CN201396768Y

CN201396768Y - Immersion type water-cooling rolling fire grate

Info

Publication number: CN201396768Y
Application number: CN2009201515654U
Authority: CN
Inventors: 孟庆忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-02-03
Anticipated expiration: 2019-04-30

Abstract

The utility model discloses an immersion type water-cooling rolling fire grate which comprises a row of rolling rollers, wherein the rollers are formed by alternately arraying driving rollers and driven rollers which are driven by a motor, the driving rollers are connected by gears; the rollers are circular ring flanges respectively arranged on a cylinder or a round bar along axial direction at aninterval of 100-150mm, a gap between the two adjacent flanges is larger than the axial width of the flange, the flanges on the adjacent rollers are in staggered arrangement; a water tank is arrangedat the lower part of the rollers, the lower part of the rollers is at least immersed in the water tank. The immersion type water-cooling rolling fire grate has the advantages that the water tank is arranged at the lower part of the fire grate, such that the fire grate is immersed in the water not to burn out because of superheat. The fire grate rolls, which is fit for separating a solid fuel fromthe burned coke button so as to increase the burn-out ratio of the fuel and high reliability of the fire grate is realized because large cinder cannot block the fire grate; thereby largely increasingenergy-saving and environment-friendly performances and prolonging service life.

Description

Immersion water-cooled rolling fire grate

Technical field

The utility model relates to a kind of fire grate, is a kind of immersion water-cooled fire grate, can be by the rolling of fire grate, realize separating of solid fuel and the lime-ash that has burnt, and carry out automatic removing dust, be applicable to the boiler or the combustion heating system of air intake and fuel above fire grate.

Background technology

Tradition coal-burning boiler or other fuel-device, must be provided with fire grate (or being called fire grate), its effect one is to want support to live solid fuels such as coal, the burning of fuel is carried out above fire grate, and the lime-ash that burns will be gone out clearly from the fire grate bottom, and another effect is to make air to enter and upwards to connect whole fuel bed under fire grate.

For preventing the fire grate temperature distortion, the fire grate that general boiler is used adopts pipe, and the inner cooling water that feeds of pipe is with cooling.Its effect of present fire grate only is the support solid fuel, can not automatically fuel be separated with the lime-ash that burns, and needs artificial ash discharge, promptly discloses lime-ash and coke button above the fire grate with instrument, makes its loosening space that allows the lime-ash that burns fall the fire grate bottom.This mode labour intensity is big, and the dust during ash discharge also has harm to operator's health, the danger that also exists the high-temperature ash that is discharged to scald.

The utility model people has developed a kind of counter-burning type solid fuel fired boiler, comprises airtight burner hearth and high temperature burning chamber two parts with fuel storage and combustion function; Solid fuel is added in the airtight burner hearth, and carry out the solid fuel layer bottom of the burning of fuel in burner hearth; By air blast air is pressed into burner hearth, the air of different proportion is supplied with in each zone in fuel bed, the combustible gas that air and fuel combustion generate, the high-temperature flue gas that confuses the burning generation enters burning chamber and fully burns together from the side direction burner output of burner hearth side-lower.This boiler is that side air admission forms pure flame at burning chamber's fuel of side direction, can not use fire grate, perhaps fire grate only plays the effect of support solid fuel, the demand that provides condition and generation for the formation and the application of immersion water-cooled rolling fire grate of the present utility model, through the utility model people's research and test, there is the utility model the beginning.

The utility model content

At existing fire grate can not automatic removing dust above-mentioned deficiency, and the demand of the counter-burning type solid fuel fired boiler of the utility model people exploitation, the purpose of this utility model is to provide a kind of immersion water-cooled rolling fire grate, lime-ash is discharged in mobile realization by fire grate automatically, utilize cooling water immersion fire grate realization water-cooled in the tank, anti-fire grate is burnt out.

The utility model adopts following technological means: a kind of immersion water-cooled rolling fire grate, comprise the round roller that a row rolls, and the circle roller is by initiatively justify roller and driven round roller replaces arrangement by motor-driven, and described initiatively justifying between the roller links with gear drive; Described round roller is for it axially is provided with an annular flange every 100-150mm in cylinder or round bar upper edge, and the gap between adjacent two flanges is greater than the axial width of flange, and the flanges on the adjacent two circle rollers are staggered; Be provided with water tank in circle roller bottom, the bottom of described at least round roller is immersed in the water tank.

What described round roller and flange thereof were more satisfactory is to adopt cast iron materials, is subjected to the not yielding and oxidation of high temperature.

Described gear is formed by be installed in described gear and the gear of kink on driven round roller of initiatively justifying on the roller by spline or key, and the gear on the adjacent round roller is meshing with each other.This spline structure is compact, and gear diameter does not need excessive.

Described gear top is provided with wheel cover, gear is sheltered from, with the normal operation that prevents that lime-ash or coke button from snapping in influences gear between the gear.

