Efficient screening device for tempering layer of grain dryer

Abstract

The invention relates to the technical field of grain layer detection, and discloses an efficient screening device for a tempering layer of a grain dryer, which comprises a drying box and a collecting hopper arranged in an inner cavity of the drying box, a feeding assembly is mounted on the top wall of the drying box, and transmission rails are assembled on the front inner wall and the rear inner wall of the drying box; transmission assemblies capable of vertically transmitting along the transmission rails are arranged at the front end and the rear end of the collecting hopper, the transmission assemblies are further connected with an impurity removal assembly rotationally arranged in the collecting hopper, an oscillation assembly and a slag discharging assembly which can slide along the inner wall of the drying box are arranged on the left side and the right side of the collecting hopper correspondingly, and a flow limiting assembly is arranged at the bottom end of the collecting hopper; the bottom wall of the collecting hopper and lifting assemblies installed on the two sides of an inner cavity of the drying box are movably arranged. The waste guide groove and the recursion frame are intermittently acted by the containing hopper, so that in the process of injecting grains into a tempering layer, the entering stored grains are automatically and uniformly shaken, the chaff mingled in the grains is removed, the plane of the grain layer is conveniently and quickly obtained, the purity of the grains is improved, and the accuracy of grain layer measurement is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grain layer detection, and more specifically to a high-efficiency screening device for a slow drying layer of a grain dryer. Background Art

[0002] The amount of grain piled in the slow-drying layer of the dryer directly affects the drying efficiency of the grain. When the amount of grain piled is too large, it will lead to poor ventilation between the grains and the heat cannot be evenly distributed, causing some grains to overheat and be damaged. On the contrary, if the grain piled is too little, although good ventilation between the grains can be guaranteed, the amount of grain dried in each cycle is small, which wastes energy. Therefore, it is necessary to test the drying time of grains with different piles to determine the amount of grain that achieves the best drying effect of the dryer. Through experiments and data analysis, the optimal drying time under different piles can be found. In order to obtain the grain pile data, an infrared detector can be selected to measure the distance change on the surface of the grain pile to realize the detection of grain storage in the slow-drying layer.

[0003] However, when grain is injected into the slow-retention layer, it does not spread out evenly. On the contrary, a small conical hill with a gradually decreasing cross-section from bottom to top is formed at the center of the grain landing point. This uneven distribution interferes with the infrared detector's measurement of the distance on the surface of the grain pile, resulting in the inability to obtain accurate plane data. In addition, the husks mixed in the grain not only occupy the storage space of the slow-retention layer, but also further compress the effective volume that can be used to store grain, which results in a large deviation between the measurement results obtained by infrared detection and the actual situation. Under the combined effect of these problems, the measurement accuracy of the entire system is seriously affected.

[0004] Therefore, the present invention proposes an efficient screening device for the slow-release layer of a grain dryer, so that during the process of filling grain into the slow-release layer, the incoming stored grain can be automatically shaken and the husks mixed in the grain can be removed, thereby facilitating the quick acquisition of the grain layer plane and improving the grain purity, thereby improving the accuracy of grain layer measurement. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-efficiency screening device for the slow-release layer of a grain dryer to solve the problem existing in the above-mentioned background technology of how to automatically shake the incoming stored grain and remove the husks mixed in the grain during the process of filling grain into the slow-release layer, so as to facilitate the acquisition of the grain layer plane and improve the grain purity, so as to improve the accuracy of grain layer measurement.

