Grain dryer conveying device and conveying method

Abstract

The invention relates to the technical field of dryer conveying devices, in particular to a grain dryer conveying device and a conveying method.The grain dryer conveying device comprises a lower conveying table, a lower conveying hopper bin is formed in the top of the lower conveying table, a quantitative bin is formed in the inner bottom of the lower conveying hopper bin, a material distributing wheel is rotationally connected into the quantitative bin, and an arc-shaped material distributing groove is formed in one end of the material distributing wheel; a moisture sensor is fixedly connected to the inner bottom of the arc-shaped material distributing groove, a discharging opening is formed in the bottom of the quantifying bin, a cooling material groove and a circulating material groove are formed in the bottom of the discharging opening, and a material guiding plate is hinged to the interior of the quantifying bin and installed between the cooling material groove and the circulating material groove. The moisture sensor is arranged to monitor the moisture content of grains in real time, and the driving assembly and the transmission assembly are matched, so that the grains are effectively distinguished according to the moisture content in the process of penetrating through the lower conveying hopper to enter the cooling trough or the circulating trough.

Description

Technical Field

[0001] The present invention relates to the technical field of dryer conveying devices, and specifically to a grain dryer conveying device and a transmission method. Background Technique

[0002] The harvested grain often contains a relatively high moisture content. If it is not dried in time, it is extremely likely to become a breeding ground for mold, which will then lead to mildew, resulting in the deterioration of the grain and making it inedible or unusable as seeds. The application of grain dryers can effectively solve this problem. Through scientific drying treatment, the moisture content of the grain can be accurately reduced to the standard range for safe storage, preventing mildew and germination, significantly improving the storage stability of the grain, extending its shelf life, and ensuring the quantity and quality safety of the grain.

[0003] An existing grain dryer device, such as a lower conveying device of a large-scale grain dryer proposed in the patent application number "CN205066401U", includes a conveying housing, a circulating grain discharging mechanism, and a grain distributing bin. The grain distributing bin is enclosed by a left vertical plate, a right inclined plate, and two front and rear inclined plates. A circulating discharging port is opened at the lower part of the left vertical plate. The circulating grain discharging mechanism is arranged outside the grain distributing bin and is communicated with the circulating discharging port. The conveying housing is located at the lower end of the grain distributing bin and is fixedly connected to the bottom ends of the three inclined plates. A spiral conveying shaft for conveying grain passes through the circulating discharging port and is located inside the conveying housing and the circulating grain discharging mechanism.

[0004] However, in actual application, after the above-mentioned patented technology dries the grain, through the rotation drive of a series of grain distributing wheels, the grain is guided to fall and accumulate in the grain distributing bin. This processing method causes the steam generated during the drying process to accumulate inside the grain pile during the grain accumulation process when the temperature of the grain has not fully decreased after drying, resulting in uneven moisture distribution inside and outside the grain pile. Subsequently, in the subsequent circulating drying process, the grain with uneven moisture distribution is dried synchronously again, which causes the grain with a lower moisture content to be over-dried, while the grain with a higher moisture content continues to be dried, affecting the drying quality of the grain. Summary of the Invention

[0005] The purpose of the present invention is to provide a grain dryer conveying device and a transmission method to solve the problems raised in the above-mentioned background technique.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A conveying device for a grain dryer, comprising a lower conveying table. A lower conveying hopper bin is opened at the top of the lower conveying table. A quantitative bin is opened at the inner bottom of the lower conveying hopper bin. A distributing wheel is rotatably connected inside the quantitative bin. An arc-shaped distributing groove is opened at one end of the distributing wheel. A moisture sensor is fixedly connected to the inner bottom of the arc-shaped distributing groove. A blanking port is opened at the bottom of the quantitative bin. A cooling material groove and a circulating material groove are respectively opened at the bottom of the blanking port. A guiding plate is hinged inside the quantitative bin, and the guiding plate is installed in the middle of the cooling material groove and the circulating material groove;

[0008] A driving component for driving the distributing wheel to rotate is installed at one end of the lower conveying table, and a transmission component for driving the guiding plate to deflect is installed at one end of the lower conveying table. A circulating component for guiding the grain to be circulated and dried is installed at the output end of the circulating material groove. A blanking mechanism for cooling the grain is installed at one end of the cooling material groove.

[0009] Preferably, the driving component includes a worm gear fixedly connected to one end of the distributing wheel. A worm is rotatably connected to the outside of the lower conveying table and meshes with the worm gear. A sorting motor is fixedly connected to the outside of the lower conveying table. The output end of the sorting motor is fixedly connected to the worm. The sorting motor is electrically connected to the moisture sensor.

[0010] Preferably, the transmission component includes a first transmission gear rotatably connected to the outside of the lower conveying table. A second transmission gear meshing with the first transmission gear is fixedly connected to the hinged end of the guiding plate. A first transmission wheel is fixedly connected to one end of the first transmission gear. A second transmission wheel is fixedly connected to one end of the distributing wheel. A polyurethane transmission belt is sleeved outside the second transmission wheel and the first transmission wheel, and it is designed without teeth.

