Automatic dehumidifying device based on grain dryer

Abstract

This utility model relates to the field of grain drying technology and discloses an automatic dehumidification device based on a grain dryer. The device includes a drying tower with a multi-layer design. An air inlet chamber is located in the middle of the inner side of the drying tower, and return chambers are located at both the front and rear ends of the inner side. A drying mechanism is located on the left side of the drying tower for drying the grain inside. A turning mechanism is located on the right side of the drying tower for turning the grain inside. In this utility model, heat is generated by energizing the heating components inside the heater, and a fan forces hot air into the air inlet chamber. The hot, humid airflow then returns to the heater for recirculation, achieving three-dimensional transport and recycling of the hot airflow. This reduces heat loss, ensures clean airflow, improves energy efficiency, provides a highly efficient dehumidification environment for the grain, and ensures uniform drying and stable quality.

Description

Technical Field

[0001] This utility model relates to the field of grain drying technology, and in particular to an automatic dehumidification device based on a grain dryer. Background Technology

[0002] A grain dryer is an agricultural machine used to reduce the moisture content of grains. It uses hot air as a medium, and through heat exchange, evaporates and removes the moisture from the grain, thus achieving the purpose of drying. It is widely used in the post-harvest processing of crops such as wheat, corn, and rice, effectively solving the problems of natural sun-drying being greatly affected by weather and having low efficiency, and providing raw materials with suitable humidity for grain storage and processing.

[0003] Grain dryers can quickly remove excess moisture from grains, preventing mold and sprouting during storage and extending their shelf life. Simultaneously, dried grains are easier to transport and process, increasing their commercial value. In large-scale agricultural production, the application of grain dryers significantly improves grain processing efficiency, reduces labor costs, and ensures post-harvest quality and safety.

[0004] Existing grain dryers generate hot airflow through a single heat source, which is then introduced into the drying chamber to contact the grain and evaporate moisture, avoiding the weather-dependent problems of natural sun drying. However, the heating systems of existing devices are mostly unilateral or unidirectional, resulting in uneven distribution of hot airflow within the drying chamber. During the drying process, the grain is mostly stationary or in a unidirectional flow state, with limited angle and area of ​​contact with the hot airflow. This leads to a single and concentrated drying method, which can easily result in localized over-drying or under-drying of the grain, affecting drying quality and efficiency. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automatic dehumidification device based on a grain dryer, which aims to improve the existing technology where the hot airflow is mostly static or unidirectional during the drying process, unevenly distributed in the drying chamber, and the angle and area of ​​contact with the hot airflow are limited, resulting in a single drying method and concentrated direction, which easily leads to the problem of local over-drying or failure to meet the drying standard of the grain.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic dehumidification device based on a grain dryer, comprising a drying tower, wherein the drying tower adopts a multi-layer design, an air inlet chamber is provided in the middle of the inner side of the drying tower, and reflux chambers are provided at both the front and rear ends of the inner side of the drying tower. A drying mechanism is provided on the left side of the drying tower for drying the grain inside the drying tower, and a turning mechanism is provided on the right side of the drying tower for turning the grain inside the drying tower.

[0007] The drying mechanism includes a heating unit. The top of the heating unit is connected to an air duct. The right side of the air duct has two output ends, which are respectively connected to the upper and lower left sides of the air inlet chamber. A fan is installed at the bottom of the air duct. The left sides of the two return chambers are connected to insulation pipes. The output ends of the two insulation pipes are connected to return pipes. The output ends of the return pipes are connected to the rear side of the heating unit. A heating component is installed inside the heating unit. A filter component is installed on the bottom left side of the air duct.

[0008] As a further description of the above technical solution:

[0009] The material turning mechanism includes an elevator, which is fixedly connected to the right side of the drying tower. The input end of the elevator is located at the rear bottom end. A diversion pipe is connected to the bottom left side of the elevator. One end of the diversion pipe is connected to the bottom left side of the elevator, and the other end is connected to the bottom output end of the drying tower. The diversion pipe is detachable. A feed pipe is connected to the top output end of the elevator, and the output end of the feed pipe is connected to the inner top of the drying tower.

