SU1761201A1 - Filtrating element - Google Patents

Abstract

The invention can be used for the concentration of suspensions and solutions in the electronic, chemical, microbiological, food and other industries and allows for an increase in productivity by increasing the ratio of the area of the filtering surface to the volume of the filtering element. For this, the height of the corrugation of the corrugated filter curtain, spirally oriented with respect to the filter axis, located between the outer and inner tubes is: n (R2-rV2) -1.8-Vp2 - r2, where: R is the radius of the inner surface of the outer tube, g is radius of the outer surface of the inner tube. 4 Il.

Description

The invention relates to the field of cleaning liquids and can be used to implement separation processes using selective membranes, in particular, to carry out processes of micro- and ultrafiltration, the concentration of suspensions and solutions in the electronic, chemical, microbiological, food and other industries.

The goal is to increase productivity by increasing the ratio of the area of the filtering surface to the volume of the filtering element.

Figure 1 shows a general view of the cartridge filter element in the filter housing for tangential filtration of a liquid; figure 2 is a cross section of the filter along the line aa in figure 1; Fig. 3 is a cross-section of the corrugated membrane packet along line B-B in Fig. 1 in expanded form; figure 4 - view of the corrugated curtains with a spiral orientation of the corrugation from the end of the filter element.

The fluid cleaning filter contains coaxially arranged cylindrical body 1 (outer tube), inner perforated discharge tube 2, and end sealing covers 3. Extensions 4 serve to form the inlet chamber 5 and the outlet chamber 6. In the space between the cylindrical housing 1 and the perforated tube 2, a corrugated filter curtain 7 is arranged longitudinally about the filter axis, formed by a supporting mesh 8 made, for example, of polypropylene, membrane materials 9 (core filter) and a mesh turbulator 10 (made of polyethylene) located with working side of the membrane facing the filtered stream. Corrugated three-layer material is located around the inner tube 2 in such a way that

with

with

VJ a

ifO iO

the corrugations are helically oriented relative to the axis of the filter, and the ribs of the corrugations are parallel to the axis of the filter element.

Nozzles 11,12 and 13 serve for the supply of the source liquid, removal of the concentrate and filtrate, respectively. The height of the corrugation should be

2 g

where R is the radius of the inner surface of the outer tube;

r-radius of the outer surface of the inner tube.

Such a height of the corrugation provides the largest area of the filter surface for a given volume.

The filter works as follows.

The initial fluid is supplied through the nozzle 11 into the chamber 5, enters into the gaps between adjacent corrugations and is cleaned in the filter element 7. The filtrate is discharged through the nozzle 13 to the consumer.

five

The filtering element with the given ratios of the sizes of the corrugated curtain provides high filter performance.

Claims (1)

Claims A filtering element comprising outer and inner tubes, between which a corrugated filtering curtain is placed with a spiral orientation of the corrugation relative to the axis of the filtering element, characterized in that, in order to increase productivity by increasing the ratio of the area of the filtering surface to the volume of the filtering element, the height h of the corrugation lies in the range h R -r2 2r where R is the radius of the inner surface of the outer tube; r is the radius of the outer surface of the inner tube. fig 1 1761201 A-A eight 9 th FIG. 2 Ј- 6 7 FS / e 4