Self-cleaning floc-removing ventilating window and control method

Abstract

The invention relates to a self-cleaning wadding-removing ventilating window and a control method, the ventilating window comprises an upper frame body and a lower frame body, an upper winding roller is arranged in the upper frame body, a lower winding roller is arranged in the lower frame body, and a flexible filter screen is connected between the upper winding roller and the lower winding roller; the driving device is used for driving the upper winding roller and the lower winding roller to reversely and synchronously rotate; the cleaning brush is arranged in the lower frame body and located on one side of the lower winding roller, and a brush head of the cleaning brush is attached to the roller face of the lower winding roller. The reset scraping brush is arranged on the other side, opposite to the cleaning brush, of the lower winding roller, and the distance between a brush head of the reset scraping brush and the lower winding roller is larger than that between a brush head of the cleaning brush and the lower winding roller; and the collecting hopper is arranged in the lower frame body and is used for collecting the scraped floating flocks. The double winding rollers drive the flexible filtering gauze element to move circularly, the cleaning brush arranged in the lower frame body is matched to automatically scrape floating batting, the collecting hopper collects batting, the problem that batting flies again in the cleaning process of an existing brush is solved, and secondary pollution can be prevented.

Description

Technical Field

[0001] This invention relates to the field of lint removal device technology, and in particular to a self-cleaning lint removal ventilation window and its control method. Background Technology

[0002] In some local ventilation systems, during peak seasons for flying catkins, the catkins enter the ventilation system through the air valves and accumulate on the ventilation system filters, which can easily lead to high differential pressure alarms. This requires frequent isolation of the fans to replace the filters. Each time the fans are isolated, the equipment unavailable information must be recorded, which wastes manpower and resources. In addition, the frequent start-stop of the fans has an adverse effect on the reliability of the equipment. Therefore, ventilation windows need to be installed to prevent flying catkins.

[0003] An automatic poplar and willow catkin removal air inlet window, patent publication number CN111648707B, includes an air inlet window frame. The air inlet window frame is composed of an upper end plate, a catkin removal box, and left and right end plates connected together. A transmission system is installed on the air inlet window frame. An insect-proof net is installed on the air inlet window frame at the air inlet. A brush catkin removal assembly connected to the catkin removal box assembly is installed on the air inlet window frame. The catkin removal box assembly contains a catkin discharge device. This invention uses the transmission system to drive the brush catkin removal assembly up and down, and the bristles on the brush catkin removal assembly sweep the poplar and willow catkins on the insect-proof net into the catkin removal box. Although this invention can effectively clean the catkins adhering to the insect-proof net, in some cases, the catkins are quite fluffy, and the catkins can easily be scattered again during the brush cleaning process. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a self-cleaning lint-removing ventilation window and control method. The flexible filter screen is driven to move in a circular motion by double rollers, and the cleaning brush set in the lower frame automatically scrapes off the floating lint. The collection hopper collects the lint, which solves the problem of lint flying again during the existing brush cleaning process and can also prevent secondary pollution.

[0005] To solve the above-mentioned technical problems, the present invention provides a self-cleaning lint-removing ventilation window, comprising: The upper frame and the lower frame are provided with an upper roller and a lower roller, respectively, and a flexible filter screen is connected between the upper roller and the lower roller. The driving device is used to drive the upper winding roller and the lower winding roller to rotate synchronously in opposite directions, so as to realize one unwinding and one winding. A cleaning brush is installed in the lower frame on one side of the lower roller, with its brush head in contact with the roller surface of the lower roller. It is used to scrape off the surface lint of the flexible filter mesh that the lower roller is winding during rotation. A reset scraping brush is disposed on the other side of the lower winding roller relative to the cleaning brush. The distance between the brush head of the reset scraping brush and the lower winding roller is greater than the distance between the brush head of the cleaning brush and the lower winding roller. The bristle length of the reset scraping brush is less than the bristle length of the cleaning brush. It is configured to adhere to the flexible filter mesh only when the diameter of the flexible filter mesh wound on the lower winding roller reaches a certain threshold. A collection hopper, located in the lower frame, is used to collect the fallen lint.

