A raw grain warehouse cleaning equipment

Abstract

The utility model discloses a kind of raw grain warehouse cleaning equipment, belong to grain processing technical field, and by uniform material air separation unit to raw grain is uniform material and air separation, without again through the vibration of sieve plate to raw grain is uniform material, raw grain enters vibrating screen can start efficient screening, can utilize the screening effect of vibrating screen to the greatest extent, avoid raw grain uneven distribution on the sieve plate of vibrating screen affect screening effect, while raw grain is free fall in uniform material air separation unit, airflow that passes through raw grain will be formed in uniform material air separation unit, light impurities in raw grain are carried away by airflow, reduce the proportion of light impurities in raw grain, in this way, when raw grain is screened in vibrating screen, the number of light impurities in raw grain is less, can avoid light impurities block and shield the screen hole of sieve plate in vibrating screen, so that raw grain can be better separated into large impurities and small impurities, improve the screening effect of vibrating screen to raw grain, and then improve the final raw grain cleaning effect, reduce the inclusion rate of final discharge raw grain.

Description

Technical Field

[0001] This utility model relates to the field of grain processing technology, specifically to a raw grain entering and cleaning equipment. Background Technology

[0002] Before grain is put into storage, impurities in the grain need to be screened and removed to reduce the impurity content of the grain and thus meet the grain storage standards. Currently, when cleaning raw grains before they enter the warehouse, a combined cleaning equipment is usually used. The combined cleaning equipment includes an air separation unit, a screening unit, and a dust removal unit. The air separation unit is used to separate light impurities from the raw grains, the screening unit is used to screen large and small impurities from the raw grains, and the dust removal unit is used to filter light impurities in the air to prevent light impurities from being discharged from the combined cleaning equipment. Currently, the most commonly used screening units are cylindrical screens and vibrating screens. When using a vibrating screen to screen raw grains, the grains need to be spread evenly on the screen plate to maximize the screening effect. However, in existing technologies, the hopper is usually directly connected to the vibrating screen. It is difficult to form a uniform grain strip through hopper discharge. After the raw material falls onto the screen plate of the vibrating screen, it still needs to be spread evenly by the vibration of the screen plate. At this time, the screening effect of the screen plate cannot be fully utilized, resulting in poor grain cleaning effect of the overall device. If the screening effect needs to be improved, the length of the screen plate needs to be increased, which leads to an increase in the size of the overall device. At the same time, light impurities in the raw grain, such as empty grains, may clog or block the screen holes on the screen plate, which will also affect the screening effect of the screen plate.

[0003] Based on this, this utility model designs a raw grain entering and cleaning device to solve the above problems. Utility Model Content

[0004] This utility model provides a raw grain entering the warehouse cleaning equipment to solve the technical problems in the prior art that require the raw materials to be evenly dispersed by a vibrating screen and that there are too many light impurities in the raw grain entering the vibrating screen.

[0005] According to one aspect of this utility model, a raw grain entering and cleaning device is provided, comprising a hopper, a uniform material air separation unit, a vibrating screen, and a circulating air separator connected in sequence; the hopper is used to load raw grain; the uniform material air separation unit is connected to the outlet of the hopper and is used to introduce the raw grain in the hopper and form a free-falling raw grain strip of uniform thickness, and the uniform material air separation unit is also used to form an airflow passing through the free-falling raw grain strip; the vibrating screen is connected to the outlet of the uniform material air separation unit and is used to screen the raw grain processed by the uniform material air separation unit; the circulating air separator is connected to the outlet of the vibrating screen and is used to perform secondary air separation on the screened raw grain; the raw grain entering and cleaning device further includes a dust removal unit, which is connected to the outlet of the uniform material air separation unit and the circulating air separator and is used to filter the gas discharged from the uniform material air separation unit and the circulating air separator.

[0006] As a further embodiment of this utility model, the uniform material air separation unit includes a housing, a feeding roller, and a driving assembly. The inlet of the housing is connected to the outlet of the hopper and is used to introduce the raw grain in the hopper into the housing. The feeding roller is rotatably disposed in the housing along a horizontal axis, and the feeding roller is located below the inlet of the housing to block the inlet of the housing. The surface of the feeding roller is provided with multiple material grooves spaced apart circumferentially. The driving assembly is used to drive the feeding roller to rotate so that the raw grain in the hopper is brought into the housing through the rotation of the material grooves.

