阅读说明：本技术 一种管路连接的智能型工业风机 (Intelligent industrial fan of pipe connection ) 是由 苏凤均 柴博易 谢怡 于 2021-08-16 设计创作，主要内容包括：本发明公开了一种管路连接的智能型工业风机,包括安装管和连接在安装管两侧的管道,所述安装管的内壁固定有过滤网,所述安装管靠近过滤网的内壁固定有两个轴承板,两个所述轴承板的轴心共同转动安装有转动轴,所述过滤网的外壁开设有供转动轴穿过的通孔,所述转动轴穿过过滤网的一端固定有扇叶,位于两个所述轴承板之间的转动轴外壁固定有圆台块,所述安装管的内壁还安装有用于驱动圆台块转动的驱动机构,所述驱动机构包括电机,所述电机固定在安装管的内壁。本发明通过结构之间的配合,达到了随着烟雾浓度提高的同时,提高扇叶转速的效果,从而提高烟雾的排放速度,进而达到了自适应调节扇叶转速的效果。(The invention discloses an intelligent industrial fan connected by a pipeline, which comprises an installation pipe and pipelines connected to two sides of the installation pipe, wherein a filter screen is fixed on the inner wall of the installation pipe, two bearing plates are fixed on the inner wall of the installation pipe close to the filter screen, the axes of the two bearing plates are jointly and rotatably provided with a rotating shaft, the outer wall of the filter screen is provided with a through hole for the rotating shaft to pass through, one end of the rotating shaft passing through the filter screen is fixedly provided with a fan blade, a circular table block is fixed on the outer wall of the rotating shaft between the two bearing plates, the inner wall of the installation pipe is also provided with a driving mechanism for driving the circular table block to rotate, the driving mechanism comprises a motor, and the motor is fixed on the inner wall of the installation pipe. According to the invention, through the matching of the structures, the effect of increasing the rotating speed of the fan blade while increasing the smoke concentration is achieved, so that the smoke discharge speed is increased, and the effect of adaptively adjusting the rotating speed of the fan blade is achieved.)

1. The utility model provides an intelligent industrial fan of coupling of pipeline, is including installation pipe (1) and pipeline (2) of connection in installation pipe (1) both sides, its characterized in that: the inner wall of the installation pipe (1) is fixedly provided with a filter screen (11), the inner wall of the installation pipe (1) close to the filter screen (11) is fixedly provided with two bearing plates (20), the axes of the two bearing plates (20) rotate together to install a rotating shaft (10), the outer wall of the filter screen (11) is provided with a through hole for the rotating shaft (10) to pass through, one end of the rotating shaft (10) passing through the filter screen (11) is fixedly provided with a fan blade (13), the outer wall of the rotating shaft (10) between the two bearing plates (20) is fixedly provided with a circular platform block (24), and the inner wall of the installation pipe (1) is further provided with a driving mechanism for driving the circular platform block (24) to rotate;

the driving mechanism comprises a motor (15), the motor (15) is fixed on the inner wall of the installation pipe (1), a spline shaft (17) is fixed at one end of an output shaft of the motor (15), a cone head (19) is fixed at one end, far away from the motor (15), of the spline shaft (17), the outer wall of the cone head (19) is in contact with the outer wall of the circular table block (24), a blocking disc (16) is fixed on the outer wall of the spline shaft (17), and a first spring (18) sleeved on the outer surface of the spline shaft (17) is fixed between the blocking disc (16) and the cone head (19);

the smoke-free filter is characterized by further comprising a touch mechanism for driving the circular table block (24) to move left and right, and when the smoke concentration in the installation pipe (1) is high to a certain degree, the touch mechanism can drive the circular table block (24) to move towards a direction far away from the filter screen (11).

