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Method and arrangement for continuous filtering of particles out of a liquid

一种过滤装置、液体的技术，应用在分离方法、化学仪器和方法、过滤分离等方向，能够解决操作过程中断、产量降低等问题

Inactive Publication Date: 2006-06-28
李孝成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result is an interruption of the operating process and thus a reduction in production when the filter unit is cleaned

Method used

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  • Method and arrangement for continuous filtering of particles out of a liquid

Examples

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Embodiment Construction

[0012] The filtering device shown in FIGS. 1 and 2 comprises a tank 10 in which the treatment fluid to be filtered of larger and finer particles, for example cutting suspension from a cutting machine, is continuously supplied through an inlet 12 . Suspended within the tank 10 are at least two, but preferably a plurality of individual filtration units 14 . In the example shown, three such units 14 are immersed in the contaminated suspension within the tank 10 . Each filter unit 14 comprises a drum 16, on the perforated peripheral surface 16a of which is mounted a filter means 18, for example in the form of filter cloth. Drum 16 is rotatably mounted on a bracket 20 suspended from an upper portion 22 of tank 10 .

[0013] From the hub of each drum 16 a filtrate outlet pipe 24 leads upwardly to a respective filtrate pump 26 mounted on the upper part 22 of the tank. As can be seen in Figures 1 and 2, an outlet line 28 with a closable inlet valve 30 is connected to each pump 26, t...

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PUM

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Abstract

Method and arrangement for continuous filtering of particles out of a contaminated liquid by means of a number of separate filtering units ( 14 ) in order continuously to feed purified liquid to a consumer. Each filtering unit ( 14 ) comprises a rotatable, perforated drum ( 16 ) with a particle-catching filter means ( 18 ) on the outer surface of the drum. A first predetermined degree of coating with particles is created on the filter means of the drums, and purified liquid inside all the drums of the filtering units ( 14 ) except at least one, which is kept inactive in a standby state by shutting off the associated pump ( 26 ), is then fed to a consumer. The feed of purified liquid from a drum to the consumer is interrupted when a second predetermined, higher degree of coating with particles has been reached on the filter means on an individual drum, at least one filtering unit kept in standby state being activated as replacement for the filtering unit(s) from which the feed of purified liquid has been interrupted. The filter means of each filtering unit shut down is cleaned, and liquid in the tank is made to pass through the cleaned filter means and to circulate back to the tank until the first predetermined degree of coating with particles has been reached on the filter means of the drum. The cleaned shut-down filtering unit is put in a standby state by shutting off its pump. The second, higher degree of coating is detected by means of a respective pressure sensor coordinated with each filtrate outlet pipe ( 24 ).

Description

technical field [0001] The invention relates to a method for the continuous filtration of particles from contaminated liquid by means of two or more separate filter units, each of which comprises a rotatable, active A perforated drum, the outer surface of which has a filter device for trapping particles, the method comprising the steps of: keeping the filter unit submerged in the tank of the liquid to be purified so that the liquid can be removed by means of hydrostatic pressure flow through the filter device and into the drum, on which the particles to be separated are captured and in a coating on which the previously captured particles are formed; and by a corresponding pump and an associated filtrate outlet Purging liquid is supplied from the drum to the consumer. Background technique [0002] It was previously known that when filtering certain treatment fluids, particles smaller than the screen of the filter element are filtered in such a way that first a layer of parti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D33/37B01D33/073B01D35/12
CPCB01D33/073B01D33/37B01D33/461B01D33/48B01D33/76B01D35/12
Inventor 李孝成
Owner 李孝成