CN2643222Y

CN2643222Y - Three-backstroke coal-burning vertical boiler

Info

Publication number: CN2643222Y
Application number: CN 03207679
Authority: CN
Inventors: 何艳军
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-29
Filing date: 2003-08-29
Publication date: 2004-09-22
Anticipated expiration: 2013-08-29

Abstract

The utility model discloses a vertical coal boiler with 3 return travels, and consists of a shell body, a smoke box, a fire tube, a towering pipe, a hot water chamber and a cast-iron grating arranged inside the shell body. The inside of the shell body is provided with a combustion chamber and a slag chamber. The top of the shell body is provided with a cold water inlet, a hot water outlet, a coal hole and a slag hole, and is characterized in that the smoke box is provided with a upper smoke box, a middle smoke box and a lower smoke box; the fire tube is provided with a first fire tube section, a second fire tube section and a third fire tube section. The first fire tube section connects the combustion chamber and the middle smoke box. The second fire tube section connects the middle smoke box and the lower smoked box. The third fire tube section connects the lower smoke box and the upper smoke box. The towering pipe is connected with the upper smoke box. Horizontal water channels communicated with a circulating water channel are respectively arranged between the combustion chamber and the lower smoke box, between the middle smoke box and the lower smoke box and between the middle smoke box and the upper smoke box. The utility model has the advantages of a long smoked flow range, good heat transmission efficiency, high heat efficiency, an easy-to-discharge scale deposit, a long service life of the boiler, a lower dust content in the exhaust smoke, a few pipe materials used, an easy production and a lower manufacturing cost.

Description

The coal-fired vertical boiler of three backhauls

Technical field the utility model relates to a kind of boiler for domestic, particularly relates to a kind of vertical boiler of fire coal.

The coal-burning boiler of background technology routine, circulating water pipe are to be parallel to ground and to be arranged in the housing of boiler, and flue gas enters fire tube from the combustion chamber, rise to smoke box and many horizontal rows water pipe is washed away carry out exchange heat after impact tube is discharged from chimney.The boiler of this structure, though the heat-transfer effect that horizontal water tube is washed away is good, the consumptive material height, and cause booster because of poor water quality causes the horizontal water tube scaling easily, cause boiler to be scrapped; And burning of coal is insufficient, and the dust content height of discharge promptly wastes raw material, and causes environmental pollution again.

It is long that utility model content the utility model content purpose provides a kind of flue gas flow, and heat-transfer effect is good, and thermal efficiency height can be discharged incrustation scale easily, boiler long service life, the coal-fired vertical boiler of three backhauls that the smoke evacuation dustiness is low.

Realize that the technical scheme that above-mentioned purpose adopts is: the coal-fired vertical boiler of a kind of three backhauls, it comprises housing, be positioned at smoke box, fire tube, impact tube and the casting furnace grate of housing, have combustion chamber and slag chamber in the housing, housing be provided with cooling water inlet, hot water outlet, the coal feeding hole corresponding with the combustion chamber, with the corresponding slag notch in slag chamber, be arranged at the circulating water channel of crustless sandwich and the hot hydroecium of case top; Impact tube is located at the top of housing and is positioned at hot hydroecium, casting furnace grate is installed in the housing bottom and between combustion chamber and slag chamber, it is characterized in that: smoke box is the upper, middle and lower-ranking smoke box, fire tube is one, two, 33 Cheng Huoguan, one Cheng Huoguan is connected the combustion chamber with the middle level smoke box, two Cheng Huoguan are connected the middle level smoke box with the lower floor smoke box, three Cheng Huoguan are connected lower floor's smoke box with the upper strata smoke box; Impact tube is connected with upper smoke box; Between combustion chamber and the lower floor's smoke box, between lower floor's smoke box and the middle level smoke box, be equipped with the horizontal aquaporin that connects with circulating water channel between middle level smoke box and the upper strata smoke box.

