Pipeline liquid exhaust device for flow testing

The invention relates to a pipeline liquid exhaust device for flow testing. The pipeline liquid exhaust device comprises a tank body, wherein an inlet screw base, an outlet screw base, a liquidometer mounting base and a liquidometer, as well as a tuning-fork-type material level limiting switch mounting screw base and a tuning-fork-type material level limiting switch which are arranged on the tank body; a filter screen mounting guide groove is formed in the tank body in a welding manner, and a filter screen is inserted into the filter screen mounting guide groove; a clapboard is welded between the filter screen and the inlet screw base which are arranged in the tank body, and the clapboard is welded with the inner wall of the tank body; an electromagnetic valve mounting connector assembly and a manual exhaust valve mounting connector are welded on a top cover; the electromagnetic mounting connector assembly is connected with an electromagnetic valve; a manual cutoff ball valve I is arranged on the manual exhau