Efficient impurity removing and damage reducing processing technology and device for machine-picked cotton

Abstract

The application discloses a kind of machine-picked cotton high-efficiency impurity removal and damage reduction processing technology and device, and relates to the technical field of machine-picked cotton impurity removal.The application includes hopper and damage reduction and impurity removal assembly, the right side of the hopper is fixedly connected with guide roller group, the left side of the hopper is fixedly connected with reinspection shell, the damage reduction and impurity removal assembly includes control shell, the rear side of the control shell is fixedly connected with hopper.By damage reduction and impurity removal assembly, using vibration roller and reset mechanism cooperation, make grid frame vibrate up and down, the heavier impurities wrapped in flaky cotton fiber are shaken out, avoid the saw blade cylinder or the sawtooth and angle nail of high-speed rotating saw blade cylinder or thorn roller cylinder produce strong mechanical impact force and shearing force to cotton fiber, reduce the tensile and fracture stress of cotton fiber in the process of impurity separation, prevent effective fiber from being forcibly stripped and discharged with impurities outside the machine, reduce the loss rate of effective fiber, improve raw material utilization.

Description

Technical Field

[0001] This invention belongs to the field of impurity removal technology for machine-harvested cotton, and in particular relates to an efficient impurity removal and loss reduction process and device for machine-harvested cotton. Background Technology

[0002] The process of removing impurities from machine-harvested cotton refers to the technical process of quickly separating and removing non-fiber impurities such as branches, leaves, bolls, plastic film fragments, and dust mixed in with seed cotton after mechanized cotton harvesting through the synergistic action of multiple physical processes. Its core objective is to improve the cleanliness of raw cotton while preserving the integrity of cotton fibers to the maximum extent. This process follows the principle of starting with the easy and then moving to the difficult, starting with the large and then moving to the small, and falling off early to prevent breakage. It relies on equipment such as airflow screening, drum cleaning, and foreign fiber removal by winding rollers to achieve the graded removal of impurities.

[0003] The existing machine-harvested cotton processing equipment mainly consists of a cotton gin and a cotton cleaning machine connected in series. Its core impurity removal component is a high-speed rotating saw blade roller or licker roller. When the cotton passes through the gap between the saw blade roller and the fixed grid, impurities are separated by the combined action of the saw teeth hooking, the corner nails striking, and the airflow.

[0004] However, the impurity removal process causes significant mechanical damage to the cotton fibers, resulting in a high loss rate of effective fibers. This is because the saw teeth and corner nails of the high-speed rotating saw blade roller or licker roller generate strong mechanical impact and shearing forces when hooking and striking impurities. At the same time, the fixed grid applies rigid constraints to the cotton fibers, causing them to bear excessive tensile and breaking stress during the impurity separation process. Some effective fibers that should have been retained in the cotton bundle are forcibly peeled off and discharged from the machine with the impurities, resulting in waste of raw materials and reducing the final quality of the lint.

[0005] To address these issues, we provide a highly efficient impurity removal and loss reduction process and apparatus for machine-harvested cotton. Summary of the Invention

[0006] The purpose of this invention is to provide an efficient impurity removal and loss reduction process and device for machine-harvested cotton. By using loss reduction and impurity removal components and a lightweight impurity removal mechanism, the invention solves the problem that the impurity removal process of existing machine-harvested cotton impurity removal and loss reduction devices causes significant mechanical damage to cotton fibers, resulting in a high loss rate of effective fibers.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0008] This invention relates to a high-efficiency impurity removal and loss reduction processing device for machine-harvested cotton, comprising a hopper and a loss reduction and impurity removal assembly. A guide roller assembly is fixedly connected to the right side of the hopper, and a re-inspection shell is fixedly connected to the left side of the hopper. The loss reduction and impurity removal assembly includes a control shell, the rear side of which is fixedly connected to the hopper. A drive motor is fixedly connected to the right side of the control shell. A cam is fixedly connected to the left side of the drive motor's output end through the control shell. An adjustment frame is provided at the bottom of the cam, and a vibrating roller is fixedly connected to the top of the adjustment frame through the control shell. The left side of the control shell... A grid frame is fixedly connected to the reset mechanism. The inner cavity of the re-inspection shell is equipped with a light impurity removal mechanism. The hopper is used to receive impurities, and the guide roller group is used to squeeze the machine-picked cotton into thin sheets for easy impurity removal. The control shell facilitates the installation and fixation of the drive motor. The drive motor can cooperate with the cam to control the position of the adjustment frame and the vibrating roller. The vibrating roller can cooperate with the reset mechanism to control the grid frame to swing up and down continuously, throwing out heavier impurities without affecting the cotton fibers. The light impurity removal mechanism can clean and remove lighter impurities.

