Automatic measuring device for formaldehyde content in mining coating and measuring method thereof

The invention aims to provide an automatic measuring device and a detection method for formaldehyde content in mining paint, the automatic measuring device comprises: a first reaction device for placing a sample and a dissolving solution for dissolving the sample to form a sample liquid; the first liquid extraction device is used for extracting a set amount of sample liquid from the first reaction device and conveying the sample liquid into the second reaction device; the second reaction device is hermetically connected with the first liquid pumping device; the second liquid extraction device is used for extracting quantitative reaction liquid from a preset liquid storage device, releasing a preset amount of reaction liquid into the second reaction device, carrying out chemical reaction on the sample liquid, forming to-be-neutralized liquid and generating formaldehyde gas; a third liquid extraction device; a PH detection device, a control device and the like. Compared with the prior art, the operation steps c