A kind of impurity removal device for machine-picked cotton in Xinjiang and its using method

Abstract

The present invention relates to the technical field of cotton impurity removal, and in particular to an impurity removal device for machine-picked cotton in Xinjiang and a method for using the device. The device comprises a cotton conveying pipe; one end of the cotton conveying pipe is connected to a dual-axial flow impurity remover, and the other end is connected to a heavy object separator; a fan; the fan is installed on the cotton conveying pipe and provides the cotton conveying pipe with a positive pressure airflow for conveying cotton; and an impurity removal component; the impurity removal component is installed at the connection point between the cotton conveying pipe and the dual-axial flow impurity remover, and collects impurities in the cotton conveyed in the pipe by friction. The device is not only simple in structure, but also has a high efficiency in removing impurities in cotton, especially for impurities with a high sugar content in machine-picked cotton, and has a good impurity removal effect, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of cotton impurity removal, and in particular to an impurity removal device for machine-picked cotton in Xinjiang and a use method thereof. Background Art

[0002] The formation of all textiles is inseparable from yarn, and controlling the intrinsic quality of yarn is the basis of textile quality.

[0003] The biggest disadvantage of machine-picked cotton is that it contains high levels of impurities and short fibers, which are difficult for ginning factories to handle and put a lot of pressure on textile factories.

[0004] In addition, due to the influence of the climate and environment, Xinjiang cotton often has a high sugar content in certain regions. After being machine-picked, cotton with high sugar content will have more impurities. Many tiny sugar molecules will stick together with short fibers. After being produced in the textile factory, the entire process will have sticking problems, seriously affecting product quality. The existing equipment in the cotton cleaning process of the spinning mill has limited efficiency in removing impurities and removing short fibers. As a result, harmful impurities and short fibers in the mat cotton cannot be effectively and timely removed, and flow into the subsequent process, causing the subsequent combing burden to increase, the yarn quality cannot be guaranteed, and even defective yarn will be formed, resulting in high production costs. After the defective yarn flows into the subsequent process, it directly affects the actual quality and affects the economic benefits of the enterprise.

[0005] The above content is only used to assist in understanding the technical solution of the present invention and does not mean that the above content is the closest prior art. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an impurity removal device for machine-picked cotton in Xinjiang and a method of using the same. The device not only has a simple structure, but also has a high efficiency in removing impurities in cotton, especially impurities with high sugar content in machine-picked cotton, and has a good impurity removal effect, thereby improving production efficiency.

[0007] To achieve the above object, the technical solution of the present invention is implemented as follows: a cotton impurity removal device for machine-picked cotton in Xinjiang, comprising: a cotton conveying pipe; one end of the cotton conveying pipe is connected to a heavy object separator, and the other end is connected to a double-axial flow impurity remover;

[0008] The fan is installed on the cotton conveying pipeline and provides a positive pressure airflow for conveying cotton to the cotton conveying pipeline;

[0009] The impurity removal component is installed at the connection point between the cotton conveying pipeline and the double-axial flow impurity remover, and collects impurities in the cotton.

[0010] Preferably, the impurity removal component includes a impurity removal box and a friction plate; the feed port of the impurity removal box is connected to the cotton conveying pipeline, the discharge port of the impurity removal box is connected to the dual-axial flow impurity remover, and the feed port of the impurity removal box is located lower than the discharge port of the impurity removal box in the vertical direction; the friction plate is horizontally arranged in the impurity removal box, one end of the impurity removal box is connected to the feed port, and the other end of the impurity removal box is connected to the discharge port, and the friction plate is provided with a channel for the cotton impurities to fall.

[0011] Preferably, the channel provided on the friction plate includes long strip-shaped through holes which are opened in sequence and at equal intervals along the traveling direction of the cotton.

[0012] Preferably, there are stainless steel dust rods between the long strip through holes, and there are 7 stainless steel dust rods.

[0013] Preferably, the friction plates are arranged at an angle of 170 degrees along the horizontal direction.

[0014] Preferably, the impurity removal component also includes a cotton guide plate; the cotton guide plate is horizontally arranged at the feed inlet of the impurity removal box, one end of which is hinged to the rod body of the fixed rod installed at the feed inlet of the impurity removal box, and upper adjustment bolts are provided on both sides of the other end; the upper adjustment bolts are installed in the arc hole on the impurity removal box.

