Dust falling device for building environmental protection engineering construction
By adjusting the module and the elastic mechanism, the limitation of angle adjustment in existing dust suppression devices has been solved, realizing multi-directional flexible adjustment and stability of the mist cannon dust suppression cylinder, expanding the spray coverage area, and improving the dust suppression efficiency and equipment service life at the construction site.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-03-10
AI Technical Summary
The existing dust suppression devices for construction, such as fog cannons, have significant limitations in adjusting their angles, making it impossible to achieve continuous and wide-area horizontal coverage. They are particularly inconvenient to operate when there are multiple dust sources and when the wind direction changes. Furthermore, adjusting the equipment is time-consuming, labor-intensive, energy-intensive, and has poor stability.
The system employs an adjustment module, including a servo motor-driven rotating support and a rack and pinion lifting assembly, to achieve multi-directional angle adjustment of the fog cannon dust collector. Combined with an elastic mechanism and a limit device, it ensures synchronous and stable rotation of the fog cannon dust collector in both horizontal and vertical directions, simplifying the drive equipment and reducing costs.
It enables flexible multi-directional adjustment of the fog cannon dust suppression cylinder in confined spaces, expands the spray dust suppression range, improves dust suppression efficiency and stability, reduces energy consumption and equipment wear, and simplifies the operation process.
Smart Images
Figure CN121623486A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of building technology, in particular to a dust falling device for building environmental protection engineering construction. BACKGROUND
[0002] With the continuous advancement of urbanization and the increasing requirement of environmental protection, the dust control of construction site has become a key link of green construction management. The fog gun dust removal equipment, as a widely used dust falling device at present, mainly atomizes water into micron particles through a high-pressure pump, and sprays the water mist to the dust area by the airflow generated by the fan, so that the water mist and the dust particles are combined and settled, thereby achieving the purpose of inhibiting dust diffusion and purifying air. Such equipment is usually mounted on a movable carrying trolley or a fixed support to adapt to the dust falling needs of different construction areas.
[0003] However, in actual application process, the existing fog gun dust removal equipment has obvious limitations in azimuth adjustment. The common fog gun device on the market usually designs the spray head to swing up and down within a certain pitch angle range, or realizes limited horizontal rotation (such as 30° to 90° left and right) through the base. Although this adjustment method can cover the front fan-shaped area, it cannot realize continuous and large-scale coverage in the horizontal direction. When there are multiple scattered dust points in the construction site, or the dust diffusion caused by the change of wind direction needs to be dealt with, the operator often needs to frequently drive the carrying trolley to move and turn to adjust the general direction of the fog gun. This process not only consumes time and effort, but also is poor in space-limited and equipment-dense construction sites (such as inside the foundation pit, narrow lane or around the existing structure), has large adjustment radius, low positioning accuracy, and seriously affects the timeliness and effectiveness of dust falling operation.
[0004] In addition, the repeated start-stop and turning of the carrying trolley also increases energy consumption and aggravates component wear, and may cause equipment shaking due to uneven ground, affecting the stability of spraying. Although some improved devices try to expand the horizontal rotation angle by adding a slewing bearing or an electric rotating platform, they are still limited to non-continuous partial circular motion (such as 0°-270°), or have problems such as complex structure, high cost, difficult to guarantee rotation stability and sealing, and cannot fundamentally realize efficient and flexible all-around 360-degree dust falling without dead angle. SUMMARY
[0005] The present application provides a dust falling device for building environmental protection engineering construction, which can solve the following problems in the prior art: The adjustment angle of the current dust falling device fog gun machine has great limitations.
[0006] A dust falling device for building environmental protection engineering construction, comprising a walking trolley, wherein a fog gun dust removal cylinder is arranged on the walking trolley. The driving box is fixedly arranged on one side of the walking trolley, and an adjusting module is arranged on the driving box to adjust the multi-direction rotation of the fog gun dust removal cylinder. Both ends of the cylinder body of the fog gun dust removal cylinder are fixedly arranged with support shafts, both sides of the support shafts are rotatably connected with support frames, and both sides of the support frames are fixedly connected with a rotating support rotatably arranged on the driving box. The adjusting module comprises a first adjusting part and a second adjusting part, the first adjusting part is used for adjusting the rotation of the rotating support on the driving box, and the second adjusting part is used for adjusting the rotation of the support shaft on the support frame.
