High-strength high-modulus polyethylene fiber circular-blow cooling device

Abstract

The invention creatively discloses a high-strength high-modulus polyethylene fiber circular-blow cooling device, which comprises a gas storage tank (15) for storing cooling gas, a throttling valve (13) and a cooler (11), wherein the cooler (11) comprises a fixed seat (6) fixed on a spinning pack (1), and an inner barrel body (7) and an outer barrel body (8) which are correspondingly fixed on the fixed seat (6), the inner barrel body (7) is provided with a tow (2) passage, an annular pressure equalization chamber (9) with a sealed upper port and an opened lower port is formed between the inner barrel body (7) and the outer barrel body (8), the lower port of the annular pressure equalization chamber (9) is soaked in coolant (4) of a freezing water tank (3), multiple gas inlet holes (10) for cooling the tow (2) are uniformly distributed on the barrel wall of the inner barrel body (7), at least one gas inlet is arranged on the outer barrel body (8), and at least one exhaust port is arranged on the inner barrel body (7). After the structure is adopted, the cooling device has the advantages of simple and reasonable structure, high circulating rate, high cooling efficiency, good spinning quality and the like.

Description

technical field [0001] The invention relates to the production field of high-strength and high-modulus polyethylene fibers, in particular to a cooling device for surrounding air blowing used in the spinning process. Background technique [0002] At present, the production process of high-strength and high-modulus polyethylene generally adopts the jelly spinning method. The molten ultra-high molecular weight polyethylene spinning solution is spun out of the porous spinneret assembly and then directly cooled by the air layer, and then enters the freezing water tank to be quenched into jelly collagen filaments. ,Such as figure 1 shown. This method has the following disadvantages in the production process: [0003] 1. Due to the existence of oxygen and various gases in the air, after the high-temperature spinning solution sprayed from the spinneret assembly comes into contact with the air, the surface layer of the jelly filament will be oxidized and degraded immediately, the f...

AI Technical Summary

Problems solved by technology

[0005] 3. Because the distance between the freezing water tank and the spinneret assembly is too close, and the air layer distance is too small, the tension of the pre-spinning winder is transmitted to the spinneret hole, and the stretching time of the spinning liquid tension is not enough, resulting in serious uneven fiber thickness. Ultimately, the strength of high-strength and high-modulus polyethylene fibers is not high, the number of hairs increases, the number of broken ends increases, and the post-spinning draft is unstable

[0006] For this reason, many manufacturers and people of insight develop and develop at the above-mentioned defectives, but there is no ideal solution so far

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