[0006] Preferably, the driving device includes a drive motor, a drive shaft, a driven shaft, a synchronous belt, and a reversing gear set. The lower winding roller is disposed on the drive shaft, the upper winding roller is disposed on the driven shaft, the drive shaft and the driven shaft are connected by the synchronous belt, the lower winding roller is connected to the drive shaft by the reversing gear set, and the drive motor is connected to the drive shaft.

[0007] Preferably, it further includes a floating adjusting roller assembly, disposed in the upper frame and located below the upper winding roller. The floating adjusting roller assembly includes a pressure roller, a support roller, a connecting plate, a roller, a tension spring, and an arc-shaped guide groove. The support roller is rotatably connected to the middle position of the connecting plate. The pressure roller and the roller are respectively rotatably connected to both ends of the connecting plate. The upper frame is provided with the arc-shaped guide groove. The roller is slidably disposed in the arc-shaped guide groove. One end of the tension spring is connected to the roller, and the other end is connected to the upper frame. The elastic force causes the pressure roller and the support roller to press the flexible filter mesh tightly, so as to balance the difference in linear speed caused by the change in the diameter of the roll during the unwinding and winding process, and keep the flexible filter mesh in a taut state at all times.

[0008] Preferably, it further includes a positioning roller, which is disposed in the lower frame and located above the lower winding roller, for guiding and positioning the flexible filter mesh so that the flexible filter mesh enters the lower winding roller vertically.

[0009] Preferably, it further includes a side frame and a sealing brush strip. The side frame is disposed between the upper frame and the lower frame and located on both sides of the flexible filter mesh. The sealing brush strip is disposed on the side frame and contacts the side edge of the flexible filter mesh to seal the gap between the flexible filter mesh and the side frame and prevent lint from leaking from the side.

[0010] Preferably, an upper sealing plate is provided on the upper frame and a lower sealing plate is provided on the lower frame.

[0011] Preferably, a number of reinforcing ribs are fixedly connected to the flexible filter mesh.

[0012] Secondly, in order to solve the above-mentioned technical problems, the present invention provides a control method for a self-cleaning lint-removing ventilation window based on the first aspect, the control method comprising: The upper and lower rollers are driven to rotate synchronously in opposite directions, causing the flexible filter mesh to circulate between the upper and lower rollers. During the winding process of the lower roller, the cleaning brush comes into contact with the roller surface of the lower roller and scrapes the floating lint attached to the surface of the flexible filter screen into the collection hopper; After the lower winding roller has completely wound up the flexible filter mesh on the upper winding roller, the drive device reverses the direction, causing the upper winding roller to wind up and the lower winding roller to unwind, so that the flexible filter mesh moves from the lower winding roller to the upper winding roller until it returns to its initial state.

[0013] Preferably, during the process of the flexible filter screen moving from the lower roller to the upper roller, the floating lint adhering to the bottom of the flexible filter screen is scraped off by a reset scraping brush. The bristle length of the reset scraping brush is less than that of the cleaning brush, and it only adheres to the screen when the diameter of the screen wound on the lower roller reaches a certain threshold.

[0014] Preferably, during the movement of the flexible filter screen, the flexible filter screen is kept taut by a floating adjustment roller assembly. The floating adjustment roller assembly includes a pressure roller, a support roller, a connecting plate, a roller, a tension spring, and an arc-shaped guide groove. The roller slides in the arc-shaped guide groove to automatically adjust its position.

[0015] Compared with the prior art, the above-described technical solution of the present invention has the following advantages: The self-cleaning lint-removing ventilation window and control method described in this invention features a cleaning brush located inside the lower frame. This brush adheres to the surface of the lower roller to scrape away floating lint. The scraping process is completed within a closed cavity, effectively preventing lint from flying again during the cleaning process and achieving the self-cleaning function of the ventilation window. Simultaneously, it works in conjunction with a collection hopper to collect floating lint, preventing its spread. A resetting scraping brush on the other side of the lower roller complements the cleaning brush, scraping away the lint adhering to the bottom during the mesh resetting stage. This achieves comprehensive cleaning in both the winding and resetting stages, ensuring that the flexible filter mesh maintains its filtration effect during repeated use. Attached Figure Description

