A seed impurity removal device

Abstract

The utility model relates to corn seed impurity removal technical field, and disclose a seed impurity removal device, including the storage bin for containing corn seed, the storage bin front and back wall is passed through and is opened and is passed through the mouth, the flange is installed in the inside of the mouth, the flange inside sleeve connects the gas pipe, the gas pipe is located the inside surface of storage bin and is provided with impurity removal structure. The utility model discloses through the storage bin rotation, corn seed is taken up and falls, and the gas that cooperates with the branch pipe is washed out is used for impacting the corn seed gap that slides and falls, and the wind force contacts corn seed particle after driving the surface attached excrement and insect cadaver of pest, and the excrement and insect and insect cadaver that exist are all washed to the through -hole, and it is washed out the outside of storage bin, reaches the beneficial effect that corn seed storage removes the pest and excrement impurity of hatching regularly.

Description

Technical Field

[0001] This utility model relates to the field of corn seed impurity removal technology, specifically a seed impurity removal device. Background Technology

[0002] Qujing has a subtropical plateau monsoon climate, characterized by mild winters and cool summers, making it very suitable for growing corn. According to data from the Yunnan Provincial People's Government's article "Qujing City Vigorously Promotes the Construction of a Strong Agricultural City," the corn planting area in Qujing reached 2.32 million mu in 2023. Such a huge planting area corresponds to a huge amount of corn seed reserves. Before planting, corn seeds need to be dried, shelled, and impurities removed to ensure they can be stored for the next round of planting.

[0003] Currently, impurity removal for corn seeds is a separate process. The corn kernels enter the impurity removal device through the inlet and are then separated from the seeds by airflow and a vibrating screen. As disclosed in paragraph 0027 of the specification of prior art CN 221816727 U, "...when the corn kernels fall from the guide plate, the airflow blows away the lighter impurities in the corn kernels, and the lighter impurities are blown into the rectangular box by the airflow, thereby collecting the lighter impurities. The corn kernels and sand continue to fall and land on the top of the filter plate. Then the corn kernels flow along the filter plate, while the sand passes through the filter plate and falls into the rectangular box, thereby collecting the sand. Finally, the corn kernels flow out of the impurity removal box through the discharge port."

[0004] The aforementioned existing technical solutions can remove impurities from corn before storage. However, corn seeds are also susceptible to pests such as corn weevils and grain borers during storage. These pests feed and reproduce in the seeds, eventually dying and leaving their bodies as impurities. At the same time, their excrement also contaminates the seeds, affecting their quality. These pests are mostly carried inside the seeds and hatch when the temperature is suitable. In particular, these pests often feed and reproduce inside the stored corn seeds by following the gaps in the corn kernels. Corn weevils are 2.5–4.5 mm long, and grain borers are 2–3 mm long. Their small size makes them difficult to detect, resulting in the current lack of technical solutions for removing impurities from stored corn kernels. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a seed impurity removal device that has the advantages of periodically removing hatched pests and excrement impurities during corn seed storage, thus solving the aforementioned technical problems.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a seed impurity removal device, comprising a storage chamber for holding corn seeds, the storage chamber being a circular hollow body with a material inlet on its arc surface, the material inlet being covered by a cover and the two being fixed with bolts, a through opening being provided through the front and rear walls of the storage chamber, a flange being installed inside the through opening, the flange being rotatably connected to the through opening, a support rod being fixedly connected to the outside of the flange, the support rod being vertically connected to a base plate, through holes being provided around the flange, i.e., the front and rear walls of the storage chamber, an air pipe being sleeved inside the flange, the tail end of the air pipe passing through the through opening located on the rear wall of the storage chamber to form a seal, and the front end of the air pipe being located on the outside of the front wall of the storage chamber and sealed to an air pump; The air pipe is located on the inner surface of the storage chamber and has an impurity removal structure. The impurity removal structure includes multiple branch tubes installed on the outer surface of the trachea and communicating with its interior. The branch tubes are fixedly connected to the trachea at an inclined angle.

[0007] As a preferred embodiment of this utility model, the outer surface of the storage compartment is also surrounded by a toothed groove, the inner side of the toothed groove meshes with a gear, and the rear wall of the gear is connected to and fixedly installed on the output end of a reduction motor on the base plate.