[0007] Preferably, the first adjusting part comprises a servo motor fixed in the driving box, and the driving end of the servo motor is fixedly connected with the rotating support.
[0008] Preferably, the second adjusting part comprises a gear fixed at the end of the support shaft, the gear is engaged with a rack, and the rack is connected with a lifting assembly for driving the lifting.
[0009] Preferably, the racks on both sides are fixedly connected with lifting frames through lifting shafts, a lifting plate is fixedly arranged on one side of the lifting frame, and the lifting plate is connected with the rotating support through an elastic component. The driving box is fixedly arranged with an annular seat, a plurality of groups of arc-shaped grooves are arranged in the annular seat in a circumferential array, a lifting rod is fixedly arranged at the bottom of the lifting frame, and a guide wheel rotatably arranged at the end of the lifting rod away from the lifting plate is in rolling abutment with the arc-shaped grooves.
[0010] Preferably, the elastic mechanism comprises a limiting cylinder fixed on the rotating support, a limiting disc is slidably embedded in the limiting cylinder, the limiting disc is fixedly connected with a limiting rod slidably inserted into the limiting cylinder, and one end of the limiting rod away from the limiting disc is fixedly connected with the lifting plate. One end of the limiting rod is fixedly connected with the lifting plate, and the other end is fixedly connected with the cylinder body of the limiting cylinder.
[0011] Preferably, a plurality of groups of limiting grooves are arranged in the inner wall of the limiting cylinder in a circumferential array, and a plurality of groups of limiting seats slidably engaged with the limiting grooves are fixedly arranged on the outer edge surface of the limiting disc.
[0012] Preferably, one end of the fog gun dust removal cylinder is arranged as a spraying end, and the other end is arranged as a blowing end.
[0013] Preferably, the blowing end is provided with a fan for sending air to the spraying end, an annular plate is arranged in the spraying end, an annular cavity is arranged in the annular plate, and a plurality of groups of atomizing nozzles are fixedly arranged in an annular array at the edge of the annular plate. The annular cavity is connected with a water conveying assembly for conveying water into the annular cavity.
[0014] Preferably, the water delivery assembly comprises a water storage tank fixed on the walking trolley, one end of the water storage tank is connected with a water delivery pipe, an annular water tank is fixedly arranged on the driving box, an annular water groove is formed in the annular water tank, and the other end of the water delivery pipe is communicated with the annular water groove.
[0015] Preferably, an annular cover plate is rotatably arranged on the annular water groove, a first drain pipe is fixedly arranged on the annular cover plate, the first drain pipe is communicated with the annular water groove through a water hole formed in the annular cover plate, a second drain pipe is slidably inserted into the first drain pipe, and the other end of the second drain pipe is communicated with the annular water tank through an extension pipe after penetrating through a through groove formed in the mist gun dust removal cylinder.
