Energy-saving and high-efficiency small corn kernel drying machine

Abstract

This invention relates to the field of corn kernel drying technology, and more particularly to an energy-efficient and high-performance small corn kernel dryer. It includes a heat source generator, a hot air transmission pipe connected to the rear of the heat source generator, a drying trough fixedly connected to the end of the hot air transmission pipe away from the heat source generator, a protective cover slidably connected to the top of the drying trough, and a waste discharge pipe located in the center of the top of the protective cover. The dryer also includes a material basket, disposed inside the drying trough, for storing and stacking corn kernels, and a rotating drum rotatably disposed inside the material basket. The core of this invention lies in its ability to automatically adjust the extension amplitude of the stirring component according to the kernel stacking height, achieving dynamic matching between the stirring intensity and the material quantity. This ensures uniform heating while effectively avoiding mechanical damage. Combined with the retractable cloth bag structure at the four corners of the bottom that periodically pushes the stacked material, it solves the problem of uneven drying caused by long-term material retention in corners, thereby improving the overall drying quality.

Description

Technical Field

[0001] This invention relates to the field of corn kernel drying technology, and in particular to an energy-saving and efficient small corn kernel dryer. Background Technology

[0002] Corn kernels are the fruit of the corn plant (botanically called "caryopsis"), commonly known as "corn kernels." They are the main edible part of corn and a major harvest in agricultural production. At harvest, corn kernels typically have a high moisture content (generally 25%-35% or even higher). This high moisture content is extremely unstable and dangerous, and must be dried to a safe moisture level. High moisture and suitable temperatures create a breeding ground for molds, bacteria, and other microorganisms. Corn is highly susceptible to the growth of Aspergillus flavus and other microorganisms, producing highly toxic aflatoxins. Moldy corn not only completely loses its edible and feed value, but the toxins it produces are heat-resistant and difficult to remove, posing a threat to human and animal health (causing cancer and birth defects) through the food chain, resulting in huge economic losses.

[0003] During the corn kernel drying process, a few kernels often fall to the ground and cannot enter the equipment according to the process route. The main drying equipment is relatively large and consumes a lot of energy when starting up. Generally, the fallen kernels are temporarily stored and dried together after a certain number are collected. During this process, the kernels often become moldy, which is not conducive to drying efficiency. Similarly, for small batches of materials, long-term piling will cause mold accumulation, and sending small batches of materials into a large drying chamber separately will increase drying costs and cause energy waste.

[0004] Therefore, how to provide an energy-efficient and high-performance small-scale corn kernel dryer is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-efficient and high-performance small-scale corn kernel dryer to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an energy-saving and efficient small corn kernel dryer, comprising a heat source generator, a hot air transmission pipe connected to the rear side of the heat source generator, a drying trough fixedly connected to the end of the hot air transmission pipe away from the heat source generator, a protective cover slidably connected to the top of the drying trough, and a waste discharge pipe provided in the middle of the top of the protective cover, and further comprising: Material baskets, located inside the drying trough, are used for storing and stacking corn kernels; The rotating drum is rotatably installed inside the material basket. Inside the rotating drum is a stirring component that can extend and retract outwards. Through holes are opened on both sides of the stirring component, allowing the stirring component to move inside the rotating drum. When the height of the piled corn kernels is high, the stirring component is controlled to extend outwards inside the rotating drum, increasing the contact area between the stirring component and the corn kernels. When the height of the piled corn kernels is low, the stirring component is controlled to move inwards outside the rotating drum, reducing the contact area between the stirring component and the corn kernels, thus avoiding excessive agitation of the corn kernels and breakage. A positioning disk is fixedly connected to the rear side of the rotating cylinder. A drive source is installed inside the positioning disk to drive the agitation component to move inside the rotating cylinder. A rotary drive device is located on the front of the drying tank and is used to drive the rotating drum to rotate inside the material basket. The cloth bag is located at the four corners of the bottom of the material basket. The cloth bag has a telescopic component on the side away from the material basket, which is used to drive the cloth bag to move at the four corners of the bottom of the material basket, pushing the corn kernels piled up at the four corners of the bottom of the material basket toward the center of the material basket. The cloth bag is used to replace the four corners of the bottom of the material basket, so that the four corners of the bottom of the material basket are set as a deformable structure.

