A stable and efficient biomass combustion furnace

Abstract

The application discloses a stable and efficient biomass combustion furnace and particularly relates to the field of combustion furnaces, which comprises a combustion machine main body, a cloth distribution box is arranged at the upper end of the combustion machine main body, a grate pipe is fixedly arranged at the lower end in the combustion machine main body, a material turning claw is slidably arranged between two adjacent grate pipes, the bottom end of the material turning claw is rotatably arranged on a moving plate, L-shaped connecting rods are fixedly arranged at the two ends of the moving plate, and one end of the L-shaped connecting rod is slidably arranged in a hydraulic cylinder. The fuel is turned by the movement of the turning claw at regular time intervals, the turning claw is driven to rotate by the gear during the movement, the turning claw moves and rotates simultaneously, the fuel combustion is more sufficient, and the fuel combustion efficiency is improved; the compressed air bag is used to extrude the sealing piston in the piston cylinder, the sealing piston drives the U-shaped rod to move up and down, the rocker plate is lifted, and the ash is conveniently discharged.

Description

Technical Field

[0001] This invention relates to the field of combustion furnace technology, specifically to a stable and efficient biomass combustion furnace. Background Technology

[0002] Biomass fuel refers to fuel produced by burning biomass materials, primarily agricultural and forestry waste such as straw, rice husks, sawdust, bagasse, and corn cobs, which is distinct from fossil fuels. Biomass fuel originates directly or indirectly from the photosynthesis of green plants and can be converted into conventional solid and gaseous fuels. It is a renewable energy source and a new type of clean fuel. Biomass fuel is an important renewable energy resource, characterized by its diverse types and wide distribution. In today's increasingly energy-constrained environment, it is attracting growing attention. Furthermore, biomass has low sulfur and ash content, resulting in minimal environmental pollution during its utilization and not increasing the total carbon cycle in nature. The use of biomass energy requires burning agricultural straw and other similar materials in a combustion furnace to provide energy.

[0003] For example, Chinese patent application CN105020884A, entitled "A Biomass Combustion Furnace," discloses a biomass combustion furnace. This furnace includes an outer shell (equivalent to a furnace body), a chimney (equivalent to a flue gas exhaust duct) above the outer shell, a combustion chamber inside the outer shell, and a heat exchanger above the combustion chamber. The energy from the combustion of biomass fuel is transferred to the heat exchanger and utilized. However, existing biomass combustion furnaces have low biomass fuel utilization efficiency during use, and fuel tends to accumulate at the bottom of the furnace body, resulting in low combustion efficiency and hindering widespread adoption and promotion. Summary of the Invention

[0004] The purpose of this invention is to provide a stable and efficient biomass combustion furnace to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a stable and efficient biomass combustion furnace, comprising a burner body, a material distribution box provided at the upper end of the burner body, a furnace bar tube fixedly provided at the lower end of the burner body, a turning claw slidably provided between two adjacent furnace bar tubes, the bottom end of each turning claw being rotatably mounted on a moving plate, an L-shaped connecting rod fixedly provided at both ends of the moving plate, one end of each L-shaped connecting rod being slidably mounted in a hydraulic cylinder, an upper air inlet and a lower air inlet provided on the side wall of the burner body, a first oxygen-aiding fan and a second oxygen-aiding fan respectively provided at the upper air inlet and the lower air inlet.

[0006] In a preferred embodiment, the upper end of the burner body is provided with a feed inlet, the upper end of which is located at the lower end of the feed auger outlet. The side wall of the burner body is provided with an observation port and a fuel inlet. The feed auger is used for feeding, which facilitates the addition of materials. The observation port and fuel inlet facilitate the observation of fuel combustion and the addition of fuel.

[0007] In a preferred embodiment, a feeding motor is fixedly installed at the upper end of the feeding box. A reducer is fixedly connected to the output shaft of the feeding motor. The output end of the reducer passes through the top side wall of the feeding box and is fixedly connected to a rotating shaft located inside the feeding box. A feeding plate is fixedly installed at the bottom end of the rotating shaft, and multiple feeding holes are evenly spaced on the feeding plate. A conical plate is installed inside the feeding box, and a spiral feeding auger is fixedly installed on the outer side wall of the rotating shaft. The feeding motor can drive the feeding plate to rotate, and the material is evenly spread into the burner body through the feeding holes on the feeding plate, so that the feeding is uniform and the combustion effect is improved.