[0015] Preferably, the impurity removal component also includes an impurity guide plate arranged below the cotton guide plate; the impurity guide plate is horizontally arranged at the feed inlet of the impurity removal box, one end of which is hinged to the rod body of the fixed rod installed at the feed inlet of the impurity removal box, and lower adjustment bolts are provided on both sides of the other end; the lower adjustment bolts are installed in the arc hole.

[0016] Preferably, the friction plate divides the interior of the impurity removal box into a cotton passing area and an impurity falling storage area in the vertical direction; a first observation window and a second observation window are provided on one side of the impurity removal box; the first observation window is opposite to the cotton passing area inside the impurity removal box; the second observation window is opposite to the impurity falling storage area inside the impurity removal box.

[0017] Preferably, a movable gate that can be opened and closed is provided at the bottom of the impurity removal box.

[0018] Preferably, the use steps are as follows:

[0019] S1: The operator starts the heavy object separator connected to the cotton conveying pipeline to perform preliminary impurity removal on the cotton and process the cotton into flocs;

[0020] S2; the operator starts the fan installed on the cotton conveying pipe, which applies positive pressure airflow in the cotton conveying pipe, and transports the flocculent cotton along the inside of the cotton conveying pipe toward the direction where the dual-axial flow impurity remover is located;

[0021] S3; Under the action of positive pressure airflow and positive pressure principle of the pipeline, the impurities in the cotton are located in the lower layer of the pipeline due to weight during the operation of the pipeline, and the impurities in the cotton enter the feed port of the impurity removal box along the cotton conveying pipeline together with the cotton;

[0022] S4; The operator adjusts the horizontal angles of the cotton guide plate and the impurity guide plate at the inlet of the impurity removal box by moving the upper adjustment bolt or the lower adjustment bolt; the clean cotton in the upper layer of cotton passes through the inlet of the impurity removal box and enters the outlet of the impurity removal box along the cotton guide plate; the cotton containing impurities in the lower layer of cotton passes through the inlet of the impurity removal box and is guided to the friction plate by the impurity guide plate;

[0023] S5; the cotton containing impurities crawls along the surface of the friction plate under the action of positive pressure airflow, and the impurities rub and collide with the cotton and the friction plate surface and eventually fall into the impurity drop storage area of ​​the impurity removal box along the through hole between the stainless steel dust rods;

[0024] S6; the operator observes the cotton passing through the cotton removal box through the first observation window and adjusts the horizontal angle of the cotton guide plate;

[0025] S7; the operator observes the impurities falling through the second observation window and adjusts the horizontal angle of the impurity deflector to separate the impurities from the storage area;

[0026] S8: After the impurity removal process in the cotton is completed, the operator turns off the fan and opens the movable gate at the bottom of the impurity removal box to centrally process the impurities separated from the cotton.

[0027] The beneficial effects of the present invention are embodied in:

[0028] (1) The present invention sets a cotton conveying pipe between the heavy object separator and the dual-axial flow impurity remover, and installs a fan on the pipe to provide positive pressure airflow inside the pipe, so that the cotton that has been preliminarily processed by the heavy object separator can enter the dual-axial flow impurity remover along the cotton conveying pipe. At the same time, under the action of the positive pressure airflow, the impurities in the cotton will run along the lower layer of the cotton conveying pipe due to their own gravity. At the same time, an impurity removal component that can perform friction impurity removal on the cotton conveyed in the pipe is set at the connection point between the cotton conveying pipe and the dual-axial flow impurity remover, so that the impurities in the cotton are intercepted and collected due to the friction barrier after passing through the impurity removal component, thereby completing the impurity removal process in the cotton. Through such a setting, not only the structure of the entire device is simple, but also the impurities in the cotton are removed stably and efficiently, and it is easy to promote.

[0029] (2) The present invention sets a dust removal box and a friction plate, connects the inlet of the dust removal box with the cotton conveying pipeline, connects the outlet of the dust removal box with the dual-axial flow dust removal machine, and the inlet of the dust removal box is located lower than the outlet of the dust removal box in the vertical direction. At the same time, the outlet and inlet of the dust removal box are connected by a friction plate, and a channel for the cotton impurities to fall is provided on the friction plate. Through such a setting, the friction plate forms a slope, and when the cotton passes through the friction plate under the conveyance of the positive pressure airflow, it will produce a climbing process along the plate surface of the friction plate. During the climbing process, the impurities at the bottom of the cotton fall along the channel provided on the plate surface of the friction plate due to their own gravity, friction with the plate surface of the friction plate, and the impact of the positive pressure airflow. The dust removal box completes the collection of impurities in the cotton, thereby separating the impurities from the cotton and achieving the removal effect.

