An easy-to-clean smoke exhaust fan

Abstract

The present application relates to an easy-to-clean smoke exhaust fan, comprising a housing, a forward-curved multi-blade impeller, and a rotating assembly. An air outlet is provided on the housing; a cleaning assembly is provided on the housing; the cleaning assembly comprises a support box, a cleaning member, a sliding block, a driving gear, and a driving rack; the cleaning member comprises a rotating rod and bristles, the rotating rod is rotatably connected to the sliding block, the driving gear is coaxially fixed to the rotating rod, the driving rack is arranged in the support box, and the driving gear is meshed with the driving rack; the cleaning assembly also comprises a driving screw and a driving motor for driving the sliding block to slide, the driving screw is threadedly connected to the sliding block, and the driving motor drives the driving screw to rotate; the cleaning assembly also comprises a sliding assembly, and when the support box approaches the wheel wing, the rotating rod enters the gap between adjacent wheel wings. By providing the sliding block, the driving gear, the driving rack, the rotating rod, and the bristles, the rotating rod and the bristles can clean the gap between the wheel wings after rotation, making the smoke exhaust fan easy to clean.

Description

Technical Field

[0001] The present application relates to the field of fans, and in particular to a smoke exhaust fan that is easy to clean. Background Art

[0002] Smoke exhaust fans are mainly used to quickly exhaust odor, high temperature, and oil smoke gases, and are widely used in high-end civil buildings, ovens, underground garages, tunnels and other occasions.

[0003] Centrifugal exhaust fans have a high total pressure, and their motors are isolated from high-temperature oil smoke gases, making them less susceptible to damage. However, since centrifugal exhaust fans are often used to exhaust oil smoke, they require frequent cleaning. Oil smoke fans typically have several blades, making cleaning very inconvenient. Summary of the Invention

[0004] In order to facilitate the cleaning of the smoke exhaust fan, the present application provides an easy-to-clean smoke exhaust fan.

[0005] This application provides an easy-to-clean smoke exhaust fan, which adopts the following technical solutions:

[0006] The yoke is provided with a plurality of gears, and the gears are connected with the gears of the plurality of gears, and the gears are connected with the gears of the plurality of gears to form a plurality of cleaning agents.

[0007] The cleaning assembly further includes a drive screw and a drive motor for driving the sliding block to slide, wherein the length direction of the drive screw is parallel to the length direction of the drive rack, the drive screw is threadedly connected to the sliding block, and the drive motor is used to drive the drive screw to rotate;

[0008] The cleaning assembly further comprises a sliding assembly for driving the support box to move away from or approach the wheel wing. When the support box approaches the wheel wing, the rotating rod enters the gap between adjacent wheel wings.

[0009] By adopting the above technical solution, the support box is away from or close to the wheel wing, so that when the cleaning piece is close to the wheel wing, the cleaning piece is located in the gap between adjacent wheel wings, and the bristles are against the side walls of the wheel wing. Then the driving motor is driven to rotate to drive the driving screw to rotate, thereby driving the sliding block to slide, so that the driving gear rolls on the driving rack, drives the rotating rod to rotate, and rotates the bristles, so that the bristles clean the side walls of the wheel wing; when the support box is away from the wheel wing, the forward curved multi-blade impeller can work normally to discharge air; in the technical solution of this application, when there is a lot of dirt on the wheel wing, detergent is sprayed on the wheel wing, and then it is cleaned with a brush, so that the dirt is easy to clean.

[0010] Optionally, the casing includes an outer shell and a turbine shell inside the outer shell, a slide rail is fixed on the inner wall of the turbine shell, a slideway for accommodating the slide rail is provided on the end surface of the support box away from the drive motor, and the length direction of the slide rail is the direction away from or close to the wheel wing; a screw hole for the drive screw to pass through the support box is provided on the side wall of the support box away from the slide rail; a slide groove is provided on the side wall of the turbine shell away from the slide rail, the drive motor is located outside the turbine shell, the motor shaft of the drive motor is located in the slide groove, and the length direction of the slide groove is parallel to the length direction of the slide rail;

[0011] The sliding assembly includes a sliding screw and a sliding motor. A sliding seat is slidingly provided on the outer wall of the turbine shell. The driving motor is fixed on the sliding seat. The sliding screw is threadedly connected to the sliding seat. The length direction of the sliding screw is parallel to the length direction of the sliding groove. The sliding motor drives the sliding screw to rotate.

