A rice impurity removing and screening device and a method of using the same

Abstract

The application discloses a rice impurity removing and screening device and a use method thereof, and relates to the technical field of grain and oil processing equipment, which comprises a box body, a screening assembly, a spectrum sensor, a discharging plate, an adsorption and impurity removing assembly and a cleaning assembly. The screening assembly is fixedly installed on the top of the box body through a support frame. The discharging plate is rotatably installed on one side in the box body. The adsorption and impurity removing assembly is installed on the discharging plate and used for adsorbing impurities in rice. A baffle is rotatably installed on the bottom of the side of the discharging plate close to a hydraulic telescopic rod. The spectrum sensor is fixedly installed on the side of the box body close to the baffle and used for collecting the spectrum signal of the rice sliding off the discharging plate and sending the signal to a control module. Through cooperation of the screening assembly and the adsorption and impurity removing assembly, the large-particle impurities in the rice are cleaned first, and then the adsorption and impurity removing assembly is used for electrostatic adsorption and cleaning circulation, so that the micro-plastic substances in the rice can be cleaned.

Description

Technical Field

[0001] This invention relates to the field of grain and oil processing equipment technology, specifically to a rice impurity removal and screening device and its usage method. Background Technology

[0002] Rice is an essential part of daily life. During processing and transportation, rice is typically packaged in plastic bags. By the time it reaches consumers, friction and plastic breakage during production can introduce microplastics into the rice. Microplastics impair digestion and absorption. Once ingested, microplastics cannot be digested and absorbed, leading to malnutrition, impaired immune function, and ultimately, stunted growth or death. Microplastics also release organic monomers and toxic additives during migration and transformation. These toxic additives include various plasticizers (such as bisphenol A and phthalates), antibacterial agents, and flame retardants. These additives have been shown to affect endocrine function, induce genetic abnormalities, and harm reproduction and development.

[0003] In the current technology, it is unavoidable for rice to be transported through plastic products. Current screening devices can only remove particulate impurities from rice, but cannot remove tiny microplastics, so this problem urgently needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to provide a rice impurity removal and screening device and its usage method. By combining a screening component and an adsorption impurity removal component, large particles of impurities in the rice are first cleaned, and then electrostatic adsorption and cleaning are performed by the adsorption impurity removal component in a cycle, thereby removing microplastics from the rice and solving the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A rice impurity removal and screening device includes a housing, a screening component, a spectral sensor, a feeding plate, an adsorption impurity removal component, and a cleaning component. The screening component is fixedly installed on the top of the housing via a support frame. A feeding plate is rotatably installed on one side of the housing, and an adsorption impurity removal component is installed on the feeding plate to adsorb impurities in the rice. A hydraulic telescopic rod is rotatably installed on the other side of the feeding plate and is rotatably mounted on the inner side wall of the housing. A baffle is rotatably installed on the bottom of the feeding plate near the hydraulic telescopic rod. A spectral sensor is fixedly installed on the housing near the baffle. The spectral sensor is used to collect the spectral signal of rice sliding off the feeding plate and send the signal to a control module. The control module is installed at the bottom of the housing. A guide plate is installed at an angle at the bottom of the housing. A door is provided on the bottom of the housing away from the spectral sensor.

[0007] Furthermore, the screening assembly includes a circular tank, a feeding tray, a screen, a first motor, and a centrifugal fan. A conical feeding hopper is fixedly installed at the bottom of the circular tank, and a feeding tray is installed at the bottom of the conical feeding hopper. The circular tank, the conical feeding hopper, and the feeding tray are interconnected. The conical feeding hopper is fixedly installed at the top of the housing, and the circular tank is fixed at the top of the housing under the support of a support frame. An annular screen is installed between the conical feeding hopper and the top of the circular tank. Several sets of feeding holes are provided at the top of the circular tank, and an annular retaining ring is installed at the top edge of the circular tank. The feeding holes are located inside the screen. A first motor is installed at the top of the circular tank, and a rotating shaft is installed at the output end of the first motor. Inclined upward turbulence blades are installed circumferentially on the rotating shaft. A centrifugal fan is installed at the top side of the circular tank, and an air inlet pipe communicating with the circular tank is installed at an angle at the bottom side of the circular tank. The air inlet pipe and the centrifugal fan are symmetrically arranged on the horizontal plane relative to the extension direction of the feeding tray. Several sets of discharge holes are provided at the bottom of the feeding tray.

