A dust removal device for bridge construction

Abstract

The application relates to the field of bridge construction and discloses a dust removal device for bridge construction, which effectively solves the problem that it is difficult to adjust the spraying intensity and resource waste is caused at present, and comprises a moving base, a box body is arranged at the top end of the moving base, a rotating groove is arranged at the top end of the box body, a rotating disc is rotatably arranged in the rotating groove, a mounting frame is arranged at the top end of the rotating disc, a spraying air duct is arranged on the mounting frame, rotating shafts are symmetrically arranged at the two sides of the spraying air duct, one end of each rotating shaft is fixedly connected with the output shaft of a first motor, and the other end of the other rotating shaft is fixedly connected with the output shaft of a second motor. When the baffle is rotated to the first through groove and the first nozzle group and the second nozzle group are opposite to each other, the first nozzle group and the second nozzle group spray water mist into the inner cavity of the spraying air duct; when the baffle is rotated to the second through groove and the second nozzle group is opposite to the second nozzle group, the second nozzle group sprays water mist into the inner cavity of the spraying air duct, the spraying intensity is conveniently adjusted, and the dust removal effect is conveniently adjusted.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction, specifically a dust removal device for bridge construction. Background Technology

[0002] According to the patent document with authorization announcement number "CN214130893U" and invention title "A Dust Suppression Spraying Device for Highway Bridge Construction," the description states that this dust suppression spraying device for highway bridge construction uses a water pump to transport water from the tank to a connecting water pipe, which in turn delivers the water to the spray ring via a flexible hose. The water is then sprayed out using atomizing nozzles, and a dust suppression fan blows the atomized water out of the spray ring, thus suppressing dust at the construction site. The connection between the dust suppression fan and the spray ring facilitates the disassembly and installation of the dust suppression fan, making it convenient for workers to clean or replace it. However, the following drawbacks still exist:

[0003] During the dust removal process, it is not easy to adjust the spray intensity. When there is little dust, the spray volume is large, which can easily lead to excessive spraying and waste of resources. Summary of the Invention

[0004] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides a dust removal device for bridge construction, which effectively solves the problem that it is not easy to adjust the spray intensity and that it is easy to waste resources.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dust removal device for bridge construction, comprising a movable base, a box being installed at the top of the movable base, a rotating groove being opened at the top of the box, a turntable being rotatably installed inside the rotating groove, an installation frame being installed at the top of the turntable, a spray duct being provided on the installation frame, rotating shafts being symmetrically installed on both sides of the spray duct, the rotating shafts being rotatably connected to the installation frame, one end of one rotating shaft being fixedly connected to the output shaft of a first motor, the first motor being fixedly installed on the installation frame, an opening being opened at one end of the spray duct, and a spray dust removal component being installed inside the spray duct;

[0006] The dust collection system includes a treatment trough located inside the spray duct, extending to the side of the spray duct near the opening. The treatment trough is located on the outer side of the inner cavity of the spray duct. A first nozzle assembly is installed on the inner wall of the treatment trough, comprising three first nozzles installed at equal angles on the inner wall of the spray duct. A second nozzle assembly is installed on the inner wall of the treatment trough, comprising three second nozzles installed at equal angles on the inner wall of the spray duct. The second nozzle assembly is located on the side of the first nozzle assembly near the opening. Both the first and second nozzles are connected to the interior of the treatment trough. An adjustment filter assembly is installed inside the treatment trough, and an adjustment control assembly is installed at the top of the spray duct.

[0007] Preferably, the spray duct has a circular plate inside, and a fixing rod is installed at equal angles on the outer side of the circular plate. The fixing rod is fixedly connected to the inner wall of the spray duct. The circular plate is located on the side of the second spray head group away from the first spray head group. A rotating shaft is rotatably installed inside the circular plate. The end of the rotating shaft away from the opening is fixedly connected to the output shaft of the second motor. The second motor is fixedly installed on the end of the spray duct away from the opening. Air inlets are evenly opened on the end of the spray duct away from the opening. Fan blades are installed at equal angles on the outer side of the rotating shaft. The fan blades are located on the side of the circular plate close to the opening.

