Biomass low-carbon energy-saving boiler

Abstract

The utility model discloses a biomass low-carbon energy-saving boiler and aims to solve the problem that fuel possibly needs to be dried in rainy seasons. The drying cavity, the combustion cavity and the waste heat recovery cavity are sequentially arranged in the furnace body, a medium in the first heating pipe is heated through heat energy generated by combustion of fuel, the temperature in the drying cavity can be increased through residual waste heat, then raw materials are dried, ash powder generated after combustion of the fuel enters the waste heat recovery cavity, and the waste heat is recycled. And heat energy generated in the ash content can heat a medium in the heating pipe II, so that the boiler can dry the fuel, can utilize the heat energy in the ash content, can automatically discharge ash, reduces energy loss, and improves the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of boilers, and more specifically, to a biomass low-carbon energy-saving boiler. Background Technology

[0002] A biomass low-carbon energy-saving boiler is a high-efficiency boiler system specifically designed to burn biomass fuels (such as wood chips, straw, rice husks, bagasse, and other agricultural and forestry waste). Biomass boilers convert the chemical energy in biomass into heat energy through combustion, which is used to heat water or other media.

[0003] Biomass fuels can become damp during transportation or storage. Biomass fuels with high moisture content need to have the moisture evaporated before combustion, which consumes a significant amount of heat energy, reducing the effective energy available for heating or steam generation. High humidity can also prevent the fuel from reaching the ideal combustion temperature, leading to incomplete combustion, increased emissions of unburned carbon (carbon black), and reduced overall combustion efficiency. Therefore, damp biomass fuels need to be dried before use. In good weather, sun drying is possible, but during the rainy season, when sun drying is inconvenient and air humidity is high, drying equipment is required. This results in additional energy expenditure, increasing the company's energy consumption, and the extra drying process also reduces production efficiency to some extent.

[0004] Based on the above, the purpose of this utility model is to provide a biomass low-carbon energy-saving boiler to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a biomass low-carbon energy-saving boiler. This utility model arranges a drying chamber and a combustion chamber sequentially inside the boiler body. The heat energy generated by fuel combustion heats the medium inside the heating tube, and the remaining waste heat increases the temperature inside the drying chamber, thereby drying the raw materials, reducing energy consumption and improving production efficiency.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a biomass low-carbon energy-saving boiler, including a furnace body, wherein a feed inlet and a discharge outlet are provided on the furnace body, and the furnace body is divided into a drying chamber and a combustion chamber from top to bottom. A rotating shaft is rotatably connected inside the furnace body, passing through the drying chamber and the combustion chamber. A driving mechanism for driving the rotating shaft to rotate is provided on the furnace body. A pusher plate one and a pusher plate two are respectively provided on the rotating shaft in the drying chamber and the combustion chamber. A feeding trough one is provided between the drying chamber and the combustion chamber, which is offset from the feed inlet. A feeding trough two is provided between the combustion chamber and the discharge outlet. An igniter, an exhaust trough and several heating tubes one are provided in the combustion chamber. An annular section is provided on the heating tube one.

[0007] By adopting the above technical solution, when using the boiler, the two ends of multiple heating tubes are connected to external water supply and storage devices, and biomass fuel is poured into the drying chamber through the feed inlet. During this process, the drive mechanism drives the rotating shaft to rotate slowly, which in turn drives pusher plate one and pusher plate two to rotate. The biomass fuel entering the drying chamber will accumulate between the multiple pusher plates one. As the pusher plates one move, they will gradually push the fuel into the feed trough one until the fuel falls into the combustion chamber through the feed trough. The fuel is then pushed by pusher plate two. The first pusher moves to the bottom of the igniter, which ignites the fuel. The heat generated by the combustion heats the medium in the heating tube one, and the remaining heat gradually raises the temperature inside the drying chamber, thereby drying the raw materials inside the drying chamber. The generated flue gas is discharged through the exhaust trough (the user can connect the exhaust trough to other heat recovery devices to recover and utilize the residual heat in the exhaust gas, or connect it to a filter device to filter the exhaust gas). The pusher plate two pushes the burning fuel to move until it is fully burned and then discharged through the feeding trough two and the discharge port.

[0008] The present invention is further configured such that: a pad is rotatably connected to the push plate 2, and the size of the feed trough 2 is sufficient for the pad to be flipped downward and inserted into it.

[0009] The present invention is further configured such that the diameter of the annular segment of the plurality of heating tubes gradually increases from top to bottom.

[0010] The present invention is further configured such that a guide plate is provided at the lower end of the feeding trough to avoid the heating tube.

[0011] The present invention is further configured such that: the lower end of the furnace body is also divided into a waste heat recovery chamber, the waste heat recovery chamber is connected to the combustion chamber through the feeding trough 2, a number of heating tubes 2 are arranged in the waste heat recovery chamber, and a number of push plates 3 are arranged in the part of the rotating shaft located in the waste heat recovery chamber.

