Biomass boiler combustion-supporting device

Abstract

The utility model belongs to the technical field of boiler combustion-supporting, and discloses a biomass boiler combustion-supporting device which comprises a boiler body, one end of the boiler body is fixedly connected with a crushing mechanism, the bottom end of the boiler body is fixedly connected with a support, a combustion-supporting assembly and an air blower of the combustion-supporting assembly are installed at the top end of the support, and the air blower is fixedly connected with the support. The output end of the air blower is fixedly connected with a first air pipe, one end of the first air pipe is fixedly connected with three second air pipes, and one ends of the three second air pipes penetrate through the furnace body and are connected with the lower inner wall of the furnace body in an embedded mode. Air can be evenly distributed to the three second air pipes through the first air pipes, then the air is conveyed to the second air holes of the combustion bearing plate through the first air holes, comburent can be fully combusted under sufficient and even oxygen supply, the combustion efficiency is greatly improved, and the energy utilization rate is effectively increased.

Description

Technical Field

[0001] This utility model belongs to the field of boiler combustion assistance technology, specifically a biomass boiler combustion assistance device. Background Technology

[0002] Against the backdrop of current energy structure adjustment and sustainable development, biomass energy, as a renewable and clean energy resource, is increasingly widely used in heating, power generation, and other fields. Biomass boilers have become one of the key pieces of equipment for utilizing biomass energy.

[0003] Meanwhile, the patent specification with application number CN215808434U discloses a biomass boiler combustion aid device, "including a boiler body, a blower, and a motor. The upper end of the boiler body is provided with a motor base and a motor is provided on the motor base. The motor shaft is connected to a primary transmission system. The transmission system includes a gear cover, inside which is a first transmission shaft. The first transmission shaft is connected to the motor shaft. A first bevel gear is fixedly connected to the outside of the first transmission shaft. The first bevel gear meshes with a second bevel gear that cooperates with it. The second bevel gear is fixedly connected to a second transmission shaft. The second transmission shaft is connected to a secondary transmission system."

[0004] In the operation of existing biomass boiler combustion aids, most combustion air delivery paths are too simple, with only one or two ventilation openings set at the bottom of the boiler for combustion air delivery. This makes it difficult for the air to be evenly distributed in the combustion area, resulting in an unsatisfactory combustion effect. Often, the combustibles cannot be fully and efficiently burned, leading to low energy utilization. Secondly, there is a lack of effective pretreatment for the biomass raw materials fed into the boiler. Problems such as uneven particle size of the raw materials often further affect the stability and continuity of combustion.

[0005] Therefore, a biomass boiler combustion aid device is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a biomass boiler combustion aid device, which enables the combustible material to burn fully under a sufficient and uniform oxygen supply, greatly improving combustion efficiency and effectively enhancing energy utilization. It also solves the problem of uneven raw material particle size affecting combustion and ensures the stability and continuity of the combustion process.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a biomass boiler combustion aid device, comprising a furnace body, a crushing mechanism fixedly connected to one end of the furnace body, a support fixedly connected to the bottom end of the furnace body, and a combustion aid component installed at the top of the support.

[0008] The combustion-supporting component includes a blower, which is fixedly connected to a bracket. The output end of the blower is fixedly connected to a first air duct, and one end of the first air duct is fixedly connected to three second air ducts. One end of each of the three second air ducts penetrates the furnace body and is embedded in the lower inner wall of the furnace body.

[0009] Preferably, a combustion support plate is fixedly connected to the inner surface of the furnace body, the three air ducts are all located below the combustion support plate, and multiple air holes are opened on the upper part of the outer surface of the three air ducts. Multiple air holes are opened on the top of the combustion support plate.

[0010] Preferably, the second air duct is distributed at equal intervals and parallel to each other in the furnace body, and the outer surface of the second air duct is provided with reinforcing ribs.

[0011] Preferably, one end of the furnace body is connected to a furnace door via a hinge, the edge of the furnace door is provided with a high-temperature resistant sealing strip, and a chimney is installed at the top of the furnace body.

