Coal cutting loader dust prevention control - has pressure control valves regulating water nozzle output depending on loader speed

摘要

The dust prevention control of a coal cutter-loader includes output regulation of water to spray nozzles, depending on a loader speed and air suction intake. The hand controlled nozzles are connected to a drag hose and supplied by a pump whose output is dependent on the rotary speed of a suction impeller. A hydrostatic drive may be included for the suction impeller, in which an adjustable pump in the coil circulation cycle is associated with a motor depending on the liquid level in the circuit this pump may be coupled to the suction impeller by means of a belt drive. the spray nozzles may be arranged in several groups and are finally controlled by an automatic activated set of delivery valves.