[0008] As a preferred embodiment of this utility model, the number of branch tubes is ten, and every five branch tubes are arranged in a group and installed around the surface of the air tube. The two groups of branch tubes are respectively installed at the front and rear ends of the part of the air tube located inside the storage compartment. The two groups of branch tubes are inclined in opposite directions and are staggered from each other.

[0009] As a preferred technical solution of this utility model, the impurity removal structure further includes a deflector plate, which is polygonal or circular and is mounted on the arc surface inside the storage compartment. The deflector plate is fixed to the storage compartment by welding.

[0010] As a preferred embodiment of this utility model, the number of branch pipes is five, and the five branch pipes are installed around the front part of the air pipe located inside the storage chamber, and the air pipe is inclined towards the rear part inside the storage chamber.

[0011] As a preferred technical solution of this utility model, the impurity removal structure further includes a vent hole. The vent hole is opened through the middle part of the air tube located inside the storage compartment. A collar is installed at the front and rear ends of the vent hole opening, i.e., on the outer surface of the air tube. Two collars are rotatably connected to a hollow sleeve close to one side wall. The front and rear walls of the hollow sleeve are rotatably connected to the collar and simultaneously wrap around the vent hole. A lever is also connected to the outer surface of the hollow sleeve. The first end of the lever passes through the hollow sleeve and is located inside it but does not contact the air tube. The lever is hollow inside and has multiple micro-holes spaced apart on its surface. The tail end of the lever is connected to the arc surface inside the storage compartment.

[0012] Compared with the prior art, the present invention provides a seed impurity removal device, which has the following beneficial effects: This invention utilizes a geared motor to drive a gear rotation, which meshes with the toothed grooves on the outer surface of the storage chamber. This causes the storage chamber to rotate, and the paddle shifter moves synchronously with it. As the paddle shifter moves, it comes into contact with the corn seeds stored inside the storage chamber. Due to the inherent friction within the storage chamber, the combined action of the paddle shifter and the curved surface of the inner wall of the storage chamber causes the corn seeds deposited at the bottom of the inner side of the storage chamber to be turned upwards. Notably, as the paddle shifter moves, it forms a groove with the inner wall of the storage chamber. This groove digs out the corn seeds, causing them to float to the top of the inner side of the storage chamber. Then, as the storage chamber continues to rotate, the paddle shifter swings from the three o'clock position to the twelve o'clock position, forming a downward slope, at which point the corn seeds slide down. The airflow from the branch pipes, which are angled upwards, blows through the gaps in the falling corn seeds. This angle allows the airflow to agitate the corn seeds that have been lifted and then fallen by the deflector. When the airflow comes into contact with the corn seeds, it carries away the insect excrement and carcasses attached to the surface, pushing all the insect excrement, insects, and carcasses towards the through-hole and out of the storage chamber. Because the storage chamber rotates continuously, the deflector constantly flips the corn seeds. Each flip of the deflector moves some of the bottom corn seeds, causing the upper corn seeds to move downwards. The corn seeds falling from the deflector then become piled on top of the corn seeds, forming a cycle. This achieves the beneficial effect of periodically removing hatched pests and excrement during corn seed storage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model; Figure 2 This is a front sectional view of the overall structure of Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the trachea structure according to Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model; Figure 5 This is a front sectional view of the overall structure of Embodiment 2 of this utility model; Figure 6 This is a schematic diagram of the explosion of the tracheal structure in Embodiment 2 of this utility model.

[0014] Among them: 1. Storage compartment; 101. Through hole; 102. Through port; 103. Flange; 104. Support rod; 105. Gear groove; 106. Gear; 107. Dial plate; 2. Air pipe; 201. Collar; 202. Hollow sleeve; 3. Air pump; 4. Branch pipe; 5. Vent hole; 6. Dial rod; 601. Micro hole. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please see Figure 1-6A seed impurity removal device includes a storage chamber 1 for holding corn seeds. The storage chamber 1 is a circular hollow body with a material inlet on its arc surface. The material inlet is covered by a cover and the two are fixed with bolts. Through openings 102 are provided through the front and rear walls of the storage chamber 1. A flange 103 is installed inside the through opening 102 and is rotatably connected to the through opening 102. A support rod 104 is also fixedly connected to the outside of the flange 103. The support rod 104 is vertically connected to the base plate. Through holes 101 are also provided around the flange 103, i.e., the front and rear walls of the storage chamber 1. An air pipe 2 is sleeved inside the flange 103. The tail end of the air pipe 2 passes through the through opening 102 located on the rear wall of the storage chamber 1 and forms a seal. The front end of the air pipe 2 is located on the outside of the front wall of the storage chamber 1 and is sealed to an air pump 3. The air tube 2 is located on the inner surface of the storage chamber 1 and is equipped with an impurity removal structure; It includes branch tubes 4, there are multiple branch tubes 4, which are installed on the outer surface of the trachea 2 and communicate with its interior. The branch tubes 4 are fixedly connected to the trachea 2 at an inclined angle.