[0012] Preferably, the crushing mechanism includes a crushing frame, with two crushing rollers rotatably connected to the inner surface of the crushing frame. Multiple crushing rods are fixedly mounted on the outer surfaces of the two crushing rollers. A fixing plate is fixedly connected to one end of the crushing frame, and a drive shaft is rotatably connected to the top of the fixing plate. Two bevel gears are fixedly sleeved on the outer surface of the drive shaft, and bevel gears are meshed with the outer surfaces of the two bevel gears. One end of each of the two crushing rollers passes through the crushing frame and is fixedly connected to the two bevel gears respectively. A first motor is mounted on the upper part of the fixing plate, and the output end of the first motor is fixedly connected to one end of the drive shaft.

[0013] Preferably, a conveying pipe is fixedly connected to the bottom end of the crushing frame, the other end of the conveying pipe is fixedly connected to the furnace body, an auger conveying rod is installed on the inner surface of the conveying pipe, a second motor is fixedly connected to one end of the conveying pipe, and the output end of the second motor passes through the conveying pipe and is fixedly connected to the auger conveying rod.

[0014] Preferably, the crushing rods on the outer surfaces of the two crushing rollers are staggered.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By setting up a combustion-supporting component, under the strong action of the blower, air can be evenly distributed to three air ducts two through air duct one, and then transmitted to air duct two on the combustion support plate through air hole one. This can deliver air to the combustion material on the combustion support plate in an all-round and multi-layer manner, so that the combustion material can be fully burned under a sufficient and uniform oxygen supply, which greatly improves the combustion efficiency and effectively enhances the energy utilization rate.

[0017] 2. By setting up a crushing mechanism, the two crushing rollers are driven by the first motor to rotate synchronously, and the crushing rods on the outer surface of the two crushing rollers are staggered, which can fully crush the input biomass raw materials. The crushed raw materials can be smoothly transported to the combustion support plate through the conveying pipe for combustion, which not only solves the problem of uneven raw material particles affecting combustion, but also ensures the stability and continuity of the combustion process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the furnace body of this utility model;

[0020] Figure 3 This is a cross-sectional view of the furnace body of this utility model and a schematic diagram of the removed combustion support plate;

[0021] Figure 4 This is a schematic diagram of the structure of duct one and duct two of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the crushing frame of this utility model.

[0023] In the diagram: 1. Furnace body; 2. Support frame;

[0024] 3. Combustion-supporting components; 31. Duct 2; 32. Blower; 33. Duct 1; 34. Air vent 1;

[0025] 4. Chimney;

[0026] 5. Crushing mechanism; 51. Second motor; 52. First motor; 53. Drive shaft; 54. Fixed plate; 55. Bevel gear one; 56. Bevel gear two; 57. Crushing rod; 58. Crushing roller; 59. Conveying pipe; 60. Screw conveyor rod;

[0027] 6. Air vent 2; 7. Combustion support plate; 8. Furnace door; 9. Crushing frame. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1 to 5As shown, this utility model provides a biomass boiler combustion aid device, including a furnace body 1, a crushing mechanism 5 fixedly connected to one end of the furnace body 1, a support 2 fixedly connected to the bottom end of the furnace body 1, and a combustion aid component 3 installed at the top end of the support 2.

[0030] The combustion-supporting component 3 includes a blower 32, which is fixedly connected to the bracket 2. The output end of the blower 32 is fixedly connected to a duct 33, and one end of the duct 33 is fixedly connected to three ducts 31. One end of each of the three ducts 31 passes through the furnace body 1 and is embedded in the lower inner wall of the furnace body 1. This layout makes the device compact and highly integrated, which is conducive to improving the overall efficiency of biomass treatment and combustion, and lays the foundation for the efficient utilization of biomass energy from the overall design.

[0031] Specifically, a combustion support plate 7 is fixedly connected to the inner surface of the furnace body 1. Three air ducts 31 are located below the combustion support plate 7. Multiple air holes 34 are opened on the upper part of the outer surface of the three air ducts 31. Multiple air holes 6 are opened on the top of the combustion support plate 7, realizing the stratified supply of air. The air holes 34 of the lower air duct 31 first provide a large amount of air to aid combustion. Some air permeates to the upper layer of fuel through the air holes 6, so that the fuel can get sufficient oxygen at different heights, thereby promoting the complete combustion of fuel.