[0011] Preferably, the friction coefficient μ of the polyurethane transmission belt and the radii R of the first transmission wheel and the second transmission wheel satisfy μR≥T_max / F_N, where T_max is the maximum allowable torque of the system and F_N is the normal pressure of the pulley on the transmission belt.

[0012] Preferably, the circulating component includes a circulating groove opened at one end of the lower conveying table. The input end of the circulating groove is communicated with the output end of the circulating material groove. A circulating auger is rotatably connected inside the circulating groove. A circulating motor is fixedly connected to the top of the lower conveying table. The output end of the circulating motor is fixedly connected to the circulating auger. A guiding groove communicated with the inside of the circulating groove is opened at one end of the lower conveying table.

[0013] Preferably, the blanking mechanism includes a cyclone separation bin fixedly connected to one end of the lower conveying table. A blower is fixedly connected to one end of the lower conveying table. The output end of the blower is communicated with the top air outlet of the cyclone separation bin through a pipeline. A cooling component is installed inside the cyclone separation bin.

[0014] Preferably, the cooling assembly includes a spiral refrigeration groove opened inside the cyclone separation bin. One end of the lower conveying table is fixedly connected to a refrigerator, and one end of the lower conveying table is fixedly connected to a water pump. A spiral feeding table is fixedly connected inside the cyclone separation bin. An aggregate bin is installed on one side of the lower conveying table, and the aggregate bin is installed below the output end of the cyclone separation bin. The output end of the spiral refrigeration groove is fixedly connected to a first guide pipe, the first guide pipe is fixedly connected to the input end of the water pump, the input end of the spiral refrigeration groove is fixedly connected to a second guide pipe, and the second guide pipe is fixedly connected to the output end of the refrigerator. The input end of the refrigerator is fixedly connected to a third guide pipe, and the third guide pipe is fixedly connected to the output end of the water pump.

[0015] Preferably, a sleeve rod is rotatably connected inside the lower conveying hopper bin. The bottom of the sleeve rod is fixedly connected to a first arc-shaped sieve. An inner rod is rotatably connected inside the lower conveying hopper bin. The bottom of the inner rod is fixedly connected to a second arc-shaped sieve. One end of the inner rod passes through the inside of the sleeve rod and is fixedly connected to a linkage assembly for driving the sleeve rod and the inner rod to deflect coaxially and in opposite directions.

[0016] Preferably, the linkage assembly includes a first bevel gear fixedly connected to one end of the sleeve rod. One end of the inner rod is fixedly connected to a second bevel gear. A third bevel gear is rotatably connected to the outside of the lower conveying table. The third bevel gear is installed between the first bevel gear and the second bevel gear and is synchronously engaged with the first bevel gear and the second bevel gear. One end of the third bevel gear is fixedly connected to a fourth bevel gear. One end of the worm is fixedly connected to a fifth bevel gear engaged with the fourth bevel gear.

[0017] A transmission method of a grain dryer, the method comprising the following steps:

[0018] S1. Moisture detection and classified transportation

[0019] Start the moisture sensor to continuously monitor the moisture content of the grains collected in the arc-shaped material distribution groove. If the moisture content meets the standard, trigger the classification motor to rotate forward, driving the worm to mesh with the worm gear. If the moisture content exceeds the standard, rotate in the reverse direction. The material distribution wheel rotates 180 degrees to one side of the cooling material groove or the recycling material groove under the drive of the worm gear, driving the arc-shaped material distribution groove to flip, so that the grains fall into the inside of the quantitative bin. Synchronously drive the guide plate and the material distribution wheel to deflect in the opposite direction through the polyurethane transmission belt, making it tilt and fit against the inner wall of the quantitative bin, guiding the grains to slide along the inclined plane into the designated channel. The grains that meet the standard enter the cooling material groove, and the grains that exceed the standard enter the recycling material groove;

[0020] S2. Cooling treatment and impurity separation

[0021] Start the fan to suck the grain inside the cooling trough into the cyclone separation bin. The grain slowly falls along the spiral guiding table, extending the heat dissipation time. Then start the refrigerator and the water pump, and circulate and transport the cooling medium through the spiral cooling trough to the cyclone separation bin to exchange heat with the grain and reduce the temperature. Among them, the heavier grain falls into the aggregate bin to complete cooling and collection, and the lighter dust is discharged through the fan with the air flow;

[0022] S3. Circulating drying

[0023] The substandard grain is introduced into the bottom of the circulation trough through the circulation trough. Start the circulation motor to drive the circulation auger to lift the grain to the input end of the dryer. The grain slides down through the guiding trough to the inlet of the dryer for secondary drying;

[0024] S4. Anti-accumulation and uniform dispersion

[0025] While driving the worm to rotate, it drives the bevel gear five to rotate, and at the same time drives the bevel gear three to drive the bevel gear one and the bevel gear two to rotate in the opposite direction, thereby driving the arc-shaped screen one and the arc-shaped screen two to deflect alternately, intercepting and dispersing the falling grain, ensuring uniform dispersion inside the lower conveying hopper bin to reduce steam retention caused by grain accumulation.

[0026] Advantages of the present invention:

[0027] 1. By setting a moisture sensor to monitor the moisture content of the grain in real time and cooperating with the driving component and the transmission component, the present invention ensures that the grain is effectively distinguished according to its moisture content during the process of passing through the lower conveying hopper bin and entering the cooling trough or the circulation trough. This process not only improves the efficiency of subsequent processing but also prevents quality problems that may be caused by the mixed processing of grains with different moisture contents.

