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Liquid ring vacuum pump for degassing plastic melts

A technology of liquid ring vacuum pump and molten liquid, which is applied in the direction of pumps, rotary piston pumps, machines/engines, etc., and can solve the problems that continuous operation cannot be realized

Active Publication Date: 2012-01-25
GNEUSS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, continuous operation is not possible as is the filtration of ultra-fine pollutants

Method used

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  • Liquid ring vacuum pump for degassing plastic melts
  • Liquid ring vacuum pump for degassing plastic melts

Examples

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Embodiment Construction

[0018] The present invention is further described according to the accompanying drawings. In this case, the drawing shows a liquid ring vacuum pump 1 with a pump inlet 2 and a pump outlet 3 . The liquid ring vacuum pump 1 is integrated into a circuit 4 in which the compressed liquid is purged. The circuit 4 has a continuously operating filter 5 , the motor 6 of which replaces the filter element 7 depending on the contamination of the filter element via the indicated adjustment device 8 .

[0019] The pump outlet 3 is also formed as a connection to the circuit 4 at the same time. In the liquid separator 9 the exhaust gas is separated from the compressed liquid, from which the compressed liquid reaches the continuously working filter 5 . Furthermore, a cooling device 10 is provided, by means of which the compressed liquid is brought to the desired level.

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Abstract

A liquid ring vacuum pump (1) for degassing plastic melts, having a pump inlet (2) where gases are taken in, and a pump outlet (3) via which gases are blown out, and having a cycle (4) for the compression liquid, wherein a replaceable filter insert is provided for filtering coarse contaminants out of the compression liquid, and wherein a precondensation system is optionally provided upstream of the pump inlet for filtering fine contaminants out of the compression liquid, is to be further developed such that the pump is able to proceed continuous operation even during a filter change and that the compression liquid cycle does not have to be interrupted, wherein permanent stable process conditions are to be established, and wherein the management of the filter system is to be designed in a simple and energy-efficient and environmentally sound manner.; The invention thus proposes for the compression liquid cycle (4) to be constantly closed and to have only one continuously operating fine and / or micro filter (5), replacing both the replaceable filter insert and the precondensation system.

Description

technical field [0001] The invention relates to a liquid ring vacuum pump for the degassing of plastic melts, with a pump inlet at which gas is sucked in and a pump outlet through which the gas is blown out, and with a circuit for compressing liquids (Kompressionsfluessigkeit), in There is a replaceable filter element for filtering coarser pollutants from the compressed liquid and, if necessary, a pre-condensation device for filtering finer pollutants before the pump inlet. Background technique [0002] Such liquid vacuum pumps are used, for example, for extruder degassing. When inhaling potentially toxic gases, contaminants such as melt particles etc. may also be inhaled together. Not only the toxic components of the gas but also the pollutants are largely absorbed by the compressed liquid. In order that these absorbed, possibly coarser dirt particles do not cause damage in liquid ring vacuum pumps, it is known to clean the compressed liquid in circuits with replaceable f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C19/00
CPCF04C19/004
Inventor D·格诺伊斯
Owner GNEUSS GMBH
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