The coal-fired vertical boiler of three backhauls of this structure, coal is after combustion chambers burn, and the high-temperature flue gas that is produced enters the middle level smoke box through a Cheng Huoguan, enters lower floor's smoke box through two Cheng Huoguan again, and after three Cheng Huoguan rise to three layers of smoke box, after impact tube discharge by chimney.That is to say that high-temperature flue gas has passed through upper and lower three backhauls and just discharged by chimney through impact tube in housing, thereby has prolonged the flow process of high-temperature flue gas in housing greatly, and more heat transfer machine meeting is provided, heat-transfer effect is good, thermal efficiency height; Because of between combustion chamber and the smoke box, between smoke box and the smoke box, be provided with the horizontal aquaporin that connects with circulating water channel, the cross section that does not have the set many horizontal rows water pipe of conventional boiler to improve water flow channel, less scaling, eliminated booster hidden danger, thus prolonged boiler service life.Because high-temperature flue gas through the flow process of fire tube, smoke box, fire tube, smoke box, through replacing volume change, causes the flue gas flow rate conversion, the particle in the flue gas is sunk in smoke box again, thereby reduced the dustiness of discharging in the flue gas.

As of the present utility model perfect, housing is provided with the ash removing opening that communicates with the upper, middle and lower-ranking smoke box respectively, ash removing opening is equipped with damper, be beneficial to the cleaning flue dust on the one hand, simultaneously, can supply with fresh air in right amount, make and fail the material of sufficient combustion in the high-temperature flue gas and burn away by damper, further reduce the flue dust discharge rate, and improve boiler efficiency.

As of the present utility model further perfect, moving grate is installed in the combustion chamber, moving grate is divided into upper and lower combustion chamber with the combustion chamber, and the fire coal that upper combustion chamber falls in the lower combustion chamber can burn away, and further utilizes heat energy.

The coal-fired vertical boiler of this three backhauls, tubing consumes few, and is easy to manufacture, low cost of manufacture.

The description of drawings diagram is the structural representation of the coal-fired vertical boiler of the utility model three backhauls.

Among the figure: 1-casting furnace grate, 2-cooling water inlet, 3-combustion chamber, 301-upper combustion chamber, 302-lower combustion chamber, 4-one Cheng Huoguan, 5-lower floor smoke box, 6-middle level smoke box, 7-two Cheng Huoguan, 8-three Cheng Huoguan, 9-upper strata smoke box, 10-impact tube, 11-hot hydroecium, 12-hot water outlet, 13-ash removing opening, 14-coal feeding hole, 15-moving grate, 16-slag notch, 17-slag chamber, 18-housing, 19-circulating water channel, the horizontal aquaporin of 20-, 21-damper.

The specific embodiment is as shown in the figure: the coal-fired vertical boiler of a kind of three backhauls, it comprises housing 18, be positioned at smoke box, fire tube, impact tube 10 and the casting furnace grate 1 of housing 18, have combustion chamber 3 and slag chamber 17 in the housing 18, housing 18 be provided with cooling water inlet 2, hot water outlet 12, the coal feeding hole 14 corresponding with combustion chamber 3, with slag chamber 17 corresponding slag notches 16, be arranged at the circulating water channel 19 of housing 1 interlayer and the hot hydroecium 11 at housing 18 tops; Impact tube 10 is located at the top of housing 1 and is positioned at hot hydroecium 11, casting furnace grate 1 is installed in the housing 18 bottoms and between combustion chamber 3 and slag chamber 17, it is characterized in that: smoke box is a upper, middle and lower-ranking

smoke box

9,6,5, fire tube is one, two, 33 Cheng Huoguan 4,7,8, one Cheng Huoguan 4 is connected combustion chamber 3 with middle level smoke box 6, two Cheng Huoguan 7 are connected middle level smoke box 6 with lower floor smoke box 5, three Cheng Huoguan 8 are connected lower floor's smoke box 5 with upper strata smoke box 9; Impact tube 10 is connected with upper strata smoke box 9; Between combustion chamber 3 and the lower floor's smoke box 5, between lower floor's smoke box 5 and the middle level smoke box 6, be equipped with the horizontal aquaporin 20 that connects with circulating water channel 19 between middle level smoke box 6 and the upper strata smoke box 9.

