Dust falling device for construction site

Abstract

The invention relates to a dust falling device for a construction site, which comprises a drill rod, the outer end of the drill rod is fixedly connected with a water collecting ring, the outer end of the water collecting ring is rotatably connected with a sliding ring, the inner wall of the water collecting ring is provided with a plurality of sealing rings in a contact manner, the outer walls of the sealing rings are in contact with the sliding ring, the sliding ring is internally provided with a trapezoidal cavity, and the outer wall of the sliding ring is rotatably connected with an adjusting ring. The end, close to the adjusting ring, of the sliding ring is fixedly connected with a fixing ring, the inner wall of the fixing ring is fixedly connected with a driving mechanism, the outer wall of the sliding ring is fixedly connected with a plurality of first spherical hinge bases distributed in an array mode, and the first spherical hinge bases penetrate through the sliding ring to be communicated with the trapezoidal cavity. The atomizing nozzle and the flushing nozzle are combined to construct a three-dimensional water mist barrier, a drill bit area is completely wrapped during drilling operation, dust is effectively prevented from escaping to the working environment and the interior of equipment, and therefore the working environment is improved, equipment abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to a dust suppression device for use on a construction site, and in particular to a dust suppression device for use on a construction site applied in the technical field of tunnel construction. Background Art

[0002] The sources of dust pollution at construction sites are extensive, including various operations such as excavation, transportation, crushing, and stacking. The dust particles generated vary in size, remain suspended for a long time, and diffuse over a wide range. The impact on the environment and human body cannot be ignored. With the continuous improvement of my country's infrastructure, the number of railways and highways is increasing. In railway and highway construction projects, it is inevitable that construction needs to be carried out in tunnels. Since the tunnel is in a relatively closed space, a large amount of dust will be generated during the construction process. In order to reduce the damage of dust to the health of construction workers, ventilation and dust reduction equipment is needed.

[0003] Chinese invention patent CN113719312A discloses a spray dust suppression device for tunnel construction, the technical points of which are: comprising a tunnel body, a supply mechanism is arranged in the tunnel body, the supply mechanism includes a water tank, a plurality of dust removal mechanisms are arranged in the tunnel body, the dust removal mechanism includes a spray rack and a dust removal assembly, the dust removal assembly includes a spray part and an adjustment part, a control mechanism is arranged on the surface of the spray rack, the control mechanism includes a fixed part and a moving part, the fixed part is arranged at the highest point of the spray rack, and the moving part is arranged at the lowest point of the spray rack. By arranging the spray part and the adjustment part and the spray rack and the supply mechanism to cooperate with each other, efficient spray dust removal can be carried out in the tunnel, and by arranging a plurality of spray racks in the tunnel to be connected with the supply mechanism, comprehensive dust removal can be carried out on long-distance tunnels.

[0004] The present invention CN111561345A discloses a method and device for reducing dust during tunnel construction, including a base, two support seats are fixedly connected to the left side of the top of the base, and a spray structure is rotatably connected between the two opposite sides of the support seats. It relates to the field of tunnel engineering technology. The method and device for reducing dust during tunnel construction, by setting the spray structure, water enters the atomizing device, is converted into a water mist form, and then is respectively transported to two delivery pipes, and finally enters the inside of the spray barrel, at this time, the rotating blade can be driven to rotate by the rotation of the driving motor, and the wind force generated when the rotating blade rotates can blow out the water mist entering the inside of the spray barrel, wherein two delivery pipes are set to spray water mist at the same time, forming convection, increasing the flow rate of water mist, so that the water mist is concentrated in the same area, which is convenient for the rotating blade to blow out, and the water mist is relatively light, under the action of strong wind, it can be sprayed to a farther place around, thereby increasing the dust reduction effect.

[0005] A spray dust reduction device for tunnel construction solves the problem of dust reduction in long-distance tunnels. A method and device for dust reduction in tunnel construction enhance the dust reduction effect in the tunnel. However, there are still certain limitations, such as failure to suppress dust from the source and inability to reduce dust during drilling. It can only be used to reduce dust that escapes into the tunnel after tunnel excavation. The dust reduction effect is limited and cannot improve the working environment for construction workers during drilling.

[0006] Application Contents

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to reduce dust from the source with the drill bit as the center during the drilling and excavation construction process to prevent dust from entering the drilling equipment, while cooling the drill bit to promote chip removal and improve dust reduction and drilling efficiency.

