A feeding device for an extruder

Abstract

The invention relates to a feeding device of a plastic extruding machine. The feeding device comprises a feeding barrel, a dehumidifying box and a blanking channel. A feeding port is formed above oneend of the dehumidifying box, the feeding barrel is connected to the feeding port, a discharging port is formed below the other end of the dehumidifying box, and a conveying assembly used for conveying plastic particles to the discharging port from the feeding port is arranged in the dehumidifying box; the blanking channel is formed below the discharging port, and a screening device used for screening the plastic particles is arranged between the discharging port and the blanking channel; and a hot air device for enabling hot air to enter is arranged at one end, at the discharging port, of thedehumidifying box, an air outlet is formed in one end, at the feeding port, of the dehumidifying box, and the air outlet is provided with a drying box. According to the feeding device, by arranging the dehumidifying box, spiral blades stir so that the plastic particles which are piled to be a lump can be broken up, dehumidified and dried in the conveying process of the plastic particles, the plastic particles with the particle diameters being small are screened out through a screen mesh, the raw material quality is improved, and the product quality is promoted.

Description

technical field [0001] The invention relates to the technical field of extruders, in particular to a feeding device of an extruder. Background technique [0002] Extruder is an important plastic machinery, and most of the production of plastic pipes can be realized by extrusion molding. The existing extruder does not have the function of pre-dehumidifying the feed, which will affect the production quality of the pipeline, lead to the production of defective products, and even cause economic losses to the enterprise; more seriously, the production of defective products will delay the production. Orders will affect the reputation of the enterprise; and the raw materials with humidity will shorten the service life of the extruder and damage the extruder after entering the extruder. [0003] For example, the Chinese Utility Model Patent Application No. 201220172551.2 discloses an extruder, including a roller extruder, the outer sleeve of the roller extruder has a square cover, ...

AI Technical Summary

Problems solved by technology

Although the above-mentioned scheme has solved the problems existing in the prior art to a certain extent, there are still unreasonable designs, and it is impossible to pre-dehumidify the feed.

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