CN212108356U - Small-size automatic heating stove - Google Patents

Abstract

The utility model belongs to the technical field of energy-saving and environment-friendly heating stoves, and discloses a small automatic heating stove, which comprises a stove body, wherein a precombustion chamber is arranged on the stove body; the coal bunker is provided with a downward opening above the furnace body; the upper electric push plate is arranged below the opening of the coal bunker, can push the molded coal in the coal bunker into the pre-combustion chamber, and can isolate the coal bunker from the pre-combustion chamber; the push plate support is fixed on the furnace body and positioned below the upper electric push plate, and the upper electric push plate is connected with the push plate support in a sliding manner; and the lower electric push plate is connected to the furnace body in a sliding manner and is positioned below the push plate support. The utility model realizes the timed and quantitative coal supply by arranging the upper electric push plate to isolate the coal bunker and the precombustion chamber; and the safe operation of the small automatic heating furnace is ensured. The lower electric push plate is arranged, so that the red carbon in the pre-combustion chamber is pushed into the main combustion area, and meanwhile, the furnace slag in the main combustion area is pushed away from the main combustion area, and the continuity of pre-combustion and main combustion is realized; can reduce the emission of nitrogen oxides and smoke dust and improve the burnout rate of the molded coal.

Description

Small-size automatic heating stove

Technical Field

The utility model relates to an energy-concerving and environment-protective heating stove technical field especially relates to a small-size automatic heating stove.

Background

A small heating stove is a stove with rated evaporation capacity below 2t/h, and is mostly in a back burning mode with a water cooling pipe row. When the back-burning stove operates stably, the pyrolysis gas of the coal bed at the upper part of the stove penetrates through the red carbon layer at the lower part, layered combustion is carried out, and the stove is ensured not to smoke. The back-burning furnace can partially realize decoupling action due to layered burning, the emission of nitrogen oxides is lower, but the furnace body structure and the burning form of the back-burning furnace determine that the furnace can not automatically run, the ash burning rate is low, the heat efficiency of the furnace is low, manual coal adding and slag removing are needed, the running stability is poor, the labor intensity is high, and a red carbon layer which is directly burned is needed when workers operate, and the safety is poor.

The main combustion furnace is easy to realize automatic operation, the labor intensity is greatly reduced, but the hearth space of the small-sized furnace is too small, so that combustible components in smoke cannot be fully combusted, a large amount of black smoke is emitted, and the emission concentration of nitrogen oxides is very high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size automatic heating stove to improve the moulded coal burn-off rate, reduce the emission of nitrogen oxide and smoke and dust.

To achieve the purpose, the utility model adopts the following technical proposal:

a compact self-heating stove comprising:

the furnace body is provided with a precombustion chamber;

the coal bunker is provided with a downward opening above the furnace body;

the upper electric push plate is arranged below the opening of the coal bunker, can push the molded coal in the coal bunker into the precombustion chamber, and can isolate the coal bunker from the precombustion chamber;

the push plate support is fixed on the furnace body and positioned below the upper electric push plate, and the upper electric push plate is connected with the push plate support in a sliding manner;

lower electronic push pedal, sliding connection is in on the furnace body, be located the push pedal supports the below, one side of electronic push pedal is from nearly to far doing in proper order down prechamber, main combustion area and sediment case can with red charcoal in the prechamber pushes main combustion area, main combustion area top is the flue gas export.

Optionally, the precombustion chamber with main combustion zone sets gradually on an inclined plane of furnace body, the precombustion chamber is in the position on the furnace body is higher than main combustion zone, the inclined plane end is the slag box, electronic push pedal sliding connection down on the inclined plane.

Optionally, a precombustion chamber air distribution plate is arranged at the bottom of the precombustion chamber, a main combustion zone air distribution plate is arranged at the bottom of the main combustion zone, and the precombustion chamber air distribution plate and the main combustion zone air distribution plate are both communicated with a total air inlet of the furnace body.

Optionally, the main air inlet is arranged below the prechamber air distribution plate and the main combustion zone air distribution plate.

Optionally, a separation block is arranged between the precombustion chamber and the main combustion zone, the top of the separation block is fixed above the furnace body, and the distance between the bottom of the separation block and the inclined plane is not less than the height of the lower electric push plate.

