Biomass combustion boiler

Abstract

The utility model discloses a biomass combustion boiler, which relates to the technical field of agricultural machinery and comprises a boiler body, and a bag breaking chamber and a hearth are arranged in the boiler body. A plurality of horizontally-arranged branch pipes are arranged in the bag breaking chamber and arranged around straw bags, the ends of the branch pipes are fixed to a main pipe, the main pipe penetrates through the bag breaking chamber and extends outwards, the extending end of the main pipe is provided with a connector, the connector is connected with a hearth or a heat exchanger, and the heat exchanger is connected with the hearth. By means of the arrangement, the main pipe discharges smoke generated by materials in the hearth to the surfaces of straw bags through the branch pipes; smoke contains gas components such as carbon dioxide and nitrogen which do not support combustion, and when the smoke surrounds the straw bags, air (oxygen) can be isolated to a certain degree, so that combustion of the straw bags is inhibited, and the flame-retardant effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a biomass combustion boiler. Background Technology

[0002] Biomass combustion boilers, as devices that utilize biomass energy, have been widely used in industrial production and daily life. Among them, boilers using biomass such as straw as fuel have attracted much attention due to their advantages such as abundant raw material sources and low cost.

[0003] The prior art (CN111237797A) discloses a baling breaking device for a direct-fired biomass boiler burning straw bales, comprising: a baling breaking roller assembly and a water-cooling circulation system; the baling breaking roller assembly includes two baling roller main shaft tubes arranged side by side in the straw baling breaking chamber, each baling roller main shaft tube having a number of baling thorns evenly distributed on its outer ring outer wall, allowing the straw bales falling between the two baling roller main shaft tubes to be broken by the baling thorns, so that the straw can be broken and fully burned; the water-cooling circulation system can continuously circulate water to cool the two baling roller assemblies located in the high-temperature environment of the straw baling breaking chamber, thus protecting them from heat.

[0004] However, this biomass combustion boiler has many shortcomings in processing straw bales. Before entering the furnace for combustion, the straw bales need to be broken up in the bale-breaking chamber. However, since the bale-breaking chamber is located on one side of the furnace, some heat is transferred to the bale-breaking chamber during furnace operation, causing the material to burn inside the chamber. This not only reduces combustion efficiency but may also cause safety issues. Utility Model Content

[0005] The purpose of this utility model is to address the deficiencies in the existing technology by proposing a biomass combustion boiler.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A biomass combustion boiler includes a boiler body, wherein a blister pack breaking chamber and a furnace are provided within the boiler body.

[0008] The breaking chamber is equipped with several horizontally arranged branch pipes, which are located around the straw bales. The ends of the branch pipes are fixed to the main pipe, which passes through the breaking chamber and extends outward. The extended end of the main pipe is provided with a connection port, which is connected to the furnace or to a heat exchanger. The heat exchanger is connected to the furnace.

[0009] Furthermore, the packing breaking chamber is located on one side of the furnace, and a packing breaking roller is rotatably connected inside the packing breaking chamber, with the branch pipe located above the packing breaking roller.

[0010] Furthermore, the branch pipe is installed on the protective plate, the protective plate is arc-shaped and fixedly connected to the baler chamber, and the branch pipe is provided with a smoke exhaust port facing the straw bale.

[0011] Furthermore, the guard plate is provided with a support roller, which is rotatably connected to the support. The support is fixedly connected to the guard plate, and the support roller is located on one side of the branch pipe. The height of the support roller is greater than the diameter of the branch pipe.

[0012] Furthermore, a pressurization chamber is provided on the main pipe, and a pressurization fan is installed inside the pressurization chamber. The pressurization fan is used to inject high-pressure flue gas into the branch pipe.

[0013] Furthermore, a connecting flange is provided at the connection port of the main pipe. Beneficial effects

[0014] Compared to existing technologies, the advantages of this invention are as follows: the flue gas contains carbon dioxide, nitrogen, and other gases that do not support combustion. When the flue gas surrounds the straw bales, it isolates the air (oxygen) to a certain extent, thereby inhibiting the combustion of the straw bales and playing a flame-retardant role. This flame-retardant effect helps control the combustion rate of the straw bales, preventing them from burning in the bale-breaking chamber, making the bale-breaking process more stable and controllable. The heat exchanger allows the heat in the flue gas to exchange with other media, improving resource utilization efficiency and cooling the flue gas to prevent excessively high temperatures in the bale-breaking chamber. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the structure of the breaking chamber in a biomass combustion boiler.

[0017] Figure 2 This is a structural diagram of the protective plate.

[0018] Figure 3 This is a schematic diagram of the structure of a biomass combustion boiler in the prior art.

[0019] In the diagram: 1. Bagged roller; 2. Straw bale; 3. Protective plate; 4. Branch pipe; 5. Pressure chamber; 6. Main pipe; 7. Exhaust port; 8. Support roller; 9. Connection port; 10. Bagged chamber; 11. Heat exchanger; 12. Furnace. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only 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.

[0022] Reference Figures 1-2 A biomass combustion boiler includes a boiler body, which has a burr breaking chamber 10 and a furnace 12.

[0023] Several horizontally arranged branch pipes 4 are installed in the breaking chamber 10. The branch pipes 4 are arranged around the straw bales 2. The ends of the branch pipes 4 are fixed to the main pipe 6. The main pipe 6 passes through the breaking chamber 10 and extends outward. The extended end of the main pipe 6 is provided with a connection port 9. The connection port 9 is connected to the furnace 12 or to the heat exchanger 11. The heat exchanger 11 is connected to the furnace 12.

