A spray dust-settling device for construction sites

Abstract

This invention discloses a spray dust suppression device for construction sites, relating to the field of construction technology. It includes a main body with casters rotatably mounted at its bottom and support rods fixedly mounted at its top. A blower is positioned between the two support rods, and a crossbeam is fixedly mounted inside the blower. A motor is fixedly mounted on the back of the crossbeam, and a rotating shaft is fixedly mounted at the output end of the motor. Fan blades are fixedly mounted on the circumferential surface of the rotating shaft. The blower is equipped with a protective device that, after being reset by a flap, seals the internal passage of the blower, helping to reduce damage or pollution caused by long-term exposure to the external environment. This allows the equipment to maintain good condition for a longer period, reducing the frequency and cost of maintenance and repair, while also preventing the accumulation of dust or dirt on the equipment and keeping the work site clean.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building construction technology, in particular to a spray dust-settling device for building construction site. BACKGROUND

[0002] The spray dust-settling device for building construction site is a device that reduces dust pollution during construction by spraying water mist or other liquids, improving air quality. These devices are widely used in construction sites, mines, road construction and other places with a lot of dust to prevent dust from spreading, protect workers' health and comply with environmental regulations.

[0003] The patent with patent number CN217855265U relates to the field of building construction technology. The patent discloses a spray dust-settling device for building construction site, which belongs to the field of building construction technology. It includes a bottom plate, a universal wheel installed on the bottom surface of the bottom plate, two handrails fixedly connected to the upper surface of the bottom plate, a water tank fixedly connected to the upper surface of the bottom plate, a water inlet pipe fixedly connected to the upper surface of the water tank, a rotating mechanism provided on the outer surface of the water tank, and a support circular plate located above the water tank. It cooperates between the water tank, the rotating mechanism and the spray dust-settling mechanism, uses the water tank and the spray dust-settling mechanism to spray water mist on the construction site, uses the rotating mechanism to spray water mist at multiple angles when dust-settling on the construction site, which can effectively reduce the operation time and greatly improve the dust-settling efficiency compared to spraying water mist in one direction for dust-settling. The cooperation between the support cylinder and the track groove can support the support circular plate and make it rotate more stably.

[0004] In the above-mentioned patent, the water tank, the rotating mechanism and the spray dust-settling mechanism cooperate to spray water mist on the construction site using the water tank and the spray dust-settling mechanism. However, it is difficult to effectively protect the device after the device finishes work, which may cause improper storage of the device and make it unable to be used normally next time. SUMMARY

[0005] To overcome the shortcomings of the prior art, the present application provides a spray dust-settling device for building construction site, which solves the problems raised in the background art.

[0006] To achieve the above-mentioned purposes, the present application is implemented by the following technical solutions: a spray dust-settling device for building construction site, comprising a main body, a universal wheel rotatably installed at the bottom of the main body, a support rod fixedly installed at the top of the main body, a blowing device provided between the two support rods, a horizontal frame fixedly installed inside the blowing device, an electric motor fixedly installed at the back of the horizontal frame, a rotating shaft fixedly installed at the output end of the electric motor, a fan blade fixedly installed on the circumference of the rotating shaft, and a protection device provided inside the blowing device.

[0007] The protection device comprises a gear one, a rack one, a slide rail, a push plate, a fixed column and a flap, the gear one is fixedly installed at one end of the rotating shaft close to the crossbar, the rack one is slidably installed at the front of the crossbar, the slide rail is fixedly installed on the inner wall of the blowing device, the push plate is slidably installed inside the slide rail, the fixed column is fixedly installed on the inner wall of the blowing device, and the flap is rotatably installed on the circumferential surface of the fixed column. The rotating shaft rotates to drive the gear one to rotate, the gear one rotates to drive the rack one to move, the rack one moves to contact and push the push plate to move forward, the push plate moves to contact and push the flap to rotate, the flap rotates to open the internal passage of the blowing device, and the rack one is limited by the clamping rod and the clamping groove when it moves to the position.

