A biomass stove with internal air supply and automatic slag cleaning and a method of using the same

Abstract

The present invention belongs to the technical field of biomass stoves, and in particular, is a biomass stove with internal air supply and automatic slag cleaning and a method for using the same. In view of the problems of the existing manual ash cleaning method that both affects the continuous combustion of biomass and reduces the combustion efficiency, and the disadvantage that air supply from the furnace wall to the furnace will cause serious corrosion of the wall near the air supply port, the following scheme is proposed, including a furnace body, a furnace is provided in the furnace body, a base is fixed at the bottom of the furnace body, a motor box is fixed on one side of the furnace body, a silo connected to the furnace is provided in the motor box, a spiral feeder is rotatably provided in the silo, and is used to transport the raw materials in the silo to the furnace. The present invention significantly enhances the turbulence and mixing of the combustible gas in the furnace through internal rotating air supply, thereby improving the combustion efficiency and reducing the corrosion of the furnace wall. In addition, when the circular grate rotates, the fuel moves toward the furnace wall under the action of centrifugal force.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass stoves, and in particular to a biomass stove with internal air supply and automatic slag cleaning and a use method thereof. Background Art

[0002] The effective use of biomass energy can also effectively alleviate the problem of fossil energy shortage. As a major agricultural country, my country is rich in biomass resources. Every year, there are a large number of idle crop wastes in rural areas. These wastes are compressed to form pellet fuels, which have the significant advantages of simple processing technology and sufficient raw material supply. Burning these fuels in small biomass stoves can save a lot of capital investment, reduce greenhouse gas emissions, and effectively promote sustainable development.

[0003] However, current small biomass stoves generally have the problem of easy corrosion of the furnace wall and easy accumulation of dust on the grate. Common biomass stoves on the market usually have the following two characteristics: First, manual ash cleaning, including flip type and pull-out type, although these two methods are suitable for the combustion of honeycomb coal, but for biomass shaped fuel, it will seriously affect its continuous combustion effect, and if the ash is not cleaned in time, it will cause ash accumulation in the furnace, thus affecting the combustion efficiency; second, the design of supplying air from the furnace wall to the furnace, this method often causes serious corrosion of the wall near the air supply port, thus affecting the long-term use of the stove.

[0004] In view of the above problems, the present invention document proposes a biomass stove with internal air supply and automatic slag cleaning and a method of using the same. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing manual ash cleaning that not only affects the continuous combustion of biomass but also affects the combustion efficiency, and that air supply from the furnace wall into the furnace will cause serious corrosion of the wall near the air supply port, and to propose a biomass stove with internal air supply and automatic slag cleaning and a method of using the same.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A biomass stove with internal air supply and automatic slag cleaning, comprising a stove body, a furnace chamber is arranged in the stove body, a base is fixed at the bottom of the stove body, a motor box is fixed at one side of the stove body, a silo connected to the furnace chamber is arranged in the motor box, a screw feeder is rotatably arranged in the silo for conveying raw materials from the silo to the furnace chamber, and the screw feeder can be relatively closed with the silo to prevent combustible gas and flame generated by combustion from spreading into the silo;

[0008] It also includes a circular grate, a circular hole is provided at the bottom of the furnace body, the circular grate is rotatably arranged in the circular hole, an air supply duct is provided in the base, and the top of the air supply duct passes through the circular grate, and an arc-shaped scraper plate is provided on the top of the circular grate for guiding the raw materials and ash on the edge of the inner wall of the furnace to the circular grate;

[0009] It also includes an ash shaking plate arranged in the base for discharging ash to the outside;

[0010] The air supply structure is arranged on the top of the circular grate and is used to supply air into the furnace from the inside;

[0011] The combustion structure is arranged in the circular grate and is used to fully burn the raw materials entering the furnace;

[0012] The scraping structure is arranged inside the circular grate and is used to guide the raw materials and ash accumulated on the edge of the furnace to the circular grate;

[0013] The discharge structure is arranged in the base and is used to drive the ash shaking plate to rotate back and forth, and automatically discharge the ash falling on the ash shaking plate to the outside.

[0014] In one possible design, the air supply structure includes a combustion-supporting air duct fixed on the top of the circular grate, and the top of the air supply duct is connected to the combustion-supporting air duct, the outer wall of the combustion-supporting air duct is provided with a plurality of second air inlet holes and a first air inlet hole, and the second air inlet hole is located above the first air inlet hole; the outside wind enters the combustion-supporting air duct through the air supply duct, and the rotation characteristics of the combustion-supporting air duct can enhance the turbulence of the combustible gas in the furnace, and can sweep the air to the furnace wall, which helps to improve the combustion efficiency while removing the combustible gas attached to the furnace wall, and the plurality of first air inlet holes ensure that the primary combustion area can be fully burned, the first air inlet hole at the bottom is used to cooperate with the rotation of the circular grate to mix the fuel evenly, and the other first air inlet holes are used to supply the required air for the primary combustion to ensure that the primary combustion is fully carried out. The characteristic of biomass fuel is that it has a large amount of volatile matter. In view of this feature, a plurality of second air inlet holes are provided, and sufficient oxygen is provided to the secondary combustion area through the second air inlet holes to ensure the full combustion of volatile gases.

