Wind Screen Cleaning and Seed Selection Machine

Abstract

The present invention discloses an all-in-one wind-screen cleaning and seed selection machine, which is applied in the field of seed screening. The main points of its technical solution are: it comprises a box body, a feeding mechanism arranged on the top of the box body, a screening mechanism arranged in the box body and an air selection system, and is characterized in that: the screening mechanism comprises an upper screen assembly, a middle screen assembly and a lower screen assembly distributed in a broken line shape; the upper screen assembly comprises a first screen plate, a second screen plate and a first flow plate stacked in a vertical direction, the sieve hole diameters on the first screen plate and the second screen plate are both d1, a semi-guide plate is provided at one end of the first screen plate facing the feeding mechanism, a plurality of semi-guide plates are provided along the width direction of the first screen plate, and a first impurity removal channel extending out of the box body is provided at one end of the first flow plate away from the feeding mechanism; the technical effect is: large seeds and small seeds can be screened quickly and conveniently while removing impurities in the seeds, so as to facilitate the operator to distinguish sowing.

Description

Technical Field

[0001] The invention relates to the technical field of seed screening, and in particular to an air-screen type cleaning and seed selection integrated machine. Background Art

[0002] The function of the wind screen type cleaner is to remove light impurities and dust as well as large and small debris mixed in granular materials. It is often used for seed cleaning and processing. The wind screen type cleaner is mainly composed of a frame, a feeding bin, a feeding device, a screen box, a screen box drive device, a lower fan, an upper fan, front and rear air selection channels, and front and rear sedimentation chambers. When working, the material is fed from the feeding bin on the top of the machine through the feeding device, and then falls into the screen box through the front air selection channel. The clean material after air screening is discharged from the discharge port. During the material flow and screening process, light impurities and dust are discharged from the machine through the front and rear air selection channels and the front and rear sedimentation chambers under the action of the wind field formed by the upper fan and the lower fan.

[0003] With the development of agricultural technology, an efficient planting method has emerged, which is characterized by sowing large seeds and small seeds separately to increase yield. However, in order to improve efficiency, large and small rice are usually harvested together by machines, which makes it difficult to separate the seeds and sow them again in the later stage. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a wind-screen type cleaning and seed selection all-in-one machine, which can remove impurities in seeds and quickly and conveniently screen large seeds and small seeds to facilitate the operator to distinguish the sowing effects.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an air-screen type cleaning and seed selection integrated machine, comprising a box, a feeding mechanism arranged on the top of the box, a screening mechanism arranged in the box and an air selection system, characterized in that: the screening mechanism comprises an upper screen assembly, a middle screen assembly and a lower screen assembly distributed in a broken line shape; the upper screen assembly comprises a first screen plate, a second screen plate and a first flow plate stacked in a vertical direction, the diameters of the screen holes on the first screen plate and the second screen plate are both d1, a semi-guide plate is provided at one end of the first screen plate facing the feeding mechanism, and the semi-guide plate is arranged along the width direction of the first screen plate There are multiple ones, the first flow plate is provided with a first impurity removal channel extending out of the box body at one end away from the feeding mechanism; the middle screen assembly includes a third screen plate, the diameter of the screen holes on the third screen plate is set to d2, and the end of the third screen plate away from the docking point with the upper screen assembly is provided with a large particle discharge channel extending out of the box body; the lower screen assembly includes a fifth screen plate, the diameter of the screen holes on the fifth screen plate is set to d3, and the box body is provided with a small particle discharge port at one end of the fifth screen plate away from the docking point with the middle screen assembly; the particle size of large seeds is set to a1, and the particle size of small seeds is set to a2, then a1>d2>a2>d1, a2>d3.

[0006] Through the above technical scheme, the harvested seeds are transported to the screening mechanism in the box through the feeding mechanism for screening. At this time, the seeds first fall to the semi-guide plate, and the semi-guide plate transports part of the seeds to the first screen plate, and the other seeds are transported to the second screen plate. At this time, large seeds and small seeds flow along the first screen plate and the second screen plate and fall onto the third screen plate, and small particles of impurities pass through the first screen plate and the second screen plate and flow along the first flow plate to the first impurity removal channel and are discharged from the inside of the box; small seeds fall onto the fifth screen plate through the third screen plate and are discharged from the small-grain discharge port, and large seeds flow along the third screen plate to the large-grain discharge channel for discharge, thereby quickly and conveniently screening the seeds, and outputting large seeds and small seeds at one time, so that the operator can distinguish between sowing.