[0016] The application provides a dust falling device for building environmental protection engineering construction, which has the following beneficial effects: 1) The angle of the mist gun dust removal cylinder is adjusted in real time by the adjusting module to expand the spray dust falling range of the mist gun dust removal cylinder, so that the dust falling device can be applied in various special or narrow environments, and the angle of the mist gun dust removal cylinder can be adjusted in multiple directions without adjusting the direction of the walking trolley, so that the application range is wider; specifically, during the application of the dust falling device, the first adjusting part drives the rotating support to rotate on the driving box, the rotating support drives the mist gun dust removal cylinder to rotate in the horizontal direction in a circumferential direction through the support frame, so that the horizontal angle of the mist gun dust removal cylinder is adjusted; at the same time, during the horizontal angle adjustment, the second adjusting part drives the support shaft to rotate on the support frame, so that the angle of the mist gun dust removal cylinder in the vertical direction is adjusted, and the dust falling range of the mist gun dust removal cylinder is further expanded. 2) When the servo motor drives the rotating support to rotate, the rotating support drives the lifting rod and the guide wheel to move synchronously through the lifting plate and the lifting frame; during the movement of the guide wheel on the annular seat, based on the arrangement of the elastic mechanism, when the guide wheel moves to the position of the arc-shaped groove, the elastic mechanism drives the guide wheel and the lifting frame to descend; when the guide wheel moves away from the arc-shaped groove, the guide wheel and the lifting frame can synchronously ascend, so that the lifting frame is adjusted to reciprocatingly ascend and descend; based on this, during the circumferential rotation of the mist gun dust removal cylinder in the horizontal direction, the rotating support can synchronously adjust the reciprocating swing of the mist gun dust removal cylinder in the vertical direction through the arrangement of the annular seat and the guide wheel; the first adjusting part and the second adjusting part can realize stable cooperation, and the synchronization and stability of the adjustment of the mist gun dust removal cylinder are ensured. 3) During the rotation of the rotating support, the limiting cylinder drives the limiting disc to rotate synchronously through the limiting groove and the limiting seat; the limiting disc can synchronously drive the lifting plate and the lifting frame to stably rotate through the limiting rod. 4) The first adjusting part of the present application can drive the second drain pipe and the first drain pipe to rotate synchronously under the limiting effect of the through groove wall during the process of driving the fog gun dust removal cylinder to move in the horizontal direction, and the first drain pipe can drive the annular cover plate to rotate synchronously on the annular water tank, based on which, the fog gun dust removal cylinder of the present application will not affect the normal water conveying process of the water conveying assembly even in the process of rotating, and the normal dust falling effect of the fog gun dust removal cylinder can be effectively ensured. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A three-dimensional structure diagram of the dust falling device for building environmental protection engineering construction provided by the present application Figure One ; Figure 2 A three-dimensional structure diagram of the dust falling device for building environmental protection engineering construction provided by the present application Figure Two ; Figure 3 A structure diagram of the servo motor in the dust falling device for building environmental protection engineering construction provided by the present application Figure 4 A front view structure diagram of the dust falling device for building environmental protection engineering construction provided by the present application Figure 5 A cut plane structure diagram of the dust falling device for building environmental protection engineering construction provided by the present application Figure 6 A cut three-dimensional structure diagram of the dust falling device for building environmental protection engineering construction provided by the present application Figure 7 A structure diagram of the arc-shaped groove in the dust falling device for building environmental protection engineering construction provided by the present application Figure 8 A structure diagram of the arc-shaped groove in the dust falling device for building environmental protection engineering construction provided by the present application Figure 5 A structure diagram of the enlarged part at A in the dust falling device for building environmental protection engineering construction provided by the present application
[0018] Explanation of reference signs: 1. Walking trolley; 2. Water tank; 3. Drive housing; 4. Fog cannon dust collector; 5. Lifting shaft; 6. Annular water tank; 7. Annular seat; 301. Limiting cylinder; 302. Rotating support; 303. Limiting groove; 304. Limiting seat; 305. Limiting rod; 306. Telescopic spring; 307. Limiting disc; 401. Spray end; 402. Air blowing end; 403. Atomizing nozzle; 404. Annular plate; 405. Telescopic pipe; 406, support shaft; 407, support frame; 408, gear; 409, rack; 410, fan; 411, through groove; 501, lifting frame; 502, lifting plate; 503, water supply pipe; 504, servo motor; 601, annular cover plate; 602, first drain pipe; 603, second drain pipe; 604, guide wheel; 605, lifting rod; 606, annular water tank; 701, arc-shaped groove. Detailed Implementation
[0019] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.
