Dust falling equipment for building construction and using method thereof

Abstract

The invention relates to the field of building construction equipment, in particular to dust falling equipment for building construction and a using method thereof.The dust falling equipment comprises a machine base, a mounting frame is arranged at the top of the machine base, an air duct is hinged to the upper end of the mounting frame, and a draught fan is fixedly installed in the air duct. According to the dust falling equipment for building construction, through cooperation of the adjusting mechanism, the nozzles and the transmission mechanism on the supporting structure, the spraying paths of the nozzles can be changed, the radial spraying diameter between the multiple nozzles is increased, and therefore the spraying range and the coverage area are enlarged; through cooperation of the adjusting mechanism and the contraction assembly, the radial diameter at the air duct end can be increased along with deflection of the nozzle, so that the spraying range of the nozzle can be further improved, the radial distance at the air duct end is reduced along with deflection and gathering of the nozzle, dispersion of water mist can be reduced when the dust falling device carries out centralized dust falling on a certain position, and the dust falling efficiency is improved. Therefore, the adaptability of the equipment to different working conditions is improved.

Description

Technical Field

[0001] The present invention relates to the field of construction equipment, and particularly to a dust reduction device for construction and its usage method. Background Technique

[0002] During the construction process of a construction site, a large amount of dust will be generated, which is also harmful to the human body in such an environment for a long time. Usually, during the construction process of a construction site, dust reduction treatment needs to be carried out through a dust reduction device.

[0003] Construction dust reduction devices usually adopt a movable base and an adjustment mechanism installed on the base. The angle of the spray gun is adjusted through the adjustment mechanism, and the construction area is spray-dusted by spraying water mist through the spray gun to effectively reduce the dust at the construction site. However, currently, the mainstream fog guns on the market generally adopt a fixed-angle nozzle design, and its spraying angle is fixed when the device is installed. Although this design has a simple structure and low cost, it has obvious limitations in practical applications;

[0004] The requirements for the atomization coverage range vary significantly in different operation scenarios. For example, high-altitude dust requires a large-angle and long-range fog curtain, while the ground dust accumulation area requires a low angle and wide coverage; fixed nozzles cannot dynamically adjust the angle, making it inconvenient to flexibly adjust the atomization range and coverage area according to different operation scenarios, resulting in a single device being difficult to meet diverse needs. Often, multiple fog guns of different specifications need to be configured or the device position needs to be adjusted frequently, increasing the usage cost and operation complexity. Summary of the Invention

[0005] The purpose of the present invention is to provide a dust reduction device for construction and its usage method to solve the problems raised in the above background technique. To achieve the above purpose, the present invention provides the following technical solution: A dust reduction device for construction, including a machine base, an installation frame is provided at the top of the machine base, and a wind tube is hingedly installed at the upper end of the installation frame. A fan is fixedly installed inside the wind tube;

[0006] A control mechanism for adjusting the angle of the wind tube is provided between the machine base and the installation frame. A support structure is provided on the inner wall at one end of the wind tube, and an adjustment mechanism is provided on the surface of the support structure. A number of nozzles are equidistantly installed on the adjustment mechanism, and one end of the nozzle is fixedly connected to a silica gel hose. A connecting hose is fixedly connected between adjacent two silica gel hoses. A transmission mechanism for adjusting the angle of the nozzle is provided between the adjustment mechanism and the inner wall of one end of the wind tube.

[0007] Preferably, an annular outer tube is fixedly installed on the outer wall at one end of the wind tube, and a water inlet pipe is fixedly connected to the lower end of the annular outer tube. One end of the connecting hose is fixedly connected to the inside of the annular outer tube.

[0008] Preferably, the regulating mechanism includes a first electric cylinder. The bottom of the first electric cylinder is hingedly installed on the surface of the lower end of the mounting frame. The output end of the first electric cylinder is hingedly installed at the bottom of one end of the air duct. The top of the machine base is symmetrically and fixedly installed with second electric cylinders, and the output ends of the second electric cylinders are fixedly installed on one side of the mounting frame. The lower end of the mounting frame is symmetrically and movably penetrated with guide rods, and the bottoms of the guide rods are fixedly connected to the top of the machine base.

[0009] Preferably, the supporting structure includes fixing blocks. There are two fixing blocks, and the two fixing blocks are symmetrically and fixedly installed on the inner wall of one end of the air duct. A large guide ring and a small guide ring are fixedly installed between the two fixing blocks. There are four adjusting mechanisms, and two adjusting mechanisms are set as a group. The two groups of adjusting mechanisms are respectively symmetrically arranged on the surfaces of the corresponding large guide ring and the corresponding small guide ring.