[0008] Furthermore, the outer side of the deflector blade is covered with a flexible cladding.

[0009] Furthermore, the adsorption and impurity removal component includes a conveyor belt, a flexible adsorption plate, and a second motor. A pair of second motors are installed at the bottom of the feeding plate. Several sets of guide grooves are equidistantly arranged on the top of the feeding plate. A conveyor belt is slidably fitted in the guide grooves. The conveyor belt is a flexible belt with its ends connected. The surface of the conveyor belt is coated with an antistatic coating. The thickness of the conveyor belt is the same as the depth of the guide grooves. Several sets of flexible adsorption plates, which serve as electrostatic capacitors, are equidistantly embedded in the conveyor belt. A drive shaft is installed at the output end of the second motor. Several sets of cylindrical sleeves are installed on the drive shaft. The cylindrical sleeves are driven and engaged with the conveyor belt. The two second motors rotate in opposite directions. Adjacent conveyor belts are driven and engaged with the cylindrical sleeves on both sides. Several sets of electrostatic generators and cleaning components are installed at the bottom of the feeding plate. The conveyor belt passes through the electrostatic generators and cleaning components sequentially from the direction closest to the cylindrical sleeves.

[0010] Furthermore, the cleaning assembly includes a sealed box, an atomizing nozzle, a pressure plate, a spray nozzle, and a filter screen. The sealed box has square grooves on both sides, with a conveyor belt running through the space between them. A flexible support block is located at the bottom of the sealed box, and several sets of ball bearings are embedded in the flexible support block. The ball bearings slide in conjunction with the conveyor belt. A contact block is located at the top of the square groove on the side where the conveyor belt enters the sealed box, and this contact block is connected to a grounding wire module, which is installed inside the housing. A filter box is installed inside the sealed box near the contact block, and an air inlet is located at the bottom of the filter box. A through groove is provided on the sealed box, and an mounting plate is slidably installed within the through groove. A circulating air pump is fixedly installed on the sealed box with screws. Several sets of air holes are provided on the mounting plate, and a filter screen is installed on the mounting plate. A circulating air pump and a spray nozzle are installed inside the sealed box. The output end of the circulating air pump is connected to the spray nozzle, and the input end of the spray nozzle is connected to the bottom side wall of the filter box via an air supply pipe. A baffle is installed at an angle upwards on the side of the air inlet away from the inner wall of the sealed box.

[0011] Furthermore, a fixing rod is installed inside the sealed box, and a pressure plate is rotatably installed at the bottom of the fixing rod. A velvet cloth is attached to the bottom of the pressure plate, and the pressure plate is in contact with the flexible adsorption plate. Springs are connected between the two sides of the pressure plate and the fixing rod. A water storage box, an atomizing nozzle, and a humidity sensor are installed at the top inside the sealed box. The humidity sensor is used to collect the humidity signal inside the sealed box and send the signal to the control module.

[0012] Furthermore, the control module includes a signal processing module, a signal receiving module, an adjustment feedback module, and a signal transmitting module. The signal receiving module receives signals from the spectral sensor and the humidity sensor and transmits the signals to the signal processing module. The signal processing module stores a spectral signal analysis program and a humidity setpoint. After processing the spectral signal, the signal processing module sends the analysis results to the signal transmitting module. The signal transmitting module sends the humidity signal, spectral signal information, and analysis results received by the signal processing module to the terminal control center.

