Dust falling device for indoor building construction

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a dust falling device for indoor building construction, which comprises a case, a driving motor and a fan synchronously following an output shaft of the driving motor, rollers are mounted at the bottom of the case; a controller, a dust suction box, a water tank and a dust storage hopper are arranged in the case, and the fan is located in the dust suction box; a water level sensor and a water pump which are electrically connected with the controller are arranged in the water tank; the water pump switch is electrically connected with the water pump; the motor switch is electrically connected with the driving motor; the alarm device is electrically connected with the controller; an exhaust port, a dust suction port and a dust discharge port which are communicated with an inner cavity of the dust suction box are formed in the dust suction box, and a dust filter screen is arranged on the exhaust port; the dust exhaust pipe is communicated with the dust exhaust port, the dust suction pipe is communicated with the dust suction port, the dust suction end of the dust suction pipe extends out of the case, and the lower port of the dust exhaust pipe extends into the dust storage hopper; an atomizing nozzle is arranged in the dust collection cavity, and a water inlet of the atomizing nozzle is communicated with a water outlet of the water pump. Dust is humidified, and the dust falling effect is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to a dust suppression device for indoor building construction. Background Technology

[0002] Construction processes generate a large amount of dust, especially indoor operations such as cutting, grinding, and demolition. The enclosed environment makes the dust difficult to disperse, polluting the environment and affecting the health of construction workers. To create a safe and clean working environment, construction sites are generally equipped with dust suppression equipment, currently mainly using water mist spraying and vacuuming. However, water mist spraying only hydrates the dust, causing it to settle on the ground. The dust remains, and when the water evaporates, workers walking around will still stir up the dust. To prevent dust from being stirred up, frequent or continuous water spraying is necessary, but in indoor environments, water evaporates slowly, leading to slippery floors and increasing the risk of accidents. Therefore, vacuuming devices are generally used for dust removal at indoor construction sites.

[0003] Currently, common indoor dust collection devices typically extract dust through suction pipes fixed to the building structure, such as the dust collection systems commonly used in metal smelting workshops. These systems are large and cannot be moved flexibly according to the construction schedule, making installation and relocation inconvenient. Furthermore, these indoor dust collection devices collect dust into a hopper after suctioning it through pipes without any subsequent dust treatment. Heavier dust particles tend to accumulate in the pipe system, which can easily damage the power components of the suction system. Cleaning the dust-laden pipes also requires working at height, making maintenance inconvenient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dust suppression device for indoor building construction, which humidifies and treats the inhaled dust to improve the dust suppression effect, facilitates device transfer, and improves the safety and reliability of the device.

[0005] The technical solution adopted by this invention to solve this technical problem is: a dust suppression device for indoor building construction, comprising a chassis, a drive motor, and a fan that moves synchronously with the output shaft of the drive motor; at least four sets of rollers are evenly installed on the bottom of the chassis; the chassis is equipped with a controller and a dust collection box, a water tank, and a dust storage hopper arranged from top to bottom, the dust collection box having a dust collection chamber, and the fan located in the dust collection chamber; the water storage chamber of the water tank is equipped with a water level sensor and a water pump electrically connected to the controller; it also includes a water pump switch electrically connected to the water pump, a motor switch electrically connected to the drive motor, and an alarm device electrically connected to the controller; the top of the chassis is equipped with a heat dissipation vent; The dust collection box is provided with an exhaust port, a suction port, and a dust discharge port that communicate with the dust collection chamber. The exhaust port and the suction port are located on the upper part of the dust collection box. The exhaust port is provided with a dust filter screen, and the dust discharge port is located on the bottom wall of the dust collection box. It also includes a dust discharge pipe that communicates with the dust discharge port and a suction pipe that communicates with the suction port. The suction end of the suction pipe extends out of the casing, and the lower end of the dust discharge pipe extends into the dust collection hopper directly above it. An atomizing nozzle is provided inside the dust collection chamber, and the water inlet of the atomizing nozzle is connected to the water pump outlet. The upper part of the water tank is provided with a water inlet communicating with the water storage chamber, and a water inlet pipe is connected to the water inlet; the bottom of the water tank is provided with a drain outlet communicating with the water storage chamber, and a drain outlet is connected to the drain outlet, and an on / off valve is provided on the drain pipe; the water inlet of the water inlet pipe and the water outlet of the drain pipe both extend out of the casing.