[0008] In order to solve the above problems, a dust suppression device for construction sites is provided, comprising a drill rod, a water collecting ring is slidably connected to the outer end of the drill rod, a slip ring is rotatably connected to the outer end of the water collecting ring, a plurality of sealing rings are contacted and arranged on the inner wall of the water collecting ring, and the outer wall of the sealing ring is in contact with the slip ring, a trapezoidal cavity is provided inside the slip ring, an adjusting ring is rotatably connected to the outer wall of the slip ring, a fixing ring is fixedly connected to one end of the slip ring close to the adjusting ring, a driving mechanism is fixedly connected to the inner wall of the fixing ring, a plurality of first ball joint seats distributed in an array are fixedly connected to the outer wall of the slip ring, and the first ball joint seats penetrate the slip ring and are connected to the trapezoidal cavity, and the plurality of first The inner walls of the ball joint seats are rotatably connected to atomizing nozzles, the outer walls of the multiple atomizing nozzles are rotatably connected to an adjustment mechanism through a pin, and the other end of the adjustment mechanism is fixedly connected to the adjustment ring, the inner side of the lower end of the slip ring is fixedly connected to a plurality of second ball joint seats distributed in an array, the inner walls of the multiple second ball joint seats distributed in an array are rotatably connected to flushing nozzles, the outer walls of the flushing nozzles are fixedly connected to a telescopic mechanism, the outer wall of the slip ring is fixedly connected to a plurality of support rods, one end of the support rod away from the slip ring is fixedly connected to an external magnet, the end of the drill rod away from the slip ring is rotatably connected to a drill bit, and the outer end of the drill bit is fixedly connected to an internal magnet.

[0009] In the dust reduction device used at the above-mentioned construction site, the combination of source dust suppression design and adjustable angle atomization and flushing nozzles not only suppresses the spread of dust at the construction site in all directions, improves the working environment and protects equipment, but also realizes real-time and efficient cleaning, chip removal, lubrication and cooling of the drill bit, ensuring the safety and stability of the drilling process and the durability of mechanical properties.

[0010] As a further improvement of the present application, the adjustment mechanism includes a U-shaped connecting rod rotatably connected to the atomizing nozzle, the end of the U-shaped connecting rod away from the atomizing nozzle is rotatably connected to a right-angle rod, the corner of the right-angle rod is rotatably connected to a positioning rod, and one end of the positioning rod is fixedly connected to the slip ring.

[0011] As a further improvement of the present application, one end of the right-angle rod away from the atomizing nozzle is rotatably connected to a push-pull rod, and one end of the push-pull rod close to the adjustment ring is rotatably connected to a third ball joint seat, and the third ball joint seat is fixedly connected to the adjustment ring.

[0012] As a further improvement of the present application, the driving mechanism includes a first connecting rod fixedly connected to the adjusting ring, the outer end of the first connecting rod is rotatably connected to a right-angle joint, the inner wall of the right-angle joint is fixedly connected to a first hydraulic cylinder, and the outer wall of the first hydraulic cylinder is fixedly connected to the fixing ring.

[0013] As another improvement of the present application, the telescopic mechanism includes a second connecting rod fixedly connected to the flushing nozzle, the end of the second connecting rod away from the flushing nozzle is fixedly connected to a third connecting rod, the end of the third connecting rod away from the second connecting rod is fixedly connected to a support ring, the outer wall of the support ring is fixedly connected to a plurality of second hydraulic cylinders, and the other end of the second hydraulic cylinder is fixedly connected to the slip ring.

[0014] As another improved supplement of the present application, the atomizing nozzle includes a nozzle seat rotatably connected to the first ball joint seat, and a nozzle is fixedly connected to one end of the nozzle seat away from the first ball joint seat. The interior of the nozzle body is conical in design, and a through hole perpendicular to the drill rod is opened at the end.

[0015] As another improved supplement of the present application, a fluid channel is provided inside the flushing nozzle, and a spray hole is provided at the end of the fluid channel, and the diameter of the spray hole is between 2-5 mm.

[0016] As another improvement of the present application, the sealing ring adopts a rotary plug seal, which is composed of a rubber elastic body and one or more built-in spring-loaded lips.

[0017] As another improvement of the present application, with the direction parallel to the drill bit as a reference, the adjustment range of the adjustment mechanism for the atomizing nozzle is between 40°-140°, and the adjustment range of the telescopic mechanism for the flushing nozzle is between 0°-45°.

