Shaft ventilation device with dust removal structure

By designing a shaft ventilation device with a dust removal structure, and utilizing a combination of filter screens and cleaning rollers, efficient filtration and cleaning of the air inside the shaft are achieved, solving the problem of dust clogging in the filter mechanism and ensuring normal ventilation and cleaning efficiency of the elevator shaft.

CN224050536UActive Publication Date: 2026-03-27HUBEI HANFENG SHAFT TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-17
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

In existing shaft ventilation systems, dust tends to accumulate on the filter mechanism after a period of use, which reduces the airflow rate and affects the normal operation of the elevator due to the need for regular cleaning.

Method used

A well ventilation device with a dust removal structure was designed, including a filter screen, a cleaning roller, and a cleaning column. The filter screen is automatically replaced and the cleaning roller is self-cleaned by a drive chain and drive wheel, ensuring that the filter screen pores are not blocked by dust and that the dust on the cleaning roller does not adhere to the filter screen during the cleaning process.

Benefits of technology

It enables automatic replacement and cleaning of the filter, ensuring air quality in the shaft, preventing dust blockage, ensuring normal ventilation of the elevator shaft, and improving the cleaning efficiency of the cleaning roller.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224050536U_ABST
Patent Text Reader

Abstract

The utility model discloses a shaftway ventilation device with a dust removal structure, which comprises a mounting seat, two groups of symmetrically distributed mounting rods are arranged in the mounting seat, a filter screen is arranged in the mounting seat, two ends of the filter screen are respectively wound with the two groups of mounting rods, two groups of symmetrically distributed cleaning rollers are arranged in the mounting seat, and the cleaning rollers are arranged in the mounting seat. Two sets of symmetrically-distributed mounting frames are slidably mounted on the mounting base, a plurality of sets of cleaning columns are distributed on the two sets of mounting frames at equal intervals, impurities, dust and the like contained in air penetrating through the filter screen through the air inlet pipe and flowing to the air outlet pipe are filtered through the arranged filter screen, and it is guaranteed that the air in an elevator shaft is fresh; and meanwhile, the arranged cleaning roller is matched with the fan to clean dust adhered to the surface of the filter screen.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shaft ventilation, in particular to a shaft ventilation device with dust removal structure. BACKGROUND

[0002] The elevator shaft is the space in which the car and the counterweight device or the hydraulic cylinder plunger move, and the space is limited by the bottom of the shaft pit, the shaft wall and the shaft top. In order to enter and exit, an entrance is opened at each landing. The ventilation of the elevator shaft is mainly realized through the ventilation openings or ventilation channels on the top or side of the building. These ventilation openings or ventilation channels can allow fresh air to enter the shaft and exhaust the dirty air, thereby ensuring the air quality in the shaft.

[0003] In the prior art, in order to ensure the air quality in the shaft, a dust removal mechanism is usually installed to filter the air entering the shaft. However, after the filtering mechanism in the shaft ventilation device is used for a period of time, a large amount of dust will be attached to the filtering mechanism and is not easy to clean. If the dust is not cleaned for a long time, it will affect the normal air flow rate of the ventilation device. If the ventilation device is stopped regularly for cleaning, it will affect the normal convenience of the electrical shaft. SUMMARY

[0004] The utility model discloses a kind of shaft ventilation devices with dust removal structure, to solve the problem raised in above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of shaft ventilation device with dust removal structure, including mounting seat, two groups of symmetrical distribution installation rod are equipped in the mounting seat, two ends of two groups of the installation rod are all through mounting seat and are rotationally connected with mounting seat by bearing, driving wheel is all spliced on two groups of the installation rod, driving chain is equipped in the mounting seat, the driving chain is respectively connected with two groups of driving wheel transmission, filter screen is equipped in the mounting seat, two ends of the filter screen are respectively wound with two groups of installation rod, four groups of symmetrical distribution stay rod are equipped in the mounting seat, the filter screen is respectively set with four groups of stay rod, two groups of symmetrical distribution cleaning cylinder are equipped in the mounting seat, the cleaning cylinder is located between corresponding two groups of stay rod, the cleaning cylinder is attached with filter screen outer surface, the cleaning cylinder is rotationally connected with mounting seat by mounting shaft, two groups of symmetrical distribution mounting frame are slidably installed on the mounting seat, two groups of the mounting frame are respectively set with cleaning cylinder, multiple groups of cleaning column are equidistantly distributed on two groups of the mounting frame, multiple groups of the cleaning column are all set with cleaning cylinder, two groups of symmetrical distribution fan are equipped in the mounting seat, two groups of the fan are respectively set with two groups of cleaning cylinder, two groups of the fan are respectively set with filter screen inner side.