[0016] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the self-cleaning lint-removing ventilation window in a preferred embodiment of the present invention; Figure 2 This is a structural breakdown diagram of the self-cleaning lint-removing ventilation window in this invention; Figure 3This is a side view of the floating adjustment roller assembly in the invention when the tension spring is in the extended state. Figure 4 This is a side view of the floating adjustment roller assembly in the present invention when the tension spring is in a compressed state; Figure 5 This is an enlarged view of a portion of the drive device in this invention; Figure 6 This is a schematic diagram of the floating adjustment roller assembly in this invention; Figure 7 The winding process of the self-cleaning, lint-removing ventilation window was demonstrated; Explanation of reference numerals in the accompanying drawings: 1. Upper frame; 2. Lower frame; 3. Upper roller; 4. Lower roller; 5. Flexible filter screen; 51. Reinforcing rib; 61. Drive motor; 62. Drive shaft; 63. Driven shaft; 64. Synchronous belt; 65. Reversing gear set; 651. First gear; 652. Second gear; 66. Synchronous belt pulley assembly; 7. Cleaning brush; 8. Collection hopper; 9. Reset scraping brush; 10. Floating adjusting roller assembly; 101. Pressure roller; 102. Support roller; 103. Connecting plate; 104. Roller; 105. Tension spring; 106. Arc-shaped guide groove; 11. Positioning roller; 12. Side frame; 13. Sealing brush strip; 14. Upper sealing plate; 15. Lower sealing plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. Example 1

[0019] Reference Figure 1-4 As shown, the self-cleaning lint-removing ventilation window of the present invention includes: an upper frame 1 and a lower frame 2. An upper roller 3 is disposed in the upper frame 1, and a lower roller 4 is disposed in the lower frame 2. A flexible filter screen 5 is connected between the upper roller 3 and the lower roller 4. A driving device is used to drive the upper roller 3 and the lower roller 4 to rotate synchronously in opposite directions, achieving one unwinding and one winding. A cleaning brush 7 is disposed inside the lower frame 2 on one side of the lower roller 4, with its brush head in contact with the roller surface of the lower roller 4, used to scrape off the surface lint of the flexible filter screen 5 during the rotation of the lower roller 4. A resetting scraping brush 9 is disposed on the other side of the lower roller 4 opposite to the cleaning brush 7. Figure 3As shown in Figure 4, along the airflow direction, the cleaning brush 7 is positioned before the reset scraping brush 9. The distance between the brush head of the reset scraping brush 9 and the lower winding roller 4 is greater than the distance between the brush head of the cleaning brush 7 and the lower winding roller 4. In this embodiment, the bristle length of the reset scraping brush 9 is less than the bristle length of the cleaning brush 7. It is configured to only contact the flexible filter mesh 5 when the diameter of the flexible filter mesh 5 wound on the lower winding roller 4 reaches a certain threshold. That is, the reset scraping brush 9 only contacts the flexible filter mesh 5 during the reset phase of the flexible filter mesh 5, effectively scraping away the floating lint adhering to the bottom of the flexible filter mesh 5 and preventing the floating lint from being carried back to the upper winding roller 3 with the flexible filter mesh 5. Specifically, the reset scraping brush 9 only contacts the surface of the flexible filter mesh 5 when all the exposed filter parts of the flexible filter mesh 5 are wound up by the lower winding roller 4. In this way, during the reset process, the floating lint clumps accumulated in front of the cleaning brush 7 will not continue to adhere to the surface of the flexible filter mesh 5 and will be carried away by it. A collecting hopper 8 is disposed in the lower frame 2 to collect fallen lint. Specifically, the collecting hopper 8 is slidably disposed in the lower frame 2, and can be pulled and slid out of the lower frame 2 for easy periodic cleaning of the lint.

[0020] like Figure 5 As shown, the drive device includes a drive motor 61, a drive shaft 62, a driven shaft 63, a synchronous belt 64, and a reversing gear set 65. The lower winding roller 4 is mounted on the drive shaft 62, and the upper winding roller 3 is mounted on the driven shaft 63. The drive shaft 62 and the driven shaft 63 are connected by the synchronous belt 64. The lower winding roller 4 is connected to the drive shaft 62 by the reversing gear set 65. The drive motor 61 is connected to the drive shaft 62. By adopting a combined transmission structure of the synchronous belt 64 and the reversing gear set 65, the upper winding roller 3 and the lower winding roller 4 can be driven by a single motor to rotate synchronously in opposite directions. The structure is simple and compact, with high transmission accuracy, reducing manufacturing costs and energy consumption.

