Grain impurity removal air separator

Abstract

The utility model relates to the technical field of grain processing discloses grain edulcoration winnowing device, including processing box, the bottom fixed connection of processing box has the discharge bin, the top fixed connection of discharge bin has the bottom box, the inside of processing box and discharge bin is provided with the winnowing dust collection mechanism, the winnowing dust collection mechanism includes: first fan case, second fan case, first fixed plate, first air blower and two cylinder, the outside of first fan case is passed through in the front lateral wall of processing box, the rear lateral wall inside fixed connection of first fan case has first splitter plate, the utility model discloses the winnowing dust collection mechanism that sets up can solve the problem that causes the whole edulcoration not to be thorough, also has increased the workshop cleaning cost and maintenance cost problem, through dust collection box and first air blower synchronous operation, thereby effectively improve the equipment operation smoothness, reduce the problem of blockage, reduce the frequency of shutdown cleaning, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of grain processing technology, and in particular to a grain impurity removal and air separation device. Background Technology

[0002] A grain impurity removal air separation device is a device that uses wind power to separate light impurities from grain. The emergence and development of this device is the result of agricultural modernization, grain industry upgrading, and technological innovation. Its core objective is to improve grain cleaning efficiency and quality through mechanization and automation, meeting the needs of the entire supply chain from field to table.

[0003] In existing equipment, air separation is a key method for separating light impurities using airflow buoyancy. When processing grain, some devices may rely solely on screens to filter heavy impurities, but light impurities can adhere to the grain surface or become trapped between particles, making thorough removal difficult with simple sieving. Dust generated during grain processing, if not promptly removed, will accumulate inside the equipment and harm the surrounding environment, resulting in incomplete overall impurity removal, reduced air separation efficiency, and even forcing equipment shutdown for cleaning. This also increases workshop cleaning and maintenance costs. During grain air separation, fine impurities such as mud, straw, and stones may remain, accumulating on the screen and clogging the sieve holes. Unseparated hard impurities enter subsequent equipment with the grain, accelerating wear on transmission components and pipe walls. Operators need to frequently manually clean large particles, increasing operational difficulty, leading to decreased grain throughput, frequent shutdowns for cleaning, disrupting continuous production, increasing maintenance costs, and shortening equipment lifespan. Utility Model Content

[0004] The main purpose of this utility model is to provide a grain impurity removal and air separation device, which can effectively solve the problems of incomplete overall impurity removal, reduced air separation effect, and even forced equipment shutdown for cleaning. It also increases workshop cleaning and maintenance costs, reduces grain throughput, requires frequent shutdowns for cleaning, affects continuous production, increases maintenance costs, and shortens equipment lifespan.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grain impurity removal and air separation device, including a processing box, a feeding box fixedly connected to the bottom of the processing box, a bottom box fixedly connected to the top of the feeding box, and an air separation and dust collection mechanism provided inside the processing box and the feeding box;

[0006] The air separation dust collection mechanism includes: a first fan box, a second fan box, a first fixed plate, a first blower, and two cylindrical bodies. The outer side of the first fan box extends through the front side wall of the processing box. A first diverter plate is fixedly connected to the interior of the rear side wall of the first fan box. A dustproof frame is fixedly connected to the interior of the front side wall of the first fan box. A coarse filter plate is provided inside the processing box. A fine filter plate is provided at the bottom of the coarse filter plate. A discharge inclined plate is provided at the bottom of the fine filter plate. The left and right sides of the discharge inclined plate are fixedly connected to the left and right side walls of the interior of the feeding box. The front side of the discharge inclined plate extends through the interior of the front side wall of the feeding box. The outer side of the second fan box extends through the front side wall of the feeding box. The second fan box is located at the top front side of the discharge inclined plate. A second diverter plate is fixedly connected to the interior of the rear side wall of the second fan box. A guide cover is fixedly connected to the top of the rear side wall of the second fan box.

[0007] Furthermore, the right side wall of the first fixed plate is fixedly connected to the left rear side of the base box, the bottom of the first blower is fixedly connected to the top of the first fixed plate, the input end of the first blower is fixedly connected to a transition box, the bottom walls of the transition box are all connected to cylindrical bodies, and the bottoms of the two cylindrical bodies are all fixedly connected to cones.

