Deep-groove screw for polyester fiber spinning regeneration
A technology of recycled polyester and screw, applied in the direction of melting of filament raw materials, can solve the problems of uneven heating of materials, slow material shearing, low plasticizing efficiency, etc., achieving good compaction effect and reducing melt backflow phenomenon. , The effect of smooth conveying
Active Publication Date: 2015-06-24
宁波大发新材料有限公司
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Problems solved by technology
The structure of the screw makes the material stagnate for too long, so that the material is not sheared quickly, so the plasticizing efficiency is not high, and the structure of the screw makes the material heated unevenly, so the structure of the screw needs to be further improved
Method used
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Embodiment Construction
[0012] The preferred embodiment of the deep-grooved screw for spinning recycled polyester fiber of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0013] Such as figure 1 Described a kind of regenerated polyester fiber spinning uses deep-groove screw, the screw rod length of this screw rod and the diameter ratio of flight are 29:1, successively by feeding section (1), melting section (2), homogenizing section ( 3) Composed of a mixing section (4), wherein diamond-shaped convex nails (41) are distributed on the circumference of the mixing section (4). The depth of the screw groove in the feeding section (1) is increased by 2mm, and the depth of the screw groove in the melting section (2) is increased by 1.2mm, so that the material compaction effect is better and the transportation is more stable; in addition, by reducing the screw melting section ( 2) The length of the length of 500mm and the way of increasing th...
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Abstract
The invention relates to the technical field of screw extruders, and in particular to a deep-groove screw for polyester fiber spinning regeneration. The deep-groove screw for polyester fiber spinning regeneration adopts the technical scheme that the diameter ratio of screw length to screw ridge of the screw is 29:1; the screw comprises a feeding section, a fusing section, a homogenization section and a mixing section sequentially; rhombus-shaped raised nails are distributed at the periphery of the mixing section; the depth of the screw groove of the feeding section is 35.0-36.0 mm; the depth of the screw groove of the fusing section is 10.8-11.5 mm; and the dimension proportion of the feeding section to the fusing section to the mixing section to the homogenization section is (105-110):(136-144):(98-108):(26-29). Since the depths of the screw grooves of the feeding section and the fusing section are increased, the compaction effect of materials is better, and the convey of the materials is more stable; and moreover, the fusing section is downsized, so that melt backflow is obviously reduced, compared with the melt backflow of the original screw.
Description
technical field [0001] The invention relates to the technical field of screw extruders, in particular to a deep-grooved screw used for spinning recycled polyester fibers. Background technique [0002] With the development of synthetic fiber industry, screw extruder has been widely used in melt spinning. The extruder mainly consists of a screw and a sleeve. The spun polymer chips are plasticized into a uniform melt through the extrusion system, and the melt is pressed to the spinning metering pump under the thrust of the screw. [0003] At present, most of the spinning screws used by recycled spinning chemical fiber production enterprises are polyester chip spinning screws, which are quite mature for polyester chip spinning. Business welcome. However, when used in the production of regenerated spinning fibers with PET bottle flakes, polyester waste silk friction materials, and polyester chips as the main raw materials, their advantages are indifferent due to differences in...
Claims
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IPC IPC(8): D01D1/04
Inventor 钱军邢喜全陈炎猛王方河
Owner 宁波大发新材料有限公司