[0008] In a preferred embodiment, a first sealed bearing is installed at the middle of the bottom end of the movable plate. A rotating shaft is rotatably mounted at the first sealed bearing. A first gear is fixedly mounted at the bottom end of the rotating shaft. A toothed plate is meshed on one side of the first gear. One end of the toothed plate is fixedly mounted on the inner side wall of the burner body. A second gear is fixedly mounted at the upper end of the rotating shaft. A third gear is sequentially meshed at both ends of the second gear. The bottom end of the tipping claw is fixedly mounted at the middle position of the third gear. A second sealed bearing is provided at the contact position between the tipping claw and the movable plate. When the movable plate moves, it can drive the first gear to rotate under the action of the toothed plate. When the first gear rotates, it can drive the rotating shaft and the second gear to rotate. The rotation of the second gear can drive multiple third gears to rotate, so that the tipping claw moves and rotates at the same time, which can flip and compress the fuel, thereby improving the combustion efficiency of the fuel.

[0009] In a preferred embodiment, the outer wall of the turning claw is provided with evenly spaced extrusion protrusions, and the extrusion protrusions on two adjacent turning claws are staggered. When the turning claw rotates, the extrusion protrusions come closer to each other and squeeze each other, which can crush the fuel and thus improve the combustion efficiency.

[0010] In a preferred embodiment, a movable plug is slidably disposed inside the hydraulic cylinder. One end of the hydraulic cylinder is connected to a hydraulic pump station at the outer end of the burner body via a connecting pipe. A first return spring is fixedly disposed at one end of the movable plug. One end of the L-shaped connecting rod is connected to the outer wall of the moving plate, and a sealing gasket is disposed at the connection between the L-shaped connecting rod and the side wall of the hydraulic cylinder. The hydraulic pump station can pump hydraulic oil or hydraulic water into the hydraulic cylinder to squeeze the movable plug, causing the movable plug to drive the L-shaped connecting rod and the moving plate to move. The first return spring can reset the movable plug and the moving plate.

[0011] In a preferred embodiment, one end of the hydraulic cylinder is provided with an exhaust port and an air inlet. The air inlet is connected to the outer end of the burner body through an air inlet pipe. The exhaust port is connected to the air inlet of the compression bladder. The air outlet of the compression bladder is connected to a piston cylinder. A sealing piston is provided inside the piston cylinder. A U-shaped rod is fixedly connected to the bottom end of the sealing piston. One end of the U-shaped rod passes through the bottom side wall of the burner body and is hinged to the bottom end of the rocker plate. One end of the rocker plate is hinged to the inner side of the ash outlet. When the movable plug inside the hydraulic cylinder moves, it can inflate the compression bladder, causing the compression bladder to expand. When ash needs to be discharged, the gas in the compression bladder is used to squeeze the sealing piston, causing the sealing piston to drive the U-shaped rod to move, causing one end of the rocker plate to tilt up, facilitating the discharge of ash.

[0012] In a preferred embodiment, one-way valves are provided on the air inlet, the air outlet, and the pipe between the compressed air bag and the piston cylinder, and a pressure relief valve is installed on the pipe between the compressed air bag and the piston cylinder. The one-way valve facilitates the control of the gas flow direction, and the pressure relief valve can control the gas in the compressed air bag.

[0013] In a preferred embodiment, a protective cover is provided on the outside of the compressed air bag, and a second return spring is fixedly provided at the bottom end of the sealing piston. The protective cover can protect the compressed air bag, and the second return spring facilitates the reset of the sealing piston.

[0014] In a preferred embodiment, the first oxygen-supporting fan is located between the furnace bar tube and the observation port, the second oxygen-supporting fan is located below the furnace bar tube, the inner wall of the burner body is provided with insulation cotton, and the inner side of the insulation cotton is provided with refractory bricks.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. This invention is equipped with a material feeding box, which uses a material feeding motor to drive the rotation of the spiral feeding auger and the material feeding plate. The spiral feeding auger facilitates the conveying of materials, while the material feeding plate can evenly distribute the materials onto the burner body, making the feeding uniform. In addition, two oxygen-aiding fans are provided to supply oxygen for fuel combustion and improve the fuel combustion efficiency.

