Spiral pipe coil water-cooled wall type household small coal-fired heating furnace

Abstract

The utility model relates to a spiral pipe coil type water-cooled wall household small-sized coal-fired heating furnace, which comprises a furnace body, a coal storage bunker, a combustion chamber and a material receiving cavity are arranged in the furnace body, the inner wall of the furnace body is connected with a fire grate, the fire grate is positioned below the coal storage bunker and the combustion chamber and above the material receiving cavity, and the coal storage bunker and the combustion chamber are separated by a plate type secondary oxygen distribution device. The upper end face of the furnace body is provided with a feeding port, a cooking port, a chimney port and a hot water outlet, the feeding port is located at the upper end of the coal storage bunker, the cooking port is located at the upper end of the combustion chamber, spiral pipe coil type water cooling pipes are connected to the front, rear, left and right peripheries in the furnace body, and an air distribution port is connected to the outer wall of the left side of the furnace body. The rear side of the outer wall of the furnace body is provided with a cold water inlet and an anti-explosion valve, the outer wall of the right side of the furnace body is connected with a fire grate operating rod, a cooking and heating switching plate operating rod and the like, and the energy-saving and environment-friendly energy-saving stove has the advantages of being sufficient in combustion, high in heat efficiency, stable in day-night power output, low in operation frequency and low in heating cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating stoves, in particular to a spiral tube coil water-cooled wall type small household coal-fired heating stove. Background Art

[0002] Coal-fired heating stoves are widely used in winter heating of self-built houses in rural areas. However, traditional coal-fired stoves have small combustion chambers, low thermal efficiency, high operation frequency during operation, large output power difference between day and night, and are prone to environmental pollution. Therefore, we propose a spiral tube coil water-cooled wall household small coal-fired heating stove. Utility Model Content

[0003] In view of the problems existing in the above-mentioned technologies, the utility model proposes a spiral tube ring water-cooled wall type small household coal-fired heating stove, which solves the problems of traditional coal-fired stoves with small furnace chamber, insufficient coal combustion, easy to cause environmental pollution, low thermal efficiency, high operation frequency, and especially unstable thermal efficiency output during the day and night; it creates conditions for constant temperature heating of self-built houses in rural areas during the day and night.

[0004] The utility model is a spiral tube coil type water-cooled wall small household coal-fired heating stove, and its technical scheme is:

[0005] On the basis of not enlarging the furnace structure, the heat exchange area is increased; the path of the heat medium in the furnace is extended to extend the time of the heat medium in the furnace, increase the heat exchange time, increase the water temperature, and achieve the purpose of improving thermal efficiency. The utility model includes a furnace body and a chimney, the interior of the furnace body includes a combustion chamber, a coal storage bin and a material receiving cavity, the inner wall of the furnace body is connected with a grate, the grate is located between the coal storage bin and the combustion chamber and the material receiving cavity, the combustion chamber is connected with secondary oxygen distribution device I, secondary oxygen distribution device II and secondary oxygen distribution device III, a fire baffle, and a cooking and heating switching plate. Secondary oxygen distribution device I, secondary oxygen distribution device II and secondary oxygen distribution device III are all provided with air distribution port I, air distribution port II and air distribution port III through the outer wall of the furnace body. The upper end surface of the furnace body is provided with a feeding port, a cooking port, a chimney port and a hot water outlet. The feeding port is located at the upper end of the coal storage bin, and the cooking port is located at the upper end of the combustion chamber. The furnace body is connected with spiral tube ring type water cooling pipes all around, and the outer wall of the spiral tube ring type water cooling pipe is coated with refractory clay. The spiral tube ring type water cooling pipe runs through the outer wall of the furnace body to connect the hot water outlet and the cold water inlet. The hot water outlet of the outer wall of the furnace body is connected to the spiral tube ring type water cooling pipe inside the chimney through a pipeline, and the spiral tube ring type water cooling pipe inside the chimney is connected to the heat dissipation device, the fire baffle is located at the lower part of the chimney port, the cooking and heating switching baffle is located at the upper end of the combustion chamber, and a secondary oxygen distribution device I is provided between the feeding port and the combustion chamber; the secondary oxygen distribution device II is installed at the cooking fire outlet just above the combustion chamber; the secondary oxygen distribution device III is installed below the chimney port just behind the combustion chamber.