[0015] In a possible design, the combustion structure includes a rotating bracket fixed in the circular grate, the circular grate is provided with a plurality of ash leakage holes for filtering the ash on the circular grate, the motor box is provided with a driving bin, the driving bin is fixed with a driving motor, the output shaft of the driving motor is fixed with a worm, one side of the worm is meshed with a worm wheel, and the driving shaft of the screw feeder rotates and extends into the driving bin and is fixedly connected to the worm wheel, one side of the worm wheel is fixed with a first gear, and the first gear is fixedly sleeved on the outer wall of the driving shaft of the screw feeder, and the driving bin is rotatably connected with a rotating shaft. The cam is an angular channel formed between a first and a second camshaft, the second cam being coupled to the first gear and a second camshaft that are coupled to the first gear and a camshaft that are coupled to the first gear and a camshaft that are coupled to the first gear and a camshaft that are coupled to the first gear and a camshaft that are coupled to the first gear and a camshaft that are coupled to the first gear and a camshaft that are coupled to the first gear and a camshaft. The cooperation of the body drives the sliding rod to reciprocate, and the sliding rod is rotatably connected to the end of the sliding rod away from the frame body, and a connecting rod is rotatably connected to the bottom of the rotating bracket. A connecting shaft is fixed to the bottom of the connecting shaft, and a second rotating disk is fixed to the bottom end of the connecting shaft. A second pin is fixed on the side of the bottom of the second rotating disk that deviates from the center of the circle, and the second pin is rotatably connected to the top of the connecting rod, and the sliding rod drives the second rotating disk and the rotating bracket to rotate through the connecting rod and the second pin; the worm is driven to rotate by the driving motor, and the cooperation of the worm and the worm wheel drives the screw feeder to rotate, and the screw feeder puts the raw materials into the furnace. The screw feeder can also make the silo relatively closed to prevent combustion. The combustible gas and flame generated by combustion diffuse into the silo, and the worm gear drives the rotating shaft and the first end wheel to rotate through the cooperation of the first gear and the second gear, the first end wheel drives the first turntable to rotate through the second end wheel, the first turntable drives the sliding rod to slide back and forth through the cooperation of the first pin shaft and the frame, the sliding rod drives the rotating bracket and the circular grate to rotate through the cooperation of the connecting rod, the second pin shaft and the second turntable, the circular grate drives the raw materials thereon to rotate, and the raw materials move toward the edge of the furnace under the action of centrifugal force, and the ash after combustion falls on the ash baffle through the ash leakage hole, so as to prevent the ash from accumulating in the furnace and affecting the combustion of the raw materials.

[0016] In a possible design, the scraper structure includes a guide rod fixed on the top of the circular grate, and an arc-shaped scraper plate that fits the inner wall of the furnace is slidably sleeved on the outer wall of the guide rod, which is used to guide the raw materials and ash accumulated on the edge of the inner wall of the furnace to the circular grate. A reciprocating screw rod rotates through the circular grate, and the top thread of the reciprocating screw rod extends into the arc-shaped scraper plate, which is used to drive the arc-shaped scraper plate to move up and down and intermittently guide the raw materials. The bottom end of the reciprocating screw rod is fixed with a third gear located below the circular grate, and the bottom of the furnace body is fixed with an arc-shaped rack located in the base, and the arc-shaped rack is intermittently meshed with the third gear; during the rotation of the circular grate, the upper After the raw materials are burned, ash is formed, which drives the reciprocating screw and the arc scraper plate to revolve when the circular grate rotates. When the third gear is engaged with the arc rack, the arc scraper plate is driven to move up a certain distance. When the third gear is disengaged from the arc rack, the arc scraper plate keeps its position unchanged. As the circular grate rotates, the arc scraper plate continuously moves up and down. While the arc scraper plate moves up and down, it rotates with the circular grate. The arc scraper plate can intermittently discharge the raw materials or ash thrown on the edge of the furnace onto the circular grate, which not only allows the raw materials to fully contact with oxygen for full combustion, but also can discharge the burned ash through the ash leakage hole onto the ash baffle plate, which is convenient for later discharge onto the ash shaking plate.

[0017] In one possible design, the discharge structure includes an ash baffle fixed in the base, and the ash baffle is located below the circular grate for carrying ash dropped from the circular grate, the top of the air supply duct passes through the ash baffle, a rectangular plate fixedly connected to the ash baffle is fixed in the base, the base forms an ash chamber through the ash baffle for storing ash, and an ash shaking plate is arranged in the ash chamber, a plurality of ash scraping plates are fixed at the bottom of the circular grate, and the ash scraping plates are used to discharge ash on the ash baffle onto the ash shaking plate.

[0018] The top of the movable seat is rotatably connected with the bottom of the ash shaking plate by a rotating shaft, and a rectangular hole is provided in the rectangular plate, and a lifting block is slidably connected in the rectangular hole, and one end of the lifting block is rotatably connected with the ash shaking plate by a rotating shaft. A spring is fixed to the bottom of the lifting block, and the bottom end of the spring is fixedly connected to the base. A vertical rod slides through the ash baffle plate, and the bottom end of the vertical rod touches the top of the lifting block. A plurality of hemispherical push blocks are fixed to the bottom of the circular grate, and the vertical rod cooperates with the hemispherical push blocks. The cooperation of the hemispherical push blocks and the spring is used to drive the vertical rod and the lifting block to move up and down reciprocatingly; when the circular grate rotates, the hemispherical push blocks are synchronously driven to rotate, and the cooperation of the plurality of hemispherical push blocks and the spring continuously drives the vertical rod and the lifting block to move up and down, and the lifting block continuously drives the ash shaking plate to rotate reciprocatingly, thereby enabling the ash slag falling on the ash shaking plate to be discharged to one side, which is convenient for the later removal of ash slag in the ash chamber, and simplifies the collection and treatment process of ash slag.

[0019] In a possible design, a material guide inclined plate is provided below the side of the ash shaking plate away from the lifting block, and the material guide inclined plate is fixed to the bottom inner wall of one side of the ash chamber to receive and guide the ash falling when the ash shaking plate rotates.

[0020] In a possible design, the inner wall of the furnace body is paved with insulation material, the furnace is wide at the bottom and narrow at the top, and the cross-section of the furnace is circular, and the inner wall of the furnace is coated with a layer of refractory cement.

[0021] In a possible design, a smoke chamber and a water chamber are provided in the furnace body, and the water chamber is located on the periphery of the smoke chamber, the smoke in the smoke chamber is used to heat the water in the water chamber, a smoke inlet pipe is fixed to the bottom inner wall of the smoke chamber, and the bottom end of the smoke inlet pipe extends into the furnace to guide the smoke into the smoke chamber, a smoke exhaust pipe connected to the smoke chamber is fixed on the top of the furnace body, a water inlet and a water outlet connected to the water chamber are provided on one side of the furnace body, and the water outlet is located below the water inlet; clean water is injected into the water chamber through the water inlet, the smoke generated during combustion in the furnace enters the smoke chamber through the smoke inlet pipe and is discharged through the smoke exhaust pipe, and the high-temperature smoke passing through the smoke chamber can heat the water in the water chamber, which is convenient for residents to use. In addition, a bracket can be provided on the top of the furnace body, and a simple stove can be erected through the bracket to meet the requirements of daily cooking.

