A circulating corn dryer

Abstract

This invention discloses a circulating corn dryer, belonging to the field of agricultural equipment technology. The circulating corn dryer includes a shell assembly, which includes a shell. The top of the shell has a feed inlet, and one side of the bottom of the shell has a discharge outlet. Several electric heating tubes are rotatably arranged inside the shell. A heat-conducting cylinder is arranged outside the electric heating tubes. An agitation assembly is arranged above the heat-conducting cylinder, and a horizontal plate is arranged below the heat-conducting cylinder. A vertical plate connected to the horizontal plate is arranged on one side of the heat-conducting cylinder. A conveying assembly is movably arranged between the horizontal plate and the heat-conducting cylinder. A secondary drying assembly is arranged between the horizontal plate and the vertical plate. The secondary drying assembly achieves uniform drying of the corn. The conveying assembly and the secondary drying assembly achieve efficient drying of the corn, realizing comprehensive drying treatment of the corn. It has the advantages of reciprocating agitation, uniform drying, individual conveying, comprehensive and efficient drying, and simplicity and practicality.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, specifically to a circulating corn dryer. Background Technology

[0002] Corn is one of the most widely cultivated grains globally, primarily categorized into sweet corn, waxy corn, and regular corn. It's a staple food in many countries and is also used to make various foods and beverages, such as popcorn, corn chips, and corn oil. Corn is highly nutritious, containing abundant protein, dietary fiber, vitamins, and minerals. It also contains an antioxidant called glutathione, which helps the body fight disease. In terms of cultivation, corn typically requires ample sunlight, water, and fertile soil. It can grow in a variety of climatic conditions, making it an important part of agriculture in many countries.

[0003] During the corn harvest and post-harvest processing, corn often needs to be dried. Most existing corn drying methods involve spreading the corn flat on the ground and letting it air dry naturally to remove moisture. While this method can dry the corn, it is inefficient, only drying the upper surface of the corn, resulting in uneven drying. Furthermore, it is overly dependent on the weather, making it difficult to dry the corn in humid conditions, which affects subsequent processing.

[0004] Therefore, there is a need to provide a circulating corn dryer designed to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a circulating corn dryer to solve the problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A circulating corn dryer includes a shell assembly. The shell assembly includes a shell, with a feed inlet at the top and a discharge outlet on one side of the bottom. Several heating tubes are rotatably arranged inside the shell. A heat-conducting cylinder is located outside each heating tube. An agitator is positioned above the heat-conducting cylinder. A horizontal plate is located below the heat-conducting cylinder. A vertical plate connected to the horizontal plate is located on one side of the heat-conducting cylinder. A conveying assembly is movably arranged between the horizontal plate and the heat-conducting cylinder. A secondary drying assembly is located between the horizontal plate and the vertical plate. The agitator includes symmetrically arranged grooves on the inner wall of the shell. Sliding plates slide on the grooves, with one end of each sliding plate connected to a connecting rod. A plurality of second rotating rods are rotatably connected. One end of each second rotating rod is provided with a transmission gear, which meshes with a fixed rack on the inner wall of the outer casing. A plurality of supports are distributed circumferentially at both ends of the second rotating rods, and a plurality of support rods are connected between corresponding two supports. A first rotating rod is rotatably provided inside the outer casing. The first rotating rod is connected to an agitator motor. A rotating cylinder is provided on the first rotating rod. The rotating cylinder is provided with an oblique annular groove. A sliding frame that slides and engages with the inner wall of the outer casing is movably fitted on the outer side of the rotating cylinder. A fixed post that slides and engages with the oblique annular groove is provided inside the sliding frame. A fixed plate is provided on the connecting rod. A hinge plate is movably connected between the sliding frame and the fixed plate.

[0008] As a further aspect of the present invention, the feeding assembly includes:

[0009] A collection box is slidably mounted on a horizontal plate. The top of the collection box has an opening. The collection box corresponds to the bottom heat-conducting cylinder. A first through groove is provided at one end of the bottom of the collection box.

