Water mist dust suppression device of sweeping machine

Abstract

The invention relates to the technical field of sweeper truck water mist dust suppression, in particular to a sweeper truck water mist dust suppression device which comprises a mist gun machine body, a rotating mechanism, a mist spraying mechanism and an axial flow fan, the rotating mechanism, the mist spraying mechanism and the axial flow fan are mounted on the mist gun machine body, and an adjusting mechanism is mounted on a connecting ring; when the spraying range of the spraying head needs to be adjusted in the radial direction according to the dust concentration, an operator can start a third driving part through a control system of the sweeping machine, the third driving part drives a driving gear to rotate, then a gear ring is driven to rotate on a fixing ring, and when the gear ring rotates, inner side clamping teeth drive a plurality of driven gears meshed with the gear ring to rotate; the driven gear is meshed with the rack on the sliding rail, so that the rack slides on the sliding rail, the rack drives the sealing rod to slide in the spraying pipe through the fixing plate, the spraying diameter needs to be reduced, the sealing rod moves towards the direction of the fixing disc, water spraying holes of part of the nozzles are shielded, the number of the nozzles participating in spraying is reduced, and then the spraying range is reduced; water mist waste is avoided, and the water-saving efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of water mist dust suppression technology for road sweepers, specifically a water mist dust suppression device for road sweepers. Background Technology

[0002] Water mist dust suppression devices for road sweepers are high-efficiency dust reduction equipment installed on road sweepers. They use high-pressure atomization technology to convert water into fine water mist particles, which combine with dust in the air and settle, thereby suppressing dust and improving air quality. The most common water mist dust suppression devices installed on road sweepers are fog cannons. Fog cannons are environmental protection equipment that uses high-pressure atomization technology to convert water into fine water mist particles and uses wind power to spray the water mist into the air over a long distance to adsorb and settle dust and improve air quality. They use a high-pressure pump to pressurize water to a certain pressure, and then use a specially designed atomizing nozzle to atomize water droplets into fine water mist particles with a diameter between 10 and 150 micrometers. These water mist particles have a large surface area and can quickly combine with dust particles in the air to achieve dust suppression.

[0003] However, currently, when the fog cannons installed on road sweepers suppress dust generated during road sweeping, a water pump sends water from the water tank to the nozzle for atomization, and a fan blows the water mist to the dust-generating area for dust suppression. Currently, the nozzles on the fog cannons are installed at equal intervals through a ring-shaped water pipe installed on the edge of the fog cannon's air outlet. The nozzles are single-layered, making it difficult to adjust the spray range of the nozzles. It is not convenient to adjust the spray range of the nozzles radially according to the dust concentration. When the dust is relatively small, it is inconvenient to reduce the spray diameter, resulting in water mist waste and low water-saving efficiency.

[0004] When the sweeper is cleaning one side of the roadside (such as the gap between the curb and the road surface), the fog cannon needs to be rotated to face the curb, and the elevation angle of the fog cannon also needs to be adjusted. When the sweeper is moving forward, there will be airflow blowing towards the rear of the vehicle. The outside of the fog cannon cylinder is not equipped with an outlet protection mechanism for the sprayed water mist. The water mist that has just been sprayed is easily blown away by the rearward airflow generated by the vehicle's movement, causing the water mist to be blown away or blown off course before reaching the designated position, thus reducing the dust suppression effect.

[0005] When a road sweeper generates a lot of dust, it is necessary to adjust the elevation angle of the cylinder. When the elevation angle of the cylinder increases, some water mist will flow back into the cylinder. Since there is no mechanism on the cylinder to collect the backflowing water mist, the water mist will collect and flow out of the cylinder, resulting in water waste. Summary of the Invention

[0006] To address the problems in the prior art, the present invention provides a water mist dust suppression device for road sweepers.