[0008] Furthermore, a discharge valve is fixedly connected to the bottom of each of the two cones, and an air inlet pipe is connected to the air inlet of each of the two cylinders. A dust collection box is connected to the outer side of the front wall of the air inlet pipe. The outer side of the front wall of the dust collection box is connected to the top of the rear wall of the processing box. A guide plate is fixedly connected to the bottom wall of the dust collection box, and a support plate is fixedly connected to the outer side of the bottom of the two guide plates. The bottom of the support plate is fixedly connected to the top of the rear wall of the bottom box.

[0009] Furthermore, a guide plate is fixedly connected to the top of the discharge ramp, and a dust discharge pipe is connected through the rear interior of the discharge ramp. The bottom of the dust discharge pipe is located inside the bottom box, and a dust storage box is located inside the bottom box. A door panel is located inside the left side wall of the bottom box, and the right side wall of the door panel is fixedly connected to the left side wall of the dust storage box. A handle is fixedly connected to the right side wall of the door panel. A base is fixedly connected to the bottom of the bottom box, and a control panel is fixedly connected to the right side wall of the processing box.

[0010] Furthermore, a support column is fixedly connected to the left side wall of the processing box, a centrifugal fan is installed at the top of the support column, a connecting pipe is fixedly connected to the input end of the centrifugal fan, a feed hopper is fixedly connected to the left side wall of the processing box, the front end of the connecting pipe is connected through to the bottom rear side of the feed hopper, a conveying pipe is fixedly connected to the output end of the centrifugal fan, the right end of the conveying pipe is connected through to the top of the processing box, and the bottom of the right end of the conveying pipe is set on the top of the coarse filter plate.

[0011] Furthermore, each of the four connecting plates is fixedly connected to the top wall of the processing box, and each of the four connecting plates is fixedly connected to the bottom wall of the coarse filter plate and the left and right sides of the coarse filter plate. Each of the two upper and lower first connecting blocks is fixedly connected to the rear side wall of the first connecting block. Each of the two upper and lower second connecting blocks is fixedly connected to the left and right sides of the coarse filter plate and the fine filter plate, and each of the two upper and lower second connecting blocks is fixedly connected to the rear side wall of the second connecting block. A second fixing plate is fixedly connected to the top left side of the coarse filter plate.

[0012] Furthermore, a protective box is fixedly connected to the top of the second fixed plate, and a bidirectional motor is installed inside the protective box. The bottom wall of the bidirectional motor is fixedly connected to the top of the second fixed plate, and rotating rods are fixedly connected to the left and right output ends of the bidirectional motor. Semicircular blocks are fixedly connected to the top of the rear side wall of the fine filter plate.

[0013] Furthermore, each of the two rotating rods has an eccentric wheel fixedly connected to its other end, and a support rod is rotatably connected to the outer side wall of each of the two eccentric wheels. A connecting rod is provided inside each of the two semicircular blocks, and the rear sides of the two support rods are rotatably connected to the outer sides of the left and right ends of the connecting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model, through its air-separation dust collection mechanism, solves the problems of incomplete overall impurity removal, reduced air-separation effect, and even forced equipment shutdown for cleaning, while also increasing workshop cleaning and maintenance costs. The dust collection box operates synchronously with the first blower, generating suction through the air inlet pipe to form a directional airflow within the processing box. Guided by the guide plate on the bottom wall of the dust collection box, fine impurities blown up by the airflow follow the airflow direction, passing through the dust collection box and air inlet pipe into the interior of the cylindrical body. The conical body at the bottom of the cylindrical body cooperates with the discharge valve to achieve temporary storage and periodic discharge of impurities, thereby effectively improving equipment operation smoothness, reducing blockage problems, decreasing the frequency of shutdown for cleaning, and increasing production efficiency.

