CN220101117U - Dustproof shutter - Google Patents

Abstract

The utility model discloses a dustproof shutter, which belongs to the technical field of shutter dust prevention and comprises a frame, a plurality of driving ropes and a plurality of blades, wherein a storage groove is formed in the frame, a filter screen is detachably connected to the inner wall of the storage groove, and a fixing assembly for fixing the filter screen is arranged in the storage groove. The utility model has the effect of keeping indoor clean, thereby reducing the cleaning time and frequency of people and reducing the living burden of people.

Description

Dustproof shutter

Technical Field

The utility model relates to the technical field of shutter dust prevention, in particular to a dust-proof shutter.

Background

The shutter is a style of window, is a common component, and has the characteristics of beautiful appearance, energy conservation, simplicity, good falling, privacy protection and the like.

The existing shutter comprises a frame and a plurality of parallel blades arranged on the frame, the blades are rotationally connected to the side wall of the frame, a plurality of driving ropes are arranged in the frame, the driving ropes are fixedly sleeved on the plurality of parallel blades, and a person controls the shutter to open or close by pulling the ropes.

But when opening the shutter, outdoor dust, mosquito etc. can get into indoor through the opening to increase people and to indoor clear frequency and degree, and then increased people's time and frequency of cleaning, increased people's living burden.

Disclosure of Invention

In order to keep indoor cleanliness, the cleaning time and frequency of people are reduced, and the living burden of people is lightened; the utility model provides a dustproof shutter.

The utility model provides a dustproof shutter which adopts the following technical scheme:

the utility model provides a dustproof shutter includes frame, a plurality of driving rope and a plurality of blade, the storage tank has been seted up in the frame, can dismantle on the storage tank inner wall and be connected with the filter screen, be provided with in the storage tank and right the fixed subassembly that the filter screen was fixed.

By adopting the technical scheme, when the shutter is opened, the filter screen can effectively reduce the entry of dust, mosquitoes and the like, so that the indoor cleanness is maintained, and the indoor cleaning frequency of people is reduced; when the filter screen is reduced in quality due to long-term use, people dismount the filter screen by removing the fixing component, reinstallate a new filter screen and fix the filter screen through the fixing component, so that people can conveniently replace the filter screen, and the filtering effect of the filter screen is maintained.

Preferably, the fixing component comprises a clamping frame, a first screw rod and a first guide rod; the first screw rod is rotationally connected to the inner wall of the storage groove, the first guide rod is fixedly connected to the inner wall of the storage groove, the clamping frame is in threaded connection with the first screw rod, and the clamping frame is in sliding connection with the first guide rod; the clamping frame is abutted against the filter screen.

By adopting the technical scheme, before the filter screen is installed, people twist the first screw rod to rotate, and the clamping frame moves away from the inner wall of the storage groove along with the rotation of the first screw rod under the action of the first guide rod; then, people install the filter screen on the storage tank inner wall, then, people reverse twist and move first lead screw reverse rotation, and first lead screw reverse rotation drive clamping frame is close to the filter screen and removes, and the clamping frame supports tightly the filter screen to reduce the possibility that the filter screen takes place to drop.

Preferably, the inner wall of the storage groove is provided with a storage groove, a cleaning plate and fan blades slide in the storage groove, and the fan blades are rotationally connected with the cleaning plate; the cleaning plate is fixedly provided with a cleaning brush which is connected with the filter screen in a sliding manner; the cleaning device is characterized in that a driving component for driving the cleaning brush to move is arranged in the placing groove, and a rotating component for driving the fan blades to rotate is arranged on the cleaning plate.

By adopting the technical scheme, before the shutter is opened, people drive the cleaning plate to move with the cleaning brush through the driving assembly, and the cleaning brush is propped against the surface of the filter screen to slide, so that dust accumulated on the surface of the filter screen can be cleaned, the filter screen can be reduced from being blocked, and the indoor and outdoor air flow is influenced; meanwhile, the rotating assembly on the cleaning plate drives the fan blades to rotate, and the fan blades can blow off dust floating on the surface of the filter screen and brushed off by the cleaning brush from the louver, so that the brushed dust is reduced to fall onto the filter screen again, and the cleaning effect of the filter screen is further improved.

