Feed expander

• Main Authors: FU DIANLIANG, MENG WEIGUANG
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2011
• Subjects: APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS; FOODS OR FOODSTUFFS; HUMAN NECESSITIES; MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLESOR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES

The utility mode relates to a feed expander which comprises a machine body and a hopper, wherein the machine body and the hopper are installed on a fixed seat, and an outer spiral sleeve, an inner spiral rod and a central rotating shaft butted with the inner spiral rod are arranged in the machine body; a shaft head casing is connected to the outer end of the outer spiral sleeve, an inner thread groove is formed in the shaft head casing, and a grinding piece and a discharge tray are arranged between the output end of the inner spiral rod and a discharge opening of the shaft head casing respectively; and an outer thread groove is formed on the circumference of the inner spiral rod, an axial damping rib is arranged between two to five circles of threads at the front end of the inner spiral rod and level with the outer edges of the threads respectively, a push head with a smooth end surface is arranged at the output end of the inner spiral rod, and a transition groove is formed between the push head and the threa