Biomass particle burner

Abstract

The utility model discloses a biomass particle burner which comprises a base and a feeding mechanism. A combustion furnace is fixedly connected to the front side of the upper surface of the base, a hearth is arranged in the combustion furnace, a leading-out channel is arranged on the left side of the outer arc face of the combustion furnace and communicates with the hearth, air return pipelines which are symmetrically distributed front and back are arranged at the upper end of the leading-out channel, and the air return pipelines communicate with the outer arc face of the combustion furnace. A fire grate is fixedly connected to the lower end of the interior of the combustion furnace, an air inlet is formed in the right end of the outer arc face of the combustion furnace and located in the lower end of the fire grate, a lantern ring is fixedly connected between the edge of the top wall of the combustion furnace and the edge of the lower surface of the fire grate, and evenly-distributed air inlet holes are formed in the outer arc face of the lantern ring. According to the biomass particle combustion machine, through the design of the air flue, combustion is facilitated, meanwhile, an electric appliance is protected, and meanwhile heat can be recycled through air cooling.

Description

Technical Field

[0001] This utility model relates to the field of biomass pellet combustion technology, specifically a biomass pellet burner. Background Technology

[0002] In a broad sense, burners can be considered a type of appliance, including household water heaters, gas stoves, and even lighters. Based on their working principle, a burner can be defined as a device that converts substances into heat energy through a chemical reaction called combustion—that is, mixing air and fuel in an appropriate ratio using a premixing device to ensure complete combustion.

[0003] A biomass pellet burner uses agricultural and forestry waste pellets, such as straw, as fuel and employs a semi-gasification combustion method. This effectively avoids problems such as slagging that occur during direct combustion of straw pellets. It utilizes precise control of air distribution, feeding, gasification, and combustion to achieve efficient and clean combustion within an integrated machine. The pellet burner directly outputs high-temperature flames and flue gas, and can be directly connected to energy-consuming equipment such as boilers and industrial kilns, enjoying a wide market. However, existing burners suffer from backfire in the feed pipe, which can eventually burn out the feed motor. Furthermore, the pellets fall freely into the furnace through the feed pipe, causing uneven distribution and hindering combustion. The existing air intake structure allows air to enter tangentially along the furnace wall, flowing circumferentially along the inner edge of the furnace and rarely reaching directly below the grate, resulting in poor combustion. Additionally, the jacketed structure is water-cooled, and the water is discharged after heat exchange, causing heat loss. Therefore, we propose a biomass pellet burner. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a biomass pellet burner that, through the design of the air duct, facilitates combustion while protecting the electrical components, and through air cooling, can recover and utilize heat, thus effectively solving the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a biomass pellet burner, including a base and a feeding mechanism;

[0007] A combustion furnace is fixedly connected to the front side of the upper surface of the base. The combustion furnace has a furnace chamber inside. An exhaust channel is provided on the left side of the outer arc surface of the combustion furnace. The exhaust channel is connected to the furnace chamber. The upper end of the exhaust channel has symmetrically distributed return air pipes. The return air pipes are all connected to the outer arc surface of the combustion furnace. A grate is fixedly connected to the lower end of the interior of the combustion furnace. An air inlet is opened at the right end of the outer arc surface of the combustion furnace. The air inlet is located at the lower end of the grate. A collar is fixedly connected between the edge of the top wall of the combustion furnace and the edge of the lower surface of the grate. The outer arc surface of the collar has evenly distributed air inlet holes. The diameter of the air inlet holes gradually decreases counterclockwise from the air inlet position. A feeding box is fixedly connected to the rear side of the upper surface of the base.

[0008] The feeding mechanism includes a feeding inclined pipe and a booster fan. The feeding inclined pipe is fixedly connected to the inner left side of the feeding box. The lower end of the feeding inclined pipe is connected to the furnace. The upper end of the feeding inclined pipe is fixedly connected to the booster fan. The design of the air duct facilitates combustion while protecting electrical appliances. At the same time, the air cooling can recover and utilize heat.

[0009] Furthermore, it also includes a control switch assembly, which is located on the right side of the base. The input end of the control switch assembly is electrically connected to an external power source, and the input end of the air-cooled fan is electrically connected to the output end of the control switch assembly to control the opening and closing of electrical appliances.

