Solid granular fuel stove

Abstract

The utility model provides a solid granular fuel stove which comprises a first stove barrel, a second stove barrel, a stove box and a combustion-supporting air pipe, a pair of partition plates is arranged in the stove box, a primary combustion chamber is formed between the partition plates in a surrounding mode, the upper end of the primary combustion chamber is further communicated with the lower end of the first stove barrel, and a stove ring is arranged at the upper end of the first stove barrel. The inner space of the furnace ring serves as a secondary combustion chamber, a secondary air distribution chamber is formed between the periphery of the furnace ring and the inner wall of the first furnace barrel in a surrounding mode, secondary air distribution holes are formed in the surface of the furnace ring, the secondary air distribution chamber is further communicated with a combustion-supporting air pipe, the first furnace barrel is contained in the second furnace barrel, and the combustion-supporting air pipe is arranged between the first furnace barrel and the second furnace barrel. By the adoption of the technical scheme, airflow fed into the secondary combustion chamber through the combustion-supporting air pipe is heated by heat energy generated by fuel in the first furnace barrel to form high-temperature combustion-supporting air, smoke in the secondary combustion chamber rapidly reaches the ignition temperature, combustion-supporting efficiency is improved, and the fuel is combusted as sufficiently as possible.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, and in particular to a stove with solid granular fuel. Background Technology

[0002] A stove is a device that generates heat energy by burning fuel. Depending on the type of fuel, stoves can be classified into kerosene stoves, gas stoves, wood-burning stoves, and others. In recent years, with the demands of new rural construction and energy conservation and environmental protection, the development and utilization of biomass fuel stoves has received increasing attention and is gradually being promoted and applied. Existing biomass fuel stoves generally consist of a stove body containing a combustion chamber where fuel burns to generate heat. Conventional stoves typically lack a fuel supply device, requiring manual refueling at regular intervals. However, with the development of automation technology, automatic fuel supply devices have gradually been developed and attached to stoves, improving the convenience of use.

[0003] In the prior art, patent document with publication number "CN112833426A" discloses a civilian biomass vertical water-cooled stove for heating and warming, including a stove base and a stove shell. One end of the stove base has a flue header, and the other end has a flue pipe. A maintenance plate is installed on the stove shell. Inside the stove shell are a gasification zone combustion system, a heat exchange and purification system, a feeding anti-backfire system, a combustion-supporting air distribution and ignition system, and a cooking system. The gasification zone combustion system includes a volatile matter combustion chamber, and the feeding anti-backfire system includes a material discharge fireproof chamber. The bottom end of the material discharge fireproof chamber is connected to the volatile matter combustion chamber via a downwardly inclined feed pipe. A controller system is installed on the stove shell. This patented technology effectively avoids backfire, flashback, and backsmoke phenomena caused by non-contact feeding and combustion, combined with a suction cooling design.

[0004] In the prior art, in order to facilitate the addition of fuel, the stove is equipped with a feeding device (15), and in order to promote the complete combustion of fuel, a corresponding ventilation structure is set. For example, the patent document with application number "2024210585294" discloses a combustion device for an open flame stove, including a furnace cylinder, a furnace ring and a furnace box. A pair of partitions are provided in the furnace box. The surface of the partitions is provided with primary air distribution holes, and the partitions divide the internal space of the furnace box into a primary air distribution chamber and a combustion chamber. The surface of the furnace box is provided with a primary air inlet hole and a feeding hole. The primary air distribution chamber is connected to the primary air inlet hole, and the combustion chamber is connected to the feeding hole. The furnace cylinder is set above the combustion chamber. The surface of the furnace cylinder is provided with a secondary air inlet hole, and the surface of the furnace ring is provided with a secondary air distribution hole. The furnace ring is fitted on the upper end of the furnace cylinder. The furnace ring and the inner wall of the furnace cylinder surround each other to form a secondary air distribution chamber. The secondary air inlet hole and the secondary air distribution hole are both connected to the secondary air distribution chamber. This patented technology allows solid fuel to undergo a first and second combustion in the presence of oxygen, thus ensuring complete combustion and releasing its heat energy. However, because the airflow drawn in from the external environment through the air supply pipe is at a low temperature, the flue gas in the secondary combustion chamber is difficult to reach its ignition temperature quickly after entering the chamber. This results in the airflow in the air supply pipe not being efficient enough in supporting the secondary combustion of the flue gas. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a solid granular fuel stove.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a solid pellet fuel stove, including a first furnace cylinder, a second furnace cylinder, a furnace box, and a combustion air duct. The furnace box contains a pair of partitions that form a primary combustion chamber. A primary air distribution chamber is formed between the partitions and the inner wall of the furnace box. The surface of each partition has several primary air distribution holes. The upper end of the primary combustion chamber is connected to the lower end of the first furnace cylinder. A furnace ring is located at the upper end of the first furnace cylinder. The internal space of the furnace ring serves as a secondary combustion chamber. A secondary air distribution chamber is formed between the furnace ring and the inner wall of the first furnace cylinder. The surface of the furnace ring has secondary air distribution holes. The secondary air distribution chamber is also connected to the combustion air duct. The first furnace cylinder is housed within the second furnace cylinder, and the combustion air duct is positioned between the first and second furnace cylinders.