Optionally, more than two heat exchange return strokes are arranged between the main combustion area and the flue gas outlet, the heat exchange return strokes are of a pipeline type, and the flue gas transmission directions in the two adjacent heat exchange return strokes are opposite.

Optionally, an induced draft fan is installed at the smoke outlet.

Optionally, a manual door is installed at the upper part of the coal bunker.

Optionally, the slag box side wall is provided with an oven door.

Optionally, the furnace body is coated with a heat exchange water jacket.

The utility model has the advantages that:

the utility model discloses a small-size automatic heating stove, through setting up electronic push pedal and keeping apart coal bunker and precombustion chamber, can supply the coal for the precombustion chamber after last electronic push pedal supports to move relative to the push pedal, realize the automatic coal supply of timing ration; and the ignition of the coal bunker is prevented, and the safe operation of the small automatic heating stove is ensured.

By arranging the lower electric push plate, when the lower electric push plate slides on the furnace body, the red carbon in the precombustion chamber can be pushed into the main combustion area, and simultaneously, the furnace slag in the main combustion area is pushed away from the main combustion area, so that the continuity of precombustion and main combustion is realized; the upper electric push plate and the lower electric push plate ensure the coal quantity in the precombustion chamber and the complete pyrolysis of the molded coal, can reduce the emission of nitrogen oxides and smoke dust, improve the burnout rate of the molded coal, and improve the heat efficiency and the running stability of the small automatic heating furnace.

Drawings

Fig. 1 is a schematic structural diagram of a small automatic heating stove according to an embodiment of the present invention.

In the figure:

1. a coal bunker; 2, an electric push plate is arranged; a first motor 201; 3, supporting a push plate;

4. a lower electric push plate; 401. a second electric machine; 5, a precombustion chamber air distribution plate; 6, a total air inlet;

7. a slag box; 8, oven door; 9, a main combustion area air distribution plate; 10, a main combustion zone;

11. a precombustion chamber; a first heat exchange return stroke; a second heat exchange return stroke; a third heat exchange return stroke;

15. and a flue gas outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a small-size automatic heating stove, as shown in figure 1, including furnace body, coal bunker 1, go up electronic push pedal 2, push pedal support 3 and electronic push pedal 4 down.

Wherein, a precombustion chamber 11 is arranged on the furnace body; the coal bunker 1 stores the molded coal, and the opening of the coal bunker 1 is arranged downwards above the furnace body; the upper electric push plate 2 is arranged below an opening of the coal bunker 1, can push the molded coal in the coal bunker 1 into the precombustion chamber 11, and can isolate the coal bunker 1 from the precombustion chamber 11; the push plate support 3 is fixed on the furnace body and is positioned below the upper electric push plate 2, and the upper electric push plate 2 is connected with the push plate support 3 in a sliding way; lower electronic push pedal 4 sliding connection is on the furnace body, is located the push pedal and supports 3 below, and one side of lower electronic push pedal 4 is from nearly to far away for prechamber 11, main combustion area 10 and sediment case 7 in proper order, can with red charcoal in the prechamber 11 pushes into main combustion area 10, and main combustion area 10 top is exhanst gas outlet 15.

The utility model provides a small-size automatic heating stove is through setting up electronic push pedal 2 and electronic push pedal 4 down, has realized the confession coal volume control to 11 and the main combustion zone 10 in precombustion chamber, guarantees the complete pyrolysis of moulded coal, can reduce nitrogen oxide and smoke and dust emission, improves the moulded coal burn-off rate, improves small-size automatic heating stove thermal efficiency and operating stability. Specifically, through the slip of last electronic push pedal 2 on push pedal supports 3, can open the coal bunker 1 export when last electronic push pedal 2 outwards slides, the moulded coal drops on push pedal supports 3, and after the moulded coal capacity, go up electronic push pedal 2 and slide forward and push the moulded coal on push pedal supports 3 and push precombustion chamber 11 and seal coal bunker 1 simultaneously, effectively prevent that coal bunker 1 from catching fire, guarantee the stove safe operation. By arranging the lower electric push plate 4, the red carbon in the precombustion chamber 11 can be pushed into the main combustion zone 10 to be continuously combusted, and the combustion process of the formed coal is completed; meanwhile, the slag or the furnace ash in the main combustion area 10 is pushed away from the main combustion area 10 and moves towards the slag box 7. Therefore, the linked coal feeding of the upper electric push plate 2 and the lower electric push plate 4 can ensure the coal storage amount in the precombustion chamber 11 and the complete pyrolysis of the molded coal.

