CN201358179Y - Electrodialyzer - Google Patents

Abstract

The utility model provides an electrodialyzer which consists of a membrane stack, polar zones and a pressing device. The membrane stack is formed by at least one group of membrane pairs consisting of a cation exchange membrane, a clapboard, an anion exchange membrane and a clapboard, wherein the clapboards are respectively and alternately placed between the anion exchange membrane and the cation exchange membrane to form a thick chamber and a thin chamber, and two sides of the membrane pairs are respectively provided with the polar zones formed by electrodes and a polar water board is used for separating the adjacent membranes. The electrodialyzer is characterized by reasonable and compact structure, convenient use and the like.

Description

A kind of electrodialyzer

Technical field

The utility model relates to a kind of electrodialyzer, but the purification of widespread use solution and wastewater treatment etc.

Background technology

The suitable maturation of manufacturing technology of present electrodialyzer, especially the manufacturing technology of ion-exchange membrane, but because the purposes difference of electrodialyzer, and the electrodialyzer of different structure content is arranged, as two utility model patent technology such as disclosed ZL0121179.6 and ZL97204723.9 on the Chinese patent communique, their structure is formed ubiquity and complex structure, and is bulky, the use cost height, defective such as use range is narrower.

Summary of the invention

The purpose of this utility model just provides a kind of electrodialyzer rational in infrastructure, compact, easy to use.

The purpose of this utility model can realize by following scheme: it is made up of membrane stack, polar region and hold-down gear, described membrane stack by at least one group of film of forming by a cationic exchange membrane, dividing plate, anion-exchange membrane, dividing plate to constituting, its median septum alternately is placed between the negative and positive film respectively and constitutes dense, light chamber, the right both sides of film respectively be provided with the polar region that constitutes by electrode and with utmost point water plate and adjacent membranes every putting.To constituting, every group of right formation of film is followed successively by cationic exchange membrane, dividing plate, anion-exchange membrane, dividing plate, cationic exchange membrane to described membrane stack by at least two group films, two groups of films between be provided with a common electrode.Described membrane stack by three groups of films to constituting, every group of right formation of film is followed successively by cationic exchange membrane, dividing plate, anion-exchange membrane, dividing plate, cationic exchange membrane, two or two films between respectively be provided with a common electrode, and respectively be provided with a clamping piece that is connected by screw rod, nut in the outside of its two lateral electrode.

The utlity model has characteristics such as rational in infrastructure, compact, easy to use.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a principle of work synoptic diagram of the present utility model

Embodiment

Contrast Fig. 1, Fig. 2 are as can be known, the utility model mainly is made up of membrane stack 1, polar region 2 and hold-down gear 3, described membrane stack 1 by at least one group by a cationic exchange membrane 11, dividing plate 12, anion-exchange membrane 13, the film that dividing plate 14 is formed to constituting, its median septum 12,14 alternately is placed between cationic exchange membrane 11 and the anion-exchange membrane 13 respectively and constitutes dense, light chamber, the right both sides of film respectively be provided with the polar region that constitutes by electrode 21 2 and with utmost point water plate 22 and adjacent ions exchange membrane 11,13 every putting.Shown in Figure 1, described membrane stack 1 of the present utility model has three groups of films to constituting, every group of right formation of film is followed successively by cationic exchange membrane 11, dividing plate 12, anion-exchange membrane 13, dividing plate 14, cationic exchange membrane 11, every group of film between be provided with a common electrode 23, see shown in the accompanying drawing 2.Respectively be provided with one by screw rod 31 in the outside of 1 liang of lateral electrode 21 of membrane stack, the clamping piece 33 that nut 32 is connected, and constitute gripping unit 3 of the present utility model.On membrane stack 1 and below by water distribution flange 41, be connected with water distributing pipe 42.

Claims (2)

1, a kind of electrodialyzer, form by membrane stack (1), polar region (2) and hold-down gear (3), it is characterized in that described membrane stack (1) by at least one group of film of forming by a cationic exchange membrane (11), a dividing plate (12), an anion-exchange membrane (13), a dividing plate (14) to constituting, its median septum (12,14) alternately is placed between cationic exchange membrane (11) and the anion-exchange membrane (13) respectively and constitutes dense, light chamber, the right both sides of film respectively be provided with the polar region (2) that constitutes by electrode (21) and with utmost point water plate (22) and adjacent membranes every putting.

2, electrodialyzer according to claim 1, it is characterized in that described membrane stack (1) by at least two group films to constituting, every group of right formation of film is followed successively by cationic exchange membrane (11), dividing plate (12), anion-exchange membrane (13), dividing plate (14), cationic exchange membrane (11), two groups of films between be provided with a common electrode (23).

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