[0018] In summary, this solution has the following beneficial effects:

[0019] 1. Rotary spray dust reduction: Magnetic coupling technology enables the dust reduction device and the drill bit to rotate coaxially, forming a 360-degree rotary spray water cover with no dead angles, greatly improving the dust reduction coverage area and efficiency, and fundamentally suppressing the dust diffusion problem at the construction site.

[0020] 2. Dust suppression at the source: through atomizing nozzles and flushing nozzles, a three-dimensional water mist cover can be formed during drilling operations, surrounding the drill bit area in all directions, effectively preventing dust from flying into the working environment and inside the equipment, greatly improving the working environment, reducing equipment wear and extending the service life of the equipment.

[0021] 3. Drill bit cleaning and protection: The flushing nozzle uses continuous high-pressure water jets to clean the drill bit in real time, promote chip removal, and lubricate and cool the drill bit to ensure that the drill bit always maintains a good working condition, prevents mechanical performance degradation or failure due to overheating, and ensures a stable and efficient drilling process.

[0022] 4. Adjustable nozzle angle: To meet the operational requirements under different geological conditions, the spray angles of the atomizing nozzle and the flushing nozzle can be adjusted. They can be flexibly adjusted according to different soil conditions and actual needs. The spray angle can be accurately adjusted through the driving mechanism and the adjustment mechanism to ensure that the dust reduction and cleaning range are perfectly matched with actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the main view of this application;

[0024] Figure 2 It is the AA cross-sectional view of this application;

[0025] Figure 3 It is the BB cross-sectional view of this application;

[0026] Figure 4 It is the CC section view of this application;

[0027] Figure 5 It is the DD cross-sectional view of this application;

[0028] Figure 6 EE cross-sectional view of this application;

[0029] Figure 7 FF cross-sectional view of this application;

[0030] Figure 8 It is the GG cross-sectional view of this application;

[0031] Fig. 9 This is an enlarged view of H in this application;

[0032] Fig.10 It is an enlarged view of position J of this application;

[0033] Fig.11 A partial diagram of this application;

[0034] Fig.12 This is a schematic diagram of the overall structure of this application.

[0035] Description of the numbers in the figure:

[0036] 1. Drill rod; 2. Water collecting ring; 3. Slip ring; 4. Sealing ring; 5. Trapezoidal cavity; 6. Adjusting ring; 7. Fixing ring; 8. Driving mechanism; 9. First ball joint seat; 10. Atomizing nozzle; 11. Adjusting mechanism; 12. Second ball joint seat; 13. Flushing nozzle; 14. Telescopic mechanism; 15. Support rod; 16. External magnet; 17. Drill bit; 18. Internal magnet; 19. U-shaped connecting rod; 20. Right-angle rod; 21. Positioning rod; 22. Push-pull rod; 23. Third ball joint seat; 24. First connecting rod; 25. Right-angle joint; 26. First hydraulic cylinder; 27. Second connecting rod; 28. Third connecting rod; 29. ​​Support ring; 30. Second hydraulic cylinder; 31. Nozzle seat; 32. Nozzle. DETAILED DESCRIPTION

[0037] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0038] The first implementation method:

[0039] Figure 1-7 and Fig.12 The figure shows a dust suppression device for use at a construction site, comprising a drill rod 1, a water collecting ring 2 being slidably connected to the outer end of the drill rod 1, a slip ring 3 being rotatably connected to the outer end of the water collecting ring 2, a plurality of sealing rings 4 being provided in contact with the inner wall of the water collecting ring 2, and the outer wall of the sealing ring 4 being in contact with the slip ring 3, a trapezoidal cavity 5 being provided inside the slip ring 3, an adjusting ring 6 being rotatably connected to the outer wall of the slip ring 3, a fixing ring 7 being fixedly connected to one end of the slip ring 3 close to the adjusting ring 6, a driving mechanism 8 being fixedly connected to the inner wall of the fixing ring 7, a plurality of first ball joint seats 9 being fixedly connected to the outer wall of the slip ring 3 distributed in an array, and the first ball joint seats 9 passing through the slip ring 3 and being connected to the trapezoidal cavity 5, and the inner walls of the plurality of first ball joint seats 9 are all rotatably connected to the outer wall of the slip ring 3. An atomizing nozzle 10 is rotatably connected to the outer walls of the multiple atomizing nozzles 10 are rotatably connected to the adjusting mechanism 11 through a pin, and the other end of the adjusting mechanism 11 is fixedly connected to the adjusting ring 6; a plurality of second ball joint seats 12 distributed in an array are fixedly connected to the inner side of the lower end of the slip ring 3; the inner walls of the multiple second ball joint seats 12 distributed in an array are rotatably connected to the flushing nozzles 13; the outer wall of the flushing nozzle 13 is fixedly connected to a telescopic mechanism 14; a plurality of support rods 15 are fixedly connected to the outer wall of the slip ring 3; an end of the support rod 15 away from the slip ring 3 is fixedly connected to an external magnet 16; an end of the drill rod 1 away from the slip ring 3 is rotatably connected to a drill bit 17, and the outer end of the drill bit 17 is fixedly connected to an internal magnet 18.