[0007] As a further embodiment of this utility model, the width of the trough gradually increases from the inside to the outside in its depth direction.

[0008] As a further embodiment of this utility model, a material flow plate is fixedly provided inside the shell. The material flow plate is located below the material discharge position of the trough and is inclined to the horizontal plane. It is used to receive the raw grain discharged from the trough and allow the raw grain to slide along the inclined direction of the material flow plate.

[0009] As a further embodiment of this utility model, the housing is provided with a first air inlet and a second air inlet that connect its inner and outer sides. The first air inlet and the second air inlet are arranged vertically at intervals. The first air inlet and the second air inlet are used to cooperate with the suction unit to form two airflows above and below the material flow plate.

[0010] As a further embodiment of this utility model, the housing is provided with a contour seat, the feeding roller has two sides on the width direction of the feeding port of the housing as a first side and a second side, the material trough is used to discharge the raw grain loaded at the discharge port when it rotates to the first side of the feeding roller, and the contour seat is arranged around the bottom end of the feeding roller and the second side.

[0011] As a further embodiment of this utility model, the dust removal unit is connected to the inner cavity of the hopper via a pipeline.

[0012] As a further embodiment of this utility model, a baffle plate is provided between the end of the hopper connected to the dust removal unit and the feed inlet of the hopper.

[0013] As a further embodiment of this utility model, the raw grain entering the warehouse cleaning equipment also includes a walking chassis, and the hopper, the uniform material air separation unit, the vibrating screen, the circulating air separator and the dust removal unit are all mounted on the walking chassis.

[0014] As a further embodiment of this utility model, the raw grain entering the warehouse cleaning equipment also includes a rain shelter, which is installed above the hopper, the uniform material air separation unit, the vibrating screen, the circulating air separator and the dust removal unit to protect against rainwater.

[0015] This utility model has the following beneficial effects: This equipment cleans the raw grain through a series of interconnected components: a hopper, a uniform material separation unit, a vibrating screen, and a circulating air separator. The uniform material separation unit evenly distributes and separates the grain, ensuring that when the grain falls onto the vibrating screen's sieve plate, a uniform grain band is formed. This eliminates the need for further uniform material distribution through sieve vibration, allowing for efficient screening immediately upon entry. This maximizes the screening effect of the vibrating screen and avoids uneven grain distribution on the sieve plate, which could negatively impact screening efficiency. Simultaneously, the uniform material distribution... When the material falls freely within the air separation unit, an airflow is generated that passes through the raw grain. This airflow carries away light impurities from the raw grain, reducing their proportion. As a result, when the raw grain enters the vibrating screen for sieving, there are fewer light impurities, preventing them from clogging or blocking the screen openings. This allows for better separation of large and small impurities, improving the screening effect of the vibrating screen and ultimately enhancing the final grain cleaning effect, thus reducing the impurity content of the final discharged grain.

[0016] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model after the awning has been removed; Figure 3 This is a schematic diagram of the uniform material air separation unit structure in this utility model; Figure 4 This is a flowchart illustrating the process of this utility model.

[0018] Legend: 1. Hopper; 11. Baffle plate; 2. Material equalization and air separation unit; 21. Shell; 22. Feed roller; 221. Material trough; 23. Drive assembly; 24. Flow plate; 25. First air inlet; 26. Second air inlet; 27. Contouring base; 3. Vibrating screen; 4. Circulating air separator; 5. Dust removal unit; 51. Shakel; 52. Dust removal fan; 53. Pulse dust collector; 6. Walking chassis; 7. Canopy. Detailed Implementation

