Automatic feeding device for controlling cleaning sieve

Abstract

The invention relates to the technical field of material screening, and discloses a control cleaning sieve automatic feeding device which comprises a storage hopper, a feeding assembly and a discharging assembly, the feeding assembly and the discharging assembly are installed at the top end and the bottom end of the storage hopper respectively, and a sieve plate and horizontal oscillation assemblies symmetrically arranged on the front outer side and the rear outer side of the sieve plate are movably inserted into the bottom of the storage hopper. During transmission, the horizontal oscillation assembly can carry the sieve plate to shuttle back and forth in an insertion opening of the storage hopper, symmetrically-distributed cross-shaped vertical frames and transmission rollers arranged at the top ends of the cross-shaped vertical frames are installed at the top of the storage hopper, swing assemblies are assembled at the bottom ends of the cross-shaped vertical frames, and a material overturning assembly is connected between the two swing assemblies; dredging assemblies moving along a sliding rail of the storage hopper are symmetrically arranged on the two sides of the top wall of the screening plate, the swing assembly can lift or push the dredging assemblies to do retracting and releasing motion along the surface of the screening plate during transmission, and meanwhile the swing assembly can carry the material turning assembly to spin to lift grains in the storage hopper. And the sieve plate in the hopper is automatically dredged, and the grain is subjected to integrated sieving operation of turning over and discharging waste.

Description

Technical Field

[0001] The invention relates to the technical field of screening materials, and more particularly to an automatic feeding device for controlling a cleaning screen. Background Art

[0002] Screening is a key process in grain harvesting. The performance of existing screening devices can basically meet the requirements of grain harvesting. However, in view of the diversity of agricultural materials, the variability and uncontrollability of the working environment, and the high-speed operation of grain combine harvesters, during screening, due to the large amount of material feed and the high moisture content of the material, conventional screening is in a static state, and it is difficult to screen most of the grains. The existing Chinese patent announcement number CN116651752B discloses a grain screening device, in which the vibration device shakes out the dust in the grains by eccentrically vibrating the movable filter plate and the feed tray. After the vibration is completed, the remaining grains are dried and blown to remove weeds and other debris, and grains of different particle sizes are screened and collected according to the size of the particles.

[0003] However, when the screen plate is blocked due to impurities, moisture or other reasons in the grains, the screening efficiency will drop significantly. In addition, the husks mixed in the grains cannot pass through the screen plate and remain in the hopper, where they will gradually accumulate and form a barrier layer, which will inevitably affect the storage and screening efficiency of the hopper, further reducing the screening effect and weakening the effective capacity of the hopper, thereby affecting the processing capacity of the entire production line.

[0004] Therefore, the present invention proposes an automatic feeding device for controlling the cleaning screen to realize turning over and removing impurities from the grains in the hopper and to dredge the dynamic screen plate to ensure the efficient grain separation capability of the equipment. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for controlling the automatic feeding of a cleaning screen to solve the problem existing in the above-mentioned background technology of how to turn over and remove impurities from the grains in the hopper and to clear the dynamic screen plate to ensure the continuous screening capacity of the equipment.

[0006] The present invention provides the following technical solutions: a device for controlling automatic feeding of a cleaning screen, comprising a storage hopper and a feeding assembly and a discharging assembly respectively installed at the top and bottom ends of the storage hopper, a sieve plate and horizontal oscillating assemblies symmetrically arranged at the front and rear outer sides of the storage hopper are movably inserted at the bottom of the storage hopper, and the horizontal oscillating assembly during transmission can carry the sieve plate to shuttle back and forth in the socket of the storage hopper, and a symmetrically distributed cross frame and a transmission roller arranged at the top end thereof are installed at the top of the storage hopper, a swing assembly is installed at the bottom end of the cross frame, and a material turning assembly is connected between the two groups of swing assemblies, and dredging assemblies moving along the storage hopper slide rails are symmetrically arranged on both sides of the top wall of the sieve plate, and the swing assembly during transmission can pull or push the dredging assembly to perform a retracting and extending movement along the surface of the sieve plate, and at the same time, the swing assembly can carry the material turning assembly to spin to lift the grains in the storage hopper; The dredging assembly comprises a slide plate slidably connected to a slide rail on the side wall of the storage hopper and telescopic dredging pieces equidistantly installed on the bottom wall thereof, wherein the number of the telescopic dredging pieces corresponds to the number of sieve holes on the surface of the sieve plate; The swing assembly includes a T-shaped transmission shaft, a second monorail pulley, a rotating wheel, a swing arm, a swivel seat and a differential, wherein the T-shaped transmission shaft is rotatably sleeved on the bottom end of the cross frame, and the surface of the T-shaped transmission shaft is sequentially equipped with the second monorail pulley and the rotating wheel from the inside to the outside, and the outer edge of the rotating wheel is provided with oppositely distributed guide rods, the sleeve handle at one end of the swing arm is rotatably sleeved on the guide rod, and the ball head at the other end of the swing arm is rotatably connected to the swivel seat, and the swivel seat is fixedly connected to the skateboard, and in addition, the T-shaped transmission shaft is connected to the connecting shaft through the differential, and the T-shaped transmission shaft, the second monorail pulley and the rotating wheel can rotate alternately in forward and reverse directions with the transmission roller, and then the two guide rods oppositely distributed on the outside of the rotating wheel can carry the swing arm to swing back and forth to pull or push the swivel seat, so that the swivel seat in the retractable movement can carry the dredging component to converge inward or expand outward.