[0006] Furthermore, the chassis includes a chassis body with a front opening, and the dust collection box, water tank, and dust hopper are all detachably installed inside the chassis body; a maintenance door is connected to the front of the chassis body and an electronic control board located below the maintenance door; one end of the maintenance door is hinged to one side of the chassis body via a first hinge shaft arranged axially in the vertical direction, and the other end of the maintenance door is detachably connected to the other side of the chassis body; the electronic control board is detachably connected to the chassis body, and the water pump switch, the motor switch, and the alarm device are all connected to the electronic control board; The dust collection hopper is located between the electronic control board and the bottom wall of the chassis body. The maintenance door, the electronic control board, and the front side wall of the dust collection hopper cooperate to seal the front opening of the chassis body. The heat dissipation vent on the top of the chassis body is located on the top of the chassis body.

[0007] Furthermore, the electronic control board is also equipped with a display screen, which is electrically connected to the controller.

[0008] Furthermore, the drive motor is fixedly mounted on the outer top wall of the dust collection box; an exhaust fan is provided on the heat dissipation vent of the chassis body, and ventilation openings are provided on the side wall of the chassis body; The dust collection box includes a detachably sealed upper box and a lower box, which together form the dust collection chamber; the drive motor is mounted on the upper box.

[0009] Furthermore, a first support plate is welded to the inner left side wall of the chassis body, and a second support plate is welded to the inner right side wall of the chassis body. The top surfaces of the first support plate and the second support plate are flush and overlap the same mounting plate. The lower chassis is mounted on the upper side of the mounting plate. The mounting plate is provided with a vertical clearance hole, and the dust exhaust pipe passes through the clearance hole. An installation limiting plate is fixedly connected to the inner rear side wall of the chassis body, and the installation limiting plate abuts against the installation plate or the lower chassis body in the front-rear direction.

[0010] Furthermore, the bottom wall of the dust collection chamber inside the dust collection box is an inclined surface structure arranged radially from the outside to the inside along the dust discharge port.

[0011] Furthermore, the dust collection chamber of the dust collection box is also provided with an inner filter screen. The outer periphery of the inner filter screen is connected to the inner wall of the upper box to divide the dust collection chamber into a filtration chamber and a dust settling chamber. The filtration chamber and the dust settling chamber are connected through the mesh of the inner filter screen. The fan is located inside the filter chamber, the atomizing nozzle is located inside the dust settling chamber, the exhaust port of the dust collection box is connected to the filter chamber, and the suction port and exhaust port of the dust collection box are both connected to the dust settling chamber.

[0012] Furthermore, the end of the suction pipe is provided with a suction pipe section that communicates with its inner cavity. The cross-sectional area of ​​the inner cavity of the suction pipe section gradually increases from the end away from the suction pipe to the end closer to the suction pipe. The dust discharge pipe is a rigid straight pipe structure perpendicular to the horizontal plane. The atomizing nozzles are disposed on the bottom wall of the dust collection chamber, and there are multiple atomizing nozzles, which are evenly distributed around the dust discharge port; the axial direction of the atomizing nozzles is perpendicular to the bottom wall of the dust collection chamber.

[0013] Furthermore, the dust collection chamber is also equipped with a humidity sensor for monitoring the humidity inside the device, and the humidity sensor is electrically connected to the controller.

[0014] Furthermore, the inner sidewall of the chassis is provided with guide rails and telescopic push rods, the length direction of the guide rails and the extension direction of the telescopic push rods are both arranged along the front-back direction; there are two guide rails, and the two guide rails are respectively installed on the inner sidewall of the chassis; the fixed end of the telescopic push rod is fixedly connected to the chassis. The dust hopper is provided with a connecting plate connected to the free end of the telescopic push rod and a slider that slides in the front-back direction with the guide rail. The front side of the dust hopper is provided with a handle and a limiting plate. When the dust hopper is located at the rearmost extreme position inside the chassis, the limiting plate is located at the front side of the chassis and abuts against its side wall, and the free end of the telescopic push rod is located at the rearmost extreme position. It also includes a pop-up switch installed on the chassis for controlling the telescopic push rod's extension and retraction movement.