[0012] By adopting the above technical solution, the turbine housing is located within the outer shell, which houses the sliding screw and sliding motor, giving the smoke exhaust fan a neat appearance. When the slide rail slides within the slideway, the motor shaft slides within the slide groove, and the sliding motor drives the sliding screw to rotate, thereby driving the sliding seat to slide, making the sliding seat slide easily.

[0013] Optionally, a stabilizing block is fixed on the sliding seat, and the stabilizing block is slidably located in the sliding groove, and the side walls of the stabilizing block are in sliding contact with the two groove walls of the sliding groove.

[0014] By adopting the above technical solution, the stabilizing block slides in the sliding groove, thereby improving the sliding stability of the sliding seat.

[0015] Optionally, an automatic flipping structure is further included, the automatic flipping structure comprising a fixed rod, a flipping rod, a torsion spring and a magnet block; the end of the fixed rod is fixed to the support box, the flipping rod is hinged to the end of the fixed rod away from the support box via a hinge shaft, the torsion spring is sleeved on the hinge shaft, the two ends of the torsion spring are respectively connected to the fixed rod and the flipping rod, and the magnet block is fixed to the end of the flipping rod away from the fixed rod; the angle between the flipping rod and the vertical direction is greater than the angle between the rotating rod and the vertical direction;

[0016] When the support box moves close to the wheel wing, the magnet block first absorbs the support plate, and the support box continues to approach the wheel wing, and the flip rod overcomes the elastic force of the torsion spring and rotates until the rotating rod extends into the gap between the two wheel wings; when the support box slides away from the wheel wing, the rotating rod first disengages from the gap between the two wheel wings, and then the magnet block absorbs the support plate to drive the support plate to rotate, so that the gap between the next adjacent wheel wings faces the rotating rod.

[0017] By adopting the above technical solution and setting the automatic flip structure, when the forward curved multi-blade impeller is being cleaned, the forward curved multi-blade impeller can automatically rotate so that the cleaning piece can enter the gaps between the several wheel blades in turn for cleaning, thereby achieving fully automatic cleaning and making cleaning convenient;

[0018] By setting a fixed rod, a flip rod, a torsion spring and a magnet block, when the support box approaches the wheel wing, the magnet block is first adsorbed on the side wall edge of the support disk, and as the support box continues to approach the wheel wing, the torsion spring flip rod overcomes the elastic force of the torsion spring and rotates, and the position where the magnet block is adsorbed is next to the gap between the two adjacent wheel wings where the current cleaning piece is located; when the previous gap is cleaned, the support box moves away from the wheel wing, and the adsorption force of the magnet block on the support disk drives the wheel disk to rotate, so that the next gap is opposite to the cleaning piece, and then the cleaning piece enters the gap next to the cleaned gap when supporting and approaching the wheel wing next time, and thus reciprocates in sequence, thereby realizing fully convenient cleaning of the forward curved multi-blade impeller, and there is no need to manually rotate the forward curved multi-blade impeller to change the gap facing the cleaning piece, making cleaning convenient.

[0019] Optionally, the sliding block is provided with a plurality of driving gears and cleaning pieces, the driving gears and cleaning pieces are connected in a one-to-one correspondence, the axes of the plurality of driving gears are parallel, and the plurality of driving gears are engaged with the driving racks at the same time.

[0020] By adopting the above technical solution and providing a plurality of driving gears and cleaning parts, the cleaning effect is improved and the cleaning of the smoke exhaust fan is made more convenient.

