CN203880723U - Inclined double-layer grate device - Google Patents

Abstract

The utility model discloses an inclined double-layer fire grate device, which comprises an upper fire grate, a lower fire grate, a slag discharge plate and a spring; the height of the upper fire grate near the front wall is higher than the height of the side away from the front wall The sectional air supply method is adopted to fully burn the coal and prevent excessive air from entering the furnace, which increases the heat loss of the exhaust smoke; the spring is arranged under the slag discharge plate, and the spring is connected to the other side of the slag discharge plate and supports the The slag discharge plate, the slag discharge plate is set horizontally, the other side of the slag discharge plate is close to the side of the upper grate away from the front wall, when the coal slag exceeds a certain quality, the slag discharge plate will tilt downward, and the coal slag will slide into the ash chamber After slag removal, the slag discharge plate returns to the horizontal position under the action of the spring force; the gap between the lower grate is relatively close, and this setting can effectively prevent unburned or incompletely burned fine coal particles from the upper grate from falling directly into the ash Indoors, it can continue to burn in the lower grate to achieve the purpose of improving coal combustion efficiency and saving resources.

Description

A tilting double-layer fire grate device

technical field

The utility model relates to a fire grate structure for a combustion chamber of a barn, in particular to a fire grate structure for the combustion chamber of a tobacco barn.

Background technique

At present, the combustion chamber of the barn is basically a hand-fired furnace, and the grate is horizontally arranged at the bottom of the combustion chamber. The coal is manually put into the furnace through the furnace door, and spread on the grate to form a coal seam. The air required for combustion passes through the ventilation holes of the grate from the bottom of the grate, enters the coal seam from bottom to top, and participates in the combustion reaction. Most of the larger ash formed after coal combustion is manually picked out through the furnace door, while the fine ash falls into the ash pit through the gap of the grate and is cleared out by the ash door. This kind of grate has the following features: shortcoming:

(1) There is no segmented air supply structure. When the coal is just put into the furnace, the coal seam is the thickest and its ventilation resistance is the largest, so the amount of air sucked into the furnace is the least. At this time, a large amount of volatile matter in the coal is decomposed, and the volatile matter and The combustion of coke requires a large amount of air. Insufficient air volume will inevitably lead to incomplete combustion, resulting in large chemical incomplete combustion heat loss.

(2) During the operation of the combustion chamber, it is necessary to carry out frequent fire pulling operations and regular slag and ash removal.

(3) Since the furnace grate usually adopts a single layer, the fine coal particles whose size is smaller than the aperture of the grate fall into the ash chamber before being burned or completely unburned, which reduces the utilization rate of coal and causes a waste of resources.

Utility model content

In order to solve the above problems, the utility model provides a segmented air supply, automatic slag discharge, high coal utilization rate and automatic realization of preheating, drying, ignition, combustion, and burnout processes, without the need for firemen to frequently add coal and dial. Fire, hook ash, reducing the labor intensity of the fireman's inclined double-layer grate device.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An inclined double-layer fire grate device, including an upper fire grate embedded in the left and right walls and the front wall of the furnace wall, a lower fire grate embedded in the left and right walls of the furnace wall, and a rear wall hinged on the furnace wall The slag discharge plate on the top and the spring connected to the rear wall of the furnace wall at one end;

The upper grate is inclined, and the height of the upper grate near the front wall is higher than the height of the side away from the front wall, and the distance between the grate near the front wall and the grate is greater than The distance between the grate and the grate on the side away from the front wall;

The spring is arranged under the slag discharge plate, the other end of the spring is connected to the other side of the slag discharge plate and supports the slag discharge plate, the slag discharge plate is arranged horizontally, and the other side of the slag discharge plate is close to the upper grate and away from one side of the front wall;

The lower grate is arranged horizontally below the upper grate, and a plurality of furnace holes are evenly distributed on the lower grate.

Compared with the prior art, an inclined double-layer fire grate device of the present utility model has the following advantages:

1. The side of the upper grate close to the front wall has the thickest coal seam, and its ventilation resistance is the largest. At this time, a large amount of volatile matter in the coal is decomposed, and a large amount of air is required for the combustion of volatile matter and coke. Therefore, the distance between the grate and the grate on the side of the upper grate near the front wall is greater than the distance between the grate and the grate on the side far from the front wall, and the gap between the grate and the grate is larger , so that sufficient air can be provided to make it burn fully; for the coal seam on the side of the upper grate far away from the front wall is thinner, the gap between the grate is set to be small, which can effectively prevent excessive air from entering the furnace and causing the heat loss of exhaust smoke Increase.

2. It can discharge slag automatically, and the slag discharge plate remains horizontal under the action of spring force. When the coal slag on the slag discharge plate exceeds a certain quality, the slag plate will tilt downward, and the coal slag will slide down to the ash chamber, and the slag removal plate will be removed after slag removal Return to the horizontal position under the action of spring force.

