Smoke exhaust and fire prevention device with filtering and purifying functions for air conditioning

Abstract

The invention relates to a smoke exhaust and fire prevention device with a filtering and purifying function for air conditioning, and belongs to the technical field of fire fighting equipment.The smoke exhaust and fire prevention device with the filtering and purifying function for air conditioning comprises a smoke exhaust cylinder, and a rotating cylinder is rotationally arranged in the center of the interior of the smoke exhaust cylinder; a plurality of blades are rotatably arranged on the circumference of the outer side of the rotating cylinder at equal intervals, an adjusting mechanism for driving the blades to rotate at the same time is arranged in the rotating cylinder, a driving motor for driving the rotating cylinder to rotate is fixedly arranged on the inner side of the smoke discharging cylinder, and a first ash scraping mechanism matched with the edges of one sides of the blades is arranged on the inner side of the smoke discharging cylinder; a second ash scraping mechanism matched with the edges of the other sides of the blades is arranged on the inner side of the smoke discharging cylinder, and a plurality of mounting mechanisms are arranged on the circumference of the outer side of the smoke discharging cylinder at equal intervals. Dust on the edges of the blades can be scraped through the first ash scraping mechanism and the second ash scraping mechanism, smoke discharging is prevented from being hindered, and the smoke discharging effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fire-fighting equipment, and in particular relates to a smoke exhaust and fire-prevention device for air conditioning with filtering and purifying functions. Background Art

[0002] After a fire occurs in a building, thick smoke will be produced. Due to the rising effect of hot air, a large amount of thick smoke will float to the upper floors. If people escape in the thick smoke, if they are not properly protected, they will easily inhale the thick smoke into their bodies, causing fainting or suffocation. At the same time, the eyes will be irritated by the smoke, causing stinging and unable to open, so smoke becomes an obstacle to escape from the fire. In the construction process of modern buildings, fire-fighting equipment has become an indispensable part. Among them, fire-fighting smoke exhaust devices, as one of the fire-fighting devices, can exhaust smoke in time, buying precious time for people to escape in case of fire.

[0003] For example, in the Chinese invention patent application with publication number CN116772334A, entitled "An intelligent smoke exhaust device for fire protection that is easy to replace", it includes a movable base plate, a stabilizing box is fixedly installed on the bottom end of the movable base plate, the interior of the stabilizing box includes a first motor and a first rotating column, a fixed box is fixedly installed on the top end of the movable base plate, a second supporting column is fixedly installed on the top end of the fixed box, and a smoke exhaust pipe is movably installed on the top end of the second supporting column. Although the above-mentioned prior art can filter the thick smoke through the dustproof net, since dust is mixed in the thick smoke and the dust particles are relatively small, they are easy to adhere to the edge of the blades. If they are not cleaned for a long time, the smoke exhaust effect will be affected. Therefore, there is a need for an air conditioning smoke exhaust and fire protection device with filtering and purification functions. Summary of the invention

[0004] The purpose of the present invention is to provide a smoke exhaust and fire prevention device for air conditioning with simple structure and reasonable design and filtering and purifying functions in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A smoke exhaust and fire prevention device for air conditioning with filtering and purification functions comprises a smoke exhaust chimney, a rotating drum is rotatably arranged at the inner center of the smoke exhaust chimney, a plurality of blades are rotatably arranged at an equidistant outer circumference of the rotating drum, an adjusting mechanism for simultaneously driving the plurality of blades to rotate is arranged inside the rotating drum, a driving motor for driving the rotating drum to rotate is fixedly arranged on the inner side of the smoke exhaust chimney, a first scraping mechanism cooperating with one side edge of the plurality of blades is arranged on the inner side of the smoke exhaust chimney, a second scraping mechanism cooperating with the other side edge of the plurality of blades is arranged on the inner side of the smoke exhaust chimney, and a plurality of mounting mechanisms are equidistantly arranged on the outer circumference of the smoke exhaust chimney.

