CN115671934A - A smoke and dust removal device for plateau tunnel construction - Google Patents

Abstract

The invention discloses a smoke discharging and dust removing device for plateau tunnel construction operation, and relates to the technical field of smoke discharging and dust removing equipment. The dust-settling device comprises an installation plate, wherein a filtering mechanism and a dust-settling mechanism connected with the filtering mechanism are arranged on the installation plate; the filtering mechanism comprises a containing box arranged on the mounting plate, and a filtering piece is arranged in the containing box. According to the invention, the fan is started to drive air to pass through the filtering holes on the filtering barrel for filtering, the air enters between the filtering barrel and the barrel, then is blown into the air outlet pipe through the fan, and then is blown into the dust falling mechanism, so that large-particle dust is filtered out through the filtering barrel, so that most of the dust is filtered out, then water is sprayed to the dust falling mechanism for falling dust, and further the water consumption of the device is reduced; through setting up the discharging pipe, the dust in the filter vat of being convenient for is discharged through the discharging pipe, is convenient for remove dust under the condition of fan work, and then the filter vat of being convenient for lasts the filtration, is convenient for improve the efficiency of work.

Description

A smoke and dust removal device for plateau tunnel construction

technical field

The invention belongs to the technical field of smoke exhaust and dust removal equipment, in particular to a smoke exhaust and dust removal device for plateau tunnel construction operations.

Background technique

In recent years, with the rapid construction of expressways in plateau areas, long, large or extra-long tunnels are not uncommon on expressways in plateau areas in China. Tunnel ventilation is a key and important construction link in the management and operation of long, large or extra-long tunnels.

And because the construction in the tunnel is usually accompanied by a large amount of productive dust, the existing ventilation is generally responsible for inputting fresh air and outputting the air containing a large amount of productive dust in the tunnel.

The publication number is CN213205742U patent application, which discloses a kind of smoke exhaust and dust removal equipment for the construction of super long tunnels in mountainous plateaus. It has the characteristics of efficient ventilation and dust reduction, easy cleaning, and convenient movement. Spray dust is carried out, and the air pollution inhaled in the tunnel has a high dust content. After the humidification, the dust particles will be blown through the humidification mechanism and fall into the air cylinder under the action of the fan. Due to the dust humidification, it is easy to accumulate in the air cylinder. Hardened, it is easy to increase the chance of the air duct being blocked.

Contents of the invention

The purpose of the present invention is to provide a smoke exhaust and dust removal device for plateau tunnel construction operations, which solves the problem that the existing spray head directly sprays and reduces dust on the air inhaled in the tunnel, and the air inhaled in the tunnel has a high dust content. The final dust will be blown through the humidification mechanism and fall into the air cylinder due to the action of the fan, and due to the dust humidification, it is easy to accumulate and harden in the air cylinder, which is likely to increase the technical problem of the probability of the air cylinder being blocked.

For reaching above-mentioned purpose, the present invention is achieved through the following technical solutions:

A smoke exhaust and dust removal device for plateau tunnel construction operations, including a mounting plate, the mounting plate is provided with a filter mechanism and a dust reduction mechanism connected to the filter mechanism;

The filter mechanism includes a housing box installed on the mounting plate, and a filter element is installed in the housing box, and the filter element includes a cylinder installed in the housing box, connected to the cylinder The filter bucket, the fan installed in the cylinder, the two discharge pipes connected to the filter bucket and passing through the cylinder, the air outlet pipe installed at the bottom of the cylinder, and the air outlet pipe Connect with the dust reduction mechanism.

Optionally, a plurality of filter holes are evenly distributed on the side of the filter barrel, the filter barrel is located in the cylinder, and the upper end of the cylinder is provided with an inner flange connected with the filter barrel.

Optionally, there is a distance between the inner wall of the cylinder and the outside of the filter barrel, and a sealing plate connected with the cylinder is provided at the mouth of the containing box.

Optionally, a dust scraping mechanism is installed in the filter bucket, and the dust scraping mechanism includes a first motor installed on the bottom surface of the filter bucket, and an output shaft installed on the first motor extends into the filter bucket. The transmission shaft at the inner end, and a plurality of dust scrapers arranged circumferentially on the side of the transmission shaft, the end of the dust scraper near the inner wall of the filter bucket is a fan-shaped plate structure, and all the fan-shaped plate structures The outer curved surface is attached to the inner wall of the filter barrel, a bearing is embedded in the bottom end of the filter barrel, and the transmission shaft is fixed in the bearing.

