A truck vacuum pump creates negative pressure inside a tank, allowing it to suck up liquids, sludge, or dry materials. This technology is essential for a wide range of industries, including industrial cleaning, septic and wastewater services, oil and gas operations, and environmental cleanup.
Most truck vacuum pumps use positive displacement technology, which means they move a fixed volume of air with each rotation. This process creates a vacuum inside the tank, enabling efficient material handling. Without this critical component, vacuum trucks simply cannot perform their job.
Principle of Operations
Shaded blue areas indicate air pressure variations from intake to atmosphere discharge
Position 1: Incoming air is trapped between the impellers and the case, producing a vacuum in the application system. Simultaneously, air is discharged (right) from the vacuum blower.
Position 2: As the impeller passes the jet plenum, atmospheric air flows into the space between the impeller and the case. This cools the trapped air, aids impeller movement and reduces shock and power loss.
Position 3: The trapped air is then moved to the discharge flange (right). Backflow is reduced, resulting in lower discharge noise relative to conventional rotary vacuum blowers.