[0007] The technical solution adopted by this invention to solve its technical problem is: a water mist dust suppression device for a road sweeper, comprising a mist cannon body, a rotating mechanism mounted on the mist cannon body, a spraying mechanism, and an axial flow fan. The spraying mechanism includes a connecting ring, on which multiple slide rails are fixed in a circular array. Each of the multiple slide rails is fixedly connected to a slide bar by a nut. A spray pipe is fixed to each slide bar, and multiple nozzles are mounted on the spray pipe. An adjusting mechanism is mounted on the connecting ring. The adjusting mechanism includes a fixing ring, on which a fixing ring is fixedly connected. A toothed ring is rotatably connected to the fixing ring. The inner surface of the toothed ring... All outer sides are provided with locking teeth. A driving component three is installed on the side wall of the fog cannon body. The output end of the driving component three is keyed to a driving gear. The driving gear meshes with the outer locking teeth of the gear ring. The end of the connecting ring is equidistantly connected to multiple driven gears in a ring array. The driven gears mesh with the inner locking teeth of the gear ring. A rack is slidably connected to multiple slide rails. The multiple driven gears mesh with multiple racks respectively. The bottom surface of the rack is higher than the surface of the gear ring. A sealing rod is slidably connected inside multiple spray pipes. A fixing plate is fixedly connected between the end of the sealing rod and the rack in the same group.

[0008] Specifically, the spraying mechanism also includes a fixed plate, and the ends of the plurality of slide rails are fixedly connected to the fixed plate with a cylindrical structure. A water inlet pipe is fixedly connected to the fixed plate, and the water inlet pipe is connected to the plurality of spray pipes. The water inlet pipe passes through the center of the axial flow fan.

[0009] Specifically, the bottom surface of the slide bar is higher than the surface of the gear ring, and the thickness of the driven gear is greater than the thickness of the gear ring.

[0010] Specifically, the rotating mechanism includes two rotating shafts. The side wall of the fog cannon body is fixedly connected to the two rotating shafts. A bracket with a U-shaped structure is rotatably connected to the two rotating shafts. A rotating seat is fixedly connected to the bottom of the bracket. A support seat is rotatably connected to the bottom of the rotating seat. A protective frame is fixedly connected to the bottom of the support seat. A mounting plate is fixedly connected to the bottom of the protective frame by screws. A driving component is installed on the support seat. The output end of the driving component is connected to the rotating seat by a coupling.

[0011] Specifically, the rotating mechanism also includes a second driving component, which is rotatably connected between the fog cannon body and the rotating base.

[0012] Specifically, the fog cannon body is equipped with a windproof mechanism, which includes a clamp. The clamp is fixedly connected to the outside of the fog cannon body. Two rotating rods are rotatably connected to the clamp. A housing is fixedly connected between the two rotating rods. A protective plate is slidably connected inside the housing. The housing and the drive component three are arranged opposite to each other. Two drive components four are installed on the outside of the housing. The telescopic ends of the two drive components four are fixedly connected to the protective plate.

[0013] Specifically, the windbreak mechanism also includes torsion springs, with torsion springs wound around both rotating rods. One end of the torsion spring is fixedly connected to the rotating rod, and the other end of the torsion spring is fixedly connected to the outer shell. The cross-sections of the outer shell and the protective plate are both arc-shaped. Multiple baffles that abut against the inner wall of the outer shell are fixedly connected at equal intervals to the side wall of the fog cannon body.

[0014] Specifically, the bottom of the fog cannon body is provided with a recovery mechanism, which includes a flow interception groove. The inner circumference of the fog cannon body is provided with a flow interception groove with an arc-shaped cross-section. The bottom of the fog cannon body is provided with a recovery port communicating with the flow interception groove. The bottom of the fog cannon body is connected to a recovery pipe communicating with the recovery port. The recovery pipe is located on the bottom side of the rotating base.

[0015] Specifically, a collection bucket is fixedly connected to the rotating seat, the bottom end of the recycling pipe is connected to the collection bucket, a drain pipe is connected to the side wall of the collection bucket, a filter screen is fixedly connected inside the collection bucket, and filter cotton is placed on the filter screen.

[0016] Specifically, a cover plate is fixedly connected to the collection bucket by screws, a pressure rod is slidably connected to the cover plate, a pressure plate is fixedly connected to the bottom of the pressure rod, a spring is clamped between the pressure rod and the cover plate, and a roller is rotatably connected to the top of the pressure rod.

