SU48968A1 - Shahty furnace - Google Patents

Description

In the proposed shaft furnace, a step grate was used, the elements of which were made in the form of rotary ridges on the axes.

In order to constantly change the working crests, loosen the fuel and clean the air passage channels, the common axial plane of the rollers is given such a slope that the fuel is lowered along the shaft causing them to turn.

In FIG. 1 shows a longitudinal vertical section of a shaft furnace; FIG. 2 is a cross section of it; FIG. 3-partial section of the grate.

The grate grating is inclined to the horizon, approximately at an angle of 76 °, and composed of comb rollers 11, freely vrash, ayush, ikhs on tubular axles 72, mounted on a retractable trolley frame 13. The trolley moves on wheels 14 on rails or beams 15.

The firebox is intended to burn raw sod peat in half with milling.

First, dry fuel-wood, chips, shavings are thrown into the furnace and ignited until a heated medium is formed.

Then through the box / equipped with loading valves 2 and a lid 5,

lumpy peat is poured on hot fuel in sufficient quantity and milled peat is poured on it through a box, then peat lumpy and so on up to the very top of mine 6 just below valve 2 of the charging box 7. As the fuel is deposited in the mine 6, peat is added so that the mine was always full to the top. After descending through the combustion chamber shaft, the peat is sufficiently dried, and the water vapor generated in this way rises up and out through the annular channel 4 located in the charging part of the shaft into the pipe 5 to the air.

Peat loaded into the mine reaches the grate and, being pressed tightly against the tubular rollers 77 ,. as it goes down, it turns them on tubular axes x 72, so that the rollers are constantly in motion.

The ridges of the rollers 77 adjoin each other across the entire width of the furnace (Fig. 2, 3) with gaps between them for free rotation and form a continuous almost vertical grate that keeps peat from falling into the ash pit, but does not prevent air from passing freely to fuel through the gaps 25 between the ridges of the rollers (Fig. 3). When the peat is deposited down, the rollers are turned on the tubular axles and cooled by blown under the grate.

Due to the constant turning of the rollers, the grate is completely free of slag accumulations and ash, and therefore there are no obstacles to the free passage of air, which is very important for perfect burning of fuel.

With ash on the floor 22 (with a slope to the horizon 68), the ash slides onto the hinged drum, together with the grate on a common retractable trolley, and the rotary drum 18 falls into it.

The peat in the lower part of the furnace in front of the grate is hot and gases from it go first under the roof 7 to the woods 8, where they are connected with the additional air coming from the holes 9, then they are directed under the boilers or other devices.

Into the air, air is blown through a pipe / 7 through the side wall of the furnace.

The device of a vertical shaft b with a height of approximately not less than 4 m to the arch 7 of the flue gas 8, facilitates the drying of wet peat with the removal of water vapor through an annular channel into the pipe 5.

The location of the hog 8 for removal of hot gases in the lower part of the furnace contributes to the fact that the gases will have less moisture than if gases were removed from the upper part of the furnace shaft.

Peat slides freely down the grate on rollers rotating under pressure from the fuel and constantly raking up their crests without allowing the formation of slag and sol accumulations. Therefore, the air freely and continuously flushes the fuel through the gaps 25 between the ridges of the rollers, which cannot be achieved in horizontal grids.

Due to the almost vertical arrangement of the grate roller grate, the amount of air blown through the fuel will be constant, because the layer of fuel (its thickness) does not change and remains always constant too, which is difficult to achieve on horizontal grids.

The device with a sliding grate 70 and a slag drum / b on one frame J3 is very convenient in terms of repair. Repairs can be made quickly without complicated operations, subject to the availability of spare parts for the grate and slag drum. All mechanisms operate automatically, not requiring engines.

The device of the mine b of the furnace, extending downwards, contributes to the uniform flow of fuel without delay and freezes.

To observe the burning in the furnace and the grate bars, there is a hermetic ash pan / P equipped for this purpose with a window 20; door 2 / serves to scoop up ash in the bunker /. Channels 24 in the side walls of the furnace are intended to supply additional heated air to the furnace.

The subject matter of the invention.

Claims (3)

1. Mine furnace, different with using a stepped grate, which grates are made in the form of comb rollers //, rotatable on axis x / 2, the common axial plane of which rollers is given such an inclination that the fuel going down along the shaft causes them to rotate, in order to constantly change the working ridge elements raz- loosening fuel and cleaning channels for air passage. 2. In the furnace of claim 1, use the drum 76 for removal of waste, placed together with the grate on a common retractable trolley. 3. In the furnace of claim 1, use in the loading section of the shaft of the channel 4 to drain moisture from the fuel into the pipe 5. SRIG 1 Srig. d