[0020] Example 1
[0021] like Figures 1 to 4 As shown in the figure, an embodiment of the present invention provides a dust suppression device for construction environmental protection engineering, including a traveling trolley 1, on which a mist cannon dust suppression cylinder 4 is provided. Specifically, in this embodiment, the mist cannon dust suppression cylinder 4 is set on the traveling trolley 1. By setting the mist cannon dust suppression cylinder 4 on the traveling trolley 1, when dust suppression is carried out at the construction site, the traveling trolley 1 is moved to the position to be dusted, and then the mist cannon dust suppression cylinder 4 sprays dust to suppress it. It can be further improved that this embodiment can be equipped with an electric drive device in the traveling trolley 1 to automatically drive the traveling trolley 1 to move, without the need for manual adjustment, which is more labor-saving.
[0022] In this embodiment, a drive housing 3 is fixedly mounted on one side of the traveling trolley 1. The drive housing 3 is equipped with an adjustment module for adjusting the multi-directional rotation of the mist cannon dust removal cylinder 4. Specifically, by setting the adjustment module, the angle of the mist cannon dust removal cylinder 4 can be adjusted in real time during the dust suppression spraying process, thereby expanding the dust suppression spraying range of the mist cannon dust removal cylinder 4. This allows the dust suppression device of this embodiment to be applied in various special or confined spaces. Even without adjusting the direction of the traveling trolley 1, the angle of the mist cannon dust removal cylinder 4 can be adjusted in multiple directions through the adjustment module, making its application range wider.
[0023] As one embodiment of this example, the dust removal cylinder 4 of the fog cannon is fixedly provided with support shafts 406 at both ends of the cylinder body, and the two support shafts 406 are rotatably connected to the support frame 407 respectively. The two support frames 407 are fixedly connected to the rotating support 302 rotatably provided on the drive box 3. Specifically, the adjusting module comprises a first adjusting part and a second adjusting part, the first adjusting part is used for adjusting the rotation of the rotating support 302 on the driving box 3, and the second adjusting part is used for adjusting the rotation of the support shaft 406 on the support frame 407; it can be explained that in the application process of the dust falling device of the embodiment, the rotating support 302 is driven to rotate on the driving box 3 through the first adjusting part, the rotating support 302 can drive the fog gun dust removal cylinder 4 to rotate in the horizontal direction through the support frame 407, so as to adjust the horizontal angle of the fog gun dust removal cylinder 4, at the same time, in the process of adjusting the horizontal angle, the support shaft 406 can be driven to rotate on the support frame 407 through the second adjusting part, and then the angle of the fog gun dust removal cylinder 4 in the vertical direction is adjusted, so as to further increase the dust removal range of the fog gun dust removal cylinder 4.
[0024] Embodiment 2
[0025] Based on embodiment 1, please refer to Figures 1-3 The first adjusting part comprises a servo motor 504 fixed in the driving box 3, and the driving end of the servo motor 504 is fixedly connected with the rotating support 302; it can be explained that in the embodiment, the rotating support 302 can be driven to rotate on the driving box 3 by starting the servo motor 504, so as to realize the effect that the fog gun dust removal cylinder 4 rotates in the horizontal direction.
[0026] In the embodiment, the second adjusting part comprises a gear 408 fixed at the end of the support shaft 406, the gear 408 is engaged with a rack 409, and the rack 409 is connected with a lifting assembly for driving the lifting of the rack 409; it can be explained that in the embodiment, when the support shaft 406 is adjusted to rotate, the rack 409 can be driven to lift through the lifting assembly, and the support shaft 406 can be driven to rotate through the engagement with the gear 408 in the lifting process of the rack 409, and the fog gun dust removal cylinder 4 is driven to adjust the angle in the vertical direction through the support shaft 406.