[0006] As a further preferred technical solution of the present application, the mounting seat is provided with an air inlet pipe and an air outlet pipe, a closing frame is arranged between the air inlet pipe and the air outlet pipe, an extension pipe is arranged between the closing frame and the air outlet pipe, the extension pipe is fixedly connected to the closing frame and the air outlet pipe at both ends, the air inlet pipe and the closing frame are slidably connected to the mounting seat, the filter screen is located between the air inlet pipe and the closing frame, and two groups of second sliding rods are symmetrically arranged in the mounting seat, and the two groups of fans are located on the outer sides of the extension pipe.

[0007] As a further preferred technical solution of the present application, the mounting seat is provided with an air inlet pipe and an air outlet pipe, a closing frame is arranged between the air inlet pipe and the air outlet pipe, an extension pipe is arranged between the closing frame and the air outlet pipe, the extension pipe is fixedly connected to the closing frame and the air outlet pipe at both ends, the air inlet pipe and the closing frame are slidably connected to the mounting seat, the filter screen is located between the air inlet pipe and the closing frame, and two groups of second sliding rods are symmetrically arranged in the mounting seat, and the two groups of fans are located on the outer sides of the extension pipe.

[0008] As a further preferred technical solution of the present application, the mounting seat is provided with an air inlet pipe and an air outlet pipe, a closing frame is arranged between the air inlet pipe and the air outlet pipe, an extension pipe is arranged between the closing frame and the air outlet pipe, the extension pipe is fixedly connected to the closing frame and the air outlet pipe at both ends, the air inlet pipe and the closing frame are slidably connected to the mounting seat, the filter screen is located between the air inlet pipe and the closing frame, and two groups of second sliding rods are symmetrically arranged in the mounting seat, and the two groups of fans are located on the outer sides of the extension pipe.

[0009] As a further preferred technical solution of the present application, the mounting seat is provided with an air inlet pipe and an air outlet pipe, a closing frame is arranged between the air inlet pipe and the air outlet pipe, an extension pipe is arranged between the closing frame and the air outlet pipe, the extension pipe is fixedly connected to the closing frame and the air outlet pipe at both ends, the air inlet pipe and the closing frame are slidably connected to the mounting seat, the filter screen is located between the air inlet pipe and the closing frame, and two groups of second sliding rods are symmetrically arranged in the mounting seat, and the two groups of fans are located on the outer sides of the extension pipe.

[0010] As a further preferred technical solution of the present application, the mounting seat is provided with an air inlet pipe and an air outlet pipe, a closing frame is arranged between the air inlet pipe and the air outlet pipe, an extension pipe is arranged between the closing frame and the air outlet pipe, the extension pipe is fixedly connected to the closing frame and the air outlet pipe at both ends, the air inlet pipe and the closing frame are slidably connected to the mounting seat, the filter screen is located between the air inlet pipe and the closing frame, and two groups of second sliding rods are symmetrically arranged in the mounting seat, and the two groups of fans are located on the outer sides of the extension pipe.

[0011] As a further preferred technical solution of the present application, the mounting seat is provided with an air inlet pipe and an air outlet pipe, a closing frame is arranged between the air inlet pipe and the air outlet pipe, an extension pipe is arranged between the closing frame and the air outlet pipe, the extension pipe is fixedly connected to the closing frame and the air outlet pipe at both ends, the air inlet pipe and the closing frame are slidably connected to the mounting seat, the filter screen is located between the air inlet pipe and the closing frame, and two groups of second sliding rods are symmetrically arranged in the mounting seat, and the two groups of fans are located on the outer sides of the extension pipe.

