Research For Double-enveloping Cycloid Internal Gear Pump

Pump is conveying a liquid or liquid mechanical supercharger. It will prime mover of the mechanical energy or other external energy transmitted to the liquid, so that the liquid energy increases. Hydraulic pump is the energy unite of the whole hydraulic system, the performance of the whole hydraulic system is directly determined by the performance of the hydraulic pump.Internal cycloidal gear pump, cycloidal pump for short, is a type of volumetric pump, compared with the external involute gear pump, it has the characteristics of compact structure, less number of part, low noise, low flux pulse, good suction ability and suitability for high rotational speed. By using differential geometry and principle of gear connection, research on related theory and simulation of a new double-enveloping cycloidal pump is carried out in this paper, which has important theoretical meaning and engineering practical value for showing the essence of this gear transmission and improving the performance of the pump.The main contents of this paper include :â‘ The design idea of the double-enveloping cycloidal pump as well as the tooth profile generation theory and the curve function is provided in this paper, and the advantages of the double-enveloping cycloidal pump and the influence on the tooth profile of the inter rotor curvature radius are also discussed, afterwards, further study is carried out on the cropped double-enveloping cycloidal pump.â‘¡the principle of the double-enveloping cycloidal pump and the corresponding structural parameters is investigated in this paper, and the part drawing or assembly drawing of the double-enveloping cycloidal pump are also provided ultimately.â‘¢This paper also introduces the basic theory of fluid mechanics and the CFD software FLUENT, the dynamic mesh theory in the flow field inside of the double-enveloping cycloidal pump is mainly introduced, It involves the relevant basic knowledge of UDF.â‘£after established the channel model and mesh of the double-enveloping cycloidal pump, the simulation of the flow field inside of the double-enveloping cycloidal pump is carried out in the environment of FLUENT.