RU86889U1 - TANGENTIAL FILTRATION MEMBRANE MODULE - Google Patents

Abstract

1. Membrane module tangential filtering, comprising a top cover with nozzles for supplying a filtered medium and a discharge of concentrate, a bottom cover with a nozzle for extracting a filtrate, side walls hermetically connected to the upper and lower covers, and placed in the space between the upper, lower covers and side walls folded membrane with drainage and flow distribution devices located between the membrane folds, characterized in that the module contains n flow distribution and n + 1 drainage devices well, the first and last membrane folds are hermetically connected to the inner surfaces of the side walls, the ends of the wave-like membrane together with the ends of the upper and lower covers and side walls are placed in the sealant layer, and the space between the top cover, flow distributors, side walls and the vertices of the membrane folds in the gap between the inlet and outlet nozzles of the top cover is sealed. ! 2. The membrane module according to claim 1, characterized in that the flow distributors, side walls and top cover are made of the same thermoplastic material, the flow distributors and side walls are connected to the top cover, forming a comb structure, by heating them to a melting temperature , the tops of the membrane tabs in the gap between the inlet and outlet nozzles of the upper cover are sealed with the material of the upper cover, flow distributors and side walls in the process heating them to the melting temperature. ! 3. The membrane module according to claims 1 and 2, characterized in that

Description

The invention relates to devices designed to separate liquid or gaseous media (for example, to purify water, air, blood separation by plasmapheresis, etc.) using folded-type membrane elements.

Closest to this utility model is a tangential filtration membrane module containing a top cover with nozzles for supplying a filtered medium and a concentrate outlet, a bottom cover with a filtrate outlet nozzle, side walls hermetically connected to the upper and lower covers, and a wave-like membrane with folds placed between the folds membranes with drainage and flow distribution devices (see patent RU 2047332, class B01D 63/14, publ. 10.11.1995). The disadvantages of the known device are the complexity of manufacture and insufficiently effective filtering.

The objective of the utility model is to eliminate these drawbacks. The technical result consists in simplifying the manufacture and improving the quality of the separation of media. The problem is solved, and the technical result is achieved by the fact that in the membrane module of tangential filtration, containing a top cover with nozzles for supplying a filtered medium and a discharge of concentrate, a bottom cover with a nozzle for extracting a filtrate, side walls hermetically connected to the upper and lower covers, and placed in the space between the upper and lower covers and side walls, a wave-like membrane with drainage and flow distributing devices placed between the membrane folds, wherein the module contains n flow-distributing and n + 1 drainage devices, the first and last membrane folds are hermetically connected to the inner surfaces of the side walls, the ends of the wave-like membrane together with the ends of the upper and lower covers and side walls are placed in the sealant layer, and the space between the upper cover and the flow-distributing devices, side walls and the vertices of the folds of the membrane in the gap between the inlet and outlet nozzles of the upper cover is sealed. The flow distributors, side walls and top cover are preferably made of the same thermoplastic material, the flow distributors and side walls are connected to the top cover, forming a comb structure, by heating them to the melting temperature, the tops of the membrane folds between the inlet and outlet nozzles of the upper the covers are sealed with the material of the top cover, flow distributing devices and side walls in the process of heating them to temperatures s melting. The flow-distributing and drainage devices can be made in the form of thin plates with a relief pattern applied on both sides of them, forming channels for the passage of the filtered medium and the removal of the filtrate. As a drainage or flow distribution device, you can also use a polymer mesh woven or knitted weave. As a membrane, a track membrane can be used. Polyolefins, for example, ethylene vinyl acetate, can be used as a material for the manufacture of flow distribution and drainage devices, side walls, upper and lower covers.

Figure 1 schematically shows a membrane module;

figure 2 is a section aa along the axis of the inlet pipe of the upper cover;

figure 3 is a section bb along the axis of the outlet pipe of the lower cover;

figure 4 shows a flow-distributing device with a relief pattern made on both sides thereof;

5 shows a drainage device with a relief pattern made on both sides thereof.