[0016] 2. By incorporating a coarse filter plate, connecting plate, second connecting block, second spring plate, bidirectional motor, eccentric wheel, connecting rod, and support rod, this system effectively addresses the problems that lead to decreased grain throughput, frequent machine shutdowns for cleaning, disruption of continuous production, increased maintenance costs, and shortened equipment lifespan. The system rotates the rotating rods on both sides, causing the eccentric wheel at the end of each rod to rotate as well. The eccentric wheel is connected to the connecting rod via the support rod, which is fixed within a semi-circular block on the rear side wall of the fine filter plate. When the eccentric wheel rotates, the support rod pushes the connecting rod, causing the fine filter plate to reciprocate and vibrate. This effectively improves the filter plate's permeability, accelerates the separation of grain and impurities, shortens processing time, and increases the impurity removal rate.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the grain impurity removal and air separation device proposed in this utility model;

[0019] Figure 2 This is a rear structural diagram of the grain impurity removal and air separation device proposed in this utility model;

[0020] Figure 3 This is a cross-sectional view of the internal structure of the processing box of the grain impurity removal and air separation device proposed in this utility model;

[0021] Figure 4 This is a structural diagram of the dust discharge pipe of the grain impurity removal and air separation device proposed in this utility model;

[0022] Figure 5 This is a structural diagram of the front side of the first fan box of the grain impurity removal and air separation device proposed in this utility model;

[0023] Figure 6 This is a structural diagram of the first diversion plate of the grain impurity removal and air separation device proposed in this utility model;

[0024] Figure 7 This is a schematic diagram of the guide cover of the grain impurity removal and air separation device proposed in this utility model;

[0025] Figure 8 This is a structural diagram of the dust storage box of the grain impurity removal and air separation device proposed in this utility model;

[0026] Figure 9 This is a structural diagram of the cylindrical body of the grain impurity removal and air separation device proposed in this utility model;

[0027] Figure 10 This is a cross-sectional view of the internal structure of the cylindrical body of the grain impurity removal and air separation device proposed in this utility model;

[0028] Figure 11 This is a structural diagram of the coarse filter plate of the grain impurity removal air separation device proposed in this utility model;

[0029] Figure 12 This is a structural diagram of the rotating rod of the grain impurity removal and air separation device proposed in this utility model;

[0030] Figure 13 This is a structural diagram of a semi-circular block in the grain impurity removal and air separation device proposed in this utility model.

[0031] Legend:

[0032] 1. Processing box; 2. Feeding box; 3. Air separation and dust collection mechanism; 301. First blower box; 302. First diverter plate; 303. Dustproof frame; 304. Coarse filter plate; 305. Fine filter plate; 306. Discharge inclined plate; 307. Second blower box; 308. Second diverter plate; 309. Guide cover; 310. First fixed plate; 311. First blower; 312. Transition box; 313. Cylindrical body; 314. Conical body; 315. Discharge valve; 316. Air inlet pipe; 317. Dust collection box; 318. Guide plate; 319. Flow deflector. 320. Dust exhaust pipe; 4. Base box; 5. Support plate; 6. Dust collection box; 7. Door panel; 8. Handle; 9. Base; 10. Control panel; 11. Support column; 12. Centrifugal fan; 13. Connecting pipe; 14. Feed hopper; 15. Conveying pipe; 16. First connecting block; 17. Joining plate; 18. First spring plate; 19. Second connecting block; 20. Second spring plate; 21. Second fixing plate; 22. Protective box; 23. Bidirectional motor; 24. Rotating rod; 25. Eccentric wheel; 26. Semicircular block; 27. Connecting rod; 28. Support rod. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0034] like Figure 1 - Figure 12 As shown: A grain impurity removal and air separation device includes a processing box 1, a feeding box 2 fixedly connected to the bottom of the processing box 1, and a bottom box 4 fixedly connected to the top of the feeding box 2. An air separation and dust collection mechanism 3 is installed inside the processing box 1 and the feeding box 2. The feeding box 2 fixedly connected to the top of the processing box 1 guides the processed grain and serves as a circulation mechanism. The bottom box 4 is used to collect impurities and particles that have been processed.

