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Snack Puffing Machine

Katherine / 26 Jul,2016
snack puffing machine
Snack puffing machine is a kind of puffed food processing equipment, such as processing daily life of rice, corn, soybeans and wheat. Heat is the main working principle is the mechanical energy into heat, rotating machines produced when food extrusion cooked, puffed food after most obvious feature is the larger size.
Classification:
1.Grain puffing machine: mainly used for expanded corn, yellow rice and other cereal grains.
2. Flour puffing machine: it is mainly used puffed wheat white flour, this extruder has called crisp fruit machine.
3. Soybean puffing machine: Its main use is extruded soybeans, and grain extruder is different, Soybean Extruder to contain oil installations, based on the high oil content of soybeans produced by a special machine.
Cereal puffing machine is based on the principle of differential pressure puffing made. Before each production requires the nozzle portion was heated to 150 ℃ and then started (after the operation start is not necessary to re-heat). In the machine feed chamber is squeezed, friction sufficient thermal energy required for its expanded, the maintaining of the temperature of the cavity 150 ~ 180 ℃), the work should be the first 30% moisture content was added 1 kg of starting material Explode, followed Join normal raw materials for production. Raw materials from the inlet chamber into the machine, forcing propelled by auger. Since the thread grooves of the screw and barrel is faded from deep, so the pressure will become larger, and while stirring, mixing, friction and shear to form a raw starch. Since the raw starch in the machine chamber is gradually warmed, so the starch paste, namely "α" of. (At this time the pressure increased to 10 kg / cm 2 or more), then a predetermined nozzle to suddenly depressurized to atmospheric pressure, so that free water within the sudden vaporization of tissue, expanded, formed like a hollow sponge, mesh structure. While the rapid cooling and hardening, semi-finished products made of puffed food.
The working principle of Air-flow Snack Puffing Machine: A certain amount of material put into the lid sealed steel tank body, the use of liquefied petroleum gas, coal gas or heating, and to a certain constant rotation speed of the tank, so that the material evenly heated, with the heating tank the temperature gradually increased, reaching more than 100 ℃, the surface material will escape the body of water and vaporized a certain pressure in the tank. When the material was charged with a moisture of about 5% to 8%, the pressure inside the tank will reach 0.8 ~ 1.25Mpa (different materials different pressure). At this time the material has been basically matured in the tank if the tank lid burst open by the sudden release of high temperature and pressure state down to room temperature and pressure, the material will be filled by the loss of the position of the air becomes larger, its structure changes, raw starch (β- starch) matured starch (α- starch), volume enlarged several times to ten times. That moment of instantaneous release bulging from the extruder outlet stream and the material and at the same time dramatically tearing the air, producing a loud noise, the sound of around 100 decibels.