Single-screw and twin-screw inside the pressure design
DATE：2016/06/24
Single-screw and twin-screw inside the pressure design
twin-screw
Twin-screw has the advantage, it is relatively easier to produce sinking material success. Adjust the speed in general, Venturi, the template can be successfully produced sinking extruded material is not surprising. Because domestic twin-screw extruder each manufacturer has a large difference in the design direction and philosophy, according to the scene or to be, in many cases still have to open the pressure reducing device, add density control system, vacuum system generally rarely used in the twin-screw extruder. In this regard sinking material can also be a twin screw single screw multiple reference.
Single-screw
1、Extruder cutter device at the use of density control system, can successfully guide the excessive pressure difference, the formation of sinking extruded feed. Because the cutter means to do the packing density of the device production process requirements, resulting in higher equipment prices. With this program must do maintenance work, in case after prolonged use, the packing effect is reduced.
2、Puffing chamber using vacuum system, successfully expanding the pressure inside the boot, forming sinking extruded feed. The relative density of the control system, vacuum sealing system easier to control. With this program must be properly turn on the system, followed by the note material handling Shaq dragon.
3、After adjustment template, as long as the first section (the section of the bypass contact) to add a small amount of oil directly in the feed chamber, it can produce a normal sinking extruded material (refer to a single-screw extruder).
4、All configurations Extruder normal production floating extruded machine is essentially the same, only the cavity can be expanded transposition normal production sinking extruded material, a single screw extruder.
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