[0022] In the present application, a method for using a biomass stove with internal air supply and automatic slag cleaning comprises the following steps:

[0023] S1. Put the biomass raw material into the silo, drive the motor to drive the worm to rotate, and the raw material is fed into the furnace through the cooperation of the worm gear and the screw feeder; the worm gear also drives the first turntable to rotate through the gear transmission, thereby driving the sliding rod to slide back and forth and the circular grate to rotate, so that the raw material moves to the edge of the furnace under the action of centrifugal force;

[0024] S2, external wind enters the combustion-supporting air duct through the air supply duct; multiple first air inlet holes ensure full primary combustion, the first air inlet hole at the bottom promotes fuel mixing, and other first air inlet holes supply air; the second air inlet hole provides oxygen for secondary combustion to ensure complete combustion of volatile gases;

[0025] S3. During the rotation of the circular grate, the burned ash falls onto the ash baffle through the ash leakage holes, and the ash scraper discharges the ash into the ash chamber; the circular grate also drives the reciprocating screw rod and the arc-shaped scraper plate to revolve, and the arc-shaped scraper plate moves up and down through the meshing of the third gear and the arc-shaped rack, intermittently discharging the raw materials or ash on the edge of the furnace back to the circular grate, ensuring that the raw materials are fully burned and the ash is discharged;

[0026] S4. When the circular grate rotates, the hemispherical push block cooperates with the spring to drive the vertical rod and the lifting block to move up and down, driving the ash shaking plate to rotate back and forth, so that the ash is discharged to one side, simplifying the ash collection and treatment;

[0027] S5. Inject clean water into the water cavity. The smoke in the furnace passes through the smoke chamber to heat the water in the water cavity for use by residents. A bracket can be set on the top of the furnace body to set up a stove to meet daily cooking needs.

[0028] Beneficial effect: In the present invention, the scraper structure comprises a guide rod fixed on the top of the circular grate, the outer wall sliding sleeve of the guide rod is provided with an arc-shaped scraper plate, a reciprocating screw rod is rotated and penetrated in the circular grate, the top thread of the reciprocating screw rod extends into the arc-shaped scraper plate, the bottom end of the reciprocating screw rod is fixed with a third gear, and the bottom of the furnace body is fixed with an arc-shaped rack located in the base; with the rotation of the circular grate, the arc-shaped scraper plate is driven to move up and down continuously through the intermittent engagement of the third gear and the arc-shaped rack, and the arc-shaped scraper plate can intermittently discharge the raw materials or ash thrown on the edge of the furnace onto the circular grate, which not only makes the raw materials fully burned, but also can discharge the burned ash and slag onto the ash baffle plate through the ash leakage hole, so as to facilitate the later discharge onto the ash shaking plate;

[0029] In the present invention, a plurality of ash scraping plates are fixed to the bottom of the circular grate, the top of the movable seat is rotatably connected to the bottom of the ash shaking plate, a lifting block is slidably connected in the rectangular hole, one end of the lifting block is rotatably connected to the ash shaking plate, a spring is fixed to the bottom of the lifting block, a vertical rod that cooperates with the top of the lifting block slides through the ash baffle plate, and a plurality of hemispherical push blocks are fixed to the bottom of the circular grate; the circular grate drives the hemispherical push blocks to rotate, and the cooperation of the plurality of hemispherical push blocks and the spring continuously drives the vertical rod and the lifting block to move up and down, and the lifting block continuously drives the ash shaking plate to rotate back and forth, so that the ash slag falling on the ash shaking plate can be discharged to one side, which is convenient for the removal of ash slag in the ash chamber in the later stage, and simplifies the ash collection and treatment process;

[0030] In the present invention, the circular grate and the combustion-supporting air duct are fixed together so that the combination can rotate around the axis together. Under the rotation of the combustion-supporting air duct, the combustion-supporting air is rotated and sent into the furnace. This air supply method can significantly enhance the turbulence of the combustible gas in the furnace and enhance the mixing of the combustible gas, thereby improving the combustion efficiency. At the same time, under the action of the sweeping air, the combustible gas attached to the inner wall of the furnace during the combustion process also falls off, reducing the corrosion of the furnace wall surface.

[0031] In the present invention, the circular grate and the screw feeder are driven by the same driving motor, so that the rotation of the circular grate and the feeding process are carried out synchronously, ensuring that the distribution of the fuel on the circular grate is more uniform; during the rotation of the circular grate, the fuel moves toward the wall of the furnace under the action of centrifugal force, and this mobile combustion method makes the fuel burn more completely; at the same time, the wider part at the lower part of the furnace can be used to store the fuel thrown to the edge by the circular grate, preventing excessive accumulation of fuel, so that the fuel is burned in a more uniform manner, and is intermittently discharged onto the circular grate at a later stage, which is convenient for removing ash.

[0032] In the present invention, rotating air supply can be carried out from the inside, which can significantly enhance the turbulence of the combustible gas in the furnace, enhance the mixing of the combustible gas, thereby improving the combustion efficiency and reducing the corrosion of the furnace wall. In addition, when the circular grate rotates, the fuel moves toward the furnace wall under the action of centrifugal force. This mobile combustion method allows the fuel to burn more completely, prevents excessive accumulation of fuel, and allows the fuel to burn in a more uniform manner. At a later stage, the fuel is intermittently discharged onto the circular grate, which is convenient for automatic ash removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the three-dimensional structure of a biomass stove with internal air supply and automatic slag cleaning provided by the present invention;

[0034] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure from a first perspective of a biomass stove with internal air supply and automatic slag cleaning provided by the present invention;

[0035] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure from a second perspective of a biomass stove with internal air supply and automatic slag cleaning provided by the present invention;

[0036] Figure 4 A partial three-dimensional cross-sectional structural schematic diagram of a furnace body and a base of a biomass furnace with internal air supply and automatic slag cleaning provided by the present invention;

[0037] Figure 5 A schematic diagram of a three-dimensional explosion structure of a base, an ash baffle, a circular grate and a combustion-supporting air duct of a biomass stove with internal air supply and automatic slag cleaning provided by the present invention;

[0038] Figure 6 A three-dimensional schematic diagram of the driving structure of a biomass stove with internal air supply and automatic slag cleaning provided by the present invention;

[0039] Figure 7 A schematic diagram of a three-dimensional exploded structure of a circular grate, a guide rod, an ash scraper and an ash baffle of a biomass stove with internal air supply and automatic slag cleaning provided by the present invention;

[0040] Figure 8A three-dimensional cross-sectional structural schematic diagram of a base, an ash baffle plate and an ash shaking plate of a biomass stove with internal air supply and automatic slag cleaning provided by the present invention;

[0041] Fig. 9 for Figure 8 Enlarged structural diagram at A in the middle.