[0010] As a further description of the above technical solution:

[0011] The heating assembly includes multiple insulated boxes, which are respectively fixedly connected to the top and bottom of the inner side of the heating machine. Multiple electric heating rods are fixedly connected between the multiple insulated boxes at the top and the multiple insulated boxes at the bottom.

[0012] As a further description of the above technical solution:

[0013] The filtration assembly includes a filter box, which is installed on the bottom left side of the air duct, and multiple filter plates are fitted inside the filter box.

[0014] As a further description of the above technical solution:

[0015] The drying mechanism also includes two cyclone separators, which are fixedly connected to the two inlet ends of the return pipe.

[0016] As a further description of the above technical solution:

[0017] Two exhaust pipes are installed at both the front and rear ends of the left side of the drying tower, and the input ends of the two exhaust pipes are respectively connected to the top left side of the interior of the two reflux chambers.

[0018] As a further description of the above technical solution:

[0019] The drying tower is internally fixedly connected to multiple support rods, and the multiple support rods are provided with diagonal braces, which are triangular in design.

[0020] As a further description of the above technical solution:

[0021] Multiple angular boxes are fixedly connected to the bottom inner side of the drying tower, and all of the angular boxes adopt a triangular design.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the heating components inside the heater generate heat when energized, and the fan forces the hot air into the air duct. After being filtered by the filter components, the hot air enters the air inlet chamber from the dual output ends. The hot and humid airflow returns to the heater for recirculation through the return chamber, the insulation pipe, the cyclone separator, and the return pipe. This realizes three-dimensional transportation and recycling of hot airflow, reduces heat loss, ensures clean airflow, improves energy utilization, provides an efficient dehumidification environment for grain, and ensures uniform drying and stable quality.

[0024] 2. In this utility model, the grain conveyed from the bottom of the drying tower through the diversion pipe is transported upward by the elevator and sent back to the top of the drying tower through the feed pipe. During the fall of the grain, it comes into contact with the hot airflow again. The diversion pipe is detachable for easy cleaning. The elevator and the grain fall direction form a reverse circulation, realizing multiple cycles of grain drying, reducing local unevenness in dryness and wetness, extending the residence time to improve heat exchange efficiency, ensuring uniform heating of the grain, preventing residual grain from becoming moldy, and ensuring stable drying quality. Attached Figure Description

[0025] Figure 1 This is a front view of an automatic dehumidification device based on a grain dryer proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the drying tower in an automatic dehumidification device based on a grain dryer proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the drying mechanism in an automatic dehumidification device based on a grain dryer proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of the heater in an automatic dehumidification device based on a grain dryer proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the corner box in an automatic dehumidification device based on a grain dryer proposed in this utility model;

[0030] Figure 6 This is a schematic diagram of the support rod in an automatic dehumidification device based on a grain dryer proposed in this utility model.

[0031] Legend:

[0032] 1. Drying tower; 2. Air inlet chamber; 3. Reflux chamber; 4. Drying mechanism; 41. Heating unit; 42. Air duct; 43. Fan; 44. Insulation pipe; 45. Reflux pipe; 46. Heating assembly; 461. Insulation box; 462. Electric heating rod; 47. Filter assembly; 471. Filter box; 472. Filter plate; 48. Cyclone separator; 5. Turning mechanism; 51. Elevator; 52. Drainage pipe; 53. Feed pipe; 6. Exhaust pipe; 7. Support rod; 8. Corner box. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1-4 An embodiment of this utility model is provided: an automatic dehumidification device based on a grain dryer, including a drying tower 1. The drying tower 1 adopts a multi-layer design. An air inlet chamber 2 is provided in the middle of the inner side of the drying tower 1. A return chamber 3 is provided at both the front and rear ends of the inner side of the drying tower 1. A drying mechanism 4 is provided on the left side of the drying tower 1. The drying mechanism 4 is used to dry the grain inside the drying tower 1. A turning mechanism 5 is provided on the right side of the drying tower 1. The turning mechanism 5 is used to turn the grain inside the drying tower 1.

