Centralized drainage and gas outburst prevention device for rig with rank of 1000 kilometers of coal mine

The utility model provides a centralized drainage and gas outburst prevention device for a rig with a rank of 1000 kilometers of a coal mine. The centralized drainage and gas outburst prevention device for the rig with the rank of 1000 kilometers of the coal mine comprises a collecting tank connected with a drilled hole, a drainage connector used for connecting a gas drainage pipeline is arranged on the upper portion of the collecting tank, and a water dreg discharge connector is arranged on the lower portion of the collecting tank. The collecting tank connected with the drilled hole is adopted to collect water, dregs and gas discharged from the drilled hole, the water, the dregs and the gas entering the collecting tank are discharged in a centralized mode through the water dreg discharge connector, the problem that the water and the dregs flow along a wall when discharged out from the drilled hole, and accumulated water near a drill site is greatly reduced. At the same time, the gas entering the collecting t