It should be explained that the opening of the coal bunker 1 is over against the upper electric push plate 2 and the push plate support 3, so that when the upper electric push plate 2 retreats and opens the opening of the coal bunker 1, the molded coal just can fall on the push plate support 3, when the upper electric push plate 2 advances, the opening of the coal bunker 1 is gradually closed and the molded coal is pushed out of the push plate support 3 and then falls into the precombustion chamber 11, specifically, the molded coal falls on the precombustion chamber air distribution plate 5 of the precombustion chamber 11 so as to ignite and precombuste; when the molded coal is pre-burned into red carbon, the red carbon in the main combustion area 10 is burned out into slag or furnace ash, the lower electric push plate 4 slides forwards to push the red carbon into the main combustion area 10, meanwhile, the red carbon pushes the slag or furnace ash to leave the main combustion area, and the furnace ash or slag pushed for many times finally falls into the slag box 7; then the lower electric sliding plate 4 retreats, and the upper electric push plate 2 retreats to supply coal again. Therefore, the upper electric push plate 2 and the lower electric push plate 4 work alternately and are in linkage operation, so that not only is the timed and quantitative coal supply ensured, but also the continuous operation among the pre-burning, main burning and slag collection of the molded coal is ensured.

The utility model provides an among the small-size automatic heating stove, prechamber 11 and main combustion zone 10 are the intercommunication, in order to realize down that electronic push pedal 4 is smooth and easy to push into main combustion zone 10 with the red charcoal layer, the prechamber 11 and the main combustion zone 10 of small-size automatic heating stove set gradually on an inclined plane of furnace body, and the inclined plane end sets up slag box 7 for collect the slag, lower electronic push pedal 4 sliding connection is on the inclined plane. The position of the precombustion chamber 11 on the furnace body is higher than that of the main combustion zone 10, namely the precombustion chamber 11 is positioned above the inclined plane, the main combustion zone 10 is positioned below the inclined plane, and the slag box 7 is positioned at the tail end of the inclined plane, so that the design is favorable for the continuous sliding of the lower electric push plate 4 on the inclined plane.

As shown in figure 1, the bottom of the precombustion chamber 11 is provided with a precombustion chamber air distribution plate 5, the bottom of the main combustion zone 10 is provided with a main combustion zone air distribution plate 9, the precombustion chamber air distribution plate 5 and the main combustion zone air distribution plate 9 are both communicated with a main air inlet 6 on the furnace body, and the main air inlet 6 provides the air quantity required by combustion of the molded coal. Specifically, the main air inlet 6 is arranged below the precombustion chamber air distribution plate 5 and the main combustion zone air distribution plate 9 and supplies air upwards.

As shown in fig. 1, a baffle 16 is arranged between the precombustion chamber 11 and the main combustion zone 10, the top of the baffle 16 is fixed above the furnace body, the distance between the bottom of the baffle 16 and the inclined plane is not less than the height of the lower electric push plate 4, so that the lower electric push plate 4 can freely slide between the precombustion chamber 11 and the main combustion zone 10 to avoid obstruction, and meanwhile, the baffle 16 separates the upper space of the precombustion chamber 11 and the upper space of the main combustion zone 10 to avoid the influence of a smoke outlet 15 on the air draft of the precombustion chamber 11, thereby ensuring the sufficient precombustion of the molded coal in the precombustion chamber 11.

Preferably, more than two heat exchange return strokes are arranged between the main combustion area 10 and the flue gas outlet 15, the heat exchange return strokes are designed to be of a pipeline type, and the flue gas transmission directions in the two adjacent heat exchange return strokes are opposite, so that the length of the flue gas discharge channel is increased, and the flue gas is discharged after being sufficiently cooled.