The membrane module consists of an upper cover 1 with a nozzle 2 for supplying a filtered mixture and a nozzle 3 for discharge of concentrate, side walls 4, a lower cover 5 with a nozzle 6 for extracting the filtrate and placed in the space between the upper 1 and lower 5 covers and side walls 4 of a wave-like membrane 7 with drainage 8 and flow distribution devices 9 placed between its folds. Moreover, the module contains n flow distribution and n + 1 drainage devices. The flow-distributing and drainage devices can be made in the form of thin plates with a relief pattern applied on both sides of them, forming channels for the passage of the filtered medium and the removal of the filtrate. As a drainage or flow distribution device, you can also use a polymer mesh woven or knitted weave. Polyolefins, for example, ethylene vinyl acetate, can be used as a material for the manufacture of flow distribution and drainage devices, side walls, upper and lower covers. The ends of the wave-shaped membrane 7 together with the ends of the upper 1 and lower 5 covers and side walls 4 are placed in the sealant layer 10, and the space 11 between the upper cover 1, the flow distributors 9, the side walls 4 and the vertices of the folds of the membrane 7 in the gap between the inlet 2 and output 3 nozzles of the top cover 1 is sealed. The first and last folds of the membrane 7 are hermetically connected to the inner surfaces of the side walls 4.

The membrane module operates as follows.

Filtered medium through the pipe 2 passes to the flow distributing devices 9 and using a relief pattern on the sides of the flow distributing devices 9 is evenly distributed and directed along and between the folds of the membrane 7. Passing between the folds of the membrane 7, part of the flow is filtered through the pores of the membrane 7 and the other part of the flow concentrating, it is discharged from the membrane module outward through the nozzle 3. The filtrate passing through the pores of the membrane 7 passes through relief patterns on the lateral surfaces of the drainage ments 8 is discharged outside through the pipe 6. The flow medium to be filtered between the upper cover 1 vertices membrane folds 7, bypassing potokoraspredelitelnye elements 11 prevents the sealant layer.

The proposed module has a relatively low cost while maintaining high quality filtering. The design allows to greatly simplify the manufacturing process, reducing the amount of marriage. Thus, the proposed device is a simple and reliable filter suitable for mass production.

Claims (7)

1. Membrane module tangential filtering, comprising a top cover with nozzles for supplying a filtered medium and a discharge of concentrate, a bottom cover with a nozzle for extracting a filtrate, side walls hermetically connected to the upper and lower covers, and placed in the space between the upper, lower covers and side walls folded membrane with drainage and flow distribution devices located between the membrane folds, characterized in that the module contains n flow distribution and n + 1 drainage devices well, the first and last membrane folds are hermetically connected to the inner surfaces of the side walls, the ends of the wave-like membrane together with the ends of the upper and lower covers and side walls are placed in the sealant layer, and the space between the top cover, flow distributors, side walls and the vertices of the membrane folds in the gap between the inlet and outlet nozzles of the top cover is sealed. 2. The membrane module according to claim 1, characterized in that the flow distributors, side walls and top cover are made of the same thermoplastic material, the flow distributors and side walls are connected to the top cover, forming a comb structure, by heating them to a melting temperature , the tops of the membrane tabs in the gap between the inlet and outlet nozzles of the upper cover are sealed with the material of the upper cover, flow distributors and side walls in the process heating them to the melting temperature. 3. The membrane module according to claims 1 and 2, characterized in that the flow distribution and drainage devices are made in the form of thin plates with a relief pattern deposited on both sides of them, forming channels for the passage of the filtered medium and drainage of the filtrate. 4. The membrane module according to claims 1 and 2, characterized in that a polymer mesh of woven or knitted weave is used as a drainage device. 5. The membrane module according to claims 1 and 2, characterized in that a polymer mesh of woven or knitted weaving is used as a flow distribution device. 6. The membrane module according to claims 1 and 2, characterized in that the track membrane is used as the membrane. 7. The membrane module according to claims 1 and 2, characterized in that polyolefins, for example ethylene vinyl acetate, are used as the material for the manufacture of flow distribution and drainage devices, side walls, upper and lower covers.