[0021] Specifically, the output shaft of the drive motor 61 is connected to the drive shaft 62 via a synchronous belt pulley assembly 66; the reversing gear set 65 includes a first gear 651 and a second gear 652, the first gear 651 is connected to the drive shaft 62, the second gear 652 meshes with the first gear 651, and the lower roller 4 is coaxially arranged with the second gear 652.

[0022] like Figure 6As shown, it also includes a floating adjustment roller assembly 10, which is disposed in the upper frame 1 and located below the upper winding roller 3. The floating adjustment roller assembly 10 includes a pressure roller 101, a support roller 102, a connecting plate 103, a roller 104, a tension spring 105, and an arc-shaped guide groove 106. The support roller 102 is rotatably connected to the middle position of the connecting plate 103. The pressure roller 101 and the roller 104 are respectively rotatably connected to the two ends of the connecting plate 103. The upper frame 1 is provided with the arc-shaped guide groove 106. The roller 104 is slidably disposed in the arc-shaped guide groove 106. One end of the tension spring 105 is connected to the roller 104, and the other end is connected to the upper frame 1. The elastic force causes the pressure roller 101 and the support roller 102 to press the flexible filter mesh 5, so as to balance the difference in linear speed caused by the change in the diameter of the roll during the unwinding and winding process, and keep the flexible filter mesh 5 in a taut state at all times.

[0023] Specifically, such as Figure 3 As shown in Figure 4, the flexible filter screen 5 first winds in from below the pressure roller 101 and then winds out from above the support roller 102. That is, the flexible filter screen 5 is wound in an S-shape on the pressure roller 101 and the support roller 102. The floating adjustment roller assembly 10 automatically compensates for the difference in linear speed caused by the change in roll diameter through the cooperation of the roller 104 and the arc-shaped guide groove 106, ensuring that the flexible filter screen 5 is taut and not loose throughout the process, preventing the flexible filter screen 5 from wrinkling or deviating, and ensuring the filtration effect and transmission stability.

[0024] Additionally, it includes a side frame 12 and a sealing brush strip 13. The side frame 12 is disposed between the upper frame 1 and the lower frame 2 and located on both sides of the flexible filter mesh 5. The sealing brush strip 13 is disposed on the side frame 12 and contacts the side edge of the flexible filter mesh 5, used to seal the gap between the flexible filter mesh 5 and the side frame 12, preventing lint from leaking from the side. The side frame 12 and the sealing brush strip 13 form a dynamic sealing structure, which effectively blocks the side leakage channel while allowing the flexible filter mesh 5 to move, preventing lint from bypassing the flexible filter mesh 5 and entering the ventilation system, thus improving filtration reliability.

[0025] Furthermore, it also includes a positioning roller 11, which is disposed in the lower frame 2 and located above the lower winding roller 4, for guiding and positioning the flexible filter mesh 5 so that the flexible filter mesh 5 enters the lower frame 2 vertically. Correspondingly, as... Figure 3As shown in Figure 4, the positioning roller 11 and the support roller 102 are located on the same vertical plane, supporting the flexible filter mesh 5 on the same side, so that the flexible filter mesh 5 is located at the center of the side frame 12. The cooperation of the positioning roller 11 and the support roller 102 can ensure that the flexible filter mesh 5 always runs vertically between the side frames 12, avoiding tilting or shifting of the flexible filter mesh 5 due to changes in the diameter of the upper and lower rollers, and ensuring the adhesion accuracy between the closed brush strips 13 on both sides and the flexible filter mesh 5.

[0026] In this embodiment, an upper sealing plate 14 is provided on the upper frame 1, and a lower sealing plate 15 is provided on the lower frame 2. The upper sealing plate 14 and the lower sealing plate 15 cooperate with the side frame 12 and the sealing brush strip 13 to form a sealed filter cavity, ensuring that the airflow containing flying fluff must pass through the flexible filter mesh 5 before entering the ventilation system. The floating fluff scraped off by the cleaning brush 7 can only fall into the collection hopper 8, preventing the fluff from flying back into the external environment during the cleaning process.