[0042] In the figure: 1, furnace body; 2, base; 3, furnace; 4, motor box; 5, silo; 6, screw feeder; 7, circular grate; 8, ash leakage hole; 9, combustion-supporting air duct; 10, first air inlet hole; 11, second air inlet hole; 12, air supply duct; 13, ash baffle; 14, rectangular plate; 15, ash chamber; 16, drive bin; 17, drive motor; 18, worm; 19, worm wheel; 20, first gear; 21, rotating shaft; 22, second gear; 23, first end wheel; 24, rotating rod; 25, second end wheel; 26, first turntable; 27, first pin shaft; 28. Sliding rod; 29. ​​Frame; 30. Connecting rod; 31. Rotating bracket; 32. Connecting shaft; 33. Second turntable; 34. Second pin shaft; 35. Scraper plate; 36. Arc rack; 37. Guide rod; 38. Arc scraper plate; 39. Reciprocating screw; 40. Third gear; 41. Moving seat; 42. Shaking ash plate; 43. Rectangular hole; 44. Lifting block; 45. Spring; 46. Water outlet; 47. Vertical rod; 48. Hemispherical push block; 49. Smoke chamber; 50. Water cavity; 51. Smoke inlet pipe; 52. Smoke exhaust pipe; 53. Water inlet; 54. Material guide inclined plate. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Example 1: Reference Figure 1 - Figure 3 The biomass stove is used in the field of biomass stoves, and its overall structure includes a stove body 1. A furnace 3 is provided inside the stove body 1, and the furnace 3 is the main combustion area. A base 2 is fixed to the bottom of the stove body 1 for supporting the entire stove. A motor box 4 is fixed to one side of the stove body 1, and a silo 5 connected to the furnace 3 is provided in the motor box 4. The silo 5 is used to store biomass raw materials, such as wood chips, straw, etc.

[0045] Reference Figure 3 A screw feeder 6 is provided in the silo 5 for continuous and uniform transportation of the raw materials in the silo 5 to the furnace 3. In order to prevent the combustible gas and flame generated by the combustion from spreading into the silo 5, a sealing structure is provided at the joint of the screw feeder 6 and the silo 5 to ensure the relative sealing of the silo 5.

[0046] Reference Figure 3 and Figure 4 A circular hole is provided at the bottom of the furnace body 1, and a circular grate 7 is rotatably provided in the circular hole. The circular grate 7 can rotate at the bottom of the furnace 3, which is conducive to the uniform combustion of the raw materials and the discharge of ash. An air supply duct 12 is provided in the base 2, and the top of the air supply duct 12 passes through the circular grate 7 to provide the air required for combustion inside the furnace 3.

[0047] Reference Figure 3 and Figure 4 An arc-shaped scraper plate 38 is provided on the top of the circular grate 7. As the circular grate 7 rotates, the arc-shaped scraper plate 38 can guide the raw materials, ash and other impurities on the edge of the inner wall of the furnace 3 to the circular grate 7, so as to prevent these impurities from accumulating on the edge of the furnace 3 and affecting the combustion efficiency.

[0048] Reference Figure 4 A ash shaking plate 42 is also provided in the base 2, and the function of the ash shaking plate 42 is to discharge the ash and slag falling thereon to the outside. Through a specific discharge structure, the ash shaking plate 42 can be driven to rotate back and forth to realize the automatic discharge of ash and slag.

[0049] Reference Figure 3 - Figure 5 The air supply structure includes a combustion-supporting air duct 9 fixed on the top of the circular grate 7, and the top of the air supply duct 12 is connected to the combustion-supporting air duct 9. The outer wall of the combustion-supporting air duct 9 is provided with a plurality of second air inlet holes 11 and a first air inlet hole 10, and the second air inlet hole 11 is located above the first air inlet hole 10. Such a design allows air to enter the furnace 3 from multiple angles to improve the combustion efficiency. Among them, the plurality of first air inlet holes 10 ensure that the primary combustion area can be fully burned, and the second air inlet hole 11 provides sufficient oxygen to the secondary combustion area to ensure the full combustion of volatile gases.

[0050] Reference Figure 2 - Figure 6 The combustion structure includes a rotating bracket 31 fixed in the circular grate 7. A plurality of ash leakage holes 8 are provided in the circular grate 7, and these ash leakage holes 8 can filter the ash on the circular grate 7 to prevent the ash from accumulating in the furnace 3. A driving motor 17 is fixed in the driving bin 16 in the motor box 4, and a worm 18 is fixed to the output shaft of the driving motor 17. A worm wheel 19 is meshed on one side of the worm 18, and the driving shaft of the screw feeder 6 is rotatably extended into the driving bin 16 and fixedly connected to the worm wheel 19. Therefore, when the driving motor 17 is started, the worm 18 can be driven to rotate, thereby driving the worm wheel 19 and the screw feeder 6 to rotate.

[0051] Reference Figure 3 and Figure 6A first gear 20 is also fixed to one side of the worm wheel 19, and the first gear 20 meshes with a second gear 22 fixed on the rotating shaft 21. Therefore, the rotation of the worm wheel 19 can also drive the rotating shaft 21 and the first end wheel 23 to rotate, and a rotating rod 24 is rotatably connected in the driving chamber 16. The first end wheel 23 drives the rotating rod 24 and the first rotating disk 26 to rotate through the second end wheel 25. A first pin 27 is fixed to the side of the bottom of the first rotating disk 26 that deviates from the center of the circle, and a sliding rod 28 is sealed and slidably penetrated through the outer wall of the base 2. One end of the sliding rod 28 extends into the driving chamber 16 and is fixed with a frame 29, and the first pin 27 extends into the frame 29 and slidably cooperates with the frame 29. Therefore, when the first rotating disk 26 rotates, the sliding rod 28 can be driven to reciprocate through the cooperation of the first pin 27 and the frame 29.