[0040] When drilling is required at the construction site, the dust suppression device is fixedly installed on the drill rod 1, and the inner magnet 18 is installed at the position corresponding to the outer magnet 16. The principle of magnetic coupling is used. When the drill bit 17 rotates, the drill bit 17 drives the inner magnet 18 to rotate, the rotation of the inner magnet 18 drives the outer magnet 16 to rotate, and the rotation of the outer magnet 16 drives the entire dust suppression device to rotate, thereby realizing rotary spray dust suppression, expanding the dust suppression range, and improving the efficiency of dust suppression. When drilling begins, pressurized water is passed into the water collecting ring 2 through a pipeline, and the pressurized water passes through the water collecting ring 2 into the slip ring 3, and then passes through the slip ring 3 into the flow channel of the atomizing nozzle 10 and the flushing nozzle 13, and finally passes through the nozzle. Spraying, multiple atomizing nozzles 10 spray out fan-shaped water mist, the fan-shaped water mist forms a water mist cover to completely cover the drill bit 17 area, solving the problem of dust diffusion from the source, and also protecting the equipment, preventing dust from entering the inside of the drilling rig, aggravating the wear of the transmission device, and extending the service life of the equipment. The flushing nozzle 13 continuously sprays out high-pressure water columns to clean the drill bit 17, which helps to remove chips and prevent sticking. It also has the function of cooling and lubricating, preventing the drill bit 17 from overheating and causing the mechanical properties to deteriorate or even fail. The flushing nozzle 13 can rotate to flush the drill bit 17 and the hole wall in all directions without dead angles, thereby expanding the cleaning range.

[0041] When drilling in areas with different soil types, the working surface and dust source area will change. The spray angle of the atomizing nozzle 10 can be adjusted through the driving mechanism 8 and the adjusting mechanism 11, so as to perform atomization coverage more accurately. It can be flexibly adjusted according to factors such as rock hardness and crack distribution to ensure that the spray range always matches the actual needs. When the chip removal is not smooth or the rock hardness is relatively large, the flushing angle of the flushing nozzle 13 can be changed through the telescopic mechanism 14, which helps to more effectively remove the rock chips and dust generated by the drilling, avoid clogging the borehole, keep the borehole unobstructed, and further improve the drilling speed. The variable spray angle can flush and cool different parts of the drill bit to avoid overheating damage to the equipment and extend its service life.

[0042] The second implementation method:

[0043] Figure 8-12It is shown that the adjustment mechanism 11 includes a U-shaped connecting rod 19 rotatably connected to the atomizing nozzle 10, the end of the U-shaped connecting rod 19 away from the atomizing nozzle 10 is rotatably connected to a right-angle rod 20, and the right-angle rod 20 is rotatably connected to a positioning rod 21 at the corner, and one end of the positioning rod 21 is fixedly connected to the slip ring 3; the end of the right-angle rod 20 away from the atomizing nozzle 10 is rotatably connected to a push-pull rod 22, and the end of the push-pull rod 22 close to the adjusting ring 6 is rotatably connected to a third ball joint seat 23, and the third ball joint seat 23 is fixedly connected to the adjusting ring 6, the driving mechanism 8 includes a first connecting rod 24 fixedly connected to the adjusting ring 6, the outer end of the first connecting rod 24 is rotatably connected to a right-angle joint 25, the inner wall of the right-angle joint 25 is fixedly connected to a first hydraulic cylinder 26, and the outer wall of the first hydraulic cylinder 26 is fixedly connected to the fixing ring 7, the telescopic mechanism 14 includes a second connecting rod 27 fixedly connected to the flushing nozzle 13, the end of the second connecting rod 27 away from the flushing nozzle 13 is fixedly connected to a third connecting rod 28, and the third One end of the connecting rod 28 away from the second connecting rod 27 is fixedly connected to a support ring 29, and a plurality of second hydraulic cylinders 30 are fixedly connected to the outer wall of the support ring 29, and the other end of the second hydraulic cylinder 30 is fixedly connected to the slip ring 3. The atomizing nozzle 10 includes a nozzle seat 31 rotatably connected to the first ball joint seat 9, and the end of the nozzle seat 31 away from the first ball joint seat 9 is fixedly connected to a nozzle 32. The interior of the nozzle 32 body is conical in design, and a through hole perpendicular to the drill rod 1 is opened at the end. A fluid channel is opened inside the flushing nozzle 13, and a spray hole is opened at the end of the fluid channel. The diameter of the spray hole is between 2-5 mm. The sealing ring adopts a rotating pan-plug seal, which is composed of a rubber elastic body and one or more built-in spring-loaded lips. With the direction parallel to the drill bit 17 as a reference, the adjustment range of the adjustment mechanism 11 for the atomizing nozzle 10 is between 40°-140°, and the adjustment range of the telescopic mechanism 14 for the flushing nozzle 13 is between 0°-45°.

