CN2333956Y - Vertical smoke-eliminating and dust-removing atmospheric boiler - Google Patents

Abstract

The utility model relates to an improved vertical smoke-eliminating and dust-removing atmospheric boiler. The utility model is composed of a boiler body, an inner container, etc. The interior of the inner container is provided with a movable fire grate, a water cooling fire grate and a boiler hearth arch, and a then upper combustion chamber and a lower combustion chamber are formed. The boiler hearth arch and a lower smoke box which is arranged on the boiler hearth arch are respectively provided with an upper stroke screw thread smoke pipe and a lower stroke screw thread smoke pipe which are respectively communicated with a closed-top oil box and the lower smoke box. The exit part of the smoke passage of the smoke box is provided with a tangential dust remover. The utility model has the advantages of small volume, high heat efficiency, good smoke-eliminating and dust-removing effects, convenient installation and maintenance and construction investment saving.

Description

Vertical smoke abatement and dust control normal-pressure boiler

The utility model is a kind of vertical smoke abatement and dust control normal-pressure boiler, is the improvement to existing horizontal positive and negative bilateral-firing normal-pressure hot-water boiler.

Existing double-grate boiler can satisfy country basically to environmental protection requirement, but because coal is dropped on the grate of upper strata water-cooled grate, air then passes through the coal seam from top to down, flare is burnt downwards, and forbidden to add new coal on the fixed grate of bottom, its fuel is mainly derived from the coal of being disclosed on the water-cooled grate of upper strata, these coals burn away on fixed grate until after-flame, because the water-cooled grate fractional cold is big, therefore the burning of coal condition is bad, can only burned coal, lump coal, as the user on the water-cooled grate when colm is missing of ignition, just coal is thrown on the following fixed grate, thereby Zhu has gone the meaning of double-layer grate.For overcoming above-mentioned deficiency, Chinese patent CN96225589.0 disclosed " positive and negative bilateral-firing normal-pressure hot-water boiler " has added mid-board one on the left side of double-layer grate, the left lower side of mid-board has been set up one deck cast iron and has just been burnt fire grate, so just whole combustion chamber left and right sides two parts have been divided into, during normal combustion, fuel is together to throwing on just contrary two fire grates, just burning on the fire grate high-temperature flue gas after the burning crosses partition wall and rushes at reverse burning fire bed, make flue gas obtain filtering and abundant after-flame, solved above-mentioned deficiency substantially.But this structure only is fit to the bigger boiler of Capacity Ratio, and the boiler grate area itself that capacity is little is just little, if be divided into left and right sides two parts again, then the ignition condition of coal is bad; Simultaneously, existing boiler all adopts fixed grate, during the dust stratification of fireman on removing fixed grate, open the following ash door that disappears, and with stove hook fire bars hook ash one by one, both unhygienic, labour intensity is big again; And existing water-cooled grate all is one deck structure, and the burning of coal effect is bad, and grate temperature and burning velocity are lower.

The purpose of this utility model is to provide a kind of energy-conservation thermal efficiency height, and combustion efficiency is good, and deashing is convenient, and various excellent, the smuts that can fully burn can be made into vertical smoke abatement and dust control normal-pressure boiler big low capacity, that can reduce labour intensity again.

Technical solution of the present utility model is: comprise body of heater 2, in courage 3 and be located at the ash-falling chamber 21 of body of heater 2 bottoms, ash-falling chamber's shoot door 19 constitutes vertical smoke abatement and dust control normal-pressure boiler, it is characterized in that being respectively equipped with moving grate 1 and burner hearth crown 14 at the bottom and the middle part of lining courage 3, be provided with water-cooled grate 4 between moving grate 1 and the burner hearth crown 14, water-cooled grate 4 and burner hearth crown 14, form upper combustion chamber 16 and lower combustion chamber 18 between the moving grate 1 respectively, on, lower combustion chamber 16 and 18 is respectively equipped with upper coal feeding door 15 and following firing door 17, burner hearth crown 14 tops are provided with lower smoke box 13 and lower smoke box flue outlet 6, erect on burner hearth crown 14 outer circumference be provided with up stroke threaded flue 8 and be located in the smoke box 11 that binds at courage 3 tops is communicated with, setting is provided with down stroke threaded flue 9 and is communicated with lower smoke box 13 on lower smoke box 13 top circumference.