[0007] The present invention is further configured as follows: a fourth sieve plate is provided above the fifth sieve plate, the diameter of the sieve holes on the fourth sieve plate is set to d4, d4>a2, and a second impurity removal channel is provided at one end of the fourth sieve plate away from the docking point with the middle sieve assembly.

[0008] Through the above technical solution, the small seeds fall on the fourth sieve plate after passing through the third sieve plate. At this time, the small seeds can pass through the fourth sieve plate and fall onto the fifth sieve plate, and then be discharged from the small particle outlet. The larger impurities that fall with the small seeds are discharged from the second impurity removal channel along the fourth sieve plate, further improving the purity of the small seeds.

[0009] The present invention is further configured such that both ends of the large-particle discharge channel extend out of the box body and are connected to a large-particle discharge pipe.

[0010] Through the above technical scheme, large-grain seeds after screening are prone to blockage due to their large particle size. Both ends of the large-grain discharge channel are extended out of the box and connected with large-grain discharge pipes, which can increase the number of discharge ports and discharge speed of large-grain seeds, thereby reducing the possibility of large-grain seeds blocking the large-grain discharge channel.

[0011] The present invention is further configured such that: the bottom of the discharge channel extends obliquely downward from the middle toward the two large-particle discharge pipes.

[0012] Through the above technical solution, large seeds that fall on the discharge channel can slide evenly to both ends along the inclined surface at the bottom of the discharge channel, thereby reducing the possibility of large seeds accumulating on the discharge channel, and can evenly discharge large seeds to both ends, reducing the possibility of single-end blockage of the discharge channel.

[0013] The present invention is further configured as follows: a rubber ball rack is provided between the first sieve plate and the second sieve plate, and a plurality of rubber balls are placed in the rubber ball rack.

[0014] Through the above technical scheme, when the first sieve plate and the second sieve plate are vibrating, the rubber ball rack and the rubber ball can continuously hit the first sieve plate and the second sieve plate, thereby facilitating the seeds or impurities stuck in the sieve holes to be ejected, thereby greatly reducing the possibility of the first sieve plate and the second sieve plate being blocked and improving the screening efficiency. In addition, the rubber ball rack and the rubber ball are soft in texture and can play a buffering and protective role for the first sieve plate and the second sieve plate.

[0015] The present invention is further configured as follows: the feeding mechanism includes a feeding hopper, an electromagnetic feeding disk is provided at the discharge end of the feeding hopper inside the box body, a wind selection guide plate inclined toward the electromagnetic feeding disk is provided inside the box body, a feeding flow plate is provided below the wind selection guide plate, and the discharge end of the feeding flow plate faces the semi-guide plate.

[0016] Through the above technical solution, the operator can pour the seeds into the hopper, and then the seeds fall on the electromagnetic feeding plate, which vibrates and transports the seeds to the air selection guide plate, and the seeds then fall onto the feed flow plate and are transported to the semi-guide plate; in this process, the seeds can be evenly distributed along the width of the box body through the vibration of the electromagnetic feeding plate, so as to improve the distribution width and uniformity of the seeds when they fall on the upper screen assembly, and when the seeds fall to the air selection guide plate, the air selection system can more conveniently absorb large and light impurities in the seeds, reducing the possibility of these impurities falling with the seed flow.

[0017] The present invention is further configured as follows: the box body is provided with a baffle plate between the middle screen assembly and the lower screen assembly, the bottom of the baffle plate extends toward the fourth screen plate and there is a gap between the baffle plate and the fourth screen plate, and a pressure sensor is provided on the baffle plate.

[0018] Through the above technical solution, the baffle plate can block the seed flow, thereby reducing the excessive distribution of seeds on the fourth screen plate. When the seed flow rate is too large, causing the seed flow to contact the pressure sensor, the pressure sensor controls the electromagnetic feeding plate to reduce the vibration rate, thereby reducing the feeding speed, so as to ensure the screening stability of the wind screen cleaning and seed selection machine.

[0019] The present invention is further configured as follows: a distribution plate is provided in the feed hopper, the distribution plate is rotatably connected to the wall of the feed port, and the thickness of the bottom of the distribution plate is greater than the thickness of the top.

