Independent circulating device of electrolytic bath

The utility model discloses an independent circulating device of an electrolytic bath. The independent circulating device comprises a circulating metering pump, a filter, an additive container, an additive metering pump, an electrolyte collecting disc, a control device and a liquid outlet pipe, an inlet of the circulating metering pump is communicated with the electrolyte collecting disc, and the electrolyte collecting disc corresponds to an electrolyte overflow port of an electrolytic cell in position; the circulating metering pump, the filter and the liquid outlet pipe are sequentially communicated along the flowing direction of the electrolyte; a bottom outlet of the additive container is communicated with an inlet of the additive metering pump, and an outlet of the additive metering pump is communicated with the liquid outlet pipe; and the control device is respectively in communication connection with the circulating metering pump, the additive container and the additive metering pump. The device is simp