Corn drying hot air uniform distribution device

Abstract

This utility model discloses a hot air distribution device for corn drying, relating to the technical field of grain drying equipment. It includes a first U-shaped plate, an air supply mechanism disposed on one side of the first U-shaped plate, a support and limiting mechanism disposed in the U-shaped internal space of the first U-shaped plate, a drum rotation mechanism disposed in the U-shaped internal space of the first U-shaped plate, a translational scraping mechanism disposed in the U-shaped internal space of the first U-shaped plate, and a feeding conveying mechanism disposed on the outside of the first U-shaped plate. This utility model supplies hot air to the internal space of the first U-shaped plate through the air supply mechanism, the drum rotation mechanism drives the corn kernels to be dried to rotate, the translational scraping mechanism moves back and forth along the length of the first U-shaped plate and pushes the corn kernels from the bottom of the inner wall of the drum, and the discharge end of the feeding conveying mechanism extends into the drum rotation mechanism. It has the advantages of uniform drying, reasonable hot air distribution, and smooth material feeding.

Description

Technical Field

[0001] This utility model relates to the technical field of grain drying equipment, specifically a hot air uniform distribution device for corn drying. Background Technology

[0002] Corn is an important food crop in my country. During the post-harvest storage and processing, corn needs to be dried to reduce its moisture content and prevent mold and pests. Hot air drying is currently the most widely used method for drying corn. Its principle is to introduce hot air into the drying chamber, and use the convective heat exchange between the hot air and the corn kernels to evaporate the moisture in the corn and expel it with the airflow.

[0003] Currently, most common corn hot air drying devices use fixed hot air ducts to introduce hot air into the corn pile. However, existing devices have the following shortcomings in practical applications: First, the distribution of hot air within the corn pile is uneven, with corn near the air inlet drying faster than corn further away, resulting in inconsistent moisture content after drying. Second, the corn kernels remain stationary during the drying process, making it difficult for hot air to penetrate deeper layers of material, leading to insufficient contact between the bottom layer of corn and the hot air, resulting in low drying efficiency. Third, some corn kernels remain and accumulate at the bottom of the drying device during the drying process, forming dead zones that are either too dry or too wet, affecting the overall drying quality.

[0004] Therefore, how to design a corn drying hot air uniform distribution device that can tumble and stir materials and effectively push the bottom material has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a corn drying hot air uniform distribution device, which has the advantages of uniform drying, reasonable hot air distribution, and smooth material feeding, and solves the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A corn drying hot air uniform distribution device includes a first U-shaped plate, an air supply mechanism disposed on one side of the first U-shaped plate, a support and limiting mechanism disposed in the U-shaped internal space of the first U-shaped plate, a roller rotation mechanism disposed in the U-shaped internal space of the first U-shaped plate, a translational scraping heat mechanism disposed in the U-shaped internal space of the first U-shaped plate, and a feeding and conveying mechanism disposed on the outside of the first U-shaped plate. The first U-shaped plate has an inverted U-shaped structure; The air outlet of the air supply mechanism faces the internal space of the first U-shaped plate; The support and limiting mechanism is set in the U-shaped internal space of the first U-shaped plate, and the roller rotation mechanism is rotatably mounted on the support and limiting mechanism; The drum rotation mechanism has an internal cavity for holding the corn kernels to be dried; The moving end of the translational heat scraping mechanism reciprocates along the length of the first U-shaped plate; The discharge end of the feeding conveyor extends into the interior of the drum rotating mechanism; A gap of 0.3mm to 0.8mm is left between the lower end face of the U-shaped block of the translational scraping mechanism and the bottom surface of the inner wall of the roller rotation mechanism.

[0007] Preferably, the air supply mechanism includes a second U-shaped plate fixedly connected to the inner wall of one side of the first U-shaped plate, a plurality of ventilation slots penetrating the second U-shaped plate near the center of the first U-shaped plate, and a plurality of air heating rods fixedly connected between the upper and lower end faces of the inner wall of the second U-shaped plate; the plurality of ventilation slots are equidistantly distributed along the length of the second U-shaped plate; a plurality of axial flow fans are fixedly connected through one side of the first U-shaped plate, and the air outlet of the axial flow fans is set towards the second U-shaped plate.