2. The intelligent industrial fan of pipe connection of claim 1, wherein: still including being used for carrying out clear clean mechanism to filter screen (11), clean mechanism includes swivel becket (9), swivel becket (9) rotates and installs the outer wall in filter screen (11) through-hole department, and the cover is in the periphery of axis of rotation (10), the outer wall of swivel becket (9) is fixed with sliding sleeve (8), the inner wall slidable mounting of sliding sleeve (8) has telescopic link (7), the outer wall that telescopic link (7) are close to filter screen (11) is fixed with brush (6), be connected with second spring (28) between telescopic link (7) and sliding sleeve (8), axis of rotation (10) outer wall between flabellum (13) and swivel becket (9) is fixed with inserted block (14), the inner wall of swivel becket (9) is seted up and is supplied inserted block (14) male slot (27), the outer wall that the axle center was kept away from to filter screen (11) is fixed with spacing ring (5), the inner wall of spacing ring (5) is seted up a plurality of one-way cambered surfaces that thicken gradually, the one end that sliding sleeve (8) were kept away from in telescopic link (7) contacts with the cambered surface of spacing ring (5).

3. The intelligent industrial fan of pipe connection of claim 2, wherein: the dust box is characterized in that a dust box (3) is fixed on the outer wall, close to the limiting ring (5), of the mounting pipe (1), the dust box (3) is communicated with the mounting pipe (1), and a sealing cover (4) is detachably mounted at the bottom of the dust box (3).

4. The intelligent industrial fan of claim 3, wherein: one of them the outer wall of bearing plate (20) is fixed with piston assembly (30), the one end of piston assembly (30) is fixed with contact block (25), and another the outer wall of bearing plate (20) is fixed with trigger switch (26), the inner wall of laying dust case (3) is fixed with adsorption plate (12), contact block (25) can make adsorption plate (12) circular telegram and subsidiary static through circuit control after trigger switch (26) contact.

5. The intelligent industrial fan of pipe connection of claim 2, wherein: the touch mechanism comprises an air cylinder (23), the air cylinder (23) is fixed on the outer wall, close to a circular table block (24), of one bearing plate (20), an arc-shaped block (22) is fixed on the output end of the air cylinder (23), an annular groove (21) is formed in the outer wall of the circular table block (24), the arc-shaped end of the arc-shaped block (22) is inserted into the annular groove (21), a smoke sensor (29) is fixed on the outer wall of the limiting ring (5), and when the smoke sensor (29) detects that the smoke concentration in the installation pipe (1) reaches a certain amount, the air cylinder (23) is controlled to be started through a circuit.

6. The intelligent industrial fan of pipe connection of claim 2, wherein: the slots (27) are provided with a plurality of slots and are distributed in a circumferential array around the axis of the rotating shaft (10).

7. The intelligent industrial fan of pipe connection of claim 1, wherein: the outer walls of the contact surfaces of the conical head (19) and the circular truncated cone block (24) are rough surfaces.

8. The intelligent industrial fan of pipe connection of claim 2, wherein: the rotating ring (9) is rotatably arranged on the outer wall of the filter screen (11) through a rotating bearing.

Technical Field

The invention relates to the technical field of industrial fans, in particular to an intelligent industrial fan connected through a pipeline.

Background

A duct fan is a ventilation device, generally installed in a duct or placed in a wall, and ventilates an area where the duct or the wall communicates by transferring air in the duct or the wall.

When the existing pipeline industrial fan is used, the existing pipeline industrial fan is generally used for discharging smoke, but when the smoke is more, the wind strength of the fan cannot be automatically adjusted, so that the smoke cannot be rapidly discharged, and potential safety hazards caused by the fact that the smoke cannot be discharged timely can be further caused.

In view of this, the invention provides an intelligent industrial fan connected by a pipeline.

Disclosure of Invention

The invention aims to provide an intelligent industrial fan connected by a pipeline, which achieves the effect of increasing the rotating speed of fan blades while increasing the smoke concentration, thereby increasing the emission speed of smoke, further achieving the effect of adaptively adjusting the rotating speed of the fan blades, and solving the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an intelligent industrial fan of pipe connection, is including installation pipe and the pipeline of connection in installation pipe both sides, the inner wall of installation pipe is fixed with the filter screen, the inner wall that the installation pipe is close to the filter screen is fixed with two bearing plates, two the axis of rotation is installed in the common rotation in axle center of bearing plate, the through-hole that supplies the axis of rotation to pass is seted up to the outer wall of filter screen, the one end that the filter screen was passed to the axis of rotation is fixed with the flabellum, is located two axis of rotation outer wall between the bearing plate is fixed with the round platform piece, the inner wall of installation pipe is still installed and is used for driving round platform piece pivoted actuating mechanism.

