed into the limiting rail 164, and the limiting rail 164 limits its installation to ensure stability.

[0040] In one embodiment, the snap-fit ​​plate 166 is assembled and connected to the outer wall of the dehumidifier frame 111 by bolts 165.

[0041] In another embodiment, the locking plate 166 is engaged with the outer wall of the dehumidifier frame 111.

[0042] like Figure 1-8 As shown, a valve 17 is provided on the air inlet pipe 113. The valve 17 is located at one end of the air inlet pipe 113 outside the drying rack body 1. An air outlet pipe 18 is provided at the lower end of the dehumidification rack body 111. A plug is provided inside the air outlet pipe 18. The valve 17 is provided so that when the mounting bracket 162 is replaced, the valve 17 can be closed so that the hot air can be directly discharged from the air outlet pipe 18. After replacement, the valve 17 can be opened to prevent the hot air from the dehumidification mechanism from re-entering the drying rack body 1.

[0043] like Figure 1-8As shown, multiple heat dissipation holes 191 are evenly provided on the side wall of the heat dissipation cylinder 3. A breathable filter 192 is provided on the outside of the heat dissipation cylinder 3. The breathable filter 192 is made of a mesh structure woven from high silica glass fiber. The filter holes of the breathable filter 192 are smaller than the diameter of diuron particles, which can prevent particles from entering the interior through the outside of the heat dissipation cylinder 3. High silica fiber is an abbreviation for high-purity silicon oxide amorphous continuous fiber. Its silicon oxide content is 96-98%, and it can withstand continuous temperatures of 1000 degrees Celsius and short-term temperatures of 1400 degrees Celsius. Its finished products mainly include continuous yarn, rope, sleeve, mesh, and sewn woven products. It is mainly used for fireproof and heat insulation at ultra-high temperature of 1000 degrees Celsius. The diameter of a single fiber is greater than 5 micrometers. It does not contain any asbestos or ceramic wool and is completely harmless to human health.

[0044] like Figure 1-8 As shown, there are two discharge ports 122. The two discharge ports 122 are respectively connected to the base 2 located directly below the inner spiral 4 and the outer spiral 5. The lower end of the discharge port 122 is connected to the outside. A sealing plug 20 is provided inside the discharge port 122. The two discharge ports 122 facilitate the discharge of materials located below the inner spiral 4 and the outer spiral 5 during unloading, so as to avoid material residue as much as possible.

[0045] Working principle: Before drying the granules, the heating mechanism is activated to preheat the inside of the drying rack 1. The material is then introduced through the feed inlet 121 into the space between the outside of the heat dissipation cylinder 3 and the inside of the drying rack 1. The high-temperature motor 8 is activated, driving the rotating shaft 7 to rotate, which in turn drives the inner spiral 4 and the outer spiral 5 to rotate. The slow rotation of the inner spiral 4 and the outer spiral 5 lifts the material from the bottom to the top, where it falls down from the upper part of the hollow ring 6 to the bottom. This cycle not only achieves horizontal mixing of the material but also vertical mixing, preventing the material at the bottom from remaining unlifted and causing excessively high temperatures. During the heating and drying process, the material's internal... The moisture is evaporated, and by starting the fan 10, some of the heat and the evaporated moisture in the air are carried away together. The air is then introduced into the dehumidification rack 111 through the exhaust pipe 112. The moisture is retained in the dehumidification mechanism inside the dehumidification rack 111, while the hot air is introduced into the rotating shaft 7 through the air inlet pipe 113. The hot air then enters the inner spiral 4 and the outer spiral 5 through the rotating shaft 7, and is sprayed out from the blower head 9 during the stirring process. This continuously blows air onto the material located in different positions, achieving internal heating and drying, which makes the drying efficiency faster and more uniform. After a certain period of time, when there is a lot of moisture in the dehumidification mechanism, the dehumidification mechanism can be replaced to reduce the possibility of moisture recirculating into the drying rack 1 and coming into contact with the material again.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A kind of diuron granule water moisture drying device, including drying frame body (1) and quartz heating tube (101), the quartz heating tube (101) is set on the inner wall of the drying frame body (1), it is characterized by, The bottom support (2) is provided with a heat dissipation cylinder (3) at the upper center position, and the outer side of the heat dissipation cylinder (3) is rotatably provided with an inner spiral (4) and an outer spiral (5). The diameter of the inner spiral (4) is smaller than that of the outer spiral (5), and a hollow ring (6) is arranged between the inner spiral (4) and the outer spiral (5) on the bottom support (2). A gap is left between the lower end of the hollow ring (6) and the bottom support (2). A rotating shaft (7) is arranged in the drying rack body (1), and the rotating shaft (7) is driven by a high-temperature-resistant motor (8). The inner spiral (4) and the outer spiral (5) are respectively connected to the rotating shaft (7). The rotating shaft (7), the inner spiral (4) and the outer spiral (5) are hollow and connected. The inner spiral (4) and the outer spiral (5) are provided with a plurality of air blowing heads (9). The rotating shaft (7) is connected to the inner spiral (4) and the outer spiral (5) through a connecting pipe (14). The air blowing heads (9) are arranged above and below the inner spiral (4) and the outer spiral (5). The air blowing heads (9) are arranged above and below the inner spiral (4) and the outer spiral (5). The number of air blowing heads (9) at the lower end of the inner spiral (4) and the outer spiral (5) is more than that at the upper end. The upper end of the drying rack body (1) is provided with a fan (10), and the outer wall of the drying rack body (1) is provided with a dehumidification rack body (111). The dehumidification rack body (111) is provided with a dehumidification mechanism. The output end of the fan (10) is connected to the upper part of the dehumidification rack body (111) through an exhaust pipe (112). The lower end of the dehumidification rack body (111) is connected to the inner part of the rotating shaft (7) through an air inlet pipe (113). The upper and lower parts of the drying rack body (1) are respectively provided with an inlet (121) and an outlet (122). The inner and outer sides of the inner spiral (4) are slidably connected to the outer wall of the heat dissipation cylinder (3) and the inner side of the hollow ring (6). The inner and outer sides of the outer spiral (5) are slidably connected to the outer side of the hollow ring (6) and the inner wall of the drying rack body (1). The inner spiral (4), the outer spiral (5) and the upper end of the hollow ring (6) are arranged at the same height. The height of the heat dissipation cylinder (3) is higher than the upper end of the hollow ring (6). The upper and lower ends of the hollow ring (6) are connected, and the upper and lower ends of the hollow ring (6) are not closed. The lower end of the hollow ring (6) is connected to the upper part of the bottom support (2) through a support block (13). The support block (13) is provided with a plurality of support blocks at equal distances.

