CN205979731U - Chain boiler's overgrate air device - Google Patents
Chain boiler's overgrate air device Download PDFInfo
- Publication number
- CN205979731U CN205979731U CN201620991851.1U CN201620991851U CN205979731U CN 205979731 U CN205979731 U CN 205979731U CN 201620991851 U CN201620991851 U CN 201620991851U CN 205979731 U CN205979731 U CN 205979731U
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- air
- boiler
- burner hearth
- chain
- furnace
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Abstract
The utility model provides a chain boiler's overgrate air device, the traveling grate stoker who includes face arch, back hunch and the furnace lower extreme of furnace, furnace lower part, furnace's outside is provided with the overgrate air bellows, and the overgrate air bellows pass through wind channel and air -blower intercommunication, be provided with on the overgrate air bellows two air intakes with furnace communicates with each other, and the air intake sets up the upper portion and the lower part of encircleing in the back respectively. This chain boiler's overgrate air device has improved the combustion efficiency of boiler for the coal seam on the traveling grate stoker has obtained further abundant burning, has prevented the phenomenon of local slagging scorification in the stove moreover.
Description
Technical field
This utility model is related to a kind of boiler, more particularly to a kind of overfire air device of chain-grate boiler.
Background technology
The promotion in country is greatly developed, energy-saving and emission-reduction, and the protection energy, raising environment for human survival quality are all played actively
Effect.Improve boiler thermal output, prevent ash erosion, reduce the content of boiler exhaust gas dirt, be the exploration project of an emphasis.
There is many deficiencies in existing chain-grate boiler at present during making use：In stove, the effect of smoke abatement and dust control is poor, in boiler
Coal-fired burning in burner hearth is insufficient, and some tiny micro- carbon granules are not also fully burned and are just discharged in air,
Severe contamination environment；Because coal cannot sufficiently burn, the waste of resource can be caused again, also can cause fire coal simultaneously
Slagging scorification, and these are all because the efficiency of combustion of boiler is low.
Content of the invention
In order to solve the above-mentioned problems in the prior art, this utility model provides a kind of secondary wind of chain-grate boiler
Device.
This utility model is achieved through the following technical solutions：A kind of overfire air device of chain-grate boiler, including burner hearth,
The traveling-grate stoker of the face arch of lower furnace portion, rear arch and burner hearth lower end, the outside of described burner hearth is provided with secondary air bellow, secondary
Wind bellows are connected with aerator by air channel, secondary air bellow is provided with two air inlets and communicates with described burner hearth.
In such scheme, two air inlets on described secondary air bellow are divided into enterprising air port and lower air inlet, described on
Air inlet is arranged on the top of rear arch just to burner hearth, and lower air inlet is arranged on the bottom of rear arch just to traveling-grate stoker.
A kind of overfire air device of chain-grate boiler of this utility model compared with prior art, has the advantages that：
The 1st, overfire air device is set outside the rear arch of burner hearth, and secondary wind is to be medium with air, can be required as burning
Portion of air be used for fuel burning, make fuel have enough air by fuel after-flame, and make incomplete combustion loss drop
To minimum, boiler efficiency raising；
2nd, increasing overfire air device can make excess oxygen in stove and fuel gas be sufficiently mixed, and make chemically incomplete combustion
In loss and stove, excess air reduces, and boiler efficiency improves；
3rd, increase secondary wind and not only can extend flue gas distance, prevent backlayering and short circuit, can also improve empty in stove
The full level of gas, controls combustion centre position, prevents local slagging scorification etc. in stove.
Brief description
Accompanying drawing is the structural representation of the overfire air device of this utility model chain-grate boiler.
In figure：1. traveling-grate stoker, 2. coal bunker, 3. face arch, 4. burner hearth, 5. upper drum, 6. rear arch, 7. enterprising air port, 8. two
Secondary wind bellows, 9. lower drum, 10. convection heating surface, 11. times air inlets, 12. ash dropped units, 13. First air entrances, 14. coals
Layer, 15. aerators.
