A new type of automatic roller shutter filter

Abstract

This utility model relates to the field of roller shutter filter technology, specifically to a novel automatic roller shutter filter. The technical problem it aims to solve is to overcome the defect in existing technologies where loose filter cotton affects filtration efficiency. This is mainly achieved through the following technical solution: A novel automatic roller shutter filter includes a mounting frame. A material feeding box and a material rolling box are respectively located at the top and bottom on the same side of the mounting frame. One end of the material rolling box is connected to a material rolling drive device. A ventilation window runs through the middle of the mounting frame. A guide support is provided inside the ventilation window. The guide support includes a guide roller assembly and multiple guide grooves. The two ends of the guide roller assembly are rotatably mounted inside the ventilation window. The guide grooves are located inside the ventilation window at opposite ends of the guide roller assembly. Through the cooperation of the guide roller assembly and the guide grooves, the filter cotton forms a V-shaped structure, thereby increasing the filtration area of ​​the filter cotton core and effectively tightening and supporting it, ensuring filtration effect and improving filtration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of roller shutter filter technology, specifically to a novel automatic roller shutter filter. Background Technology

[0002] Automatic roller shutter filters are air purification devices widely used in industrial, medical, and cleanroom applications. Their core feature is continuous filtration achieved through automatic filter media winding, reducing the need for manual maintenance. Roller shutter purifiers mainly consist of a filter shutter, a drive unit, and a control system. When the filter media reaches a set resistance or contamination threshold, the control system uses the drive unit to wind the filter media, replacing the clean portion with the clean one and automatically collecting or discarding the old media. The entire operation involves automatic filter media replacement, eliminating the need for frequent manual operation and significantly saving manpower. Automatic roller shutter filters also support remote monitoring and can be integrated into a central control system for centralized management. The filter media can be adjusted for different purification needs based on the environment.

[0003] Roller-type filters typically use flat filter screens, where the filtration area of ​​the filter material is the same as the size of the filter opening, resulting in a limited filtration area per pass. When the filter opening area is large, excessive spacing between the top and bottom of the filter cotton can prevent it from being fully taut. Even if the filter cotton is initially taut, it will loosen due to prolonged pressure differential during use. Therefore, to address the issue of loose and untaut filter cotton, existing roller-type air purifiers often add protective grilles to the air inlet and outlet surfaces for auxiliary support. However, this design reduces the filtration area at the filter cotton and increases overall air resistance, thus increasing the energy consumption of the ventilation fan and hindering energy conservation and emission reduction efforts. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defect of loose filter cotton affecting the filtration effect in the prior art, thereby providing a new type of automatic roller shutter filter.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A novel automatic roller shutter filter includes an installation frame. A feeding box is located on one side of the top of the installation frame, and a rolling box is located on one side of the bottom of the installation frame. A filter cotton core is connected between the feeding box and the rolling box. A rolling drive device is located at one end of the rolling box. The feeding box and the rolling box are located on the same side of the installation frame. A ventilation window is provided through the middle of the installation frame. A guide support is provided inside the ventilation window. The guide support includes a guide roller assembly and multiple guide grooves. The guide roller assembly is arranged along the width direction of the installation frame and is rotatably mounted at both ends inside the ventilation window. The guide grooves are located inside the ventilation window and at opposite ends of the guide roller assembly.

[0007] By adopting the above technical solution, the filter cotton core is stored in the feeding box and guided and wound into the winding box through the guide support. The winding and material is changed according to the usage to ensure that the subsequent winding process is tight and the winding force is appropriate. During the feeding process, the guide roller group and the guide groove cooperate to make the filter cotton form a V-shaped structure, thereby increasing the filtration area of ​​the filter cotton core and effectively tightening and supporting it, ensuring the filtration effect and improving the filtration efficiency.