Preferably, the driving assembly comprises a second screw rod, a second guide rod and a motor; the motor is fixedly arranged on the inner wall of the placement groove, one end of the second screw rod is fixedly connected with the rotating shaft of the motor, the other end of the second screw rod is rotatably connected with the inner wall of the placement groove, and two ends of the second guide rod are respectively and fixedly connected with the opposite inner wall of the placement groove; the cleaning plate is in threaded connection with the second screw rod, and the cleaning brush is in sliding connection with the guide rod.

By adopting the technical scheme, before the cleaning plate is started, the cleaning plate and the cleaning brush are positioned in the placing groove; the motor can be opened by remote control, the motor rotates to drive the second screw rod to rotate, the cleaning plate moves along with the rotation of the second screw rod under the guiding action of the second guide rod, and the cleaning plate moves to drive the cleaning brush to slide on the surface of the filter screen.

Preferably, the rotating assembly comprises a rotating rod, a first gear and a crown gear; the crown gear is rotationally connected with the cleaning plate and sleeved on the second screw rod; the side wall of the second screw rod is provided with a rotating groove, the inner wall of the crown gear is provided with a connecting block, and the connecting block is connected to the inner wall of the rotating groove in a sliding way;

the cleaning plate is fixedly provided with a fixed block, the rotating rod is arranged in a penetrating mode and is rotatably connected with the fixed block, the fan blade is fixedly sleeved at one end of the rotating rod, and the first gear is fixedly sleeved at the other end of the rotating rod; the first gear is meshed with the crown gear.

Through adopting above-mentioned technical scheme, when the second lead screw rotates, the connecting block rotates along with the rotation groove, consequently, the crown gear rotates along with the second lead screw, and the crown gear rotates and drives first gear rotation, and first gear rotation drives the flabellum and rotates.

Preferably, the opposite ends of the frame are respectively provided with a first rotating shaft and a second rotating shaft in a rotating way, and the driving rope is wound on the first rotating shaft and the second rotating shaft;

a plurality of clamping holes are formed in the peripheral side walls of the first rotating shaft and the second rotating shaft, clamping beads are fixedly sleeved on the driving rope, and the clamping beads are matched with the clamping holes; the transmission groove is provided with a transmission component for driving the second rotating shaft to rotate.

By adopting the technical scheme, under the action of the transmission assembly, the second rotating shaft rotates, and the second rotating shaft can drive the transmission rope to rotate so as to open or close the shutter; the clamping holes on the second rotating shaft are matched with the clamping beads on the driving rope, so that the sensitivity between the second rotating shaft and the driving rope is improved, and the driving rope is reduced from slipping on the peripheral side wall of the second rotating shaft.

Preferably, a transmission groove is formed in the frame, and the transmission assembly comprises a second gear, a rack and a push rod; the rack slides in the transmission groove, the push rod is fixedly connected with the rack, the push rod penetrates through the inner wall of the transmission groove, the push rod slides in the placement groove, the cleaning plate is fixedly connected with a pressing block, and the pressing block is abutted to the push rod; the second gear is fixedly sleeved on the second rotating shaft, and the second gear is meshed with the rack.

By adopting the technical scheme, when people want to open the shutter, the people can start the motor through remote control, and the motor drives the cleaning brush to clean the filter screen once; and after the cleaning brush is cleaned, the cleaning plate can be contacted with the push rod in the process of moving into the placing groove, the push rod is pushed to move by the movement of the cleaning plate, the rack is driven to move by the movement of the push rod, the second gear is driven to rotate by the movement of the rack, and the second rotating shaft is driven to rotate by the rotation of the second gear, so that the shutter is opened.