[0010] Preferably, the adjusting mechanism includes rotating sleeves. There are four rotating sleeves, and the four rotating sleeves are equidistantly rotatably installed on the surfaces of the corresponding large guide ring and the corresponding small guide ring on one side. One end of the surface of the rotating sleeve is hingedly installed with a first L-shaped connecting rod, and one end of the first L-shaped connecting rod is hingedly installed with a connecting rod. One end of the connecting rod is hingedly installed with a second L-shaped connecting rod, and one end of the second L-shaped connecting rod is hingedly installed at the other end of the adjacent rotating sleeve. The surface of one end of the nozzle is fixedly installed on the surface of the adjacent rotating sleeve. An installation block is movably penetrated between the outer walls of two adjacent silicone hoses, and one end of the installation block is fixedly installed on the inner wall of one end of the air duct. The transmission mechanism is arranged between the corresponding installation block and two adjacent rotating sleeves. A variable diameter mechanism is arranged between the installation block and two adjacent silicone hoses. A contraction assembly is arranged between the connecting rod and the end of one end of the air duct.

[0011] Preferably, the transmission mechanism includes a third electric cylinder. The third electric cylinder is fixedly installed on the surface of one end of the corresponding installation block. The output end of the third electric cylinder is fixedly connected with a rack, and one side of the rack is slidably installed on the side wall of the installation block. The surface of the rack is engaged with a first toothed ring, and the inner ring of the first toothed ring is fixedly installed on the outer wall of the corresponding rotating sleeve. The surface of the first toothed ring is engaged with a gear shaft, and one end of the gear shaft is rotatably installed with a bracket. One side of the bracket is fixedly installed on the surface of the adjacent installation block. The surface of the gear shaft is engaged with a second toothed ring, and the inner ring of the second toothed ring is fixedly installed on the outer wall of the corresponding rotating sleeve.

[0012] Preferably, the diameter-changing mechanism includes through holes. There are two through holes, which are respectively opened inside the other end of the mounting block. The silica gel hose is movably inserted through the corresponding through holes. The inner wall of the through hole is provided with an arc-shaped groove. The surface of the silica gel hose is fixedly connected with a fixing ring, and the outer wall of the fixing ring is fixedly connected with a slider. The slider is slidably installed inside the corresponding arc-shaped groove. The surface of one end of the silica gel hose is fixedly connected with a positioning ring. A first spring is sleeved on the surface of one end of the silica gel hose, and both ends of the first spring are respectively fixedly installed on the surface of the mounting block and the surface of one side of the positioning ring. A second spring is sleeved in the middle of the silica gel hose, and both ends of the second spring are respectively fixedly installed on the surface of one side of the fixing ring and the inner wall of the through hole. The inner wall of the second spring is in contact with the surface of the silica gel hose.

[0013] Preferably, the contraction assembly includes movable plates. There are several movable plates, which are hingedly installed on the outer wall of one end of the air duct. The inner wall of the movable plate is hingedly installed with a hinge rod, and one end of the hinge rod is fixedly installed on the surface of the adjacent connecting rod. A flexible rubber membrane is fixedly connected between the side walls of two adjacent movable plates. An annular rubber membrane is bonded to the outer wall of one end of the air duct, and one side of the annular rubber membrane is bonded between the movable plate and the flexible rubber membrane.

[0014] A using method of a dust reduction device for building construction includes the following steps:

[0015] S1. During the dust reduction of building construction, through the setting of the regulation mechanism, the height and angle of the air duct are adjusted to increase the spraying range.

[0016] S2. Through the cooperation of the adjustment mechanism, the nozzle and the transmission mechanism on the support structure, the spraying path of the nozzle can be changed, so that the radial diameter of the spraying between multiple nozzles is increased. And when the spraying path of the nozzle is changed, through the setting of the contraction assembly, the radial diameter at the end of the air duct increases with the deflection of the nozzle, so as to further improve the spraying range of the nozzle.

[0017] S3. In addition, after the spraying path of the nozzle is changed, through the setting of the diameter-changing mechanism, the radial distance of the silica gel hose can be reduced when it is pulled, so as to accelerate the water flow rate inside the silica gel hose and ensure the spraying range of the nozzle.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] In the present invention, through the cooperation of the adjustment mechanism, the nozzle and the transmission mechanism on the support structure, the spraying path of the nozzle can be changed, so that the radial diameter of the spraying between multiple nozzles is increased, thereby improving the spraying range and the coverage area.