[0007] As a further optimization scheme of the present invention, the adjustment mechanism includes several rotating shafts that rotate and penetrate the side wall of the rotating drum, one end of the rotating shaft is fixedly connected to the blade, and the other ends of the several rotating shafts are fixedly sleeved with planetary bevel gears located inside the rotating drum, and a central bevel gear that is rotatably arranged on the inner side of the rotating drum and meshes with the several planetary bevel gears at the same time, a servo motor that drives the central bevel gear to rotate is horizontally fixed at the inner bottom of the rotating drum, and a battery electrically connected to the servo motor is arranged on the inner side of the rotating drum.

[0008] As a further optimization scheme of the present invention, the central fixed sleeve of the central bevel gear is provided with a transmission rod, one end of the transmission rod is rotatably provided with a fixing plate fixedly connected to the rotating drum, and a sealing cover is fixedly installed on the front side of the rotating drum by screws.

[0009] As a further optimization solution of the present invention, a fixed base matching with one end of the rotating shaft is fixedly provided at one end of the plurality of blades, and the fixed base is fixedly connected to the one end of the rotating shaft via a positioning screw.

[0010] As a further optimization scheme of the present invention, the first scraping mechanism includes a first scraping plate fixedly arranged on the inner side of the smoke exhaust pipe by screws, and a plurality of first scraping bristles cooperating with the front edge of the blade are fixedly arranged on one side of the first scraping plate.

[0011] As a further optimization scheme of the present invention, the second scraping mechanism includes a second scraping plate fixedly arranged on the inner side of the smoke exhaust pipe by screws, and a plurality of second scraping bristles cooperating with the rear edge of the blade are fixedly arranged on one side of the second scraping plate.

[0012] As a further optimization scheme of the present invention, a rotating rod is fixedly arranged horizontally at the rear center of the rotating drum, a positioning cylinder is rotatably sleeved on the rotating rod and fixedly connected to the inner wall of the smoke exhaust pipe, and the output end of the driving motor is fixedly connected to one end of the rotating rod.

[0013] As a further optimization solution of the present invention, a first fixing ring is fixedly provided at one end of the inner side of the smoke exhaust pipe, and a first dustproof net is fixedly installed on one side of the first fixing ring by a first fixing screw.

[0014] As a further optimization solution of the present invention, a second fixing ring is fixedly provided at the other inner end of the smoke exhaust pipe, and a second dustproof net is fixedly installed on one side of the second fixing ring by a second fixing screw.

[0015] As a further optimization scheme of the present invention, the mounting mechanism includes an adjustment plate fixedly arranged on the outside of the smoke exhaust pipe, a plurality of screw holes are provided on the adjustment plate, mounting parts are removably installed at both ends of the adjustment plate, the mounting parts are connected to the screw holes by locking screws, and mounting holes are provided on the mounting parts.

[0016] The beneficial effects of the present invention are:

[0017] 1. In the present invention, by using the first scraper plate and the first scraper bristles on the front and rear sides of the blade and the second scraper plate and the second scraper bristles, when the blade is in the process of rotating ventilation, the front and rear edges of the blade can cooperate with the first scraper bristles and the second scraper bristles respectively, so that the dust on the front and rear edges of the blade can be scraped off by the first scraper bristles and the second scraper bristles, thereby preventing long-term smoke exhaust and dust accumulation on the blades, thereby avoiding affecting the smoke exhaust efficiency.

