Biomass stove flue gas purification device

Abstract

The utility model discloses a biomass stove flue gas purification device relates to the technical field of stove auxiliary optimization, the utility model discloses a box body, one end of cavity constructs the air inlet, the dust removal chamber and equipment chamber are sequentially constructed with along the airflow direction in the box body, the dust removal chamber with the equipment chamber is kept apart through the inosculation board of insulation, the inner wall of dust removal chamber is covered with insulating layer, the inosculation board constructs the variable -diameter communicating pipe, and the variable -diameter communicating pipe is along the airflow wind direction and is set up to the reduced diameter, install the electric sheet dust removal mechanism in the dust removal chamber, and the electric sheet dust removal mechanism constructs a plurality of electric sheets of electrification, and the adjacent two electric sheets are as the air passage, to solve the flue gas of biomass stove production, the problem that a large number of particles are easy to carry and scatter in the air.

Description

Technical Field

[0001] This utility model relates to the field of furnace auxiliary optimization technology, specifically, a biomass furnace flue gas purification device. Background Technology

[0002] Biomass fuels, as an important component of renewable energy, are widely used globally due to their carbon-neutral characteristics. However, incomplete combustion is a common problem with biomass fuels (such as straw, wood chips, and firewood) in small-scale combustion devices. The concentration of PM2.5 and PM10 in their flue gas can reach 200-500 mg / m³, which is 3-5 times higher than that of traditional coal-fired boilers. This high concentration of smoke and dust not only causes air pollution but also poses a direct threat to the respiratory health of operators due to the presence of toxic substances such as polycyclic aromatic hydrocarbons.

[0003] Especially when using stoves in small spaces, biomass fuel is severely limited as a burner fuel. Utility Model Content

[0004] The purpose of this invention is to provide a biomass stove flue gas purification device to solve the problem that the flue gas generated by biomass stoves easily carries a large number of particles that are dispersed in the air.

[0005] To solve the above problems, the present invention adopts the following technical means: A biomass furnace flue gas purification device includes a housing, one end of which is provided with an air inlet, and a dust removal chamber and an equipment chamber are sequentially arranged inside the housing along the airflow direction. The dust removal chamber and the equipment chamber are separated by an insulating connecting plate. The inner wall of the dust removal chamber is covered with an insulating layer. A variable diameter connecting pipe is constructed on the connecting plate, and the variable diameter connecting pipe is set to narrow along the airflow direction. An electrostatic precipitator is installed inside the dust removal chamber. The electrostatic precipitator is constructed with several energized electrostatic sheets, and the space between two adjacent electrostatic sheets serves as an air passage. An exhaust fan is installed inside the equipment cavity. The air inlet of the exhaust fan is connected to the variable diameter connecting pipe, and the air outlet of the exhaust fan is connected to the outside through an exhaust port located on the top surface of the housing. The exhaust port is covered with a filter screen.

[0006] Preferably, the electrostatic precipitator includes a pair of first positioning metal plates and a pair of second positioning metal plates suspended on both sides. The first positioning metal plates and the second positioning metal plates are connected by conductive columns, and the conductive columns are fixedly installed on the side wall of the dust removal chamber. The second positioning metal plate is disposed on the side of the first positioning metal plate facing away from the inner wall of the dust removal chamber. A first metal plate and a second metal plate are arranged between the two second positioning metal plates. The first metal plate and the second metal plate are arranged alternately. The space between the first metal plate and the second metal plate serves as the air passage. The first metal plate and the second positioning plate are connected by a first metal column. The two first metal plates are connected by a second metal column. The second metal plate and the first positioning plate are connected by a third metal column. The two second metal plates are connected by a fourth metal column.

[0007] Furthermore, the second positioning metal plate has a first through hole, the first metal plate has a second through hole, the third metal post passes through the first through hole and the second through hole in sequence, and the fourth metal post passes through the second through hole to connect the two second metal plates. The inner diameter of the first through hole and the second through hole is larger than the outer diameter of the third metal post and the fourth metal post. A first additional cavity is formed between the first through hole and the third metal post, and between the second through hole and the fourth metal post.

[0008] Furthermore, a third through hole is formed on the second metal plate, and the second metal post passes through the second through hole to connect the two first metal plates. The inner diameter of the third through hole is larger than the outer diameter of the second metal post, and a second additional cavity is formed between the third through hole and the second metal post.

[0009] Furthermore, the length of the first metal plate along the airflow direction is greater than the length of the second metal plate along the airflow direction, and the upstream ends of the first metal plate and the second metal plate are flush with each other.

[0010] Furthermore, the inner wall of the equipment cavity is covered with sound-insulating cotton.

[0011] Furthermore, the air inlet is connected to the water tank filtration device, and the flue gas enters the housing through the air inlet after passing through the water tank filtration device.