[0009] The present invention is further configured such that the lightweight impurity removal mechanism includes a perforated plate, the surface of which is fixedly connected to the inner wall of the re-inspection shell, an electric push rod is fixedly connected to the inner wall of the re-inspection shell, a movable plate is fixedly connected to the bottom of the output end of the electric push rod, and a pointed cone is fixedly connected to the bottom of the movable plate. The perforated plate facilitates the lifting of the cotton, enabling it to be stably transported to the outside of the re-inspection shell. The electric push rod is used to control the height of the movable plate and the pointed cone. The pointed cone can be inserted into the cotton to push the impurities wrapped in the cotton fibers into the mesh of the perforated plate.

[0010] The invention is further configured such that a servo motor is fixedly connected to the left side of the re-inspection shell, and a screw is fixedly connected to the right side of the output end of the servo motor through the re-inspection shell. A threaded sleeve is threadedly connected to the surface of the screw, and a suction hood is fixedly connected to the top of the threaded sleeve. The servo motor can cooperate with the screw to control the position of the threaded sleeve and the suction hood, so that it can continuously move back and forth, thereby increasing its suction range and sucking out light impurities in the cotton.

[0011] The invention is further configured such that a filter shell is fixedly connected to the rear side of the left side of the re-inspection shell, an exhaust fan is connected to the rear side of the filter shell, a filter frame is provided in the inner cavity of the filter shell, a corrugated pipe is connected to the top of the filter shell, and the end of the corrugated pipe away from the filter shell extends into the inner cavity of the suction hood. An electric cylinder is fixedly connected to the left side of the filter shell, and a squeeze roller is fixedly connected to the rear side of the output end of the electric cylinder. The filter shell facilitates the installation of the exhaust fan and the filter frame. The exhaust fan can extract the air inside the suction hood, allowing it to carry impurities into the filter shell for filtration. The electric cylinder can cooperate with the squeeze roller to squeeze the bottom of the filter frame, so that it can be stably installed inside the filter shell.

[0012] The present invention is further configured such that a positioning rod is fixedly connected between the two sides of the inner cavity of the re-inspection shell, a positioning sleeve is slidably connected to the surface of the positioning rod, and the top of the positioning sleeve is fixedly connected to the suction hood. The positioning sleeve can cooperate with the positioning rod to limit the suction hood and improve its stability during movement.

[0013] The present invention is further configured such that the reset mechanism includes a slide rod, the right side of the slide rod is fixedly connected to the control housing, and a sliding sleeve and a spring are sequentially fitted on the surface of the slide rod from top to bottom. The rear side of the sliding sleeve is fixedly connected to the grid frame. The slide rod and the sliding sleeve can cooperate with the spring to reset the grid frame after it is not squeezed, and can cooperate with the vibrating roller to control the grid frame to vibrate continuously.

[0014] The present invention is further configured such that a limiting post is fixedly connected to the bottom of the adjustment frame, the bottom of the limiting post extends through to the outside of the control shell, and the surface of the limiting post is slidably connected to the control shell. The limiting post is used to limit the adjustment frame and prevent it from tilting or shifting during movement.

[0015] The present invention is further configured such that a support frame is fixedly connected to both the front and rear sides of the re-inspection shell, and an installation hole is provided at the bottom of the support frame. The support frame can stably support the re-inspection shell and the hopper, and the installation hole can fix the support frame in a designated working position.

[0016] The present invention is further configured such that conveying openings are provided on both sides of the re-inspection shell, and a guide roller is fixedly connected to the left side of the re-inspection shell. The conveying openings facilitate the conveying of cotton, and the guide roller can guide the cotton after impurity removal so that it can be wound up by the winding equipment.

[0017] A high-efficiency impurity removal and loss reduction process for machine-harvested cotton includes the following steps: S1, the machine-harvested cotton is squeezed into a thin sheet by a guide roller group, which removes large impurities. The thin sheet cotton then enters the grid frame. The drive motor is turned on, and the drive motor works with the cam to control the movement of the adjustment frame and the vibrating roller. The vibrating roller impacts the grid frame, and a reset mechanism is used to reset it. By continuously controlling the grid frame to vibrate up and down, heavier impurities wrapped in the cotton fibers are shaken out, and the impurities are collected by a hopper.

