A hot air furnace for biomass fuel processing

Abstract

This utility model discloses a hot air furnace for biomass fuel processing, comprising a biomass hot air furnace, a fire outlet at the front end of the biomass hot air furnace, a feeding port at the upper end of the biomass hot air furnace, and a uniform feeding structure fixedly installed on the outer surface of the upper end of the biomass hot air furnace. The hot air furnace for biomass fuel processing of this utility model, through the uniform feeding structure, utilizes spiral blades to propel the material, improving the stability of the feeding process. During feeding, the material is pulverized by a first crushing roller and a second crushing roller, improving the combustion efficiency of the material inside the biomass hot air furnace.

Description

Technical Field

[0001] This utility model relates to the field of biomass hot air furnace technology, specifically a hot air furnace for biomass fuel processing. Background Technology

[0002] A biomass hot air furnace is a device that uses biomass fuels (such as straw, wood chips, sawdust, rice husks, etc.) as energy to generate hot air for drying, heating, or industrial heating. Due to its wide availability, renewable nature, and environmental friendliness, biomass hot air furnaces are widely used in agriculture, food processing, wood drying, and chemical industries.

[0003] However, existing biomass hot blast stoves have the following problems during the feeding process: 1. Uneven feeding: Traditional hot blast stoves usually use manual or simple gravity feeding methods, which leads to uneven fuel input, affects combustion stability, and may even cause temperature fluctuations inside the hot blast stove, reducing thermal efficiency. 2. Incomplete combustion of fuel: If biomass fuels (such as straw, wood blocks, etc.) are not crushed before being put into the hot air furnace, the particles may be too large, resulting in incomplete combustion. This not only reduces thermal efficiency but also increases the number of unburned particles in the flue gas, affecting environmental performance.

[0004] Therefore, we propose a hot air furnace for biomass fuel processing. Utility Model Content (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides a hot air furnace for biomass fuel processing, which has the advantages of improving the stability of feeding, facilitating the crushing of materials, and improving the combustion efficiency, and can effectively solve the problems in the background art. (II) Technical Solution

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hot air furnace for biomass fuel processing, comprising a biomass hot air furnace, wherein a fire outlet is provided at the front end of the biomass hot air furnace, a feeding port is provided at the upper end of the biomass hot air furnace, and a uniform feeding structure is fixedly installed on the upper outer surface of the biomass hot air furnace. The uniform feeding structure includes a base plate, a servo motor, a conveying pipe, an end plate, a discharge pipe, a discharge hopper, a storage cylinder, a straight cut surface, a protective shell, a stepper motor, a rectangular discharge channel, a guide plate, a first rotating shaft, a spiral blade, a first gear, a second gear, a second rotating shaft, a third rotating shaft, a first crushing roller and a second crushing roller, and the base plate is fixed on the upper outer surface of the biomass hot air furnace, and the lower end of the discharge pipe extends into the feeding port.

[0007] Preferably, the feeding pipe is fixed to the upper outer surface of the substrate, the servo motor is fixedly installed between one end of the outer surface of the feeding pipe and the upper outer surface of the substrate, the feeding hopper is fixed to the end of the upper outer surface of the feeding pipe near the servo motor, the storage cylinder is fixed to the upper outer surface of the feeding hopper, the rectangular feeding channel is opened in the middle of the upper outer surface of the storage cylinder, and the rectangular feeding channel extends to the lower outer surface of the storage cylinder, and the inner cavity of the feeding hopper is connected to the inner cavities of the feeding pipe and the storage cylinder.

[0008] Preferably, the end plate is fixed to the outer surface of the end of the feed tube away from the servo motor, the discharge tube is fixed to the lower outer surface of the feed tube away from the servo motor, the first rotating shaft and the spiral blade are both located inside the feed tube, and the spiral blade is fixed to the outer wall of the first rotating shaft.

[0009] Preferably, a coupling is provided between the first rotating shaft and the servo motor, and the outer surface of one end of the first rotating shaft is fixedly connected to the outer surface of one end of the output shaft of the servo motor through the coupling. Sealed bearings are provided between the first rotating shaft and the feed pipe and the end plate, and the first rotating shaft is rotatably connected to the feed pipe and the end plate through the sealed bearings.

