Equal strength composite lining for stator of single screw pump

The utility model relates to an equal strength composite lining for a stator of a single screw pump, which can be applied to a ground pump and a down-hole pump on an oil field. The composite lining is formed by that the inner hole of a metallic cylinder stator is coated with an adhesive after cleaned and then is injected with a hard rubber attached lining; after the attached lining is cleaned through vulcanizing drawing and is coated with an adhesive, a working elastic body lining is injected. The utility model has the advantages of good service performance, good-quality lining working elastic body saving and low cost; though the design of a mould core is troublesome, manufacture is easy.