[0019] Furthermore, a toothed groove 105 is also formed around the outer surface of the storage compartment 1, and a gear 106 meshes inside the toothed groove 105. The rear wall of the gear 106 is connected to the output end of the reduction motor that is fixedly installed on the base plate.

[0020] The geared motor is an existing device that can be purchased directly from the market. The specific model is 4RK25GN-CT-4GN6K. Therefore, the power supply and installation of the geared motor are well known to those skilled in the art, so they will not be described in detail. The geared motor and gear 106 are connected by a coupling. The outer surface of the geared motor in this application is also covered with a dust cover. The dust cover is an essential structure for motor installation and has not been improved. It is only used to place insect excrement or insect carcasses.

[0021] Furthermore, there are ten branch tubes 4, and every five branch tubes 4 are installed around the surface of the air pipe 2. The two sets of branch tubes 4 are installed at the front and rear ends of the part of the air pipe 2 located inside the storage chamber 1, respectively. The two sets of branch tubes 4 are inclined in opposite directions and are staggered from each other.

[0022] By staggering the two sets of branch pipes 4, the airflow from the ten branch pipes 4 does not interfere with each other, as shown in the instruction manual. Figure 3 As shown, the branch pipe 4 is tilted upwards at an angle that can blow the corn seed particles that are lifted up by the deflector plate 107 and then fall back down. When the wind comes into contact with the corn seed particles, it will carry the pest excrement and insect carcasses attached to the surface.

[0023] Furthermore, the impurity removal structure also includes a deflector plate 107, which is polygonal or circular and is mounted around the arc surface inside the storage compartment 1. The deflector plate 107 is fixed to the storage compartment 1 by welding.

[0024] As the storage chamber 1 rotates, the lever 107 moves synchronously with it. As the lever moves, it comes into contact with the corn seed kernels stored inside the storage chamber 1. Due to the inherent friction within the storage chamber 1, the combined action of the lever 107 and the curved surface of the inner wall of the storage chamber 1 causes the corn seed kernels deposited at the bottom of the inner side of the storage chamber 1 to rise upwards. It is worth noting that as the lever 107 moves, it forms a groove with the inner wall of the storage chamber 1. This groove scoops out the corn seed kernels, causing them to float to the top of the inner side of the storage chamber 1. Then, as the storage chamber 1 continues to rotate, the lever 107 swings from the three o'clock position to the twelve o'clock position, forming a downward slope. At this time, the corn seeds slide down, and the gas from the branch pipe 4 impacts the gaps between the sliding corn seeds, pushing all the pest excrement, insects, and insect carcasses into the through hole 101 and out of the storage chamber 1. Since the storage chamber 1 of this application rotates continuously, the rotating turntable 107 continuously turns the corn seeds. Each time the turntable flips, it will move some of the corn seeds at the bottom, so the corn seeds at the top will move downward. The corn seeds falling from the turntable will then be placed on top of the corn seed pile, forming a cycle, thus ensuring that all the seeds in the corn seed pile can be turned, so that the impurities inside the seed pile can be completely blown away and separated.

[0025] Furthermore, there are five branch pipes 4, which are installed around the front end of the air pipe 2 inside the storage chamber 1, and the air pipe 2 is inclined towards the rear end of the storage chamber 1.

[0026] Furthermore, the air pump 3 is also an existing device, model FAN-081. This application is a direct application of the existing air pump 3 without any modifications. The connection between the output end of the air pump 3 and the air pipe 2 uses a flange ring seal connection. The pipe connection is common knowledge to those skilled in the art, and as shown in the appendix to the specification... Figure 1 As shown, the air pump is directly fixed to the support rod 104 by bolts on the base.