[0030] (3) The present invention has been verified through multiple experiments. When the friction plate is arranged at an angle of 170 degrees in the horizontal direction, it can not only ensure the efficiency of cotton passing through the impurity removal box, but also ensure the best removal effect of impurities in the cotton.

[0031] (4) The present invention is provided with a cotton deflector; the cotton deflector is horizontally arranged at the inlet of the dust collecting box, one end of the cotton deflector is hinged to the rod body of the fixed rod installed at the inlet of the dust collecting box, and the other end is provided with upper adjustment bolts on both sides; the upper adjustment bolts are installed in the arc hole on the dust collecting box. Through this arrangement, the cotton passing through the inlet of the dust collecting box is preliminarily separated, so that the upper layer of clean cotton is directly transported to the outlet of the dust collecting box by the positive pressure airflow, which accelerates the transportation of the cotton. At the same time, the use angle of the cotton deflector can be adjusted according to the size of the positive pressure airflow and the transportation situation of the cotton, thereby improving the flexibility of the device in cotton separation.

[0032] (5) The present invention sets an impurity guide plate below the cotton guide plate; the impurity guide plate is arranged horizontally at the inlet of the impurity removal box, one end of which is hinged to the rod body of the fixed rod installed at the inlet of the impurity removal box, and the other end is provided with lower adjustment bolts on both sides; the lower adjustment bolts are installed in the arc hole. Through such an arrangement, the impurity guide plate and the cotton guide plate form a V-shaped separation structure arranged in the horizontal direction at the inlet of the impurity removal box, which can not only guide the impurities in the cotton to the friction plate in a direction, but also change the pressure of the positive pressure airflow when it flows through this place by adjusting the angle of the impurity guide plate under the condition of stable positive pressure airflow, so that the friction force and impact force between the cotton containing impurities and the friction plate at this place will be increased, so that the impurities in the cotton can fully contact the friction plate, thereby improving the separation effect of impurities in the cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A top view of the present invention;

[0034] Figure 2 Schematic diagram of the internal structure of the impurity removal box of the present invention;

[0035] Figure 3 It is a structural schematic diagram of the friction plate of the impurity removal box of the present invention.

[0036] Description of reference numerals:

[0037] 10. Heavy object separator; 20. Fan; 30. Cotton conveying pipeline; 40. Trash removal box;

[0038] 41. Friction plate; 411. Stainless steel dust rod; 42. First observation window; 43. Second observation window;

[0039] 44. Movable gate; 45. Arc hole; 46. Cotton guide plate; 47. Impurity guide plate; 48. Lower adjustment bolt; 49. Upper adjustment bolt; 50. Double-axial flow impurity remover. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] Example 1

[0042] See also Figure 1-3 As shown:

[0043] The present invention provides an impurity removal device for machine-picked cotton in Xinjiang, comprising a cotton conveying pipe 30. One end of the cotton conveying pipe 30 is connected to a heavy object separator 10, and the other end is connected to a dual-axial flow impurity remover 50. The cotton processed in the heavy object separator 10 is conveyed to the dual-axial flow impurity remover 50 through the cotton conveying pipe 30 for further production processing. A fan 20 is installed on the cotton conveying pipe 30; starting the fan 20 can provide the cotton conveying pipe 30 with a positive pressure airflow for conveying cotton. When the cotton conveying pipe 30 is filled with positive pressure airflow, the high-sugar particulate matter and impurities in the cotton are located in the lower layer of the pipe due to weight during the operation of the pipe. At the same time, an impurity removal component for frictionally removing impurities from the cotton conveyed in the pipe is provided at the connection point between the cotton conveying pipe 30 and the dual-axial flow impurity remover 50.

[0044] The impurity removal assembly consists of an impurity removal box 40 and a friction plate 41.