[0020] Through the above technical solution, the distribution plate can quickly divert the seed flow to both sides of the feed hopper, so that the seeds are evenly distributed on both sides of the electromagnetic feeding disk, thereby increasing the distribution width of the seed flow.

[0021] The present invention is further configured as follows: the box body is provided with an air flow opening at a position corresponding to the air selection guide plate, and the air flow opening is connected to the air selection system.

[0022] Through the above technical solution, when the air selection system is extracting air, the air flow port can start to take in air. At this time, a horizontal diversion from right to left is formed between the air flow port and the air selection system, and the seed flow flows downwardly toward the air flow port. At this time, the wind flow and the seed flow are staggered, which is conducive to blowing out light and large impurities between the seeds in the air and extracting them into the air selection system, greatly improving the impurity removal efficiency, and can also break up the seed flow in the air, improving the distribution uniformity of the seed flow.

[0023] The present invention is further configured as follows: a filter frame is provided at the air flow outlet.

[0024] Through the above technical solution, the filter frame can filter the incoming wind, thereby reducing the possibility of impurities entering the box, and further reducing the possibility of secondary contamination of seeds by the external environment.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. It can remove impurities from seeds and quickly and conveniently screen large seeds and small seeds, so that operators can distinguish and sow them;

[0027] 2. The seeds can be evenly distributed along the width of the box through the vibration of the electromagnetic feeder, so as to improve the distribution width and uniformity of the seeds when they fall on the upper screen assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0029] Figure 2 It is a schematic diagram of the structure of the feeding hopper in this embodiment.

[0030] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0031] Figure 4 yes Figure 2 Enlarged view of part B in the middle.

[0032] Figure 5 This is a schematic diagram of the structure of the large particle discharge channel in this embodiment.

[0033] Figure 6 It is a structural schematic diagram of the present embodiment for reflecting the screening mechanism.

[0034] Figure 7 It is a schematic diagram of the structure of the rubber ball rack used in this embodiment.

[0035] Reference numerals: 1, box; 2, feeding mechanism; 21, feeding hopper; 22, electromagnetic feeding plate; 23, air selection guide plate; 24, feeding flow plate; 25, distribution plate; 26, rotating shaft; 27, rotating plate; 28, angle plate; 281, angle hole; 3, screening mechanism; 31, upper screen assembly; 311, first screen plate; 312, second screen plate; 313, first flow plate; 314, semi-guide plate; 315, first impurity removal Channel; 32, middle screen assembly; 321, third screen plate; 322, large particle discharge channel; 323, large particle discharge pipe; 33, lower screen assembly; 331, fourth screen plate; 332, fifth screen plate; 333, small particle discharge port; 334, second impurity removal channel; 4, air selection system; 5, rubber ball rack; 51, rubber ball; 6, material baffle plate; 61, pressure sensor; 7, airflow port; 71, filter frame; 8, observation window. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0037] Embodiment: A wind screen type cleaning machine, such as Figure 1 , including a box body 1, a feeding mechanism 2 arranged on the top of the box body 1, a screening mechanism 3 and a wind selection system 4 arranged in the box body 1, the screening mechanism 3 includes an upper screen assembly 31, a middle screen assembly 32 and a lower screen assembly 33 distributed in a broken line shape.

[0038] like Figure 2 and Figure 3The feeding mechanism 2 includes a feeding hopper 21 and an electromagnetic feeding disc 22 arranged at the discharge end of the feeding hopper 21. The feeding hopper 21 is large at the top and small at the bottom, so that the operator can pour seeds. A distribution plate 25 is arranged in the feeding hopper 21. The distribution plate 25 is thin at the top and thick at the bottom and is located in the middle of the feeding hopper 21, so that the seed flow can be quickly distributed to both sides, improving the uniformity of the seeds when discharged from the discharge end, and reducing the possibility of seeds being blocked at the discharge end of the feeding hopper 21. The distribution plate 25 is rotatably connected to the feeding hopper 21 through a rotating shaft 26. One end of the rotating shaft 26 extends out of the feeding hopper 21 and is connected to a rotating plate 27. An angle plate 28 is arranged on the outer wall of the feeding hopper 21. The angle plate 28 is provided with a plurality of angle holes 281 in a circular array with the rotating shaft 26 as the center of the circle. The rotating plate 27 is elastic and is connected to an angle column (not shown in the figure) connected to one of the angle holes 281. The operator can adjust the angle of the distribution plate 25 in the hopper 21 by inserting the angle column into the different angle holes 281, so as to reasonably distribute the seeds. The hopper 21 is also provided with an observation window 8 (such as Figure 1 ), the observation window 8 is made of transparent material to facilitate the operator to observe the specific situation in the hopper 21.

