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Pressure Conveying Systems |
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Pressure dilute / semi-dense phase conveying |
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 Perfect for conveying powder and granular bulk material. The bulk material is fed by means of a rotary airlock valve (drop-through valve with pick-up pan or blow-through valve). It is important to ensure appropriate valve venting. A blower package generates the pressure required for conveying. The bulk material is conveyed continuously and distributed to the respective receivers, tanks, or silos, via diverter valves. Adequately sized filter are required at product destination points. |
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Advantages |
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  Long conveying distances
High throughput rates
Ideal for systems with one feeding point and several delivery points
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Best for conveying |
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Flour, semolina, sugar, salt, PVC powder, or granules etc. |
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Pressure dense phase conveying |
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Gentle conveying of granules in low-velocity conveying systems with minimum abrasion and formation of ‘angel hair'. The high-pressure lock can be filled by sack feed, tank, silo, or scales. Using alternating pressure impulses, the product and air are introduced alternatively into the conveying pipe. Even with the high product charging, operating costs are extremely low due to the low air consumption. |
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Advantages |
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 Compact construction saves space
High operational safety with low control system costs
Can be used for high pressure differentials
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Best for conveying |
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Granular materials that need gentle conveying |
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Pressure-vessel dilute / semi-dense phase conveying |
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 Ideal for conveying granular / powder bulk materials that cannot be conveyed via airlocks due to abrasion. Highly abrasive products, or very high conveying rates use this system as well. The pressure vessel is filled from above using scales, tank, silos, or a sack feeding station. Then the pressure vessel is sealed pressure-tight and the required conveying pressure is applied. This comes either from a rotary piston blower or from the central compressed air source. An electronic self-optimizing control unit monitors and regulates the distribution of compressed air to the product and bypass. A new filling cycle can begin only once the empty state is signaled. Often, the emptying is monitored according to weight. |
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Advantages |
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Equipment wear kept to a minimum
High throughput rates
Conveying over long distances
Conveying of bulk materials with a wide range of particle densities |
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Best for conveying |
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Limestone, salt, minerals etc. |
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Pressure-vessel dense phase conveying |
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The pressure vessel can be filled by bag dump, tank, silo, or scales. An air cushion is forced into the conveying pipe between each product slug using a special conveying air feed device (Laval nozzle). Product distribution occurs via diverter valves to receivers designed for pressure conveying systems, and equipped with appropriately sized filters. |
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Extremely gentle conveying
Segregation-free conveying of mixtures
Low operating costs |
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Best for conveying |
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Heat-sensitive and fragile bulk materials at high rates over long distances |
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Some of the customers currently using Azo Equipment in India are: |
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For information on the complete manufacturing program of AZO, please contact us at azo@vedicsystems.com |
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