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A screw support device and a twin-screw extruder with the device

A twin-screw extruder and support device technology, applied in the field of screw support devices, can solve problems such as inconvenient installation and improvement, inconvenient assembly and disassembly, and increased design difficulty, so as to increase design difficulty, eliminate wear and tear, and reduce equipment maintenance cost effect

Active Publication Date: 2017-10-24
HUNAN KUANGWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Same as the patent US5962036A, because a part of the support structure is set on the screw and a part is connected to the barrel, it has the same inconvenience of assembly and disassembly as the patent US5962036A, which increases the difficulty of barrel processing and screw assembly, and is inconvenient for existing Improvement of machine installation and increase of design difficulty

Method used

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  • A screw support device and a twin-screw extruder with the device
  • A screw support device and a twin-screw extruder with the device
  • A screw support device and a twin-screw extruder with the device

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Embodiment Construction

[0034] 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.

[0035] Such as Figure 1A As shown, in the twin-screw extruder, the power is provided by the motor 70, and the torque is distributed and decelerated through the gearbox 60. The screw 30 (30ˊ) is connected to the output shaft of the gearbox 60 through the connecting sleeve 50, and the material is fed through the feeding port 40a. Entering...

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Abstract

The invention provides a screw supporting device and a twin-screw extruder with same. The screw supporting device comprises a screw supporting element and a shaft sleeve, wherein the screw supporting element and the shaft sleeve are combined for use, and are respectively mounted on same axial positions of two screw mandrels; by taking a center line of the screw supporting element as an axis, a virtual cylindrical surface tangential to screw flight of another screw which is provided with a shaft sleeve at the same axial position, and a screw supporting element part with a distance, greater than the radius of the virtual cylindrical surface, to the center line are constructed; an axial distance of adjacent screw elements at the two ends of the shaft sleeve which is combined with the screw supporting element for use is greater than zero; and a gap, in a radial direction, between the screw supporting element and the inner wall of a machine barrel is smaller than a gap between the screw flight of the screw and the inner wall of the machine barrel. According to the twin-screw extruder with the screw supporting device provided by the invention, two or more different positions of the screws are supported, so that abrasion between the screws and the machine barrel as well as between the screws 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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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/40B29C47/58B29C48/50
CPCB29C48/40B29C48/50
Inventor 龙志斌龙技李超
Owner HUNAN KUANGWEI TECH CO LTD
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