Grain cleaning and grading screening machine and screening process thereof

Abstract

The invention relates to the technical field of driving motor energy-saving assemblies, and discloses a grain cleaning and grading screening machine which comprises a feeding assembly, the top of the feeding assembly is fixedly connected with a feeding chamber, the front end of the feeding assembly is fixedly connected with a driving structure, and the driving structure is specifically a driving motor. A control center is fixedly connected to the surface of one end of the feeding assembly, a screening assembly is fixedly connected to the other end of the feeding assembly, a filter plate is arranged in the screening assembly, a discharging pipe of the feeding assembly is arranged on the top side of one end of the filter plate, and a mass sensor is fixedly connected to the interior of the filter plate and electrically connected with the control center. Vibration assemblies are fixedly connected to the front end and the rear end of the screening assembly, connecting rods are fixedly connected to the tops of the vibration assemblies, the filter plate is fixedly connected between the two connecting rods, the connecting rods are slidably connected to the outer surface of the screening assembly, and the device has the advantages that the energy-saving effect of the lifting device on the driving motor is achieved, and use by a user is facilitated.

Description

Technical Field

[0001] This invention relates to the field of energy-saving components for drive motors, specifically to a grain cleaning, grading, and screening machine and its screening process. Background Technology

[0002] During the harvesting, drying, transportation and storage of oat grains, various impurities of different sizes can be mixed in. When removing impurities from oat grains, vibrating screens are usually used to grade and clean the impurities.

[0003] Publication No. CN120190005A discloses a grain grinding mill, characterized by comprising: a grinding mill frame, set at a target position and used to support various components of the grain grinding mill; a grinding chamber, set on the grinding mill frame, the grinding chamber being provided with a feed hopper and a discharge pipe; a coarse material collection box, set on the grinding mill frame; a grinding unit, set inside the grinding chamber and used for grinding grains; a suction unit, set above the discharge pipe and used for suction of the ground fine grains; a dispersion unit, set on the discharge pipe and used for dispersion of the ground material; a feed speed control unit, set below the feed hopper and used for controlling the grain feed speed; and a drive unit, set on the grinding mill frame and used for driving the grinding unit, dispersion unit, and feed speed control unit to work. This device is more efficient, energy-saving, and environmentally friendly, bringing significant economic and social benefits to the grain processing industry. In actual production, oat grains are screened using a vibrating screen. During the screening process, a drive motor rotates and vibrates the screen mesh in conjunction with the vibrating components. The vibration of the screen mesh separates the oat grains, leaving large impurities on the screen surface while small impurities and oat grains fall to the second screen mesh for further screening. To ensure screening efficiency, a large amount of oat grains is usually poured onto the screen surface during the vibrating screening process, increasing the overall mass of the screen mesh and the energy consumption of the drive motor. After this portion of oat grains is screened and before the next portion arrives, the drive motor continues to drive the screen mesh to vibrate. This idling of the drive motor further increases the overall energy consumption of the device. There is room for further improvement in the energy-saving effect of existing equipment when screening oat grains. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a grain cleaning, grading and screening machine and its screening process, which has the advantages of improving the energy-saving effect of the device on the drive motor and being easy for users to use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a grain cleaning, grading, and screening machine and its screening process, comprising: a feeding assembly, a feeding chamber, a drive structure, a control center, a screening assembly, a vibration assembly, a connecting rod, a striking plate, an air inlet pipe, an air outlet chamber, an air conveying pipe, a filter plate, an adjustment assembly, a first linear drive assembly, a fixed rod, a mounting plate, a separation chamber, a separation plate, an elastic element, a top column, a conveying chamber, a cleaning chamber, a baffle plate, a feeding valve, a collecting chamber, a piston plate, a conveying pipe, an extraction pipe, a second linear drive assembly, a top plate, a movable plate, a grinding chamber, a discharge plate, and a cyclone collector.