[0017] 2. This invention features a turning claw that periodically turns the fuel over by moving the claw. During the movement of the turning claw, it can be driven to rotate by gears, so that the turning claw moves and rotates at the same time. The extrusion protrusions on the turning claw crush the fuel, making the fuel burn more completely and improving the fuel combustion efficiency.

[0018] 3. During the movement of the moving plate, the invention can inflate the compressed air bag. After a period of use, it is necessary to discharge the ash after fuel combustion. The compressed air bag can be used to squeeze the sealed piston inside the piston cylinder, so that the sealed piston drives the U-shaped rod to move up and down, thereby raising the rocker plate. The rocker plate tilts the ash towards the ash outlet, so that the ash is discharged. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the structure of the main view of the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the main body of the burner of the present invention;

[0023] Figure 3 This is the present invention. Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the moving structure of the moving plate of the present invention;

[0025] Figure 5 This is the present invention. Figure 2 Enlarged schematic diagram of the structure at point B;

[0026] Figure 6 This is a schematic diagram of the internal structure of the movable plate of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the compression airbag and piston cylinder of the present invention;

[0028] In the diagram: 1. Burner body; 2. Charging box; 3. Furnace bar tube; 4. Tilting claw; 5. Moving plate; 6. L-shaped connecting rod; 7. Hydraulic cylinder; 8. First oxygen-aiding fan; 9. Second oxygen-aiding fan; 10. Feed inlet; 11. Feeding auger; 12. Charging motor; 13. Rotating shaft; 14. Charging plate; 15. Conical plate; 16. Spiral feeding auger; 17. Observation port; 18. Fuel inlet; 19. Reducer; 20. First sealed bearing; 21. Rotating shaft; 22. First gear; 23. Gear plate; 24. Second gear; 25. Third gear; 26. Second sealed bearing; 27. Extrusion protrusion; 28. Movable plug; 29. ​​Hydraulic pump station; 30. First return spring; 31. Exhaust port; 32. Air inlet; 33. Compression air bag; 34. Piston cylinder; 35. Sealed piston; 36. U-shaped rod; 37. Rocker plate; 38. Ash outlet; 39. Check valve; 40. Pressure relief valve; 41. Protective cover; 42. Second return spring; 43. Insulation cotton; 44. Refractory brick. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-6This invention provides a stable and efficient biomass combustion furnace, comprising a burner body 1, a material distribution box 2 at the upper end of the burner body 1, and a furnace bar tube 3 fixedly disposed at the lower end of the burner body 1. Tilting claws 4 are slidably disposed between two adjacent furnace bar tubes 3, and the bottom ends of the tilting claws 4 are rotatably mounted on a moving plate 5. A material distribution motor 12 is fixedly installed at the upper end of the material distribution box 2, and a reducer 19 is fixedly connected to the output shaft of the material distribution motor 12. The output end of the reducer 19 passes through the top side wall of the material distribution box 2 and is fixedly... A rotating shaft 13 is fixedly connected to the inside of the material distribution box 2. A material distribution plate 14 is fixedly installed at the bottom end of the rotating shaft 13, and a plurality of material distribution holes are evenly spaced on the material distribution plate 14. A conical plate 15 is installed inside the material distribution box 2. A spiral feeding auger 16 is fixedly installed on the outer wall of the rotating shaft 13. L-shaped connecting rods 6 are fixedly installed at both ends of the moving plate 5. One end of each L-shaped connecting rod 6 is slidably installed in a hydraulic cylinder 7. An upper air inlet and a lower air inlet are opened on the side wall of the burner body 1. The upper air inlet... A first oxygen-aiding fan 8 and a second oxygen-aiding fan 9 are respectively installed at the lower air inlet. A first sealed bearing 20 is installed at the middle of the bottom end of the movable plate 5. A rotating shaft 21 is rotatably installed at the first sealed bearing 20. A first gear 22 is fixedly installed at the bottom end of the rotating shaft 21. A toothed plate 23 is meshed on one side of the first gear 22. One end of the toothed plate 23 is fixedly installed on the inner side wall of the burner body 1. A second gear 24 is fixedly installed at the upper end of the rotating shaft 21. A third gear 25 is sequentially meshed at both ends of the second gear 24. The bottom end of the material-turning claw 4 is fixedly located in the middle position of the third gear 25, and a second sealed bearing 26 is provided at the contact position between the material-turning claw 4 and the moving plate 5. A movable plug 28 is slidably provided inside the hydraulic cylinder 7. One end of the hydraulic cylinder 7 is connected to the hydraulic pump station 29 at the outer end of the burner body 1 through a connecting pipe. A first return spring 30 is fixedly provided at one end of the movable plug 28. One end of the L-shaped connecting rod 6 is connected to the outer wall of the moving plate 5, and a sealing gasket is provided at the connection between the L-shaped connecting rod 6 and the side wall of the hydraulic cylinder 7.