[0015] Compared with the prior art, the beneficial effects of the present invention are: it provides a dust suppression device for indoor construction, which hydrates the dust drawn into the dust collection chamber by setting atomizing nozzles inside the dust collection box, causing the dust to fall rapidly and be collected into the dust collection hopper along the dust discharge pipe. The dust collection hopper is detachably connected to the casing, so that it can be removed for cleaning when the dust is full. Since the dust is hydrated and moistened, it avoids secondary dust re-entrainment when cleaning the dust collection hopper, ensuring the dust suppression effect on site; by integrating the dust collection box, water tank, and dust collection hopper into a casing with wheels, the entire device is convenient to use. The system facilitates on-site relocation, saving manpower. A water level monitor is installed to monitor the water level in the tank in real time. A controller, electrically connected to the water level monitor, water pump switch, and motor switch, processes and judges whether the water level feedback from the monitor is within a safe range. Once the water level in the tank reaches the warning level, the controller shuts off the water pump and the motor. An alarm device electrically connected to the controller provides an alarm for abnormal water levels, reminding on-site construction personnel to replenish water in the tank in a timely manner, ensuring continuous dust suppression operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the axial structure of the present invention; Figure 2 This is a structural diagram showing the maintenance door in the open position; Figure 3 This is a schematic diagram of the assembly structure of the dust collection box, motor, first tray, and second tray; Figure 4 It is along Figure 1 Post-section schematic diagram of the cross-section along the AA direction; Figure 5 This is a schematic diagram of the assembly structure of the dust collector and the chassis body; Figure 6 This is a schematic diagram of the electrical connections of the controller, water pump, water pump switch, drive motor, motor switch, humidity sensor, and water level sensor. Attached reference numerals: 1-Chassis; 10-Roller; 11-Chassis body; 12-Maintenance door; 13-Electrical control board; 14-First tray; 15-Second tray; 16-Mounting plate; 17-Mounting limit plate; 18-Heat vent; 21-Drive motor; 22-Fan; 3-Dust collection box; 301-Filter chamber; 302-Dust settling chamber; 31-Upper box; 32-Lower box; 33-Dust filter; 34-Suction pipe; 341-Suction pipe section; 35-Exhaust pipe; 3 6-Atomizing nozzle; 37-Filter screen; 4-Water tank; 41-Water pump; 42-Water injection pipe; 43-Drain pipe; 5-Dust hopper; 51-Connecting plate; 52-Handle; 53-Limit plate; 54-Slider; 61-Guide rail; 62-Telescopic push rod; 90-Controller; 91-Water level sensor; 92-Opening and closing valve; 93-Water pump switch; 94-Motor switch; 95-Humidity sensor; 96-Pop-up switch; 97-Display screen; 99-Alarm device. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0018] As attached Figure 1-6As shown, an indoor construction dust suppression device includes a housing 1, a drive motor 21, and a fan 22 that moves synchronously with the output shaft of the drive motor 21; at least four sets of rollers 10 are evenly installed on the bottom of the housing 1; characterized in that: the housing 1 is equipped with a controller 90 and a dust collection box 3, a water tank 4, and a dust collection hopper 5 arranged from top to bottom, the dust collection box 3, the water tank 4, and the dust collection hopper 5 are all detachably connected to the housing 1; the dust collection box 3 has a dust collection chamber, and the fan 22 is located in the dust collection chamber; the water tank 4 has a water level sensor 91 and a water pump 41 electrically connected to the controller 90 in its water storage chamber; it also includes a water pump switch 93 electrically connected to the water pump 41, a motor switch 94 electrically connected to the drive motor 21, and an alarm device electrically connected to the controller 90; the top of the housing 1 is equipped with a heat dissipation vent 18; the dust collection box 3 is equipped with a dust collection vent 18; and the fan 22 is equipped with a heat dissipation vent 18. The dust collection chamber 3 includes an exhaust port, a suction port, and a dust discharge port. The exhaust port and suction port are located on the upper part of the dust collection box 3. The exhaust port is equipped with a dust filter 33, and the dust discharge port is located on the bottom wall of the dust collection box 3. It also includes a dust discharge pipe 35 connected to the dust discharge port and a suction pipe 34 connected to the suction port. The suction end of the suction pipe 34 extends out of the housing 1, and the lower end of the dust discharge pipe 35 is located directly above the dust collection hopper 5. The dust collection chamber is equipped with... Atomizing nozzle 36 has its inlet connected to the outlet of water pump 41. The upper part of water tank 4 has an inlet connected to a water storage chamber, and an inlet pipe 42 is connected to the inlet. The bottom of water tank 4 has a drain outlet connected to the water storage chamber, and a drain pipe 43 is connected to the drain outlet. An on / off valve 92 is installed on the drain pipe 43. Both the inlet of the inlet pipe 42 and the outlet of the drain pipe 43 extend out of the casing 1. Water pump 41 can also be located outside water tank 4 with its inlet inside the water storage chamber of water tank 4.

