BHM (PAL™) AIR LOCK

The BHM "FLUID FLOW" PNU AIR LOCK (PAL™) is a unique devise designed and built to be used at the hopper discharge, replacing motorized rotary air locks. It passes solids between two different pressure environments, all in the absence of moving parts. The "air lock" is established by the mass discharge material in the inlet area of the BHM (PAL™) combined with the solids in the discharge area of the BHM (PAL™). In a static mode, the lock is merely filling up, backing up into the hopper until the air lick is fluidized. Upon fluidization, the mass becomes active, behaving much like a pan of boiling water. This activity caused the material to act as a fluid, seeking its own level. This causes the solids to flow over the discharge weir until the dust in the hopper has been depleted. The mechanism for fluidization is compressed air, introduced via the automatically controlled solenoid valve on the air supply line. The cycle may be an automatically "timed" cycle or it may be a cycle based on "demand" initiated by a level control in the hopper. The BHM (PAL™) can be installed directly on the discharge of the hopper or at the screw conveyor discharge on larger units.

Unique features of the BHM PNU Air Lock (PAL™)

• An absence of moving parts and abrasion surfaces.
• No motor
• No motor starter and disconnect
• No drive set
• No special fabrication
• Standard construction good to 800º F
• No high cost special seals
• No packings
• No bearings
• Simple Installation