Via pressure blowing or vacuum suction, pneumatic conveying systems can be divided as pressure system and vacuum system.
Pressure system is more common is higher conveying capacity and longer conveying distance as there is higher pressure source available while vacuum system is only up to max. 1 bar pressure drop.
Pickup device for pressure system could be an airlock (rotary valve station), a blow tank (pressure vessel), a dual flap or dual butterfly valves or an venturi ejector, depending on actual plant application.
Advantages of Pressure Conveying System 正压输送的优势
Disadvantages of Pressure Conveying System 正压输送的劣势