[0007] Furthermore, it also includes an adjustment assembly, which consists of a rotating cylinder, a positioning disc, an electric telescopic rod, a sliding guide groove, and a stirring assembly; The rotating cylinder is fixedly connected to the rear side of the rotating drive device, the positioning plate is fixedly connected to the back of the rotating cylinder, the electric telescopic rod is fixedly connected to the inner wall of the front of the positioning plate, the sliding guide groove is fixedly connected to the inner wall of the front of the rotating cylinder, and the stirring component is disposed inside the rotating cylinder.

[0008] Furthermore, the agitation assembly consists of a connecting plate, a movable seat, a first spring, an agitation plate, a fixing bar, and a second spring; The fixing bar is fixedly connected to the middle of the rotating cylinder, the spring is fixedly connected to the outside of the fixing bar, the connecting plate is fixedly connected to the end of the second spring away from the fixing bar, the movable seat is fixedly connected to the top of the connecting plate, the first spring is fixedly connected to the top of the movable seat, and the stirring plate is slidably connected to the outside of the top of the movable seat.

[0009] Furthermore, it also includes an anti-stacking component, which consists of a fixed plate, an electric telescopic rod, a connecting block, and a cloth bag; The cloth bag is fixedly connected to the four corners of the bottom of the material basket. The connecting block is fixedly connected to the bottom of the cloth bag on the side away from the material basket. The fixing plate is fixedly connected to the inside of the drying tank. The electric telescopic rod II is fixedly connected to the side of the fixing plate away from the inner wall of the drying tank. The telescopic end of the electric telescopic rod II is fixedly connected to the connecting block.

[0010] Furthermore, it also includes a waste heat recovery component, which consists of a filter cartridge and a return pipe; The filter cartridge is fixedly connected to the top of the protective cover and located outside the waste discharge pipe, while the return pipe is fixedly connected to the middle of the back of the filter cartridge.

[0011] Furthermore, the surface of the material basket is provided with multiple holes, with an opening rate of 25%-35%.

[0012] Furthermore, a heat sensor is installed at the interface between the hot air transmission pipe and the drying tank, and a fan is installed at the interface between the hot air transmission pipe and the heat source generator. The fan is a centrifugal fan with an air volume range of 2000-5000 m³ / h and an air pressure range of 800-1500 Pa. It is frequency adjustable. A heat sensor is installed at the bottom of the material basket inside the drying tank, and a heat sensor is installed at the bottom of the waste discharge pipe. These are used to monitor the inlet air temperature, working temperature, and outlet air temperature inside the drying tank in real time. An electric air valve is installed inside the hot air transmission pipe, and the electric air valve is linked to the fan for control.

[0013] Furthermore, the filter cartridge is provided with a filter material, and a sealing cap is threaded to the top of the filter cartridge to allow for replacement of the filter material. The end of the return pipe away from the filter cartridge is fixedly connected to the bottom of the hot air transmission pipe, and the return pipe is connected to the inside of the hot air transmission pipe.

[0014] Furthermore, the rear end of the output shaft of the rotary drive device passes through the front of the drying trough and the front of the material basket and extends into the material basket to be fixedly connected to the rotating cylinder. The rear end of the rotating cylinder passes through the material basket and the inner wall of the back of the drying trough and extends to the rear side of the drying trough to be fixedly connected to the positioning plate. The inner wall of the front of the positioning plate and the inner wall of the back of the drying trough are provided with rectangular grooves to accommodate the movement of the connecting plate.

[0015] Furthermore, the top end of the spring is fixedly connected to the middle of the bottom of the stirring plate, and the spring can support the stirring plate. The front of the movable seat is provided with a slider, which is disposed inside the sliding guide groove. The movable seat is slidably connected to the sliding guide groove through the slider. Furthermore, temperature sensor 1, temperature sensor 2, and temperature sensor 3 are all connected to electric telescopic rod 1 via a PLC controller. A timer is installed outside the drying tank, and the timer is connected to electric telescopic rod 2. When the timer reaches its specified time, it controls electric telescopic rod 2 to extend or retract once.

