How does the tooth rake bar screen become the "first line of defense" for sewage treatment?

In the sewage treatment system, the tooth rake bar screen has become an important device for intercepting suspended impurities due to its unique structure and efficient solid-liquid separation ability. The tooth rake bar screen is made of nylon or stainless steel and is arranged on the chain shaft in a certain order to form a closed ring chain structure. Driven by the sprocket, the entire set of rake chains circulates from bottom to top along the preset track. When the sewage flows through the screen, impurities such as branches, plastics, and fibers are intercepted and transported to the operating platform with the movement of the rake chain, and finally automatically removed by the rotation of the rake teeth.

In the municipal sewage treatment stage, the coarse screen mode can effectively intercept large-volume debris such as beverage bottles and plastic bags; while in the fine treatment stage, the fine screen configuration can separate small-volume pollutants. This graded filtration feature not only protects the subsequent water pump unit from entanglement damage, but also significantly reduces the load pressure of treatment units such as biochemical pools and sedimentation tanks.

The equipment can be customized in width, installation angle and screen gap to adapt to different channel depths and flow requirements. The rake teeth are made of stainless steel, nylon or ABS engineering plastics, and the frame is mostly made of anti-corrosion materials with strong corrosion resistance. The tooth rake screen has become a key equipment for sewage pretreatment due to its efficient solid-liquid separation ability and flexible adaptability.