The driving mechanism comprises a motor, the motor is fixed on the inner wall of the installation pipe, a spline shaft is fixed at one end of an output shaft of the motor, a cone head is fixed at one end, away from the motor, of the spline shaft, the outer wall of the cone head is in contact with the outer wall of the truncated cone block, a blocking disc is fixed on the outer wall of the spline shaft, and a first spring, which is sleeved on the outer surface of the spline shaft, is fixed between the blocking disc and the cone head.

The smoke concentration in the installation pipe is high to a certain degree, and the circular table block can be driven to move towards the direction far away from the filter screen through the touch mechanism.

Preferably, still including being used for carrying out clear clean mechanism to the filter screen, clean mechanism includes the swivel becket, the swivel becket rotates and installs the outer wall in filter screen through-hole department, and overlaps in the periphery of axis of rotation, the outer wall of swivel becket is fixed with the sliding sleeve, the inner wall slidable mounting of sliding sleeve has the telescopic link, the outer wall that the telescopic link is close to the filter screen is fixed with the brush, be connected with the second spring between telescopic link and the sliding sleeve, axis of rotation outer wall between flabellum and the swivel becket is fixed with the inserted block, the inner wall of swivel becket has been seted up and has been supplied inserted block male slot, the outer wall that the axle center was kept away from to the filter screen is fixed with the spacing ring, the inner wall of spacing ring has been seted up the thickening cambered surface of a plurality of one-way thickenings gradually, the one end that the sliding sleeve was kept away from to the telescopic link contacts with the cambered surface of spacing ring.

Preferably, the outer wall of the mounting pipe close to the limiting ring is fixedly provided with a dust box, the dust box is communicated with the mounting pipe, and the bottom of the dust box is detachably provided with a sealing cover.

Preferably, one of them the outer wall of bearing plate is fixed with piston assembly, piston assembly's one end is fixed with the contact piece, and another the outer wall of bearing plate is fixed with trigger switch, the inner wall of dust collecting box is fixed with the adsorption plate, contact piece and trigger switch contact back can make adsorption plate circular telegram and subsidiary static through circuit control.

Preferably, the actuating mechanism includes the cylinder, the cylinder is fixed at one of them bearing plate and is close to the outer wall of round platform piece, the output of cylinder is fixed with the arc piece, the ring channel has been seted up to the outer wall of round platform piece, the arc end of arc piece inserts in the ring channel, the outer wall of spacing ring is fixed with smoke transducer, can start through circuit control cylinder when smoke transducer detects the intraductal smog concentration of installation to a certain amount.

Preferably, the plurality of slots are arranged and distributed in a circumferential array around the axis of the rotating shaft.

Preferably, the outer walls of the contact surfaces of the conical head and the circular truncated cone are rough surfaces.

Preferably, the rotating ring is rotatably mounted on the outer wall of the filter screen through a rotating bearing.

Compared with the prior art, the invention has the following beneficial effects:

firstly, the driving mechanism and the touch mechanism are arranged, when the smoke concentration in the installation pipe is high to a certain degree, the circular truncated cone block is driven to move through the touch mechanism, so that the effect of increasing the rotating speed of the fan blades while increasing the smoke concentration is achieved, the emission speed of the smoke is increased, and the effect of adaptively adjusting the rotating speed of the fan blades is achieved.

By arranging the cleaning mechanism and matching the structures, when the smoke concentration in the installation pipe is high to a certain degree, the filter screen is cleaned by the cleaning mechanism, so that the filter holes of the filter screen are prevented from being blocked by impurity dust in the smoke, a self-cleaning effect can be achieved on the hairbrush, and the filter screen is prevented from being influenced by excessive dust on the hairbrush.

