Daily Troubleshooting Of Twin-screw Extruder

Blocked and unable to discharge material
(1) The particle size of the raw material is too large relative to the size of the die hole (2) Too much material is fed in a short time and the speed is too fast (3) Foreign matter blocks the discharge port (4) The ratio diameter of the pressure ring is too small, and the water supply and steam pressure are too high Small, the temperature adjustment is not enough. Solution: For materials with too large particle size, they need to be crushed to the appropriate particle size; adjust the feeding speed and feeding amount, stop the machine to check and clean foreign matter; replace the mold and readjust the water flow to ensure sufficient water pressure. and vapor pressure.
Poor discharging and forming
Particles vary in diameter and shape

(1) Uneven size of die holes;

(2) The blade is worn and the cutting speed is too fast or too slow;

(3) The temperature is too high or too low during processing;

(4) The raw material formula is inappropriate and the moisture content of the material is too high or too low.

Solution: Configure the appropriate die hole, check the blade wear and replace it in time, adjust the cutting speed, modulator temperature and steam entry amount.

Thin paste
Water supply and steam pressure are too high. Solution: Readjust the water flow to ensure appropriate water pressure and steam pressure. The puffed material powder is reverse-injected too fast or too much, or the discharge is not smooth or blocked. Solution: Control the feeding speed and investigate the reasons for failure to discharge materials one by one.