Equipment and method for drying raw materials of injection molded parts

Abstract

The invention discloses a raw material drying equipment and method for injection molded parts, comprising a mixing cylinder, the bottom of the mixing cylinder is connected to a heater and a feeding pipe, the air inlet of the heater is connected to a dryer, and the top of the mixing cylinder is connected to an air extractor through an elbow , the air pump pumps the raw materials to the feeding mechanism. There is a spoiler in the mixing cylinder. The spoiler is distributed on the inner wall of the mixing cylinder in the shape of ring fish scales. The middle part of the spoiler is inclined to the connection between the feeding port and the mixing cylinder; In the implementation of the invention, the dry hot air after drying is used to fully mix, the specific surface area and flow rate of the particles and the drying medium are high, the heating is more uniform, and the drying effect is better; the dry hot air is mixed with the raw materials, and the spoiler generates eddy currents to promote drying. The hot air is fully mixed with the raw materials. After mixing, the gas-solid mixture is fully mixed. The moisture of the solid raw materials is absorbed by the dry hot air with a water content lower than the saturated state. The negative pressure end pumps the gas-solid mixture to the material-using mechanism.

Description

technical field [0001] The invention relates to the field of plastic raw material pretreatment equipment and technology, in particular to a raw material drying equipment and method for injection molded parts. Background technique [0002] Before the plastic injection molding process, the granular raw materials need to be pre-processed, and the most important step is drying. The traditional method uses hot air for drying. The principle is to increase the upper limit of the saturated moisture content of the air after heating the air, so as to absorb the moisture of the raw material particles. [0003] In the patent with the notification number CN205731939U, a biomass particle drying and screening device is disclosed, which includes a screen box (1) arranged at an inclination, and a support frame (2) is fixed at the bottom of the screen box (1). A vibrating motor is connected to the bottom of the box (1), a conveying device is fixed inside the screen box (1), and a discharge h...

AI Technical Summary

Problems solved by technology

In the above solution, after the heating tank is heated by the electric heating component, if it is necessary to achieve the drying purpose in a short time, it is necessary to maintain the high temperature state of the heating tank, which will easily lead to overtemperature damage of the dried object

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