Building blasting demolition dust falling device and method

Abstract

The invention discloses a building blasting demolition dust falling device and method, and relates to the technical field of dust falling in building blasting demolition, the device comprises a rack, a water storage tank, a spraying mechanism and a spraying mechanism, the spraying mechanism is composed of a spraying assembly and a wind power guiding assembly, and the wind power guiding assembly is connected with the spraying assembly through an air outlet pipe; the spraying mechanism comprises a spraying assembly capable of spraying a water curtain, and in addition, the device further comprises a swinging assembly, a lifting assembly and an annular water bag used for carrying out dust falling on a blasting point. According to the method, dust raising is effectively controlled in different stages before and after building blasting through pre-spraying of the water curtain and the water mist, the dust falling efficiency is remarkably improved, and environmental pollution is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of dust reduction equipment for building blasting and demolition, and in particular to a dust reduction device and method for building blasting and demolition. Background Art

[0002] Low-rise and multi-story buildings are mostly brick-concrete structures. The traditional demolition method is to demolish them layer by layer from top to bottom. This demolition method is not only inefficient, but also generates a lot of dust, which seriously pollutes the environment. With the maturity of blasting technology in building demolition, the blasting demolition of low-rise and multi-story buildings has gradually increased. Although this blasting demolition method has high demolition efficiency, how to effectively control the large amount of dust generated during the blasting process has become an urgent problem to be solved. Traditional dust reduction measures mainly rely on artificial water spraying or simple equipment. Although these methods can reduce dust diffusion to a certain extent, they have many limitations in practical applications and are difficult to meet the high standards of environmental protection and safety in modern urban construction.

[0003] At present, in order to deal with the dust problem during the blasting and demolition of buildings, the commonly used solutions include using high-pressure water guns and other equipment to spray water to reduce dust. The high-pressure water gun sprays water to reduce dust on the blasted buildings through a strong water flow. The dust contacted by the water flow can be reduced under the action of the water flow, but this method requires the use of a large amount of water resources. At the same time, the dust that has not come into contact with the water flow still floats above the blasted buildings. Therefore, the dust reduction devices of the relevant technology still have significant defects in the process of blasting and demolition of buildings. A more efficient and stable dust reduction device is urgently needed to solve these problems. Summary of the invention

[0004] In order to help solve the technical problem of improving the dust reduction effect of building blasting and demolition, the present application provides a dust reduction device and method for building blasting and demolition.

[0005] In the first aspect, the present application provides a dust suppression device for building blasting and demolition, which adopts the following technical solution: A dust suppression device for building blasting and demolition comprises a frame, a water tank mounted on the frame, a spray mechanism connected to the water tank and used for spraying a water curtain to a blasting and demolition area, and a spray mechanism for spraying water mist, wherein the spray mechanism comprises a spray assembly and a wind guide assembly, wherein the wind guide assembly is mounted on the frame, the wind guide assembly is provided with an air outlet pipe, the air outlet end of the air outlet pipe is connected to the spray assembly, and the spray mechanism comprises a spray assembly for spraying a water curtain, wherein the spray assembly is mounted on the spray assembly.

[0006] By adopting the above technical solution, the frame is used to support the entire device to facilitate transportation according to the area where the building is located, the water tank is used to provide the blasting area with the water source required for spraying the water curtain and spraying, and the spray component sprays water mist to the blasting area under the action of the wind force at the outlet end of the air outlet pipe, thereby expanding the contact area with the dust and forming small water droplets. The small water droplets meet the water curtain sprayed by the spray component to form large water droplets. The large water droplets fall quickly under the action of gravity, thereby effectively suppressing the dust generated when the blasting building collapses.

[0007] Optionally, the spray assembly includes a mounting frame and a spray barrel, the spray barrel is mounted on the mounting frame via a swinging assembly, an annular water pipe is wound around the outer wall of one end of the spray barrel, a plurality of nozzles are arranged on the annular water pipe, a through hole for penetrating the nozzle is provided on the barrel wall of the spray barrel opposite to the nozzle, the spray barrel is penetrated by the air outlet end of the air outlet pipe and is fixedly connected to the inner wall of the spray barrel, and the air outlet of the air outlet end is located at one end of the spray barrel close to the nozzle.

[0008] By adopting the above technical solution, the spray barrel is installed on the mounting frame through a swinging assembly, so that the angle of the spray barrel can be flexibly adjusted, so as to spray the water mist to the target area more accurately. At the same time, the spraying area can be effectively expanded. Multiple nozzles are installed on the spray barrel through an annular water pipe and extend into the inner wall of the spray barrel. The spray barrel is passed through the air outlet end of the air outlet pipe and its air outlet is set at one end close to the nozzle. In this way, the wind from the air outlet can blow the water sprayed by the nozzle into water mist, and the water mist can fully combine with the dust to form small water droplets, which helps to improve the dust reduction effect.

[0009] Optionally, the spray mechanism also includes a first water pump installed on the water tank, and a fan installed on the frame, the air outlet of the fan is connected to the air outlet pipe, the water inlet of the first water pump is connected to the water tank, the water outlet of the first water pump is connected to a pressure water pipe, and the pressure water pipe is connected to the annular water pipe through a first connecting pipe.

