Filter unit for an extruder system, filter arrangement and sieve changing device

A technology of filter and extruder, which is applied in the direction of fixed filter elements, filter separation, chemical instruments and methods, etc. It can solve the problems of filter unit pressure drop, etc., and achieve the effect of simple replacement and optimized production capacity

Active Publication Date: 2013-01-23
COPERION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this filter unit still results in a significant pressure drop

Method used

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  • Filter unit for an extruder system, filter arrangement and sieve changing device
  • Filter unit for an extruder system, filter arrangement and sieve changing device
  • Filter unit for an extruder system, filter arrangement and sieve changing device

Examples

Experimental program
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Embodiment Construction

[0030]For processing plastics, the extruder system 1 has a twin-screw extruder 2 which is constructed in a conventional manner. The extruder 2 has two worm shafts 3, 3'. These worm shafts are arranged in corresponding bores 4, 4' The worm shafts 3, 3' are configured to closely mesh and rotate in the same direction. The worm shafts 3, 3' are driven by an electric motor 6 through a reduction and distribution gear unit 7 to which the housing 5 is flanged.

[0031] In the vicinity of the gear unit 7 , in other words at the upstream end of the extruder 2 , a feed funnel 8 opens into the housing 5 . The housing 5 is provided with a heater 10 in the conveying direction 9 after the funnel 8 . Thereafter two degassing openings 11 , 12 opening outwards from the housing 5 are provided consecutively in the conveying direction 9 , which are connected to vacuum pumps 13 , 14 respectively. A damming mechanism 15 , 16 in the form of a worm section conveying opposite the conveying dir...

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PUM

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Abstract

The invention relates to a filter unit for an extruder system, a filter arrangement and a sieve changing device. The filter unit (35) for an extruder system has an outer support body (36), which is hollow cylindrical and limits an interior (42). A plurality of outer through-openings (45) open into the interior (42). An outer filter element (37) is arranged on the support body (36) in the region of the outer through-openings (45). An inner support body (38) with a plurality of inner through-openings (67, 68) is arranged in the interior (42). An inner filter element (39) is arranged on the inner support body (38) in the region of the inner through-openings (67, 68). Using the filter unit (35) according to the invention, a low differential pressure of a plastics material melt to be filtered can be achieved as both the outer filter element (37) and the inner filter element (39) provide a corresponding filter area.

Description

technical field [0001] The present invention relates to a filter unit for an extruder system having an outer support body having a hollow cylindrical shape with a central longitudinal axis defining an interior and having a plurality of Outer through opening; Outer filter element, this outer filter element is arranged on the outer support body in the region of outer through opening; Inner support body with a plurality of inner through openings arranged in the interior; And inner filter element, the The inner filter element is arranged on the inner carrier in the region of the inner through-opening. The invention also relates to a filter device and a screen changing device for an extruder system with such a filter unit. Background technique [0002] A filter unit or filter arrangement is known from US Pat. No. 4,849,10 with a plurality of filter units, known as cartridge filters, for the homogeneous filtration of plastic melts. The cartridge filters each have a support body ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/68B29C48/03B29C48/37B29C48/40B29C48/405B29C48/54B29C48/55B29C48/694
CPCB01D29/23B29C47/0815B29C47/0009B29C47/682B01D29/15B29C47/687B29C47/367B01D29/54B29C47/82B29C47/767B29C47/681B29C48/83B29C48/03B29C48/2554B29C48/37B29C48/387B29C48/54B29C48/55B29C48/6912B29C48/694B29C48/767B29C48/832B29B7/845B29B7/86B29C48/405B29C48/40
Inventor H-J·泽曼
Owner COPERION
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