Axial force analysis of gear in melt metering pump

The gear structure design of the melt metering pump plays a crucial role in the operation of the metering pump. If an ordinary involute helical gear with a pressure angle of 20 degrees is used, the helical gear can increase the meshing overlap of the melt metering pump gear, and can continuously and smoothly squeeze the material during meshing, reducing pressure fluctuations. In addition, helical gears also have a certain self-cleaning effect, which can avoid the deposition and decomposition of materials.

polymer melt pump

The gear of the melt metering pump adopts helical gears, which have great advantages in reducing pressure fluctuations and self-cleaning. However, this type of gear will generate axial force during operation, affecting the service life of the bearings, and also exacerbating the shear degree of the melt in the tooth side gap, reducing the volume of the melt metering pump.

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