[0006] The positions and connections of the above structures are as follows: A grain cleaning, grading and screening machine includes a feeding assembly. A feeding chamber is fixedly connected to the top of the feeding assembly. A drive structure, specifically a drive motor, is fixedly connected to the front end of the feeding assembly. A control center is fixedly connected to one end surface of the feeding assembly. A screening assembly is fixedly connected to the other end of the feeding assembly. A filter plate is installed inside the screening assembly. The discharge pipe of the feeding assembly is located on the top side of one end of the filter plate. A mass sensor is fixedly connected inside the filter plate and is electrically connected to the control center. Vibration assemblies are fixedly connected to both the front and rear ends of the screening assembly. A connecting rod is fixedly connected to the top of the vibration assembly, and the filter plate is fixedly connected between the two connecting rods. The connecting rod is slidably connected to the outer surface of the screening assembly.

[0007] Preferably, an air inlet pipe is fixedly connected to the inner wall of the bottom side of the feeding assembly, an air conveying pipe is fixedly connected to one end surface of the air inlet pipe, an air supply assembly is fixedly connected inside the feeding assembly, the output end of the air supply assembly is fixedly connected to the air conveying pipe, an air outlet chamber is fixedly connected to the top of the air inlet pipe, the air outlet chamber is located at the bottom of the filter plate, a separation chamber is fixedly connected inside the screening assembly, a separation plate is slidably connected inside the separation chamber, and both the separation chamber and the separation plate are provided with multiple through holes.

[0008] Preferably, an adjustment component is provided on the other end surface of the screening component. Two first linear drive components are fixedly connected to one end of the adjustment component near the screening component, and the first linear drive components are fixedly connected to the other end surface of the screening component. The first linear drive components are specifically electric push rods. Two fixed rods are fixedly connected to one end surface of the adjustment component. A mounting plate is fixedly connected to one end surface of the two fixed rods. The separation plate passes through the separation chamber and is fixedly connected to the mounting plate. Multiple elastic elements are fixedly connected inside the separation plate and are arranged between every two through holes. The elastic elements are specifically springs. A top column is fixedly connected to the other end of the elastic element and passes through the separation plate and extends to the bottom outer side of the separation plate. The bottom of the top column is inclined and the edges are rounded.

[0009] Preferably, the top of the screening component is fixedly connected to a conveying chamber, the top of the conveying chamber is fixedly connected to a removal chamber, the front and rear inner walls of the removal chamber are fixedly connected to two baffles with an arc shape, the front and rear inner walls of the removal chamber are provided with collection ports and the collection ports are located at the bottom of the baffles, the front and rear surfaces of the removal chamber are fixedly connected to feed valves and the feed valves communicate with the collection ports, and the inner diameter of the conveying chamber is smaller than the inner diameter of the screening component and the removal chamber.

[0010] Preferably, the front and rear surfaces of the impurity removal chamber are provided with collection chambers, and the bottom of the collection chambers is inclined. A piston plate is movably connected inside the collection chamber. A conveying pipe is fixedly connected to the bottom of the collection chamber, and the other end of the conveying pipe is fixedly connected to the screening component. The other end of the conveying pipe is located on the top side of the filter plate. A first solenoid valve is fixedly connected at the connection between the conveying pipe and the collection chamber. An extraction pipe is fixedly connected to one end surface of the collection chamber, and a second solenoid valve is fixedly connected at the connection between the extraction pipe and the collection chamber. The other end of the extraction pipe is fixedly connected to one end surface of the impurity removal chamber. A second linear drive assembly is fixedly connected to the front and rear sides of the top of the impurity removal chamber. The second linear drive assembly is specifically an electric push rod. A top plate is fixedly connected to the top output end of the second linear drive assembly. A movable plate is fixedly connected to the bottom of the top plate. The movable plate passes through the collection chamber, and its extension is fixedly connected to the piston plate. A striking plate is fixedly connected to the top of the connecting rod. The striking plate is located at the bottom of the collection chamber. A valve port is fixedly connected between the impurity removal chamber and the conveying chamber.

[0011] Preferably, a cyclone collector is fixedly connected to the top of the impurity removal chamber, and a grinding chamber is fixedly connected to the top output end of the cyclone collector. Two crushing shafts and a rotary drive assembly are fixedly connected inside the grinding chamber, and a discharge plate is fixedly connected to the other end surface of the grinding chamber.

[0012] Preferably, the control center comprises a programmable logic controller, a human-machine interface, a sensor system, a drive structure, software and communication system, and a data hub, wherein the programmable logic controller, the human-machine interface, the sensor system, the drive structure, software and communication system, and the data hub are electrically connected to each other.

