Straw pyrolysis hot blast furnace

Abstract

The utility model belongs to hot -blast furnace technical field especially is a kind of straw pyrolysis hot -blast furnace, including furnace body, the feeding bin of the one side of furnace body setting, the material rack of feeding bin bottom outside welding connection, the feeding pipe of feeding bin bottom end middle part intercommunication and the material conveying pipe of feeding pipe bottom intercommunication;The side distribution of feeding bin has transmission structure, and the inner chamber of feeding bin is rotatably connected with broken roll, and the inner chamber of material conveying pipe is provided with rotating shaft, and the outer surface of rotating shaft is equipped with spiral blade, and the top side of furnace body is fixed with second motor.

Description

Technical Field

[0001] This utility model relates to the field of hot air furnace technology, specifically a straw pyrolysis hot air furnace. Background Technology

[0002] Driven by the dual demands of energy structure transformation and environmental protection, the efficient resource utilization of straw, a widely available and abundant renewable biomass resource, has become a key research focus in the industry. Straw pyrolysis technology, as one of the core technologies for realizing the energy conversion and high-value utilization of straw, can transform straw into various high-value-added products such as biochar, combustible gas, and liquid tar, and has significant application value in fields such as agricultural waste treatment and new energy development. The straw pyrolysis hot air furnace, as a key core piece of equipment in the straw pyrolysis system, directly determines the straw pyrolysis efficiency, product quality, and system operational stability.

[0003] Straw processing requires the use of hot air furnaces. Currently, the material conveying system of hot air furnaces mostly uses simple screw conveyors or belt conveyors to directly send straw into the pyrolysis chamber. However, this conveying method easily leads to the accumulation of straw in the pyrolysis chamber, resulting in localized excessive material thickness. The material is squeezed against each other, hindering the flow of hot air and preventing the inner layer of material from absorbing heat in time, thus causing the pyrolysis reaction to lag. At the same time, in some areas where the material is sparsely distributed, the hot air flows directly through, resulting in heat waste and insufficient heat exchange with the material, reducing the efficiency of straw pyrolysis.

[0004] Therefore, we propose a straw pyrolysis hot air furnace to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a straw pyrolysis hot air furnace, solving the problem mentioned in the background art that straw processing requires the use of a hot air furnace. Currently, the material conveying system of hot air furnaces mostly uses simple screw conveyors or belt conveyors to directly send straw into the pyrolysis chamber. However, such conveying methods easily lead to the accumulation of straw in the pyrolysis chamber, forming localized excessively thick material. The material is squeezed against each other, hindering the flow of hot air, preventing the inner layer of material from absorbing heat in time, thus causing the pyrolysis reaction to lag. At the same time, in some areas the material is sparsely distributed, and the hot air directly passes through, causing heat waste and preventing sufficient contact and heat exchange with the material, thus reducing the efficiency of straw pyrolysis.

[0006] (II) Technical Solution To achieve the above objectives, this utility model specifically adopts the following technical solution: A straw pyrolysis hot air furnace includes a furnace body, a feeding bin disposed on one side of the furnace body, a material rack welded to the outer side of the bottom of the feeding bin, a feeding pipe connected to the middle of the bottom end of the feeding bin, and a conveying pipe connected to the bottom of the feeding pipe. A transmission structure is distributed on one side of the feeding hopper. A crushing roller is rotatably connected to the inner cavity of the feeding hopper. A rotating shaft is provided in the inner cavity of the conveying pipe, and a spiral blade is sleeved on the outer surface of the rotating shaft. A second motor is fixed on one side of the top of the furnace body, and the output end of the second motor is connected to a transmission shaft. A conical diverter seat is sleeved on the outer surface of the transmission shaft, and a diverter plate is distributed below the conical diverter seat. An arc plate is provided on the upper surface of the diverter plate.

[0007] Furthermore, the transmission structure includes a bracket, a first motor, a first pulley, an internal toothed belt, a second pulley, a drive gear, and a driven gear. The bracket is installed at one end of the conveying pipe, and the first motor is fixed at the end of the bracket away from the conveying pipe. The output end of the first motor is connected to the first pulley, and the outer surface of the first pulley is fitted with an internal toothed belt. The inner side of the other end of the internal toothed belt is connected to the second pulley, and the drive gear is connected to the center of one end of the second pulley. The driven gear is meshed with one side of the drive gear.