[0008] It is worth noting that the air supply mechanism blows external air into the second U-shaped plate through an axial flow fan. The air is heated by the air heating rod and becomes hot air. The hot air is evenly blown onto the outer peripheral wall of the drum rotation mechanism through multiple equally spaced ventilation slots. The equally spaced ventilation slots ensure that the hot air enters evenly at all points along the drum axis, avoiding local overheating or overcooling.

[0009] Preferably, the support limiting mechanism includes a first support block fixedly connected to the bottom surface of the U-shaped internal space of the first U-shaped plate and a first U-shaped frame fixedly connected to the inner wall of the U-shaped internal space of the first U-shaped plate; the first support block is located on the side of the U-shaped internal space of the first U-shaped plate away from the air supply mechanism, and the first U-shaped frame is located on the side of the U-shaped internal space of the first U-shaped plate close to the air supply mechanism.

[0010] It is worth noting that the first support block and the first U-shaped frame are respectively set on both sides of the U-shaped internal space of the first U-shaped plate. The first support block provides rotational support for the roller rotation mechanism on the side away from the air supply mechanism, and the first U-shaped frame provides rotational support for the roller rotation mechanism on the side close to the air supply mechanism. Together, they form a double-sided rotational support structure for the roller rotation mechanism.

[0011] Preferably, the drum rotation mechanism includes a geared cylinder rotatably mounted on a first U-shaped frame, a first motor fixedly connected to one end of the geared cylinder's rotating shaft, a second U-shaped frame fixedly connected to the inner wall of the first U-shaped plate's U-shaped interior space on the side away from the air supply mechanism, a rotating cylinder rotatably mounted on the second U-shaped frame, and a geared ring fixedly connected to the outer peripheral wall of the rotating cylinder; the geared ring and the geared cylinder mesh with each other; multiple through holes are provided through the side wall of the rotating cylinder; the output shaft of the first motor is fixedly connected to the rotating shaft of the geared cylinder; the axis of the geared cylinder and the axis of the rotating cylinder are arranged parallel to each other.

[0012] It is worth noting that the drum rotation mechanism drives the gear cylinder to rotate through the first motor. The gear cylinder drives the rotating drum to rotate around its own axis through the meshing transmission of the gear ring. The corn kernels inside the rotating drum are constantly tumbling under the action of the drum rotation, so that the moisture on the surface of each kernel evaporates evenly. At the same time, multiple through holes on the side wall of the rotating drum allow hot air to enter the inside of the drum from the side, increasing the contact area between the hot air and the corn kernels.

[0013] Preferably, the translational scraping mechanism includes two fixed blocks, a limiting post fixedly connected to one end of the two fixed blocks close to each other, a slide cylinder sleeved on the outer peripheral wall of the limiting post, a connecting block fixedly connected to the lower end of the slide cylinder, a U-shaped block fixedly connected to the lower end of the connecting block, two support seats fixedly connected to the bottom surface of the U-shaped internal space of the first U-shaped plate, a lead screw rotatably installed between the two support seats, a threaded sleeve threaded to the outer peripheral wall of the lead screw, a bearing block fixedly connected to the side wall of the first U-shaped plate, and a second motor fixedly connected to the upper end of the bearing block; the two fixed blocks are located inside the U-shaped internal space of the first U-shaped plate; the threaded sleeve is fixedly connected to one end of the U-shaped block through it; the output shaft of the second motor is fixedly connected to one end of the lead screw; the slide cylinder is slidably arranged along the axial direction of the limiting post; the axis of the lead screw and the axis of the limiting post are parallel to each other.

[0014] It is worth noting that the translational scraping mechanism drives the lead screw to rotate via a second motor. The threaded engagement between the lead screw and the threaded sleeve converts the rotational motion into linear motion of the threaded sleeve and the U-shaped block. The sliding cylinder along the limiting post provides guidance for the movement of the U-shaped block. The parallel arrangement of the axes of the limiting post and the lead screw ensures the straightness and stability of the movement of the U-shaped block.

[0015] Preferably, the lower end of the U-shaped block has multiple ventilation holes, and multiple electric heating rods are fixedly connected to the inner wall of the U-shaped block; the end of the U-shaped block facing the support base is open.

[0016] It is worth noting that the electric heating rod on the inner wall of the U-shaped block heats the air that enters the U-shaped block through the ventilation hole. The heated air flows out from the open end of the U-shaped block and heats the inner wall of the rotating drum as the U-shaped block moves along the axis of the rotating drum. This pushes the corn kernels that are on the bottom surface of the inner wall of the rotating drum away from the fixed block and pushes them out of the rotating drum. At the same time, it provides auxiliary heating for the corn kernels.

