CN87212630U

CN87212630U - Coal storage type hot water heating boiler burning smoke which is returned from below

Info

Publication number: CN87212630U
Application number: CN 87212630
Authority: CN
Inventors: 肖志兰; 陈星照; 裴德山
Original assignee: CHINA BUILDING STANDARD DESIGN
Current assignee: CHINA BUILDING STANDARD DESIGN
Priority date: 1987-12-18
Filing date: 1987-12-18
Publication date: 1988-08-03

Abstract

The utility model relates to a miniature coal burning hot water heating boiler adopting the coal storage type returned from below mode, which is used new structures of an infundibular coal storage bin, a circular arch-shaped grate, a secondary air inlet pipe, a dust baffling plate, etc. The heat efficiency is increased and the dust content of the flue gas is decreased. The dust content is lower than the flue gas emission standard prescribed by the nation. The utility model has the advantages of high thermal efficiency, small size and convenient operation, does not need an induced draft fan and a blower and essentially does not have the noise. The utility model can continuously burn a plurality of hours which is charged with the coal once and does not need to in particular call on a fireman personnel. The coal storage type hot water heating boiler burning smoke which is returned from below can be suitable to the miniature heating system of the single dwelling in the city or in the county.

Description

Coal storage type hot water heating boiler burning smoke which is returned from below

The utility model relates to a kind of novel small-sized hot-water heating boiler.

The at present domestic coal burning water heating heating boiler that does not also have small-sized (50,000 kilocalories/hour below), mostly the small-sized hot-water heating boiler of producing and using is by hand coal, burns in the mode of grate firing, this class boiler is except hanging down the utilization rate of fuel thermal energy, dustiness is big in exhaust gas discharged, environmental pollution is serious, does not reach the standard limit of smog release of national regulation.In order to reduce dustiness, at exhaust opening deduster is installed usually, but has been increased flowing resistance, must mix air inducing and air blast, this can make boiler produce very big noise again.(as the U.S., Japan, Hungary etc.) abroad, the existing at present heating boiler that returns cigarette under the coal formula of storing, its structure is to establish coal bin in the centre of boiler, and the thermal treatment zone is established in the both sides, and combustion gas is returned cigarette to both sides; Adopt plank frame in the thermal treatment zone, bearing capacity is lower more.

The purpose of this utility model is for the small-sized heating system of independent dwelling house in city or small towns provides a kind of simple in structure, thermal efficiency height, and flue dust is few, and noise is low, the easy to operate novel heating boiler that does not need ad hoc stoker personnel.

Below in conjunction with accompanying drawing structure of the present utility model is described.

Fig. 1 is principal section figure of the present utility model;

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

The utility model adopts the structure of coal storage type burning smoke which is returned from below. The previous section of stove is coal bunker 2, and aft section is the thermal treatment zone, and the centre is separated with heat-resisting dividing plate, and burner hearth is below coal bunker, and coal adds coal bunker from firing door 1, and behind hearth combustion, the thermal treatment zone into the back is returned in combustion gas, and from the chimney combustion gas at its top. For coal can be fallen in burning naturally, coal bin has certain gradient, is funneling; Fire grate 4 is circular arch shape, at its rotating shaft first line of a couplet one rocking handle 17, can shake rocking handle outside stove, makes coal ash enter ashcan 18 from hole 27 declines of opening on fire grate; In front, left and right three walls of coal bin, between cast iron inwall 10 and furnace insulation

outer wall

12,13, be provided with air layer 11, air layer is interlinked to the outside through passage 21 and stove, have passage 5 at the cast iron inwall, like this, coal in coal bin can obtain preheating before entering burner hearth, improve combustion efficiency, and has increased the boiler air inflow; Also be provided with presbyopia air inlet pipe 6 at the furnace outlet place, feeding secondary air makes from the fuel gas of the burner hearth input thermal treatment zone to be fully burned; The heating surface of boiler is by

header

9,26 and four groups of

combs

22,23,24,25 that connect upper lower box form up and down, and be provided with two dust boards 7 with heat-resisting dividing plate, it can stop that dust directly leads to chimney 14 on the one hand, can increase on the other hand the combustion of coming out from burner hearth Gas is utilized heat energy at the revolution route (shown in the curve arrow among Fig. 1) of the thermal treatment zone more fully; Have two corresponding ash removing openings 19,20 in the body of heater side, can regularly remove the dust that amasss on dust board by these two holes; In chimney 14, be provided with a rotating smoke shelf 8, when it is in vertical angle, do not affect the ventilation of boiler, and when forwarding horizontal level to, chimney is sealed fully; Delivery port 16 at boiler is provided with smoke shelf controller 15, and it can control automatically according to leaving water temperature the angle of smoke shelf, thereby has controlled the burning of boiler.

Have the hole 27 of strip at fire grate, in order to air inlet and ash discharge; Two dust boards in the above-mentioned thermal treatment zone all become 20 ° of-30 ° of angles with horizontal plane. In addition, the furnace insulation outer wall is made up of heat resistance concrete layer 12 and rock wool layer 13. 3 are igniting and observation door among Fig. 1 and Fig. 2, and 28 are the blowdown drain valve.

The utility model is provided with flared coal bin, adopt the comb heating and be provided with air layer and secondary wind inleting tube, improved the burning of coal effect, saved the energy, and to make dustiness in the exhaust gas discharged greatly be to reduce, and is lower than the standard limit of smog release of national regulation; Because do not need with air inducing and air blast, so there is not noise substantially, adding a dant can burn tens hours continuously, did not need ad hoc stoker personnel, was a kind of thermal efficiency height, the low coal consumption, volume is little, easy to operate novel heating boiler.

Embodiment:

Quantity of heat production be 40,000 kilocalories/hour small-sized coal burning water heating heating boiler, body of heater is of a size of length * wide * height=1100 * 950 * 1700(millimeter), the coal bunker coal storage is 125 kilograms, Coal-fired capacity is 9 kilograms/hour, but coal continuous burning 12 hours, after tested, the thermal efficiency is 69%, and smoke content is that every mark rice is below 200 milligrams.Can be for the residential area heating about 400 square meters.

Claims

1, a kind of small-sized coal burning water heating heating boiler has firing door 1, coal bin 2, igniting and observes door 3, fire grate 4, and chimneys 14 etc. is characterized in that coal bin has certain gradient, is funneling; Fire grate is dome-shaped and is associated with rocking handle 17 in rotating shaft; In preceding, the left and right wall of coal bin, between cast iron inwall 10 and furnace insulation outer wall 12,13, be provided with air layer 11, air layer is interlinked to the outside through passage 21 and stove, has ventilation empty 5 on the cast iron inwall; Be provided with presbyopia air inlet pipe 6 at the furnace outlet place; There are four groups of combs 22,23,24,25 to connect between the last lower collecting box 9,26 of the thermal treatment zone, and with heat-resisting dividing plate 7, two dust boards 7 of two dust boards are set and all become 20 ° of-30 ° of angles with horizontal plane; Have two corresponding ash removing openings 19,20 in the body of heater side; In chimney 14, be provided with rotating cigarette shelves 8, and be connected with the cigarette shelves controller 15 that is located at delivery port 16; On fire grate, have strip hole 27; The furnace insulation outer wall is made up of heat resistance concrete layer 12 and rock wool layer 13.