[0052] Reference Figure 3 and Figure 6 The end of the sliding rod 28 away from the frame 29 is rotatably connected to the connecting rod 30, and the bottom of the rotating bracket 31 is fixed with a connecting shaft 32, and the bottom end of the connecting shaft 32 is fixed with a second rotating disk 33. A second pin 34 is fixed to the side of the bottom of the second rotating disk 33 that deviates from the center of the circle, and the second pin 34 is rotatably connected to the top of the connecting rod 30. Therefore, when the sliding rod 28 reciprocates, the second rotating disk 33 and the rotating bracket 31 can be driven to rotate through the cooperation of the connecting rod 30 and the second pin 34. The rotation of the rotating bracket 31 can drive the circular grate 7 to rotate, thereby achieving uniform combustion of raw materials and discharge of ash.

[0053] In the specific use process, the drive motor 17 is first started, and the drive motor 17 drives the screw feeder 6 to rotate through the cooperation of the worm 18 and the worm wheel 19, so as to transport the raw materials from the silo 5 to the furnace 3. At the same time, the worm wheel 19 also drives the rotating shaft 21 and the first end wheel 23 to rotate through the cooperation of the first gear 20 and the second gear 22. The first end wheel 23 drives the first turntable 26 to rotate through the second end wheel 25, and the first turntable 26 drives the sliding rod 28 to reciprocate through the cooperation of the first pin 27 and the frame 29. The sliding rod 28 drives the second turntable 33 and the rotating bracket 31 to rotate through the cooperation of the connecting rod 30 and the second pin 34, thereby driving the circular grate 7 to rotate. The rotation of the circular grate 7 can make the raw materials on it move to the edge of the furnace 3 under the action of centrifugal force, so as to realize the uniform combustion of the raw materials. The ash after combustion falls on the ash shaking plate 42 through the ash leakage hole 8, and the automatic discharge of ash is realized through a specific discharge structure.

[0054] At the same time, the air supply duct 12 provides air to the furnace 3 through the combustion-supporting air duct 9. The first air inlet 10 and the second air inlet 11 on the combustion-supporting air duct 9 can ensure that both the primary combustion and the secondary combustion can obtain sufficient oxygen supply, thereby improving the combustion efficiency. The arrangement of the arc-shaped scraper plate 38 can prevent the accumulation of raw materials and ash at the edge of the furnace 3 and affect the combustion efficiency.

[0055] Reference Figure 4 , Figure 5 and Figure 7 The scraping structure includes a guide rod 37 fixed on the top of the circular grate 7. The outer wall of the guide rod 37 is slidably sleeved with an arc-shaped scraping plate 38 that fits tightly with the inner wall of the furnace 3. The function of the arc-shaped scraping plate 38 is to guide the raw materials or ash accumulated on the edge of the inner wall of the furnace 3 to the circular grate 7, ensuring that these materials can be more fully exposed to oxygen, thereby achieving more complete combustion.

[0056] Reference Figure 7 In order to realize the up and down movement of the arc-shaped scraper plate 38, we rotate a reciprocating screw rod 39 through the circular grate 7. The top thread of the reciprocating screw rod 39 extends into the arc-shaped scraper plate 38, so when the reciprocating screw rod 39 rotates, it drives the arc-shaped scraper plate 38 to move up and down along the guide rod 37, thereby intermittently guiding the raw materials or ash.

[0057] Reference Figure 7 Furthermore, a third gear 40 located below the circular grate 7 is fixed to the bottom end of the reciprocating screw 39. At the bottom of the furnace body 1, we fixed an arc-shaped rack 36 located in the base 2. This arc-shaped rack 36 is intermittently meshed with the third gear 40. When the circular grate 7 rotates, it drives the reciprocating screw 39 and the arc-shaped scraper plate 38 to revolve together. When the third gear 40 is meshed with the arc-shaped rack 36, it drives the arc-shaped scraper plate 38 to move up a certain distance. When the third gear 40 is disengaged from the arc-shaped rack 36, the arc-shaped scraper plate 38 will maintain its current position unchanged. As the circular grate 7 continues to rotate, the arc-shaped scraper plate 38 will continuously move up and down, and rotate with the circular grate 7 while moving. In this way, the arc-shaped scraper plate 38 can intermittently discharge the raw materials or ash thrown at the edge of the furnace 3 onto the circular grate 7.

[0058] Reference Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9 Next, let's look at the discharge structure. Inside the base 2, we fixed an ash baffle 13, which is located below the circular grate 7 and is used to carry the ash that falls from the circular grate 7. The top of the air supply duct 12 passes through this ash baffle 13 to ensure that the air supply is not obstructed. At the same time, we also fixed a rectangular plate 14 fixedly connected to the ash baffle 13 inside the base 2. This rectangular plate 14 and the ash baffle 13 together form an ash chamber 15 for storing ash.

[0059] Reference Figure 7 - Fig. 9In the ash chamber 15, a ash shaking plate 42 is provided for further processing of ash. A plurality of ash scraping plates 35 are fixed to the bottom of the circular grate 7, and the function of these ash scraping plates 35 is to discharge the ash on the ash baffle plate 13 onto the ash shaking plate 42.

[0060] Reference Figure 8 and Fig. 9 In order to drive the ash shaking plate 42 to rotate back and forth, we slide a movable seat 41 on the bottom inner wall of the ash chamber 15, and the top of the movable seat 41 is rotatably connected to the bottom of the ash shaking plate 42 through a rotating shaft. At the same time, a rectangular hole 43 is set in the rectangular plate 14, and a lifting block 44 is slidably connected in the rectangular hole 43. One end of the lifting block 44 is also rotatably connected to the ash shaking plate 42 through a rotating shaft. A spring 45 is fixed to the bottom of the lifting block 44, and the bottom end of the spring 45 is fixedly connected to the base 2. In this way, when the lifting block 44 moves up and down, it will drive the ash shaking plate 42 to rotate back and forth through the rotating shaft.

