Energy-saving and high-efficiency plastic granulator

Abstract

The invention discloses an energy-saving efficient plastic granulator, a feeding screw rod is rotationally arranged in a feed barrel, a scraper plate is rotationally arranged in a granulation extrusion cavity, a scraping block is arranged on the excircle of the scraper plate, the scraping block is closely attached to the inner cylinder wall of an extrusion die cylinder, the cylinder wall of the extrusion die cylinder is provided with extrusion holes, and a rotational cut-off tool is arranged on the outer cylinder wall of the extrusion die cylinder; the energy-saving efficient plastic granulator is characterized in that: the inner cylinder wall of the feed barrel is provided with a plurality of vertical ribs, the vertical ribs pass through, from up to down, the whole feed cylinder height, the top circle of the vertical ribs is matched with the excircle of the feeding screw rod, adjacent vertical ribs, and the inner cylinder wall of the feed barrel and the excircle of the feeding screw rod enclose a space to form an inner air circulation channel of the feed barrel. The energy-saving efficient plastic granulator uses the scraping block to grind a material to produce heat to melt the material for plastic granulation, the energy-saving efficient plastic granulator can always smoothly exhaust in the working process, and the unique scraper plate is designed to avoid local overheating of the material so as to avoid obstruction of heat transfer, so that automatic control of blanking and feeding can be achieved, and the entire normal high-speed granulation process and high granulation quality can be ensured.

Description

technical field [0001] The invention relates to a plastic machine, in particular to an energy-saving and high-efficiency plastic granulator. Background technique [0002] Plastic granulator is a kind of equipment that makes plastic raw materials into plastic particles. At present, the electric heating extrusion method is basically used in the market for plastic granulation, that is, the plastic raw materials are added to the horizontal barrel, and the barrel is heated by high-power electric heating on the surface to melt the plastic raw materials at high temperature, and then a long line in the barrel The long screw feeds the material and extrudes the molten plastic from the die to form thin strips, and then the thin strips are cut into plastic particles by the blade after water cooling. The above-mentioned granulator consumes a lot of energy and has a large volume. In order to overcome the shortcomings of the existing technology, the applicant began to develop a plastic gr...

AI Technical Summary

Problems solved by technology

Because the granulator of the above-mentioned patented technology does not use electric heating, it can save energy by more than 30%. However, the above-mentioned patented products still have many shortcomings in the process of being introduced to the market, which mainly include: 1. Feeding in the feeding screw At the same time, because the material is in the shape of a sheet, there is a large gap in the middle, and there is a large amount of air. In the early stage of feeding, part of the air can be discharged upward, but in the later stage of feeding, the material becomes dense, and the air cannot be discharged upward. It can only be discharged from the extrusion die. The extrusion hole of the extrusion barrel is discharged, while the extrusion hole of the extrusion die barrel is often blocked by the material, especially when the granulator starts to work, the material blocking the extrusion hole is hard, so the air cannot be discharged. Due to the poor exhaust air is blocked in the lower part of the feeding cylinder, it is often difficult or impossible to feed the material, resulting in the granulation cannot be implemented or the speed is very slow, and the air bubbles in the plastic particles make the granulation quality poor; 2. The design of the existing scraper is not perfect enough. The heat generated by the scraper block during the rolling of the material often causes the material to overheat locally and is quickly extruded from the extrusion hole of the extrusion die, while the surrounding materials cannot get the due amount. 3. During the whole granulation process, the blanking and feeding cannot be automatically controlled, and sometimes there are too many blanking and heavy feeding loads, or even blockage or sometimes falling Feed less material, feed load is light, and the whole working process is unstable, which also seriously affects the granulation speed and granulation quality

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