CN212299054U - Hearth of combustion furnace - Google Patents
Hearth of combustion furnace Download PDFInfo
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- CN212299054U CN212299054U CN202020926969.2U CN202020926969U CN212299054U CN 212299054 U CN212299054 U CN 212299054U CN 202020926969 U CN202020926969 U CN 202020926969U CN 212299054 U CN212299054 U CN 212299054U
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Abstract
The utility model belongs to the technical field of the combustion apparatus technique and specifically relates to a furnace of burning furnace fires, including a combustion section of thick bamboo, air outlet, feed mechanism and air supply subassembly, feed mechanism's discharge gate and a combustion section of thick bamboo intercommunication, a combustion section of thick bamboo with air outlet body coupling and intercommunication, be equipped with the combustion chamber in the combustion section of thick bamboo, the combustion chamber is radius platform form, combustion chamber lower part periphery is equipped with the baffle that admits air of a radius platform form, the combustion chamber bottom is equipped with the combustion baffle, the combustion baffle forms the gas storage space with the baffle that admits air and a combustion section of thick bamboo inner wall, evenly be provided with a plurality of intake pipes on the baffle that admits air, the air inlet has been seted up on the combustion section of thick bamboo lateral wall, air inlet and gas storage space intercommunication, air inlet and air supply subassembly intercommunication, the utility model discloses can solve the, Insufficient combustion, low efficiency and the like.
Description
Technical Field
The utility model relates to a combustion apparatus technical field, specific field is a furnace that fires burning furnace.
Background
The biomass particle fuel is a typical biomass solid forming fuel, has the advantages of high efficiency, cleanness, easy ignition, near zero emission and the like, can replace fossil fuels such as coal and the like to be applied to civil fields such as cooking, heating and the like and industrial fields such as boiler combustion, power generation, drying and the like. With the improvement of the environmental protection requirement, the biomass granular fuel is rapidly developed and applied at home and abroad in recent years, and particularly, the use of a coal furnace is forbidden in 2018 in the dryer industry, and natural gas, diesel oil, a rice chaff furnace, a biomass granular furnace and the like are used instead.
The biomass granular fuel in China mainly takes straws as main materials, the types of the raw materials are different, and the combustion characteristics of the fuel are different due to geographical position and environmental difference. The combustion process of the biomass pellet fuel can be divided into 5 stages of drying and dehydration, volatile analysis, volatile combustion, coke combustion and burnout. At present, the straw biomass granular fuel in China has high ash content and is easy to slag, and the phenomena of unstable combustion, insufficient combustion, low efficiency and the like exist in the combustion of the straw biomass granular fuel in the existing combustion furnace.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fire furnace of burning furnace to solve the burning that living beings pellet fuel exists in current burning furnace and be unstable, the burning is not abundant, phenomenon such as inefficiency.
In order to achieve the above object, the utility model provides a following technical scheme: a hearth of a combustion furnace comprises a combustion cylinder, an air outlet, a feeding mechanism and an air supply assembly, wherein a discharge port of the feeding mechanism is communicated with the combustion cylinder, the combustion cylinder is integrally connected and communicated with the air outlet, a combustion chamber is arranged in the combustion cylinder, the combustion chamber is in an inverted frustum shape, an inverted frustum-shaped air inlet partition plate is arranged on the periphery of the lower portion of the combustion chamber, a combustion partition plate is arranged at the bottom of the combustion chamber, the combustion partition plate, the air inlet partition plate and the inner wall of the combustion cylinder form an air storage space, a plurality of air inlet pipes are uniformly arranged on the air inlet partition plate, an air inlet is formed in the side wall of the combustion cylinder, the air inlet is communicated with the air storage space, and.
Preferably, the combustion cylinder comprises a square and ground round connecting piece, a combustion cylinder wall and a hearth bottom plate, one end of the square and ground round connecting piece is welded with the air outlet, the other end of the square and ground round connecting piece is connected with one end of the combustion cylinder wall, the other end of the combustion cylinder wall is connected with the hearth bottom plate, and the combustion chamber is located in the combustion cylinder wall.
Preferably, the combustion can is made of heat resistant steel.
Preferably, the combustion chamber is made of refractory mortar and refractory bricks.
Preferably, an ash cleaning chamber is arranged between the combustion partition plate and the hearth bottom plate, an ash cleaning opening is formed in the combustion cylinder, and the ash cleaning opening is communicated with the ash cleaning chamber.
Preferably, the air supply assembly comprises an air inlet fan and an air transmission pipeline, one end of the air transmission pipeline is communicated with the air inlet, the other end of the air transmission pipeline is communicated with the air inlet fan, and the air transmission pipeline is provided with an air volume adjusting valve.
