SU1209315A1 - Fire grate - Google Patents

Description

one

The invention relates to devices for classifying bulk material and can be used in the coal, coke, mining and other industries using a scraper conveyor.

The purpose of the invention is to improve the classification performance by reducing the loss of a large lump material.

Fig about 1 shows the grate scraper conveyor, top view; Fig. 2 shows the start of the grate in the direction of movement of the material, made with a cut at an angle of 40-40 from the horizontal plane of the transverse grate.

The grate 1 of the scraper conveyor 2 is made of sections 3 in which the grate 4 is inclined, and in adjacent sections 3 the grate 4 is installed at an angle of 6-15 to the axis of the conveyor 2, and section 3 is connected to the cross grate 5 in such a way that the ends The grates 4 of one section are located between the beginning of the grates 4 of the other section. To move the lump material along the bottom 6 of the conveyor 2, the latter is equipped with an endless traction body 7 with scrapers 8 "

The grate 4 of the two sections are mounted on the transverse grate 5, the beginning of which in the direction of material movement can be performed with a cut at an angle B 40-60 ° to the horizontal plane of the transverse grate (fig 2)

When the grate of the scraper conveyor is operating, the flow of the classified material is fed to

093152

the bottom 6 of the conveyor 2, which is moved along the bottom b using scrapers 8 connected; 7. Moving along the bottom 6 with the help of 5 scrapers 8, the lumpy material falls on the grate 1j where the material is classified, pieces smaller than the grid-board distance are evacuated to the undersize product, and pieces of more inter-spacing distance are loaded the opposite side of the conveyor 2,

The device works as follows.

15 way.

The grate feed material to be separated is moved along the grate using a scraper conveyor.

20 First of all, small classes from the lower level of a two-layer layer of lumpy material 5 are evacuated to the underlattice 5 and then small 1;

25 layers of lump material move to the lower level and then to the sub-lattice space.

The selected interval of the angle of inclination of the grate s. 6-15 allows you to improve the performance of the classification by improving the dropout of fines and reducing damage to large pieces,

35 In addition, the beginning of the grate in the section with a cut in the direction of movement of the material at an angle of / 3 40-60 to the horizontal plane of the cross-section of the grate

40 makes it possible to further reduce the loss of coarse lump material by reducing the frontal resistance of the grate.

1

FIG. 2

editor S. Saenko

Compiled by L. Kharitonov

Tehred A. Babinets Correctants, Muska

Order 354/14 Circulation 566 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Filial of ISh Patent, g, Uzhgorod, st. Design,. four

Claims (2)

1. GRAVEY GRILLE, comprising a frame and a sieving surface fixed to it, made of sections in which the grates are mounted obliquely to the longitudinal axis of the sifting surface with a change in the direction of the angle of inclination in adjacent sections, characterized in that, in order to increase the classification performance for by reducing the loss of large lumpy material, the grid-irons of the sections have an inclination angle of 6-15, and the frame is made in the form of grid-irons. mounted perpendicular to the longitudinal axis of the screening surface, p Therefore, the ends of the grates of one section are located between the beginning of the grates of another section. 2. The grill according to claim 1, characterized in that the beginning of the grate 18 is made with a slice at an angle of 40-60 ° to the horizontal plane of the cross-section of the grate. SU. „1209315>