[0008] Furthermore, a combustion-supporting fan is connected to one side of the bottom of the furnace body, an air outlet is provided on the other side of the furnace body, and an air duct is connected to one end surface of the furnace body.

[0009] Furthermore, the outer ring surface of the driving gear has multiple teeth evenly distributed along the center point, and the driving gear and the driven gear are meshed together through the teeth.

[0010] Furthermore, the conical diverter seat is generally conical in shape, and multiple guide grooves are equidistantly distributed on the conical surface at the top of the conical diverter seat along the center point.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a straw pyrolysis hot air furnace, which has the following beneficial effects: This invention, through its structure including a motor, crushing roller, conical diverter seat, and diverter plate, facilitates the effective dispersion of straw materials input into the furnace body. This prevents the straw materials transported to the pyrolysis chamber from forming excessively thick localized areas, ensuring that the materials are evenly distributed and spread out. This improves the effect and efficiency of subsequent straw pyrolysis, resulting in greater overall practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3This is a top view of the feeding hopper structure of this utility model; Figure 4 This is a side view of the feeding hopper structure of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the furnace body of this utility model.

[0013] In the diagram: 1. Furnace body; 2. Feeding bin; 3. Material rack; 4. Feeding pipe; 5. Conveying pipe; 6. Support; 7. First motor; 8. First pulley; 9. Internal gear belt; 10. Second pulley; 11. Drive gear; 12. Driven gear; 13. Crushing roller; 14. Rotating shaft; 15. Spiral blade; 16. Second motor; 17. Drive shaft; 18. Conical diverter seat; 19. Diverter plate; 20. Arc plate; 21. Combustion fan; 22. Air outlet; 23. Air duct. Detailed Implementation

[0014] 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.

[0015] Example like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, an embodiment of the present invention provides a straw pyrolysis hot air furnace, including a furnace body 1, a feeding bin 2 provided on one side of the furnace body 1, a material rack 3 welded to the outer bottom of the feeding bin 2, a feeding pipe 4 connected to the middle of the bottom end of the feeding bin 2, the two ends of the feeding pipe 4 being connected to the bottom of the feeding bin 2 and the top end of the feeding pipe 4 respectively, and a conveying pipe 5 connected to the bottom of the feeding pipe 4, the conveying pipe 5 penetrating the side wall of the furnace body 1 and extending into the inner cavity of the furnace body 1; A transmission structure is distributed on one side of the feeding bin 2. A crushing roller 13 is rotatably connected to the inner cavity of the feeding bin 2. Multiple crushing teeth are evenly distributed along the center point on the outer surface of the crushing roller 13, and the crushing teeth mesh with each other. A rotating shaft 14 is provided in the inner cavity of the conveying pipe 5, and a spiral blade 15 is sleeved on the outer surface of the rotating shaft 14. A second motor 16 is fixed on one side of the top of the furnace body 1, and the output end of the second motor 16 is connected to a drive shaft 17. A conical diverter seat 18 is sleeved on the outer surface of the drive shaft 17, and the conical diverter seat 18 is used to divert the feed. Below the flow seat 18, there is a flow divider 19. The conical flow divider 18 is rotatably connected to the drive shaft 17 through a bearing seat. The conical flow divider 18 is located below one end of the conveying pipe 5. An arc plate 20 is provided on the upper surface of the flow divider 19. The arc plate 20 is equidistantly distributed along the center point of the flow divider 19. The top of the flow divider 19 is provided with an inclined surface. It is worth noting that the drive shaft 17, the conical flow divider 18, the flow divider 19 and the arc plate 20 are all made of 305 stainless steel, which has the characteristics of high temperature resistance. During use, the straw material to be pyrolyzed is conveyed to the inside of the feeding hopper 2. As the two crushing rollers 13 move in opposite directions inside the feeding hopper 2, the straw material can be effectively crushed. Since the straw material is dried straw, its fiber activity is reduced, preventing entanglement of the crushing rollers 13 bearings during crushing. The crushed straw material is then conveyed to the inside of the conveying pipe 5 by the feeding pipe 4. The rotating shaft 14 inside the conveying pipe 5 drives the spiral blade 15 to rotate, facilitating the subsequent conveying of the crushed straw material to the inside of the furnace body 1. The material falls onto the upper surface of the conical diverter seat 18, and then the straw material moves along the inclined surface of the conical diverter seat 18 and is diverted by multiple diverting grooves. After diversion, the straw material falls onto the upper surface of the diverter plate 19. Before this, the second motor 16 works to make the transmission shaft 17 connected to its output end rotate. The rotation of the transmission shaft 17 drives the diverter plate 19 fixedly connected to its bottom to rotate. At this time, the rotation of the diverter plate 19 drives the arc plate 20 to rotate. The rotation of the diverter plate 19 disperses the straw material, making it evenly dispersed to the inside of the furnace body 1, preventing the material from accumulating.