In technique scheme, 6 places are provided with tangential deduster 5 at the lower smoke box flue outlet.

In technique scheme, water-cooled grate 4 is by two layers or three layers of parallel fire grate are staggered up and down constitutes.

Advantage of the present utility model is to make fixed grate into moving grate, is easy to deashing, has reduced fireman's labour intensity; Make reverse burning water-cooled grate into movable parallel two layers or parallel three layers of staggered up and down forwards combustion to water-cooled grate, both reduced floor space, burning inferior coal and fat coal on moving grate and water-cooled grate respectively again, the high-temperature flue gas of the moving grate of bottom is upwards by two layers or three layers of staggered burning once more of being heated of parallel water-cooled grate, not only eliminate black smoke but also improved the grate temperature of water-cooled grate, increased burning velocity; Owing to adopted vertical upper and lower stroke threaded flue, make wing flue of single drum longitudinal and threaded flue into two-pass pent-roof threaded flue, so dwindled the height of body of heater, improved heat transfer and efficiency of combustion, reduced exhaust gas temperature; Simultaneously in the utility model, newly be provided with the tangential deduster, thereby make the boiler soot emission amount reach the requirement of country environment protection treating.In a word, the utility model volume is little, compact conformation, and thermal efficiency height, obvious energy conservation, but burning inferior coal, smoke abatement and dust control and combustion efficiency are good, reduce labor intensity, and installation and maintenance are convenient, save capital expenditure.

Following accompanying drawing has been described embodiment of the present utility model.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A profile of Fig. 1;

Fig. 3 is the B-B profile of Fig. 1;

Fig. 4 is the C-C profile of Fig. 2.

Below in conjunction with accompanying drawing the utility model is described in detail.As shown in the figure, the utility model is to be made of body of heater 2, lining courage 3 and the parts such as ash-falling chamber 21, ash-falling chamber's shoot door 19 that are located at body of heater 2 bottoms, in the bottom of courage 3 be provided with moving grate 1, moving grate 1 is provided with pendulum wall 34, remove 31 by pull bar 32 with put wall 34 and be connected, remove 31 bottom with remove a support 33 and be connected and be welded on the bottom of body of heater (2).During deashing, ash-falling chamber's shoot door 19 is shut, moved removing above the moving grate 1 back and forth with hand and the dust stratification on the fire grate can be disposed 31.In the middle part of courage 3 be provided with the burner hearth crown 14 that forms with the refractory material casting, be provided with water-cooled grate 4 between moving grate 1 and the burner hearth crown 14, water-cooled grate 4 can be made of one deck fire grate, also can be handed over up and down to arrange by parallel two layers or three layers of parallel fire grate to constitute, water-cooled grate 4 constitutes by three layers of parallel fire grate are staggered up and down in this programme, is staggered like this, can be heated better and burning once more, simultaneously can eliminate black smoke, improve the grate temperature of water-cooled grate, increase burning velocity.In order to make moving grate 1 energy burning inferior coal, be provided with wind fresh air inlet 20 one time on the right side of following ash-falling chamber 21, itself and air blast join, and guarantee a wind supply, are provided with secondary wind fresh air inlet 22 on the right side on moving grate 1 top, guarantee the supply of secondary wind.Form upper combustion chamber 16 between water-cooled grate 4 and the burner hearth crown 14, upper combustion chamber is provided with upper coal feeding door 16, forms lower combustion chamber 18 between moving grate 1 and the water-cooled grate 4, and lower combustion chamber is provided with down firing door 17.14 ones of burner hearth crowns are provided with lower smoke box 13, lower smoke box flue outlet 6 and lower smoke box shoot door 12.For dwindling the boiler furnace height, improve and conduct heat and efficiency of combustion, reduce exhaust gas temperature, make the wing flue of single drum longitudinal and threaded flue into the two-pass threaded flue that binds, concrete structure is to erect up stroke threaded flue 8 is set on burner hearth crown 14 outer circumference, its be located in the smoke box 11 that binds at courage 3 tops be communicated with, setting is provided with down stroke threaded flue 9 on lower smoke box 13 top circumference, it is communicated with lower smoke box 13, and the smoke box 11 that binds each side is provided with a shoot door 10 and 10 ＇.In order to make the boiler soot emission amount reach the requirement of country to environment protection treating, export 6 places in the lower smoke box road and be provided with tangential deduster 5, the above and below of deduster 5 is respectively equipped with deduster outlet flue 7 and deduster shoot door 23, because of the boiler smoke flow path resistance is bigger, so connect air-introduced machine at deduster outlet flue 7 places.During normal combustion, following moving grate 1 burns bituminous coal, upper strata water-cooled grate 4 burns moulded coal and anthracite, fuel is thrown into up and down on two fire grates simultaneously, the high-temperature flue gas that following moving grate 1 is produced is under the effect of air blast and air-introduced machine, pass the coal seam of burning on upper strata water-cooled grate 4 and the water-cooled grate 4, make the most flue gas that do not burn obtain filtering and abundant after-flame, the secondary wind fresh air inlet 22 on lower combustion chamber 18 right sides has guaranteed to add new coal required oxygen in combustion process, and strengthened upper strata water-cooled grate burning of coal, thereby also reached the purpose of smoke abatement and dust control.