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a raw grain entering and cleaning equipment, including a hopper 1, a uniform material air separation unit 2, a vibrating screen 3, and a circulating air separator 4 connected in sequence; the hopper 1 is used to load raw grain; the uniform material air separation unit 2 is connected to the outlet of the hopper 1 and is used to introduce the raw grain in the hopper 1 and form a free-falling raw grain belt with uniform thickness, and the uniform material air separation unit 2 is also used to form an airflow passing through the free-falling raw grain belt; the vibrating screen 3 is connected to the outlet of the uniform material air separation unit 2 and is used to screen the raw grain after the uniform material air separation unit 2; the circulating air separator 4 is connected to the outlet of the vibrating screen 3 and is used to perform secondary air separation on the screened raw grain; the raw grain entering and cleaning equipment also includes a dust removal unit 5, which is connected to the outlet of the uniform material air separation unit 2 and the circulating air separator 4 and is used to filter the gas discharged from the uniform material air separation unit 2 and the circulating air separator 4; like Figure 1 As shown, this equipment includes a hopper 1, a uniform air separation unit 2, a vibrating screen 3, and a circulating air separator 4 connected in sequence. During operation, the raw grain is added into the hopper 1 through the feed inlet and then discharged from the hopper 1 through the discharge outlet. Since the uniform air separation unit 2 is connected to the discharge outlet of the hopper 1, the raw grain discharged from the discharge outlet of the hopper 1 will enter the uniform air separation unit 2. After entering the uniform air separation unit 2, the raw grain will be discharged from the discharge outlet of the uniform air separation unit 2 and enter the vibrating screen 3 for screening. After screening, the raw grain will be discharged from the discharge outlet of the vibrating screen 3 and enter the circulating air separator 4 for circulating air separation. After circulating air separation, the raw grain will finally be discharged from the discharge outlet of the circulating air separator 4 to complete the cleaning. The above is the complete process of raw grain in the raw grain warehousing cleaning equipment. Through the above process, the impurities in the raw grain are separated so that the raw grain meets the warehousing standards. After entering the uniform material air separation unit 2, the raw grain forms a free-falling grain strip with uniform thickness. This uniform grain strip is then discharged from the outlet of the uniform material air separation unit 2 and enters the vibrating screen 3. Before entering the vibrating screen 3, the raw grain is uniformly separated by the uniform material air separation unit 2, ensuring that a uniform grain strip forms on the screen plate as it falls. This eliminates the need for further uniform separation through screen plate vibration, allowing for efficient screening immediately upon entering the vibrating screen 3 and maximizing the utilization of vibration. The screening effect of sieve 3 is to avoid uneven distribution of raw grain on the sieve plate of vibrating sieve 3, which would affect the screening effect. At the same time, when the raw grain falls freely in the uniform material air separation unit 2, an airflow will be formed in the uniform material air separation unit 2 to pass through the raw grain. The airflow carries away the light impurities in the raw grain, reducing the proportion of light impurities in the raw grain. In this way, when the raw grain enters the vibrating sieve 3 for screening, there are fewer light impurities in the raw grain, which can prevent light impurities from clogging the sieve holes of the sieve plate inside the vibrating sieve 3. This allows for better separation of large and small impurities in the raw grain, improving the screening effect of vibrating sieve 3 on raw grain. This device adds a uniform material air separation unit 2 between the hopper 1 and the vibrating screen 3. The uniform material air separation unit 2 uniformly and air separates the raw grain. The raw grain can start efficient screening after entering the vibrating screen 3, which can make full use of the screening effect of the vibrating screen 3, thereby improving the final raw grain cleaning effect and reducing the impurity rate of the final discharged raw grain. The raw grain entering the warehouse cleaning equipment also includes a dust removal unit 5, which is connected to the air outlet of the uniform material air separation unit 2 and the circulating air separator 4. It is used to filter the gas discharged from the uniform material air separation unit 2 and the circulating air separator 4, and filter out the dust and light impurities in the gas to prevent dust and light impurities from being discharged from the raw grain entering the warehouse cleaning equipment.