[0017] The beneficial effects of this invention are:

[0018] 1. The sweeper truck water mist dust suppression device of the present invention has an adjustment mechanism for adjusting the diameter of the water mist installed on the main body of the mist cannon. When it is necessary to adjust the spray range of the nozzle radially according to the dust concentration, the operator can start the drive component three through the control system of the sweeper truck. The drive component three drives the drive gear to rotate. Since the drive gear meshes with the outer teeth of the gear ring, it drives the gear ring to rotate on the fixed ring. When the gear ring rotates, its inner teeth drive multiple driven gears that mesh with it to rotate. The driven gears mesh with the rack on the slide rail, thereby realizing the rack sliding on the slide rail. The rack drives the sealing rod to slide inside the spray pipe through the fixed plate. When it is necessary to reduce the spray diameter, such as when the dust is small, the sealing rod moves towards the fixed plate to block part of the spray hole of the nozzle, reduce the number of nozzles participating in the spray, thereby reducing the spray range, avoiding water mist waste, and improving water saving efficiency.

[0019] 2. The sweeper vehicle water mist dust suppression device of the present invention has a fog cannon body installed on the side wall of the windbreak mechanism. When the sweeper vehicle is sweeping the road surface on one side, the fog cannon body needs to be adjusted to be opposite to the curb. When the fog cannon body is performing dust suppression operation, the sweeper vehicle will generate airflow that blows backwards due to its forward movement. The control system activates two drive components four. The telescopic ends of the drive components four extend and push the protective plate to slide inside the outer shell, so that the protective plate extends a longer distance to better block the backward airflow generated by the vehicle's movement, prevent the water mist from being blown away or blown off course, and improve the dust suppression effect.

[0020] 3. The sweeper water mist dust suppression device of the present invention includes a recovery mechanism installed between the adjustment mechanism and the mist cannon body. When the dust flies extremely high and the elevation angle of the mist cannon body increases, some water mist flows back into the mist cannon body. The returned water mist flows along the inner wall of the mist cannon body. Since the inner wall of the mist cannon body has an arc-shaped interception groove, the returned water mist flows into the interception groove and enters the recovery pipe through the recovery port connected to the interception groove. The recovery pipe guides the returned water mist to the collection bucket fixedly connected to the rotating seat. The filter screen and filter cotton inside the collection bucket filter the returned water mist and remove impurities. The filtered water is stored in the collection bucket and can be discharged into the water tank through the drain pipe connected to the side wall to avoid water waste. When the elevation angle of the mist cannon body decreases, the pressure rod is pressed, which can drive the spring to compress. The pressure plate further presses the filter cotton to facilitate water leakage on the filter cotton and prevent excessive impurities on the filter cotton from affecting water discharge. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection structure of the fog cannon body, bracket, and drive component 2 of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection structure of the fog cannon body, clamp, and slide rail of the present invention.

[0025] Figure 4 This is a schematic diagram of the rack, rack and gear ring connection structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection structure of the gear ring, driven gear, and slide rail of the present invention.

[0027] Figure 6 This is a schematic diagram of the connection structure of the slider, spray pipe, nozzle and fixing plate of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection structure of the fog cannon body, clamp, rotating rod and outer shell of the present invention;

[0029] Figure 8 This is a schematic diagram of the connection structure of the pressure plate, filter cotton and filter screen of the present invention.