[0007] Furthermore, the material turning assembly includes a connecting shaft, a connecting rod and a material trough, wherein one end of the connecting rod is fixedly connected to the connecting shaft, and the other end of the connecting rod is equipped with a material trough, and the differential includes a gear ring, a planetary gear and a sun gear, wherein the gear ring is fixedly installed on a cross frame, a sun gear is provided at the center of the gear ring, and planetary gears distributed circumferentially are provided 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 T-shaped transmission shaft and the assembly shaft at the end of the connecting shaft, and the T-shaped transmission shaft can carry the planetary gears to make circular motion and drive the sun gear to spin, so as to transmit torque to the sun gear, that is, the torque change and speed-up process, and then the sun gear carries the connecting shaft to rotate together, causing the material turning assembly to accelerate.

[0008] Furthermore, the telescopic clearing piece includes a tube chamber, a piston rod, a spring and a clearing head, wherein the tube chamber is fixedly installed on the bottom wall of the slide, and a piston rod is movably inserted in the tube chamber, the bottom end of the piston rod is fixedly connected to the clearing head, and a spring located in the inner cavity of the tube chamber is installed above the piston rod handle, and under the elastic force of the spring, the clearing head can telescopically poke through the sieve hole to clear the sieve plate.

[0009] Furthermore, the two guide rods have different lengths, with the longer one being twice as long as the shorter one, so that when the wheel rotates half a circle, the swing rods connected to the guide rods can cross and stagger to avoid motion interference.

[0010] Furthermore, the sieve hole is conical, and the sieve hole fits with the dredging head, so that it can smoothly enter or leave the sieve hole, and can smoothly leave after the sieve hole is dredged, thereby ensuring the continuous screening ability of the sieve plate.

[0011] Furthermore, the horizontal oscillation assembly includes a mouth-shaped connecting frame, a rack, a transmission gear and a first monorail pulley, wherein the left and right ends of the mouth-shaped connecting frame are fixedly connected to the screen plate, and a rack is installed in the middle of the top wall of the mouth-shaped connecting frame, the transmission gear is located above the rack and is coplanarly meshed with the rack, and the transmission gear and the first monorail pulley are coaxially sleeved on the same rotating shaft, one end of the rotating shaft is rotatably sleeved in the shaft seat of the side wall of the storage hopper, and the rotating shaft where the transmission gear and the first monorail pulley are located are assembled with the output shaft of the reversible motor through a coupling.

[0012] Furthermore, when the mouth-shaped connecting frame carries the screen plate and slides to the leftmost position, the wheel has rotated clockwise to the maximum deflection angle, that is, it has rotated half a circle. At this time, the rocker arm connected to it is cross-displaced, and the rotating seat carrying the dredging component has also moved inward to the middle position of the screen plate. Otherwise, it is reset to the initial position.

[0013] Furthermore, the transmission roller includes a strip transmission shaft rotatably sleeved on the top of the cross frame and a double-strand pulley fixedly sleeved on both ends of the strip transmission shaft. The double-strand pulley on the same side is connected to the first monorail pulley and the second monorail pulley respectively through a synchronous belt. The first monorail pulley rotating alternately in forward and reverse directions can drive the double-strand pulley through the synchronous belt, and then the double-strand pulley transmits the torque to the second monorail pulley through the synchronous belt, causing the T-shaped transmission shaft, the second monorail pulley and the rotating wheel to rotate alternately in forward and reverse directions with the transmission roller.

