Rainproof device and air-cushion belt conveyor system with rainproof device

The invention discloses a rainproof device for an air-cushion belt conveyor system. The air-cushion belt conveyor system comprises an air tank. The rainproof device comprises a cover body, two extension parts and two bent parts, wherein the cover body is substantially inverted V-shaped and is arranged on the air tank; the two extension parts respectively extend downwards from the left end and the right end of the cover body; the cross sections of the two bent parts are substantially L-shaped, each bent part comprises a first part and a second part, the first parts extend horizontally outwards from the free ends of the corresponding extension parts and are connected with the top part of the air tank, and the second parts are arranged vertical to the first parts, extend downwards, and are isolated from the corresponding outer wall surfaces of the air tank. According to the rainproof device disclosed by the invention, due to arrangement of the extension parts, eddy current cannot be easily generated on the conne