CN203635080U

CN203635080U - Turbulence promoting device of outer penetrating tubular membrane

Info

Publication number: CN203635080U
Application number: CN201320607893.7U
Authority: CN
Inventors: 宣伯民
Original assignee: HANGZHOU YUANSHAN FOOD TECHNOLOGY Co Ltd
Current assignee: HANGZHOU YUANSHAN FOOD TECHNOLOGY Co Ltd
Priority date: 2013-09-29
Filing date: 2013-09-29
Publication date: 2014-06-11
Anticipated expiration: 2023-09-29

Abstract

The utility model discloses a turbulence promoting device of an outer penetrating tubular membrane, belongs to the technical field of pollution prevention of tubular membranes, and aims to overcome the disadvantage that a membrane surface in a tube of the outer penetrating tubular membrane easily has concentration polarization and surface pollution. The turbulence promoting device provided by the utility model comprises a membrane support and a membrane, the turbulence promoting device is provided with a core rod which is provided with multiple layers, each layer is provided with multiple wing pieces, and each layer of wing pieces are in central symmetry arrangement by taking the central axis of the core rod as a symmetrical shaft; the interval space area arranged between the adjacent wing pieces in the same layer is equal to or greater than the areas of the wing pieces, and the maximum range between outer edges of any two wing pieces is less than the diameter of an inner hole which is composed by the film. The turbulence promoting device provided by the utility model is suitable for the outer penetrating tubular membrane.

Description

The short rapid device of the formula of passing through inside tubular membrane

Technical field

The utility model relates to a kind of contamination preventing technology of tubular membrane, particularly relates to a kind of short rapid device of the formula tubular membrane of passing through inside.

Background technology

Film, is skim material, and its effect is in the time having certain motive force to be applied to the two sides of film, can material be separated according to the difference of the physicochemical properties of material.Because membrane separation technique has: can process various feed liquids, can obtain high-quality filtrate with lower cost; Separation process can continued operation; Do not need to add chemical substance; The advantages such as automaticity height and small volume.In the world, be no matter to water treatment or wastewater treatment, membrane separation technique is all widely used.In the separation process of film, in feed liquid, there is a large amount of solid particles and deliquescent organic matter, on the surface of film, have very soon the accumulation of filter cake or the formation of gel layer, make fenestra blocked, cause membrane flux sharply to decline, affect efficiency and the service life of membrane module.Due to the composition material of various films, design feature, the mode of separation etc. is had nothing in common with each other, and is not therefore suitable for the general method that solves various film pollution condition.Such as, the formula of the passing through inside tubular membrane that adopts often aspect drinking water treatment, the mode of separation is that former water is walked in pipe, penetrating fluid oozes out through rete, because the area of pipe theca interna is relatively little, easily occurs concentration polarization and surface contamination.At present, the processing mode of polluting for the pass through inside concentration polarization of formula tubular membrane and film is to adopt in film separation process, continue to increase the hydraulic pressure of former water and increase backwash number of times; Do like this, the former increases power consumption, and the latter affects production efficiency.

Summary of the invention

The purpose of this utility model is to provide a kind of short rapid device of the formula tubular membrane of passing through inside, and the pipe lining endothelium that overcomes the formula tubular membrane of passing through inside is prone to the deficiency of concentration polarization and surface contamination.

The utility model is achieved by following technical proposals.

The utility model comprises that film supports and film, is provided with core bar, multilayer is housed on described core bar, every one deck is equipped with multi-disc fin, and the described fin of every one deck arranges take the central axis of described core bar as symmetry axis, Central Symmetry; Clearance space area between the adjacent described fin of every one deck is equal to or greater than the diameter that ultimate range between area, any two described fins outsides of fin described in a slice is less than the endoporus that described film forms.Tubular membrane component is made up of the supporter that is tubular film and fit with it, and the supporter of general inner-appearing type is at the supporter of the inside and outside formula in the hole of pipe-shaped membrane outside the pipe at pipe-shaped membrane, and supporter need to have good water penetration and higher intensity.The technical program is to design for passing through inside formula tubular membrane specially, former water is walked in pipe, because the runner of tubular membrane is generally all larger, and less demanding for impurity content in former water, but also be usually used for processing the former water of high solids, therefore the inner surface of tubular membrane is more contaminated.Effect of the present utility model is the fluidised form in order to improve former water in tubular membrane pipe.Described core bar plays the effect of supporting described fin, described fin is located in the hole of tubular membrane in rows, allow former water current in flow process, be subject to stopping of described fin, must walk around described fin flows through from their clearance space, make former water current in turbulence state, and have high shear rates; Meanwhile, due to described fin high resilience, can stir water body with certain frequency, make former water current produce vibration.Such result, not only can impel the back-mixing that is trapped material in concentration boundary layer preferably, the thickness of attenuate concentration boundary layer, and also high shear rate also contributes to take away particle and the solute of film surface deposition, alleviates film and pollutes.

In the utility model, because the structure of the assembly of described core bar and described fin is more accurate, can can reach same effect consideration than being easier to manufacture and be loaded in described film from the angle of machine-building, the described fin number of every one deck is 4, and the dual-side angle of described fin is 30 °.In order to protect the outside damage of the described fin that the inner surface of described film is not loaded into, described fin should adopt softer material, and the material of the preferred described fin of this programme is plastics or rubber.

Against existing technologies, the beneficial effects of the utility model are:

Can effectively slow down the pollution level on film surface, extend the interval time of backwash, be conducive to boost productivity.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model, the A-A cut-away view that Fig. 2 is Fig. 1.In figure: 1, film supports, 2, film, 3, core bar, 4, fin.

The specific embodiment

Below in conjunction with accompanying drawing and the specific embodiment, the utility model will be further described.

Core bar 3 will be inserted in the hole of film 2 after loading onto fin 4, for the convenience of putting, not too loosening again, and the outermost end limit of fin 4 and the inwall of film 2 should have the gap of 0.6-1.0 millimeter; The outermost end limit of the fin 4 of same layer should be in the center take core bar 3 on the same circumference in the center of circle.

Claims

1. the short rapid device of the formula tubular membrane of passing through inside, comprise that film supports and film, it is characterized in that, be provided with core bar, multilayer is housed on described core bar, every one deck is equipped with multi-disc fin, the described fin of every one deck arranges take the central axis of described core bar as symmetry axis, Central Symmetry; Clearance space area between the adjacent described fin of every one deck is equal to or greater than the diameter that ultimate range between area, any two described fins outsides of fin described in a slice is less than the endoporus that described film forms.

2. the short rapid device of a kind of formula tubular membrane of passing through inside according to claim 1, is characterized in that, the described fin number of every one deck is 4, and the dual-side angle of described fin is 30 °.

3. the short rapid device of a kind of formula tubular membrane of passing through inside according to claim 1, is characterized in that, the material of described fin is plastics or rubber.