Water-cooling supercharger for explosion-proof diesel engine for mining

The invention discloses a water-cooling supercharger for an explosion-proof diesel engine for mining. The water-cooling supercharger comprises a gas compressor, a middle connecting piece, a turbine and a water cooling jacket, wherein the gas compressor is connected with the turbine and the water cooling jacket through the middle connecting piece. The water-cooling supercharger is characterized inthat the water cooling jacket is arranged outside the turbine in a coating manner, and the water cooling jacket and the turbine are integrally formed through a casting technology; and a first water-cooling channel and a second water-cooling channel are also arranged between the inner wall of the water cooling jacket and the outer wall of the turbine, and are used for performing dual cooling and temperature lowering treatment on the surface of a housing of the turbine. The water-cooling supercharger disclosed by the invention is compact in structural connection; the situation that circulation of cooling water in the tu