[0028] 2. By starting the fan to suck the grain inside the cooling trough into the cyclone separation bin, the grain slowly falls along the spiral guiding table, extending the heat dissipation time. Subsequently, start the refrigerator and the water pump, and circulate and transport the cooling medium through the spiral cooling trough to the cyclone separation bin to exchange heat with the grain to reduce the temperature. Among them, the heavier grain falls into the aggregate bin to complete cooling and is collected, while the lighter dust is discharged through the fan with the air flow. This design not only improves the cooling efficiency but also ensures the uniformity of the grain during the cooling process, avoiding quality degradation caused by excessive or too low local temperature.

[0029] 3. While driving the worm to rotate, the present invention also causes the bevel gear five to rotate, and further drives the bevel gear three to drive the bevel gear one and the bevel gear two to rotate in the opposite direction, thereby causing the arc-shaped screen one and the arc-shaped screen two to deflect alternately, intercepting and dispersing the falling grain, ensuring uniform dispersion of the grain inside the lower conveying hopper bin to reduce steam retention caused by grain accumulation. Description of the drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0031] Figure 1 is the overall structural schematic diagram of the present invention;

[0032] Figure 2 is the side sectional view of the lower conveying table in the present invention;

[0033] Figure 3 is the exploded view of the internal structure of the lower conveying table in the present invention;

[0034] Figure 4 is the three-dimensional structural schematic diagram of the driving component in the present invention;

[0035] Figure 5 is the three-dimensional structural schematic diagram of the transmission component in the present invention;

[0036] Figure 6 is the schematic diagram of the connection relationship between the polyurethane transmission belt, the first transmission wheel, and the second transmission wheel in the present invention;

[0037] Figure 7 is the exploded view of the internal structure of the cyclone separation bin in the present invention;

[0038] Figure 8 is the three-dimensional structural schematic diagram of the linkage component in the present invention;

[0039] The reference numerals in the figure are as follows: 1, lower conveying table; 2, lower conveying hopper bin; 3, metering bin; 4, distributing wheel; 5, arc-shaped distributing trough; 6, moisture sensor; 7, discharging port; 8, cooling trough; 9, circulating trough; 10, guide plate; 11, worm gear; 12, worm; 13, sorting motor; 14, first transmission gear; 15, second transmission gear; 16, first transmission wheel; 17, second transmission wheel; 18, polyurethane transmission belt; 19, circulating trough; 20, circulating auger; 21, circulating motor; 22, guide trough; 23, cyclone separation bin; 24, fan; 25, spiral cooling trough; 26, cooler; 27, water pump; 28, spiral guide table; 30, sleeve rod; 31, first arc-shaped sieve; 32, inner rod; 33, second arc-shaped sieve; 34, first bevel gear; 35, second bevel gear; 36, third bevel gear; 37, fourth bevel gear; 38, fifth bevel gear; 39, aggregate box; 40, first guide pipe; 41, second guide pipe; 42, third guide pipe. Detailed implementation manners

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] A conveying device and a conveying method for a grain dryer, wherein the conveying device quantitatively classifies and collects grains. As Figure 2 shown, the grains are classified and conveyed to the feeding mechanism or the circulation component through the arc-shaped material distribution trough according to their moisture content, which belongs to a kind of sorting and conveying equipment.

[0042] As Figures 1 - 6 shown, it includes a lower conveying table 1. A lower conveying hopper bin 2 is opened at the top of the lower conveying table 1. A quantitative bin 3 is opened at the inner bottom of the lower conveying hopper bin 2. A material distribution wheel 4 is rotatably connected inside the quantitative bin 3. An arc-shaped material distribution trough 5 is opened at one end of the material distribution wheel 4. A moisture sensor 6 is fixedly connected to the inner bottom of the arc-shaped material distribution trough 5. A feeding port 7 is opened at the bottom of the quantitative bin 3. A cooling material trough 8 and a circulation material trough 9 are respectively opened at the bottom of the feeding port 7. A guide plate 10 is hinged inside the quantitative bin 3. The guide plate 10 is installed in the middle of the cooling material trough 8 and the circulation material trough 9;

[0043] A driving component for driving the material distribution wheel 4 to rotate is installed at one end of the lower conveying table 1, and a transmission component for driving the guide plate 10 to deflect is installed at one end of the lower conveying table 1. A circulation component for guiding the grains to circulate and dry is installed at the output end of the circulation material trough 9. A feeding mechanism for cooling the grains is installed at one end of the cooling material trough 8;

[0044] Among them, the driving component includes a worm gear 11 fixedly connected to one end of the material distribution wheel 4. A worm 12 meshing with the worm gear 11 is rotatably connected to the outside of the lower conveying table 1. A classification motor 13 is fixedly connected to the outside of the lower conveying table 1. The output end of the classification motor 13 is fixedly connected to the worm 12. The classification motor 13 is electrically connected to the moisture sensor 6;

[0045] And, the transmission component includes a first transmission gear 14 rotatably connected to the outside of the lower conveying table 1. A second transmission gear 15 meshing with the first transmission gear 14 is fixedly connected to the hinged end of the guide plate 10. A first transmission wheel 16 is fixedly connected to one end of the first transmission gear 14. A second transmission wheel 17 is fixedly connected to one end of the material distribution wheel 4. A polyurethane transmission belt 18 is sleeved on the peripheries of the second transmission wheel 17 and the first transmission wheel 16, and it is designed without teeth;

[0046] Moreover, the friction coefficient μ of the polyurethane transmission belt 18 and the radii R of the first driving wheel 16 and the second driving wheel 17 satisfy μR ≥ T_max / F_N, where T_max is the maximum allowable torque of the system and F_N is the normal pressure of the pulley on the transmission belt.