[0010] A sliding rack, which is slidably mounted on a horizontal plate and connected to a collection box;

[0011] The third rotating rod is rotatably mounted inside the housing and connected to the material conveying motor. The third rotating rod is provided with a residual gear that meshes with the sliding rack.

[0012] Telescopic rod, which connects the inner wall of the outer casing and the collection box;

[0013] A spring, which is connected between the inner wall of the housing and the telescopic rod;

[0014] The second through slot is provided on the horizontal plate and located at the end of the horizontal plate away from the residual gear.

[0015] As a further aspect of the present invention, the secondary drying component includes:

[0016] The mounting plate is located on the side of the horizontal plate away from the heating element, and the side of the mounting plate near the second through groove is provided with several material support plates.

[0017] A movable plate, wherein a plurality of movable plates are provided and movably disposed on the side of the material support plate away from the second through groove, the movable plate is located between two adjacent material support plates, and a plurality of push rods are provided on the movable plate;

[0018] A heating plate, wherein several heating plates are provided and distributed on one side of the horizontal plate near the material support plate;

[0019] An intermittent feeding module is connected between the moving plate and the telescopic rod;

[0020] An output module is disposed between the upright plate and the discharge port and corresponds to the end of the support plate away from the mounting plate.

[0021] As a further embodiment of the present invention, the intermittent feeding module includes:

[0022] Side annular grooves are symmetrically arranged on the inner wall of the outer shell, and the side annular grooves are configured as annular grooves with a horizontal sliding groove at the top.

[0023] A crossbar, which is connected between several movable plates, and the two ends of the crossbar are respectively slidably engaged with the corresponding side ring grooves;

[0024] The gear part is rotatably mounted on the inner wall of the outer casing, and the outer end of the gear part is connected to a rotating groove plate that slides with the crossbar;

[0025] A sliding toothed plate, which is slidably disposed at the bottom of the housing and meshes with the gear section;

[0026] The third through groove is provided on the horizontal plate, and a vertical rod connected between the telescopic rod and the sliding toothed plate is slidably provided in the third through groove.

[0027] As a further aspect of the present invention, the output module includes:

[0028] A rotating wheel is symmetrically arranged on the side of the vertical plate away from the heat-conducting cylinder. A conveyor belt is connected between the rotating wheels, and several movable plates are distributed on the conveyor belt. The rotating wheel is connected to the return material motor.

[0029] The return hole is located at one end of the vertical plate near the feed inlet.

[0030] As a further embodiment of the present invention, a first transmission module is provided between the heating element on one side and the first rotating rod.

[0031] As a further embodiment of the present invention, a second transmission module is provided between the heating element on one side and the third rotating rod.

[0032] As a further embodiment of the present invention, the plurality of heating tubes are V-shaped and disposed inside the outer shell, the distance between the two heat-conducting cylinders is smaller than the diameter of the corn, and the ends of the two heating tubes that are close to each other are provided with a spacing that allows the corn to pass through.

[0033] As a further embodiment of the present invention, the material receiving plate is provided with a plurality of V-shaped material receiving grooves.

[0034] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art:

[0035] This invention utilizes an electric heating element to generate heat, which is absorbed by a heat-conducting cylinder to dry the corn on it. A stirring motor drives a first rotating rod to rotate, which in turn drives a rotating cylinder to rotate synchronously. The rotating cylinder, through a sliding engagement between a slanted annular groove and a fixed column, and a sliding engagement between a sliding frame and the inner wall of the outer shell, causes the sliding frame to reciprocate along the axial direction of the first rotating rod. The sliding frame, through a movable engagement between a hinged plate and a fixed plate, and a sliding engagement between a sliding plate and a chute, causes the fixed plate to reciprocate along the length of the chute. The fixed plate, via a connecting rod, drives the sliding plate to move synchronously. The sliding plate then drives a second rotating rod to move. The second rotating rod, through a transmission... The moving gear meshes with the fixed rack, driving several supports to reciprocate and rotate. The supports agitate the corn by driving the support rods to rotate synchronously. The support rods achieve uniform drying of the corn by increasing the contact area between the corn and heat. Through the conveying component and the secondary drying component, individual corn can be conveyed and returned separately, extending the drying time inside the corn shell. This allows for efficient drying of the corn, preventing any corn from being missed, and achieving comprehensive drying of the corn. It features reciprocating agitation, uniform drying, individual conveying, comprehensive and efficient drying, and is simple and practical.