[0031] In practical use, the hydraulic pump station 29 fills the hydraulic cylinder 7 with hydraulic oil or hydraulic water, causing the movable plug 28 in the hydraulic cylinder 7 to move the L-shaped connecting rod 6. This causes the L-shaped connecting rod 6 to move the moving plate 5, which in turn moves the tipping claw 4. The tipping claw 4 can flip the fuel, allowing the air blown in by the oxygen-assisted blower to better contact the fuel, thus improving the fuel combustion efficiency. Moreover, when the moving plate 5 moves, the toothed plate 23 causes the first gear 22 to rotate. When the first gear 22 rotates, it drives the rotating shaft 21 and the second gear 24 to rotate. Since the second gear 24 meshes with the third gear 25, it can drive multiple tipping claws 4 to rotate. Thus, the tipping claws 4 move and rotate at the same time, which not only flips the fuel but also crushes and grinds it, resulting in better fuel combustion. During feeding, the feeding motor 12 drives the feeding plate 14 to rotate, and the material is evenly spread into the burner body 1 through the feeding holes on the feeding plate 14.

[0032] In a preferred embodiment, the upper end of the burner body 1 is provided with a feed inlet 10, the upper end of which is located below the discharge port of the feeding auger 11. The side wall of the burner body 1 is provided with a viewing port 17 and a fuel inlet 18. In actual use, the fuel is fed through the feed inlet 10, which is located below the discharge port of the feeding auger 11, so as to facilitate automatic feeding by the feeding auger 11. The viewing port 17 is provided to facilitate the observation of the combustion status of the fuel, and the fuel inlet 18 is provided to facilitate the addition of fuel.

[0033] In a preferred embodiment, the outer wall of the turning claw 4 is provided with evenly spaced extrusion protrusions 27, and the extrusion protrusions 27 on two adjacent turning claws 4 are staggered. The extrusion protrusions 27 facilitate the extrusion and crushing of fuel when the turning claw 4 rotates.

[0034] In a preferred embodiment, the first oxygen-supporting fan 8 is located between the furnace bar tube 3 and the observation port 17, the second oxygen-supporting fan 9 is located below the furnace bar tube 3, the inner wall of the burner body 1 is provided with insulation cotton 43, and the inner side of the insulation cotton 43 is provided with refractory bricks 44.

[0035] The working principle of this invention is as follows: Material is placed into the feeding auger 11, which transports the material to the feed inlet 10, allowing it to enter the material distribution box 2. The material distribution motor 12 is driven, which in turn drives the rotating shaft 13 and the material distribution plate 14 to rotate. The material in the material distribution box 2 is piled on the material distribution plate 14. The rotation of the material distribution plate 14 ensures that the material enters the burner body 1 evenly through the material distribution holes, resulting in uniform feeding. Fuel is added to the burner body 1 through the fuel inlet 18. After the fuel is ignited, the first oxygen-aiding fan 8 and the second oxygen-aiding fan 9 are turned on. These fans introduce air into the burner body 1, making the fuel combustion more complete. During fuel combustion, the hydraulic pump station 29 is turned on, which then pumps air into the hydraulic cylinder. Hydraulic oil or hydraulic water is introduced into 7, which compresses the movable plug 28, causing it to move the L-shaped connecting rod 6 and the moving plate 5. When the moving plate 5 moves, it can move the tipping claw 4, causing the tipping claw 4 to flip the fuel. When the moving plate 5 moves, the first gear 22 rotates, which causes the rotating shaft 21 to rotate the second gear 24. When the second gear 24 rotates, it causes multiple third gears 25 to rotate, which in turn drive the tipping claw 4 to rotate. The tipping claw 4 is provided with staggered extrusion protrusions 27. The rotation of the tipping claw 4 can crush the fuel. Then, the first oxygen-aiding blower 8 and the second oxygen-aiding blower 9 blow air onto the fuel, making the crushed fuel burn more completely and improving the fuel combustion efficiency.