[0013] A grain cleaning, grading and screening process includes: feeding, pouring oats into the feeding chamber and conveying the oats to the filter plate through the feeding component, opening the drive structure to cooperate with the filter plate to vibrate the oats, and during this period, the quality sensor adjusts the vibration frequency of the drive structure according to the quality of the oats on the surface of the filter plate; The conveying process involves using the control center to activate the air supply component to blow out airflow, which carries the oats on the filter plate surface through the separation chamber and conveying chamber to the impurity removal chamber, where the impurity removal process for the oats is completed. After being crushed, the airflow continues to carry the oats through the cyclone collector to the grinding chamber, where they expand and are crushed by the two crushing shafts driven by the rotary drive assembly. The crushed oats are then discharged through the discharge plate.

[0014] Beneficial effects 1. The grain cleaning, grading and screening machine and its screening process allow the device to freely adjust the vibration frequency according to the quality of oats by opening the screening components, thereby reducing the overall energy consumption of the device, improving the energy-saving effect of the device, and making it easier for users to use.

[0015] 2. The grain cleaning, grading and screening machine and its screening process allow the device to complete the screening and cleaning of oats while conveying them by opening the separation chamber. The device does not require a separate cleaning structure, which improves the energy efficiency of the device and makes it easier for users to use.

[0016] 3. The grain cleaning, grading and screening machine and its screening process enable the device to perform multi-stage screening of oats during the conveying process by opening the impurity removal chamber, and screen out some medium impurities with similar particles but different quality, thereby improving the screening quality of the device and making it easier for users to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance and structure of a grain cleaning, grading and screening machine and its screening process according to the present invention; Figure 2 This is a side view of a grain cleaning, grading, and screening machine and its screening process according to the present invention. Figure 3 This is a schematic diagram of the internal structure of a grain cleaning, grading, and screening machine and its screening process according to the present invention. Figure 4 This is a schematic diagram of the filter plate structure of a grain cleaning, grading and screening machine and its screening process according to the present invention. Figure 5 This is a schematic diagram of the structure of a grain cleaning, grading and screening machine and its screening process adjustment component according to the present invention; Figure 6 This is a schematic diagram of the internal structure of the separation chamber of a grain cleaning, grading and screening machine and its screening process according to the present invention. Figure 7 This is a schematic diagram of the internal structure of the separation plate of a grain cleaning, grading and screening machine and its screening process according to the present invention. Figure 8 This is a schematic diagram of the internal structure of the grain cleaning, grading and screening machine and its screening process for the present invention. Figure 9 This is a schematic diagram of the internal structure of the collection chamber of a grain cleaning, grading and screening machine and its screening process according to the present invention.

[0018] In the diagram: 1. Feeding assembly; 10. Feeding chamber; 11. Drive structure; 12. Control center; 2. Screening assembly; 20. Vibration assembly; 200. Connecting rod; 201. Striking plate; 21. Air inlet pipe; 210. Air outlet chamber; 211. Air conveying pipe; 22. Filter plate; 23. Adjustment assembly; 230. First linear drive assembly; 231. Fixed rod; 232. Mounting plate; 24. Separation chamber; 240. Separation plate; 241. Elastic element; 242. Top column; 3. Conveying chamber; 4. Impurity removal chamber; 40. Baffle plate; 41. Feed valve; 42. Collection chamber; 420. Piston plate; 421. Conveying pipe; 422. Extraction pipe; 43. Second linear drive assembly; 430. Top plate; 431. Movable plate; 5. Grinding chamber; 50. Discharge plate; 51. Cyclone collector. Detailed Implementation

[0019] 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.