[0061] Reference Figure 8 and Fig. 9 In order to realize the up and down movement of the lifting block 44, we slide a vertical rod 47 through the ash baffle 13, and the bottom end of the vertical rod 47 touches the top of the lifting block 44. At the same time, at the bottom of the circular grate 7, we fixed a plurality of hemispherical push blocks 48, which cooperate with the vertical rod 47.

[0062] Specifically, when the circular grate 7 rotates, it will synchronously drive the hemispherical push blocks 48 to rotate. The cooperation of the multiple hemispherical push blocks 48 and the spring 45 will continuously drive the vertical rod 47 and the lifting block 44 to move up and down. The movement of the lifting block 44 will drive the ash shaking plate 42 to rotate back and forth, so that the ash falling on the ash shaking plate 42 is discharged to one side, which is convenient for the removal of ash in the ash chamber 15 in the later stage.

[0063] Reference Figure 8 The design of the ash-shaking plate 42 is that a guide ramp 54 is specially provided below the side away from the lifting block 44. The guide ramp 54 is firmly fixed to the inner wall of the bottom of one side of the ash chamber 15. When the ash-shaking plate 42 rotates under the drive of the lifting block 44, the ash accumulated on it will fall. At this time, the guide ramp 54 plays a key role in receiving and guiding, which ensures that the fallen ash can slide smoothly to the bottom of the ash chamber 15, thereby effectively avoiding the accumulation of ash in the ash chamber 15 and ensuring the continuous and efficient operation of the furnace.

[0064] Reference Figure 1 - Figure 3Then, the inner wall of the furnace body 1 is specially treated and a layer of heat-insulating material is laid, which helps to reduce the heat loss of the furnace 3 during the combustion process and improve the thermal efficiency of the furnace. The shape of the furnace 3 is designed to be a circle with a wide bottom and a narrow top. This design not only increases the volume of the furnace, but also allows the flame in the furnace to burn more fully. In addition, the inner wall of the furnace 3 is also coated with a layer of refractory cement, which further enhances the high temperature resistance of the furnace and prolongs the service life of the furnace.

[0065] In summary, this biomass stove with internal air supply and automatic slag cleaning achieves uniform combustion of biomass fuel, automatic ash discharge and improved combustion efficiency through ingenious structural design and efficient heat exchange system. At the same time, it also has the advantages of automatic slag cleaning, good thermal insulation performance and long service life, providing residents with convenient and efficient heating and cooking solutions.

[0066] Example 2: Reference Figure 1 and Figure 2 , which is improved on the basis of Example 1: a smoke chamber 49 and a water chamber 50 are cleverly arranged inside the furnace body 1. The water chamber 50 is located on the periphery of the smoke chamber 49, forming an efficient heat exchange system. When the biomass fuel in the furnace 3 burns, the generated smoke is guided into the smoke chamber 49 through the smoke inlet pipe 51, and then discharged into the atmosphere through the smoke exhaust pipe 52. In this process, the high-temperature smoke and the water in the water chamber 50 undergo sufficient heat exchange, so that the water is heated. Residents can inject clean water into the water chamber 50 through the water inlet 53 on one side of the furnace body 1, and when hot water is needed, water can be taken from the water outlet 46. This design not only realizes the utilization of waste heat of the stove, but also improves the utilization efficiency of energy.

[0067] In addition, in order to facilitate the daily cooking needs of residents, a bracket can be set on the top of the stove body 1. Through the bracket, residents can set up a simple stove and cook using the heat generated in the furnace 3. This design not only improves the practicality of the stove, but also makes the stove more versatile in function.

[0068] A method for using a biomass stove with internal air supply and automatic slag cleaning comprises the following steps:

[0069] S1. Put the biomass raw material into the silo 5, drive the worm 18 to rotate through the driving motor 17, and the worm 18 and the worm wheel 19 cooperate to drive the screw feeder 6 to rotate. The screw feeder 6 puts the raw material into the furnace 3. The screw feeder 6 can also make the silo 5 relatively closed to prevent the combustible gas and flame generated by combustion from spreading to the silo 5, and the worm wheel 19 drives the rotating shaft 21 and the first end wheel 23 to rotate through the cooperation of the first gear 20 and the second gear 22. The first end wheel 23 drives the first turntable 26 to rotate through the second end wheel 25. The first turntable 26 drives the sliding rod 28 to slide back and forth through the cooperation of the first pin shaft 27 and the frame 29. The sliding rod 28 drives the rotating bracket 31 and the circular grate 7 to rotate through the cooperation of the connecting rod 30, the second pin shaft 34 and the second turntable 33. The circular grate 7 drives the raw material thereon to rotate, and the raw material moves toward the edge of the furnace 3 under the action of centrifugal force;

[0070] S2. External wind enters the combustion-supporting air duct 9 through the air supply duct 12. The rotation characteristics of the combustion-supporting air duct 9 can enhance the turbulence of the combustible gas in the furnace, and can sweep the wall of the furnace 3, which is helpful to improve the combustion efficiency and remove the combustible gas attached to the wall of the furnace 3. The multiple first air inlet holes 10 ensure that the primary combustion area can be fully burned. The first air inlet hole 10 at the bottom is used to cooperate with the rotation of the circular grate 7 to mix the fuel evenly. The other first air inlet holes 10 are used to supply the required air for the primary combustion to ensure that the primary combustion is fully carried out. The characteristic of biomass fuel is that it has more volatiles. In view of this feature, multiple second air inlet holes 11 are set to provide sufficient oxygen to the secondary combustion area through the second air inlet holes 11 to ensure the full combustion of volatile gases.