[0021] Optionally, the rotating assembly includes a rotating motor, a synchronous belt and two synchronous wheels, the two synchronous wheels are rotatably connected to the outer wall of the casing, one of the synchronous wheels is coaxially fixed with the main shaft, and the other synchronous wheel is coaxially fixed with the motor shaft of the rotating motor, and the synchronous belt is tensioned and connected to the two synchronous wheels.

[0022] By adopting the above technical solution, the rotating motor drives the main shaft to rotate, thereby driving the forward curved multi-blade impeller to rotate. The transmission is achieved through the synchronous wheel and the synchronous belt, which facilitates the installation of the rotating motor. At the same time, by adjusting the size of the outer diameter of the synchronous wheel, the speed of the forward curved multi-blade impeller can be conveniently controlled.

[0023] Optionally, a protective cover for accommodating two synchronous wheels is further included, wherein the protective cover is fixed on the outer wall of the shell, and the two synchronous wheels are located between the protective cover and the outer wall of the shell.

[0024] By adopting the above technical solution, the protective cover protects the synchronous wheel and the synchronous belt, thereby improving the safety of the smoke exhaust fan and also improving the rotation stability of the forward curved multi-blade impeller.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. By setting a sliding block, a driving gear, a driving rack, a rotating rod and bristles, and sliding the support box away from or close to the wheel wing, the rotating rod and the bristles are rotated to clean the gap between the wheel wings, making it easy to clean the smoke exhaust fan;

[0027] 2. By setting a fixed rod, a flip rod, a torsion spring and a magnet block, there is no need to manually rotate the forward curved multi-blade impeller to change the gap facing the cleaning piece, making cleaning convenient;

[0028] 3. By setting up several driving gears and cleaning parts, the cleaning effect of the forward curved multi-blade impeller is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is an overall schematic diagram of the easy-to-clean smoke exhaust fan of the embodiment of the present application Figure 1 .

[0030] Figure 2 This is an overall schematic diagram of the easy-to-clean smoke exhaust fan of the embodiment of the present application Figure 2 .

[0031] Figure 3 Schematic diagram of the internal structure of the housing and protective cover of the embodiment.

[0032] Figure 4 2 is a schematic structural diagram of a cleaning component of an embodiment.

[0033] Figure 5 It is a schematic structural diagram of the outer wall of the turbine housing of the embodiment, mainly showing the structure of the slide groove and the sliding seat.

[0034] Figure 6 yes Figure 4 Magnified view of point A.

[0035] Figure 7 2 is a schematic structural diagram of the automatic flipping structure of the embodiment.

[0036] Explanation of reference numerals: 1. Casing; 11. Outer shell; 111. Air inlet; 12. Turbine housing; 121. Air outlet; 122. Ventilation port; 123. Support frame; 124. Slide rail; 125. Slide chute; 13. Machine stool; 14. Protective cover; 2. Forward curved multi-blade impeller; 21. Main shaft; 22. Fixed circular plate; 23. Support disk; 24. Wing; 3. Rotating assembly; 31. Rotating motor; 32. Synchronous belt; 33. Synchronous wheel; 4. Cleaning assembly; 41. Support Support box; 411, movable groove; 412, slideway; 413, screw hole; 42, cleaning part; 421, rotating rod; 422, bristles; 43, sliding block; 44, driving gear; 45, driving rack; 46, driving screw; 47, driving motor; 5, sliding assembly; 51, sliding screw; 52, sliding motor; 53, sliding seat; 531, stabilizing block; 6, automatic flipping structure; 61, fixing rod; 62, flipping rod; 63, torsion spring; 64, magnet block. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-7 This application is described in further detail.

[0038] The embodiment of the present application discloses a smoke exhaust fan that is easy to clean. Figure 1 、 Figure 2 The easy-to-clean smoke exhaust fan includes a housing 1, a forward-curved multi-blade impeller 2 disposed within the housing 1, and a rotating assembly 3 that drives the forward-curved multi-blade impeller 2. The housing 1 includes an outer shell 11 and a turbine housing 12 disposed within the outer shell 11. The turbine housing 12 has an air outlet 121 formed in front thereof, which communicates with the outside world. Ventilation ports 122 are formed on both sides of the turbine housing 12. An air inlet 111 is formed on the side wall of the housing 11 facing away from the air outlet 121, and the ventilation ports 122 communicate with the outside world through the air inlet 111.