The following examples are given for a detailed description.

Example (b):

a small-sized automatic heating stove is shown in figure 1, a coal bunker 1 is provided with a downward opening and is arranged above a stove body, molded coal is stored in the coal bunker 1, a manual door with good sealing is arranged at the upper part of the coal bunker 1, and the molded coal can be added by opening the manual door. The coal bunker 1 opening below sets gradually electronic push pedal 2, push pedal support 3 and electronic push pedal 4 down, and wherein, the push pedal supports 3 and fixes on the furnace body, goes up electronic push pedal 2 sliding connection and supports 3 and keep apart coal bunker 1 and precombustion chamber 11 on the push pedal, goes up electronic push pedal 2 and is responsible for the fixed quantity timing coal supply in 11 precombustion chambers to block coal bunker 1 and precombustion chamber 11, prevent that coal bunker 1 from firing. Lower electronic push pedal 4 sets up in the push pedal support 3 below and sliding connection on the furnace body, and lower electronic push pedal 4 the place ahead is prechamber 11 in proper order, main combustion zone 10 and sediment case 7 to prechamber 11 sets gradually on the same inclined plane of furnace body with main combustion zone 10, and lower electronic push pedal 4 is when sliding on the inclined plane, and lower electronic push pedal 4 can push the burnt lime-ash in the red charcoal in the prechamber 11 to main combustion zone 10 and main combustion zone 10 simultaneously is pushed away from main combustion zone 10. The slag pushed away for many times finally falls into the slag box 7 to be collected, so that the one-time combustion process of the molded coal is completed.

The bottom of the precombustion chamber 11 is provided with a precombustion chamber air distribution plate 5, the bottom of the main combustion zone 10 is provided with a main combustion zone air distribution plate 9, the precombustion chamber air distribution plate 5 and the main combustion zone air distribution plate 9 are both communicated with a total air inlet 6, specifically, the air quantity required by precombustion of the molded coal in the precombustion chamber 11 is provided by the precombustion chamber air distribution plate 5, the air quantity required by combustion of red carbon in the main combustion zone 10 is provided by the main combustion zone air distribution plate 9, and the air required by the precombustion chamber air distribution plate 5 and the main combustion zone air distribution plate 9 enters from the total air inlet 6 below the furnace. When the slag falling into the slag box 7 from the tail end of the inclined plane needs to be cleaned, the slag can be cleaned through the furnace door 8 arranged on the side wall of the slag box 7, and meanwhile, the furnace door 8 can also be used as an inspection manhole of a small automatic heating furnace. The hot flue gas generated by the combustion of the small automatic heating stove is discharged out of the stove through a flue gas outlet 15 after the temperature of the hot flue gas is reduced by a first heat exchange return 12, a second heat exchange return 13 and a third heat exchange return 14 above the main combustion area 10. The flue gas transmission directions in the first heat exchange return 12, the second heat exchange return 13 and the third heat exchange return 14 are opposite, so that the flue gas cooling time and the flue gas cooling stroke are increased, and the space is saved. In order to ensure the air quantity and the air pressure required by the operation of the small automatic heating furnace, an induced draft fan is arranged at the 15 position of the flue gas outlet.

Except for the air distribution plate 5 of the precombustion chamber and the part connected with the lower electric push plate 4, the furnace body of the small automatic heating furnace is coated by a heat exchange water jacket so as to reduce the temperature in the precombustion chamber 11 and ensure the safe operation of the furnace.

The utility model provides a pair of small-size automatic heating stove goes up electronic push pedal 2 and slides by first motor 201 drive, and lower electronic push pedal 4 slides by second motor 401 drive, through last electronic push pedal 2 and lower electronic push pedal 4 automatic control, guarantees that the moulded coal precombustion in 11 precombustions of precombustion chamber reduces nitrogen oxide and smoke and dust emission, improves the moulded coal burn-off rate, improves small-size automatic heating stove thermal efficiency and operating stability.