[0012] The utility model provides a kind of well hole ventilation device with dust removal structure, with following beneficial effects:

[0013] (1) The filter screen is arranged to filter the impurities and dust contained in the air flowing through the filter screen and to the air outlet pipe through the air inlet pipe, so that the air in the elevator shaft is fresh, and the surface of the filter screen is cleaned by the cleaning roller and the fan, so that the filter screen pores are not blocked by dust, the air flow rate of the filter screen is ensured, and the normal ventilation of the elevator shaft is avoided.

[0014] (2) The cleaning column is arranged to clean the surface of the cleaning roller, so that the cleanliness of the cleaning roller is ensured, the dust and impurities adhered to the cleaning roller are prevented from adhering to the filter screen again during the cleaning process of the cleaning roller, and the cleaning efficiency of the cleaning roller is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the whole structure of the utility model;

[0016] Figure 2 It is a schematic view of the internal structure of the mounting seat of the utility model;

[0017] Figure 3 It is a schematic view of the structure of the mounting frame of the utility model;

[0018] Figure 4 It is a schematic view of the structure of the air inlet pipe of the utility model;

[0019] Figure 5 It is a schematic view of the Figure 4 It is a structure enlarged view of position A;

[0020] Figure 6 It is a schematic view of the structure of the fan of the utility model;

[0021] In the drawing: 1, mounting seat; 2, air inlet pipe; 3, air outlet pipe; 4, closed frame; 5, telescopic pipe; 6, mounting rod; 7, driving wheel; 8, driving chain; 9, filter screen; 10, cleaning roller; 11, mounting shaft; 12, first gear; 13, first rack; 14, air cylinder; 15, rotating rod; 16, cleaning column; 17, torsion spring; 18, mounting frame; 19, first sliding rod; 20, first spring; 21, cam; 22, fan; 23, second sliding rod; 24, second spring; 25, second rack; 26, driving rod; 27, second gear; 28, third gear; 29, third rack; 30, lead screw; 31, travel switch; 32, supporting rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model.