[0012] This utility model has the following beneficial effects during use: The air inlet is connected to the flue gas outlet of the biomass stove. The exhaust fan is turned on, and the galvanized dust collector is energized to create an electric field. Under the action of the exhaust fan, flue gas containing a large number of particles is drawn into the dust collection chamber. As the flue gas passes through the dust collection channel, the particles are removed by the electric field created by the galvanized dust collector, causing them to adhere to the galvanized plates under electrostatic attraction. The particulate-free flue gas is then discharged through a filter. An odor filter can be placed on the filter to remove odors. Thus, the combined effect of the electric field created by the filter and the galvanized dust collector effectively purifies the biomass flue gas containing a large number of particles. This allows biomass fuel to be used even in small spaces. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 A schematic diagram of the explosion structure.

[0015] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure.

[0016] Figure 4 for Figure 2 A side view structural diagram.

[0017] Figure 5 This is a front view structural diagram of the electrostatic precipitator of this utility model.

[0018] Figure 6 This is a schematic diagram of the structure of an embodiment of the present invention with an added water tank filtration device.

[0019] Among them, 1-box body, 2-air inlet, 3-dust removal chamber, 4-equipment chamber, 5-connecting plate, 6-variable diameter connecting pipe, 7-electric sheet dust removal mechanism, 8-air passage, 9-exhaust port, 10-first positioning metal plate, 11-second positioning metal plate, 12-conductive column, 13-first metal plate, 14-second metal plate, 15-first metal column, 16-second metal column, 17-third metal column, 18-fourth metal column, 19-first through hole, 20-second through hole, 21-third through hole, 22-water tank filter device. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please refer to Figures 1 to 6As shown, a biomass furnace flue gas purification device includes a housing 1, an air inlet 2 at one end of the housing 1, and a dust removal chamber 3 and an equipment chamber 4 arranged sequentially along the airflow direction inside the housing 1. The dust removal chamber 3 and the equipment chamber 4 are separated by an insulating connecting plate 5. The inner wall of the dust removal chamber 3 is covered with an insulating layer. A variable diameter connecting pipe 6 is constructed on the connecting plate 5. The variable diameter connecting pipe 6 is set to narrow along the airflow direction. The dust removal chamber 3 is equipped with an electric sheet dust removal mechanism 7, which is constructed with a plurality of energized electric sheets, and the space between two adjacent electric sheets serves as an air passage 8. An exhaust fan is installed inside the equipment cavity 4. The air inlet of the exhaust fan is connected to the variable diameter connecting pipe 6. The air outlet of the exhaust fan is connected to the outside through the exhaust port 9 located on the top surface of the housing 1. The exhaust port 9 is covered with a filter screen.

[0027] This design establishes a spatial connection between the air inlet 2 and the flue gas from the biomass stove. The exhaust fan is activated, and the shim dust removal mechanism is energized to create an electric field. Under the action of the exhaust fan, flue gas containing a large number of particles is drawn into the dust removal chamber 3. As the flue gas passes through the exhaust channel, the particles are removed by the electric field generated by the shim dust removal mechanism 7, causing the particles to adhere to the shims under electrostatic attraction. The particulate-free flue gas is then discharged through a filter screen. Odor filters can be installed on the filter screen to remove odors. Thus, the combined effect of the filter screen and the electric field created by the shim dust removal mechanism 7 effectively purifies the biomass flue gas containing a large number of particles. This allows biomass fuel to be used even in small spaces.

[0028] Specifically, the electrostatic precipitator 7 includes a pair of first positioning metal plates 10 and a pair of second positioning metal plates 11 suspended on both sides. The first positioning metal plates 10 and the second positioning metal plates 11 are connected by conductive posts 12, and the conductive posts 12 are fixedly installed on the side wall of the dust removal chamber 3. The second positioning metal plate 11 is disposed on the side of the first positioning metal plate 10 facing away from the inner wall of the dust removal chamber 3. A first metal plate 13 and a second metal plate 14 are arranged between the two second positioning metal plates 11. The first metal plate 13 and the second metal plate 14 are arranged alternately. The space between the first metal plate 13 and the second metal plate 14 serves as the air passage 8. The first metal plate 13 and the second positioning plate are connected by a first metal post 15. The two first metal plates 13 are connected by a second metal post 16. The second metal plate 14 and the first positioning plate are connected by a third metal post 17. The two second metal plates 14 are connected by a fourth metal post 18.

[0029] In this way, by connecting the conductive post 12 to an external power source, an electric field is formed as a whole in the electrostatic precipitator 7.

[0030] Furthermore, the second positioning metal plate 11 has a first through hole 19, the first metal plate 13 has a second through hole 20, the third metal post 17 passes through the first through hole 19 and the second through hole 20 in sequence, and the fourth metal post 18 passes through the second through hole to connect the two second metal plates 14. The inner diameter of the first through hole 19 and the second through hole 20 is larger than the outer diameter of the third metal post 17 and the fourth metal post 18. A first additional cavity is formed between the first through hole 19 and the third metal post 17, and between the second through hole 20 and the fourth metal post 18.