[0019] The dust suppression device of the present invention can be moved by pushing the casing 1 and placed in an indoor construction site. When using the dust suppression operation of the present invention, the water storage chamber of the water tank 4 is filled with water, and the water inlet of the water pump 41 is submerged in the water. Simultaneously, the motor switch 94 is turned on to start the drive motor 21, and the water pump switch 93 is turned on to start the water pump 41. The output shaft of the drive motor 21 drives the fan 22 to rotate, creating a negative pressure between the dust collection chamber in the entire dust collection box 3 and the outside environment. This causes the dust from the construction site to be sucked into the dust collection chamber through the dust collection end port of the dust collection pipe 34. At the same time, the excess gas in the dust collection chamber is filtered by the dust filter screen 33 and discharged into the machine box 1, and then discharged through the heat dissipation vent 18 on the machine box 1. This achieves both gas discharge and heat dissipation of the drive motor 21. Meanwhile, the water pump 41 draws water from the water storage chamber into the atomizing nozzle 36. The atomizing nozzle 36 sprays water into the dust collection chamber. The atomized water combines with the dust in the dust collection chamber, causing the dust to liquefy and fall to the bottom of the dust collection chamber. Finally, it falls into the dust collection hopper 5 through the dust discharge port and the discharge pipe 35. When the dust collection hopper 5 has collected enough dust, the dust collection hopper 5 is removed from the machine box 1 for cleaning and then put back into the machine box 1. During operation, the water level sensor 91 monitors the liquid level in the water tank 4 in real time and transmits the detected data to the controller 90. When the liquid level is lower than the set warning value, the controller 90 controls the water pump switch 93 and the motor switch 94 to shut down and triggers an alarm. This, in turn, stops the water pump 41 and the drive motor 21 from working, preventing damage to the water pump 41 due to low water levels and preventing dust from entering the dust collection chamber and failing to fall, thus affecting the dust collection and dust suppression effect. After receiving the alarm, the construction personnel troubleshoot the problem and replenish the water tank 4 through the water inlet to improve the safety and reliability of the dust removal device. When the dust removal device is idle for a long time, the on / off valve on the drain pipe 43 of the water tank 4 is opened to drain the water from the storage chamber.

[0020] This invention utilizes an atomizing nozzle within the dust collection box 3 to hydrate the dust drawn into the dust collection chamber, causing it to fall rapidly and be collected in the dust collection hopper 5 along the dust discharge pipe 35. The dust collection hopper 5 is detachably connected to the casing 1, allowing it to be removed for cleaning once full. Because the dust is hydrated and moistened, secondary dust re-entrainment is avoided during cleaning of the dust collection hopper 5, ensuring effective dust suppression on-site. Integrating the dust collection box 3, water tank 4, and dust collection hopper 5 within the casing 1 equipped with wheels 10 facilitates on-site relocation of the entire device, saving manpower. A water level monitor 91 is also included. The water level in the water tank 4 is monitored in real time. A controller 90, which is electrically connected to the water level monitor 91, the water pump switch 93, and the motor switch 94, processes and judges whether the liquid level fed back by the water level monitor 91 is within the safe range. Once the water level in the water tank 4 reaches the warning water level, the controller 90 controls the water pump switch 93 to shut down the water pump 41 and controls the motor switch 94 to shut down the drive motor 21. An alarm device electrically connected to the controller 90 is set up to realize the water level abnormality alarm, thereby reminding the on-site construction personnel to replenish water in the water tank 4 in time to ensure the continuous dust suppression operation of the dust suppression device.

[0021] The chassis 1 has various structural forms. It can be a box structure formed by bending, welding or bolting sheet metal parts, or it can be a skeleton structure welded from angle steel and steel pipes and assembled from sheet metal parts. Preferably, the chassis 1 includes a chassis body 11 with a front opening. The dust collection box 3, water tank 4, and dust hopper 5 are all detachably installed inside the chassis body 11. A maintenance door 12 and an electronic control board 13 located below the maintenance door 12 are connected to the front of the chassis body 11. One end of the maintenance door 12 is hinged to one side of the chassis body 11 via a first hinge shaft arranged axially in the vertical direction, and the other end of the maintenance door 12 is detachably connected to the other side of the chassis body 11. The electronic control board 13 is detachably connected to the chassis body 11, and the water pump switch 93, the motor switch 94, and the alarm device are all connected to the electronic control board 13. The dust hopper 5 is located between the electronic control board 13 and the bottom wall of the chassis body 11. The front walls of the maintenance door 12, the electronic control board 13, and the dust hopper 5 cooperate to close the front opening of the chassis body 11. The dust collection box 3 and water tank 4 inside the chassis body 1 can be maintained by opening and closing the maintenance door 12. Generally, the maintenance door 12 and the chassis body 11 are hinged together using common hinge assemblies, with the pivot on the hinge assembly serving as the first hinge axis. The other end of the maintenance door 12 can be detachably connected to the chassis body 11 via bolts or pins, or via existing locking assemblies. The control board 13 is typically fixed to the chassis body 11 with bolts. The ventilation vent 18 on the top of the chassis 1 is located on the top of the chassis body 11.

