FI62992C - TILLAEGGSANORDNING TILL EN SILO - Google Patents

Description

1 62992

Silo accessory - Tilläggsanordning account en silo.

The invention relates to an accessory for a silo, such as a aggregate silo, comprising a vault member 5 arranged above the downcomer, under which air is blown.

As the state of the art, reference is made to Olavi Väänänen's FI patents 47508, 48250, 47864 and 51084.

However, there may be a situation where the frictional force between the silos may be greater than the total gravity and compressive force, so that no run-off occurs.

The object of the present invention is to reduce the frictional forces of the resting state and to ensure the undisturbed movement space of the aggregate when the ki-20 aggregate is unloaded from the downcomer.

This object is achieved on the basis of the feature of the invention set out in the appended claim 1.

The invention will now be illustrated by reference to the figure of the accompanying drawing.

The figure shows a aggregate silo with a drain funnel at the bottom, which in the flat-bottomed silo consists of paved aggregate, but which is in practice made of a metal plate to reduce friction. The lower end of the drain funnel has a discharge opening, above which the upper end of the drain funnel has a vault extending across the silo, under which air is blown by a fan (not shown).

The silo is more or less filled with aggregate. The gravity of the silo material is, for example, 100,000 kg. The compressive force of the air blown under the vault depends on the surface area of the vault (19 250 cm) and the pressure used (1.5 kg / cm).

The compressive force can be e.g. 28,875 kg.

The frictional force between the silos may be greater than the total pressure and the compressive force. In this case, the aggregate does not drain from the downcomer.

To eliminate the problem, a friction plate 10 in the direction of the compressive force is arranged between the vault member and the lowering opening, which dissipates the frictional force between the silos, so that all silos can be pushed out of the lowering opening.

Claims (2)

3 62992 An accessory for a silo, such as a rock silo, comprising a vaulting member arranged above the downcomer, under which air is blown 5, characterized in that there is a substantially vertical friction plate between the vaulting member and the downcomer. Auxiliary device according to claim 1, characterized in that the friction plate is located in the vertical plane of symmetry of the vault member and the landing opening in the region of the upper part of the silo drain hopper.