FI62993B - UTMATNINGSANORDNING FOER SILO - Google Patents

Description

1 62993

Unloading device for silo. - Exemption from silo.

The invention relates to a discharge device for a silo comprising walls, a bottom hopper and a feed slot at its lower end.

Solids such as wood chips and peat make it difficult to dismantle the silo because the substances are easily vaulted. The problem is currently solved with various vibrators or push rods, chain conveyors or parallel screws. These are expensive and cumbersome systems and consume a lot of energy.

The object of the invention is to provide an efficient discharge device with which hoisting can be avoided and drainage can be made more efficient.

This object is achieved by a silo unloading device according to the invention, the characteristic features of which appear from the appended claims.

The invention will now be illustrated with reference to the accompanying drawings, in which Figure 1 schematically shows the lower part of a silo equipped with a discharge device according to the invention and Figures 2 and 3 illustrate the operating principle of a discharge device according to the invention.

The structure of the device according to Fig. 1 can be seen from the following parts list: 1 movable bottom wall 2 fixed silo walls 3 seal between the fixed and movable wall 4 pivot joint 5 lifting grille 62993 6 cam wheel 7 adjustable edge part 8 feed slot 9 transfer conveyor.

The operation of the device is as follows. The silo is filled with the substance to be treated, e.g. with chips. Demolition of the silo is started by starting the conveyor 9. The material flows to the conveyor 9 through the slot 8. After a certain time, depending on the material, the drainage stops due to vaulting. The automatic steering starts the cam wheel 6. The movable bottom wall 1 is mounted on the frame by a joint 4 and pivots about it by a certain distance when raised by the cam wheel 6. The movable wall 1 causes the material part to move as shown in Fig. 2: First along the arc of the circle A to the inflection point B, then due to the shape of the cam 6 the wall 1 falls quickly towards the discharge opening, i.e. the feed slot 8.

At the same time, the lifting movement of the wall 1 causes a fracture surface 10 in the entire amount of material, which breaks the formed vault (Fig. 3).

The cycle repeats at intervals typical of each material. In order to minimize the power requirement of the transfer conveyor 9, the width of the feed slot 8 can be adjusted by the movable plate 7. This prevents the transfer conveyor 9 from clogging.

The invention achieves the following advantages: - enables the lateral transfer of the material in the silo without the actual transfer mechanism - prevents vaulting - can be built without size restrictions - low energy consumption - adjustable feed to the conveyor - particularly suitable for solid fuel such as wood chips, processing.

- both bottoms of the silo can be constructed to be movable, which is advantageous when handling powdered substances.

Claims (3)

62993 Pa tent t ivaa t imuk.se t Discharge device for a silo comprising walls (2), a bottom hopper (1) and a feed slot (8) at its lower end, characterized in that the wall (1) of the bottom hopper is articulated (4) from the pivot to the body and arranged by a cam mechanism (5, 6) down for translation. Discharge device according to Claim 1, characterized in that the cam mechanism (5, 6) is designed in such a way that the inversion takes place slowly and the inversion takes place rapidly by dropping. Discharge device according to Claim 1 or 2, characterized in that a flexible seal (3) is provided between the fixed wall (2) and the movable bottom wall (1).