[0022] The controller 90 is typically a PLC programmable controller, which is small in size and easy to install. Alarm devices can be common alarm lights and / or buzzers. To ensure easy identification of alarm types, preferably, the control board 13 also has a display screen 97, which is electrically connected to the controller 90. The controller 90 generates real-time data on the equipment's operating status and displays it on the display screen 97, facilitating equipment maintenance by on-site users.

[0023] The drive motor 21 drives the fan 22 to rotate, creating a vacuum structure inside the suction chamber. The drive motor 21 can be installed inside or outside the suction box 3. To prevent dust from entering the drive motor 21 and affecting its heat dissipation or causing damage, preferably, the drive motor 21 is fixedly installed on the outer top wall of the suction box 3; an exhaust fan is provided on the heat dissipation vent 18 on the chassis body 11, and ventilation openings are provided on the side wall of the chassis body 11. Installing the drive motor 21 on the outside of the suction box 3 facilitates its heat dissipation. The exhaust fan on the heat dissipation vent 18 of the chassis body 11 rotates to draw out hot air from inside the chassis 1, and cool air from outside the chassis 1 enters the chassis 1 through the ventilation openings to form an airflow, further achieving heat dissipation for the drive motor 21, preventing overheating damage to the drive motor 21, and extending its service life.

[0024] The dust collection box 3 is used to form a suction chamber with negative pressure and to fix it inside the housing 1. To facilitate the installation of the fan 22 and the atomizing nozzle 36 inside the suction chamber, specifically, the dust collection box 3 includes an upper box 31 and a lower box 32 that are detachably and sealed together, and the upper box 31 and the lower box 32 form the suction chamber; the drive motor 21 is mounted on the upper box 31.

[0025] The dust collection box 3 can be directly connected to the inner wall of the chassis body 11, or it can be connected through other structures. Considering that the entire dust collection box 3 has a certain weight, preferably, a first support plate 14 is welded to the inner left side wall of the chassis body 11, and a second support plate 15 is welded to the inner right side wall of the chassis body 11. The top surfaces of the first support plate 14 and the second support plate 15 are flush and overlap the same mounting plate 16. The lower box 32 is installed on the upper side of the mounting plate 16. The mounting plate 16 is provided with a vertical clearance hole, and the dust exhaust pipe 35 passes through the clearance hole. An installation limiting plate 17 is fixedly connected to the inner rear side wall of the chassis body 11. The installation limiting plate 17 abuts against the mounting plate 16 or the lower box 32 in the front-rear direction. The first tray 14 and the second tray 15 can be flat plates parallel to the horizontal plane, or they can be steel or bent sheet metal with an L-shaped cross-section. Preferably, the first tray 14 and the second tray 15 are angle steel structures welded to the chassis body 11 to facilitate welding to the chassis body 11. To ensure the installation reliability of the dust collection box 3, the upper box 31 is connected to the inner wall of the chassis body 11.

[0026] The suction chamber can be cylindrical, cuboid, or spherical. For ease of manufacturing, it is generally cylindrical. Preferably, the bottom wall of the suction chamber inside the dust collection box 3 is a sloping surface arranged radially from the outside to the inside downwards along the dust discharge port. Moist dust falling onto the bottom wall of the suction chamber will automatically slide down the slope to the dust discharge port, preventing dust accumulation in the suction chamber from affecting equipment operation.

[0027] The dust filter 33 is used to filter dust in the suction chamber, preventing dust from being discharged through the exhaust port on the dust collection box 3 and causing contamination inside the machine. As a further preferred embodiment, the suction chamber of the dust collection box 3 is also equipped with an inner filter 37. The outer periphery of the inner filter is connected to the inner wall of the upper housing 31, dividing the suction chamber into a filter chamber 301 and a dust settling chamber 302. The filter chamber 301 and the dust settling chamber 302 are connected through the mesh openings on the inner filter 37. The fan 22 is located inside the filter chamber 301, the atomizing nozzle 36 is located inside the dust settling chamber 302, the exhaust port of the dust collection box 3 is connected to the filter chamber 301, and both the suction port and the exhaust port of the dust collection box 3 are connected to the dust settling chamber 302. The mesh openings of filter screen 37 and dust filter screen 33 should be able to effectively filter dust. Filter screen 37 is used to ensure the cleanliness of filter chamber 301 and prevent dust from entering filter chamber 301 and adhering to the output shaft of fan 22 and drive motor 21, causing malfunction at the connection between fan 22 and drive motor 21.