[0010] Furthermore, the feeding mechanism also includes a bolt conveying shaft, a feeding pipe, a motor base, a motor, a chain, and a sprocket. The feeding pipe is fixedly connected to the middle of the discharge inclined pipe, and the bolt conveying shaft is rotatably connected inside the feeding pipe. The motor base is fixedly connected to the front side of the feeding pipe, and the motor is fixedly connected to the upper end of the motor base. A sprocket is fixedly sleeved on the right side of the motor's output shaft, and a sprocket is fixedly sleeved on the right end of the bolt conveying shaft. Sprockets 1 and sprocket 2 are rotatably connected by a chain. The input end of the motor is electrically connected to the output end of the control switch group to realize the feeding of biomass.

[0011] Furthermore, the feeding mechanism also includes an air-cooled fan. An air-cooled fan is fixedly connected to the inner left side of the feeding box. The air-cooled fan is located at the lower end of the feeding inclined pipe. The air outlet of the air-cooled fan is connected to the combustion furnace through a connecting pipe. The input end of the air-cooled fan is electrically connected to the output end of the control switch group to cool the combustion furnace.

[0012] Furthermore, a blower is fixedly connected to the right end of the air inlet, and the input end of the blower is electrically connected to the output end of the control switch group to achieve combustion assistance.

[0013] Furthermore, the lower end of the outer arc surface of the combustion furnace is provided with ash discharge port one and ash discharge port two. Ash discharge port one is located at the lower end of the grate, and ash discharge port two is located at the upper end of the grate, which facilitates the cleaning of ash.

[0014] Furthermore, the lower surface of the base is fixedly connected with wheels symmetrically distributed at the four corners for easy movement.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This biomass pellet burner has the following advantages:

[0016] 1. The booster fan pressurizes the inside of the feed slant pipe, blowing the biomass inside the feed slant pipe into the combustion furnace. This prevents backfire and blows the biomass further away from the feed slant pipe, protecting the motor.

[0017] 2. Fresh air flows along the space between the collar and the inner arc surface of the combustion furnace, and enters the interior of the collar through various air inlets, and is sent in from the middle of the grate to improve the combustion effect.

[0018] 3. The air-cooled fan sends cold air into the space between the combustion furnace and the furnace chamber to cool the combustion furnace. The heated air is then introduced into the exhaust channel through the return air duct to recover heat and reduce energy waste. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the combustion furnace and the collar of this utility model.

[0022] In the diagram: 1. Base, 2. Combustion furnace, 3. Outlet channel, 4. Feeding box, 5. Feeding mechanism, 51. Feeding inclined pipe, 52. Air-cooled fan, 53. Bolted conveying shaft, 54. Feeding pipe, 55. Motor base, 56. Motor, 57. Chain, 58. Sprocket I, 59. Booster fan, 6. Air blower, 7. Grate, 8. Collar ring, 9. Return air pipe, 10. Control switch group, 11. Wheel, 12. Ash discharge port I, 13. Ash discharge port II, 14. Air inlet, 15. Furnace chamber. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-3 This embodiment provides a technical solution: a biomass pellet burner, including a base 1 and a feeding mechanism 5;

[0025] Base 1: A combustion furnace 2 is fixedly connected to the front side of its upper surface. The combustion furnace 2 has a furnace chamber 15 inside, with refractory bricks filling the space between the combustion furnace 2 and the furnace chamber 15. An outlet channel 3 is provided on the left side of the outer arc surface of the combustion furnace 2, communicating with the furnace chamber 15. Symmetrically distributed return air pipes 9 are provided at the upper end of the outlet channel 3, all communicating with the outer arc surface of the combustion furnace 2. A grate 7 is fixedly connected to the lower end of the interior of the combustion furnace 2. An air inlet is located at the right end of the outer arc surface of the combustion furnace 2, below the grate 7. A collar 8 is fixedly connected between the edge of the top wall of the combustion furnace 2 and the edge of the lower surface of the grate 7. The outer arc surface of the collar 8 has evenly distributed air inlet holes 14. The diameter gradually decreases counterclockwise from the air inlet. A feeding box 4 is fixedly connected to the rear side of the upper surface of the base 1. A blower 6 is fixedly connected to the right end of the air inlet. The input end of the blower 6 is electrically connected to the output end of the control switch group 10. Ash discharge port 12 and ash discharge port 23 are opened at the lower end of the outer arc surface of the combustion furnace 2. Ash discharge port 12 is located at the lower end of the grate 7, and ash discharge port 23 is located at the upper end of the grate 7. Wheels 11 with four symmetrical corners are fixedly connected to the lower surface of the base 1. The blower 6 sends air into the interior of the combustion furnace 2 through the air inlet. Fresh air flows along the space between the collar 8 and the inner arc surface of the combustion furnace 2, and enters the interior of the collar 8 through each air inlet hole 14. It is sent in from the middle of the grate 7, which improves the combustion effect.

