CN2115466U - Coal burning heating furnace - Google Patents

Abstract

The utility model relates to a coal-fired heating stove device capable of preheating and retorting coal before ignition and combustion. The device is composed of a continuous coal feeding machine and a pit-shaped combustion chamber which is provided with a sloping fire grate with air holes and a slug dropping device, wherein, a heat insulating and preheating passage is arranged outside a stove wall of a coal feeding opening of the combustion chamber, the continuous coal feeding machine connected with the coal feeding opening is arranged in the passage. The passage has a coal feeding function, a preheating function and a retorting function and organizes even combustion, and the continuous coal feeding machine makes coal beds stacked into thick coal beds for combustion for increasing the strength of the volume heat of the combustion chamber. Thus, heat is released and concentrated instantly. The heating stove can heat rapidly under the premise of energy saving and environmental protection.

Description

Coal burning heating furnace

Utility model relates to a kind of coal-fired furnace, particularly about can preheating before fire burns, the coal-fired furnace of destructive distillation fire coal.

The present middle-size and small-size coal-fired furnace that generally uses has deliver coal sectional combustion heating furnace and manually deliver coal and be the heating furnace that stacks burning of horizontal reciprocating furnace grate.The horizontal reciprocating furnace grate heating furnace of delivering coal, its main composition, be that auxilliary establishing worked the horizontal reciprocating furnace grate of delivering coal and organizing the burning double action simultaneously in shape combustion chamber, tunnel, the combustion space communicates with the space of delivering coal, the combustion process of raw coal is very long, and volatile matter and fixed carbon burn cmpletely in the raw coal, thereby oke exhaust blackness is low, residual charcoal is few, and this is its advantage.But owing to promptly produce burning in the process of delivering coal, the combustion process of length not only makes shop fire grate coal consumption increase, and causes heat to discharge dispersion, and the volume calorific intensity in primary zone is on the low side, and giving quickening initial stage programming rate and reducing coal consumption has increased difficulty.Secondly, fire grate segment blows because of slagging scorification resistance and high temperature easily, causes mechanical breakdown to increase, and maintenance is frequent.

Manually delivering coal stacks combustion heating furnace, combustion chamber and is shape chamber, hole shape, and raw coal just directly adds on the coal seam of red-hot burning by coal feeding hole, makes that volatile matter and fixed carbon run into the red-hot fire burns of overflowing in instantaneous in the raw coal.Thereby heat release is concentrated, and it is strong to break out power, initial stage quick heating, combustion chamber volume calorific intensity height.But the new raw coal that adds is to finish preheating and drying, destructive distillation and volatilization rapidly to separate out in the combustion chamber.Often because of can not get enough air-breathings, make the fugitive constituent of separating out decompose under anoxia condition, be cracked into fine carbon black particle, favorable current is overflowed from chimney, not only produces a large amount of black smokes, contaminated environment, and reduced rate of energy.Secondly, manually delivering coal to add is difficult for evenly, and delivers coal and cause heat to scatter and disappear and cold coal preheating and drying, will influence the stability of furnace temperature.

The purpose of utility model is the advantage of comprehensive above-mentioned prior art, overcome its deficiency, a kind of initial stage quick heating that both had is provided, stoking, burning are evenly, furnace temperature is stable, volume calorific intensity height, can make raw coal finish preheating and drying before the combustion chamber fire burns entering again, the begun novel coal heating furnace of process of burnings such as preliminary destructive distillation.

Better stack fired state for fire coal is had, another purpose of utility model is that a kind of slag device that falls automatically that can remove the bottom cinder automatically is provided in above-mentioned coal-fired furnace.

For achieving the above object, the basic design of utility model be to make deliver coal (destructive distillation) separate in mechanism with burning, make raw coal in the red-hot baking that is subjected to from the combustion chamber, tentatively after the destructive distillation, send into the combustion chamber and be and stack concentrated combustion.Specifically, the utility model coal-fired furnace, comprise the shape combustion chamber, shape chamber, hole that has coal feeding hole that furnace wall constitutes, what be placed in supporting fuel in the described combustion chamber has the hole deviation fire grate and the slag device that falls, air compartment and ashcan with the below, it is characterized in that: described combustion chamber coal feeding hole furnace wall has an insulation, preheating channel outward, and a mechanism that delivers coal continuously of joining with coal feeding hole is arranged in the passage.

