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Dry-mist dust suppression system for conveyor belt chutes
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Belt Conveyor Material Guide Chute Dry-Mist Dust Suppression System
Composition of the dry-mist dust suppression system for belt conveyor chutes:
1 ), Dry Fog Unit: Dry‑mist dust suppression equipment filters air and water, and, under preset air and water pressures, controls the opening and closing of solenoid valves via a programmed sequence to regulate flow rates. The filtered air–water mixture is then conveyed through dedicated pipelines to the dry‑mist nozzle assembly, where it is atomized into a fine mist. The system comprises an electrical control unit, a multifunctional control system, and a flow‑rate control system.
2 ), Automatic Control System: The automatic control system serves as the control center for the belt conveyor chute dry‑mist dust suppression system, integrating a programmable controller, control circuits, protection circuits, a touch screen, and associated electrical components. It provides users with two operating modes: automatic (remote) and manual (local). In automatic mode, the system can automatically receive remote trigger signals to start or stop the dry‑mist dust suppression equipment’s spraying function. In manual mode, operators can press the control buttons to initiate or halt the spraying process. Users can also, through… PLC The interface allows you to adjust the spray cycle and the intervals between pipeline sprays, among other settings.
3 ), Air compressor: The air compressor is used to regulate and stabilize the system’s air supply pressure. It is a screw-type, oil‑lubricated compressor with a cabinet‑type design, featuring high efficiency and energy savings, safe and reliable operation, durability, low noise levels, a compact structure, and simple operation. Equipped with microcomputer control, it also includes self‑diagnostic and protective functions.
4 ), Gas storage tank: The function of the air receiver tank is to regulate and stabilize the system’s air supply pressure. Since the air compressor generates a greater volume of air than the dry‑fog dust suppression equipment requires during normal operation, the tank stores this excess compressed air, thereby balancing and supplying the equipment’s instantaneous air demand.
5 ), Water–Gas Distribution Box: By controlling it, the main water, gas, and electricity lines are connected to the dry-mist chamber. / The connection of the universal joint dry‑mist generator assembly, and according to site conditions, via… PLC Control implementation for each dry-mist chamber / Universal joint dry-mist atomizer assembly spray
6 ), Universal Joint Assembly: It receives air and water supplied by the dry-mist dust suppression system and converts them into particles with a diameter of 5~10 mu m The control commands of the dry‑mist dust suppression system are directed toward the dust‑suppression points. The atomizing nozzles on the mist‑generation unit ensure a uniform mixing of water and air, producing an ultrafine dry mist that is discharged. Each nozzle delivers a specific spray pattern, flow rate, and coverage area; when arranged in a uniform, tightly sealed array, the nozzles form a “mist wall” that comes into contact with airborne dust particles, causing them to collide, adhere to one another, and coalesce into larger aggregates. Under the influence of gravity, these agglomerates then settle, thereby achieving effective dust suppression.
7 ), Backwash Filter: Backwash filters are precision devices that use a filter screen to directly trap impurities in the water, removing suspended solids and particulates, reducing turbidity, and purifying water quality. They also help minimize the formation of system fouling, biofilm, algae, and corrosion, thereby protecting both the treated water and other equipment in the system. Water enters the fully automatic filter housing through the inlet port, driven by intelligent control ( PLC 、 PAC ) The design enables the system to automatically assess the degree of impurity buildup and issue signals to the drain valve for automatic排污. This backwash‑type automatic filter addresses numerous drawbacks of conventional filtration products—such as limited dirt‑holding capacity, susceptibility to clogging, the need to disassemble and clean the filter element, and the inability to monitor filter condition—by providing both raw‑water filtration and automated cleaning and排污 of the filter cartridge. Moreover, during the cleaning and排污 process, the system maintains uninterrupted water supply, achieving a high level of automation.
8 ), Water–gas connection pipeline: The water‑air connection piping comprises pipelines of varying diameters that link the dry‑mist dust suppression equipment, the dry‑mist assembly control cabinet, the air compressor, the compressed‑air storage tank, the water source, and other components, as required, to the dry‑mist assembly control system.
9 ), Electric Heating and Insulation Systems: The electric heat tracing system (self-regulating type) is installed on the dry‑mist dust suppression unit, the dry‑mist nozzle assembly, and the water and air piping. When the ambient temperature falls below… +5 It automatically starts heating at ℃, and when the temperature exceeds +60 Heating automatically stops at ℃. In northern winters ( -30 The dry-mist dust suppression system can operate normally at a temperature of ℃.
Application scope of dry-mist dust suppression systems:
● Dust suppression and cooling for construction sites with high dust levels, such as power plants, port coal terminals, railway freight yards, mines, coal mines, steel mills, and coal‑coking chemical facilities.
● Spray-based dust suppression and water‑spraying dust removal for large coal yards, coal piles, material storage areas, raw material yards, ore stockpiles, and vehicle access roads.
● Waste disposal sites, public spaces, and large-scale disinfection, deodorization, and disease prevention following natural disasters.
● Workshops, processing plants: humidification, cooling, disinfection, and more.
Demonstration of the dry-mist dust suppression performance of the belt conveyor chute:
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