Twin screw extruder has the following part: feeding system, extrusion system, cutting system, heating system, lubricating system, driving system, control system.
Feeding system of twin screw food extruder
Installed on the gear box of extruder and fed by the spiral, the speed can be adjusted. This system is composed by the screw, storage, stir fin and driving system. The role of stirring fin avoids without the materials in the storage thus block the feeding.
Extrusion system
The main parts of twin screw extrusion system is screws and knots.
Two screws revolve left , inter mesh and run in the same direction.
In the course of working, screws scrape the sticky materials each other and push forward. screws are composed of seven parts, the materials in the process pushing, on the one hand, it increases the extrusion capacity for materials and make the materials increase the contact area with the barrel and easy to absorb the heat outside, meanwhile it is conducive to the cooking of materials; On the other hand, when the materials put through the last paragraph of screws, it can get the role of cutting force, increases energy, and achieve extrusion. Screws are connected by the couplings and constitute a whole concentric screws. Connection is with good interchangeability, easy to be Assembled and Disassembled.
Cutting system of double screw extruder
Cutting device is composed of motor, knief shelf, belt pulley. The knife shelf is fixed on the model and belt drives the knief shelf to revolve thus cut down the products. The dies have the following shapes: ball, flower, columniation, flake and so on.
Lubricating system for double screw food extruder
Lubricating system is composed of gear pump, oil tank and oil route. Motor drives the gear pump to lubricate and cool all the parts of gear box. Oil pump is installed with the filter.
Driving system of extruder food machinery
Driving starts from main motor and put through belt pulley and gear box. it is devided to two same direction output shafts. Gear Z24 and Z50 mesh each other and belong to triangle driving system. Two matching Z24 gears carry the torque and radial force coming from the screws
Heating system of extrusion snacks machine
Heating system is divided three working areas from the barrel, the barrel outside is heated by the pressure changing areas so that he can control the status of the materials.
Controlling system of chips making machine
The machines are controlled centrally, including mixer, screw conveyor, conditioner, feeder, oil pump, cutting, screws, heating and elevator and so on. It is equipped with the automatic protect device and indication instrument
