Study Of Fiber Content's Dissolution And Cleaning System By Using Automatical Testing Line

Textile fiber content test has a very important position in numerous textile test items, it is particularly important for the quality inspection agency to detect the textile fiber content quickly and accurately. At present, the quantitative analysis methods in domestic textile industry mainly include chemical dissolution method, the direct split method, and microscopy method. Most of these detection methods rely on single manual inspection, testing process is still using the traditional drying method, and in the dissolution process of the quantitative chemical analysis of textile fiber content, it is generally used artificial stirring or mechanical vibrations to accelerate the fiber dissolution. This method is not only time-consuming, laborious, poor assisted dissolution effect and the long-term contact on chemical reagent is harmful to the operators. Therefore, it is very important to study of fiber content automatic test equipment which has a stable performance and high detection efficiency.Firstly, in order to improve the efficiency and shorten the detection time of blended fibers quantitative chemical analysis, the paper studies and improves the method of blended fiber quantitative chemical analysis. Ultrasonic technology was applied in dissolution of cotton polyester blended fiber quantitative chemical analysis. The factors affected the ultrasonic assisted dissolution were discussed, they are ultrasonic frequency, time, solution temperature, the samples whether are split or not when dissolving and the added amount of solvent in dissolution. The paper also discussed whether ultrasonic vibration would bring quality loss of blended fiber insoluble material. The experiment purpose is to provide support for the application of ultrasonic assisted dissolution in blended fiber quantitative analysis field. The experimental results of ultrasound assisted dissolution in show that ultrasonic assisted dissolution employed in cotton polyester blended fiber quantitative chemical analysis can effectively shorten the dissolution time, improve the detection efficiency; can be a good alternative to traditional dissolution methods; can meet the testing accuracy with ultrasonic assisted dissolution under the ultrasonic frequency of 20 kHz, 28 kHz and 40 kHz. The best dissolved effect can be achieved in 30 mins under the condition that the ultrasonic frequency is 20 kHz and solution temperature is 50 °C; ultrasonic assisted dissolution used in cotton polyester blended fiber quantitative chemical analysis can reduce the added amount of the solvent in dissolution, the best ratio between tested samples and the added amount of solvent is 1:50. The results also draw the conclusion that the samples cut into small pieces or manual split have better dissolution effect when dissolution by the ultrasonic assisted than the samples that cut into small squares. Besides, ultrasonic vibration does not cause quality loss of blended fiber insoluble material.Secondly, according to the design conditions and requirements, the paper designs the dissolved and cleaning system of the fiber content automatic test equipment. Determine the process of dissolution and cleaning, design the overall layout of dissolution and cleaning system. And divided dissolution and cleaning system into dissolution, cleaning, waste dump and processing liquid modules. According to the general layout of the system and the functions different modules need to implement, design a new dissolution reaction vessel, which including a new type of yarn sieve, carrier device for sieve yarn, and carrier device for beaker; design a new conveyor system that meet the functional requirements of the system; design a waste dump devices and a processing liquid device. The dissolution and cleaning system has stable working ability, high transport accuracy, and high testing efficiency. And it can also dissolve and clean 25 samples at the same time.Finally, the key mechanism of dissolution and cleaning system was designed and analyzed in the paper. Finish the finite element analysis about the fixed beam of vertical lifting mechanism and sucker mounting bracket by ANSYS software. The analyses results show that the strength and stiffness of these institutions can meet the allowable requirements, and the sucker mounting bracket does not generate resonate. Using ADAMS to analyze the transmission performance of slider crank mechanism which is used to locate and clamp the beaker-carrier. It is shown that it has good transmission performance. And it can realize the guide and clamping of the beaker-carrier.