[0035] The drying mechanism 4 includes a heater 41. The top of the heater 41 is connected to an air duct 42. Two output ends are located on the right side of the air duct 42, respectively connected to the upper and lower left sides of the air inlet chamber 2. A fan 43 is installed at the bottom of the air duct 42. Insulation pipes 44 are connected to the left sides of both return chambers 3. The output ends of both insulation pipes 44 are connected to return pipes 45. The output ends of the return pipes 45 are connected to the rear side of the heater 41. A heating assembly 46 is installed inside the heater 41. The heating assembly 46 includes multiple insulated boxes 461. 461 are fixedly connected to the top and bottom of the inner side of the heating machine 41 respectively. Multiple electric heating rods 462 are fixedly connected between the multiple insulation boxes 461 at the top and the multiple insulation boxes 461 at the bottom. A filter assembly 47 is provided on the bottom left side of the air duct 42. The filter assembly 47 includes a filter box 471. The filter box 471 is installed on the bottom left side of the air duct 42. Multiple filter plates 472 are snapped into the inside of the filter box 471. The drying mechanism 4 also includes two cyclone separators 48. The two cyclone separators 48 are fixedly connected to the two input ends of the return pipe 45 respectively.

[0036] Specifically, multiple electric heating rods 462 are fixed between the top and bottom insulation boxes 461 inside the heater 41. The air duct 42 connects the top of the heater 41 to the air inlet chamber 2. A fan 43 is installed at the bottom. Multiple filter plates 472 are clamped inside the left filter box 471. The two return chambers 3 are connected to the rear of the heater 41 via the insulation pipe 44, the cyclone separator 48 and the return pipe 45.

[0037] The electric heating rod 462 generates heat when powered on. The heat insulation box 461 prevents the heat from spreading to the outer wall of the heater 41, reducing heat loss. The fan 43 compresses the hot air in the heater 41 into the air duct 42. After the airflow passes through the filter plate 472 to remove impurities in the air, it enters the upper and lower parts of the air intake chamber 2 from the two output ends respectively.

[0038] The hot airflow diffuses from the air inlet chamber 2 into the interior of the drying tower 1, making full contact with the multi-layered grain and absorbing the moisture from the grain; the humid and hot airflow after absorbing moisture flows forward and backward and converges in the return chamber 3.

[0039] When the hot and humid airflow is transported through the insulation pipe 44, the insulation layer of the insulation pipe 44 reduces heat loss and maintains the airflow temperature; then the airflow enters the cyclone separator 48, where the dust and some water vapor carried are separated under the action of centrifugal force, and the purified airflow returns to the heater 41 along the return pipe 45.

[0040] The return airflow is reheated by the electric heating rod 462 and returns to the set temperature before re-entering the air duct 42, forming a closed loop circulation; the filter plate 472 can be replaced regularly to maintain the filtration effect and prevent impurities from clogging the duct.

[0041] The dual output ends of the air duct 42 create a staggered airflow distribution within the air inlet chamber 2, ensuring that grains of different grades can come into contact with the hot airflow; the dust and water vapor separated by the cyclone separator 48 are discharged through the outlet to prevent accumulation in the duct.

[0042] The insulated box 461 and the insulation pipe 44 work together to reduce system heat loss and improve energy efficiency; the circulation path formed by the return pipe 45 and the air guide pipe 42 allows the hot airflow to continuously act on the grain; the filter assembly 47 and the cyclone separator 48 ensure clean airflow and avoid contaminating the grain.

[0043] The drying unit 4 achieves efficient dehumidification of the grain inside the drying tower 1 through hot air circulation heating, three-dimensional conveying and purification treatment, providing a suitable drying environment for the operation of the turning unit 5, and ensuring that the grain is dried evenly and has stable quality.

[0044] Reference Figure 1 and Figure 2The material turning mechanism 5 includes an elevator 51, which is fixedly connected to the right side of the drying tower 1. The input end of the elevator 51 is located at the bottom rear end. A guide pipe 52 is connected to the bottom left side of the elevator 51. One end of the guide pipe 52 is connected to the bottom left side of the elevator 51, and the other end is connected to the bottom output end of the drying tower 1. The guide pipe 52 is designed to be detachable. A feed pipe 53 is connected to the top output end of the elevator 51. The output end of the feed pipe 53 is connected to the top inner side of the drying tower 1.

