给锅内加药(磷酸三钠、亚硫酸钠等)是锅炉防垢防腐的辅助措施,但也是水处理中必不可少的工作。常用的加药方法有:活塞泵注入式、高压加药式、低压加药式,对小型锅炉而言尚无统一的方式。笔者改进的加药器适用于各类工业 To the pot dosing (trisodium phosphate, sodium sulfite, etc.) is the boiler anti-scaling anti-corrosion measures, but also essential for water treatment work. Commonly used dosing methods are: piston pump injection, high-pressure dosing, low-pressure dosing, there is no uniform way for small boilers. I improve the drug device for all types of industry