Air Supported Belt Conveyor

Energy saving

By using air support instead of roller support, ASBC make roller belt conveyor's rolling friction into the fluid friction, then greatly reducing the traction of the drive device and belt conveyor running resistance. In the same amount of delivery and delivery process, the power consumption can be saved 15 ~ 30% than the roller belt conveyor. The greater the amount of delivery, the longer the transport distance, the more significant energy savings.

Light weight, high stiffness

As the air chamber with box-shaped cross-section, the vertical direction of ASBC can withstand greater bending moment and torque, torsional bending performance is much higher than the roller belt conveyor, then ensure a reliable strength guarantee for large volume transport of ASBC. At the same time, ASBC adopts only 2 ~ 3 pairs of transition rollers, which will make the machine run more reliable.

Long life

ASBC to facilitate the full range of protective seals, sealing effect is much higher than the roller belt conveyor. Not deviation, no dust, low noise. Truly realized a clean and environmentally friendly transport. After using air support instead of the roller support, running resistance and tape tension greatly reduced, so there are less wear for the belt , not rubbing, not sprinkle material, not tear, combined with air support on the tape with cooling effect, as a result the belt life ratio is extended 2 to 4 times than belt conveyor, and the service life of the equipment is 2 to 4 times of the belt conveyor.

Low maintenance costs

ASBC with air support instead of the roller support, fewer rotating parts, less accident points, reliability, little wear and tear, thus greatly reducing maintenance costs. It is proven that ASBC is less than 75 to 80% of the maintenance cost of the roller belt conveyor.

Reliability

Roller belt conveyor running in a wave forward operation, so it is to make material bumps serious, tape deviation and wear large. ASBC completely overcome the above shortcomings, running very smooth, not bumpy, do not sprinkle material, do not run away, will not automatically sort the particle size of the bulk material, especially suitable for the preparation of the proportion of the preparation of mixed bulk material.

Less start -up power, starting under fully loaded conditions

Roller belt conveyor start-up power is large, generally about 1.8 to 2.5 times of operating power, and difficult to achieve full line full load start. ASBC as long as form the stable and even air cushion layer, the drive motor starting power and running power difference is very small, full load and no need to take any auxiliary measures can be easily started directly.

High loading capacity

The best operating speed of ASBC is 3 ~ 4m / s, the minimum operating speed of 0.8m / s, up to 12m / s, the maximum operating speed is 12m / s. So it can greatly improve the transport capacity, coupled with its large load section, good stability. In the same model of conveyor, ASBC more than the roller belt conveyor capacity increased by 10% to 15%. Transport effects and economic benefits are very significant.

Easy sealing, less pollution

ASBC was equipped with a closed air chamber along the machine, which can be fully sealed, then to make the installation of protective cover and safety facilities easily, and to make the installation of closed transport and easy install dust vacuum packs well, and also to reduce pollution, reduce noise, clean the environment, to achieve environment-friendly produce.

The Innovation of Design Theory

Replace Fan-shaped air flow theory with advanced water wave air flow theory which has the following advantage:

• Acquire better air cushion uniform stability;
• Make conversion between static and dynamic pressure of the gas more scientific and reasonable;
• Greatly improve the uniform stability of the air cushion;
• More comprehensive consideration of many factors influence the formation of the air cushion layer;
• Reflect the forming air cushion mechanism and operation condition;
• New basis theoretical for calculation about gas consumption, wind, air pressure, air cushion thickness and other design parameters;
• New approach to air orifice arrangement;
• Comprehensive solution and effective technical measures for the first and second generation of air-cushion belt conveyor problems;
• Reliable technology guarantee for successful development of the third-generation air-cushion belt conveyor.

The Innovation of air hole design

Replace the orifice port parallel arrangement in the first--generation ASBC with the five-point throttle arrangement.

• The air hole row number is odd;
• Use the center line of arc-shaped groove at longitudinal direction as center line of symmetry;
• Symmetrical layout;
• Diameter of air hole where a central symmetry to both sides will be gradually reduced;
• Adapted to the symmetric variation of the pressure and the materials belt bending stress.

• Increase loading and overloading of air cushion layer;
• Adapt to operation of air cushion transport;
• Ensure the uniform stability of the air cushion, stable and reliable operation;
• Strong overloading capacity;
• Easily Starting under fully loaded conditions.

The Innovation of Design Methods

Replace First Groove Angle design with Second Groove Angle.

Radius of the circular arc to upper arc-shaped groove by First Groove Angle, then modify structure by Second Groove Angle, increases the loading section , not only increases the loading capacity of the upper arc-shaped groove, but also drop upper arc-shaped groove edge 3-8mm, so prevent the belt edge friction and make belt life long 3-4 times.

