National Conveyors Company, Inc

Dense Phase Pneumatic Metal Chip Conveying
Dense Phase Metal Chip Transporter
Schematic Dense Phase Transporter for Metal Chips
Dense Phase Metal Chip Transporter
Metal Chips Dense Phase Transporter

Dense Phase Pneumatic Metal Chip Conveying System


In addition to dilute phase vacuum and pressure pneumatic metal chip conveying systems used for handling dry chips, National also supplies dense phase pneumatic conveying systems. This technology offers the advantage of being able to convey either wet or dry metal chips with equal effectiveness. Referring to the schematic shown above, chips from machining operations, filtration systems or other sources are stored in a surge hopper from which they are fed in batches of controlled volume through valve "A" into an unpressurized and empty chip transporter. Once the transporter is filled, the inlet and vent valves close and seal. Compressed air is then introduced into the upper area of the transporter and also through a fluidizing lance which extends into the lower section. Controlled fluidization allows the entire chip batch to be forced downward into the discharge (reducing) elbow without jamming or blockage. As metal chips are forced under pressure into the much smaller diameter of the elbow, they concentrate and form a dense slug of material which is pneumatically conveyed to a discharge point. Once the chip slug is discharged, a "line clear" signal is received, pressurized air supply shuts off, transporter inlet and vent valves open, and the transporter is once again ready to receive material.

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