[0017] Preferably, the feeding and conveying mechanism includes a second support block disposed outside the first U-shaped plate, a conveying cylinder fixedly connected to the upper end of the second support block, a feeding frame that is fixedly connected through the upper end of the conveying cylinder and communicates with the inside of the conveying cylinder, a third motor fixedly connected to one end of the conveying cylinder, a rotating rod fixedly connected to the output shaft of the third motor, an auger fixedly connected to the outer peripheral wall of the rotating rod, and a discharge chute that is opened through the lower end of the conveying cylinder; the rotating rod is rotatably installed inside the conveying cylinder; the auger is spirally arranged along the axial direction of the rotating rod; and the discharge chute is located inside the rotating cylinder.

[0018] It is worth noting that the feeding conveying mechanism drives the rotating rod and auger to rotate via a third motor. The spiral structure of the auger pushes the corn kernels in the feeding frame along the conveying cylinder axis to the discharge chute. The corn kernels fall into the rotating cylinder through the discharge chute. The quantitative pushing capability of the auger allows the corn kernels to enter the rotating cylinder at a uniform rate, avoiding the unevenness of manual feeding.

[0019] Preferably, there are two toothed rings, which are axially spaced along the outer peripheral wall of the rotating cylinder near one end of the toothed cylinder, and both toothed rings mesh with the toothed cylinder.

[0020] It is worth noting that the two toothed rings are spaced apart along the axial direction of the rotating cylinder, so that the meshing transmission between the toothed cylinder and the rotating cylinder forms a symmetrical force distribution at both ends of the rotating cylinder. Compared with the single-point transmission of a single toothed ring, the double toothed ring structure makes the rotation of the rotating cylinder more stable and reduces the radial runout of the cylinder.

[0021] Preferably, the internal thread of the threaded sleeve is adapted to the external thread of the lead screw; the axial direction of the lead screw is parallel to the axial direction of the limiting post.

[0022] It is worth noting that the threaded engagement between the threaded sleeve and the lead screw converts the rotational motion of the lead screw into the linear motion of the threaded sleeve. The parallel arrangement of the lead screw axis and the limit column axis ensures that the U-shaped block is subjected to uniform force at both ends during movement, preventing skewing or jamming during movement.

[0023] Preferably, multiple through holes are evenly and equidistantly distributed along the circumference of the rotating cylinder; the rotating cylinder has a cylindrical structure with a circular arc surface on the bottom of its inner wall, and the lower end face of the U-shaped block is an arc surface that matches the circular arc surface on the bottom of the inner wall of the rotating cylinder.

[0024] It is worth noting that the arc surface of the bottom of the inner wall of the rotating drum is matched with the arc surface of the lower end of the U-shaped block, so that the gap between the lower end of the U-shaped block and the bottom of the inner wall of the rotating drum remains uniform when the U-shaped block moves along the axis of the rotating drum. The matching of the arc surface reduces the dead angle between the U-shaped block and the drum wall, and improves the pushing effect on the corn kernels that remain on the bottom of the inner wall of the rotating drum.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up an air supply mechanism in conjunction with a drum rotation mechanism, allows hot air to be evenly blown onto the outer wall of the rotating drum through multiple equally spaced ventilation slots. The corn kernels tumble continuously inside the drum, and the surface of each kernel is in full contact with the hot air. This solves the problems of uneven hot air distribution and uneven drying caused by static accumulation of corn kernels in existing devices, and significantly improves the drying uniformity. 2. This utility model, by setting up a translational scraping mechanism, allows the U-shaped block to reciprocate along the axis of the rotating drum. Its lower end face pushes the corn kernels that remain on the bottom surface of the inner wall of the rotating drum away from the fixed block. At the same time, the hot air generated by the electric heating rod flows out from the opening end to assist in heating the corn kernels, thus solving the problem of material accumulation at the bottom of the existing device forming a dead zone. 3. By setting up a feeding and conveying mechanism, the auger pushes corn kernels quantitatively into the inside of the rotating drum, so that the corn kernels enter the drying area at a uniform rate, which solves the problem of uneven feeding in the existing manual feeding and ensures the continuity and stability of the drying process. Attached Figure Description

[0026] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The diagram shows a three-dimensional structural schematic of the support limiting mechanism and the roller rotation mechanism of this utility model. Figure 3 The diagram shown is a three-dimensional structural schematic of the translational heat scraping mechanism of this utility model. Figure 4 The diagram shown is a three-dimensional structural schematic of the air supply mechanism of this utility model. Figure 5 The diagram shown is a three-dimensional structural schematic of the U-shaped block of this utility model; Figure 6 The diagram shown is a three-dimensional structural schematic of the feeding and conveying mechanism of this utility model.

