Tank vehicle e.g. milk pick-up truck, has unit creating depression in tank and air compressor circuit, and ejector including one pipe communicating with interior of tank and another pipe communicating with compressor circuit

摘要

The vehicle has a unit for creating a depression in a tank (2) and an air compressor circuit (8). An ejector (6) includes a pipe (3) for communicating with the interior of the tank and a pipe (7) for communicating with the air compressor circuit. A pressure sensor (4) mounted on the pipe (3) controls the level of depression inside the tank. A check valve (5) prevents air from entering inside of the tank.