SU1258500A1 - Method of separating loose materials and pneumatic separating device for effecting same - Google Patents

Abstract

1. A method of separating solids, including the supply of material & nlpl flux - -Brush bring nklyv / vineirial in vertical pulsats cyclical cannon flowed on a regular position and therefore 15 into the upward air flow of the vertical channel and creating pulsations of the air flow rate by cyclically changing the flow area of the channel and directing the air flow in this section, characterized in that, in order to increase the separation efficiency by creating a uniform velocity th field of the cross section of the airflow passageway cyclical variation sectional position and direction of air flow is realized for the in mutually perpendiku homo INES / l uineei polar directions with a frequency of 6 - 15 O) C

Description

2. Pneumo-separating device for separating loose mothers; a suture including a vertical pneumo-separation channel, transverse plates hinged in the channel connected to the mechanism of cyclical change of their position with a drive, characterized in that, c. goal of efficiency

The invention relates to methods for separating bulk materials by aerodynamic properties and devices separating and separating bulk materials, and can be used to clean and match seeds in forestry and agriculture.

The purpose of the invention is to increase the separation efficiency due to the creation of a uniform velocity field across the cross section of the air flow.

FIG. a diagram of a pneumatic separator device for carrying out the proposed method is presented; figure 2 - turbulizer; in Figures 3 and 4, the flow velocity fields for the extreme positions of the dampers; 5 is the same for the middle position; Figure 6 is the same in the oscillatory mode of the lock,

Pneumo-separating device contains a hopper, feeder 2, enclosed in a cylindrical body 3, the outlet of which is combined with the inlet of pneumo-separation channel 4.- The upper pneumo-separation channel is connected to the sediment chamber 5 and the fan 6. At the bottom. Pneumo-separation channel 4 is installed with a turbulizer 7 in the form of rows of transverse plates 8 and 9 arranged one above the other, installed mutually perpendicular.

The plates are pivotally fixed on the axis x 10 and interconnected in section sections 1-1, the free ends of which are kinematically connected to the crank .12 of the drive mechanism for the cyclic change in the position of the plates.

dividing by creating uniformly over the velocity field over the cross section of the air flow, the plates have two mutually perpendicular rows, and the mechanism for cyclically changing the position of the transverse plates is made in the form of t g connecting the corresponding rows of transverse plates with a crank with a drive.

Between the fan 6 and the sediment chamber 5 is placed a device 3 for controlling the speed of the air flow.

The method is carried out as follows.

The material to be separated is poured into the hopper 1, from where the feeder 2 is fed to the pneumo-separation channel 4, where an air flow is created by a fan, the speed of which varies in mutually perpendicular directions from 0.7 to 0.95 speed

Vitali heavy fraction in the center of the channel to (1, 05-1, 5) from the PA of its periphery with a frequency of 5-15 s. This mode of movement of the air flow provides a turbulizer 7 due to

oscillations of rows of plates 8 and 9, which develop around the axes 10 in both directions relative to the vertical position at an angle of 20-60, since such angles of rotation provide

achieving the desired flow rate at the channel walls. When the plates are turned to the extreme positions (Figures 3 and 4), the flow velocity at the channel walls increases, with the vertical position

plates (figure 5) the flow velocity at the channel walls decreases due to air friction against the channel walls and has a maximum value in the central part. With constant oscillation

the plates overlap with speed patterns (FIGS. 3-5) and a generally aligned air flow is formed (FIG. 6). The air flow is oscillating at the time due to

airflow fluctuations in the specified modes, lighter particles

3

accelerated faster than heavy, resulting in improved separation efficiency.

The change in the speed of the air flow in the central part of the channel is carried out by a regulating device 13 installed between the fan 6 and the sediment chamber 5. At the channel walls, the speed is controlled by changing the angle of rotation of the plates relative to the vertical position. The greater the angle of rotation of the plates, the Bbmie flow rate at the walls

2585004

Canada. The oscillation frequency of the plates is controlled by changing the angular velocity of the crank 12 and for greater flow velocities should be of greater value.

Under the action of the oscillating air flow, the bulk material is separated, light fractions are carried away into the sediment chamber 5, and the heavy ones pass through the expelled flow and leave in the lower part of the pneumo-separation channel.

12

FIG. 2

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FIG. five

Compiled by A.Rum nceva Editor O.Golovach Tehred M.Morgental Corrector V.Chut ha

Order 5058/8 Circulation 565 Subscription

VShPI State Committee of the USSR

on inventions discoveries 113035, Moscow, Zh-35, Raushsk nab. D.

Production and printing company, Uzhgorod, st. Project, 4

Fyg.

zhzhzh

6

Claims (2)

1. The method of separation of bulk materials feed mate - bring light - heavy guchoishi rial into the upward air flow of the vertical channel and the creation of pulsations of the air flow rate by cyclically changing the flow area of the channel and the direction of the air flow in this section, so that, in order to increase the separation efficiency by creating a uniform velocity fields over the cross section of the air flow, cyclical change in the position of the flow area of the channel and the direction of the air flow is carried out in mutually perpendicular directions with a frequency of 6-15 s "'. Fia / 1258500 2. Pneumo-separating device for separating bulk materials, including a vertical pneumo-separation channel, transverse plates pivotally mounted in a channel, associated with a mechanism for cyclically changing their position with a drive, characterized in that, in order to increase the separation efficiency by creating a uniform velocity field across the cross section air flow, the plates are arranged in two mutually perpendicular rows, and the mechanism for cyclically changing the position of the transverse plates is made in the form of g linking the corresponding series of transverse plates GOVERNMENTAL crank drive.