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Multi-shaft extruder

A technology of extruder and axis, applied in the field of extruder, can solve problems such as strength limitation, and achieve the effect of high material temperature and high melting power

Active Publication Date: 2013-04-24
BLACH VERWALTUNGS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

14 Nm / cm per shaft when a twin-screw extruder is equipped with a packaged system of support shafts and conveying elements with a Da / Di of 1.55 3 The torque density according to the prior art is a limiting value which is also limited by the strength of the supporting shaft

Method used

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  • Multi-shaft extruder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] according to figure 1 , the multi-shaft extruder comprises a drive device 1 with twelve pinion shafts 2 arranged along a circle and connected via an adapter 3 to a worm shaft 4 of a processing part 15 .

[0026] according to figure 2 , the twelve shafts 4 of the processing unit 5 are arranged in an axis-parallel manner along the pitch circle 7 in the annular space 8 between the outer housing 9 and the inner core or inner housing 10 and rotate in the same direction. The worm shaft 4 is non-rotatably connected to the interlocking conveying screws 11, 12, 13 and other elements. To this end, the conveying screws 11, 12, 13 and other elements are connected via spline teeth 14 (cf. image 3 ) is pushed onto axis 4.

[0027] according to figure 2 , The outer casing 9 is provided with an axis-parallel concave arc segment 15 inside. Likewise, the inner housing 10 has an axis-parallel concave arc segment 16 . The arc segments 15 , 16 receive the corresponding shaft 4 and ...

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PUM

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Abstract

A multi-shaft extruder has between an exterior housing (9) and an interior housing (10) at least six worm shafts (4) disposed in a circle (7). The drive (1) of the multi-shaft extruder has two pinion shafts (2) which are partitioned into groups of identical design and disposed on a circle (7), the pinion shafts being radially driven from the inside and from the outside at equal forces and in the same direction and in diametrical opposition and coaxially connected to the worm shafts (4) of the process part (5) via couplings (3), the worm shafts (4) having a feed length (L) of at least six Do and a Do / Di ratio of 1.5 to 1.93, wherein Do is the outside diameter and Di is the inside diameter of the feed screws (11, 12, 13) and the torque density of the extruder is at least 50 Nm / cm3.

Description

technical field [0001] The invention relates to an extruder for the continuous dispensing of substances, said extruder comprising drive means and processing means reliably connected to the drive means by means of a plurality of worm shafts arranged along a circle. Background technique [0002] In many cases, the mechanical and thermal equipment of the substance with an extruder is carried out in several stages through a combination of conveying sections distributed over the processing length for mixing, melting, wetting, dispersing, degassing, reacting, etc. In this case, different substances, such as granules, fibers, powders, etc., which are at least partly viscous and can be plastically deformed in different forms and concentrations, are supplied, processed and extruded in a plastic, temperature-controlled process to form Shaped items such as profiles or particles that form unshaped. This requires a lot of energy for heating and plasticizing if the article is fed to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/08B29C47/42B29C48/43
CPCB29C47/6031B29C47/0009B29C47/6056B29C47/42B29C47/0801B29C47/6037B29C47/48B29C48/03B29C48/252B29C48/435B29C48/445B29C48/54B29C48/55B29C48/57B29B7/485B29B7/488B29B7/489B29B7/603B29B7/845B29B7/90B29C48/43B29C48/25
Inventor J·布拉赫M·布拉赫
Owner BLACH VERWALTUNGS GMBH