[0020] In the present invention, through the cooperation of the adjustment mechanism and the contraction component, the radial diameter at the air duct end can be increased as the nozzle deflects, thereby further improving the spraying range of the nozzle. Moreover, when the nozzle deflects and converges, the radial distance at the air duct end decreases accordingly. During the centralized dust suppression of a certain area by the dust suppression device, the dispersion of the water mist can be reduced, thus enhancing the adaptability of the equipment to different working conditions.

[0021] In the present invention, through the cooperation of components such as the nozzle and the variable diameter mechanism, after the spraying path of the nozzle changes, the radial distance of the silicone hose can be reduced during being pulled, thereby accelerating the water flow velocity inside the silicone hose, ensuring the spraying range of the nozzle, and improving the spraying stability of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the right view of the overall structure of the present invention;

[0023] Figure 2 is the rear view of the overall structure of the present invention;

[0024] Figure 3 is the left view of the overall structure of the present invention;

[0025] Figure 4 is of the present invention Figure 3 schematic enlarged view of the structure at A;

[0026] Figure 5 is the schematic diagram of local structures such as the support structure, adjustment mechanism and transmission mechanism of the present invention;

[0027] Figure 6 is of the present invention Figure 5 schematic enlarged view of the structure at B;

[0028] Figure 7 is the schematic diagram of local structures such as the support structure, nozzle and transmission mechanism of the present invention;

[0029] Figure 8 is the right view sectional schematic diagram of local structures such as the air duct, annular outer tube and adjustment mechanism of the present invention;

[0030] Figure 9 is of the present invention Figure 8 schematic enlarged view of the structure at C;

[0031] Figure 10 is the right view schematic diagram of the mounting block, silicone hose and variable diameter mechanism of the present invention;

[0032] Figure 11 is the right view sectional schematic diagram of the mounting block, silicone hose and variable diameter mechanism of the present invention;

[0033] Figure 12Schematic diagram of the installation block, silicone hose and diameter-changing mechanism of the present invention in a top-down sectional view;

[0034] Figure 13 Schematic diagram of the silicone hose and the second spring of the present invention in a sectional view.

[0035] In the figure: 1, machine base; 2, mounting frame; 3, air duct; 301, fan; 4, regulating mechanism; 401, first electric cylinder; 402, second electric cylinder; 403, guide rod; 5, support structure; 501, fixing block; 502, large guide ring; 503, small guide ring; 6, nozzle; 601, silicone hose; 7, adjusting mechanism; 701, rotating sleeve; 702, first L-shaped connecting rod; 703, connecting rod; 704, second L-shaped connecting rod; 705, mounting block; 8, transmission mechanism; 801, third electric cylinder; 802, rack; 803, first toothed ring; 804, bracket; 805, gear shaft; 806, second toothed ring; 9, diameter-changing mechanism; 901, through hole; 902, arc-shaped groove; 903, fixing ring; 904, slider; 905, positioning ring; 906, first spring; 907, second spring; 10, connecting hose; 11, annular outer tube; 1101, water inlet pipe; 12, contraction assembly; 1201, movable plate; 1202, hinged rod; 1203, flexible rubber membrane; 1204, annular rubber membrane. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1 to 13 , the present invention provides a technical solution: a dust reduction device for building construction, including a machine base 1, a mounting frame 2 is arranged on the top of the machine base 1, and an air duct 3 is hingedly installed at the upper end of the mounting frame 2, and a fan 301 is fixedly installed inside the air duct 3;

[0038] A regulating mechanism 4 for adjusting the angle of the air duct 3 is arranged between the machine base 1 and the mounting frame 2. A support structure 5 is arranged on the inner wall of one end of the air duct 3, and an adjusting mechanism 7 is arranged on the surface of the support structure 5. A plurality of nozzles 6 are equidistantly installed on the adjusting mechanism 7, and one end of the nozzle 6 is fixedly connected to a silicone hose 601. A connecting hose 10 is fixedly connected between adjacent two silicone hoses 601. A transmission mechanism 8 for adjusting the angle of the nozzle 6 is arranged between the adjusting mechanism 7 and the inner wall of one end of the air duct 3.

[0039] In this embodiment, as Figures 1 to 13As shown, a ring-shaped outer pipe 11 is fixedly installed on the outer wall of one end of the air duct 3, and a water inlet pipe 1101 is fixedly connected to the lower end of the ring-shaped outer pipe 11. One end of the connecting hose 10 is fixedly connected to the inside of the ring-shaped outer pipe 11.

