CN2558923Y - Coal fired stove - Google Patents

Abstract

The utility model relates to a stove furnace with smokeless and low-dust exhaust, which is arranged in a combustion chamber and adopts a combined grate. A flue gas outlet is arranged at the lower part of the combustion chamber and an air cooled type anti-coke device is employed to protect furnace wall. Air distribution, slag discharge, coal seam loosening and decaking are realized by the combined grate; the air cooled type anti-coke device heats cool air when protecting furnace wall, thus heating efficiency of the furnace is improved. In addition, conditions for generating black smoke is removed with the flue gas outlet arranged at the lower part of the combustion chamber and dust-exhaust capacity is rather low.

Description

A kind of coal furnace

The utility model relates to a kind of grate firing equipment, especially can realize the coal furnace of smokeless, low dirt discharging.

The hand burner be the most original grate furnace as shown in Figure 1, be characterized in that the fuel quilt is manually shed on red-hot coke layer discontinuously, the sequence of flow of burning required air is the ash door inflow of elder generation from equipment, upwards through fixed grate, ash bed on the fire grate, the red carbon-coating of red-hot burning passes new coal seam at last and enters burner hearth, and fuel just drops into the stage, the coal seam is the thickest, the flowing resistance maximum, the air capacity that sucks burner hearth is then bigger, the phenomenon of air capacity deficiency occurs.Later on along with fuel combustion becomes lime-ash, the continuous attenuate in coal seam, amount of supplied air increases, and the burning required air quantity constantly reduces, air capacity surplus then, this inharmonious fugitive constituent that causes generates black smoke when air capacity is not enough, cause the pollution to environment after chimney is discharged.Owing to frequent switch fire door coal, often the switch fire door is safeguarded grate, as makes Jiao, smooth grate etc. on the other hand, making cold wind scurry into burner hearth in a large number descends furnace temperature, be that fugitive constituent can't in time catch fire, and generate another key factor of black smoke, and so the inevitable airborne dust of operation is also big.As is generally known air and temperature are the necessary conditions of burning, and above-mentioned technology obviously is difficult to fully satisfy this requirement.

The purpose of this utility model provides a kind of coal furnace, and it can not only realize burning of coal easily, and can realize smokeless, low dirt discharging.

The purpose of this utility model is achieved in that the fire grate in the combustion chamber is knockdown; form by inclined push fire grate and dump grate; rotating dump grate can deslagging; can also become flexible the coal seam; improve air distribution; the inclined push fire grate is transporting coal; can break sticking in the time of slag; the enforcement of above-mentioned measure is enough to guarantee normally carrying out of coal combustion process; the flue gas outlet flue of combustion chamber is located on the fire grate plane; it is the bottom of combustion chamber; rather than as tradition, be located at the top of combustion chamber; owing to there is naked light on the fire grate constantly; flow through fire grate when top when flue gas is dirty; combustible not burned in the flue gas is at high temperature; in the environment of oxygen enrichment; can be lighted easily; burn; like this then eliminated the prerequisite that black smoke produces; because the coal seam does not have operations such as Jiao of beating; so airborne dust is little; and there is the effect of filter dirt in the coal seam when flue gas is dirty when passing the coal seam; thereby the dust-laden in the flue gas is extremely low; in order to prevent the slag action furnace wall, furnace wall high-temperature region, combustion chamber substitutes with air-cooled anti-coke installation, like this protection furnace wall life-span; with the cold wind heating, the thermal efficiency of stove is increased.

Owing to adopt such scheme guaranteeing to be easy to obtain the emission effect of smokeless, the low dirt of flue gas under the situation that coal is well burnt.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is that original hand burns the grate furnace structure chart

Fig. 2 is the profilograph of coal furnace embodiment

Fig. 3 is the drawing in side sectional elevation of embodiment

Among the figure: 1, firing door 2, ash door 3, ash chamber 4, fire bars 5, coal seam 6, combustion chamber 7, air channel 8, angle steel 9, billy gate 10, push rod 11, promote fire grate segment 12, fixed grate film 13, inclined push fire grate 14, fire door 15, folding flame stream breeching 16, stove skin 17, coal supply apparatus 18, furnace wall 19, outlet flue 20, dump grate 21, channel-section steel 22, ash chamber 23, ash door 24, left support abutment 25, return air chamber, a left side 26, hyoplastron 27, left side air-inlet cavity 28, arch 29, right air-inlet cavity 30, right return air chamber 31, right support abutment 32, air inlet ← wind

In Fig. 2; fire door (14); inclined push fire grate (13) dump grate (20); outlet flue (19); order is arranged; fixed grate film (12) in the inclined push fire grate (13) is connected with a separate housing; promote fire grate segment (11) and be connected, and dolly moves forward and backward according to push rod (10) and realizes that the top and bottom of promotion fire grate segment are dentalation (or groove) with billy gate (9) in being placed on the housing chamber; with the percent opening of realizing air distribution and need guaranteeing; the inclination maximum of dump grate (20) is 45 °, and in order to deslagging, it can make pectination; can also make tabular; then open the strip wind path onboard; fire grate percent opening about 25%, outlet flue (19) is located on the same plane of fire grate, highly be not more than stove dark 1/2; width and fire grate are wide; can be connected with heat transmission equipment as required, coal supply apparatus (17) is established in the top that connects front wall, and this layout is more suitable for being used with inclined grate; in order to reduce heat radiation protection coal supply apparatus in the stove, stream coal breeching is made broken line type.

In example shown in Figure 3, wind enters the air channel by air inlet (32), divide then and rise the air-cooled anti-coke installation of (as shown by arrows) inflow on the two curb two sides, device is a casing that is made of air-inlet cavity and return air chamber, separate with a hyoplastron (26) between air intake and the return air chamber, the return air chamber links to each other with the fire grate lower space, wind is introduced into air-inlet cavity (27,29), afterwards, the latter half of revolution at device enters return air chamber (25,30), flow into inclined push fire grate (13) and grey chamber (22) again, two places are distinguished and admirable does not answer bias current, air-cooled anti-coke installation has replaced the high temperature position of side wall, and it is difficult too low to flow through wind chamber wind speed, also can take safeguard procedures to side towards the fire.

Claims (4)

1, a kind of coal furnace, it is made up of furnace wall, combustion chamber, fire door, fire grate, outlet flue etc., and it is characterized in that: (A) fire grate is knockdown, is made up of inclined push fire grate and dump grate, (B) exhanst gas outlet is located at the bottom of combustion chamber, and (C) furnace wall has adopted air-cooled anti-coke installation.

2, coal furnace according to claim 1 is characterized in that: inclined push fire grate and dump grate are linked in sequence, and the stator of inclined push fire grate is tabular bar shaped, press overlapping mode and are connected with an independent case, and the top and bottom of pushing piece are dentalation.

3, coal furnace according to claim 1 is characterized in that: the width and the fire grate of outlet flue are wide, the height be not more than stove dark 1/2, be positioned at the same plane of fire grate on.

4, coal furnace according to claim 1 is characterized in that: air-cooled anti-coke installation is a casing that is made of air-inlet cavity and return air chamber, separates with a hyoplastron between air intake and the return air chamber, and the return air chamber links to each other with the fire grate lower space.