The utility model relates to a rotary blade type mechanical pump belongs to machinery, rotary blade type mechanical pump mainly include casing, stator, rotor, vortex sheet, spring, receive oil pocket, exhaust hole, induction port, filtration valve, air inlet, gas -liquid strainer valve, add the oil plug, go out oil pipe, connector, send oil pipe, sealing washer, joint spare, the utility model discloses can constantly breathe in, compress, exhaust, reach the mesh of bleeding in succession to eccentric quality is less, maintains that simple and convenient, work efficiency also obtains effectual improvement, can filter the you heshui among the real empty room, the tiny grains of sand and dust impurity in can filtered air, extension rotary blade type mechanical pump's life, arrange oil pipe way simple structure, an oil pipe of being convenient for, connector, the dismantlement of sending oil pipe and washing, labor efficiency is effectively improved to still have small, light in weight, the noise is low, vibrates little characteristics.