[0035] The air separation dust collection mechanism 3 includes: a first fan box 301, a second fan box 307, a first fixed plate 310, a first blower 311, and two cylindrical bodies 313. The outer side of the first fan box 301 extends through the front side wall of the processing box 1. A first diverter plate 302 is fixedly connected to the inside of the rear side wall of the first fan box 301. A dustproof frame 303 is fixedly connected to the inside of the front side wall of the first fan box 301. A coarse filter plate 304 is provided inside the processing box 1, and a fine filter plate is provided at the bottom of the coarse filter plate 304. Plate 305, with a discharge inclined plate 306 at its bottom, has its left and right sides fixedly connected to the inner left and right side walls of the feeding box 2. When grain falls onto the coarse filter plate 304, the first fan box 301 is activated. The air generated by the first fan box 301 blows towards the rear surfaces of the coarse filter plate 304 and the fine filter plate 305, blowing the grain inside the coarse filter plate 304 and the fine filter plate 305 and removing impurities from the grain. The dustproof frame 303 at the front of the first fan box 301 prevents external impurities from entering the interior of the first fan box 301, and the first diverter plate 302 at the rear of the first fan box 301 diverts the generated air, causing the air to blow backward through the interior of the first diverter plate 302.

[0036] The front side of the discharge inclined plate 306 is connected to the inside of the front side wall of the feeding box 2. After the grain is screened by the fine filter plate 305, the grain will fall into the inside of the discharge inclined plate 306. The inclination of the discharge inclined plate 306 is used to make the grain flow towards the front of the processing box 1 and discharge the grain into the processing box 1. The outer side of the second fan box 307 is connected to the front side wall of the feeding box 2. The second fan box 307 is located at the top of the front side of the discharge inclined plate 306. The rear side wall of the second fan box 307 is fixedly connected to the second diverter plate 308. The top of the rear side wall of the second fan box 307 is fixedly connected to the guide cover 309. The second fan box 307 blows away the impurities. The second diverter plate 308 diverts the air generated by the second fan box 307, and the guide cover 309 at the top guides the air so that the air generated by the second fan box 307 blows towards the surface of the discharge inclined plate 306.

[0037] The right side wall of the first fixed plate 310 is fixedly connected to the left rear side of the base box 4. The bottom of the first blower 311 is fixedly connected to the top of the first fixed plate 310. The input end of the first blower 311 is fixedly connected to the transition box 312. The bottom walls of the transition box 312 are all connected to cylindrical bodies 313. The bottoms of the two cylindrical bodies 313 are all fixedly connected to conical bodies 314. The bottoms of the two conical bodies 314 are all fixedly connected to unloading valves 315. The air inlets of the two cylindrical bodies 313 are all connected to air inlet pipes 316. The outer side of the front wall of the air inlet pipe 316 is connected to a dust collection box 317. The outer side of the front wall of the dust collection box 317 is connected through to the top of the rear wall of the processing box 1. The bottom wall of the dust collection box 317 is fixedly connected to a guide plate 318. The outer side of the bottom of the two guide plates 318 is fixedly connected to a support plate 5. The bottom of the support plate 5 is fixedly connected to the top of the rear wall of the base box 4. When the first blower 311 is started, the air is diverted through the transition box 312 to the two cylindrical bodies 313, and then enters the processing box 1 through the air inlet pipe 316 and the dust collection box 317. The guide plate 318 of the dust collection box 317 guides the airflow to rise evenly, forming an upward wind field inside the processing box 1.

[0038] Due to the difference in density and mass between grains and impurities, lighter impurities are blown up by the wind and move towards the top of the processing box 1 through the gap between the fine filter plate 305 and the coarse filter plate 304. Heavier grain particles overcome airflow resistance and move towards the rear along the slope of the coarse filter plate 304 and the fine filter plate 305. The larger impurity particles are then collected inside the bottom box 4 in the area between the rear side wall of the discharge inclined plate 306 and the rear side wall of the discharge box 2.