[0010] Preferably, the straight cut surface is located on the upper part of the outer surface of one side of the storage cylinder, the protective shell is fixed on one side of the straight cut surface, the stepper motor is fixed at one end of the outer surface of one side of the protective shell, the number of guide plates is two sets, the two sets of guide plates are fixed on the left and right sides of the upper part of the rectangular feeding channel, the first crushing roller and the second crushing roller are both located at the lower part of the guide plate, the first crushing roller is located on one side of the second crushing roller, the first crushing roller is fixed on the outer wall of the middle part of the second rotating shaft, the second crushing roller is fixed on the outer wall of the middle part of the third rotating shaft, the first gear and the second gear are both located inside the protective shell, the first gear is fixed on the outer wall of one end of the second rotating shaft, and the second gear is fixed on the outer wall of one end of the third rotating shaft.

[0011] Preferably, one outer surface of the first gear meshes with one outer surface of the second gear. Sealed bearings are provided between the second rotating shaft, the third rotating shaft, the storage cylinder, and the protective shell. The second rotating shaft and the third rotating shaft are rotatably connected to the storage cylinder and the protective shell through the sealed bearings. A coupling is provided between the second rotating shaft and the stepper motor. One outer surface of the second rotating shaft is fixedly connected to one outer surface of the output shaft of the stepper motor through the coupling. (III) Beneficial Effects

[0012] Compared with the prior art, the present invention provides a hot air furnace for biomass fuel processing, which has the following beneficial effects: 1. The hot air furnace for biomass fuel processing achieves uniform fuel delivery through a spiral conveying mechanism (spiral blades + servo motor drive), avoiding fuel accumulation or material shortage problems caused by traditional gravity feeding methods, ensuring the stability of combustion inside the hot air furnace, thereby improving thermal efficiency and reducing temperature fluctuations.

[0013] 2. The hot air furnace for biomass fuel processing has a first crushing roller and a second crushing roller that mesh with each other inside the storage cylinder. The fuel is fully crushed before entering the conveying pipe by a stepper motor and gear transmission, thereby reducing the particle size, improving the completeness of combustion, reducing unburned residue, and reducing flue gas pollution. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a hot air furnace for biomass fuel processing according to this utility model.

[0015] Figure 2 This is a schematic diagram of the uniform feeding structure in a hot air furnace for biomass fuel processing according to the present invention.

[0016] Figure 3 This is a partial structural diagram of a uniform feeding structure in a hot air furnace for biomass fuel processing according to the present invention.

[0017] Figure 4 This is a side cross-sectional view of the storage cylinder in a hot air furnace for biomass fuel processing according to this utility model.

[0018] In the diagram: 1. Biomass hot air furnace; 2. Fire outlet; 3. Uniform feeding structure; 4. Feed port; 5. Base plate; 6. Servo motor; 7. Feeding pipe; 8. End plate; 9. Discharge pipe; 10. Discharge hopper; 11. Storage cylinder; 12. Straight cut surface; 13. Protective shell; 14. Stepper motor; 15. Rectangular discharge channel; 16. Guide plate; 17. First rotating shaft; 18. Spiral blade; 19. First gear; 20. Second gear; 21. Second rotating shaft; 22. Third rotating shaft; 23. First crushing roller; 24. Second crushing roller. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] This embodiment is a hot air furnace for biomass fuel processing.

[0021] like Figure 1-4As shown, the biomass hot air furnace 1 includes a fire outlet 2 at its front end and a feeding port 4 at its upper end. A uniform feeding structure 3 is fixedly installed on the upper outer surface of the biomass hot air furnace 1. The uniform feeding structure 3 includes a base plate 5, a servo motor 6, a conveying pipe 7, an end plate 8, a discharge pipe 9, a discharge hopper 10, a storage cylinder 11, a straight cut surface 12, a protective shell 13, a stepper motor 14, a rectangular discharge channel 15, a guide plate 16, a first rotating shaft 17, a spiral blade 18, a first gear 19, a second gear 20, a second rotating shaft 21, a third rotating shaft 22, a first crushing roller 23, and a second crushing roller 24. The base plate 5 is fixed on the upper outer surface of the biomass hot air furnace 1, and the lower end of the discharge pipe 9 extends into the feeding port 4.