[0018] 2. In the present invention, by driving the central bevel gear to rotate through a servo motor, a plurality of planetary bevel gears meshing on one side of the central bevel gear can be driven to rotate at the same time, thereby driving the rotating shafts of the centers of the plurality of planetary bevel gears to rotate, so that the fixed base at the other end of the rotating shaft and the blades rotate at a certain angle. On the one hand, the angle of the blades can be adjusted, thereby adjusting the smoke exhaust efficiency. On the other hand, the angle of the blades with the first scraper and the second scraper can be adjusted to improve the dust scraping effect, and the wind direction can also be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a first overall structural schematic diagram of the present invention;

[0020] Figure 2 is a second overall structural schematic diagram of the present invention;

[0021] Figure 3 It is a schematic diagram of the first internal structure of the smoke exhaust pipe of the present invention;

[0022] Figure 4 It is a schematic diagram of the second internal structure of the smoke exhaust pipe of the present invention;

[0023] Figure 5 It is a third internal structure schematic diagram of the smoke exhaust pipe of the present invention;

[0024] Figure 6 It is a fourth internal structure schematic diagram of the smoke exhaust pipe of the present invention;

[0025] Figure 7 It is a fifth internal structure schematic diagram of the smoke exhaust pipe of the present invention;

[0026] Figure 8 is a sixth internal structure schematic diagram of the smoke exhaust pipe of the present invention;

[0027] Fig. 9 The present invention Figure 3 Enlarged view of point A in the middle;

[0028] Fig.10 The present invention Figure 4 Enlarged view of point B in the middle;

[0029] Fig.11 The present invention Figure 5 Enlarged view of point C in the middle;

[0030] Fig.12 The present invention Figure 6 Enlarged view of point D in the middle;

[0031] Fig.13 The present invention Figure 6 Enlarged view of point E in the middle;

[0032] Fig.14 The present invention Figure 7 Enlarged view of the M in the middle;

[0033] Fig.15 The present invention Figure 8 Enlarged view of point N in the middle.