[0018] S2. Then the thin cotton flakes continue to be conveyed into the re-inspection shell. At the same time, the cotton is wound up using a winding device. When the cotton enters the re-inspection shell, the exhaust fan is turned on. The exhaust fan draws the air inside the suction hood into the filter shell. During the conveying process, the boll shells and leaf debris wrapped in the cotton are sucked into the filter shell.

[0019] S3. In order to ensure the impurity removal effect, the electric push rod is turned on when the suction hood is cleaning up the waste. The electric push rod controls the moving plate and the cone to move down. The cone is used to push out the waste wrapped in the cotton and the wrapped fibers, thereby improving the suction effect of the suction hood.

[0020] S4. Activate the servo motor. The servo motor works in conjunction with the screw to control the movement of the threaded sleeve and suction hood, enabling continuous left-right reciprocating movement. This further improves the suction hood's ability to remove impurities from the cotton, cleaning out lightweight debris trapped within the cotton fibers. Simultaneously, since the high-speed rotating gears do not directly contact the cotton during the impurity removal process, fiber damage is effectively reduced.

[0021] The present invention has the following beneficial effects.

[0022] 1. This invention utilizes a loss reduction and impurity removal component, in conjunction with a vibrating roller and a reset mechanism, to cause the grid frame to vibrate up and down, dislodging heavier impurities encased in the thin cotton fibers. This avoids the strong mechanical impact and shearing force exerted on the cotton fibers by the saw teeth and corner nails of the high-speed rotating saw blade roller or licker roller, reducing the tensile and breaking stress on the cotton fibers during impurity separation, preventing the effective fibers from being forcibly peeled off and discharged with the impurities, reducing the loss rate of effective fibers, and improving the utilization rate of raw materials.

[0023] 2. This invention utilizes a lightweight impurity removal mechanism that uses a pointed cone to push out waste debris wrapped in cotton fibers. Combined with the reciprocating movement of a suction hood, lightweight impurities are suctioned and cleaned. An exhaust fan draws the air carrying impurities into the filter housing for filtration. Throughout the impurity removal process, there is no direct contact between high-speed rotating teeth and cotton, avoiding rigid constraints on cotton fibers by the fixed grid, reducing mechanical damage to cotton fibers, ensuring the integrity of cotton fibers, and improving the final quality of lint. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0025] Figure 1 A perspective view of a highly efficient impurity removal and loss reduction process and apparatus for machine-harvested cotton;

[0026] Figure 2 A side view of a high-efficiency impurity removal and loss reduction process and apparatus for machine-harvested cotton;

[0027] Figure 3 This is a schematic diagram of a loss reduction and impurity removal component and a lightweight impurity removal mechanism in a high-efficiency impurity removal and loss reduction process and device for machine-harvested cotton.

[0028] Figure 4 A cross-sectional view of the re-inspection shell in a highly efficient impurity removal and loss reduction process and device for machine-harvested cotton;

[0029] Figure 5 A partial cross-sectional view of the re-inspection shell in a highly efficient impurity removal and loss reduction process and device for machine-harvested cotton;

[0030] Figure 6 A partial cross-sectional view of the filter shell in a high-efficiency impurity removal and loss reduction process and device for machine-harvested cotton;

[0031] Figure 7 This is a partial schematic diagram of the loss reduction and impurity removal components in a high-efficiency impurity and loss reduction processing technology and device for machine-harvested cotton.

[0032] Figure 8 This is a cross-sectional view of the control shell in a high-efficiency impurity removal and loss reduction process and device for machine-harvested cotton.

[0033] In the attached diagram: 1. Hopper; 2. Guide roller assembly; 3. Re-inspection shell; 4. Loss reduction and impurity removal assembly; 41. Control shell; 42. Drive motor; 43. Cam; 44. Adjusting frame; 45. Vibrating roller; 46. Grille frame; 47. Reset mechanism; 471. Slide rod; 472. Sliding sleeve; 473. Spring; 5. Light impurity removal mechanism; 51. Perforated plate; 52. Electric push rod; 53. Movable plate; 54. Cone; 55. Servo motor; 56. Screw; 57. Threaded sleeve; 58. Suction hood; 6. Filter shell; 7. Exhaust fan; 8. Filter frame; 9. Corrugated pipe; 10. Electric cylinder; 11. Extrusion roller; 12. Support frame. Detailed Implementation