[0020] Example Please see Figures 1 to 9 A grain cleaning, grading, and screening machine includes a feeding assembly 1, a feeding chamber 10 fixedly connected to the top of the feeding assembly 1, a drive structure 11 fixedly connected to the front end of the feeding assembly 1 (specifically a drive motor), a control center 12 fixedly connected to one end surface of the feeding assembly 1, and a screening assembly 2 fixedly connected to the other end of the feeding assembly 1. A filter plate 22 is disposed inside the screening assembly 2, and a discharge pipe of the feeding assembly 1 is disposed on the top side of one end of the filter plate 22. A mass sensor is fixedly connected inside the filter plate 22 and electrically connected to the control center 12. Vibration assemblies 20 are fixedly connected to both the front and rear ends of the screening assembly 2. A connecting rod 200 is fixedly connected to the top of the vibration assembly 20, and the filter plate 22 is fixedly connected between the two connecting rods 200. The connecting rods 200 are slidably connected to the outer surface of the screening assembly 2. In actual production, oat grains are screened using a vibrating screen. During the screening process, the drive motor rotates and vibrates the screen in conjunction with the vibrating component 20. The vibration of the screen screen separates the oat grains, leaving large impurities on the screen surface while small impurities and oat grains fall to the second screen for further screening. To ensure screening efficiency, a large amount of oat grains is usually poured onto the screen surface during the vibrating screening process, which increases the overall mass of the screen and the energy consumption of the drive motor. After this part of the oat grains is screened and before the next part of oat grains arrives, the drive motor continues to drive the screen to vibrate. At this time, the idling of the drive motor further increases the overall energy consumption of the device. The device can be used for grains such as oats, sorghum, and corn. The energy-saving effect of the existing equipment when screening oat grains has room for further improvement. This invention discloses a grain cleaning, grading, and screening machine and its screening process. Oats are fed into the feeding chamber 10 and conveyed to the filter plate 22 via the feeding assembly 1. The drive structure 11 activates to vibrate the oats in conjunction with the filter plate 22. During this process, a quality sensor adjusts the vibration frequency of the drive structure 11 based on the mass of the oats on the filter plate 22 surface. The control center 12 activates the air supply assembly to blow air, which carries the oats from the filter plate 22 surface through the separation chamber 24 and the conveying chamber 3 to the impurity removal chamber 4. Impurity removal is completed during this conveying process. The airflow continues to carry the oats through the cyclone collector 51 and then into the grinding chamber 5, where they are processed by two rotating drive assemblies. The crushing shaft expands and crushes the oats, which are then discharged through the discharge plate 50. During this process, the quality sensor continuously monitors the quality of the oats on the top of the filter plate 22. When there are more oats on the surface of the filter plate 22, the control center 12 controls the drive structure 11 to increase the rotation frequency, and the vibration component 20 and connecting rod 200 drive the vibration frequency of the filter plate 22 to increase. When there are fewer oats on the surface of the filter plate 22, the control center 12 controls the drive structure 11 to decrease the rotation frequency, and the vibration component 20 and connecting rod 200 drive the vibration frequency of the filter plate 22 to decrease. This allows the device to freely adjust the vibration frequency according to the quality of the oats, reducing the overall energy consumption of the device, improving the energy-saving effect of the device, and making it easier for users to use. Please see Figures 3 to 5 Furthermore, in the above description, an air inlet pipe 21 is fixedly connected to the inner wall of the bottom side of the feeding assembly 1, and an air conveying pipe 211 is fixedly connected to one end surface of the air inlet pipe 21. An air supply assembly is fixedly connected inside the feeding assembly 1, and the output end of the air supply assembly is fixedly connected to the air conveying pipe 211. An air outlet chamber 210 is fixedly connected to the top of the air inlet pipe 21. The air outlet chamber 210 is located at the bottom of the filter plate 22. A separation chamber 24 is fixedly connected inside the screening assembly 2, and a separation plate 240 is slidably connected inside the separation chamber 24. Both the separation chamber 24 and the separation plate 240 have multiple through holes. Impurities in oats can be categorized into large, medium, and small impurities based on particle size. In the aforementioned steps, the control center 12 activates the air supply assembly, which delivers airflow through the air duct 211 and inlet duct 21 to the outlet chamber 210. The outlet chamber 210 blows the airflow upwards onto the filter plate 22. The oats on the surface of the filter plate 22 move upwards with the airflow, while the large impurities, being larger than the oats, are difficult to move upwards with the airflow. This constitutes the initial screening of the oats. The filter plate 22 itself is subjected to the driving structure 11 and the vibration assembly 20. Driven by the connecting rod 200, the vibration reduces the blockage of large impurities in the oats by the filter pores inside the filter plate 22. The oats are transported to the separation chamber 24 by airflow. The through holes inside the separation chamber 24 and the separation plate 240 perform secondary screening of the oats moving with the airflow. At this time, the oats can continue to move upward with the airflow through the