[0036] Please see Figure 1 , Figure 4 and Figure 7 A stable and efficient biomass combustion furnace is provided. One end of the hydraulic cylinder 7 is provided with an exhaust port 31 and an air inlet 32. The air inlet 32 ​​is connected to the outer end of the burner body 1 through an air inlet pipe. The exhaust port 31 is connected to the air inlet end of the compression bladder 33. The air outlet end of the compression bladder 33 is connected to a piston cylinder 34. A sealing piston 35 is provided inside the piston cylinder 34. A U-shaped rod 36 is fixedly connected to the bottom end of the sealing piston 35. One end of the U-shaped rod 36 passes through the bottom side wall of the burner body 1 and is hinged to the bottom end of the rocker plate 37. One end of the rocker plate 37 is hinged to the inner side of the ash outlet 38.

[0037] In a preferred embodiment, a one-way valve 39 is provided on the air inlet 32, the exhaust outlet 31, and the pipe between the compressed air bag 33 and the piston cylinder 34. A pressure relief valve 40 is installed on the pipe between the compressed air bag 33 and the piston cylinder 34. The one-way valve 39 facilitates the control of the gas flow direction, and the pressure relief valve 40 can control the gas in the compressed air bag 33.

[0038] In a preferred embodiment, a protective cover 41 is provided on the outside of the compressed air bag 33, and a second return spring 42 is fixedly provided at the bottom end of the sealing piston 35. The protective cover 41 can protect the compressed air bag 33, and the second return spring 42 facilitates the reset of the sealing piston 35.

[0039] The working principle of this invention: During operation, when the moving plate 5 is in use, the movable plug 28 inside the hydraulic cylinder 7 moves back and forth continuously. As the movable plug 28 moves, it continuously discharges the internal gas into the compression bladder 33, causing the compression bladder 33 to continuously expand. The ash from fuel combustion on the grate tube 3 falls onto the rocker plate 37 inside the burner body 1. After a period of use, the ash needs to be discharged. To discharge the ash, the cover plate at the ash outlet 38 is opened, and the ash is discharged through the ash outlet 38. Then, the pressure relief valve 40 between the compression bladder 33 and the piston cylinder 34 is opened, and the pressure... The gas in the air bladder 33 is transported to the piston cylinder 34 through the pipe, causing the sealing piston 35 to move upward, which in turn drives the U-shaped rod 36 to move upward, causing one end of the rocker plate 37 to tilt up and guide the ash on the rocker plate 37 to the ash outlet 38 for easy ash discharge. An air outlet can be opened on the piston cylinder 34. After the ash is discharged, the air outlet is opened to discharge the gas in the piston cylinder 34. The sealing piston 35 is reset under the action of the second reset spring 42, causing the U-shaped rod 36 to drive the rocker plate 37 to reset. The cover plate at the ash outlet 38 can then be closed for continued use.