[0045] The feed port of the impurity removal box 40 is set to be a flat trumpet shape and is connected to the cotton conveying pipe 30, while the discharge port of the impurity removal box 40 is set to be a flat inverted trumpet shape and is connected to the double-axial flow impurity remover 50, and the feed port of the impurity removal box 40 is lower than the discharge port of the impurity removal box 40 in the vertical direction.

[0046] The friction plate 41 is arranged horizontally in the impurity removal box 40, with one end of the friction plate 41 connected to the inlet of the impurity removal box 40 and the other end connected to the outlet of the impurity removal box 40. The friction plate 41 is provided with a channel for the cotton impurities to fall. The friction plate 41 is arranged at an angle of 170 degrees in the horizontal direction.

[0047] Through such a setting, when the cotton in the cotton conveying pipe 30 enters the feed port of the impurity removal box 40, it can be transformed from a cylindrical shape squeezed by the cotton conveying pipe 30 to a flat trumpet shape, so that it can be molded into a flat block and fully contact the friction plate 41.

[0048] Furthermore, as the cotton in the cotton conveying pipe 30 passes through the friction plate 41, the friction plate 41 is angled, causing the cotton to climb a slope. Due to their weight, the high-sugar particles and impurities in the cotton are located at the lower layer of the pipe during operation. Consequently, as the cotton climbs the slope, the high-sugar particles and impurities fall along the downward path of the friction plate 41. Simultaneously, the positive pressure airflow travels in a direction opposite to the upper surface of the friction plate 41, striking the cotton as it passes through the friction plate 41, accelerating the high-sugar particles and impurities in the cotton to fall along the downward path of the friction plate 41.

[0049] The passageway in the friction plate 41 consists of elongated through-holes spaced evenly apart along the cotton's travel direction. The length of each elongated through-hole is perpendicular to the cotton's travel direction. Between these elongated through-holes are stainless steel dust rods 411. The diameter of these elongated through-holes ranges from 5 to 12 mm. There are seven stainless steel dust rods 411.

[0050] Through such a setting, when impurities in the cotton pass through the stainless steel dust stick 411, under the action of the positive pressure airflow, the impurities in the cotton collide and rub against the stainless steel dust stick 411, so that they can fall along the through holes between the stainless steel dust sticks 411.

[0051] The stainless steel dust rods 411 have seven stepped sections. As the raw cotton flows through the pipe, it "climbs" and vibrates. Under the influence of airflow and pressure differential, sugar particles and other impurities are ejected and removed, truly achieving "early removal and less breakage" and more thorough impurity removal. This also protects the fibers, reduces the burden on carding, and improves spinning quality.

[0052] The impurity removal component also includes a cotton deflector 46; the cotton deflector 46 is horizontally arranged at the feed inlet of the impurity removal box 40, one end of which is hinged to the rod body of the fixed rod installed at the feed inlet of the impurity removal box 40, and upper adjustment bolts 49 are provided on both sides of the other end; the upper adjustment bolts 49 are installed in the arc hole 45 on the side of the impurity removal box 40.

[0053] The end of the fixing rod coincides with the center of the circular arc hole 45 , so that the horizontal arrangement angle of the cotton deflector 46 can be adjusted by moving the upper adjustment bolt 49 along the circular arc hole 45 .

[0054] The impurity removal assembly also includes an impurity deflector 47 positioned below the cotton deflector 46. Impurity deflector 47 is positioned horizontally at the inlet of the impurity removal box 40. One end of the impurity deflector 47 is hinged to the shaft of a fixed rod mounted at the inlet of the impurity removal box 40, and the other end is flanked by lower adjustment pins 48. Lower adjustment pins 48 are mounted within the circular aperture 45. A sealing structure is provided within the circular aperture 45, allowing it to move within the circular aperture 45 along with the lower adjustment pins 48 and upper adjustment pins 49, while maintaining a full seal. Furthermore, angle markings are provided along the edges of the circular aperture 45, serving as a reference for the operator when adjusting the horizontal angles of the cotton deflector 46 and impurity deflector 47.

[0055] The cotton guide plate 46 and the impurity guide plate 47 form a horizontal V-shaped structure at the inlet of the impurity removal box 40, which guides the cotton entering the inlet of the impurity removal box 40 in layers. The clean cotton in the upper layer passes through the cotton guide plate 46 and directly enters the outlet of the impurity removal box 40; while the cotton containing impurities in the lower layer is guided by the impurity guide plate 47 to the friction plate 41, and the separation process of cotton and impurities is completed on the friction plate 41, thereby improving the efficiency of cotton separation and transportation.