[0008] Preferably, a flexible hose is installed at the bottom of the spray duct, the flexible hose is connected to the treatment tank, an installation groove is opened inside the housing, a pump body is installed inside the installation groove, an inlet pipe is installed on the pump body, an outlet pipe is installed on the pump body, a through groove is opened in the middle of the turntable, and the flexible hose passes through the through groove and connects to the end of the outlet pipe.

[0009] Preferably, the adjusting filter assembly includes a baffle installed inside the treatment tank. The baffle is in close contact with the side of the treatment tank near the inner cavity of the spray duct. A scraper is installed at the end of the baffle near the second motor. The outer wall of the scraper is in close contact with the inner wall of the treatment tank. A limiting plate is installed at the other end of the baffle. The limiting plate is in close contact with the side of the spray duct near the opening.

[0010] Preferably, the baffle has three first through slots installed at equal angles, the length of the first through slots being greater than the distance between the first nozzle group and the second nozzle group, and a first filter plate installed on the first through slots. The baffle also has three second through slots at equal angles, the second through slots being adapted to the second nozzle group, and a second filter plate installed on the second through slots. The first through slots and the second through slots are arranged alternately.

[0011] Preferably, an outer ring is installed on the side of the limiting plate away from the scraper, and a limiting groove is formed at the top of the outer ring. A first slot, a second slot, and a third slot are sequentially formed on the side of the limiting plate away from the scraper. The first slot, the second slot, and the third slot are all located above the limiting groove. The second slot and the third slot are respectively located on both sides of the first slot, and the second slot corresponds to one of the first through slots, and the third slot corresponds to an adjacent second through slot.

[0012] Preferably, the adjustment and control assembly includes a vertical plate installed at the top of the spray duct, a horizontal plate installed at the top of the vertical plate, an insert plate at the bottom of the horizontal plate, the bottom end of the insert plate being inserted into the interior of a limiting groove, toothed grooves equally spaced on one side of the insert plate, a gear on one side of the insert plate, the gear meshing with the toothed grooves, the gear being fixedly connected to the output shaft of a third motor, the third motor being fixedly installed on the vertical plate, guide grooves symmetrically opened inside the insert plate, guide blocks being movably installed inside the guide grooves, a guide rod being installed at the top of the guide block, the top of the guide rod extending through to the top of the insert plate, the guide rod being perpendicular to the bottom wall of the horizontal plate, and the guide rod being fixedly connected to the bottom wall of the horizontal plate.

[0013] Preferably, the insert plate is provided with a friction wheel on the side near the limiting plate, the bottom wall of the friction wheel is in close contact with the top wall of the limiting plate, the friction wheel is fixedly connected to the output shaft of the fourth motor, and the fourth motor is fixedly installed on the front of the insert plate.

[0014] Preferably, a fixing cylinder is installed on the front of the insert plate, the fixing cylinder is located below the fourth motor, a movable block is movably installed inside the fixing cylinder, a locking rod is installed on the side of the movable block near the limiting plate, the locking rod is engaged with the first locking groove, a spring is installed on the side of the movable block away from the limiting plate, a magnetic block is installed on the movable block, an electromagnet is installed at the end of the fixing cylinder away from the limiting plate, the electromagnet is connected to an external power supply, and the electromagnet is magnetically connected to the magnetic block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) In this invention, a first nozzle group and a second nozzle group are provided on the inner wall of the spray duct. When the baffle rotates to the position where the first through groove corresponds to the first nozzle group and the second nozzle group, both the first nozzle group and the second nozzle group spray water mist towards the inner cavity of the spray duct for spraying. When the baffle rotates to the position where the second through groove corresponds to the second nozzle group, the second nozzle group sprays water mist towards the inner cavity of the spray duct, thereby reducing the spray intensity and facilitating the adjustment of the spray intensity and the dust removal effect.

[0017] (2) The invention has a first filter plate installed on the first channel and a second filter plate installed on the second channel. When water enters the first nozzle group and the second nozzle group, the water flow needs to pass through the first filter plate and the second filter plate to filter the water, thereby preventing the first nozzle group and the second nozzle group from being blocked and improving the spraying smoothness. At the same time, when the insert plate is disengaged from the limiting groove, the baffle can be removed for easy and timely cleaning, further improving the spraying smoothness.