[0008] One end of the combustion-supporting air duct is fixed to the outer surface of the first furnace cylinder, and the other end of the combustion-supporting air duct is close to the lower end face of the second furnace cylinder.

[0009] The length of the combustion air duct is parallel to the axial direction of the first furnace cylinder, and the distance between the combustion air duct and the first furnace cylinder is less than one-quarter of the inner diameter of the first furnace cylinder.

[0010] There are two combustion air ducts, which are located on the left and right sides of the first furnace cylinder.

[0011] The furnace box is also fixedly connected to one side of the air box, and an induced draft fan is installed on the other side of the air box. The primary air distribution chamber is also connected to the air box. One end of the combustion air duct is fixedly connected to the outer surface of the first furnace cylinder, and the other end of the combustion air duct is also connected to the air box.

[0012] The solid pellet fuel stove also includes a feeding device, which includes a first feeding pipe and a second feeding pipe. A first motor is installed at one end of the first feeding pipe, and the other end of the first feeding pipe is fixedly connected to the furnace box. A second motor is installed at one end of the second feeding pipe and a feeding port is provided. The other end of the second feeding pipe is connected to the first feeding pipe. The output shaft of the first motor is also fixedly connected to a first auger, and the output shaft of the second motor is also fixedly connected to a second auger. The surface of the first feeding pipe is also provided with ventilation holes. The first feeding pipe also passes through the air box, and the ventilation holes are accommodated inside the air box.

[0013] The number of primary air distribution holes is multiple, and the multiple primary air distribution holes are evenly distributed in an array along the length and height directions of the partition.

[0014] The number of secondary air distribution holes is multiple, and the multiple secondary air distribution holes are evenly distributed in an array along the outer circumference and height direction of the furnace ring.

[0015] The solid pellet fuel stove also includes an ash unloading device, which includes a foot plate and is fixedly connected to the furnace box. The lower end of the second furnace cylinder is flush with the surface of the foot plate, and the upper end of the second furnace cylinder is fixedly connected to the furnace plate. The relative height difference between the furnace plate and the upper end surface of the first furnace cylinder is greater than zero.

[0016] The ash unloading device also includes a cylinder base, a guide rail box, an ash box, and a support rod. The foot plate is fixedly connected to the cylinder base, the cylinder base is fixedly connected to the guide rail box, the ash box is fitted inside the guide rail box, and the ash box is also fixedly connected to the box cover. The surface of the guide rail box is also provided with a limiting pin. The support rod is hinged to the box cover, and one end of the support rod is fixedly connected to a pull rod. The other end of the support rod is provided with a locking hook. When the support rod is rotated and the limiting pin is engaged in the locking hook, the surface of the pull rod is in contact with the surface of the box cover.

[0017] The beneficial effects of this utility model are as follows: Using the technical solution of this utility model, since the combustion-supporting air duct is located between the first and second furnace cylinders, when solid granular fuel undergoes primary and secondary combustion successively in the furnace box and furnace ring, the heat generated by combustion raises the surface temperature of the first furnace cylinder. Due to the obstruction effect of the second furnace cylinder, the heat generated by the fuel is prevented from dissipating rapidly, and the heat is stored in the air between the first and second furnace cylinders, causing the air temperature between the first and second furnace cylinders to rise accordingly. The airflow drawn into the secondary combustion chamber through the combustion-supporting air duct is a high-temperature airflow, which allows the flue gas in the secondary combustion chamber to quickly reach the ignition temperature, thereby improving the airflow combustion efficiency, enabling the high-temperature flue gas to burn completely, and increasing the amount of heat energy released by the stove. Attached Figure Description

[0018] Figure 1 This is an isometric drawing of this utility model;

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a top view of the furnace box of this utility model;