[0016] The beneficial effects of this invention are: 1. The core of this invention lies in its ability to automatically adjust the extension range of the stirring component according to the height of the grain accumulation, thereby achieving dynamic matching between the stirring intensity and the amount of material. This ensures uniform heating while effectively avoiding mechanical damage. Combined with the retractable cloth bag structure at the four corners of the bottom, which periodically pushes the accumulated material, it solves the problem of uneven drying caused by the long-term retention of material in the corners, thus improving the overall drying quality. 2. This invention achieves precise energy management through an intelligent temperature control system. Based on feedback from multiple temperature sensors, the PLC can adjust the heat source power, fan speed, and electric air valve opening in a coordinated manner to keep the drying temperature stable within the optimal range. The unique waste heat recovery component can separate the moisture and heat in the exhaust gas, and the drying hot air can be reintroduced into the circulation system, which significantly reduces heat loss and allows the equipment to maintain high-efficiency operation in an energy-saving state. 3. In this invention, the through holes in the stirring plate transform the traditional airflow-obstructing turning components into airflow guiding devices, achieving synergistic effects of turning and ventilation. The adjustable turning intensity, combined with the timed corner clearing mechanism, enables the equipment to adapt to different batches of drying operations. Ultimately, while improving the utilization rate of thermal energy, it ensures the integrity and quality stability of corn kernels during the drying process. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a small, energy-efficient corn kernel dryer proposed in this invention. Figure 2 This is a schematic diagram of the internal structure of the drying tank of a small, energy-efficient corn kernel dryer proposed in this invention. Figure 3 This is a schematic diagram of the rotating drum structure of a small, energy-efficient corn kernel dryer proposed in this invention. Figure 4 This is a schematic diagram of the material basket structure of a small, energy-efficient corn kernel dryer proposed in this invention. Figure 5 This is a schematic diagram of the exploded structure of the cloth bag of a small, energy-efficient corn kernel dryer proposed in this invention. Figure 6 This is an exploded structural diagram of an electric telescopic rod of a small, energy-efficient corn kernel dryer proposed in this invention. Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the exploded structure of the stirring plate of a small, energy-efficient corn kernel dryer proposed in this invention. Figure 9 This is a schematic diagram of the connecting block structure of a small, energy-efficient corn kernel dryer proposed in this invention. Figure 10 This is a schematic diagram of the reflux pipe structure of a small, energy-efficient corn kernel dryer proposed in this invention.

[0018] In the diagram: 1. Heat source generator; 2. Hot air transmission pipe; 3. Drying tank; 4. Protective cover; 5. Waste discharge pipe; 6. Material basket; 7. Rotary drive device; 8. Adjustment component; 81. Rotating cylinder; 82. Positioning plate; 83. Electric telescopic rod one; 84. Sliding guide groove; 85. Agitation component; 851. Connecting plate; 852. Moving seat; 853. Spring one; 854. Agitating plate; 855. Fixing strip; 856. Spring two; 9. Anti-accumulation component; 91. Fixing plate; 92. Electric telescopic rod two; 93. Connecting block; 94. Cloth bag; 10. Waste heat recovery component; 101. Filter cylinder; 102. Return pipe. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0020] Example 1: Reference Figure 1-10 This invention provides a technical solution: an energy-saving and efficient small corn kernel dryer, including a heat source generator 1, which generates heat during operation. A hot air transmission pipe 2 is connected to the rear of the heat source generator 1. A drying trough 3 is fixedly connected to the end of the hot air transmission pipe 2 away from the heat source generator 1. During operation, the hot air transmission pipe 2 can transfer the heat generated by the heat source generator 1 to the drying trough 3. A protective cover 4 is slidably connected to the top of the drying trough 3. The protective cover 4 enhances the drying efficiency inside the drying trough 3. A waste discharge pipe 5 is located in the middle of the top of the protective cover 4 for discharging waste during drying. The dryer also includes: Material basket 6 is set inside the drying tank 3 and is used to store and stack corn kernels; A rotating drum 81 is rotatably installed inside the material basket 6. A stirring component 85 that can extend and retract outward is installed inside the rotating drum 81. Through holes are opened on both sides of the stirring component 85. The stirring component 85 can move inside the rotating drum 81. When the height of the piled corn kernels is high, the stirring component 85 is controlled to extend outward inside the rotating drum 81, so that the contact area of ​​the stirring component 85 with the corn kernels is increased. When the height of the piled corn kernels is low, the stirring component 85 is controlled to move inward outside the rotating drum 81, so that the contact area of ​​the stirring component 85 with the corn kernels is reduced, thus avoiding excessive turning of the corn kernels and breakage. The positioning disk 82 is fixedly connected to the rear side of the rotating cylinder 81. A drive source is provided inside the positioning disk 82 to drive the stirring component 85 to move inside the rotating cylinder 81. A rotary drive device 7 is located on the front of the drying tank 3 and is used to drive the rotating cylinder 81 to rotate inside the material basket 6. The cloth bag 94 is set at the four corners of the bottom of the material basket 6. The cloth bag 94 has a telescopic component on the side away from the material basket 6, which is used to drive the cloth bag 94 to move at the four corners of the bottom of the material basket 6, pushing the corn kernels piled up at the four corners of the bottom of the material basket 6 toward the center of the material basket 6. The cloth bag 94 is used to replace the four corners of the bottom of the material basket 6, so that the four corners of the bottom of the material basket 6 are set as a deformable structure.

