SU757433A1 - Air mixture flow separator - Google Patents

Description

The invention relates to the field of pneumatic conveying of bulk materials, and more specifically to devices for evenly dividing the flow of bulk materials, and can be used in various sectors of the national economy, where it is necessary to supply bulk material from one feeder to several receivers using pneumatic conveying methods.

Known flow divider air mixture containing the inlet and outlet nozzles interconnected by a housing within which there is an element for dividing the flow 11].

The disadvantage of the known divider is that it does not ensure uniform division of the flow of bulk material.

The aim of the invention is to ensure uniform division of the flow into two equal parts. '

This goal is achieved by the fact that the element for dividing the flow is made in the form of a wedge, and the inlet nozzle is curved along the radius, while the edge at the top of the dividing wedge is located in the plane of the bend of the nozzle.

2

In addition, the angle at the apex of the dividing wedge is 90 ° C, and the bending radius of the inlet B 5 V ¹ 2/100, where V is the transport speed, m / s, B is the radius, m.

FIG. 1 shows a general view of the divider; in fig. 2 - the same, side view; in fig. 3 section A — A in FIG. one; in fig. 4 and 5 - diagrams of the concentration of the divisible flow at the outlet of the inlet pipe.

The divider contains a supply pipe 1, a housing 2 with a dividing wedge 3, inserts 4 and outlet pipes 5. The angle at the top of the dividing wedge is set to not more than 90 °, since a further increase in the angle leads to an increase in pressure loss. The supply curved pipe 1 is connected to the housing 2 so that the edge of the dividing wedge 3 lies in the plane of the bend of the pipe 1. Inserts 4 allow the wedge-shaped surface to mate with the outlet pipes 5.

The divider works as follows. Aerosmix enters the inlet

1. In a curved radius inlet pipe, solid particles are exposed 3

centrifugal forces, as a result of which during their entire journey in this pipe they move along its “outer” wall.

This restructuring of the two-phase flow occurs regardless of its parameters at the inlet to the nozzle (distribution of particles over the cross section, flow velocity). The concentration of particles at the "outer" wall of the nozzle increases sharply and the faster, the greater the flow velocity and the smaller the bending radius of the curved nozzle.

, If the radius of bending Η ν ^2/100 when the centrifugal force is more than 100 times the force of gravity, substantially all solid alloy · Dyje particles submitted to the "outer" wall of the pipe, and due to the fact that the proper diameter of the pipe is relatively small, the concentration of particles in the cross section of the pipeline, it is almost symmetrical about the plane of the bend of the nozzle, i.e. the plane of action of the centrifugal forces.

Located in this plane at the outlet of the ratrubka 1, the dividing wedge 3 produces (see Figs. 4, 5) a uniform dividing of the air mixture flow into two equal parts, which has been confirmed by experiment.

Next, equal parts of the flow come in (insert 4, and then into the discharge pipes 5,

757433

which are transported to the destination.

Claims (3)

Claim 1. The flow divider air mixture containing the inlet and outlet nozzles interconnected by a housing, inside which ₁₀ there is an element for dividing the flow, characterized in that, in order to ensure a uniform division of the flow into two equal parts, the element for dividing the flow is made in the form of a wedge, and the inlet pipe _{15 is} bent along the radius, while the edge at the top of the dividing wedge is located in the plane of the bend of the nozzle. 2. Divider by π. 1, characterized in that the angle at the tip of the dividing wedge οί. - 90 °. 3. Divider by π. 1 otlycha Yusch dc and I in that the bending radius of inlet Η $ ν ^2/100 where V - transport velocity, m / s, d - radius m.