Dry Fog Dust Suppression System

Main Control Unit

The Main Control Unit serves as the central control core of the dry fog system.

It manages system start and stop operations, monitors water and air pressure in real time, and triggers alarms or automatic shutdown when pressure drops below preset thresholds. The unit can receive remote control signals and process interlock inputs such as material flow or conveyor operation signals to control individual or grouped water-gas distribution devices.

The enclosure is available in powder-coated carbon steel or stainless steel, with stainless steel internal piping. The control system is based on a Siemens PLC platform, ensuring stable and reliable operation.

Constant Pressure Pumping System

The Constant Pressure Pumping System ensures stable water supply under varying operating conditions.

It consists of a water pump, pressure transmitter, buffer tank, and frequency inverter. The system automatically adjusts pump speed based on real-time pressure feedback to maintain a constant outlet pressure.

Even when the number of active spray nozzles changes, the system maintains stable pressure output, ensuring consistent atomization performance. An alarm is triggered if the pressure remains below the set value for an extended period.

Water-Gas Distribution Device

The Water-Gas Distribution Device is responsible for distributing and regulating both water and compressed air.

A single inlet of water and air is divided into multiple outlets (typically 4, 6, or 8 lines), each supplying individual spray nozzles. The unit integrates pressure regulators for both water and air, allowing independent adjustment to optimize atomization performance.

Built-in solenoid valves enable automatic control of each branch line, allowing the system to activate or deactivate specific spray zones based on operating conditions. The housing and internal piping are typically made of stainless steel for durability and corrosion resistance.

Spray Manifold Assembly

The Spray Manifold Assembly forms a continuous spray barrier across the target area.

Multiple nozzles are arranged along a common manifold, enabling simultaneous spraying to create a uniform fog curtain. This configuration effectively captures and suppresses airborne dust, preventing its dispersion into the surrounding environment.

The modular length of the manifold allows adaptation to different installation widths and coverage requirements.

Adjustable Spray Nozzle Mount

The Adjustable Spray Nozzle Mount provides flexible installation and directional control of the spray pattern.

Typically installed above conveyor transfer points or chute inlets, the mount allows operators to adjust the spray angle and position according to site conditions. This ensures optimal coverage of dust generation zones and improves overall dust suppression efficiency.

Main Advantages

● Dry fog dust suppression delivers efficient dust control with minimal resource consumption and no impact on material quality.

● Ultra-low water consumption – significantly reduces water usage compared to conventional spray systems

● No material wetting – micron-sized droplets evaporate quickly, avoiding moisture addition to bulk material

● No secondary pollution – captured dust returns directly to the material stream, eliminating wastewater or sludge handling

● High dust suppression efficiency – fine droplets effectively agglomerate airborne dust at the source Flexible and energy-efficient operation – adapts to varying operating conditions with stable performance and low energy demand