through holes in the separation chamber 24 and the separation plate 240, while the medium impurities in the oats are screened out by the through holes. Thus, the device can complete the screening and cleaning of oats while conveying them. The device does not require a separate cleaning structure, improves the energy efficiency of the device, and is convenient for users. Please see Figures 5 to 7 Further, as described above, an adjustment component 23 is provided on the other end surface of the screening component 2. Two first linear drive components 230 are fixedly connected to one end of the adjustment component 2 near the screening component 2, and the first linear drive components 230 are fixedly connected to the other end surface of the screening component 2. The first linear drive components 230 are specifically electric push rods. Two fixed rods 231 are fixedly connected to one end surface of the adjustment component 23. An installation plate 232 is fixedly connected to one end surface of the two fixed rods 231. A separation plate 240 passes through the separation chamber 24 and is fixedly connected to the installation plate 232. Multiple elastic elements 241 are fixedly connected inside the separation plate 240, and the elastic elements 241 are arranged between every two through holes. The elastic elements 241 are specifically springs. A top column 242 is fixedly connected to the other end of the elastic element 241, and the top column 242 passes through the separation plate 240 and extends to the bottom outer side of the separation plate 240. The bottom of the top column 242 is inclined and the edge is rounded. In the above steps, after the impurities are screened, they will move upward again with the airflow. During this process, the impurities may block the through holes at the bottom of the separation chamber 24, resulting in a decrease in the overall screening and conveying efficiency of the device. At this time, the control center 12 activates the two first linear drive components 230. The activation of the two first linear drive components 230 drives the adjusting component 23, the two fixed rods 231, and the mounting plate 232 as follows. Figure 5As shown, the mounting plate 232 moves to the right, causing the separation plate 240 to move within the separation chamber 24. Initially, the separation plate 240 coincides with the through hole in the separation chamber 24, the top post 242 abuts against the bottom inner wall of the separation chamber 24, and the elastic element 241 undergoes elastic deformation due to compression. After the separation plate 240 moves until it is completely displaced from the through hole in the separation chamber 24, the top post 242 moves into the through hole at the bottom of the separation chamber 24, and the elastic element 241 returns to its elastic deformation state. At this time, the top post 242 is affected by the elastic force. The probe extends into the through hole at the bottom of the separation chamber 24 and pushes out the blocked impurities. Then, the control center 12 controls the first linear drive assembly 230 to reset the separation plate 240. Since the top column 242 is set in an inclined shape and its edges are rounded, it can easily protrude from the through hole and separate. Thus, the device can clean the blocked impurities without stopping the machine, avoiding the energy loss caused by the drive structure 11 running idle when the screening device stops and the feeding assembly 1 continues to run, improving the energy-saving effect of the device and making it easier for users to use. Please see Figures 3 to 8 Furthermore, as described above, a conveying chamber 3 is fixedly connected to the top of the screening component 2, and a removal chamber 4 is fixedly connected to the top of the conveying chamber 3. Two baffles 40 are fixedly connected to the inner walls of the front and rear ends of the removal chamber 4, and the baffles 40 are arc-shaped. A collection port is opened at the inner walls of the front and rear ends of the removal chamber 4, and the collection port is located at the bottom of the baffles 40. A feed valve 41 is fixedly connected to the surface of the front and rear ends of the removal chamber 4, and the feed valve 41 communicates with the collection port. The inner diameter of the conveying chamber 3 is smaller than the inner diameter of the screening component 2 and the removal chamber 4. In the above steps, oats enter the conveying chamber 3 through the screening component 2, and then enter the impurity removal chamber 4 through the conveying chamber 3. Since the inner diameter of the conveying chamber 3 is smaller than that of the screening component 2 and the impurity removal chamber 4, and the flow rate of the airflow and oats is conserved during flow, when the airflow and oats move through the screening component 2 into the conveying chamber 3, the airflow and oats move from the large-diameter port to the small-diameter port. At this time, the flow velocity of the airflow and oats increases under the condition of constant flow rate, increasing the conveying efficiency of the device. Similarly, when the airflow and oats move through the conveying component 2 into the impurity removal chamber 4, their flow velocity decreases. Since there may be impurities of the same size but larger than the oats in the oats after passing through the separation chamber 24 and the separation plate 240, the airflow and... During the conveying process, the oats come into contact with two baffles 40. Since the airflow velocity in the impurity removal chamber 4 is still greater than the suspension velocity of the oats, the oats will continue to be carried upward by the airflow along the baffles 40. Meanwhile, the suspension velocity of the medium impurities is greater than the airflow velocity in the impurity removal chamber 4. When they come into contact with the baffles 40, they will move towards the collection port under the influence of inertia. Initially, the feed valve 41 is open, and the medium impurities can fall into the collection