CN2093988U - Underfeed domestic coal-fired stove - Google Patents

Abstract

The utility model relates to a domestic coal-fired stove, particularly an underfeed domestic coal-fired stove, which is characterized in that an underfeed device composed of a coaling chamber, a stove door, a track collecting type grate and a fork type coal support device is arranged between a stove chamber and a slag discharge chamber. When the coal is fed, the fork type coal support device is raised for butting and clearing a coal block on the top surface out of a stove panel. Then, new coal blocks are added into the coaling chamber through a stove door mouth. At last, the fork type coal support device is drawn out. The utility model has the advantages of high thermal efficiency, little harmful gas and black smoke discharge, simple structure, low cost, convenient operation, etc. The utility model is suitable for popularization and application for household coal stoves.

Description

Underfeed domestic coal-fired stove

The utility model relates to the residential coal combustion stove, particularly a kind of underfeed civil stove.

At present, the most civil stove of China is to manufacture and design in the mode that the upper coal feeding piece burns from top to down.This stove only is applicable to anthracite, if bituminous coal, no matter its structure how, always keep away unavoidable incomplete combustion, the thermal efficiency is low, discharges shortcomings such as too much pernicious gas and smoke pollution environment.For this reason, the design that adds coal incinerators under has caused the attention of units concerned with manufacturing.In the prior art, China's utility model patent bulletin successively discloses three kinds of such stoves (CN86207646U, CN87216542U and CN2059212U), the structure of these stoves respectively has the feature of oneself, basically can overcome the shortcoming of upper coal feeding piece combustion furnace, but because structure is all comparatively complicated, therefore the cost height does not also obtain excellent popularization and uses.

The purpose of this utility model is to overcome the deficiencies in the prior art, provides underfeed civil stove a kind of simple in structure, easy to use newly to design.

Structure of the present utility model is such: as shown in drawings, its furnace panel (2), furnace shell (3), flue (4), heat-insulation layer (5) and deslagging chamber (10) and existing coal furnace are basic identical, and difference is also to have installed by the corresponding coal chamber (7) that engages and have coal filling hole (71) with flue (4) of inner chamber between flue (4) and deslagging chamber (10), relative with coal filling hole (71) and be opened in fire door (6) on the furnace shell (3), be positioned at be provided with below the coal chamber (7) the rail mounted grate (9) that is not less than two L type tracks (91) at least with and the following coal block assembly that constituted of the V shape coal-carrying device (8) of holder coal bar (81) and L type track (91) corresponding matching.

Description of drawings:

Fig. 1 is the longitudinal sectional view of a kind of concrete structure of the utility model.

Fig. 2 is coal chamber (7) among Fig. 1, rail conduction grate (9) and V shape coal-carrying device (8) shape and the stravismus schematic diagram that cooperates.

When implementing the utility model, available steel plate in coal chamber (7) or cast iron make the U-shaped shape just can, its inwall width should be basic identical with flue (4) inner cavity size, is beneficial to the adding of coal cinder.The rear wall of coal chamber (7) can be semicircle or rectangle, but is preferably semicircle.Preferably have a breach (72) that can support V shape coal-carrying device (8) crosspiece (82) in the top of coal filling hole (71) both sides, end, new stoking piece allow V shape coal-carrying device (8) after lifting coal cinder floor (1), can be fixed on the top of coal chamber (7), so that can add in the coal chamber (7) from coal filling hole (71).The available angle steel of rail mounted grate (9) is welded.In order to reduce the heat loss that fire door (6) is located, preferably be provided with soft layer (61) at fire door (6) inwall.

During coal, open fire door (6), hand-held handle (83) is inserted to the holder coal bar (81) of V shape coal-carrying device (8) rear wall of coal chamber (7) along track (91), lift V shape coal-carrying device (8) then, and crosspiece (82) is stuck on the breach (72) of coal filling hole (71), the coal cinder of the uppermost slagging of having burnt of coal cinder layer (1) this moment has been held out outside the furnace panel (2), and promptly available combination long roundnosed pliers presss from both sides it from body of heater.Then initiate coal cinder is put into track (91) from coal filling hole (71) and go up and be pushed into coal chamber (7) rear wall, extract V shape coal-carrying device (8) then gently out, allow coal cinder layer (1) drop down onto on the new stoking piece, close upper furnace door (6) again and just can finish the coal program.Because the track (91) of rail mounted grate (9) can be made object of reference, and the inner chamber of coal chamber (7) and rear wall can play position-limiting action, therefore when each coal, as long as allow coal cinder middle two exhausting holes and track (91) push evenly in the coal chamber (7), just can guarantee that the interior coal cinder of new stoking piece and flue (4) is to the hole.In use, if do not have timely coal or when lighting a fire in the stove coal cinder few, the bottom coal cinder is burnouted earlier, this moment, available common way clearly to deslagging chamber (10), and then was added new coal cinder by above-mentioned way with it.

The utility model is except having underfeed furnace thermal efficiency height, outside the few advantage of pernicious gas and soot emission amount, goes back that lamps structure is simple, low cost of manufacture and easy to operate advantage. Being particularly suitable for civilian combustion path applies.

Claims (2)

1, a kind of underfeed civil stove, include furnace panel (2), furnace shell (3), flue (4), heat-insulation layer (5) and deslagging chamber (10) is characterized in that also installing one by the corresponding coal chamber (7) that engages and have coal filling hole (71) with flue (4) of inner chamber between flue (4) and deslagging chamber (10), relative with coal filling hole (71) and be opened in fire door (6) on the furnace shell (3), be positioned at be provided with below the coal chamber (7) the rail mounted grate (9) that is not less than two L type tracks (91) at least with and the following coal block assembly that constituted of the V shape coal-carrying device (8) of holder coal bar (81) and L type track (91) corresponding matching.

2, coal furnace according to claim 1 is characterized in that preferably having a breach (72) that can support V shape coal-carrying device (8) crosspiece (82) in the top of coal filling hole (71) end both sides.

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