Diatomite filter with control device

The utility model provides a diatomite filter with a control device. The diatomite filter with the control device comprises a filtering barrel and a circulating barrel, wherein the filtering barrel is connected with the circulating barrel through a pipeline; the filtering barrel is connected with a hydraulic pump, a diatomite adder, a backflushing device and a control cabinet; the filtering barrel comprises a filtering tank main body, a main shaft, and a support arranged at the bottom; the main shaft is arranged at the middle part of the filtering tank main body; a feeding conduit and a ventilating opening are arranged on the two sides of the top of the filtering barrel respectively; a diatomite feeding opening is formed in the side wall at the lower part of the filtering barrel; the diatomite adder is connected with the diatomite feeding opening through a pipeline; a flushing conduit and a residue-discharging opening are arranged on the two sides of the bottom of the filtering barrel respectively. The diatomite filter with the control device is simple in structure and convenient to use, uses diatomite as a medium, adsorbs suspended matters and colloids from filtered liquid by virtue of diatomite microporosity, and ensures clarified filtrate through multiple circulating filtrations.