Device and method for judging quality of regenerated raw materials through filtering pressure difference

Abstract

The invention relates to a device and method for judging the quality of regenerated raw materials through filtering pressure difference, and belongs to the field of light industry spinning and regenerated polyester filament yarn production. The device comprises a shell, a screw rod, a screw rod sleeve, a heating sleeve, a metering pump, a filter screen inserting plate, a discharging hopper, a discharging pipe and a cooling water pipe. The screw rod is installed in the shell, the screw rod sleeve is installed on the screw rod in a sleeving mode, the heating sleeve is installed on the screw rodsleeve in a sleeving mode, the metering pump is installed on the shell, the filter screen inserting plate is installed on the metering pump, the discharging hopper is connected with the discharging pipe, the discharging pipe is connected with the shell, and the cooling water pipe makes contact with the discharging pipe. The discharging hopper is enlarged, so the discharging is smooth. Due to the fact that some regeneration raw materials are not small pieces of particles, the density is small, and the weight is light, discharging is not smooth. A cooling water pipe is added to protect smooth discharging of a discharging pipe, and due to the fact that the temperature of a discharging opening is too high, abnormal discharging is caused by the fact that raw materials are carbonized on a screw.

Description

technical field [0001] The invention relates to a device and method for judging the quality of regenerated raw materials by filtering pressure difference, belonging to the fields of light industry textile and regenerated polyester filament production. Background technique [0002] The recycled raw materials used in the production of recycled polyester filaments contain many impurities, which have a great impact on the spinnability and product quality of normal spinning, especially for high-end customers of well-known brands exported abroad. They not only pay attention to product quality, but also pay attention to processing. The raw material quality of the product is the same as the quality of the raw fiber of the melt, but the quality of the recycled raw material can only judge the viscosity, melting point, color and other items at present, and the actual recycled raw material often contains some non-PET impurities such as: fine metal, sand, mud, Some substances such as PVC...

AI Technical Summary

Problems solved by technology

[0002] The recycled raw materials used in the production of recycled polyester filaments contain many impurities, which have a great impact on the spinnability and product quality of normal spinning, especially for high-end customers of well-known brands exported abroad. They not only pay attention to product quality, but also pay attention to processing. The raw material quality of the product is the same as the quality of the raw fiber of the melt, but the quality of the recycled raw material can only judge the viscosity, melting point, color and other items at present, and the actual recycled raw material often contains some non-PET impurities such as: fine metal, sand, mud, Some substances such as PVC and low-melt are difficult to judge. If there are many impurities in the raw materials, there will often be filters and component booster blocks during the spinning process, and the pressure fluctuations and pressure differences will be large, resulting in extremely unstable spinning production. A large number of floating yarns, fuzzy yarns, and broken ends are produced. The post-processing stability of the recycled polyester yarns produced is poor, and high-end products cannot be made. The quality cannot be recognized by customers, which has become a bottleneck hindering the development of the industry.

Images