chamber 42 through the collection port for collection. Thus, the device can perform multi-stage screening of oats during the conveying process and screen out some medium impurities with similar particles but different qualities, thereby improving the screening quality of the device and making it easier for users to use. Please see Figures 8 to 9 Further, as described above, the front and rear surfaces of the impurity removal chamber 4 are each provided with a collection chamber 42, and the bottom of the collection chamber 42 is inclined. A piston plate 420 is movably connected inside the collection chamber 42. A conveying pipe 421 is fixedly connected to the bottom of the collection chamber 42, and the other end of the conveying pipe 421 is fixedly connected to the screening assembly 2. The other end of the conveying pipe 421 is located on the top side of the filter plate 22. A first solenoid valve is fixedly connected to the connection between the conveying pipe 421 and the collection chamber 42. An extraction pipe 422 is fixedly connected to one end surface of the collection chamber 42, and a second solenoid valve is fixedly connected to the connection between the extraction pipe 422 and the collection chamber 42. The other end of 22 is fixedly connected to one end surface of the impurity removal chamber 4. The front and rear sides of the top of the impurity removal chamber 4 are fixedly connected to the second linear drive assembly 43. The second linear drive assembly 43 is specifically an electric push rod. The top output end of the second linear drive assembly 43 is fixedly connected to the top plate 430. The bottom of the top plate 430 is fixedly connected to the movable plate 431. The movable plate 431 passes through the collection chamber 42 and the extension of the movable plate 431 is fixedly connected to the piston plate 420. The top of the connecting rod 200 is fixedly connected to the striking plate 201. The striking plate 201 is set at the bottom of the collection chamber 42. A valve port is fixedly connected between the impurity removal chamber 4 and the conveying chamber 3. During the screening process, some oats also move into the collection chamber 42. Both the oats and impurities are then transported back to the filter plate 22 via the conveying pipe 421, reducing oat waste. However, the oats and impurities can easily clog the conveying pipe 421 due to mutual compression. In this case, the control center 12 closes the valves at the impurity removal chamber 4 and the conveying chamber 3, as well as the feed valve 41. This creates a closed space inside the collection chamber 42. The control center 12 then activates the second linear drive assembly 43, which moves the top plate 430 upwards. This movement of the top plate 430, via the movable plate 431, moves the piston plate 420 within the collection chamber 42. The piston plate 420's movement reduces the air pressure inside the collection chamber 42, allowing air from the impurity removal chamber 4 to be drawn into the collection chamber 42 via the extraction pipe 422. The first solenoid valve is used for… To prevent airflow backflow, the control center 12 then activates the second linear drive assembly 43 to reset the movable plate 431 and piston plate 420. The reset of the piston plate 420 increases the air pressure inside the collection chamber 42 and transports air through the conveying pipe 421. The increased air pressure inside the conveying pipe 421 applies pressure to the clogged oats and impurities. At the same time, the vibration assembly 20 inside the screening assembly 2 moves up and down due to vibration, which drives the striking plate 201 to strike and vibrate in the impurity removal chamber 4 via the connecting rod 200. The vibration is transmitted to the collection chamber 42 and the conveying pipe 421 to clear the clogged oats and impurities. This prevents the impurities from accumulating in the collection chamber 42 and eventually falling back down through the connection between the conveying chamber 3 and the impurity removal chamber 4 after the impurities can no longer be collected, thus reducing the screening efficiency of the device. This improves the screening efficiency and screening quality of the device and makes it easier for users to operate. Please see Figures 1 to 9 Furthermore, in the above description, a cyclone collector 51 is fixedly connected to the top of the impurity removal chamber 4, and a grinding chamber 5 is fixedly connected to the top output end of the cyclone collector 51. Two crushing shafts and a rotary drive assembly are fixedly connected inside the grinding chamber 5, and a discharge plate 50 is fixedly connected to the other end surface of the grinding chamber 5. In the above steps, the airflow carries the oats upwards, and after passing through the cyclone collector 51, it separates the micro-impurities inside the oats. The remaining oats continue to move into the grinding chamber 5 under the drive of the airflow until they come into contact with the two rotating crushing shafts and are crushed. Thus, the device can complete multiple screening, conveying and crushing steps in sequence during operation. The device does not require additional structure or extra energy consumption for conveying and crushing oats, improving the energy-saving effect of the device and making it easier for users to use. Please see Figures 1 to 2 Furthermore, as described above, the control center 12 comprises a programmable logic controller, a human-machine interface, a sensor system, a drive structure 11, a software and communication system, and a data hub, and the programmable logic controller, the human-machine interface, the sensor system, the drive structure 11, the software and communication system, and the data hub are electrically connected to each other. The control center 12 is used to control the start and stop of each component inside the feeding assembly 1, screening assembly 2, impurity removal chamber 4, cyclone collector 51 and grinding chamber 5, to ensure the normal operation of the device.