[0027] Furthermore, the impurity removal structure also includes a vent 5, which is opened through the middle part of the air pipe 2 located inside the storage chamber 1. A collar 201 is installed at the front and rear ends of the vent 5 opening, i.e., on the outer surface of the air pipe 2. Two collars 201 are rotatably connected to a hollow sleeve 202 close to one side wall. The front and rear walls of the hollow sleeve 202 are rotatably connected to the collars 201 and simultaneously wrap around the vent 5. A lever 6 is also connected to the outer surface of the hollow sleeve 202. The first end of the lever 6 passes through the hollow sleeve 202 and is located inside it but does not contact the air pipe 2. The lever 6 is hollow inside and has multiple micro-holes 601 spaced apart on its surface. The tail end of the lever 6 is connected to the arc surface inside the storage chamber 1.

[0028] By directly fixing lever 6 to the inner wall of storage compartment 1, when storage compartment 1 starts to rotate, lever 6 will be driven to rotate synchronously around air pipe 2. As lever 6 starts to rotate, the airflow input from air pump 3 also enters air pipe 2 from the output end. The airflow input by air pump 3 is a high-speed airflow. At this time, the airflow is ejected outward from the tail end of the five branch pipes 4, while some airflow continues to move inside air pipe 2, eventually contacting vent 5, and then the airflow enters vent 5, and then continues to enter lever 6. At this time, the high-speed airflow fills the lever 6 and then rushes out from the micro-holes 601 on the surface of the lever 6, directly contacting the corn seeds. The airflow impacts the gaps between the corn seeds and pushes out dust, pest excrement and pest corpses from the gaps. At the same time, the rotating storage chamber 1 continuously contacts the corn seed particles on its inner wall, continuously pushing the dust, pest excrement and pest corpses deposited at the bottom of the inner side of the storage chamber 1 upward. Simultaneously, the airflow blown by the branch pipe 4 toward the through hole 101 on the rear side wall of the storage chamber 1 blows out the dust, pest excrement and pest corpses.

[0029] Furthermore, as per the instruction manual... Figure 1 As shown, a collection box is also provided at the bottom of the storage compartment 1 and on both sides of the base plate. The collection box is a common box used to store dust, pest excrement and pest corpses blown out from the through hole 101. Furthermore, the collection box can be detachably installed on the middle part of the support rod 104 by bolts to directly contain dust, pest excrement and pest corpses. This avoids dust, pest excrement and pest corpses blown out by the wind from falling directly to the ground and causing secondary pollution. Since the recycling of dust, pest excrement and pest corpses is a technical solution that is very easy for those skilled in the art to think of, it will not be described in detail.

[0030] Example 1 In this embodiment, the corn seeds to be stored are poured directly into the storage chamber 1 through the feed inlet. Once the seeds have accumulated to two-thirds of the capacity, feeding is stopped, and the lid is closed. Since the storage chamber itself is a cool and dry environment, the through holes 101 on the front and rear walls of the storage chamber 1 do not need to be separately covered. If necessary, transparent tape can be used to directly cover the through holes 101, as shown in the attached instruction manual. Figure 1 As shown, the through holes 101 in this embodiment are arranged in a longitudinal, surrounding manner, so the transparent tape can be pulled directly when covering. After storage for more than a month, the corn seeds in storage compartment 1 can be periodically cleaned of impurities. If the through hole 101 is blocked, the transparent tape should be removed. If it is not blocked, the reduction motor should be started directly. The reduction motor drives the gear 106 to rotate, which meshes with the toothed groove 105 on the outer surface of storage compartment 1, causing storage compartment 1 to start rotating. The paddle plate 107 will move synchronously with the rotation of storage compartment 1. As the paddle plate moves, it will come into contact with the corn seed particles stored inside storage compartment 1. Since storage compartment 1 itself has friction, the combined action of the paddle plate 107 and the arc surface of the inner wall of storage compartment 1 will cause the corn seed particles deposited at the bottom of the inner side of storage compartment 1 to turn upward. It is worth noting that when the paddle plate 107 moves, it will contact the inner wall of storage compartment 1. A groove is formed, which digs out corn seed kernels and makes them float to the upper inner side of storage chamber 1. Then, as storage chamber 1 continues to rotate, the angle of the dial 107 swings from the three o'clock position to the twelve o'clock position, forming a downward slope. At this time, the corn seeds slide down, and the air rushed out by the branch pipe 4 impacts the gaps of the sliding corn seeds. In this embodiment, the two sets of branch pipes 4 are staggered with each other, so that the airflow blown by the ten branch pipes 4 does not interfere with each other. The branch pipe 4 is tilted at an upward angle. This angle can be used to blow the corn seed kernels that are lifted up by the dial 107 and fall down. After the wind comes into contact with the corn seed kernels, it will carry the pest excrement and insect corpses attached to the surface, and push all the existing pest excrement, insects and insect corpses towards the through hole 101 and push them out of the outside of storage chamber 1.