[0039] A guide plate 319 is fixedly connected to the top of the discharge inclined plate 306. A dust discharge pipe 320 is connected through the rear interior of the discharge inclined plate 306. After passing through the coarse filter plate 304 and the fine filter plate 305, the grain falls onto the discharge inclined plate 306, which guides the grain to flow towards the front of the processing box 1 and discharge it into the processing box 1. When the grain falls onto the discharge inclined plate 306, the guide plate 319 is provided at the rear bottom of the fine filter plate 305 to guide the grain and prevent it from entering the dust discharge pipe 320 when it falls onto the right side of the discharge inclined plate 306. When the grain is discharged, the second fan box 307 is activated to clean the grain. Secondary air separation is used because some impurities remain in the grain when it falls onto the discharge inclined plate 306. These impurities are blown away by the second fan box 307. The air generated by the second fan box 307 is diverted by the second diverter plate 308, and the air is guided by the top guide cover 309. The air generated by the second fan box 307 blows towards the surface of the discharge inclined plate 306. When the second fan box 307 blows, the air will carry these impurities to the rear and enter the dust discharge pipe 320 inside the rear side of the discharge inclined plate 306 through the bottom of the guide plate 319. The dust discharge pipe 320 discharges these impurities into the interior of the bottom box 4 for collection.

[0040] The bottom of the dust exhaust pipe 320 is located inside the bottom box 4. The bottom box 4 contains a dust collection box 6. A door panel 7 is located inside the left side wall of the bottom box 4. The right side wall of the door panel 7 is fixedly connected to the left side wall of the dust collection box 6. A handle 8 is fixedly connected to the right side wall of the door panel 7. (The last sentence appears to be incomplete and possibly refers to a different process.) Figure 3 and 4 As shown, due to the inclined arrangement of the coarse filter plate 304 and the fine filter plate 305, these impurities slide backward along the surfaces of the coarse filter plate 304 and the fine filter plate 305 under the action of gravity, and finally fall into the bottom box 4 through the rear channel inside the feed box 2. The dust collection box 6 inside the bottom box 4 is responsible for collecting these impurities. The staff can remove the dust collection box 6 from the inside of the bottom box 4 for cleaning through the door panel 7 and the handle 8. In addition, the bottom of the discharge valve 315 is connected to the inside of the support plate 5, so that the impurities collected inside the cylindrical body 313 and the conical body 314 will be transported to the inside of the bottom box 4 through the discharge valve 315.

[0041] The bottom of the base box 4 is fixedly connected to a base 9, and the right side wall of the processing box 1 is fixedly connected to a control panel 10. The base 9 at the bottom of the base box 4 provides bottom support for the entire device, and the control panel 10 controls the entire device.

[0042] like Figure 1 - Figure 4As shown, a support column 11 is fixedly connected to the left side wall of the processing box 1, and a centrifugal fan 12 is installed on the top of the support column 11. The support column 11 is used to support and fix the centrifugal fan 12 at the bottom. A connecting pipe 13 is fixedly connected to the input end of the centrifugal fan 12. A feed hopper 14 is fixedly connected to the left side wall of the processing box 1. The front end of the connecting pipe 13 is connected to the bottom rear side of the feed hopper 14. A conveying pipe 15 is fixedly connected to the output end of the centrifugal fan 12. The right end of the conveying pipe 15 is connected to the top of the processing box 1. The bottom of the right end of the conveying pipe 15 is set on the top of the coarse filter plate 304. After the grain is poured into the feed hopper 14, the centrifugal fan 12 is started. The input end of the centrifugal fan 12 will send suction through the connecting pipe 13 to the inside of the feed hopper 14 to suck up the grain inside the feed hopper 14. The sucked grain will be conveyed to the inside of the processing box 1 through the conveying pipe 15 on the output end of the centrifugal fan 12 and fall onto the coarse filter plate 304 to process the grain.

[0043] All the top walls of the processing box 1 are fixedly connected with connecting plates 17. The bottom walls of the four connecting plates 17 and the left and right sides of the coarse filter plate 304 are fixedly connected with first connecting blocks 16. The rear side walls of every two upper and lower first connecting blocks 16 are fixedly connected with first spring plates 18. The coarse filter plate 304 is fixed inside the processing box 1 by connecting the first connecting blocks 16 on the left and right sides of the coarse filter plate 304 and the bottom walls of the connecting plates 17 with the first spring plates 18. Second connecting blocks 19 are fixedly connected to both sides of the coarse filter plate 304 and both sides of the fine filter plate 305. Second spring plates 20 are fixedly connected to the rear side walls of every two upper and lower second connecting blocks 19. A second fixing plate 21 is fixedly connected to the top front side of the coarse filter plate 304. The second spring plates 20 are connected by the second connecting blocks 19 on the left and right side walls of the coarse filter plate 304 and the left and right side walls of the fine filter plate 305, thereby fixing the fine filter plate 305 to the bottom of the coarse filter plate 304. The grain is sieved by the fine filter plate 305 and the coarse filter plate 304. The top device is supported by the second fixing plate 21 on the top front side of the coarse filter plate 304.