[0040] By connecting the water inlet pipe 1101 to an external water source, when using the construction dust suppression equipment, water enters the ring-shaped outer pipe 11 through the water inlet pipe 1101, and then flows from the ring-shaped outer pipe 11 into two silicone hoses 601 fixed at the end of the connecting hose 10, and misty water is sprayed out from the nozzles 6 for dust suppression operations.

[0041] In this embodiment, as Figures 1 to 13 shown, the adjustment mechanism 4 includes a first electric cylinder 401. The bottom of the first electric cylinder 401 is hingedly installed on the surface of the lower end of the mounting frame 2, and the output end of the first electric cylinder 401 is hingedly installed at the bottom of one end of the air duct 3. Symmetrically fixed on the top of the machine base 1 are second electric cylinders 402, and the output ends of the second electric cylinders 402 are fixedly installed on one side of the mounting frame 2. It should be noted here that the two second electric cylinders 402 can be adjusted by parameters to achieve synchronous contraction. Guide rods 403 are symmetrically and movably penetrated through the lower end of the mounting frame 2, and the bottom of the guide rods 403 is fixedly connected to the top of the machine base 1.

[0042] When it is necessary to adjust the height of the air duct 3, by starting the two second electric cylinders 402, the output ends of the second electric cylinders 402 push the air duct 3 hinged on the mounting frame 2 to rise and fall to achieve the height adjustment of the air duct 3. When it is necessary to change the angle of the air duct 3 for adjusting the spraying angle, by starting the first electric cylinder 401, the output end of the first electric cylinder 401 pushes the hinged air duct 3 to deflect, so that the air duct 3 deflects with the hinge point with the mounting frame 2 as the axis, realizing the angle adjustment of the air duct 3, thereby being able to change the spraying angle and increase the spraying range.

[0043] In this embodiment, as Figures 1 to 13 shown, the support structure 5 includes fixing blocks 501. There are two fixing blocks 501, and the two fixing blocks 501 are symmetrically and fixedly installed on the inner wall of one end of the air duct 3. A large guide ring 502 and a small guide ring 503 are fixedly installed between the two fixing blocks 501. There are four adjusting mechanisms 7. Two adjusting mechanisms 7 are set as a group, and the two groups of adjusting mechanisms 7 are respectively symmetrically arranged on the surfaces of the corresponding large guide ring 502 and the corresponding small guide ring 503.

[0044] It should be noted here that the diameter of the large guide ring 502 is larger than that of the small guide ring 503, and adjusting mechanisms 7 are symmetrically arranged on both sides of the large guide ring 502 and the small guide ring 503. At least four nozzles 6 are equidistantly installed on each adjusting mechanism 7, so that eight nozzles 6 are equidistantly distributed on both the large guide ring 502 and the small guide ring 503. By spraying water mist through multiple nozzles 6 for dust suppression, the dust suppression effect is improved.

[0045] In this embodiment, as Figures 1 to 13 shown, the adjusting mechanism 7 includes a rotating sleeve 701. There are four rotating sleeves 701, and the four rotating sleeves 701 are rotatably installed at equal intervals on the surface of the corresponding large guide ring 502 and on the surface of the corresponding small guide ring 503 on one side. It should be noted here that the rotating sleeve 701 can be rotatably installed on the corresponding large guide ring 502 and the corresponding small guide ring 503 through bearings. One end of the surface of the rotating sleeve 701 is hingedly installed with a first L-shaped connecting rod 702, and one end of the first L-shaped connecting rod 702 is hingedly installed with a connecting rod 703. One end of the connecting rod 703 is hingedly installed with a second L-shaped connecting rod 704, and one end of the second L-shaped connecting rod 704 is hingedly installed at the other end of the adjacent rotating sleeve 701. One end of the surface of the nozzle 6 is fixedly installed on the surface of the adjacent rotating sleeve 701. An installation block 705 is movably penetrated between the outer walls of two adjacent silicone hoses 601, and one end of the installation block 705 is fixedly installed on the inner wall of one end of the air duct 3. A transmission mechanism 8 is arranged between the corresponding installation block 705 and two adjacent rotating sleeves 701. A variable diameter mechanism 9 is arranged between the installation block 705 and two adjacent silicone hoses 601. A contraction assembly 12 is arranged between the connecting rod 703 and the end of one end of the air duct 3. Since the adjusting mechanisms 7 are symmetrically arranged on both sides of the large guide ring 502 and the small guide ring 503, the two adjusting mechanisms 7 on the same side can be synchronously deflected through the setting of the transmission mechanism 8, so as to drive the nozzle 6 on the rotating sleeve 701 to perform angle conversion.