[0040] This invention features a feeding box with a feeding motor driving the rotation of a spiral feed auger and a feeding plate. The spiral feed auger facilitates material transport, while the feeding plate evenly distributes the material onto the burner body, ensuring uniform feeding. Two oxygen-aiding fans supply oxygen for fuel combustion, improving combustion efficiency. The invention also incorporates a turning claw that periodically turns the fuel. The turning claw's rotation, driven by gears, allows it to move and rotate simultaneously, crushing the fuel with its compression protrusions for more complete combustion and improved efficiency. Furthermore, the moving plate inflates the compression bladder. After a period of use, the ash from fuel combustion needs to be discharged. The compression bladder compresses the sealed piston inside the piston cylinder, causing it to move a U-shaped rod, which in turn raises a tilting plate. This tilting plate tilts the ash towards the ash outlet for discharge.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A stable and efficient biomass combustion furnace comprising a combustion engine main body (1), characterized in that: The upper end of the combustion machine body (1) is provided with a cloth box (2), the lower end inside the combustion machine body (1) is fixedly provided with a furnace strip pipe (3), slidingly provided with a material turning claw (4) between two adjacent furnace strip pipes (3), the bottom end of the material turning claw (4) is rotatably arranged on a moving plate (5), the both ends of the moving plate (5) are fixedly provided with L-shaped connecting rods (6), one end of the L-shaped connecting rod (6) is slidingly arranged in a hydraulic cylinder (7), the side wall of the combustion machine body (1) is provided with an upper air inlet and a lower air inlet, the upper air inlet and the lower air inlet are respectively provided with a first oxygen assisting fan (8) and a second oxygen assisting fan (9). The bottom end of the moving plate (5) is provided with a first sealing bearing (20) at the middle position, the first sealing bearing (20) is rotatably arranged on a rotating shaft (21), the bottom end of the rotating shaft (21) is fixedly provided with a first gear (22), the first gear (22) is meshingly provided with a toothed plate (23) on one side, one end of the toothed plate (23) is fixedly arranged on the inner side wall of the combustion machine body (1), the upper end of the rotating shaft (21) is fixedly provided with a second gear (24), the both ends of the second gear (24) are sequentially meshed with a third gear (25), the bottom end of the material turning claw (4) is fixedly arranged at the middle position of the third gear (25), and the contact position of the material turning claw (4) and the moving plate (5) is provided with a second sealing bearing (26). The outer side wall of the material turning claw (4) is uniformly provided with extrusion protrusions (27) at intervals, and the extrusion protrusions (27) on the adjacent two material turning claws (4) are staggered. One end of the hydraulic cylinder (7) is provided with an exhaust port (31) and an air inlet (32), the air inlet (32) is connected to the outer end of the combustion machine body (1) through an air inlet pipeline, the exhaust port (31) is connected to the air inlet end of a compressed air bag (33), the air outlet end of the compressed air bag (33) is connected with a piston cylinder (34), the inside of the piston cylinder (34) is provided with a sealing piston (35), the bottom end of the sealing piston (35) is fixedly connected with a U-shaped rod (36), one end of the U-shaped rod (36) penetrates through the bottom end side wall of the combustion machine body (1), and is hingedly arranged at the bottom end of a hinged plate (37), one end of the hinged plate (37) is hingedly arranged at the inner side of an ash outlet (38).

2. The stable and efficient biomass combustion furnace according to claim 1, characterized in that: The upper end of the combustion machine body (1) is provided with a feeding port (10), the upper end of the feeding port (10) is arranged at the lower end of the discharge port of a feeding auger (11), the side wall of the combustion machine body (1) is provided with a fire viewing port (17) and a fuel inlet (18).

3. The stable and efficient biomass combustion furnace according to claim 1, characterized in that: The upper end of the cloth box (2) is fixedly installed with a cloth motor (12), the output shaft of the cloth motor (12) is fixedly connected with a speed reducer (19), the output end of the speed reducer (19) penetrates through the top end side wall of the cloth box (2) and is fixedly connected with a rotating shaft (13) arranged inside the cloth box (2), the bottom end of the rotating shaft (13) is fixedly provided with a cloth plate (14), a plurality of cloth holes are uniformly arranged on the cloth plate (14), a conical plate (15) is arranged inside the cloth box (2), and a spiral feeding auger (16) is fixedly arranged on the outer side wall of the rotating shaft (13).

4. The stable and efficient biomass combustion furnace according to claim 1, characterized in that: The inside of the hydraulic cylinder (7) is slidably provided with a movable plug (28), one end of the hydraulic cylinder (7) is connected with a hydraulic pump station (29) arranged at the outer end of the combustion machine body (1) through a connecting pipeline, one end of the movable plug (28) is fixedly provided with a first reset spring (30), one end of the L-shaped connecting rod (6) is connected with the outer side wall of the moving plate (5), and a sealing washer is arranged at the connection between the L-shaped connecting rod (6) and the side wall of the hydraulic cylinder (7).

5. The stable and efficient biomass combustion furnace according to claim 1, characterized in that: The pipeline between the air inlet (32), the air outlet (31) and the compression air bag (33) and the piston cylinder (34) is provided with a one-way valve (39), and the pipeline between the compression air bag (33) and the piston cylinder (34) is provided with a pressure relief valve (40).

6. The stable and efficient biomass combustion furnace according to claim 1, characterized in that: The outer side of the compression air bag (33) is provided with a protective cover (41), and the bottom end of the sealing piston (35) is fixedly provided with a second reset spring (42).

7. The stable and efficient biomass combustion furnace according to claim 2, characterized in that: The first oxygen-assisted fan (8) is located between the furnace bar pipe (3) and the fire observation hole (17), the second oxygen-assisted fan (9) is located below the furnace bar pipe (3), the inner side wall of the combustion machine body (1) is provided with heat preservation cotton (43), and the inner side of the heat preservation cotton (43) is provided with refractory bricks (44).

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