[0013] A method for using a rice impurity removal and screening device includes the following specific steps:

[0014] Make preliminary settings for the equipment parameters, set the humidity setting to 50%RH, download the spectral signal analysis program to the equipment and run it;

[0015] Preliminary screening and impurity removal;

[0016] Electrostatic adsorption for impurity removal involves applying static electricity to a flexible adsorption plate, adsorbing impurities, removing static electricity, and cleaning. After cleaning, the process of applying static electricity, adsorbing impurities, removing static electricity, and cleaning is repeated to adsorb small particulate impurities in rice.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The present invention provides a rice impurity removal and screening device and its usage method. By combining a screening component and an adsorption impurity removal component, large particles of impurities in the rice are first cleaned, and then electrostatic adsorption and cleaning are performed by the adsorption impurity removal component in a cycle to remove microplastics from the rice. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the rice impurity removal and screening device in this invention;

[0020] Figure 2 This is a cross-sectional view of the screening component in this invention;

[0021] Figure 3 This is a three-dimensional view of the screening component in this invention;

[0022] Figure 4 This is a schematic diagram of the adsorption and impurity removal component in this invention;

[0023] Figure 5 This is a schematic diagram of the cleaning component structure in this invention;

[0024] Figure 6 This is a schematic diagram of the structure of region A in this invention;

[0025] Figure 7 This is a schematic diagram of the control module in this invention.

[0026] In the diagram: 1. Box body; 11. Support frame; 12. Box door; 13. Hydraulic telescopic rod; 14. Baffle; 15. Grounding wire module; 2. Screening assembly; 21. Circular tank; 22. Conical hopper; 23. Feeding tray; 24. Screen; 25. First motor; 26. Annular retaining ring; 27. Centrifugal fan; 28. Air inlet pipe; 29. ​​Baffle blades; 3. Spectral sensor; 4. Control module; 41. Signal processing module; 42. Signal receiving module; 43. Adjustment feedback module; 44. Signal transmitting module; 5. Feeding plate; 51. Conveyor belt; 52. Flexible adsorption plate; 53. Second motor; 54. Drive shaft; 55. Cylindrical sleeve; 56. Electrostatic generator; 6. Cleaning assembly; 61. Sealing box; 62. Flexible support block; 63. Water storage box; 64. Atomizing nozzle; 65. Humidity sensor; 66. Pressure plate; 67. Fixing rod; 68. Spring; 69. Contact block; 7. Through slot; 71. Circulating air pump; 72. Nozzle; 73. Air supply pipe; 74. Filter box; 75. Air inlet; 76. Mounting plate; 77. Filter screen; 78. Baffle plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1 to 4 As shown, a rice impurity removal and screening device includes a housing 1, a screening component 2, a spectral sensor 3, a feeding plate 5, an adsorption impurity removal component, and a cleaning component 6. The screening component 2 is fixedly installed on the top of the housing 1 via a support frame 11. Rice containing impurities is added through the top of the screening component 2. The screening component 2 performs preliminary treatment on large particles of impurities in the rice before guiding the rice into the housing 1. The feeding plate 5 is rotatably installed on one side of the housing 1, and the adsorption impurity removal component is installed on the feeding plate 5 to adsorb impurities in the rice. A hydraulic telescopic rod 13 is rotatably installed on the other side of the feeding plate 5, and is rotatably mounted on the inner wall of the housing 1. After falling onto the feeding plate 5, the rice falls along the feeding plate 5 under the action of gravity. By adjusting the extension length of the hydraulic telescopic rod 13, the rotation angle of the feeding plate 5 within the housing 1 can be adjusted, thereby controlling the residence time of the rice on the feeding plate 5. The longer the retention time, the better the adsorption and impurity removal effect. A baffle 14 is rotatably installed on the bottom of the feeding plate 5 near the hydraulic telescopic rod 13. Under the action of gravity, the baffle 14 always remains parallel to the side wall of the box 1. After the rice slides off the feeding plate 5, it falls through the baffle 14 to the bottom of the box 1. A spectral sensor 3 is fixedly installed on the side of the box 1 near the baffle 14. The spectral sensor 3 is used to collect the spectral signal of the rice sliding off the feeding plate 5 and send the signal to the control module 4. The control module 4 is installed at the bottom of the box 1. The rotation speed of the adsorption and impurity removal component and the extension length of the hydraulic telescopic rod 13 are adjusted through the feedback of the control module 4. A guide plate is installed at an incline at the bottom of the box 1, which allows the detected rice to slide quickly to the side of the box 1 away from the spectral sensor 3. A box door 12 is provided at the bottom of the side of the box 1 away from the spectral sensor 3. The rice that has been screened and removed can be taken out through the box door 12.

