Roller extrusion type releasing and separating device and method for ramie

Abstract

The invention relates to a roller extrusion type releasing and separating device and method for ramie. The device comprises a feeding apron and a discharging apron, wherein 5-14 pairs of linearly arranged rollers with grooves are arranged between the feeding apron and the discharging apron, compression springs are arranged on the upper sides of the rollers, the rollers are connected with a transmission device, and spray pipes are arranged above the rollers. The method is characterized by comprising the following specific steps of: laying boiled or biologically degummed ramie bundles on the feeding apron to be fed, holding and extruding the ramie bundles by the upper rollers and the lower rollers under the self weight of the upper rollers and the compression of the compression springs, delivering forward, and effectively removing colloid on the fiber surface through water washing. The invention has the advantages of labor saving, more uniform and sufficient releasing effect, fewer fiber damages and high manufacturing rate; moreover, because the overall ramie bundles make linear movement and the speed between every two rollers is gradually increased during processing, fibers can be conveniently straightened, and the mutual tangling of fibers is greatly reduced.

Description

technical field [0001] The invention relates to a roller extrusion type loosening and separating device and method for ramie, belonging to the field of textile engineering. Background technique [0002] Ramie is a special product of my country, known as "Chinese grass". my country's ramie output accounts for more than 95% of the world's total output. Because ramie fiber fabric has excellent properties such as moisture absorption, heat dissipation, cool and crisp, it is more and more familiar and favored by consumers. Ramie textiles are not only widely used in clothing and packaging, but also developed into many fields such as home decoration and medical use, so the market potential at home and abroad is huge. [0003] In the existing ramie fiber degumming process, chemical or biological degumming is mainly used and supplemented by mechanical attack. The typical chemical degumming process is: raw hemp → pickling → alkali boiling (2 steps) → washing hemp → copying hemp → Ble...

AI Technical Summary

Problems solved by technology

During chemical or biological degumming, most of the colloids in ramie can be directly dissolved in the solution to be removed, but some of the colloids remain on the fibers and make the fibers merge. Therefore, the existing ramie is the After chemical scouring or biological degumming, the ramie is placed on the disc of the hemp machine, and the ramie is hit with a mallet and washed with water at the same time, so that the scorched fibers are further separated from each other under the multiple blows of the mallet. Loosening also makes the glue on the ramie skin be effectively removed under the blow of the mallet and the washing of water. This method of copying also needs to manually turn the ramie beside the copying machine so that it can be repeatedly hit. The effect can be achieved after 5-8 laps

However, during the strike, the mallet cannot guarantee uniform blows on the hemp handle, resulting in insufficient blows on some parts of the hemp handle and a lot of residual colloid, while some parts are hit too much, causing great fiber damage, and repeated blows and water washing will make the The fibers in the hemp handle are disordered and entangled, which brings difficulties to the subsequent processing

In addition, the labor intensity of the operators is high, and the working environment is poor, and the production efficiency is also low

In order to improve working conditions and reduce fiber entanglement during processing, various straight-type hemp machines have been proposed, such as: application of ramie softening machine in ramie degumming process (public number: CN1831215A), straight-line degumming machine (CN86203685U), fiber separation, washing and staining oil combined machine (Patent No.: ZL200720305517.7), a ramie degumming processing and kneading machine (Patent No.: ZL200820068299.4), etc., but they have not been formally applied

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