[0039] Reference Figure 3 The forward-curved multi-blade impeller 2 is located within the turbine housing 12. Support frames 123 are fixed on both sides of the turbine housing 12. The forward-curved multi-blade impeller 2 comprises a main shaft 21, a fixed circular plate 22, two support discs 23, and a plurality of impellers 24 arranged and fixed along the circumferential edges of the support discs 23. The main shaft 21 is rotatably connected to the support frame 123 at both ends. The support discs 23 are annular and coaxially arranged. The two support discs 23 are coaxially arranged with the vents 122. The ends of the impellers 24 are fixed to the opposing sidewalls of the two support discs 23. The circumferential edge of the fixed circular plate 22 is fixed to the middle of the impellers 24 on the side facing the main shaft 21. The center of the fixed circular plate 22 is coaxially fixed to the middle of the main shaft 21, so that rotation of the main shaft 21 drives the rotation of the impellers 24.

[0040] Reference Figure 3The rotating assembly 3 includes a rotating motor 31, a synchronous belt 32, and two synchronous pulleys 33. The two synchronous pulleys 33 are rotatably connected to the outer wall of the housing 1. One synchronous pulley 33 is coaxially fixed to the main shaft 21, and the other synchronous pulley 33 is coaxially fixed to the motor shaft of the rotating motor 31. The synchronous belt 32 is tensioned and connected to the two synchronous pulleys 33. A machine stool 13 is fixed to the outer wall of the housing 11, and the rotating motor 31 is fixed to the machine stool 13. The outer diameter of the synchronous pulley 33 coaxial with the rotating motor 31 is smaller than that of the other synchronous pulley 33, which has a certain speed reduction effect.

[0041] Reference Figure 2 、 Figure 3 The easy-to-clean smoke exhaust fan also includes a protective cover 14 that houses two synchronous pulleys 33. The circumferential edge of the protective cover 14 is fixed to the outer wall of the housing 11, and the two synchronous pulleys 33 are located between the protective cover 14 and the outer wall of the housing 1. The rotary motor 31 is located outside the protective cover 14. The motor shaft of the rotary motor 31 passes through the protective cover 14 and is coaxially fixed to one of the synchronous pulleys 33.

[0042] Reference Figure 3 、 Figure 4 , a cleaning assembly 4 for cleaning the wheel wing 24 is provided on the casing 1. The cleaning assembly 4 comprises a support box 41, a cleaning member 42, a sliding block 43, a driving gear 44 and a driving rack 45. The length direction of the support box 41 is parallel to the length direction of the wheel wing 24, and the driving rack 45 is fixed in the support box 41, and the length direction of the driving rack 45 is parallel to the length direction of the support box 41. The cleaning member 42 comprises a rotating rod 421 and bristles 422 fixed to the circumferential side walls of the rotating rod 421, the rotating rod 421 is rotatably connected to the sliding block 43, the driving gear 44 is coaxially fixed with the rotating rod 421, and the driving gear 44 is located in the support box 41 and meshes with the driving rack 45. The sliding block 43 is slidably connected in the support box 41, and the sliding direction of the sliding block 43 is parallel to the length direction of the driving rack 45. The support box 41 is provided with a movable groove 411 for the end of the rotating rod 421 to pass through the support box 41. The movable groove 411 is opened on the side of the support box 41 facing the wheel wing 24. The long direction of the movable groove 411 is parallel to the direction of the rack, and the rotating rod 421 slides in the movable groove 411.

[0043] Reference Figure 4 There are three cleaning members 42 and three driving gears 44 , and the cleaning members 42 and the driving gears 44 are connected one by one. The three cleaning members 42 are connected to the sliding block 43 in a side-by-side rotation manner, and the three driving gears 44 are engaged with the driving rack 45 .