[0044] When the angle of the atomizing nozzle 10 needs to be adjusted, the driving mechanism 8 provides power. The power of the driving mechanism 8 comes from the water pressure and outputs power in a hydraulic manner. When the atomizing nozzle 10 needs to reduce the spray angle, the driving mechanism 8 causes the adjusting ring 6 to rotate counterclockwise. The counterclockwise rotation of the adjusting ring 6 drives the third ball joint seat 23 to rotate counterclockwise. The third ball joint seat 23 drives the push-pull rod 22 to move. The movement of the push-pull rod 22 drives the right-angle rod 20 to rotate clockwise. The clockwise rotation of the right-angle rod 20 causes the U-shaped connecting rod 19 to move forward. The U-shaped connecting rod 19 pushes the atomizing nozzle 10 to rotate. At this time, the spray angle of the atomizing nozzle 10 is reduced. , the formed water mist hood becomes smaller. On the contrary, if the dust is large, the water mist hood needs to be expanded. It is only necessary to operate the driving mechanism 8 to rotate the adjusting ring 6 clockwise. When the driving mechanism 8 is driven, the construction personnel control the first hydraulic cylinder 26. When reducing the spray angle, the construction personnel operate the control system to shrink the first hydraulic cylinder 26. When increasing the spray angle, it is only necessary to increase the stroke of the first hydraulic cylinder 26. When the flushing nozzle 13 needs to adjust the spray angle, it is only necessary for the construction personnel to operate the second hydraulic cylinder 30. When the stroke of the second hydraulic cylinder 30 increases, the second hydraulic cylinder 30 pushes the support ring 29 to move, and the support ring 29 moves The movement of the third connecting rod 28 drives the movement of the second connecting rod 27. The movement of the second connecting rod 27 causes the flushing nozzle 13 to rotate around the second ball joint seat 12, the spray angle of the flushing nozzle 13 decreases, and the flushing range increases. Conversely, when the stroke of the second hydraulic cylinder 30 decreases, the spray angle of the flushing nozzle 13 increases, and the flushing range decreases. The conical cavity design can guide the liquid passing through the nozzle, so that the medium gradually accelerates during the flow process and forms a vortex inside the cavity to improve the atomization effect. The conical cavity can convert pressure energy into kinetic energy, thereby increasing the injection speed and impact force. The cavity can also play a certain silencing role, reducing the noise generated when high-speed airflow or liquid flow passes through the nozzle. The diameter of the nozzle hole is 2-5mm, which is conducive to increasing the flushing pressure and achieving a better flushing effect with a small amount of water. The rotary plug seal adopted by the sealing ring 4 has the characteristics of high-efficiency sealing, wide adaptability and low friction coefficient. With the horizontal direction as a reference, the adjustment range of the atomizing nozzle 10 is between 40°-140°. If it exceeds this angle range, the purpose of dust reduction cannot be achieved. The adjustment range of the flushing nozzle 13 is between 0°-45°, so that the landing point of the water column does not exceed the length of the drill bit 17, thereby achieving an effective flushing effect.