[0027] As an embodiment of the embodiment, please refer to Figures 1-4 and Figure 7The two side racks 409 are fixedly connected with the lifting frame 501 through the lifting shaft 5. One side of the lifting frame 501 is fixedly arranged with a lifting plate 502. The lifting plate 502 is connected with the rotating support 302 through an elastic component. The driving box body 3 is fixedly arranged with an annular seat 7. A plurality of groups of arc-shaped grooves 701 are arranged in the annular seat 7 in a circumferential array. The lifting frame 501 is fixedly arranged with a lifting rod 605 at the bottom. The lifting rod 605 is rotatably arranged with a guide wheel 604 at the end away from the lifting plate 502, which is in rolling abutment with the arc-shaped grooves 701. It can be explained that when the servo motor 504 drives the rotating support 302 to rotate, the rotating support 302 can drive the lifting rod 605 and the guide wheel 604 to move synchronously through the lifting plate 502 and the lifting frame 501. In the process of the guide wheel 604 walking on the annular seat 7, based on the arrangement of the elastic mechanism, when the guide wheel 604 moves to the position of the arc-shaped groove 701, the elastic mechanism can drive the guide wheel 604 and the lifting frame 501 to descend. When the guide wheel 604 moves away from the arc-shaped groove 701, the guide wheel 604 and the lifting frame 501 can also synchronously ascend, thereby realizing the adjustment of the reciprocating lifting of the lifting frame 501. Based on this, in the process of driving the fog gun dust removal cylinder 4 to rotate in the horizontal direction in the circumferential direction, the rotating support 302 of the present embodiment can realize the synchronous adjustment effect of the reciprocating swinging of the fog gun dust removal cylinder 4 in the vertical direction through the arrangement of the annular seat 7 and the guide wheel 604. The present embodiment does not need to arrange other servo driving devices to adjust the swinging of the fog gun dust removal cylinder 4 in the vertical direction. Not only is the driving device simplified, but also the cost is reduced, so that the first adjusting part and the second adjusting part can realize the effect of stable cooperation, and the synchronization and stability of the adjustment of the fog gun dust removal cylinder 4 are ensured.
[0028] Specifically, please refer to Figures 2-6 and Figure 8 The elastic mechanism of the present embodiment includes a limiting cylinder 301 fixed on the rotating support 302. A limiting disc 307 is slidably embedded in the limiting cylinder 301. The limiting disc 307 is fixedly connected with a limiting rod 305 slidably inserted into the limiting cylinder 301. The end of the limiting rod 305 away from the limiting disc 307 is fixedly connected with the lifting plate 502. The limiting rod 305 is provided with a telescopic spring 306. One end of the telescopic spring 306 is fixedly connected with the lifting plate 502, and the other end is fixedly connected with the cylinder body of the limiting cylinder 301. It can be explained that based on the arrangement of the telescopic spring 306, the lifting plate 502 of the present embodiment can drive the limiting rod 305 to lift synchronously when lifting. The limiting rod 305 can drive the limiting disc 307 to slide in the limiting cylinder 301.
[0029] Further, when the rotating support 302 drives the limiting cylinder 301 to rotate, in order to ensure that the limiting cylinder 301 can stably drive the limiting rod 305 to rotate, in the embodiment, a plurality of groups of limiting grooves 303 are arranged in a circumferential array on the inner wall of the limiting cylinder 301, and a plurality of groups of limiting seats 304 which are in sliding engagement with the limiting grooves 303 are fixedly arranged on the outer edge surface of the limiting disc 307; it can be explained that, in the process of driving the limiting cylinder 301 to rotate, the limiting cylinder 301 synchronously drives the limiting disc 307 to rotate through the limiting grooves 303 and the limiting seats 304, and the limiting disc 307 can realize the effect of synchronously driving the lifting plate 502 and the lifting frame 501 to stably rotate through the limiting rod 305.
[0030] As a further scheme of the embodiment, the fog gun dust removal cylinder 4 is provided with a spraying end 401 at one end and a blowing end 402 at the other end, wherein the blowing end 402 is provided with a fan 410 for supplying air to the spraying end 401, an annular plate 404 is arranged in the spraying end 401, an annular cavity is arranged in the annular plate 404, and a plurality of groups of atomizing nozzles 403 are fixedly arranged in a ring array at the edge of the annular plate 404, wherein the annular cavity is connected with a water conveying assembly for conveying water into the annular cavity; it can be explained that, in the process of spraying dust removal, the water conveying assembly can convey water into the annular cavity, and the water in the annular cavity can be sprayed out through the atomizing nozzles 403 to realize the effect of spraying dust removal at the construction site.