[0036] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0037] Figure 1 This is an external view of an embodiment of the invention.

[0038] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the invention.

[0039] Figure 3 for Figure 2 Front view of the secondary drying unit.

[0040] Figure 4 This is a schematic diagram of the agitation component in an embodiment of the invention.

[0041] Figure 5 This is a schematic diagram of the material feeding assembly in an embodiment of the invention.

[0042] Figure 6This is a schematic diagram of the secondary drying component in an embodiment of the invention.

[0043] Figure 7 This is a schematic diagram of the material support plate in an embodiment of the invention.

[0044] Reference numerals: 1-Outer shell assembly, 101-Outer shell, 102-Inlet, 103-Outlet, 2-Agitating assembly, 201-Sliding frame, 202-Fixed column, 203-Rotating cylinder, 2031-Inclined ring groove, 204-First rotating rod, 205-Hinge plate, 206-Fixed plate, 207-Connecting rod, 208-Slide plate, 209-Second rotating rod, 210-Transmission gear, 211-Fixed rack, 212-Bracket, 213-Support rod, 214-Sliding groove, 215-Heating tube, 216-Heat conduction cylinder, 217-Agitating motor, 3-Feeding assembly, 301-Collection box, 3011-First through groove, 302-Extension 303-Spring, 304-Horizontal plate, 3041-Second through groove, 3042-Third through groove, 305-Sliding rack, 306-Residual gear, 307-Third rotating rod, 4-Secondary drying assembly, 401-Upright rod, 402-Sliding toothed plate, 403-Mounting plate, 404-Material receiving plate, 4041-Material receiving groove, 405-Moving plate, 406-Gear section, 407-Rotating groove plate, 408-Push rod, 409-Horizontal bar, 410-Side ring groove, 411-Rotating wheel, 412-Conveyor belt, 413-Moving plate, 414-Upright plate, 415-Return hole, 416-Return motor, 417-Heating plate. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0046] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0047] In one embodiment of the present invention, see Figure 1 , Figure 2 , Figure 3 and Figure 4The circulating corn dryer includes a shell assembly 1, which includes a shell 101. The top of the shell 101 has a feed inlet 102, and one side of the bottom of the shell 101 has a discharge outlet 103. Several electric heating tubes 215 are rotatably arranged inside the shell 101. A heat-conducting cylinder 216 is arranged outside each heating tube 215. An agitation assembly 2 is arranged above the heat-conducting cylinder 216. A horizontal plate 304 is arranged below the heat-conducting cylinder 216. A vertical plate 414 connected to the horizontal plate 304 is arranged on one side of the heat-conducting cylinder 216. A conveying assembly 3 is movably arranged between the horizontal plate 304 and the heat-conducting cylinder 216. A secondary drying assembly 4 is arranged between the horizontal plate 304 and the vertical plate 414. The agitation assembly 2 includes symmetrically arranged grooves 214 on the inner wall of the shell 101. Slide plates 208 slide on the grooves 214. One end of each slide plate 208 is connected to a connecting rod 207. The slide plates 208 are rotatably connected. A plurality of second rotating rods 209 are connected. One end of each second rotating rod 209 is provided with a transmission gear 210, which meshes with a fixed rack 211 set on the inner wall of the outer casing 101. A plurality of supports 212 are distributed circumferentially at both ends of the second rotating rods 209, and a plurality of support rods 213 are connected between corresponding two supports 212. A first rotating rod 204 is rotatably provided inside the outer casing 101. The first rotating rod 204 is connected to an agitator motor (not shown in the figure). A rotating cylinder 203 is provided on the first rotating rod 204. The rotating cylinder 203 is provided with an oblique ring groove 2031. A sliding frame 201 that slides and engages with the inner wall of the outer casing 101 is movably sleeved on the outside of the rotating cylinder 203. A fixed post 202 that slides and engages with the oblique ring groove 2031 is provided inside the sliding frame 201. A fixed plate 206 is provided on the connecting rod 207. A hinge plate 205 is movably connected between the sliding frame 201 and the fixed plate 206.

