Automatic double-barrel-switching melt filter

Abstract

The invention discloses an automatic double-barrel-switching melt filter which comprises a melt feeding hole, a melt discharging hole, a first filter barrel and a second filter barrel. The feeding hole of the first filter barrel and the feeding hole of the second filter barrel are respectively connected with the melt feeding hole through feeding valves, the discharging hole of the first filter barrel and the discharging hole of the second filter barrel are respectively connected with the melt discharging hole through discharging valves, the melt feeding hole is provided with a pre-filtration pressure sensor, the melt discharging hole is provided with a post-filtration pressure sensor, the first filter barrel is provided with a first drain valve, the second filter barrel is provided with a second drain valve, and the feeding valves, the discharging valves, the first drain valve, second drain valve, the pre-filtration pressure sensor and the post-filtration pressure sensor are connected with a controller. The automatic double-barrel-switching melt filter alternately uses two filter barrels, not only can ensure the continuous operation of melt filtration and surely avoid broken yarn in spinning, but also ensure the spinning quality without influencing the temperature of the melt.

Description

technical field [0001] The invention relates to a filter, in particular to a filter for spun yarn melt in the melting high-speed spinning forming process. Background technique [0002] In the process of high-speed melt spinning, the filter is an indispensable device to improve the quality of spinning and reduce the cost of spinning. Since the diameter of the spun filaments is very thin and the spinneret hole is also very small, it is not allowed to mix any impurities or gel particles in the melt, so as not to cause damage to the equipment and affect the spinning quality. Improving the purity of the melt is one of the keys to ensure the normal spinning and the quality of the finished product. Therefore, a pre-filter must be installed during high-speed spinning to improve the purity of the melt and reduce the burden on the filter layer in the spinning assembly. The service life of the equipment is shortened, the waste silk caused by the replacement of spinning components is r...

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Problems solved by technology

[0003] Of course, the filter must also meet the requirements of continuous spinning, that is, to ensure that there is no disconnection during the spinning process. However, in the actual production process, when the filter is used for a long time, there are more impurities in the filter. At this time, the filter must be cleaned to ensure that the filter can work normally. At this time, the filter needs to be replaced. At present, the replacement of the filter is manually operated, and it is difficult to ensure the continuity of the melt during the replacement of the filter. Spinning is prone to breakage, which will increase production costs and affect production efficiency; and manual operation cannot accurately control the melt temperature, which is prone to errors and affects product quality

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