[0031] Furthermore, a third through hole 21 is formed on the second metal plate 14, and the second metal post 16 passes through the second through hole 20 to connect the two first metal plates 13. The inner diameter of the third through hole 21 is larger than the outer diameter of the second metal post 16, and a second additional cavity is formed between the third through hole 21 and the second metal post 16.

[0032] In this way, by utilizing the first and second additional cavities, the area where the flue gas can be subjected to the electric field during the exhaust process is increased. Thus, in addition to the planar portions of the first metal plate 13 and the second metal plate 14 being used to adsorb particles, the inner walls of the first and second additional cavities can also serve as adsorbents, thereby improving the dust removal efficiency.

[0033] Furthermore, the length of the first metal plate 13 along the airflow direction is greater than the length of the second metal plate 14 along the airflow direction, and the upstream ends of the first metal plate 13 and the second metal plate 14 are flush with each other.

[0034] In this way, as the flue gas passes through the electric field, an electric field with varying width is formed at the tail ends of the first metal plate 13 and the second metal plate 14. The width variation between the first metal plate 13 and the second metal plate 14 at the head end is reflected in the distance between the first metal plate 13 and the second metal plate 14. Thus, by increasing the distance at the end of the dust removal process, normal airflow is ensured.

[0035] Furthermore, the inner wall of the device cavity 4 is covered with sound-insulating cotton.

[0036] Furthermore, the air inlet 2 is connected to the water tank filter device 22, and the flue gas enters the housing 1 through the air inlet 2 via the water tank filter device 22.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A biomass stove flue gas purification device, characterized in that, Includes a housing (1), one end of which is provided with an air inlet (2). Inside the housing (1), a dust removal chamber (3) and an equipment chamber (4) are arranged sequentially along the airflow direction. The dust removal chamber (3) and the equipment chamber (4) are separated by an insulating connecting plate (5). The inner wall of the dust removal chamber (3) is covered with an insulating layer. A variable diameter connecting pipe (6) is arranged on the connecting plate (5). The variable diameter connecting pipe (6) is arranged with a reduced diameter along the airflow direction. The dust removal chamber (3) is equipped with an electric sheet dust removal mechanism (7), which is constructed with a number of electrically energized electric sheets, and the space between two adjacent electric sheets serves as an air passage (8). An exhaust fan is installed inside the equipment cavity (4). The air inlet of the exhaust fan is connected to the variable diameter connecting pipe (6). The air outlet of the exhaust fan is connected to the outside through the exhaust port (9) on the top surface of the box (1). The exhaust port (9) is covered with a filter screen. The electrostatic precipitator (7) includes a pair of first positioning metal plates (10) and a pair of second positioning metal plates (11) suspended on both sides. The first positioning metal plates (10) and the second positioning metal plates (11) are connected by conductive columns (12). The conductive columns (12) are fixedly installed on the side wall of the dust removal chamber (3). The second positioning metal plate (11) is located on the side of the first positioning metal plate (10) facing away from the inner wall of the dust removal chamber (3). A first metal plate (13) and a second metal plate (14) are arranged between the two second positioning metal plates (11). The first metal plate (13) and the second metal plate (14) are arranged alternately. The first metal plate (13) and the second metal plate (14) serve as the air passage (8). The first metal plate (13) and the second positioning metal plate (11) are connected by a first metal column (15). The two first metal plates (13) are connected by a second metal column (16). The second metal plate (14) and the first positioning metal plate (10) are connected by a third metal column (17). The two second metal plates (14) are connected by a fourth metal column (18).

2. The biomass stove flue gas purification device according to claim 1, characterized in that, The second positioning metal plate (11) has a first through hole (19), and the first metal plate (13) has a second through hole (20). The third metal post (17) passes through the first through hole (19) and the second through hole (20) in sequence. The fourth metal post (18) passes through the second through hole (20) to connect the two second metal plates (14). The inner diameter of the first through hole (19) and the second through hole (20) is greater than the outer diameter of the third metal post (17) and the fourth metal post (18). A first additional cavity is formed between the first through hole (19) and the third metal post (17), and between the second through hole (20) and the fourth metal post (18).

3. The biomass stove flue gas purification device according to claim 2, characterized in that, The second metal plate (14) has a third through hole (21), and the second metal pillar (16) passes through the second through hole (20) to connect the two first metal plates (13). The inner diameter of the third through hole (21) is larger than the outer diameter of the second metal pillar (16), and a second additional cavity is formed between the third through hole (21) and the second metal pillar (16).

4. The biomass stove flue gas purification device according to claim 1, characterized in that, The length of the first metal plate (13) along the airflow direction is greater than the length of the second metal plate (14) along the airflow direction, and the upstream ends of the first metal plate (13) and the second metal plate (14) are flush.

5. The biomass stove flue gas purification device according to claim 1, characterized in that, The inner wall of the equipment cavity (4) is covered with sound insulation cotton.

6. The biomass stove flue gas purification device according to claim 1, characterized in that, The air inlet (2) is connected to the water tank filter device (22), and the flue gas enters the box body (1) through the air inlet (2) via the water tank filter device (22).

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