[0021] 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 variations 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 grain cleaning and classifying machine comprising a feed assembly (1), characterized in that: The top of the feeding assembly (1) is fixedly connected with a feeding chamber (10), the front end of the feeding assembly (1) is fixedly connected with a driving structure (11), the driving structure (11) is specifically a driving motor, one end surface of the feeding assembly (1) is fixedly connected with a control center (12), the other end of the feeding assembly (1) is fixedly connected with a screening assembly (2), the inside of the screening assembly (2) is provided with a filter plate (22), the discharge pipe of the feeding assembly (1) is arranged at one end of the top side of the filter plate (22), the inside of the filter plate (22) is fixedly connected with a mass sensor, and the mass sensor is electrically connected with the control center (12), the front end and the rear end of the screening assembly (2) are fixedly connected with a vibrating assembly (20), the top of the vibrating assembly (20) is fixedly connected with a connecting rod (200), and the filter plate (22) is fixedly connected between the two connecting rods (200), and the connecting rod (200) is slidingly connected to the outer surface of the screening assembly (2).

2. A grain cleaning and classifying machine according to claim 1, characterised in that: The inside of the bottom of the feeding assembly (1) is fixedly connected with an air inlet pipe (21), one end surface of the air inlet pipe (21) is fixedly connected with an air conveying pipe (211), the inside of the feeding assembly (1) is fixedly connected with a air conveying assembly, the output end of the air conveying assembly is fixedly connected with the air conveying pipe (211), the top of the air inlet pipe (21) is fixedly connected with an air outlet chamber (210), the air outlet chamber (210) is arranged at the bottom of the filter plate (22), the inside of the screening assembly (2) is fixedly connected with a separation chamber (24), the inside of the separation chamber (24) is slidingly connected with a separation plate (240), and the separation chamber (24) and the separation plate (240) are both provided with a plurality of through holes.

