去除水中的硬度，对于防止锅炉或其他用水设备的腐蚀，保证其安全经济运行有着重要的意义。多年来国内全自动软化水设备主要以进口美国阿图祖公司及富来公司的多路阀为主，国内多路阀主要以旋转阀为主。进口多路阀均是顺流再生形式，顺流再生钠离子交换器存在盐耗大、出水不稳定的问题。且进口多路阀配件少，维修难度大。国产旋转式多路阀经长时间运行，磨损大，容易发生串水，造成出水不合格。
Removing the hardness of water is of great significance in preventing corrosion of boilers or other water consuming equipment and ensuring their safe and economical operation. For many years, domestic fully automatic softened water equipment has mainly relied on imported multi way valves from American companies Atuzu and Fulai, while domestic multi way valves are mainly rotary valves. The imported multi way valves are all in the form of downstream regeneration, and the downstream regeneration sodium ion exchanger has problems such as high salt consumption and unstable effluent. Moreover, there are few imported multi way valve accessories, making maintenance difficult. After long-term operation, domestic rotary multi way valves are prone to wear and tear, and are prone to water leakage, resulting in unqualified water output.
全自动软水设备采用强酸性阳离子树脂将原水中的钙、镁离子置换出去，经该设备流出的水而为硬度极低的软化水。其化学反应为：2RNa+Ca2+(Mg2)=R2Ca(Mg)+2Na+。当树脂吸附到一定量的钙、镁离子后必须进行再生-用饱和盐水浸泡树脂把树脂里的钙、镁离子等硬度置换出来，恢复树脂的软化交换能力，并将废液排出。其化学反应为：R2Ga=2RNa+Ca2+ 。整个再生过程包括：反洗-松动树脂层，吸盐慢洗-发生交换反应，冲洗（正洗）-将化学反应交换下来的钙、镁离子冲净，注水-为了下次再生
The fully automatic water softening equipment uses strong acidic cationic resin to replace calcium and magnesium ions in the raw water, and the water flowing out through the equipment becomes extremely low hardness softened water. The chemical reaction is: 2RNa+Ca2+(Mg2)=R2Ca (Mg)+2Na+. When the resin adsorbs a certain amount of calcium and magnesium ions, regeneration must be carried out - soak the resin in saturated salt water to replace the hardness of calcium and magnesium ions in the resin, restore the resin's softening and exchange ability, and discharge the waste liquid. Its chemical reaction is R2Ga=2RNa+Ca2+. The entire regeneration process includes: backwashing - loosening the resin layer, slow salt absorption washing - exchange reaction occurs, washing (washing) - flushing the calcium and magnesium ions exchanged from the chemical reaction, injecting water - for the next regeneration