[0045] Specifically, the elevator 51 is fixed to the right side of the drying tower 1, with the input end located at the bottom rear end. The other end of the diversion pipe 52 connected to the bottom left side is connected to the bottom output end of the drying tower 1, and the feed pipe 53 at the top output end is connected to the top inner side of the drying tower 1. The diversion pipe 52 adopts a detachable design for easy cleaning and maintenance.

[0046] The grain inside the drying tower 1 moves downward under the action of gravity, and the grain at the bottom enters the guide pipe 52 through the output end; the guide pipe 52 guides the grain to flow towards the input end of the elevator 51, so as to avoid the grain accumulating at the bottom of the drying tower 1.

[0047] After the elevator 51 is started, it will convey the grain received at the input end upward and send it into the feed pipe 53 through the top output end; the feed pipe 53 will guide the grain to the top of the inner side of the drying tower 1, so that the grain will fall again and pass through each drying area.

[0048] During the falling process, the grain comes into contact with the hot airflow generated by the drying unit 4 again, and the parts that are not fully dried can continue to be dehumidified; after multiple cycles, the overall humidity of the grain tends to be uniform, reducing local unevenness in dryness and moisture.

[0049] The detachable design of the diversion pipe 52 allows it to be removed when the equipment is stopped to remove residual grain debris and prevent mold contamination; the conveying direction of the elevator 51 forms a reverse circulation with the natural falling direction of the grain, which prolongs the residence time of the grain in the drying tower 1.

[0050] The output end of the feed pipe 53 is located in the center area of ​​the top inside the drying tower 1, so that the grain is evenly dispersed when it falls and avoids being concentrated in a certain area; the conveying speed of the elevator 51 is matched with the grain falling speed to ensure that the circulation process is continuous and stable.

[0051] The turning mechanism 5 works in conjunction with the drying mechanism 4. The turning process causes the grain to continuously change the surface that comes into contact with the hot airflow, thereby improving the heat exchange efficiency. The guiding effect of the diversion pipe 52 and the feed pipe 53 ensures the stability of the grain circulation path and provides continuous turning power for the grain inside the drying tower 1, ensuring that the grain is heated evenly during the multi-layer drying process.

[0052] Reference Figure 1 , Figure 5 and Figure 6Two exhaust pipes 6 are installed at the front and rear ends of the left side of the drying tower 1. The input ends of the two exhaust pipes 6 are respectively connected to the top left of the two return chambers 3. Multiple support rods 7 are fixedly connected inside the drying tower 1. Diagonal braces are provided between the multiple support rods 7, and they are triangular in design. Multiple corner boxes 8 are fixedly connected to the bottom inside the drying tower 1. All corner boxes 8 are triangular in design.

[0053] Specifically, two exhaust pipes 6 installed at the front and rear ends of the left side of the drying tower 1 have their input ends connected to the top left side of the two return chambers 3, respectively, which can directly discharge excess hot and humid airflow from the return chambers 3; multiple support rods 7 fixedly connected inside the drying tower 1 are provided with diagonal bracing and have a triangular design to support the internal structure of the tower; multiple corner boxes 8 fixedly connected to the bottom inside the drying tower 1 are also triangular in design to support the falling grain; when there is too much hot and humid airflow in the return chamber 3, exceeding the recycling requirements, the excess airflow is discharged from the drying tower 1 through the exhaust pipes 6, avoiding excessive internal air pressure from affecting airflow circulation, and at the same time, timely discharge of some water vapor, reducing the humidity of the return airflow and reducing the reheating burden of the heating components 46; the triangular design of the support rods 7 utilizes the stability of triangles to distribute the grain weight and the force generated by the internal air pressure on the drying tower 1, preventing the tower from deforming due to excessive force, and the diagonal bracing enhances the connection strength between the support rods 7, so that multiple support rods 7 form an integral support structure to meet the load-bearing requirements of the multi-layer design of the drying tower 1; the corner boxes at the bottom inside The triangular structure of the corner box 8 increases the contact area with the grain. When the grain falls into the corner box 8, it will slide down the slope and avoid accumulating at the bottom. This distribution ensures that the grain flows evenly to the inlet of the diversion pipe 52, ensuring the stable feeding of the turning mechanism 5. The connection between the exhaust pipe 6 and the return chamber 3 is located at the top, which can preferentially discharge the hot and humid airflow that accumulates in the upper part of the return chamber 3, reducing interference with the lower circulating airflow. The installation position of the support rod 7 avoids the grain falling and airflow path, so as not to affect the drying and turning process. The triangular design of the corner box 8 makes it difficult for grain to remain at the corners, reducing cleaning dead corners. The discharge function of the exhaust pipe 6 and the circulation function of the return pipe 45 work together to flexibly adjust the airflow balance according to the internal humidity of the drying tower 1. The triangular structure of the support rod 7 and the corner box 8 together enhances the structural stability of the drying tower 1, ensuring that the tower maintains its shape when bearing the pressure of grain and airflow. The exhaust pipe 6 helps to maintain the appropriate drying humidity inside by timely discharging excess hot and humid airflow. Together with the drying mechanism 4 and the turning mechanism 5, it ensures the stability of the grain drying process.

