Hydraulic Design and Performance Analysis of Circular Arc Gear Pump Based on MATLAB
The traditional gear pump has the advantages of trapped oil and low performance,so in order to design a gear pump with better performance,this uses the concept of external meshing,double arc and oblique flow path to design the arc gear pump,based on MATLAB software to fit the transition line,calculate the number of teeth,tooth width and spiral angle and other important parameters,and through UG software to design several groups of arc gear pumps,the influence of structural parameters on the performance of gear pump is analyzed by numerical simulation finally.The results show that with the change of the number of teeth,spiral angle and other parameters,the boost capacity and flow stability of the circular arc gear pump also change.Especially when the number of teeth is large,the pressure difference between the inlet and outlet is gradually large,the high-speed area in the flow channel is more,the meshing area and the secondary reflux in the oil inlet cavity and the oil discharge cavity is less,and the flow is more stable.With the increase of speed,the stress on the gear pump increases obviously,and the high stress area is mainly concentrated at the junction and meshing of the wheel shaft,and the interface between the driving wheel and the wheel shaft is the place where the equivalent stress is the largest.The performance of circular arc gear pump is optimized through this designs.
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