Salt spray collecting device of laboratory salt spray corrosion test box

The utility model relates to a salt mist collecting device of a salt mist corrosion test box in a laboratory, and belongs to the technical field of metallurgical environmental protection equipment. Comprising a cylinder body (1), a salt mist air inlet connecting pipe (10) and a waste liquid discharging connecting pipe (7) are arranged on the side wall of the cylinder body (1), a refrigeration sheet (2) is arranged on the upper portion in the cylinder body (1), and a spraying device (3) is arranged below the refrigeration sheet (2); a waste liquid inlet connecting pipe (8) is arranged at the lower part of the cylinder body (1); an air pressure balance port (4) is formed in the middle upper part of the cylinder body (1); and the controller (9) is electrically connected with a control switch of the refrigeration sheet (2) and a control switch of the spraying device (3). The device is connected with a salt spray discharge port of the salt spray corrosion test box. And the controller (9) starts to work after detec