[0045] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A dust suppression device for a construction site, characterized in that: The invention comprises a drill rod (1), the outer end of the drill rod (1) is slidably connected to a water collecting ring (2), the outer end of the water collecting ring (2) is rotatably connected to a slip ring (3), the inner wall of the water collecting ring (2) is contacted with a plurality of sealing rings (4), and the outer wall of the sealing ring (4) is in contact with the slip ring (3), a trapezoidal cavity (5) is provided inside the slip ring (3), the outer wall of the slip ring (3) is rotatably connected to an adjusting ring (6), one end of the slip ring (3) close to the adjusting ring (6) is fixedly connected to a fixing ring (7), the inner wall of the fixing ring (7) is fixedly connected to a driving mechanism (8), the outer wall of the slip ring (3) is fixedly connected to a plurality of first ball joint seats (9) distributed in an array, and the first ball joint seats (9) penetrate the slip ring (3) and are mutually connected with the trapezoidal cavity (5), and the inner walls of the plurality of first ball joint seats (9) are all rotatably connected to Atomizing nozzle (10), the outer walls of the plurality of atomizing nozzles (10) are rotatably connected to an adjusting mechanism (11) via a pin, and the other end of the adjusting mechanism (11) is fixedly connected to an adjusting ring (6); the inner side of the lower end of the slip ring (3) is fixedly connected to a plurality of second ball joint seats (12) distributed in an array, the inner walls of the plurality of second ball joint seats (12) distributed in an array are rotatably connected to a flushing nozzle (13); the outer wall of the flushing nozzle (13) is fixedly connected to a telescopic mechanism (14); the outer wall of the slip ring (3) is fixedly connected to a plurality of support rods (15), one end of the support rod (15) away from the slip ring (3) is fixedly connected to an external magnet (16); the end of the drill rod (1) away from the slip ring (3) is rotatably connected to a drill bit (17), and the outer end of the drill bit (17) is fixedly connected to an internal magnet (18).

2. A dust suppression device for use at a construction site according to claim 1, characterized in that: The adjustment mechanism (11) comprises a U-shaped connecting rod (19) rotatably connected to the atomizing nozzle (10); one end of the U-shaped connecting rod (19) away from the atomizing nozzle (10) is rotatably connected to a right-angle rod (20); a corner of the right-angle rod (20) is rotatably connected to a positioning rod (21); and one end of the positioning rod (21) is fixedly connected to the slip ring (3).

3. A dust suppression device for use at a construction site according to claim 2, characterized in that: One end of the right-angle rod (20) away from the atomizing nozzle (10) is rotatably connected to a push-pull rod (22), and one end of the push-pull rod (22) close to the adjustment ring (6) is rotatably connected to a third ball joint seat (23), and the third ball joint seat (23) is fixedly connected to the adjustment ring (6).

4. The dust suppression device for construction sites according to claim 1, characterized in that: The driving mechanism (8) comprises a first connecting rod (24) fixedly connected to the adjusting ring (6); the outer end of the first connecting rod (24) is rotatably connected to a right-angle joint (25); the inner wall of the right-angle joint (25) is fixedly connected to a first hydraulic cylinder (26); and the outer wall of the first hydraulic cylinder (26) is fixedly connected to the fixing ring (7).

5. The dust suppression device for construction sites according to claim 1, characterized in that: The telescopic mechanism (14) comprises a second connecting rod (27) fixedly connected to the flushing nozzle (13); one end of the second connecting rod (27) away from the flushing nozzle (13) is fixedly connected to a third connecting rod (28); one end of the third connecting rod (28) away from the second connecting rod (27) is fixedly connected to a support ring (29); a plurality of second hydraulic cylinders (30) are fixedly connected to the outer wall of the support ring (29); and the other end of the second hydraulic cylinder (30) is fixedly connected to the slip ring (3).

6. The dust suppression device for construction sites according to claim 1, characterized in that: The atomizing nozzle (10) comprises a nozzle seat (31) rotatably connected to the first ball joint seat (9); one end of the nozzle seat (31) away from the first ball joint seat (9) is fixedly connected to a nozzle (32); the interior of the nozzle (32) body is conical in design, and a through hole perpendicular to the drill rod (1) is opened at the end.

7. The dust suppression device for construction sites according to claim 1, characterized in that: The flushing nozzle (13) has a fluid channel inside and a spray hole at the end of the fluid channel, and the diameter of the spray hole is between 2 and 5 mm.

8. The dust suppression device for construction sites according to claim 1, characterized in that: The sealing ring (4) is a rotary plug seal, which is composed of a rubber elastic body and one or more built-in spring-loaded lips.

9. The dust suppression device for construction sites according to claim 1, characterized in that: With the direction parallel to the drill bit (17) as a reference, the adjustment range of the adjustment mechanism (11) for the atomizing nozzle (10) is between 40° and 140°, and the adjustment range of the telescopic mechanism (14) for the flushing nozzle (13) is between 0° and 45°.

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