[0018] (3) The invention controls the rotation direction of the friction wheel by contacting the top wall of the limiting plate, thereby controlling the rotation direction of the baffle. This facilitates the control of the position of the first and second through slots and the adjustment of the spray intensity. After adjustment, the locking rod can engage with the first, second, or third locking slot at the corresponding position to fix the baffle and improve the spray stability. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1This is a schematic diagram of the dust removal device for bridge construction according to the present invention;

[0022] Figure 2 This is a schematic diagram of the box structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the spray duct structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the spray duct of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the adjustable filter assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the adjustment and control component structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the insert structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the fixed cylinder structure of the present invention;

[0029] In the diagram: 1. Movable base; 2. Housing; 3. Rotating slot; 4. Turntable; 5. Mounting bracket; 6. Spray duct; 7. First motor; 8. Mounting slot; 9. Pump body; 10. Water outlet pipe; 11. Water inlet pipe; 12. Spray dust removal assembly; 1201. Circular plate; 1202. Fixed rod; 1203. Rotating shaft; 1204. Fan blade; 1205. Second motor; 1206. Air inlet; 1207. Treatment tank; 1208. Flexible hose; 1209. First nozzle assembly; 1210. Second nozzle assembly; 13. Adjustable filter assembly; 1301. Baffle; 1302. Scraper; 1303. Limiting plate; 1304. First through slot; 1305. First filter. Plate; 1306, Second through groove; 1307, Second filter plate; 1308, Outer ring; 1309, Limiting groove; 1310, First slot; 1311, Second slot; 1312, Third slot; 14, Adjustment control assembly; 1401, Vertical plate; 1402, Horizontal plate; 1403, Insert plate; 1404, Gear groove; 1405, Gear; 1406, Third motor; 1407, Guide groove; 1408, Guide block; 1409, Guide rod; 1410, Fourth motor; 1411, Friction wheel; 1412, Fixed cylinder; 1413, Movable block; 1414, Locking rod; 1415, Spring; 1416, Magnetic block; 1417, Electromagnet. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Example 1, by Figures 1-8 The present invention includes a movable base 1, a housing 2 mounted on the top of the movable base 1, a rotating groove 3 opened on the top of the housing 2, a turntable 4 rotatably mounted inside the rotating groove 3, a mounting frame 5 mounted on the top of the turntable 4, a spray duct 6 mounted on the mounting frame 5, rotating shafts symmetrically mounted on both sides of the spray duct 6, the rotating shafts being rotatably connected to the mounting frame 5, one end of one rotating shaft being fixedly connected to the output shaft of a first motor 7, the first motor 7 being fixedly mounted on the mounting frame 5, an opening opened at one end of the spray duct 6, and a spray dust removal assembly 12 installed inside the spray duct 6;

[0032] The spray dust removal assembly 12 includes a treatment trough 1207 formed inside the spray duct 6. The treatment trough 1207 extends to the side of the spray duct 6 near the opening and is located on the outer side of the inner cavity of the spray duct 6. A first nozzle assembly 1209 is installed on the inner wall of the treatment trough 1207. The first nozzle assembly 1209 includes three first nozzles installed at equal angles on the inner wall of the spray duct 6. A second nozzle assembly 1210 is installed on the inner wall of the treatment trough 1207. The system includes three second nozzles mounted at equal angles on the inner wall of the spray duct 6. The second nozzle group 1210 is located on the side of the first nozzle group 1209 near the opening. Both the first and second nozzles are connected to the interior of the treatment tank 1207. An adjustable filter assembly 13 is installed inside the treatment tank 1207. An adjustable control assembly 14 is installed at the top of the spray duct 6. A circular plate 1201 is provided inside the spray duct 6. Fixing rods 1202 are mounted at equal angles on the outer side of the circular plate 1201. 202 is fixedly connected to the inner wall of the spray duct 6. The circular plate 1201 is located on the side of the second nozzle group 1210 away from the first nozzle group 1209. A rotating shaft 1203 is rotatably mounted inside the circular plate 1201. The end of the rotating shaft 1203 away from the opening is fixedly connected to the output shaft of the second motor 1205. The second motor 1205 is fixedly mounted on the end of the spray duct 6 away from the opening. Air inlets 1206 are evenly distributed on the end of the spray duct 6 away from the opening. The rotating shaft 1203... Fan blades 1204 are installed at equal angles on the outer side. The fan blades 1204 are located on the side of the circular plate 1201 near the opening. A hose 1208 is installed at the bottom of the spray duct 6. The hose 1208 is connected to the treatment tank 1207. An installation groove 8 is opened inside the housing 2. A pump body 9 is installed inside the installation groove 8. An inlet pipe 11 is installed on the pump body 9. An outlet pipe 10 is installed on the pump body 9. A through groove is opened in the middle of the turntable 4. The hose 1208 passes through the through groove and connects to the end of the outlet pipe 10.

