Expansion machinery is the use of mechanical energy to thermal energy to provide kinetic energy, usually by using the expansion of mechanical unequal pitch non-standard spiral system of extrusion propulsion, the material in the gas is discharged, and quickly filled with materials, materials by the action of the shear force and the reflux, so that the pressure inside the chamber increases, and then at the same time the mechanical energy through the friction of the material in the chamber and converted into heat, so that the material to become a flow of the nature of the gelatinised State, the material is extruded to the exit pressure from high pressure instantly to normal pressure, from high temperature instantly to normal temperature, resulting in rapid evaporation of water from the organisational structure, with the stack spinning and the friction between the chamber so that the material is fully mixed, extrusion, heating, gluing, pasting and organisational changes, the original structure is damaged, so that the internal formation of countless micro-porous structure, and then through the cutting device, cutting and cooling of puffed food that is then through the cutting device, cutting and cooling that puffed food is shaped.

Wheat husk, cornmeal, soybean cypress, fish meal, etc., plus compound premix, add 10-17 city pounds of water per 100 city pounds according to the formula, put into the mixer and mix well, about 3-5 minutes, turn on the mixer churn, pump the material into the storage barrel, pumped into the mouth of the puffing machine by the storage barrel churn.
Cut grain part: cut grain size by the discharge hole, to puffing general 4.5cm, hole open 4-5. To high yield, not puffed can open 10-15 holes, small motor can be adjusted back and forth, the knife should be smooth, the next material should be used first 3-5 city kg of feed with more water to do the beginning.

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