[0054] Working principle: During operation, the grain to be dried is sent into the drying tower 1 and falls into the multi-layered bearing area to begin drying. The drying mechanism 4 is activated, and the electric heating rod 462 in the heater 41 is energized to generate heat. The top and bottom insulation boxes 461 tightly wrap the two ends of the electric heating rod 462, effectively preventing heat from diffusing to the outer wall of the heater 41 and reducing heat loss. The fan 43 operates, pressing the heated air in the heater 41 into the air guide duct 42. The airflow flows in the air guide duct 42. When it passes through the filter box 471, multiple filter plates 472 inside filter the airflow, removing impurities and particles. The filtered clean hot airflow continues to flow and enters the upper and lower middle parts of the air inlet chamber 2 from the two output ends on the right side of the air guide duct 42, respectively. The hot airflow diffuses from the air inlet chamber 2 to all directions inside the drying tower 1, making full contact with the multi-layered grain and absorbing the moisture contained in the grain.

[0055] After absorbing moisture, the hot and humid airflow gradually flows towards the front and rear sides of the drying tower 1, eventually converging in the return chamber 3. During the transport of the hot and humid airflow through the insulation pipe 44, the insulation layer of the insulation pipe 44 plays a role in reducing heat loss during transport and maintaining the airflow temperature. Subsequently, the hot and humid airflow enters the cyclone separator 48, where, under the action of centrifugal force, the dust and some water vapor carried in the airflow are separated and discharged from the outlet of the cyclone separator 48. The purified airflow flows along the return pipe 45 and eventually returns to the heater 41. The returned airflow is reheated by the electric heating rod 462 and restored to the required temperature before re-entering the air guide pipe 42, forming a complete closed-loop cycle. When there is too much hot and humid airflow in the return chamber 3, exceeding the recycling requirements, the excess hot and humid airflow will be discharged outside the drying tower 1 through the exhaust pipe 6 to prevent the internal air pressure of the drying tower 1 from being too high and affecting the overall airflow circulation.

[0056] The turning mechanism 5 operates synchronously with the drying mechanism 4, playing a turning role in the grain drying process. Under the action of gravity, the grain at the bottom of the drying tower 1 enters the diversion pipe 52 through the bottom output end. The diversion pipe 52 guides the grain, guiding it smoothly to the input end of the elevator 51. The elevator 51 starts, conveying the grain received at the input end upwards and sending it into the feed pipe 53 through the top output end. Under the guidance of the feed pipe 53, the grain is conveyed to the inner top of the drying tower 1. The grain that reaches the top falls again under the action of gravity, passes through each drying zone, and comes into contact with the hot airflow again for dehumidification. After multiple such cycles, the overall humidity of the grain gradually becomes more uniform, reducing local unevenness in dryness and moisture.