[0048] In this embodiment, the heating element 215 is energized and generates heat, which is absorbed by the heat-conducting cylinder 216 to dry the corn on it. The stirring motor drives the first rotating rod 204 to rotate, which in turn drives the rotating cylinder 203 to rotate synchronously. The rotating cylinder 203 drives the sliding frame 101 to reciprocate along the axial direction of the first rotating rod 204 through the sliding engagement of the inclined ring groove 2031 and the fixed column 202, and the sliding engagement of the sliding frame 201 with the inner wall of the outer shell 101. The sliding frame 201 drives the fixed column 206 to move back and forth through the movable engagement of the hinge plate 205 and the fixed plate 206, and the sliding engagement of the slide plate 208 with the slide groove 214. The fixed plate 206 reciprocates along the length of the chute 214. The fixed plate 206 drives the sliding plate 208 to move synchronously via the connecting rod 207. The sliding plate 208 drives the second rotating rod 209 to move. The second rotating rod 209 drives several supports 212 to reciprocate and rotate via the meshing of the transmission gear 210 and the fixed rack 211. The supports 212 agitate the corn by driving the support rods 213 to rotate synchronously. The support rods achieve uniform drying of the corn by increasing the contact area between the corn and heat. Through the conveying assembly 3 and the secondary drying assembly 4, individual corn kernels can be individually conveyed and returned. This method extends the drying time of corn inside the outer shell 101, enabling efficient drying and preventing any corn from being missed, thus achieving comprehensive drying. It features reciprocating stirring, uniform drying, individual feeding, comprehensive and efficient drying, and ease of use. The inlet 102 allows for batch feeding of corn, while the outlet 103 allows for the removal of dried corn. A first transmission module is provided between the heating element 215 on one side and the first rotating rod 204. This first transmission module can be a transmission wheel and belt or a gear and chain, facilitating the operation of the first rotating rod 204. 04 rotates, and at the same time, the first rotating rod 204 drives the electric heating tube 215 on one side to rotate through the first transmission module, which can drive the corn on the heat-conducting cylinder 216 on one side to rotate, which facilitates the circumferential drying of the corn and avoids scorching the corn. At the same time, it reduces energy consumption. Several electric heating tubes 215 are V-shaped and set inside the outer shell 101. The distance between the heat-conducting cylinders 216 on both sides is smaller than the diameter of the corn. The ends of the electric heating tubes 215 on both sides that are close to each other are provided with a gap that allows the corn to pass through, which facilitates the rotation of the corn and prevents the corn from passing through the space between two adjacent heat-conducting cylinders 216 on one side.

[0049] In one embodiment of the present invention, see Figure 1 , Figure 2 and Figure 5The material conveying assembly 3 includes a collection box 301, which is slidably mounted on a horizontal plate 304. The collection box 301 has an opening at its top and corresponds to the lowermost heat-conducting cylinder 216. A first through groove 3011 is provided at one end of the bottom of the collection box 301. A sliding rack 305 is slidably mounted on the horizontal plate 304 and connected to the collection box 301. A third rotating rod 307 is rotatably mounted on the outer casing 101. It is connected to the conveying motor (not shown in the figure). The third rotating rod 307 is provided with a residual gear 306 that meshes with the sliding rack 305; a telescopic rod 302, which is connected between the inner wall of the outer shell 101 and the collection box 301; a spring 303, which is connected between the inner wall of the outer shell 101 and the telescopic rod 302; and a second through groove 3041, which is provided on the horizontal plate 304 and located at the end of the horizontal plate 304 away from the residual gear 306.