[0008] The blowing device is provided with a cleaning device for cleaning the air inlet of the blowing device and a stabilizing device for stabilizing. The smooth flow of air is ensured by the cleaning device, and the device is kept in a stable position and angle by the stabilizing device.

[0009] According to the above technical scheme, the protection device further comprises a clamping rod, an inclined block one and a button, the clamping rod is slidably installed at the front of the crossbar, the inclined block one is slidably installed at the front of the crossbar, the button is slidably penetrated through the blowing device, the gear one is engaged with the rack one, one side of the rack one close to the clamping rod is provided with a clamping groove, and the side of the clamping rod and the inclined block one close to each other is provided with an inclined surface, the side of the inclined block one and the button close to each other is provided with an inclined surface, a spring one is arranged between the push plate and the inner wall of the blowing device, a spring two is arranged between the clamping rod and the inner wall of the blowing device, and a spring three is arranged between the button and the blowing device. The engagement ensures that the gear one can drive the rack one to move when rotating, the clamping groove ensures that the clamping rod can limit the rack one, the inclined surface ensures that the inclined block one can smoothly push the clamping rod when moving, the inclined surface ensures that the button can smoothly push the inclined block one when moving, the spring one ensures that the push plate can automatically reset, the spring two ensures that the clamping rod can automatically reset, and the spring three ensures that the button can automatically reset.

[0010] According to the above technical scheme, the cleaning device comprises an elastic telescopic rod one, a scraping rod and a collection box, the elastic telescopic rod one is fixedly installed at the back of the blowing device, the scraping rod is fixedly installed at the movable end of the elastic telescopic rod one, and the collection box is fixedly installed at the back of the blowing device. The rack one moves to contact and push the scraping rod to move, and the scraping rod moves to clean the impurities or garbage that may exist on the air inlet grille of the blowing device.

[0011] According to the technical scheme, the cleaning device further comprises a fixed block, a baffle, an inclined block two and a bottom plate, the fixed block is fixedly installed at the back of the collecting box, the baffle is slidably installed at the top of the collecting box, the inclined block two is fixedly installed at the top of the baffle, and the bottom plate is fixedly installed at the back of the scraping rod; the bottom plate starts to move downward when the scraping rod moves, the bottom plate moves to contact and push the inclined block two to start to move backward, the inclined block two moves to drive the baffle to start to move, the baffle moves to open the collecting port of the collecting box to collect, and the baffle closes the collecting port of the collecting box after work.

[0012] According to the technical scheme, the scraping rod is in contact with the blowing device, and the surface of the inclined block two in contact with the bottom plate is provided as an inclined surface; the inclined surface ensures that the scraping rod can achieve the cleaning effect when moving, the inclined surface ensures that the bottom plate can smoothly push the inclined block two when moving, and the spring four ensures that the inclined block two can be automatically reset.

[0013] According to the technical scheme, the stabilizing device comprises a sliding box, a handle, a rack two, a rotating column, a gear two and a blocking rod, the sliding box is slidably installed in the collecting box, the handle is fixedly installed at the left side of the sliding box, the rack two is fixedly installed at the left side of the baffle, two rotating columns are rotatably installed at the left side of the collecting box, the two rotating columns are drivingly connected through a transmission belt, the gear two is fixedly installed on the circumferential surface of the rotating column, and the blocking rod is fixedly installed at the front of the transmission belt; the baffle starts to move to drive the rack two to start to move, the rack two moves to drive the gear two to start to rotate, the gear two rotates to drive the rotating column to start to rotate, the rotating column rotates to drive the transmission belt to start to rotate, the transmission belt rotates to drive the blocking rod to start to move upward, and the blocking rod moves to limit the movement of the sliding box during work.