[0032] like Figures 1 to 5 As shown, the second type of air duct 31 is evenly distributed and parallel to each other within the furnace body 1. The outer surface of the second type of air duct 31 is equipped with reinforcing ribs. This evenly distributed and parallel distribution ensures that air is uniformly dispersed throughout the boiler, preventing localized oxygen deficiency or excess, and resulting in more uniform and stable combustion. The reinforcing ribs enhance the structural strength of the second type of air duct 31 under high-temperature conditions, extending its service life and reducing combustion failure or safety hazards caused by duct damage, thus ensuring the long-term reliable operation of the combustion system.

[0033] Furthermore, one end of the furnace body 1 is connected to a furnace door 8 via a hinge. The edge of the furnace door 8 is equipped with a high-temperature resistant sealing strip. A chimney 4 is installed at the top of the furnace body 1. The furnace door 8 with the high-temperature resistant sealing strip can effectively prevent heat loss and flue gas leakage. The chimney 4 can promptly discharge the flue gas generated by combustion.

[0034] like Figures 1 to 5As shown, the crushing mechanism 5 includes a crushing frame 9. Two crushing rollers 58 are rotatably connected to the inner surface of the crushing frame 9. Multiple crushing rods 57 are fixedly provided on the outer surface of each of the two crushing rollers 58. The crushing rods 57 on the outer surface of the two crushing rollers 58 are staggered, which further improves the crushing effect, avoids crushing blind spots, and enables biomass to be crushed more comprehensively and finely. A fixing plate 54 is fixedly connected to one end of the crushing frame 9. A drive shaft 53 is rotatably connected to the top of the fixing plate 54. Two bevel gears 55 are fixedly sleeved on the outer surface of the drive shaft 53. Bevel gears 56 are meshed on the outer surfaces of the two bevel gears 55. One end of each of the two crushing rollers 58 passes through the crushing frame 9 and is fixedly connected to the two bevel gears 56 respectively. A first motor 52 is installed on the upper part of the fixing plate 54. The output end of the first motor 52 is fixedly connected to one end of the drive shaft 53. It can efficiently crush biomass of different shapes and sizes into small particles suitable for combustion, increasing the contact area between biomass and oxygen and accelerating the combustion speed.

[0035] It is worth noting that a conveying pipe 59 is fixedly connected to the bottom end of the crushing frame 9, and the other end of the conveying pipe 59 is fixedly connected to the furnace body 1. An auger conveying rod 60 is installed on the inner surface of the conveying pipe 59, and a second motor 51 is fixedly connected to one end of the conveying pipe 59. The output end of the second motor 51 passes through the conveying pipe 59 and is fixedly connected to the auger conveying rod 60, which ensures the continuity and stability of the fuel supply, so that the boiler combustion process is not affected by the interruption or instability of the fuel supply, thereby maintaining a highly efficient and stable combustion state.

[0036] The first motor 52, the second motor 51, and the blower 32 are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switches, which are not the main technical points of this patent and will not be described in detail. The wiring diagram of the motors in this utility model is common knowledge in the field, and their working principle is already known technology. The appropriate model is selected based on actual use; therefore, the control method and wiring layout of the motors will not be explained in detail.