Optionally, the height of the discharge pipe gradually decreases from the end close to the filter barrel to the end away from the filter barrel, and a hole corresponding to the discharge pipe is provided on the side of the storage box, and the inside of the hole is A storage box for storing the dust discharged from the discharge pipe is slidably fitted, and a handle is provided on one side of the storage box outside the filter bucket.

Optionally, the dust reduction mechanism includes a treatment box installed on the installation plate, a filter plate installed in the treatment box, a water spray mechanism installed on the upper part of the treatment box, and the filter plate One end is an arc-shaped concave part, the other end is an inclined part, a slag scraping mechanism is installed in the treatment box, a slag collection box is slidingly fitted in the treatment box, and an exhaust pipe is connected to the side of the treatment box. The air outlet end of the air outlet pipe is located below the water spray mechanism.

Optionally, the slag scraping mechanism includes a second motor installed on one side of the processing box, a rotating shaft installed at the end of the output shaft of the second motor extending into the processing box, and a circumferential array on the rotating shaft Multiple slag scrapers on the perimeter.

Optionally, an opening is provided at the side of the treatment box, and the slag collecting box is slidably fitted in the opening.

Optionally, the water spray mechanism includes a sealing cover arranged on the treatment box, a water storage tank opened on the sealing cover, a sealing cover plate installed at the notch of the water storage tank, and the storage A plurality of water spray holes are evenly distributed on the bottom of the water tank, and a water pump is installed on the side of the treatment tank, and the water inlet end of the water pump is connected with the lower part of the treatment tank, and the water outlet is connected with the water storage tank.

Optionally, a third motor is installed on one side of the processing box, and a threaded pull rod is installed at one end of the output shaft of the third motor extending into the processing box. A scraping bar threaded with a pull rod, the scraping bar has a triangular strip structure, and the upper side of the scraping bar is a horizontal plane.

Embodiments of the present invention have the following beneficial effects:

1. Connect the intake pipe and exhaust pipe to the air cylinder through the elbow, turn on the fan, the fan drives the air to flow to the outlet pipe, and then the surrounding air enters the filter barrel through the mesh on the intake pipe, and then passes through the filter holes on the filter barrel Filtration enters between the filter barrel and the cylinder body, then blows into the air outlet pipe through the fan, and then blows into the dust reduction mechanism, so that the large particles of dust can be filtered out through the filter barrel to filter out most of the dust, and then spray water through the dust reduction mechanism to reduce dust , thereby facilitating the reduction of water consumption of the device;

2. By turning on the first motor and driving the dust scraper to rotate in the filter barrel through the transmission shaft, and scrape the inner wall of the filter barrel, the scraped dust will fall into the storage box through the discharge pipe, which is convenient when the fan is working. Dust removal is carried out, which facilitates the continuous filtration of the filter barrel and improves the working efficiency. By setting the dust scraper near the inner wall of the filter barrel, it is a fan-shaped plate structure, and the outer arc surface of the fan-shaped plate structure fits with the inner wall of the filter barrel, which is convenient to increase The overlapping area of the dust scraper and the inner wall of the filter barrel is convenient to increase the stability of the dust scraper rotating along the inner wall of the filter barrel;

3. The filtered air is discharged into the lower part of the water spray mechanism through the air outlet pipe, and then the water pump is turned on to draw the water in the lower part of the treatment tank into the water storage tank, and then sprayed out through the water spray hole on the water storage tank, and the filtered air discharged from the air outlet pipe The final air is mixed, so that the dust in the air absorbs water and sinks, falls on the inclined part of the filter plate, and then flows into the arc-shaped concave part, and then turns on the second motor to drive the rotating shaft to drive the slag scraper to filter the arc-shaped concave part The dust is blown up, and when the slag scraper turns out of the arc-shaped recess, the slag scraper is in a tilted state, and the dust slides down into the slag collection box;

4. Turn on the third motor to drive the threaded pull rod to drive the scraper to slide on the inclined part, which is convenient for cleaning the filter holes on the inclined part. By setting the scraper as a triangular strip structure, the upper side of the scraper is a horizontal plane, which is convenient for powder water to be scraped The upper side of the strip flows through, which is convenient to avoid the possibility that the scraping strip will affect the flow of powder water.

Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the three-dimensional structure schematic diagram of an embodiment of the present invention;

Fig. 2 is a sectional view of an embodiment of the present invention;

Fig. 3 is a cross-sectional view of a filter mechanism according to an embodiment of the present invention;

Fig. 4 is a schematic structural view of a filter element according to an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a filter plate according to an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a dust scraper according to an embodiment of the present invention.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

Mounting plate 1, storage box 2, filter element 3, sealing plate 4, first motor 5, drive shaft 6, dust scraper 7, bearing 8, hole 9, storage box 10, handle 11, processing box 12, filter plate 13 , slag collection box 14, exhaust pipe 15, second motor 16, rotating shaft 17, slag scraper 18, opening 19, sealing cover 20, water storage tank 21, sealing cover 22, water pump 23, third motor 24, threaded rod 25. Scraping strip 26, self-locking universal wheel 27, air intake pipe 28, air cylinder 29;

Cylinder body 301, filter barrel 302, fan 303, discharge pipe 304, air discharge pipe 305, filter hole 306, inner flange 307;

The arc-shaped concave portion 131 and the inclined portion 132 .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted from the present invention.

Please refer to Figs. 1-6, in this embodiment, a smoke and dust removal device for plateau tunnel construction is provided, including: a mounting plate 1, and four self-locking universal wheels 27 are installed on the bottom surface of the mounting plate 1 , to facilitate the movement of the equipment, the installation plate 1 is provided with a filter mechanism and a dust reduction mechanism connected with the filter mechanism;

The filter mechanism includes a housing box 2 installed on the mounting plate 1, and a filter element 3 is installed in the accommodation box 2. The filter element 3 includes a cylinder 301 installed in the accommodation box 2, and a filter barrel 302 connected with the cylinder 301. , the fan 303 installed in the cylinder body 301, the two discharge pipes 304 connected to the filter barrel 302 and passing through the cylinder body 301, the air outlet pipe 305 installed at the bottom of the cylinder body 301, and the air outlet pipe 305 is connected with the dust reduction mechanism .

Turn on the fan 303 to drive the air to filter through the filter holes on the filter barrel 302, enter between the filter barrel 302 and the cylinder body 301, then blow it into the air outlet pipe 305 through the fan 303, and then blow it into the dust reduction mechanism, so as to facilitate filtering through the filter barrel 302 Remove large particles of dust to filter out most of the dust, and then spray water through the dust suppression mechanism to reduce the water consumption of the device; by setting the discharge pipe 304, it is convenient for the dust in the filter barrel 302 to be discharged through the discharge pipe 304, It is convenient to remove dust when the blower fan 303 is working, thereby facilitating continuous filtering by the filter barrel 302 and improving working efficiency.

A plurality of filter holes 306 are evenly distributed on the side of the filter barrel 302 of this embodiment, the bottom end of the filter barrel 302 is a sealed end, the filter barrel 302 is located in the cylinder body 301, and the upper end of the cylinder body 301 is provided with an inversion connected with the filter barrel 302 Side 307, there is a distance between the inner wall of the cylinder body 301 and the outside of the filter barrel 302, and the opening of the housing box 2 is provided with a sealing plate 4 connected to the cylinder body 301, so that the filtered air passes through the inner wall of the cylinder body 301 and the outside of the filter barrel 302 The space between is communicated to the outlet pipe 305 .