[0006] The present invention provides the following technical solutions: a high-efficiency screening device for a slow-release layer of a grain dryer, comprising a drying box and a collecting hopper arranged in the inner cavity thereof, a feeding assembly being installed on the top wall of the drying box, and transmission tracks being installed on the front and rear inner walls of the drying box, transmission assemblies capable of vertical transmission along the transmission tracks being installed on the front and rear ends of the collecting hopper, the transmission assembly being connected to a debris removal assembly rotatably arranged in the collecting hopper, an oscillating assembly and a slag discharge assembly capable of sliding along the inner wall of the drying box being respectively installed on the left and right sides of the collecting hopper, a limiting flow assembly being installed at the bottom end of the collecting hopper, and a bottom wall of the collecting hopper and a lifting assembly installed on both sides of the inner cavity of the drying box being movably arranged, and a controller being also installed on the drying box; The inner and outer side walls of the transmission track are respectively provided with a single-sided gear track and a vertical slide track, a connecting channel is provided between the single-sided gear track and the vertical slide track, and the transmission assembly includes a T-shaped rotating shaft, a limiting wheel and a plane gear, wherein one end of the T-shaped rotating shaft movably passes through the transmission track, a limiting wheel located in the vertical slide track is rotatably sleeved on its surface, and a plane gear that can mesh with the single-sided gear track is fixedly sleeved on the end, so that during the sinking process of the collecting hopper, the plane gear located on the outer wall of the collecting hopper will flip downward along the single-sided gear track of the transmission track for transmission, and the rotating plane gear can carry the T-shaped rotating shaft to rotate coaxially, and cooperate with the limiting of the limiting wheel, so that the transmission assembly can only be lifted and lowered in a rotating manner in the vertical direction; The impurity removal component includes a transmission shaft, a U-shaped connecting rod and a hopper, wherein the end of the transmission shaft is rotatably sleeved in the side wall of the collecting hopper, and the transmission shaft is fixedly connected with the U-shaped connecting rod, and the hopper is assembled on the transmission shaft through the U-shaped connecting rod, and the hopper is centrally symmetrically arranged; A recursive rack is fixedly connected to the inner wall of the collecting hopper on the side away from the slag discharge component. When the collecting hopper rotates to the highest point, the recursive rack will touch the upper edge of the outer edge of the grain receiving port of the lower collecting hopper, so that the rotating collecting hopper can push the recursive rack to the left synchronously, so that it can carry the collecting hopper to slide to the left together, causing the collecting hopper to shift to the left, and the space on the right side of the collecting hopper after the shift is still sufficient for the collecting hopper to rotate.

[0007] Furthermore, the slag discharge assembly includes a positioning plate, a waste guiding trough, a guide slide rod and a first spring, wherein the positioning plate is fixedly connected to the inner wall of the drying box, the waste guiding trough is inclined and movably passes through the drying box and one side wall of the collecting hopper, the bottom end of the waste guiding trough is fixedly connected to the guide slide rod, the guide slide rod is slidably connected to the inclined slide rail of the positioning plate, and the guide slide rod and the positioning plate are connected by a first spring.

[0008] Furthermore, a front wall of the hopper that rotates clockwise with the transmission shaft as an axis is provided with a grain receiving opening communicated with the inner cavity thereof, and the remaining wall surfaces of the hopper are all provided with sieve holes.

[0009] Furthermore, when the hopper rotates to the highest point, the upper end edge of the waste chute fits with the grain receiving opening of the hopper, and the push rods on both sides of the waste chute are attached to the turning point of the U-shaped connecting rod and the hopper.

[0010] Furthermore, the transmission assembly also includes a differential arranged between the T-shaped rotating shaft and the collecting hopper, and the differential is composed of a gear ring, a planetary gear and a sun gear, wherein the gear ring can be vertically slidably arranged on the transmission track, a sun gear is arranged at the center of the gear ring, and planetary gears distributed circumferentially are arranged between the gear ring and the sun gear, and the planetary gears are meshed with the gear ring and the sun gear at the same time, and the planetary gears and the sun gear are respectively connected to the assembly shafts at the ends of the T-shaped rotating shaft and the transmission shaft.

[0011] Furthermore, the oscillation assembly includes a first tube bore, a first piston rod and a second spring, wherein the first tube bore is slidably connected to the inner wall of the drying box, the first piston rod is movably inserted into the inner cavity of the first tube bore, a second spring is provided between the plug handle of the first piston rod and the first tube bore, and the plug rod of the first piston rod is fixedly connected to the collecting hopper.

