Application of frequency inverter in granulator

Introduction to granulator

Granulator includes extrusion granulator and roller extrusion granulator. Its working principle: There are two types of extrusion: front discharge and side discharge. The prepared material is poured from the top of the roller extrusion granulator. There is a vertical screw rod in its groove. Through the rotation of the screw rod, the material is forced to be extruded between the double rollers at the bottom. The double rollers rotate relative to each other, so that the delivered material passes through the rolling knife row to make the particles and some powdered materials enter the rotary vibrating screen for screening.

System requirements

①. Stable operation is required without sudden stop or jamming;

②. It has a compact structure, good stability, low noise, and easy operation and maintenance;

③. It must have anti-blocking function;

④. When starting, the spindle is at a low speed, the instantaneous current of starting is large, and a large torque is required.

Solution advantages

①. Spindle motor frequency conversion power: 160kw/380v (rated current 303A);

②. Deceleration time: 50S; Acceleration time: 50S;

③. Control mode: SVC vector control, connected to touch screen communication;

④. Operating frequency range: 0-50HZ adjustable;

⑤. With stall function.

In order to ensure the quality of mixing, extruding and molding materials during the operation of the granulator, the inverter is required to operate stably. SOWAKAM SW200 inverter (45KW-160KW) has been debugged on site, with obvious starting effect, small starting current impact, stable operation, and multiple protections. So far, the inverter has been operating normally and meets the customer's machine equipment requirements. The customer is very satisfied with it.