Third, through the arrangement of the piston assembly, the contact block, the trigger switch and the adsorption plate, and through the matching of the structures, when the smoke concentration in the installation pipe is too high, the temperature in the installation pipe can be increased due to the temperature carried in the smoke, so that the piston assembly is heated and expanded, then the telescopic rod of the piston assembly extends out, the contact block is driven to move and is in contact with the trigger switch, at the moment, the adsorption plate can be electrified and carry static electricity through circuit control, at the moment, the scraped and shaken dust can be adsorbed on the adsorption plate due to the static electricity, and the scraped dust and impurities can be prevented from being attached to the filter screen again.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a side cross-sectional perspective view of the mounting tube of the present invention;

FIG. 3 is a front cross-sectional perspective view of the mounting tube of the present invention;

FIG. 4 is a schematic perspective view of the left side of FIG. 3;

FIG. 5 is an enlarged perspective view of the turning block according to the present invention;

fig. 6 is a schematic cross-sectional perspective view of fig. 5 of the present invention.

In the figure: 1. installing a pipe; 2. a pipeline; 3. a dust accumulation box; 4. a sealing cover; 5. a limiting ring; 6. a brush; 7. a telescopic rod; 8. a sliding sleeve; 9. a rotating ring; 10. a rotating shaft; 11. a filter screen; 12. an adsorption plate; 13. a fan blade; 14. inserting a block; 15. a motor; 16. a catch tray; 17. a spline shaft; 18. a first spring; 19. a conical head; 20. a bearing plate; 21. an annular groove; 22. an arc-shaped block; 23. a cylinder; 24. a round table block; 25. a contact block; 26. a trigger switch; 27. a slot; 28. a second spring; 29. a smoke sensor; 30. a piston assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides an intelligent industrial fan of pipe connection, including installation pipe 1 and the pipeline 2 of connection in installation pipe 1 both sides, the inner wall of installation pipe 1 is fixed with filter screen 11, the inner wall that installation pipe 1 is close to filter screen 11 is fixed with two bearing plates 20, the axis of rotation 10 is installed in the common rotation in axle center of two bearing plates 20, the through-hole that supplies axis of rotation 10 to pass is seted up to filter screen 11's outer wall, the one end that filter screen 11 was passed to axis of rotation 10 is fixed with flabellum 13, the axis of rotation 10 outer wall that is located between two bearing plates 20 is fixed with round platform piece 24, the inner wall of installation pipe 1 still installs and is used for driving round platform piece 24 pivoted actuating mechanism.

The driving mechanism comprises a motor 15, the motor 15 is fixed on the inner wall of the installation pipe 1, a spline shaft 17 is fixed at one end of an output shaft of the motor 15, a cone head 19 is fixed at one end, away from the motor 15, of the spline shaft 17, the outer wall of the cone head 19 is in contact with the outer wall of the circular truncated cone block 24, a blocking disc 16 is fixed on the outer wall of the spline shaft 17, and a first spring 18 sleeved on the outer surface of the spline shaft 17 is fixed between the blocking disc 16 and the cone head 19.

The smoke purifier also comprises a touch mechanism for driving the circular table block 24 to move left and right, and when the smoke concentration in the installation pipe 1 is high to a certain degree, the touch mechanism drives the circular table block 24 to move towards a direction far away from the filter screen 11.

The two sides of the installation pipe 1 are connected with the pipeline 2, then the motor 15 is started, the output shaft of the motor 15 can drive the spline shaft 17 to rotate when rotating, and simultaneously drive the baffle disc 16 fixed on the spline shaft and the cone head 19 to rotate together, because the cone head 19 can be tightly attached to the circular truncated cone block 24 under the action of the elastic force of the first spring 18, then the circular truncated cone block 24 is driven to rotate through friction, so as to drive the rotating shaft 10 to rotate, and further drive the fan blades 13 to rotate, so as to suck air and ventilate in the pipeline 2, when the smoke concentration in the installation pipe 1 is high to a certain degree, the trigger mechanism drives the circular truncated cone block 24 to move towards the direction far away from the filter screen 11, at the moment, the cone head 19 can be kept in contact with the inclined plane of the circular truncated cone block 24 under the action of the elastic force of the first spring 18, but the contact diameter with the circular truncated cone block 24 is also reduced, and simultaneously, the rotating speed of the circular truncated cone block 24 is driven to be increased, therefore, the rotating speed of the fan blades 13 is increased, the effect of increasing the rotating speed of the fan blades 13 along with the increase of the smoke concentration is achieved, and the smoke discharge speed is increased.