[0014] According to the technical scheme, the stabilizing device further comprises a sliding rod, a connecting rod, an elastic telescopic rod two and a supporting block, the sliding rod is slidably installed at the back of the collecting box, one end of the connecting rod is fixedly installed at the back of the transmission belt, the other end of the connecting rod is fixedly installed at the back of the sliding rod, the elastic telescopic rod two is fixedly installed at the bottom of the sliding rod, and the supporting block is fixedly installed at the movable end of the elastic telescopic rod two; the connecting rod starts to move downward when the transmission belt rotates, the connecting rod moves to drive the sliding rod to start to move downward, the sliding rod moves to drive the elastic telescopic rod two to start to move downward, and the elastic telescopic rod two moves to drive the supporting block to start to move downward.

[0015] According to the technical scheme, the rack two is engaged with the gear two, and the blocking rod is in contact with the collecting box; the engagement ensures that the rack two can drive the gear two to rotate when moving, and the contact ensures that the blocking rod can limit the movement of the sliding box during work.

[0016] The present application provides a spray dust falling device for construction site.

[0017] (1) The invention sprays water through the front of the blower via a water pipe. The sprayed water is blown into the air by the wind and becomes tiny particles, which can effectively adsorb dust in the air and cause it to settle, thereby significantly reducing the dust concentration at the construction site. At the same time, it can reduce the corrosion of equipment by dust and extend the service life of the equipment. After the flip plate is reset, the internal channel of the blower is sealed, which helps to reduce damage or pollution caused by long-term exposure to the external environment, so that the equipment can maintain a good condition for a longer time, thereby reducing the frequency and cost of maintenance and repair. At the same time, it can prevent dust or dirt from accumulating on the equipment, keep the work site clean, and help improve the overall management level of the construction site.

[0018] (2) The invention cleans impurities or garbage that may exist on the air intake grille on the back of the blower by moving the scraper, ensuring smooth airflow, thereby improving the overall efficiency of the spray dust suppression device, achieving better dust suppression effect, reducing dust pollution at the construction site, and reducing the frequency and workload of manual cleaning. It not only saves labor costs but also improves work efficiency, making the management of the construction site simpler and more efficient.

[0019] (3) This invention, by closing the collection port of the collection box with a baffle after the work is completed and opening the collection port during the work, can ensure that the collection equipment is more focused and efficient during the work. Closing the collection port after the work is completed can avoid unnecessary operation of the equipment, improve the overall efficiency of the garbage collection process, and reduce unnecessary time waste.

[0020] (4) The invention restricts the movement of the slide box during operation by moving the baffle, ensuring that the slide box does not move excessively during operation, preventing the slide box from accidentally sliding out due to other reasons and causing collection failure. At the same time, it can reduce the time and effort of the staff to frequently adjust the position, making the workflow smoother. The support block can ensure that the device maintains a stable position and angle during operation, so that the spray direction accurately covers the target area and improves the dust suppression effect. At the same time, the stable device can avoid accidents caused by equipment tipping or moving, ensuring the safety of construction personnel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of the blower device and cross frame structure of the present invention;

[0023] Figure 3 This is a cross-sectional schematic diagram of the protective device structure of the present invention;

[0024] Figure 4 For the present invention Figure 3Enlarged schematic diagram of section A in the middle;

[0025] Figure 5 This is a cross-sectional schematic diagram of the collection device structure of the present invention;

[0026] Figure 6 This is a cross-sectional schematic diagram of the stabilization device structure of the present invention;

[0027] Figure 7 This is a cross-sectional schematic diagram of the rack and gear structure of the present invention.

