Preliminary chemical waste liquid extracting device

The invention relates to a preliminary extraction device for chemical waste liquid, which includes a pipe head, a shell, a transparent observation window, a heater, a support leg, a connecting pipe, an air pump, a pipe cover, a liquid outlet pipe, a storage box, a switch valve, and a three-way pipe , lighting, liquid inlet pipe and refrigerator, the liquid inlet pipe is installed on the upper end of the housing, the lower end of the housing is equipped with support legs, the heater is fixed on the inner bottom surface of the housing, the three-way pipe Set on the right side of the casing, the three-way pipe is connected to the casing through a connecting pipe, an on-off valve is arranged on the three-way pipe, a storage box is installed at the right end of the three-way pipe, and a storage box is installed at the right end of the storage box A liquid outlet pipe, and the illuminating lamp is fixed on the inner top of the housing. The invention can extract substances with different boiling points, and has simple structure and convenient operation.