Vacuum trucks are specialized sanitation vehicles designed for collecting, transporting, and disposing of liquid waste such as sludge and sewage. They are widely used in urban sanitation, industrial wastewater treatment, petrochemical industries, and emergency flood control.
The core capabilities of a vacuum truck depend on its vacuum pump performance, tank volume, chassis configuration and functions (such as whether it includes high-pressure cleaning and whether it uses special materials (carbon steel or stainless steel)). Currently, the market offers engines meeting Euro 2, Euro 3, Euro 4, Euro 5, and Euro 6 emission standards, with vehicle volumes ranging from 2 to 33 cubic meters, and upgrades are moving towards intelligent, multi-functional, and solid-liquid separation capabilities.
Based on operating scenarios and load capacity, vacuum trucks can be categorized into three types: light-duty, medium-duty, and large. Small vacuum trucks commonly use Dongfeng/Sinotruk/Isuzu models with capacities of 3 to 5 cubic meters, using carbon steel tanks and vacuum pumps or water circulation pumps with a flow rate of 9 cubic meters per hour. Medium-duty vacuum trucks commonly use Foton, Dongfeng, Sinotruk, and Shaanxi Automobile models with capacities ranging from 6 to 15 cubic meters, using tanks... Made of carbon steel, these vacuum trucks use vacuum pumps or water circulation pumps with a flow rate of 12 or 15 cubic meters per hour. Large vacuum trucks have a capacity of 16 to 30 cubic meters, with a carbon steel suction tank. Large chassis are preferred from Dongfeng, Sinotruk, Shaanxi Automobile, or Jiefang brands, using vacuum pumps or water circulation pumps with a flow rate of 20 or 25 cubic meters per hour.
Vertical suction lift refers to the maximum vertical height from the ground to the suction inlet, directly affecting the ability to operate in deep sewer wells or septic tanks.
Cleaner vacuum trucks are generally equipped with a dual-pump system (high-pressure
cleaning pump + vacuum suction pump), but function switching is required during operation; they cannot be completely synchronized.
The tank material is mostly Q235 carbon steel (5–8mm thick), with stainless steel or steel-lined plastic options available for high-end models.
Detailed Analysis of Key Performance Parameters for Vacuum Suction Trucks
In addition to tank capacity and suction lift, the following technical specifications directly determine operational efficiency and reliability:
Vacuum Pump: Standard configurations typically feature Hangzhou Weilong, SK-series water-ring pumps, or oil-sealed vacuum pumps, offering a pumping speed of 97–98 L/s and a shaft power output of 5.5–10 kW;
Operating Pressure: Exceeding 8,500 Pa, ensuring rapid tank filling (≤ 5 minutes) and complete emptying (≤ 4 minutes);
Hydraulic System: Standard features include hydraulic rear-cover opening, hydraulic tank lifting and dumping, an anti-overflow valve, and an automatic pressure relief valve, thereby enhancing operational safety and facilitating convenient tank cleaning;
High-Pressure Cleaning Module: Operating pressure ranges from 16 to 24 MPa, equipped with a 60–80 meter high-pressure hose and a multi-nozzle reel, suitable for flushing the inner walls of pipelines and cleaning road surfaces.