[0014] Furthermore, oppositely distributed air ducts are installed on the top of the front and rear walls of the storage hopper, and the air ducts are connected to the inner cavity of the storage hopper. The air ducts on either side are connected to the fan, so that the airflow discharged by the fan can pass through the air ducts and form a wind curtain in the inner cavity of the storage hopper, which is convenient for selecting and removing impurities from the raised grains.

[0015] Furthermore, the feeding assembly includes a feeding funnel, a bracket, a cutting plate and an electric push rod, wherein the feeding funnel is installed directly above the storage hopper through the bracket, and a cutting plate is slidably provided at the bottom of the feeding funnel, the electric push rod is assembled on the outside of the feeding funnel, and the telescopic end of the electric push rod is fixedly connected to the cutting plate, and in addition, the side wall of the feeding funnel is also equipped with an infrared sensor, which detects the amount of grain stored in the storage hopper by measuring the distance change on the surface of the grain pile.

[0016] Technical effects and advantages of the present invention: The present invention is provided with a horizontal oscillation component, a transmission roller, a swing component, a dredging component and a turning component, which is conducive to the sieve plate to shuttle back and forth in the socket on the side wall of the storage hopper. The dynamic sieve plate can make the grains with qualified particle size in the storage hopper pass through the sieve holes on its surface more quickly, thereby realizing effective screening. At the same time, the first monorail pulley that rotates alternately in forward and reverse directions can drive the double-strand pulley through the synchronous belt, and then the double-strand pulley transmits the torque to the second monorail pulley through the synchronous belt. Then, the two guide rods oppositely distributed on the outside of the rotating wheel can carry the swing rod to swing back and forth to pull or push the rotating seat, so that the rotating seat that retracts and releases can carry the dredging component to converge inward or expand outward. On the one hand, the moving telescopic dredging member can move the grains entering the sieve plate. On the one hand, the dredging head can telescopically poke through the sieve holes and dredge the sieve plate under the elastic force of the spring. At the same time, the T-shaped transmission shaft transmits the torque to the differential, which is then transmitted to the connecting shaft after the torque conversion and speed increase of the differential, so that the turning assembly can accelerate in the same direction. The rotating material chute can scoop up the grains in the storage hopper and throw them out at the highest point, so that the grains are circulated and then fall down. In the process of falling, the grains will pass through the wind curtain, so that the husks mixed in the grains can be discharged with the airflow, so as to remove impurities and discharge waste from the grains, and facilitate the subsequent sieve plate to screen them, so as to realize the integrated screening operation of automatically dredging the sieve plate in the hopper, turning the grains and discharging waste. 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 after removing the feed assembly and discharge funnel.

[0020] Figure 4 It is a schematic diagram of the connection structure of the storage hopper, screen plate, horizontal oscillation component, transmission roller and dredging component of the present invention.

[0021] Figure 5It is a schematic diagram of the connection structure of the storage hopper, screen plate, cross stand, transmission roller, swing assembly and dredging assembly of the present invention.

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0023] Figure 7 It is a schematic diagram of the connection structure of the cross stand, transmission roller, swing assembly and material turning assembly of the present invention.

[0024] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point B in the middle.

[0025] Fig. 9 It is a schematic diagram of the structure of the feed assembly of the present invention.

[0026] The accompanying drawings are marked as follows: 1. storage hopper; 2. feeding assembly; 201. feeding funnel; 202. bracket; 203. material cutting plate; 204. electric push rod; 3. discharge assembly; 301. discharge funnel; 302. anti-leakage side cover; 4. sieve plate; 5. horizontal oscillation assembly; 501. mouth-shaped connecting frame; 502. rack; 503. transmission gear; 504. first monorail pulley; 6. cross stand; 7. transmission roller; 701. strip transmission shaft; 702. double-strand pulley; 8. swing assembly; 801. T-shaped transmission shaft; 802, second monorail pulley; 803, rotating wheel; 804, rocker arm; 805, swivel seat; 806, differential; 8061, gear ring; 8062, planetary gear; 8063, sun gear; 9, dredging assembly; 901, slide plate; 902, telescopic dredging piece; 9021, pipe bore; 9022, piston rod; 9023, spring; 9024, dredging head; 10, material turning assembly; 1001, connecting shaft; 1002, connecting rod; 1003, material trough; 11, reversible motor; 12, air duct. 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 merely illustrative. The automatic feeding device for controlling the cleaning screen 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 1-9The present invention provides a controlled automatic feeding device for a cleaning screen, comprising a storage hopper 1 and a feeding assembly 2 and a discharging assembly 3 respectively installed at the top and bottom ends of the storage hopper 1, a sieve plate 4 and a horizontal oscillating assembly 5 symmetrically arranged on the front and rear outer sides thereof are movably inserted at the bottom of the storage hopper 1, and the horizontal oscillating assembly 5 during transmission can carry the sieve plate 4 to shuttle back and forth in the socket of the storage hopper 1, and a symmetrically distributed cross frame 6 and a transmission roller 7 arranged at the top end thereof are installed on the top of the storage hopper 1, a swing assembly 8 is installed at the bottom end of the cross frame 6, and a material turning assembly 10 is connected between the two groups of swing assemblies 8, and dredging assemblies 9 that can move along the slide rail of the storage hopper 1 are symmetrically arranged on both sides of the top wall of the sieve plate 4, and the swing assembly 8 during transmission can pull or push the dredging assembly 9 to perform a retracting and extending movement along the surface of the sieve plate 4, and at the same time, the swing assembly 8 can carry the material turning assembly 10 to spin, so as to lift the grains in the storage hopper 1.