[0033] The adjustable filter assembly 13 includes a baffle 1301 installed inside the treatment tank 1207. The baffle 1301 is in close contact with the side of the treatment tank 1207 near the inner cavity of the spray duct 6. A scraper 1302 is installed at one end of the baffle 1301 near the second motor 1205. The outer wall of the scraper 1302 is in close contact with the inner wall of the treatment tank 1207. A limiting plate 1303 is installed at the other end of the baffle 1301. The limiting plate 1303 is in close contact with the side of the spray duct 6 near the opening. Three first through slots 1304 are installed at equal angles on the baffle 1301. The length of the first nozzle assembly 1209 is greater than the distance between the second nozzle assembly 1210. A first filter plate 1305 is installed on the first through groove 1304. Three second through grooves 1306 at equal angles are installed on the baffle 1301. The second through grooves 1306 are adapted to the second nozzle assembly 1210. A second filter plate 1307 is installed on the second through groove 1306. The first through groove 1304 and the second through groove 1306 are staggered. An outer ring 1308 is installed on the side of the limiting plate 1303 away from the scraper 1302. A limiting groove 1309 is opened at the top of the outer ring 1308. On the side of the limiting plate 1303 away from the scraper 1302, a first slot 1310, a second slot 1311, and a third slot 1312 are sequentially provided. The first slot 1310, second slot 1311, and third slot 1312 are all located above the limiting groove 1309. The second slot 1311 and third slot 1312 are respectively located on both sides of the first slot 1310. The second slot 1311 corresponds to one of the first through slots 1304, and the third slot 1312 corresponds to an adjacent second through slot 1306. The inner wall of the spray duct 6 is provided with a first... When the baffle 1301 rotates to the position where the first through slot 1304 corresponds to the first nozzle group 1209 and the second nozzle group 1210, both the first nozzle group 1209 and the second nozzle group 1210 spray water mist into the inner cavity of the spray duct 6 for spraying. When the baffle 1301 rotates to the position where the second through slot 1306 corresponds to the second nozzle group 1210, the second nozzle group 1210 sprays water mist into the inner cavity of the spray duct 6, thereby reducing the spray intensity and facilitating the adjustment of the spray intensity and the dust removal effect.

