The LDV 2000 vacuum conveying system is the most basic and lowest priced vacuum system offered by Dynamic Air. It is best suited for vacuum conveying of materials where degradation or wear is not of a particular concern, but low initial cost is.

The LDV 2000 system is normally designed to vacuum convey at a higher air-to-solids ratio and a higher conveying line velocity than any of the other Dynamic Air vacuum systems. Its simple design has less moving parts, resulting in a lower investment cost. Most non-abrasive, fine, granular, low bulk density, fibrous and/or large light particle materials can be easily handled in the LDV 2000 system.

The LDV 2000 vacuum conveying system requires a minimum starting, or pickup, velocity of about 2,000 to 4,000 feet per minute. The convey-ing velocity then increases to a higher terminal velocity at the end of the system from about 6,000 to 9,000 feet per minute. Due to air pressure limitations, practical conveying distances should generally be limited to about 500 lineal feet.

Primary components in the system include a pickup nozzle at the beginning of the system; a method to control material flow; a vacuum conveying line with couplings and tubing bends; a vacuum filter/receiver; a secondary filter and a positive displacement blower. The positive displacement blower, which is used as the power source, produces vacuum levels to about 14 inches of mercury. For continuous conveying applications, a rotary airlock or optional gatelock hopper is installed at the end of the system.

All the air needed to convey the material is added at or near the vacuum pickup nozzle. The material is usually metered into the pickup nozzle by a volumetric feeder, such as a rotary airlock, and/or by controlling the air volume and pressure. The material is then mixed with conveying air and moves through the conveying line to the vacuum filter/receiver.