[0021] In this embodiment, corn kernels are placed inside the material basket 6 in the drying trough 3. Then, the heat source generator 1 and the hot air transmission pipe 2 are started to allow hot air to enter the drying trough 3 and dry the corn kernels in the material basket 6 from bottom to top. During the drying process, the control 54 is activated to turn the corn kernels in the material basket 6, making the drying more uniform. At the same time, the telescopic component can push the cloth bag 94 towards the bottom center of the material basket 6, which can prevent the corn kernels from accumulating in the four corners.

[0022] Example 2: Reference Figure 3-8 Based on Embodiment 1, the present invention provides a technical solution that further includes an adjustment component 8, which consists of a rotating cylinder 81, a positioning disk 82, an electric telescopic rod 83, a sliding guide groove 84, and a stirring component 85. The rotating cylinder 81 is fixedly connected to the rear side of the rotating drive device 7, the positioning disk 82 is fixedly connected to the back of the rotating cylinder 81, the electric telescopic rod 83 is fixedly connected to the inner wall of the front of the positioning disk 82, the sliding guide groove 84 is fixedly connected to the inner wall of the front of the rotating cylinder 81, and the stirring component 85 is disposed inside the rotating cylinder 81.

[0023] The stirring assembly 85 consists of a connecting plate 851, a movable seat 852, a first spring 853, a stirring plate 854, a fixing bar 855, and a second spring 856. The fixing bar 855 is fixedly connected to the middle of the rotating cylinder 81, the second spring 856 is fixedly connected to the outside of the fixing bar 855, the connecting plate 851 is fixedly connected to the end of the second spring 856 away from the fixing bar 855, the moving seat 852 is fixedly connected to the top of the connecting plate 851, the first spring 853 is fixedly connected to the top of the moving seat 852, and the stirring plate 854 is slidably connected to the outside of the top of the moving seat 852.

[0024] The surface of the material basket 6 has multiple holes, with an opening rate of 25%-35%.

[0025] A heat sensor is installed at the interface between the hot air transmission pipe 2 and the drying tank 3. A fan is installed at the interface between the hot air transmission pipe 2 and the heat source generator 1. The fan is a centrifugal fan with an air volume range of 2000-5000 m³ / h and an air pressure range of 800-1500 Pa. It is frequency adjustable. A heat sensor is installed at the bottom of the material basket 6 inside the drying tank 3. A heat sensor is installed at the bottom of the waste discharge pipe 5. These are used to monitor the inlet air temperature, working temperature and outlet air temperature inside the drying tank 3 in real time. An electric air valve is installed inside the hot air transmission pipe 2. The electric air valve is linked to the fan for control.

[0026] The rear end of the output shaft of the rotary drive device 7 passes through the front of the drying trough 3 and the front of the material basket 6 and extends into the material basket 6 and is fixedly connected to the rotating cylinder 81. The rear end of the rotating cylinder 81 passes through the material basket 6 and the inner wall of the back of the drying trough 3 and extends to the rear side of the drying trough 3 and is fixedly connected to the positioning plate 82. The inner wall of the front of the positioning plate 82 and the inner wall of the back of the drying trough 3 are provided with rectangular grooves to accommodate the movement of the connecting plate 851.

[0027] The top of spring 853 is fixedly connected to the middle of the bottom of the stirring plate 854. Spring 853 can support the stirring plate 854. The front of the moving seat 852 is provided with a slider, which is located inside the sliding guide groove 84. The moving seat 852 is slidably connected to the sliding guide groove 84 through the slider.