[0034] The adjustment and control assembly 14 includes a vertical plate 1401 mounted on the top of the spray duct 6. A horizontal plate 1402 is mounted on the top of the vertical plate 1401. An insert plate 1403 is located below the horizontal plate 1402. The bottom end of the insert plate 1403 is inserted into the interior of the limiting groove 1309. Gear grooves 1404 are equidistantly opened on one side of the insert plate 1403. A gear 1405 is provided on one side of the insert plate 1403. The gear 1405 meshes with the gear grooves 1404. The gear 1405 is fixedly connected to the output shaft of the third motor 1406. The third motor 1406 is fixedly mounted on the vertical plate 1401. Guide grooves 1407 are symmetrically opened inside the insert plate 1403. A guide block 1408 is movably installed inside the guide groove 1407. A guide is installed on the top of the guide block 1408. A guide rod 1409 extends from its top end to the top of the insert plate 1403. The guide rod 1409 is perpendicular to the bottom wall of the horizontal plate 1402 and is fixedly connected to the bottom wall of the horizontal plate 1402. A friction wheel 1411 is provided on the side of the insert plate 1403 near the limiting plate 1303. The bottom wall of the friction wheel 1411 is in close contact with the top wall of the limiting plate 1303. The friction wheel 1411 is fixedly connected to the output shaft of the fourth motor 1410. The fourth motor 1410 is fixedly installed on the front of the insert plate 1403. A fixing cylinder 1412 is installed on the front of the insert plate 1403. The fixing cylinder 1412 is located below the fourth motor 1410. A movable block 1413 is movably installed inside the fixing cylinder 1412. The movable block 1413 is close to the limiting plate 1303. A locking lever 1414 is installed on one side of the position plate 1303, and the locking lever 1414 engages with the first locking groove 1310. A spring 1415 is installed on the side of the movable block 1413 away from the limiting plate 1303. A magnet 1416 is installed on the movable block 1413. An electromagnet 1417 is installed at the end of the fixed cylinder 1412 away from the limiting plate 1303. The electromagnet 1417 is connected to an external power supply and is magnetically connected to the magnet 1416. A first filter plate 1305 is installed on the first through groove 1304, and a second filter plate 1307 is installed on the second through groove 1306. When water enters the first nozzle group 1209 and the second nozzle group 1210, the water flow needs to pass through the first filter plate 1305 and the second filter plate 1307, thereby filtering the water. To prevent the first nozzle group 1209 and the second nozzle group 1210 from clogging and improve the smoothness of spraying, the baffle 1301 can be removed when the insert plate 1403 disengages from the limiting groove 1309, facilitating timely cleaning and further improving the smoothness of spraying. The friction wheel 1411 contacts the top wall of the limiting plate 1303, controlling the rotation direction of the friction wheel 1411, thereby controlling the rotation direction of the baffle 1301, facilitating the control of the position of the first through groove 1304 and the second through groove 1306, and facilitating the adjustment of the spray intensity. After adjustment, the locking rod 1414 can engage with the first locking groove 1310, the second locking groove 1311 or the third locking groove 1312 at the corresponding position, thereby fixing the baffle 1301 and improving the stability of spraying.

[0035] Working principle: During use, connect one end of the inlet pipe 11 to the water source, turn on the pump body 9, and drive the water from the water source through the outlet pipe 10 and the hose 1208 into the treatment tank 1207. When the first through groove 1304 on the baffle 1301 corresponds to the first nozzle group 1209 and the second nozzle group 1210, the water is filtered by the first filter plate 1305 and sprayed out from the first nozzle of the first nozzle group 1209 and the second nozzle of the second nozzle group 1210 into the inner cavity of the spray duct 6. At the same time, the second motor 12 is turned on. 05, causing the fan blades 1204 to rotate, thereby driving the external airflow through the air inlet 1206 towards the opening of the spray duct 6, and then driving the water mist outward from the opening of the spray duct 6 to spray to the outside, achieving dust removal. When the baffle 1301 rotates to the second through slot 1306 corresponding to the second nozzle group 1210, the water passes through the second filter plate 1307, and then the second nozzle of the second nozzle group 1210 sprays out towards the inner cavity of the spray duct 6, reducing the number of nozzles used, thereby adjusting the spray intensity.

[0036] When it is necessary to adjust the spray direction, rotate the turntable 4 to adjust the orientation of the opening of the spray duct 6. When it is necessary to adjust the spray angle, turn on the first motor 7 to make the spray duct 6 rotate longitudinally, thereby adjusting the angle of the spray duct 6.