[0050] In this embodiment, under the action of the stirring component 2 and the rotating heat-conducting cylinder 216, the corn enters the collection box 301 through the bottom end of the V-shaped heat-conducting cylinder 216. The conveying motor drives the residual gear 306 to rotate by driving the third rotating rod 307 to rotate. The residual gear 306 drives the collection box 301 to reciprocate on the horizontal plate 304 by meshing with the sliding rack 305 and elastically cooperating with the telescopic rod 302 and the spring 303. Initially, the first through groove 3011 is away from the second through groove 3041. As the collection box 301 moves away from the residual gear 306, the first through groove 3011 moves closer to the second through groove 3041. When the first through groove 3011 and the second through groove 3041 are aligned, the corn in the collection box 301 will pass through the first through groove 3011 and the second through groove 3041 in sequence and move to the secondary drying component 4. When the collection box 301 continues to move away from the residual gear 306, the first through groove 3011 moves closer to the second through groove 3041. The first through slot 3011 is offset from the second through slot 3041, preventing corn from passing through the horizontal plate 304. As the collecting box 301 approaches the residual gear 306, the first through slot 3011 approaches the second through slot 3041. When the first through slot 3011 and the second through slot 3041 are aligned again, the corn in the collecting box 301 will pass through the first through slot 3011 and the second through slot 3041 in sequence and move to the secondary drying component 4, realizing the re-feeding of corn and facilitating the efficient drying of individual corn. A second transmission module is provided between the electric heating tube 215 on one side and the third rotating rod 307. The second transmission module can be a combination of a transmission wheel and a transmission belt or a gear and a transmission chain. The rotating third rotating rod 307 simultaneously drives the electric heating tube 215 on one side to rotate, which can drive the corn on the heat-conducting cylinder 216 on one side to rotate, facilitating the circumferential drying of the corn, avoiding scorching of the corn, and reducing energy consumption.

[0051] In one embodiment of the present invention, see Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 The secondary drying assembly 4 includes a mounting plate 403, which is disposed on the side of the horizontal plate 304 away from the heating tube 215. Several material support plates 404 are provided on the side of the mounting plate 403 near the second through groove 3041. A movable plate 405 is provided, which is movably disposed on the side of the material support plates 404 away from the second through groove 3041. The movable plate 405 is located between two adjacent material support plates 404 and has several push rods 408. Several heating plates 417 are provided and distributed on the side of the horizontal plate 304 near the material support plates 404. An intermittent pushing module is connected between the movable plate 405 and the telescopic rod 302. An output module is disposed between the vertical plate 414 and the discharge port 103 and corresponds to the end of the material support plate 404 away from the mounting plate 403.

[0052] The intermittent feeding module includes a side annular groove 410, which is symmetrically arranged on the inner wall of the outer shell 101, and is an annular groove with a horizontal sliding groove at the top; a crossbar 409, which is connected between several moving plates 405, and the two ends of the crossbar 409 are respectively slidably engaged with the corresponding side annular groove 410; a gear part 406, which is rotatably arranged on the inner wall of the outer shell 101, and the outer end of the gear part 406 is connected to a rotating groove plate 407 that slidably engages with the crossbar 409; a sliding toothed plate 402, which is slidably arranged at the bottom of the outer shell 101 and meshes with the gear part 406; and a third through groove 3042, which is arranged on the cross plate 304, and a vertical rod 401 connected between the telescopic rod 302 and the sliding toothed plate 402 is slidably arranged in the third through groove 3042.

[0053] The output module includes a rotating wheel 411, which is symmetrically arranged on the side of the upright plate 414 away from the heat-conducting cylinder 216. A conveyor belt 412 is connected between the rotating wheels 411, and several movable plates 413 are distributed on the conveyor belt 412. The rotating wheel 411 is connected to the return motor 416. A return hole 415 is provided at the end of the upright plate 414 near the feed port 102.