[0039] like Figure 2 and Figure 4 After the seeds fall on the electromagnetic feeding disk 22, the electromagnetic feeding disk 22 works and vibrates, thereby spreading the seeds evenly around and slowly conveying them downward. A wind selection guide plate 23 is provided inside the box body 1. The wind selection guide plate 23 is tilted downward toward the electromagnetic feeding disk 22. The seeds flow from the electromagnetic feeding disk 22 to the wind selection guide plate 23. At this time, large and light impurities such as empty shells and fluff in the seeds can be sucked away by the airflow in the wind selection system 4, thereby improving the cleanliness of the seeds. The box body 1 is provided with an airflow port 7 at the corresponding air selection guide plate 23, and the airflow port 7 is connected with the air selection system 4. When the air selection system 4 is extracting air, the airflow port 7 can start to take in air. At this time, a horizontal wind flow from right to left is formed between the airflow port 7 and the air selection system 4, and the seed flow flows downwardly toward the airflow port 7. At this time, the wind flow and the seed flow are staggered, which is conducive to blowing out the light and large impurities between the seeds in the air and drawing them into the air selection system 4, greatly improving the impurity removal efficiency, and this wind flow can also break up the seed flow in the air, improving the distribution uniformity of the seed flow. A metal filter frame 71 is provided at the airflow port 7, and the filter frame 71 can filter the incoming wind, thereby reducing the possibility of impurities entering the box body 1.

[0040] like Figure 1 and Figure 6 The upper screen assembly 31 includes a first screen plate 311, a second screen plate 312 and a first flow plate 313 stacked in a vertical direction. The first screen plate 311 is provided with a semi-guide plate 314 (such as Figure 3), a plurality of semi-guide plates 314 are arranged at equal intervals along the width direction of the first sieve plate 311, and the interval between two adjacent semi-guide plates 314 is the same as the width of the semi-guide plates 314, and a feed flow plate 24 is arranged below the wind selection guide plate 23, and the discharge end of the feed flow plate 24 faces the semi-guide plate 314, and the seed flow falls from the wind selection guide plate 23 to the feed flow plate 24, and the feed flow plate 24 then guides the seed flow to all the semi-guide plates 314. Therefore, when the seed flow falls from the feed mechanism 2, it can be evenly distributed on the first sieve plate 311 and the second sieve plate 312, thereby improving the screening efficiency. The diameters of the sieve holes on the first sieve plate 311 and the second sieve plate 312 are both d1, the particle size of large seeds is set to a1, and the particle size of small seeds is set to a2, and a1>d1>a2. At this time, large seeds and small seeds flow along the first sieve plate 311 and the second sieve plate 312 and fall to the middle sieve assembly 32, and small particle impurities pass through the first sieve plate 311 and the second sieve plate 312 and fall on the first flow plate 313. A first impurity removal channel 315 is provided at the lowest point of the first flow plate 313. Small particle impurities can flow along the first flow plate 313 to the first impurity removal channel 315 and be discharged from the interior of the box body 1.

[0041] like Figure 1 and Figure 6 The middle screen assembly 32 includes a third screen plate 321. The diameter of the screen holes on the third screen plate 321 is set to d2, a1>d2>a2, so that small seeds can pass through the third screen plate 321 and fall into the lower screen assembly 33, and large seeds move downward along the third screen plate 321. The end of the third screen plate 321 away from the docking point with the upper screen assembly 31 is provided with a large particle discharge channel 322 extending out of the box body 1 (such as Figure 5 ), large seeds can be discharged from the large-grain discharge channel 322, and the diameter of the large-grain discharge channel 322 is greater than 150 mm to ensure that large seeds can be discharged quickly. Both ends of the large-grain discharge channel 322 extend out of the box body 1 and are connected to large-grain discharge pipes 323, and the bottom of the discharge channel extends downward from the middle toward the two large-grain discharge pipes 323. After the large seeds fall on the discharge channel, they can slide evenly to both sides and be discharged through the two large-grain discharge pipes 323, reducing the possibility of large-grain seeds accumulating and causing blockage of the large-grain discharge channel 322, thereby ensuring the working stability of the wind screen type cleaner.