[0034] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Please see Figures 1-8This invention relates to an efficient impurity removal and loss reduction processing device for machine-harvested cotton, comprising a hopper 1 and a loss reduction and impurity removal component 4. A guide roller group 2 is fixedly connected to the right side of the hopper 1, and a re-inspection shell 3 is fixedly connected to the left side of the hopper 1. The loss reduction and impurity removal component 4 includes a control shell 41, the rear side of which is fixedly connected to the hopper 1. A drive motor 42 is fixedly connected to the right side of the control shell 41. A cam 43 is fixedly connected to the left side of the output end of the drive motor 42 through the control shell 41. An adjustment frame 44 is provided at the bottom of the cam 43. A vibrating roller 45 is fixedly connected to the top of the adjustment frame 44 through the control shell 41. A grid frame 46 is fixedly connected to the left side of the control shell 41 through a reset mechanism 47. A lightweight impurity removal mechanism 5 is provided in the inner cavity of the re-inspection shell 3.

[0036] Specifically: hopper 1 is used to receive impurities, guide roller group 2 is used to squeeze machine-picked cotton into thin sheets for easy impurity removal, control housing 41 facilitates the installation and fixation of drive motor 42, drive motor 42 can cooperate with cam 43 to control the position of adjustment frame 44 and vibrating roller 45, vibrating roller 45 can cooperate with reset mechanism 47 to control grid frame 46 to swing up and down continuously, throwing out heavier impurities without affecting cotton fibers, and light impurity removal mechanism 5 can clean and remove lighter impurities.

[0037] The lightweight impurity removal mechanism 5 includes a perforated plate 51. The surface of the perforated plate 51 is fixedly connected to the inner wall of the re-inspection shell 3. An electric push rod 52 is fixedly connected to the inner wall of the re-inspection shell 3. A movable plate 53 is fixedly connected to the bottom of the output end of the electric push rod 52. A pointed cone 54 is fixedly connected to the bottom of the movable plate 53. A servo motor 55 is fixedly connected to the left side of the re-inspection shell 3. A screw 56 is fixedly connected to the right side of the output end of the servo motor 55 through the re-inspection shell 3. A threaded sleeve 57 is threadedly connected to the surface of the screw 56. A suction cover 58 is fixedly connected to the top of the threaded sleeve 57.

[0038] Specifically: the perforated plate 51 facilitates the lifting of cotton, allowing it to be smoothly transported to the outside of the inspection shell 3; the electric push rod 52 controls the height of the movable plate 53 and the cone 54; the cone 54 can be inserted into the cotton to push impurities wrapped in the cotton fibers into the mesh of the perforated plate 51; the servo motor 55 can cooperate with the screw 56 to control the position of the threaded sleeve 57 and the suction hood 58, enabling them to move back and forth continuously, increasing their suction range and sucking out light impurities from the cotton.

[0039] A filter shell 6 is fixedly connected to the rear side of the left side of the re-inspection shell 3. An exhaust fan 7 is connected to the rear side of the filter shell 6. A filter frame 8 is provided in the inner cavity of the filter shell 6. A bellows 9 is connected to the top of the filter shell 6. The end of the bellows 9 away from the filter shell 6 passes through the inner cavity of the suction hood 58. An electric cylinder 10 is fixedly connected to the left side of the filter shell 6. A squeezing roller 11 is fixedly connected to the rear side of the output end of the electric cylinder 10. A positioning rod is fixedly connected between the two sides of the inner cavity of the re-inspection shell 3. A positioning sleeve is slidably connected to the surface of the positioning rod. The top of the positioning sleeve is fixedly connected to the suction hood 58.

[0040] Specifically: the filter housing 6 facilitates the installation of the exhaust fan 7 and the filter frame 8. The exhaust fan 7 can extract the air inside the suction hood 58, allowing it to carry impurities into the filter housing 6 for filtration. The electric cylinder 10 can cooperate with the squeeze roller 11 to squeeze the bottom of the filter frame 8, so that it can be stably installed inside the filter housing 6. The positioning sleeve can cooperate with the positioning rod to limit the suction hood 58, improving its stability during movement.