[0044] A protective box 22 is fixedly connected to the top of the second fixed plate 21. A bidirectional motor 23 is installed inside the protective box 22. The bottom wall of the bidirectional motor 23 is fixedly connected to the top of the second fixed plate 21. Rotating rods 24 are fixedly connected to the left and right output ends of the bidirectional motor 23. Semicircular blocks 26 are fixedly connected to the top of the rear side wall of the fine filter plate 305. Eccentric wheels 25 are fixedly connected to the other ends of the two rotating rods 24. Support rods 28 are rotatably connected to the outer side walls of the two eccentric wheels 25. Connecting rods 27 are installed inside the two semicircular blocks 26. The rear sides of the two support rods 28 are rotatably connected to the outer sides of the left and right ends of the connecting rods 27. When the grain falls onto the coarse filter plate 304, the bidirectional motor 23 is started. The two output ends of the bidirectional motor 23 drive the rotating rods 24 on the left and right sides to rotate. The eccentric wheels 25 at the ends of the rotating rods 24 rotate accordingly. The eccentric wheels 25 are connected to the connecting rods 27 through the support rods 28. The connecting rods 27 are fixed inside the semicircular blocks 26 on the rear side wall of the fine filter plate 305. When the eccentric wheel 25 rotates, the support rod 28 pushes the connecting rod 27 to sway inside the semicircular block 26. Through the setting of the second spring plate 20 and the first spring plate 18, an elastic connection structure is formed. When the bidirectional motor 23 drives the eccentric wheel 25 to vibrate the fine filter plate 305, the spring plate can absorb and buffer the impact force generated by the vibration, avoid the vibration from being directly transmitted and causing damage to the equipment, and at the same time maintain the stable vibration state of the filter plate, so that the grain rolls and loosens evenly on the filter plate, which helps to separate impurities and makes the fine filter plate 305 and the coarse filter plate 304 produce a reciprocating vibration effect.

[0045] It should be noted that this utility model is a grain impurity removal and air separation device. First, the first fan box 301, the second fan box 307, the first blower 311, the centrifugal fan 12, the control panel 10 and the bidirectional motor 23 are connected to an external power source to supply power to the device.

[0046] Grain enters the device through the feed hopper 14. The centrifugal fan 12 draws the grain from the feed hopper 14 through the connecting pipe 13, and then transports it to the processing box 1 through the conveying pipe 15, where it falls onto the top of the coarse filter plate 304. The coarse filter plate 304 performs preliminary filtration of the grain, trapping larger particles of impurities such as straw and stones, while the grain continues to fall through the coarse filter plate 304.

[0047] At this time, the first blower box 301 is activated, and the first diverter plate 302 inside it evenly guides the blown airflow to the surfaces of the coarse filter plate 304 and the fine filter plate 305. The airflow blows away the fine impurities in the grain on the filter plates, causing them to detach from the grain surface. The dust collection box 317 operates synchronously with the first blower 311, generating suction through the air inlet pipe 316 to form a directional airflow within the processing box 1. Guided by the guide plate 318 on the bottom wall of the dust collection box 317, the fine impurities blown up by the airflow follow the airflow direction, passing through the dust collection box 317 and the air inlet pipe 316 into the interior of the cylindrical body 313. The cone 314 at the bottom of the cylindrical body 313 cooperates with the discharge valve 315 to achieve temporary storage and periodic discharge of impurities.