[0023] The utility model provides technical scheme: such as Figures 1-6As shown, in this embodiment, a hoistway ventilation device with dust removal structure comprises a mounting seat 1, two groups of symmetrically distributed mounting rods 6 are arranged in the mounting seat 1, both ends of the two groups of mounting rods 6 penetrate through the mounting seat 1 and are rotatably connected with the mounting seat 1 through bearings, driving wheels 7 are sleeved on the two groups of mounting rods 6, a driving chain 8 is arranged in the mounting seat 1, the driving chain 8 is respectively in transmission connection with the two groups of driving wheels 7, a filter screen 9 is arranged in the mounting seat 1, both ends of the filter screen 9 are respectively wound around the two groups of mounting rods 6, four groups of symmetrically distributed supporting rods 32 are arranged in the mounting seat 1, the filter screen 9 is arranged in close contact with the four groups of supporting rods 32, two groups of symmetrically distributed cleaning rollers 10 are arranged in the mounting seat 1, the cleaning rollers 10 are located between the corresponding two groups of supporting rods 32, the cleaning rollers 10 are in close contact with the outer surface of the filter screen 9, the cleaning rollers 10 are rotatably connected with the mounting seat 1 through mounting shafts 11, two groups of symmetrically distributed mounting frames 18 are slidably arranged on the mounting seat 1, the two groups of mounting frames 18 are respectively arranged in correspondence with the cleaning rollers 10, a plurality of groups of cleaning columns 16 are equidistantly arranged on the two groups of mounting frames 18, the plurality of groups of cleaning columns 16 are arranged in close contact with the cleaning rollers 10, two groups of symmetrically distributed fans 22 are arranged in the mounting seat 1, the two groups of fans 22 are respectively arranged in correspondence with the two groups of cleaning rollers 10, the two groups of fans 22 are respectively arranged in correspondence with the inner side of the filter screen 9, the filter screen 9 is arranged to filter the impurities, dust and the like contained in the air passing through the filter screen 9 and flowing to the air outlet pipe 3 through the air inlet pipe 2, so as to ensure the quality of the air in the elevator hoistway, after the filter screen 9 is used for a period of time, the rotation of the mounting rod 6 driven by the motor on the mounting seat 1 is started, the synchronous rotation of the two groups of mounting rods 6 and the transmission of the filter screen 9 between the two groups of mounting rods 6 are realized in cooperation with the driving chain 8 and the driving wheel 7, the used filter screen 9 is transmitted to one side, and a new filter screen 9 is replaced between the air inlet pipe 2 and the closing frame 4, so as to avoid the influence of the pore blockage of the filter screen 9 on the hoistway ventilation, the used filter screen 9 is rubbed with the cleaning roller 10 closely arranged in close contact therewith during the replacement process, the impurities adhered to the filter screen 9 are scraped to the cleaning roller 10, the impurities on the surface of the filter screen 9 are cleaned, so as to facilitate the next conversion of the working area of the filter screen 9, the close contact or the away of the air inlet pipe 2 and the closing frame 4 is for ensuring the normal ventilation work of the hoistway ventilation device or for realizing the smooth replacement of the working area of the filter screen 9, the air inlet pipe 2 and the air outlet pipe 3 are arranged on the mounting seat 1, the closing frame 4 is arranged between the air inlet pipe 2 and the air outlet pipe 3, the telescopic pipe 5 is arranged between the closing frame 4 and the air outlet pipe 3, both ends of the telescopic pipe 5 are fixedly connected with the closing frame 4 and the air outlet pipe 3, the air inlet pipe 2 and the closing frame 4 are slidably connected with the mounting seat 1, the filter screen 9 is located between the air inlet pipe 2 and the closing frame 4, two groups of symmetrically distributed second sliding rods 23 are arranged in the mounting seat 1, the two groups of fans 22 are respectively located on the outer side of the telescopic pipe 5, a plurality of groups of second springs 24 are sleeved on the two groups of second sliding rods 23, the air inlet pipe 2 and the closing frame 4 are respectively slidably sleeved with the second sliding rods 23, both ends of the second spring 24 are fixedly connected with the air inlet pipe 2 or the closing frame 4 and the mounting seat 1.The second rack 25 is fixedly installed on the air inlet pipe 2 and the closed frame 4, the two groups of second racks 25 are centrally symmetrically distributed, the driving rod 26 is rotatably installed in the mounting seat 1, the driving rod 26 is located between the two groups of second racks 25, the second gear 27 is sleeved on the driving rod 26, the second gear 27 is respectively meshed with the two groups of second racks 25, the third gear 28 is sleeved on the driving rod 26, the third rack 29 is slidably installed in the mounting seat 1, the two groups of third racks 29 are slidably installed in the mounting seat 1, the third rack 29 is meshed with the third gear 28, the lead screw 30 is arranged in the mounting seat 1, the two ends of the lead screw 30 respectively penetrate through the mounting seat 1 and are rotatably connected with the mounting seat 1 through bearings, the lead screw 30 penetrates through the third rack 29 and is threadedly connected with the third rack 29, the two groups of travel switches 31 are arranged in the mounting seat 1, the two groups of travel switches 31 are respectively arranged in correspondence with the two ends of the third rack 29, and the travel switch 31 is arranged to ensure that the air inlet pipe 2 and the closed frame 4 are tightly attached or separated by a certain position in the mounting seat 1, so that the filter screen 9 is convenient to replace.

[0024] As shown in Figure 2 and Figure 3 , the first gear 12 is sleeved on the mounting shaft 11, the first rack 13 is slidably installed in the mounting seat 1, the air cylinder 14 is fixedly installed in the mounting seat 1, the first rack 13 is connected with the output end of the piston rod of the air cylinder 14, the plurality of cleaning columns 16 are rotatably connected with the mounting frame 18 through the rotating rod 15, the plurality of rotating rods 15 are sleeved with the torsional spring 17, the two ends of the torsional spring 17 are respectively fixedly connected with the mounting frame 18 and the cleaning column 16, the first sliding rod 19 is fixedly installed in the mounting seat 1, the mounting frame 18 is slidably sleeved with the first sliding rod 19, the two groups of symmetrically distributed first springs 20 are sleeved on the first sliding rod 19, the two ends of the first spring 20 are respectively fixedly connected with the mounting frame 18 and the mounting seat 1, the cam 21 is rotatably installed in the mounting seat 1, the cam 21 is attached to the mounting frame 18, the cleaning drum 10 is started after being used for a period of time, the air cylinder 14 drives the first rack 13 to slide, and the first gear 12 is matched to realize the rotation of the mounting shaft 11, thereby driving the cleaning drum 10 to rotate, so that the side of the cleaning drum 10 adhered with impurities and dust faces the cleaning column 16, the cam 21 in the mounting seat 1 is driven by the motor to rotate, and the first sliding rod 19 and the first spring 20 are matched to drive the mounting frame 18 to slide left and right on the mounting seat 1 with the plurality of cleaning columns 16, the cleaning column 16 attached to the cleaning drum 10 realizes the cleaning of the impurities attached to the cleaning drum 10 in the process of reciprocating sliding, guarantees the cleanliness of the cleaning drum 10, avoids that the dust and impurities adhered on the cleaning drum 10 are re-adhered on the filter screen 9 in the cleaning process of the cleaning drum 10, affects the cleaning effect of the filter screen 9, and further realizes the guarantee of the cleaning efficiency of the cleaning drum 10.

