TPU Underwater Pelletizing Production Line Melt Pump

In the TPU underwater pelletizing production line, the melt pump serves as a critical core component, undertaking multiple vital functions including melt transportation, pressure boosting and stabilization, precise metering, and efficiency enhancement. It directly determines the operational stability of the production line and the quality of the final product. Its specific roles are analyzed as follows:

I. Efficient Melt Conveyance and Stable Pressure Boosting

Through a high-precision gear meshing mechanism, the melt pump delivers powerful mechanical pressure boosting to the high-temperature, high-viscosity TPU melt. This effectively compensates for pressure losses incurred during pipeline conveyance or mold flow, ensuring the melt overcomes resistance and is delivered stably and continuously to subsequent pelletizing equipment. This provides the fundamental guarantee for continuous production line operation.

II. Precise Pressure Stabilization and Flow Control

Addressing melt pressure fluctuations caused by extruder speed variations and temperature changes, the melt pump enables precise pressure regulation, strictly controlling outlet pressure fluctuations within ±1%. This precision control significantly enhances the dimensional uniformity of pelletized products, effectively preventing defects caused by unstable pressure and ensuring high product quality stability.

III. Precise Metering and Linear Conveyance

The melt conveyance capacity of melt pumps exhibits a strictly linear relationship with their rotational speed. Precise adjustment of rotational speed enables exact control over melt flow rate. This characteristic not only facilitates coordinated operation between upstream and downstream equipment on the production line but also ensures product dimensional accuracy and consistency, providing critical technological support for high-quality TPU pellet production.

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