Efficient plasticizing single-screw extruder

A single-screw extruder, high-efficiency technology, applied in the field of high-efficiency plasticizing single-screw extruder, can solve the problems of solid conveying efficiency, melting efficiency, melt mixing and conveying efficiency, etc., to achieve improved mixing capacity and energy-saving extrusion Forming effect

Inactive Publication Date: 2014-09-03
XINJIANG INST OF ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-efficiency plasticizing single-screw extruder, which effectively solves the problems of mismatching solid delivery efficiency, melting efficiency, and melt mixing delivery efficiency in the single-screw extruder

Method used

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  • Efficient plasticizing single-screw extruder

Examples

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Effect test

no. 1 example

[0021] The first embodiment: a high-efficiency plasticizing extruder with a nominal diameter of 90 mm and an aspect ratio of 30. Among them, the barrel of the circular body conveying section is a grooved barrel, the aspect ratio is 8, the groove depth is 4mm, the groove width is 8mm, the number of groove heads is 8, and the groove lead is 90mm; The barrel is a smooth barrel with a length-to-diameter ratio of 15; the barrel in the melt conveying section is a pin barrel with a length-to-diameter ratio of 7. The screw is a conventional screw with a lead of 45mm, the number of screw threads is 1, and the normal phase width of the screw edge is 4.5mm; the groove depth of the solid conveying section is 3mm, and the length-to-diameter ratio is 8; the length-to-diameter ratio of the screw in the melting section is 15. The depth gradually decreases from 3mm to 2mm along the screw axis; the groove depth of the screw in the melting section is 2mm, and the aspect ratio is 7. The screw sp...

no. 2 example

[0023] The second embodiment: a high-efficiency plasticizing extruder with a nominal diameter of 45 mm and an aspect ratio of 25. Among them, the barrel in the solid conveying section is a grooved barrel, the aspect ratio is 8, the groove depth is 4mm, the groove width is 8mm, the number of groove heads is 8, and the groove lead is 90mm; the melting section barrel It is a grooved barrel with a length-to-diameter ratio of 12. The groove depth is 4mm and gradually becomes shallower along the screw axis until the end of the melting section disappears. The groove width is 8mm, the number of groove heads is 8, and the groove lead 90mm; the barrel of the rotatable melt conveying section is a smooth barrel with a length-to-diameter ratio of 5. The screw is a reverse compression ratio screw with a lead of 45mm, the number of screw threads is 1, and the normal phase width of the screw edge is 4.5mm; the groove depth of the solid conveying section is 3mm, and the length-to-diameter rati...

no. 3 example

[0025]The third embodiment: a high-efficiency plasticizing extruder with a nominal diameter of 120 mm and an aspect ratio of 35. Among them, the barrel in the solid conveying section is a smooth barrel with an aspect ratio of 12; the barrel in the rotatable melting section is a smooth barrel with an aspect ratio of 14; the barrel in the rotatable melt conveying section is a pin barrel with an aspect ratio of 12. for 9. The screw is an ordinary screw with a lead of 45mm, the number of screw threads is 1, and the normal phase width of the screw edge is 4.5mm; the groove depth of the solid conveying section is 7.5mm, and the length-to-diameter ratio is 12; the groove depth of the melting section gradually changes from 7.5mm to 3.5 mm, the length-to-diameter ratio is 12; the groove depth of the screw in the melting section is 3.5mm, and the length-to-diameter ratio is 9. The screw speed is 60r / min, the driving power is 30kW, the barrel speed of the groove melting section is 12r / m...

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Abstract

The invention discloses an efficient plasticizing single-screw extruder, which is composed of a solid conveying section cylinder (6), a rotatable melting section cylinder (14), a rotatable melt conveying section cylinder (20), a screw (5), a screw transmission system (4), a melting section cylinder transmission system (13), a melt conveying section cylinder transmission system (19), a solid conveying section heating and temperature measuring device (7), a melting section heating and temperature measuring device (12) and a melt conveying section heating and temperature measuring device (18). At a certain screw rotating speed, the shearing speed of the material at the melting section is increased by adjusting the rotating speed of the rotatable melting section cylinder so as to adjust the material melting efficiency; the shearing speed of the material at the melt conveying section is increased by adjusting the rotating speed of the rotatable melt conveying section cylinder so as to adjust the material mixing efficiency, thus realizing coordination and unification of the solid conveying efficiency, the melting efficiency and the melt mixing conveying efficiency and further realizing high speed and efficient plasticization of polymers.

Description

technical field [0001] The invention is a high-efficiency plasticizing single-screw extruder, which can realize high-speed, high-efficiency, and energy-saving extrusion molding of plastic products such as pipes, sheets, and special-shaped materials by matching solid delivery efficiency, melting efficiency, and melt mixing delivery efficiency. . Background technique [0002] Single-screw extruders are widely used in the field of polymer material molding and processing due to their outstanding performance such as strong pressure building capacity, good stability, high cost performance, and energy saving. The introduction of the simple screw extruder of the groove machine not only significantly improves the solid conveying efficiency and the stability of the extrusion process, but also has the significant advantages of large specific output and low specific energy consumption. Grooving in the barrel of the solid conveying section has become the mainstream structure of the curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/38B29C47/66B29C47/08B29C48/395
CPCB29C48/397B29C48/681
Inventor 金晓明贾明印薛平余斌潘江如黄勇
Owner XINJIANG INST OF ENG
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