Duplex filtering device of alternating current lubricating oil pump

The invention relates to the field of duplex filters, in particular to a duplex filter device of an alternating-current lubricating oil pump, which comprises a duplex filter body, a mounting plate is fixedly mounted in the duplex filter body, a filter element for filtering is mounted in the duplex filter body, and the mounting plate is fixedly mounted in the duplex filter body. An extrusion plate is fixedly mounted in the middle of the filter element and mounted on the upper surface of the mounting plate; according to the duplex filter device of the alternating-current lubricating oil pump, when the filter element needs to be replaced, a top cover of the duplex filter body is taken down, the filter element is driven to ascend through the operation of the jacking mechanism, at the moment, the oil scraping device pushes materials on the outer side of the filter element, and the materials on the outer side of the filter element are pushed by the oil scraping device; material residues on the outer side of the fil