[0029] In this embodiment, it should be specifically explained that oppositely distributed air ducts 12 are installed on the top of the front and rear walls of the storage hopper 1, and the air ducts 12 are connected to the inner cavity of the storage hopper 1. The air ducts 12 on either side can be connected to the fan, so that the airflow discharged by the fan can pass through the air ducts 12 and form an air curtain in the inner cavity of the storage hopper 1, which is convenient for selecting and removing impurities from the raised grains; The feeding assembly 2 includes a feeding hopper 201, a bracket 202, a material cutting plate 203 and an electric push rod 204, wherein the feeding hopper 201 is installed directly above the storage hopper 1 through the bracket 202, and a material cutting plate 203 is slidably provided at the bottom of the feeding hopper 201, and the electric push rod 204 is assembled on the outside of the feeding hopper 201, and the telescopic end of the electric push rod 204 is fixedly connected to the material cutting plate 203. In addition, the side wall of the feeding hopper 201 is also equipped with an infrared sensor, which detects the grain storage amount in the storage hopper 1 by measuring the distance change on the surface of the grain pile, and determines the grain storage amount in the storage hopper 1 by analyzing the measured distance, and then performs corresponding regulation of the material cutting plate 203, that is, realizes opening the compartment to discharge the material or closing the compartment to stop the material; The storage hopper 1 is provided with a control module for receiving the determination information output by the sensor and outputting control instructions to the actuator through analysis and processing; The discharge assembly 3 includes a discharge funnel 301 installed on the bottom wall of the storage hopper 1 and an anti-leakage side cover 302 assembled on the bottom of the side wall of the storage hopper 1, wherein the discharge funnel 301 is communicated with the storage hopper 1, and the discharge funnel 301 can receive the grains screened from the sieve plate 4 and introduce them into the collecting device, and the anti-leakage side cover 302 can be communicated with the storage hopper 1 through the opening of the side wall of the storage hopper 1, so that when the sieve plate 4 is just pulled out of the inner cavity of the storage hopper 1, the grains that have not completely fallen out of the sieve holes can fall into the anti-leakage side cover 302, and then flow back to the discharge funnel 301 through the anti-leakage side cover 302, forming a collection transition zone, thereby reducing the probability of grain spilling.