[0031] Specifically, please refer to Figures 3-6 , the water conveying assembly comprises a water storage tank 2 fixed on the walking trolley 1, one end of the water storage tank 2 is connected with a water conveying pipe 503, a ring-shaped water tank 6 is fixedly arranged on the driving box body 3, an annular water groove 606 is arranged in the ring-shaped water tank 6, the other end of the water conveying pipe 503 is in communication with the annular water groove 606, wherein an annular cover plate 601 is rotatably arranged on the annular water groove 606, a first drain pipe 602 is fixedly arranged on the annular cover plate 601, the first drain pipe 602 is in communication with the annular water groove 606 through a water hole arranged on the annular cover plate 601, a second drain pipe 603 is slidably inserted on the first drain pipe 602, and the other end of the second drain pipe 603 is in communication with the ring-shaped water tank 6 through the expansion pipe 405 after penetrating through the through slot 411 arranged on the cylinder body of the fog gun dust removal cylinder 4; it can be explained that, in the process of conveying water, the water in the water storage tank 2 is first conveyed into the annular water groove 606 through the water conveying pipe 503 by a press machine, then conveyed into the expansion pipe 405 through the water hole arranged on the annular cover plate 601, the first drain pipe 602 and the second drain pipe 603, and finally conveyed into the ring-shaped water tank 6 and atomized and sprayed out through the atomizing nozzles 403; It can be explained that the first adjusting part of the embodiment can drive the second drain pipe 603 and the first drain pipe 602 to rotate synchronously under the limiting action of the slot wall of the through slot 411 in the process of driving the fog gun dust removal cylinder 4 to move in the horizontal direction in the circumferential direction, and the first drain pipe 602 can drive the annular cover plate 601 to rotate synchronously on the annular water tank 606. Based on this, the fog gun dust removal cylinder 4 of the embodiment will not affect the normal water conveying process of the water conveying assembly even in the process of rotating, and the normal dust removal effect of the fog gun dust removal cylinder 4 can be effectively ensured.
[0032] It should be noted that the through slot 411 of the embodiment is opened at a certain length along the axial position of the fog gun dust removal cylinder 4, so that the second drain pipe 603 will not interfere with the cylinder body of the fog gun dust removal cylinder 4 in the process of swinging in the vertical direction.
[0033] A dust falling method of a dust falling device for building environmental protection engineering construction, comprising the following steps: Please refer to Figures 1-4 S1, moving the walking trolley 1 to the dust removal position when dust falling at the construction site; S2, in the process of spraying dust falling, the first adjusting part drives the rotating support 302 to rotate on the drive box 3, and the rotating support 302 can drive the fog gun dust removal cylinder 4 to rotate in the horizontal direction in the circumferential direction through the support frame 407 to adjust the horizontal angle of the fog gun dust removal cylinder 4; S3, the second adjusting part drives the support shaft 406 to rotate on the support frame 407 to adjust the angle of the fog gun dust removal cylinder 4 in the vertical direction to expand the dust removal range of the fog gun dust removal cylinder 4.
[0034] The above disclosure is only a few specific embodiments of the present application, but the embodiments of the present application are not limited to this, any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.