[0034] In the figure: 1, smoke exhaust pipe; 2, mounting mechanism; 201, adjustment plate; 202, screw hole; 203, mounting member; 204, mounting hole; 205, locking screw; 3, first dust screen; 301, first fixing ring; 302, first fixing screw; 4, second dust screen; 401, second fixing ring; 402, second fixing screw; 5, driving motor; 6, positioning cylinder; 7, rotating cylinder; 701, rotating rod; 8, sealing cover; 9, blade; 90 1. Fixed base; 902. Positioning screw; 10. First scraping mechanism; 1001. First scraping plate; 1002. First scraping; 11. Second scraping mechanism; 1101. Second scraping plate; 1102. Second scraping; 12. Adjusting mechanism; 1201. Fixed plate; 1202. Transmission rod; 1203. Center bevel gear; 1204. Planetary bevel gear; 1205. Rotating shaft; 1206. Servo motor; 1207. Battery. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0036] Example 1: Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.14 , Fig.15As shown, a smoke exhaust and fire prevention device for air conditioning with filtering and purifying functions comprises a smoke exhaust pipe 1, which is installed on the upper part of the building. The smoke exhaust pipe 1 adopts a cylindrical cavity structure with openings at both ends. One end of the smoke exhaust pipe 1 is opened and communicated with the outside of the building, and the other end of the smoke exhaust pipe 1 is opened and communicated with the inside of the building. A rotating drum 7 is arranged at the center of the smoke exhaust pipe 1. The rotating drum 7 adopts a cylindrical cavity structure with one end open and the other end sealed. A sealing cover 8 is fixedly installed on the front side of the rotating drum 7 by screws. The sealing cover 8 adopts a conical structure. The conical structure can reduce the obstruction of thick smoke, thereby improving the smoke exhaust efficiency. A plurality of blades 9 are arranged on the outer circumference of the rotating drum 7 at equal intervals. In this embodiment, eight blades 9 are arranged, and the specific number can be flexibly adjusted according to the process. The eight blades 9 can be made of resin or metal. The surfaces of the eight blades 9 have a certain curvature to improve the smoke exhaust effect. The interior of the drum 7 is provided with an adjusting mechanism 12 for driving the eight blades 9 to rotate at the same time. The adjusting mechanism 12 includes eight rotating shafts 1205 that rotate and penetrate the side walls of the drum 7. One end of the eight blades 9 is fixedly provided with a fixed base 901 that cooperates with one end of the rotating shaft 1205. The fixed base 901 is fixedly connected to one end of the rotating shaft 1205 by a positioning screw 902. When in use, the positioning screw 902 is used to facilitate the removal of the fixed base 901 from one end of the rotating shaft 1205, so that the blades 9 can be removed for replacement. When one of the blades 9 is damaged, only the corresponding blade 9 needs to be replaced. The other end of the rotating shaft 1205 is fixedly sleeved with a planetary bevel gear 1204 located inside the rotating drum 7, and the inner side of the rotating drum 7 is rotatably provided with a central bevel gear 1203 that meshes with the eight planetary bevel gears 1204 at the same time, and the central fixed sleeve of the central bevel gear 1203 is provided with a transmission rod 1202, and one end of the transmission rod 1202 is rotatably provided with a fixing plate 1201 fixedly connected to the rotating drum 7, and the central bevel gear 1203 can be limited by the transmission rod 1202 and the fixing plate 1201 to prevent the central bevel gear 1203 from shaking during the rotation process and affecting the transmission, and a servo motor 1206 that drives the central bevel gear 1203 to rotate is horizontally fixedly provided at the inner bottom of the rotating drum 7, and the servo motor 1206 can drive the central bevel gear 1203 to rotate The gear 1203 rotates a certain angle and is fixed at the corresponding angle. The servo motor 1206 can be controlled wirelessly, that is, a controller (not shown in the figure) is arranged on the servo motor 1206, and the controller on the servo motor 1206 is connected to a controller on the ground (not shown in the figure) by wireless. A battery 1207 electrically connected to the servo motor 1206 is arranged on the inner side of the rotating drum 7. The battery 1207 can be charged, and the battery 1207 can supply power to the servo motor 1206. When in use, the servo motor 1206 is operated by a person operating the controller on the ground, thereby driving the central bevel gear 1203 to rotate, thereby causing the eight planetary bevel gears 1204 meshing on one side of the central bevel gear 1203 to rotate at the same time.The rotating shaft 1205 at the center of the eight planetary bevel gears 1204 rotates, so that the blades 9 at one end of the rotating shaft 1205 rotate a certain angle. When the smoke exhaust device is not in use, the opening size of the eight blades 9 can be adjusted (that is, the eight blades 9 are equivalent to valves), thereby adjusting the ventilation area of ​​the smoke exhaust pipe 1. The eight blades 9 can also be rotated 180° to change the ventilation direction, that is, to supply air to the building. The central bevel gear 1203 can also be driven to rotate continuously by the servo motor 1206, thereby controlling the planetary bevel gears 1204 and the rotating shaft 1205. The transmission effect drives the eight blades 9 to rotate continuously on the outside of the drum 7, so that the dust on the surface of the blades 9 can be thrown out and separated, and there is no need for personnel to manually clean the blades 9. A driving motor 5 for driving the drum 7 to rotate is fixedly arranged on the inside of the smoke exhaust pipe 1. When in use, the driving motor 5 can drive the drum 7 to rotate, and then drive the eight blades 9 on the outside of the drum 7 to rotate, so that both sides of the smoke exhaust pipe 1 can be ventilated. When a fire occurs inside the building, the thick smoke inside the building can be discharged, and the smoke exhaust efficiency can be adjusted by adjusting the rotation angle of the blades 9.