[0016] like Figure 1 and Figure 3As shown, in some embodiments, the transmission structure includes a bracket 6, a first motor 7, a first pulley 8, an internal toothed belt 9, a second pulley 10, a drive gear 11, and a driven gear 12. The bracket 6 is installed at one end of the conveying pipe 5, and the first motor 7 is fixed at the end of the bracket 6 away from the conveying pipe 5. The output end of the first motor 7 is connected to the first pulley 8, and the outer surface of the first pulley 8 is fitted with an internal toothed belt 9. The inner side of the other end of the internal toothed belt 9 is connected to the second pulley 10, and the center of one end of the second pulley 10 is connected to the drive gear 11. The drive gear 11 is rotatably connected to the side wall of the feeding bin 2 through a rod, and the driven gear 12 is meshed with one side of the drive gear 11. In use, the first motor 7 operates, causing the first pulley 8 connected to its output end to rotate. As the first pulley 8 rotates, the internal toothed belt 9 fitted on its outer surface moves accordingly. The movement of the internal toothed belt 9 causes the second pulley 10, which meshes with it at its other end, to rotate as well. Since the second pulley 10 is fixedly connected to the drive gear 11, the drive gear 11 also rotates as the second pulley 10 rotates. Then, the rotation of the drive gear 11 drives the driven gears 12 meshing with it on both sides to rotate, which facilitates the subsequent rotation of the crushing roller 13 by the rotation of the driven gears 12. It is worth noting that the driven gears 12 on both sides move in opposite directions under the action of the rotation of the drive gear 11.

[0017] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, a combustion-supporting blower 21 is connected to one side of the bottom of the furnace body 1, an air outlet 22 is provided on the other side of the furnace body 1, and an air duct 23 is connected to one end surface of the furnace body 1. The air ducts 23 are distributed at equal intervals along the surface of the furnace body 1, and both ends of the air ducts 23 are connected to the inside of the furnace body 1. When in use, the combustion-supporting blower 21 can effectively assist combustion inside the furnace body 1, while the air duct 23 can effectively deliver air to the inside of the furnace body 1, and the air outlet 22 is used for air outlet treatment.

[0018] like Figure 3 As shown, in some embodiments, the outer ring surface of the driving gear 11 has multiple teeth evenly distributed along the center point, and the driving gear 11 is meshed with the driven gear 12 through the teeth. In use, since the driving gear 11 and the driven gear 12 are meshed, and the driven gear 12 are symmetrically distributed along the vertical center line of the driving gear 11, the rotation of the driving gear 11 can realize the opposite movement of the driven gears 12 on both sides.

[0019] like Figure 5As shown, in some embodiments, the conical diverter seat 18 is generally conical in shape, and the conical surface at the top of the conical diverter seat 18 has multiple guide grooves distributed at equal intervals along the center point. When in use, since the top of the conical diverter seat 18 is set with an inclined surface and multiple guide grooves are evenly distributed on the inclined surface, the straw conveyed to its surface can be effectively dispersed by the conical diverter seat 18, so that the straw can be dispersed and conveyed to the diverter plate 19.

