| abstract |
A screw extrusion device with an exhaust function belongs to the technical field of plastic extrusion devices. Comprises a machine barrel and a feeding barrel; a screw and a screw drive mechanism; a group of heating rings arranged outside the machine barrel; the screw temperature zone temperature adjusting and controlling mechanism is fixed with the heat insulation ring; the hopper is arranged corresponding to the position of the feeding cylinder; the method is characterized in that: the hopper is fixed with the water cooling mechanism at the position corresponding to the feeding cylinder and is communicated with the cavity of the feeding cylinder; the air outlet is formed in the middle of one side, facing upwards in the length direction, of the machine barrel and corresponds to an air outlet cavity between two adjacent heating rings in the middle of the group of heating rings, the area, corresponding to the middle of the machine barrel cavity, between the two adjacent heating rings is formed into an air outlet area, and the diameter of the part, corresponding to the air outlet area, of the screw is smaller than the diameter of the other parts, located in the machine barrel cavity, of the screw. The quality and the strength of the plastic product are guaranteed; the smooth and easy effect of feeding is ensured. |