[0022] The feeding pipe 7 is fixed to the upper outer surface of the substrate 5. The servo motor 6 is fixedly installed between one end of the outer surface of the feeding pipe 7 and the upper outer surface of the substrate 5. The feeding hopper 10 is fixed to the end of the upper outer surface of the feeding pipe 7 near the servo motor 6. The storage cylinder 11 is fixed to the upper outer surface of the feeding hopper 10. A rectangular feeding channel 15 is opened in the middle of the upper outer surface of the storage cylinder 11 and extends to the lower outer surface of the storage cylinder 11. The inner cavity of the feeding hopper 10 is connected to the inner cavities of the feeding pipe 7 and the storage cylinder 11. The end plate 8 is fixed to the outer surface of the feeding pipe 7 away from the servo motor 6. The feeding pipe 9 is fixed to the... The lower outer surface of the feed pipe 7 is away from the end of the servo motor 6. The first rotating shaft 17 and the spiral blade 18 are both located inside the feed pipe 7, and the spiral blade 18 is fixed to the outer wall of the first rotating shaft 17. A coupling is provided between the first rotating shaft 17 and the servo motor 6. The outer surface of one end of the first rotating shaft 17 is fixedly connected to the outer surface of one end of the output shaft in the servo motor 6 through the coupling. Sealed bearings are provided between the first rotating shaft 17, the feed pipe 7, and the end plate 8. The first rotating shaft 17 is rotatably connected to the feed pipe 7 and the end plate 8 through the sealed bearings. The straight cut surface 12 is opened on the upper part of the outer surface of one side of the storage cylinder 11. Protective shell 13 is fixed to one side of the straight cut surface 12. Stepper motor 14 is fixed to one end of the outer surface of one side of the protective shell 13. There are two sets of guide plates 16, which are fixed to the left and right sides of the upper part of the rectangular feeding channel 15. The first crushing roller 23 and the second crushing roller 24 are both located at the lower part of the guide plate 16. The first crushing roller 23 is located on one side of the second crushing roller 24. The first crushing roller 23 is fixed to the outer wall of the middle part of the second rotating shaft 21. The second crushing roller 24 is fixed to the outer wall of the middle part of the third rotating shaft 22. The first gear 19 and the second gear 20 are both located inside the protective shell 13. The first gear 19 is fixed to the outer wall of the third rotating shaft 22. The outer wall of one end of the second rotating shaft 21 is fixed to the outer wall of one end of the third rotating shaft 22; one side of the outer surface of the first gear 19 meshes with one side of the outer surface of the second gear 20; sealed bearings are provided between the second rotating shaft 21, the third rotating shaft 22 and the storage cylinder 11 and the protective shell 13; the second rotating shaft 21 and the third rotating shaft 22 are rotatably connected to the storage cylinder 11 and the protective shell 13 through the sealed bearings; a coupling is provided between the second rotating shaft 21 and the stepper motor 14; one end of the outer surface of the second rotating shaft 21 is fixedly connected to one end of the outer surface of the output shaft of the stepper motor 14 through the coupling.

[0023] It should be noted that this utility model is a hot air furnace for biomass fuel processing. The biomass hot air furnace 1, the fire outlet 2, and the feeding port 4 described in this document are all prior art and can be effectively known to those skilled in the art. Specific details will not be elaborated further. The uniform feeding structure 3 pours the material into the upper part of the rectangular feeding trough 15, guides it through the guide plate 16, and guides it between the first crushing roller 23 and the second crushing roller 24. The stepper motor 14 drives the second rotating shaft 21 to rotate. The second rotating shaft 21 is connected to the first gear 1. The servo motor 6 drives the second gear 20 to rotate, which in turn drives the third rotating shaft 22 to rotate. The second rotating shaft 21 drives the first crushing roller 23 to rotate, and the third rotating shaft 22 drives the second crushing roller 24 to rotate. The first crushing roller 23 and the second crushing roller 24 crush the material. The servo motor 6 drives the first rotating shaft 17 and the spiral blade 18 to rotate. The spiral blade 18 feeds the crushed material, improving the stability of feeding. The crushed material also has better combustion efficiency inside the biomass hot air furnace 1.

