SU921994A1 - Aspiration shelter of belt conveyer loading station - Google Patents

Description

I

The invention relates to the mining and metallurgical industries. And can be used in all sectors of the national economy where the overloading of dust materials is used.

Typically, with such overloads, the air velocity at the exit from the loading chute is from 1.5 to 5 m / s.

The aspiration shelter of the belt conveyor loading site is known, which contains an outer case with a loading chute, an aspiration pipe and a baffle plate and an inner case, made in the form of a hollow triangular prism with an open bottom face and inclined end faces. The inner case is installed inside the outer one with a gap at the base with respect to its side walls, and is adjacent to the end walls and the baffle plate. Upper wall of the outer casing is made

inclined in the direction of the boot; estrus, partially cuts it off and is adjacent to the rocker plate 11.

The disadvantages of this cover are the complexity of the design, the large metal consumption and limited scope, the use of the cover is effective only for granular and powdered materials.

Closest to the proposed

The technical essence and the achieved result is the aspiration shelter of the loading site of the belt conveyor, including a housing located above the conveyor belt, in the flat cover of which there is an aspiration pipe and a loading chute with an upper wall and a guide having a baffle plate at the bottom end. Under the suction nozzle,

Claims (2)

trapezoidal air distribution plates are located, forming (with side walls of the casing of a slit of variable width 2. However, with this construction, the air flow ejected by the pa, giving the material, at the entrance to the shelter, moves in the direction of loading gutter, and is hit by a conveyor belt, which creates an overpressure under which dusty air seeks to get out of the shelter through its looseness, located in places where the shelter walls are attached. In order to prevent dust from penetrating into the room, it is necessary to maintain a leak in the area of leaks in the order of 6-10 Pa. Under the action of this vacuum, not only is the air drawn through the leaks outside, but the amount of air entering the shelter increases, which leads to an unnecessarily large amount of air removed from the shelter. All this reduces the efficiency of dust removal. The purpose of the invention is to increase the efficiency of dust removal by reducing the volume of aspirated air. The goal is achieved by the fact that, in the aspiration shelter of the belt conveyor loading site, which includes a housing located above the conveyor belt, in the bolt of which there is an aspiration pipe and a loading chute with an upper wall and a guide having a baffle plate at the lower end, a lid between the aspiration pipe and the upper The wall of the loading chute is made convex into the interior of the housing and has a smooth interface with the upper wall of the loading chute facing the side of the fender plate. I The drawing shows an aspiration shelter for a belt conveyor loading site, longitudinal section. The aspiration shelter for the site of the ruzka of the belt conveyor contains a box-shaped box-shaped body 1 with a lid 2 in which the loading chute 3 and the suction nozzle k are located. The feed chute 3 has an upper wall 5 and a guide 6 with a baffle plate 7 at the lower end. The cover 2 of the housing 1 is a continuation of the upper wall of the loading chute and in the gap between the aspiration pipe and the top 5 is made convex into the inside of the wall. The cover 2 has a housing interface 8 with the upper smooth wall of the loading chute facing the side of the fender plate 7. The housing cover cover, being the continuation of the upper wall of the loading chute, forms with the baffle plate a narrowing at the point of passage of dusty air to the shelter. The flow of air ejected by the material, which can be considered as The rotated jet, as it moves along the loading chute, according to the Coanda effect, the passage through the constriction formed by the convex cover of the shell and the baffle plate does not flow to the conveyor belt completely adheres to the convex cover and is directed to the suction nozzle. As a result, the dusty air stream is completely sucked away from the shelter and does not enter through the leakage into the room. In this case, there is no need to maintain a vacuum in the lower part of the shelter. As a result of this, the suction air exchange is sharply reduced. Such an embodiment of the suction cover of the belt conveyor allows, during its reliable operation, to reduce the aspiration air exchange by 20-25% as compared with the air exchange required when installing the shelter with a flat upper body cover. Claims Aspiration Shelter of a Belt Conveyor Loading Site, comprising a housing located above the conveyor belt, in the lid of which is an aspiration port and a loading chute with an upper wall and: a guide having a baffle plate at the lower end, characterized in that efficiency, dedusting by reducing the volume of aspirated air, the lid between the suction nozzle and the top wall of the loading duct is made convex into the interior of the case, and has a smooth fit with the upper wall of the boot 592199 " gutters facing the fender 1. USSR author's certificate for the slab .. H- 524920, cl. E 21 F $ / 00, 197. Sources of information, No. 5955.17, CL. E 21 F 5/20, 1976 taken into account in examination 5 (prototype) .. 2. USSR author's certificate