[0010] By adopting the above technical solution, a high-pressure water flow is generated by the operation of the first water pump. The high-pressure water flow passes through the pressure water pipe, the first connecting pipe and the annular water pipe, and is finally sprayed out from multiple nozzles. The high-speed water flow can be continuously sprayed into the spray barrel through the multiple nozzles. The fan generates a pressurized air flow, which is discharged from the spray barrel at a high speed under the guidance of the air outlet pipe. The water flow sprayed from the multiple nozzles is blown away and separated to form water mist, which helps to improve the efficiency and effect of water mist generation.

[0011] Optionally, the spray assembly includes a spray pipe and a plurality of nozzles arranged on the spray pipe, the spray pipe is installed on the top outer wall of the spray barrel near one end of the spray head, the nozzle is provided with a slit nozzle, the slit nozzle is facing the direction of the spray barrel outlet, and the length direction of the slit nozzle is horizontally arranged.

[0012] By adopting the above technical solution, high-pressure water flow is provided to multiple nozzles through the injection pipe. The nozzles are arranged on the top wall of the spray barrel. Water curtains are sprayed through the fine slit nozzles of the nozzles to form multiple water curtains on the top of the spray barrel, which helps the water curtains to fall and converge with small water droplets generated by water mist and dust to form large water droplets, thereby improving the dust reduction efficiency and effect.

[0013] Optionally, the injection mechanism further includes a second water pump installed on the water tank, a water inlet of the second water pump is connected to the water tank, and a water outlet of the second water pump is connected to the injection pipe via a second connecting pipe.

[0014] By adopting the above technical solution, a high-pressure water flow is generated by the second water pump, and the high-pressure water flow is continuously delivered to the nozzle through the second connecting pipe and the injection pipe, and a water curtain is sprayed through the slit nozzle, which helps to increase the spray area of ​​the water curtain and thereby improve the dust reduction efficiency and effect.

[0015] Optionally, the swing assembly includes a turntable horizontally connected to the mounting frame, a rotating cylinder driving the turntable to rotate, one end of the rotating cylinder is hinged to the turntable, and the other end is hinged to the mounting frame, the end of the spray tube away from the nozzle is hinged to the turntable, and also includes a swing cylinder driving the outlet of the spray tube to swing up and down, one end of the swing cylinder is hinged to the turntable, and the other end is hinged to the end of the spray tube close to the nozzle.

[0016] By adopting the above technical solution, the swing assembly can realize the horizontal rotation and up and down swing of the spray barrel outlet, so that the water mist and water curtain can cover a larger area of ​​blasting and demolition area, and the swing cylinder can make the spray barrel tilt downward to spray, which can significantly improve the dust reduction effect after building blasting. At the same time, the use of the rotating cylinder and the swing cylinder makes the spray angle adjustment more flexible, and the dust reduction spraying position can be quickly changed to improve the dust reduction efficiency.

[0017] Optionally, the spray assembly is installed on the frame via a lifting assembly, the lifting assembly includes a lifting frame installed on the frame, a lifting rack installed on the lifting frame, the mounting frame is slidably connected to the lifting frame along the length direction of the lifting rack, a lifting motor is installed on the mounting frame, a transmission gear is fixedly installed on the output shaft of the lifting motor, and the transmission gear is meshed with the lifting rack for transmission.

[0018] By adopting the above technical solution, the spray assembly can drive the transmission gear to engage with the lifting rack through the lifting motor, so that the mounting frame can rise and fall and slide along the length direction of the lifting rack, thereby realizing the height adjustment of the spray assembly, so as to better adapt to blasting and demolition areas at different heights, ensure that the spray water curtain and water mist can evenly cover the entire working surface, and improve the dust reduction effect.

[0019] Optionally, the pressure water pipe is also connected to at least one annular water bag for reducing dust at the blasting point, one end of the annular water bag is an open end, and the other end is a closed end, the open end of the annular water bag is connected to the pressure water pipe through a third connecting pipe, and the blasting point is located within the circular ring of the annular water bag.

[0020] By adopting the above technical solution, the blasting point is located in the circle of the annular water bag. When the blasting point explodes, the annular water bag bursts instantly to form water droplets, which suppress the local dust generated at the blasting point, reduce dust diffusion, and improve dust suppression efficiency.

[0021] Optionally, a water valve is provided on one end of the third connecting pipe close to the pressure water pipe, and a sealing piece is provided on one end of the third connecting pipe close to the annular water bag. A plurality of water spray holes are provided on the sealing piece, and the open end of the annular water bag is mounted on the sealing piece through a pipe clamp.

[0022] By adopting the above technical scheme, water is supplied to the annular water bag through the water valve, the third connecting pipe and the sealing piece. The annular water bag is installed on the sealing piece through the pipe clamp, so as to block the water spray holes on the sealing piece. After the blasting point explodes, the annular water bag ruptures and water flows out from the water spray holes on the sealing piece, further performing local dust reduction in the area of ​​the blasting point, further reducing dust diffusion, and improving dust reduction efficiency. Closing the water valve after dust reduction helps save water.