[0041] The reset mechanism 47 includes a slide rod 471. The right side of the slide rod 471 is fixedly connected to the control housing 41. A sliding sleeve 472 and a spring 473 are sequentially fitted on the surface of the slide rod 471 from top to bottom. The rear side of the sliding sleeve 472 is fixedly connected to the grid frame 46. A limit post is fixedly connected to the bottom of the adjusting frame 44. The bottom of the limit post extends through to the outside of the control housing 41. The surface of the limit post is slidably connected to the control housing 41. A support frame 12 is fixedly connected to the front and rear sides of the re-inspection housing 3. An installation hole is opened at the bottom of the support frame 12. Conveying openings are opened on both sides of the re-inspection housing 3. A guide roller is fixedly connected to the left side of the re-inspection housing 3.

[0042] Specifically: the slide bar 471 and the slide sleeve 472 can cooperate with the spring 473 to reset the grid frame 46 after it is not squeezed, and can cooperate with the vibrating roller 45 to control the grid frame 46 to vibrate continuously. The limiting post is used to limit the adjustment frame 44 to prevent it from tilting or shifting during movement. The support frame 12 can stably support the inspection shell 3 and the hopper 1. The mounting hole can fix the support frame 12 in the designated working position. The conveying opening facilitates the conveying of cotton. The guide roller can guide the cotton after impurity removal so that it can be wound up by the winding equipment.

[0043] A high-efficiency impurity removal and loss reduction process for machine-harvested cotton includes the following steps: S1, the machine-harvested cotton is squeezed by the guide roller group 2 to make it into a thin sheet, which can remove large impurities. Then, the thin sheet cotton enters the grid frame 46. The drive motor 42 is turned on. The drive motor 42 and the cam 43 cooperate to control the movement of the adjustment frame 44 and the vibrating roller 45. The vibrating roller 45 impacts the grid frame 46. At the same time, the reset mechanism 47 resets it. By continuously controlling the grid frame 46 to vibrate up and down, the heavier impurities wrapped in the thin cotton fibers are shaken out. The impurities are collected by the hopper 1.

[0044] S2. Then the thin cotton flakes continue to be conveyed into the re-inspection shell 3. At the same time, the cotton is wound up using a winding device. When the cotton enters the re-inspection shell 3, the exhaust fan 7 is turned on. The exhaust fan 7 draws the air inside the suction hood 58 into the filter shell 6. During the conveying process, the boll shells and leaf debris wrapped in the cotton are sucked into the filter shell 6.

[0045] S3. In order to ensure the removal effect, when the suction hood 58 is cleaning up the waste, the electric push rod 52 is turned on. The electric push rod 52 controls the movable plate 53 and the cone 54 to move down. The cone 54 is used to push out the waste wrapped in the cotton and the wrapped fibers, thereby improving the suction effect of the suction hood 58.

[0046] S4. Start the servo motor 55. The servo motor 55 can work with the screw 56 to control the movement of the threaded sleeve 57 and the suction hood 58, so that it can move back and forth continuously, further improving the suction hood 58's effect on removing impurities from cotton, cleaning the light waste wrapped in cotton fibers, and at the same time, the high-speed rotating teeth do not come into direct contact with the cotton during the cotton fiber impurity removal process, effectively reducing fiber damage.

Claims

1. A high-efficiency impurity removal and loss reduction processing device for machine-harvested cotton, characterized in that: It includes a hopper (1) and a loss reduction and impurity removal assembly (4). A guide roller assembly (2) is fixedly connected to the right side of the hopper (1), and a re-inspection shell (3) is fixedly connected to the left side of the hopper (1). The loss reduction and impurity removal component (4) includes a control shell (41), the rear side of which is fixedly connected to the hopper (1), a drive motor (42) is fixedly connected to the right side of the control shell (41), a cam (43) is fixedly connected to the left side of the output end of the drive motor (42) through the control shell (41), an adjustment frame (44) is provided at the bottom of the cam (43), a vibrating roller (45) is fixedly connected to the top of the adjustment frame (44) through the control shell (41), and a grid frame (46) is fixedly connected to the left side of the control shell (41) through a reset mechanism (47). The inner cavity of the re-inspection shell (3) is provided with a lightweight impurity removal mechanism (5).

2. The efficient impurity removal and loss reduction processing device for machine-harvested cotton according to claim 1, characterized in that: The lightweight impurity removal mechanism (5) includes a perforated plate (51), the surface of which is fixedly connected to the inner wall of the re-inspection shell (3), an electric push rod (52) is fixedly connected to the inner wall of the re-inspection shell (3), a movable plate (53) is fixedly connected to the bottom of the output end of the electric push rod (52), and a pointed cone (54) is fixedly connected to the bottom of the movable plate (53).