[0046] In this embodiment, as Figures 1 to 13 shown, the transmission mechanism 8 includes a third electric cylinder 801. The third electric cylinder 801 is fixedly installed on the surface of one end of the corresponding installation block 705. The output end of the third electric cylinder 801 is fixedly connected with a rack 802, and one side of the rack 802 is slidably installed on the side wall of the installation block 705. A first toothed ring 803 is engaged with the surface of the rack 802, and the inner ring of the first toothed ring 803 is fixedly installed on the outer wall of the corresponding rotating sleeve 701. A gear shaft 805 is engaged with the surface of the first toothed ring 803, and one end of the gear shaft 805 is rotatably installed with a bracket 804. The bracket 804 and the gear shaft 805 are rotatably installed through bearings. One side of the bracket 804 is fixedly installed on the surface of the adjacent installation block 705. A second toothed ring 806 is engaged with the surface of the gear shaft 805, and the inner ring of the second toothed ring 806 is fixedly installed on the outer wall of the corresponding rotating sleeve 701.

[0047] It should be noted here that the inner ring of the first toothed ring 803 is fixedly installed on the rotating sleeve 701 on the surface of the large guide ring 502, while the inner ring of the second toothed ring 806 is fixedly installed on the rotating sleeve 701 on the surface of the small guide ring 503 on the same side. When the rack 802 moves and meshes with the first toothed ring 803 on the surface of the rotating sleeve 701 on the large guide ring 502, the first toothed ring 803 meshes and rotates with the corresponding gear shaft 805. At the same time, the gear shaft 805 meshes with the second toothed ring 806 on the surface of the rotating sleeve 701 on the small guide ring 503 on the same side, so that the rotating sleeve 701 on the large guide ring 502 and the rotating sleeve 701 on the small guide ring 503 on the same side rotate synchronously, so as to realize the synchronous deflection of the nozzles 6 on the large guide ring 502 and the nozzles 6 on the small guide ring 503.

[0048] During the dust reduction in building construction, when it is necessary to further increase the spraying range of the dust reduction equipment, it is necessary to adjust the spraying path of the nozzle 6 on the rotating sleeve 701. Therefore, by starting the third electric cylinder 801, the output end of the third electric cylinder 801 pushes the rack 802 to move. At this time, the rack 802 meshes with the first toothed ring 803 on the corresponding rotating sleeve 701 on the surface of the large guide ring 502, causing the first toothed ring 803 to rotate. At the same time, the first toothed ring 803 drives the gear shaft 805 meshing with it to rotate, so that the gear shaft 805 meshes with the second toothed ring 806 on the corresponding rotating sleeve 701 on the surface of the small guide ring 503, causing the first toothed ring 803 and the second toothed ring 806 to drive the corresponding rotating sleeve 701 to rotate. At the same time, the rotating sleeve 701 drives the first L-shaped connecting rod 702 hinged on the surface to deflect, and the first L-shaped connecting rod 702 drives the connecting rod 703 hinged at one end to flip at the same time. Since one end of the connecting rod 703 is hinged to the second L-shaped connecting rod 704, and the second L-shaped connecting rod 704 is hinged and installed on the adjacent rotating sleeve 701, the adjacent rotating sleeve 701 is driven to rotate at the same time. In addition, because the four rotating sleeves 701 symmetrically distributed on both sides of the large guide ring 502 and the small guide ring 503 are all hinged through the first L-shaped connecting rod 702, the connecting rod 703 and the second L-shaped connecting rod 704, when the first toothed ring 803 and the second toothed ring 806 rotate, the four rotating sleeves 701 on the large guide ring 502 on the same side and the four rotating sleeves 701 on the small guide ring 503 on the same side rotate synchronously and in the same direction, so that the nozzles 6 fixed on the rotating sleeves 701 on the same side deflect synchronously, realizing the angle adjustment of multiple nozzles 6 on the same side, thereby changing the spraying path of the nozzles 6, increasing the radial diameter of the spraying between multiple nozzles 6, thereby increasing the spraying range and the coverage area.

