RU2010593C1 - Membrane tubular element - Google Patents

Abstract

FIELD: cleaning equipment. SUBSTANCE: membrane tubular element has body, supporting framework, throttling rings, vortex generator, drain device with backing and semipermeable membrane, collectors for injection of separated mixture and withdrawal of filtrate and concentrate. Vortex generator is manufactured in the form of bushing with grooves in inner cylindrical surface and is installed with clearance under membrane shutting drain device assembled on supporting framework from washers having protrusions of recesses on their face surfaces which form crossing conduits to take off filtrate. Throttling rings are positioned on collectors of input of separated mixture and withdrawal of filtrate. EFFECT: simplified design, improved efficiency. 2 cl, 3 dwg

Description

 The invention relates to designs of membrane elements of a tubular type and can be used in food, pharmaceutical, chemical and other industries.

 Known membrane element consisting of a tubular porous base with a Central channel. On the surface of the porous metal-ceramic base, turbulizing channels are made in the form of multi-thread screw threads. A semi-permeable membrane is located on the surface of the turbulator and repeats its shape. In this case, the element is inserted into the shell and placed in the housing with the inlet of the initial mixture and the outlet for permeate and concentrate.

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

 The disadvantages of such tubular elements are all the disadvantages of the porous tubular supports used: 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 flushing and repair, the increase in hydraulic resistance with an increase in their strength, depending from the geometric dimensions and density of the material, a limited selection of the latter.

 The purpose of the invention is to increase the separation efficiency.

 This is achieved by the fact that the design is equipped with a supporting frame and throttling rings, the turbulator is made in the form of a sleeve with grooves on the inner cylindrical surface and is installed with a gap above the semipermeable membrane covering the drainage device assembled on the supporting frame from identical washers, on the end surfaces of which the protrusions are made or depressions forming intersecting passage channels (dies) between them along the plane of contact of the latter to drain the filtrate, and throttling rings are located on and collectors for introducing a shared mixture and for withdrawing a concentrate. The passage channels of the drainage device are directed at an angle to the radius of the washers, and adjacent washers with contacting surfaces between them form channels with an opposite angle of inclination to the radius of the washers. The washers that make up the drainage device can be made of various materials: metal, ceramics, glass, plastics and others.

 Here, the hydraulic resistance and throughput (live section) are precisely calculated, its uniformity over the entire drainage area is achieved. The tubular membrane element is easily and quickly disassembled and assembled, which is convenient during operation.

 The design uses interchangeable throttling rings and a turbulence sleeve, which makes it possible to change the operating mode of the element.

 The device is illustrated by drawings.

 In FIG. 1 shows a membrane element tubular, a longitudinal section; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 the end face of the washer in contact with the washer visible in FIG. 2. Lines 18 on the ends of the washers show the protrusions or depressions with a direction at an angle to the radius of these washers.

 The tubular membrane element consists of a support frame 1 with fittings 13 and 14 for the exit of the spent mixture and permeate. Washers 3 with protrusions or depressions 18 are installed on the supporting frame 1 on end contacting surfaces that form passage channels (dies) with each other, which are clamped by a plug 4 secured by a bolt 10. On the filter surface of the drainage device formed by washers 3 along the outer diameter with the surfaces plugs 4 and frame 1, a membrane layer is applied or a sheet membrane 15 is glued with a filter substrate 16. The throttling ring 5 overlaps the annular channel 19 in the frame 1 to withdraw the spent mixture. A turbulizer interchangeable sleeve 7 is mounted on the ring 5 through the gasket 9, fixed on the other side through the gasket 8 and the throttling ring 6 on the plug 4. The structure is hermetically closed and fixed by the casing 2 through the gasket 9 with bolts 11. The fitting 12 on the casing 2 serves to enter a shared mixture.

 Element membrane tubular works as follows.

 The mixture to be separated is fed through the nozzle 12 into the cavity 20 of the casing-shell 2. Through the dies of the throttling ring 6, the mixture passes through the screw channels 17 of the turbulence sleeve 7, in contact with the membrane 15, through the dies of the throttling ring 5 into the annular cavity 19 and then through the fitting 13 exit.

 The permeate is filtered in the cavity 21 of the drainage device, then the collector 22 of the support frame 1 exits through the fitting 14.

 The separation mode of the mixtures is regulated by the selection of interchangeable throttling rings 5 and 6 of the turbulence sleeve 7. Alternatively, the tubular membrane element can be made with a membrane on the inner filtering surface of the drainage device — a pack of washers (not shown in FIG.). Washers as elements of a drainage device in structures may have protrusions on the external or internal profiles for fixing in the housing or on the shaft with the formation of passage cavities (not shown in Fig.). Replaceable turbulence sleeve 7, which serves to form a turbulent flow of the mixture, may have parallel grooves or protrusions of various profiles of direct longitudinal or spiral directions on the inner or outer surfaces, respectively, for options with the location of the membrane on the outer or inner surfaces of the drainage device.

 Alternatively, the turbulator bush on the surface forming the mixture flow may have only transverse grooves or annular protrusions of various profiles — sawtooth, pterygoid, sinusoidal pulsating, and others (not shown in FIG.).

 Replaceable turbulence sleeve may be a team of individual bushings (not shown in Fig.).

 (56) Copyright certificate of the USSR N 1430054, cl. B 01 D 63/06, 1986.

Claims (2)

 1. A MEMBRANE TUBULAR ELEMENT, comprising a housing, a turbulator, a drainage device with a substrate and a semi-permeable membrane located on its surface, collectors for introducing the mixture to be separated and for extracting the filtrate and concentrate, characterized in that, in order to increase the separation efficiency, it is equipped with a support frame and throttling rings, the turbulator is made in the form of a sleeve with grooves on the inner cylindrical surface and is installed with a gap above the semi-permeable membrane covering the drainage device annoe on the supporting frame of identical washers on the end surfaces are provided with protrusions or depressions, defining an intersecting and communicating channels for filtrate discharge and the throttle ring disposed on the collectors of input mixture to be separated and a concentrate output.  2. The element according to claim 1, characterized in that the passage channels of the drainage device are directed at an angle to the radius of the washers, and adjacent washers with contacting surfaces form channels with an opposite angle to the radius of the washers.

Images