[0028] In the diagram: 1. Main body; 2. Casters; 3. Support rod; 4. Blower; 5. Horizontal frame; 6. Motor; 7. Shaft; 8. Fan blade; 9. Gear 1; 10. Rack 1; 11. Slide rail; 12. Push plate; 13. Fixed column; 14. Flip plate; 15. Locking rod; 16. Inclined block 1; 17. Button; 181. Elastic telescopic rod 1; 182. Scraper; 183. Collection box; 184. Fixed block; 185. Baffle; 186. Inclined block 2; 187. Base plate; 191. Sliding box; 192. Handle; 193. Rack 2; 194. Rotating column; 195. Gear 2; 196. Stop bar; 197. Slide rod; 198. Connecting rod; 199. Elastic telescopic rod 2; 1910. Support block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-7 One embodiment of the present invention is: a spray dust suppression device for construction sites, comprising a main body 1, a caster wheel 2 rotatably mounted on the bottom of the main body 1, a support rod 3 fixedly mounted on the top of the main body 1, a blowing device 4 disposed between the two support rods 3, a cross frame 5 fixedly mounted inside the blowing device 4, a motor 6 fixedly mounted on the back of the cross frame 5, a rotating shaft 7 fixedly mounted on the output end of the motor 6, fan blades 8 fixedly mounted on the circumferential surface of the rotating shaft 7, and a protective device disposed inside the blowing device 4;

[0031] The protective device includes gear 9, rack 10, slide rail 11, push plate 12, fixed column 13, and flap 14. Gear 9 is fixedly installed at one end of the rotating shaft 7 near the cross frame 5. Rack 10 is slidably installed at the front of the cross frame 5. Slide rail 11 is fixedly installed on the inner wall of the blower 4. Push plate 12 is slidably installed inside slide rail 11. Fixed column 13 is fixedly installed on the inner wall of the blower 4. Flip 14 is rotatably installed on the circumferential surface of fixed column 13. After the flap 14 is reset, the internal channel of the blower 4 is sealed, which helps to reduce damage or pollution caused by long-term exposure to the external environment, allowing the equipment to maintain good condition for a longer time, thereby reducing the frequency and cost of maintenance and repair. At the same time, it can prevent dust or dirt from accumulating on the equipment, keep the work site clean, and help improve the overall management level of the construction site.

[0032] The protective device also includes a locking rod 15, a ramp block 16, and a button 17. The locking rod 15 is slidably mounted on the front of the crossbeam 5, the ramp block 16 is slidably mounted on the front of the crossbeam 5, and the button 17 slides through the blower 4. Gear 9 meshes with rack 10. A slot is provided on the side of rack 10 near the locking rod 15. The sides of the locking rod 15 and ramp block 16 that are close to each other are both set as ramps. The sides of ramp block 16 and button 17 that are close to each other are both set as ramps. A spring is provided between the push plate 12 and the inner wall of the blower 4, and a spring is provided between the locking rod 15 and the inner wall of the blower 4. Spring 2 and Spring 3 are provided between button 17 and blower 4. Through meshing, spring 9 can drive rack 10 to move when it rotates. Through the slot, spring 15 can restrict rack 10. Through the inclined surface, spring 16 can smoothly push spring 15 when it moves. Through the inclined surface, spring 17 can smoothly push inclined block 16 when it moves. Spring 12 can achieve self-reset. Spring 2 can achieve self-reset. Spring 3 can achieve self-reset.

[0033] In this embodiment, the operation is as follows: First, the operator checks the device's working status to ensure it is functioning correctly. After confirming the device is working properly, the operator pushes the device to the designated area. After confirming the correct position, the casters 2 are fixed to prevent excessive displacement that could lead to operational errors. Then, the motor 6 is started, causing the rotating shaft 7 to rotate. The rotating shaft 7 drives the fan blades 8 to rotate, and the fan blades 8 begin blowing air. Simultaneously, the water pump pumps water, which is then sprayed through the water pipe at the front of the blower 4. The sprayed water is blown into the air and becomes tiny particles, effectively adsorbing dust in the air and causing it to settle, thus significantly reducing the dust concentration at the construction site. This also reduces dust corrosion on the equipment and extends its service life. Simultaneously, the rotating shaft 7 drives the gear 9 to rotate, which in turn drives the rack 10 to move. The rack 10 moves and contacts the push plate 12, which moves forward. The push plate 12 moves and contacts the flip plate 14, which rotates and opens the interior of the blower 4. In this case, after rack 10 moves into position, locking rod 15 contacts the slot, restricting the movement of rack 10. This ensures that rack 10 will not always be in contact with gear 9 during operation, preventing the shaft 7 from rotating improperly and hindering the normal operation of the device. After the work is completed, when the device needs to be retracted, the operator manually presses button 17, which pushes inclined block 16 to move. Inclined block 16 moves and contacts locking rod 15, causing locking rod 15 to move and disengage from push plate 12. Push plate 12 then moves and resets under the action of spring 1. Once reset, push plate 12 no longer pushes flap 14. Flap 14 then rotates and resets under the action of torsion spring. After flap 14 resets, the internal channel of the blower 4 is sealed, which helps reduce damage or pollution caused by long-term exposure to the external environment, allowing the equipment to maintain good condition for a longer period of time. This reduces the frequency and cost of maintenance and repair, and also prevents dust or dirt from accumulating on the equipment, keeping the work site clean and helping to improve the overall management level of the construction site.

