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[CN 201821133032.9] Screw extruder constant pressure head


[CN 201821133032.9] Screw Extruder Constant Press Head Title: Screw Extruder Constant Press Head Application Number: CN 201821133032.9 Applicant: Guilin Rubber Design Institute Co., Ltd. Application Date: 2018-7-17 Patent Type: Utility Model The utility model discloses a screw extruder constant press head, including a discharge barrel, one end of which is installed and connected with the discharge end of the screw extruder barrel, the barrel of the discharging barrel is provided with at least one discharge port along the axial direction, and a piston sleeve communicating with the discharging barrel is installed at the other end of the discharging barrel. The piston in the piston sleeve matches the diameter of the discharging barrel. Under the control of the liquid flow pressure stabilizing system, the piston moves axially in the discharging barrel and is at a position balanced with the extrusion pressure in the discharging barrel, the equilibrium position of the piston corresponds to the size of the discharge opening of the piston. The utility model can set the barrel pressure, especially the outlet pressure, according to the mixing requirements of the rubber material, and can automatically maintain the stability of the pressure at the outlet of the extruder, thereby maintaining the consistent performance of the mixed rubber material.

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