RU173974U1 - FIRM UNIT SOLID FUEL FOR DRYING EQUIPMENT - Google Patents

Abstract

The utility model relates to equipment for the combustion of solid fuels and can be used as a heat source for drying equipment. The solid fuel furnace block for drying equipment contains a housing, in which the roof has an inner wall made of refractory material, a furnace chamber, the side walls of which are made of refractory brick, a grate, separating the furnace chamber into an ash pan and a combustion chamber, an ash pan maintenance hatch, an air duct, while the inner wall of the roof is made of a refractory plate. The technical result is aimed at facilitating the design and reducing manufacturing time. 1 s.p. f-ly, 1 ill.

Description

The utility model relates to equipment for the combustion of solid fuels and can be used as a heat source for drying equipment.

The solid fuel combustion unit in the drying lines is used as a manufacturer of a drying agent (flue gas), diluted with air to the desired temperature and supplied to drying equipment, such as a drying drum, by means of a fan or smoke exhaust. The energy source is the heat released during the combustion of solid fuels: firewood, peat.

The prior art furnace blocks for burning solid fuel, for example, patent No. 2307982, IPC F23B 60/02, F23H 3/02, publ. 10.10.2007, a furnace with a horizontal grate for burning solid fuels, Golovkov SI, Koperin I.F., Naydenov V.I. Energy use of wood waste. M .: Forest industry, 1987, pp. 46-47.

Known firebox for generating thermal energy by burning solid fuel, utility model patent No. 106936, IPC F23B 30/00, publ. 07/27/2011. We take the known device for the closest analogue. The known device comprises a housing, a combustion chamber, flat and cylindrical walls of the combustion chamber made of refractory bricks, a grate, separating the combustion chamber into an ash pan and a combustion chamber, an ash pan maintenance hatch, an air duct.

A disadvantage of the known device is the large weight of the structure and the long manufacturing time associated with the increased complexity of the brickwork of the inner walls of the furnace block.

The technical result is aimed at facilitating the design and reducing manufacturing time.

The technical result is achieved due to the fact that the proposed solid fuel furnace for drying equipment, comprising a housing, in which the roof contains an inner wall made of refractory material; containing a combustion chamber, the side walls of which are made of refractory bricks, a grate that separates the combustion chamber into an ash pan and a combustion chamber, an ash pan maintenance hatch, an air duct, and the inner roof wall is made of a fireproof plate. Mostly the duct is made in the form of a chamber located inside the housing, the side walls of which are made of a refractory plate, including vertical separation walls of a refractory plate with holes at different heights.

The described device is illustrated by the following graphic material.

In FIG. 1 shows a section of a solid fuel combustion unit.

The solid fuel combustion unit for drying equipment contains a housing 1, a combustion chamber 2, the side walls of which are made of brick, a grate 3 separating the combustion chamber 2 into an ash pan 4 and a combustion chamber 5, an ash pan maintenance hatch with a latch, an air duct 7, a door 8 for loading solid fuel into the combustion chamber 5. Housing 1 is a metal base coated with heat-insulating material, for example mineral wool, and is sheathed with galvanized steel (not shown in Fig.). The roof of the housing 1 contains an inner wall 9 made of refractory material. The roof of the housing connected to the inner wall 9 may be removable or non-removable. The combustion chamber 2 and the air duct 7 are interconnected inside the housing 1. The air duct 7 is made in the form of a chamber located inside the housing 1, the side walls 10 of which are made of a refractory plate, including vertical separation walls 11, 12 of the refractory plate with holes 13, 14 on different heights. The duct 7 includes an outlet pipe 15. The separation walls 11 and 12 form a labyrinth gas outlet channel connecting the combustion chamber 2 and the outlet pipe 15. The duct 7 contains service hatches 16 in the lower part, through which the accumulated ash and slag are removed. The graphic material depicts two vertical dividing walls, however, their number may be different. Fireclay bricks are used as refractory bricks.

The proposed device operates as follows.

The solid fuel is manually loaded through the door 8 into the combustion chamber 5, placed on the grate 3 and fired. Fresh air enters through the valve in the hatch 6 to the ash pan 4, and then through the grate 3 to the fire, thereby ensuring efficient combustion of solid fuel. Using a valve in the hatch 6, the volume and temperature of the flue gases generated during the combustion of solid fuel are controlled by changing the amount of air being mixed. The flue gas from the combustion chamber 2 enters the duct 7, where, bypassing the separation walls 11 and 12, it constantly changes direction, which contributes to the fact that the sparks contained in it are quenched, and soot and slag are deposited. Thus, at the exit from the proposed solid-fuel combustion unit, a pure drying agent is obtained (without sparks, ash and soot). The implementation of the inner wall of the roof 9 of the refractory slab greatly facilitates the design, since the mass of the slab is less than the mass of bricks. Also, this design significantly reduces the manufacturing time, since the plate is attached to the roof of the housing 1 using special glue.

The execution of the side walls 10 and the vertical dividing walls 11, 12 of the duct 7 from the refractory plate also greatly simplifies the design and shortens the manufacturing time compared to its execution of brick.

It is obvious that the proposed solid fuel combustion unit for drying equipment makes it easier to design and reduce its manufacturing time.

Claims (2)

1. A solid fuel furnace block for drying equipment, comprising a housing, the roof of which contains an inner wall made of refractory material; containing a combustion chamber, the side walls of which are made of refractory bricks, a grate that separates the combustion chamber into an ash pan and a combustion chamber, an ash pan maintenance hatch, an air duct, characterized in that the inner wall of the roof is made of a refractory stove. 2. The furnace block according to claim 1, characterized in that the duct is made in the form of a chamber located inside the housing, the side walls of which are made of a refractory plate, including vertical separation walls of the refractory plate with holes at different heights.

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