[0028] Temperature sensor 1, temperature sensor 2, and temperature sensor 3 are all connected to electric telescopic rod 1 83 via a PLC controller. A timer is installed outside the drying tank 3, and the timer is connected to electric telescopic rod 2 92. When the timer reaches the specified time, it controls electric telescopic rod 2 92 to extend or retract once.

[0029] Example 3: Reference Figure 9-10 Based on Embodiment 2, the present invention provides a technical solution that further includes an anti-stacking component 9, which consists of a fixing plate 91, an electric telescopic rod 92, a connecting block 93, and a cloth bag 94. The cloth bag 94 is fixedly connected to the four corners of the bottom of the material basket 6. The connecting block 93 is fixedly connected to the bottom of the cloth bag 94 on the side away from the material basket 6. The fixing plate 91 is fixedly connected to the inside of the drying tank 3. The electric telescopic rod 92 is fixedly connected to the side of the fixing plate 91 away from the inner wall of the drying tank 3. The telescopic end of the electric telescopic rod 92 is fixedly connected to the connecting block 93.

[0030] It also includes a waste heat recovery component 10, which consists of a filter cartridge 101 and a return pipe 102. The filter cartridge 101 is fixedly connected to the top of the protective cover 4 and is located outside the waste discharge pipe 5. The return pipe 102 is fixedly connected to the middle of the back of the filter cartridge 101. The filter cartridge 101 is equipped with a filter material, and the top of the filter cartridge 101 is threaded with a sealing cap, which allows the filter material to be replaced. The end of the return pipe 102 away from the filter cartridge 101 is fixedly connected to the bottom of the hot air transmission pipe 2, and the return pipe 102 is connected to the inside of the hot air transmission pipe 2.

[0031] Work process: Slide the protective cover 4 to the right to open the top of the drying tank 3, then control the heat source generator 1 and the fan in the hot air transmission pipe 2 to start simultaneously, then put the corn kernels into the material basket 6 and close the protective cover 4. The heat generated by the heat source generator 1 is pressurized and transported by the fan in the hot air transmission pipe 2, and diffuses from the bottom to the upper layer of the drying tank 3 through the hot air transmission pipe 2 and the material basket 6. Thermal sensor 1, thermal sensor 2, and thermal sensor 3 collect the temperature PV of each area in real time and feed it back to the PLC control system. SP refers to the temperature setpoint; High temperature control stage (PV>SP): The heating power of the heat source generator 1 is reduced in a stepwise manner, while the fan speed is reduced proportionally, and the opening of the electric air valve in the hot air transmission pipe 2 is increased, which can increase the heat dissipation effect. During the low-temperature control phase (PV < SP): the heating power gradient of the heat source generator 1 is increased, the fan speed is increased accordingly, and the opening of the electric air valve in the hot air transmission pipe 2 is reduced, which can enhance the heat preservation effect.

[0032] When drying different amounts of corn kernels, temperature sensors 1, 2, and 3 are used to collect real-time temperature data from each area. Temperature sensor 1 monitors the initial hot air temperature output by heat source generator 1, temperature sensor 2 monitors the actual temperature of the corn kernels themselves, and temperature sensor 3 monitors the temperature of the exhaust gas. When the temperatures monitored by temperature sensors 2 and 3 exceed 60 degrees Celsius, high-temperature control is required. The difference between the values ​​of temperature sensors 2 and 3 is also compared. If the difference is large, it indicates that the drying is not uniform. The drying process is adjusted according to the amount of corn kernels input. The amount of corn kernels is adjusted. When the total amount of corn kernels is large, the electric telescopic rod 83 in the positioning plate 82 is controlled to work. When the electric telescopic rod 83 is working, it drives the connecting plate 851, the moving seat 852, the spring 853 and the stirring plate 854 to move away from the rotating cylinder 81 at the same time, and moves to the maximum stroke of the stirring plate 854. At this time, the volume extended at the stirring plate 854 is large. The rotary drive device 7 is controlled to work to make the rotating cylinder 81 rotate, so that the stirring plate 854 can fully turn over the corn kernels when a large amount of corn kernels are put in, so that the corn kernels can be heated evenly in the material basket 6. When the total amount of corn kernels is small, the electric telescopic rod 83 is controlled to move the stirring plate 854 to its normal length, so that the corn kernels can be turned over with a smaller contact volume of the stirring plate 854, avoiding damage to the corn kernels during the turning process. When the stirring plate 854 tumbles in the material basket 6, the through holes set on the stirring plate 854 can enhance the internal air flow, so that the corn kernels can fully contact the air when tumbling. This makes the stirring plate 854 no longer an obstacle to the airflow, but a guide device for the airflow. This not only eliminates the instantaneous airflow unevenness caused by tumbling, but also realizes the synergistic effect of mechanical tumbling and airflow supply, effectively solving the technical problem of mutual interference between "tumbling" and "ventilation" in the drying process. By setting a spring 853 at the bottom of the stirring plate 854, the stirring plate 854 has a certain retraction ability, which plays a protective role when in contact with harder materials.