3. A grain cleaning and classifying machine according to claim 2, wherein: The other end surface of the screening assembly (2) is provided with an adjusting assembly (23), two first linear drive assemblies (230) are fixedly connected to one end of the adjusting assembly (23) close to the screening assembly (2), and the first linear drive assemblies (230) are fixedly connected to the other end surface of the screening assembly (2), the first linear drive assemblies (230) are specifically electric push rods, one end surface of the adjusting assembly (23) is fixedly connected with two fixed rods (231), one end surface of the two fixed rods (231) is fixedly connected with a mounting plate (232), the separation plate (240) penetrates through the separation chamber (24) and is fixedly connected with the mounting plate (232), a plurality of elastic elements (241) are fixedly connected to the inside of the separation plate (240) and are arranged between every two through holes, the elastic elements (241) are specifically springs, the other end of the elastic elements (241) is fixedly connected with a top column (242), the top column (242) penetrates through the separation plate (240) and extends to the bottom outside of the separation plate (240), and the bottom of the top column (242) is inclined and the edge is chamfered.

4. A grain cleaning and classifying machine according to claim 3, wherein: The top of the screening assembly (2) is fixedly connected with a conveying chamber (3), the top of the conveying chamber (3) is fixedly connected with a impurity removal chamber (4), the inner walls of the front end and the rear end of the impurity removal chamber (4) are fixedly connected with two shielding plates (40), the shielding plates (40) are arranged in an arc shape, collecting openings are arranged at the bottom of the shielding plates (40) and are arranged at the inner walls of the front end and the rear end of the impurity removal chamber (4), feed valves (41) are fixedly connected to the surfaces of the front end and the rear end of the impurity removal chamber (4) and communicate with the collecting openings, and the inner diameter of the conveying chamber (3) is smaller than the inner diameters of the screening assembly (2) and the impurity removal chamber (4).

5. A grain cleaning and classifying machine according to claim 4, wherein: The surfaces of the front end and the rear end of the impurity removal chamber (4) are provided with collecting chambers (42), the bottom of each collecting chamber (42) is arranged in an inclined shape, a piston plate (420) is movably connected to the inside of each collecting chamber (42), a conveying pipe (421) is fixedly connected to the bottom of each collecting chamber (42) and is fixedly connected to the screening assembly (2) at the other end, the other end of the conveying pipe (421) is arranged at the top side of the filter plate (22), a first electromagnetic valve is fixedly connected to the connection between the conveying pipe (421) and the collecting chamber (42), a suction pipe (422) is fixedly connected to the surface of one end of the collecting chamber (42) and is fixedly connected to the second electromagnetic valve at the connection between the suction pipe (422) and the collecting chamber (42), the other end of the suction pipe (422) is fixedly connected to the surface of one end of the impurity removal chamber (4), second linear drive assemblies (43) are fixedly connected to the front side and the rear side of the top of the impurity removal chamber (4), each second linear drive assembly (43) is an electric push rod, a top plate (430) is fixedly connected to the top output end of each second linear drive assembly (43), an activity plate (431) is fixedly connected to the bottom of the top plate (430), the activity plate (431) penetrates through the collecting chamber (42) and is fixedly connected to the piston plate (420) at the extended part of the activity plate (431), a knocking plate (201) is fixedly connected to the top of the connecting rod (200) and is arranged at the bottom of the collecting chamber (42), and a valve port is fixedly connected between the impurity removal chamber (5) and the conveying chamber (4).

6. A grain cleaning and classifying machine according to claim 5, wherein: The top of the impurity removal chamber (4) is fixedly connected with a cyclone collector (51), the top output end of the cyclone collector (51) is fixedly connected with a grinding chamber (5), two crushing shafts and a rotary drive assembly are fixedly connected to the inside of the grinding chamber (5), and a discharging plate (50) is fixedly connected to the other end surface of the grinding chamber (5).

7. A grain cleaning and classifying machine according to claim 1 wherein: The control center (12) is composed of a programmable logic controller, a human-computer interface, a sensor system, a driving structure (11), a software and communication system and a data hub, and the programmable logic controller, the human-computer interface, the sensor system, the driving structure (11), the software and communication system and the data hub are electrically connected with each other.

8. A grain cleaning and classifying process using the grain cleaning and classifying machine according to any one of claims 1 to 7, comprising: The oat is filled into the feeding chamber (10) and transported to the filter plate (22) through the feeding assembly (1), the driving structure (11) is opened to cooperate with the filter plate (22) to vibrate the oat, and the mass sensor adjusts the vibration frequency of the driving structure (11) according to the oat mass on the surface of the filter plate (22) during the vibration treatment; The control center (12) is opened to blow the air flow through the air supply assembly, the air flow carries the oat on the surface of the filter plate (22) and transports the oat to the impurity removal chamber (4) through the separation chamber (24) and the conveying chamber (3), and the impurity removal step of the oat is completed during the conveying process; The air flow continues to drive the oat to move to the grinding chamber (5) through the cyclone collector (51), and the oat is expanded and ground with the two grinding shafts driven by the rotary driving assembly, and the ground oat is discharged through the discharge plate (50).

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