[0012] Furthermore, the feeding assembly includes a filling funnel and an infrared sensor, wherein the bottom side wall of the filling funnel is equipped with an infrared sensor, and the infrared sensor can detect the grain storage amount in the drying box by measuring the distance change on the surface of the grain pile, so that the detection path of the infrared sensor will not be affected by the hopper.

[0013] Furthermore, the feeding assembly also includes a support seat, and the filling funnel is fixedly installed on the top wall of the drying box via the support seat, and the opening at the bottom end of the filling funnel is connected to the inner cavity of the drying box and points to the left side of the inner cavity of the collecting hopper, and does not interfere with the rotation trajectory of the containing hopper.

[0014] Furthermore, the lifting assembly includes a second tube bore, a second piston rod, a third spring, a limit seat and a connecting frame, wherein the second tube bore is fixedly installed on the inner wall of the drying box through the connecting frame, a second piston rod is movably inserted in the second tube bore, a third spring is provided between the plug handle of the second piston rod and the second tube bore, and the top end of the plug rod of the second piston rod is fixedly connected to a limit seat that can be slidably connected to the collecting hopper.

[0015] Furthermore, the current limiting assembly includes an electric push rod, an L-shaped connecting rod and a current limiting plate, wherein the electric push rod is assembled on the bottom side wall of the collecting hopper, the telescopic end of the electric push rod is fixedly connected to the current limiting plate through the L-shaped connecting rod, the bottom wall of the collecting hopper is provided with a slot for accommodating the current limiting plate, and the bottom wall of the collecting hopper and the surface of the current limiting plate are provided with staggered grain distribution holes.

[0016] Technical effects and advantages of the present invention: The present invention cooperates with the transmission track, transmission component, impurity removal component, slag discharge component and recursive rack. As the collecting hopper continues to sink due to the increase in load, the planar gear will flip and move downward along the single-sided tooth track of the transmission track. The rotating planar gear can carry the T-shaped shaft to rotate coaxially, and then transmit the torque to the impurity removal component through the differential, causing the material hopper to rotate around the axis. The material hopper flips to the highest point to intersect with the waste guide chute and complete waste discharge. At the same time, the material hopper can also push the recursive rack to the left synchronously, so that it can carry the collecting hopper to slide along the upper left side of the limit seat, causing the collecting hopper to swing. Through the intermittent waste guide chute and the recursive rack of the material hopper, the incoming stored grain can be automatically shaken and the husks mixed in the grain can be removed during the process of filling the grain into the slow-recovery layer, which is convenient for quickly obtaining the grain layer plane and improving the grain purity, so as to improve the accuracy of grain layer measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention and its partial cross-section.

[0019] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle.

[0020] Figure 4 For the present invention Figure 1 Schematic diagram of the internal aggregate hopper and its transmission structure.

[0021] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point B in the middle.

[0022] Figure 6 It is a schematic diagram of the connection structure of the collecting hopper, transmission track, transmission assembly, impurity removal assembly and slag discharge assembly of the present invention.

[0023] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point C in the middle.

[0024] Figure 8 It is a schematic diagram of the connection structure of the collecting hopper, impurity removal component, slag discharge component, recursive frame and current limiting component of the present invention.

[0025] Fig. 9 It is a schematic diagram of the connection structure of the collecting hopper and the current limiting component of the present invention.

