Energy-saving type plastic extruder

Abstract

The invention discloses an energy-saving type plastic extruder, and relates to the field of plastic processing. The energy-saving type plastic extruder comprises a support, a hopper, a feeding pipe, a speed reducer and a drive motor, and the speed reducer and the drive motor are arranged on the support. The hopper is rotationally connected to the support. The feeding pipe is fixedly connected to the support, and the feeding pipe is located below the hopper. A spiral material pressing shaft with the same rotating center with the hopper is fixed to the bottom of the hopper, and arranged in the feeding pipe, and a spiral feeding groove is formed in the periphery of the spiral material pressing shaft. An annular material port is formed in the joint of the bottom and the side wall of the hopper, and a filter net is arranged at the position of the annular material port. The upper end of the feeding pipe communicates with the annular material port, and a discharging port is formed in the lower end of the feeding pipe. The hopper is a steel hopper, and an electromagnetic heating coil is arranged on the periphery of the hopper. The drive motor is connected with the hopper through the speed reducer. According to the energy-saving type plastic extruder, through rotation of the hopper, plastic particles in the hopper are closely attached to the side wall of the hopper, and accordingly the purpose of sufficiently utilizing energy is achieved.

Description

technical field [0001] The invention relates to the field of plastic processing, in particular to an energy-saving plastic extruder. Background technique [0002] The extruder is an indispensable machine in the plastic product industry in the preparation process of plastic products; the existing plastic extruder mainly does not expand the feeding hopper and the screw feeding pipe, and the feeding hopper is equipped with a heating device. In order to melt the plastic particles loaded into the feeding hopper into molten plastic, the feeding hopper is connected with the screw feeding tube, so the molten plastic can flow into the screw plastic tube, and the screw blade in the screw feeding tube rotates to extrude the molten plastic. [0003] Since the heating device is usually installed on the side wall of the feeding hopper, the heat generated by the heating device is usually concentrated on the edge of the side wall of the feeding hopper, so the heat cannot be evenly transferr...

AI Technical Summary

Problems solved by technology

[0003] Since the heating device is usually installed on the side wall of the feeding hopper, the heat generated by the heating device is usually concentrated on the edge of the side wall of the feeding hopper, so the heat cannot be evenly transferred between the plastic particles, so when the side of the feeding hopper After the plastic particles on the edge of the wall are melted, if the molten plastic does not flow into the screw feeding tube in time, the molten plastic will continue to be heated, and the plastic particles in the middle cannot quickly contact the side wall of the feed hopper, so excessive molten plastic often occurs Heating, and the problem that the plastic particles in the middle cannot be melted quickly makes plastic products easy to form defective products, and the heat energy cannot be fully utilized

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