SU86169A1 - Shakhtna outgoing low gas firebox - Google Patents

Description

The subject of the invention is a low-power, portable half-gas mine, designed for burning lump fuel of various sizes on an inclined grate.

The proposed furnace differs from the known use of the grate with a variable angle of inclination, which results in efficient burning of slags and reduction of chemical and mechanical underburning. To control the amount of primary air in the toik, a damper is used, which can be mixed, along the grate, but it also produces the closing of the gaps with fine grate bars for air flow. In order to dry the fuel, the upper part of the grid is made without air gaps. The supply of small-volume fuel to the furnace is made through a mechanically controlled valve.

FIG. 1. shows a semi-gas furnace in a longitudinal section; in fig. 2 is a view along arrow B with a partial section along A-A.

The semi-gas firebox has an external brick chamber 1, in the masonry of which channels 2 and 5 are made, which serves to supply secondary air to the output neck 4 of the firebox.

In the chamber / furnace, there is an inclined grate 5, the upper end of which is brought out of the firebox and equipped with a lever 6, by means of which the upper end of the grate can be raised or lowered manually. The lower end of the grille is hinged to the frame 7 and makes it possible to vary the angle of inclination of the grill, thus achieving more efficient slag burning and reducing chemical and mechanical underburning of the fuel.

To regulate the amount of primary air supplied under the inclined grate 5, a flap 8 is installed below them, made in the form of flat spools. The flap is moved along the grille by hand using the lever 9. By moving the flap, the gaps between the grate bars for air passage are closed.

There is a brick protrusion 10 in the form of a visor in the rear wall of the chamber for holding in the ash furnace.

The upper part // of the grate 5 is made in the form of a solid slab, whereby the fuel is dried before entering the grate.

The firebox at the mouth of the loading box 12 is equipped with a rotary valve / on the M axis, which is fitted with a manual control lever 15 equipped with a counterweight 16. To load fine fuel, the valve M axis with an additional lever 17 is connected to the crank pin 18/5 of the drive shaft 20; moreover, to adjust the amount of fuel loaded into the furnace, the finger 18 is made adjustable in the radial slot of the crank 19.

Fuel from the loading box 12 through the valve 13 enters the upper part // of the inclined grate 5, where it is dried, after which it slides down onto the grate and then onto the grate 21.

The opening of the valve 13 in the case of coarse fuel is performed periodically manually by the lever 15; with fine fuel (fine coal, milled peat, etc.), the opening of valve 13 occurs from a mechanical drive. In this case, the valve 13 is opened by means of a driving mechanism. Vrasualny movement from the latter is transmitted to the drive shaft 20, which informs its crank 19 and the finger 18, while making a circular movement around the axis of the crank. At each turn, the finger comes into contact with the lever 17 and deflects it through a certain angle, and since the flat valve 13 is rigidly connected with the lever 17, it also deflects by a corresponding angle. So

Fig

orazom, when the crank 19 is rotated, the valve 13 periodically opens, and in the presence of a counterweight 16 on the lever 15, it is periodically closed. Regulation of the amount of fine fuel to be loaded is made by inverting the finger 18 in the radial slot of the crank 19.

Depending on the mode of operation of the furnace, the type and quality of fuel, the grate 5 is attached manually with different noMouui lever 6 different angles of inclination. When the lever 6 is mixed upwards, the front end of the grate 5 rises, and when it is moved down, the front end is lowered. Thus, such an angle of inclination of the grate 5 is selected at which the most efficient slag burning and the lowest chemical and mechanical underburning of fuel will occur with this fuel.

In accordance with the mode of operation of the furnace, the primary air, through the valve 22, is distributed under the grill and passes into the gaps between the grates 5 and 21.

There are no gaps on the upper part of the grille 5, therefore the fuel is heated here, then the release of volatile matter and charring. In the middle and lower parts of the grate, incomplete combustion of the fuel occurs due to the lack of primary air. To regulate the process of burning fuel, the amount of primary air is regulated, flowing through the gaps between the grate B, a layer of hot fuel. This is carried out by mixing along the grill 5 of the flat shutter 8, which in this case produces overlapping gaps between the grate bars and, therefore, changes the living sections for the passage of air.

The complete combustion of the gaseous products in the furnace takes place in its neck 4, where additional secondary air is introduced through channels 2 and 5.

The subject invention

Claims (5)

1. The small out-of-pocket shafts for burning lump fuel of various sizes on an inclined grate, is different from the fact that, in order to change the angle of the grate, to achieve effective slag burning and to reduce chemical and mechanical short-hatch, the rear end of the hinge grid it is fixed in the frame, and the front one is connected to the lever, with the help of which the front end of the grille can be raised or lowered. 2. The form of the firebox according to claim 1, characterized in that, in order to regulate the amount of primary air supply, a damper is used, flipped along and blocking the gaps between the grate bars for air passage. 3. The form of the firebox according to claims. 1 and 2, characterized in that, in order to dry the fuel before it enters the grate, the upper part of the grate is made in the form of a solid slab. 4. Topka but nn. 1-3, using a rotary flat valve at the mouth of the loading box, carrying a manual control lever on the axis, provided with a counterweight, characterized in that, for the purpose of continuous loading of fine fuel, the valve axis with an additional lever is coupled to the finger of the crankshaft of the drive shaft. 5. The form of the firebox according to claim 4, characterized in that, in order to regulate the amount of fine fuel to be loaded, the finger is made adjustable in the radial slot of the crank. X9 86169