[0071] S3, during the rotation of the circular grate 7, the raw materials thereon are burned to form ash slag, and when the circular grate 7 rotates, the ash slag falls onto the ash baffle plate 13 through the ash leakage hole 8, and the circular grate 7 drives the ash scraper plate 35 to rotate at the same time, so as to discharge the ash slag on the ash baffle plate 13 into the ash chamber 15. In addition, when the circular grate 7 rotates, the reciprocating screw rod 39 and the arc-shaped scraper plate 38 are driven to revolve, and when the third gear 40 is meshed with the arc-shaped rack 36, the arc-shaped scraper plate 38 is driven to move up a certain distance, and when the third gear 40 is meshed with the arc-shaped rack After the arc scraper plate 36 is disengaged, the arc scraper plate 38 keeps its position unchanged. With the rotation of the circular grate 7, the arc scraper plate 38 continuously moves up and down. While the arc scraper plate 38 moves up and down, it rotates with the circular grate 7. The arc scraper plate 38 can intermittently discharge the raw materials or ash thrown on the edge of the furnace 3 onto the circular grate 7, which not only allows the raw materials to fully contact oxygen for full combustion, but also can discharge the burned ash through the ash leakage hole 8 onto the ash baffle plate 13, so as to facilitate the later discharge onto the ash shaking plate 42;

[0072] S4. In addition, when the circular grate 7 rotates, the hemispherical push block 48 is synchronously driven to rotate. The cooperation of the multiple hemispherical push blocks 48 and the spring 45 continuously drives the vertical rod 47 and the lifting block 44 to move up and down. The lifting block 44 continuously drives the ash shaking plate 42 to rotate back and forth, so that the ash falling on the ash shaking plate 42 can be discharged to one side, which is convenient for the removal of ash in the ash chamber 15 in the later stage, simplifying the ash collection and treatment process;

[0073] S5. In addition, during use, clean water is injected into the water cavity 50 through the water inlet 53, and the smoke generated during combustion in the furnace 3 enters the smoke chamber 49 through the smoke inlet pipe 51 and is discharged through the smoke exhaust pipe 52. The high-temperature smoke passing through the smoke chamber 49 can heat the water in the water cavity 50, which is convenient for residents to use. In addition, a bracket can be set on the top of the furnace body 1, and a simple stove can be set up through the bracket to meet the requirements of daily cooking.

[0074] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 17 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selection according to their needs or convenience.

[0075] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A biomass stove with internal air supply and automatic slag cleaning, characterized in that: The furnace body (1) comprises a furnace (3) provided therein, a base (2) being fixed at the bottom of the furnace body (1), a motor box (4) being fixed at one side of the furnace body (1), a material bin (5) being provided therein and being connected to the furnace (3), a screw feeder (6) being rotatably provided therein and being used for conveying raw materials in the material bin (5) into the furnace (3), and the screw feeder (6) being able to be relatively closed to the material bin (5); It also includes a circular grate (7), wherein a circular hole is provided at the bottom of the furnace body (1), and the circular grate (7) is rotatably arranged in the circular hole, an air supply duct (12) is provided in the base (2), and the top end of the air supply duct (12) passes through the circular grate (7), and an arc-shaped scraper plate (38) is provided on the top of the circular grate (7) for guiding raw materials and ash on the edge of the inner wall of the furnace (3) onto the circular grate (7); It also includes an ash shaking plate (42) disposed in the base (2) and used to discharge ash to the outside; An air supply structure, arranged on the top of the circular grate (7) and used for supplying air from the inside to the furnace (3); A combustion structure, arranged in the circular grate (7), for fully burning the raw materials entering the furnace (3); a scraping structure, arranged in the circular grate (7), for guiding raw materials and ash accumulated on the edge of the furnace (3) onto the circular grate (7); A discharge structure is arranged in the base (2) and is used to drive the ash shaking plate (42) to rotate back and forth, so as to automatically discharge the ash falling on the ash shaking plate (42) to the outside; The air supply structure comprises a combustion-supporting air duct (9) fixed on the top of the circular grate (7), and the top of the air supply duct (12) is connected to the combustion-supporting air duct (9), and the outer wall of the combustion-supporting air duct (9) is provided with a plurality of second air inlet holes (11) and the first air inlet holes (10), and the second air inlet holes (11) are located above the first air inlet holes (10); The combustion structure comprises a rotating bracket (31) fixed in a circular grate (7); a plurality of ash leakage holes (8) are provided in the circular grate (7) for filtering ash on the circular grate (7); a driving bin (16) is provided in the motor box (4); a driving motor (17) is fixed in the driving bin (16); a worm (18) is fixed to the output shaft of the driving motor (17); a worm wheel (19) is meshed with one side of the worm wheel (18); and a driving shaft of the screw feeder (6) is rotatably extended into the driving bin (16) and is fixedly connected to the worm wheel (19). A first gear (20) is fixed to one side of the worm wheel (19), and the first gear (20) is fixedly sleeved on the outer wall of the driving shaft of the screw feeder (6); a rotating shaft (21) is rotatably connected in the driving chamber (16); a second gear (22) meshing with the first gear (20) is fixed to one end of the rotating shaft (21); a first end wheel (23) is fixed to the other end of the rotating shaft (21); a rotating rod (24) is rotatably connected in the driving chamber (16); a second gear (22) meshing with the first gear (20) is fixed to the top of the rotating rod (24); The second end wheel (25) is provided with a first rotating disk (26) fixed at the bottom end of the rotating rod (24); a first pin shaft (27) is fixed at a side of the bottom of the first rotating disk (26) that deviates from the center of the circle; a sliding rod (28) is slidably penetrated through the outer wall of the base (2); one end of the sliding rod (28) extends into the driving bin (16) and is fixed with a frame (29); the first pin shaft (27) extends into the frame (29) and is slidably matched with the frame (29); the first rotating disk (26) drives the sliding rod through the matching of the first pin shaft (27) and the frame (29). (28) reciprocates, one end of the sliding rod (28) away from the frame (29) is rotatably connected to a connecting rod (30), a connecting shaft (32) is fixed to the bottom of the rotating bracket (31), a second rotating disk (33) is fixed to the bottom end of the connecting shaft (32), a second pin shaft (34) is fixed to the side of the bottom of the second rotating disk (33) that deviates from the center of the circle, and the second pin shaft (34) is rotatably connected to the top of the connecting rod (30), and the sliding rod (28) drives the second rotating disk (33) and the rotating bracket (31) to rotate through the connecting rod (30) and the second pin shaft (34); The scraper structure comprises a guide rod (37) fixed on the top of the circular grate (7), an arc-shaped scraper plate (38) in contact with the inner wall of the furnace (3) and slidably sleeved on the outer wall of the guide rod (37) for guiding raw materials and ash accumulated on the edge of the inner wall of the furnace (3) onto the circular grate (7), a reciprocating screw rod (39) rotatingly penetrates the circular grate (7), the top thread of the reciprocating screw rod (39) extends into the arc-shaped scraper plate (38) for driving the arc-shaped scraper plate (38) to move up and down and intermittently guide the raw materials, a third gear (40) located below the circular grate (7) is fixed to the bottom end of the reciprocating screw rod (39), and an arc-shaped rack (36) located in the base (2) is fixed to the bottom of the furnace body (1), and the arc-shaped rack rod (36) is intermittently meshed with the third gear (40); The discharge structure comprises an ash baffle plate (13) fixed in the base (2), and the ash baffle plate (13) is located below the circular grate (7) and is used to carry ash falling from the circular grate (7). The top of the air supply duct (12) passes through the ash baffle plate (13). A rectangular plate (14) fixedly connected to the ash baffle plate (13) is fixed in the base (2). The base (2) forms an ash chamber (15) through the ash baffle plate (13) for storing ash, and an ash shaking plate (42) is arranged in the ash chamber (15). A plurality of ash scraping plates (35) are fixed at the bottom of the circular grate (7), and the ash scraping plates (35) are used to discharge ash on the ash baffle plate (13) onto the ash shaking plate (42); The discharge structure further comprises a movable seat (41) sliding on the inner wall of the bottom of the ash chamber (15); the top of the movable seat (41) is rotatably connected to the bottom of the ash shaking plate (42) via a rotating shaft; a rectangular hole (43) is provided in the rectangular plate (14); a lifting block (44) is slidably connected in the rectangular hole (43); one end of the lifting block (44) is rotatably connected to the ash shaking plate (42) via a rotating shaft; a spring (45) is fixed to the bottom of the lifting block (44); The bottom end of the spring (45) is fixedly connected to the base (2); a vertical rod (47) is slidably penetrated in the ash baffle (13), and the bottom end of the vertical rod (47) contacts the top of the lifting block (44); a plurality of hemispherical push blocks (48) are fixed to the bottom of the circular grate (7), and the vertical rod (47) cooperates with the hemispherical push blocks (48); the cooperation of the hemispherical push blocks (48) and the spring (45) is used to drive the vertical rod (47) and the lifting block (44) to move reciprocatingly up and down.

