CN201358179Y - Electrodialyzer - Google Patents

Abstract

The utility model provides an electrodialyzer, which is composed of a membrane stack, a polar region and a pressing device. The membrane stack is composed of at least one set of a cation exchange membrane, a partition plate, an anion exchange membrane, A membrane pair composed of a separator, in which the separators are alternately placed between the anion and yang membranes to form a concentrated chamber and a dilute chamber, each side of the membrane pair is provided with a pole area composed of electrodes, and the polar water plate is connected to the adjacent membrane. separated. The utility model has the characteristics of reasonable structure, compactness, convenient use and the like.

Description

an electrodialyzer

technical field

The utility model relates to an electrodialyzer, which can be widely used in solution purification and waste water treatment.

Background technique

At present, the manufacturing technology of electrodialyzers is quite mature, especially the manufacturing technology of ion exchange membranes. However, due to the different uses of electrodialyzers, there are electrodialyzers with different structural contents, such as the ZL0121179.6 disclosed in the Chinese Patent Gazette. and ZL97204723.9 and other two utility model patented technologies, their structural composition generally has defects such as complex structure, bulky volume, high cost of use, and narrow use range.

Contents of the invention

The purpose of the utility model is to provide a reasonable structure, compact, easy to use electrodialyzer.

The purpose of this utility model can be achieved through the following scheme: it is made up of membrane stack, polar region and pressing device, and described membrane stack is made up of at least one group by a cation exchange membrane, a partition plate, an anion exchange Membrane and a separator composed of a membrane pair, in which the separators are alternately placed between the anion and yang membranes to form a thick and light chamber, and the two sides of the membrane pair are each equipped with a pole area composed of electrodes, and the polar water plate is used to connect with the phase. The adjacent membrane is separated. The membrane stack is composed of at least two sets of membrane pairs, and each set of membrane pairs is composed of a cation exchange membrane, a separator, an anion exchange membrane, a separator, and a cation exchange membrane, and a common electrode is arranged between the two sets of membrane pairs . The membrane stack is composed of three sets of membrane pairs, and each set of membrane pairs is composed of a cation exchange membrane, a separator, an anion exchange membrane, a separator, and a cation exchange membrane, and a common electrode is respectively arranged between the two membrane pairs. , and a clamping plate fixedly connected by a screw rod and a nut is arranged on the outer sides of the electrodes on both sides.

The utility model has the characteristics of reasonable structure, compactness, convenient use and the like.

Description of drawings

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

Fig. 2 is a schematic diagram of the working principle of the utility model

Detailed ways

Comparing Fig. 1, Fig. 2 can know that the utility model is mainly made up of membrane stack 1, polar region 2 and pressing device 3, and described membrane stack 1 is made up of at least one group by a cation exchange membrane 11, a partition plate 12 1, an anion exchange membrane 13, and a membrane pair composed of a separator 14, wherein the separators 12 and 14 are alternately placed between the cation exchange membrane 11 and the anion exchange membrane 13 to form a thick chamber and a dilute chamber. Pole regions 2 composed of electrodes 21 are provided on both sides, and are separated from adjacent ion exchange membranes 11 and 13 by pole water plates 22 . As shown in Fig. 1, the membrane stack 1 of the utility model has three groups of membrane pairs, and each group of membrane pairs is composed of a cation exchange membrane 11, a separator 12, an anion exchange membrane 13, a separator 14, and a cation exchange membrane. 11. A common electrode 23 is provided between each membrane pair, as shown in FIG. 2 . A clamping plate 33 fixedly connected by a screw 31 and a nut 32 is arranged outside the electrodes 21 on both sides of the membrane stack 1, and constitutes the clamping device 3 of the present invention. A water distribution pipe 42 is connected to the top and bottom of the membrane stack 1 through a water distribution flange 41 .

Claims (2)

1, a kind of electrodialyzer, is made up of membrane stack (1), polar region (2) and pressing device (3), it is characterized in that described membrane stack (1) is made up of at least one group by a cation exchange membrane ( 11), a separator (12), an anion exchange membrane (13), and a membrane pair composed of a separator (14), wherein the separators (12, 14) are alternately placed on the cation exchange membrane (11 ) and the anion exchange membrane (13) and form a concentrated and dilute chamber, each side of the membrane pair is provided with a polar region (2) composed of electrodes (21) and is separated from the adjacent membrane by a polar water plate (22) . 2. The electrodialyzer according to claim 1, characterized in that said membrane stack (1) is composed of at least two sets of membrane pairs, each set of membrane pairs consists of cation exchange membrane (11), separator (12) ), anion exchange membrane (13), separator (14), cation exchange membrane (11), and a common electrode (23) is arranged between the two sets of membrane pairs.

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