Below utility model is done comparatively to describe in detail, further to understand the utility model.The hole deviation fire grate is arranged and the slag device that falls in the combustion chamber, play the burning of supporting fuel tissue and get rid of the function of coal-fired bottom cinder, both cooperations have guaranteed the coal-fired concentrated combustion that stacks.It constitutes, and can be one and be made up of hole deviation fire grate and a porose turnover panel fire grate, or be made up of oblique fire grate and centipede fire grate, endless-chain or push pedal etc., wherein formations such as turnover panel fire grate, centipede fire grate, endless-chain, the push pedal slag device that falls.Get rid of the cinder that after-flame gradually moves down, the supporting fuel that also has concurrently that has is organized combustion function.The mechanism that delivers coal continuously in insulation outside the coal feeding hole, the preheating channel is made up of the coal-storing hopper of mending device for coal such as bottom opening and continuous coal conveyor, carry continuously evenly, add and having finished the raw coal that (preheating, destructive distillation) prepared in burning to the combustion chamber, what of the destructive distillation degree and the amount of delivering coal can be by regulating delivered coal layer thickness and the speed of delivering coal control.Because stove (every) wall separates air feed, combustion chamber and the destructive distillation mechanism that delivers coal, raw coal can not burn in course of conveying, just be subjected to from the red-hot radiant baking in combustion chamber, insulation, the preheating channel burning initiating process such as finish that gradually drying and preheating, destructive distillation volatilization is separated out.The raw coal that obtains destructive distillation enters the combustion chamber, stacks on the coal seam of red-hot burning, rapid fire burns release heat, and converge into fugitive constituent that near the coal seam destructive distillation the coal feeding hole is overflowed can be for the red-hot flame flow of heating.Coal conveyor can be a similarly continuous coal conveyor such as horizontal reciprocating furnace grate coal conveyor, circulating conveyor chain, ladder reciprocal grate continuously.Coal conveyor places in the passage, made full use of the coal feeding hole radiant heat energy, guaranteed the preliminary destructive distillation of raw coal, its fugitive constituent of separating out is leaked, waste energy, it can surround the whole mechanism that delivers coal, and also can only surround coal conveyor coal supply face top, its formation can be that part furnace wall extension surrounds, also can be separately, additional.Burn for avoiding flame combustion chamber to follow to the coal seam is counter through coal feeding hole, its outer cover height with a little more than coal supply thickness for well.For improving the destructive distillation effect, can suitably strengthen the coal feeding hole area, especially height causes a preheating space.In addition, on the furnace wall of heating furnace (but operating surface), can leave observation, the window that pokes fire (having standby coal, slag-tapping function simultaneously concurrently).

Another purpose of utility model realizes, is a pair of ratchet slag cylinder that falls is set below there is the hole deviation fire grate foregoing combustion chamber, and makes it separately that excessively heated axle relatively rotates.The ratchet that the rotates slag cylinder that falls can be used for helping broken Jiao and grating to discharge cinder, reaches and more helps stacking burning to improve and to improve air feed to the combustion chamber.Ratchet fall the slag cylinder can be manually or machinery drag, wherein a kind of mode preferably for and the shared power source of the mechanism that delivers coal continuously, as obtaining power by arrangement of clutch and/or transmission component.

Fig. 1 is the plan structure schematic diagram of an embodiment of utility model.

Fig. 2 is that figure one A-A is to cutaway view.