The coal-fired vertical boiler of three backhauls of this structure, coal is after 3 burnings of combustion chamber, and the high-temperature flue gas that is produced enters middle level smoke box 6 through a Cheng Huoguan 4, enters lower floor's smoke box 5 through two Cheng Huoguan 7 again, and after three Cheng Huoguan 8 rise to three layers of smoke box 9, after impact tube 10 discharge by chimney.That is to say that high-temperature flue gas has passed through upper and lower three backhauls and just discharged by chimney through impact tube 10 in housing 18, thereby has prolonged the flow process of high-temperature flue gas in housing greatly, and more heat transfer machine meeting is provided, heat-transfer effect is good, thermal efficiency height; Because of between combustion chamber and the smoke box, between smoke box and the smoke box, be provided with the horizontal aquaporin 20 that connects with circulating water channel 19, the cross section that does not have the set many horizontal rows water pipe of conventional boiler to improve water flow channel, less scaling, eliminated booster hidden danger, thus prolonged boiler service life.Again because of the flow process of high-temperature flue gas through a Cheng Huoguan 4, middle level smoke box 6, two Cheng Huoguan, lower floor's smoke box 5, three Cheng Huoguan 8, upper strata smoke box 9, through replacing volume change, cause the flue gas flow rate conversion, particle in the flue gas is sunk in each smoke box, thereby reduced the dustiness of discharging in the flue gas.

As of the present utility model perfect, housing 18 is provided with the ash removing opening 13 that communicates with upper, middle and lower-ranking

smoke box

9,6,5 respectively, ash removing opening 13 is equipped with damper 21, like this, be beneficial to the cleaning flue dust on the one hand, on the other hand, can supply with fresh air in right amount by damper, make and fail the material of sufficient combustion in the high-temperature flue gas and burn away, further reduce the flue dust discharge rate, and improve boiler efficiency.

As of the present utility model further perfect, moving grate 15 is installed in the combustion chamber 3, and moving grate 15 is divided into upper and lower combustion chamber 301,302 with combustion chamber 3, like this, the fire coal that upper combustion chamber 301 falls in the lower combustion chamber 302 can burn away, and further utilizes heat energy.

Claims

1, the coal-fired vertical boiler of a kind of three backhauls, it comprises housing, be positioned at smoke box, fire tube, impact tube and the casting furnace grate of housing, have combustion chamber and slag chamber in the housing, housing be provided with cooling water inlet, hot water outlet, the coal feeding hole corresponding with the combustion chamber, with the corresponding slag notch in slag chamber, be arranged at the circulating water channel of crustless sandwich and the hot hydroecium of case top; Impact tube is located at the top of housing and is positioned at boiler, casting furnace grate is installed in the housing bottom and between combustion chamber and slag chamber, it is characterized in that: smoke box is upper, middle and lower-ranking smoke box (9,6,5), fire tube is one, two, 33 Cheng Huoguan (4,7,8), one Cheng Huoguan (4) is connected combustion chamber (3) with middle level smoke box (6), two Cheng Huoguan (7) are connected middle level smoke box (6) with lower floor's smoke box (5), three Cheng Huoguan (8) are connected lower floor's smoke box (5) with upper strata smoke box (9); Impact tube (10) is connected with upper strata smoke box (9); Between combustion chamber (3) and the lower floor's smoke box (5), between lower floor's smoke box (5) and the middle level smoke box (6), be equipped with the horizontal aquaporin (20) that connects with circulating water channel (19) between middle level smoke box (6) and the upper strata smoke box (9).

2, the coal-fired vertical boiler of a kind of three backhauls according to claim 1, it is characterized in that: housing (18) is provided with the ash removing opening (13) that communicates with upper, middle and lower-ranking smoke box (9,6,5) respectively, and ash removing opening (13) is equipped with damper (21).

3, the coal-fired vertical boiler of a kind of three backhauls according to claim 1 and 2, it is characterized in that: moving grate 15 is installed in the combustion chamber 3, and moving grate 15 is divided into upper and lower combustion chamber 303,302 with combustion chamber 3.