[0044] Reference Figure 4The cleaning assembly 4 further includes a drive screw 46 and a drive motor 47 that drive the sliding block 43 to slide along the length of the drive rack 45. The length of the drive screw 46 is parallel to the length of the drive rack 45. Both ends of the drive screw 46 are rotatably connected to the support box 41, and the drive screw 46 is threadedly connected to the sliding block 43. The drive motor 47 is located outside the turbine housing 12. The motor shaft of the drive motor 47 passes through the turbine housing 12 and is coaxially fixed to the drive screw 46.

[0045] Referring to FIG. 5 , support box 41 is positioned above forward-curved multi-blade impeller 2 and is slidably connected to the inner wall of turbine housing 12. Slide rails 124 are fixed to the inner wall of turbine housing 12. A slideway 412 for accommodating slide rails 124 is defined on the end face of support box 41 facing away from drive motor 47. The length of slide rails 124 extends away from or toward impeller 24.

[0046] Reference Figure 4 、 Figure 5 A screw hole 413 is defined on the side wall of the support box 41 away from the slide rail 124, through which the drive screw 46 passes. The end of the drive screw 46 that passes through the screw hole 413 is coaxially fixed to the drive motor 47. A chute 125 is defined on the side wall of the turbine housing 12 away from the slide rail 124. The motor shaft of the drive motor 47 passes through the chute 125 and slides within the chute 125. The length of the chute 125 is parallel to the length of the slide rail 124.

[0047] Reference Figure 4 、 Figure 5 The cleaning assembly 4 also includes a sliding assembly 5 that drives the support box 41 along the length of the slide rail 124, away from or toward the wheel wings 24. When the support box 41 approaches the wheel wings 24, the rotating rod 421 enters the gap between adjacent wheel wings 24. The fixed circular plate 22 is provided with a plurality of escape grooves that align with the gaps between adjacent wheel wings 24, facilitating the movement of the rotating rod 421 within the gaps between adjacent wheel wings 24.

[0048] Reference Figure 4 、 Figure 5 The sliding assembly 5 includes a sliding screw 51 and a sliding motor 52. A sliding seat 53 is slidably connected to the outer wall of the turbine housing 12, and the sidewall of the sliding seat 53 is in sliding contact with the outer wall of the turbine housing 12. The drive motor 47 is fixed to the sliding seat 53. The ends of the sliding screw 51 are rotatably connected to the outer wall of the turbine housing 12, and the sliding screw 51 is threadedly connected to the sliding seat 53. The length of the sliding screw 51 is parallel to the length of the chute 125. The sliding motor 52 is fixed to the turbine housing 12, and the motor shaft of the sliding motor 52 is coaxially fixed with the sliding screw 51. The sliding motor 52 drives the sliding screw 51 to rotate.

[0049] Reference Figure 5 、 Figure 6 A stabilizing block 531 is fixed on the sliding seat 53 , and the stabilizing block 531 slides in the slide groove 125 . The side walls of the stabilizing block 531 slide in contact with the two groove walls of the slide groove 125 , thereby improving the sliding stability of the sliding seat 53 .

[0050] Reference Figure 6 、 Figure 7 The easy-to-clean smoke exhaust fan also includes an automatic flipping structure 6. The automatic flipping structure 6 includes a fixed rod 61, a flipping rod 62, a torsion spring 63 and a magnet block 64. The end of the fixed rod 61 is fixed to the side wall of the support box 41 facing the wheel wing 24, and extends in the direction close to the wheel wing 24. The flipping rod 62 is hinged to the end of the fixed rod 61 away from the support box 41 through a hinge shaft, and the torsion spring 63 is sleeved on the hinge shaft. The two ends of the torsion spring 63 are respectively connected to the fixed rod 61 and the flipping rod 62. The torsion spring 63 is used to fix the flipping rod 62 so that the angle between the flipping rod 62 and the vertical direction is greater than the angle between the rotating rod 421 and the vertical direction. The magnet block 64 is fixed to the end of the flipping rod 62 away from the fixed rod 61, and the magnet block 64 faces the support plate 23.