[0021] Specifically, the uniform material air separation unit 2 includes a housing 21, a feeding roller 22, and a drive assembly 23. The feed inlet of the housing 21 is connected to the discharge outlet of the hopper 1 and is used to introduce the raw grain in the hopper 1 into the housing 21. The feeding roller 22 is rotatably disposed in the housing 21 along the horizontal axis, and the feeding roller 22 is located below the feed inlet of the housing 21 to block the feed inlet of the housing 21. Multiple material grooves 221 are spaced apart on the surface of the feeding roller 22 along the circumference. The drive assembly 23 is used to drive the feeding roller 22 to rotate so that the raw grain in the hopper 1 is brought into the housing 21 through the rotation of the material grooves 221. The specific structure of the uniform material air separation unit 2 is as follows: Figure 3As shown, the device includes a housing 21, a feeding roller 22, and a drive assembly 23. The inlet of the housing 21 is connected to the outlet of the hopper 1. When the hopper 1 is filled with raw grain, the raw grain can be discharged from the outlet of the hopper 1 and enter the housing 21 through the inlet of the housing 21. The feeding roller 22 is rotatably disposed inside the housing 21 along a horizontal axis, and the feeding roller 22 blocks the inlet of the housing 21. At this time, the raw grain in the hopper 1 cannot enter the housing 21. The surface of the feeding roller 22 has a groove 221, and the feeding roller 22 is driven to rotate by the drive assembly 23. When the feeding roller 22 rotates, the groove 221 on the feeding roller 22 will change position. When the groove 221 moves into the range of the inlet of the housing 21, the raw grain accumulated in the hopper 1 will enter the groove 221. As the groove 221 continues to move, the groove 221 will leave the range of the inlet of the housing 21 and enter the hopper 21. Inside the housing 21, when the trough 221 moves to the set position, the raw grain in the trough 221 will begin to slide down from the trough 221 under the action of gravity. As the raw grain slides down from the trough 221, the amount of raw grain loaded in the trough 221 will decrease. At the same time, the feeding roller 22 continues to rotate, so the tilt angle of the trough 221 will become larger and larger. By controlling the rotation speed of the feeding roller 22, the speed at which the grain leaves the trough 221 can be controlled, thereby controlling the thickness of the raw grain strip formed by the raw grain. The raw grain is loaded into the trough 221 and rotated out. Since the raw grain slides down from the trough 221, it is only affected by gravity and the mutual friction between the raw grains. There are fewer factors affecting the sliding speed of the raw grain, so the thickness of the raw grain can be ensured to be uniform. This can stably form a raw grain strip with uniform and controllable thickness, which provides a beneficial effect for the subsequent screening of the raw grain in the vibrating screen 3. Specifically, multiple feed troughs 221 are evenly spaced along the circumference of the feed roller 22. By discharging material at intervals through the multiple feed troughs 221, a continuous grain strip can be formed inside the housing 21. Specifically, the drive assembly 23 includes a drive motor and a timing belt. The drive motor is mounted on the housing 21 and drives the feeding roller 22 to rotate via the timing belt. Furthermore, the width of the feed trough 221 gradually increases from the inside to the outside in its depth direction; like Figure 3 As shown, the trough 221 is narrower at its deeper parts and wider near the opening. Since the raw grain in the trough 221 slides slowly down from the trough 221 as it is tilted, the opening of the trough 221 can be larger than the thickness of the raw grain strip to be formed. Furthermore, the discharge port of the hopper 1 can also be made wider. When there is clump of raw grain in the hopper 1, the clump of raw material will not get stuck in the hopper 1, which can effectively prevent the discharge blockage of the hopper 1 and ensure that the discharge speed of the hopper 1 can match the feeding speed, thus avoiding excessive raw grain in the hopper 1.

[0022] Furthermore, a material flow plate 24 is fixed inside the housing 21. The material flow plate 24 is located below the discharge position of the material trough 221 and is inclined to the horizontal plane. It is used to receive the raw grain discharged from the material trough 221 and to allow the raw grain to slide along the inclined direction of the material flow plate 24. like Figure 3 As shown, a material flow plate 24 is provided inside the shell 21. The material flow plate 24 is located below the discharge position of the material trough 221. When the raw grain is discharged from the material trough 221, it will fall onto the material flow plate 24 below. The material flow plate 24 is inclined to the horizontal plane. After the raw material falls onto the material flow plate 24, it will slide down along the inclined direction of the material flow plate 24 and eventually leave the material flow plate 24. By setting the material flow plate 24, the raw grain belt formed inside the shell 21 can hit the material flow plate 24. The light impurities and grain are separated by the weight difference, thereby increasing the air separation effect of the airflow on the raw grain belt, further reducing the impurity content in the raw grain, reducing the impact of light impurities on the subsequent raw grain screening, and increasing the screening effect of the vibrating screen 3 on the raw grain.

[0023] Specifically, the housing 21 has a first air inlet 25 and a second air inlet 26 that connect its inner and outer sides. The first air inlet 25 and the second air inlet 26 are arranged vertically at intervals. The first air inlet 25 and the second air inlet 26 are used to cooperate with the suction unit to form two airflows above the material flow plate 24 and below the material flow plate 24. like Figure 3 As shown, the surface of the shell 21 is provided with a first air inlet and a second air inlet. The first air inlet and the second air inlet are used to introduce outside air into the shell 21 to form an airflow. The first air inlet and the second air inlet are arranged vertically at intervals. The first air inlet is located above the material flow plate 24, and the second air inlet is located below the material flow plate 24. When the first air inlet and the second air inlet introduce outside air into the shell 21, airflow will be formed above the material flow plate 24 and below the material flow plate 24, respectively. The airflow formed above the material flow plate 24 will pass through the raw grain belt between the trough 221 and the material flow plate 24, and the airflow formed below the material flow plate 24 will pass through the raw grain belt between the material flow plate 24 and the vibrating screen 3, so as to perform two air separations on the raw grain, thereby improving the air separation effect of the raw grain.

