软化水设备，顾名思义即降低水硬度的设备，主要除祛水中的钙、镁离子，软化水设备在软化水的过程中，不能降低水中的总含盐量，可以用于空调等系统的补给水的软化以及生活用水的处理等。全自动钠离子交换器采用离子交换原理，去除水中的钙、镁等结垢离子。当含有硬度离子的原水通过交换器内树脂层时，水中的钙、镁离子便与树脂吸附的 钠离子发生置换，树脂吸附了钙、镁离子而钠离子进入水中，这样从交换器内流出的水就是去掉了硬度的软化水。
Softening water equipment, as its name implies, is a device to reduce water hardness. It mainly removes calcium and magnesium ions from water. In the process of softening water, the softening water equipment can not reduce the total salt content in water. It can be used for softening the recharge water of air conditioning systems and the treatment of domestic water. The automatic sodium ion exchanger adopts the ion exchange principle to remove scaling ions such as calcium and magnesium in water. When the raw water containing hardness ions passes through the resin layer in the exchanger, the calcium and magnesium ions in the water will be replaced by the sodium ions adsorbed by the resin. The resin adsorbs calcium and magnesium ions and sodium ions enter the water, so the water flowing out from the exchanger is the softened water with hardness removed.