In the filter barrel 302 of the present embodiment, a dust scraping mechanism is installed, and the dust scraping mechanism includes a first motor 5 installed on the bottom surface of the filter barrel 302, and a transmission shaft installed at one end of the output shaft of the first motor 5 extending into the filter barrel 302. 6. There are a plurality of dust scrapers 7 in the circumferential array on the side of the transmission shaft 6. The end of the dust scraper 7 near the inner wall of the filter barrel 302 is a fan-shaped plate structure, and the outer arc surface of the fan-shaped plate structure is in contact with the inner wall of the filter barrel 302. Together, the bottom end of the filter barrel 302 is embedded with a bearing 8, and the transmission shaft 6 is fixed in the bearing 8, the height of the discharge pipe 304 gradually decreases from the end close to the filter barrel 302 to the end far away from the filter barrel 302, and the side of the accommodation box 2 is provided with The hole 9 corresponding to the discharge pipe 304 is slidingly fitted with a storage box 10 for storing the discharge pipe 304 to discharge dust. Drive the dust scraper 7 to rotate in the filter barrel 302 through the transmission shaft 6, and wipe the inner wall of the filter barrel 302, and the dust scraped off falls into the storage box 10 through the discharge pipe 304, so that when the fan 303 is working, Dust removal is carried out to facilitate the continuous filtration of the filter barrel 302, which is convenient to improve the efficiency of work. The end of the dust scraper 7 near the inner wall of the filter barrel 302 is a fan-shaped plate structure, and the outer arc surface of the fan-shaped plate structure is attached to the inner wall of the filter barrel 302. It is convenient to increase the overlapping area of the dust scraper 7 and the inner wall of the filter bucket 302, and to increase the stability of the rotation of the dust scraper 7 along the inner wall of the filter bucket 302.

The dust reduction mechanism of the present embodiment comprises a treatment box 12 installed on the mounting plate 1, a filter plate 13 installed in the treatment box 12, a water spray mechanism installed on the top of the treatment box 12, and one end of the filter plate 13 is arc-shaped The recessed part 131 and the other end is an inclined part 132. A slag scraping mechanism is installed in the processing box 12, and a slag collection box 14 is slidingly fitted in the processing box 12. The side of the processing box 12 is connected with an exhaust pipe 15, and the gas outlet pipe 305 is at the gas outlet end. Located below the water spray mechanism, an air inlet pipe 28 is connected above the treatment box 12 and the filter barrel 302, so as to be convenient to be connected with the air cylinder through the air inlet pipe 28.

The slag scraping mechanism of this embodiment includes a second motor 16 installed on one side of the processing box 12, a rotating shaft 17 installed at the end of the output shaft of the second motor 16 extending into the processing box 12, and a circumferential array on the side of the rotating shaft 17. A plurality of slag scrapers 18, the side of the processing box 12 is provided with an opening 19, and the slag collection box 14 is slidably fitted in the opening 19, so that the second motor 16 drives the rotating shaft 17 to drive the slag scraper 18 to move the arc-shaped recess 131 The dust filtered inside is blown up, and then when the slag scraper 18 turns out of the arc-shaped recess 131 , the slag scraper 18 is in an inclined state, and the dust slides down on the slag collection box 14 .

The water spraying mechanism of the present embodiment comprises the sealing cover 20 that is arranged on the treatment box 12, the water storage tank 21 that is opened on the sealing cover 20, the sealing cover plate 22 that is installed in the water storage tank 21 notches, the water storage tank 21 bottom surfaces Cloth is provided with a plurality of water spray holes, and processing box 12 side is equipped with water pump 23, and water pump 23 water inlet is communicated with processing box 12 bottoms, and water outlet is communicated with water storage tank 21, is convenient to open water pump 23 and handles the water in box 12 bottoms. It is drawn into the water storage tank 21, then sprayed out through the water spray hole on the water storage tank 21, and mixed with the filtered air discharged from the air outlet pipe 305, so that the dust in the air absorbs water and sinks, and falls on the filter plate 13, which is convenient Filter the powdered water through the filter plate 13, and then pump it into the water storage tank 21 through the water pump 23, so as to facilitate water recycling.

One side of the processing box 12 of the present embodiment is equipped with a third motor 24, and the output shaft of the third motor 24 extends into the processing box 12. One end is equipped with a threaded pull rod 25, and the inclined part 132 is slidably matched with the threaded pull rod 25. The scraper 26 is a triangular strip structure, and the upper side of the scraper 26 is a horizontal plane, which is convenient for opening the third motor 24 to drive the threaded pull rod 25 to drive the scraper 26 to slide on the inclined portion 132, so as to facilitate cleaning of the scratches on the inclined portion 132. Filter hole, by arranging scraper 26 to be triangular strip structure, the upper side of scraper 26 is a horizontal plane, facilitates powder water to flow through scraper 26 upper side, is convenient to avoid the probability that scraper 26 influences powder water flow.