[0008] Furthermore, the guide roller assembly includes an inlet guide roller assembly and an outlet guide roller assembly. The inlet guide roller assembly is installed inside the ventilation window on the side away from the feed box and the roll box, and the outlet guide roller assembly is installed inside the ventilation window on the side close to the feed box and the roll box. The inlet guide roller assembly includes multiple inlet guide rollers arranged in an array along the height direction of the ventilation window, and the outlet guide roller assembly includes multiple outlet guide rollers arranged in an array along the height direction of the ventilation window. The inlet guide rollers and outlet guide rollers are arranged alternately vertically, and guide roller bearings are installed at both ends of the inlet guide rollers and the outlet guide rollers.

[0009] By adopting the above technical solution, multiple inlet and outlet guide rollers are set to increase the winding path of the filter cotton core, making the filter cotton core present multiple V-shapes connected end to end. Compared with flat plate filters, this structure can effectively increase the filtration area and effectively reduce resistance under the same air volume, thereby reducing the energy consumption of the fan. Due to the multiple V-shaped filter cotton core structure, the airflow speed through the filter cotton core is also reduced, thereby increasing the contact time between the airflow and the filter cotton core and improving the filtration efficiency of the filter cotton core.

[0010] Furthermore, the filter cotton core is wound in an S-shape around the air inlet guide roller and the air outlet guide roller, and an inclined guide groove is provided between adjacent air inlet guide rollers and air outlet guide rollers for the filter cotton core to pass through.

[0011] By adopting the above technical solution, a guide groove is set inside the filter. On the one hand, it ensures that the filter cotton core can be smoothly wound on the inlet guide roller and the outlet guide roller, guiding its winding direction. On the other hand, the guide groove also prevents leakage on both sides of the filter cotton core, ensuring the sealing of the filter cotton core during use.

[0012] Furthermore, each of the air inlet guide rollers is provided with a U-shaped first guide groove at both ends. The first guide groove is located on the side of the air inlet guide roller away from the air outlet guide roller and its opening faces the air outlet guide roller. The first guide groove is also connected to the end of the adjacent guide groove. Each of the air outlet guide rollers is provided with a U-shaped second guide groove at both ends. The second guide groove is located on the side of the air outlet guide roller away from the air inlet guide roller and its opening faces the air inlet guide roller. The second guide groove is also connected to the end of the adjacent guide groove.

[0013] By adopting the above technical solution, the first guide groove and the second guide groove work together with the guide groove to seal the end of the filter cotton core, ensuring the airtightness of the filter cotton core during use.

[0014] Furthermore, the feeding box includes a top cover and a top box body. The top of the top cover is hinged to the top of the side of the top box body, and the top cover is located on the side of the top box body away from the mounting frame. A feeding rod is also rotatably installed inside the feeding box. A filter cotton core is sleeved on the feeding rod. A pick-and-place component is provided at one end of the feeding rod. A feeding groove is installed inside the feeding box corresponding to the other end of the feeding rod. The inner diameter of the feeding groove is equal to the diameter of the feeding rod.

[0015] By adopting the above technical solution, the material discharge groove and the pick-and-place component are used to install the material discharge rod, and the top cover and the top box are hinged to facilitate opening and closing, thereby facilitating the replacement of the filter cotton core.

[0016] Furthermore, the loading and unloading component includes a rotating column and a tightening cylinder. The rotating column is rotatably mounted inside the feeding box at one end away from the feeding groove. An engaging groove is provided on the rotating column along the axial direction. An engaging protrusion corresponding to the engaging groove extends from one end of the feeding rod near the engaging groove. The tightening cylinder is sleeved outside the rotating column and threadedly connected to the end of the feeding rod.

[0017] By adopting the above technical solution, the engaging protrusion first engages with the engaging groove, and then the tightening cylinder is controlled to be threadedly connected to the end of the feeding rod, thereby fixing the feeding rod in the feeding box.

