lt is mostly used for dense phase high pressure transportation, usually with longer transportation distance andlarger transportation capacity than low pressure transportation.
Technical characteristics:
1 ) lt can be divided into upper - lead bin pump, side-out bin pump and lower - lead bin pump;The transportationforms are various and the selectivity is strong.
2 ) The scaling pressure of the system is high,which is commonly used in inert gas closed-loop circulationconveying system.
3 ) Long service life and low system operation and maintenance cost.

lt is suitable for medium and low pressure pneumatic conveying.Generally, bulk materials can be pneumatic conveyed by rotaryvalves.
Technical characteristics:
l ) the conveying pressure is between 1 and 3 bar,
2 ) multi-point feeding and multi-point discharging can be realized;

Different from the positive pressure conveying system，the negative pressure system can use asuction nozzle in an open normal temperature container to realize material conveying without raisingthe temperature of the 'material during conveying;
Technical characteristics:
l ) The system has no leakage of dust and gas and no temperature rise in the transported materials,which is especially suitable for hazardous materials.
2 ) The environment around the system is highly clean;