[0031] In use, the geared motor drives the gear 106 to rotate, thus meshing with the toothed groove 105 on the outer surface of the storage chamber 1. This causes the storage chamber 1 to begin rotating. As the storage chamber 1 rotates, the paddle plate 107 moves synchronously with it. As the paddle plate moves, it comes into contact with the corn seed kernels stored inside the storage chamber 1. Due to the inherent friction of the storage chamber 1, the combined action of the paddle plate 107 and the curved surface of the inner wall of the storage chamber 1 causes the corn seed kernels deposited at the bottom of the inner side of the storage chamber 1 to rise upwards. It is worth noting that the paddle plate 107 forms a groove with the inner wall of the storage chamber 1 during its movement. This groove digs out the corn seed kernels, causing them to float to the top of the inner side of the storage chamber 1. Then, as the storage chamber 1 rotates... The continuously rotating dial 107 swings from the three o'clock position to the twelve o'clock position, forming a downward slope. At this time, the corn seeds slide down, and the air rushed out from the branch pipe 4 impacts the gaps between the sliding corn seeds. The branch pipe 4 is tilted upwards at an angle that can blow the corn seed particles that have been lifted up by the dial 107 and then fall. After the wind comes into contact with the corn seed particles, it will carry the pest excrement and insect corpses attached to the surface, and push all the existing pest excrement, insects and insect corpses towards the through hole 101 and push them out of the outside of the storage chamber 1. The bottom of the storage chamber 1 and on both sides of the bottom plate are also provided with collection boxes, which are used to store the dust, pest excrement and pest corpses blown out from the through hole 101.

[0032] Example 2 In this embodiment, the method by which corn seeds enter storage chamber 1 is the same as in embodiment one, so it will not be described again. Similarly, in this embodiment, if needed, transparent tape can be used to directly cover the through hole 101 to form a completely sealed environment for storage. After storage for more than one month, the corn seeds in storage chamber 1 can be periodically cleaned of impurities. If the through hole 101 is blocked, the transparent tape is removed. If it is not blocked, the reduction motor is started directly. The reduction motor drives the gear 106 to rotate, thereby meshing with the toothed groove 105 on the outer surface of storage chamber 1, and then the storage chamber 1 starts to rotate. In this embodiment, the lever 6 is directly fixed to the inner wall of storage chamber 1. When storage chamber 1 starts to rotate, it will directly drive the lever 6 to start rotating around the air pipe 2 as the axis. As the lever 6 starts to rotate, the airflow input after the air pump 3 starts also flows from... The airflow enters the air pipe 2 from the output end. The airflow input by the air pump 3 is a high-speed airflow. At this time, the airflow is ejected outward from the tail end of the five branch pipes 4. At the same time, part of the airflow continues to move inside the air pipe 2 and finally contacts the vent 5. Then the airflow enters the vent 5 and continues to enter the lever 6. At this time, the high-speed airflow fills the lever 6 and then rushes out from the micro-holes 601 on the surface of the lever 6, directly contacting the corn seeds. The airflow impacts the gaps between the corn seeds and pushes out dust, pest excrement and pest corpses from the gaps. At the same time, the rotating storage chamber 1 continuously contacts the corn seed particles on its inner wall, continuously pushing the dust, pest excrement and pest corpses deposited at the bottom of the inner side of the storage chamber 1 upward. At the same time, the airflow blown by the branch pipes 4 toward the through hole 101 on the rear side wall of the storage chamber 1 blows out the dust, pest excrement and pest corpses.