[0057] The drying tower 1 has multiple support rods 7 inside, with diagonal bracing between them, and the overall structure adopts a triangular design. This structure utilizes the stability of a triangle to effectively distribute the weight of the grain and the force generated by the internal air pressure, providing stable support for the internal structure of the drying tower 1 and preventing deformation of the tower body due to excessive stress. The multiple angular boxes 8 at the bottom inner side of the drying tower 1 also adopt a triangular design. When the grain falls to this location, the angular boxes 8 bear the grain. Simultaneously, the triangular structure allows the grain to slide down the slope in a dispersed manner, preventing grain accumulation at the bottom and ensuring that the grain flows evenly to the inlet of the drainage pipe 52. The filter plate 472 needs... Regular replacement is necessary to maintain good filtration and prevent impurities from clogging the air duct 42; dust and water vapor separated by the cyclone separator 48 should be discharged in a timely manner to prevent accumulation in the duct and affect airflow; the diversion pipe 52 is designed to be detachable, and can be removed when the equipment is stopped to remove residual grain debris and prevent mold growth that could contaminate the grain being processed later; the output end of the feed pipe 53 is designed to be evenly distributed as the grain falls from the top of the drying tower 1, avoiding concentrated accumulation in a certain area; the conveying speed of the elevator 51 is matched with the falling speed of the grain to ensure a continuous and stable grain circulation process.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic dehumidification device based on a grain dryer, comprising a drying tower (1), characterized in that: The drying tower (1) adopts a multi-layer design. An air inlet chamber (2) is provided in the middle of the inner side of the drying tower (1). A return chamber (3) is provided at both the front and rear ends of the inner side of the drying tower (1). A drying mechanism (4) is provided on the left side of the drying tower (1). The drying mechanism (4) is used to dry the grain inside the drying tower (1). A turning mechanism (5) is provided on the right side of the drying tower (1). The turning mechanism (5) is used to turn the grain inside the drying tower (1). The drying mechanism (4) includes a heater (41), the top of which is connected to an air duct (42). The air duct (42) has two output ends on the right side, which are respectively connected to the upper and lower left side of the air inlet chamber (2). A fan (43) is installed at the bottom of the air duct (42). The left side of each of the two return chambers (3) is connected to an insulation pipe (44). The output ends of each of the two insulation pipes (44) are connected to a return pipe (45). The output end of the return pipe (45) is connected to the rear side of the heater (41). The heater (41) is equipped with a heating component (46). A filter component (47) is provided on the bottom left side of the air duct (42).

2. The automatic dehumidification device based on a grain dryer according to claim 1, characterized in that: The material turning mechanism (5) includes an elevator (51), which is fixedly connected to the right side of the drying tower (1). The input end of the elevator (51) is located at the bottom rear end. A guide pipe (52) is connected to the bottom left side of the elevator (51). One end of the guide pipe (52) is connected to the bottom left side of the elevator (51), and the other end is connected to the bottom output end of the drying tower (1). The guide pipe (52) is designed to be detachable. A feed pipe (53) is connected to the top output end of the elevator (51), and the output end of the feed pipe (53) is connected to the top inner side of the drying tower (1).

3. The automatic dehumidification device based on a grain dryer according to claim 1, characterized in that: The heating assembly (46) includes multiple insulation boxes (461), which are respectively fixedly connected to the top and bottom of the inner side of the heating machine (41). Multiple electric heating rods (462) are fixedly connected between the multiple insulation boxes (461) at the top and the multiple insulation boxes (461) at the bottom.

4. An automatic dehumidification device based on a grain dryer according to claim 1, characterized in that: The filter assembly (47) includes a filter box (471) installed on the bottom left side of the air duct (42), and multiple filter plates (472) are engaged inside the filter box (471).

5. An automatic dehumidification device based on a grain dryer according to claim 1, characterized in that: The drying mechanism (4) also includes two cyclone separators (48), which are fixedly connected to the two input ends of the return pipe (45).

6. An automatic dehumidification device based on a grain dryer according to claim 1, characterized in that: Two exhaust pipes (6) are installed at the front and rear ends of the left side of the drying tower (1), and the input ends of the two exhaust pipes (6) are respectively connected to the top left side of the two return chambers (3).

7. An automatic dehumidification device based on a grain dryer according to claim 1, characterized in that: The drying tower (1) is internally fixedly connected with multiple support rods (7), and the multiple support rods (7) are provided with diagonal bracing and are designed in a triangular shape.

8. An automatic dehumidification device based on a grain dryer according to claim 1, characterized in that: Multiple angular boxes (8) are fixedly connected to the bottom inner side of the drying tower (1), and all of the multiple angular boxes (8) adopt a triangular design.

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