Preferably, a reset block and a reset spring are arranged in the transmission groove, the reset block is fixedly connected to the side wall of the rack, one end of the reset spring is fixedly connected to the reset block, and the other end of the reset spring is fixedly connected to the inner wall of the transmission groove.

By adopting the technical scheme, when the push rod pushes the rack downwards to move, the rack moves to drive the reset block to compress the reset spring to move; when people need to close the shutter, people reverse through remote control of the motor, the motor drives the cleaning plate to be far away from the push rod in a reverse way, and the reset block pushes the rack to move reversely under the action of the elastic force of the reset spring until the reset spring is in a natural state; in the process, the rack moves to drive the second gear to rotate reversely, so that the second rotating shaft drives the driving rope to close the shutter.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. when the shutter is opened, the filter screen can effectively reduce the entry of dust, mosquitoes and the like, so that the indoor cleanness is maintained, and the indoor cleaning frequency of people is reduced; when the quality of the filter screen is reduced due to long-term use, people dismount the filter screen by removing the fixing component, reinstall a new filter screen and fix the filter screen by the fixing component, so that the filter screen is convenient to replace by people, and the filtering effect of the filter screen is maintained;

2. before the filter screen is installed, people twist the first screw rod to rotate, and the clamping frame moves away from the inner wall of the storage groove along with the rotation of the first screw rod under the action of the first guide rod; then, people install the filter screen on the inner wall of the storage tank, then, people reversely twist the first screw rod to reversely rotate, the first screw rod reversely rotates to drive the clamping frame to move close to the filter screen, and the clamping frame abuts against the filter screen, so that the possibility of falling off of the filter screen is reduced;

3. when the push rod pushes the rack to move downwards, the rack moves to drive the reset block to compress the reset spring to move; when people need to close the shutter, people reverse through remote control of the motor, the motor drives the cleaning plate to be far away from the push rod in a reverse way, and the reset block pushes the rack to move reversely under the action of the elastic force of the reset spring until the reset spring is in a natural state; in the process, the rack moves to drive the second gear to rotate reversely, so that the second rotating shaft drives the driving rope to close the shutter.

Drawings

Fig. 1 is a schematic view of the overall structure of a dust-proof shutter.

Fig. 2 is a schematic structural view of a protruding clamping frame according to an embodiment of the present utility model.

Fig. 3 is a schematic view showing the structure of a protruding cleaning plate in an embodiment of the present utility model.

Fig. 4 is a schematic view of a protruding push rod according to an embodiment of the present utility model.

Fig. 5 is an enlarged view at a in fig. 3.

Fig. 6 is a schematic view showing a structure of the second rotation shaft in the embodiment of the present utility model.

FIG. 7 is a schematic view of a protruding bead according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a frame; 2. a blade; 3. a driving rope; 4. a filter screen; 5. a fixing assembly; 6. a first screw rod; 7. a first guide bar; 8. briquetting; 9. a storage tank; 10. a clamping frame; 11. a placement groove; 12. a cleaning plate; 13. a cleaning brush; 14. a fan blade; 15. a drive assembly; 16. a rotating assembly; 17. a second screw rod; 18. a second guide bar; 19. a motor; 20. a rotating rod; 21. a first gear; 22. a crown gear; 23. a rotating groove; 24. a connecting block; 25. a fixed block; 26. a first rotation shaft; 27. a second rotation shaft; 28. a clamping hole; 29. clamping beads; 30. a transmission assembly; 31. a transmission groove; 32. a second gear; 33. a rack; 34. a push rod; 35. a reset block; 36. and a return spring.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-7.

The embodiment of the utility model discloses a dustproof shutter, which comprises a frame 1, a plurality of driving ropes 3 and a plurality of blades 2, wherein a storage groove 9 is formed in the frame 1 positioned on the outer side of the shutter, the storage groove 9 is a square groove, a square filter screen 4 is detachably adhered to the inner wall of the storage groove 9, the filter screen 4 is connected with the inner wall of the storage groove 9 through a magic tape, and a fixing assembly 5 for fixing the filter screen 4 is arranged in the storage groove 9.

