Quantitative humidifying device for acetate fiber ribbon before curling and humidifying process thereof

Abstract

The invention provides a quantitative humidifying device for an acetate fiber ribbon before curling and a humidifying process of the quantitative humidifying device. A Venturi spray gun is arranged on the lower side or the upper and lower sides of the ribbon. The area of the aperture at the thinnest part of the atomizing spray nozzle of the Venturi spray gun is 0.1-0.5mm<2>. A gas inlet is communicated with a compressed gas device and the like. A liquid inlet is communicated with a liquid source, a humidification amount controller, a liquid heating device and the like. The vertical distance from the atomizing spray nozzle to the ribbon is 10-30cm. The spray angle is 120-150 degrees. The gauge pressure of compressed gas is 0.05-0.18Mpa. Preferably, deionized water, deionized water emulsion containing emulsified oil, or deionized water solution containing solute is selected as liquid. The humidification amount of the acetate fiber ribbon can be accurately metered and automatically controlled; and the quantitative humidifying device provided by the invention has the advantages that the curling capacity of acetate fiber tows can be improved, the damage to the ribbon in the curling process is reduced and the device is easy to mount and dismount in a tow travel route.

Description

technical field [0001] The invention relates to a humidification treatment device used before tow (or ribbon) in an acetate fiber production line and its treatment process. Background technique [0002] The spinning and forming process of acetate fiber usually includes processes such as vinegar sheet production, pulping, filtering, spinning, feeding, oiling, crimping, and drying. After oiling, the tow directly enters the crimping machine for crimping, the crimping energy of the tow is low, the ribbon is damaged, and the quality decreases. [0003] The Venturi principle introduced in flow aerodynamics: When gas or liquid flows in the Venturi tube, at the narrowest point of the pipe, the dynamic pressure (velocity head) reaches the maximum value, the static pressure (rest pressure) reaches the minimum value, and the gas ( The velocity of the liquid) increases due to the change in the cross-sectional area of ​​the flow. The entire gushing flow can go through the pipe narrowin...

AI Technical Summary

Problems solved by technology

[0008] Purpose of the invention: To overcome the defects of no humidification before crimping or the humidification device is too complicated in the existing acetate fiber spinning process, to provide a quantitative humidification device for acetate fiber before crimping, which is easy to measure and control the humidification amount and easy to install and dismantle

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