[0024] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hot air furnace for biomass fuel processing, comprising a biomass hot air furnace (1), wherein a fire outlet (2) is provided at the front end of the biomass hot air furnace (1), and a feeding port (4) is provided at the upper end of the biomass hot air furnace (1), characterized in that: The upper outer surface of the biomass hot air furnace (1) is fixedly equipped with a uniform feeding structure (3). The uniform feeding structure (3) includes a base plate (5), a servo motor (6), a conveying pipe (7), an end plate (8), a discharge pipe (9), a discharge hopper (10), a storage cylinder (11), a straight cut surface (12), a protective shell (13), a stepper motor (14), a rectangular discharge channel (15), a guide plate (16), a first rotating shaft (17), a spiral blade (18), a first gear (19), a second gear (20), a second rotating shaft (21), a third rotating shaft (22), a first crushing roller (23), and a second crushing roller (24). The base plate (5) is fixed on the upper outer surface of the biomass hot air furnace (1), and the lower end of the discharge pipe (9) extends into the feeding port (4).

2. The hot air furnace for biomass fuel processing according to claim 1, characterized in that: The feeding pipe (7) is fixed on the upper outer surface of the substrate (5). The servo motor (6) is fixedly installed between the outer surface of one end of the feeding pipe (7) and the upper outer surface of the substrate (5). The feeding hopper (10) is fixed on the upper outer surface of the feeding pipe (7) near the servo motor (6). The storage cylinder (11) is fixed on the upper outer surface of the feeding hopper (10). The rectangular feeding channel (15) is opened in the middle of the upper outer surface of the storage cylinder (11), and the rectangular feeding channel (15) extends to the lower outer surface of the storage cylinder (11). The inner cavity of the feeding hopper (10) is connected to the inner cavities of the feeding pipe (7) and the storage cylinder (11).

3. A hot air furnace for biomass fuel processing according to claim 2, characterized in that: The end plate (8) is fixed on the outer surface of the end of the feed pipe (7) away from the servo motor (6), and the feed tube (9) is fixed on the lower outer surface of the feed pipe (7) away from the servo motor (6). The first rotating shaft (17) and the spiral blade (18) are both located inside the feed pipe (7), and the spiral blade (18) is fixed on the outer wall of the first rotating shaft (17).

4. A hot air furnace for biomass fuel processing according to claim 3, characterized in that: A coupling is provided between the first rotating shaft (17) and the servo motor (6). The outer surface of one end of the first rotating shaft (17) is fixedly connected to the outer surface of one end of the output shaft of the servo motor (6) through the coupling. Sealed bearings are provided between the first rotating shaft (17), the conveying pipe (7), and the end plate (8). The first rotating shaft (17) is rotatably connected to the conveying pipe (7) and the end plate (8) through the sealed bearings.

5. A hot air furnace for biomass fuel processing according to claim 4, characterized in that: The straight cut surface (12) is located on the upper part of the outer surface of one side of the storage cylinder (11). The protective shell (13) is fixed on one side of the straight cut surface (12). The stepper motor (14) is fixed at one end of the outer surface of one side of the protective shell (13). There are two sets of guide plates (16). The two sets of guide plates (16) are fixed on the left and right sides of the upper part of the rectangular feeding channel (15). The first crushing roller (23) and the second crushing roller (24) are both located below the guide plates (16). The crushing roller (23) is located on one side of the second crushing roller (24). The first crushing roller (23) is fixed to the outer wall of the middle part of the second rotating shaft (21). The second crushing roller (24) is fixed to the outer wall of the middle part of the third rotating shaft (22). The first gear (19) and the second gear (20) are both located inside the protective shell (13). The first gear (19) is fixed to the outer wall of one end of the second rotating shaft (21). The second gear (20) is fixed to the outer wall of one end of the third rotating shaft (22).

6. A hot air furnace for biomass fuel processing according to claim 5, characterized in that: One side of the outer surface of the first gear (19) meshes with one side of the outer surface of the second gear (20). Sealed bearings are provided between the second rotating shaft (21), the third rotating shaft (22), the storage cylinder (11), and the protective shell (13). The second rotating shaft (21) and the third rotating shaft (22) are rotatably connected to the storage cylinder (11) and the protective shell (13) through the sealed bearings. A coupling is provided between the second rotating shaft (21) and the stepper motor (14). One end of the outer surface of the second rotating shaft (21) is fixedly connected to one end of the outer surface of the output shaft in the stepper motor (14) through the coupling.

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