Humidification device for external clamping type pipe cutting machine

The invention relates to a humidification device for an external clamping type pipe cutting machine. The humidification device comprises a device body (1), the overall device body (1) is in dual-layer hollowed disc structure design, the diameter of a disc cover device (2) is equal to that of the pipe cutting machine, and a plurality of spraying devices (3) at equal intervals are distributed on the inner side of a cover face; conveying components arranged on the right side of the device body (1) comprise a pump pipe (4), a measurement and control valve (5) and a connector (6); during running, the device body (1) is installed in front of the external clamping type pipe cutting machine through a positioning support (7) and connected with an external water source, and liquid water is conveyed into the disc cover device (2) to conduct timing humidification and cooling operation; and a prompting device (8) is arranged, and different prompts are given according to spraying and conveying states. The humidification de