Discharge of tanks and silos

For the discharge of material from storage tanks, there are systems available which are based on releasing the product by compressed air. In comparison to other systems, these systems are more considerate in terms of noise and mechanical damage to the tank case. We offer different solutions based on the characteristics of the product stored.

For fine products, with granulometry in micrometres and millimetres, we use Vibra-Disc nozzles with a unique ability to direct the flow of air along the inner wall of the tank, thus effectively releasing the arch.

Products with a larger granulometry can be released with TVS nozzles, or with air cannons using impact energy at instantaneous expansion. Special applications which need to be fluidised, or where the product e.g. needs to be left to dry completely during discharge, can be dealt with using Dynapore porous material.

All the systems can be used with air or inert gas when the equipment needs to be run in an environment where there is a risk of explosion.

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Aeration nozzles
Air cannons
Dynapore - porous materials

Aeration nozzles

Aeration nozzles are suitable for fine bulk materials which create an arch. They are mounted on the inner side of the tank cone or pyramid. The nozzle design allows them to be installed even on the outside of the storage tank.

Aeration heads are connected into individual zones controlled by valves which are activated by a control unit or timer. This creates a coherent system which can be run fully automatically.

We use two basic types of nozzles: Vibra-Disc nozzles are mounted with the rubber disc on the inner side of the tank, and the released air flows along the tank wall. TVS nozzles are welded to the tank wall, and, when idle, they do not rise above the surface of the inner side of the tank casing. The released air flows in the direction from the tank wall.

Vibra-Disc aeration nozzle

Easy assembly into existing systems even without access to the inside of the silos No moving parts Low consumption of air The material of the flexible discs can be chosen based on the environment Operating even at a low air pressure Low…

TVS telescopic nozzles

Installation into existing systems without access into the silo. High mechanical durability. Low consumption of air. Low running costs. Easy inspection of the condition of the nozzles from outside of the tank Long service life.

Air cannons

They provide the most effective means of releasing the arch for the most demanding materials (e.g. coal, slag, sawdust...). Within a split second, the air cannon releases the accumulated content of compressed air, the air flows through the outlet pipe of a large diameter, and its stroke disrupts and releases the blocked material. The outlet pipe is welded onto the tank at an angle so that the gas can flow in the direction towards the storage tank discharge.

Each cannon is fitted with a valve and the control unit can activate the assembly so as to release the arch in a fast and effective way.

DVS air cannons

Operating pressure 2 to 10 bar Operating temperature from -10°C to +60°C Long service life thanks to the minimal amount of parts subject to wear Low noise level Pneumatic or electric control Manual or automatic operation Made in…

Dynapore - porous materials

Dynapore-laminated porous materials, constructed of stainless wire mesh, ensure the required permeability and durability at the same time. The fluidisation plates have the same permeability in the order of micrometres across their entire surface which ensures uniform fluidisation of the product.

With temperature resistance of approx. 535°C and resistance to mechanical damage, they provide a suitable alternative to textile materials.

Work with the fludisation plates is easy. They can be shaped and machined similarly to stainless steel sheets. Out of the plate of basic dimensions - 600x1200mm and 915x915mm - it is possible to create basically any shape using regular methods.

Porous materials

High durability Usually delivered as 610x 1220 mm or 915x915 mm plates, or as pipe fittings. Easy to shape, cut and weld Alternatively, they can be delivered as pipe fittings Even distribution of the gas flow Even distribution of the…