[0027] Reference numerals: 1. First U-shaped plate; 2. Axial flow fan; 3. First support block; 4. First U-shaped frame; 5. Gear cylinder; 6. First motor; 7. Second U-shaped frame; 8. Rotary drum; 9. Through hole; 10. Gear ring; 11. Fixing block; 12. Limiting post; 13. Slide cylinder; 14. Connecting block; 15. U-shaped block; 16. Support seat; 17. Lead screw; 18. Threaded sleeve; 19. Bearing block; 20. Second motor; 21. Second U-shaped plate; 22. Ventilation slot; 23. Air heating rod; 24. Ventilation hole; 25. Electric heating rod; 26. Second support block; 27. Conveying cylinder; 28. Third motor; 29. ​​Rotating rod; 30. Screwdriver; 31. Feed frame; 32. Discharge chute. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0029] To address the problems of uneven hot air distribution, static accumulation of corn kernels, and dead zones formed by material buildup at the bottom in existing technologies, the following technical solution is proposed. Please refer to [link / reference]. Figures 1-6 ; A corn drying hot air uniform distribution device includes a first U-shaped plate 1, an air supply mechanism disposed on one side of the first U-shaped plate 1, a support and limiting mechanism disposed in the U-shaped internal space of the first U-shaped plate 1, a roller rotation mechanism disposed in the U-shaped internal space of the first U-shaped plate 1, a translational scraping heat mechanism disposed in the U-shaped internal space of the first U-shaped plate 1, and a feeding conveying mechanism disposed on the outside of the first U-shaped plate 1; the first U-shaped plate 1 has an inverted U-shaped structure; the air outlet of the air supply mechanism faces the internal space of the first U-shaped plate 1. The support and limiting mechanism is set in the U-shaped internal space of the first U-shaped plate 1, and the drum rotating mechanism is rotatably mounted on the support and limiting mechanism; the drum rotating mechanism has a cavity inside for accommodating the corn kernels to be dried; the moving end of the translational scraping mechanism moves back and forth along the length direction of the first U-shaped plate 1; the discharge end of the feeding conveying mechanism extends into the interior of the drum rotating mechanism; a gap of 0.3mm to 0.8mm is left between the lower end face of the U-shaped block 15 of the translational scraping mechanism and the bottom surface of the inner wall of the drum rotating mechanism.

[0030] In this embodiment, specifically, as follows: Figure 4 As shown, the air supply mechanism includes a second U-shaped plate 21 fixedly connected to the inner wall of one side of the first U-shaped plate 1, a plurality of ventilation slots 22 that penetrate through the second U-shaped plate 21 near the center of the first U-shaped plate 1, and a plurality of air heating rods 23 fixedly connected between the upper and lower end faces of the inner wall of the second U-shaped plate 21; the plurality of ventilation slots 22 are equidistantly distributed along the length direction of the second U-shaped plate 21; a plurality of axial flow fans 2 are fixedly connected through one side of the first U-shaped plate 1, and the air outlet of the axial flow fans 2 is set towards the second U-shaped plate 21.

[0031] In this embodiment, specifically, as follows: Figure 2 As shown, the support limiting mechanism includes a first support block 3 fixedly connected to the bottom surface of the U-shaped internal space of the first U-shaped plate 1 and a first U-shaped frame 4 fixedly connected to the inner wall of the U-shaped internal space of the first U-shaped plate 1; the first support block 3 is located on the side of the U-shaped internal space of the first U-shaped plate 1 away from the air supply mechanism, and the first U-shaped frame 4 is located on the side of the U-shaped internal space of the first U-shaped plate 1 close to the air supply mechanism.

