SU882853A1 - Belt conveyer charging position shelter - Google Patents

Description

(54) COVERING THE PLACE OF LOADING OF THE BELT CONVEYOR

I

The invention relates to conveyor transport equipment used in the mining industry, namely, shelters of a belt conveyor loading point for localization of the separated dust during the overload of bulk materials.

A shelter for loading a belt conveyor is known, comprising a housing with a ventilation duct, in the output hole of which a coagulator is installed, between the inlets and outlet of the ventilation duct and in front of the aspirator pipe in the housing there are installed flexible blades 1.

The disadvantage of this device is that the presence of the ventilation duct leads to the complexity of the design. In addition, this channel may be clogged.

The closest to the proposed technical essence and the achieved result is to cover the loading area of the belt conveyor, including a housing with a loading element with an aspiration funnel, between which a separating element made of two rows of plates is placed inside the hinge-case;

the rows enter with their edges into the inner space bounded by the edges of the plates of another row, forming a labyrinth (2.

However, the separating element installed in front of the suction nozzle creates a large hydraulic resistance to the exhausted air, which can lead to the creation of pressure zones in the shelter, as a result of which the efficiency of aspiration decreases and the yield of dust in the suction network increases.

The purpose of the invention is to increase the efficiency of aspiration and reduce the dust entrainment to the aspirate network.

The goal is achieved by the fact that in the shelter of the loading site of a belt conveyor, including a housing with a loading bin, j bomb and a large aspiration, between which inside the housing is hinged with the upper part of the separating element, the separating element is made in the form of a shield with holes and fixed in them side aspirate voroiki liffa20 zornym nozzles.

Claims (2)

In this case, the holes in the shield are made with a decrease, their density is located from the bottom of the shield to the top. In addition, the shield is provided with radial flexible blades mounted on its lower part by means of an axis. FIG. 1 shows the cover of the place of loading the belt conveyor, longitudinal section; in fig. 2 shows section A-A in FIG. 1. The cover of the loading area of the conveyor belt consists of a housing 1 with a loading chute 2 and a funnel 3 mounted on the top cover of the casing. The separating element is designed as a shield 4 with holes pivotally mounted on a bracket 5 with counterweights 6. Diffuser nozzles 8 are fixed to the holes 7 and the installation density increases from top to bottom. A sealant 9 with radial flexible blades is mounted on bearings 10 of axis I, on which a perforated shield 4 is rigidly fixed. A shield 12 is attached to the shield. The device operates as follows. Bulk material is loaded onto the conveyor belt through a chute and air is forced into the shelter. The loading process is accompanied by the formation of dust. A coaxial overpressure is created in the lower part of the cover (plenum 13). A sealant with radial flexible blades prevents the entry of dusty air between the perforated shield and the transported material into the chamber 14 of reduced pressure. A stream of dust-laden air rises up and spreads onto the plane of the perforated shield. A negative pressure is created in the reduced pressure chamber. Dusty air through perforations in the shield into the diffuser nozzles enters from the pressure chamber into the reduced pressure chamber. In the lower part of the shelter, the maximum amount of dusty air passes through the diffuser nozzles. The density of installation of the next in height diffuser nozzles can be made such that the speed of air passage through them throughout the cross section of the perforated shield will be constant. In diffuser in the halls, the air velocity abruptly decreases and the minimum value is reached at the outlet (in the reduced pressure chamber). Large fractions of dust fall from the stream onto the shield and are dumped onto the material being transported. Purified air from the coarse fractions is sucked into the aspiration funnel. If coarse fractions of material get on the conveyor belt, the compactor with radial flexible blades together with the perforated shield can deflect at a certain angle in the direction of the conveyor movement, without breaking the tightness between the chambers of high and low pressure. In the proposed cover, the separation element has a lower hydraulic resistance and a higher efficiency of trapping large fractions of dust. Claim 1. The cover of the belt conveyor loading area, including the body with the loading chute and the asphrating funnel, between which inside the body is hinged the upper part of the separating element, which differs with that, in order to increase the efficiency of aspiration and reduce the dust entrainment into the suction network, The separating element is designed as a shield with holes and diffuser nozzles fixed in them from the side of the aspiration funnel. 2. Cover according to claim 1, characterized in that the holes in the shield are made with a decrease in their density from the bottom of the shield to the top. 3. Shelter according to claim I, characterized in that the shield is provided with radial flexible blades installed on its lower part by means of an axis. Sources of information taken into account during the examination 1. USSR author's certificate No. 688387, cl. In 65 G 21/00, 1978. 2. USSR author's certificate number 530100, cl. E 21 F 5/00, 1975 (prototype).