SU816905A1 - Air-gravity device for unloading loose materials from storage - Google Patents

Description

bollards that are separated by a luja grid installed on it by a grid.

The advantage of this device is that the uniform distribution of the air flow during active ventilation increases, such air-gravity devices are mainly designed for active ventilation and transportation of bulk materials in the bins of warehouses whose length does not exceed 6-9 m 2.

The disadvantage of this device is that with increasing uniformity of distribution of the air flow over the area of transport. chute, it cannot be used to transport bulk material over a long distance, on the order of 30-40 m.

The purpose of the invention is to increase productivity by increasing the concentration of the air flow and increasing the rate of displacement of the material towards the discharge side.

The goal is achieved in that the louvre louver louvres are curved toward the compressed air supply.

In addition, the air inlet chute is provided with shut-off valves. The drawing shows an air-gravity device, a general view. The airborne gravity device for unloading bulk materials from warehouses contains an air inlet groove, including an air inlet channel 1, walls 2, gate valves 3, a louver grille 4 transporting the chute 5 in which a grid b attached to the walls 2 is attached by elastic connecting elements. A fan 7 serves to supply air into the chute. In front of the shut-off valves 3, a drain tray 8 is installed to feed material from the hoppers 9 into the transporting chute 5, at the outlet of which a valve 10 is installed.

Airborne gravity device for transporting material works as follows.

When the fan impeller 7 is rotated, air is in the air supply. Channel 1 of the gutter receives a directional movement under the net b due to the curvilinear surface of the louver of the louver grille 4, and the working surface of the transporting gutter

5 is limited by the shut-off valve 3. For example, when unloading bulk material from the hopper 9, the shut-off valve 3 is closed behind the waste tray -8. When the valve 3 is closed, the air flow is distributed in the area bounded by the gate valve 3 and the discharge window with the valve 10. The curvilinear surface of the louver changes the direction of the air flow. Compressed air is distributed under the grid to a directly proportional increase in resistance over the working length of the air inlet chute and comes out in more quantity from the discharge side of the bulk material, and in a smaller quantity from the supply side of the material to the conveying surface of the chute. Similar operation of the air flow ensures a smooth increase in the rate of displacement of the material towards the discharge side along the grid b of the transporting chute, which makes it possible to increase the working length of the chute during transportation

with bulk materials.

Claims (2)

1.Air-gravity device for unloading bulk materials from warehouses containing air supply and transport chutes, which are separated by a louvered grille and a grid installed on it, characterized in that, in order to increase productivity by increasing the concentration of the air flow and increasing the rate of displacement of the material in the direction of discharge, the louver is curved towards the compressed air supply. 2. The device according to claim 1, characterized in that, for the purpose of ensuring the supply of material to any point of the transporting chute; the air supply chute is equipped with shut-off valves. . Sources of information taken into account in the examination 1. Author's certificate of the USSR 541749, cl. B 65 G 53/20, 1975. 2. USSR author's certificate No. 5570 of application No. 2607083 / 27-11, cl. B 65 G 53/20, 1978.