[0030] Reference Figure 3-8The horizontal oscillation component 5 includes a mouth-shaped connecting frame 501, a rack 502, a transmission gear 503 and a first monorail pulley 504, wherein the left and right ends of the mouth-shaped connecting frame 501 are fixedly connected to the screen plate 4, and a rack 502 is installed in the middle of the top wall of the mouth-shaped connecting frame 501, and the transmission gear 503 is located above the rack 502 and meshes with it coplanarly, and the transmission gear 503 and the first monorail pulley 504 are coaxially sleeved on the same rotating shaft, and one end of the rotating shaft can be rotatably sleeved in the shaft seat of the side wall of the storage hopper 1, and the transmission gear 503 that rotates alternately forward and reverse can drive the rack 502 meshing with it to move back and forth, and then the rack 502 can carry the sieve plate 4 back and forth in the socket of the side wall of the storage hopper 1 by means of the mouth-shaped connecting frame 501, so as to realize effective screening of grains; The rotating shaft where the transmission gear 503 and the first monorail pulley 504 are located can be fixedly sleeved with the output shaft of the reversible motor 11 through a coupling. The base of the reversible motor 11 is installed on the outer wall of the storage hopper 1. The reversible motor 11 rotates forward for a period of time and then rotates reversely for another period of time, providing a transmission force for periodic alternating rotation in forward and reverse directions. The transmission roller 7 includes a strip transmission shaft 701 rotatably sleeved on the top of the cross frame 6 and double-strand pulleys 702 fixedly sleeved on both ends of the strip transmission shaft 701. The double-strand pulley 702 on the same side is connected to the first monorail pulley 504 and the second monorail pulley 802 through synchronous belts. The first monorail pulley 504 that rotates alternately in forward and reverse directions can drive the double-strand pulley 702 through the synchronous belt, and then the double-strand pulley 702 transmits the torque to the second monorail pulley 802 through the synchronous belt, so that the T-shaped transmission shaft 801, the second monorail pulley 802 and the rotating wheel 803 rotate alternately in forward and reverse directions along with the transmission roller 7. The swing assembly 8 includes a T-shaped transmission shaft 801, a second monorail pulley 802, a rotating wheel 803, a swing rod 804, a rotating seat 805 and a differential 806, wherein the T-shaped transmission shaft 801 is rotatably sleeved on the bottom end of the cross frame 6, and the surface of the T-shaped transmission shaft 801 is sequentially equipped with the second monorail pulley 802 and the rotating wheel 803 from the inside to the outside, and the outer edge of the rotating wheel 803 is provided with left and right oppositely distributed guide rods, the sleeve handle at one end of the swing rod 804 is rotatably sleeved with the guide rod, and the ball head at the other end of the swing rod 804 is rotatably connected to the rotating seat 805, and the rotating seat 805 is fixedly connected to the slide plate 901, and the T-shaped transmission shaft 801 is connected to the connecting shaft 1001 through the differential 806; The differential 806 includes a gear ring 8061, planetary gears 8062 and a sun gear 8063, wherein the gear ring 8061 is fixedly mounted on the cross frame 6, a sun gear 8063 is arranged at the center of the gear ring 8061, planetary gears 8062 distributed circumferentially are arranged between the gear ring 8061 and the sun gear 8063, the planetary gears 8062 are meshed with the gear ring 8061 and the sun gear 8063 at the same time, the planetary gears 8062 and the sun gear 8063 are respectively connected to the assembly shafts at the ends of the T-shaped transmission shaft 801 and the connecting shaft 1001, the T-shaped transmission shaft 801 can carry the planetary gears 8062 to make circular motion and drive the sun gear 8063 to spin, so as to transmit the torque to the sun gear 8063, i.e., the torque conversion and speed-up process, and then the sun gear 8063 carries the connecting shaft 1001 to rotate together, so as to accelerate the rotation of the material turning component 10; The material turning assembly 10 includes a connecting shaft 1001, a connecting rod 1002 and a material trough 1003, wherein one end of the connecting rod 1002 is fixedly connected to the connecting shaft 1001, and the other end of the connecting rod 1002 is equipped with the material trough 1003. The material turning assembly 10 is accelerated and rotated by the differential 806, and the rotating material trough 1003 can pick up the grains in the storage hopper 1 and throw them out at the highest point, so that the grains are cyclically lifted and then fall down to carry out material lifting; The dredging assembly 9 includes a slide plate 901 slidably connected to the slide rail of the side wall of the storage hopper 1 and a telescopic dredging member 902 equidistantly installed on the bottom wall thereof. The number of the telescopic dredging members 902 corresponds to the number of sieve holes on the surface of the sieve plate 4. The telescopic dredging member 902 comprises a tube chamber 9021, a piston rod 9022, a spring 9023 and a dredging head 9024, wherein the tube chamber 9021 is fixedly mounted on the bottom wall of the slide plate 901, and the piston rod 9022 is movably inserted in the tube chamber 9021, the plug rod bottom end of the piston rod 9022 is fixedly connected to the dredging head 9024, and the plug handle of the piston rod 9022 is equipped with a spring 9023 located in the inner cavity of the tube chamber 9021, and the rotating wheel 803 is rotated alternately forward and reversely. When the wheel 803 moves, the two guide rods opposite to each other on the outside can carry the rocker arm 804 to swing back and forth to pull or push the rotating seat 805, so that the rotating seat 805 in the retractable movement can carry the dredging component 9 to converge inward or expand outward. On the one hand, the movable telescopic dredging piece 902 can disperse and guide the grains entering the upper layer of the sieve plate 4. On the other hand, under the elastic force of the spring 9023, the dredging head 9024 can telescopically poke through the sieve holes to dredge the sieve plate 4.