[0056] The friction plate 41 vertically divides the interior of the dust removal box 40 into a cotton passage area and an impurity drop storage area. A first observation window 42 and a second observation window 43 are located on one side of the dust removal box 40. The first observation window 42 faces the cotton passage area, while the second observation window 43 faces the impurity drop storage area. The first and second observation windows 42, 43 allow for the timely observation of the passage and separation of cotton and impurities within the areas above and below the friction plate 41, facilitating operator adjustments to the positive pressure airflow and the horizontal angles of the cotton deflector 46 and impurity deflector 47.

[0057] A movable gate 44 is provided at the bottom of the debris removal box 40 , and the operator can release the impurities in the debris removal box 40 by opening the movable gate 44 , so as to facilitate timely cleaning.

[0058] Example 2

[0059] The specific steps for using this device are as follows:

[0060] S1; the operator starts the heavy material separator 10 connected to the cotton conveying pipe 30 to remove impurities from the cotton and process it into flocs.

[0061] S2; the operator starts the fan 20 installed on the cotton conveying duct 30. The fan 20 applies positive pressure airflow in the cotton conveying duct 30 to transport the flocculent cotton along the inner portion of the cotton conveying duct 30 toward the direction of the dual-axial flow impurity remover 50.

[0062] S3; The cotton in the cotton conveying pipe 30 is under the action of the positive pressure airflow and the positive pressure principle of the pipe. The impurities in the cotton are in the lower layer of the pipe due to weight reasons during the operation of the pipe, and the impurities in the cotton are transported along the cotton conveying pipe 30 into the feed port of the impurity removal box 40.

[0063] S4; The operator adjusts the horizontal angles of the cotton guide plate 46 and the impurity guide plate 47 at the inlet of the impurity removal box 40 by moving the upper adjusting bolt 49 and / or the lower adjusting bolt 48; the clean cotton in the upper layer of cotton passes through the inlet of the impurity removal box 40 and enters the outlet of the impurity removal box 40 along the cotton guide plate 46; the cotton containing impurities in the lower layer of cotton passes through the inlet of the impurity removal box 40 and is guided to the friction plate 41 by the impurity guide plate 47.

[0064] S5; the cotton containing impurities crawls along the surface of the friction plate 41 under the action of positive pressure airflow, and the impurities in the cotton and the friction plate 41 rub and hit the surface of the friction plate 41 and eventually fall into the impurity storage area of ​​the impurity removal box 40 along the through hole between the stainless steel dust rod 411.

[0065] S6; the operator observes the cotton passing through the cotton passing zone of the impurity removal box 40 through the first observation window 42 and adjusts the horizontal angle of the cotton guide plate 46.

[0066] S7; the operator observes the impurities falling through the impurity removal box 40 through the second observation window 43 and adjusts the horizontal angle of the impurity guide plate 47.