[0032] In this embodiment, specifically, as follows: Figure 2As shown, the drum rotation mechanism includes a geared cylinder 5 rotatably mounted on a first U-shaped frame 4, a first motor 6 fixedly connected to one end of the shaft of the geared cylinder 5, a second U-shaped frame 7 fixedly connected to the inner wall of the U-shaped space of the first U-shaped plate 1 away from the air supply mechanism, a rotating cylinder 8 rotatably mounted on the second U-shaped frame 7, and a geared ring 10 fixedly connected to the outer peripheral wall of the rotating cylinder 8; the geared ring 10 meshes with the geared cylinder 5; multiple through holes 9 are provided through the side wall of the rotating cylinder 8; the output shaft of the first motor 6 is fixedly connected to the shaft of the geared cylinder 5; the axis of the geared cylinder 5 and the axis of the rotating cylinder 8 are arranged parallel to each other.

[0033] In this embodiment, specifically, as follows: Figure 2 , Figure 3 and Figure 5 As shown, the translational scraping mechanism includes two fixed blocks 11, a limiting post 12 fixedly connected to one end of the two fixed blocks 11 close to each other, a slide cylinder 13 sleeved on the outer peripheral wall of the limiting post 12, a connecting block 14 fixedly connected to the lower end of the slide cylinder 13, a U-shaped block 15 fixedly connected to the lower end of the connecting block 14, two support seats 16 fixedly connected to the bottom surface of the U-shaped internal space of the first U-shaped plate 1, a lead screw 17 rotatably installed between the two support seats 16, and a screw threaded onto the outer peripheral wall of the lead screw 17. The system includes a threaded sleeve 18, a support block 19 fixedly connected to the side wall of the first U-shaped plate 1, and a second motor 20 fixedly connected to the upper end of the support block 19; two fixing blocks 11 are located within the U-shaped interior space of the first U-shaped plate 1; the threaded sleeve 18 is fixedly connected through to one end of the U-shaped block 15; the output shaft of the second motor 20 is fixedly connected to one end of the lead screw 17; the slide cylinder 13 is slidably arranged along the axial direction of the limiting post 12; the axis of the lead screw 17 is parallel to the axis of the limiting post 12. The end of the rotating drum 8 near the fixing block 11 is an open end, through which the connecting block 14 passes. The upper end of the connecting block 14 is fixedly connected to the slide cylinder 13, and the lower end of the connecting block 14 is fixedly connected to the U-shaped block 15. Both the slide cylinder 13 and the threaded sleeve 18 are located outside the rotating drum 8.

[0034] In this embodiment, specifically, as follows: Figure 5 As shown, the lower end of the U-shaped block 15 has multiple ventilation holes 24, and multiple electric heating rods 25 are fixedly connected to the inner wall of the U-shaped block 15; the end of the U-shaped block 15 facing the support base 16 is open.

[0035] In this embodiment, specifically, as follows: Figure 6As shown, the feeding and conveying mechanism includes a second support block 26 disposed outside the first U-shaped plate 1, a conveying cylinder 27 fixedly connected to the upper end of the second support block 26, a feeding frame 31 that is fixedly connected to the upper end of the conveying cylinder 27 and communicates with the interior of the conveying cylinder 27, a third motor 28 fixedly connected to one end of the conveying cylinder 27, a rotating rod 29 fixedly connected to the output shaft of the third motor 28, an auger 30 fixedly connected to the outer peripheral wall of the rotating rod 29, and a discharge chute 32 that is opened through the lower end of the conveying cylinder 27; the rotating rod 29 is rotatably installed inside the conveying cylinder 27; the auger 30 is spirally arranged along the axial direction of the rotating rod 29; and the discharge chute 32 is located inside the rotating cylinder 8.

[0036] In this embodiment, specifically, there are two toothed rings 10. The two toothed rings 10 are axially spaced along the outer peripheral wall of the rotating cylinder 8 near the toothed cylinder 5, and both toothed rings 10 mesh with the toothed cylinder 5.

[0037] In this embodiment, specifically, the internal thread of the threaded sleeve 18 is adapted to the external thread of the lead screw 17; the axial direction of the lead screw 17 is parallel to the axial direction of the limiting post 12.

[0038] In this embodiment, specifically, multiple through holes 9 are evenly and equidistantly distributed along the circumference of the rotating cylinder 8; the rotating cylinder 8 is a cylindrical structure with an arc-shaped bottom surface on its inner wall, and the lower end surface of the U-shaped block 15 is an arc-shaped surface that matches the arc-shaped bottom surface of the inner wall of the rotating cylinder 8.