[0026] Feeding mechanism 5: It includes a feeding inclined pipe 51 and a booster fan 59. The feeding inclined pipe 51 is fixedly connected to the inner left side of the feeding box 4. The lower end of the feeding inclined pipe 51 is connected to the furnace 15. The upper end of the feeding inclined pipe 51 is fixedly connected to the booster fan 59. The feeding mechanism 5 also includes a bolt conveying shaft 53, a feeding pipe 54, a motor base 55, a motor 56, a chain 57, and a sprocket 58. The feeding pipe 54 is fixedly connected to the middle of the feeding inclined pipe 51. The feed pipe 54 is internally rotatably connected to a bolt conveying shaft 53. A motor base 55 is fixedly connected to the front side of the feed pipe 54, and a motor 56 is fixedly connected to the upper end of the motor base 55. A sprocket 1 58 is fixedly sleeved on the right side of the output shaft of the motor 56, and a sprocket 2 is fixedly sleeved on the right end of the bolt conveying shaft 53. Sprocket 1 58 and sprocket 2 are rotatably connected by a chain 57. The input end of the motor 56 is electrically connected to the output end of the control switch group 10. The feeding mechanism 5 also includes an air-cooled fan 52. An air-cooled fan 52 is fixedly connected to the inner left side of the feeding box 4. The air-cooled fan 52 is located at the lower end of the discharge inclined pipe 51. The air outlet of the air-cooled fan 52 is connected to the combustion furnace 2 through a connecting pipe. The input end of the air-cooled fan 52 is electrically connected to the output end of the control switch group 10. Biomass is fed in from the feed pipe 54. The output shaft of the motor 56 rotates, driving sprocket 1 58 to rotate. Through the transmission of the chain 57, sprocket 2 and bolt conveying shaft 53 rotate. The feed shaft 53 feeds biomass into the feed inclined pipe 51. The booster fan 59 starts to pressurize the inside of the feed inclined pipe 51. The biomass inside the feed inclined pipe 51 is blown into the inside of the combustion furnace 2, avoiding backfire and blowing the biomass to a position further away from the feed inclined pipe 51. The air-cooled fan 52 sends cold air into the space between the combustion furnace 2 and the furnace chamber 15 to cool the combustion furnace 2. The heated air is introduced into the outlet channel 3 through the return air pipe 9 to recover heat.

[0027] It also includes a control switch group 10, which is located on the right side of the base 1. The input terminal of the control switch group 10 is electrically connected to an external power supply, and the input terminal of the air-cooled fan 52 is electrically connected to the output terminal of the control switch group 10.

[0028] The working principle of the biomass pellet burner provided by this utility model is as follows: Biomass pellets are fed into the feed pipe 54. The output shaft of the motor 56 rotates, driving the first sprocket 58 to rotate. Through the transmission of the chain 57, the second sprocket and the bolt conveying shaft 53 rotate. The bolt conveying shaft 53 feeds the biomass into the feeding inclined pipe 51. The booster fan 59 is started to pressurize the inside of the feeding inclined pipe 51. The biomass located inside the feeding inclined pipe 51 is blown into the inside of the combustion furnace 2, preventing backfire and burning the biomass. The air is blown into a position further away from the feeding inclined pipe 51. The blower 6 sends the air into the interior of the combustion furnace 2 through the air inlet. The fresh air flows along the space between the collar 8 and the inner arc surface of the combustion furnace 2, and enters the interior of the collar 8 through each air inlet 14. It is sent from the middle of the grate 7, which improves the combustion effect. The air-cooling fan 52 sends cold air into the space between the combustion furnace 2 and the furnace chamber 15 to cool the combustion furnace 2. The heated air is introduced into the outlet channel 3 through the return air pipe 9 to recover heat.

[0029] It is worth noting that the motor 56 disclosed in the above embodiments can be a GH32-200-200S geared motor, the booster fan 59 can be an FMT series vertical centrifugal fan, the air supply fan 6 can be a DRAD249 fan, the air-cooled fan 52 can be a 4-72A centrifugal fan, and the control switch group 10 has corresponding switches for controlling the operation of the motor 56, booster fan 59, air supply fan 6 and air-cooled fan 52.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A biomass pellet burner, characterized by, The biomass particle combustion machine comprises: The upper surface of the base (1) is fixedly connected with a combustion furnace (2), the inside of the combustion furnace (2) is provided with a hearth (15), the left side of the outer arc surface of the combustion furnace (2) is provided with a guide-out channel (3) in communication with the hearth (15), the upper end of the guide-out channel (3) is provided with back-to-back symmetrical return air pipes (9) in communication with the outer arc surface of the combustion furnace (2), the lower end of the inside of the combustion furnace (2) is fixedly connected with a grate (7), the right end of the outer arc surface of the combustion furnace (2) is provided with an air inlet, the air inlet is located at the lower end of the grate (7), the edge of the top wall of the combustion furnace (2) and the edge of the lower surface of the grate (7) are fixedly connected with a sleeve ring (8), the outer arc surface of the sleeve ring (8) is provided with uniformly distributed air inlets (14), the diameter of the air inlets (14) gradually decreases counterclockwise from the air inlet position, and the upper surface of the base (1) is fixedly connected with a feeding box (4); The feeding mechanism (5) comprises a discharging inclined pipe (51) and a booster fan (59), the left side inner wall of the feeding box (4) is fixedly connected with the discharging inclined pipe (51), the lower end of the discharging inclined pipe (51) is in communication with the hearth (15), and the upper end of the discharging inclined pipe (51) is fixedly connected with the booster fan (59).

2. The biomass pellet combustion machine according to claim 1, wherein The biomass particle combustion machine further comprises a control switch group (10), the control switch group (10) is arranged on the right side of the base (1), the input end of the control switch group (10) is electrically connected with an external power supply, and the input end of the booster fan (59) is electrically connected with the output end of the control switch group (10).

3. A biomass pellet burner according to claim 2, wherein The feeding mechanism (5) further comprises a bolt feeding shaft (53), a feeding pipe (54), a motor base (55), a motor (56), a chain (57) and a sprocket wheel one (58), the middle part of the discharging inclined pipe (51) is fixedly connected with the feeding pipe (54), the inside of the feeding pipe (54) is rotatably connected with the bolt feeding shaft (53), the front side of the feeding pipe (54) is fixedly connected with the motor base (55), the upper end of the motor base (55) is fixedly connected with the motor (56), the right side of the output shaft of the motor (56) is fixedly sleeved with the sprocket wheel one (58), the right end of the bolt feeding shaft (53) is fixedly sleeved with a sprocket wheel two, the sprocket wheel one (58) and the sprocket wheel two are rotatably connected through the chain (57), and the input end of the motor (56) is electrically connected with the output end of the control switch group (10).

4. The biomass pellet burner according to claim 2, wherein The feeding mechanism (5) further comprises an air cooling fan (52), the left side inner wall of the feeding box (4) is fixedly connected with the air cooling fan (52), the air cooling fan (52) is located at the lower end of the discharging inclined pipe (51), the air outlet of the air cooling fan (52) is in communication with the combustion furnace (2) through a connecting pipe, and the input end of the air cooling fan (52) is electrically connected with the output end of the control switch group (10).

5. The biomass pellet burner according to claim 1, wherein The right end of the air inlet is fixedly connected with a blowing fan (6), and the input end of the blowing fan (6) is electrically connected with the output end of the control switch group (10).

6. The biomass pellet burner according to claim 1, wherein The lower end of the outer arc surface of the combustion furnace (2) is provided with an ash discharge port one (12) and an ash discharge port two (13), the ash discharge port one (12) is located at the lower end of the grate (7), and the ash discharge port two (13) is located at the upper end of the grate (7).

7. The biomass pellet burner according to claim 1, wherein The lower surface of the base (1) is fixedly connected with wheels (11) which are distributed in a quadrilateral symmetry.

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