Claims
1. A dust falling device for building environmental engineering construction, comprising a walking trolley (1), a fog gun dust removal cylinder (4) is arranged on the walking trolley (1); a drive box (3) is fixedly arranged on one side of the walking trolley (1), and an adjusting module is arranged on the drive box (3) to adjust the multi-direction rotation of the fog gun dust removal cylinder (4); the both ends of the cylinder body of the fog gun dust removal cylinder (4) are fixedly arranged with support shafts (406), the support shafts (406) are rotatably connected with support frames (407) respectively, and the support frames (407) are fixedly connected with a rotating support (302) rotatably arranged on the drive box (3); wherein the adjusting module comprises a first adjusting part and a second adjusting part, the first adjusting part is used for adjusting the rotation of the rotating support (302) on the drive box (3), and the second adjusting part is used for adjusting the rotation of the support shaft (406) on the support frame (407); the first adjusting part comprises a servo motor (504) fixed in the drive box (3), and the driving end of the servo motor (504) is fixedly connected with the rotating support (302); the second adjusting part comprises a gear (408) fixed at the end of the support shaft (406), the gear (408) is meshed with a rack (409), and the rack (409) is connected with a lifting assembly for driving the lifting of the rack (409); the racks (409) on the two sides are fixedly connected with lifting frames (501) through lifting shafts (5), a lifting plate (502) is fixedly arranged on one side of the lifting frame (501), and the lifting plate (502) is connected with the rotating support (302) through an elastic assembly; wherein an annular seat (7) is fixedly arranged on the drive box (3), a plurality of groups of arc-shaped grooves (701) are arranged in the circumferential direction on the annular seat (7), a lifting rod (605) is fixedly arranged at the bottom of the lifting frame (501), and a guide wheel (604) rotatably arranged at the end of the lifting rod (605) away from the lifting plate (502) is in rolling abutment with the arc-shaped grooves (701); the elastic mechanism comprises a limiting cylinder (301) fixed on the rotating support (302), a limiting disc (307) is slidably arranged in the limiting cylinder (301), the limiting disc (307) is fixedly connected with a limiting rod (305) slidably arranged in the limiting cylinder (301), and the end of the limiting rod (305) away from the limiting disc (307) is fixedly connected with the lifting plate (502); wherein a telescopic spring (306) is arranged on the limiting rod (305), one end of the telescopic spring (306) is fixedly connected with the lifting plate (502), and the other end is fixedly connected with the cylinder body of the limiting cylinder (301); a plurality of groups of limiting grooves (303) are arranged in the circumferential direction on the inner wall of the limiting cylinder (301), and a plurality of groups of limiting seats (304) are fixedly arranged on the outer edge surface of the limiting disc (307) and are in sliding engagement with the limiting grooves (303); one end of the fog gun dust removal cylinder (4) is arranged as a spraying end (401), and the other end is arranged as a blowing end (402). characterized in that 2. The dust reducing device for building environmental engineering construction according to claim 1, characterized in that, 3. The dust reducing device for building environmental engineering construction according to claim 1, characterized in that, 4. The dust reducing device for building environmental engineering construction according to claim 3, characterized in that, 5. The dust lowering device for building environmental engineering construction according to claim 4, characterized in that, 6. The dust lowering device for building environmental engineering construction according to claim 5, characterized in that, 7. The dust lowering device for building environmental engineering construction according to claim 1, characterized in that, 8. The dust lowering device for building environmental engineering construction according to claim 7, characterized in that, The blowing end (402) is provided with a fan (410) for sending air to the spraying end (401), the spraying end (401) is provided with an annular plate (404), the annular plate (404) is provided with an annular cavity, and a plurality of groups of atomizing nozzles (403) are fixedly arranged in an annular array at the edge of the annular plate (404). The annular cavity is connected with a water conveying assembly, and the water conveying assembly is used for conveying water into the annular cavity.
9. The dust lowering device for building environmental engineering construction according to claim 8, characterized in that, The water conveying assembly comprises a water storage tank (2) fixed on the walking trolley (1), one end of the water storage tank (2) is connected with a water conveying pipe (503), an annular water tank (6) is fixedly arranged on the driving box body (3), an annular water groove (606) is formed in the annular water tank (6), and the other end of the water conveying pipe (503) is in communication with the annular water groove (606).
10. The dust lowering device for building environmental engineering construction according to claim 9, characterized in that, The annular water groove (606) is rotatably arranged with an annular cover plate (601), the annular cover plate (601) is fixedly arranged with a first drain pipe (602), the first drain pipe (602) is in communication with the annular water groove (606) through a water hole formed in the annular cover plate (601), and the first drain pipe (602) is slidably connected with a second drain pipe (603), the other end of the second drain pipe (603) passes through a through groove (411) formed in the cylinder body of the fog gun dust removal cylinder (4) and is in communication with the annular water tank (6) through an extension pipe (405).