[0029] The screening assembly 2 includes a circular tank 21, a feeding tray 23, a screen 24, a first motor 25, and a centrifugal fan 27. A conical feeding hopper 22 is fixedly installed at the bottom of the circular tank 21, and a feeding tray 23 is installed at the bottom of the conical feeding hopper 22. The circular tank 21, the conical feeding hopper 22, and the feeding tray 23 are interconnected. The conical feeding hopper 22 is fixedly installed at the top of the housing 1, and the circular tank 21 is fixedly installed at the top of the housing 1 under the support of the support frame 11, which can ensure that the screening assembly 2 remains stable during operation. An annular screen 24 is installed between the conical feeding hopper 22 and the top of the circular tank 21. Several sets of feeding holes are provided at the top of the circular tank 21, and an annular baffle ring 26 is installed at the top edge of the circular tank 21. Rice enters the circular tank 21 through the feeding holes under the guiding action of the annular baffle ring 26. The feeding holes are located inside the screen 24. A first motor 25 is installed on the top of the tank 21. A rotating shaft is installed at the output end of the first motor 25. An upwardly inclined baffle 29 is installed on the rotating shaft. A centrifugal fan 27 is installed on the top side of the circular tank 21. An air inlet pipe 28 communicating with the circular tank 21 is installed at an angle on the bottom side of the circular tank 21. The air inlet pipe 28 and the centrifugal fan 27 are symmetrically arranged on the horizontal plane relative to the extension direction of the feeding tray 23. Several sets of dropping holes are provided at the bottom of the feeding tray 23. The first motor 25 drives the baffle 29 to rotate, causing the rice and impurities to move rapidly to all sides within the screen 24. The centrifugal fan 27 draws out the air from the circular tank 21. The air enters the circular tank 21 through the air inlet pipe 28. The centrifugal fan 27 and the air inlet pipe 28 form an air duct between the circular tank 21 and the screen 24, accelerating the discharge of impurities in the rice through the screen 24.

[0030] The screen mesh 24 has a mesh diameter of 1.8 mm. The cross-sectional diameter of rice is approximately 2 to 3 mm. The microplastics in rice are generally 1 mm or less in diameter and are difficult to identify manually. Through the synergistic action of the centrifugal fan 27 and the drive turbulence blades 29, rice husks, small organic particles and microplastics with a diameter of 1.8 mm or less can be discharged through the mesh mesh 24 to the outside of the screen mesh 24 and discharged into the circular tank 21 under the action of the air duct formed by the centrifugal fan 27 and the air inlet pipe 28.

[0031] The outer side of the turbulence blade 29 is covered with a flexible cladding, which can reduce the impact on the integrity of rice grains during rotation.

[0032] The adsorption and impurity removal assembly includes a conveyor belt 51, flexible adsorption plates 52, and a second motor 53. A pair of second motors 53 are installed at the bottom of a feeding plate 5. Several sets of guide grooves are equidistantly arranged on the top of the feeding plate 5. The conveyor belt 51 is slidably fitted within the guide grooves. The conveyor belt 51 is a flexible belt with its ends connected. The surface of the conveyor belt 51 is coated with an antistatic coating. The thickness of the conveyor belt 51 is consistent with the depth of the guide grooves, thereby ensuring that it does not obstruct the falling process of rice grains. Several sets of flexible adsorption plates 52, which serve as electrostatic capacitors, are equidistantly embedded in the conveyor belt 51. A drive shaft 54 ​​is installed at the output end of the second motor 53. Several sets of cylindrical sleeves 55 are installed on the drive shaft 54, and the cylindrical sleeves 55 are in drive engagement with the conveyor belt 51. Driven by the second motor 53, the conveyor belt 51 reciprocates on the feeding plate 5. The two second motors 53 rotate in opposite directions. Adjacent conveyor belts 51 are respectively driven by the cylindrical sleeves 55 on both sides, so that the rotation directions of adjacent conveyor belts 51 are opposite. Several sets of electrostatic generators 56 and cleaning components 6 are installed at the bottom of the feeding plate 5. The conveyor belt 51 passes through the electrostatic generators 56 and cleaning components 6 in sequence from the direction close to the cylindrical sleeves 55, so as to eliminate static electricity, remove impurities and regenerate static electricity on the flexible adsorption plate 52. The opposite rotation directions between adjacent conveyor belts 51 can ensure that the rice and impurities are in contact with the flexible adsorption plate 52 for as long as possible on the top of the feeding plate 5, so as to adsorb as many impurities in the rice particles as possible.