As shown in fig. 2, the fixing assembly 5 includes a clamping frame 10, a first screw 6, and a first guide bar 7; the clamping frame 10 is a square frame, the first screw rod 6 is rotatably connected to the inner wall of the storage groove 9, and the first guide rod 7 is fixedly welded to the inner wall of the storage groove 9; the clamping frame 10 is in threaded connection with the first screw rod 6, and the clamping frame 10 is in sliding connection with the first guide rod 7; the clamping frame 10 abuts against the filter screen 4.

As shown in fig. 1 and 2, first, people twist first lead screw 6 to rotate, under first guide bar 7, first lead screw 6 rotates and drives clamping frame 10 to keep away from the inner wall of storage tank 9, at this moment, people paste filter screen 4 on the inner wall of storage tank 9 through the magic tape, then, people twist first lead screw 6 reversely to rotate, first lead screw 6 reverses and drives clamping frame 10 to move near filter screen 4, and makes clamping frame 10 abut against filter screen 4, thereby reduces the possibility that filter screen 4 takes place to drop. When the shutter is opened, the filter screen 4 can effectively reduce the entry of dust, mosquitoes and the like, so that the indoor cleanness is maintained, and the clean frequency of people is reduced.

As shown in fig. 2, after the filter screen 4 is degraded due to long-term use quality, people release the fixing of the clamping frame 10 to the filter screen 4 by twisting the first screw rod 6, tear the old filter screen 4, and glue the new filter screen 4 again, and then drive the clamping frame 10 to fix the filter screen 4 through the first screw rod 6 and the first guide rod 7.

As shown in fig. 3 and 4, the inner wall of the storage tank 9 is provided with a placement tank 11, the placement tank 11 is a U-shaped tank, a cleaning plate 12 and fan blades 14 slide in the placement tank 11, the cleaning plate 12 is in a cuboid shape, and the fan blades 14 rotate on the cleaning plate 12; a cleaning brush 13 is fixedly adhered to one side of the cleaning plate 12 close to the filter screen 4, and the cleaning brush 13 is connected with the filter screen 4 in a sliding manner; a driving component 15 for driving the cleaning brush 13 to move up and down is arranged in the placing groove 11, and a rotating component 16 for driving the fan blades 14 to rotate is arranged on the cleaning plate 12.

As shown in fig. 3 and 4, the driving assembly 15 includes a second screw 17, a second guide bar 18, and a motor 19; the motor 19 is fixedly arranged on the inner wall of the top end of the placement groove 11, the top end of the second screw rod 17 is fixedly connected with the rotating shaft of the motor 19 through a coupler, the bottom end of the second screw rod 17 is rotatably connected with the inner wall of the bottom end of the placement groove 11, and two ends of the second guide rod 18 are respectively fixedly welded on the opposite inner walls of the placement groove 11; the cleaning plate 12 is in threaded connection with a second screw rod 17, and the cleaning plate 12 is in sliding connection with a second guide rod 18.

As shown in fig. 4 and 5, the rotating assembly 16 includes a rotating lever 20, a first gear 21, and a crown gear 22; the axial lead of the crown gear 22 is consistent with the axial lead direction of the second screw rod 17, the crown gear 22 is sleeved on the second screw rod 17, and the crown gear 22 is rotationally connected to the cleaning plate 12; a rotating groove 23 is formed in the side wall of the second screw rod 17 along the vertical direction, a connecting block 24 is fixedly welded on the inner wall of the crown gear 22, and the connecting block 24 is connected to the inner wall of the rotating groove 23 along the vertical direction in a sliding manner; the upper end face of the cleaning plate 12 is fixedly welded with a fixed block 25, the rotating rod 20 is arranged in a penetrating way and is rotationally connected with the fixed block 25, the fan blades 14 are fixedly sleeved at one end of the rotating rod 20, and the first gear 21 is fixedly sleeved at the other end of the rotating rod 20; the first gear 21 is meshed with a crown gear 22.