[0037] Working principle and process: When biomass fuel needs to be burned, the raw material that does not need to be crushed is first placed on the combustion support plate 7 inside the furnace through the furnace door 8 and ignited. Then, the furnace door 8 is closed and the first motor 52 is turned on. The first motor 52 drives the drive shaft 53 to rotate, which in turn drives two bevel gears 55 to rotate. The bevel gears 55 drive two bevel gears 56 to rotate, and the rotation of the bevel gears 56 drives the crushing roller 58 to rotate. Large pieces of biomass raw material that need to be crushed are placed between the two crushing rollers 58. Under the opposite rotation of the two crushing rollers 58, the biomass raw material is squeezed and cut by the interaction of the crushing rods 57, thus crushing it into smaller particles. The crushed biomass particles are then processed by the crushing rollers. The crushed biomass pellets are conveyed by the conveying pipe 59 fixedly connected to the bottom of the crushed frame 9. The second motor 51 is started, and the second motor 51 drives the auger conveyor rod 60 to rotate inside the conveying pipe 59. The spiral structure of the auger conveyor rod 60 is used to stably convey the crushed biomass pellets into the furnace body 1. Then the blower 32 is turned on. The blower 32 draws in outside air and conveys it through the first air duct 33. The first air duct 33 divides the air into three second air ducts 31 and introduces the air into the furnace body 1. When the air flows in the second air duct 31, it will be sprayed onto the combustibles on the combustion support plate 7 at a certain angle and pressure through the first air hole 34 and the second air hole 6, providing sufficient oxygen for combustion, promoting the combustion of biomass pellets, and making the combustion more complete.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biomass boiler combustion aid device, comprising a boiler body (1), characterized in that: A crushing mechanism (5) is fixedly connected to one end of the furnace body (1), a support (2) is fixedly connected to the bottom end of the furnace body (1), and a combustion-supporting component (3) is installed at the top of the support (2). The combustion-supporting component (3) includes a blower (32), which is fixedly connected to the bracket (2). The output end of the blower (32) is fixedly connected to a first air duct (33), and one end of the first air duct (33) is fixedly connected to three second air ducts (31). One end of each of the three second air ducts (31) penetrates the furnace body (1) and is embedded in the lower inner wall of the furnace body (1).

2. The biomass boiler combustion aid device according to claim 1, characterized in that: The inner surface of the furnace body (1) is fixedly connected to a combustion support plate (7). The three air ducts (31) are all located below the combustion support plate (7). The upper part of the outer surface of the three air ducts (31) is provided with multiple air holes (34). The top of the combustion support plate (7) is provided with multiple air holes (6).

3. The biomass boiler combustion aid device according to claim 1, characterized in that: The second air duct (31) is distributed at equal intervals and parallel to each other inside the furnace body (1), and the outer surface of the second air duct (31) is provided with reinforcing ribs.

4. The biomass boiler combustion aid device according to claim 1, characterized in that: One end of the furnace body (1) is connected to a furnace door (8) via a hinge. A high-temperature resistant sealing strip is provided at the edge of the furnace door (8). A chimney (4) is installed at the top of the furnace body (1).

5. A biomass boiler combustion aid device according to claim 1, characterized in that: The crushing mechanism (5) includes a crushing frame (9), on the inner surface of the crushing frame (9) are rotatably connected two crushing rollers (58), and on the outer surface of the two crushing rollers (58) are fixedly provided multiple crushing rods (57). One end of the crushing frame (9) is fixedly connected to a fixing plate (54), and the top end of the fixing plate (54) is rotatably connected to a drive shaft (53). Two bevel gears (55) are fixedly sleeved on the outer surface of the drive shaft (53), and bevel gears (56) are meshed on the outer surfaces of the two bevel gears (55). One end of each of the two crushing rollers (58) passes through the crushing frame (9) and is fixedly connected to the two bevel gears (56) respectively. A first motor (52) is installed on the upper part of the fixing plate (54), and the output end of the first motor (52) is fixedly connected to one end of the drive shaft (53).

6. The biomass boiler combustion aid device according to claim 5, characterized in that: The bottom end of the crushing frame (9) is fixedly connected to a conveying pipe (59), and the other end of the conveying pipe (59) is fixedly connected to the furnace body (1). An auger conveying rod (60) is installed on the inner surface of the conveying pipe (59). A second motor (51) is fixedly connected to one end of the conveying pipe (59), and the output end of the second motor (51) passes through the conveying pipe (59) and is fixedly connected to the auger conveying rod (60).

7. A biomass boiler combustion aid device according to claim 5, characterized in that: The crushing rods (57) on the outer surfaces of the two crushing rollers (58) are staggered.

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