[0006] Furthermore, the left side of the outer wall of the furnace body is connected with air distribution port I, air distribution port II, and air distribution port III.

[0007] Furthermore, a flame guide assembly is connected to the inside of the combustion chamber, and the flame guide assembly includes a fire baffle, a cooking and heating switching baffle and a secondary oxygen distribution device III. The fire baffle is connected to the furnace body, the cooking and heating switching baffle passes through the furnace body, an external switching operating lever is provided, and the secondary oxygen distribution devices all pass through the furnace body, and an external air outlet is provided.

[0008] Furthermore, a material receiving hopper is provided in the material receiving chamber.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] 1. The utility model effectively realizes the effect of sufficient heat absorption and sufficient combustion of coal by setting a spiral tube ring water-cooled wall and a secondary oxygen distribution device, and treats the generated part of the flue gas and residual ash with multi-stage oxygen distribution combustion, reduces the air pollution caused by the discharged flue gas, greatly improves the utilization rate of coal, saves coal resources, realizes balanced output efficiency, and basically achieves constant temperature output at all times.

[0011] 2. The utility model further increases the heat exchange area and prolongs the heat exchange time by arranging the spiral water-cooling pipe in the chimney, thus creating conditions for increasing the water temperature and thus improving the thermal efficiency.

[0012] 3. The utility model creates conditions for achieving full combustion of coal by setting up a multi-stage secondary oxygen distribution device, thereby improving thermal efficiency and achieving the purpose of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram provided by an embodiment of the utility model;

[0015] Figure 3 It is a schematic diagram of a secondary oxygen distribution device III provided in an embodiment of the utility model;

[0016] Figure 4 Schematic diagram of a secondary oxygen distribution device II provided in an embodiment of the utility model;

[0017] Figure 5 It is a schematic diagram of a secondary oxygen distribution device I provided in an embodiment of the utility model;

[0018] Figure 6 This is a partial cross-sectional view of the fire viewing port of the utility model;

[0019] Figure 7This is a rear view of the furnace body of the utility model;

[0020] Figure 8 This is the right side view of the furnace body of the utility model;

[0021] Fig. 9 This is a left view of the furnace body of the utility model;

[0022] In the figure: 1 furnace body, 2 coal storage bin, 3 combustion chamber, 4 chimney, 5 fire viewing hole, 6 charging port, 7 secondary oxygen distribution device I, 8 secondary oxygen distribution device II, 9 grate, 10 material receiving chamber, 11 fire baffle, 12 cooking and heating switching baffle, 13 hot water outlet, 14 cold water inlet, 15 spiral water cooling pipe, 16 secondary oxygen distribution device III, 17 cooking port, 18 air distribution port I, 19 explosion-proof valve, 20 air distribution port II, 21 air distribution port III, 22 fireproof glass, 23 cooking and heating switching plate operating lever, 24 grate operating lever. DETAILED DESCRIPTION

[0023] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0024] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, the novel spiral tube coil water-cooled wall type small household coal-fired heating stove comprises a furnace body 1, wherein the furnace body 1 comprises a combustion chamber 3, a coal storage bin 2 and a material receiving chamber 10, and the inner wall of the furnace body 1 is connected with a grate 9, which is located between the coal storage bin 2, the combustion chamber 3 and the material receiving chamber 10 and is used for removing combustion waste. The combustion chamber 3 is internally connected with a secondary oxygen distribution device, namely, a secondary oxygen distribution device I 7, a secondary oxygen distribution device II 8 and a secondary oxygen distribution device III 16, which are used to distribute oxygen at different positions in the combustion chamber to achieve the purpose of full combustion.

