Embedded ultrasonic deaeration device and deaeration process

Abstract

The invention discloses an embedded ultrasonic deaeration device and a deaeration process. The device mainly comprises a material dissolving tank with a temperature control system; the top of the material dissolving tank is provided with an inlet valve and a thermometer, while the bottom is provided with an outlet valve; and a stirrer externally connected with a transmission mechanism is arrangedin the material dissolving tank. The embedded ultrasonic deaeration device is characterized by also comprising an ultrasonic generator vertically arranged in the tank body of the material dissolving tank and directly contacted with spinning solution, wherein the ultrasonic generator has the ultrasonic frequency range of 20-200kHz and the ultrasonic power of 100-5,000W. The deaeration device is used in the deaeration process; and the deaeration process comprises the following steps of: adding spinning materials into the material dissolving tank according to the known process, starting the stirrer and the ultrasonic generator, setting the spinning temperature as the temperature of the spinning solution, stirring and performing ultrasonic deaeration for 0.5 to 3 hours; and after the materials are dissolved uniformly, closing the stirrer, continuously performing deaeration for 5 to 30 minutes by using ultrasonic waves until air bubbles completely disappear, and closing the ultrasonic generator.

Description

technical field [0001] The invention relates to a solution spinning technology, in particular to a built-in ultrasonic defoaming device and a defoaming process. The defoaming device and the defoaming process can be applied in the solution spinning process. Background technique [0002] In the commonly used chemical fiber spinning and forming process, solution spinning is an important method. During the solution spinning process, the defoaming effect of the spinning solution directly affects the quality of the product fiber, and the spinning solution with a small or even a small amount of air bubbles will damage or break the fiber at the bubble point, affecting the use. Conventional defoaming methods in the current spinning production have static defoaming, chemical drug defoaming and degassing under reduced pressure. It is conducive to continuous production; for spinning solutions with high viscosity, the defoaming effect is not ideal; (2) The chemicals added in the chemic...

AI Technical Summary

Problems solved by technology

During the solution spinning process, the defoaming effect of the spinning solution directly affects the quality of the product fiber, and the spinning solution with a small or even a small amount of air bubbles will damage or break the fiber at the bubble point, affecting the use

Conventional defoaming methods in the current spinning production have static defoaming, chemical drug defoaming and degassing under reduced pressure. It is conducive to continuous production; for spinning solutions with high viscosity, the defoaming effect is not ideal; (2) The chemicals added in the chemical defoaming method will affect the physical and chemical properties of the spinning solution, and may remain in the fiber product; (3) The vacuum defoaming method has higher requirements on the sealing and material of the melting tank

In addition, during the implementation of these defoaming methods, it is generally required to increase the temperature of the spinning solution to promote the dissolution of the material and the overflow of the air bubbles. High consumption and long time

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