[0028] The suction pipe 34 connects the suction chamber to the external environment, with its suction end located in the external atmosphere and its other end connected to the suction port of the suction box 3. The suction pipe 34 is generally a flexible hose made of rubber or plastic, allowing for easy adjustment of its suction end height. Specifically, the suction pipe 34 has a suction pipe section 341 at its end, connected to its inner cavity. The cross-sectional area of ​​the inner cavity of the suction pipe section 341 gradually increases from the end furthest from the suction pipe 34 to the end closest to it. The larger suction cross-section at the end of the suction pipe section 341 furthest from the suction pipe 34 improves the equipment's suction efficiency. The dust discharge pipe 35 guides the wet dust accumulated at the bottom of the suction chamber to the dust collection hopper 5. Specifically, the dust discharge pipe 35 is a rigid straight pipe structure perpendicular to the horizontal plane, generally made of steel, with its lower end located above the dust collection hopper 5 and spaced vertically from it. The side wall of the chassis body 11 is generally provided with a mounting hole for the dust suction pipe 34 to pass through. The dust suction pipe 34 is generally tightly connected to the mounting hole on the chassis body 11 through a sealing ring.

[0029] The atomizing nozzle 36 is used to spray atomized water into the dust collection chamber. Any commercially available atomizing nozzle can be used; one or more nozzles can be installed. It can be mounted on the side wall or bottom wall of the dust collection box 3. Preferably, multiple atomizing nozzles 36 are located on the bottom wall of the dust collection chamber, and these nozzles are evenly distributed circumferentially along the dust outlet. The axial direction of the atomizing nozzle 36 is perpendicular to the bottom wall of the dust collection chamber, ensuring uniform water mist spraying within the dust collection chamber.

[0030] To prevent excessive humidity inside the suction chamber from causing dust to over-hydrate and form muddy water that flows out, preferably, a humidity sensor 95 is also provided inside the suction chamber to monitor the internal humidity. The humidity sensor 95 is electrically connected to the controller 90. The humidity sensor 95 feeds back the humidity data it monitors to the controller 90 in real time. When the humidity value returned by the humidity sensor 95 is greater than the set humidity value, the controller 90 controls the water pump switch 93 to turn off the water pump 41. The water pump 41 stops supplying water to the atomizing nozzle 36. At this time, because the humidity inside the suction chamber is high, the sucked-in dust will fall quickly and will not fly around. Until the amount of sucked-in dust neutralizes the moisture inside the chamber, when the humidity value returned by the humidity sensor 95 is less than the set humidity value, the controller 90 controls the water pump switch 93 to turn on the water pump 41. The water pump 41 continues to supply water to the atomizing nozzle 36, and the atomizing nozzle 36 continues to spray water into the suction chamber to increase humidity and reduce dust.

[0031] Water tank 4 is used to store water, and water pump 41 is used to supply water to atomizing nozzle 36. Drain pipe 43 on water tank 4 is used to fill the water storage chamber of water tank 4. The inlet of water inlet pipe 42 is positioned higher than the inlet of water tank 4 to facilitate water replenishment. The inlet of water inlet pipe 42 should be upward-facing and equipped with a detachable end cap to prevent dust from falling in. Drain pipe 43 is used to drain water from water tank 4. The outlet of water tank 4 is positioned higher than the outlet of drain pipe 43 to ensure rapid drainage of water from water tank 4. On / off valve 92 on drain pipe 43 controls the connectivity of the internal pipes of drain pipe 43. When the equipment is working, on / off valve 92 closes the internal pipes of drain pipe 43; when the equipment is not in use for a long time, on / off valve 92 is opened to drain water from water tank 4. On / off valve 92 can be a butterfly valve, gate valve, etc. The water tank 4 can be connected separately inside the chassis 1, or it can be connected to the dust collection box 3 or the mounting plate 16.

