SU1400671A1 - Loading device for screen - Google Patents

Abstract

The invention relates to devices for the classification of bulk materials (M) by size and m. used in the coal, mining and other industrial sectors. The goal is to increase the productivity of the screen and to improve the quality of the separation of M by ensuring uniform loading of the screen across the width. On the surface of the steeply inclined chute (G) 1, the longitudinal strips (PR) 2 are reinforced. Installed with the possibility of adjusting the position of width W 1, the extreme PR 2 have a length greater than the length of PR 2 installed between them. holes perpendicular to the movement of M with the possibility of reciprocating movement of the grate 3, forming a slit part of the bottom W 1. To W 1 attached funnel Yu to collect passed through the ear (L

Description

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NIKI 3 M and an otboyny sheet 11. The original M is divided by PR 2 into uniform flows and moves between PR 2 along a slit-like surface W 1. Large grains of M descend from it, hit the sheet 11,

lose speed and evenly load onto sieve screen. Grains M with a size smaller than the boundary grain pass into the slots and output to the collection of the undersize product. 3 il.

one

The invention relates to devices for the classification of bulk materials by size and can be used in the coal, mining and other industries of the national economy.

The purpose of the invention is to increase the productivity of the screen and to improve the quality of the separation of the material by ensuring uniform loading of the screen across the width.

FIG. 1 shows the loading device, side view; in fig. 2 - the same plan; in fig. 3 is a diagram of adjusting the position of the strips-dividers.

The loading device of the screen contains a downward-extending steeply inclined chute 1 with several longitudinal strips 2 disseminated on its surface.

In the holes made at the ends of the strips-dividers 2, grate 3 are placed, forming the slit-like part of the bottom of the gutter. Grate bars have a circular or other cross-section that ensures unimpeded passage of the bottom product.

The upper part of the extreme strips 2, fixed on the widening part of the gutter, is connected to the lower part of these bands by means of hinges 4. On the sides of the gutter there is a rail 5 with longitudinal radial grooves 6 fastened. Through these grooves 6 bolts 7 mounted on the ends of the upper part of the extreme strips-dividers 2. This is intended to adjust the position of the strips-dividers 2 across the width of the chute 1 and, therefore, to adjust the amount of material flow to the side of the boot device.

The distance between the grate 3 is determined by the separation size of the product. The distance between the strips of the diffusers 2 depends on the width of the screen and the stroke of the actuator. The length of the extreme strips of dividers 2 is greater than the length of strips of dividers installed between them.

The grate 3 in the opening x of the splitter bar 2 is arranged perpendicular to the movement of the material with the possibility of reciprocating movement and have a thread on one side by means of which they are fixed to the outside of the groove through one left and right of the rail 8 connected to the drive 9. A funnel 10 is attached to chute 1 to collect material that has passed through the grate and a perforated breaker sheet 11 located at the end of the device. The actuator 9 is mounted on a special frame mounted on the sides of the groove 1, perpendicular to the rail 8. The actuator stem 9 is connected by levers 12 and 13 mounted on the shafts 14 with the rails 8.

The boot device rumble works as follows.

The material enters the expanding part of the chute 1, is divided by strips 2 into several streams. The adjustment of the extreme strips-dividers 2 is made by rotating them around the axis of the shanirs 4 so that they cut off one fifth of the flow (for devices with four strips of dividers). At the same time, the bolts 7 fixed on the stripper strips move to the left or right in the grooves 6 of the rail 5. Having reached the desired position, the stripper dividers 2 are fixed on the rail 5 by bolts 7. The material, divided into uniform flows, descends from the head widened parts and moves between the strips on the slit-like surface of the chute. At the same time, material grains smaller than the boundary grain pass through.

into the slots and fall into the collection of the undersize product.

The coarse grains of the material descend from the slit-like surface, striking the perforated breaker sheet 11, lose speed, and smoothly and evenly across the entire width are loaded onto the screen sieve.

To prevent sticking of the slit-like surface, the actuator 9 acts on the levers 13, which are rigidly mounted on the shafts 14. In this case, the levers 13 rotate the shafts 14 at some angle in one or the other direction alternately. The arms 12, which are firmly seated on the shafts, are hinged to the rails 8 and move them with the grate bars 3 fixed in them synchronously, out of phase for a distance equal to the distance between the strips-splitters. By moving in the openings of the dividers, the grates are cleaned of adhering wet fines. The antiphase movement of the grate provides the most complete equilibrium arising at the same time loads on the supporting structure of the chute.

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After the forward stroke of the rods 9 is completed, the reversal of the movement in the opposite direction is performed, and then the cycle is repeated.

Claims (1)

Invention Formula Loading device, including the expansion of the screen. downward is a cool-filled gutter with longitudinal strips fixed on its surface and a breaker sheet, which, in order to increase productivity 5 screens and improving the quality of separation of the material by ensuring uniform loading of the screen width, the loading device is equipped with grates located in the openings made at the ends of the strip-dividers and installed perpendicular to the movement of the material with the possibility of reciprocating alternation, while the extreme polo5 The syringers are mounted so that they can be adjusted to the width of the gutter, and their length is longer than the length of the splitter bands installed between them. 9i, gz