[0012] The present invention is further configured such that: a valve is provided at the discharge port, and a baffle is provided between the push plate three and the discharge trough two.

[0013] The present invention is further configured such that: the driving mechanism includes a motor fixedly connected to the furnace body, and the output shaft of the motor is fixedly connected to the rotating shaft.

[0014] In summary, this utility model has the following beneficial effects:

[0015] This invention features a drying chamber, a combustion chamber, and a waste heat recovery chamber arranged sequentially within the furnace body. The heat generated by fuel combustion heats the medium inside the first heating tube, while the remaining waste heat raises the temperature inside the drying chamber, thus drying the raw materials. The ash powder from fuel combustion enters the waste heat recovery chamber, where the heat energy retained in the ash can heat the medium inside the second heating tube. With this configuration, the boiler can dry the raw materials, utilize the heat energy in the ash, and automatically discharge ash, reducing energy loss and improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model patent. Figure 1 This shows the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model patent. Figure 2 This shows the overall structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model patent. Figure 3 The structure of the drying chamber is shown;

[0019] Figure 4 This is a schematic diagram of the structure of this utility model patent. Figure 4 This shows the structure of the combustion chamber;

[0020] Figure 5 This is a schematic diagram of the structure of this utility model patent. Figure 5 The structure of the waste heat recovery chamber is shown.

[0021] Figure 6 This is a schematic diagram of the structure of this utility model patent. Figure 6 This shows the structure of the heating element.

[0022] In the diagram: 1. Furnace body; 2. Feed inlet; 3. Discharge outlet; 4. Drying chamber; 5. Combustion chamber; 6. Rotating shaft; 7. Pusher plate one; 8. Pusher plate two; 9. Feed trough one; 10. Feed trough two; 11. Ignition device; 12. Exhaust trough; 13. Heating tube one; 14. Annular section; 15. Pad plate; 16. Guide plate; 17. Waste heat recovery chamber; 18. Heating tube two; 19. Pusher plate three; 20. Valve; 21. Baffle; 22. Motor. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", 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.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "provided with," "set up / connected," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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] The present invention will now be described in detail with reference to the accompanying drawings.

[0027] A biomass low-carbon energy-saving boiler, such as Figures 1-6 As shown, the furnace includes a furnace body 1, with a feed inlet 2 and a discharge outlet 3. The furnace body 1 is divided into a drying chamber 4 and a combustion chamber 5 from top to bottom. A rotating shaft 6 is rotatably connected inside the furnace body 1, passing through the drying chamber 4 and the combustion chamber 5. A drive mechanism is provided on the furnace body 1 to drive the rotating shaft 6 to rotate. Push plate 7 and push plate 8 are fixedly connected to the rotating shaft 6 in the drying chamber 4 and the combustion chamber 5, respectively. A feeding trough 9 is provided between the drying chamber 4 and the combustion chamber 5, which is offset from the feed inlet 2. A feeding trough 10 is provided between the combustion chamber 5 and the discharge outlet 3. An igniter 11 and several heating tubes 13 are installed in the combustion chamber 5, and an exhaust trough 12 is provided. An annular section 14 is provided on the heating tubes 13.

[0028] Furthermore, the lower end of the push plate 2 8 is rotatably connected to a pad 15. The lower end surface of the pad is rotatably equipped with several universal balls or rollers to reduce friction. The area of ​​the feeding groove 2 10 is larger than that of the pad and is sufficient for the pad 15 to be flipped downward and inserted into it.

[0029] Furthermore, the diameter of the annular segment 14 of the multiple heating tubes 13 gradually increases from top to bottom.

[0030] Furthermore, the lower end of the feeding trough 9 is provided with a guide plate 16 to avoid the heating pipe 13.

[0031] Furthermore, the lower end of the furnace body 1 is also divided into a waste heat recovery chamber 17. The waste heat recovery chamber 17 is connected to the combustion chamber 5 through the feeding trough 10. Several heating tubes 18 are installed in the waste heat recovery chamber 17. Several push plates 19 are fixedly connected to the part of the rotating shaft 6 located in the waste heat recovery chamber 17.

[0032] Furthermore, a valve 20 is installed at the discharge port 3, and a baffle 21 fixedly connected to the furnace body is provided between the push plate 3 19 and the discharge trough 2 10.

[0033] Furthermore, the drive mechanism includes a motor 22 fixedly connected to the furnace body 1, and the output shaft of the motor 22 is fixedly connected to the rotating shaft 6.