[0039] Working principle: When in use, the corn kernels to be dried are added into the feed frame 31. The third motor 28 drives the rotating rod 29 and the auger 30 to rotate. The auger 30 pushes the corn kernels along the conveying cylinder 27 to the discharge chute 32. The corn kernels fall into the rotating cylinder 8 through the discharge chute 32. The first motor 6 drives the toothed cylinder 5 to rotate. The toothed cylinder 5 drives the rotating cylinder 8 to rotate around its own axis through the meshing transmission of the toothed ring 10. The corn kernels in the rotating cylinder 8 tumble continuously under the action of the cylinder rotation. Axial flow fan 2 blows external air into the second U-shaped plate 21. The air flows through the air heating rod 23 and is heated to form hot air. The hot air is evenly blown to the outer peripheral wall of the rotating drum 8 through multiple equally spaced ventilation slots 22. The hot air enters the interior of the rotating drum 8 through multiple through holes 9 on the side wall of the rotating drum 8 and comes into full contact with the corn kernels in the tumbling process, so as to achieve uniform drying of the corn kernels. The second motor 20 drives the lead screw 17 to rotate. The threaded engagement between the lead screw 17 and the threaded sleeve 18 causes the U-shaped block 15 to reciprocate along the axis of the limiting post 12. The lower end face of the U-shaped block 15 pushes the corn kernels that are on the bottom surface of the inner wall of the rotating drum 8 away from the fixed block 11 from inside the rotating drum 8. At the same time, the electric heating rod 25 heats the air that enters the U-shaped block 15 through the ventilation hole 24. The heated air flows out from the open end of the U-shaped block 15 to assist in heating the corn kernels. After drying, the corn kernels are discharged from the end of the rotating drum 8.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A corn drying hot air uniform distribution device, characterized in that, It includes a first U-shaped plate (1), an air supply mechanism disposed on one side of the first U-shaped plate (1), a support and limiting mechanism disposed in the U-shaped internal space of the first U-shaped plate (1), a roller rotation mechanism disposed in the U-shaped internal space of the first U-shaped plate (1), a translation and heat scraping mechanism disposed in the U-shaped internal space of the first U-shaped plate (1), and a feeding and conveying mechanism disposed on the outside of the first U-shaped plate (1); The first U-shaped plate (1) has an inverted U-shaped structure; The air outlet of the air supply mechanism faces the internal space of the first U-shaped plate (1); The support and limiting mechanism is set in the U-shaped internal space of the first U-shaped plate (1), and the roller rotation mechanism is rotatably installed on the support and limiting mechanism; The drum rotation mechanism has an internal cavity for holding the corn kernels to be dried; The moving end of the translational heat scraping mechanism reciprocates along the length of the first U-shaped plate (1); The discharge end of the feeding conveyor extends into the interior of the drum rotating mechanism; A gap of 0.3mm to 0.8mm is left between the lower end face of the U-shaped block (15) of the translational scraping mechanism and the bottom surface of the inner wall of the roller rotation mechanism.

2. The corn drying hot air uniform distribution device according to claim 1, characterized in that, The air supply mechanism includes a second U-shaped plate (21) fixedly connected to the inner wall of one side of the first U-shaped plate (1), a plurality of ventilation slots (22) that penetrate through the second U-shaped plate (21) near the center of the first U-shaped plate (1), and a plurality of air heating rods (23) fixedly connected between the upper and lower end faces of the inner wall of the second U-shaped plate (21); the plurality of ventilation slots (22) are equidistantly distributed along the length of the second U-shaped plate (21); a plurality of axial flow fans (2) are fixedly connected through one side of the first U-shaped plate (1), and the air outlet of the axial flow fans (2) is set towards the second U-shaped plate (21).

3. The corn drying hot air uniform distribution device according to claim 1, characterized in that, The support limiting mechanism includes a first support block (3) fixedly connected to the bottom surface of the U-shaped internal space of the first U-shaped plate (1) and a first U-shaped frame (4) fixedly connected to the inner wall of the U-shaped internal space of the first U-shaped plate (1); the first support block (3) is located on the side of the U-shaped internal space of the first U-shaped plate (1) away from the air supply mechanism, and the first U-shaped frame (4) is located on the side of the U-shaped internal space of the first U-shaped plate (1) close to the air supply mechanism.

