The structural principle and application industry of melt discharge pump

The melt discharge pump plays an important role in the plastic industry, as it can accurately transport the plastic melt from the extruder, significantly increasing the efficiency of the production line. As a positive displacement conveying device, the flow rate of the melt discharge pump is strictly proportional to the pump speed. Its heart is composed of pump casing, driving gear, driven gear, sliding bearings, front and rear end plates, packing seals, etc. The tooth profile, pump body, and side cover plate of two gears together constitute the feeding area, conveying area, and discharging area. During work, the molten material is transported by the change in working volume caused by the meshing of the main and driven gears.

The application field of melt discharge pump is very extensive, serving the extrusion molding industry of plastics, resins, rubber products, such as granulation, film, pipes, sheet materials, etc. According to the tooth direction, it can be divided into straight teeth, oblique teeth, herringbone teeth, etc. These different tooth orientations can be applied to different material characteristics and process requirements. For example, straight tooth melt pumps are suitable for materials with high viscosity and high pressure, while helical and herringbone teeth are suitable for materials with low viscosity and low pressure.

In addition to its application in the plastic industry, melt discharge pumps can also be used in other fields. For example, it can be used for the transportation of high viscosity fluids in the chemical fiber industry, as well as for the transportation of various high temperature, high pressure, and high viscosity fluids. In the chemical fiber industry, melt discharge pumps can be used in processes such as spinning, stretching, and winding to provide stable high viscosity fluids for production lines.

In summary, the melt discharge pump is one of the indispensable equipment in the plastic industry, serving the extrusion molding industry of various plastic products with its excellent performance and wide application fields. With the increasing development of the mechanical industry, melt pumps have gradually been adopted and applied by industry professionals in the domestic market, making important contributions to the development of China's plastic industry.

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