Anti-backfire stable combustion device for biomass grate boiler

Abstract

The utility model provides an anti-backfire stable combustion device for a biomass grate boiler, and relates to the technical field of boilers, the anti-backfire stable combustion device comprises a feed bin, an air distribution branch pipe, a hearth and a grate, the surface of the feed bin is fixedly provided with a discharge nozzle, and the output end of the discharge nozzle is provided with an air distribution mother pipe. The air distribution branch pipe is arranged between the air distribution main pipe and the discharging nozzle and blows air downwards in an inclined mode at a certain angle, the blown air has a certain air speed and penetrating power, flames are made to burn in the air direction, the flames are prevented from reversely burning to the feeding bin, the structure is simple, and usability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a flashback prevention and stable combustion device for a biomass grate boiler. Background Art

[0002] When the grate boiler burns biomass fuel, due to the high volatility, light specific gravity and easy ignition of the fuel, it starts to burn before the fuel falls on the grate surface, and the flame can easily burn back to the silo, affecting the safe operation of the boiler. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: a device for preventing backfire and stabilizing combustion of a biomass grate boiler, comprising a feeding bin, an air distribution branch pipe, a furnace and a grate, a discharge nozzle is fixedly installed on the surface of the feeding bin, and an air distribution mother pipe is installed at the output end of the discharge nozzle.

[0005] Preferably, the feed bin is arranged in front of the furnace above the grate. Here, the design of the grate serves to discharge the fuel onto the grate for combustion through the discharge nozzle.

[0006] Preferably, one end of the air distribution branch pipe is connected to the surface of the air distribution mother pipe, and the other end is connected to the surface of the discharge nozzle. Here, the design of the air distribution branch pipe facilitates the air of the blower to blow to the fuel on the grate, thereby helping the fuel to burn.

[0007] Preferably, the air distribution branch pipe is inclined downward. Here, the downward inclined design of the air distribution branch pipe enables the flame to burn along the direction of the blast, thereby avoiding the situation where the flame burns back into the silo.

[0008] Compared with the prior art, the advantages and positive effects of the utility model are:

[0009] 1. In the utility model, a discharge nozzle and an air distribution main pipe are provided, and an air distribution branch pipe is provided between the air distribution main pipe and the discharge nozzle. The branch pipe blows air obliquely downward at a certain angle. The air blowing has a certain wind speed and penetrating power, so that the flame burns along the wind direction to avoid the flame from burning back to the silo. The utility model has a simple structure and strong usability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model provides an overall structural schematic diagram of a flashback prevention and stable combustion device for a biomass grate boiler.

[0011] Legend:

[0012] 1. Feeding bin; 2. Air distribution main pipe; 3. Air distribution branch pipe; 4. Discharge nozzle; 5. Grate; 6. Furnace. DETAILED DESCRIPTION

[0013] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0014] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0015] Embodiment 1

[0016] See also Figure 1 The utility model provides a technical solution: a device for preventing backfire and stabilizing combustion of a biomass grate 5 boiler, comprising a feeding bin 1, an air distribution branch pipe 3, a furnace 6 and a grate 5. A discharge nozzle 4 is fixedly installed on the surface of the feeding bin 1. The feeding bin 1 is arranged in front of the furnace 6 above the grate 5. The design of the grate 5 serves to discharge the fuel on the grate 5 for combustion through the discharge nozzle 4. An air distribution mother pipe 2 is installed at the output end of the discharge nozzle 4. One end of the air distribution branch pipe 3 is connected to the surface of the air distribution mother pipe 2, and the other end is connected to the surface of the discharge nozzle 4. The design of the air distribution branch pipe 3 serves to facilitate blowing the wind of the blower to the fuel on the grate 5, thereby helping the fuel to burn. The air distribution branch pipe 3 is inclined downward. The downward inclined design of the air distribution branch pipe 3 serves to make the flame burn along the direction of the blast, thereby avoiding the situation where the flame burns back into the feeding bin 1.

[0017] Working principle: The fuel in the feeding bin 1 falls onto the chain grate 5 through the discharge nozzle 4 and is burned. An air distribution main pipe 2 is arranged on the discharge nozzle 4, and an air distribution branch pipe 3 is arranged between the discharge nozzle 4 and the air distribution main pipe 2. The air distribution branch pipe 3 blows air downward at a certain angle, with a certain wind speed and penetration ability, so that the flame burns along the blast direction to avoid the flame burning back to the feeding bin 1.

[0018] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A device for preventing backfire and stabilizing combustion of a biomass grate (5) boiler, comprising a feed bin (1), an air distribution branch pipe (3), a furnace (6) and a grate (5), characterized in that: A discharge nozzle (4) is fixedly mounted on the surface of the feed bin (1), and an air distribution main pipe (2) is mounted on the output end of the discharge nozzle (4). One end of the air distribution branch pipe (3) is connected to the surface of the air distribution main pipe (2), and the other end is connected to the surface of the discharge nozzle (4), and the air distribution branch pipe (3) is inclined at a downward angle.

2. The anti-flashback stable combustion device for a biomass grate (5) boiler according to claim 1 is characterized in that: The feeding bin (1) is arranged in front of the furnace (6) above the grate (5).

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