The Innovation of Air Chamber Structure

Replace rectangular cross section air chamber with full symmetry air chamber (the air chamber combinated with arc, then bended into full symmetry air chamber).

Main Innovation for air chamber structure and air chamber section design, so greatly reducing the cyclone eddy in air chamber, then stabilized the air pressure.

Air chamber structure: Special shape external flange connection each two air chambers, “Maze” type spile connection each two arc-shaped grooves and use sealant to seal . Good sealing, prevent for leakage air when connection part of air chambers; Offset scalability caused by difference temperature, prevent for distortion and arching of air chamber.

Section shape of air chamber: Use the air chamber section which combination with good for air flow and reduce cyclone vortex and broken-line to Frictional Drag and arc.So good stabilizing effect, small frictional drag loss , less cyclone eddy, strong structure rigid,good torsional and flexural, easy for manufacturing and assembly.

Compared with the first and second generation ASBC, the transverse size of air chamber decreased by 10% ~ 15%, air consumption decreased by 15 ~ 20%, voltage regulator effect increased by 20 ~ 25%.

The Innovation of Air Source System

Use wind split device as new key technologies,to ensure uniform stability of air cushion. Air source system of the first-generation ASBC often cause airflow interference and cyclone eddy, and frictional drag loss larger. And matched-calculation of air source is not good enough, also use general centrifugal fan with model 9-19,9-26,4-68, CQ etc, cant match with the operation of ASBC, Much higher air pressure and too smaller air amount, or Much lower air pressure and too much air amount, then cause stability of air cushion is too bad, not good operating.

Wind split device not only can be quantitative, but adjusted air pressure as required.

According to material nature(bulk density, moisture degree etc),particle size, loading capacity, conveying speed, working environment etc,we have developed mathematical model for matched wind pressure and amount, also use new type fan with model 5-48,5-50,7-36,6-41,6-27 etc., thereby greatly improve technology performance of ASBC.

The Innovation of material cleaning system

Design storage material device for spills in air chamber, solve problem of the spills in air cushion space. During longer operation of the first and second generation ASBC, cause the spills and then friction between belt with arc-shaped groove, affecting the stability of the air cushion. Sometimes, even block the air holes.

For preventing the fine material go into the air cushion space: Firstly, add guard; Secondly, use new cleaner or spring cleaner and weight type scraper cleaner, or add a few groups of Nonloaded Cleaner; Thirdly also the main innovation is adding storage material device from the discharge place 3~5 meters. When the belt go through storage material device, the spills will be automatically pres-sued into storage device by air cushion. So make long service life of belt and arc-shaped groove and improve the operation effect.

The Innovation of air hole size

Use new design of air hole size: use long hole or appropriately increase hole size as air hole on the row of centerline, and the hole located at symmetrical two rows side of centerline also adjust the distance of rows and appropriately increase hole size, so increase loading capacity 15-20% compared with second-generation ASBC; easily starting under fully loaded conditions by original driven power, and energy saving 5-20% compared with original model ASBC, very good for large loading capacity.

The Innovation for Groove Angel of Arc-shaped groove

Increase the groove angel: the third-generation ASBC is a deep trough and large loading capacity belt conveyor, under the condition of same specification and model ASBC, compared with original model, groove angle increase 1~3 degrees, loading basal area increase 5 ~ 12%, so capacity can be increased 5% to 12%, starting under fully loaded conditions when driving power will be same or increase only 5%. Also energy-saving 5 ~ 10% compared with the second-generation ASBC, very good for large loading capacity.

Design Theory Innovative

Replace Fan-shaped air flow theory with advanced water wave air flow theory to acquire better air cushion uniform stability.

Air Source System Innovative

Initial additional sub-air steaming device to both sub-air and diverse flow reasonably and Reduce the loss of airflow resistance along the way. Solving the longitudinal  stability problem.

Orifice Port Place Innovation

Replace the orifice port parallel arrangement with the five-point throttle arrangement, increase the carrying capacity of air cushion layer.

Innovative material clearing equipment

Add new emptying and storing material devices, solving the material clamping problem.

Design Methods Innovation

Replace the Time slot Agle Design with the second slot Angle Design to acquire scientific Air tank structure, to overcome tape sidewipe phenomenon,improve belt life.

Orifice aperture Innovation

For large capacity air cushion machine, need adjusted the orifice aperture of longitudinal center line, using the square orifice layout.

Air Tank Structure Innovation

replace the rectangular cross-section with broken line and arc combination for the gas tank, in order to reduced air consumption and enhance stabilized voltage effect.

Air Chamber plate Groove Innovative

Increase the upper plate groove angle1-3 degree, improve capacity.