[0037] In its original state, the locking lever 1414 engages with the first locking slot 1310, causing the baffle 1301 to close the first nozzle assembly 1209 and the second nozzle assembly 1210. When the first nozzle assembly 1209 and the second nozzle assembly 1210 need to be used together, the electromagnet 1417 is energized to attract the magnetic block 1416, causing the locking lever 1414 to disengage from the first locking slot 1310. The fourth motor 1410 is then energized, causing the friction wheel 1411 to rotate clockwise. The friction wheel 1411 contacts the top wall of the limiting plate 1303, thereby causing the baffle 1301 to rotate counterclockwise, thus rotating the first through slot 1304 to the position of the first through slot 1304. When the first nozzle group 1209 and the second nozzle group 1210 are in the corresponding positions, the insert plate 1403 is in contact with one end of the limiting groove 1309, the baffle 1301 stops rotating, and then the electromagnet 1417 is de-energized, causing the locking rod 1414 to move back under the elastic force of the spring 1415, so that the locking rod 1414 is engaged with the second locking groove 1311. When only the second nozzle group 1210 is needed, the fourth motor 1410 is supplied with reverse current, causing the baffle 1301 to rotate clockwise, so that the locking rod 1414 is engaged with the third locking groove 1312, thereby achieving the purpose of using only the second nozzle group 1210 and reducing the spray intensity.

[0038] When it is necessary to clean the inside of the treatment tank 1207, the third motor 1406 is turned on, causing the gear 1405 to rotate counterclockwise. The gear 1405 meshes with the tooth groove 1404 on one side of the insert plate 1403, thereby driving the insert plate 1403 to move upward, so that the insert plate 1403 disengages from the limiting groove 1309. Then the limiting plate 1303 is pulled outward. Since the scraper 1302 is in close contact with the inner wall of the treatment tank 1207, all impurities inside the treatment tank 1207 are discharged, which facilitates cleaning and avoids nozzle clogging.

Claims

1. A dust removal device for bridge construction, comprising a movable base (1), characterized in that: The top of the movable seat (1) is equipped with a box (2), and the top of the box (2) is provided with a rotating groove (3). A turntable (4) is rotatably installed inside the rotating groove (3). A mounting frame (5) is installed on the top of the turntable (4). A spray duct (6) is provided on the mounting frame (5). Rotating shafts are symmetrically installed on both sides of the spray duct (6). The rotating shafts are rotatably connected to the mounting frame (5). One end of one of the rotating shafts is fixedly connected to the output shaft of the first motor (7). The first motor (7) is fixedly installed on the mounting frame (5). An opening is provided at one end of the spray duct (6). A spray dust removal assembly (12) is installed inside the spray duct (6). The dust removal spray assembly (12) includes a treatment trough (1207) formed inside the spray duct (6). The treatment trough (1207) extends through to the side of the spray duct (6) near the opening. The treatment trough (1207) is located on the outer side of the inner cavity of the spray duct (6). A first nozzle assembly (1209) is installed on the inner wall of the treatment trough (1207). The first nozzle assembly (1209) includes three first nozzles installed at equal angles on the inner wall of the spray duct (6). The inner wall of the treatment trough (1207) is... A second nozzle assembly (1210) is installed on the wall. The second nozzle assembly (1210) includes three second nozzles that are installed at equal angles on the inner wall of the spray duct (6). The second nozzle assembly (1210) is located on the side of the first nozzle assembly (1209) near the opening. Both the first nozzle and the second nozzle are connected to the inside of the treatment tank (1207). An adjustment filter assembly (13) is installed inside the treatment tank (1207). An adjustment control assembly (14) is installed at the top of the spray duct (6). The adjustable filter assembly (13) includes a baffle (1301) installed inside the treatment tank (1207). The baffle (1301) is in close contact with the side of the treatment tank (1207) near the inner cavity of the spray duct (6). A scraper (1302) is installed at one end of the baffle (1301) near the second motor (1205). The outer wall of the scraper (1302) is in close contact with the inner wall of the treatment tank (1207). A limiting plate (1303) is installed at the other end of the baffle (1301). 1303) is closely attached to the side of the spray duct (6) near the opening. Three first through slots (1304) are installed at equal angles on the baffle (1301). The length of the first through slot (1304) is greater than the distance between the first nozzle group (1209) and the second nozzle group (1210). A first filter plate (1305) is installed on the first through slot (1304). Three second through slots (1306) are installed at equal angles on the baffle (1301). The second through slots (1306) are attached to the side of the spray duct (6) near the opening. 1210) is compatible with the second channel (1306) and the second filter plate (1307) is installed on the second channel (1306). The first channel (1304) and the second channel (1306) are staggered. An outer ring (1308) is installed on the side of the limiting plate (1303) away from the scraper (1302). A limiting groove (1309) is opened at the top of the outer ring (1308). A first slot (1310) and a second slot (1309) are opened in sequence on the side of the limiting plate (1303) away from the scraper (1302). 1311) and the third slot (1312), the first slot (1310), the second slot (1311) and the third slot (1312) are all located above the limiting slot (1309), the second slot (1311) and the third slot (1312) are respectively located on both sides of the first slot (1310), and the second slot (1311) corresponds to one of the first through slots (1304), and the third slot (1312) corresponds to an adjacent second through slot (1306); The adjustment control assembly (14) includes a vertical plate (1401) installed at the top of the spray duct (6), a horizontal plate (1402) installed at the top of the vertical plate (1401), an insert plate (1403) provided below the horizontal plate (1402), the bottom end of the insert plate (1403) being inserted into the interior of the limiting groove (1309), toothed grooves (1404) being equally spaced on one side of the insert plate (1403), and a gear (1405) being provided on one side of the insert plate (1403), the gear (1405) meshing with the toothed grooves (1404), and the gear (1405) engaging with the third motor (140) 6) The output shaft is fixedly connected, and the third motor (1406) is fixedly installed on the vertical plate (1401). The insert plate (1403) has symmetrically opened guide grooves (1407) inside. The guide block (1408) is movably installed inside the guide groove (1407). The top of the guide block (1408) is installed with a guide rod (1409). The top of the guide rod (1409) extends through to the top of the insert plate (1403). The guide rod (1409) is perpendicular to the bottom wall of the horizontal plate (1402). The guide rod (1409) is fixedly connected to the bottom wall of the horizontal plate (1402). Next, a friction wheel (1411) is provided on the side of the insert plate (1403) near the limiting plate (1303). The bottom wall of the friction wheel (1411) is in close contact with the top wall of the limiting plate (1303). The friction wheel (1411) is fixedly connected to the output shaft of the fourth motor (1410). The fourth motor (1410) is fixedly installed on the front of the insert plate (1403). A fixing cylinder (1412) is installed on the front of the insert plate (1403). The fixing cylinder (1412) is located below the fourth motor (1410). A movable block (1412) is movably installed inside the fixing cylinder (1412). 413), a locking rod (1414) is installed on the side of the movable block (1413) near the limiting plate (1303). The locking rod (1414) is engaged with the first locking groove (1310). A spring (1415) is installed on the side of the movable block (1413) away from the limiting plate (1303). A magnetic block (1416) is installed on the movable block (1413). An electromagnet (1417) is installed at the end of the fixed cylinder (1412) away from the limiting plate (1303). The electromagnet (1417) is connected to an external power source. The electromagnet (1417) is magnetically connected to the magnetic block (1416).