[0049] In this embodiment, as Figures 1 to 13As shown in the figure, the diameter-changing mechanism 9 includes through holes 901. There are two through holes 901, which are respectively opened inside the other end of the mounting block 705. The silicone hose 601 is movably inserted through the corresponding through hole 901. An arc-shaped groove 902 is formed on the inner wall of the through hole 901. A fixing ring 903 is fixedly connected to the surface of the silicone hose 601, and a slider 904 is fixedly connected to the outer wall of the fixing ring 903. The slider 904 is slidably installed inside the corresponding arc-shaped groove 902. A positioning ring 905 is fixedly connected to the surface of one end of the silicone hose 601. A first spring 906 is sleeved on the surface of one end of the silicone hose 601, and both ends of the first spring 906 are respectively fixedly installed on the surface of the mounting block 705 and the surface of one side of the positioning ring 905. A second spring 907 is sleeved on the middle of the silicone hose 601, and both ends of the second spring 907 are respectively fixedly installed on the surface of one side of the fixing ring 903 and the inner wall of the through hole 901. The inner wall of the second spring 907 abuts against the surface of the silicone hose 601.

[0050] When the rotating sleeve 701 drives the nozzle 6 to deflect, the nozzle 6 will pull the connected silicone hose 601 to move. At this time, the silicone hose 601 moves inside the corresponding mounting block 705. At this time, the fixing ring 903 fixedly connected to the silicone hose 601 slides in the arc-shaped groove 902 through the slider 904 fixedly installed on the surface. And due to the arc-shaped setting of the arc-shaped groove 902, when the slider 904 on the fixing ring 903 moves, it drives the silicone hose 601 to twist. During the twisting of the silicone hose 601, the radial distance of the silicone hose 601 is relatively reduced. At the same time, the movement of the arc-shaped groove 902 drives the second spring 907 between the surface of the fixing ring 903 and the inner wall of the through hole 901 to stretch and twist. During the stretching and twisting of the second spring 907, the radial distance will decrease, and the inner wall of the second spring 907 abuts against the silicone hose 601. While the radial distance of the second spring 907 decreases, it squeezes the silicone hose 601, thereby further reducing the inner diameter of the silicone hose 601. Since the external water source is usually the water delivered by a water pump, during the stable delivery of water pressure, when the silicone hose 601 is pulled by the nozzle 6 and the path of the silicone hose 601 changes, it will affect the spraying distance of the nozzle 6. However, by the reduction of the radial distance generated when the silicone hose 601 is pulled, the water flow velocity inside the silicone hose 601 will be accelerated, thereby offsetting the problem that the path change of the silicone hose 601 affects the spraying distance of the nozzle 6, further ensuring the spraying range of the nozzle 6, improving the spraying stability of the nozzle 6, and thus enhancing the adaptability of the equipment to different working conditions. And when multiple nozzles 6 approach each other to narrow the spraying range, the first spring 906 is released from the extrusion state and elastically resets, which can drive the silicone hose 601 to return to the initial position.

[0051] In this embodiment, as Figures 1 to 13As shown, the contraction assembly 12 includes a movable plate 1201. There are several movable plates 1201, and the several movable plates 1201 are hingedly installed on the outer wall of one end of the air duct 3. It should be added here that a U-shaped block is fixedly installed at the position of the movable plate 1201 close to one end of the air duct 3, and a rotating pin is rotatably installed in the U-shaped block. A positioning block is fixedly installed in the middle of the rotating pin, and the positioning block is fixed on the outer wall of one end of the air duct to realize the hinged installation of the movable plate 1201. An articulated rod 1202 is hingedly installed on the inner wall of the movable plate 1201, and one end of the articulated rod 1202 is fixedly installed on the surface of the adjacent connecting rod 703. A flexible rubber membrane 1203 is fixedly connected between the side walls of two adjacent movable plates 1201. An annular rubber membrane 1204 is bonded to the outer wall of one end of the air duct 3, and one side of the annular rubber membrane 1204 is bonded between the movable plate 1201 and the flexible rubber membrane 1203.

[0052] The annular rubber membrane 1204 can be fixedly bonded between the outer wall of one end of the air duct 3 and the movable plate 1201 and the flexible rubber membrane 1203 by means of glue. Since the flexible rubber membrane 1203 and the annular rubber membrane 1204 have a certain elasticity and can be stretched, their setting can improve the sealing performance between the air duct 3 and the movable plate 1201, and can further guide the airflow blown by the fan 301.

[0053] When the connecting rod 703 deflects to make the large guide ring 502 and the small guide ring 503 deflect in the opposite direction and unfold in a diffused manner to change the spraying path of the nozzles 6, the connecting rod 703 simultaneously drives the articulated rod 1202 to deflect, so that the movable plate 1201 hinged at one end of the articulated rod 1202 folds outwards with the hinge of the air duct 3 as the axis, so that the radial diameter at the end of the air duct 3 increases with the deflection of the nozzles 6, thereby further improving the spraying range of the nozzles 6. When the several nozzles 6 deflect and gather, the connecting rod 703 drives the articulated rod 1202 to deflect in the opposite direction, so that the corresponding movable plate 1201 folds inwards, thereby reducing the radial distance at one end of the air duct 3. In the process of the dust reduction device performing centralized dust reduction at a certain place, the dispersion of the water mist can be reduced and the practicability can be improved.