[0032] The dust collection hopper 5 is used to collect and store the moist dust discharged from the dust collection chamber, and the top of the dust collection hopper 5 is open. Preferably, the inner wall of the housing 1 is provided with a guide rail 61 and a telescopic push rod 62. The length direction of the guide rail 61 and the telescopic push rod 62 are both arranged in the front-back direction. There are two guide rails 61, which are respectively installed on the inner wall of the housing 1. The fixed end of the telescopic push rod 62 is fixedly connected to the housing 1. The dust hopper 5 is provided with a connecting plate 51 connected to the free end of the telescopic push rod 62 and a slider 54 that slides in the front-back direction with the guide rail 61. The front side of the dust hopper 5 is provided with a handle 52 and a limiting plate 53. When the dust hopper 5 is located at the rearmost extreme position inside the housing 1, the limiting plate 51 is located at the front side of the housing 1 and abuts against its side wall, and the free end of the telescopic push rod 62 is located at the rearmost extreme position. It also includes a pop-up switch 96 provided on the housing 1 for controlling the telescopic movement of the telescopic push rod 62. By controlling the pop-out switch 96, the free end of the telescopic push rod 62 extends forward, pushing the connecting plate 51 on the dust hopper 5 forward, thereby pushing the entire dust hopper 5 forward. The dust hopper 5 can then be cleaned. After cleaning, the dust hopper 5 is pushed back and installed inside the housing 1. During this process, the dust hopper 5 is slidably connected to the housing 1 via the guide rail 61 and the slider 54. The telescopic push rod can be a hydraulic, pneumatic, or electric push rod. Considering the driving stability of the telescopic push rod, an electric telescopic cylinder is generally chosen. The pop-out switch is electrically connected to the telescopic push rod 62. The guide rail 61 and the slider 54 cooperate to support the dust hopper 5 and guide it forward and backward. The combined structure can directly use commonly available guide rails, such as the guide rail and slider structure from the HIWIN brand. The guide rail 61 can also be installed on the inner bottom wall of the housing 1, but it is easier to observe when installed on the inner side wall of the housing 1, facilitating the push-pull assembly of the dust hopper 5.

[0033] In the description of this invention, the terms "upper," "lower," "left," "right," "top," "bottom," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the figures are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meanings used above can be understood according to the specific circumstances.

[0034] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A dust falling device for indoor construction, comprising a machine box (1), a driving motor (21) and a fan (22) synchronous with the output shaft of the driving motor (21); the bottom of the machine box (1) is uniformly provided with at least four groups of rollers (10); characterized in that: The machine case (1) is internally provided with a controller (90) and, from top to bottom, a dust suction case (3), a water tank (4) and a dust storage hopper (5), the dust suction case (3) is internally provided with a dust suction cavity, and the fan (22) is located in the dust suction cavity; the water tank (4) is internally provided with a water level sensor (91) and a water pump (41) which are electrically connected with the controller (90); further comprising a water pump switch (93) which is electrically connected with the water pump (41), a motor switch (94) which is electrically connected with the driving motor (21), and an alarm device which is electrically connected with the controller (90); the machine case (1) is provided with a heat dissipation opening at the top; The dust suction case (3) is provided with an exhaust port, a dust suction port and a dust discharge port which are communicated with the dust suction cavity, the exhaust port and the dust suction port are located at the upper portion of the dust suction case (3), the exhaust port is provided with a dust filter net (33), and the dust discharge port is located on the bottom wall of the dust suction case (3); further comprising a dust discharge pipe (35) which is communicated with the dust discharge port and a dust suction pipe (34) which is communicated with the dust suction port, the dust suction end of the dust suction pipe (34) extends out of the machine case (1), and the lower end of the dust discharge pipe (35) extends into the dust storage hopper (5) directly above; the dust suction cavity is provided with an atomizing nozzle (36), and the water inlet of the atomizing nozzle (36) is communicated with the water outlet of the water pump (41); The upper portion of the water tank (4) is provided with a water filling port which is communicated with the water storage cavity, and the water filling port is communicated with a water filling pipe (42); the bottom of the water tank (4) is provided with a water discharge port which is communicated with the water storage cavity, the water discharge port is communicated with a water discharge pipe (43), and the water discharge pipe (43) is provided with an on-off valve (92); the water inlets of the water filling pipe (42) and the water discharge pipe (43) extend out of the machine case (1).

2. The dust lowering device for indoor construction work according to claim 1, characterized by The machine case (1) comprises a machine case body (11) which is open at the front side, the dust suction case (3), the water tank (4) and the dust storage hopper (5) are all detachably installed in the machine case body (11); the machine case body (11) is connected with a maintenance door (12) and an electric control board (13) which is located below the maintenance door (12), one end of the maintenance door (12) is hinged to one side of the machine case body (11) through a first hinge shaft which is arranged in the up-down direction, the other end of the maintenance door (12) is detachably connected with the other side of the machine case body (11); the electric control board (13) is detachably connected with the machine case body (11), the water pump switch (93), the motor switch (94) and the alarm device are all connected on the electric control board (13); The dust storage hopper (5) is located between the electric control board (13) and the bottom wall of the machine case body (11), the front walls of the maintenance door (12), the electric control board (13) and the dust storage hopper (5) are mutually matched to close the front side opening of the machine case body (11); the heat dissipation opening at the top of the machine case (1) is formed at the top of the machine case body (11).