[0033] like Figure 1 , Figure 5 and Figure 6As shown, the cleaning component 6 includes a sealed box 61, an atomizing nozzle 64, a pressure plate 66, a nozzle 72, and a filter 77. The sealed box 61 has square grooves on both sides, with a conveyor belt 51 running through the space between them. A flexible support block 62 is located at the bottom of the sealed box 61, and several sets of ball bearings are embedded in the flexible support block 62. These ball bearings slide in conjunction with the conveyor belt 51. A contact block 69 is located at the top of the square groove near the side where the conveyor belt 51 enters the sealed box 61. The contact block 69 is connected to a grounding module 15, which is installed inside the housing 1. The contact block 69 and the grounding module 15 release the charge on the flexible adsorption plate 52, facilitating the blowing away of impurities on the flexible adsorption plate 52. A filter is installed inside the sealed box 61 near the contact block 69. The filter box 74 has an air inlet 75 at its bottom. The sealed box 61 has a through groove 7, and an mounting plate 76 is slidably installed in the through groove 7. The circulating air pump 71 is fixedly installed on the sealed box 61 by screws. The mounting plate 76 has several sets of air holes and a filter screen 77 is installed on the mounting plate 76. The circulating air pump 71 and the nozzle 72 are installed in the sealed box 61. The output end of the circulating air pump 71 is connected to the nozzle 72, and the input end of the nozzle 72 is connected to the bottom of the side wall of the filter box 74 through the air supply pipe 73. With the circulating air pump 71 blowing on the charge-removing flexible adsorption plate 52 and the filtering action of the filter screen 77, impurities on the flexible adsorption plate 52 can be removed. The side of the air inlet 75 away from the inner wall of the sealed box 61 is inclined upward with a baffle 78 to prevent impurities from falling back.

[0034] A fixing rod 67 is installed inside the sealed box 61. A pressure plate 66 is rotatably mounted on the bottom of the fixing rod 67. A velvet cloth is attached to the bottom of the pressure plate 66. The pressure plate 66 is in contact with the flexible adsorption plate 52. Springs 68 are connected between the two sides of the pressure plate 66 and the fixing rod 67. The springs 68 allow the pressure plate 66 to adapt to the direction of the conveyor belt 51 and thus adhere tightly to the flexible adsorption plate 52. A water storage box 63, an atomizing nozzle 64, and a humidity sensor 65 are installed at the top inside the sealed box 61. The atomizing nozzle 64 atomizes the water in the water storage box 63 to humidify the inside of the sealed box 61, which can speed up the removal of static electricity and cleaning efficiency. The humidity sensor 65 is used to collect the humidity signal inside the sealed box 61 and send the signal to the control module 4. The control module 4 adjusts the humidity inside the sealed box 61 based on feedback. Then, the pressure plate 66 and the velvet cloth are used to wipe the flexible adsorption plate 52, which can realize the removal of static electricity and cleaning of the flexible adsorption plate 52.

[0035] like Figure 7As shown, the control module 4 includes a signal processing module 41, a signal receiving module 42, an adjustment feedback module 43, and a signal transmitting module 44. The signal receiving module 42 receives signals from the spectral sensor 3 and the humidity sensor 65 and transmits the signals to the signal processing module 41. The signal processing module 41 stores a spectral signal analysis program and a humidity setpoint. After processing the spectral signal, the signal processing module 41 sends the analysis results to the signal transmitting module 44. When the humidity signal value collected by the humidity sensor 65 is different from the preset value, the signal processing module 41 adjusts the atomizing nozzle 64 through the adjustment feedback module 43 to ensure that the humidity inside the sealed box 61 remains stable. The signal transmitting module 44 sends the humidity signal, spectral signal information, and analysis results received by the signal processing module 41 to the terminal control center, which facilitates technicians to monitor the operation of the equipment.