[0054] In this embodiment, as Figures 1 to 13 shown, a method for using a dust reduction device for building construction includes the following steps:

[0055] S1. During the dust reduction of building construction, through the setting of the adjustment mechanism 4, the height and angle of the air duct 3 are adjusted to increase the spraying range.

[0056] S2. Through the cooperation of the adjusting mechanism 7, nozzle 6 and transmission mechanism 8 on the support structure 5, the spraying path of the nozzle 6 can be changed, increasing the radial diameter of the spraying between multiple nozzles 6. At the same time, when the spraying path of the nozzle 6 is changed, through the setting of the contraction assembly 12, the radial diameter at the end of the air duct 3 increases with the deflection of the nozzle 6, thereby further improving the spraying range of the nozzle 6.

[0057] S3. In addition, after the spraying path of the nozzle 6 is changed, through the setting of the diameter-changing mechanism 9, the radial distance of the silicone hose 601 can be reduced during being pulled, thereby accelerating the water flow velocity inside the silicone hose 601 and ensuring the spraying range of the nozzle 6.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust reduction device for building construction, comprising a machine base (1). An installation frame (2) is provided at the top of the machine base (1), and an air duct (3) is hingedly installed at the upper end of the installation frame (2). A blower (301) is fixedly installed inside the air duct (3). It is characterized in that: A control mechanism (4) for adjusting the angle of the air duct (3) is provided between the machine base (1) and the installation frame (2). A support structure (5) is provided on the inner wall of one end of the air duct (3), and an adjustment mechanism (7) is provided on the surface of the support structure (5). A number of nozzles (6) are equidistantly installed on the adjustment mechanism (7), and one end of the nozzle (6) is fixedly connected to a silica gel hose (601). A connecting hose (10) is fixedly connected between adjacent two silica gel hoses (601). A transmission mechanism (8) for adjusting the angle of the nozzle (6) is provided between the adjustment mechanism (7) and the inner wall of one end of the air duct (3).

2. The dust reduction device for building construction according to claim 1, wherein: An annular outer pipe (11) is fixedly installed on the outer wall of one end of the air duct (3), and a water inlet pipe (1101) is fixedly connected to the lower end of the annular outer pipe (11). One end of the connecting hose (10) is fixedly connected to the inside of the annular outer pipe (11).

3. A dust reduction device for building construction according to claim 1, characterized in that: The control mechanism (4) includes a first electric cylinder (401). The bottom of the first electric cylinder (401) is hingedly installed on the surface of the lower end of the installation frame (2), and the output end of the first electric cylinder (401) is hingedly installed on the bottom of one end of the air duct (3). Second electric cylinders (402) are symmetrically and fixedly installed on the top of the machine base (1), and the output ends of the second electric cylinders (402) are fixedly installed on one side of the installation frame (2). Guide rods (403) are symmetrically and movably penetrated through the lower end of the installation frame (2), and the bottom of the guide rods (403) is fixedly connected to the top of the machine base (1).

4. A dust reduction device for building construction according to claim 1, characterized in that: The support structure (5) includes fixing blocks (501). There are two fixing blocks (501), and the two fixing blocks (501) are symmetrically and fixedly installed on the inner wall of one end of the air duct (3). A large guide ring (502) and a small guide ring (503) are fixedly installed between the two fixing blocks (501). There are four adjustment mechanisms (7), and two adjustment mechanisms (7) are set as a group. The two groups of adjustment mechanisms (7) are respectively symmetrically arranged on the surfaces of the corresponding large guide ring (502) and the corresponding small guide ring (503).

