Steam heating device of short fiber production line

Abstract

The invention relates to a steam heating device of a short fiber production line, and belongs to the technical field of polyester short fiber production. The steam heating device comprises a heating box for steam heating of polyester fibers; the heating box comprises a horizontally arranged lower box body; the lower box body is detachably connected with an upper box body; the upper box body and the lower box body are arranged in parallel and are arranged at an interval in the vertical direction; a heating cavity is formed between the upper box body and the lower box body; polyester fibers penetrate through the heating cavity; a backflow assembly is fixedly connected to the lower box body and communicates with the heating cavity; an air inlet groove is horizontally formed in the upper surface of the lower box body and communicates with the interior of the heating cavity; the backflow assembly communicates with the air inlet groove; an air guide groove is formed in the lower box body and penetrates through the lower box body; a heat preservation mechanism is arranged on the lower box body and located on the side, away from the lower box body, of the backflow assembly; and the heat preservation mechanism communicates with the air guide groove. The steam heating device has the effect that the polyester fiber heating effect is improved, and therefore the polyester drafting quality is improved.

Description

technical field [0001] This application relates to the field of polyester staple fiber production technology, in particular to a steam heating device for a staple fiber production line. Background technique [0002] Polyester staple fiber is a fiber obtained by spinning polyester into tow and then cutting it. The wear resistance of polyester is second only to nylon and ranks second among synthetic fibers. At the same time, polyester has the advantages of low water absorption and moisture regain and good insulation performance. , so it is widely used. [0003] In the related art, the Chinese invention patent application with the publication number CN105887232A discloses a method for preparing black polyester staple fibers for wire harness materials, including the following steps: ① using polyester bottle flakes and environmentally friendly PET-type black masterbatches as spinning raw materials, Spinning to obtain the primary fiber of the specified fineness; ②Then the primary...

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Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that the steam nozzle sprays steam onto the polyester fiber, and because the steam nozzle is located in the middle, the heating of each part of the polyester fiber is uneven, and the polyester fiber located at the edge is compared with the polyester fiber located in the middle. Polyester fibers are not heated well, resulting in poor drawing quality of polyester fibers

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