[0023] In a second aspect, the present application provides a method for dust reduction during building demolition blasting, which adopts the following technical solution: A method for reducing dust during building demolition and blasting, based on the above-mentioned dust reduction device for building demolition and blasting, comprises the following steps: S1. Arrange multiple sets of the above-mentioned building demolition blasting dust reduction devices around the building to be demolished; S2. The annular water bag is installed around the blasting point and connected to the pressure water pipe with the third connecting pipe, and the water valve is in the open state; S3. Start the lifting assembly, move the spray assembly to the highest position of the lifting frame, and extend the piston rod of the swing cylinder so that the spray nozzle of the spray tube rises; S4. Start the injection mechanism and the spray mechanism to pre-spray the building to be blasted with a water curtain and water mist. When the work reaches a first preset time, the swing cylinder piston rod is retracted, the rotating cylinder piston rod is reciprocated and extended and retracted, and the building blasting is started; S5. After the building is blasted for a second preset time, the water valve is closed, and the spray gun continues to spray water mist and water curtain to the blasted building until a third preset time; S6. Start the lifting assembly and move the spray assembly to the lowest position of the lifting frame; S7. Close the injection mechanism and the spray mechanism, and retract the third connecting pipe.

[0024] By adopting the above technical solutions, the dust reduction method for building demolition blasting can effectively control and reduce the large amount of dust generated during the blasting process. Specifically: S1: Arrange multiple sets of dust suppression devices around the buildings to be blasted to ensure full coverage of the operation area and improve the dust suppression effect; S2: The annular water bag is installed around the blasting point and connected to the pressure water pipe through the third connecting pipe. The water valve is in the open state. The annular water bag can rupture at the moment of blasting and form a large number of water droplets, which can quickly capture local dust and effectively prevent dust from spreading; S3: Start the lifting assembly, move the spray assembly to the highest position, and raise the spray port of the spray barrel to facilitate spraying pretreatment of the building and prepare for subsequent operations; S4: Start the spray mechanism and the spray mechanism to spray the building with water curtain and water mist in advance. When the work reaches the first preset time, the spray barrel is rotated horizontally to cover the target area more accurately, and the building blasting is started. This process not only reduces the amount of dust generated in the initial stage, but also improves the efficiency of dust reduction in the later stage. S5: After the building is blasted for the second preset time, the water valve is closed, and the spray barrel continues to spray water mist and water curtain to the blasted building for the third preset time to ensure that all possible dust is completely captured and settled to avoid secondary pollution; S6: Start the lifting assembly and move the spray assembly to the lowest position to facilitate cleaning of the on-site equipment; S7: Finally, the injection mechanism and the spray mechanism are closed, and the third connecting pipe is retracted to complete the entire dust reduction process.

[0025] This method significantly improves the safety and environmental protection of blasting and demolition operations through multi-level and comprehensive dust reduction measures.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the cooperation of the spray assembly and the wind guide assembly, the water mist and dust can be fully mixed to form small water droplets, which are then combined with the water curtain sprayed by the spray assembly to form large water droplets. The large water droplets fall quickly under the action of gravity, thereby effectively suppressing the dust generated when the blasting building collapses; 2. The swing assembly allows the spray barrel to flexibly adjust its angle, expand the spraying area, ensure that the water mist and water curtain can evenly cover a larger blasting and demolition area, and improve dust reduction efficiency; 3. The lifting component can realize the height adjustment of the spray component to adapt to blasting and demolition areas at different heights, ensuring that the spray water curtain and water mist can evenly cover the entire working surface, further improving the dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a dust reduction device for building blasting and demolition disclosed in this application from the left side perspective.

[0028] Figure 2 It is a partial cross-sectional view of the spray assembly disclosed in the present application.

[0029] Figure 3 This is a structural schematic diagram of a dust reduction device for building blasting and demolition disclosed in this application from the right side perspective.

[0030] Figure 4 for Figure 3 A partial enlarged view of the middle I position.

[0031] Figure 5 This is a structural schematic diagram of a dust reduction device for building blasting and demolition disclosed in the present application from a back perspective.

[0032] Figure 6 It is a partial cross-sectional view of the assembly of the annular water bag and the sealing member disclosed in the present application.