[0030] In the diagram: 1. Fog cannon body; 2. Rotating mechanism; 201. Rotating shaft; 202. Bracket; 203. Rotating seat; 204. Support seat; 205. Protective frame; 206. Drive component one; 207. Mounting plate; 208. Drive component two; 3. Spraying mechanism; 301. Connecting ring; 302. Slide rail; 303. Spray pipe; 304. Water inlet pipe; 305. Nozzle; 306. Sliding strip; 307. Nut; 308. Fixing plate; 4. Adjusting mechanism; 401. Drive component three; 402. Fixing ring; 403. Gear ring; 404. Drive gear; 405. 406. Driven gear; 407. Rack; 408. Sealing rod; 409. Fixing plate; 500. Recycling mechanism; 501. Recycling pipe; 502. Collection bucket; 503. Drain pipe; 504. Intercepting trough; 505. Recycling port; 506. Filter screen; 507. Filter cotton; 508. Pressure plate; 509. Cover plate; 510. Spring; 511. Roller; 512. Pressure rod; 601. Windbreak mechanism; 602. Housing; 603. Protective plate; 604. Clamp; 605. Torsion spring; 606. Drive component four; 607. Baffle column; 7. Axial flow fan. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figures 1-8As shown, the sweeper vehicle water mist dust suppression device of the present invention includes a fog cannon body 1, a rotating mechanism 2, a spraying mechanism 3, and an axial flow fan 7 mounted on the fog cannon body 1. The spraying mechanism 3 includes a connecting ring 301, on which multiple slide rails 302 are fixed in a circular array. Each slide rail 302 is fixedly connected to a slide bar 306 by a nut 307. A spray pipe 303 is fixed on the slide bar 306, and multiple nozzles 305 are mounted on the spray pipe 303. An adjusting mechanism 4 is mounted on the connecting ring 301. The adjusting mechanism 4 includes a fixing ring 402, on which the connecting ring 301 is fixedly connected. A rotating mechanism 7 is mounted on the fixing ring 402. A gear ring 403 is connected, with locking teeth on both its inner and outer sides. A drive component 3 401 is installed on the side wall of the fog cannon body 1. The output end of the drive component 3 401 is keyed to a drive gear 404, which meshes with the outer locking teeth of the gear ring 403. Multiple driven gears 405 are equidistantly connected in a ring array at the end of the connecting ring 301. The driven gears 405 mesh with the inner locking teeth of the gear ring 403. Racks 406 are slidably connected to multiple slide rails 302, and the multiple driven gears 405 mesh with the multiple racks 406 respectively. The bottom surface of the racks 406 is higher than the surface of the gear ring 403. The interiors of multiple spray pipes 303 are... A sliding connection is provided with a sealing rod 407, and a fixing plate 408 is fixedly connected between the end of the sealing rod 407 and the rack 406. The spraying mechanism 3 also includes a fixing plate 308, and a cylindrical fixing plate 308 is fixedly connected to the end of multiple slide rails 302. A water inlet pipe 304 is fixedly connected to the fixing plate 308, and the water inlet pipe 304 is connected to multiple spray pipes 303. The water inlet pipe 304 passes through the center of the axial flow fan 7. The bottom surface of the slide bar 306 is higher than the surface of the gear ring 403, and the thickness of the driven gear 405 is greater than the thickness of the gear ring 403. The rotating mechanism 2 includes two rotating shafts 201, and the side walls of the fog cannon body 1 are relatively fixed. The rotating mechanism 2 has two rotating shafts 201, and a U-shaped bracket 202 is rotatably connected to the two rotating shafts 201. A rotating seat 203 is fixedly connected to the bottom of the bracket 202, and a support seat 204 is rotatably connected to the bottom of the rotating seat 203. A protective frame 205 is fixedly connected to the bottom of the support seat 204, and a mounting plate 207 is fixedly connected to the bottom of the protective frame 205 by screws. A first driving component 206 is installed on the support seat 204, and the output end of the first driving component 206 is connected to the rotating seat 203 by a coupling. The rotating mechanism 2 also includes a second driving component 208, which is rotatably connected between the fog cannon body 1 and the rotating seat 203.Securely install the mounting plate 207 at the bottom of the protective frame 205 in a suitable position on the sweeper truck, ensuring the entire device is firmly fixed to prevent shaking or displacement during sweeper truck operation. Next, connect the water inlet pipe 304 to the water tank on the sweeper truck to ensure a smooth water supply. Simultaneously, connect the electrical components, including drive unit 1 206, drive unit 208, drive unit 3 401, and drive unit 4 606, to the power supply and control system of the sweeper truck, ensuring all components can operate normally. When the sweeper truck is cleaning the road surface, the control system activates drive unit 1 206 on the support base 204. Drive unit 1 206 is a servo... The output of the motor and drive component 206 drives the rotating seat 203 to rotate on the support seat 204 via a coupling, thereby driving the entire fog cannon body 1 to rotate horizontally, achieving horizontal angle adjustment and allowing the fog cannon to be aimed at the area requiring dust suppression. When the elevation angle of the fog cannon needs to be adjusted according to different situations, drive component 208 is activated. Drive component 208 is a cylinder, which drives the fog cannon body 1 to rotate around the rotating shaft 201 on the bracket 202, thereby achieving elevation angle adjustment. During the elevation angle adjustment process, if the cylinder elevation angle increases, the accuracy of the water mist spraying is adjusted again. When it is necessary to adjust the elevation angle according to the dust concentration... When adjusting the spray range of the radial nozzle 305, the operator can activate the drive unit 401 via the sweeper's control system. The drive unit 401 is a motor that drives the drive gear 404 to rotate. Since the drive gear 404 meshes with the outer teeth of the gear ring 403, it drives the gear ring 403 to rotate on the fixed ring 402. When the gear ring 403 rotates, its inner teeth drive multiple driven gears 405 to rotate. The driven gears 405 then mesh with the rack 406 on the slide rail 302, allowing the rack 406 to slide on the slide rail 302. The rack 406 is connected to the fixed plate 408. The sealing rod 407 slides within the spray pipe 303. When the spray diameter needs to be reduced, such as when dust is light, the sealing rod 407 moves towards the fixed plate 308, blocking part of the spray holes of the nozzles 305, reducing the number of nozzles 305 participating in the spray, thereby reducing the spray range, avoiding water waste, and improving water-saving efficiency. When the spray diameter needs to be expanded, such as when dust is heavy, the sealing rod 407 moves away from the fixed plate 308, increasing the number of nozzles 305 participating in the spray, expanding the spray range, enhancing the dust suppression effect, and the nut 307 on the slide rail 302 can be removed to replace the spray pipe 303.

