CN2068663U - Vertical hand reciprocatable coal-feeding hot blast boiler - Google Patents

Abstract

The utility model relates to an apparatus providing clean hot air, which is a device for providing heat, baking and heating. A furnace chamber is provided with furnace arches (2), three two-time air providing pipes (25), (26), (28) and a moving grate (23), and a heat exchanger comprises an air cavity between an internal furnace wall and an external furnace wall and a plurality of air pipes installed on the internal furnace wall. The air cavity is provided with a separating plates (3), (6), (8), (11) which can cause air to repeatedly flow back and forth, and a plurality of groups of smoke guiding plates are arranged in the air pipes. For increasing the furnace life, the air pipes are pressed tightly and embeded in the internal furnace wall, and in the working process air is not mixed with flue gases, thus ensuring that hot air can be not polluted.

Description

Vertical hand reciprocatable coal-feeding hot blast boiler

The utility model belongs to thermo-mechanical machine--hot-blast stove.

In a lot of industries, all need to dry or heat with hot-air, as food processing industry, chemical industry, the grain industry all will use hot-air dry or heat with hot gas in the painting process of tobacco, medicinal material industry and mechanical industry.Because target and working quantity is different, requirement to hot-blast stove is also different, it is the cold air of stove combustion gas and introducing to be mixed make air reach uniform temperature to use that a kind of hot-blast stove is arranged, the major defect of this equipment is a sanitary condition of destroying original cold air, make working medium mix the combustion gas composition, in some cases owing to may can not use to the pollution of the object of being dried or heating; Another kind of hot-blast stove is that the high-temperature fuel gas that stove produces is arrived certain temperature to air heat in heat exchanger, and heated air uses as working medium, and this equipment does not have pollution problem, but the problem of usually bringing is a complex structure, and cost improves.The development speed of current China all trades and professions is very fast, needs various hot-blast stove to provide each enterprise to use.The utility model provides a kind of simple in structure for medium-sized and small enterprises, and cost is low, the not contaminated hot-blast stove of working medium.Overcome the shortcoming of small-sized handwarmer periodic duty technically, make it to carry out continuous burning, and the characteristics of structurally utilizing bogey are used the continuous coal supply technology of moving grate, have avoided the complex structure that various moving fire grates cause in the present used industrial furnace, the shortcoming that cost is high.Make full use of the secondary air feed of present Industrial Boiler and utilize the technology that reflects the new coal of chimney arch preheating at burner hearth.

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model structural representation side cutaway view.

Fig. 3 is the A-A profile of the utility model structural representation Fig. 1.

Fig. 4 is the automatic driving schematic diagram of the automatic coal pusher of the utility model.

Among the figure: (1) combustion chamber top board, (2) stove roof sheet, (3) dividing plate I, (4) furnace core wall, (6) dividing plate II, (7) air hose I, (8) dividing plate III, (9) thermal insulation layer, (10) air hose II, (11) dividing plate IV, (12) chimney arch, (13) coal feeding hole, (14) coal current plate, (15) connecting plate, (16) push rod, (17) handgrip, (18) drive link, (19) coal pusher seat, (20) blast pipe, (21) ash bin, (22) ash output passage, (23) fire grate, (24) reflection arch, (25) secondary air channel I, (26) secondary air channel II, (27) secondary blast pipe bearing, (28) secondary air channel III, (29) smoke deflector, (30) smoke deflector II, (31) smoke deflector III, (32) smoke deflector IV, (33) smoke pipe seat, (34) inlet of cold air, (35) hot air outlet, (36) the retaining cigarette door of banking up a fire, (37) center iron rod, (38) secondary air channel II sleeve pipe, (39) motor, (40) worm type of reduction gearing, (41) bearing, (42) bent axle, (43) connecting rod, (44) mechanical push rods, (45) furnace outer wall.

