Liquid sampler

The utility model discloses a liquid sampler. Sampling box, an open source single chip microcomputer is mounted on the side surface of the sampling box; a cleaning device is mounted on the inner sideof the sampling box; a blowdown device and a telescopic mechanism are respectively mounted at the bottom of the sampling box; a suction nozzle is mounted at the end part of the telescopic mechanism; the suction nozzle is communicated with the interior of the sampling box through a sampling pipe; the sampling pipe is a threaded telescopic pipe; a self-priming pump is mounted at the joint of the sampling pipe and the sampling box; the self-priming pump is positioned on the inner side of the sampling box; liquid sampler, the inner wall of the sampling box is cleaned through the cleaning device; the liquid sampler is convenient to clean, time-saving and labor-saving, dirt in the sampling box is discharged through the dirt discharging device, sampling work of the next time is facilitated, the liquid sampler has meterin