[0034] Working principle: When using the boiler, the two ends of multiple heating tubes 13 and 18 are connected to external water supply and storage devices, respectively. Biomass fuel is then poured into the drying chamber 4 through the feed inlet 2. During this process, the rotating shaft 6 is driven by the motor 22 to rotate slowly. The rotating shaft 6 will drive the pusher plate 7, pusher plate 8 and pusher plate 19 to rotate. The biomass fuel entering the drying chamber 4 will accumulate between the multiple pusher plates 7. As the pusher plates 7 move, they will gradually push the fuel into the feed trough 9 until the fuel falls into the pad plate 15 in the combustion chamber 5 through the feed trough 9.

[0035] The fuel, under the action of pusher plate 28 and pad plate 15, first moves to the area below igniter 11. Igniter 11 ignites the fuel, and the heat generated by combustion heats the medium in heating tube 13. The remaining heat gradually raises the temperature inside drying chamber 4, thereby drying the raw materials inside. The generated flue gas is discharged through exhaust chute 12 (the user can connect exhaust chute 12 to other heat recovery devices to recover and utilize the residual heat in the exhaust gas, or connect it to a filter device to filter the exhaust gas). Pusher plate 28 and pad plate 15 drive the combustion... The fuel moves until the pad 15 moves to the position of the second feeding trough 10 and flips downward, so that the ash powder after complete combustion falls into the waste heat recovery chamber through the second feeding trough 10. It should be mentioned that the user can set the rotation speed of the output shaft of the motor 22 according to the combustion time of the fuel, so that the time between the fuel combustion and falling into the waste heat recovery chamber can be fully burned. It can be further improved by installing induction heads on the rotating shaft corresponding to the number and position of the push plates, and installing proximity sensors on the furnace body. Through the cooperation of the sensors and induction heads, plus the controller and preset program, the ignition timing of the igniter is controlled.

[0036] The user can first close the valve 20 of the discharge port 3 to allow the ash to accumulate in the waste heat recovery chamber until the ash covers the heating tube 18. The heat energy generated in the ash will heat the medium in the heating tube 18. Then, open the valve 20 of the discharge port 3. The push plate 19 will push the lower layer of ash that has lost heat energy into the discharge port 3 for discharge. The baffle 21 will block the ash to prevent excess ash from being discharged directly, so that the ash in the waste heat recovery chamber can always cover the heating tube 18.

[0037] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A biomass low-carbon energy-saving boiler, comprising a furnace body (1), wherein the furnace body (1) is provided with a feed inlet (2) and a discharge outlet (3), characterized in that: The furnace body (1) is divided into a drying chamber (4) and a combustion chamber (5) from top to bottom. A rotating shaft (6) is rotatably connected inside the furnace body (1) and passes through the drying chamber (4) and the combustion chamber (5). A driving mechanism for driving the rotating shaft (6) to rotate is provided on the furnace body (1). A push plate 1 (7) and a push plate 2 (8) are respectively provided in the drying chamber (4) and the combustion chamber (5). A feeding trough 1 (9) that is offset from the feed inlet (2) is provided between the drying chamber (4) and the combustion chamber (5). A feeding trough 2 (10) is provided between the combustion chamber (5) and the discharge port (3). An igniter (11), an exhaust trough (12) and several heating tubes 1 (13) are provided in the combustion chamber (5). An annular section (14) is provided on the heating tube 1 (13).

2. The biomass low-carbon energy-saving boiler according to claim 1, characterized in that: A pad (15) is rotatably connected to the push plate 2 (8), and the size of the feed trough 2 (10) is sufficient for the pad (15) to be flipped downwards and inserted into it.

3. A biomass low-carbon energy-saving boiler according to claim 1, characterized in that: The diameter of the annular segment (14) of the plurality of heating tubes (13) gradually increases from top to bottom.

4. A biomass low-carbon energy-saving boiler according to claim 3, characterized in that: The lower end of the feeding trough (9) is provided with a guide plate (16) to avoid the heating pipe (13).

5. A biomass low-carbon energy-saving boiler according to claim 1, characterized in that: The lower end of the furnace body (1) is also divided into a waste heat recovery chamber (17). The waste heat recovery chamber (17) is connected to the combustion chamber (5) through the feeding trough (10). Several heating tubes (18) are provided in the waste heat recovery chamber (17). Several push plates (19) are provided in the part of the rotating shaft (6) located in the waste heat recovery chamber (17).

6. A biomass low-carbon energy-saving boiler according to claim 5, characterized in that: A valve (20) is provided at the discharge port (3), and a baffle (21) is provided between the push plate three (19) and the discharge trough two (10).

7. A biomass low-carbon energy-saving boiler according to claim 1, characterized in that: The drive mechanism includes a motor (22) fixedly connected to the furnace body (1), and the output shaft of the motor (22) is fixedly connected to the rotating shaft (6).

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