[0033] By connecting the electric telescopic rod 2 92 to an external timer, when the timer reaches the specified time, the electric telescopic rod 2 92 will extend and retract once. When the electric telescopic rod 2 92 extends and retracts once, it can push the corn kernels piled up at the four corners of the bottom of the material basket 6 to the center of the material basket 6, so as to avoid the corn kernels from accumulating in the corners of the bottom of the material basket 6 for too long and causing over-drying, thus ensuring the uniformity of the drying process. When drying corn kernels in drying tank 3, in the initial stage, a large amount of water vapor is generated and flows upward. Some of the water vapor is discharged through waste pipe 5, and some of the water vapor is dried by the filter material in filter cylinder 101 and then refilled into hot air transmission pipe 2 to complete waste heat recovery. At the same time, in the early stage of drying, due to the heat absorption of a large amount of water evaporation, the temperature monitored by temperature sensor 3 will be low. In the later stage, as the moisture decreases, the temperature monitored by temperature sensor 3 will rise and approach the temperature monitored by temperature sensor 1. The rising curve of temperature sensor 3 can be used as an indirect judgment of the drying process. At the same time, when the temperature of temperature sensor 3 in waste pipe 5 is high, it indicates that the temperature is not being fully utilized. The electric air valve in hot air transmission pipe 2 can be adjusted to further keep the drying tank 3 warm and improve the thermal energy utilization rate of the device during use.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An energy-efficient and high-performance small corn kernel dryer, comprising a heat source generator (1), characterized in that: The heat source generator (1) is connected to a hot air transmission pipe (2) at its rear side. A drying tank (3) is fixedly connected to one end of the hot air transmission pipe (2) away from the heat source generator (1). A protective cover (4) is slidably connected to the top of the drying tank (3). A waste discharge pipe (5) is provided in the middle of the top of the protective cover (4). The device also includes: The material basket (6) is set inside the drying tank (3) for storing and stacking corn kernels; A rotating drum (81) is rotatably installed inside the material basket (6). A stirring component (85) capable of extending and retracting outward is installed inside the rotating drum (81). Through holes are provided on both sides of the stirring component (85). The stirring component (85) can move inside the rotating drum (81). When the height of the piled corn kernels is high, the stirring component (85) is controlled to extend outward inside the rotating drum (81), so that the contact area of ​​the stirring component (85) with the corn kernels increases. When the height of the piled corn kernels is low, the stirring component (85) is controlled to move inward outside the rotating drum (81), so that the contact area of ​​the stirring component (85) with the corn kernels decreases, thus avoiding excessive turning of the corn kernels and causing breakage. The positioning disk (82) is fixedly connected to the rear side of the rotating cylinder (81). The positioning disk (82) is equipped with a drive source for driving the stirring component (85) to move inside the rotating cylinder (81). A rotary drive device (7) is installed on the front of the drying tank (3) to drive the rotating cylinder (81) to rotate inside the material basket (6); A cloth bag (94) is set at the four corners of the bottom of the material basket (6). A telescopic component is provided on the side of the cloth bag (94) away from the material basket (6) to drive the cloth bag (94) to move at the four corners of the bottom of the material basket (6) and push the corn kernels piled up at the four corners of the bottom of the material basket (6) toward the center of the material basket (6).

2. The energy-saving and efficient small-scale corn kernel dryer according to claim 1, characterized in that: It also includes an adjustment assembly (8), which consists of a rotating cylinder (81), a positioning plate (82), an electric telescopic rod (83), a sliding guide groove (84), and an agitation assembly (85); The rotating cylinder (81) is fixedly connected to the rear side of the rotating drive device (7), the positioning disk (82) is fixedly connected to the back of the rotating cylinder (81), the electric telescopic rod (83) is fixedly connected to the inner wall of the front of the positioning disk (82), the sliding guide groove (84) is fixedly connected to the inner wall of the front of the rotating cylinder (81), and the stirring component (85) is disposed inside the rotating cylinder (81).