Constitute a garden cylindricality body of heater profile by stove roof sheet (2), furnace outer wall (5) and smoke pipe seat (33).In body of heater, constitute a cubic cylinder internal protecting wall with truncated cone top by combustion chamber top board (1) and furnace core wall (4).Space between the interior outer furnace wall is heated air chamber.Adjacent two plates of opening direction that are welded with four Contraband shape dividing plate I, II, III, four Contraband shape dividing plates of IV (seeing label on the figure (3), (6), (8), (11)) in air chamber differ 180 °, and the flow process (see figure 2) that forces the flow direction of air to form catadioptric formula like this increases the heat exchange effect.Be welded with a lot of air hoses (seeing (7) among the figure, (10)) at internal protecting wall, air flows through in managing.Pipe heat in the exterior combustion gas cross-current, the conduction of heat by tube wall makes the heat of combustion gas pass to air, and air themperature is improved.Air hose is embedded on the internal protecting wall with the method for compressing, the structure thermal stress that can reduce in temperature changing process like this to be produced and prolong furnace life.Four groups of smoke deflectors as shown in Figure 1 are housed in that air hose is intrafascicular.The smoke deflector guiding gas is upwards flowed along the route of turning back by the stove below, is increased in residing time in furnace, can increase heat transfer process and the discharge capacity that reduces flue dust.Stove below is a burner hearth, and burner hearth is by the furnace chamber in cubic cross section and be contained in fire grate (23), chimney arch (12), reflection arch (24) secondary air channel I (25), secondary air channel II (26), secondary air channel III (28), coal feeding hole (13), three coal current plates (14), the connecting plate (15) of below and go out breeching formations such as (22).Coal is dropped in the stove by coal feeding hole (13), fill up by depositing in the coal chamber that chimney arch (12) coal current plate (14) and stove inwall (4) are examined, some coal longshore current coal plate current makes coal move forward and constantly be flow on the fire grate by coal current plate with fire grate in push rod reciprocating motion process to fire grate.Coal falls into ash bin at the lime-ash that burns on the fire grate, burnt when fire grate moves.The front sheet of ash bin is inserted on the casing, when removing ashes, mentions front sheet, ash bin is opened carried out deashing.The door-plate of the outlet of ash output passage (22) is that hinge structure limit by the top is on grey-way.It can prevent lime-ash, gets back in the burner hearth with fire grate.A wind is the below that is entered fire grate (23) by blast pipe (20) during burning, enters the coal seam through fire grate and burns, and the top, coal seam of burning is three secondary wind inleting tubes.Secondary wind inleting tube I, III, be

Common steel tube.They are embedded in respectively in reflection arch (24) and the chimney arch (12), and a plurality of passages are arranged on the secondary air channel vertically, and the direction of passage is to make air blow to central authorities, at a reflection arch (24) of passage direction.And have notch on the refractory masses of chimney arch (12) air is passed through.Its notch be shaped as V-arrangement.Secondary air channel I, III can be inwall (4) and furnace outer wall (5) the two ends logical atmosphere of straight tube by body of heater.Also can be JiongXing Guan, between interior outer furnace wall, reach inlet air plenum down in the chamber downwards.Secondary wind inleting tube I, III, air be by the self-priming air intake.Secondary inlet pipe II be contained in as shown secondary wind inleting tube I, III, middle it be that one side from body of heater stretches in the burner hearth.Secondary wind inleting tube II (26) stretches into interior its termination of stove by secondary air pipe-in-pipe (38) and locatees in secondary air pipe support (27).A center iron that increases flowing velocity is arranged in the middle of secondary wind inleting tube II (26).Secondary wind inleting tube to the coal seam direction, be drilled with many apertures for the secondary wind to flame, the air of secondary air channel II is to the horn mouth forced air induction of import by air blast.In the stove course of work, coal on the fire grate and by below the supply air burn.The intact gas of unburned in the fugitive constituent and combustion gas that do not burn completely is mixed into a step with secondary wind and burns, combustion gas heating a heatable brick bed arch, and reflection arch carries out preheating with reflect heat to the coal seam again, the space between the combustion gas process air that burn is restrained.Under the guiding of guide plate, upwards flow, discharge by chimney at last, combustion gas in flow process by internal protecting wall and air hose, heat is passed to heated air.Entered in the chamber between the inside and outside wall by inlet of cold air (34) as the air of working medium, cold air enters the other end from an end of part air hose and flows out under the forcing of Contraband shape dividing plate, and an end that enters another part air hose again enters the other end and flows out.Carrying out so repeatedly is catadioptric mobile.Hot air outlet by the top flows out for using at last.Cold air is heated by internal protecting wall and air hose in flow process.Because when throwing coal is not that coal is directly invested fire grate, but, push the stove internal combustion by pushing away the stove device more earlier depositing the stop of coal chamber.So just significantly reduced because the coal dust of having kicked up when throwing coal is discharged with flame, in addition in the flow process of combustion gas in the stove prevention current downflow at air hose and smoke deflector slow down, the dust in the combustion gas can be deposited in the stove.Can reduce pollution like this to environment.