[0037] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 , Fig.11 , Fig.13 , Fig.14As shown, a rotating rod 701 is fixedly arranged horizontally at the rear center of the rotating drum 7, and a positioning cylinder 6 fixedly connected to the inner wall of the smoke exhaust pipe 1 is rotatably sleeved on the rotating rod 701. The positioning cylinder 6 can make the rotating rod 701 rotate stably, and then the rotating drum 7 at one end of the rotating rod 701 can rotate stably, so as to avoid the shaking of the rotating drum 7 during the rotation process, which affects the smoke exhaust effect. The output end of the driving motor 5 is fixedly connected to one end of the rotating rod 701, and the inner side of the smoke exhaust pipe 1 is provided with a first scraping mechanism 10 that cooperates with the edge of one side of a plurality of blades 9. The first scraping mechanism 10 includes A first scraper plate 1001 is fixedly arranged on the inner side of the smoke exhaust pipe 1 by screws, and the bottom of the first scraper plate 1001 is detachably mounted on the smoke exhaust pipe 1 by screws, so as to facilitate replacement of the first scraper plate 1001 and improve the scraping effect of the blades. A plurality of first scraping bristles 1002 cooperating with the front edge of the blade 9 are fixedly arranged on one side of the first scraper plate 1001, and a second scraper mechanism 11 cooperating with the other side edge of the plurality of blades 9 is arranged on the inner side of the smoke exhaust pipe 1. The second scraper mechanism 11 includes a second scraper plate 1101 fixedly arranged on the inner side of the smoke exhaust pipe 1 by screws, and a second The bottom of the scraper plate 1101 is detachably mounted with the smoke exhaust pipe 1 by screws, so that the second scraper plate 1101 can be easily replaced to improve the scraping effect of the blades. A plurality of second scrapers 1102 cooperating with the rear edge of the blade 9 are fixedly arranged on one side of the second scraper plate 1101. When the acute angle between the blade 9 and the vertical plane is 0-30°, the edge of the blade 9 contacts the first scraper 1002 and the second scraper 1102. When in use, one side edge of the blade 9 will fit with the first scraper 1002, and the other side edge of the blade 9 will fit with the second scraper 1102. As the blade 9 rotates with the drum 7, the dust adhered to the edges of both sides of the blade 9 can be cleaned by the first scraper 1002 and the second scraper 1102, and the blade 9 can also be rotated on the outside of the drum 7 by the servo motor 1206, the center bevel gear 1203, the planetary bevel gear 1204 and the rotating shaft 1205. During the rotation, the blade 9 can also cooperate with the first scraper 1002 and the second scraper 1102, so that the dust on the blade 9 can be cleaned from multiple angles, thereby improving the dust cleaning effect and further improving the smoke exhaust effect.

[0038] Embodiment 2: Based on embodiment 1, further improvement is made in that Figure 1 , Figure 2As shown, a plurality of mounting mechanisms 2 are equidistantly arranged on the outer circumference of the smoke exhaust pipe 1, and the mounting mechanism 2 includes an adjusting plate 201 fixedly arranged on the outer side of the smoke exhaust pipe 1, a plurality of screw holes 202 are provided on the adjusting plate 201, mounting members 203 are detachably mounted on both ends of the adjusting plate 201, the mounting members 203 are connected to the screw holes 202 by locking screws 205, mounting holes 204 are provided on the mounting members 203, and long bolts (not shown in the figure) that match the building are provided on the mounting holes 204. When in use, the mounting member 203 is fixed to the building by passing the long bolts through the mounting holes 204, so that the adjusting plate 201 on one side of the mounting member 203 and the smoke exhaust pipe 1 can be fixed to the building, and during the installation process, the distance between the two mounting members 203 on the same adjusting plate 201 can be adjusted by adjusting the locking screws 205 to connect with different screw holes 202, so that the smoke exhaust pipe 1 can be installed on buildings of different thicknesses.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a first fixing ring 301 is fixedly provided at one end of the inner side of the smoke exhaust pipe 1, and a first dust-proof net 3 is fixedly installed on one side of the first fixing ring 301 by a first fixing screw 302. A second fixing ring 401 is fixedly provided at the other end of the inner side of the smoke exhaust pipe 1, and a second dust-proof net 4 is fixedly installed on one side of the second fixing ring 401 by a second fixing screw 402. When in use, the first dust-proof net 3 is fixed to one side of the first fixing ring 301 by the first fixing screw 302, and the second dust-proof net 4 is fixed to one side of the second fixing ring 401 by the second fixing screw 402. The first dust-proof net 3 and the second dust-proof net 4 are conveniently fixed on the two ends of the inner side of the smoke exhaust pipe 1 for easy replacement. The first dust-proof net 3 and the second dust-proof net 4 can be used to filter dust inside and outside the building. The first dust-proof net 3 and the second dust-proof net 4 can also prevent large particles in the thick smoke from entering the smoke exhaust pipe 1 and damaging the blades 9. Moreover, through the different wind directions of the blades 9, the dust on the outside of the first dust-proof net 3 and the second dust-proof net 4 can be blown away in the opposite direction to avoid dust blocking the mesh holes on the first dust-proof net 3 and the second dust-proof net 4, thereby improving the smoke exhaust ventilation efficiency.

