The material enters the pressure chamber from the feed star valve, and the material is advanced in the screw conveyor with the animal material, and the material can be sprayed by the steaming hot or peeling process under negative pressure. The star valve realizes control of feeding and discharging, effectively preventing leakage of steam and vacuum leakage; the cylindrical body is advanced by the screw conveyor with animal material; the material stopping time is adjusted by mechanical speed regulation or frequency converter; the steam pressure in the pressure chamber is 3~10Bar; can design vacuum degree in the pressure chamber -0.06~-0.09MPa, realize low temperature blanching; can realize bulk physical peeling method, usually with a thickness of 2~3mm for 30~60 seconds.
