The special configuration is: faeces viewing window (this function overcomes the problem of not being able to see clearly after a long time with viewing faeces window), 1 artesian mouth, cleaning device, 1 5m fecal suction pipe, boom seat, vacuum pump, water and oil Separator, anti-overflow valve. The rear door is hydraulic with self-unloading function, and the sewage outlet is opened by the cylinder. Equipped with a high-power vacuum pump, the work efficiency is also excellent, and the vertical vacuum can reach 7 meters.