[0040] It should be noted that, when the smoke exhaust and fire prevention device for air conditioning with filtering and purifying functions is in use, the mounting member 203 is fixed to the building by passing a long bolt through the mounting hole 204, so that the adjustment plate 201 on one side of the mounting member 203 and the smoke exhaust pipe 1 can be fixed to the building. When there is no fire, the central bevel gear 1203 can be driven to rotate by the servo motor 1206, so that the eight planetary bevel gears 1204 meshing on one side of the central bevel gear 1203 can rotate at the same time, so that the rotating shaft 1205 at the center of the eight planetary bevel gears 1204 rotates, and the blades 9 at one end of the rotating shaft 1205 rotate a certain angle, so that the internal ventilation size of the smoke exhaust pipe 1 can be adjusted. During the ventilation process, the driving motor 5 can also drive the rotating drum 7 to rotate, and then drive the eight blades 9 on the outer side of the rotating drum 7 to rotate, so that The two sides of the smoke exhaust pipe 1 are ventilated, and the wind direction can be adjusted by adjusting the angle of the blade 9, thereby improving the practicality of the device. When a fire occurs, the driving motor 5 can drive the drum 7 to rotate, and then drive the eight blades 9 on the outside of the drum 7 to rotate, so that the thick smoke inside the building is discharged through the smoke exhaust pipe 1. During the discharge process, the thick smoke can be filtered through the first dustproof net 3 to prevent the thick smoke and dust from polluting the air. During the smoke exhaust process, the blade 9 can also be driven by the drum 7 to rotate. One side edge of the blade 9 will fit with the first scraper 1002, and the other side edge of the blade 9 will fit with the second scraper 1102. Therefore, when the blade 9 rotates with the drum 7, the dust adhered to the two side edges of the blade 9 can be cleaned by the first scraper 1002 and the second scraper 1102, thereby improving the smoke exhaust effect.

[0041] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A smoke exhaust and fire prevention device for air conditioning with filtering and purification functions, comprising a smoke exhaust pipe (1), characterized in that: A rotating drum (7) is rotatably arranged at the center of the smoke exhaust pipe (1), and a plurality of blades (9) are rotatably arranged at equal intervals on the outer circumference of the rotating drum (7). An adjusting mechanism (12) for driving the plurality of blades (9) to rotate simultaneously is arranged inside the rotating drum (7). A driving motor (5) for driving the rotating drum (7) to rotate is fixedly arranged on the inner side of the smoke exhaust pipe (1). A first scraping mechanism (10) cooperating with one side edge of the plurality of blades (9) is arranged on the inner side of the smoke exhaust pipe (1), and a second scraping mechanism (11) cooperating with the other side edge of the plurality of blades (9) is arranged on the inner side of the smoke exhaust pipe (1). A plurality of mounting mechanisms (2) are equidistantly arranged on the outer circumference of the smoke exhaust pipe (1).

