Abstract: The paper gives a main introduction about the stament of the device concerning dustproof and waterspringkle in our current main shaft hoist skip unloading point,as well as the imperfections of existing unloading point dustproof instruments. According to the conveying characteristics of mine coal flow system as well as ultrasonic sensor ,Tthis passag unfolds a design of an automatic dustproof and waterspringkle device on the basis of ultrasonic sensor detecting skip unloading point. As a result, this device has been proved to be sutable for practical use in mine dust control system.

Key words: Hoist skip unloading device of intelligentUltrasonic, Dust sprinkler, The principle of ultrasonic ranging