[0036] A method for using a rice impurity removal and screening device includes the following specific steps:

[0037] Make preliminary settings for the equipment parameters, set the humidity setting to 50%RH, download the spectral signal analysis program to the equipment and run it;

[0038] Preliminary screening and impurity removal: The screening component 2 in the equipment is used to initially separate and remove impurities from the rice;

[0039] Electrostatic adsorption for impurity removal involves applying static electricity to the flexible adsorption plate 52, adsorbing impurities, removing static electricity, and cleaning. After cleaning, the process of applying static electricity, adsorbing impurities, removing static electricity, and cleaning is repeated to adsorb small particulate impurities in the rice.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rice impurity removing and screening device, comprising a box (1), a screening assembly (2), a spectrum sensor (3), a discharging plate (5), an adsorption impurity removing assembly and a cleaning assembly (6), characterized in that: The top of the box (1) is fixedly installed with a screening assembly (2) through a support frame (11), one side in the box (1) is rotatably installed with a discharging plate (5), the discharging plate (5) is installed with an adsorption impurity removal assembly, the adsorption impurity removal assembly is used for adsorbing impurities in rice, the other side of the discharging plate (5) is rotatably installed with a hydraulic telescopic rod (13), the hydraulic telescopic rod (13) is rotatably installed on the inner side wall of the box (1), the bottom of the side of the discharging plate (5) close to the hydraulic telescopic rod (13) is rotatably installed with a baffle (14), one side of the box (1) close to the baffle (14) is fixedly installed with a spectrum sensor (3), the spectrum sensor (3) is used for collecting the spectrum signal of the rice sliding off the discharging plate (5) and sending the signal to a control module (4), the control module (4) is installed on the bottom in the box (1), the bottom in the box (1) is obliquely installed with a guide plate, the bottom of the side of the box (1) away from the spectrum sensor (3) is provided with a box door (12); The screening assembly (2) comprises a circular tank (21), a discharging disc (23), a screen (24), a first motor (25) and a centrifugal fan (27); The adsorption impurity removal assembly comprises a conveying belt (51), a flexible adsorption plate (52) and a pair of second motors (53), the pair of second motors (53) are installed on the bottom of the discharging plate (5), the top of the discharging plate (5) is equidistantly provided with a plurality of groups of guide grooves, the conveying belt (51) is slidably fitted in the guide grooves, the conveying belt (51) is a flexible belt connected at the head and the tail, a plurality of groups of flexible adsorption plates (52) serving as electrostatic capacitors are equidistantly embedded on the conveying belt (51), a transmission shaft (54) is installed on the output end of the second motor (53), a plurality of groups of cylindrical sleeves (55) are installed on the transmission shaft (54), the cylindrical sleeves (55) are in transmission cooperation with the conveying belt (51), the rotation directions of the two second motors (53) are opposite, and adjacent conveying belts (51) are in transmission cooperation with the cylindrical sleeves (55) on the two sides; The cleaning assembly (6) comprises a sealing box (61), an atomizing nozzle (64), a pressing plate (66), a nozzle (72) and a filter screen (77), the bottom of the sealing box (61) is provided with a flexible supporting block (62), a plurality of groups of rolling balls are embedded on the flexible supporting block (62), and the rolling balls are in sliding cooperation with the conveying belt (51); A fixing rod (67) is installed in the sealing box (61), the bottom of the fixing rod (67) is rotatably installed with the pressing plate (66), and the pressing plate (66) is in contact with the flexible adsorption plate (52).

2. The rice impurity removing and screening apparatus according to claim 1, wherein: The bottom of the circular tank (21) is fixedly provided with a conical hopper (22), and the bottom of the conical hopper (22) is provided with a discharging disc (23). The circular tank (21), the conical hopper (22) and the discharging disc (23) are communicated with each other. The conical hopper (22) is fixedly arranged on the top of the box body (1), and the circular tank (21) is fixed on the top of the box body (1) under the support of the support frame (11). An annular screen (24) is arranged between the conical hopper (22) and the top of the circular tank (21). The top of the circular tank (21) is provided with a plurality of groups of feeding holes. The top edge of the circular tank (21) is provided with an annular retaining ring (26). The feeding holes are located on the inner side of the screen (24). A first motor (25) is arranged on the top of the circular tank (21). The output end of the first motor (25) is provided with a rotating shaft. A plurality of inclined upward disturbing vanes (29) are arranged on the rotating shaft in a circumferential direction. A centrifugal fan (27) is arranged on the top of the side surface of the circular tank (21). An air inlet pipe (28) is arranged on the bottom of the side surface of the circular tank (21) in an inclined manner and is communicated with the circular tank (21). The air inlet pipe (28) and the centrifugal fan (27) are symmetrically arranged relative to the extension direction of the discharging disc (23) in a horizontal plane. The bottom of the discharging disc (23) is provided with a plurality of groups of discharging holes.