Further, still including being used for carrying out clear clean mechanism to filter screen 11, clean mechanism includes swivel 9, swivel 9 rotates the outer wall of installing in filter screen 11 through-hole department, and the cover is in the periphery of axis of rotation 10, swivel 9's outer wall is fixed with sliding sleeve 8, sliding sleeve 8's inner wall slidable mounting has telescopic link 7, telescopic link 7 is close to filter screen 11's outer wall and is fixed with brush 6, be connected with second spring 28 between telescopic link 7 and the sliding sleeve 8, 10 outer walls of axis of rotation between flabellum 13 and the swivel 9 are fixed with inserted block 14, supply inserted block 14 male slot 27 is seted up to swivel 9's inner wall, the outer wall that filter screen 11 kept away from the axle center is fixed with spacing ring 5, the cambered surface of a plurality of one-way thickens gradually is seted up to spacing ring 5's inner wall, the one end that sliding sleeve 8 was kept away from to telescopic link 7 contacts with the cambered surface of spacing ring 5.

When the smoke concentration in the installation pipe 1 is high to a certain degree, the dust and impurities in the smoke can be increased, the rotary shaft 10 can be driven to move together when the circular table block 24 moves, the inserting block 14 fixed on the outer wall of the rotary shaft 10 can also be inserted into the inserting groove 27 formed in the rotary ring 9 when the rotary shaft 10 moves, at the moment, the rotary shaft 10 can drive the rotary ring 9 to rotate due to the clamping effect between the inserting block 14 and the inserting groove 27, then the rotary ring 9 drives the sliding sleeve 8 and the telescopic rod 7 to rotate together circumferentially, then the surface of the filter screen 11 is scraped and cleaned through the hairbrush 6, the filter holes of the filter screen 11 are prevented from being blocked by the impurity dust in the smoke, meanwhile, the filter effect of the filter screen 11 on the smoke is improved, when the telescopic rod 7 rotates circumferentially, the tail end of the telescopic rod 7 can slide along the cambered surface of the limiting ring 5, and the second spring 28 is compressed, and when the telescopic link 7 slides to the end of cambered surface, at this moment, telescopic link 7 can break away from the cambered surface in the twinkling of an eye, and the second spring 28 of compression this moment can release elastic potential energy in the twinkling of an eye, make telescopic link 7 outwards remove, strike the inner wall at spacing ring 5 simultaneously, strike the striking to spacing ring 5 through telescopic link 7, thereby can conduct on the filter screen 11, produce the effect of a vibrations to filter screen 11, can carry out the effect of a vibrations with dust and impurity on it, can also make brush 6 brush but the dust that does not fall shakes simultaneously, telescopic link 7 strikes spacing ring 5 simultaneously also can produce a vibrations effect to brush 6, shake off the dust that is attached to on brush 6, prevent that the dust that is stained with on the brush 6 is too much and influence the clean effect to filter screen 11.

Further, the outer wall that installation pipe 1 is close to spacing ring 5 is fixed with laying dust box 3, is linked together between laying dust box 3 and the installation pipe 1, and detachable mounting has sealed lid 4 in the bottom of laying dust box 3, and the dust and the impurity that brush or shake off can fall into the laying dust box 3 of below and collect, prevent that the dust from piling up in installation pipe 1 and influencing the ventilation effect.