3. A plurality of furnace holes with smaller apertures are evenly distributed on the lower grate, which can effectively prevent the unburned or incompletely burned fine coal particles from the upper grate from falling directly into the ash chamber, so as to save resources.

4. The inclined distribution of the upper grate automatically realizes the process of preheating, drying, ignition, burning, and burnout. It does not require the fireman to add coal, stir the fire, and hook ash frequently, which reduces the labor intensity of the fireman.

Description of drawings

Fig. 1 is the structural representation of a kind of inclined type double-deck fire grate device;

Fig. 2 is the structural representation of upper grate;

Fig. 3 is a structural schematic diagram of the lower grate.

In the accompanying drawings: 1—upper grate; 2—lower grate; 3—slagging plate; 4—spring; 5—furnace bar; 6—furnace hole; 7—ash chamber; Move the ash door; 10—furnace wall.

Detailed ways

As shown in Figure 1, an inclined double-layer grate device includes an upper grate 1 embedded in the left and right walls and the front wall of the furnace wall 10, and a lower grate embedded in the left and right walls of the furnace wall 10. 2. The slag discharge plate 3 hinged on the back wall of the furnace wall 10 and the spring 4 connected to the back wall of the furnace wall 10 at one end.

Wherein, the structure of the upper grate 1 is shown in Figure 2, the upper grate 1 is inclined, the height of the upper grate 1 near the front wall is higher than the height of the side away from the front wall, and the upper grate 1 is close to the front wall The distance between the fire bar 5 on one side and the fire bar 5 is greater than the distance between the fire bar 5 and the fire bar 5 on the side away from the front wall.

The spring 4 is arranged under the slag discharge plate 3, the other end of the spring 4 is connected to the other side of the slag discharge plate 3 and supports the slag discharge plate 3, the slag discharge plate 3 is arranged horizontally, and the other side of the slag discharge plate 3 Close to the side of the upper grate 1 away from the front wall.

The structure of the lower grate is shown in Figure 3, the lower grate 2 is horizontally arranged below the upper grate 1, a plurality of furnace holes 6 are evenly distributed on the lower grate 2, and the ash chamber 7 is formed under the lower grate 2 .

Coal is fed from the furnace door 8, placed on the inclined upper grate 1, and burnt in sections on the upper grate 1, and gradually slides down to the slag discharge plate 3 under the action of gravity during the combustion process, from the upper grate 1 The unburned or incompletely burned fine coal particles that fall will fall on the lower grate 2 to continue burning. The air enters through the movable ash removal door 9 and contacts with the coal on the fire grate to make it burn; The level of the slag discharge plate 3 that remains horizontal corresponds to the level. The ash after coal combustion can automatically (or under manual action) slide onto the slag discharge plate 3, when the coal slag on the slag discharge plate 3 exceeds a certain quality, the slag discharge plate 3 is inclined, and the ash slag slides down to the ash chamber 7, the ash slag produced by the lower fire grate 2 can be manually removed by the movable ash removal door 9.

The upper grate 1 is arranged obliquely, and the lower grate 2 is arranged horizontally. The coal on the upper grate 1 can automatically slide down the grate under its own gravity to realize the process of preheating, drying, igniting, burning, and burning out, which can reduce the number of times the fireman adds coal, stirs the fire, and hooks ash, and reduces The labor intensity of the fireman. The aperture of the furnace hole 6 on the lower fire grate 2 is less, which can effectively catch the fine coal particles that have not yet had time to burn or have not completely burned down from the upper fire grate 1 .

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (1)

1. An inclined double-layer fire grate device, characterized in that: it includes an upper fire grate (1) embedded in the left and right walls of the furnace wall and the front wall, and a lower fire grate embedded in the left and right walls of the furnace wall (2), the slag discharge plate (3) hinged on the back wall of the furnace wall and the spring (4) connected at one end to the back wall of the furnace wall; The upper grate (1) is inclined, the height of the upper grate (1) near the front wall is higher than the height of the side away from the front wall, and the upper grate (1) is near the front wall. The distance between the bar (5) and the bar (5) is greater than the distance between the bar (5) and the bar (5) on the side away from the front wall; The spring (4) is arranged under the slag discharge plate (3), the other end of the spring (4) is connected to the other side of the slag discharge plate (3) and supports the slag discharge plate (3), the slag discharge plate (3) Set horizontally, the other side of the slag discharge plate (3) is close to the side of the upper grate (1) away from the front wall; The lower grate (2) is horizontally arranged below the upper grate (1), and the height of the lower grate (2) is located at the upper position of the ash removal port of the furnace wall. A plurality of furnace holes (6) are arranged on the cloth.