SU779206A1 - Aerodynamic conveyer for loose materials - Google Patents

Description

one

The invention relates to transporting devices and can be used for unloading bulk powdered and fine-grained materials and their transport products.

The aerodynamic conveyor for moving bulk materials and products is known, comprising a fan, an air inlet nozzle, fO louvre grille, a transport channel and devices for receiving and discharging the material descending from the lattice of the ZRI. channels separated by a louvre grille, inlet and outlet pipes, air inlet pipe and fan

A disadvantage of the known conveyors is that the particles of the material in the longitudinal-vertical direction move at different speeds due to the wall effect, expressed by the inhibitory effect of the walls of the transport channel and the friction of the particles against each other. At the same time, particles with the lowest velocity move along the channel walls and along the DZ

As you move closer to the longitudinal axis of the conveyor, the speed of movement of the particles increases.

The effect of the inhibitory effect of the walls on the nature of the distribution of particle velocities across the width of the transport channel leads to a decrease in the overall and specific productivity of the conveyor, and also causes uneven heating or cooling of the material when these processes are combined with the transport process.

The purpose of the invention is to increase productivity, reduce damage to the bridge of the material being transported, and equalize the heating or cooling temperature of the material particles converging from the louvre grille.

For this, the holes of the louver grille have a gradually increasing cross section in the direction from the longitudinal axis to the edges of the conveying channel with a constant pitch between the holes in the row.

FIG. 1 schematically shows the proposed aerodynamic transport, section; in fig. 2 - the same. view along arrow A in FIG. one; in fig. 3 shows a section in FIG. 2

The aerodynamic conveyor contains a fan 1, an air supply pipe 2 connected to an air distribution channel 3, and a transport channel 4. Air channel 3 and transporting channel 4 times. divided by a louvered partition 5. The material is filled up through the loading device 6 with an adjusting flap 7, unloading occurs through the unloading device 8 with an adjusting flap 9. the lattice axis to its edges with the same distance 15 between the holes in the row. The louvre grille may also have holes with the same living cross-section, but with a decreasing distance between the holes in the already indicated direction.

SRI.

The technological process of transportation proceeds as follows.

When the fan 1 is operated and the flaps 7 open, the particles of the transported material flow out of the charging device b and enter the initial part of the louvered grille; 5, where, under the influence of the kinetic energy of the air jets, the exit of the slit holes 10 of the grid, and the component gravity (when the conveyor is tilted in the direction of movement of the material), they move along the transport channel 4 and exit from it. unloading device 8.35

Increasing the area of the holes of the louver grille in the direction from its longitudinal axis to the edges of the conveying channel at a constant distance between the research institutes between the holes causes a large air flow into the holes as they approach the edges of the grille. Such an air supply increases the effect of the airflow jets on the particles of the material being moved near the zone of the side walls of the conveying channel and in the adjacent

zones, aligns the speeds of movement of the material across the width of the louvered grille and increases the conveyor’s performance, since over the entire width of the transporting channel the speed of movement of particles of the material is almost the same and can be close to the maximum allowable strength of the material being moved. The equalization of the rates of movement of the particles of a material also causes their more uniform heating (cooling).

The economic effect of operating the proposed aerodynamic conveyor is achieved by increasing its productivity, reducing damage and increasing the uniformity of cooling (heating) of the transported bulk material.

Claims (2)

1. Reference Book Pneumotransport installations. Ed. B.A.Anninsky L., Mash51rstroenie, 1969, p.166, fig. 146. 2. USSR Author's Certificate No. 541749, Cl. B 65 G 53/20, 1975 (prototype). // one Svch Vv vW lvY lVчNVCO ЧX VXЧНN f Phi2.1 Vida HI and n and a and 1 and and 01 D And in and in D and in D and 0 to 0 to and D ia Figg }) ten g w X