[0020] In summary, the straw material is conveyed to the inside of the feeding hopper 2. At this time, the first motor 7 operates, causing the first pulley 8 to drive the internal toothed belt 9. The movement of the internal toothed belt 9 causes the second pulley 10, which is meshed with it, to rotate as well. With the rotation of the second pulley 10, the drive gear 11 also rotates, driving the driven gear 12 to move in the opposite direction. The rotation of the driven gear 12 causes the crushing roller 13 to rotate, which facilitates the subsequent effective crushing of the straw material. After crushing, the straw material is conveyed to the inside of the conveying pipe 5 under the action of the feeding pipe 4. At this time, when the first motor 7 can still drive the first pulley 8 to rotate, it can drive the rotating shaft 14 inside the conveying pipe 5 to rotate as well, so that it can cooperate with the spiral blade 15. The crushed straw material is conveyed to the inside of the furnace body 1 and falls onto the upper surface of the conical diverter seat 18. The straw material then moves along the inclined surface of the conical diverter seat 18 and is diverted by multiple diverter slots. After diversion, the straw material falls onto the upper surface of the diverter plate 19. Before this, the second motor 16 operates, causing the drive shaft 17 connected to its output end to rotate. The rotation of the drive shaft 17 drives the diverter plate 19 fixedly connected to its bottom to rotate as well. At this time, the rotation of the diverter plate 19 drives the arc plate 20 to rotate as well. The rotation of the diverter plate 19 disperses the straw material, making it evenly distributed inside the furnace body 1 and preventing material accumulation.

[0021] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A straw pyrolysis hot air furnace, comprising a furnace body (1), a feeding bin (2) provided on one side of the furnace body (1), a material rack (3) welded to the outer side of the bottom of the feeding bin (2), a feeding pipe (4) connected to the middle of the bottom end of the feeding bin (2), and a conveying pipe (5) connected to the bottom of the feeding pipe (4). Its features are: A transmission structure is distributed on one side of the feeding bin (2). A crushing roller (13) is rotatably connected to the inner cavity of the feeding bin (2). A rotating shaft (14) is provided in the inner cavity of the conveying pipe (5). A spiral blade (15) is sleeved on the outer surface of the rotating shaft (14). A second motor (16) is fixed on one side of the top of the furnace body (1). A transmission shaft (17) is connected to the output end of the second motor (16). A conical diverter seat (18) is sleeved on the outer surface of the transmission shaft (17). A diverter plate (19) is distributed below the conical diverter seat (18). An arc plate (20) is provided on the upper surface of the diverter plate (19).

2. The straw pyrolysis hot air furnace according to claim 1, characterized in that: The transmission structure includes a bracket (6), a first motor (7), a first pulley (8), an internal gear belt (9), a second pulley (10), a drive gear (11), and a driven gear (12). The bracket (6) is installed at one end of the conveying pipe (5), and the first motor (7) is fixed at the end of the bracket (6) away from the conveying pipe (5). The output end of the first motor (7) is connected to the first pulley (8), and the outer surface of the first pulley (8) is fitted with an internal gear belt (9). The inner side of the other end of the internal gear belt (9) is connected to the second pulley (10), and the center of one end of the second pulley (10) is connected to the drive gear (11). The driven gear (12) is meshed with one side of the drive gear (11).

3. The straw pyrolysis hot air furnace according to claim 1, characterized in that: A combustion-supporting fan (21) is connected to one side of the bottom of the furnace body (1), an air outlet (22) is provided on the other side of the furnace body (1), and an air duct (23) is connected to one end of the furnace body (1).

4. A straw pyrolysis hot air furnace according to claim 2, characterized in that: The outer ring surface of the driving gear (11) has multiple teeth evenly distributed along the center point, and the driving gear (11) and the driven gear (12) are meshed together through the teeth.

5. A straw pyrolysis hot air furnace according to claim 1, characterized in that: The conical diverter seat (18) is cone-shaped, and multiple guide grooves are distributed at equal intervals along the center point on the cone-shaped surface at the top of the conical diverter seat (18).

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