5. The dust reduction device for building construction according to claim 4, characterized in that: The adjusting mechanism (7) includes a rotating sleeve (701). There are four rotating sleeves (701), and the four rotating sleeves (701) are rotatably installed at equal intervals on the surface of the corresponding large guide ring (502) and the corresponding small guide ring (503) on one side. One end of the surface of the rotating sleeve (701) is hinged with a first L-shaped connecting rod (702), and one end of the first L-shaped connecting rod (702) is hinged with a connecting rod (703). One end of the connecting rod (703) is hinged with a second L-shaped connecting rod (704), and one end of the second L-shaped connecting rod (704) is hinged with the other end of the adjacent rotating sleeve (701). One end of the surface of the nozzle (6) is fixedly installed on the surface of the adjacent rotating sleeve (701). An installation block (705) is movably penetrated between the outer walls of two adjacent silicone hoses (601), and one end of the installation block (705) is fixedly installed on the inner wall of one end of the air duct (3). The transmission mechanism (8) is arranged between the corresponding installation block (705) and two adjacent rotating sleeves (701). A variable diameter mechanism (9) is arranged between the installation block (705) and two adjacent silicone hoses (601). A contraction assembly (12) is arranged between the connecting rod (703) and one end of the air duct (3).

6. The dust reduction device for building construction according to claim 5, characterized in that: The transmission mechanism (8) includes a third electric cylinder (801). The third electric cylinder (801) is fixedly installed on the surface of one end of the corresponding installation block (705). The output end of the third electric cylinder (801) is fixedly connected with a rack (802), and one side of the rack (802) is slidably installed on the side wall of the installation block (705). The surface of the rack (802) is engaged with a first toothed ring (803), and the inner ring of the first toothed ring (803) is fixedly installed on the outer wall of the corresponding rotating sleeve (701). The surface of the first toothed ring (803) is engaged with a gear shaft (805), and one end of the gear shaft (805) is rotatably installed with a bracket (804). One side of the bracket (804) is fixedly installed on the surface of the adjacent installation block (705). The surface of the gear shaft (805) is engaged with a second toothed ring (806), and the inner ring of the second toothed ring (806) is fixedly installed on the outer wall of the corresponding rotating sleeve (701).

7. A dust reduction device for building construction according to claim 5, characterized in that: The variable diameter mechanism (9) includes through holes (901). There are two through holes (901), and the two through holes (901) are respectively opened inside the other end of the mounting block (705). The silica gel hose (601) is movably arranged through the corresponding through hole (901). An arc-shaped groove (902) is formed on the inner wall of the through hole (901). A fixing ring (903) is fixedly connected to the surface of the silica gel hose (601), and a slider (904) is fixedly connected to the outer wall of the fixing ring (903). The slider (904) is slidably installed inside the corresponding arc-shaped groove (902). A positioning ring (905) is fixedly connected to the surface of one end of the silica gel hose (601). A first spring (906) is sleeved on the surface of one end of the silica gel hose (601), and both ends of the first spring (906) are respectively fixedly installed on the surface of the mounting block (705) and the surface of one side of the positioning ring (905). A second spring (907) is sleeved on the middle part of the silica gel hose (601), and both ends of the second spring (907) are respectively fixedly installed on the surface of one side of the fixing ring (903) and the inner wall of the through hole (901). The inner wall of the second spring (907) is abutted against the surface of the silica gel hose (601).

8. The dust reduction device for building construction according to claim 5, characterized in that: The contraction assembly (12) includes movable plates (1201). There are several movable plates (1201), and the several movable plates (1201) are hingedly installed on the outer wall of one end of the air duct (3). An articulated rod (1202) is hingedly installed on the inner wall of the movable plate (1201), and one end of the articulated rod (1202) is fixedly installed on the surface of the adjacent connecting rod (703). A flexible rubber membrane (1203) is fixedly connected between the side walls of two adjacent movable plates (1201). An annular rubber membrane (1204) is adhered to the outer wall of one end of the air duct (3), and one side of the annular rubber membrane (1204) is adhered between the movable plate (1201) and the flexible rubber membrane (1203).

9. A method for using a dust reduction device for building construction, characterized in that, Using a dust reduction device for building construction according to any one of claims 1-8, the following steps are included: S1. During the dust reduction in building construction, through the setting of the regulation mechanism (4), the height and angle of the air duct (3) are adjusted to increase the spraying range; S2. Through the cooperation of the adjustment mechanism (7), the nozzle (6) and the transmission mechanism (8) on the support structure (5), the spraying path of the nozzle (6) can be changed, so that the radial diameter between multiple nozzles (6) during spraying increases. And while the spraying path of the nozzle (6) is changed, through the setting of the contraction assembly (12), the radial diameter at the end of the air duct (3) increases with the deflection of the nozzle (6), so as to further improve the spraying range of the nozzle (6); S3. In addition, after the spraying path of the nozzle (6) is changed, through the setting of the variable diameter mechanism (9), the radial distance of the silica gel hose (601) can be reduced during being pulled, so as to accelerate the water flow rate inside the silica gel hose (601) and ensure the spraying range of the nozzle (6).

Images