[0048] After passing through the coarse filter plate 304 and the fine filter plate 305, the grain falls onto the discharge inclined plate 306. The discharge inclined plate 306 guides the grain, causing it to flow towards the front of the processing box 1 and exit. When the grain falls onto the discharge inclined plate 306, a guide plate 319 is installed at the rear bottom of the fine filter plate 305 to guide the grain and prevent it from entering the dust discharge pipe 320 when it falls onto the right side of the discharge inclined plate 306. When the grain is discharged, the second fan box 307 is activated to perform secondary air separation on the grain. This is because some residue may remain in the grain when it falls onto the discharge inclined plate 306. Some impurities are retained and blown away by the second fan box 307. The air generated by the second fan box 307 is diverted by the second diverter plate 308 and guided by the top guide cover 309, so that the air generated by the second fan box 307 blows towards the surface of the discharge ramp 306. When the second fan box 307 blows, the air will carry these impurities to the rear side and enter the dust discharge pipe 320 inside the rear side of the discharge ramp 306 through the bottom of the guide plate 319. The dust discharge pipe 320 discharges these impurities into the interior of the bottom box 4 for collection.

[0049] Heavier impurities that fail to be sucked into the dust collection box 317 are allowed to slide down the surfaces of the filter plates 304, fine filter plates 305, and discharge inclined plates 306 under the influence of gravity, thanks to the inclined arrangement of these plates. They then pass through the rear channel inside the discharge box 2 and finally fall into the bottom box 4. The dust collection box 6 inside the bottom box 4 collects these impurities, and workers can open it for cleaning via the door panel 7 and handle 8.

[0050] Grain enters through the feed hopper 14, and the centrifugal fan 12 transports the grain through the connecting pipe 13 and the conveying pipe 15 into the processing box 1, where it falls evenly onto the coarse filter plate 304. At this time, the bidirectional motor 23 starts, driving the rotating rods 24 on both sides to rotate, and the eccentric wheel 25 at the end of the rotating rod 24 rotates accordingly. The eccentric wheel 25 is connected to the connecting rod 27 through the support rod 28, and the connecting rod 27 is fixed in the semi-circular block 26 on the rear side wall of the fine filter plate 305. When the eccentric wheel 25 rotates, the support rod 28 pushes the connecting rod 27, causing the fine filter plate 305 to reciprocate.

[0051] The vibration of the fine filter plate 305 is transmitted to the coarse filter plate 304 through the second connecting block 19 and the second spring plate 20. The coarse filter plate 304 is then connected to the connecting plate 17 at the top of the processing box 1 through the first connecting block 16 and the first spring plate 18, forming an elastic support structure to ensure stable vibration of the coarse filter plate 304 and the fine filter plate 305. The vibration causes the grain to tumble and loosen on the filter plate, accelerating the separation of large particles from the grain. The large particles are trapped by the coarse filter plate 304, while the grain falls through the coarse filter plate 304 onto the fine filter plate 305. After the grain is processed, it falls onto the discharge inclined plate 306 to discharge the grain into the interior of the processing box 1, thereby effectively maintaining the permeability of the filter plate. The vibration accelerates the separation of grain and impurities, shortens the processing time, and improves the impurity removal rate.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grain impurity removal and air separation device, comprising a processing box (1), characterized in that: The bottom of the processing box (1) is fixedly connected to the feeding box (2), and the top of the feeding box (2) is fixedly connected to the bottom box (4). The processing box (1) and the feeding box (2) are equipped with a wind separation dust collection mechanism (3). The air separation dust collection mechanism (3) includes: a first fan box (301), a second fan box (307), a first fixed plate (310), a first blower (311), and two cylindrical bodies (313). The outer side of the first fan box (301) extends through the front side wall of the processing box (1). A first diverter plate (302) is fixedly connected to the interior of the rear side wall of the first fan box (301). A dustproof frame (303) is fixedly connected to the interior of the front side wall of the first fan box (301). A coarse filter plate (304) is provided inside the processing box (1). A fine filter plate (305) is provided at the bottom of the coarse filter plate (304). A discharge ramp (306) is provided at the bottom of the plate (305). The left and right sides of the discharge ramp (306) are fixedly connected to the left and right side walls inside the feeding box (2). The front side of the discharge ramp (306) is connected through to the inside of the front side wall of the feeding box (2). The outer side of the second fan box (307) is connected through to the front side wall of the feeding box (2). The second fan box (307) is located at the top front side of the discharge ramp (306). A second diverter plate (308) is fixedly connected inside the rear side wall of the second fan box (307). A guide cover (309) is fixedly connected to the top rear side wall of the second fan box (307).