[0033] Specifically, refer to Figure 1 , Figure 3 and Figure 7As shown, a windbreak mechanism 6 is installed on the main body 1 of the fog cannon. The windbreak mechanism 6 includes a clamp 603, which is fixedly connected to the outside of the main body 1. Two rotating rods 604 are rotatably connected to the clamp 603. A housing 601 is fixedly connected between the two rotating rods 604. A protective plate 602 is slidably connected inside the housing 601. The housing 601 is opposite to the driving component 401. Two driving components 606 are installed on the outside of the housing 601. The telescopic ends of the two driving components 606 are fixedly connected to the protective plate 602. The windbreak mechanism 6 also includes a torsion spring 605. A torsion spring 605 is wound around each of the two rotating rods 604. One end of the torsion spring 605 is fixedly connected to the rotating rod 604, and the other end of the torsion spring 605 is fixedly connected to the housing 601. The cross-sections of the housing 601 and the protective plate 602 are both arc-shaped. The side walls of the main body 1 of the fog cannon are fixed at equal intervals. Multiple baffles 607 are connected to the inner wall of the outer shell 601. When the sweeper sweeps the road surface on one side, the fog cannon body 1 needs to be adjusted to be opposite the curb. When the fog cannon body 1 is performing dust suppression, the sweeper will generate airflow that blows backwards. The control system activates two drive components 606. The drive components 606 are cylinders. The telescopic ends of the drive components 606 extend and push the protective plate 602 to slide inside the outer shell 601, so that the protective plate 602 extends a longer distance to better block the backward airflow generated by the vehicle, prevent the water mist from being blown away or blown off course, and improve the dust suppression effect. When the enhanced protection is not needed, the telescopic ends of the drive components 606 retract, and the protective plate 602 returns to its initial position under the action of the torsion spring 605. The torsion spring 605 can prevent the rack 406 from being blocked by the protective plate 602 when adjusting the spray diameter of the nozzle 305.

