Circulating multistage filtering electrostatic oil purifier

The utility model discloses a circulating multistage filtering electrostatic oil purifier which comprises an oil inlet, a heater, filters and a vacuum pump, wherein the oil inlet is formed in the top end of a coarse filter; a plurality layers of coarse filtering screens are arranged in the coarse filter; the coarse filter is connected with the heater through an oil conduit; a helical heating pipe is arranged in the heater; an oil conduit penetrating the top end of the heater is connected with an oil filtering chamber; an atomizer is connected with the oil conduit and is arranged at the top end inside the oil filtering chamber; a filler is arranged at the bottom of the oil filtering chamber; an oil supply pump is connected with the bottom of the oil filtering chamber; the oil supply pump is respectively connected with a second filter and an electrostatic chamber through oil conduits; the electrostatic chamber, a high-precision filter and a collecting chamber are respectively connected with one another through oil conduits; a collector is connected with the top end of the coarse filter through an oil conduit; an electromagnetic valve is arranged on an oil conduit between the coarse filter and the collocutor. The circulating multistage filtering electrostatic oil purifier has the advantages of simple structure, high convenience in use, good filtering effect and the like.