[0033] Description of reference numerals: 1. Frame; 11. Roller; 2. Water storage tank; 3. Spray mechanism; 31. Spray assembly; 311. Mounting frame; 3111. Guide wheel; 312. Spray tube; 313. Annular water pipe; 314. Spray head; 32. Wind guide assembly; 321. Air outlet pipe; 3211. Air outlet end; 33. First water pump; 34. Fan; 341. Wind chamber; 35. Pressure water pipe; 36. First connecting pipe; 37. Annular water bag; 38. Third connecting pipe; 381. Water valve; 382. Pipe clamp; 383. Sealing piece; 3831. Water spray hole; 4. Spray mechanism; 41. Spray assembly; 411. Spray pipe; 412. Nozzle; 4121. Slit nozzle; 42. Second water pump; 43. Second connecting pipe; 5. Swing assembly; 51. Turntable; 52. Rotating cylinder; 53. Swinging cylinder; 6. Lifting assembly; 61. Lifting frame; 62. Lifting rack; 63. Lifting motor; 64. Transmission gear. DETAILED DESCRIPTION

[0034] The following will be combined Figures 1 to 6 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0035] The buildings in this application refer to low-rise buildings and multi-story buildings. Low-rise buildings are buildings with a height not exceeding 10 meters, and multi-story buildings are buildings with a height not exceeding 24 meters. Most of these buildings are brick-concrete structures. A large amount of dust will be generated during the blasting and demolition process, which seriously affects construction safety and environmental protection. For this reason, this application is mainly used for dust reduction devices for blasting and demolition of low-rise buildings or multi-story buildings.

[0036] The present application discloses a dust suppression device for building demolition blasting, referring to Figure 1 and Figure 2, including a frame 1 and a water tank 2, the water tank 2 is installed on the frame 1, and also includes a spray mechanism 4 connected to the water tank 2 for spraying a water curtain to the blasting demolition area, and a spray mechanism 3 for spraying water mist, the spray mechanism 3 includes a spray component 31 and a wind guide component 32, the wind guide component 32 is installed on the frame 1, the wind guide component 32 is provided with an air outlet pipe 321, the air outlet end 3211 of the air outlet pipe 321 is connected to the spray component 31, the spray mechanism 4 includes a spray component 41 for spraying a water curtain, and the spray component 41 is installed on the spray component 31; the frame 1 is used to support the entire device to facilitate the installation according to the building The water tank 2 is used to provide the water source required for spraying water curtain and spraying to the blasting area. An upper water inlet is provided on the top wall of the water tank 2, and the upper water inlet is connected to an external water pipe or a fire hose to meet the water needs of the water tank 2 during the dust reduction process. The spray component 31 sprays water mist to the blasting area under the action of wind force at the air outlet end 3211 of the wind guide component 32, so that the water mist and dust are fully mixed to form small water droplets. The small water droplets meet the water curtain sprayed by the spray component 41 to form large water droplets. The large water droplets fall quickly under the action of gravity, thereby effectively suppressing the dust generated when the blasting building collapses.

[0037] Reference Figure 3 and Figure 4The spray assembly 31 includes a mounting frame 311 and a spray barrel 312. The spray barrel 312 is mounted on the mounting frame 311 through a swing assembly 5. An annular water pipe 313 is wound around the outer wall of one end of the spray barrel 312. A plurality of nozzles 314 are arranged on the annular water pipe 313. The number of nozzles 314 in the embodiment of the present application is 8, and the number is set according to the diameter of the spray barrel 312. Any number that can meet the use requirements is acceptable. The nozzles 314 are evenly distributed on the annular water pipe 313. A through hole for passing the nozzle 314 is provided on the wall of the spray barrel 312 relative to the nozzle 314, and the nozzle of the nozzle 314 faces the axis of the spray barrel 312. The spray barrel 312 is passed through the air outlet end 3211 of the air outlet pipe 321. The air outlet pipe 321 is a plastic hose with steel wire that can withstand a certain wind pressure, which is convenient for connecting with the fan 34. When the spray barrel 312 moves up and down, the plastic hose can move with the spray barrel 312. The air outlet end 3211 is a steel hard pipe. , and is fixedly connected to the inner wall of the spray barrel 312 through a steel plate arranged axially along the air outlet pipe 321, the air outlet of the air outlet end 3211 is located at one end of the spray barrel 312 close to the nozzle 314, and the diameter of the air outlet is smaller than the diameter of the air outlet pipe 321, which helps to increase the wind speed of the wind discharged from the air outlet, the spray barrel 312 is installed on the mounting frame 311 through the swing component 5, so that the spray barrel 312 can flexibly adjust the angle, so as to more accurately spray the water mist to the target area, and at the same time, can effectively expand the spraying area, multiple nozzles 314 are installed on the spray barrel 312 through the annular water pipe 313 and extend into the inner wall of the spray barrel 312, the air outlet end 3211 of the air outlet pipe 321 is penetrated by the spray barrel 312 and its air outlet is set at one end close to the nozzle 314, so that the wind at the air outlet can blow the water flow sprayed by the nozzle 314 into water mist, expand the contact area with the dust and form small water droplets, which helps to improve the dust reduction effect.