[0026] A secondary oxygen distribution device I 7 is provided between the coal storage bin 2 and the combustion chamber 3, and its structure is a plate wall ventilation structure; the secondary oxygen distribution device II 8 is installed at the cooking fire outlet just above the combustion chamber, and its structure is a cylindrical ventilation structure; the secondary oxygen distribution device III 16 is installed below the chimney outlet just behind the combustion chamber, and its structure is a cylindrical ventilation structure; the three secondary oxygen distribution devices are all provided with air distribution ports I 18, II 20, and III 21 through the outer wall of the furnace body, which are used to control the air volume required for each part.

[0027] The upper end surface of the furnace body 1 is provided with a feeding port 6, a cooking port 17, a chimney port 22 and a hot water outlet 13. The cooking port 17 is located directly above the combustion chamber 3. The furnace body 1 is connected with a spiral water-cooling pipe 15 around it. The spiral water-cooling pipe 15 in the furnace body penetrates the outer wall of the furnace body 1 and is connected to the hot water outlet 13. The hot water outlet 3 is connected to the spiral water-cooling pipe 15 inside the chimney through a pipeline. The spiral water-cooling pipe 15 in the chimney is connected to a heat dissipation device through a pipeline to achieve hot water output. For example, the heat dissipation device is a radiator or floor heating. The chimney is also provided with a fire viewing hole 5 (a fireproof glass 22 is also provided at the fire viewing hole), which is used to observe the smoke content in the chimney, so as to adjust the size of each air distribution port, control the air intake, and achieve the purpose of full combustion. The cold water outlet 14 is connected to the heat dissipation system through a pipeline, and is used for the cold water after heating to enter the furnace body for reheating. The explosion-proof valve 19 protects the furnace body from excessive pressure under abnormal conditions. The fire baffle 11 is located at the lower part of the chimney and connected to the furnace body 1. The grate operating rod 24 is installed on the right side of the furnace body and connected to the grate for burning waste removal; the cooking and heating switching plate operating rod 25 runs through the furnace body and is installed on the right side of the furnace body for switching between cooking and heating modes; the outer wall of the spiral tube ring type water cooling pipe 15 in the furnace body 1 is coated with refractory clay, which is used to separate the coal from the water cooling pipe, increase the furnace temperature, and reduce the corrosion of the coal to the water cooling pipe.

[0028] Working principle:

[0029] During operation, coal is put into the coal storage bin 2 and the combustion chamber 3. After the ignition is ignited, air will enter the combustion chamber 3 through the bottom grate and mix with the coal for combustion. When the coal in the combustion chamber 3 is burning, the coal in the coal storage bin slowly enters the combustion chamber. The incompletely burned mixture will be mixed with the air introduced into the combustion chamber 3 through the secondary oxygen distribution baffle 7 for secondary combustion, so that the combustion is further improved. The unburned mixture will be mixed with the air entering the combustion chamber through the secondary oxygen distribution device 16 set under the chimney mouth and burned again, so that the combustion is more complete, the emission of pollutants is more effectively prevented, the coal combustion efficiency is improved, and the combustion is fully completed. The setting of the spiral tube coil type water cooling pipe 15 can not only effectively increase the heat exchange area, but also prolong the heat exchange time of water in the furnace body, increase the water temperature (compared with the existing plate type water-cooled wall heating furnace, under the same volume and the same fuel, the longer the heat medium stays in the furnace body, the more heat is absorbed, and the higher the temperature), improve the thermal efficiency, and achieve the purpose of energy saving and emission reduction. By switching the baffle position for cooking and heating, the cooking port 3 can be used for household use, thereby improving the practicality of the stove and reducing the combustion consumption rate of coal. In the heating process, the spiral tube ring type water cooling tube 15 in the stove body can be used to absorb heat inside the stove body 1, thereby increasing the service life of the stove body 1. The set material receiving chamber 10 facilitates the collection of ash formed after coal combustion.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spiral tube coil water-cooled wall type small household coal-fired heating furnace, comprising a furnace body (1), characterized in that: The furnace body (1) comprises a coal storage bin (2), a combustion chamber (3) and a material receiving chamber (10). The inner wall of the furnace body (1) is connected to a grate (9), the grate (9) separates the coal storage bin (2) and the combustion chamber (3) from the material receiving chamber (10). The grate (9) passes through the outer side of the furnace body and is provided with an operating rod. A plate-type secondary oxygen distribution device (7) is connected between the coal storage bin (2) and the combustion chamber (3) to separate the coal storage bin (2) and the combustion chamber (3). The combustion chamber (3) is internally connected to a secondary oxygen distribution device I (7), a secondary oxygen distribution device II (8) and a secondary oxygen distribution device III (16), a fire baffle (11) and a cooking and heating switching plate (12). The upper end of the furnace body (1) is The furnace body (1) is provided with a charging port (6), a cooking port (17), a chimney port and a hot water outlet (13), wherein the charging port (6) is located directly above the coal storage bin (2), and the cooking port (17) is located directly above the combustion chamber (3). The furnace body (1) is connected with spiral water cooling pipes (15) on all sides, and the spiral water cooling pipes (15) penetrate the outer wall of the furnace body (1). The rear side of the outer wall of the furnace body (1) is connected with a cold water inlet (14) and an explosion-proof valve (19). The left outer wall of the furnace body (1) is provided with air distribution ports I (18), air distribution ports 11 (20), and air distribution ports III (21). The right side of the furnace body is provided with a grate operating rod (24) and, and the outer wall of the spiral water cooling pipe (15) in the furnace body (1) is coated with refractory clay.

2. A spiral tube coil water-cooled wall type small household coal-fired heating stove as claimed in claim 1, characterized in that: The combustion chamber is connected to a fire baffle (11) and a cooking and heating switching baffle (12) to achieve switching between cooking and heating modes.

3. A spiral tube coil water-cooled wall type small household coal-fired heating stove as claimed in claim 1, characterized in that: The secondary oxygen distribution device I (7) in the combustion chamber passes through the outside of the furnace wall (1) and is connected to the air distribution port I (18), the secondary oxygen distribution device II (8) passes through the outside of the furnace wall (1) and is connected to the air distribution port 11 (20), and the secondary oxygen distribution device III (16) passes through the outside of the furnace wall (1) and is connected to the air distribution port III (21), and is used to control the air volume required at different positions in the combustion chamber. The secondary oxygen distribution device I (7), the secondary oxygen distribution device II (8) and the secondary oxygen distribution device III (16) are arranged at different positions to achieve multi-stage oxygen distribution.

4. A spiral tube coil water-cooled wall type small household coal-fired heating stove as claimed in claim 1, characterized in that: A spiral water cooling pipe (15) is provided in the furnace body, and its inlet and outlet penetrate the outer wall of the furnace body to improve the thermal efficiency and protect the outer wall of the furnace body (1). The outer wall of the spiral water cooling pipe is coated with refractory clay to protect the spiral water cooling pipe and increase the furnace fire temperature.

5. A spiral tube coil water-cooled wall type small household coal-fired heating stove as claimed in claim 1, characterized in that: The chimney is provided with a spiral tube coil type water cooling wall (15) inside, which is arranged in a spiral along the length direction of the chimney inner wall, thereby effectively improving the thermal efficiency.

6. A spiral tube coil water-cooled wall type small household coal-fired heating stove as claimed in claim 1, characterized in that: A material receiving hopper is provided in the material receiving chamber (10) to facilitate the cleaning of waste materials.

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