3. The dust lowering device for indoor construction work according to claim 2, characterized by The electric control board (13) is further provided with a display screen (97), and the display screen (97) is electrically connected with the controller (90).

4. The dust lowering device for indoor construction work according to claim 2, characterized by The driving motor (21) is fixedly installed on the outer top wall of the dust suction box (3); the heat dissipation port on the machine box body (11) is provided with an exhaust fan, and the side wall of the machine box body (11) is provided with a ventilation port; The dust suction box (3) comprises an upper box body (31) and a lower box body (32) which are detachably and sealingly connected, and the upper box body (31) and the lower box body (32) enclose the dust suction cavity; the driving motor (21) is installed on the upper box body (31).

5. The dust lowering device for indoor construction work according to claim 4, characterized by A first supporting plate (14) is welded to the inner left side wall of the machine box body (11), a second supporting plate (15) is welded to the inner right side wall of the machine box body (11), the top surfaces of the first supporting plate (14) and the second supporting plate (15) are flush, and the top surfaces of the first supporting plate (14) and the second supporting plate (15) are overlapped with the same mounting plate (16), and the lower box body (32) is installed on the upper side of the mounting plate (16); the mounting plate (16) is provided with an avoiding hole penetrating in the up-down direction, and the dust exhaust pipe (35) penetrates through the avoiding hole; The mounting limiting plate (17) is fixedly connected to the inner rear side wall of the machine box body (11) and abuts against the mounting plate (16) or the lower box body (32) in the front-rear direction.

6. The dust lowering device for indoor construction work according to claim 1, characterized by The bottom wall of the dust suction cavity in the dust suction box (3) is a downwardly inclined surface structure which is inclined from outside to inside along the radial direction of the dust exhaust port.

7. The dust lowering device for indoor construction work according to claim 4, characterized by The dust suction cavity in the dust suction box (3) is further provided with an inner filter screen (37), the outer periphery of the inner filter screen is connected with the inner wall of the upper box body (31) to divide the dust suction cavity into a filtering cavity (301) and a dust falling cavity (302), and the filtering cavity (301) and the dust falling cavity (302) are connected in communication through the mesh holes on the inner filter screen (37); The fan (22) is located in the filtering cavity (301), the atomizing nozzle (36) is located in the dust falling cavity (302), the exhaust port of the dust suction box (3) is connected in communication with the filtering cavity (301), and the dust suction port and the dust exhaust port of the dust suction box (3) are connected in communication with the dust falling cavity (302).

8. The dust lowering device for indoor construction work according to claim 1, characterized by The end of the dust suction pipe (34) is provided with a dust suction pipe section (341) which is connected in communication with the pipe inner cavity of the dust suction pipe (34), the cross-sectional area of the pipe inner cavity of the dust suction pipe section (341) gradually increases from the end far away from the dust suction pipe (34) to the end close to the dust suction pipe (34), and the dust exhaust pipe (35) is a rigid straight pipe structure which is perpendicular to the horizontal plane. The atomizing nozzles (36) are arranged on the bottom wall of the dust suction cavity and are arranged in a plurality of forms, and the plurality of atomizing nozzles are uniformly distributed in the circumferential direction of the dust exhaust port; the axial direction of the atomizing nozzle (36) is perpendicular to the bottom wall of the dust suction cavity.

9. The dust lowering device for indoor construction work according to any one of claims 1 to 8, characterized by The dust suction cavity is further provided with a humidity sensor (95) for monitoring the internal humidity, and the humidity sensor (95) is electrically connected with the controller (90).

10. The dust lowering device for indoor construction work according to claim 9, characterized by The inner side wall of the case (1) is provided with a guide rail (61) and a telescopic push rod (62), the length direction of the guide rail (61) and the telescopic direction of the telescopic push rod (62) are arranged along the front-back direction; the guide rail (61) is provided with two, and the two guide rails (61) are respectively installed on the inner side wall of the case (1); the fixed end of the telescopic push rod (62) is fixedly connected with the case (1); The dust storage hopper (5) is provided with a connecting plate (51) connected with the free end of the telescopic push rod (62) and a sliding block (54) slidingly matched with the guide rail (61) in the front-back direction, the front side of the dust storage hopper (5) is provided with a handle (52) and a limiting plate (53); when the dust storage hopper (5) is located at the rear limit position in the case (1), the limiting plate (51) is located at the front side of the case (1) and abuts against the side wall in front and back, and the free end of the telescopic push rod (62) is located at the rear limit position; Further comprising a pop-up switch (96) provided on the case (1) and used for controlling the telescopic movement of the telescopic push rod (62).

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