[0054] In this embodiment, the receiving plate 404 is provided with several V-shaped receiving grooves 4041. The corn passing through the horizontal plate 304 will fall onto the receiving plate 404 and be located in the receiving groove 4041 between two adjacent push rods 408. When the heating plate 417 is energized, the corn on the receiving plate 404 can be efficiently dried. Through the conveying assembly 3, the telescopic rod 302 can be reciprocated. In the initial state, the horizontal rod 409 is located at the top of the side ring groove 410 near the mounting plate 403. 02 The sliding toothed plate 402 is driven to slide back and forth by the upright rod 401. As the collection box 301 moves away from the residual gear 306, the sliding toothed plate 402 drives the rotating groove plate 407 to swing clockwise by meshing with the gear part 406. The rotating groove plate 407 drives the crossbar 409 to slide to the right along the top of the side ring groove 410 by sliding engagement with the crossbar 409. The crossbar 409 drives several push rods 408 to move synchronously through the moving plate 405. The push rods 408 will be located in the receiving groove 404. The corn is pushed into the adjacent receiving trough 4041 on the right. As the collecting box 301 approaches the residual gear 306, the sliding toothed plate 402 drives the rotating trough plate 407 to swing counterclockwise by meshing with the gear part 406. The rotating trough plate 407 drives the crossbar 409 to slide clockwise along the bottom of the side ring groove 410 by sliding with the crossbar 409. Under the gravity of the moving plate 405 and the push rod 408, the crossbar 409 moves down, so that the top of the push rod 408 is located in the receiving trough. Below 4041, when the crossbar 409 returns to the top of the side ring groove 410 and is close to one end of the mounting plate 403, the top of the push rod 408 is located above the support plate 404, which facilitates the pushing of the corn. The depth of the side ring groove 410 decreases clockwise spirally, and the depth of the top of the side ring groove 410 and the end close to the mounting plate 403 is greater than the depth below the side ring groove 410. The two ends of the crossbar 410 are elastically engaged with the side ring groove 410, which facilitates the crossbar 409 to slide clockwise along the direction of the side ring groove 410.

