Device for preparing purified water

Abstract

The invention discloses a device for preparing purified water. The device comprises a first ion-exchange resin tower and a second ion-exchange resin tower, wherein two water inlets are respectively formed at the tops of the two ion-exchange resin towers; two water outlets are respectively formed at the bottoms of the two ion-exchange resin towers; the water outlet and the water inlet of the first ion-exchange resin tower are respectively and serially connected with the water inlet and the water outlet of the second ion-exchange resin tower. The device disclosed by the invention is simple in structure and easy to realize; by serially connecting the two ion-exchange resin towers, the service life of purified water and resin after the ion-exchange resin towers are regenerated is prolonged, and recycled acid and alkali materials are effectively saved; the water quality of prepared purified water is high; meanwhile, the device has the characteristics of great contacting area of water and resin, high mass transfer efficiency of filler, uniform distribution of liquid in the towers and the like, and is worthy of being widely popularized.

Description

technical field [0001] The invention relates to a pure water making device. Background technique [0002] The ion exchange resin tower mainly uses the ion exchange resin in the tower to make pure water. Ion exchange resin is a kind of polymer material with ion exchange function, which can be divided into cation exchange resin and anion exchange resin. In the solution, it can exchange its own ion with the same ion in the solution. As the ion exchange continues, the resin will gradually fail, and the water quality will also decline. Wash the ion exchange resin with an appropriate concentration of inorganic acid or alkali, and the ion exchange resin can be regenerated, thereby restoring the original ion exchange capacity. [0003] In the prior art, pure water devices such as figure 2 As shown, the two ion exchange resin towers are connected in parallel to make pure water. This device has the following disadvantages. First, the two ion exchange resin towers are connected in p...

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Problems solved by technology

[0003] In the prior art, pure water devices such as figure 2 As shown, the two ion exchange resin towers are connected in parallel to make pure water. This device has the following disadvantages. First, the two ion exchange resin towers are connected in parallel. When the water quality drops, the two ion exchange resin towers must be simultaneously The tower is regenerated, thereby wasting a large amount of acid and alkali materials used for regeneration, and at the same time increases the probability of resin fragmentation, which affects the service life of the resin; second, the two ion exchange resin towers are static, so that the water and ion exchange resin are effective. The contact area is small, and the ions in the water enter the resin through their own gravity for ion exchange. The exchange speed is slow, which affects the exchange process and reduces the work efficiency. In addition, there is no device in the two ion exchange resin towers to avoid poor liquid distribution. As a result, the mass transfer efficiency of the packing is low

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