3. The efficient impurity removal and loss reduction processing device for machine-harvested cotton according to claim 1, characterized in that: A servo motor (55) is fixedly connected to the left side of the re-inspection shell (3). A screw (56) is fixedly connected to the right side of the output end of the servo motor (55) through the re-inspection shell (3). A threaded sleeve (57) is threadedly connected to the surface of the screw (56). A suction cover (58) is fixedly connected to the top of the threaded sleeve (57).

4. The efficient impurity removal and loss reduction processing device for machine-harvested cotton according to claim 3, characterized in that: A filter shell (6) is fixedly connected to the rear side of the left side of the re-inspection shell (3). An exhaust fan (7) is connected to the rear side of the filter shell (6). A filter frame (8) is provided in the inner cavity of the filter shell (6). A corrugated pipe (9) is connected to the top of the filter shell (6). The end of the corrugated pipe (9) away from the filter shell (6) extends into the inner cavity of the suction hood (58). An electric cylinder (10) is fixedly connected to the left side of the filter shell (6). A squeeze roller (11) is fixedly connected to the rear side of the output end of the electric cylinder (10).

5. The efficient impurity removal and loss reduction processing device for machine-harvested cotton according to claim 3, characterized in that: A positioning rod is fixedly connected between the two sides of the inner cavity of the re-inspection shell (3), and a positioning sleeve is slidably connected to the surface of the positioning rod. The top of the positioning sleeve is fixedly connected to the suction cover (58).

6. The efficient impurity removal and loss reduction processing device for machine-harvested cotton according to claim 1, characterized in that: The reset mechanism (47) includes a slide rod (471), the right side of which is fixedly connected to the control housing (41), and a sliding sleeve (472) and a spring (473) are sequentially fitted on the surface of the slide rod (471) from top to bottom. The rear side of the sliding sleeve (472) is fixedly connected to the grid frame (46).

7. The efficient impurity removal and loss reduction processing device for machine-harvested cotton according to claim 1, characterized in that: The bottom of the adjustment frame (44) is fixedly connected to a limiting post, the bottom of which extends through to the outside of the control shell (41), and the surface of the limiting post is slidably connected to the control shell (41).

8. The efficient impurity removal and loss reduction processing device for machine-harvested cotton according to claim 1, characterized in that: The front and rear sides of the re-inspection shell (3) are fixedly connected to a support frame (12), and the bottom of the support frame (12) is provided with an installation hole.

9. The efficient impurity removal and loss reduction processing device for machine-harvested cotton according to claim 1, characterized in that: Both sides of the re-inspection shell (3) are provided with conveying openings, and a guide roller is fixedly connected to the left side of the re-inspection shell (3).

10. A high-efficiency impurity removal and loss reduction process for machine-harvested cotton, characterized in that: Includes the following steps: S1. The machine-picked cotton is squeezed by the guide roller group (2) to make it into a thin sheet, while removing large impurities. Then the thin sheet cotton enters the grid frame (46). The drive motor (42) is turned on. The drive motor (42) and the cam (43) work together to control the movement of the adjustment frame (44) and the vibrating roller (45). The vibrating roller (45) impacts the grid frame (46) and resets it using the reset mechanism (47). By continuously controlling the grid frame (46) to vibrate up and down, the heavier impurities wrapped in the thin cotton fibers are shaken out. The impurities are collected by the hopper (1). S2. Then the thin cotton flakes continue to be conveyed into the re-inspection shell (3), and the cotton is wound up using a winding device. When the cotton enters the re-inspection shell (3), the exhaust fan (7) is turned on. The exhaust fan (7) draws the air inside the suction hood (58) into the filter shell (6). During the conveying process, the boll shells and leaf debris wrapped in the cotton are sucked into the filter shell (6). S3. In order to ensure the removal effect, when the suction hood (58) is cleaning up the waste, the electric push rod (52) is turned on. The electric push rod (52) controls the movable plate (53) and the cone (54) to move down. The cone (54) is used to push out the waste wrapped in the cotton and the wrapped fibers, thereby improving the suction effect of the suction hood (58). S4. Turn on the servo motor (55). The servo motor (55) can work with the screw (56) to control the threaded sleeve (57) and the suction hood (58) to move, so that it can move back and forth continuously, further improving the suction hood (58) to remove impurities from cotton, cleaning the light waste wrapped in cotton fibers, and at the same time, there is no high-speed rotating toothed part in direct contact with cotton during the cotton fiber impurity removal process, which effectively reduces fiber damage.

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