[0047] During use, first, connect the top of the lower conveying hopper bin 2 to the output end of the grain dryer, and ensure that the grain can fall into the interior of the lower conveying hopper bin 2 after passing through the grain dryer. Then, utilize the gravitational force to make the grain slide along the inner wall of the lower conveying hopper bin 2 into the arc-shaped material distribution groove 5 for collection. At the same time, start the moisture sensor 6 to monitor the moisture content of the grain collected in the arc-shaped material distribution groove 5 in real time. The device moisture sensor 6 uses a Decagon GS3 moisture sensor. According to the monitoring data of the moisture sensor 6, determine whether the moisture content of the grain collected in the arc-shaped material distribution groove 5 reaches the standard;

[0048] When the moisture sensor 6 monitors that the moisture content of the grain collected in the arc-shaped material distribution groove 5 reaches the standard, control the sorting motor 13 to drive the worm 12 to rotate, and make the worm 12 engage with the worm gear 11. At the same time, the worm gear 11 drives the material distribution wheel 4 to rotate 180 degrees towards the cooling trough 8 side, and then the material distribution wheel 4 drives the arc-shaped material distribution groove 5 to rotate towards the interior of the metering bin 3. In this way, the grain with a moisture content within the standard range falls into the interior of the metering bin 3 under the action of gravity. At the same time, the material distribution wheel 4 drives the second driving wheel 17 to rotate synchronously, drives the first driving wheel 16 to rotate synchronously through the polyurethane transmission belt 18, and makes the first driving wheel 16 engage with the first transmission gear 14. Furthermore, the second transmission gear 15 drives the guide plate 10 to deflect in the opposite direction to the material distribution wheel 4, so that the top of the guide plate 10 contacts the inner wall of the metering bin 3 and is inclined and installed inside the metering bin 3. In this way, the grain falling from the arc-shaped material distribution groove 5 into the interior of the metering bin 3 will slide along the guiding inclined surface of the guide plate 10 into the interior of the cooling trough 8, and then enter the blanking mechanism through the cooling trough 8 for cooling and discharging;

[0049] If the moisture sensor 6 monitors that the moisture content of the grain collected in the arc-shaped material distribution groove 5 exceeds the standard, control the sorting motor 13 to drive the worm 12 to rotate in the reverse direction, and make the worm 12 engage with the worm gear 11. At the same time, drive the material distribution wheel 4 to drive the arc-shaped material distribution groove 5 to rotate 180 degrees towards the side of the circulation trough 9, so that the grain with a moisture content exceeding the standard falls into the interior of the metering bin 3 under the action of gravity. At the same time, the transmission assembly drives the guide plate 10 to deflect in the opposite direction to the material distribution wheel 4, so that the guide plate 10 is inclined and installed inside the metering bin 3, and guides the grain falling from the interior of the arc-shaped material distribution groove 5 into the interior of the metering bin 3 to slide along the guiding inclined surface of the guide plate 10 into the interior of the circulation trough 9, and then enters the circulation assembly through the circulation trough 9 and is lifted to the input end of the grain dryer for secondary drying;

[0050] While the transmission component drives the deflector 10 to deflect, once the deflector 10 contacts the inner wall of the metering bin 3, using the toothless design of the polyurethane transmission belt 18, and with its friction coefficient μ and the radii R of the first transmission wheel 16 and the second transmission wheel 17 satisfying μR≥T_max / F_N, it allows the polyurethane transmission belt 18 to slip between the first transmission wheel 16 and the second transmission wheel 17. This can make up for the rotational angle difference between the distributing wheel 4 and the deflector 10, ensuring the stability and reliability of the transmission. This helps to classify and convey the grains according to the moisture content of the grains and guide the grains to different processing paths, thereby optimizing the grain drying process.