4. The corn drying hot air uniform distribution device according to claim 3, characterized in that, The drum rotation mechanism includes a gear cylinder (5) rotatably mounted on a first U-shaped frame (4), a first motor (6) fixedly connected to one end of the shaft of the gear cylinder (5), a second U-shaped frame (7) fixedly connected to the inner wall of the U-shaped space of the first U-shaped plate (1), a rotating drum (8) rotatably mounted on the second U-shaped frame (7), and a gear ring (10) fixedly connected to the outer peripheral wall of the rotating drum (8); the gear ring (10) meshes with the gear cylinder (5); the side wall of the rotating drum (8) is provided with multiple through holes (9); the output shaft of the first motor (6) is fixedly connected to the shaft of the gear cylinder (5); the axis of the gear cylinder (5) and the axis of the rotating drum (8) are parallel to each other.

5. The corn drying hot air uniform distribution device according to claim 1, characterized in that, The translational scraping mechanism includes two fixed blocks (11), a limiting post (12) fixedly connected to one end of the two fixed blocks (11) close to each other, a slide cylinder (13) sleeved on the outer peripheral wall of the limiting post (12), a connecting block (14) fixedly connected to the lower end of the slide cylinder (13), a U-shaped block (15) fixedly connected to the lower end of the connecting block (14), two support seats (16) fixedly connected to the bottom surface of the U-shaped internal space of the first U-shaped plate (1), a lead screw (17) rotatably installed between the two support seats (16), and a threaded rod threaded on the outer peripheral wall of the lead screw (17). The sleeve (18), the bearing block (19) fixedly connected to the side wall of the first U-shaped plate (1), and the second motor (20) fixedly connected to the upper end of the bearing block (19); two fixing blocks (11) are located in the U-shaped internal space of the first U-shaped plate (1); the threaded sleeve (18) is fixedly connected to one end of the U-shaped block (15); the output shaft of the second motor (20) is fixedly connected to one end of the lead screw (17); the slide cylinder (13) is slidably arranged along the axial direction of the limiting post (12); the axis of the lead screw (17) and the axis of the limiting post (12) are parallel to each other.

6. A corn drying hot air uniform distribution device according to claim 5, characterized in that, The lower end of the U-shaped block (15) has multiple ventilation holes (24), and the inner wall of the U-shaped block (15) is fixedly connected with multiple electric heating rods (25); the end of the U-shaped block (15) facing the support base (16) is open.

7. The corn drying hot air uniform distribution device according to claim 1, characterized in that, The feeding and conveying mechanism includes a second support block (26) disposed outside the first U-shaped plate (1), a conveying cylinder (27) fixedly connected to the upper end of the second support block (26), a feeding frame (31) fixedly connected to the upper end of the conveying cylinder (27) and communicating with the inside of the conveying cylinder (27), a third motor (28) fixedly connected to one end of the conveying cylinder (27), a rotating rod (29) fixedly connected to the output shaft of the third motor (28), an auger (30) fixedly connected to the outer peripheral wall of the rotating rod (29), and a discharge chute (32) opened through the lower end of the conveying cylinder (27); the rotating rod (29) is rotatably installed inside the conveying cylinder (27); the auger (30) is spirally arranged along the axial direction of the rotating rod (29); and the discharge chute (32) is located inside the rotating cylinder (8).

8. The corn drying even distribution device of claim 4, wherein, There are two toothed rings (10). The two toothed rings (10) are axially spaced along the outer peripheral wall of the rotating cylinder (8) near the toothed cylinder (5). Both toothed rings (10) mesh with the toothed cylinder (5).

9. The corn drying even distribution device of claim 5, wherein, The internal thread of the threaded sleeve (18) is compatible with the external thread of the lead screw (17); the axial direction of the lead screw (17) is parallel to the axial direction of the limiting post (12).

10. A corn drying hot air uniform distribution device according to claim 4, characterized in that, Multiple through holes (9) are evenly and equidistantly distributed along the circumference of the rotating cylinder (8); the rotating cylinder (8) is a cylindrical structure with a circular arc surface on the bottom of its inner wall, and the lower end of the U-shaped block (15) is an arc surface that matches the circular arc surface on the bottom of the inner wall of the rotating cylinder (8).

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