[0031] In this embodiment, it should be specifically explained that the alternating forward and reverse rotation is a rotational motion mode in which the device continuously switches between clockwise and counterclockwise directions; The two guide rods have different lengths, with the longer one being twice as long as the shorter one, so that when the rotating wheel 803 rotates half a circle, the swing rod 804 connected to the guide rods can cross and stagger to avoid motion interference; When the mouth-shaped connecting frame 501 carries the sieve plate 4 and slides to the leftmost position, the rotating wheel 803 has rotated clockwise to the maximum deflection angle, that is, it rotates half a circle. At this time, the swing rod 804 connected to it is cross-displaced, and the rotating seat 805 carrying the dredging component 9 has also moved inward to the middle position of the sieve plate 4. Otherwise, it returns to the initial position. The lowest point of rotation of the material trough 1003 is at least above the sliding track of the slide plate 901 to avoid motion interference between the two. The sieve hole is conical, and the sieve hole fits with the dredging head 9024, so that it can smoothly enter or leave the sieve hole, and can smoothly leave after the sieve hole is dredged, thereby ensuring the continuous screening ability of the sieve plate 4.

[0032] Working principle of the present invention: The device is started, and the output shaft of the reversible motor 11 drives the transmission gear 503 and the first monorail pulley 504 connected thereto to rotate alternately in the forward and reverse directions periodically through the coupling. The transmission gear 503 rotating alternately in the forward and reverse directions can drive the rack 502 meshing therewith to move back and forth, and then the rack 502 can carry the sieve plate 4 to shuttle back and forth in the socket on the side wall of the storage hopper 1 by means of the mouth-shaped connecting frame 501. The dynamic sieve plate 4 can make the grains with qualified particle size in the storage hopper 1 pass through the sieve holes on its surface more quickly, and then be introduced into the collection device by the discharge funnel 301. The husks mixed in the grains cannot pass through the sieve plate 4 and are retained in the storage hopper 1. At the same time, the first monorail pulley 504 rotating alternately in the forward and reverse directions can drive the double-strand pulley 702 through the synchronous belt, so that the transmission roller 7 rotates in the same direction, and then the double-strand pulley 702 transmits the torque to the second monorail pulley 80 through the synchronous belt. 2, causing the T-shaped transmission shaft 801, the second monorail pulley 802 and the rotating wheel 803 to rotate alternately in the positive and reverse directions along with the transmission roller 7, and then the two guide rods oppositely distributed outside the rotating wheel 803 can carry the swing rod 804 to swing back and forth to pull or push the rotating seat 805, so that the rotating seat 805 in the retractable movement can carry the dredging component 9 to converge inward or expand outward, but the slide plate 901 is limited in the slide rail of the storage hopper 1, so that the telescopic dredging member 902 can only slide on the surface of the sieve plate 4, on the one hand, the moving telescopic dredging member 902 can disperse and dredge the grains entering the upper layer of the sieve plate 4, on the other hand, the moving piston rod 9022 carries the dredging head 9024 to move against the top wall of the sieve plate 4, and under the elastic force of the spring 9023, the dredging head 9024 can telescopically poke through the sieve holes to dredge the sieve plate 4 to avoid the sieve holes being blocked and losing the screening ability; At the same time, the T-shaped transmission shaft 801 transmits the torque to the differential 806, which is then transmitted to the connecting shaft 1001 after the torque conversion and speed increase of the differential 806, so that the turning assembly 10 accelerates to rotate in the same direction, and the rotating material trough 1003 can pick up the grains in the storage hopper 1 and throw them out at the highest point, so that the grains are circulated and then fall down. In the process of falling, the grains will pass through the wind curtain, so that the husks mixed in the grains can be discharged with the air flow, so as to remove impurities and waste from the grains, improve the purity of the grains, and facilitate the subsequent screening of the sieve plate 4; The infrared sensor detects the grain storage amount in the storage hopper 1 by measuring the distance change on the surface of the grain pile. When the measured distance reaches the preset distance peak, it determines that the grain storage amount in the storage hopper 1 is insufficient. The infrared sensor outputs the determination information to the control module. The control module receives the determination information and outputs the control instruction to the electric push rod 204. The telescopic end of the electric push rod 204 is controlled to drive the material cutting plate 203 connected thereto to move outward, and the feed funnel 201 opens the hatch to discharge the material to load the storage hopper 1. Conversely, the telescopic end of the electric push rod 204 is controlled to drive the material cutting plate 203 to retract and reset, and the feed funnel 201 closes the hatch to prevent excessive overflow of grain or no-load operation, thereby achieving precise control and continuously ensuring the screening capacity.