[0051] As Figures 1 - 3 , Figure 7 shown, the circulation component includes a circulation groove 19 opened at one end of the lower conveying table 1. The input end of the circulation groove 19 is communicated with the output end of the circulation hopper 9. A circulation auger 20 is rotatably connected inside the circulation groove 19. A circulation motor 21 is fixedly connected to the top of the lower conveying table 1. The output end of the circulation motor 21 is fixedly connected to the circulation auger 20. A material guiding groove 22 communicated with the inside of the circulation groove 19 is opened at one end of the lower conveying table 1;

[0052] Among them, the blanking mechanism includes a cyclone separation bin 23 fixedly connected to one end of the lower conveying table 1. A blower 24 is fixedly connected to one end of the lower conveying table 1. The output end of the blower 24 is communicated with the top air outlet of the cyclone separation bin 23 through a pipeline. A cooling component is installed inside the cyclone separation bin 23;

[0053] Moreover, the cooling component includes a spiral refrigeration groove 25 opened inside the cyclone separation bin 23. A refrigerator 26 is fixedly connected to one end of the lower conveying table 1, and a water pump 27 is fixedly connected to one end of the lower conveying table 1. A spiral material guiding table 28 is fixedly connected inside the cyclone separation bin 23. An aggregate box 39 is installed on one side of the lower conveying table 1. The aggregate box 39 is installed below the output end of the cyclone separation bin 23. The output end of the spiral refrigeration groove 25 is fixedly connected to a first material guiding pipe 40. The first material guiding pipe 40 is fixedly connected to the input end of the water pump 27. The input end of the spiral refrigeration groove 25 is fixedly connected to a second material guiding pipe 41. The second material guiding pipe 41 is fixedly connected to the output end of the refrigerator 26. The input end of the refrigerator 26 is fixedly connected to a third material guiding pipe 42. The third material guiding pipe 42 is fixedly connected to the output end of the water pump 27.

[0054] During use, when the moisture sensor 6 of the monitoring system detects that the moisture content of the grains collected from the arc-shaped distributing groove 5 reaches the preset standard and guides them into the cooling hopper 8, the blower 24 is started to pump the grains inside the cooling hopper 8 and suck them into the cyclone separation bin 23. Using the principle of the cyclone separator, the heavier grains spiral down along the inner wall of the cyclone separation bin 23 and fall through the cyclone separation bin 23 into the aggregate box 39 for collection. At the same time, the lighter dust and other impurities contained in the grains are discharged with the air through the blower 24;

[0055] When the grain passes through the inside of the cyclone separation bin 23, the spiral guiding table 28 is arranged to guide the falling path of the grain, so that the grain spirally slides down along the surface of the spiral guiding table 28 to assist the grain in offsetting part of the gravity effect and extending its time inside the cyclone separation bin 23. At the same time, the water pump 27 and the cooler 26 are started. The cooler 26 adopts the Ferrotec TEC1-12706 kit, so that the water pump 27 pumps the cooling medium inside the spiral cooling tank 25 through the third guide pipe 42 into the cooler 26 for cooling. Subsequently, the cooled medium inside the cooler 26 passes through the second guide pipe 41 into the spiral cooling tank 25 and exchanges heat with the grain passing through the inside of the cyclone separation bin 23 to reduce the temperature, thereby realizing rapid cooling of the grain;

[0056] When the moisture sensor 6 of the monitoring system detects that the moisture content of the grain collected in the arc-shaped feeding trough 5 exceeds the standard and is introduced into the inner bottom of the circulation tank 19 through the circulation trough 9, the circulation motor 21 is started to drive the circulation auger 20 to rotate, pushing the grain at the inner bottom of the circulation tank 19 to move upward. When the grain moves upward along the length direction of the circulation tank 19 to one side of the guide trough 22, the grain slides down along the guiding direction of the guide trough 22 under the action of gravity to the input port of the grain dryer for secondary drying.

[0057] As Figures 1 - 5 、 Figure shown, a rotating connecting sleeve rod 30 is connected inside the lower conveying hopper bin 2. The bottom of the sleeve rod 30 is fixedly connected with an arc-shaped sieve mesh one 31. An inner rod 32 is rotatably connected inside the lower conveying hopper bin 2. The bottom of the inner rod 32 is fixedly connected with an arc-shaped sieve mesh two 33. One end of the inner rod 32 passes through the inside of the sleeve rod 30 and is fixedly connected with a linkage assembly for driving the sleeve rod 30 and the inner rod 32 to deflect coaxially in the opposite direction;

[0058] Among them, the linkage assembly includes a bevel gear one 34 fixedly connected to one end of the sleeve rod 30. One end of the inner rod 32 is fixedly connected with a bevel gear two 35. A bevel gear three 36 is rotatably connected to the outside of the lower conveying table 1. The bevel gear three 36 is installed between the bevel gear one 34 and the bevel gear two 35 and meshes with the bevel gear one 34 and the bevel gear two 35 synchronously. One end of the bevel gear three 36 is fixedly connected with a bevel gear four 37. One end of the worm 12 is fixedly connected with a bevel gear five 38 meshing with the bevel gear four 37.

[0059] During use, when the sorting motor 13 is started to drive the worm 12 to mesh with the worm wheel 11, and then drive the material distribution wheel 4 to rotate, the worm 12 will also drive the bevel gear five 38 to mesh with the bevel gear four 37. This enables the bevel gear four 37 to synchronously rotate the bevel gear three 36, and further enables the bevel gear three 36 to mesh with the bevel gear one 34 and the bevel gear two 35 synchronously, driving the bevel gear one 34 and the bevel gear two 35 to rotate in opposite directions synchronously. As a result, the bevel gear one 34 and the bevel gear two 35 respectively drive the sleeve rod 30 and the inner rod 32 to rotate in opposite directions, and at the same time, the sleeve rod 30 and the inner rod 32 respectively drive the arc-shaped screen one 31 and the arc-shaped screen two 33 to deflect alternately. During the alternating deflection of the arc-shaped screen one 31 and the arc-shaped screen two 33, they intercept the grains falling into the inner part of the lower conveying hopper bin 2 through the grain dryer, and disperse the intercepted grains during the deflection process to ensure that the grains are evenly dispersed and fall to the bottom of the lower conveying hopper bin 2. This process effectively reduces the situation where grains pile up and accumulate inside the lower conveying hopper bin 2, avoids the problem that the internal heat and water vapor of the grains cannot be discharged in time, and improves the drying effect of the device.