[0026] The accompanying drawings are marked as follows: 1. drying box; 2. collecting hopper; 3. feeding assembly; 301. filling funnel; 302. support seat; 303. infrared sensor; 4. transmission track; 5. transmission assembly; 501. T-shaped shaft; 502. limiting wheel; 503. plane gear; 504. differential; 5041. gear ring; 5042. planetary gear; 5043. sun gear; 6. impurity removal assembly; 601. transmission shaft; 602. U-shaped connecting rod; 603. hopper; 7. slag discharge assembly; 701. Positioning plate; 702, waste guiding trough; 703, guide slide bar; 704, first spring; 8, recursive frame; 9, oscillation assembly; 901, first tube chamber; 902, first piston rod; 903, second spring; 10, lifting assembly; 1001, second tube chamber; 1002, second piston rod; 1003, third spring; 1004, limit seat; 1005, connecting frame; 11, current limiting assembly; 1101, electric push rod; 1102, L-shaped connecting rod; 1103, current limiting plate; 12, controller. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are only examples. The high-efficiency screening device for the slow-release layer of a grain dryer involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0028] Reference Figure 1-9 The present invention provides a high-efficiency screening device for a slow-release layer of a grain dryer, comprising a drying box 1 and a collecting hopper 2 arranged in an inner cavity thereof, a feeding assembly 3 being installed on the top wall of the drying box 1, and symmetrically distributed transmission tracks 4 being installed on the front and rear inner walls of the drying box 1, transmission assemblies 5 capable of vertical transmission along the transmission tracks 4 being installed at the front and rear ends of the collecting hopper 2, and the transmission assembly 5 being connected to a debris removal assembly 6 rotatably arranged in the collecting hopper 2, an oscillating assembly 9 and a slag discharge assembly 7 capable of sliding up and down along the inner wall of the drying box 1 being installed on the left and right sides of the collecting hopper 2, respectively, a limiting flow assembly 11 being installed at the bottom end of the collecting hopper 2, and a lifting assembly 10 mirror-mounted on both sides of the inner cavity of the drying box 1 being movably arranged, and a controller 12 being also installed on the drying box 1.

[0029] In this embodiment, it should be specifically explained that the drying box 1 is the slow-release layer, and the bottom end of the drying box 1 is equipped with a discharge funnel, through which the dried grain is discharged into the collection device for storage; The feeding assembly 3 includes a material injection funnel 301, a support seat 302 and an infrared sensor 303, wherein the material injection funnel 301 is fixedly mounted on the top wall of the drying box 1 via the support seat 302, and the opening at the bottom end of the material injection funnel 301 is connected to the inner cavity of the drying box 1 and points to the left side of the inner cavity of the collecting hopper 2, and does not interfere with the rotation trajectory of the material holding hopper 603. In addition, the bottom side wall of the material injection funnel 301 is equipped with an infrared sensor 303, and the infrared sensor 303 can detect the grain storage in the drying box 1 by measuring the distance change on the surface of the grain pile, so that the detection path of the infrared sensor 303 will not be affected by the material holding hopper 603; The distance value measured by the infrared sensor 303 on the grain pile surface needs to exclude the height of the aggregate hopper 2 itself that changes with the load.

