Today BATTE melt pump manufacturers to introduce you to the working temperature and pressure of the melt pump.
The working temperature of melt pumps can generally reach 300 degrees, which can meet the requirements of conveying most of the plastic melt, some high-temperature melt pumps can reach 500 degrees. The working pressure of the melt pump is usually expressed in three parameters, namely, a larger inlet pressure, a larger outlet pressure and a larger differential pressure. Ordinary melt pumps have a larger inlet pressure of 10~12MPa, a larger outlet pressure of 35MPa, and a larger differential pressure of 25MPa. This series of high-pressure melt pumps have a larger inlet pressure of 20MPa, a larger outlet pressure of 70MPa, and a larger differential pressure of 50MPa.
melt pump for plastic extrusion
Melt pumps do not require a large inlet pressure, generally 3-5MPa. require a greater inlet pressure of high viscosity fluids. In order to strengthen the extrusion screw melt material mixing effect, sometimes need a higher screw head pressure to increase the reflux, this time can be adjusted to higher feed pressure. By adjusting the upstream equipment (such as extruder) and melt pump flow matching, you can easily get the inlet pressure of high and low. The higher differential pressure reflects the melt pump pressure formation capability. The sum of the inlet pressure and differential pressure is the outlet pressure. The size of the outlet pressure depends on the shape of the mouth mold, the viscosity of the melt material, the flow rate and so on. Users can choose the working temperature of the melt pump. In the working pressure, to meet the requirements of the use of prevail, do not have to choose too high grade. Since the melt pump can work normally under high temperature and high pressure, it must rely on the special material, structure and corresponding power supply device to support the melt pump. Melt pumps with high temperature and pressure resistance ratings have higher costs.
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