Oil cleaner of high -efficient non return

The utility model discloses an oil cleaner of high -efficient non return, including the shell, the elastic support frame, filtrate center tube, refill subassembly, refill apron, refill layer board, non return valve block and valve body end cover, the valve body end cover is equipped with oil outlet and oil inlet, is equipped with external seal piece and external seal lid on the valve body end cover, and the non return valve block is the bowl form and covers the oil inlet, and is equipped with the hoop of round thin slice formula on the rim of the elasticity bowl mouth of this non return valve block, and the magnet that the lower part of valve body end cover was equipped with the thin slice formula that corresponds cooperation attraction hoop encircles. The utility model discloses utilize the attraction structure of elasticity bowl mouth structure cooperation hoop with the magnet ring of non return valve block, when the oil inlet that need not can stop up fast the valve body end cover when machine oil is supplied, the non return is efficient, and is effectual, has stopped the work that the phenomenon of oil -break in the twinkling of an eye, protection engine appear in the generator.