[0060] A transmission method for a grain dryer, the method comprising the following steps:

[0061] S1, Moisture detection and classified transportation

[0062] Start the moisture sensor 6 to continuously monitor the moisture content of the grains collected in the arc-shaped material distribution trough 5. If the moisture content meets the standard, trigger the sorting motor 13 to rotate forward, driving the worm 12 to mesh with the worm wheel 11. If the moisture content exceeds the standard, rotate in the reverse direction. The material distribution wheel 4 rotates 180 degrees to one side of the cooling trough 8 or the circulating trough 9 under the drive of the worm wheel 11, driving the arc-shaped material distribution trough 5 to flip, so that the grains fall into the internal part of the quantitative bin 3. Synchronously drive the guide plate 10 and the material distribution wheel 4 to deflect in the opposite direction through the polyurethane transmission belt 18, making it tilt and fit the inner wall of the quantitative bin 3, guiding the grains to slide along the inclined plane into the designated channel. The grains that meet the standard enter the cooling trough 8, and the grains that exceed the standard enter the circulating trough 9;

[0063] S2, Cooling treatment and impurity separation

[0064] Start the fan 24 to suck the grains inside the cooling trough 8 into the cyclone separation bin 23. The grains slowly fall along the spiral guide table 28 to extend the heat dissipation time. Start the refrigerator 26 and the water pump 27, and circulate and transport the cooling medium through the spiral cooling trough 25 to the cyclone separation bin 23 for heat exchange with the grains to reduce the temperature. Among them, the heavier grains fall into the aggregate box 39 to complete cooling and collection, and the lighter dust is discharged through the fan 24 along with the air flow;

[0065] S3, Circulating drying

[0066] The grain exceeding the standard is introduced into the bottom inside the circulation tank 19 through the circulation trough 9. The circulation motor 21 is started to drive the circulation auger 20 to lift the grain to the input end of the dryer. The grain slides down to the dryer inlet through the material guiding trough 22 for secondary drying;

[0067] S4. Anti - accumulation and uniform dispersion

[0068] While driving the worm 12 to rotate, the bevel gear five 38 is driven to rotate. At the same time, the bevel gear three 36 is driven to drive the bevel gear one 34 and the bevel gear two 35 to rotate in the opposite direction, thereby driving the arc - shaped screen one 31 and the arc - shaped screen two 33 to deflect alternately, intercepting and dispersing the falling grain to ensure uniform dispersion inside the lower conveying hopper bin 2, so as to reduce the steam retention caused by grain accumulation.

[0069] The working principle of an automotive electronic instrument panel pointer assembly device and its method provided by the present invention is as follows:

[0070] First, the moisture sensor 6 is started to monitor the moisture content of the grain collected in the arc - shaped material distributing trough 5 in real time, and the classification motor 13 is controlled to drive the worm 12 to rotate so that it meshes with the worm wheel 11. At the same time, the worm wheel 11 drives the material distributing wheel 4 to rotate 180 degrees to one side of the cooling trough 8 or the circulation trough 9. Further, the material distributing wheel 4 drives the arc - shaped material distributing trough 5 to rotate towards the inside of the metering bin 3. In this way, the grain with the moisture content within the standard range falls into the inside of the metering bin 3 under the action of gravity. At the same time, the material distributing wheel 4 drives the transmission wheel two 17 to rotate synchronously, drives the transmission wheel one 16 to rotate synchronously through the polyurethane transmission belt 18, and makes the transmission wheel one 16 mesh with the transmission gear one 14. Further, the transmission gear two 15 drives the guide plate 10 to deflect in the opposite direction to the material distributing wheel 4, so that the top of the guide plate 10 contacts the inner wall of the metering bin 3 and is inclined and installed inside the metering bin 3. In this way, the grain falling from the arc - shaped material distributing trough 5 into the inside of the metering bin 3 will slide down along the guiding inclined plane of the guide plate 10 into the inside of the cooling trough 8 or the circulation trough 9, and then enter the blanking mechanism through the cooling trough 8 for cooling and discharging, or enter the circulation assembly to be lifted to the input end of the grain dryer for secondary drying;

[0071] After the grain is introduced into the cooling feed tank 8, start the fan 24 to pump the grain inside the cooling feed tank 8 and suck it into the cyclone separation bin 23. Using the principle of the cyclone separator, the heavier grain spirally slides down along the inner wall of the cyclone separation bin 23 and passes through the cyclone separation bin 23 into the aggregate box 39 for collection. At the same time, the lighter dust and other impurities contained in the grain are discharged with the air through the fan 24. Meanwhile, during the process of the grain passing through the inside of the cyclone separation bin 23, the spiral guide table 28 is set to guide the falling path of the grain, so that the grain spirally slides down along the surface of the spiral guide table 28, and cooperates with the water pump 27 and the cooler 26 to pump the refrigeration medium inside the spiral refrigeration tank 25 for circulating cooling. At the same time, it exchanges heat with the grain passing through the inside of the cyclone separation bin 23 to cool down, so as to achieve rapid cooling of the grain;