2. The smoke exhaust and fire prevention device for air conditioning with filtering and purification function according to claim 1, characterized in that: The regulating mechanism (12) comprises a plurality of rotating shafts (1205) which rotatably penetrate the side wall of the rotating drum (7); one end of the rotating shafts (1205) is fixedly connected to the blades (9); the other ends of the plurality of rotating shafts (1205) are fixedly sleeved with planetary bevel gears (1204) located inside the rotating drum (7); a central bevel gear (1203) which meshes with the plurality of planetary bevel gears (1204) is rotatably arranged inside the rotating drum (7); a servo motor (1206) which drives the central bevel gear (1203) to rotate is horizontally fixedly arranged at the bottom of the inner side of the rotating drum (7); and a storage battery (1207) which is electrically connected to the servo motor (1206) is arranged inside the rotating drum (7).

3. The smoke exhaust and fire prevention device for air conditioning with filtering and purification function according to claim 2, characterized in that: The central fixed sleeve of the central bevel gear (1203) is provided with a transmission rod (1202), one end of which is rotatably provided with a fixing plate (1201) fixedly connected to the rotating drum (7), and a sealing cover (8) is fixedly installed on the front side of the rotating drum (7) by means of screws.

4. The smoke exhaust and fire prevention device for air conditioning with filtering and purification function according to claim 2, characterized in that: A fixed base (901) matched with one end of the rotating shaft (1205) is fixedly provided at one end of the plurality of blades (9), and the fixed base (901) is fixedly connected to one end of the rotating shaft (1205) via a positioning screw (902).

5. The smoke exhaust and fire prevention device for air conditioning with filtering and purification function according to claim 1, characterized in that: The first scraping mechanism (10) comprises a first scraping plate (1001) fixedly arranged on the inner side of the smoke exhaust pipe (1) by means of screws, and a plurality of first scraping bristles (1002) cooperating with the front edge of the blade (9) are fixedly arranged on one side of the first scraping plate (1001).

6. The smoke exhaust and fire prevention device for air conditioning with filtering and purification function according to claim 1, characterized in that: The second scraping mechanism (11) comprises a second scraping plate (1101) fixedly arranged on the inner side of the smoke exhaust pipe (1) by means of screws, and a plurality of second scraping bristles (1102) cooperating with the rear edge of the blade (9) are fixedly arranged on one side of the second scraping plate (1101).

7. The smoke exhaust and fire prevention device for air conditioning with filtering and purification function according to claim 1, characterized in that: A rotating rod (701) is fixedly arranged horizontally at the rear center of the rotating cylinder (7), and a positioning cylinder (6) fixedly connected to the inner wall of the smoke exhaust pipe (1) is rotatably sleeved on the rotating rod (701), and the output end of the driving motor (5) is fixedly connected to one end of the rotating rod (701).

8. The smoke exhaust and fire prevention device for air conditioning with filtering and purification function according to claim 1, characterized in that: A first fixing ring (301) is fixedly provided at one end of the inner side of the smoke exhaust pipe (1), and a first dustproof net (3) is fixedly mounted on one side of the first fixing ring (301) via a first fixing screw (302).

9. The smoke exhaust and fire prevention device for air conditioning with filtering and purification function according to claim 8, characterized in that: A second fixing ring (401) is fixedly provided at the other inner end of the smoke exhaust pipe (1), and a second dustproof net (4) is fixedly installed on one side of the second fixing ring (401) via a second fixing screw (402).

10. A smoke exhaust and fire prevention device for air conditioning with filtering and purification functions according to any one of claims 1 to 9, characterized in that: The mounting mechanism (2) comprises an adjustment plate (201) fixedly arranged on the outside of the smoke exhaust pipe (1), a plurality of screw holes (202) being provided on the adjustment plate (201), mounting parts (203) being detachably mounted at both ends of the adjustment plate (201), the mounting parts (203) being connected to the screw holes (202) via locking screws (205), and mounting holes (204) being provided on the mounting parts (203).

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