Feeding system of rectifying tower

The utility model belongs to the technical field of feeding of rectifying towers, and particularly relates to a feeding system of a rectifying tower, which comprises a raw material tank, a pipeline system and a rectifying tower, and the pipeline system comprises a first one-way valve, a first variable frequency pump, a second one-way valve, a third one-way valve, a second variable frequency pump, a fourth one-way valve and a flowmeter. The discharging pipe, the first one-way valve, the first variable frequency pump and the flow meter are sequentially connected through pipelines, and the discharging pipe, the third one-way valve, the second variable frequency pump, the fourth one-way valve and the flow meter are sequentially connected through pipelines. The flow of raw materials in the pipeline is monitored in real time through the flow meter, the rotating speed of the variable frequency pump is controlled by comparing flow data detected by the flow meter with a set value currently required by the rectifying t