[0024] The main pipe 6 discharges the flue gas generated in the furnace 12 through the branch pipe 4 to the surface of the straw bale 2. The flue gas contains carbon dioxide, nitrogen, and other gases that do not support combustion. When the flue gas surrounds the straw bale 2, it isolates it from air (oxygen) to a certain extent, thereby inhibiting the combustion of the straw bale 2 and playing a flame-retardant role. This flame-retardant effect helps control the combustion rate of the straw bale 2, preventing it from burning in the bale-breaking chamber 10, making the bale-breaking process more stable and controllable. The heat exchanger 11 exchanges heat from the flue gas with other media, improving resource utilization efficiency and cooling the flue gas to prevent excessively high temperatures within the bale-breaking chamber 10.

[0025] In other preferred embodiments, the bale-breaking chamber is located on one side of the furnace 12, and a bale-breaking roller 1 is rotatably connected inside the chamber, with a branch pipe 4 positioned above the bale-breaking roller 1. The mechanical force of the bale-breaking roller 1 can tear and break up the straw bales 2, while the flue gas introduced through the branch pipe 4 can act on the straw in a timely manner during the bale-breaking process. Because the structure of the straw becomes looser at the moment of bale breaking, the contact area with the flue gas increases significantly, allowing the flue gas to preheat and retard the straw more quickly and thoroughly, further improving the synergistic efficiency of the bale-breaking operation and flue gas treatment.

[0026] In other preferred embodiments, the branch pipe 4 is mounted on the protective plate 3, which is arc-shaped and fixedly connected to the bale-breaking chamber 10. The branch pipe 4 has a smoke exhaust port 7 facing the straw bale 2. This design, with the branch pipe 4 mounted on the arc-shaped protective plate 3 and the smoke exhaust port 7 facing the straw bale 2, allows the smoke to be precisely directed towards the straw bale 2. The arc-shaped protective plate 3 acts as a flow guide, directing the smoke more concentratedly towards the straw bale 2, thus improving smoke exhaust efficiency.

[0027] The protective plate 3 is fixedly connected inside the bale-breaking chamber 10, providing good protection for the branch pipe 4. During the bale-breaking process, the straw bale 2 may shake or shift due to the action of the bale-breaking roller 1. The protective plate 3 can prevent the straw bale 2 from directly colliding with the branch pipe 4, avoiding damage to the branch pipe 4. In addition, the presence of the protective plate 3 can also reduce the impact of other components inside the bale-breaking chamber 10 on the branch pipe 4, ensuring that the branch pipe 4 is always in a stable working state.

[0028] Specifically, a support roller 8 is provided on the guard plate 3. The support roller 8 is rotatably connected to the support, and the support is fixedly connected to the guard plate 3. The support roller 8 is located on one side of the branch pipe 4, and the height of the support roller 8 is greater than the diameter of the branch pipe 4. The support roller 8 can protect the branch pipe 4 and prevent the straw bale 2 from hitting the branch pipe 4.

[0029] In other preferred embodiments, a pressurization chamber 5 is provided on the main pipe 6, and a pressurization fan is installed inside the pressurization chamber 5. The pressurization fan is used to inject high-pressure flue gas into the branch pipe 4. The pressurization chamber 5 on the main pipe 6, equipped with a pressurization fan, can powerfully inject high-pressure flue gas into the branch pipe 4. The flow velocity of the flue gas under high pressure in the pipe is significantly increased, enabling it to reach the branch pipe 4 and be discharged from the exhaust port 7 more quickly, thus shortening the transportation time of the flue gas from the furnace 12 to the straw bale 2.

[0030] In other preferred embodiments, a connecting flange is provided at the connection port 9 of the main pipe 6.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A biomass combustion boiler, characterized in that, The boiler body includes a flaking chamber and a furnace. The breaking chamber is equipped with several horizontally arranged branch pipes, which are located around the straw bales. The ends of the branch pipes are fixed to the main pipe, which passes through the breaking chamber and extends outward. The extended end of the main pipe is provided with a connection port, which is connected to the furnace or to a heat exchanger. The heat exchanger is connected to the furnace.

2. A biomass combustion boiler according to claim 1, characterized in that, The packing breaking chamber is located on one side of the furnace, and a packing breaking roller is rotatably connected inside the packing breaking chamber. The branch pipe is located above the packing breaking roller.

3. A biomass combustion boiler according to claim 1, characterized in that, The branch pipe is installed on the protective plate, which is arc-shaped and fixedly connected to the baler chamber. The branch pipe is provided with a smoke exhaust port, which faces the straw bale.

4. A biomass combustion boiler according to claim 3, characterized in that, The guard plate is provided with a support roller, which is rotatably connected to the support. The support is fixedly connected to the guard plate. The support roller is located on one side of the branch pipe, and the height of the support roller is greater than the diameter of the branch pipe.

5. A biomass combustion boiler according to claim 1, characterized in that, A pressurization chamber is installed on the main pipe, and a pressurization fan is installed inside the pressurization chamber. The pressurization fan is used to inject high-pressure flue gas into the branch pipe.

6. A biomass combustion boiler according to claim 1, characterized in that, A connecting flange is provided at the connection port of the main pipe.

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