The utility model is delivered coal with coal pusher, and coal pusher can be manual.Can be well automatic.As shown in Figure 4, the combustion process that makes stove like this can change in the periodicity combustion process of handwarmer greatly very near continuous burning, and excess air coefficient can not be in best situation, thereby can improve efficiency of combustion.In order to guarantee the temperature of burner hearth, three rows' the air hose and the interior table of furnace wall all have heat-resistant material layer down.

Embodiment of the present utility model is that a body of heater footpath is 1500 millimeters, height is 2985 millimeters, it is that the length of side is 950 millimeters a square that 89 air hose combustion chambers are arranged, per hour consuming coal is 30 kilograms, per hour can produce 5400 cubic metres of hot blasts, 10 ℃ of inlet temperatures, outlet temperature are 150 ℃, gross efficiency is more than 70%, 230 ℃～250 ℃ of exhaust gas temperatures.

Claims (5)

1, hot-blast stove is formed body of heater by interior outer furnace wall, with steel plate be welded into as, the cavity between the interior outer furnace wall is an air chamber, the inner chamber that internal protecting wall surrounded is a burner hearth, upper furnace is divided into flue and heat exchanger, and the bottom is a fire grate, and the fire grate top is chimney arch and secondary air channel, be the combustion chamber between fire grate and the chimney arch, the right is a continuous coal propulsive mechanism (15), (16), (17), (18), (19) left side is an ash hole, and the fire grate below is the air feed chamber, and the body of heater the top is exhaust opening (33), (34) be air intlet, (35) be air outlet slit, it is characterized in that fire grate be placed on can be reciprocating on the bearing moving grate, chimney arch has two, one is to constitute to deposit the chimney arch (12) of coal chamber, one is the reflection chimney arch (24) to new coal preheating, and secondary air has three, and air guide dividing plate (3) is arranged in the air chamber between inside and outside wall, (6), (8), (11) have flue gas guide plate (29), (30) in the gap of the air hose of upper furnace heat exchanger, (31), (32).

2, hot-blast stove according to claim 1, it is characterized in that: in three secondary air channels (26), (28), two airducts are embedded in chimney arch (24) and the chimney arch (12), in direction in the face of central secondary air channel (26), have groove along chimney arch on the secondary air channel length, and have many fumaroles on the secondary air channel wall of groove correspondence, central authorities' secondary air channels (26) are between two chimney arch, in the face of the fire grate direction has many fumaroles, central authorities' secondary air channel is one, and one end bearing is on internal protecting wall by the copper pipe that stretches into burner hearth outside the body of heater, and an end is stretched outside stove, external part is a horn mouth outside stove, can natural air inlet, also can force air intake by air blast, a center bar of regulating wind speed is arranged at the airduct center.

3, hot-blast stove according to claim 1 is characterized in that four air guide dividing plates (3) of adorning in the air chamber, (6) between inside and outside wall, (8), (11) shape is a Contraband shape plate, is welded on the inside and outside wall, and the opening direction of two neighbouring dividing plates differs 180 °.

4, hot-blast stove according to claim 1 is characterized in that between the air hose (7) at heat exchanger four pairs of smoke deflectors (29) being arranged, (30), (31), (32).

5, hot-blast stove according to claim 1, the motion that it is characterized in that fire grate can be manual, also can be automatic.

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