Further, a piston assembly 30 is fixed on the outer wall of one of the bearing plates 20, a contact block 25 is fixed at one end of the piston assembly 30, a trigger switch 26 is fixed on the outer wall of the other bearing plate 20, an adsorption plate 12 is fixed on the inner wall of the dust collection box 3, and after the contact block 25 is contacted with the trigger switch 26, the adsorption plate 12 is electrified and attached with static electricity through circuit control.

When the smoke concentration in the installation pipe 1 is too high, dust and foreign particles carried in the smoke correspondingly increase, the rotating speed of the fan blades 13 can be adjusted along with the structure, so that the air flow rate in the installation pipe 1 is increased, the dust and the foreign particles shaken off the brush 6 can be attached to the filter screen 11 again due to the excessively high air flow rate when falling, the cleaning effect on the filter screen 11 cannot be achieved, at the moment, the temperature in the installation pipe 1 can be increased due to the increase of the smoke concentration, the piston assembly 30 is heated and expanded, then the telescopic rod of the piston assembly 30 extends out, the contact block 25 is driven to move and is contacted with the trigger switch 26, at the moment, the adsorption plate 12 is electrified and carries static electricity through circuit control, and the scraped and shaken off dust can be adsorbed on the adsorption plate 12 due to the static electricity, can prevent that the dust and the impurity of scraping from attaching to filter screen 11 once more to reached when smog concentration is too big, can also play and carry out clear effect to filter screen 11, improved carminative speed simultaneously, and then improved ventilation effect.

Further, the triggering mechanism comprises an air cylinder 23, the air cylinder 23 is fixed on the outer wall of one of the bearing plates 20 close to the circular table block 24, an arc-shaped block 22 is fixed on the output end of the air cylinder 23, an annular groove 21 is formed in the outer wall of the circular table block 24, the arc-shaped end of the arc-shaped block 22 is inserted into the annular groove 21, a smoke sensor 29 is fixed on the outer wall of the limiting ring 5, and when the smoke sensor 29 detects that the smoke concentration in the installation pipe 1 reaches a certain amount, the air cylinder 23 is controlled to be started through a circuit.

When the smog concentration in pipeline 2 reaches the certain degree, smog sensor 29 response back can start through circuit control cylinder 23 this moment, then cylinder 23's telescopic link can outwards stretch out, drive arc piece 22 simultaneously and remove, because arc piece 22 inserts in ring channel 21, so arc piece 22 can drive round platform piece 24 and remove together, otherwise when the smog concentration in pipeline 2 reduces to the certain degree, smog sensor 29 can pass through the telescopic link withdrawal of circuit control cylinder 23, the effect of self-adaptation regulation flabellum 13 rotational speed has been reached.

Furthermore, the plurality of slots 27 are arranged and distributed in a circumferential array around the axis of the rotating shaft 10, and the insertion block 14 can be conveniently inserted into the slots 27 by arranging the plurality of slots 27.

Furthermore, the outer walls of the contact surfaces of the conical head 19 and the circular truncated cone block 24 are both rough surfaces, and friction force between the conical head 19 and the circular truncated cone block 24 can be improved by the rough surfaces, so that the transmission effect is improved.

Furthermore, the rotating ring 9 is rotatably mounted on the outer wall of the filter screen 11 through a rotating bearing, and the rotating ring 9 is mounted through the rotating bearing, so that the fluency of the rotating ring 9 during rotation can be improved.

The working principle is as follows: this pipe connection's intelligent industry fan is when using, the equal connecting tube in both sides 2 of installation pipe 1, then starter motor 15, can drive integral key shaft 17 when the output shaft of motor 15 rotates and rotate, it rotates together to drive fender dish 16 and the cone head 19 of fixing on it simultaneously, owing to can make cone head 19 closely laminate with round platform piece 24 under the spring action of first spring 18, then drive round platform piece 24 through the friction and rotate, thereby drive axis of rotation 10 and rotate, and then drive flabellum 13 and rotate, thereby ventilate breathing in to pipeline 2.