2. The biomass stove with internal air supply and automatic slag cleaning according to claim 1, characterized in that: A material guiding inclined plate (54) is provided below the side of the ash shaking plate (42) away from the lifting block (44), and the material guiding inclined plate (54) is fixed to the bottom inner wall of one side of the ash chamber (15) for receiving and guiding ash residue dropped when the ash shaking plate (42) rotates.

3. The biomass stove with internal air supply and automatic slag cleaning according to claim 2, characterized in that: The inner wall of the furnace body (1) is paved with a heat-insulating material, the furnace (3) is wide at the bottom and narrow at the top, and the cross section of the furnace (3) is circular, and the inner wall of the furnace (3) is coated with a layer of refractory cement.

4. The biomass stove with internal air supply and automatic slag cleaning according to claim 3, characterized in that: The furnace body (1) is provided with a smoke chamber (49) and a water chamber (50), and the water chamber (50) is located outside the smoke chamber (49). The smoke in the smoke chamber (49) is used to heat the water in the water chamber (50). A smoke inlet pipe (51) is fixed to the inner wall of the bottom of the smoke chamber (49), and the bottom end of the smoke inlet pipe (51) extends into the furnace (3) and is used to guide the smoke into the smoke chamber (49). A smoke exhaust pipe (52) connected to the smoke chamber (49) is fixed to the top of the furnace body (1). A water inlet (53) and a water outlet (46) connected to the water chamber (50) are provided on one side of the furnace body (1), and the water outlet (46) is located below the water inlet (53).

5. A method for using a biomass stove with internal air supply and automatic slag cleaning according to claim 4, characterized in that: The following steps are involved: S1. The biomass raw material is put into the silo (5), and the driving motor (17) drives the worm (18) to rotate. The raw material is fed into the furnace (3) through the cooperation of the worm wheel (19) and the screw feeder (6); the worm wheel (19) also drives the first rotating disk (26) to rotate through the gear transmission, thereby driving the sliding rod (28) to slide back and forth and the circular grate (7) to rotate, so that the raw material moves to the edge of the furnace (3) under the action of centrifugal force; S2, external wind enters the combustion-supporting air duct (9) through the air supply duct (12); multiple first air inlet holes (10) ensure that the primary combustion is complete, the first air inlet hole (10) at the bottom promotes fuel mixing, and the other first air inlet holes (10) supply air; the second air inlet hole (11) provides oxygen for the secondary combustion to ensure that the volatile gas is completely burned; S3, during the rotation of the circular grate (7), the burned ash falls onto the ash baffle plate (13) through the ash leakage hole (8), and the ash scraper plate (35) discharges the ash into the ash chamber (15); the circular grate (7) also drives the arc-shaped scraper plate (38) and the reciprocating screw (39) to revolve, and the arc-shaped scraper plate (38) moves up and down through the meshing of the third gear (40) and the arc-shaped rack (36), and intermittently discharges the raw materials or ash on the edge of the furnace (3) back to the circular grate (7), so as to ensure that the raw materials are fully burned and the ash is discharged; S4. When the circular grate (7) rotates, the hemispherical push block (48) cooperates with the spring (45) to drive the vertical rod (47) and the lifting block (44) to move up and down, driving the ash shaking plate (42) to reciprocate, so that the ash is discharged to one side, simplifying the ash collection and treatment; S5. Clean water is injected into the water cavity (50). The smoke in the furnace (3) passes through the smoke chamber (49) to heat the water in the water cavity (50) for use by residents. A bracket can be provided on the top of the furnace body (1) to mount a stove to meet daily cooking needs.

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