2. The water drying device for diuron granules according to claim 1, characterized in that: The high-temperature-resistant motor (8) is arranged on the inner wall of the drying frame body (1) through a support (151), a communication pipe (152) is arranged on the upper end of the rotating shaft (7) in a sealing manner, one end of the air inlet pipe (113) away from the dehumidification frame body (111) penetrates the side wall of the drying frame body (1) and is arranged in a fixed communication manner with the communication pipe (152), and the output end of the high-temperature-resistant motor (8) is connected with a linkage shaft (153) in a linkage manner, one end of the linkage shaft (153) away from the high-temperature-resistant motor (8) penetrates the communication pipe (152) and is arranged in a linkage manner with the inner wall of the rotating shaft (7), and the linkage shaft (153) and the communication pipe (152) are arranged in a sealing and rotating manner.

3. The water drying device for diuron granules according to claim 2, characterized in that: The dehumidification mechanism comprises a water absorption bag (161) and a mounting bracket (162), the mounting bracket (162) is arranged outside the water absorption bag (161), the water absorption bag (161) is arranged on the inner wall of the dehumidification frame body (111) in a detachable and assembled manner through the mounting bracket (162), and the water absorption bag (161) is filled with high-temperature water absorption and expansion resin.

4. The water drying device for diuron granules according to claim 3, characterized in that: One side of the dehumidification frame body (111) is provided with a dismounting opening (163), the inner wall of the dehumidification frame body (111) in the dismounting opening (163) is provided with a limiting track (164), the mounting bracket (162) is arranged in a clamping and sliding manner in the limiting track (164), the outer end of the mounting bracket (162) is arranged in a sealing and clamping manner with the dismounting opening (163), the outer end of the mounting bracket (162) is provided with a clamping plate (166), and the clamping plate (166) and the outer wall of the dehumidification frame body (111) are connected in an assembled manner through bolts (165).

5. The water drying device for diuron granules according to claim 1, characterized in that: The air inlet pipe (113) is provided with a valve (17), the valve (17) is arranged at one end of the air inlet pipe (113) located outside the drying frame body (1), the lower end of the dehumidification frame body (111) is provided with an air outlet pipe (18), and the air outlet pipe (18) is provided with a plug.

6. The water drying device for diuron granules according to claim 1, characterized by: The side wall of the heat dissipation cylinder (3) is uniformly provided with a plurality of heat dissipation holes (191), and the outer side of the heat dissipation cylinder (3) is provided with a breathable filter screen (192).

7. The water drying device for diuron granules according to claim 1, characterized by: Two discharge outlets (122) are arranged on the bottom support (2) below the inner spiral (4) and the outer spiral (5) in a communication manner, the lower end of the discharge outlet (122) is in communication with the outside, and the discharge outlet (122) is provided with a sealing plug (20).

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