Well wellhole automatic drainage controlling means is faced upward to colliery main shaft

The utility model relates to a colliery is the drainage technology field in the pit, discloses a well wellhole automatic drainage controlling means is faced upward to colliery main shaft, and it includes the body, is hollow circular cylinder shape, floats in the surface of water for survey the height of water level, foraminiferous protection casing is the upper end open bottom end confined hollowcircular cylinder shape cover body, evenly on the lateral wall of foraminiferous protection casing is equipped with a plurality of through -holes, cover internal portion through the water intercommunication in through -hole and the sump, and the movable setting of body is inside foraminiferous protection casing to freely slide from top to bottom along foraminiferous protection casing, the gauge stick, the bottom of gauge stick and the upper portion fixed connection of body, the welding has long square slide block on the gauge stick, and long square slide block is mutually perpendicular with the axis of gauge stick, an