[0024] Furthermore, the housing 21 is provided with a contour seat 27, and the feeding roller 22 is located on the first side and the second side on both sides of the feed inlet width direction of the housing 21. The feed trough 221 is used to discharge the raw grain loaded at the discharge outlet when it rotates to the first side of the feeding roller 22. The contour seat is arranged around the bottom end and the second side of the feeding roller 22. like Figure 3As shown, in order to avoid material leakage from the gap between the feeding roller 22 and the feed inlet of the housing 21, a contour seat 27 is provided inside the housing 21. The contour seat 27 surrounds the bottom end and the second side of the feeding roller 22, leaving only the first side of the feeding roller 22 for material discharge from the feeding trough 221. The contour seat 27 encloses the second side and the bottom end of the feeding roller 22. The grain leaking from the feed inlet of the housing 21 needs to pass through the gap between the contour seat 27 and the feeding roller 22. Furthermore, the rotation direction of the feeding roller 22 is opposite to the leakage direction, which can effectively prevent material leakage from the gap between the feeding roller 22 and the feed inlet of the housing 21.

[0025] Furthermore, the dust removal unit 5 is connected to the inner cavity of the hopper 1 via a pipeline; like Figure 2 As shown, the dust removal unit 5 includes a dust removal fan 52, which can draw air from the hopper 1. When the raw grain is fed into the hopper 1, the raw grain will undergo free fall. At this time, the dust in the raw grain will be dispersed into the inner cavity of the hopper 1. In order to prevent dust from overflowing from the feed inlet of the hopper 1 and polluting the surrounding environment, the dust removal unit 5 is connected to the hopper 1. During operation, the dust removal fan 52 in the dust removal unit 5 will draw air from the hopper 1 and allow the air in the hopper 1 to enter the dust removal unit 5 for dust removal, thereby preventing dust from escaping from the feed inlet of the hopper 1 into the surrounding environment. Furthermore, a baffle plate 11 is provided between the end of the hopper 1 that is connected to the dust removal unit 5 and the feed inlet of the hopper 1. When the dust removal unit 5 draws out the air in the hopper 1, the air may carry the grain along with it. In order to prevent the grain in the hopper from entering the dust removal unit 5, a baffle plate 11 is provided in the hopper 1. When the grain moves with the gas, it will collide with the baffle plate 11, causing the grain to lose kinetic energy. At this time, under the action of gravity, the grain will fall down into the original grain in the hopper, thus avoiding waste of grain.

[0026] Specifically, such as Figure 1 As shown, the raw grain warehousing and cleaning equipment also includes a walking chassis 6, a hopper 1, a uniform material air separation unit 2, a vibrating screen 3, a circulating air separator 4, and a dust removal unit 5, all of which are mounted on the walking chassis 6. The walking chassis 6 can drive the above devices to move as a whole, and can move to different positions for raw grain warehousing and cleaning. The whole device moves together, eliminating the need for individual movement and the steps of disassembling and assembling between units, making it more convenient to use.

[0027] Specifically, such as Figure 1 As shown, the raw grain entering the warehouse cleaning equipment also includes a rain canopy 7. The rain canopy 7 is set above the hopper 1, the uniform material air separation unit 2, the vibrating screen 3, the circulating air separator 4 and the dust removal unit 5 to shield the equipment from rain and sunlight. It can cope with various severe weather conditions in rainy weather and avoid equipment failure caused by exposure to the sun and rain.

[0028] Specifically, such as Figure 2 As shown, the dust removal unit 5 includes a cyclone separator 51, a dust removal fan 52, and a pulse dust collector 53 connected in sequence. The rotation of the dust removal fan 52 creates a negative pressure, which draws in the gas from the material classifier unit 2, the hopper 1, and the circulating air classifier 4. The gas containing light impurities will pass through the cyclone separator 51 and the pulse dust collector 53 in sequence, improving the cleaning effect of light impurities in the air and preventing dust from escaping into the surrounding air.