2. The grain impurity removal and air separation device according to claim 1, characterized in that: The right side wall of the first fixed plate (310) is fixedly connected to the left rear side of the bottom box (4). The bottom of the first blower (311) is fixedly connected to the top of the first fixed plate (310). The input end of the first blower (311) is fixedly connected to a transition box (312). The bottom wall of the transition box (312) is connected to a cylindrical body (313). The bottom of the two cylindrical bodies (313) is fixedly connected to a cone (314).

3. The grain impurity removal and air separation device according to claim 2, characterized in that: The bottom of each of the two cones (314) is fixedly connected to a discharge valve (315), and the air inlets of the two cylinders (313) are connected to an air inlet pipe (316). The outer side of the front wall of the air inlet pipe (316) is connected to a dust collection box (317). The outer side of the front wall of the dust collection box (317) is connected to the top of the rear wall of the processing box (1). The bottom wall of the dust collection box (317) is fixedly connected to a guide plate (318). The outer side of the bottom of the two guide plates (318) is fixedly connected to a support plate (5). The bottom of the support plate (5) is fixedly connected to the top of the rear wall of the bottom box (4).

4. The grain impurity removal and air separation device according to claim 1, characterized in that: A guide plate (319) is fixedly connected to the top of the discharge inclined plate (306). A dust discharge pipe (320) is connected through the rear side of the discharge inclined plate (306). The bottom of the dust discharge pipe (320) is located inside the bottom box (4). A dust storage box (6) is located inside the bottom box (4). A door panel (7) is located inside the left side wall of the bottom box (4). The right side wall of the door panel (7) is fixedly connected to the left side wall of the dust storage box (6). A handle (8) is fixedly connected to the right side wall of the door panel (7). A base (9) is fixedly connected to the bottom of the bottom box (4). A control panel (10) is fixedly connected to the right side wall of the processing box (1).

5. The grain impurity removal and air separation device according to claim 4, characterized in that: A support column (11) is fixedly connected to the left side wall of the processing box (1). A centrifugal fan (12) is installed on the top of the support column (11). A connecting pipe (13) is fixedly connected to the input end of the centrifugal fan (12). A feed hopper (14) is fixedly connected to the left side wall of the processing box (1). The front end of the connecting pipe (13) is connected through to the bottom rear side of the feed hopper (14). A conveying pipe (15) is fixedly connected to the output end of the centrifugal fan (12). The right end of the conveying pipe (15) is connected through to the top of the processing box (1). The bottom of the right end of the conveying pipe (15) is set on the top of the coarse filter plate (304).

6. The grain impurity removal and air separation device according to claim 1, characterized in that: All the top walls of the processing box (1) are fixedly connected with connecting plates (17). The bottom walls of the four connecting plates (17) and the left and right sides of the coarse filter plate (304) are fixedly connected with first connecting blocks (16). The rear side walls of every two upper and lower first connecting blocks (16) are fixedly connected with first spring plates (18). The left and right sides of the coarse filter plate (304) and the left and right sides of the fine filter plate (305) are fixedly connected with second connecting blocks (19). The rear side walls of every two upper and lower second connecting blocks (19) are fixedly connected with second spring plates (20). The top left side of the coarse filter plate (304) is fixedly connected with a second fixing plate (21).

7. The grain impurity removal and air separation device according to claim 6, characterized in that: A protective box (22) is fixedly connected to the top of the second fixed plate (21). A bidirectional motor (23) is installed inside the protective box (22). The bottom wall of the bidirectional motor (23) is fixedly connected to the top of the second fixed plate (21). Rotating rods (24) are fixedly connected to the left and right output ends of the bidirectional motor (23). Semicircular blocks (26) are fixedly connected to the top of the rear side wall of the fine filter plate (305).

8. The grain impurity removal and air separation device according to claim 7, characterized in that: The other ends of the two rotating rods (24) are fixedly connected to eccentric wheels (25), and the outer walls of the two eccentric wheels (25) are rotatably connected to support rods (28). The two semicircular blocks (26) are provided with connecting rods (27), and the rear sides of the two support rods (28) are rotatably connected to the outer sides of the left and right ends of the connecting rods (27).

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