Specific embodiment
With specific embodiment, the overfire air device of this utility model chain-grate boiler is further retouched below in conjunction with the accompanying drawings
State：
Accompanying drawing is the structural representation of the overfire air device of this utility model chain-grate boiler.In figure, this chain-grate boiler
Overfire air device, including the traveling-grate stoker 1 of burner hearth 4, the face arch 3, rear arch 6 and burner hearth lower end of lower furnace portion, outer in burner hearth 4
The side of portion's rear arch 6 is provided with secondary air bellow 8, and secondary air bellow 8 is connected with aerator 15 by air channel, secondary air bellow 8
On be provided with two air inlets, enterprising air port 7 is arranged on the top of rear arch 6 just to burner hearth 4, and lower air inlet 11 is arranged on rear arch 6
Bottom just to traveling-grate stoker 1.
Bunker coal enters traveling-grate stoker 1 from coal bunker 2 and burns, and chimney arch 3 and chimney arch 6 compacting flame forward, heat coal seam of igniting,
Burn in burner hearth 4 in coal seam 14, enterprising air port 7 and lower air inlet 11 enter burner hearth from rear arch 6, provide oxygen to supply coal combustion,
Lower air inlet 11 air intake, the burning for coal seam provides more sufficient combustion air, so that coal seam is thoroughly burnt, prevents in stove
Coal-fired slagging scorification, enterprising air port 7 air intake, continuing fully burning for the micro- carbon granule in flame provides oxygen.The cigarette that burning produces
Dirt is drained after ash dropped unit 12 falls into traveling-grate stoker 1, secondary air bellow 8 provide the enterprising air port of secondary air separating dispensing 7 and under enter
Air port 11, First air enters traveling-grate stoker 1 from First air entrance 13, and the distribution from traveling-grate stoker 1 bottom flow to stoker surface, carries
Oxygen, burns for coal seam 14；Upper drum 5, lower drum 9 and convection heating surface 10 absorb burning liberated heat, form steam
Or hot water, for industrial application.
The overfire air device of this chain-grate boiler is that the coal seam on traveling-grate stoker has obtained sufficiently burning further, improves
The efficiency of combustion of boiler, and prevent the phenomenon of local slagging scorification in stove.
The above, be only preferred embodiment of the present utility model, not this utility model is made any formal
Restriction although this utility model is disclosed above with preferred embodiment, but be not limited to this utility model, any ripe
Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when available the disclosure above method and
Technology contents make a little change or the Equivalent embodiments being modified to equivalent variations, as long as being without departing from this utility model technology
The content of scheme, any simple modification above example made according to technical spirit of the present utility model, equivalent variations with
Modify, still fall within the range of technical solutions of the utility model.
Claims (2)
1. a kind of overfire air device of chain-grate boiler, including the chain of burner hearth, the face arch of lower furnace portion, rear arch and burner hearth lower end
Fire grate it is characterised in that：The outside of described burner hearth is provided with secondary air bellow, and secondary air bellow passes through air channel with aerator even
Logical, secondary air bellow is provided with two air inlets and communicates with described burner hearth.
2. a kind of chain-grate boiler according to claim 1 overfire air device it is characterised in that：On described secondary air bellow
Two air inlets be divided into enterprising air port and lower air inlet, described enterprising air port is arranged on the top of rear arch just to burner hearth, under enter
Air port is arranged on the bottom of rear arch just to traveling-grate stoker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620991851.1U CN205979731U (en) | 2016-08-19 | 2016-08-19 | Chain boiler's overgrate air device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620991851.1U CN205979731U (en) | 2016-08-19 | 2016-08-19 | Chain boiler's overgrate air device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205979731U true CN205979731U (en) | 2017-02-22 |
Family
ID=58041402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620991851.1U Active CN205979731U (en) | 2016-08-19 | 2016-08-19 | Chain boiler's overgrate air device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205979731U (en) |
-
2016
- 2016-08-19 CN CN201620991851.1U patent/CN205979731U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 714000 middle section of houhuai Road, Weinan economic and Technological Development Zone, Shaanxi Province Patentee after: Shaanxi zizhao Equipment Co.,Ltd. Address before: 714000 middle section of houhuai Road, Weinan economic and Technological Development Zone, Shaanxi Province Patentee before: SHAANXI ZIZHAO EQUIPMENT MANUFACTURING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |