CN209944302U

CN209944302U - Uniform-distribution biomass fuel combustion equipment

Info

Publication number: CN209944302U
Application number: CN201920846704.9U
Authority: CN
Inventors: 黄迁建
Original assignee: Fujian Dry Energy Industrial Equipment Technology Co Ltd
Current assignee: Fujian Dry Energy Industrial Equipment Technology Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-01-14
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses an even cloth biomass fuel combustion equipment, including equipment body and feeder, equipment body inside is equipped with combustion chamber and two-section combustion transition flue, the bottom of combustion chamber is equipped with the hood grate, feeder includes mount, hopper, spouts the material fan and locates a plurality of feeders in the hopper, the mount with the upper portion fixed connection of equipment body, the lower part of hopper is equipped with a plurality of discharging pipes, the air outlet of spouting the material fan passes through the pipeline and communicates with each the discharging pipe, in the utility model, at first, pay-off from the discharging pipe of hopper simultaneously through a plurality of feeders for fuel evenly distributed burns on the hood grate, has improved burning thermal efficiency greatly, and the flue gas that then produces is the secondary abundant burning in two-section combustion transition flue, has reduced CO and other hydrocarbon content in the high temperature flue gas, the effects of energy saving and environmental protection are achieved.

Description

Uniform-distribution biomass fuel combustion equipment

Technical Field

The utility model relates to a fire burning furnace equipment technical field, especially relate to an even cloth biomass fuel combustion apparatus.

Background

The biomass fuel equipment is heating equipment taking plant waste as a combustion medium, and is widely applied to various heat energy industries such as boilers, carbonization furnaces, drying furnaces, gasification furnaces, die casting machines, industrial furnaces, incinerators, smelting furnaces, kitchen equipment, drying equipment, food drying equipment, ironing equipment, baking finish equipment, road building mechanical equipment, industrial annealing furnaces, asphalt heating equipment and the like; the biomass fuel needs to be fully mixed with air in the combustion process so as to enable the fuel to be fully combusted. And the biomass fuel stove on the existing market does not adopt the mode of spreading the material with the even cloth of fuel on the hood grate, therefore the fire hole appears easily that the cloth is inhomogeneous, makes the burning insufficient and produce a large amount of excess air in the combustion chamber, and directly discharges through the flue, causes the waste of the energy, is unfavorable for the protection of environment moreover, neither energy-conservation nor environmental protection.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an even cloth biomass fuel combustion apparatus to solve the above-mentioned problem.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

the utility model provides an even cloth biomass fuel combustion equipment, includes the equipment body and locates the feeder on the equipment body, inside combustion chamber and the two-section transition flue of being equipped with of equipment body, the one end of two-section transition flue of burning with the combustion chamber communicates with each other, and the other end of two-section transition flue of burning is equipped with the high temperature exhanst gas outlet, the bottom of combustion chamber is equipped with the hood grate, equipment body bottom is equipped with one and is used for to the wind chamber of hood grate admission air, the wind chamber is equipped with a plurality of air regulating doors that can adjust the amount of wind alone, the furnace gate has been seted up to one side of the bottom of combustion chamber.

Furthermore, the bottom of the equipment body is provided with at least one secondary air chamber for introducing air into the two-section combustion transition flue, a secondary air pipe is arranged above the secondary air chamber, the secondary air chamber is communicated with the two-section combustion transition flue through the secondary air pipe, and a secondary air adjusting door for adjusting air volume is arranged on the secondary air chamber.

Furthermore, an air supply fan is arranged on one side of the bottom of the equipment body and connected with the air chamber through a pipeline for supplying air.

Further, feeder includes mount, hopper, spouts the material fan, and locates a plurality of feeders in the hopper, the mount with the upper portion fixed connection of equipment body, the hopper passes through the mount is fixed in on the equipment body, just the lower part of hopper is equipped with a plurality of discharging pipes, and each the discharging pipe all with the combustion chamber intercommunication, the air outlet of spouting the material fan passes through pipeline and each the discharging pipe intercommunication, each the feeder is all along corresponding each the axial setting of discharging pipe, and one end all with mount fixed connection.

Furthermore, a plurality of discharging pipes arranged at the lower part of the feeding hopper are distributed along an annular shape, and discharging ports of the discharging pipes are arranged right opposite to the hood fire grate.

Furthermore, each the feeder is single screw feeder, including motor, shaft coupling, spiral feeding shaft, the motor is fixed in on the mount, and the output shaft is inside to be set up towards the hopper, spiral feeding shaft one end is passed through the shaft coupling with the output shaft fixed connection of motor, the other end of spiral feeding shaft extends into rather than corresponding the discharging pipe sets up, and is provided with helical blade at the tip.

Further, the number of the air adjusting doors is three.

Compared with the prior art, the utility model, following beneficial effect has:

1) the fuel is fed to each discharging pipe of the feeding hopper from the feeding hopper through the plurality of feeding machines simultaneously, under the action of the material spraying fan, the fuel is blown out of each discharging pipe of the feeding hopper, so that the fuel is scattered loosely, and meanwhile, as the discharging pipes of the feeding hopper are distributed along the ring shape and the discharging ports are arranged right opposite to the hood fire grate, the fuel scattered on the hood fire grate is distributed more uniformly;

2) the pressure of the air bin is independently adjusted through each air adjusting door to send high-pressure air to the bottom of the hood fire grate, and the high-pressure air enters through the air inlet of the hood fire grate, so that large fuel falling on the hood fire grate is completely mixed with the air, a fire hole is not easy to appear during combustion, meanwhile, small-particle fuel enters the combustion chamber to be combusted in the air, the residence time of the small-particle fuel in the combustion chamber is prolonged, and the combustion heat efficiency is greatly improved; meanwhile, the air delivery amount is strictly controlled by the air supply fan, and the excessive air entering the combustion chamber is reduced, so that nitrogen reacts with oxygen at high temperature during combustion to generate nitrogen oxide, and the nitrogen oxide is reduced, and the emission standard of low-nitrogen combustion is reached;

3) the flue gas generated after combustion enters the two-section combustion transition flue, and air is fed into the two-section combustion transition flue from the air pipe through the independent secondary air damper of the secondary air chamber to support combustion, so that CO and hydrocarbon in the flue gas are combusted secondarily, the fuel is combusted more fully, the content of CO or other hydrocarbon in the high-temperature flue gas is greatly reduced, and the effects of energy conservation and environmental protection are achieved.

Drawings

Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of the embodiments of the invention when taken in conjunction with the accompanying drawings, in which:

fig. 1 is a longitudinal section schematic view of the biomass fuel combustion equipment with uniform distribution of the utility model.

Fig. 2 is a schematic transverse section of the biomass fuel combustion device with uniform distribution of the utility model.

In the figure: the device comprises a device body-1, a feeding device-2, a combustion chamber-11, a two-section combustion transition flue-12, an air cap fire grate-13, an air chamber-14, a furnace door-15, an air supply fan-16, a secondary air chamber-17, a fixing frame-21, a feeding hopper-22, a material spraying fan-23, a feeding machine-24, a high-temperature flue gas outlet-1201, an air adjusting door-1401, a secondary air adjusting door-1701, a secondary air pipe-1702, a discharging pipe-2201, a motor-2401, a coupling-2402, a spiral feeding shaft-2403 and a spiral blade-2404.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Examples