[0072] Then, after the grain is introduced into the inner bottom of the circulation tank 19 through the circulation feed tank 9, start the circulation motor 21 to drive the circulation auger 20 to rotate, and push the grain at the inner bottom of the circulation tank 19 upward. When the grain moves upward along the length direction of the circulation tank 19 to one side of the guide chute 22, the grain slides down along the guiding direction of the guide chute 22 under the action of gravity to the input port of the grain dryer for secondary drying;

[0073] And when starting the classification motor 13 to drive the worm 12 to mesh with the worm gear 11, and then drive the distribution wheel 4 to rotate, the worm 12 will also drive the bevel gear five 38 to mesh with the bevel gear four 37. This enables the bevel gear four 37 to synchronously rotate the bevel gear three 36, and further enables the bevel gear three 36 to mesh with the bevel gear one 34 and the bevel gear two 35 synchronously, driving the bevel gear one 34 and the bevel gear two 35 to rotate synchronously in opposite directions. As a result, the bevel gear one 34 and the bevel gear two 35 respectively drive the sleeve rod 30 and the inner rod 32 to rotate in opposite directions, and at the same time, the sleeve rod 30 and the inner rod 32 respectively drive the arc-shaped screen one 31 and the arc-shaped screen two 33 to deflect alternately. During the process of the arc-shaped screen one 31 and the arc-shaped screen two 33 deflecting alternately, they intercept the grain falling through the grain dryer into the lower conveying hopper bin 2, and disperse the intercepted grain during the deflection process to ensure that the grain is evenly dispersed and falls to the bottom of the lower conveying hopper bin 2.

[0074] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A conveying device for a grain dryer, comprising a lower conveying table (1), characterized in that, A lower conveying platform (1) has a lower conveying hopper bin (2) opened at its top. A quantitative bin (3) is opened at the inner bottom of the lower conveying hopper bin (2). A distributing wheel (4) is rotatably connected inside the quantitative bin (3). An arc-shaped distributing groove (5) is opened at one end of the distributing wheel (4). A moisture sensor (6) is fixedly connected to the inner bottom of the arc-shaped distributing groove (5). A blanking port (7) is opened at the bottom of the quantitative bin (3). A cooling material groove (s) and a circulating material groove (9) are respectively opened at the bottom of the blanking port (7). A guiding plate (10) is hinged inside the quantitative bin (3), and the guiding plate (10) is installed in the middle of the cooling material groove (8) and the circulating material groove (9). A driving assembly for driving the distributing wheel (4) to rotate is installed at one end of the lower conveying platform (1), and a transmission assembly for driving the guiding plate (10) to deflect is installed at one end of the lower conveying platform (1). A circulating assembly for guiding grains to be circulated and dried is installed at the output end of the circulating material groove (9). A blanking mechanism for cooling grains is installed at one end of the cooling material groove (8).

2. The conveying device of a grain dryer according to claim 1, characterized in that The driving assembly includes a worm gear (11) fixedly connected to one end of the distributing wheel (4). A worm (12) meshing with the worm gear (11) is rotatably connected to the outside of the lower conveying platform (1). A sorting motor (13) is fixedly connected to the outside of the lower conveying platform (1). The output end of the sorting motor (13) is fixedly connected to the worm (12). The sorting motor (13) is electrically connected to the moisture sensor (6).

3. The conveying device of a grain dryer according to claim 1, characterized in that, The transmission assembly includes a first transmission gear (14) rotatably connected to the outside of the lower conveying platform (1). A second transmission gear (15) meshing with the first transmission gear (14) is fixedly connected to the hinged end of the guiding plate (10). A first transmission wheel (16) is fixedly connected to one end of the first transmission gear (14). A second transmission wheel (17) is fixedly connected to one end of the distributing wheel (4). A polyurethane transmission belt (18) is sleeved around the outer perimeters of the second transmission wheel (17) and the first transmission wheel (16), and it has a toothless design.

4. The conveying device of a grain dryer according to claim 3, characterized in that The friction coefficient μ of the polyurethane transmission belt (18) and the radii R of the first transmission wheel (16) and the second transmission wheel (17) satisfy μR≥T_max / F_N, where T_max is the maximum allowable torque of the system and F_N is the normal pressure of the pulley on the transmission belt.

5. A conveying device of a grain dryer according to claim 1, characterized in that, The circulating assembly includes a circulating groove (19) opened at one end of the lower conveying platform (1). The input end of the circulating groove (19) is communicated with the output end of the circulating material groove (9). A circulating auger (20) is rotatably connected inside the circulating groove (19). A circulating motor (21) is fixedly connected to the top of the lower conveying platform (1). The output end of the circulating motor (21) is fixedly connected to the circulating auger (20). A guiding groove (22) communicated with the inside of the circulating groove (19) is opened at one end of the lower conveying platform (1).