As shown in fig. 4 and 6, the pressing block 8 slides in the placement groove 11, the pressing block 8 is in an L shape, and the pressing block 8 is fixedly welded on the side wall of the cleaning plate 12 and is integrally formed with the cleaning plate 12; the frame 1 is internally provided with a transmission groove 31, and the transmission groove 31 is communicated with the placement groove 11.

As shown in fig. 2 and 7, the upper and lower ends of the frame 1 are respectively provided with a first rotating shaft 26 and a second rotating shaft 27 in a rotating manner, the axes of the first rotating shaft 26 and the second rotating shaft 27 are respectively arranged in a horizontal direction, and the driving rope 3 is wound around the first rotating shaft 26 and the second rotating shaft 27; a plurality of clamping holes 28 are formed in the peripheral side walls of the first rotating shaft 26 and the second rotating shaft 27, clamping beads 29 are fixedly sleeved on the driving rope 3, and the clamping beads 29 are matched with the clamping holes 28; the transmission groove 31 is provided with a transmission assembly 30 that drives the second rotation shaft 27 to rotate.

As shown in fig. 4 and 6, the transmission assembly 30 includes a second gear 32, a rack 33, and a push rod 34; the rack 33 slides in the transmission groove 31, the push rod 34 slides in the placement groove 11 and the transmission groove 31 along the vertical direction, the bottom end of the push rod 34 is fixedly welded at the top end of the rack 33, the rack 33 slides in the transmission groove 31 along the vertical direction, and the lower end surface of the cleaning plate 12 is abutted against the upper end surface of the push rod 34; the second gear 32 is fixedly sleeved on the second rotating shaft 27, and the second gear 32 is meshed with the rack 33.

As shown in fig. 4, a reset block 35 and a reset spring 36 are disposed in the transmission groove 31, the reset block 35 is in a cuboid shape, the reset block 35 is fixedly welded on the side wall of the rack 33, the reset spring 36 is disposed in the vertical direction, the top end of the reset spring 36 is fixedly welded on the lower end face of the reset block 35, and the bottom end of the reset spring 36 is fixedly welded on the inner wall of the transmission groove 31.

As shown in fig. 3 and 4, before the shutter is opened, the cleaning plate 12 is positioned in the top end of the placement groove 11, and the cleaning plate 12 with the cleaning brush 13 can be hidden in the placement groove 11, so that the aesthetic influence of the cleaning plate 12 on the shutter is reduced; when people need to open the shutter, the motor 19 can be started by remote control, the motor 19 is started to drive the second screw rod 17 to rotate, the cleaning plate 12 moves downwards along with the rotation of the second screw rod 17 under the guiding action of the second guide rod 18, and the cleaning plate 12 moves downwards to drive the cleaning brush 13 to slide downwards on the surface of the filter screen 4; therefore, dust accumulated on the surface of the filter screen 4 can be cleaned, and further, the blockage of the filter screen 4 can be reduced, and the indoor and outdoor air flow is influenced.

As shown in fig. 4 and fig. 5, while the second screw rod 17 rotates, the connection block 24 rotates along with the rotation groove 23 on the second screw rod 17, the connection block 24 rotates to drive the crown gear 22 to rotate, the crown gear 22 rotates to drive the first gear 21 to rotate, the first gear 21 rotates to drive the rotating rod 20 to rotate, and the rotating rod 20 rotates to drive the fan blade 14 to rotate; the rotation of the fan blades 14 can blow off dust floating on the surface of the filter screen 4 and dust brushed off by the cleaning brush 13 from the shutter, so that the brushed dust is reduced to fall onto the filter screen 4 again, and the cleaning effect of the filter screen 4 is further improved.

As shown in fig. 4 and 6, when the cleaning plate 12 moves toward the bottom end of the placement groove 11, the pressing block can contact the pushing rod 34, and in the process that the cleaning plate 12 enters the bottom end of the placement groove 11, the pushing rod 34 is pushed to move downwards by the downward movement of the pressing block, the downward movement of the pushing rod 34 drives the downward rack 33 to move, and the downward movement of the rack 33 drives the reset block 35 to compress the reset spring 36 to move downwards; meanwhile, the rack 33 moves to drive the second gear 32 to rotate, the second gear 32 rotates to drive the second rotating shaft 27 to rotate, and the second rotating shaft rotates to drive the driving rope 3 to move under the cooperation of the clamping beads 29 and the clamping holes 28, so that the shutter is opened; at this time, the cleaning plate 12 is hidden at the bottom end of the placement groove 11, and the motor 19 stops rotating. Before the shutter is opened, the filter screen 4 is cleaned firstly, so that the cleanliness of the filter screen 4 can be increased, the influence of the filter screen 4 on indoor and outdoor air flow is reduced, outdoor dust is not easy to adhere to the surface of the filter screen 4, and the effects of dust prevention and mosquito prevention are better achieved.

As shown in fig. 4 and 6, when people need to close the shutter, people reverse by controlling the motor 19 through remote control, the motor 19 drives the cleaning plate 12 to move upwards with the pressing block in a reverse way, and after the pressing block is far away from the push rod 34, the reset block 35 pushes the rack 33 to move reversely under the elastic force of the reset spring 36 until the reset spring 36 is in a natural state; in the process, the rack 33 moves to drive the second gear 32 to rotate reversely, so that the second rotating shaft 27 drives the driving rope 3 to close the shutter; then, the cleaning plate 12 slides on the filter screen 4 with the cleaning brush 13 driven by the motor 19, the filter screen 4 is cleaned once, and finally, after the cleaning plate 12 is hidden at the top end of the placement groove 11, the motor 19 stops rotating; when the shutter is closed, the filter screen 4 is cleaned, and dust caused by airflow when the shutter is opened can be timely cleaned from the filter screen 4.

The implementation principle of the embodiment of the utility model is as follows: when the shutter is in a closed state, the cleaning plate 12 is hidden above the placing groove 11, when people need to open the shutter, the people can start the motor 19 through remote control, the motor 19 rotates to drive the second screw rod 17 to rotate, the cleaning plate 12 moves downwards under the action of the second screw rod 17 and the second guide rod 18, the cleaning plate 12 moves downwards to drive the cleaning brush 13 to slide on the surface of the filter screen 4, so that the cleaning brush 13 cleans the filter screen 4, meanwhile, the second screw rod 17 rotates to start the fan blade 14 to rotate through the rotating assembly 16, and the fan blade 14 rotates to blow wind energy to strengthen the cleaning effect of the filter screen 4;

when the cleaning brush 13 is cleaned from the upper end to the lower end of the filter screen 4, the cleaning plate 12 enters the bottom end inner cavity of the placement groove 11 under the drive of the second screw rod 17, the push rod 34 is pushed to move downwards in the process that the cleaning plate 12 enters the placement groove 11, and the second rotating shaft 27 can be driven to rotate by the movement of the push rod 34 through the rack 33 and the second gear 32, so that the shutter is opened, and meanwhile, the cleaning plate 12 is hidden at the bottom end of the placement groove 11; therefore, before the shutter is opened, the filter screen 4 is cleaned firstly, so that the cleanliness of the filter screen 4 can be increased, the influence of the filter screen 4 on indoor and outdoor air flow is reduced, outdoor dust is not easy to adhere to the surface of the filter screen 4, and the effects of dust prevention and mosquito prevention are better achieved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a dustproof shutter, includes frame (1), a plurality of driving rope (3) and a plurality of blade (2), its characterized in that: a storage groove (9) is formed in the frame (1), a filter screen (4) is detachably connected to the inner wall of the storage groove (9), and a fixing assembly (5) for fixing the filter screen (4) is arranged in the storage groove (9).

