Batch pre-expander NKL-PSJ180

(1) The equipment composition includes: variable diameter expansion body (1800mm-1300mm), aluminum alloy shell drying bed, blade positive pressure feeding system, weighing system, screw feeder, vacuum cooling, etc.

(2) Electrical control system: Mitsubishi PLC from Japan, Schneider touchscreen main control system from France, equipped with Schneider industrial electrical control components.

(3) Steam system: adopts a steam pressure regulating valve and a PID (proportional steam valve) system to control steam pressure and flow, achieving precise heating and controlling expansion density.

(4) Density control: Equipped with high-precision electronic weighing modules and PT650 weighing sensors, achieving precise control of raw material weighing.

Adopting a dual method of Korean vibration sensor level control and time adjustment to achieve EPS expansion level control.

(5) The touchscreen interface simply requires inputting the target density, and the system automatically calculates the weight of the raw material for each cycle.

(6) The main shaft of the expansion chamber adopts a solid DN90mm stainless steel shaft with a coaxiality of 0.025mm, ensuring stable operation.

(7) The mixing rod and clamping joint use DN25 stainless steel tubes. The stainless steel plate of the expansion chamber uses 5mm mirror panel material, effectively solving the volumetric material defects of traditional machines.

(8) The bottom steam plate uses 5mm 304 stainless steel, and the air slot uses laser cutting technology with a width of 0.25mm, ensuring that the steam diffuses evenly when entering the expansion chamber, the foam particles absorb heat evenly, and the particle size is uniform.