Airsweep system

By co-operating with Myrlen®, Inc., one of the most renowned companies working on flow systems in storage silos and technologies, we will be able to solve your problem.

Current method for dealing with the unwanted effects of non-flowing material.

The technology of clearing out bulk material using the Myrlen® pulsed air jet system has proved itself over the years as a certified way of enabling hard-to-flow bulk materials to flow safely and reliably. The air jets system is basically a system of pulsed bursts of air. This system combines the strength of high-pressure air with a system of controlled dosing. This eliminates the possibility of non-flowing material being formed on the inside walls of the storage silo. The system of pulsed air jets uses a smaller amount of air than churning, using an air cannon, fluidiser, churning jets or pneumatic vibrators. The difference compared with other air systems is that the pulsed jets activate the surface of the material to a depth of approx. 25 mm with every pulse.

Time is money – and problems with material flow can cost both!

Contact our sales centre and we will provide you with a price proposal for a Myrlen® pulsed air jet system, and/or further technical information.

Basic flow requirements are ensured by a system of pulsed bursts. The jets are created by short pulses of compressed air parallel to the walls inside the storage silo or other system. The high speed VA - 51 (½“) type of pulsed air nozzles are able to break up material of an average 2400 mm. A requirement is a sufficient pressure and flow rate of the air; it is essential to ensure a uniform flow.

Picture 1

schematic diagram of the Airsweep pulsed jet system

- Myrlen® pulsed air nozzles
- System of compressed air distribution
- Control unit

What is the Airsweep® pulse system and how does it work?

It’s a method of cutting away the bulk material along the walls
It functions effectively and in pulses, the compressed air is directed along the wall. The pulsed jet is effective over a sizeable area during a short pulse.

The functioning of the Myrlen® pulsed nozzle is secured using the control unit. It is necessary to prevent the short pulsed jets from the impacting on the conveyor system running under the storage silo or hopper. The system of pulsed air jets is basically a system of pulsed shots of air. This system combines the strength of high-pressure air with a system of controlled dosing. This eliminates the possibility of non-flowing material being formed on the inside walls.

Time delay between consecutive jets.

The time delay can be set according to the actual mechanical-physical properties of the given bulk material, but non-flowing material should not appear on the walls of the silo’s unloader tube.

The larger the time interval between jet pulses, the more economical the operation is, as we save on the production of compressed air.

As far as the control system is concerned, we recommend applying the pulsed jet system to the customer’s current technology system. We can supply a control system according to the wishes of the customer, i.e. we ensure the functioning of an appropriate control system already established by the customer, or we can provide a control system card. We normally supply an AOV automatic control system or the Simatic S7 – 300 control system for management of the Myrlen® pulsed jet nozzles.

We recommend applying a control system which can be operatively programmed and will evaluate the necessity of operation. For example if the lower shaft locking is closed or the conveyor technology is stopped, it is not necessary for the pulsed jets to be in operation. This would have negative effects, ie. the material in that space would solidify.