离子交换器（水处理设备）是用于降低水中的硬度。生水由上而下通过交换器进行软水，水中含苞欲放有的镁、钙、阳离子与水交换剂的钠离子互相交换；生水被软化成为含极少的钙、镁、盐类的水（称为软水），可用于锅炉给水及一些工业用水。由于钠离子在水中有很大的溶解性。不会在锅炉内部结成硬垢，并且容易排除。进入钠离子交换器的水。应经澄清过滤处理，基本上不含有悬浮物。经交换器软化后。其剩余硬度不超过0.03毫克当量/升。
   The exchanging device is for reducing the hardnes of hard water. Raw water goes through the exchanger from top to bottom, to be softened by the sodium iomexchanger inside the device. The positve ions of magneslum and calcium are exchanged with that of sodium. Then the raw water becomes soft water contiaing very few ions of magnesium and calcium. The soft water can be used for feeding water of boiler and for some hard sediment in the boiler and can be easily removed. Raw water shall be filtered and settled with almost on suspended before coming into the lonechaging device. After being softened in the device, the water shardness shall be less than 0.03mg equiwalent/1. 


外形结构参数变化恕不另行通知，欢迎来函。