[0025] The utility model provides a kind of hoistway ventilation device with dust removal structure, specific working principle is as follows: the impurities, dust etc. contained in the air that passes through filter screen 9 and flows to air outlet pipe 3 by air inlet pipe 2 are filtered by the filter screen 9, the quality of air in elevator shaft is guaranteed, the rotation of mounting rod 6 driven by motor on mounting seat 1 is started after filter screen 9 is used for a period of time, the synchronous rotation of two groups of mounting rod 6 and the transmission of filter screen 9 between two groups of mounting rod 6 are realized by cooperation of driving chain 8 and driving wheel 7, used filter screen 9 is transmitted to one side, and new filter screen 9 is replaced between air inlet pipe 2 and closed frame 4, avoid the influence of filter screen 9 aperture blockage on hoistway ventilation, used filter screen 9 is rubbed with cleaning cylinder 10 closely fitted therewith during replacement, and the impurities adhered to filter screen 9 are scraped to cleaning cylinder 10, the surface impurities of filter screen 9 are cleaned, to facilitate the next conversion of filter screen 9 working area, and the close or away of air inlet pipe 2 and closed frame 4 is to ensure the normal ventilation work of the hoistway ventilation device or to realize the smooth replacement of filter screen 9 working area, the setting of travel switch 31 can ensure that air inlet pipe 2 and closed frame 4 are closely fitted or separated in mounting seat 1 to facilitate the replacement of filter screen 9, cleaning cylinder 10 is used for a period of time, and then first rack 13 is driven to slide by starting cylinder 14, and the rotation of mounting shaft 11 is realized by cooperation of first gear 12, and then cleaning cylinder 10 is driven to rotate, so that the side of cleaning cylinder 10 adhered with impurities and dust faces cleaning column 16, the rotation of cam 21 is driven by motor in mounting seat 1, and mounting frame 18 drives multiple cleaning columns 16 to reciprocate on mounting seat 1 by cooperation of first slide bar 19 and first spring 20, and the cleaning of impurities adhered to cleaning cylinder 10 is realized in reciprocating process of cleaning column 16 closely fitted with cleaning cylinder 10, the cleanliness of cleaning cylinder 10 is guaranteed, the dust and impurities adhered to cleaning cylinder 10 are prevented from re-adhering to filter screen 9 in its cleaning process to affect the cleaning effect of filter screen 9, and then the cleaning efficiency of cleaning cylinder 10 is guaranteed.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A shaft ventilation device with a dust removal structure, comprising a mounting seat (1), characterized in that: The mounting seat (1) is provided with two groups of symmetrically distributed mounting rods (6), both ends of the two groups of mounting rods (6) penetrate the mounting seat (1) and are rotatably connected with the mounting seat (1) through bearings, both groups of mounting rods (6) are sleeved with driving wheels (7), the mounting seat (1) is provided with a driving chain (8), the driving chain (8) is respectively in transmission connection with the two groups of driving wheels (7), the mounting seat (1) is provided with a filter screen (9), both ends of the filter screen (9) are respectively wound with the two groups of mounting rods (6), the mounting seat (1) is provided with four groups of symmetrically distributed supporting rods (32), the filter screen (9) is respectively arranged in abutment with the four groups of supporting rods (32), the mounting seat (1) is provided with two groups of symmetrically distributed cleaning rollers (10), the cleaning rollers (10) are located between the corresponding two groups of supporting rods (32), the cleaning rollers (10) are in abutment with the outer surface of the filter screen (9), the cleaning rollers (10) are rotatably connected with the mounting seat (1) through mounting shafts (11), the mounting seat (1) is slidably provided with two groups of symmetrically distributed mounting frames (18), the two groups of mounting frames (18) are respectively arranged correspondingly with the cleaning rollers (10), a plurality of cleaning columns (16) are equidistantly distributed on the two groups of mounting frames (18), a plurality of cleaning columns (16) are arranged in abutment with the cleaning rollers (10), the mounting seat (1) is provided with two groups of symmetrically distributed fans (22), the two groups of fans (22) are respectively arranged correspondingly with the two groups of cleaning rollers (10), the two groups of fans (22) are respectively arranged correspondingly with the inner side of the filter screen (9).

