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Method and apparatus for operating a screening wheel filter

A trommel screen and filter technology, which is applied in the field of running trommel filter machines and devices, can solve the problem of consuming cleaning medium, namely melt, and achieve the effects of simple start, low operating cost and low price

Active Publication Date: 2016-01-13
GNEUSS GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This continuous cleaning process consumes a particularly large amount of cleaning medium, the melt

Method used

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  • Method and apparatus for operating a screening wheel filter

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Embodiment Construction

[0027] Here, the figure schematically shows a trommel 1 , here, sieves 2 and 2 ′ are shown as representative of a plurality of sieves. The screens 2 are respectively arranged between the slats 3, 3', 3" which abut against the inner wall of the trommel filter housing. The screens 2 are now located in front of the melt channel 4, while the screens 2' are located on the opposite side. The front of the cleaning slot 5 of the washing station. It can be clearly seen that the cleaning slot 5 substantially spans the size of the filter screen 2' in the radial direction, but crosses a filter screen 2' that is perpendicular to the radius in the direction perpendicular to the radial direction. The angle of extension is much smaller, but also traverses an angle smaller than the indicated rotation angle 6 in each stroke.

[0028] The control or adjustment device 7 can on the one hand pre-set parameters via the input mechanism 8, and on the other hand, provide the control or adjustment devic...

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Abstract

A method and an apparatus for operating a screening wheel filter for high-viscosity melts with pressures of more than 10 bar and temperatures of higher than 90 DEG C, wherein a screening wheel (1) is rotationally driven step by step, and screening inserts (2) arranged in the screening wheel (1) are successively subjected to a stream of cleaning agent produced by a cleaning agent drive (9) in a backflushing cleaning station, are to be optimized in such a way that less cleaning agent is used, better cleaning of the screening inserts takes place and a saving of energy is ensured. For this purpose it is proposed that the cleaning backflushing in the backflushing cleaning station takes place during the rotation of the screening wheel (1), wherein an open-loop or closed-loop control device (7) assigned to the cleaning agent drive (9) is used to set the amount of cleaning agent and / or the pressure of the cleaning agent and / or the flow rate of the cleaning agent in dependence on the rotational speed of the screening wheel (1) and / or in dependence on a differential pressure prevailing at the screening inserts (2) located in the melt channel (4) and the effective opening of the slot die normal to the radial is less than the distance covered by the screening wheel (1) during a driving step.

Description

technical field [0001] The present invention relates to a method of operating a trommel filter for high viscosity melts having a pressure of more than 10 bar and a temperature of more than 90° C., wherein the trommel is driven in step rotation and the filter screen arranged in the trommel is The backwashing station is continuously acted upon by a flow of cleaning medium produced by a cleaning medium drive mechanism, and also a trommel filter carrying out the method. Background technique [0002] A trommel filter with a corresponding backwash station belongs to the prior art, for example according to DE 103 26 487 A1. In such a trommel filter, the sieve in the melt channel is rotated out of the melt channel by a drive acting on the trommel and replaced with a cleaned sieve. The backwashing station is located as close as possible to the front of the melt channel in the direction of rotation. In the backwashing station, during the operation of the filter, that is, when the dru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/68B29C47/08B29C47/92B29C48/92
CPCB29C48/273B29C48/92B29C48/6914B29C48/2725B29C2948/9259B29C2948/9299B29C2948/92514B29C2948/92961B29B7/58
Inventor D.格诺伊斯S.格诺伊斯
Owner GNEUSS GMBH
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