Embodiment: as accompanying drawing.In the shape combustion chamber, shape chamber, hole 22 that the insulation furnace wall constitutes, be provided be down " eight " font hole deviation fire grate 19,21 arranged, the porose in relative rotation ratchet of a pair of excessively heated axle separately slag cylinder 16,18 that falls is arranged below the narrow end opening of fire grate.The below is air compartment and grey pit, interior once airduct 17.Leave a spatial altitude that surrounds greater than passage with respect to the bigger coal feeding hole 23(of the passage 8 of delivering coal of feeder and heat-insulation preheating such as its height on the furnace wall of combustion chamber, fire grate top), combustion chamber coal feeding hole furnace wall is outer to have a horizontal reciprocating furnace grate coal conveyor 10 perpendicular to the coal feeding hole direction, the coal conveyor passage is made of the part of insulation furnace wall, coal conveyor one end links to each other with coal feeding hole, there is the coal-storing hopper 9 of a bottom opening other end top, and the flashboard 7 that can regulate coal-supplying amount is arranged in the coal-storing hopper.The horizontal reciprocating furnace grate coal conveyor, by movable furnace grate plate 14 and 15 alternate compositions of fixed grate film, moving grate is fixed on the moving grate bar 12 of band roller 13.Do straight reciprocating motion by eccentric wheel 1 drivening rod 11 on 2 of the decelerators, affect the moving grate bar, make movable furnace grate plate along the fixed grate film inclined-plane climbing or retreat, with raw coal along E to conveying.Each fire grate segment adopts only piece overall structure, is made by heat resisting cast steel or nonmetallic materials.Ratchet falls the slag cylinder then by meshing gear 5,6.Bushroller chain 4 and the coal conveyor transmission component that the Sleeve Roller Chain Wheel 3 of clutch forms that can endwisely slip on the 1 device axle that slows down obtains power.Leave observation on the furnace wall of combustion chamber (but operating surface), window 20 pokes fire.

During work, driving movable furnace grate plate by reductor through transmission mechanism moves back and forth along the fixed grate film inclined-plane, continuously the raw coal in the coal-storing hopper is carried to the combustion chamber, raw coal obtains drying, preheating gradually in course of conveying, when being delivered near the coal feeding hole, owing to be subjected to sending red-hot baking from contiguous combustion chambers burn coal seam, finish destructive distillation, black smoke had both been eliminated in air mixed combustion in fugitive constituent that volatilization is separated out and the furnace gas, had utilized heat energy again.After the raw coal of preliminary destructive distillation enters the combustion chamber, constantly on burning coal layer, stack concentrated combustion, make it to have higher volume calorific intensity and programming rate faster.Move down the cinder of after-flame gradually, stir grating by the slag cylinder that falls of ratchet in relative rotation, along B to draining into ashcan.Combustion air in the combustion chamber is then upwards replenished by bottom air compartment through hole on ratchet falls slag cylinder, oblique fire grate.

The utility model formation is not limited thereto embodiment.

Utility model is compared than prior art, not only has stoking, burning evenly, and the heat instantaneous relase is fast and concentrate, volume calorific intensity height, the characteristics such as programming rate is fast; Simultaneously again can economic utilization heat energy, eliminate soot emission, energy savings, and can reduce because of coal supply and open the heat loss that fire door causes, can make the combustion chamber keep all the time higher or stable furnace temperature. Automatically broken burnt deslagging can guarantee combustion

Claims (9)

1, a kind of coal-fired furnace, comprise the shape combustion chamber, shape chamber, hole that has coal feeding hole that furnace wall constitutes, what be placed in supporting fuel in the described combustion chamber has the hole deviation fire grate and the slag device that falls, air compartment and ashcan with the below, it is characterized in that: described combustion chamber coal feeding hole furnace wall has an insulation, preheating channel outward, and a mechanism that delivers coal continuously of joining with coal feeding hole is arranged in the passage.

2,, it is characterized in that the said mechanism that delivers coal continuously is made up of the coal-storing hopper and the continuous coal conveyor of bottom opening according to the described coal-fired furnace of claim 1.

3,, it is characterized in that said continuous coal conveyor is the horizontal reciprocating furnace grate coal conveyor according to the described coal-fired furnace of claim 2.

4,, it is characterized in that having in the said coal-storing hopper flashboard that can regulate coal-supplying amount according to the described coal-fired furnace of claim 2.

5,, it is characterized in that the overhead height of said insulation, preheating channel is lower than coal feeding hole upper edge height according to the described coal-fired furnace of claim 1.

6,, it is characterized in that the said slag device that falls is a pair of ratchet slag cylinder that falls of can excessively heated axle doing in relative rotation according to claim 1,2,3,4 or 5 described coal-fired furnaces.

7,, it is characterized in that said ratchet falls and air vent arranged on the slag cylinder according to the described coal-fired furnace of claim 6.

8,, it is characterized in that the said ratchet slag cylinder that falls is linked to each other with the coal conveyor power source by transmission component according to the described coal-fired furnace of claim 7.

9, described according to Claim 8 coal-fired furnace is characterized in that observation is arranged on the furnace wall of combustion chamber, window pokes fire.

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