[0033] In use, the gear 106 is rotated by the reduction motor, meshing with the toothed groove 105 on the outer surface of the storage chamber 1. This causes the storage chamber 1 to rotate. As the storage chamber 1 rotates, the lever 6 is directly and synchronously driven to rotate around the air pipe 2. As the lever 6 rotates, the air pump 3 starts, and the input airflow enters the air pipe 2 from the output end. The airflow input by the air pump 3 is a high-speed airflow. At this time, the airflow is ejected outward from the tail end of the five branch pipes 4, while some airflow continues to move inside the air pipe 2, eventually contacting the vent 5, and then the airflow enters the vent. The airflow enters the vent 5 and then continues into the lever 6. At this time, the high-speed airflow fills the lever 6 and then bursts out from the micropores 601 on the surface of the lever 6, directly contacting the corn seeds. The airflow impacts the gaps between the corn seeds and pushes out dust, insect excrement, and insect corpses from the gaps. At the same time, the rotating storage chamber 1 continuously contacts the corn seed particles on its inner wall, continuously pushing the dust, insect excrement, and insect corpses deposited at the bottom of the inner side of the storage chamber 1 upward. Simultaneously, the airflow blown by the branch pipe 4 toward the through hole 101 on the rear side wall of the storage chamber 1 blows out the dust, insect excrement, and insect corpses.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seed impurity removal device, comprising a storage bin (1) for holding corn seeds, the storage bin (1) being a circular hollow body with a feed inlet on its arc surface, the feed inlet being covered by a cover and the two being fixed together by bolts, characterized in that: The storage compartment (1) has a through opening (102) through the front and rear walls. A flange (103) is installed inside the through opening (102). The flange (103) is rotatably connected to the through opening (102). A support rod (104) is fixedly connected to the outside of the flange (103). The support rod (104) is vertically connected to the base plate. Through holes (101) are also opened around the flange (103), i.e., the front and rear walls of the storage compartment (1). An air pipe (2) is sleeved inside the flange (103). The tail end of the air pipe (2) passes through the through opening (102) located on the rear wall of the storage compartment (1) and forms a seal. The front end of the air pipe (2) is located on the outside of the front wall of the storage compartment (1) and is sealed to the air pump (3). The air tube (2) is located on the inner surface of the storage chamber (1) and has an impurity removal structure. The impurity removal structure includes a branch pipe (4) installed on the outer surface of the trachea (2) and communicating with its interior. There are multiple branch pipes (4), and the branch pipes (4) are fixedly connected to the trachea (2) at an inclined angle. The impurity removal structure also includes a dial plate (107), which is itself mounted around the arc surface inside the storage compartment (1).

2. The seed impurity removal device according to claim 1, characterized in that: The outer surface of the storage compartment (1) is also surrounded by a toothed groove (105), and a gear (106) meshes inside the toothed groove (105). The rear wall of the gear (106) is connected to the output end of a speed reduction motor fixedly mounted on the base plate.

3. The seed impurity removal device according to claim 2, characterized in that: The number of branch tubes (4) is ten, and every five branch tubes (4) are installed around the surface of the air pipe (2). The two sets of branch tubes (4) are installed at the front and rear ends of the part of the air pipe (2) located inside the storage chamber (1). The two sets of branch tubes (4) are inclined in opposite directions and are staggered from each other.

4. The seed impurity removal device according to claim 3, characterized in that: The dial plate (107) is polygonal or circular, and the dial plate (107) is fixed to the storage compartment (1) by welding.

5. The seed impurity removal device according to claim 2, characterized in that: The number of branch pipes (4) is five. The five branch pipes (4) are installed around the front end of the air pipe (2) inside the storage chamber (1), and the air pipe (2) is inclined towards the rear end of the storage chamber (1).

6. The seed impurity removal device according to claim 5, characterized in that: The impurity removal structure also includes a vent (5), which is opened through the middle part of the air pipe (2) located inside the storage chamber (1). A collar (201) is installed at the front and rear ends of the vent (5) opening, i.e., on the outer surface of the air pipe (2). Two collars (201) are rotatably connected to a hollow sleeve (202) close to one side wall. The front and rear walls of the hollow sleeve (202) are rotatably connected to the collar (201) and simultaneously wrap the vent (5). A lever (6) is also connected to the outer surface of the hollow sleeve (202). The head end of the lever (6) passes through the hollow sleeve (202) and is located inside it but does not contact the air pipe (2). The lever (6) is hollow inside and has multiple micro-holes (601) spaced apart on its surface. The tail end of the lever (6) is connected to the arc surface inside the storage chamber (1).

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