Multi-row continuous quenching device for arc-shaped cutting boards

The invention belongs to the technical field of steel heat treatment, and particularly relates to an arc-shaped cutting board multi-row continuous quenching device which comprises a rack system, a roller way conveying system and a water spraying system. The rack system comprises a fixed rack located on the outermost side of the quenching device and a movable rack connected to the interior of the fixed rack in a lifting mode. The roller way conveying system comprises a plurality of curved surface roller ways which are oppositely arranged on the movable rack and the fixed rack, and a cutting board passage for an arc-shaped cutting board to pass through is formed between the oppositely arranged curved surface roller ways; the water spraying system comprises a plurality of slit nozzles and round hole nozzles which are oppositely arranged on the movable rack and the fixed rack; and the curved surface roller way, the slit nozzle and the circular hole nozzle which are arranged on the movable rack are connected with