[0055] Meanwhile, during the corn drying process, when the corn moves to the end of the receiving plate 404 away from the mounting plate 403, the return motor 416 drives the rotating wheel 411 to rotate clockwise. The rotating wheel 411 drives several movable plates 413 to rotate clockwise synchronously through the conveyor belt 412. This can lift the corn away from the mounting plate 403 and return it to the top of the heat-conducting cylinder 216 through the return hole 415, facilitating circulating drying. This can improve the drying degree of the corn and avoid residual moisture in the corn, which would affect subsequent processing. During the corn discharge process, the return motor 416 drives the rotating wheel 411 to rotate counterclockwise. The rotating wheel 411 drives several movable plates 413 to rotate clockwise synchronously through the conveyor belt 412. This can push the corn away from the mounting plate 403 to the bottom of the inner side of the outer shell 101 and discharge it through the discharge port 103, thus realizing the discharge of the dried corn.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A circulating corn dryer, comprising a shell assembly, the shell assembly including a shell, a feed inlet at the top of the shell, and a discharge outlet on one side of the bottom of the shell, characterized in that, The outer shell contains several rotatable heating tubes, each with a heat-conducting cylinder on its outer side. An agitator is positioned above the heat-conducting cylinder, and a horizontal plate is located below it. A vertical plate connected to the horizontal plate is located on one side of the heat-conducting cylinder. A material conveying assembly is movably connected between the horizontal plate and the heat-conducting cylinder. A secondary drying assembly is located between the horizontal plate and the vertical plate. The agitator includes symmetrically arranged grooves on the inner wall of the outer shell, with sliding plates slidably mounted on the grooves. One end of each sliding plate is connected to a connecting rod. Several second rotating rods are rotatably connected between the sliding plates. One end of each second rotating rod has a transmission gear that meshes with a fixed rack on the inner wall of the outer shell. Several supports are circumferentially distributed at both ends of the second rotating rods, with several support rods connecting corresponding pairs of supports. A first rotating rod is rotatably mounted inside the outer shell and connected to an agitator motor. A rotating cylinder is mounted on the first rotating rod, and the rotating cylinder has an inclined annular groove. A material conveying assembly is movably fitted onto the outer side of the rotating cylinder, connecting to the inner wall of the outer shell. A sliding frame with wall sliding fit is provided. The sliding frame has a fixed column that slides with the inclined ring groove inside. A fixed plate is provided on the connecting rod. A hinge plate is movably connected between the sliding frame and the fixed plate. The electric heating tube is energized and generates heat. The heat-conducting cylinder absorbs heat and dries the corn on it. The stirring motor drives the first rotating rod to rotate. The first rotating rod drives the rotating cylinder to rotate synchronously. The rotating cylinder drives the sliding frame to move back and forth along the axial direction of the first rotating rod through the sliding fit between the inclined ring groove and the fixed column and the sliding fit between the sliding frame and the inner wall of the outer shell. The sliding frame drives the fixed plate to move back and forth along the length direction of the sliding groove through the movable fit between the hinge plate and the fixed plate and the sliding fit between the sliding plate and the sliding groove. The fixed plate drives the sliding plate to move synchronously through the connecting rod. The sliding plate drives the second rotating rod to move. The second rotating rod drives several brackets and support rods to move back and forth and rotate through the meshing of the transmission gear and the fixed rack. The brackets stir the corn by driving the support rods to rotate synchronously. The support rods achieve uniform drying of the corn by increasing the contact area between the corn and the heat. The material conveying assembly includes: A collection box is slidably mounted on a horizontal plate. The top of the collection box has an opening. The collection box corresponds to the bottom heat-conducting cylinder. A first through groove is provided at one end of the bottom of the collection box. A sliding rack, which is slidably mounted on a horizontal plate and connected to a collection box; The third rotating rod is rotatably mounted inside the housing and connected to the material conveying motor. The third rotating rod is provided with a residual gear that meshes with the sliding rack. Telescopic rod, which connects the inner wall of the outer casing and the collection box; A spring, which is connected between the inner wall of the housing and the telescopic rod; The second through slot is provided on the horizontal plate and located at the end of the horizontal plate away from the residual gear; The secondary drying component includes: The mounting plate is located on the side of the horizontal plate away from the heating element, and the side of the mounting plate near the second through groove is provided with several material support plates. A movable plate, wherein a plurality of movable plates are provided and movably disposed on the side of the material support plate away from the second through groove, the movable plate is located between two adjacent material support plates, and the movable plate is provided with a plurality of push rods; A heating plate, wherein several heating plates are provided and distributed on one side of the horizontal plate near the material support plate; An intermittent feeding module is connected between the movable plate and the telescopic rod; An output module is disposed between the vertical plate and the discharge port and corresponds to the end of the support plate away from the mounting plate; The intermittent feeding module includes: Side annular grooves are symmetrically arranged on the inner wall of the outer shell, and the side annular grooves are configured as annular grooves with a horizontal sliding groove at the top. A crossbar, which is connected between several movable plates, and whose two ends are respectively slidably engaged with corresponding side annular grooves; The gear part is rotatably mounted on the inner wall of the outer casing, and the outer end of the gear part is connected to a rotating groove plate that slides with the crossbar; A sliding toothed plate, which is slidably disposed at the bottom of the housing and meshes with the gear section; The third through groove is provided on the horizontal plate, and a vertical rod connected between the telescopic rod and the sliding toothed plate is slidably provided in the third through groove; The output module includes: A rotating wheel is symmetrically arranged on the side of the vertical plate away from the heat-conducting cylinder. A conveyor belt is connected between the rotating wheels, and several movable plates are distributed on the conveyor belt. The rotating wheel is connected to the return material motor. A return hole is provided at one end of the vertical plate near the feed inlet; Several of the heating tubes are V-shaped and disposed inside the outer casing. The distance between the two heat-conducting cylinders is smaller than the diameter of the corn. The ends of the two heating tubes that are close to each other are provided with a gap that allows the corn to pass through.

2. The circulating corn dryer according to claim 1, characterized in that, A first transmission module is provided between the heating element on one side and the first rotating rod.

3. The circulating corn dryer according to claim 1, characterized in that, A second transmission module is provided between the heating element on one side and the third rotating rod.

4. The circulating corn dryer according to claim 1, characterized in that, The material receiving plate is provided with several V-shaped material receiving grooves.

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