[0034] Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, the back of the blower 4 is provided with a cleaning device for cleaning the air inlet of the blower 4 and a stabilizing device for stabilizing the air. The cleaning device ensures smooth airflow, and the stabilizing device ensures that the device maintains a stable position and angle.

[0035] The dust collection device includes a flexible telescopic rod 181, a scraper 182, and a collection box 183. The flexible telescopic rod 181 is fixedly installed on the back of the blower 4, the scraper 182 is fixedly installed on the movable end of the flexible telescopic rod 181, and the collection box 183 is fixedly installed on the back of the blower 4. By moving the scraper 182, impurities or garbage that may be present on the air intake grille on the back of the blower 4 can be cleaned, ensuring smooth airflow and thus improving the overall efficiency of the spray dust suppression device, achieving better dust suppression effect, reducing dust pollution at the construction site, and reducing the frequency and workload of manual cleaning. This not only saves labor costs but also improves work efficiency, making the management of the construction site simpler and more efficient.

[0036] The collection device also includes a fixing block 184, a baffle 185, a second inclined block 186, and a base plate 187. The fixing block 184 is fixedly installed on the back of the collection box 183, the baffle 185 is slidably installed on the top of the collection box 183, the second inclined block 186 is fixedly installed on the top of the baffle 185, and the base plate 187 is fixedly installed on the back of the scraper 182. By closing the collection port of the collection box 183 with the baffle 185 after the work is completed and opening the collection port during the work, the collection equipment can be ensured to be more focused and efficient during the work. Closing the collection port after the work is completed can avoid unnecessary operation of the equipment, improve the overall efficiency of the waste collection process, and reduce unnecessary time waste.

[0037] The scraper 182 contacts the blower 4. The sides of the inclined block 186 that contact the base plate 187 are both set as inclined surfaces. A spring 4 is set between the inclined block 186 and the fixed block 184. The contact ensures that the scraper 182 can achieve the cleaning effect when it moves. The inclined surface ensures that the base plate 187 can smoothly push the inclined block 186 when it moves. The spring 4 ensures that the inclined block 186 can achieve self-reset.

[0038] The stabilizing device includes a sliding box 191, a handle 192, a second rack 193, a rotating column 194, a second gear 195, and a stop bar 196. The sliding box 191 is slidably installed inside the collection box 183. The handle 192 is fixedly installed on the left side of the sliding box 191. The second rack 193 is fixedly installed on the left side of the baffle 185. The two rotating columns 194 are rotatably installed on the left side of the collection box 183 and are connected by a transmission belt. The second gear 195 is fixedly installed on the circumferential surface of the rotating column 194. The stop bar 196 is fixedly installed at the front of the transmission belt. The movement of the stop bar 196 restricts the movement of the sliding box 191 during operation, ensuring that the sliding box 191 does not move excessively during operation. This prevents the sliding box 191 from accidentally sliding out due to other reasons, resulting in collection failure. At the same time, it can reduce the time and effort of the staff to frequently adjust the position, making the workflow smoother.