[0034] Specifically, refer to Figure 1 , Figure 2 and Figure 8As shown, the bottom of the fog cannon body 1 is provided with a recovery mechanism 5, which includes a flow intercepting groove 504. The inner circumference of the fog cannon body 1 is provided with a flow intercepting groove 504 with an arc-shaped cross-section. The bottom of the fog cannon body 1 is provided with a recovery port 505 communicating with the flow intercepting groove 504. The bottom of the fog cannon body 1 is connected to a recovery pipe 501 communicating with the recovery port 505. The recovery pipe 501 is located on the bottom side of the rotating seat 203. A collection bucket 502 is fixedly connected to the rotating seat 203. The bottom end of the recovery pipe 501 is connected to the collection bucket 502. The collection bucket 502 has a drain pipe 503 connected to its side wall. A filter screen 506 is fixedly connected inside the collection bucket 502, and filter cotton 507 is placed on the filter screen 506. A cover plate 509 is fixedly connected to the collection bucket 502 by screws. A pressure rod 512 is slidably connected to the cover plate 509. A pressure plate 508 is fixedly connected to the bottom of the pressure rod 512. A spring 510 is clamped between the pressure rod 512 and the cover plate 509. A roller 511 is rotatably connected to the top of the pressure rod 512. When the dust flies extremely high, the elevation angle of the fog cannon body 1 increases. When some water mist flows back into the fog cannon body 1, the returned water mist flows along the inner wall of the fog cannon body 1. Since the inner wall of the fog cannon body 1 is provided with an arc-shaped intercepting groove 504, the returned water mist flows into the intercepting groove 504 and enters the recovery pipe 501 through the recovery port 505 connected to the intercepting groove 504. The recovery pipe 501 guides the returned water mist to the collection bucket 502 fixedly connected to the rotating seat 203. The filter screen 506 and filter cotton 507 inside the collection bucket 502 will filter the returned water mist. The filter removes impurities, and the filtered water is stored in the collection bucket 502. It can be discharged into the water tank through the drain pipe 503 connected to the side wall to avoid water waste. When the elevation angle of the fog cannon body 1 is adjusted to a smaller value, the pressure rod 512 is pressed, which compresses the spring 510. The pressure plate 508 further presses the filter cotton 507 to facilitate water leakage on the filter cotton 507 and prevent excessive impurities on the filter cotton 507 from affecting water discharge if not cleaned in time. The roller 511 can reduce the friction between the pressure rod 512 and the fog cannon body 1.

[0035] In use, firstly, the mounting plate 207 at the bottom of the protective frame 205 is securely installed in a suitable position on the sweeper truck to ensure the entire device is firmly fixed and to prevent shaking or displacement during the sweeper truck's operation. Next, the water inlet pipe 304 is connected to the water tank on the sweeper truck to ensure a smooth water supply. Simultaneously, electrical components such as drive component one 206, drive component two 208, drive component three 401, and drive component four 606 are connected to the sweeper truck's power supply and control system to ensure that each component can operate normally. When the sweeper truck is cleaning the road surface, the control system activates the support base 204... Drive component 206, whose output end drives rotating seat 203 to rotate on support seat 204 via coupling, thereby driving the entire fog cannon body 1 to rotate horizontally, achieving horizontal angle adjustment and allowing the fog cannon to be aimed at the area requiring dust suppression. When the elevation angle of the fog cannon needs to be adjusted according to different situations, drive component 208 is activated. Drive component 208 drives fog cannon body 1 to rotate around rotating shaft 201 on bracket 202, thereby achieving elevation angle adjustment. During the elevation angle adjustment process, if the cylinder elevation angle increases, the accuracy of water mist spraying is readjusted. When it is necessary to adjust according to dust concentration... When adjusting the spray range of the nozzle 305 radially, the operator can activate the drive unit 401 through the sweeper truck's control system. The drive unit 401 drives the drive gear 404 to rotate. Since the drive gear 404 meshes with the outer teeth of the gear ring 403, it drives the gear ring 403 to rotate on the fixed ring 402. When the gear ring 403 rotates, its inner teeth drive the multiple driven gears 405 that mesh with it to rotate. The driven gears 405 then mesh with the rack 406 on the slide rail 302, thereby enabling the rack 406 to slide on the slide rail 302. The rack 406 drives the sealing rod 4 through the fixed plate 408. 07 slides within the spray pipe 303. When it is necessary to reduce the spray diameter, such as when the dust is relatively small, the sealing rod 407 moves towards the fixed plate 308 to block part of the spray holes of the nozzle 305, reducing the number of nozzles 305 participating in the spray, thereby reducing the spray range, avoiding water mist waste, and improving water-saving efficiency. When it is necessary to expand the spray diameter, such as when the dust is relatively large, the sealing rod 407 moves away from the fixed plate 308 to increase the number of nozzles 305 participating in the spray, expand the spray range, enhance the dust suppression effect, and the nut 307 on the slide rail 302 can be removed to replace the spray pipe 303.