Preferably, a feed inlet is formed in the middle of the combustion cylinder and communicated with the feeding mechanism.
Preferably, the combustion cylinder is provided with an observation port, and the horizontal position of the observation port is lower than that of the feed port.
Preferably, a fire grate is arranged on the combustion partition plate.
Preferably, the outer wall of the combustion cylinder is provided with a radiating fin.
Preferably, the three ring surfaces of the air outlet are provided with radiating fins.
Compared with the prior art, the beneficial effects of the utility model are that: the hearth provided by the application can experience tertiary air distribution during combustion, namely natural air from an ash cleaning port, surrounding air formed by air input by an air supply assembly entering an air storage space and natural air provided by a feeding air blower are combusted more fully, the heat efficiency is as high as 80%, the easy slagging rate of domestic biomass granular fuel combustion is reduced, and the problem of high inferiority of biomass granular ash is solved; the combustion chamber built by the refractory mortar and the refractory bricks can effectively avoid the phenomenon of local high temperature at the bottom of the combustion cylinder, and prolong the service life of the hearth; the air quantity regulating valve is arranged to regulate the air supply quantity.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a combustion can of the present invention;
FIG. 3 is a schematic view of the internal structure of the combustion cylinder of the present invention;
fig. 4 is a schematic structural view of the combustion chamber of the present invention.
In the figure: 1 combustion cylinder, 11 combustion cylinder wall, 111 air inlet partition board, 112 air inlet pipe, 113 combustion partition board, 114 combustion chamber, 12 heaven and earth round connecting piece, 13 hearth bottom board, 14 observation port, 15 ash cleaning port, 16 feed inlet, 17 air inlet, 18 fire grate, 2 feeding mechanism, 3 air supply component, 31 air volume regulating valve, 4 air outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a hearth of a combustion furnace comprises a combustion cylinder 1, an air outlet 4, a feeding mechanism 2 and an air supply assembly 3, a discharge port of the feeding mechanism 2 is communicated with the combustion cylinder 1, the combustion cylinder 1 is integrally connected and communicated with the air outlet 4, a combustion chamber 114 (a position shown by chain lines in fig. 3 and 4) is arranged in the combustion cylinder 1, the combustion chamber 114 is in an inverted frustum shape, an inverted frustum-shaped air inlet partition plate 111 is arranged on the periphery of the lower portion of the combustion chamber 114, a combustion partition plate 113 is arranged at the bottom of the combustion chamber 114, the combustion partition plate 113, the air inlet partition plate 111 and the inner wall of the combustion cylinder 1 form an air storage space, a plurality of air inlet pipes 112 are uniformly arranged on the air inlet partition plate 111, the air inlet pipes 112 are communicated with the air storage space, an air inlet 17 is formed in the side. Specifically, the combustion chamber 114 experiences tertiary air distribution in the whole combustion process, primary air distribution is natural air such as the observation port 14 and the ash removal port 15 on the combustion cylinder 1, tertiary air distribution is provided for the air blower in the feeding mechanism 2, in the embodiment, an air storage space with four air inlet pipes 112 is arranged outside the combustion chamber 114, multiple primary air distribution can be provided for the combustion process of the combustion chamber 114, secondary air distribution is performed in the whole combustion process, air provided by the air supply assembly 3 enters the combustion chamber 114 through the air inlet pipes 112, oxygen is uniformly supplied to fuel, the combustion of the fuel is more sufficient, meanwhile, the air enters the combustion chamber 114 to disturb a fuel layer, coking is avoided, and ash content is convenient to fall into the ash removal chamber. When the biomass particles adopt the hearth combustion provided by the application, tertiary air distribution can be experienced, the combustion is more sufficient under the action of the tertiary air distribution, the heat efficiency is up to 80 percent, the easy slagging rate of the combustion of the domestic biomass particle fuel is reduced, and the problem of high ash content of the biomass particles is solved.
Specifically, the combustion cylinder 1 comprises a top and bottom circular connecting piece 12, a combustion cylinder wall 11 and a hearth bottom plate 13, one end of the top and bottom circular connecting piece 12 is welded with the air outlet 4, the other end of the top and bottom circular connecting piece 12 is connected with one end of the combustion cylinder wall 11, the other end of the combustion cylinder wall 11 is connected with the hearth bottom plate 13, and the combustion chamber 114 is located in the combustion cylinder wall 11. An ash cleaning chamber is arranged between the combustion partition plate 113 and the hearth bottom plate 13, an ash cleaning opening 15 is formed in the side wall of the combustion cylinder 1, and the ash cleaning opening 15 is communicated with the ash cleaning chamber. A feed inlet 16 is formed in the middle of the combustion barrel 1, an air inlet 17 is formed below the feed inlet 16, and the feed inlet 16 is communicated with the feeding mechanism 2. The combustion barrel 1 is provided with an observation port 14, and the horizontal position of the observation port 14 is lower than that of the feed port 16.
