Ultrafine plastic mill

Abstract

The present invention relates to the technical field of plastic foam processing, and discloses an ultrafine plastic mill comprising a frame, a first barrel and a second barrel sleeving the first barrel; two grinding sets are arranged in the first barrel with grinding set comprising a first motor and a gear, the gears of the two grinding sets are meshed with each other, the side wall of the first barrel is slidingly connected with two racks, and iron sheets are arranged on the rack; first electromagnets and a plurality of sieve holes are formed in the first barrel; when the first electromagnetsare attracted by the iron sheets to slide upwards, the first electromagnets do not shield the sieve holes; a second motor is arranged below the first barrel; a rotating shaft is arranged between thesecond motor and the first barrel; a discharge hole is formed in the bottom of the first barrel; a feeding plate and a supporting shaft are arranged in the second barrel; the supporting shaft is fixedly connected with the feeding plate and is slidingly connected with a second electromagnet; a spring is arranged on the second electromagnet; and when the second electromagnet is electrified, the second electromagnet is attracted by the iron sheets and the directions of the magnetic poles of the second electromagnet are opposite to the directions of the magnetic poles of the first electromagnets.The ultrafine plastic mill is simple in structure, and capable of performing screening in a grinding process and grinding the plastic master batch into ultrafine powder.

Description

technical field [0001] The invention relates to the technical field of plastic foam processing, in particular to an ultrafine plastic mill. Background technique [0002] Plastic foam, it is a chemical material, the full name of polystyrene foam (Expanded Polystyrene, referred to as EPS). Plastic foam is widely used in the fields of packaging, heat preservation, shock absorption and heat insulation due to its light weight, firmness, shock absorption, low moisture absorption, easy molding, good water resistance, heat insulation and low price. One of the most widely used plastics in the world. [0003] With the rapid development of my country's economy, the demand for plastic foam in industry and people's daily life is increasing, and the processing requirements for plastic processed products are gradually increasing. At present, the industrial processing steps of plastic foam are as follows: after mixing various raw materials according to a certain ratio, plastic masterbatch...

AI Technical Summary

Problems solved by technology

Moreover, the current plastic mills are all one-time grinding, and there are still a lot of particles in the powder. In order to reduce the particles, it is necessary to sieve the material, and the sieved powder that does not meet the standard needs to be ground for the second time.

If the unqualified powder is not sieved out, the second grinding will be carried out, because the unqualified powder will be wrapped with the unqualified powder, and the unqualified powder will not be easily obtained by the second grinding.

However, it takes a lot of time and manpower to sieve the powder, which increases the production cost

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