Fans after the dust collectors are not must for positive pressure system.

Just add the dust collector pressure losses in total system pressure drop

and size the blower accordingly. ■

Dear Sir,

If no fan is used, the pressure inside the silo, bin or flat storage will be above atmospheric,

in order to force the pneumatic convey air and sudden air releases through the filter.

The over pressure in the receiving volume will cause dust through possible leaks.

(especially important in flat storages)

In case a discharge vessel is using a minimum pressure as an indication of being empty, it will not switch to the next mode (or will wait longer) if the minimum pressure setting is lower than the lowest pressure in the receiving volume.

A fan can speed up this procedure by pre-evacuating.

When a fan has pre-evacuated the volume in the storage, the end pressure in that volume will be lower in case of air surges.

It will work without a fan, but with a fan the pressures can be controlled better around atmospheric.

( Do not forget safety valves)

success

teus ■

Added a blower result in a negative pressure in the bin of dust collecting ,so as to lead the air containing dust particle to the bin,then dust collector filtrate the air.

please browse:www.hugestone.com.cn ■