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Ring die, cotton seeds, alfalfa, butter beans, sardine fish meal making machines spare parts

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period for delivery: Consignment Deadline Days
area: Beijing
Expiry date : Long Effective
last update: 2017-07-07 04:54
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Pellet Machine Ring Die

Pellet dies must resist abrasion, corrosion from chemical exposure and breakage caused by the physical stresses of pellet formation. The optimum die combines high resistance to abrasion, breakage and corrosion with maximum productivity. Our expertise enables us to precisely match the die specification to your required formulation, even if it means customizing a die pattern to meet your exact needs. The wide range of used dies with hole diameters from 2 mm to 12 mm guarantees the production of pellets with a required size.





Ring die pellet mill working principle
The basic structure of the pelletizing chamber is mainly composed of these parts: the die, the rollers, feeding scraper and cutting knives.
When the machine is started, the electric motor will drive the ring die to rotate. And the rollers will also revolve on its own axis due to the friction between itself and the die. By means of gravity and the centrifugal force generated by rotating of the ring die, material will be firmly attached to inner surface of the ring die. The feeding scraper will ensure the material to be continuously and evenly pushed forward along the die to be prepared for pelletizing.
Then the material is squeezed by the roller and the die, and with the gradually increasing pressure, the density of the material also becomes higher. Thus the material temperature will rise, which softens the lignin in it and makes it easier to be shaped. At this time, the material is compressed into the die holes and shaped into small cylindrical strips with diameters of 2 - 12 mm (depending on the size of the holes).




Relation between die hole structure and pelleting
1,Straight hole and release stepped hole
It is suitable for compound feed processing
2,External conical hole
It is suitable for the processing of high-fibre feed like de-fat chaff
3,Internal conical hole and compression-type stepped hole
This applicable for the process of herbage powder feed of light proportion
 
We should try to avoid using release stepped hole(pressure-relief vent)
Because discharing is not easy for holes in the rows of the edge of ring die, pressure-relief vent is designed there.
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