The pipeline mixer produced by our company is a rational equipment for instantaneous mixing of water with coagulants, coagulants, and disinfectants. It has the characteristics of efficient mixing, drug saving, and small equipment. It is composed of two sets of mixing unit components. Without the need for external power, the water flow through the mixer produces three effects: diversion, cross mixing, and reverse swirl. The mixing efficiency reaches 90-95%. Efficient mixing device for various water treatment agents used in water supply and drainage engineering in pipelines.