Plastic melt pump is a widely used equipment in plastic processing industry, mainly used for high temperature and high viscosity polymer melt conveying, pressurizing and metering. The following is a detailed analysis of the plastic melt pump:

Plastic melt pumps are usually in the form of gear pumps, which are composed of active gears and driven gears. As the gears rotate, they create a variable volume in the pump body, which draws in and discharges the melt. Specifically, when the gears rotate in the specified direction, the melt enters the grooves of the two gears in the feed area, and as the gears rotate, the melt is brought into the delivery area from both sides, and the gears mesh again so that the melt in the grooves is extruded out of the discharge area and pressurized to the outlet pipe. This principle of operation enables the melt pump to achieve a stable flow rate and pressure output.

Areas of application

Plastic melt pumps have a wide range of applications in the plastics processing industry, mainly including:

Extrusion molding: such as pipe, plate, film and other extrusion molding process, the melt pump can ensure stable melt delivery, improve product quality and production efficiency.

Pelletizing: In the process of pelletizing, melt pumps can enhance the consistency of pellets, reduce energy consumption and scrap rate.

Chemical fiber spinning: In the process of chemical fiber spinning, the melt pump can stabilize the melt delivery and improve the fiber strength and quality.

Multi-layer co-extrusion: In the process of multi-layer co-extrusion, the melt pump can coordinate the layering of different materials and enhance the performance of composite products.

Selection and Maintenance

Selection: In the selection of plastic melt pumps, you need to consider the viscosity of the melt, temperature, pressure and other parameters, as well as the specific needs of the production line. At the same time, you also need to pay attention to the melt pump specifications and models, flow range, outlet pressure and other technical parameters.

Maintenance: In order to ensure the normal operation and prolong the service life of plastic melt pumps, regular maintenance is required.

This includes checking the wear and tear of seals and bearings, cleaning inlet and outlet pipes and filters, checking whether the transmission system is normal and lubricating bearings and gears.

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