[0030] Reference Figure 2-8 The inner and outer side walls of the transmission track 4 are respectively provided with a single-sided rack rail and a vertical slide rail, and a connecting channel is provided between the single-sided rack rail and the vertical slide rail; The transmission assembly 5 includes a T-shaped rotating shaft 501, a limiting wheel 502 and a flat gear 503, wherein one end of the T-shaped rotating shaft 501 movably penetrates the transmission track 4, and a limiting wheel 502 located in the vertical slide rail is rotatably sleeved on its surface, and a flat gear 503 that can mesh with a single-sided gear rail is fixedly sleeved on the end, so that during the sinking process of the collecting hopper 2, the flat gear 503 located on the outer wall of the collecting hopper 2 will be turned downward along the single-sided gear rail of the transmission track 4 for transmission, and the rotating flat gear 503 can carry the T-shaped rotating shaft 501 to rotate coaxially, and cooperate with the limiting position of the limiting wheel 502, so that the transmission assembly 5 can only be lifted and lowered in a rotating manner in the vertical direction; The transmission assembly 5 also includes a differential 504 disposed between the T-shaped rotating shaft 501 and the collecting hopper 2. The differential 504 is composed of a gear ring 5041, planetary gears 5042 and a sun gear 5043. The gear ring 5041 can be vertically slidably disposed on the transmission track 4. The center of the gear ring 5041 is provided with a sun gear 5043. A circumferentially distributed planetary gears 5042 are disposed between the gear ring 5041 and the sun gear 5043. The planetary gears 5042 are simultaneously connected to the gear ring 5041 and the sun gear 5043. The ring 5041 and the sun gear 5043 are meshed, and the planetary gears 5042 and the sun gear 5043 are respectively connected to the assembly shafts at the ends of the T-shaped rotating shaft 501 and the transmission shaft 601. The T-shaped rotating shaft 501 can carry the planetary gears 5042 to make circular motion and drive the sun gear 5043 to spin, so as to transmit the torque to the sun gear 5043, i.e., the torque conversion and speed-up process. Then, the sun gear 5043 and the transmission shaft 601 rotate together, so that the impurity removal component 6 accelerates the rotation; The impurity removal component 6 includes a transmission shaft 601, a U-shaped connecting rod 602 and a hopper 603, wherein the end of the transmission shaft 601 is rotatably sleeved in the side wall of the collecting hopper 2, and the transmission shaft 601 is fixedly connected with the U-shaped connecting rod 602, and the hopper 603 is assembled on the transmission shaft 601 through the U-shaped connecting rod 602, and the hopper 603 is centrally symmetrically arranged; The slag discharge assembly 7 includes a positioning plate 701, a waste guiding trough 702, a guide slide bar 703 and a first spring 704, wherein the positioning plate 701 is fixedly connected to the inner wall of the drying box 1, the waste guiding trough 702 is tilted and movably penetrates the drying box 1 and the side wall of the collecting hopper 2, the bottom end of the waste guiding trough 702 is fixedly connected to the symmetrically distributed guide slide bar 703, the guide slide bar 703 is slidably connected to the inclined slide rail of the positioning plate 701, and the guide slide bar 703 and the positioning plate 701 are connected by the first spring 704, When the hopper 603 rotates, it can squeeze and push the waste guiding chute 702 to the right, and then the waste guiding chute 702 can slide outward along the inclined slide rail of the positioning plate 701 by means of the guide slide bar 703 at its bottom, so as to gradually withdraw from the inner cavity of the collecting hopper 2. On the one hand, it can make room for the material hopper 603 to turn over and avoid interfering with its running trajectory. On the other hand, after the material hopper 603 is withdrawn, the waste guiding chute 702 can be reset in time under the elastic force of the first spring 704, thereby ensuring the continuous waste guiding and excretion capacity of the waste guiding chute 702. A recursive rack 8 is fixedly connected to the inner wall of the collecting hopper 2 on the side away from the slag discharge assembly 7. When the material hopper 603 rotates to the highest point, the recursive rack 8 will touch the upper outer edge of the grain receiving port of the lower material hopper 603, so that the rotating material hopper 603 can synchronously push the recursive rack 8 to the left, so that it can carry the collecting hopper 2 to slide to the left, causing the collecting hopper 2 to shift to the left, and after the shift, the right side space of the collecting hopper 2 is still sufficient for the rotation of the collecting hopper 603.

[0031] In this embodiment, it is necessary to specifically explain that the front wall of the hopper 603, which rotates clockwise with the transmission shaft 601 as the axis, is provided with a grain receiving opening communicated with its inner cavity, and the other wall surfaces of the hopper 603 are provided with sieve holes, and the rotating hopper 603 can scoop up the grain in the collecting hopper 2, and in the process of lifting the grain, the grain particles can fall through the sieve holes on the surface of the hopper 603 and flow back into the collecting hopper 2, and the husks or straw mixed in the grain are intercepted because they cannot pass through the sieve holes; When the hopper 603 rotates to the highest point, the upper edge of the waste guide groove 702 fits with the grain receiving opening of the hopper 603, and the push rods on both sides of the waste guide groove 702 are attached to the turning point of the U-shaped connecting rod 602 and the hopper 603; The oscillating assembly 9 includes a first tube bore 901, a first piston rod 902 and a second spring 903, wherein the first tube bore 901 is slidably connected to the inner wall of the drying box 1, the first piston rod 902 is movably inserted into the inner cavity of the first tube bore 901, a second spring 903 is provided between the plug handle of the first piston rod 902 and the first tube bore 901, and the plug rod of the first piston rod 902 is fixedly connected to the collecting hopper 2; The lifting assembly 10 includes a second tube bore 1001, a second piston rod 1002, a third spring 1003, a limit seat 1004 and a connecting frame 1005, wherein the second tube bore 1001 is fixedly installed on the inner wall of the drying box 1 through the connecting frame 1005, the second piston rod 1002 is movably inserted in the second tube bore 1001, a third spring 1003 is provided between the plug handle of the second piston rod 1002 and the second tube bore 1001, and the top end of the plug rod of the second piston rod 1002 is fixedly connected to a limit seat 1004 that can be slidably connected to the collecting hopper 2.