This immersion water-cooled rolling fire grate of the present utility model it is advantageous that water tank is arranged at the fire grate bottom, and fire grate is under water, can overheatedly not burn out.Fire grate rolls, and helps solid fuel and separates with the cinder that burns, and improves the burnout rate of fuel, and the bulk cinder can not block fire grate, realizes the high reliability of fire grate operation.The energy-saving and environmental protection performance and the life-span of boiler are improved greatly, and being applicable to does not need from bottom air admission or in the boiler or the combustion system of the side air admission of fire grate bottom fuel.

Description of drawings

Fig. 1 is an immersion water-cooled rolling fire grate structural representation of the present utility model.

The specific embodiment

Below by specific embodiment the utility model is described in further detail, to help understanding content of the present utility model.

As shown in Figure 1, be a kind of immersion water-cooled rolling fire grate, comprise the row cast iron circle roller of totally 5 rollings, the circle roller comprise by motor 4 drive initiatively justify roller 2 and driven round roller 2 ' alternately rearranges.Initiatively justify between the roller 2 and link with gear drive.Circle roller 2,2 ' is that it axially is provided with an annular flange 22,22 ' every 100-150mm in cylinder or round bar 21,21 ' upper edge, gap on the same round roller between adjacent two flanges is greater than the axial width of flange, so that the flange 22,22 ' on the adjacent two circle rollers is staggered.Be provided with water tank 1 in circle roller bottom, make the bottom of described at least round roller be immersed in the water tank 1.

Can by key or spline travelling gear be installed in the end of initiatively justifying roller 2, the adjacent travelling gear of initiatively justifying on the roller 2 is meshing with each other, and makes motor only drive and initiatively justifies roller 2 rotations.So but because to be separated with driven round roller spacing between initiatively justifying between the roller 2 bigger, the certainty gear diameter is also bigger.And more satisfactory mode is as shown in Figure 1, and described gear comprises by spline or key and be installed in the described gear 23 of initiatively justifying roller 2 ends, and the gear 23 ' of kink on driven round roller 2 ' form, and the gear 23,23 ' on the adjacent round roller is meshing with each other.This spline structure is compact, and gear diameter does not need excessive.Gear 23 ' on the driven round roller only is that a middle transition travelling gear is realized two transmissions of initiatively justifying between the roller, can not drive driven round roller and rotate.Only when a side card has lime-ash, can rotate so that lime-ash is discharged initiatively justifying under roller and the lime-ash effect.

Described gear top is provided with wheel cover (omitting among the figure), snaps in influence normal operation between the gear to prevent lime-ash or coke button.

Circle roller bottom is a cooling water tank 1, as long as will justify the flange on the roller even comprise cylinder or the Lower Half of round bar 21 is dipped in the water of water tank, because the circle roller can intermittently rotate during work, promptly can cool off fire grate.Can certainly make the cooling water logging cross round roller, promptly fire grate is submerged in the tank, and the water surface is higher than fire grate, seals but need to adopt modes such as mechanical seal or packing seal to realize water tank wall and pass between the power transmission shaft of water tank wall.The bearing block 3 that travelling gear and being used to is installed round roller both can be installed in outside the water tank 1 as shown in Figure 1, and lubricating oil easy to use and be convenient to safeguard can certainly be positioned at water tank.

In the water tank automatic ash discharging gear can also be set.

Fire grate when work, above the support solid fuel, fuel 100-300mm above fire grate highly burns, the cinder that burns with justify roller and contact.The circle roller is intermittently driven by motor, and blanking time, length was adjustable.When the circle roller rotated, lime-ash or coke button rolled on the circle roller, and the surface lime-ash of after-flame comes off gradually, and the gap between fire grate is fallen into the water tank to discharge out of the furnace.And the solid fuel that is not burnt is because volume is big and held with respect to the lime-ash that burns.Adopt driving shaft and the spaced mode of driven voller, the drive roll mode with respect to whole employings are rotated synchronously is difficult in solid fuel or the stuck by force gap between two rollers of lime-ash, to guarantee normal operation.Because lime-ash is to fall into water tank not have the dust generation, and can not scald operating personnel.

Claims

1, a kind of immersion water-cooled rolling fire grate comprises the round roller that a row rolls, and it is characterized in that: described round roller is by initiatively justify roller and driven round roller replaces arrangement by motor-driven, and described initiatively justifying between the roller connects with gear drive; Described round roller is for it axially is provided with an annular flange every 100-150mm in cylinder or round bar upper edge, and the gap between adjacent two flanges is greater than the axial width of flange, and the flanges on the adjacent two circle rollers are staggered; Be provided with water tank in circle roller bottom, the bottom of described at least round roller is immersed in the water tank.

2, immersion water-cooled rolling fire grate as claimed in claim 1 is characterized in that: described round roller and flange thereof adopt cast iron materials.

3, immersion water-cooled rolling fire grate as claimed in claim 1 or 2, it is characterized in that: described gear is formed by be installed in described gear and the gear of kink on driven round roller of initiatively justifying on the roller by spline or key, and the gear on the adjacent round roller is meshing with each other.

4, immersion water-cooled rolling fire grate as claimed in claim 3 is characterized in that: described gear top is provided with wheel cover.