[0042] like Figure 1 and Figure 6The lower screen assembly 33 includes a fourth screen plate 331 and a fifth screen plate 332 arranged in sequence from top to bottom in the vertical direction. The diameter of the screen hole on the fifth screen plate 332 is set to d3, and the diameter of the screen hole on the fourth screen plate 331 is set to d4, d4>a2>d3. After passing through the third screen plate 321, the small seeds first fall on the fourth screen plate 331. At this time, the small seeds can pass through the fourth screen plate 331 and fall on the fifth screen plate 332 and move downward along the fifth screen plate 332. The box body 1 is provided with a small grain discharge port 333 at one end of the fifth screen plate 332 away from the docking point with the middle screen assembly 32, so that the small grain seeds can be discharged from the small grain discharge port 333. The larger impurities that fall with the small grain seeds move downward along the fourth screen plate 331. The second impurity removal channel 334 is provided at the lowest end of the fourth screen plate 331. The impurities can be discharged from the second impurity removal channel 334, further improving the purity of the small grain seeds.

[0043] like Figure 6 and Figure 7 A rubber ball rack 5 is provided between the first sieve plate 311 and the second sieve plate 312, and between the fourth sieve plate 331 and the fifth sieve plate 332. The rubber ball rack 5 is divided into 16 equal-sized areas, and a plurality of rubber balls 51 are placed in each area. The first sieve plate 311, the second sieve plate 312, the fourth sieve plate 331 and the fifth sieve plate 332 will vibrate during operation. At this time, the rubber ball rack 5 and the rubber balls 51 can continuously impact the first sieve plate 311, the second sieve plate 312, the fourth sieve plate 331 and the fifth sieve plate 332, thereby facilitating the seeds or impurities stuck in the sieve holes to pop out, thereby greatly reducing the possibility of the first sieve plate 311, the second sieve plate 312, the fourth sieve plate 331 and the fifth sieve plate 332 being blocked, thereby improving the screening efficiency. In addition, the rubber ball rack 5 and the rubber balls 51 are soft in texture, and can play a buffering and protective role for the first sieve plate 311, the second sieve plate 312, the fourth sieve plate 331 and the fifth sieve plate 332.

[0044] like Figure 1 A baffle plate 6 is provided between the middle screen assembly 32 and the lower screen assembly 33 of the box body 1. The bottom of the baffle plate 6 extends to the fourth screen plate and there is a gap between the baffle plate 6 and the fourth screen plate. A pressure sensor 61 is provided on the baffle plate 6. The pressure sensor 61 is located at the bottom of the baffle plate 6. The baffle plate 6 can block the seed flow, thereby reducing excessive seeds distributed on the fourth screen plate 331. When the seed flow rate is too large, causing the seed flow to contact the pressure sensor 61, the pressure sensor 61 controls the electromagnetic feeding plate 22 to reduce the vibration rate, thereby reducing the feeding speed, so as to ensure the seed screening stability of the wind screen cleaning and seed selection machine.

[0045] The implementation principle of this embodiment is: the operator first pours the seed flow mixed with large seeds and small seeds into the hopper 21, and the seed flow is distributed to both sides by the distribution plate 25, so that it falls on the electromagnetic feeding plate 22 quickly and evenly, and the electromagnetic feeding plate 22 vibrates and spreads the seed flow while conveying it to the air selection guide plate 23, and the seed flow flows along the air selection guide plate 23 to the feed flow plate 24, and the air selection system 4 draws air at this time, and the air flow enters from the air flow port 7. At this time, a horizontal air flow from right to left is formed between the air flow port 7 and the air selection system 4, and the seed flow flows downwardly toward the air flow port 7, and the air flow and the seed flow are staggered, which is conducive to blowing out light and large impurities between the seeds in the air and drawing them into the air selection system 4, greatly improving the impurity removal efficiency, and this air flow can also break up the seed flow in the air, thereby improving the uniformity of the seed flow distribution.

