Mechanical degummed ramie softening method and device for phloem fiber

Abstract

The invention relates to a mechanical degummed ramie softening method and a device for phloem fiber. The method comprises the following steps: (1) installing a machine frame, and installing more than two groups of work units and support plates on the machine frame, wherein each work unit comprises a frequency change motor, a plurality of pairs of rollers, a pressurizing device, a high-pressure oil spray pipe, an oil and impurity separation device and an oil agent recovery device; (2) spreading and feeding degummed ramie, regulating the parameters of the frequency motors, and carrying out milling treatment on the degummed ramie by each roller; (3) opening each oil spray nozzle, exerting the pressure by the pressurizing devices and the self weight of each roller at the upper part, and carrying out treatment on the degummed ramie through the speed difference of the repeated and positive and negative rotation of each roller; (4) uniformly spraying the oil agent onto the degummed ramie by each oil spray nozzle; and (5) absorbing a part of the oil agent by the degummed ramie at the same time of the oil agent spraying, and making the other part of the oil agent with impurities flow into the oil and impurity separation device. The invention adopts the pressure exerted by the self weight of the rollers at the upper part and the pressurizing devices and the speed difference of the repeated and positive and negative rotation of each roller for extruding and kneading the degummed ramie, so the invention has good fiber dividing and impurity removal effects and uniform and effective oiling effects, and realizes good softening effect. The invention can be widely used in the mechanical softening treatment of various kinds of phloem fiber.

Description

technical field [0001] The invention relates to a softening method and equipment, in particular to a mechanical softening method and device for mechanically softening bast fibers obtained after degumming and removing impurities. Background technique [0002] In the processing of bast fibers, especially hemp, the bundles of fibers such as degummed hemp obtained by degumming are brittle and rough due to merging, and are not suitable for carding and spinning directly. They need to be processed in sequence as follows: Dry hemp—mechanical soft hemp (refueling wetness)—health preservation. Because, after the degumming process of the hemp, although most of the dissolved colloids have been removed, there are still some residues on the bast fiber, especially the semi-degummed hemp, the water evaporates rapidly in the drying process, It causes the remaining residual glue to re-form into a harder state, making it hard and rough after drying. Due to the concentration of the residual c...

AI Technical Summary

Problems solved by technology

Its disadvantages are mainly reflected in the following aspects: (1) When softening the hemp, the softening sesame oil can only be sprayed on the upper surface of the hemp, and the lower surface cannot get soft sesame oil, resulting in uneven oiling

(2) There is no soft sesame oil recovery device and dust separation device, which causes waste and increases costs

(3) The spring pressure adjustment of the softening device depends on manual adjustment, and the adjustment accuracy mainly depends on the working attitude and proficiency of the operator, so it is easy to cause human operation errors and it is difficult to guarantee product quality

In order to solve the problem of uneven oiling and waste of oil, someone invented a Chinese patent No. CN2443013Y with an oil tank and a rolling machine for softening the hemp machine. The rolling car controls the oil content, but no matter how high the pressure is, the oil content after rolling will be greater than 100%, especially when the thickness of the hemp is uneven, the oil content will be higher

This structure seems to solve the problem of oil content, but it still fails to completely solve the above problems, and because of the lack of oil and impurities separation device, the impurities fall into the oil tank and stick to the hemp at the back, which affects the quality of subsequent products. However, the above softening machines have not been widely applied due to their own problems and the inability of processed products to meet the quality requirements.

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