[0018] Furthermore, a winding rod for winding the filter cotton core is rotatably installed inside the winding box. One end of the winding rod is connected to a winding drive device, which includes a drive motor, two winding wheels, a winding belt, and a magnetic powder clutch. The two winding wheels are respectively sleeved on the output shaft of the drive motor and the input shaft of the magnetic powder clutch. The output shaft of the magnetic powder clutch is connected to the winding rod and is coaxially arranged. The winding belt is sleeved on the two winding wheels to form a closed loop and drives the winding wheels and the magnetic powder clutch to move synchronously.

[0019] By adopting the above technical solution, a magnetic powder clutch is added to the roll box, which can control the winding torque and prevent the winding equipment from being damaged due to forced winding after the filter cotton core is used up, thus ensuring the safety of the roll.

[0020] Furthermore, an inlet pressure sensor and an outlet pressure sensor are installed on opposite sides of the ventilation window. An anemometer is also installed in the middle of the top of the roll box. A laser dust particle counter is also installed on the side of the ventilation window near the roll box. A length counter is also installed inside the ventilation window. The inlet pressure sensor, outlet pressure sensor, anemometer, and length counter are all connected to the drive motor signal control.

[0021] By adopting the above technical solution, corresponding air inlet pressure sensors and air outlet pressure sensors are installed on both sides of the ventilation window. Together with an anemometer and a laser dust particle counter, it is possible to monitor the filter pressure difference and air volume in real time, as well as the particulate matter concentration at the air outlet, thereby enabling timely control of the drive motor to perform the winding operation.

[0022] In summary, the technical solution of this utility model has the following advantages:

[0023] 1. The novel automatic roller shutter filter provided by this utility model has a guide roller assembly and a guide groove that make the filter cotton have a V-shaped structure, thereby increasing the filtration area of ​​the filter cotton core and effectively tightening and supporting it, ensuring the filtration effect and improving the filtration efficiency; the guide groove can also improve the sealing of the filter cotton core.

[0024] 2. The novel automatic roller shutter filter provided by this utility model has a magnetic powder clutch in the roller drive device, which can effectively adjust the torque and torque of the magnetic powder clutch, avoid damage caused by winding and ensure that the filter cotton core is in a taut state for a long time.

[0025] 3. The novel automatic roller shutter filter provided by this utility model is equipped with an inlet pressure sensor, an outlet pressure sensor and an anemometer linked together, which can detect the air resistance and the pressure difference between the inlet and outlet, and also monitor the particulate matter concentration at the outlet in real time through a laser dust particle counter. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1This is a schematic diagram of the overall structure of a novel automatic roller shutter filter provided in one embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the air inlet structure of a novel automatic roller shutter filter provided in one embodiment of the present invention;

[0029] Figure 3 This is a longitudinal sectional view of a novel automatic roller shutter filter provided in one embodiment of the present invention;

[0030] Figure 4 This is a cross-sectional view of the material feeding box provided in one embodiment of the present utility model.