[0033] 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. A device for controlling automatic feeding of a cleaning screen, comprising a storage hopper (1) and a feeding assembly (2) and a discharging assembly (3) respectively mounted at the top and bottom ends of the storage hopper (1), characterized in that: The bottom of the storage hopper (1) is movably connected with a sieve plate (4) and a horizontal oscillating assembly (5) symmetrically arranged on the front and rear outer sides thereof. During transmission, the horizontal oscillating assembly (5) can carry the sieve plate (4) to shuttle back and forth in the socket of the storage hopper (1). The top of the storage hopper (1) is equipped with a symmetrically distributed cross frame (6) and a transmission roller (7) arranged at the top thereof. The bottom end of the cross frame (6) is equipped with a swing assembly (8), and a material turning assembly (10) is connected between the two sets of swing assemblies (8). The top walls of the sieve plate (4) are symmetrically provided with dredging assemblies (9) that move along the slide rails of the storage hopper (1). During transmission, the swing assembly (8) can pull or push the dredging assembly (9) to perform a retracting and extending movement along the surface of the sieve plate (4). At the same time, the swing assembly (8) can carry the material turning assembly (10) to rotate to lift the grains in the storage hopper (1); The dredging assembly (9) comprises a slide plate (901) slidably connected to a slide rail on the side wall of the storage hopper (1) and telescopic dredging members (902) equidistantly installed on the bottom wall thereof, wherein the number of the telescopic dredging members (902) provided corresponds to the number of sieve holes on the surface of the sieve plate (4); The swing assembly (8) comprises a T-shaped transmission shaft (801), a second monorail pulley (802), a rotating wheel (803), a swing rod (804), a rotating seat (805) and a differential (806), wherein the T-shaped transmission shaft (801) is rotatably sleeved on the bottom end of the cross frame (6), the surface of the T-shaped transmission shaft (801) is sequentially equipped with the second monorail pulley (802) and the rotating wheel (803) from the inside to the outside, the outer edge of the rotating wheel (803) is provided with guide rods distributed opposite to each other, the sleeve handle at one end of the swing rod (804) is rotatably sleeved with the guide rod, and the ball head at the other end of the swing rod (804) is rotatably sleeved with the rotating wheel. The rotating seat (805) is rotatably connected, and the rotating seat (805) is fixedly connected to the slide plate (901). In addition, the T-shaped transmission shaft (801) is connected to the connecting shaft (1001) through a differential (806). The T-shaped transmission shaft (801), the second monorail pulley (802) and the rotating wheel (803) can rotate alternately in positive and negative directions along with the transmission roller (7), and then two guide rods oppositely distributed outside the rotating wheel (803) can carry the swing rod (804) to swing back and forth to pull or push the rotating seat (805), so that the rotating seat (805) that is in a retractable motion can carry the dredging component (9) to aggregate inward or expand outward.

2. The automatic feeding device for controlling the cleaning screen according to claim 1 is characterized in that: The material turning assembly (10) comprises a connecting shaft (1001), a connecting rod (1002) and a material trough (1003), wherein one end of the connecting rod (1002) is fixedly connected to the connecting shaft (1001), and the other end of the connecting rod (1002) is equipped with a material trough (1003), and the differential (806) comprises a gear ring (8061), a planetary gear (8062) and a sun gear (8063), wherein the gear ring (8061) is fixedly mounted on a cross stand (6), a sun gear (8063) is provided at the center of the gear ring (8061), and a gear wheel (8063) is provided between the gear ring (8061) and the sun gear (8063). There are planetary gears (8062) distributed around the circumference, and the planetary gears (8062) are meshed with the gear ring (8061) and the sun gear (8063) at the same time. The planetary gears (8062) and the sun gear (8063) are respectively connected to the assembly shafts at the ends of the T-shaped transmission shaft (801) and the connecting shaft (1001). The T-shaped transmission shaft (801) can carry the planetary gears (8062) to make circular motion and drive the sun gear (8063) to spin, so as to transmit torque to the sun gear (8063), that is, the torque conversion and speed-up process. Then, the sun gear (8063) carries the connecting shaft (1001) to rotate, causing the turning assembly (10) to rotate faster.

