Automatic watering device for underground coal mine belt conveyor

The utility model discloses an automatic watering device for a coal mine underground belt conveyor, which comprises a programmable controller, a dust sensor, an electromagnetic valve and a spraying device, the dust sensor is connected with the programmable controller and transmits signals to the programmable controller, the programmable controller is further connected with a relay of the electromagnetic valve, and the spraying device is connected with the electromagnetic valve. The electromagnetic valve is controlled to be opened and closed through the relay, and the electromagnetic valve is connected with the spraying device. The automatic sprinkling device is combined with the application of the programmable controller, can fully automatically complete the actions of spraying, stopping spraying and the like, does not need manual intervention, can control a plurality of spraying points at the same time, is high in efficiency and low in water consumption, greatly improves the underground environment quality,