The utility model discloses utilize the technological principle that precombustes, the moulded coal of compound SOx/NOx control agent is added with burning, reform transform and just burn small-size heating stove coal feeding facility, realize that the moulded coal ignites in advance, make the moulded coal fully precombuste in precombustion chamber 11, go up electronic push pedal 2 and lower electronic push pedal 4 linkage guarantee precombustion controllable in precombustion chamber 11, it is controllable to deposit the coal volume, the moulded coal precombustion becomes red charcoal in precombustion chamber 11, the condition of burning on fire has been improved, the moulded coal combustion distance has been prolonged, the burn-out rate and the boiler combustion thermal efficiency have been improved. The utility model provides a small-size automatic heating stove, 11 in the precombustion district are as low temperature reducing zone, and main combustion zone 10 is the high temperature oxidation district, and most coal-fired volatile nitrogen all passes through the combustion process under the reducing atmosphere. The reduction of coke nitrogen of the coal bed at the lower part of the main combustion area 10 and the reburning of the reducing gas at the upper part are combined, so that the emission of nitrogen oxides and smoke dust is reduced. By optimizing the pyrolysis and combustion processes of the molded coal in the small automatic heating furnace, the generation of nitrogen oxides and smoke dust in the combustion process is inhibited by using pyrolysis coal gas and semicoke generated by coal, the emission of the nitrogen oxides and the smoke dust is reduced, and the economical and efficient operation of the furnace is realized.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A small automatic heating stove, comprising:

the furnace body is provided with a precombustion chamber (11);

the coal bunker (1) is provided with a downward opening above the furnace body;

the upper electric push plate (2) is arranged below the opening of the coal bunker (1), can push the molded coal in the coal bunker (1) into the pre-combustion chamber (11), and can isolate the coal bunker (1) from the pre-combustion chamber (11);

the push plate support (3) is fixed on the furnace body and positioned below the upper electric push plate (2), and the upper electric push plate (2) is in sliding connection with the push plate support (3);

lower electronic push pedal (4), sliding connection is in on the furnace body, be located the below that the push pedal supported (3), one side of electronic push pedal (4) is from nearly to far doing in proper order down prechamber (11), main combustion zone (10) and sediment case (7), can with red charcoal in prechamber (11) pushes into main combustion zone (10), main combustion zone (10) top is exhanst gas outlet (15).

2. The small automatic heating stove according to claim 1, characterized in that the pre-combustion chamber (11) and the main combustion area (10) are arranged on a slope of the stove body in sequence, the position of the pre-combustion chamber (11) on the stove body is higher than the main combustion area (10), the slope ends with the slag box (7), and the lower electric push plate (4) is connected on the slope in a sliding manner.

3. The small automatic heating stove according to claim 2, characterized in that a pre-combustion chamber air distribution plate (5) is arranged at the bottom of the pre-combustion chamber (11), a main combustion zone air distribution plate (9) is arranged at the bottom of the main combustion zone (10), and the pre-combustion chamber air distribution plate (5) and the main combustion zone air distribution plate (9) are both communicated with the main air inlet (6) of the stove body.

4. The small automatic heating stove according to claim 3, characterized in that the total air intake (6) is provided below the prechamber air distribution plate (5) and the main combustion zone air distribution plate (9).

5. The small automatic heating stove according to claim 2, characterized in that a baffle (16) is arranged between the pre-combustion chamber (11) and the main combustion zone (10), the top of the baffle (16) is fixed on the stove body, and the distance between the bottom of the baffle (16) and the inclined plane is not less than the height of the lower electric push plate (4).

6. The small automatic heating stove according to claim 1, wherein more than two heat exchange return strokes are provided between the main combustion area (10) and the flue gas outlet (15), the heat exchange return strokes are of a pipe type, and the flue gas transmission directions in two adjacent heat exchange return strokes are opposite.

7. The small automatic heating stove according to claim 6, characterized in that an induced draft fan is installed at the flue gas outlet (15).

8. The small automatic heating stove according to claim 1, characterized in that a manual door is installed on the upper part of the coal bunker (1).

9. The small automatic heating stove according to claim 1, characterized in that the side wall of the slag box (7) is provided with a furnace door (8).

10. The small automatic heating stove according to claim 1, wherein the stove body is covered with a heat exchange water jacket.

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