[0036] Then, when the sweeper is cleaning one side of the road, the fog cannon body 1 needs to be adjusted to be opposite the curb. When the fog cannon body 1 is performing dust suppression, the sweeper will generate airflow that blows backwards as it moves forward. The control system will activate two drive components 606. The telescopic ends of the drive components 606 extend and push the protective plate 602 to slide inside the outer shell 601, so that the protective plate 602 extends a longer distance to better block the backward airflow generated by the vehicle, prevent the water mist from being blown away or blown off course, and improve the dust suppression effect. When the enhanced protection is not needed, the telescopic ends of the drive components 606 retract, and the protective plate 602 returns to its initial position under the action of the torsion spring 605. The torsion spring 605 can prevent the rack 406 from being blocked by the protective plate 602 and unable to expand outwards when adjusting the spray diameter of the nozzle 305.

[0037] Finally, when the dust rises to a very high altitude and the elevation angle of the fog cannon body 1 increases, some of the water mist flows back into the fog cannon body 1. The returning water mist flows along the inner wall of the fog cannon body 1. Because the inner wall of the fog cannon body 1 has an arc-shaped intercepting groove 504, the returning water mist flows into the intercepting groove 504 and enters the recovery pipe 501 through the recovery port 505 connected to the intercepting groove 504. The recovery pipe 501 guides the returning water mist to the collection bucket 502 fixedly connected to the rotating seat 203. The filter screen 506 and filter cotton 5 inside the collection bucket 502... 07 filters the return water mist to remove impurities. The filtered water is stored in the collection bucket 502 and can be discharged into the water tank through the drain pipe 503 connected to the side wall to avoid water waste. When the elevation angle of the fog cannon body 1 is adjusted to a smaller value, the pressure rod 512 is pressed, which compresses the spring 510. The pressure plate 508 further presses the filter cotton 507 to facilitate water leakage on the filter cotton 507 and prevent excessive impurities on the filter cotton 507 from affecting water discharge if not cleaned in time. The roller 511 can reduce the friction between the pressure rod 512 and the fog cannon body 1.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water mist dust suppression device for a road sweeper, comprising a fog cannon body (1), a rotating mechanism (2) mounted on the fog cannon body (1), a spraying mechanism (3), and an axial flow fan (7), wherein the spraying mechanism (3) comprises a connecting ring (301), wherein a plurality of slide rails (302) are fixed in a ring array on the connecting ring (301), wherein each of the plurality of slide rails (302) is fixedly connected to a slide strip (306) by a nut (307), wherein a spray pipe (303) is fixed on the slide strip (306), and a plurality of nozzles (305) are mounted on the spray pipe (303), characterized in that, An adjustment mechanism (4) is installed on the connecting ring (301); The adjusting mechanism (4) includes a fixed ring (402), which is fixedly connected to the connecting ring (301). A gear ring (403) is rotatably connected to the fixed ring (402). The gear ring (403) has locking teeth on both its inner and outer sides. A driving component three (401) is installed on the side wall of the fog cannon body (1). A driving gear (404) is keyed to the output end of the driving component three (401). The driving gear (404) meshes with the locking teeth on the outer side of the gear ring (403). The ends of the connecting ring (301) are arranged in a ring array and rotate at equal intervals. Multiple driven gears (405) are connected, and the driven gears (405) mesh with the inner teeth of the gear ring (403). Multiple slide rails (302) are slidably connected with racks (406), and the multiple driven gears (405) mesh with the multiple racks (406) respectively. The bottom surface of the rack (406) is higher than the surface of the gear ring (403). Multiple spray pipes (303) are slidably connected with sealing rods (407) inside. The ends of the sealing rods (407) in the same group are fixedly connected with the racks (406) with fixing plates (408).