[0038] Reference Figure 4 and Figure 5The spray mechanism 3 also includes a first water pump 33 installed on the water storage tank 2, and a fan 34 installed on the frame 1. The air outlet of the fan 34 is provided with a wind bin 341, and the wind bin 341 helps to store air volume and air pressure. The air outlet pipe 321 is connected to the wind bin 341. The wind speed range of the fan 34 in the embodiment of the present application is 15 to 25 m / s. The wind speed range of the fan 34 in other embodiments of the present application is greater than 25 m / s. The water inlet of the first water pump 33 is connected to the water storage tank 2, and the water outlet of the first water pump 33 is connected to the pressure water pipe 35. The pressure water pipe 35 is connected to the annular water pipe 313 through the first connecting pipe 36. The first connecting pipe 36 is capable of withstanding A rubber hose with a steel wire at a certain water pressure, both ends of the rubber hose are connected to the pressure water pipe 35 and the annular water pipe 313 through joints respectively, and a high-pressure water flow is generated by the operation of the first water pump 33. The high-pressure water flow passes through the pressure water pipe 35, the first connecting pipe 36 and the annular water pipe 313, and is finally sprayed out from multiple nozzles 314. High-speed water flow can be continuously sprayed into the spray barrel 312 through the multiple nozzles 314. The fan 34 generates a pressurized high-speed air flow, which is discharged from the spray barrel 312 at a high speed under the guidance of the air outlet pipe 321, and the water flow sprayed from the multiple nozzles 314 is blown away and separated to form water mist, which helps to improve the efficiency and effect of water mist generation.

[0039] Reference Figure 2 and Figure 4 The spray assembly 41 includes a spray pipe 411 and a plurality of nozzles 412 arranged on the spray pipe 411. The spray pipe 411 is installed on the top outer wall of the spray barrel 312 near the nozzle 314. The nozzle 412 is provided with a slit nozzle 4121. The width of the slit nozzle 4121 in the embodiment of the present application can be selected to be 0.5 mm to 1.5 mm, and any size that can meet the water curtain range sprayed by the nozzle 412 and the spray range of the spray barrel 312 is suitable. The slit nozzle 4121 faces the direction of the outlet of the spray barrel 312, and the slit nozzle 4121 is oriented to the spray barrel 312 outlet. 121 is arranged horizontally in the length direction; high-pressure water flow is provided to multiple nozzles 412 through the injection pipe 411. The number of nozzles 412 in the embodiment of the present application is 4, and the number of nozzles is set according to the diameter of the spray barrel. Any number that can meet the use requirements can be used. The nozzle 412 is arranged on the top wall of the spray barrel 312, and a water curtain is sprayed through the slit nozzle 4121 of the nozzle 412 to form multiple horizontal water curtains on the top of the spray barrel 312. In this way, the falling water curtain meets the small water droplets generated by the water mist and dust and converges to form large water droplets, thereby improving the dust reduction efficiency and effect.

[0040] Reference Figure 5The injection mechanism 4 also includes a second water pump 42 installed on the water tank 2. The water pump pressure parameter of the second water pump 42 in the embodiment of the present application is selected as 0.5 to 1.2 MPa. Other embodiments of the present application select a high pressure parameter of 1.2 MPa to meet the water pressure needs of higher buildings. The water inlet of the second water pump 42 is connected to the water tank 2, and the water outlet of the second water pump 42 is connected to the injection pipe 411 through a second connecting pipe 43. The second water pump 42 generates a high-pressure water flow when it works. The second connecting pipe 43 and the first connecting pipe 36 are made of the same material. The high-pressure water flow is continuously delivered to the nozzle 412 through the second connecting pipe 43 and the injection pipe 411, and a water curtain is sprayed through the slit nozzle 4121, which helps to increase the injection area for generating the water curtain, thereby improving the dust reduction efficiency and effect.

[0041] Reference Figures 2 to 4 The swing assembly 5 includes a turntable 51, a rotating cylinder 52 and a swing cylinder 53. The turntable 51 is horizontally rotatably connected to the mounting frame 311. The mounting frame 311 is provided with a rotating shaft. The turntable 51 is rotatably connected to the rotating shaft through a bearing. One end of the rotating cylinder 52 is hinged to the turntable 51, and the other end is hinged to the mounting frame 311. The rotating cylinder 52 drives the turntable 51 to rotate, thereby driving the spray barrel 312 to rotate horizontally. The end of the spray barrel 312 away from the nozzle 314 is hinged to the turntable 51. The swing cylinder 53 One end of 3 is hinged to the turntable 51, and the other end is hinged to the end of the spray barrel 312 near the nozzle 314. The swing cylinder 53 drives the outlet of the spray barrel 312 to swing up and down. The swing assembly 5 can realize the horizontal rotation and up and down swing of the outlet of the spray barrel 312, so that the water mist and water curtain can cover a larger area of ​​the blasting and demolition area. The swing cylinder 53 can make the spray barrel 312 tilt downward for spraying, which can effectively suppress the rise of dust, thereby significantly improving the dust reduction effect after the building is blasted. At the same time, the use of the rotating cylinder 52 and the swing cylinder 53 makes the spray and spray curtain angle adjustment more flexible and accurate, further improving the applicability and efficiency of the dust reduction device.