Working principle: connect the intake pipe 28 and the exhaust pipe 15 with the air duct 29 through the elbow, turn on the fan 303, the fan 303 drives the air to flow to the outlet pipe 305, and then the surrounding air enters the filter barrel 302 through the mesh on the intake pipe 28 , then filter through the filter holes on the filter barrel 302 and enter between the filter barrel 302 and the cylinder body 301, then blow into the air outlet pipe 305 through the fan 303, and then blow into the dust reduction mechanism, so as to facilitate the filtering of large particles of dust through the filter barrel 302, To filter out most of the dust, and then spray water through the dust suppression mechanism to reduce the dust, thereby reducing the water consumption of the device;

Then turn on the first motor 5 to drive the dust scraper 7 to rotate in the filter barrel 302 through the transmission shaft 6, and scrape the inner wall of the filter barrel 302, and the dust that is scraped off falls into the storage box 10 through the discharge pipe 304, which is convenient for blowing air in the fan. When the 303 is working, dust removal is carried out to facilitate the continuous filtration of the filter barrel 302, which is convenient to improve the efficiency of the work. By setting the dust scraper 7 near the inner wall of the filter barrel 302, it is a fan-shaped plate structure, and the outer arc surface of the fan-shaped plate structure Fitting with the inner wall of the filter barrel 302 is convenient to increase the overlapping area of the dust scraper 7 and the inner wall of the filter barrel 302, and is convenient to increase the stability of the rotation of the dust scraper 7 along the inner wall of the filter barrel 302;

The filtered air is discharged below the water spray mechanism through the air outlet pipe 305, then the water pump 23 is turned on to draw the water in the bottom of the treatment tank 12 into the water storage tank 21, and then it is sprayed out through the water spray holes on the water storage tank 21, and is connected with the air outlet pipe 305. The discharged filtered air is mixed, so that the dust in the air absorbs water and sinks, falls on the inclined part 132 on the filter plate 13, then flows into the arc-shaped concave part 131, and then turns on the second motor 16 to drive the rotating shaft 17 to drive The slag scraper 18 scrapes up the dust filtered in the arc-shaped recess 131, and then when the slag scraper 18 rotates out of the arc-shaped recess 131, the slag scraper 18 is in an inclined state, and the dust slides down on the slag collection box 14 to reduce dust. After the air is discharged back in the air cylinder 29 through the filter plate 13 and the exhaust pipe 15;

Then open the third motor 24 to drive the threaded pull rod 25 to drive the scraper 26 to slide on the inclined portion 132 to facilitate the cleaning of the filter holes on the inclined portion 132. By setting the scraper 26 as a triangular strip structure, the upper side of the scraper 26 is a horizontal plane. It is convenient for the powder water to flow through the upper side of the scraper 26, and it is convenient to avoid the possibility that the scraper 26 affects the flow of powder water.

It should be noted that all the electrical equipment involved in this application can be powered by a storage battery or an external power supply.

The above-described embodiments can be combined with each other.

The present invention is not limited to the above-mentioned embodiments, and anyone should know that structural changes made under the inspiration of the present invention fall within the protection scope of the present invention.

The technologies, shapes and construction parts not described in detail in the present invention are all known technologies.

Claims (10)

1. The utility model provides a plateau tunnel construction operation is with dust collector that discharges fume which characterized in that includes: the dust-settling device comprises a mounting plate (1), wherein a filtering mechanism and a dust-settling mechanism connected with the filtering mechanism are arranged on the mounting plate (1);

filtering mechanism is including installing box (2) that holds on mounting panel (1), it installs and filters piece (3) to hold built-in being equipped with of box (2), filter piece (3) including installing barrel (301) in holding box (2), with filter vat (302) that barrel (301) are connected, install fan (303), connection in barrel (301) on filter vat (302) and run through two discharging pipe (304) of barrel (301), install outlet duct (305) of barrel (301) bottom, just outlet duct (305) with dust fall mechanism connects.

