Rapid cooling device for tunnel kiln

The utility model relates to the technical field of tunnel kilns, in particular to a rapid cooling device for a tunnel kiln, which comprises a preheating zone, a calcining zone fixed at one end of the preheating zone, a cooling zone fixed at one end of the calcining zone, a buffer zone fixed at one side of the cooling zone, and a normal cooling zone fixed at one end of the buffer zone. The top face and the two sides of the normal cooling area are each provided with a plurality of through normal cooling air openings, the surface of one side of the buffering area is provided with a backflow opening, the top and the two sides of the cooling area are each fixedly provided with a high-pressure air inlet, one side of the surface of each high-pressure air inlet is connected with a plurality of air filtering bricks, one side of each air filtering brick is provided with an air inlet, and the other side of each air filtering brick is provided with an air outlet. According to the improved rapid cooling device for the tu