[0031] Figure 5 This is a schematic diagram of the structure of the roll box and roll drive device provided in one embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Mounting frame; 2. Ventilation window; 21. Inlet pressure sensor; 22. Outlet pressure sensor; 23. Laser dust particle counter; 24. Length counter; 3. Feeding box; 31. Top cover; 32. Top box body; 321. Feeding groove; 33. Feeding rod; 331. Engaging protrusion; 34. Filter cotton core; 35. Loading / unloading component; 351. Rotating column; 3511. Engaging groove; 352. Tightening cylinder; 4. Roll box; 41. Roll rod; 42. Anemometer; 5. Roll drive device; 51. Drive motor; 52. Roll reel; 53. Roll belt; 54. Magnetic powder clutch; 6. Guide support; 7. Guide roller assembly; 71. Guide roller bearing; 72. Inlet guide roller assembly; 721. Inlet guide roller; 722. First guide groove; 73. Outlet guide roller assembly; 731. Outlet guide roller; 732. Second guide groove; 8. Guide groove. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0035] A new type of automatic roller shutter filter, such as Figure 1 and Figure 2As shown, a novel automatic roller shutter filter includes an installation frame 1. A feeding box 3 is provided on the front top side of the installation frame 1, and a rolling box 4 is provided on the front bottom side of the installation frame 1. A filter cotton core 34 is connected between the feeding box 3 and the rolling box 4. A rolling drive device 5 is provided at the right end of the rolling box 4. A ventilation window 2 is provided through the middle of the installation frame 1. A guide support 6 is provided inside the ventilation window 2. The guide support 6 includes a guide roller group 7 and multiple guide grooves 8. The guide roller groups 7 are all arranged along the width direction of the installation frame 1 and are rotatably installed in the ventilation window 2 at both ends. The guide roller groups 7 are all arranged horizontally to the left and right and their axes are parallel to each other. The guide grooves 8 are provided in the ventilation window 2 and are located at opposite ends of the guide roller groups 7. The guide grooves 8 are provided at the left and right ends of the guide rollers. The filter cotton core 34 is stored in the feeding box 3 and guided and wound into the winding box 4 through the guide support 6. The winding material is changed according to the usage to ensure that the subsequent winding process is tight and the winding force is appropriate. The guide roller group 7 and the guide groove 8 cooperate to make the filter cotton core 34 have a V-shaped structure, thereby increasing the filtration area of ​​the filter cotton core 34 and effectively tightening and supporting it to ensure the filtration effect and improve the filtration efficiency.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the guide roller group 7 includes an inlet guide roller group 72 and an outlet guide roller group 73. The inlet guide roller group 72 is installed inside the ventilation window 2 on the side away from the feed box 3 and the roll box 4. The inlet guide roller group 72 is located on the rear side of the mounting frame 1. The outlet guide roller group 73 is installed inside the ventilation window 2 on the side close to the feed box 3 and the roll box 4. The outlet guide roller group 73 is located on the front side of the mounting frame 1. The inlet guide roller group 72 includes a plurality of inlet guide rollers 721 arranged in an array along the height direction of the ventilation window 2. The outlet guide roller group 73 includes a plurality of outlet guide rollers 731 arranged in an array along the height direction of the ventilation window 2. The inlet guide rollers 721 and the outlet guide rollers 731 are arranged alternately vertically. Guide roller bearings 71 are installed at both ends of the inlet guide rollers 721 and the outlet guide rollers 731. The number of inlet guide rollers 721 is one more than the number of outlet guide rollers 731, and the initial height of the inlet guide rollers 721 is higher than the height of the outlet guide rollers 731. The addition of multiple inlet guide rollers 721 and outlet guide rollers 731 increases the winding path of the filter cotton core 34, making the filter cotton core 34 present multiple V-shapes connected end to end. Compared with a flat plate filter, this structure can effectively increase the filtration area and effectively reduce resistance under the same air volume, thereby reducing the energy consumption of the fan. Due to the structure of multiple V-shaped filter cotton cores 34, the speed of airflow passing through the filter cotton core 34 is also reduced, thereby increasing the contact time between the airflow and the filter cotton core 34 and improving the filtration efficiency of the filter cotton core 34.

[0037] Such as 2 and Figure 3As shown, the filter cotton core 34 is wound in an S-shape around the air inlet guide roller 721 and the air outlet guide roller 731. An inclined guide groove 8 is also provided between adjacent air inlet guide rollers 721 and air outlet guide rollers 731. The guide groove 8 guides the winding direction of the filter cotton core 34, ensuring that the filter cotton core 34 can be smoothly wound around the air inlet guide roller 721 and the air outlet guide roller 731. The guide groove 8 allows the filter cotton core 34 to pass through. The final shape of the guide groove 8 is also similar to a V-shape with the opening facing the right. The guide groove 8 also prevents leakage on both sides of the filter cotton core 34, ensuring the airtightness of the filter cotton core 34 during use.