[0029] Specifically, the vibrating screen 3 is a conventional technical means in this field. In this application, the vibrating screen 3 is a rotary cleaning screen.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grain entry and cleaning device, characterized in that: It includes a hopper (1), a uniform air separation unit (2), a vibrating screen (3), and a circulating air separator (4) connected in sequence. The hopper (1) is used to load raw grain; The uniform material air separation unit (2) is connected to the outlet of the hopper (1) and is used to introduce the raw grain in the hopper (1) and form a free-falling raw grain belt with uniform thickness. The uniform material air separation unit (2) is also used to form an airflow passing through the free-falling raw grain belt. The vibrating screen (3) is connected to the outlet of the uniform material air separation unit (2) and is used to screen the raw grain after it has been processed by the uniform material air separation unit (2); The circulating air separator (4) is connected to the discharge port of the vibrating screen (3) and is used for secondary air separation of the screened raw grain; The raw grain entering the warehouse cleaning equipment also includes a dust removal unit (5), which is connected to the air outlet of the uniform material air separation unit (2) and the circulating air separator (4) to filter the gas discharged from the uniform material air separation unit (2) and the circulating air separator (4).

2. The raw grain entering the warehouse cleaning equipment according to claim 1, characterized in that: The uniform material air separation unit (2) includes a housing (21), a feeding roller (22), and a drive assembly (23). The inlet of the housing (21) is connected to the outlet of the hopper (1) and is used to introduce the raw grain in the hopper (1) into the housing (21). The feeding roller (22) is rotatably disposed in the housing (21) along the horizontal axis. The feeding roller (22) is located below the inlet of the housing (21) and is used to block the inlet of the housing (21). The surface of the feeding roller (22) is provided with multiple material grooves (221) spaced apart circumferentially. The drive assembly (23) is used to drive the feeding roller (22) to rotate so that the raw grain in the hopper (1) is brought into the housing (21) through the rotation of the material grooves (221).

3. The raw grain entering the warehouse cleaning equipment according to claim 2, characterized in that: The width of the trough (221) gradually increases from the inside to the outside in its depth direction.

4. The raw grain entering the warehouse cleaning equipment according to claim 2, characterized in that: The housing (21) is fixedly provided with a material flow plate (24). The material flow plate (24) is located below the material discharge position of the material trough (221) and is inclined to the horizontal plane. It is used to receive the raw grain discharged from the material trough (221) and make the raw grain slide along the inclined direction of the material flow plate (24).

5. The raw grain entering the warehouse cleaning equipment according to claim 4, characterized in that: The housing (21) has a first air inlet (25) and a second air inlet (26) connecting its inner and outer sides. The first air inlet (25) and the second air inlet (26) are arranged vertically at intervals. The first air inlet (25) and the second air inlet (26) are used to cooperate with the suction unit to form two airflows above the material flow plate (24) and below the material flow plate (24).

6. The raw grain entering the warehouse cleaning equipment according to claim 2, characterized in that: The housing (21) is provided with a contour seat (27). The feeding roller (22) is located on the first side and the second side on both sides of the feed inlet width direction of the housing (21). The trough (221) is used to discharge the raw grain loaded at the discharge outlet when it rotates to the first side of the feeding roller (22). The contour seat is arranged around the bottom end and the second side of the feeding roller (22).

7. The raw grain entering the warehouse cleaning equipment according to claim 1, characterized in that: The dust removal unit (5) is connected to the inner cavity of the hopper (1) through a pipeline.

8. The raw grain entering the warehouse cleaning equipment according to claim 7, characterized in that: A baffle plate (11) is provided between the end of the hopper (1) that is connected to the dust removal unit (5) and the feed inlet of the hopper (1).

9. The raw grain entering the warehouse cleaning equipment according to claim 1, characterized in that: The raw grain storage cleaning equipment also includes a walking chassis (6), and the hopper (1), the uniform material air separation unit (2), the vibrating screen (3), the circulating air separator (4) and the dust removal unit (5) are all located on the walking chassis (6).

10. The raw grain entering the warehouse cleaning equipment according to claim 1, characterized in that: The raw grain storage cleaning equipment also includes a canopy (7), which is located above the hopper (1), the uniform air separation unit (2), the vibrating screen (3), the circulating air separator (4), and the dust removal unit (5) to shield against rain and sunlight.

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