6. The conveying device of a grain dryer according to claim 1, characterized in that, The blanking mechanism includes a cyclone separation bin (23) fixedly connected to one end of the lower conveying table (1). One end of the lower conveying table (1) is fixedly connected to a fan (24). The output end of the fan (24) is communicated with the top air outlet of the cyclone separation bin (23) through a pipeline. A cooling component is installed inside the cyclone separation bin (23).

7. A conveying device of a grain dryer according to claim 1, characterized in that, The cooling component includes a spiral refrigeration tank (25) opened inside the cyclone separation bin (23). One end of the lower conveying table (1) is fixedly connected to a refrigerator (26), and one end of the lower conveying table (1) is fixedly connected to a water pump (27). A spiral guiding table (28) is fixedly connected inside the cyclone separation bin (23). An aggregate bin (39) is installed on one side of the lower conveying table (1). The aggregate bin (39) is installed below the output end of the cyclone separation bin (23). The output end of the spiral refrigeration tank (25) is fixedly connected to a first guiding pipe (40). The first guiding pipe (40) is fixedly connected to the input end of the water pump (27). The input end of the spiral refrigeration tank (25) is fixedly connected to a second guiding pipe (41). The second guiding pipe (41) is fixedly connected to the output end of the refrigerator (26). The input end of the refrigerator (26) is fixedly connected to a third guiding pipe (42). The third guiding pipe (42) is fixedly connected to the output end of the water pump (27).

8. The conveying device of a grain dryer according to claim 2, characterized in that, A sleeve rod (30) is rotatably connected inside the lower conveying hopper bin (2). An arc-shaped sieve mesh one (31) is fixedly connected to the bottom of the sleeve rod (30). An inner rod (32) is rotatably connected inside the lower conveying hopper bin (2). An arc-shaped sieve mesh two (33) is fixedly connected to the bottom of the inner rod (32). One end of the inner rod (32) passes through the inside of the sleeve rod (30) and is fixedly connected with a linkage component for driving the sleeve rod (30) and the inner rod (32) to deflect coaxially and in opposite directions.

9. The conveying device of a grain dryer according to claim 8, characterized in that, The linkage component includes a first bevel gear (34) fixedly connected to one end of the sleeve rod (30). A second bevel gear (35) is fixedly connected to one end of the inner rod (32). A third bevel gear (36) is rotatably connected to the outside of the lower conveying table (1). The third bevel gear (36) is installed between the first bevel gear (34) and the second bevel gear (35) and is synchronously meshed with the first bevel gear (34) and the second bevel gear (35). A fourth bevel gear (37) is fixedly connected to one end of the third bevel gear (36). A fifth bevel gear (38) meshed with the fourth bevel gear (37) is fixedly connected to one end of the worm (12).

10. A transmission method of a grain dryer, characterized in that This method is applicable to a grain dryer conveying device described in any one of claims 1-9. This method includes the following steps: S1. Moisture detection and classified conveying Start the moisture sensor (6) to monitor the moisture content of the grain collected in the arc-shaped material distribution tank (5) in real time. If the moisture content meets the standard, trigger the classification motor (13) to rotate forward, driving the worm (12) to mesh with the worm gear (11). If the moisture content exceeds the standard, it rotates in the reverse direction. The material distribution wheel (4) rotates 180 degrees to one side of the cooling material tank (8) or the circulating material tank (9) under the drive of the worm gear (11), driving the arc-shaped material distribution tank (5) to flip, so that the grain falls into the interior of the metering bin (3). Synchronously, drive the guide plate (10) and the material distribution wheel (4) to deflect in the opposite direction through the polyurethane conveyor belt (18), making it tilt and fit the inner wall of the metering bin (3), guiding the grain to slide along the inclined plane into the designated channel. The qualified grain enters the cooling material tank (8), and the unqualified grain enters the circulating material tank (9); S2. Cooling treatment and impurity separation Start the fan (24) to suck the grain inside the cooling material tank (8) into the cyclone separation bin (23). The grain slowly falls along the spiral guide table (28) to extend the heat dissipation time. Start the refrigerator (26) and the water pump (27), and circulate and transport the cooling medium through the spiral cooling tank (25) to the cyclone separation bin (23) to exchange heat with the grain and cool it down. Among them, the heavier grain falls into the aggregate box (39) to complete cooling and collection, and the lighter dust is discharged through the fan (24) along with the air flow; S3. Circulating drying The unqualified grain is introduced into the inner bottom of the circulating tank (19) through the circulating material tank (9). Start the circulating motor (21) to drive the circulating auger (20) to lift the grain to the input end of the dryer. The grain slides down through the guide trough (22) to the inlet of the dryer for secondary drying; S4. Anti-accumulation and uniform dispersion While driving the worm (12) to rotate, drive the bevel gear five (38) to rotate, and at the same time drive the bevel gear three (36) to drive the bevel gear one (34) and the bevel gear two (35) to rotate in the opposite direction, thereby driving the arc-shaped screen one (31) and the arc-shaped screen two (33) to deflect alternately, intercepting and dispersing the falling grain to ensure uniform dispersion into the interior of the lower conveying hopper bin (2) to reduce steam retention caused by grain accumulation.

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