[0039] The stabilizing device also includes a slide rod 197, a connecting rod 198, a second elastic telescopic rod 199, and a support block 1910. The slide rod 197 is slidably mounted on the back of the collection box 183. One end of the connecting rod 198 is fixedly mounted on the back of the transmission belt, and the other end of the connecting rod 198 is fixedly mounted on the back of the slide rod 197. The second elastic telescopic rod 199 is fixedly mounted on the bottom of the slide rod 197. The support block 1910 is fixedly mounted on the movable end of the second elastic telescopic rod 199. By moving the support block 1910, the device can maintain a stable position and angle during operation, ensuring that the spray direction accurately covers the target area and improves the dust suppression effect. At the same time, the stabilizing device can avoid accidents caused by equipment tipping or movement, ensuring the safety of construction personnel.

[0040] Rack 2 193 meshes with gear 2 195, and stop lever 196 contacts collection box 183. The meshing ensures that rack 2 193 can drive gear 2 195 to rotate when moving, and the contact ensures that stop lever 196 can restrict slide box 191 when working.

[0041] In this embodiment, as the rack 10 moves, it contacts and pushes the scraper 182 to begin moving. The scraper 182 moves to clean any impurities or debris that may be present on the air intake grille at the back of the blower 4, ensuring smooth airflow and thus improving the overall efficiency of the spray dust suppression device. This achieves better dust suppression and reduces dust pollution at the construction site. It also reduces the frequency and workload of manual cleaning, saving labor costs and improving work efficiency, making construction site management simpler and more efficient. As the scraper 182 moves, it drives the base plate 187 to begin moving downwards. The base plate 187 moves to contact and push the inclined block 186 to begin moving backwards. The inclined block 186 moves, driving the baffle 185 to begin moving. The baffle 185 moves to open the collection port of the collection box 183 for collection. After the work is completed, the baffle 185 closes the collection port of the collection box 183. Opening the collection port during operation ensures that the collection equipment is more focused and efficient during operation. Closing the collection port after operation avoids unnecessary operation of the equipment, improves the overall efficiency of the waste collection process, and reduces unnecessary time waste.

[0042] As baffle 185 moves, it drives rack 193 to move. Rack 193 then drives gear 195 to rotate, which in turn drives rotating column 194. Rotating column 194 drives transmission belt, which in turn drives stop lever 196 to move upwards. Stop lever 196 restricts the movement of slide box 191 during operation, preventing excessive movement and ensuring that slide box 191 does not accidentally slide out, leading to collection failure. This also reduces the time and effort required for frequent position adjustments by operators, making the workflow smoother. Simultaneously, the rotating transmission belt drives connecting rod 198 to move downwards. The movement of 98 causes the slide bar 197 to move downwards, which in turn causes the elastic telescopic rod 199 to move downwards. The movement of the elastic telescopic rod 199 then causes the support block 1910 to move downwards. The movement of the support block 1910 during operation ensures that the device maintains a stable position and angle, allowing the spray direction to accurately cover the target area and improve the dust suppression effect. At the same time, the stable device can prevent accidents caused by equipment tipping or movement, ensuring the safety of construction personnel. After the work is completed, the stop bar 196 no longer restricts the slide box 191. At this time, the staff can manually pull the handle 192 to pull the slide box 191 out of the collection box 183, and then dump the garbage collected inside the slide box 191 into the designated location.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spray dust suppression device for construction sites, comprising a main body, characterized in that: The bottom of the main body is rotatably mounted with casters, the top of the main body is fixedly mounted with a support rod, a blower is arranged between the two support rods, a cross frame is fixedly mounted inside the blower, a motor is fixedly mounted on the back of the cross frame, a rotating shaft is fixedly mounted on the output end of the motor, fan blades are fixedly mounted on the circumferential surface of the rotating shaft, and a protective device is arranged inside the blower. The protective device includes a gear, a rack, a slide rail, a push plate, a fixed column, and a flap. The gear is fixedly installed at one end of the rotating shaft near the cross frame. The rack is slidably installed at the front of the cross frame. The slide rail is fixedly installed on the inner wall of the blower. The push plate is slidably installed inside the slide rail. The fixed column is fixedly installed on the inner wall of the blower. The flap is rotatably installed on the circumferential surface of the fixed column. The protective device also includes a locking rod, a first inclined block, and a button. The locking rod is slidably mounted on the front of the crossbeam, the first inclined block is slidably mounted on the front of the crossbeam, and the button slides through the air blowing device. The first gear meshes with the first rack. The side of the first rack near the locking rod has a locking groove. The sides of the locking rod and the first inclined block that are close to each other are both set as inclined surfaces. The sides of the first inclined block and the button that are close to each other are both set as inclined surfaces. A first spring is provided between the push plate and the inner wall of the air blowing device. A second spring is provided between the locking rod and the inner wall of the air blowing device. A third spring is provided between the button and the air blowing device. When the gear rotates, it drives the rack to move. The rack moves and contacts the push plate, which then moves forward. The push plate moves and contacts the flap, which then rotates. The flap rotates and opens the internal channel of the blower. At this time, after the rack moves into place, the lever contacts the slot to restrict the movement of the rack, ensuring that the rack does not always contact and mesh with the gear during operation. When the device needs to be put away after the work is finished, the staff should manually press the button to make the inclined block move. The inclined block moves and contacts and pushes the lever to move. The lever moves and disengages from the push plate. Then the push plate moves and resets under the action of the spring. The push plate resets and no longer pushes the flap. Then the flap starts to rotate and reset under the action of the torsion spring. After the flap resets, the internal channel of the blower is sealed. The blower is equipped with a cleaning device for cleaning the air inlet of the blower and a stabilizing device for stabilizing the air inlet.