Claims (6)

1, a kind of vertical smoke abatement and dust control normal-pressure boiler, comprise body of heater (2), in courage (3) and be located at the ash-falling chamber (21) of body of heater (2) bottom, ash-falling chamber's shoot door (19), it is characterized in that being respectively equipped with moving grate (1) and burner hearth crown (14) at the bottom and the middle part of lining courage (3), be provided with water-cooled grate (4) between moving grate (1) and the burner hearth crown (14), water-cooled grate (4) and burner hearth crown (14), form upper combustion chamber (16) and lower combustion chamber (18) between the moving grate (1) respectively, on, lower combustion chamber (16) and (18) are respectively equipped with upper coal feeding door (15) and following firing door (17), burner hearth crown (14) top is provided with lower smoke box (13) and lower smoke box flue outlet (6), erect on burner hearth crown (14) outer circumference be provided with up stroke threaded flue (8) and be located in the smoke box that binds (11) at courage (3) top is communicated with, setting is provided with down stroke threaded flue (9) and is communicated with lower smoke box (13) on lower smoke box (13) top circumference.

2, vertical smoke abatement and dust control normal-pressure boiler according to claim 1, it is characterized in that described lower smoke box flue outlet (6) locates to be provided with tangential deduster (5), the above and below of deduster (5) is respectively equipped with deduster outlet flue (7) and deduster shoot door (23), and deduster outlet flue (7) is connected with air-introduced machine.

3, vertical smoke abatement and dust control normal-pressure boiler according to claim 1 and 2 is characterized in that the bottom of in the combustion chamber (18) and middle part are respectively equipped with a fresh air inlet (20) and secondary intake opening (22), and a fresh air inlet (20) is connected with air blast.

4, vertical smoke abatement and dust control normal-pressure boiler according to claim 1 and 2 is characterized in that described water-cooled grate (4) all becomes by three layers of parallel fire grate are staggered up and down.

5, vertical smoke abatement and dust control normal-pressure boiler according to claim 1 and 2, it is characterized in that described moving grate (1) is provided with pendulum wall (34), remove (31) are connected with pendulum wall (34) by pull bar (32), remove the handle bottom of (31) and remove a support (33) and be connected and be welded on the bottom of body of heater (2).

6, vertical smoke abatement and dust control normal-pressure boiler according to claim 1 and 2 is characterized in that being respectively equipped with the matching used with it smoke box shoot door (10) that binds, (10) and lower smoke box shoot door (12) on smoke box that binds (11) and lower smoke box (13).

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