2. A dust blind according to claim 1, wherein: the fixing assembly (5) comprises a clamping frame (10), a first screw rod (6) and a first guide rod (7); the first screw rod (6) is rotationally connected to the inner wall of the storage groove (9), the first guide rod (7) is fixedly connected to the inner wall of the storage groove (9), the clamping frame (10) is in threaded connection with the first screw rod (6), and the clamping frame (10) is in sliding connection with the first guide rod (7); the clamping frame (10) is abutted against the filter screen (4).

3. A dust blind according to claim 1, wherein: a placement groove (11) is formed in the inner wall of the storage groove (9), a cleaning plate (12) and fan blades (14) slide in the placement groove (11), and the fan blades (14) are rotatably connected to the cleaning plate (12); a cleaning brush (13) is fixedly arranged on the cleaning plate (12), and the cleaning brush (13) is connected with the filter screen (4) in a sliding manner; a driving component (15) for driving the cleaning brush (13) to move is arranged in the placing groove (11), and a rotating component (16) for driving the fan blades (14) to rotate is arranged on the cleaning plate (12).

4. A dust shutter according to claim 3, wherein: the driving assembly (15) comprises a second screw rod (17), a second guide rod (18) and a motor (19); the motor (19) is fixedly arranged on the inner wall of the placement groove (11), one end of the second screw rod (17) is fixedly connected with a rotating shaft of the motor (19), the other end of the second screw rod (17) is rotatably connected with the inner wall of the placement groove (11), and two ends of the second guide rod are respectively and fixedly connected with the opposite inner walls of the placement groove (11); the cleaning plate (12) is in threaded connection with the second screw rod (17), and the cleaning brush (13) is in sliding connection with the guide rod.

5. A dust blind according to claim 4, wherein: the rotating assembly (16) comprises a rotating rod (20), a first gear (21) and a crown gear (22); the crown gear (22) is rotationally connected to the cleaning plate (12), and the crown gear (22) is sleeved on the second screw rod (17); a rotating groove (23) is formed in the side wall of the second screw rod (17), a connecting block (24) is arranged on the inner wall of the crown gear (22), and the connecting block (24) is connected to the inner wall of the rotating groove (23) in a sliding mode;

the cleaning plate (12) is fixedly provided with a fixed block (25), the rotating rod (20) penetrates through and is rotatably connected with the fixed block (25), the fan blade (14) is fixedly sleeved at one end of the rotating rod (20), and the first gear (21) is fixedly sleeved at the other end of the rotating rod (20); the first gear (21) meshes with the crown gear (22).

6. A dust shutter according to claim 3, wherein: the two opposite ends of the frame (1) are respectively provided with a first rotating shaft (26) and a second rotating shaft (27) in a rotating way, and the driving rope (3) is wound on the first rotating shaft (26) and the second rotating shaft (27);

a plurality of clamping holes (28) are formed in the peripheral side walls of the first rotating shaft (26) and the second rotating shaft (27), clamping beads (29) are fixedly sleeved on the driving rope (3), and the clamping beads (29) are matched with the clamping holes (28); the frame (1) is provided with a transmission groove (31), and the transmission groove (31) is provided with a transmission assembly (30) for driving the second rotating shaft (27) to rotate.

7. A dust blind according to claim 6, wherein: a transmission groove (31) is formed in the frame (1), and the transmission assembly (30) comprises a second gear (32), a rack (33) and a push rod (34); the rack (33) slides in the transmission groove (31), the push rod (34) is fixedly connected to the rack (33), the push rod (34) penetrates through the inner wall of the transmission groove (31), and the push rod (34) slides in the placement groove (11); a pressing block (8) is fixedly connected to the cleaning plate (12), and the pressing block (8) is abutted to the push rod (34); the second gear (32) is fixedly sleeved on the second rotating shaft (27), and the second gear (32) is meshed with the rack (33).

8. A dust blind according to claim 7, wherein: a reset block (35) and a reset spring (36) are arranged in the transmission groove (31), the reset block (35) is fixedly connected to the side wall of the rack (33), one end of the reset spring (36) is fixedly connected to the reset block (35), and the other end of the reset spring (36) is fixedly connected to the inner wall of the transmission groove (31).