A polyamide granulation system

Abstract

The invention discloses a polyamide granulation system, which sequentially includes a granulation mechanism, a granulation conveying mechanism and a granulation classification and discharge mechanism from front to back according to the technological process. The granulation mechanism includes a distributor and a transmission device. The granulation conveying mechanism includes a conveying device, which conveys the particles flowing out of the granulating cylinder. Several automatic spraying devices are also arranged on one side of the conveying device. A waste gas collection device is also provided above the conveying device, and the waste gas collection device includes a draft device and a ventilation duct. The granulation and classification discharge mechanism includes a scraper, a sieve, a feeding funnel, a blower, a separation device, a second discharge pipe, a floc collection device and a second multi-way pipe. The invention can improve the installation flexibility of the motor, reduce the impurity content of the granulated product, have the advantages of automatic classification, timely cooling, timely discharge of organic waste gas, and ensure the normal operation of the flat plate.

Description

technical field [0001] The invention relates to the field of polyamide preparation, in particular to a polyamide granulation system. Background technique [0002] Polyamide resin, referred to as PA, is a polymer with amide bonds in the main chain. It can be obtained by polycondensation of dibasic amine and dibasic acid, and ring-opening polymerization of lactam. A variety of polyamide resins can be obtained due to the different types of dibasic acids and diamines used. According to the relative molecular weight, it can be roughly divided into high molecular polyamide resin and low molecular polyamide resin. [0003] High-molecular polyamide resin, known as nylon or nylon, is composed of straight-chain aliphatic dibasic acid and diamine. It is mainly used to prepare synthetic fibers and engineering plastics. It is a kind of polyamide resin with relatively complete development and research technology. . [0004] Low-molecular-weight polyamide resin is obtained by polyconde...

AI Technical Summary

Problems solved by technology

This granulation method needs to fix a motor position on the granulator, and the flexibility of equipment installation is poor

[0010] Second, the particles of polyamide granulated by the granulator are directly fed, but at this time the particles have not cooled down and some organic waste gas is still volatilized, and such organic waste gas is not easy to collect and discharge

In addition, the cloth board will wrinkle after working for a long time, which seriously affects the conveying efficiency

[0011] Third, when the polyamide is fed after granulation, some lighter flocs will be produced during the granulation process, and the direct feeding will be brought into the feeding device, which will cause trouble for subsequent cleaning

Moreover, the granulation and classification discharge process of the traditional process is mostly manually screened, and the screening efficiency is low.

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