2. The shaft ventilation device having a dust removal structure according to claim 1, characterized in that: The mounting seat (1) is provided with an air inlet pipe (2) and an air outlet pipe (3), a closing frame (4) is arranged between the air inlet pipe (2) and the air outlet pipe (3), an expansion pipe (5) is arranged between the closing frame (4) and the air outlet pipe (3), both ends of the expansion pipe (5) are fixedly connected with the closing frame (4) and the air outlet pipe (3) respectively, the air inlet pipe (2) and the closing frame (4) are slidably connected with the mounting seat (1), the filter screen (9) is located between the air inlet pipe (2) and the closing frame (4), the mounting seat (1) is provided with two groups of symmetrically distributed second sliding rods (23), the two groups of fans (22) are located on the outer side of the expansion pipe (5).

3. The shaft ventilation device with dust removal structure according to claim 2, characterized in that: A plurality of second springs (24) are sleeved on the two groups of second sliding rods (23), the air inlet pipe (2) and the closing frame (4) are respectively slidably sleeved with the second sliding rods (23), both ends of the second spring (24) are fixedly connected with the air inlet pipe (2) or the closing frame (4) and the mounting seat (1) respectively, the air inlet pipe (2) and the closing frame (4) are fixedly provided with second racks (25), the two groups of second racks (25) are centrally and symmetrically distributed.

4. The shaft ventilation device with dust removal structure according to claim 1, characterized in that: The driving rod (26) is rotatably installed in the mounting seat (1), is located between the two groups of second ratchets (25), the second gear (27) is sleeved on the driving rod (26), the second gear (27) is respectively connected with the two groups of second ratchets (25), the third gear (28) is sleeved on the driving rod (26), the third ratchet (29) is slidably installed in the mounting seat (1), the third ratchet (29) is slidably installed in the mounting seat (1), the third ratchet (29) is connected with the third gear (28), the lead screw (30) is arranged in the mounting seat (1), the both ends of the lead screw (30) are respectively penetrated through the mounting seat (1) and are rotatably connected with the mounting seat (1) through the bearing, the lead screw (30) is penetrated through the third ratchet (29) and is threadedly connected with the third ratchet (29), the two groups of travel switches (31) are arranged in the mounting seat (1), and the two groups of travel switches (31) are respectively arranged at the two ends of the third ratchet (29) correspondingly.

5. The shaft ventilation device having a dust removal structure according to claim 1, characterized in that: The first gear (12) is sleeved on the mounting shaft (11), the first ratchet (13) is slidably installed in the mounting seat (1), the cylinder (14) is fixedly installed in the mounting seat (1), and the first ratchet (13) is connected with the output end of the cylinder (14) piston rod.

6. The shaft ventilation device having a dust removal structure according to claim 1, characterized in that: The cleaning column (16) is rotatably connected with the mounting frame (18) through the rotating rod (15), the torsional spring (17) is sleeved on the rotating rod (15), and the both ends of the torsional spring (17) are fixedly connected with the mounting frame (18) and the cleaning column (16).

7. The shaft ventilation device having a dust removal structure according to claim 1, characterized in that: The first sliding rod (19) is fixedly installed in the mounting seat (1), the mounting frame (18) is slidably sleeved with the first sliding rod (19), the first sliding rod (19) is sleeved with the two groups of symmetrically distributed first springs (20), the both ends of the first spring (20) are fixedly connected with the mounting frame (18) and the mounting seat (1), the cam (21) is rotatably installed in the mounting seat (1), and the cam (21) is abutted with the mounting frame (18).