Referring to fig. 1-2, the utility model provides a biomass fuel combustion device with uniform distribution, the structure of the biomass fuel combustion device comprises a device body 1 and a feeding device 2 arranged on the device body 1, a combustion chamber 11 and a two-stage combustion transition flue 12 are arranged in the device body 1, one end of the two-stage combustion transition flue 12 is communicated with the combustion chamber 11, the other end of the two-stage combustion transition flue 12 is provided with a high-temperature flue gas outlet 1201, the bottom of the combustion chamber 11 is provided with a hood grate 13, the bottom of the device body 1 is provided with a wind chamber 14 for introducing air to the hood grate 13, the wind chamber 14 is provided with three air adjusting doors 1401 capable of independently adjusting the air quantity, one side of the bottom of the combustion chamber 11 is provided with a furnace door 15, the bottom of the device body 1 is provided with a secondary wind chamber 17 for introducing air into the two-stage combustion transition flue 12, a secondary air pipe 1702 is arranged above the secondary air chamber 17, the secondary air chamber 17 is communicated with the two-section combustion transition flue 12 through the secondary air pipe 1702, a secondary air adjusting door 1701 for adjusting air volume is arranged on the secondary air chamber 17, an air supply fan 16 is further arranged on one side of the bottom of the equipment body 1, the air supply fan 16 is connected with the air chamber 14 through a pipeline for supplying air, the feeding device 2 comprises a fixing frame 21, a feeding hopper 22, a material spraying fan 23 and a plurality of feeding machines 24 arranged in the feeding hopper 22, the fixing frame 21 is fixedly connected with the upper part of the equipment body 1, the feeding hopper 22 is fixed on the equipment body 1 through the fixing frame 21, a plurality of discharging pipes 2201 are arranged on the lower part of the feeding hopper 22, each discharging pipe is communicated with the combustion chamber, and the air outlet of the material spraying fan 23 is communicated with each discharging pipe 2201 through a pipeline, each feeder 24 is arranged along the axial direction corresponding to each discharge pipe 2201, and one end of each feeder is fixedly connected with the fixed frame 21.

In this embodiment, a plurality of discharge pipes 2201 arranged at the lower part of the feeding hopper 22 are annularly distributed, and discharge ports of the discharge pipes are arranged opposite to the hood fire grate 13; so that the biomass fuel is uniformly distributed in a ring shape when the biomass fuel is fed through each feeding machine 24 and falls from each discharge pipe 2201 of the feeding hopper 22 onto the hood grate 13 at the bottom of the combustion chamber 11.

In this embodiment, the feeding machine 24 is preferably a single-screw feeding machine, and includes a motor 2401, a coupling 2402, and a screw feeding shaft 2403, where the motor 2401 is fixed on the fixing frame 21, and an output shaft is disposed toward the inside of the feeding hopper 22, one end of the screw feeding shaft 2403 is fixedly connected with the output shaft of the motor 2401 through the coupling 2402, the other end of the screw feeding shaft 2403 extends into the discharging pipe 2201 corresponding thereto, and a screw blade 2404 is disposed at an end portion of the screw feeding shaft; through the work of each single screw feeder of simultaneous control for the fuel output quantity difference of each discharging pipe of hopper is little, avoids appearing the uneven condition of feed and takes place, makes the distribution of fuel on the hood grate more even.

In this embodiment, the material spraying fan 23 and the air supply fan 16 are both blowers.

When the biomass fuel feeder is used, biomass fuel is fed into the feeding hopper 22, the biomass fuel is pushed out from the discharge pipes 2201 of the feeding hopper 22 and falls onto the hood fire grate 13 by starting the feeding machines 24 in the feeding hopper 22, the feeding machines 24 work simultaneously, the spraying fan 23 is started to spray the biomass fuel out from the discharge pipes 2201 of the feeding hopper 22, and the discharge pipes 2201 of the feeding hopper 22 are annularly distributed right above the hood fire grate 13, so that the blanking on the hood fire grate 13 is uniformly distributed; the air supply fan 16 is started, the air pressure in the air chamber 14 is adjusted through each air adjusting door 1401, high-pressure air is fed to the bottom of the hood fire grate 13, and the high-pressure air enters through the air inlet of the hood fire grate 13 and is completely mixed with the biomass fuel uniformly distributed on the hood fire grate 13 to ignite and burn; the biomass fuel is completely combusted, the combusted flue gas enters a two-section combustion transition flue 12, air is fed into the two-section combustion transition flue 12 for combustion supporting through an air pipe 1702 through a secondary air damper 1701 of a secondary air chamber 17, CO and hydrocarbon in the flue gas are subjected to secondary combustion, so that the heat efficiency is improved, NOX is reduced, and the fully combusted high-temperature flue gas is led out through a high-temperature flue gas outlet 1201 and is supplied to a matched boiler, a hot blast stove, a hot water stove, a carbide furnace, a drying furnace, an industrial furnace, an incinerator, a smelting furnace, kitchen equipment, drying equipment and the like.