[0038] Each air inlet guide roller 721 has a U-shaped first guide groove 722 at both ends. The first guide groove 722 is located on the side of the air inlet guide roller 721 away from the air outlet guide roller 731 and its opening faces the air outlet guide roller 731. The first guide groove 722 also communicates with the end of the adjacent guide groove 8. Each air outlet guide roller 731 has a U-shaped second guide groove 732 at both ends. The second guide groove 732 is located on the side of the air outlet guide roller 731 away from the air inlet guide roller 721 and its opening faces the air inlet guide roller 721. The second guide groove 732 also communicates with the end of the adjacent guide groove 8. The first guide groove 722 and the second guide groove 732, together with the guide groove 8, seal the end of the filter cotton core 34, ensuring the airtightness of the filter cotton core 34 during use.

[0039] like Figure 1 and Figure 4 As shown, the feeding box 3 includes a top cover 31 and a top box body 32. The top of the top cover 31 is hinged to the top side of the top box body 32, and the top cover 31 is located on the side of the top box body 32 away from the mounting frame 1. The hinge between the top cover 31 and the top box body 32 facilitates opening and closing, thereby facilitating the replacement of the filter cotton core 34. A feeding rod 33 is also rotatably installed inside the feeding box 3. The filter cotton core 34 is sleeved on the feeding rod 33. A pick-and-place component 35 is provided at the left end of the feeding rod 33. A feeding groove 321 is installed inside the feeding box 3 corresponding to the other end of the feeding rod 33, i.e., the right end of the feeding rod 33. The inner diameter of the feeding groove 321 is equal to the diameter of the feeding rod 33. The pick-and-place component 35 includes a rotating column 351 and a tightening cylinder 352. The rotating column 351 is rotatably mounted inside the discharge box 3 at one end away from the discharge groove 321. The rotating column 351 is coaxially arranged with the discharge rod 33. An engaging groove 3511 is formed on the rotating column 351 along the axial direction. The engaging groove 3511 is located close to the discharge rod 33. An engaging protrusion 331 corresponding to the engaging groove 3511 extends from one end of the discharge rod 33 near the engaging groove 3511. The tightening cylinder 352 is sleeved on the outside of the rotating column 351 and threadedly connected to the end of the discharge rod 33. The discharge groove 321 cooperates with the pick-and-place component 35 to install the discharge rod 33. The engaging protrusion 331 first engages with the engaging groove 3511, and then the tightening cylinder 352 is threadedly connected to the end of the discharge rod 33, thereby fixing the discharge rod 33 in place inside the discharge box 3.

[0040] like Figure 3 and Figure 5 As shown, a winding rod 41 for winding the filter cotton core 34 is rotatably mounted inside the winding box 4. One end of the winding rod 41 is connected to a winding drive device 5, which includes a drive motor 51, two winding wheels 52, a winding belt 53, and a magnetic powder clutch 54. The two winding wheels 52 are respectively sleeved on the output shaft of the drive motor 51 and the input shaft of the magnetic powder clutch 54. The output shaft of the magnetic powder clutch 54 is connected to the winding rod 41 and is coaxially arranged. The winding belt 53 is sleeved on the two winding wheels 52 to form a closed loop and drive the winding wheels 52 and the magnetic powder clutch 54 to move synchronously. The torque of the magnetic powder clutch 54 is adjustable, which can adjust the tension of the filter cotton core 34 during use to prevent the filter core from becoming loose and affecting filtration.

[0041] Because the filter cotton core 34 passes through the guide roller group 7 and the distance between the air inlet guide roller 721 and the air outlet guide roller 731 is too close, the overall stroke is relatively short. Therefore, the torque is adjusted by the magnetic powder clutch 54 to cooperate with the drive motor 51 to rotate at low speed to avoid excessive tension.

[0042] The filter cotton core 34 in the top unwinding box has a limited capacity. After a certain period of use, the material may be depleted. If the drive motor 51 is not turned to rewind at this time, the filter may be damaged. Therefore, a magnetic powder clutch 54 is added and the maximum torque is set to ensure that the rewinding force is within a suitable range and to avoid damage to the filter due to excessive rewinding force.