2. The smoke discharging and dust removing device for the plateau tunnel construction operation as claimed in claim 1, wherein a plurality of filtering holes (306) are uniformly distributed on the side of the filtering barrel (302), the filtering barrel (302) is located in the barrel (301), and an inner flanging (307) connected with the filtering barrel (302) is arranged at the upper end of the barrel (301).

3. The smoke exhausting and dust removing device for plateau tunnel construction operation as claimed in claim 2, wherein there is a space between the inner wall of the cylinder (301) and the outside of the filtering barrel (302), and a sealing plate (4) connected to the cylinder (301) is provided at the box opening of the containing box (2).

4. The smoke exhaust and dust removal device for plateau tunnel construction operation as claimed in claim 3, wherein a dust scraping mechanism is installed in the filter vat (302), the dust scraping mechanism comprises a first motor (5) installed on the bottom surface of the filter vat (302), a transmission shaft (6) and a circumferential array arranged at one end of an output shaft of the first motor (5) extending into the filter vat (302), a plurality of dust scraping plates (7) arranged on the circumferential side of the transmission shaft (6), the dust scraping plates (7) are close to one end of the inner wall of the filter vat (302) and are of a fan-shaped plate structure, the outer arc surface of the fan-shaped plate structure is attached to the inner wall of the filter vat (302), a bearing (8) is embedded into the bottom end of the filter vat (302), and the transmission shaft (6) is fixed in the bearing (8).

5. The device for removing smoke and dust in plateau tunnel construction operation according to claim 4, wherein the height of the discharging pipe (304) is gradually reduced from the end close to the filtering barrel (302) to the end far away from the filtering barrel (302), a hole (9) corresponding to the discharging pipe (304) is arranged on the side surface of the containing box (2), a containing box (10) used for containing dust discharged from the discharging pipe (304) is in sliding fit in the hole (9), and a handle (11) is arranged on one side of the containing box (10) outside the filtering barrel (302).

6. The device for removing smoke and dust in plateau tunnel construction operation according to claim 1, wherein the dust-settling mechanism comprises a processing box (12) arranged on the mounting plate (1), a filter plate (13) arranged in the processing box (12), and a water spraying mechanism arranged on the upper part of the processing box (12), one end of the filter plate (13) is an arc-shaped concave part (131), the other end is an inclined part (132), a slag scraping mechanism is arranged in the processing box (12), a slag collecting box (14) is in sliding fit in the processing box (12), an exhaust pipe (15) is connected to the side part of the processing box (12), and the air outlet end of the exhaust pipe (305) is positioned below the water spraying mechanism.

7. The smoke exhaust and dust removal device for plateau tunnel construction operation according to claim 6, wherein the slag scraping mechanism comprises a second motor (16) installed on one side of the treatment box (12), a rotating shaft (17) installed at one end of an output shaft of the second motor (16) extending into the treatment box (12), and a plurality of slag scraping plates (18) circumferentially arrayed on the periphery of the rotating shaft (17).

8. A smoke and dust removing device for plateau tunnel construction operation according to claim 6, wherein the side of the processing box (12) is provided with an opening (19), and the slag collecting box (14) is slidably fitted in the opening (19).

9. The smoke discharging and dust removing device for plateau tunnel construction operation according to claim 6, wherein the water spraying mechanism comprises a sealing cover (20) arranged on the treatment tank (12), a water storage tank (21) arranged on the sealing cover (20), and a sealing cover plate (22) arranged at the notch of the water storage tank (21), a plurality of water spraying holes are uniformly distributed on the bottom surface of the water storage tank (21), a water pump (23) is arranged on the side surface of the treatment tank (12), and the water inlet end of the water pump (23) is communicated with the lower portion of the treatment tank (12) and the water outlet end is communicated with the water storage tank (21).

10. The smoke exhaust and dust removal device for the plateau tunnel construction operation according to claim 6, wherein a third motor (24) is installed on one side of the treatment box (12), a threaded pull rod (25) is installed on one end of an output shaft of the third motor (24) extending into the treatment box (12), a scraping bar (26) in threaded fit with the threaded pull rod (25) is slidably fitted on the inclined portion (132), the scraping bar (26) is in a triangular strip structure, and the upper side of the scraping bar (26) is a horizontal plane.

Images