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Pneumatic Conveyance Device

Stage: Development

The Pneumatic Conveyance Device is capable of dislodging, capturing, and conveying solid material, wet or dry, from a depth of 70+ feet, while discharging through a 100+ foot conveyance hose.  The device was developed to remove water and solid material from the annular space between the tank and line of a buried, double-hulled tank.  The device relies on pneumatic “push” technology rather than the “suction” technology that has been traditionally used in pneumatic conveyance devices.



While suction devices create high vacuum at the expense of high air consumption, this device utilizes a different design which creates a significantly stronger “push” on material and better material conveyance (at the expense of reduced suction).  The advantage of this device over similar suction devices is they are limited to 25 feet.  

The primary component of the system is a pneumatic conveyance nozzle.  The system was tested and successfully removed a mixture of sand, rock, wet sand, and water from a barrel to a collection tank elevated 70 feet above the barrel.  Additionally, the system was attached to a scarifying tool, and performance tests were conducted on a cured mixture of plaster, sand, and aggregate, to simulate the hardest, anticipated material that might be encountered.  The suction port of the nozzle was blocked sporadically, but a port valve at the discharge end of the conveyance hose can reverse the flow temporarily to free the blockage.

Benefits

  • superior lifting capability to 70+ feet
  • simple construction with no moving parts
  • lower air consumption than vacuum devices