[0042] Reference Figure 1 and Figure 3The spray assembly 31 is installed on the frame 1 through the lifting assembly 6. The lifting assembly 6 includes a lifting frame 61, a lifting rack 62, a lifting motor 63 and a transmission gear 64. The lifting frame 61 is installed on the frame 1, and the lifting rack 62 is installed on the lifting frame 61. The mounting frame 311 is slidably connected with the lifting frame 61 along the length direction of the lifting rack 62. In the embodiment of the present application, a guide wheel 3111 is rotatably provided on the mounting frame 311. The guide wheel 3111 is rollingly connected with the lifting frame 61 along the direction of the lifting rack 62. The guide wheel 3111 is used for sliding guidance with the lifting frame 61. Other embodiments of the present application use a guide rail slider The structure realizes the sliding connection between the lifting frame 61 and the mounting frame 311, the lifting motor 63 is installed on the mounting frame 311, and the output shaft of the lifting motor 63 is fixedly installed with a transmission gear 64, and the transmission gear 64 is meshed and transmitted with the lifting rack 62; the spray assembly 31 can drive the transmission gear 64 to mesh and transmit with the lifting rack 62 through the lifting motor 63, so that the mounting frame 311 can be lifted and lowered along the length direction of the lifting rack 62, thereby realizing the height adjustment of the spray assembly 31, so as to better adapt to the blasting and demolition areas at different heights, ensure that the spray water curtain and water mist can evenly cover the entire working surface, and improve the dust reduction effect.

[0043] Reference Figure 1 The pressure water pipe 35 is also connected to at least one annular water bag 37 for reducing dust at the blasting point. One end of the annular water bag 37 is an open end and the other end is a closed end. The open end of the annular water bag 37 is connected to the pressure water pipe 35 through a third connecting pipe 38. The annular water bag 37 is made of plastic that can withstand a certain water pressure. The blasting point is located in the ring of the annular water bag 37; the blasting point is the location for loading explosives, and the annular water bag 37 is fixed around the explosives by bundling or bonding. When the blasting point explodes, the water in the annular water bag 37 instantly explodes to form water droplets, and diffuses around the blasting point, thereby reducing the local dust generated at the blasting point, reducing dust diffusion, and improving dust reduction efficiency.

[0044] Reference Figure 6A water valve 381 is provided on one end of the third connecting pipe 38 close to the pressure water pipe 35, a plugging piece 383 is provided on one end of the third connecting pipe 38 close to the annular water bag 37, a plurality of water spray holes 3831 are arranged on the plugging piece 383, the plugging piece 383 is provided with a straight pipe portion fixedly connected to the third connecting pipe 38 and an arc portion located at one end of the straight pipe portion away from the third connecting pipe 38, a plurality of water spray holes 3831 are respectively located on the straight pipe portion and the arc portion, the open end of the annular water bag 37 is mounted on the plugging piece 383 through a pipe clamp 382, ​​in order to facilitate the connection between the annular water bag 37 and the pressure water pipe 35, the third connecting pipe 38 can be a combined installation structure of a hose and a hard pipe, and is connected by a hose where a turn is required, so as to realize the water connection of different blasting points, and the plugging piece 383 is a steel The blasting point is set at a position close to the closed end of the annular water bag 37, and the blocking piece 383 is fixed at a position far away from the blasting point, which helps to reduce the damage to the blocking piece 383 after the blasting point is blasted. Water is supplied to the annular water bag 37 through the water valve 381, the third connecting pipe 38 and the blocking piece 383. The annular water bag 37 is installed on the blocking piece 383 through the pipe clamp 382, ​​so that the water spray hole 3831 on the blocking piece 383 is connected to the annular water bag 37. After the blasting point is blasted, the annular water bag 37 ruptures and water flows out from the water spray hole 3831 on the blocking piece 383, covering the range of 1 to 3 meters around the blasting point, and further performing local dust reduction in the area of ​​the blasting point, which helps to reduce dust diffusion and improve dust reduction efficiency. After dust reduction, closing the water valve 381 helps to save water.

[0045] The implementation principle of the embodiment of the present application is as follows: the annular water bag 37 is installed around the blasting point, and is connected to the pressure water pipe 35 by the third connecting pipe 38, and the water valve 381 is in an open state; the lifting motor 63 is started to move the spray assembly 31 to the highest position of the lifting frame 61, and the piston rod of the swing cylinder 53 is extended to make the outlet of the spray barrel 312 rise; the second water pump 42, the first water pump 33 and the fan are started to pre-spray the water curtain and water mist on the building to be blasted, and when the working reaches the first preset time, the piston rod of the swing cylinder 53 is retracted, and the rotating cylinder 52 is activated. The plug rod extends and retracts reciprocatingly, and the building blasting is started; after the building blasting continues for the second preset time, the water valve 381 is closed, and the spray tube 312 continues to spray water mist and water curtain to the blasted building until the third preset time; the lifting motor 63 is started to move the spray assembly 31 to the lowest position of the lifting frame 61; the spray mechanism 4 and the spray mechanism 3 are closed, and the third connecting pipe 38 is retracted; through reasonable structural design and component configuration, the entire dust reduction device can efficiently and accurately cover the entire working area during the blasting and demolition process, and can flexibly adjust the spraying angle and height. In particular, the synergistic effect of the spray assembly 31 and the spray assembly 41 can form water mist and water curtain, and the water mist can be fully mixed with the dust to form small water droplets. The water curtain covering the water mist falls and forms large water droplets with the small water droplets. The large water droplets fall quickly under the action of gravity, which can effectively inhibit the diffusion of dust and improve the dust reduction effect. At the same time, the selection and optimization design of each component also ensure the reliability and durability of the device, reduce maintenance costs, and improve overall practicality.

