What is the function of extrusion gear pump?

The melt pump will come from the extruder to pressurize and stabilize the high-temperature melt adhesive, and then deliver it to the extruder head with a stable flow rate. Its ability to stabilize melt pressure and flow rate is better than various models of extruders. In the extrusion system, the melt pump mainly plays three roles: 1. Boosting and stabilizing pressure; 2. Control pressure fluctuations; 3. Reduce energy consumption and increase production. Let's follow the editor to take a closer look.

1、 Pressure increases, pressure stabilizes

When the melt pump is working, when there is resistance between the material at the outlet of the melt pump and the molding mold, the gears inside the melt pump will act like pistons in the cylinder barrel, squeezing the melt in the discharge area to achieve the pressure boosting function of the melt pump. Solved the problem that the pressure generated by the extruder during the production process cannot meet the actual needs of the production process. At the same time, the gears on the pump act as a rotating baffle, effectively separating the pressure fluctuations in the material supply area and the impact of flow fluctuations on the material supply area, thereby stabilizing the material supply area.

micro melt gear pump application case

2、 Control pressure fluctuations

Due to the influence of the screw motion mechanism inside the extruder, the pressure in the melt at the head of the extruder usually exhibits pulse like fluctuations. If a Zhengzhou Bart melt pump is installed at the rear of the machine head, it can continuously and smoothly squeeze the material through continuous meshing between teeth, eliminating pressure fluctuations. Ensuring smooth material flow and reducing fluctuations in melt pressure are crucial for subsequent processes, as they can ensure the stability of product dimensions. The smaller the fluctuation of fusion pressure, the more uniform the thickness of the tube and sheet, which can be more accurately controlled for the size of fiber optic cables.

3、 Reduce energy consumption and improve production efficiency

Melt pumps are usually able to assist in the production of pressure. In this way, the extruder can be fully focused on feeding, melting, mixing and other tasks. When there is no melt pump, a large amount of pressure will be generated at the head of the extruder. After installing the melt pump, the maximum pressure is located behind the pump instead of before, thereby reducing the pressure inside the extruder. Practice has shown that the shear strength of the corresponding melt decreases, the temperature curve flattens, and the temperature rise decreases. Considering the torque of the extruder, this will reduce energy consumption.

BATTE extruder gear pumps optimize the extrusion process, precisely transporting the product stream and efficiently building up die pressure in order to relieve the extruder of the pressure build-up phase.In the plastic processing industry, extruder melt pumps are widely used in the production process of products such as pipes, sheets, films, wires and cables. Whether it is general plastics such as PVC, PE, PP, or special plastics such as engineering plastics and polymer materials, melt solution pumps can play their unique role in providing stable, efficient, and reliable solutions for the plastic processing industry.

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