[0027] In this embodiment, a plurality of reinforcing ribs 51 are fixedly connected to the flexible filter mesh 5. The design of the reinforcing ribs 51 can improve the structural strength and deformation resistance of the flexible filter mesh 5, prevent the flexible filter mesh 5 from elongating and deforming under tension, extend the service life of the flexible filter mesh 5, and ensure long-term filtration accuracy. Example 2

[0028] This invention discloses a control method based on the self-cleaning lint-removing ventilation window described in Embodiment 1. The control method includes: The upper winding roller 3 and the lower winding roller 4 are driven to rotate synchronously in opposite directions, so that the flexible filter screen 5 moves cyclically between the upper winding roller 3 and the lower winding roller 4; During the winding process of the lower roller 4, the cleaning brush 7 is in contact with the roller surface of the lower roller 4, scraping the floating lint attached to the surface of the flexible filter screen 5 into the collection hopper 8; After the lower roller 4 has completely wound up the flexible filter mesh on the upper roller 3, the drive device reverses the direction, the upper roller 3 winds up, and the lower roller 4 unwinds, so that the flexible filter mesh 5 moves from the lower roller 4 to the upper roller 3 until it returns to its initial state.

[0029] As the flexible filter screen 5 moves from the lower roller 4 to the upper roller 3, the floating lint adhering to the bottom of the flexible filter screen 5 is scraped off by the reset scraping brush 9. During the reset stage, the reset scraping brush 9 is used for secondary cleaning to thoroughly remove stubborn floating lint, prevent residual floating lint from contaminating the cleaned filter surface, and ensure the filtration effect of the flexible filter screen 5 for repeated use.

[0030] During the movement of the flexible filter mesh 5, the floating adjusting roller assembly 10 keeps the flexible filter mesh 5 taut, and the roller 104 slides within the arc-shaped guide groove 106 to automatically adjust its position. The floating adjusting roller assembly 10 adaptively adjusts in real time, maintaining the tension of the flexible filter mesh 5 without additional control commands, thus improving response speed and stability.

[0031] Figure 7 The diagram illustrates the cyclic operation of the upper roller 3 and lower roller 4 of the self-cleaning lint-removing ventilation window. The illustration shows the six stages of the cyclic process from left to right: First stage (initial state): The upper winding roller 3 has all the flexible filter mesh 5 wound on it, and the lower winding roller 4 is in an empty state; the upper winding roller 3 rotates counterclockwise to unwind, and the lower winding roller 4 rotates clockwise to wind up.

[0032] Second stage: The upper roller 3 continues to unwind, and the lower roller 4 continues to wind up. The flexible filter mesh 5 gradually transfers from the upper roller 3 to the lower roller 4, and the diameters of the two rollers tend to be equal.

[0033] Third stage: After all the flexible filter mesh 5 on the upper roller 3 has been unwound, the lower roller 4 rewinds all the flexible filter mesh 5.

[0034] Fourth stage: Drive motor 61 reverses direction, upper winding roller 3 rotates counterclockwise for winding, lower winding roller 4 rotates clockwise for unwinding, and enters the reset stage.

[0035] Fifth stage: The lower roller 4 continues to unwind, the upper roller 3 continues to wind up, and the flexible filter mesh 5 gradually transfers from the lower roller 4 to the upper roller 3, and the diameters of the two rollers tend to be equal.

[0036] Sixth stage (restoring the initial state): All the flexible filter screen 5 on the lower roller 4 is transferred back to the upper roller 3, restoring to the initial state of stage one, completing one work cycle.

[0037] In the diagram, the arrows indicate the rotation direction of each roller. The upper arrow indicates the rotation direction of the upper roller 3, and the lower arrow indicates the rotation direction of the lower roller 4. The upper roller 3 and the lower roller 4 always rotate in opposite directions to achieve one unwinding and one rewinding.

[0038] The above control method completes the full renewal and cleaning of the filter surface of the flexible filter screen 5 by reciprocating control of the upper roller 3 and the lower roller 4. The control is simple and reliable.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A self-cleaning, lint-removing ventilation window, characterized in that, include: The upper frame and the lower frame are provided with an upper roller and a lower roller, respectively. A flexible filter screen is connected between the upper roller and the lower roller. The driving device is used to drive the upper winding roller and the lower winding roller to rotate synchronously in opposite directions, so as to realize one unwinding and one winding. A cleaning brush is set inside the lower frame and located on one side of the lower winding roller. Its brush head is attached to the roller surface of the lower winding roller and is used to scrape off the surface lint of the flexible filter mesh that it is winding during the rotation of the lower winding roller. A reset scraping brush is disposed on the other side of the lower winding roller relative to the cleaning brush. The distance between the brush head of the reset scraping brush and the lower winding roller is greater than the distance between the brush head of the cleaning brush and the lower winding roller. The reset scraping brush is configured to adhere to the flexible filter mesh only when the diameter of the flexible filter mesh wound on the lower winding roller reaches a certain threshold. A collection hopper, located in the lower frame, is used to collect the fallen lint.