[0067] S8; After the impurity removal process in the cotton is completed, the operator turns off the fan 20; opens the movable gate 44 at the bottom of the impurity removal box 40, and centrally processes the impurities separated from the cotton.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for removing impurities from machine-picked cotton in Xinjiang, characterized in that: include: A cotton conveying pipe (30); one end of the cotton conveying pipe (30) is connected to the heavy object separator (10), and the other end is connected to the double-axial flow impurity remover (50); A fan (20); the fan (20) is installed on the cotton conveying pipeline (30) and provides a positive pressure airflow for conveying cotton to the cotton conveying pipeline (30); An impurity removal component; the impurity removal component is installed at the connection point between the cotton conveying pipeline (30) and the double-axial flow impurity remover (50), and collects impurities in the cotton; The impurity removal assembly includes an impurity removal box (40) and a friction plate (41); the inlet of the impurity removal box (40) is communicated with the cotton conveying pipe (30), the outlet of the impurity removal box (40) is communicated with the double-axial flow impurity remover (50), and the inlet of the impurity removal box (40) is located lower than the outlet of the impurity removal box (40) in the vertical direction; the friction plate (41) is horizontally arranged in the impurity removal box (40), one end of the friction plate (41) is connected to the inlet of the impurity removal box (40), and the other end of the friction plate (41) is connected to the outlet of the impurity removal box (40), and a channel for cotton impurities to fall is provided on the friction plate (41); The channel provided on the friction plate (41) includes long strip-shaped through holes that are opened at equal intervals in the direction of travel of the cotton; Between the long strip through holes are stainless steel dust rods (411), and there are 7 stainless steel dust rods (411); The impurity removal component further includes a cotton guide plate (46); the cotton guide plate (46) is horizontally arranged at the inlet of the impurity removal box (40), one end of the cotton guide plate is hinged to the rod body of the fixed rod installed at the inlet of the impurity removal box (40), and the other end is provided with upper adjustment bolts (49) on both sides; the upper adjustment bolts (49) are installed in the arc hole (45) on the impurity removal box (40); The impurity removal assembly further includes an impurity guide plate (47) arranged below the cotton guide plate (46); the impurity guide plate (47) is horizontally arranged at the inlet of the impurity removal box (40), one end of which is hinged to the rod body of a fixed rod installed at the inlet of the impurity removal box (40), and lower adjustment bolts (48) are provided on both sides of the other end; the lower adjustment bolts (48) are installed in the arc hole (45); The friction plate (41) vertically divides the interior of the impurity removal box (40) into a cotton passing area and an impurity falling storage area; a first observation window (42) and a second observation window (43) are provided on one side of the impurity removal box (40); the first observation window (42) is opposite to the cotton passing area inside the impurity removal box (40); and the second observation window (43) is opposite to the impurity falling storage area inside the impurity removal box (40).

2. The impurity removal device for machine-picked cotton in Xinjiang according to claim 1, characterized in that: The friction plate (41) is arranged at an angle of 170 degrees in the horizontal direction.

3. The impurity removal device for machine-picked cotton in Xinjiang according to claim 2, characterized in that: The bottom of the impurity removal box (40) is provided with an openable and closable movable gate (44).

4. A method for using a Xinjiang machine-picked cotton impurity removal device, characterized in that: Using the impurity removal device for machine-picked cotton in Xinjiang as described in any one of claims 1 to 3, the specific steps of using it are as follows: S1; the operator starts the heavy material separator (10) connected to the cotton conveying pipe (30), performs preliminary impurity removal on the cotton, and processes the cotton into flocs; S2; the operator starts the fan (20) installed on the cotton conveying pipe (30), and the fan (20) applies a positive pressure airflow in the cotton conveying pipe (30), and the flocculent cotton is transported along the cotton conveying pipe (30) to the direction of the dual-axial flow impurity remover (50); S3; The cotton in the cotton conveying pipe (30) is under the action of the positive pressure airflow and the positive pressure principle of the pipe. The impurities in the cotton are located in the lower layer of the pipe due to weight during the operation of the pipe, and the impurities in the cotton are transported along the cotton conveying pipe (30) along with the cotton into the feed port of the impurity removal box (40); S4; the operator adjusts the horizontal angles of the cotton guide plate (46) and the impurity guide plate (47) at the inlet of the impurity removal box (40) by moving the upper adjustment bolt (49) and / or the lower adjustment bolt (48); the clean cotton in the upper cotton layer passes through the inlet of the impurity removal box (40) and enters the outlet of the impurity removal box (40) along the cotton guide plate (46); the cotton in the lower cotton layer containing impurities passes through the inlet of the impurity removal box (40) and is guided to the friction plate (41) by the impurity guide plate (47); S5; the cotton containing impurities crawls along the surface of the friction plate (41) under the action of positive pressure airflow, and the impurities in the cotton and the friction plate (41) friction, collision and eventually fall along the through hole between the stainless steel dust rod (411) into the impurity storage area of ​​the impurity removal box (40); S6; the operator observes the cotton passing through the cotton removal box (40) through the cotton zone through the cotton guide plate (46) through the first observation window (42) to adjust the horizontal angle; S7; the operator observes the impurity separation situation of the impurity deflector (47) through the second observation window (43) and the impurities falling from the storage area of ​​the impurity removal box (40) to adjust the horizontal angle; S8; After the impurity removal process in the cotton is completed, the operator turns off the fan (20); opens the movable gate (44) at the bottom of the impurity removal box (40) to centrally process the impurities separated from the cotton.

Images