2. A spray dust suppression device for construction sites according to claim 1, characterized in that: The collection device includes a first elastic telescopic rod, a scraper, and a collection box. The first elastic telescopic rod is fixedly installed on the back of the blower, the scraper is fixedly installed on the movable end of the first elastic telescopic rod, and the collection box is fixedly installed on the back of the blower.

3. A spray dust suppression device for construction sites according to claim 2, characterized in that: The collection device also includes a fixed block, a baffle, a second inclined block, and a base plate. The fixed block is fixedly installed on the back of the collection box, the baffle is slidably installed on the top of the collection box, the second inclined block is fixedly installed on the top of the baffle, and the base plate is fixedly installed on the back of the scraper.

4. A spray dust suppression device for construction sites according to claim 3, characterized in that: The scraper bar contacts the blower, and the side of the inclined block two that contacts the base plate is set as an inclined surface. A spring four is provided between the inclined block two and the fixed block.

5. A spray dust suppression device for construction sites according to claim 4, characterized in that: The stabilizing device includes a sliding box, a handle, a second rack, a rotating column, a second gear, and a stop bar. The sliding box is slidably installed inside the collection box. The handle is fixedly installed on the left side of the sliding box. The second rack is fixedly installed on the left side of the baffle. The two rotating columns are rotatably installed on the left side of the collection box and are connected by a transmission belt. The second gear is fixedly installed on the circumferential surface of the rotating column, and the stop bar is fixedly installed at the front of the transmission belt.

6. A spray dust suppression device for construction sites according to claim 5, characterized in that: The stabilizing device also includes a slide rod, a connecting rod, a second elastic telescopic rod, and a support block. The slide rod is slidably mounted on the back of the collection box. One end of the connecting rod is fixedly mounted on the back of the transmission belt, and the other end of the connecting rod is fixedly mounted on the back of the slide rod. The second elastic telescopic rod is fixedly mounted on the bottom of the slide rod, and the support block is fixedly mounted on the movable end of the second elastic telescopic rod.

7. A spray dust suppression device for construction sites according to claim 6, characterized in that: The rack and pinion mesh with the gear, and the stop bar contacts the collection box.

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