AUTOMATED SYSTEM FOR DUST SUPPRESSION Russian patent published in 2016 - IPC E21F5/04 

FIELD: technological processes.

SUBSTANCE: invention relates to means of dust suppression and can be used for dust removal, irrigation of loose materials at conveyor transportation in points of transfer of civil and industrial facilities. Automated system of dust suppression, which includes a control unit, a high pressure vessel with moistening fluid, water line control circuit. System further includes a compressor station, compressed air feed line and pneumatic-hydraulic nozzle spraying fluid equipped with system of heating cable installed in dust suppression hopper in beginning of conveyor belt. System also comprises shut-off solenoid valves for switching on/off and control solenoid valves to adjust fluid flow and compressed air to nozzles, controlled through a relay unit control device equipped with a network controller installed in form of a single control unit on conveyor frame in area of visual observation of nozzles for manual control. System is also equipped with linear active infrared sensor, receiving and transmitting device which are installed on both sides above level of conveyor belt before dust suppression hopper for determining presence/absence of transported material on belt, signal is received and processed by control device, which by means of relay unit with signal “Conveyor is empty” switches off shut-off solenoid valves and system of cable heating, and for signals “Conveyor loaded”, “Dusted”, “Defective” turns them on. System is also equipped with stationary meteorological meter and dust meter, installed before and after frame in movement direction of transported material, from which data are transmitted and processed in a computer in control panel, then through a network controller are transmitted to a reception-control device, which by means of relay unit automatically corrects operation of solenoid valves and system of cable heating.

EFFECT: proposed system ensures connection/disconnection of nozzles depending on presence or absence of transported material on conveyor belt, adjustment of flow rates of liquid and compressed air fed to injectors with due allowance for ambient air parameters in automatic and manual modes.

1 cl, 2 dwg