Separation device used after plastic grain cutting

Abstract

The invention discloses a separation device used after plastic grain cutting, which comprises a filter box, a first storage box, a second storage box and a dust collection box which are sequentially arranged. Air is pumped out through an air compressor at the air suction opening of the dust collection box, so that a mixture subjected to plastic grain cutting is sucked into the dust collection box from the feed inlet of the filter box; in the process that the mixture moves to be close to the dust collection box, sundries are filtered through a filtering screen and then grains and dust can pass through the filtering screen and move to be close to the dust collection box; in the process that the grains and the dust move to be close to the dust collection box, the heavier grains can firstly fall into the first storage box due to action of the self gravity, then the lighter grains can fall into the second storage box and the lightest dust can be adsorbed into the dust collection box so as to be collected by a cloth bag, so that the separation among the grains, the dust and the sundries is completed. The separation device is simple, convenient and rapid.

Description

technical field [0001] The invention relates to a separation device, in particular to a separation device used for granulating plastics. Background technique [0002] After the plastic extruded by the twin-screw extruder is cut into particles, due to the rigidity or toughness of the plastic, it is easy to cause a large amount of plastic dust and the adhesion of the material particles, so the conventional treatment method is in the pelletizer. A vibrating screen is added to the interface to screen the material particles, so that the bonded material particles flow out from one side, and the dust is screened from the bottom. [0003] The vibrating screen is a necessary equipment for large twin-screw plastic extruders, but its main problems are: 1. If there are many sticky particles, it will easily cause blockage, resulting in the inability to feed the plastic inlet, and thus shutting down the machine. Restart the machine after cleaning or use manual cleaning, resulting in a la...

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Problems solved by technology

[0003] The vibrating screen is a necessary equipment for large twin-screw plastic extruders, but its main problems are: 1. If there are many sticky particles, it will easily cause blockage, resulting in the inability to feed the plastic inlet, and thus shutting down the machine. Restart the machine after cleaning or use manual cleaning, resulting in a large number of material particles that cannot be processed and affecting normal production; 2. If there is a lot of particle dust, the dust will stick together, resulting in the dust not being cleaned completely The surface of the granules contains moisture, and the plastic dust is mixed with the granules, which cannot be cleaned up. These plastic dusts will cause the surface of the granules to be smooth and dull, which is not beautiful.

[0004] With the introduction of lightweight plastics, more and more components are filled into plastics, resulting in more and more plastic dust, or higher and higher requirements for the toughness of plastics, resulting in more and more sticky particles. Both seriously affect the production of plastics and the appearance of plastics

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