SU1335329A2 - Multisieve screen - Google Patents

Description

The invention relates to equipment for screening bulk materials and can be used in mining, milling, chemical and other areas of bulk.

The aim of the invention is to increase the efficiency of the separation process by providing a change in the path of movement of the material along the screen, as well as reducing operating costs.

Figure 1 presents the roar, longitudinal section; figure 2 - section aa in figure 1.

The multi-sieve screen comprises a housing 1 with sieve frames 2, a loading nozzle 3, a distributing device in the form of an expanding groove 4 equipped with partitions 5 forming channels 6, receiving trays 7, a vibrator 8, discharge pipes 9 and to, respectively undersize screening products. The U. of the vibrator 8 is unbalanced on. The mass 11 is made solid, extended along the height of the screen, and is placed on the side of its loading. The chute 4 of the distribution device and the receiving trays 7 of the sieve frames 2 are fitted with a central recess 12, in which the unbalance mass 11 of the vibrator 8 is fixed in the bearing units 13 on the frame 14.

The roar works as follows. ;

The source material flows through the pipe 3 to the chute and through the channels 6 formed by the longitudinal partitions 5, distributed over the width of the screen. The screen body performs oscillatory movements in the horizontal plane and due to the unbalanced balance weight 11 rotating in the nodes 13.

through channels 6 formed by the longitudinal partitions 5 of the chute 4, the material is divided into two streams, from which it comes to the parts C and D of the receiving trays 7 of the frames 2.

From the receiving trays, the material enters the sieves, where it is divided into sublattice and oversize fractions, which are discharged through the pipes 9 and 10 from the body. The product on the sieves is moving along different trajectories. On the loading section, the ellipsoid is drawn in the transverse direction.

trajectories. This trajectory of movement is due to the proximity of the placement of the unbalanced mass 11.

The amplitude of oscillation in the installation zone of the unbalanced mass is maximum

in the transverse direction, therefore, the screening process in this zone is more intensive, the material is distributed across the width of the screen most efficiently. As you move

product to the discharge end of the screen, the oscillation amplitude decreases in the transverse direction and increases in the longitudinal direction. The motion path of the material is pulled along

sieve frames 2 screens, which contributes to the rapid removal of screening products from the housing 1. The variable trajectory of the material on the sieve contributes to less clogging of its holes, which affects the increase in screening efficiency.

The location of the mass 11 of the vibrator 8 in the recess I2 of the gutter 4 distribution device and receiving trays 7

facilitates repairs and preventive maintenance, as it provides a free approach to the bearing assemblies 13, which are located at a height that is accessible to maintenance personnel.

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Aa

Claims (1)

MULTI-SCREW RATCH on avt.sv. No. 711725, characterized in that, in order to increase the efficiency of the separation process by providing measurement of the trajectory of the material along the length of the screen, the trough of the switchgear and the receiving trays of the sieve frames are made with a Central recess in which the vibrator is installed. SU,. „1335329