Further, feed mechanism 2 carries furnace feed inlet 16 with living beings pellet fuel, and the device that is used for the feeding of burning furnace among the prior art can directly apply to this application, so about feed mechanism 2's structure, no longer describe in this application, and living beings pellet can fall into on grate 18 under the effect of dead weight, forms the fuel layer of certain thickness, and feed inlet 16 in this application is in the middle part position of a combustion section of thick bamboo 1 to dead weight form blanking, and is undulant little to the interference of burning flame.
Preferably, the combustion chamber 114 is made of refractory mortar and refractory bricks, so that the local high temperature phenomenon at the bottom of the combustion cylinder wall 11 can be effectively avoided, and the service life of the combustion furnace hearth can be prolonged.
Preferably, the combustion cylinder 1 is made of heat-resistant steel, the combustion cylinder is high-temperature resistant and not easy to deform, and meanwhile, heat dissipation fins are arranged on the outer wall of the combustion cylinder, cold air acts on the outer side (not shown) of the combustion cylinder 1, and the heat dissipation fins can increase the heating area of the cold air.
Preferably, air supply subassembly 3 includes air intake fan and gas transmission pipeline, and gas transmission pipeline's one end and air inlet 17 intercommunication, gas transmission pipeline's the other end and air intake fan intercommunication are equipped with air regulation valve 31 on the gas transmission pipeline, and when air supply subassembly 3 was the combustion chamber 114 air feed, not only can the oxygen suppliment help the burning abundant, can also disturb the fuel bed, was favorable to the ash content to fall into the deashing room.
Preferably, three anchor faces at air outlet 4 are provided with radiating fin, because the outer wall from the bottom up temperature of combustion section of thick bamboo 1 is higher and higher, radiating fin's setting can increase the cold air heated area.
Preferably, the combustion partition 113 is provided with a grate 18, and the grate 18 can be replaced when burned out.
The combustion principle is as follows: the biomass particles are tiled and stacked on the grate 18 to form a fuel layer with a certain thickness for combustion, and the combustion process is as follows: drying and dewatering, volatile analysis, volatile combustion, coke combustion and burn-out 5 processes. Wherein, the drying dehydration, the volatile analysis, the coke burning and the burnout are all carried out in the grate 18 and the combustion chamber 114, and the volatile burning is carried out at the middle part of the combustion barrel 1 close to the feed inlet 16. The key point of the complete combustion lies in oxygen supply, the theoretical air quantity on the theoretical level is just complete combustion, and the excess air is supplied in the actual combustion process so as to ensure that the biological particles have complete oxygen combustion in the whole combustion process. The air inlet 17 is connected to an air inlet fan, and air is supplied into the air storage space and then supplied with oxygen through the uniformly arranged air inlet pipes 112.
Feeding: the feeding mechanism 2 sends biomass particles to the feeding hole 16, and the biomass particles fall onto the fire grate 18 of the combustion cylinder 1 under the action of self weight to form a fuel layer with a certain thickness. The feeding position of the combustion cylinder 1 is arranged in the middle of the combustion cylinder 1, and the feeding device discharges materials in a self-weight mode, so that the interference fluctuation of the flame in combustion is small.