[0043] like Figure 2 , Figure 3 and Figure 5 As shown, an inlet pressure sensor 21 and an outlet pressure sensor 22 are installed on opposite sides of the ventilation window 2. The inlet pressure sensor 21 is located at the rear of the mounting frame 1, and the outlet pressure sensor 22 is located at the front of the mounting frame 1. An anemometer 42 is also installed in the middle of the top of the roll box 4. A laser dust particle counter 23 is also installed on the side of the ventilation window 2 near the roll box 4. The inlet pressure sensor 21, the outlet pressure sensor 22, the anemometer 42, and the length counter 24 are all connected to the drive motor 51 for signal control. The inlet pressure sensor 21, the outlet pressure sensor 22, and the anemometer 42 can monitor the filter resistance and air velocity in real time. At the same time, the laser dust particle counter 23 at the outlet detects the particulate matter concentration at the outlet. According to the filtration requirements, when the pressure difference is greater than the set value under a certain air volume, the drive motor 51 automatically rewinds the filter cotton core 34 to complete the replacement. The linkage between the sensor and the drive motor 51 is achieved through a built-in algorithm or an external central control system. By coordinating multiple sensors, the working status of the filter can be better monitored, and the filter cotton core 34 can be replaced in a timely manner.

[0044] A length counter 24 is also installed near the bottom inside the ventilation window 2. Compared with the previous flat-type overwound filter, which replaced the filter cotton core 34 by setting the number of winding turns each time, this application additionally installs a length counter 24, which can accurately measure the length of the filter cotton core 34 each time it is replaced. This results in higher accuracy when replacing the filter cotton core 34, avoiding waste or incomplete replacement. It also effectively avoids problems such as excessive winding waste or insufficient winding caused by different thicknesses of the filter cotton core 34 and different winding turns.

[0045] The working principle and usage of this novel automatic roller shutter filter are as follows: The filter cotton core 34 is wound and sleeved on the feeding rod 33, and one end of the feeding rod 33 is inserted into the feeding groove 321, while the other end is fixedly installed by the pick-and-place component 35. Then, the filter cotton core 34 passes sequentially through the air inlet guide roller 721, the air outlet guide roller 731, and the guide groove 8, and is finally wound up on the rolling rod 41. An air inlet pressure sensor 21, an air outlet pressure sensor 22, a laser dust particle counter 23, a length counter 24, and an anemometer 42, which are linked to the drive motor 51, are installed on the filter to realize automatic winding and core replacement of the filter according to subsequent use.

[0046] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A novel automatic roller shutter filter, characterized in that, The system includes an installation frame (1), a feeding box (3) on one side of the top of the installation frame (1), a rolling box (4) on one side of the bottom of the installation frame (1), a filter cotton core (34) connected between the feeding box (3) and the rolling box (4), a rolling drive device (5) on one end of the rolling box (4), the feeding box (3) and the rolling box (4) being located on the same side of the installation frame (1), a ventilation window (2) being opened through the middle of the installation frame (1), a guide support (6) being provided in the ventilation window (2), the guide support (6) including a guide roller group (7) and multiple guide grooves (8), the guide roller group (7) being arranged along the width direction of the installation frame (1) and rotatably installed in the ventilation window (2) at both ends, and the guide grooves (8) being arranged in the ventilation window (2) and located at opposite ends of the guide roller group (7).

2. The novel automatic roller shutter filter according to claim 1, characterized in that, The guide roller assembly (7) includes an inlet guide roller assembly (72) and an outlet guide roller assembly (73). The inlet guide roller assembly (72) is installed inside the ventilation window (2) on the side away from the feed box (3) and the roll box (4). The outlet guide roller assembly (73) is installed inside the ventilation window (2) on the side close to the feed box (3) and the roll box (4). The inlet guide roller assembly (72) includes a plurality of inlet guide rollers (721) arranged in an array along the height direction of the ventilation window (2). The outlet guide roller assembly (73) includes a plurality of outlet guide rollers (731) arranged in an array along the height direction of the ventilation window (2). The inlet guide rollers (721) and the outlet guide rollers (731) are arranged alternately vertically. Guide roller bearings (71) are installed at both ends of the inlet guide rollers (721) and the outlet guide rollers (731).