[0051] When the support box 41 moves closer to the wheel wings 24, the magnet block 64 first attracts the support plate 23, and then the support box 41 continues to slide closer to the wheel wings 24. At this time, the magnet block 64 is attracted to the support plate 23, making it difficult for the magnet block 64 to move on the support plate 23, causing the flip rod 62 to overcome the elastic force of the torsion spring 63 and rotate around the hinge axis until the rotating rod 421 extends into the gap between the two wheel wings 24. After the gap between two of the wheel wings 24 is cleared, the support box 41 slides away from the wheel wings 24, and the rotating rod 421 first disengages from the gap between the two wheel wings 24. Then the magnet block 64 attracts the support plate 23, driving the support plate 23 to rotate, so that the gap between the next adjacent wheel wings 24 faces the rotating rod 421.

[0052] The working principle of the easy-to-clean smoke exhaust fan of the present embodiment is as follows: when cleaning is required, a cleaning liquid is sprayed on the impeller 24, and the sliding motor 52 first drives the rotating screw to rotate, causing the sliding seat 53 to slide close to the impeller 24, so that the support box 41 is close to the impeller 24, and the rotating rod 421 is located in the gap between two adjacent impellers 24. The driving motor 47 rotates, causing the sliding block 43 to slide back and forth along the length direction of the driving rack 45, causing the driving gear 44 to drive the rotating rod 421 to rotate, and the brush cleans the gap between the two impellers 24.

[0053] After the gap between the wheel wings 24 is cleaned, the sliding motor 52 drives the support box 41 to slide away from the wheel wings 24. At this time, because the magnet block 64 adsorbs the support plate 23 and drives the support plate 23 to rotate, the gap between the next adjacent wheel wings 24 is directed toward the rotating rod 421, so that the support box 41 slides toward the wheel wings 24 again and the cleaning member 42 automatically enters another gap, thereby realizing automatic cleaning of the smoke exhaust fan and making the smoke exhaust fan easy to clean.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An easy-to-clean smoke exhaust fan, comprising a housing (1), a forward-curved multi-blade impeller (2) disposed in the housing (1), and a rotating assembly (3) for driving the forward-curved multi-blade impeller (2) to rotate, wherein the housing (1) is provided with an air outlet (121); the forward-curved multi-blade impeller (2) comprises a main shaft (21), a fixed circular plate (22), two support discs (23), and a plurality of wheel blades (24) arranged and fixed along the circumferential edge of the support disc (23), the circumferential edge of the fixed circular plate (22) being fixed to the middle of the plurality of wheel blades (24), and characterized in that: The housing (1) is provided with a cleaning assembly (4) for cleaning the wheel wing (24); the cleaning assembly (4) comprises a support box (41), a cleaning member (42), a sliding block (43), a driving gear (44) and a driving rack (45); the cleaning member (42) comprises a rotating rod (421) and bristles (422) fixed to the circumferential side wall of the rotating rod (421); the rotating rod (421) is rotatably connected to the sliding block (43); the driving gear (44) is coaxially fixed to the rotating rod (421); the driving rack (45) is arranged in the supporting box (41); the driving gear (44) is meshed with the driving rack (45); the length direction of the driving rack (45) is aligned with the wheel wing (24); 4); a movable groove (411) is provided on one side of the support box (41) facing the wheel wing (24), and the rotating rod (421) extends from the movable groove (411); the cleaning assembly (4) further comprises a driving screw (46) and a driving motor (47) for driving the sliding block (43) to slide, the length direction of the driving screw (46) being parallel to the length direction of the driving rack (45), the driving screw (46) being threadedly connected to the sliding block (43), and the driving motor (47) being used to drive the driving screw (46) to rotate; the cleaning assembly (4) further comprises a sliding assembly (5) for driving the support box (41) away from or close to the wheel wing (24), and the support box (41) is close to When the wheel wing (24) is rotated, the rotating rod (421) enters the gap between adjacent wheel wings (24); it also includes an automatic flipping structure (6), the automatic flipping structure (6) includes a fixed rod (61), a flip rod (62), a torsion spring (63) and a magnet block (64); the end of the fixed rod (61) is fixed to the support box (41), the flip rod (62) is hinged to the end of the fixed rod (61) away from the support box (41) through a hinge shaft, the torsion spring (63) is sleeved on the hinge shaft, the two ends of the torsion spring (63) are respectively connected to the fixed rod (61) and the flip rod (62), the magnet block (64) is fixed to the end of the flip rod (62) away from the fixed rod (61); the flip rod (62) The angle between the support box (41) and the vertical direction is greater than the angle between the rotating rod (421) and the vertical direction; when the support box (41) moves close to the wheel wing (24), the magnet block (64) first absorbs the support plate (23), and the support box (41) continues to approach the wheel wing (24), and the flip rod (62) overcomes the elastic force of the torsion spring (63) and rotates until the rotating rod (421) extends into the gap between the two wheel wings (24); when the support box (41) slides away from the wheel wing (24), the rotating rod (421) first disengages from the gap between the two wheel wings (24), and then the magnet block (64) absorbs the support plate (23) to drive the support plate (23) to rotate, so that the gap between the next adjacent wheel wings (24) faces the rotating rod (421).