3. The energy-saving and efficient small-scale corn kernel dryer according to claim 2, characterized in that: The agitation assembly (85) consists of a connecting plate (851), a movable seat (852), a spring one (853), an agitation plate (854), a fixing bar (855), and a spring two (856); The fixing bar (855) is fixedly connected to the middle of the rotating cylinder (81), the second spring (856) is fixedly connected to the outside of the fixing bar (855), the connecting plate (851) is fixedly connected to the end of the second spring (856) away from the fixing bar (855), the moving seat (852) is fixedly connected to the top of the connecting plate (851), the first spring (853) is fixedly connected to the top of the moving seat (852), and the stirring plate (854) is slidably connected to the outside of the top of the moving seat (852).

4. The energy-saving and efficient small-scale corn kernel dryer according to claim 3, characterized in that: It also includes an anti-stacking component (9), which consists of a fixing plate (91), an electric telescopic rod (92), a connecting block (93), and a cloth bag (94); The cloth bag (94) is fixedly connected to the four corners of the bottom of the material basket (6), the connecting block (93) is fixedly connected to the bottom of the cloth bag (94) away from the material basket (6), the fixing plate (91) is fixedly connected to the inside of the drying trough (3), the electric telescopic rod two (92) is fixedly connected to the side of the fixing plate (91) away from the inner wall of the drying trough (3), and the telescopic end of the electric telescopic rod two (92) is fixedly connected to the connecting block (93).

5. The energy-saving and efficient small-scale corn kernel dryer according to claim 4, characterized in that: It also includes a waste heat recovery component (10), which is composed of a filter cartridge (101) and a return pipe (102); The filter cylinder (101) is fixedly connected to the top of the protective cover (4) and located outside the waste discharge pipe (5). The return pipe (102) is fixedly connected to the middle of the back of the filter cylinder (101).

6. The energy-saving and efficient small-scale corn kernel dryer according to claim 5, characterized in that: The material basket (6) has multiple holes on its surface, with an opening rate of 25%-35%.

7. The energy-saving and efficient small-scale corn kernel dryer according to claim 6, characterized in that: A heat sensor is installed at the interface between the hot air transmission pipe (2) and the drying tank (3). A fan is installed at the interface between the hot air transmission pipe (2) and the heat source generator (1). The fan is a centrifugal fan with an air volume range of 2000-5000 m³ / h and an air pressure range of 800-1500 Pa. It is frequency adjustable. A heat sensor is installed at the bottom of the material basket (6) inside the drying tank (3). A heat sensor is installed at the bottom of the waste discharge pipe (5) to monitor the inlet air temperature, working temperature and outlet air temperature inside the drying tank (3) in real time. An electric air valve is installed inside the hot air transmission pipe (2). The electric air valve is linked to the fan for control.

8. The energy-saving and efficient small-scale corn kernel dryer according to claim 7, characterized in that: The filter cylinder (101) is provided with a filter material. The top of the filter cylinder (101) is threaded with a sealing cap, which can replace the filter material. The end of the return pipe (102) away from the filter cylinder (101) is fixedly connected to the bottom of the hot air transmission pipe (2), and the return pipe (102) is connected to the inside of the hot air transmission pipe (2).

9. The energy-saving and efficient small-scale corn kernel dryer according to claim 8, characterized in that: The rear end of the output shaft of the rotary drive device (7) passes through the front of the drying trough (3) and the front of the material basket (6) and extends into the material basket (6) and is fixedly connected to the rotating cylinder (81). The rear end of the rotating cylinder (81) passes through the material basket (6) and the inner wall of the back of the drying trough (3) and extends to the rear side of the drying trough (3) and is fixedly connected to the positioning plate (82). The inner wall of the front of the positioning plate (82) and the inner wall of the back of the drying trough (3) are provided with rectangular grooves to accommodate the movement of the connecting plate (851).

10. The energy-saving and efficient small-scale corn kernel dryer according to claim 9, characterized in that: The top of the spring (853) is fixedly connected to the middle of the bottom of the stirring plate (854). The spring (853) can support the stirring plate (854). The front of the movable seat (852) is provided with a slider, which is located inside the sliding guide groove (84). The movable seat (852) is slidably connected to the sliding guide groove (84) through the slider.

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