Labyrinth screw pump body is symmetrical structure, one end of the external motor, the pump body is provided with a liquid chamber, fabric chamber ring and labyrinth helical pump chamber, wherein the annular channel directly into the liquid chamber communicating through the fabric chamber ring through The liquid annulus and liquid inlet holes are communicated with the liquid inlet chamber. The threads of the helical rotor and the helical stator in the pump chamber are serrated threads, and can be set in sections. The pump offset the axial force, compact structure, flexible design, the optimization effect is good. Because of the pump chamber with automatic boost and dynamic self-sealing effect, so the application range has been significantly expanded, especially for high lift small flow applications, a variety of infusion pumps and metering pumps. Labyrinth helical pump - double-ended compound toothed labyrinth helical pump is a general engineering equipment technology. The principle of the pump is to rely on the work of the thread toothed type, the current pump tooth type is a single tooth type. The pump tooth can be designed to rectangular, trapezoidal and semi-circular and so on. Research has shown that each tooth type has a unique performance advantage, but each tooth type has a fatal deficiency. The design of the compound tooth type can exert the performance advantages of each tooth type.