2. The water mist dust suppression device for a road sweeper according to claim 1, characterized in that: The spray mechanism (3) also includes a fixed plate (308), and the ends of the multiple slide rails (302) are fixedly connected to the fixed plate (308) with a cylindrical structure. The fixed plate (308) is fixedly connected to the water inlet pipe (304), and the water inlet pipe (304) is connected to the multiple spray pipes (303). The water inlet pipe (304) passes through the center of the axial flow fan (7).

3. The water mist dust suppression device for a road sweeper according to claim 1, characterized in that: The bottom surface of the slide bar (306) is higher than the surface of the gear ring (403), and the thickness of the driven gear (405) is greater than the thickness of the gear ring (403).

4. The water mist dust suppression device for a road sweeper according to claim 1, characterized in that: The rotating mechanism (2) includes two rotating shafts (201). The side wall of the fog cannon body (1) is fixedly connected to two rotating shafts (201). A bracket (202) with a U-shaped structure is rotatably connected to the two rotating shafts (201). A rotating seat (203) is fixedly connected to the bottom of the bracket (202). A support seat (204) is rotatably connected to the bottom of the rotating seat (203). A protective frame (205) is fixedly connected to the bottom of the support seat (204). An installation plate (207) is fixedly connected to the bottom of the protective frame (205) by screws. A drive component (206) is installed on the support seat (204). The output end of the drive component (206) is connected to the rotating seat (203) by a coupling.

5. A water mist dust suppression device for a road sweeper according to claim 4, characterized in that: The rotating mechanism (2) also includes a second driving component (208), and the second driving component (208) is rotatably connected between the fog cannon body (1) and the rotating seat (203).

6. The water mist dust suppression device for a road sweeper according to claim 1, characterized in that: A windbreak mechanism (6) is installed on the main body (1) of the fog cannon. The windbreak mechanism (6) includes a clamp (603). The clamp (603) is fixedly connected to the outside of the main body (1). Two rotating rods (604) are rotatably connected to the clamp (603). A housing (601) is fixedly connected between the two rotating rods (604). A protective plate (602) is slidably connected inside the housing (601). The housing (601) is opposite to the driving component three (401). Two driving components four (606) are installed on the outside of the housing (601). The telescopic ends of the two driving components four (606) are fixedly connected to the protective plate (602).

7. A water mist dust suppression device for a road sweeper according to claim 6, characterized in that: The windbreak mechanism (6) also includes a torsion spring (605). The two rotating rods (604) are both wound with torsion springs (605). One end of the torsion spring (605) is fixedly connected to the rotating rod (604), and the other end of the torsion spring (605) is fixedly connected to the outer shell (601). The cross-section of the outer shell (601) and the protective plate (602) are both arc-shaped. The side wall of the fog cannon body (1) is fixedly connected with multiple baffles (607) that abut against the inner wall of the outer shell (601).

8. A water mist dust suppression device for a road sweeper according to claim 4, characterized in that: The bottom of the fog cannon body (1) is provided with a recycling mechanism (5), the recycling mechanism (5) includes a flow intercepting groove (504), the inner wall of the fog cannon body (1) is provided with a flow intercepting groove (504) with an arc-shaped cross section, the bottom of the fog cannon body (1) is provided with a recycling port (505) communicating with the flow intercepting groove (504), the bottom of the fog cannon body (1) is connected with a recycling pipe (501) communicating with the recycling port (505), and the recycling pipe (501) is located on the bottom side of the rotating seat (203).

9. A water mist dust suppression device for a road sweeper according to claim 8, characterized in that: A collection bucket (502) is fixedly connected to the rotating seat (203). The bottom end of the recycling pipe (501) is connected to the collection bucket (502). A drain pipe (503) is connected to the side wall of the collection bucket (502). A filter screen (506) is fixedly connected inside the collection bucket (502). Filter cotton (507) is placed on the filter screen (506).

10. A water mist dust suppression device for a road sweeper according to claim 9, characterized in that: A cover plate (509) is fixedly connected to the collection bucket (502) by screws. A pressure rod (512) is slidably connected to the cover plate (509). A pressure plate (508) is fixedly connected to the bottom of the pressure rod (512). A spring (510) is clamped between the pressure rod (512) and the cover plate (509). A roller (511) is rotatably connected to the top of the pressure rod (512).

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