RU2019279C1 - Diaphragm flat-chamber separating apparatus - Google Patents

Abstract

FIELD: chemical engineering; separation of mixtures. SUBSTANCE: diaphragm separating apparatus incorporates housing, turbulator, drain support which carries on its surface base and semi-permeable diaphragm, and manifolds to admit mixture to be separated and discharge filtrate and concentrate. Drain support is made detachable in the form of stack of plates or reeled strips whose contact surfaces carry parallel protrusions or depressions which form through passages to tap off filtrate. Protrusions and depressions made in adjacent contact surfaces are predominantly inclined at opposite angles of tilt relative to base of plates or that of drain support strips. EFFECT: more sophisticated design and more effective separation of mixtures. 3 cl, 2 dwg

Description

 The invention relates to designs of membrane filtering elements of the chamber type and can be used to implement membrane technologies - microfiltration, ultrafiltration and reverse osmosis processes.

 Known drainage device of the membrane element, which is a plate made of plastic (fluoroplastic), on one side of which parallel grooves are made, the ribs between which have a figured profile. Along the length of the grooves, recesses are made with a cross section greater than the cross section of the grooves. On the other side of the plate there are transverse channels communicating with the grooves at their intersections. This drainage device with a membrane laid on it and o-rings is clamped between the cover and the bottom with screws.

 The lid has fittings for entering and exiting permeate.

 This technical solution for the design and functionality is the closest analogue of the present invention.

 The disadvantages of this design are the great complexity of manufacturing, the inability to accurately calculate the hydraulic resistance and throughput (live section), its unevenness over the entire drainage area, the complexity of washing and repair, and the limited choice of material.

 The purpose of the invention is to increase productivity and simplify the design.

 This goal is achieved by the fact that the drainage support of the membrane flat chamber element is assembled from identical plates with hollows or protrusions on the side contacting surfaces forming passage channels along the contact plane.

 The drainage support can be made in the form of one or more parallel strips with hollows or protrusions on the sides with the formation of passage channels in the roll.

 In order to assemble a drainage support with guaranteed formation of passage channels on the lateral surfaces of the plates (strips) making up it, parallel depressions or protrusions of the cross direction relative to opposite sides are made, with each channel of the structure intersecting with other channels.

 Plates (strips) can be made of various materials: metal, ceramics, glass, plastics, etc.

 In FIG. 1 shows a membrane chamber element with a drainage support recruited from the plates, a longitudinal section along the contact plane of two adjacent plates. Lines on the plate - the direction of the depressions or protrusions.

 Figure 2 shows a membrane element chamber with a drainage support in the form of a roll of strip, a longitudinal section.

 The membrane chamber element (see Fig. 1) consists of a housing 1 with fittings 11, 12, and 13 for the entrance of the shared mixture, the outlet of the spent mixture and permeate.

 The drainage support is assembled from plates 2 with depressions or protrusions 14 on the lateral contacting surfaces, forming one through the other intersecting channels for discharging the filtrate along the contact plane.

 The depressions or protrusions 14 are made parallel to each side of the plate at an acute angle to the base, but with an opposite angle of inclination.

 A membrane 3 with a filter substrate 4 is laid on the filtering surface of the drainage support, the edges of which are sealed with the housing 1.

 Replaceable throttling plates 5 and 6, overlapping the passage channel of the shared mixture, are fixed with a replaceable turbulizer plate 7, clamped through the gasket 9 by a cover 8, which is bolted 10 to the housing 1.

 The element operates as follows: the mixture to be separated is fed through the nozzle 11 into the cavity of the housing 15. Through the dies of the throttle plate 5, the mixture passes through the channels 18 of the turbulence plate 7 above the membrane 3, then through the dies of the throttle plate 6 into the cavity of the housing 16 and then by the fitting 12 to the exit.

 The permeate is filtered in the cavity 17 under the support drain from the plates 2 and through the collector exits the fitting 13.

 The mode of separation of the mixtures is regulated by the selection of interchangeable throttling plates 5 and 6 and turbulizer plate 7, which form the flow of the shared mixture.

 Plate 7 can be made with grooves or protrusions of various profiles - direct, sinusoidal, cross directions (not shown in Fig.).

 Plate 7 on the surface forming the flow of the mixture may have transverse grooves of various profiles - sawtooth, pterygoid, sinusoidal pulsating, and others, and may be prefabricated in design (not shown in Fig.).

 The membrane chamber element (Fig. 2) consists of a cylindrical body 20 with fittings 25 and 26 for the outlet of the spent mixture and permeate. In the housing 20, a drainage support 29 is installed in the form of a roll of one or more strips with depressions or protrusions on the lateral contacting surfaces, forming passage intersecting channels for draining the filtrate on the contact plane.

 A membrane 19 with a filter substrate 30 is laid on the filtering surface of the drainage support 29, the edges of which are sealed with the housing 20. The replaceable throttling ring 27 is fixed with the replaceable turbulizer plate 28 with the central channel through the gasket 22 by the cover 21, which is attached to the housing 20 by bolts 23. The fitting 24 into lid 21 serves to supply a shared mixture.

 The element works as follows: the mixture to be separated is fed through the nozzle 24 into the central channel of the turbulizer plate 28. Then, through the multi-grooves of the Archimedean spiral 33 of the base of the plate 28, the mixture passes under the membrane 19 through the dies of the throttle ring 27 into the annular cavity 32 of the housing 20 and then by the nozzle 25 on output.

 The permeate is filtered in the cavity 33 under the drainage support 29 and through the collector is discharged through the fitting 26.

 The mode of separation of the mixtures is regulated by the selection of the turbulizer plate 28 and the throttling ring 27, which form the flow of the mixture to be separated.

 Plate 28 on the surface forming the flow may have grooves and protrusions of various directions - a transverse, sinusoidal, cross, Archimedean spiral, etc. (not shown in Fig.).

Claims (3)

 1. MEMBRANE FLAT-CAMERA ELEMENT, comprising a housing, a turbulator, a drainage support with a substrate and a semi-permeable membrane located on its surface, collectors for introducing a shared mixture and withdrawing the filtrate and concentrate, characterized in that, in order to increase productivity and simplify the design, the drainage support is made detachable in the form of a package of identical plates or strips folded into a roll, on the contacting surfaces of which parallel protrusions or depressions are formed, forming passage channels for removal filtrate.  2. The element according to claim 1, characterized in that the protrusions or depressions on adjacent contacting surfaces are made with the opposite angle to the base of the plates or strips of the drainage support.  3. The element according to claim 2, characterized in that the turbulator is made in the form of a plate with a central hole for supplying the initial mixture and multi-grooves located on the side facing the membrane in the form of an Archimedes spiral.

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