Air supply: the combustion conditions of the biomass granular fuel are as follows: firstly, a certain temperature is reached; proper air is mixed with fuel; (iii) sufficient reaction time. According to the combustion condition of the biomass particle fuel, the hearth of the combustion furnace provided by the application uses the simplest and most effective manual combustion-supporting ignition mode, the air required for ignition is natural air from the observation port 14 and the ash removal port 15 of the combustion cylinder 1, which is also called bottom air or primary air distribution, the air from the ash removal port 15 is fully mixed with the biomass particles below the fire grate 18, the air from the observation port 14 is fully mixed with the biomass particles above the fire grate 18, the ignited biomass particle fuel ignites other non-ignited particle fuel, and the air input by the air inlet fan enters the air storage space to form surrounding air and is uniformly supplied with air through the air inlet pipes 112 in the form of positive air pressure. With a sufficient amount of air, the unburned particles will be ignited, in which 4 processes of drying and dehydration, volatile analysis, coke burning, and burnout will take place. The air inlet fan supplies air during the combustion process, and when the heat generated by the combustion cylinder 1 is excessive, the air inlet quantity can be controlled by the air quantity regulating valve 31 on the gas transmission pipeline. Meanwhile, the air inlet pipe 112 is arranged above the fire grate 18, the entering air disturbs the fuel layer of mixed combustion, which is beneficial to full combustion and coking prevention, and the particles and ash on the fire grate 18 can be separated and fall into the ash removal box of the combustion cylinder 1, and the air supplied in the process is called secondary air distribution. The volatile components are a small amount of CO and NO, air is provided by a feeding air blower in the middle of the combustion cylinder 1, the volatile components are continuously combusted under the action of high temperature to generate carbon dioxide and nitrogen dioxide, the carbon dioxide and the nitrogen dioxide are discharged from the air outlet 4 along with flue gas, and the air supplied in the process is called tertiary air distribution. The application provides a furnace of burning furnace can make the fuel burning more abundant under the effect of cubic air distribution, and the thermal efficiency is up to 80%, has reduced the easy slagging rate of domestic living beings pellet fuel burning, has solved the inferiority that living beings pellet ash is high.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a furnace of combustion furnace, includes a combustion cylinder (1), air outlet (4), feed mechanism (2) and air supply subassembly (3), the discharge gate and the combustion cylinder (1) intercommunication of feed mechanism (2), its characterized in that: the utility model discloses a combustor, including a combustor, air outlet (4), combustion chamber (114), baffle (111) that admits air, combustion chamber (114) lower part periphery is equipped with the baffle (111) that admits air of a round platform form, combustion chamber (114) bottom is equipped with combustion baffle (113), combustion baffle (113) and baffle (111) and combustion chamber (1) inner wall formation gas storage space admits air, evenly be provided with a plurality of intake pipes (112) on baffle (111) admits air, air inlet (17) have been seted up on combustion chamber (1) lateral wall, air inlet (17) and gas storage space intercommunication, air inlet (17) and air supply subassembly (3) intercommunication.
2. A furnace for a furnace as set forth in claim 1 wherein: the combustion cylinder (1) comprises a top and bottom round connecting piece (12), a combustion cylinder wall (11) and a hearth bottom plate (13), one end of the top and bottom round connecting piece (12) is welded with the air outlet (4), the other end of the top and bottom round connecting piece (12) is connected with one end of the combustion cylinder wall (11), the other end of the combustion cylinder wall (11) is connected with the hearth bottom plate (13), and the combustion chamber (114) is located in the combustion cylinder wall (11).
3. A furnace for a furnace as claimed in claim 2 wherein: the combustion chamber (114) is formed by building refractory mortar and refractory bricks.
4. A furnace for a furnace as claimed in claim 2 wherein: an ash cleaning chamber is arranged between the combustion partition plate (113) and the hearth bottom plate (13), an ash cleaning opening (15) is formed in the combustion cylinder (1), and the ash cleaning opening (15) is communicated with the ash cleaning chamber.
5. A furnace for a furnace as set forth in claim 1 wherein: the air supply assembly (3) comprises an air inlet fan and a gas transmission pipeline, one end of the gas transmission pipeline is communicated with the air inlet (17), the other end of the gas transmission pipeline is communicated with the air inlet fan, and an air volume adjusting valve (31) is arranged on the gas transmission pipeline.
6. A furnace for a furnace as set forth in claim 1 wherein: a feed inlet (16) is formed in the middle of the combustion barrel (1), and the feed inlet (16) is communicated with the feed mechanism (2).
7. A furnace for a furnace as claimed in claim 6 wherein: an observation port (14) is formed in the combustion cylinder (1), and the horizontal position of the observation port (14) is lower than that of the feed port (16).
8. A furnace for a furnace as set forth in claim 1 wherein: and the outer wall of the combustion cylinder (1) is provided with radiating fins.
9. A furnace for a furnace as set forth in claim 1 wherein: and the three ring surfaces of the air outlet (4) are provided with radiating fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926969.2U CN212299054U (en) | 2020-05-27 | 2020-05-27 | Hearth of combustion furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926969.2U CN212299054U (en) | 2020-05-27 | 2020-05-27 | Hearth of combustion furnace |
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| CN212299054U true CN212299054U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594867A (en) * | 2020-05-27 | 2020-08-28 | 江苏沃得高新农业装备有限公司 | Hearth of combustion furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594867A (en) * | 2020-05-27 | 2020-08-28 | 江苏沃得高新农业装备有限公司 | Hearth of combustion furnace |
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