2. The dust removal device for bridge construction according to claim 1, characterized in that: The spray duct (6) is provided with a circular plate (1201) inside. A fixing rod (1202) is installed at equal angles on the outer side of the circular plate (1201). The fixing rod (1202) is fixedly connected to the inner wall of the spray duct (6). The circular plate (1201) is located on the side of the second nozzle group (1210) away from the first nozzle group (1209). A rotating shaft (1203) is rotatably installed inside the circular plate (1201). The end of the rotating shaft (1203) away from the opening is fixedly connected to the output shaft of the second motor (1205). The second motor (1205) is fixedly installed on the end of the spray duct (6) away from the opening. Air inlets (1206) are evenly opened on the end of the spray duct (6) away from the opening. Fan blades (1204) are installed at equal angles on the outer side of the rotating shaft (1203). The fan blades (1204) are located on the side of the circular plate (1201) close to the opening.

3. A dust removal device for bridge construction according to claim 1, characterized in that: The bottom end of the spray duct (6) is equipped with a hose (1208), which is connected to the treatment tank (1207). The box (2) has an installation groove (8) inside, and a pump body (9) is installed inside the installation groove (8). A water inlet pipe (11) is installed on the pump body (9), and a water outlet pipe (10) is installed on the pump body (9). A through groove is opened in the middle of the turntable (4), and the hose (1208) passes through the through groove and connects to the end of the water outlet pipe (10).

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