Screw support device and twin-screw extruder with same

A twin-screw extruder and support device technology, applied in the field of screw support devices, can solve problems such as melt conveying capacity drop, melting capacity drop, pressure fluctuation, etc., to reduce equipment maintenance costs, reduce downtime, and prolong service life Effect

Active Publication Date: 2015-12-02
HUNAN KUANGWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the wear occurs in the melting section, it will lead to a decrease in the melting ability, and cause uneven temperature and pressure fluctuations; if the wear occurs in the melt delivery section, it w...

Method used

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  • Screw support device and twin-screw extruder with same
  • Screw support device and twin-screw extruder with same
  • Screw support device and twin-screw extruder with same

Examples

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Embodiment Construction

[0050] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims without being limited to the embodiments described herein. In addition, these embodiments are for the purpose of fully disclosing the present invention and facilitating a complete understanding of the scope of the claims by those skilled in the art. For ease of description, the size and relative size of each layer and area in the figure are exaggerated. The same reference numerals refer to the same elements in the figures.

[0051] Such as Figure 1A As shown, in the twin-screw extruder, the power is provided by the motor 60, and the torque is distributed and decelerated through the gear box 50. The screw 20 is connected with the output shaft of the gear box 50 through the connecting sleeve 40, and the material enters the barrel through the feeding port 30a. ...

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PUM

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Abstract

The invention provides a screw support device and a twin-screw extruder with the same. The screw support device comprises a screw support element or a plurality of screw support elements. The screw support element/screw support elements is/are installed on a screw mandrel. Each screw support element comprises an inner ring and an outer ring, wherein the inner ring is installed on the screw mandrel and rotates along with the screw mandrel; a machine cylinder is provided with a structure limiting the rotation of the outer ring; the axial length of the outer ring is smaller than the axial length of the inner ring; the space between the outer ring, in the radial direction, and the inner wall of the machine cylinder is smaller than the space between a screw flight of a screw and the inner wall of the machine cylinder; the inner ring and the outer ring rotate relatively. Each screw support element is provided with fluid passages. The arrangement form/forms of the screw support elements on the two screws is/are a staggered arrangement or/and a symmetry arrangement. According to the twin-screw extruder with the screw support device, a position or a plurality of different positions of each screw is/are supported, so that the abrasion between the screws and the machine cylinders is eliminated.

Description

technical field [0001] The invention relates to a screw support device, in particular to a screw support device for a twin-screw extruder, and a twin-screw extruder with the device. Background technique [0002] Twin-screw extruders are widely used in polymer processing such as molding, blending, modification, and reactive extrusion due to the variability and adaptability brought by its building block structure and excellent mixing performance. The twin-screw extruder mainly includes a transmission system, a feeding system, an extrusion system, a heating and cooling system, and a control system. The extrusion system is the core part of the twin-screw extruder, mainly including a screw and a barrel. The material is fed into the barrel by the feeding system, and the rotation of the screw in the barrel produces screw conveying and mixing effects on the material, so that the material undergoes extrusion processes such as solid conveying, melting, exhaust, mixing and melt conveyi...

Claims

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Application Information

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IPC IPC(8): B29C47/58B29C47/60B29C47/38B29C48/395B29C48/50
CPCB29C48/395B29C48/50B29C48/505
Inventor 龙志斌龙技李超
Owner HUNAN KUANGWEI TECH CO LTD
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