[0046] The present application also discloses a method for reducing dust during building demolition and blasting, based on the above-mentioned dust reduction device for building demolition and blasting, comprising the following steps: S1. Arrange multiple sets of the above-mentioned building demolition blasting dust reduction devices around the building to be demolished; S2. The annular water bag 37 is installed around the blasting point, and is connected to the pressure water pipe 35 with a third connecting pipe 38, and the water valve 381 is in the open state; S3. Start the lifting assembly 6, move the spray assembly 31 to the highest position of the lifting frame 61, and extend the piston rod of the swing cylinder 53 so that the outlet of the spray cylinder 312 rises; S4 start the spray mechanism 4 and the spray mechanism 3, the building to be blasted pre-spray water curtain and water mist, when the work reaches the first preset time, the swing cylinder 53 piston rod retracted, the rotating cylinder 52 piston rod reciprocating extension and retraction, and start the building blasting; S5. After the building is blasted for a second preset time, the water valve 381 is closed, and the spray gun 312 continues to spray water mist and water curtain to the blasted building until the third preset time; S6. Start the lifting assembly 6 and move the spray assembly 31 to the lowest position of the lifting frame 61; S7. Close the injection mechanism 4 and the spray mechanism 3, and retract the third connecting pipe 38.

[0047] The dust reduction method for building demolition blasting can effectively control and reduce the large amount of dust generated during the blasting process. Specifically: S1: Arrange multiple sets of dust suppression devices around the buildings to be blasted to ensure full coverage of the operation area and improve the dust suppression effect; S2: The annular water bag 37 is installed around the blasting point and connected to the pressure water pipe 35 through the third connecting pipe 38. After the water valve 381 is opened, the annular water bag 37 can rupture at the moment of blasting to form a large number of water droplets, quickly capturing local dust. At the same time, the water spray holes 3831 on the blocking member 383 form a directional water jet, covering the range of 1 to 3 meters around the blasting point, effectively preventing the spread of dust; S3: Start the lifting assembly 6, move the spray assembly 31 to the highest position, and raise the spray port of the spray barrel 312 to facilitate spraying pretreatment of the building and prepare for subsequent operations; S4: Start the spray mechanism 4 and the spray mechanism 3, and spray the building with water curtain and water mist in advance to ensure that the surface of the building is fully wetted. When the work reaches the first preset time, adjust the angle of the spray barrel 312 to make it cover the target area more accurately, and start the building blasting. The first preset time in the embodiment of the present application is 3 minutes to 10 minutes, and the first preset time in other embodiments of the present application is greater than 10 minutes. This process not only reduces the amount of dust generated in the initial stage, but also improves the efficiency of dust reduction in the later stage; S5: After the building is blasted, the water valve 381 is closed after the second preset time. The second preset time in the embodiment of the present application is 10 to 20 seconds. The spray barrel 312 continues to spray water mist and water curtain to the blasted building until the third preset time. The third preset time in the embodiment of the present application is 5 to 10 minutes. The third preset time in other embodiments of the present application is greater than 10 minutes, ensuring that all dust that may be generated is completely captured and settled to avoid secondary pollution; S6: Start the lifting assembly 6 to move the spray assembly 31 to the lowest position to facilitate cleaning of the on-site equipment; S7: Finally, the injection mechanism 4 and the spray mechanism 3 are closed, and the third connecting pipe 38 is retracted to complete the entire dust reduction process.

[0048] This method significantly improves the safety and environmental protection of blasting and demolition operations through multi-level and comprehensive dust reduction measures.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application in sequence. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dust suppression device for building blasting and demolition, characterized in that: The invention comprises a frame (1), a water storage tank (2) mounted on the frame (1), a spray mechanism (3) and a jet mechanism (4) connected to the water storage tank (2), the spray mechanism (3) comprising a spray assembly (31) and a wind guide assembly (32), the wind guide assembly (32) being mounted on the frame (1), the wind guide assembly (32) being provided with an air outlet pipe (321), the air outlet end (3211) of the air outlet pipe (321) being connected to the spray assembly (31), and the jet mechanism (4) comprising a jet assembly (41) for jetting a water curtain, the jet assembly (41) being mounted on the spray assembly (31).

2. The dust suppression device for building demolition blasting according to claim 1, characterized in that: The spray assembly (31) comprises a mounting frame (311) and a spray barrel (312); the spray barrel (312) is mounted on the mounting frame (311) via a swing assembly (5); an annular water pipe (313) is arranged around the outer wall of one end of the spray barrel (312); a plurality of nozzles (314) are arranged on the annular water pipe (313); a through hole for penetrating the nozzles (314) is arranged on the barrel wall of the spray barrel (312) opposite to the nozzles (314); an air outlet end (3211) of the air outlet pipe (321) penetrates the spray barrel (312) and is fixedly connected to the inner wall of the spray barrel (312); and an air outlet of the air outlet end (3211) is located at one end of the spray barrel (312) close to the nozzles (314).

