The operating pressure of a reactor melt pump is directly related to material properties, equipment parameters, and process conditions.
Key Influencing Factors
Material Properties: Higher material viscosity increases flow resistance, requiring the pump to generate greater pressure. Impurities or particles in the material increase internal friction, also raising operating pressure.
Equipment Parameters: The pump's gear module, tooth width, and rotational speed directly affect pressure output. Larger modules and tooth widths, coupled with higher rotational speeds, enhance pressure-bearing capacity. The pressure rating of the pump body material and seal structure determines the upper limit of operating pressure.
Process and piping conditions: Length, diameter, and number of bends in the discharge piping increase resistance; more complex piping systems require higher pressures. The feed pressure requirements of downstream equipment (e.g., extruders, molds) directly determine the pump's discharge pressure setting. Vacuum levels or feed pressures within reactors also affect the pump's actual working pressure differential.
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