The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Claims

1. The utility model provides an even cloth biomass fuel combustion apparatus, includes equipment body (1) and locates feeder (2) on equipment body (1), its characterized in that: the improved energy-saving stove is characterized in that a combustion chamber (11) and a two-section combustion transition flue (12) are arranged inside the equipment body (1), one end of the two-section combustion transition flue (12) is communicated with the combustion chamber (11), the other end of the two-section combustion transition flue (12) is provided with a high-temperature flue gas outlet (1201), the bottom of the combustion chamber (11) is provided with a hood grate (13), the bottom of the equipment body (1) is provided with an air chamber (14) used for introducing air into the hood grate (13), the air chamber (14) is provided with a plurality of air adjusting doors (1401) capable of independently adjusting air volume, and one side of the bottom of the combustion chamber (11) is provided with a stove door (15).

2. The biomass fuel combustion device with uniform distribution according to claim 1, wherein at least one secondary air chamber (17) for introducing air into the two-section combustion transition flue (12) is arranged at the bottom of the device body (1), a secondary air pipe (1702) is arranged above the secondary air chamber (17), the secondary air chamber (17) is communicated with the two-section combustion transition flue (12) through the secondary air pipe (1702), and a secondary air damper (1701) for adjusting air volume is arranged on the secondary air chamber (17).

3. The biomass fuel combustion device with uniform distribution according to claim 1, wherein an air supply fan (16) is further arranged on one side of the bottom of the device body (1), and the air supply fan (16) is connected with the air chamber (14) through a pipeline for supplying air.

4. The uniform distribution biomass fuel combustion device as claimed in claim 1, the feeding device (2) comprises a fixed frame (21), a feeding hopper (22) and a material spraying fan (23), and a plurality of feeders (24) arranged in the hopper (22), the fixed frame (21) is fixedly connected with the upper part of the equipment body (1), the feeding hopper (22) is fixed on the equipment body (1) through the fixing frame (21), a plurality of discharge pipes (2201) are arranged at the lower part of the feeding hopper (22), and each discharge pipe is communicated with the combustion chamber, an air outlet of the material spraying fan (23) is communicated with the discharge pipes (2201) through pipelines, the feeding machines (24) are arranged along the axial direction corresponding to the discharge pipes (2201), and one end of each feeding machine is fixedly connected with the fixing frame (21).

5. The biomass fuel combustion device with uniform distribution according to claim 4, wherein a plurality of discharging pipes (2201) arranged at the lower part of the feeding hopper (22) are distributed along a ring shape, and discharging ports of the discharging pipes (2201) are arranged opposite to the hood grate (13).

6. The biomass fuel combustion equipment with uniform distribution according to claim 4, wherein each feeder (24) is a single-screw feeder and comprises a motor (2401), a coupler (2402) and a screw feeding shaft (2403), the motor (2401) is fixed on the fixing frame (21), an output shaft of the motor is arranged towards the inside of the feeding hopper (22), one end of the screw feeding shaft (2403) is fixedly connected with the output shaft of the motor (2401) through the coupler (2402), the other end of the screw feeding shaft (2403) extends into the discharge pipe (2201) corresponding to the screw feeding shaft, and a screw blade (2404) is arranged at the end of the screw feeding shaft.

7. The uniform distribution biomass fuel combustion device as recited in claim 1, wherein the number of the damper doors (1401) is three.