3. The automatic feeding device for controlling the cleaning screen according to claim 1 is characterized in that: The telescopic unclogging member (902) comprises a tube bore (9021), a piston rod (9022), a spring (9023) and an unclogging head (9024), wherein the tube bore (9021) is fixedly mounted on the bottom wall of the slide plate (901), and a piston rod (9022) is movably inserted in the tube bore (9021), the bottom end of the plug rod of the piston rod (9022) is fixedly connected to the unclogging head (9024), and a spring (9023) located in the inner cavity of the tube bore (9021) is arranged above the plug handle of the piston rod (9022), and under the elastic force of the spring (9023), the unclogging head (9024) can telescopically poke through the sieve hole to unblock the sieve plate (4).

4. The automatic feeding device for controlling the cleaning screen according to claim 1 is characterized in that: The two guide rods have different lengths, with the longer one being twice as long as the shorter one, so that when the rotating wheel (803) rotates half a circle, the swing rods (804) connected to the guide rods can cross and misalign to avoid motion interference.

5. The automatic feeding device for controlling the cleaning screen according to claim 3 is characterized in that: The sieve hole is conical, and the sieve hole fits with the dredging head (9024), so that it can smoothly enter or leave the sieve hole, and can smoothly leave after the sieve hole is dredged, thereby ensuring the continuous screening ability of the sieve plate (4).

6. The automatic feeding device for controlling the cleaning screen according to claim 1, characterized in that: The horizontal oscillation assembly (5) comprises a mouth-shaped connecting frame (501), a rack (502), a transmission gear (503) and a first monorail pulley (504), wherein the left and right ends of the mouth-shaped connecting frame (501) are fixedly connected to the screen plate (4), and the middle part of the top wall of the mouth-shaped connecting frame (501) is equipped with a rack (502), the transmission gear (503) is located above the rack (502) and is coplanarly meshed with the rack, and the transmission gear (503) and the first monorail pulley (504) are coaxially sleeved on the same rotating shaft, one end of the rotating shaft is rotatably sleeved in the shaft seat of the side wall of the storage hopper (1), and the rotating shaft where the transmission gear (503) and the first monorail pulley (504) are located is assembled with the output shaft of the reversible motor (11) through a coupling.

7. The automatic feeding device for controlling the cleaning screen according to claim 6, characterized in that: When the mouth-shaped connecting frame (501) carries the sieve plate (4) and slides to the leftmost position, the rotating wheel (803) has rotated clockwise to the maximum deflection angle, that is, it has rotated half a circle. At this time, the swing rod (804) connected to it is cross-displaced, and the rotating seat (805) carrying the dredging component (9) has also closed inwardly to the middle position of the sieve plate (4). Otherwise, it is reset to the initial position.

8. The automatic feeding device for controlling the cleaning screen according to claim 6, characterized in that: The transmission roller (7) comprises a strip transmission shaft (701) rotatably sleeved on the top of the cross frame (6) and double-strand pulleys (702) fixedly sleeved on both ends of the strip transmission shaft (701); the double-strand pulleys (702) on the same side are respectively connected to the first monorail pulley (504) and the second monorail pulley (802) through synchronous belts; the first monorail pulley (504) rotating in a forward and reverse alternating manner can drive the double-strand pulley (702) through the synchronous belt, and then the double-strand pulley (702) transmits torque to the second monorail pulley (802) through the synchronous belt, so that the T-shaped transmission shaft (801), the second monorail pulley (802) and the rotating wheel (803) rotate in a forward and reverse alternating manner along with the transmission roller (7).

9. The automatic feeding device for controlling a cleaning screen according to claim 1, characterized in that: Oppositely distributed air ducts (12) are installed at the top of the front and rear walls of the storage hopper (1), and the air ducts (12) are connected to the inner cavity of the storage hopper (1). The air ducts (12) on either side are connected to the fan, so that the airflow discharged by the fan can pass through the air ducts (12) and form an air curtain in the inner cavity of the storage hopper (1), thereby facilitating the selection and removal of impurities from the raised grains.

10. The automatic feeding device for controlling a cleaning screen according to claim 1, characterized in that: The feeding assembly (2) comprises a feeding hopper (201), a bracket (202), a material cutting plate (203) and an electric push rod (204), wherein the feeding hopper (201) is mounted directly above the storage hopper (1) via the bracket (202), and a material cutting plate (203) is slidably provided at the bottom of the feeding hopper (201), the electric push rod (204) is mounted on the outside of the feeding hopper (201), and the telescopic end of the electric push rod (204) is fixedly connected to the material cutting plate (203), and the side wall of the feeding hopper (201) is also equipped with an infrared sensor, which detects the amount of grain stored in the storage hopper (1) by measuring the distance change on the surface of the grain pile.

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