What problems can dual drive melt pump solve?

With the requirements of technological progress in petrochemical industry, large displacement and high pressure will become a necessary trend in the development of melt pump. In the downstream of the polymerization unit of petrochemical enterprises, it is generally necessary to configure a set of large granulation unit to make the powdery raw materials formed by polymerization into granular materials. In the granulation device, it is more commonly used to use a large extruder in series with a special melt pump. The extruder completes the melting, plasticization, exhaust and mixing of raw materials with auxiliary materials. The mixed materials are built up and transported into the underwater granulation device by the melt gear pump.

ZB series double shaft driven melt pump can effectively improve the power and stabilize the output. The important thing is to reduce the wear between gears. The double shaft driven melt pump is an extended version of zb-b series, which is mainly used for pressurization and stable flow transportation of extruder or medium and high viscosity polymer. The heating mode is mainly electric heating. Applicable to PS, PP, pet, PVC, PC, PMMA, PA, ABS, PE-LLD and other processes.

With the increase of the geometric displacement and differential pressure of the melt pump, the radial force and torque of the gear shaft of the melt pump will increase, especially for the driven gear shaft of the single drive melt pump, its load is greater than the driving shaft. In production, it is common to see the damage of the driven shaft due to the excessive load of the gear shaft of the melt pump.

The above problems can be better improved by using the double drive melt pump. On the basis of increasing the output of the melt pump, because the teeth of the double drive melt pump are in meshing non-contact state, the gear shaft and bearing are only subjected to the hydraulic pressure from the differential pressure between the inlet and outlet of the melt, and there is no meshing force between the main and driven shafts, At the same time, the input torque required on a single shaft is reduced, which reduces the possibility of fatigue failure of the gear shaft due to excessive load, prolongs the service life of the pump and saves the production cost. In the petrochemical granulation plant with high output and large scale, the use of double drive melt pump shows its advantages. info@battemachinery.com