3. The rice impurity removing and screening apparatus according to claim 2, wherein: The outer side of the disturbing vane (29) is covered with a flexible cladding layer.

4. The rice impurity removing and screening apparatus according to claim 3, wherein: The surface of the conveying belt (51) is coated with an anti-static coating. The thickness of the conveying belt (51) is consistent with the depth of the guide groove. The bottom of the discharging plate (5) is provided with a plurality of groups of static electricity generators (56) and cleaning assemblies (6). The conveying belt (51) sequentially passes through the static electricity generators (56) and the cleaning assemblies (6) from the direction close to the cylindrical sleeve (55).

5. The rice impurity removing and screening apparatus according to claim 4, wherein: Square grooves are arranged on both sides of the sealing box (61). The conveying belt (51) is arranged to pass through the square grooves. A contact block (69) is arranged on the top of the square groove on the side close to the conveying belt (51) entering the sealing box (61). The contact block (69) is connected with the grounding wire module (15). The grounding wire module (15) is arranged in the box body (1). A filter box (74) is arranged on the side close to the contact block (69) in the sealing box (61). An air inlet (75) is arranged on the bottom of the filter box (74). A through groove (7) is arranged on the sealing box (61). An installation plate (76) is slidably arranged in the through groove (7). A circulating air pump (71) is fixedly arranged on the sealing box (61) by screws. A plurality of air holes are arranged on the installation plate (76). A filter screen (77) is arranged on the installation plate (76). The circulating air pump (71) and a spray head (72) are arranged in the sealing box (61). The output end of the circulating air pump (71) is communicated with the spray head (72). The input end of the spray head (72) is communicated with the side wall bottom of the filter box (74) through a gas conveying pipe (73). A disturbing plate (78) is arranged on the side of the air inlet (75) away from the inner wall of the sealing box (61) in an inclined upward manner.

6. The rice impurity removing and screening apparatus according to claim 5, wherein: The bottom of the pressing plate (66) is attached with a velvet cloth, and springs (68) are connected between the two sides of the pressing plate (66) and the fixed rods (67). The sealed box (61) is provided with a water storage box (63), an atomizing nozzle (64) and a humidity sensor (65) at the top. The humidity sensor (65) is used to collect the humidity signal in the sealed box (61) and send the signal to the control module (4).

7. The rice impurity removing and sorting apparatus according to claim 6, wherein: The control module (4) includes a signal processing module (41), a signal receiving module (42), an adjustment feedback module (43) and a signal transmitting module (44). The signal receiving module (42) is used to receive the signals sent by the spectrum sensor (3) and the humidity sensor (65) and send the signals to the signal processing module (41). The signal processing module (41) stores a spectrum signal analysis program and a humidity set value. After processing the spectrum signal, the signal processing module (41) sends the analysis result to the signal transmitting module (44). The signal transmitting module (44) sends the humidity signal, the spectrum signal information and the analysis result received by the signal processing module (41) to the terminal control center.

8. A method of using a rice impurity removing and screening device, characterized by, The rice impurity removing and screening device of any one of claims 1-7, and the use method comprises the following specific steps: Preliminary setting of equipment parameters, setting the humidity set value to 50% RH, downloading the spectrum signal analysis program to the equipment and running; Preliminary screening and impurity removing; Static adsorption impurity removing, electrostatic adsorption, adsorption of impurities, removal of static electricity and cleaning operation through the flexible adsorption plate (52), and repeating the electrostatic adsorption, adsorption of impurities, removal of static electricity and cleaning operation after cleaning to realize adsorption of small particle impurities in the rice.

Images