Melt lubrication of Batte melt pump

　　Melt gear metering pump bearings are lubricated by the melt itself , which is passed from the outlet end to the suction side of the pump , and leakage through the bearing designed to achieve. Bearing on the protection of the flow of the polymer is very necessary . This flow requirements of the pump outlet pressure and the inlet pressure is not the same as recommended pressure difference between the two ports should be kept at least a few hundred psi.

　　As the melt gear metering pump bearings lubricated by melt , thus bearing out the need for seals to prevent the polymer flowing outside the gear shaft. In order to adapt to different melt viscosity and pump pressure , most pumps are installed water-cooled seal. This requires a reasonable adjustment to ensure there is enough water to prevent water leaks or to discharge reduced to trace levels. However , water is not too much , as this will reduce the lubricating effect and increase the load melt shaft gear metering pump motor.

　　Melt gear metering pump is started , and the melt temperature should be set to match the temperature or melt temperature . If the pump temperature is considerably higher than the set temperature, or the actual melt temperature , it means that the mechanical part of the pump or thermostat instrument malfunction. Practice has proved that the temperature of the melt gear metering pumps 3-6 ℃ lower than the melt temperature is the most reasonable. Multifunction devices

　　In addition to stable transfer of the accident , the melt metering gear pump also has many other advantages : Compared to the screw extruder , the melt pressure metering gear pump more efficiently improved , thus reducing the pressure in the head of the screw , the screw and the lower melt temperature output increase . Furthermore , the melt metering pump is a gear mixing device can improve the quality of the melt.

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