[0032] Reference Fig. 9 The current limiting component 11 includes an electric push rod 1101, an L-shaped connecting rod 1102 and a current limiting plate 1103, wherein the electric push rod 1101 is assembled on the bottom side wall of the collecting hopper 2, and the telescopic end of the electric push rod 1101 is fixedly connected to the current limiting plate 1103 through the L-shaped connecting rod 1102, and the bottom wall of the collecting hopper 2 is provided with a slot for accommodating the current limiting plate 1103, and the bottom wall of the collecting hopper 2 and the surface of the current limiting plate 1103 are provided with staggered grain distribution holes. When it is necessary to unload grain from the collecting hopper 2, the telescopic end of the electric push rod 1101 can carry the current limiting plate 1103 through the L-shaped connecting rod 1102 and gradually withdraw from the slot of the collecting hopper 2, so that the grain distribution holes on the surfaces of the collecting hopper 2 and the current limiting plate 1103 are aligned, and the grain can smoothly pass through the collecting hopper 2 into the drying box 1.

[0033] Working principle of the present invention: Grain is poured into the collecting hopper 2 through the filling funnel 301. As the grain in the collecting hopper 2 continues to accumulate, its load gradually increases and it sinks downward due to the influence of gravitational potential energy. Then the collecting hopper 2 can push the second piston rod 1002 downward by means of the limit seat 1004, so that the second piston rod 1002 gradually compresses the third spring 1003 and shrinks in the inner cavity of the second tube chamber 1001, so that the collecting hopper 2 can carry the oscillation component 9, the recursive frame 8, the slag discharge component 7, the transmission component 5 and the impurity removal component 6 to descend together. At the same time, during the sinking process of the collecting hopper 2, the flat gear 503 located on the outer wall of the collecting hopper 2 will flip and move downward along the single-sided rack of the transmission track 4, and the rotating flat gear 503 can carry the T-shaped shaft 501 to rotate coaxially. The T-shaped rotating shaft 501 transmits the torque to the planetary gear 5042, which is then transmitted to the transmission shaft 601 after the sun gear 5043 changes the torque and speeds up, so that the impurity removal component 6 accelerates to rotate, and the rotating hopper 603 can pick up the grain in the collecting hopper 2. In the process of lifting the grain, the grain particles can fall through the sieve holes on the surface of the hopper 603 and flow back into the collecting hopper 2. The husks or straw mixed in the grain are intercepted because they cannot pass through the sieve holes. Until the hopper 603 turns over to the highest point and intersects with the waste guiding trough 702, the hopper 603 pours the husks or straw onto the top of the waste guiding trough 702, and then leads out of the drying box 1 through the waste guiding trough 702, so that the grain in the slow-relief layer can be turned over and impurities removed during the grain filling process, thereby ensuring the effective storage space of the slow-relief layer. At the same time, when the material hopper 603 flips to the highest point and intersects with the waste guiding slot 702 and completes the waste discharge, as the material hopper 603 continues to deflect, the material hopper 603 will squeeze and push the waste guiding slot 702 to the right, and then the waste guiding slot 702 can slide outward along the inclined slide rail of the positioning plate 701 by means of the guide slide bar 703 at its bottom, so as to gradually withdraw from the inner cavity of the collecting hopper 2. On the one hand, it makes room for the material hopper 603 to flip over and avoids interfering with its running trajectory. On the other hand, after the material hopper 603 is evacuated, the waste guiding slot 702 can be reset in time under the elastic force of the first spring 704, thereby ensuring the continuous waste guiding and discharge capacity of the waste guiding slot 702. During this period, the rotating material hopper 603 can also synchronously push the recursive rack 8 to the left, so that it can carry the collecting hopper 2 along the limit seat 10 together. 04 slides upward to the left, causing the collecting hopper 2 to deviate to the left, and then the first piston rod 902 can compress the second spring 903 under the push of the collecting hopper 2 and gradually shrink into the first tube chamber 901, and when the collecting hopper 603 cancels the action on the recursive rack 8, the collecting hopper 2 can be reset under the elastic force of the second spring 903, during which the collecting hopper 2 swings to shake the grain stored in the collecting hopper 2, so as to obtain an accurate plane data, along with the periodic rotation of the collecting hopper 603, the collecting hopper 603 will intermittently act on the waste guide trough 702 and the recursive rack 8, so as to realize the automatic shaking of the incoming stored grain and the removal of the husk mixed in the grain during the process of filling the grain into the slow-reinforcement layer, so as to quickly obtain the grain layer plane and improve the grain purity, so as to improve the accuracy of grain layer measurement; The infrared sensor 303 can then detect the grain storage in the drying box 1 by measuring the distance change on the surface of the grain pile, and detect the drying time of grains with different stacking amounts to determine how much grain can achieve the best drying effect of the dryer. Through experiments and data analysis, the optimal drying time under different stacking amounts can be found.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or modifications within the technical scope disclosed by the present invention; according to the technical plan and its improved conception of the present invention, all of which should be included under the protection of the present invention.

