SU1736875A1 - Hopper for loose materials - Google Patents

Abstract

The invention relates to loading and unloading devices, in particular to devices for loading bunkers with bulk cargoes, and can be used for receiving bins of wagon dumpers. The purpose of the invention is to reduce dust generation and energy consumption during aspiration. The bunker contains a feed hopper 1 for feeding material through the receiving part 2, nozzles 3 installed on duct 4 and serving to supply finely dispersed liquid from pipe 6 to the tank 7. A grill is installed in front of the back wall of the funnel and consists of horizontal slats 9, and the lower section 10 is made of rails 11 oriented along the generatrix of the funnel, with section 8 being installed relative to the vertical plane at an angle smaller than section 10. On the back wall of the funnel are rigidly fixed erpendikul molecular rails top plate portion 12.2 z.p.f- ly 2-yl, (A C

Description

The invention relates to loading and unloading devices, in particular to devices for loading bunkers with bulk cargoes, and can be used for receiving bins of wagon dumpers.

A known bunker is installed under the unloading car, in which a curtain is created that prevents dust from entering the atmosphere.

The disadvantage of the bunker is the removal from it of an air curtain of a large number of fine fractions of bulk material when an air stream hits the wall of the bunker, which necessitates the creation of complex and energy-intensive devices for capturing air flow and does not ensure the required quality of its dust removal. the atmosphere.

The closest technical solution is a bulk material bin, which includes a feed hopper with a protective distribution distributor in the form of a jet of a designated air flow forced through the funnel air duct, a fan, a cyclone and a fender apron.

The disadvantage of this device is the removal of a large amount of fine fractions of bulk material by the air flow from the bunker as a result of the impact of high energy on the air jet load and the impact of the flat material flow and air on the wall of the bunker, which necessitates the creation of complex and energy-intensive devices for trapping air flow and cleaning it from dust when released into the atmosphere.

The purpose of the invention is to reduce dust generation and energy consumption during aspiration.

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This goal is achieved by the fact that the bulk material hopper, which includes a hopper, an air duct to form a protective distribution rail, is provided with a grille placed inside the hopper at its rear wall and consisting of two rigidly connected at an obtuse angle to each other the upper and lower sections, the first of which is set at a smaller than the second angle to the vertical and made of horizontal rails parallel to each other, each lying in a plane placed at an angle to the horizon, and the bottom d - from strips oriented along the generatrix of the funnel, the air duct is provided with nozzles, and at the rear wall of the funnel at the upper portion of the lattice are rigidly fixed perpendicular to the upper portion of the plate rails,

The presence of a lattice placed inside the hopper at its rear wall and consisting of two upper and lower sections rigidly connected at an obtuse angle to each other, the first of which is installed at a smaller angle than the second and the horizontal rails each lying in a plane placed at an angle to the horizon, and the bottom one of the rails oriented along the generator funnel and fixing plates on the back wall of the funnel of the plates exclude a frontal blow of air and material flow against the wall of the bunker that osobstvuet reduce dusting and significantly reduces the ingress of dust into the suction system. The presence of nozzles reduces the removal of dust from the material flow.

Figure 1 shows the bunker, a general view; figure 2 - view And figure 1.

The hopper contains a feed hopper 1 for feeding material through the receiving part 2, nozzles 3 installed on duct 4, and a fan 5. Nozzles 3 serve to supply finely dispersed liquid from pipeline 6 and tank 7.

In front of the back wall of the funnel, meeting the flow of material and air, a grating is installed with different angles of inclination of the upper and lower portions of it. The upper lattice section 8 consists of horizontal rails 9 arranged parallel to each other and inclined to the horizontal plane, and the lower lattice section 10 is made of rails 11 oriented along the generatrix of the funnel, the upper lattice section 8 being installed relative to the vertical plane at an angle smaller than the lower portion of the grid 10. On the back wall of the funnel, at the level of the upper grid section 8, perpendicular to the rails of the upper section of the plate 12 are rigidly fixed, Cyclone 13 is designed for air purification. The bumper apron 14 is installed in front of the dust intake area from the bunker by the fan 5 to reduce the ingress of dust into the aspiration system.

The device works as follows.

Bulk material is fed into the hopper hopper 1 of the hopper from the receiving part 2 and enters the protective and distribution flow of air and finely dispersed liquid, which flows through nozzles 3, respectively, through duct 4 from the fan 5 and pipe 6 from the tank 7. Next, the airflow of finely dispersed liquid and the bulk material passes between the horizontal rails 9 of the upper grid section 8, located at a distance I from the back wall of the funnel, and strikes the plates 12 mounted on the rear wall during Onka reducing dust removal from the stream. The distance to the lattice, between the horizontal rails of the upper part of the lattice and from the lattice to the funnel wall, is selected depending on the average particle size of the bulk material so that small particles and dust fractions fly through the lattice, and the larger ones, whose dust formation is minimal, are retained on the lattice and rolled on the lower portion of the grid 10.

In the lower lattice section 10, the distance between the laths 11 is narrowed downwards, which prevents an increase in the distance between rapidly moving particles of the material, provides a mode of material entry by the cohesive layer and its smooth descent to the outlet funnel outlet of the funnel. Larger particles are transported to the discharge hole of the funnel through the rails above the small particles moving along the wall of the funnel to the discharge hole, i.e. overlap the space above the small and dust fractions, helping to reduce dust generation and significantly reduce dust entering the aspiration system.

The use of the proposed bunker allows to ensure the norms of the maximum permissible concentration of dust in the air of the working area of the material handling area and reduce the cost of construction and operation of the aspiration system.

Claims (3)

1. A bulk material hopper containing a feed funnel, an air duct to form a protective distribution curtain, characterized in that, in order to reduce dusting, it is provided with a grating placed inside the feed funnel at its back wall consisting of two rigidly connected under obtuse angle to each other of the upper and lower portions, the first of which is set at a smaller angle than the second, to the vertical and made of one another parallel horizontal rails lying 0 each in a plane placed at an angle to the horizon, and the lower one of the rods oriented along the generatrix of the funnel. 2. A hopper according to claim 1, characterized in that perpendicular to the rails of this section of the plate are rigidly fixed on the back wall of the funnel at the level of the upper part of the grid. 3. A bunker according to claim 1, characterized in that it is provided with nozzles installed at the outlet end of the duct. Fig 7 ten ; / ppppppppppp., p p and p MJI and H II and and and and and and and and d II And TPPT I h P and and and I h P mr Fi & 2.