Fully-automatic continuous film-covering drying production line for plastic foam particles

Abstract

The invention relates to the technical field of machining machinery for foam particles, and particularly relates to a fully-automatic continuous film-covering drying production line for plastic foam particles. The fully-automatic continuous film-covering drying production line for the plastic foam particles comprises a film-covering mechanism, a feeding mechanism, a spraying device and a drying mechanism, wherein the film-covering mechanism comprises a film-covering box body provided with an inner cavity and a stirring device arranged in the film-covering box body; the stirring device comprises a rotary shaft; spiral sheets are axially arranged on the rotary shaft in the axial direction of the rotary shaft; the spiral sheets comprise continuous spiral sheets used for pushing materials anddiscontinuous spiral sheets used for carrying out uniform and comprehensive stirring on a film-covering liquid and the particles to enable the surfaces of the particles to be uniformly wrapped with the film-covering liquid; each discontinuous spiral sheet is composed of a plurality of tooth sheets in a spiral manner and at intervals; the left tooth side of one tooth sheet of each two adjacent tooth sheets and the right tooth side of the other tooth sheet are arranged on a spiral line; and the outer-side tooth side of each tooth sheet is arranged in a manner of approaching to and being tangential with the inner wall of the film-covering box body. According to the fully-automatic continuous film-covering drying production line for the plastic foam particles, nonintermittent and continuous production is realized by pushing materials while stirring; and the fully-automatic continuous film-covering drying production line for the plastic foam particles is high in yield, uniform in coating, rapid in drying, low in energy consumption, and high in automation degree.

Description

technical field [0001] The invention relates to the technical field of foam particle processing machinery, in particular to a fully automatic plastic foam particle continuous coating and drying production line. Background technique [0002] Plastic foam is a kind of chemical material, its full name is expanded polystyrene foam (EPS for short), because of its light weight, firmness, shock absorption, low moisture absorption, easy molding, good water resistance, heat insulation, and low price, etc. , is widely used in packaging, heat preservation, waterproof, heat insulation, shock absorption and other fields, and is one of the most widely used plastics in the world today. [0003] Because EPS has good light weight and good thermal insulation effect, it is now widely used in the building thermal insulation material industry. However, in recent years, due to the non-flammability of building insulation materials in various places, major fires have occurred continuously, causi...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patents, on the one hand, the stirring device in the patent CN 105291301 A, the mixing drum in the patent CN 203637004 U is equipped with a stirring roller and the stirring drying drum is equipped with a spiral stirring device and each set of rotating shafts in the patent CN 203971798 U The stirring plate is evenly distributed in a cross shape on the top. Although all of the above can be stirred evenly so that the coating liquid can be evenly wrapped on the foam particles, but none of the above has the effect of pushing the material and cannot be well placed on the cylinder wall and the rotating shaft. The bonded particles are scraped off and accumulated for a long time, which is prone to "shaft holding" phenomenon, which affects production efficiency and increases maintenance costs

[0006] On the other hand, the spiral stirring device and the air supply device in the patent CN 203637004 U can prevent the adhesion of the flame retardant pellets, and the advancing stirring fin plate can re-stir the pellets, and at the same time send the pellets out of the dryer, although it can reduce the Energy consumption, however, it is only equipped with an air supply device, and no air circulation channel can be formed in the stirring and drying drum, and the drying speed is slow, so the particles wrapped with a layer of inorganic flame retardants are easy to stick and settle. At the bottom of the cylinder, even if the wind power of the air supply device is increased, there will still be subsidence, the productivity is low and the bottom of the cylinder is not easy to clean, time-consuming, laborious, high energy consumption, and low production capacity

What’s more, there are undried granules that are moved forward to the agitation drying sheet and discharged out of the dryer, and there will be adhesion between undried granules, which will affect the processing and production of subsequent granules, and the production quality cannot be guaranteed.

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