2. The easy-to-clean smoke exhaust fan according to claim 1, characterized in that: The casing (1) comprises an outer shell (11) and a turbine shell (12) in the outer shell (11); a slide rail (124) is fixed on the inner wall of the turbine shell (12); a slideway (412) for accommodating the slide rail (124) is provided on the end surface of the support box (41) away from the drive motor (47); the length direction of the slide rail (124) is the direction away from or close to the wheel wing (24); a screw hole (413) for the drive screw (46) to pass through the support box (41) is provided on the side wall of the support box (41) away from the slide rail (124); a slide groove (125) is provided on the side wall of the turbine shell (12) away from the slide rail (124); the drive motor (47) is located outside the turbine shell (12), the motor shaft of the driving motor (47) is located in the slide groove (125), and the length direction of the slide groove (125) is parallel to the length direction of the slide rail (124); the sliding assembly (5) includes a sliding screw (51) and a sliding motor (52), a sliding seat (53) is slidingly provided on the outer wall of the turbine shell (12), the driving motor (47) is fixed on the sliding seat (53), the sliding screw (51) is threadedly connected to the sliding seat (53), the length direction of the sliding screw (51) is parallel to the length direction of the slide groove (125), and the sliding motor (52) drives the sliding screw (51) to rotate.

3. The easy-to-clean smoke exhaust fan according to claim 2, characterized in that: A stabilizing block (531) is fixed on the sliding seat (53), and the stabilizing block (531) is slidably located in the sliding groove (125), and the side walls of the stabilizing block (531) are in sliding contact with the two groove walls of the sliding groove (125).

4. The easy-to-clean smoke exhaust fan according to claim 1, characterized in that: The sliding block (43) is provided with a plurality of driving gears (44) and cleaning members (42), the driving gears (44) and cleaning members (42) are connected in a one-to-one correspondence, the axes of the plurality of driving gears (44) are parallel, and the plurality of driving gears (44) are simultaneously engaged with the driving rack (45).

5. The easy-to-clean smoke exhaust fan according to claim 1, characterized in that: The rotating assembly (3) comprises a rotating motor (31), a synchronous belt (32) and two synchronous wheels (33), wherein the two synchronous wheels (33) are rotatably connected to the outer wall of the housing (1), wherein one synchronous wheel (33) is coaxially fixed to the main shaft (21), and the other synchronous wheel (33) is coaxially fixed to the motor shaft of the rotating motor (31), and the synchronous belt (32) is tensionedly connected to the two synchronous wheels (33).

6. The easy-to-clean smoke exhaust fan according to claim 5, characterized in that: It also includes a protective cover (14) for accommodating two synchronous wheels (33), wherein the protective cover (14) is fixed on the outer wall of the housing (11), and the two synchronous wheels (33) are located between the protective cover (14) and the outer wall of the casing (1).

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