Claims

1. An efficient screening device for a slow-release layer of a grain dryer, comprising a drying box (1) and a collecting hopper (2) arranged in the inner cavity thereof, characterized in that: The top wall of the drying box (1) is provided with a loading assembly (3), and the front and rear inner walls of the drying box (1) are provided with transmission tracks (4). The front and rear ends of the collecting hopper (2) are provided with transmission assemblies (5) capable of vertical transmission along the transmission tracks (4), and the transmission assembly (5) is connected to a debris removal assembly (6) rotatably arranged in the collecting hopper (2). The left and right sides of the collecting hopper (2) are respectively provided with an oscillating assembly (9) and a slag discharge assembly (7) capable of sliding along the inner wall of the drying box (1). The bottom end of the collecting hopper (2) is provided with a limiting flow assembly (11), and the bottom wall of the collecting hopper (2) and the lifting assemblies (10) installed on both sides of the inner cavity of the drying box (1) are movably arranged. The drying box (1) is also provided with a controller (12); The inner and outer side walls of the transmission track (4) are respectively provided with a single-sided toothed track and a vertical slide track, and a connecting channel is provided between the single-sided toothed track and the vertical slide track. The transmission assembly (5) comprises a T-shaped rotating shaft (501), a limiting wheel (502) and a planar gear (503), wherein one end of the T-shaped rotating shaft (501) movably passes through the transmission track (4), a limiting wheel (502) located in the vertical slide track is rotatably sleeved on its surface, and a planar gear (503) that can mesh with the single-sided toothed track is fixedly sleeved on its end; The impurity removal component (6) comprises a transmission shaft (601), a U-shaped connecting rod (602) and a material hopper (603), wherein the end of the transmission shaft (601) is rotatably sleeved in the side wall of the collecting hopper (2), and the transmission shaft (601) is fixedly connected to the U-shaped connecting rod (602), and the material hopper (603) is assembled on the transmission shaft (601) via the U-shaped connecting rod (602), and the material hopper (603) is centrally symmetrically arranged; A recursive frame (8) is fixedly connected to the inner wall of the collecting hopper (2) on the side away from the slag discharge assembly (7).

2. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 1, characterized in that: The slag discharge assembly (7) comprises a positioning plate (701), a waste guiding trough (702), a guide slide bar (703) and a first spring (704), wherein the positioning plate (701) is fixedly connected to the inner wall of the drying box (1), the waste guiding trough (702) is inclined and movably penetrates the drying box (1) and a side wall of the collecting hopper (2), the bottom end of the waste guiding trough (702) is fixedly connected to the guide slide bar (703), the guide slide bar (703) is slidably connected to the inclined slide rail of the positioning plate (701), and the guide slide bar (703) and the positioning plate (701) are connected via the first spring (704).

3. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 1 is characterized by: The front wall of the material hopper (603) which rotates clockwise around the transmission shaft (601) is provided with a grain receiving opening which communicates with the inner cavity thereof, and the remaining wall surfaces of the material hopper (603) are provided with sieve holes.

4. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 2, characterized in that: When the material hopper (603) rotates to the highest point, the upper end edge of the waste guide groove (702) fits with the grain receiving opening of the material hopper (603), and the push rods on both sides of the waste guide groove (702) are attached to the turning point of the U-shaped connecting rod (602) and the material hopper (603).

5. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 1, characterized in that: The transmission assembly (5) further comprises a differential (504) arranged between the T-shaped rotating shaft (501) and the collecting hopper (2), the differential (504) comprising a gear ring (5041), planetary gears (5042) and a sun gear (5043), wherein the gear ring (5041) can be vertically slidably arranged on the transmission track (4), a sun gear (5043) is arranged at the center of the gear ring (5041), and planetary gears (5042) are arranged circumferentially between the gear ring (5041) and the sun gear (5043), the planetary gears (5042) are meshed with the gear ring (5041) and the sun gear (5043) at the same time, and the planetary gears (5042) and the sun gear (5043) are respectively connected to the assembly shafts at the ends of the T-shaped rotating shaft (501) and the transmission shaft (601).

6. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 1, characterized in that: The oscillating assembly (9) comprises a first tube bore (901), a first piston rod (902) and a second spring (903), wherein the first tube bore (901) is slidably connected to the inner wall of the drying box (1), the first piston rod (902) is movably inserted into the inner cavity of the first tube bore (901), a second spring (903) is provided between the plug handle of the first piston rod (902) and the first tube bore (901), and the plug rod of the first piston rod (902) is fixedly connected to the collecting hopper (2).

7. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 1, characterized in that: The feeding assembly (3) comprises a feeding funnel (301) and an infrared sensor (303), wherein the bottom side wall of the feeding funnel (301) is equipped with the infrared sensor (303), and the infrared sensor (303) can detect the grain storage amount in the drying box (1) by measuring the distance change of the grain pile surface.

8. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 7, characterized in that: The feeding assembly (3) further comprises a support seat (302), the injection funnel (301) being fixedly mounted on the top wall of the drying box (1) via the support seat (302), and the opening at the bottom end of the injection funnel (301) being connected to the inner cavity of the drying box (1) and pointing to the left side of the inner cavity of the collecting hopper (2), and not interfering with the rotation trajectory of the containing hopper (603).

9. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 1, characterized in that: The lifting assembly (10) comprises a second tube bore (1001), a second piston rod (1002), a third spring (1003), a limit seat (1004) and a connecting frame (1005), wherein the second tube bore (1001) is fixedly mounted on the inner wall of the drying box (1) via the connecting frame (1005), a second piston rod (1002) is movably inserted into the second tube bore (1001), a third spring (1003) is provided between the plug handle of the second piston rod (1002) and the second tube bore (1001), and a limit seat (1004) which can be slidably connected to the collecting hopper (2) is fixedly connected to the top end of the plug rod of the second piston rod (1002).

10. The high-efficiency screening device for the slow-release layer of a grain dryer according to claim 1, characterized in that: The current limiting component (11) comprises an electric push rod (1101), an L-shaped connecting rod (1102) and a current limiting plate (1103), wherein the electric push rod (1101) is mounted on the side wall of the bottom end of the collecting hopper (2), the telescopic end of the electric push rod (1101) is fixedly connected to the current limiting plate (1103) via the L-shaped connecting rod (1102), the bottom wall of the collecting hopper (2) is provided with a slot for accommodating the current limiting plate (1103), and the bottom wall of the collecting hopper (2) and the surface of the current limiting plate (1103) are provided with staggered grain distribution holes.

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