3. A novel automatic roller shutter filter according to claim 2, characterized in that, The filter cotton core (34) is wound in an S-shape on the air inlet guide roller (721) and the air outlet guide roller (731). An inclined guide groove (8) is also provided between adjacent air inlet guide rollers (721) and air outlet guide rollers (731) for the filter cotton core (34) to pass through.

4. A novel automatic roller shutter filter according to claim 3, characterized in that, Each of the air inlet guide rollers (721) is provided with a U-shaped first guide groove (722) at both ends. The first guide groove (722) is located on the side of the air inlet guide roller (721) away from the air outlet guide roller (731) and its opening faces the air outlet guide roller (731). The first guide groove (722) is also connected to the end of the adjacent guide groove (8). Each of the air outlet guide rollers (731) is provided with a U-shaped second guide groove (732) at both ends. The second guide groove (732) is located on the side of the air outlet guide roller (731) away from the air inlet guide roller (721) and its opening faces the air inlet guide roller (721). The second guide groove (732) is also connected to the end of the adjacent guide groove (8).

5. A novel automatic roller shutter filter according to claim 1, characterized in that, The feeding box (3) includes a top cover (31) and a top box body (32). The top of the top cover (31) is hinged to the top of the side of the top box body (32), and the top cover (31) is located on the side of the top box body (32) away from the mounting frame (1). A feeding rod (33) is also rotatably installed inside the feeding box (3). A filter cotton core (34) is sleeved on the feeding rod (33). A pick-and-place component (35) is provided at one end of the feeding rod (33). A feeding groove (321) is installed inside the feeding box (3) corresponding to the other end of the feeding rod (33). The inner diameter of the feeding groove (321) is equal to the diameter of the feeding rod (33).

6. A novel automatic roller shutter filter according to claim 5, characterized in that, The loading and unloading component (35) includes a rotating column (351) and a tightening cylinder (352). The rotating column (351) is rotatably mounted in the unloading box (3) at one end away from the unloading groove (321). The rotating column (351) has an axially opening engagement groove (3511). The unloading rod (33) has an engagement protrusion (331) corresponding to the engagement groove (3511) extending from one end near the engagement groove (3511). The tightening cylinder (352) is sleeved outside the rotating column (351) and threadedly connected to the end of the unloading rod (33).

7. A novel automatic roller shutter filter according to claim 6, characterized in that, The winding box (4) is rotatably mounted with a winding rod (41) for winding the filter cotton core (34). One end of the winding rod (41) is connected to a winding drive device (5). The winding drive device (5) includes a drive motor (51), two winding wheels (52), a winding belt (53), and a magnetic powder clutch (54). The two winding wheels (52) are respectively sleeved on the output shaft of the drive motor (51) and the input shaft of the magnetic powder clutch (54). The output shaft of the magnetic powder clutch (54) is connected to the winding rod (41) and is coaxially arranged. The winding belt (53) is sleeved on the two winding wheels (52) to form a closed loop and drive the winding wheels (52) and the magnetic powder clutch (54) to move synchronously.

8. A novel automatic roller shutter filter according to claim 7, characterized in that, An inlet pressure sensor (21) and an outlet pressure sensor (22) are installed on opposite sides of the ventilation window (2). An anemometer (42) is also installed in the middle of the top of the roll box (4). A laser dust particle counter (23) is also installed on the side of the ventilation window (2) near the roll box (4). A length counter (24) is also installed inside the ventilation window (2). The inlet pressure sensor (21), the outlet pressure sensor (22), the anemometer (42), and the length counter (24) are all connected to the drive motor (51) for signal control.

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