Main Structure and Working Principle on Pellet Mill

This machine mainly consists of a feeder, a conditioner and a principal machine of pellet mill (mainly including a main motor, an assembly of rotors, a ring die, press rollers, an assembly of cutting knives, roller adjusting device, a lifting device for the ring die and a lubrication system) (Fig 2.1).



1. Principal machine of the pellet mill
2. Conditioner
3. Feeding auger
4. Driving unit of conditioner
5. Main motor
6. Motor of conditioner
7. Driving unit of feeder
8. Assembly of cutting knife
9. Lubricating system
10. Machine base
11. Rotor
12. Bearing at the rear end
13. Bearing at the front end
14. Inner scraper
15. Ring die
16. Assembly of roller
17. Deflector

The working procedure is shown as follows:

The mixed mash enters the feeding auger from the pelletizing chamber in a proper feeding amount through adjusting the rotating speed of the frequency control motor, and then enters the conditioner. The material will be sufficiently mixed with steam in the conditioner by stirring paddles of the conditioner, and molasses or oil can be added through the feeding inlet for molasses if necessary. The temperature of conditioned compound mash is normally controlled within 65~95℃ and the humidity 14~18% based on different formulas, and finally the material enters the pelletizing chamber and is pelletized to pellets by the press rollers and the ring die.