[0046] The seed flow then passes through the feed flow plate 24 and falls on the semi-guide plate 314. The seeds are evenly distributed on the first sieve plate 311 and the second sieve plate 312, and then pass through the upper sieve assembly 31, the middle sieve assembly 32 and the lower sieve assembly 33 in sequence. At this time, large seeds can be discharged from the large-grain discharge pipe 323, and small seeds can be discharged from the small-grain discharge port 333, thereby quickly and conveniently realizing the screening of large seeds and small seeds, so that the operator can sow them separately later.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air-screen type cleaning and seed selection integrated machine, comprising a box (1), a feeding mechanism (2) arranged on the top of the box (1), a screening mechanism (3) and an air selection system (4) arranged in the box (1), characterized in that: The screening mechanism (3) comprises an upper screen assembly (31), a middle screen assembly (32) and a lower screen assembly (33) which are distributed in a zigzag shape; The upper screen assembly (31) comprises a first screen plate (311), a second screen plate (312) and a first flow plate (313) which are stacked in a vertical direction, the diameter of the screen holes on the first screen plate (311) and the second screen plate (312) are both d1, a semi-guide plate (314) is provided at one end of the first screen plate (311) facing the material feeding mechanism (2), a plurality of the semi-guide plates (314) are provided along the width direction of the first screen plate (311), and a first impurity removal channel (315) extending out of the box body (1) is provided at one end of the first flow plate (313) away from the material feeding mechanism (2); The middle screen assembly (32) comprises a third screen plate (321), the diameter of the screen holes on the third screen plate (321) is set to d2, and the end of the third screen plate (321) away from the docking point with the upper screen assembly (31) is provided with a large particle discharge channel (322) extending out of the box body (1); The lower screen assembly (33) comprises a fifth screen plate (332), the diameter of the screen holes on the fifth screen plate (332) being set to d3, and the box body (1) is provided with a small particle discharge port (333) at one end of the fifth screen plate (332) away from the docking point with the middle screen assembly (32); The particle size of large seeds is set to a1, and the particle size of small seeds is set to a2, then a1>d1≥d2>a2>d3.

2. The wind-screen type cleaning and seed selection integrated machine according to claim 1, characterized in that: A fourth sieve plate (331) is provided above the fifth sieve plate (332), the diameter of the sieve holes on the fourth sieve plate (331) is set to d4, d4>a2, and a second impurity removal channel (334) is provided at one end of the fourth sieve plate (331) away from the docking point with the middle sieve assembly (32).

3. The wind-screen type cleaning and seed selection integrated machine according to claim 2, characterized in that: Both ends of the large-particle discharge channel (322) extend out of the box body (1) and are connected to a large-particle discharge pipe (323).

4. The wind-screen type cleaning and seed selection integrated machine according to claim 3, characterized in that: The bottom of the discharge channel extends obliquely downward from the middle toward the two large-particle discharge pipes (323).

5. The wind-screen type cleaning and seed selection integrated machine according to claim 4, characterized in that: A rubber ball rack (5) is provided between the first sieve plate (311) and the second sieve plate (312), and a plurality of rubber balls (51) are placed in the rubber ball rack (5).

6. The wind-screen type cleaning and seed selection integrated machine according to claim 2 or 5, characterized in that: The feeding mechanism (2) comprises a feeding hopper (21), an electromagnetic feeding disc (22) is provided inside the box body (1) at the discharge end of the feeding hopper (21), a wind selection guide plate (23) inclined toward the electromagnetic feeding disc (22) is provided inside the box body (1), a feeding flow plate (24) is provided below the wind selection guide plate (23), and the discharge end of the feeding flow plate (24) faces the semi-guide plate (314).

7. The wind-screen type cleaning and seed selection integrated machine according to claim 6, characterized in that: The box body (1) is provided with a material baffle plate (6) between the middle screen assembly (32) and the lower screen assembly (33); the bottom of the material baffle plate (6) extends toward the fourth screen plate and there is a gap between the fourth screen plate; and a pressure sensor (61) is provided on the material baffle plate (6).

8. The wind-screen type cleaning and seed selection integrated machine according to claim 7, characterized in that: A distribution plate (25) is provided in the feed hopper (21), and the distribution plate (25) is rotatably connected to the wall of the feed port, and the thickness of the bottom of the distribution plate (25) is greater than the thickness of the top.

9. The wind-screen type cleaning and seed selection integrated machine according to claim 7, characterized in that: The box body (1) is provided with an air flow port (7) at a position corresponding to the air selection guide plate (23), and the air flow port (7) is connected to the air selection system (4).

10. The wind-screen type cleaning and seed selection integrated machine according to claim 9, characterized in that: A filter frame (71) is provided at the airflow opening (7).

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