2. The self-cleaning, lint-removing ventilation window according to claim 1, characterized in that, The driving device includes a drive motor, a drive shaft, a driven shaft, a synchronous belt, and a reversing gear set. The lower winding roller is disposed on the drive shaft, and the upper winding roller is disposed on the driven shaft. The drive shaft and the driven shaft are connected by the synchronous belt. The lower winding roller is connected to the drive shaft by the reversing gear set. The drive motor is connected to the drive shaft.

3. The self-cleaning, lint-removing ventilation window according to claim 1, characterized in that, It also includes a floating adjusting roller assembly, which is disposed in the upper frame and located below the upper winding roller. The floating adjusting roller assembly includes a pressure roller, a support roller, a connecting plate, a roller, a tension spring, and an arc-shaped guide groove. The support roller is rotatably connected to the middle position of the connecting plate. The pressure roller and the roller are respectively rotatably connected to both ends of the connecting plate. The upper frame is provided with the arc-shaped guide groove. The roller is slidably disposed in the arc-shaped guide groove. One end of the tension spring is connected to the roller, and the other end is connected to the upper frame. The elastic force causes the pressure roller and the support roller to press the flexible filter mesh tightly, so as to balance the difference in linear speed caused by the change in the diameter of the roll during the unwinding and winding process, and keep the flexible filter mesh in a taut state at all times.

4. The self-cleaning, lint-removing ventilation window according to claim 1, characterized in that, It also includes a positioning roller, which is disposed in the lower frame and located above the lower winding roller, for guiding and positioning the flexible filter mesh so that the flexible filter mesh enters the lower winding roller vertically.

5. The self-cleaning, lint-removing ventilation window according to claim 1, characterized in that, It also includes a side frame and a sealing brush strip. The side frame is disposed between the upper frame and the lower frame and located on both sides of the flexible filter mesh. The sealing brush strip is disposed on the side frame and contacts the side of the flexible filter mesh to seal the gap between the flexible filter mesh and the side frame and prevent lint from leaking from the side.

6. The self-cleaning, lint-removing ventilation window according to claim 1, characterized in that, An upper sealing plate is provided on the upper frame, and a lower sealing plate is provided on the lower frame.

7. The self-cleaning, lint-removing ventilation window according to claim 1, characterized in that, Several reinforcing ribs are fixedly connected to the flexible filter mesh.

8. A control method for a self-cleaning, lint-removing ventilation window according to any one of claims 1-7, characterized in that: The control method includes: The upper and lower rollers are driven to rotate synchronously in opposite directions, causing the flexible filter mesh to circulate between the upper and lower rollers. During the winding process of the lower roll, the cleaning brush comes into contact with the surface of the lower roll and scrapes the floating lint attached to the surface of the flexible filter screen into the collection hopper; After the lower winding roller has completely wound up the flexible filter mesh on the upper winding roller, the drive device reverses the direction, causing the upper winding roller to wind up and the lower winding roller to unwind, so that the flexible filter mesh moves from the lower winding roller to the upper winding roller until it returns to its initial state.

9. The control method according to claim 8, characterized in that, During the process of the flexible filter screen moving from the lower roller to the upper roller, the floating lint adhering to the bottom of the flexible filter screen is scraped off by the reset scraping brush. The bristle length of the reset scraping brush is less than that of the cleaning brush, and it only adheres to the screen when the diameter of the screen wound on the lower roller reaches a certain threshold.

10. The control method according to claim 9, characterized in that, During the movement of the flexible filter screen, the flexible filter screen is kept taut by a floating adjustment roller assembly. The floating adjustment roller assembly includes a pressure roller, a support roller, a connecting plate, a roller, a tension spring, and an arc-shaped guide groove. The roller slides in the arc-shaped guide groove to automatically adjust its position.

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