Liquid medicine flow monitoring device, liquid medicine supply system and flow monitoring method

The invention provides a liquid medicine flow monitoring device, a liquid medicine supply system and a flow monitoring method, and belongs to the technical field of PCB production, the monitoring device comprises an assembling pipe and a mounting pipe, and the assembling pipe is provided with a connector. The axis of the mounting pipe and the axis of the assembling pipe are parallel and not collinear, a flowmeter is arranged on the mounting pipe, and the two opposite ends of the mounting pipe are communicated with the assembling pipe through connecting pipes. As the axis of the mounting pipe and the axis of the assembling pipe are not collinear, the position of the mounting pipe is lower than that of the assembling pipe in the using process, liquid medicine to be monitored can flow into the mounting pipe under the action of gravity, the mounting pipe is kept in a full liquid state for a long time, and the flow meter on the mounting pipe can accurately measure the flow; and the flow monitoring precision of the