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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 the problems of inconvenient installation and improvement, inconvenient assembly and disassembly, and increased design difficulty, so as to reduce equipment maintenance costs, eliminate wear, and reduce downtime effect of time

Active Publication Date: 2017-10-13
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 US2003007709A1, 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 US2003007709A1, 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

[0054] 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.

[0055] 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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Abstract

The invention provides a screw supporting device and a double-screw extruder with the same. The screw supporting device comprises one or more pairs of screw supporting elements. The two screw supporting elements used in a pair are installed in the same axial positions of two screw mandrels respectively. The screw supporting elements comprise inner rings and outer rings, wherein the inner rings are installed on the screw mandrels and rotate along with the screw mandrels, the two outer rings are limited by each other, the axial length of the outer rings is smaller than that of the inner rings, gaps between the outer rings and the inner wall of a machine barrel in the radial direction are smaller than those between screw edges of the screws and the inner wall of the machine barrel, a radial gap between the two outer rings is smaller than that between the two screws, and the inner rings and the outer rings rotate relatively. By the adoption of the double-screw extruder with the screw supporting device, one or more different positions of each screw are supported, so that friction between the screws and the machine barrel and the friction between the screws are 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): B29C47/08B29C47/40
CPCB29C48/2522B29C48/40
Inventor 龙志斌龙技李超
Owner HUNAN KUANGWEI TECH CO LTD
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