3. The dust suppression device for building demolition blasting according to claim 2, characterized in that: The spray mechanism (3) further comprises a first water pump (33) mounted on the water storage tank (2), and a fan (34) mounted on the frame (1), wherein the air outlet of the fan (34) is connected to the air outlet pipe (321), the water inlet of the first water pump (33) is connected to the water storage tank (2), the water outlet of the first water pump (33) is connected to a pressure water pipe (35), and the pressure water pipe (35) is connected to the annular water pipe (313) via a first connecting pipe (36).

4. The dust suppression device for building demolition blasting according to claim 3, characterized in that: The spray assembly (41) comprises a spray pipe (411) and a plurality of nozzles (412) arranged on the spray pipe (411); the spray pipe (411) is mounted on the top outer wall of the spray barrel (312) at one end close to the spray head (314); the nozzle (412) is provided with a slit nozzle (4121); the slit nozzle (4121) faces the direction of the outlet of the spray barrel (312), and the length direction of the slit nozzle (4121) is arranged horizontally.

5. The dust suppression device for building demolition blasting according to claim 4, characterized in that: The injection mechanism (4) further comprises a second water pump (42) mounted on the water storage tank (2), wherein a water inlet of the second water pump (42) is connected to the water storage tank (2), and a water outlet of the second water pump (42) is connected to the injection pipe (411) via a second connecting pipe (43).

6. The dust suppression device for building demolition blasting according to claim 5, characterized in that: The swing assembly (5) comprises a turntable (51) connected to the mounting frame (311) for horizontal rotation, a rotating cylinder (52) for driving the turntable (51) to rotate, one end of the rotating cylinder (52) being hinged to the turntable (51), and the other end being hinged to the mounting frame (311), one end of the spray barrel (312) away from the spray head (314) being hinged to the turntable (51), and further comprising a swing cylinder (53) for driving the outlet of the spray barrel (312) to swing up and down, one end of the swing cylinder (53) being hinged to the turntable (51), and the other end being hinged to one end of the spray barrel (312) close to the spray head (314).

7. The dust suppression device for building demolition blasting according to claim 6, characterized in that: The spray assembly (31) is mounted on the frame (1) via a lifting assembly (6); the lifting assembly (6) comprises a lifting frame (61) mounted on the frame (1), a lifting rack (62) mounted on the lifting frame (61); the mounting frame (311) is slidably connected to the lifting frame (61) along the length direction of the lifting rack (62); a lifting motor (63) is mounted on the mounting frame (311); a transmission gear (64) is fixedly mounted on the output shaft of the lifting motor (63); and the transmission gear (64) is meshed with the lifting rack (62) for transmission.

8. The dust suppression device for building blasting and demolition according to claim 7, characterized in that: The pressure water pipe (35) is also connected to at least one annular water bag (37) for reducing dust at the blasting point; one end of the annular water bag (37) is an open end and the other end is a closed end; the open end of the annular water bag (37) is connected to the pressure water pipe (35) via a third connecting pipe (38); and the blasting point is located within the circular ring of the annular water bag (37).

9. The dust suppression device for building blasting and demolition according to claim 8, characterized in that: A water valve (381) is provided at one end of the third connecting pipe (38) close to the pressure water pipe (35), and a blocking piece (383) is provided at one end of the third connecting pipe (38) close to the annular water bag (37). A plurality of water spray holes (3831) are provided on the blocking piece (383), and the open end of the annular water bag (37) is mounted on the blocking piece (383) via a pipe clamp (382).

10. A method for reducing dust during building demolition blasting, based on the dust reduction device for building demolition blasting according to claim 9, comprising the following steps: S1. Arrange multiple sets of the above-mentioned building demolition blasting dust reduction devices around the building to be demolished; S2. The annular water bag (37) is installed around the blasting point, and connected to the pressure water pipe (35) by the third connecting pipe (38), and the water valve (381) is in an open state; S3. Start the lifting assembly (6), move the spray assembly (31) to the highest position of the lifting frame (61), and extend the piston rod of the swing cylinder (53) so that the spray port of the spray cylinder (312) rises; S4. Start the spray mechanism (4) and the spray mechanism (3) to pre-spray the building to be blasted with a water curtain and water mist. When the operation reaches a first preset time, retract the piston rod of the swing cylinder (53), reciprocately extend and retract the piston rod of the rotating cylinder (52), and start blasting the building; S5. After the building is blasted for a second preset time, the water valve (381) is closed, and the spray barrel (312) continues to spray water mist and water curtain to the blasted building for a third preset time; S6. Start the lifting assembly (6) to move the spray assembly (31) to the lowest position of the lifting frame (61); S7. Turn off the injection mechanism (4) and the spray mechanism (3), and retract the third connecting pipe (38).

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