When the smoke concentration in the pipeline 2 reaches a certain degree, the smoke sensor 29 is started through the circuit control cylinder 23 after sensing, then the telescopic rod of the cylinder 23 extends outwards and drives the arc block 22 to move, because the arc block 22 is inserted into the annular groove 21, the arc block 22 drives the circular table block 24 to move together, so as to drive the rotating shaft 10 and the fan blades 13 to move together, when the circular table block 24 moves, the conical head 19 is always in contact with the inclined surface of the circular table block 24 under the elastic force of the first spring 18, but the contact diameter with the circular table block 24 is reduced, and meanwhile, the rotating speed of the circular table block 24 is driven to be increased, so that the rotating speed of the fan blades 13 is increased, and the effect of increasing the rotating speed of the fan blades 13 along with the increase of the smoke concentration is achieved, so as to increase the smoke discharge speed, otherwise, when the smoke concentration in the pipeline 2 is reduced to a certain degree, the smoke sensor 29 can control the telescopic rod of the air cylinder 23 to retract through a circuit, and the effect of adaptively adjusting the rotating speed of the fan blades 13 is achieved.

When the rotating shaft 10 moves, the inserting block 14 fixed on the outer wall of the rotating shaft 10 can also be inserted into the slot 27 formed in the rotating ring 9, at this time, the rotating shaft 10 can drive the rotating ring 9 to rotate due to the clamping action between the inserting block 14 and the slot 27, then the rotating ring 9 drives the sliding sleeve 8 and the telescopic rod 7 to rotate together circumferentially, then the surface of the filter screen 11 is scraped and cleaned through the hairbrush 6, the filter holes of the filter screen 11 are prevented from being blocked by impurity and dust in smoke, meanwhile, the filtering effect of the filter screen 11 on the smoke is improved, when the telescopic rod 7 rotates circumferentially, the tail end of the telescopic rod 7 can slide along the cambered surface of the limiting ring 5, meanwhile, the second spring 28 is compressed, when the telescopic rod 7 slides to the tail end of the cambered surface, at this time, the telescopic rod 7 can instantly separate from the cambered surface, and the compressed second spring 28 can instantly release elastic potential energy, so that the telescopic rod 7 moves outwards, strike the inner wall at spacing ring 5 simultaneously, strike spacing ring 5 through telescopic link 7, thereby can conduct on the filter screen 11, produce the effect of a vibrations to filter screen 11, can carry out the effect of a vibrations with dust and impurity on it, but can also make 6 brushes of brush but the dust that does not fall shakes off simultaneously, also can produce a vibrations effect to 6 brushes of brush when telescopic link 7 strikes spacing ring 5 simultaneously, shake off the adnexed dust on 6 brushes, prevent that the dust that is stained with on 6 brushes is too much and influence the clean effect to filter screen 11, and the dust that brushes to fall or shake off and impurity can fall into the long-pending dirt case 3 of below and collect.

When the smoke concentration in the installation pipe 1 is too high, dust and foreign particles carried in the smoke correspondingly increase, the rotating speed of the fan blades 13 can be adjusted along with the structure, so that the air flow rate in the installation pipe 1 is increased, the dust and the foreign particles shaken off the brush 6 can be attached to the filter screen 11 again due to the excessively high air flow rate when falling, the cleaning effect on the filter screen 11 cannot be achieved, at the moment, the temperature in the installation pipe 1 can be increased due to the increase of the smoke concentration, the piston assembly 30 is heated and expanded, then the telescopic rod of the piston assembly 30 extends out, the contact block 25 is driven to move and is contacted with the trigger switch 26, at the moment, the adsorption plate 12 is electrified and carries static electricity through circuit control, and the scraped and shaken off dust can be adsorbed on the adsorption plate 12 due to the static electricity, can prevent that the dust and the impurity of scraping from attaching to filter screen 11 once more to reached when smog concentration is too big, can also play and carry out clear effect to filter screen 11, improved carminative speed simultaneously, and then improved ventilation effect.

After ventilation is finished, the sealing cover 4 is detached, the piston assembly 30 is reset at the moment, the contact block 25 is separated from the trigger switch 26, the adsorption plate 12 does not carry static electricity any more, and then dust and impurities in the dust box 3 are cleaned out.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.