[0021] Figure 4 This is an isometric view of the feeding device of this utility model;

[0022] Figure 5 This is a top view of the feeding device of this utility model;

[0023] Figure 6 This is a left view of the feeding device of this utility model;

[0024] Figure 7 This is a front view of the feeding device of this utility model;

[0025] Figure 8 This is an isometric view of the furnace ring of this utility model;

[0026] Figure 9 This is an isometric view of the guide plate of this utility model;

[0027] Figure 10 This is an isometric drawing of the ash unloading device of this utility model;

[0028] Figure 11 This is a front view of the ash unloading device of this utility model;

[0029] Figure 12 This is a utility model Figure 11 A magnified view of a section at point I;

[0030] Figure 13 This is an isometric view of the support rod (31) of this utility model.

[0031] In the diagram: 1-First furnace cylinder, 2-Furnace box, 3-Combustion air duct, 4-Baffle plate, 5-Primary combustion chamber, 6-Primary air distribution chamber, 7-Primary air distribution hole, 8-Furnace ring, 9-Secondary combustion chamber, 10-Secondary air distribution chamber, 11-Secondary air distribution hole, 12-Secondary furnace cylinder, 13-Blowbox, 14-Induced draft fan, 15-Feeding device, 16-First feed pipe, 17-Second feed pipe, 18-First motor, 19-Second motor, 20-Feed inlet, 21- 22-Second auger, 23-Ventilation hole, 24-Hopper, 25-Furnace sleeve, 26-Foot plate, 27-Furnace plate, 28-Cylinder seat, 29-Guide rail box, 30-Ash box, 31-Support rod, 32-Box cover, 33-Limit pin, 34-Pull rod, 35-Locking hook, 36-Electronic ignition rod, 37-Upper furnace ring, 38-Lower furnace ring, 39-Guide plate, 40-Ash discharge hole, 41-Locking nut, 42-End connecting plate, 43-Ash leakage hole. Detailed Implementation

[0032] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0033] This utility model provides a solid granular fuel stove, such as Figures 1 to 13 As shown, the furnace includes a first furnace tube 1, a second furnace tube 12, a furnace box 2, and a combustion air duct 3. A pair of partitions 4 are provided inside the furnace box 2, forming a primary combustion chamber 5 between the partitions 4. A primary air distribution chamber 6 is formed between the partitions 4 and the inner wall of the furnace box 2. The surface of the partitions 4 is provided with several primary air distribution holes 7. The upper end of the primary combustion chamber 5 is also connected to the lower end of the first furnace tube 1. A furnace ring 8 is provided at the upper end of the first furnace tube 1. The internal space of the furnace ring 8 serves as a secondary combustion chamber 9. A secondary air distribution chamber 10 is formed between the furnace ring 8 and the inner wall of the first furnace tube 1. The surface of the furnace ring 8 is provided with secondary air distribution holes 11. The secondary air distribution chamber 10 is also connected to the combustion air duct 3. The first furnace tube 1 is housed inside the second furnace tube 12, and the combustion air duct 3 is located between the first furnace tube 1 and the second furnace tube 12.

[0034] By adopting the technical solution of this utility model, since the combustion-supporting air duct is set between the first furnace cylinder and the second furnace cylinder, when the solid granular fuel undergoes primary and secondary combustion in the furnace box and furnace ring respectively, the heat energy generated by combustion raises the surface temperature of the first furnace cylinder. Due to the obstruction effect of the second furnace cylinder, the heat energy generated by the fuel is prevented from being dissipated quickly, and the heat energy is stored in the air between the first and second furnace cylinders, which also raises the air temperature between the first and second furnace cylinders accordingly. The airflow drawn into the secondary combustion chamber through the combustion-supporting air duct is a high-temperature airflow, which enables the flue gas in the secondary combustion chamber to quickly reach the ignition temperature, thereby improving the airflow combustion efficiency, allowing the high-temperature flue gas to burn completely, and increasing the heat energy release of the stove.

[0035] Specifically, one end of the combustion air duct 3 is fixed to the outer surface of the first furnace cylinder 1, and the other end of the combustion air duct 3 is close to the lower end face of the second furnace cylinder 12. The length direction of the combustion air duct 3 is parallel to the axial direction of the first furnace cylinder 1, and the distance between the combustion air duct 3 and the first furnace cylinder 1 is less than one-quarter of the inner diameter of the first furnace cylinder 1. Preferably, there are two combustion air ducts 3, which are arranged on the left and right sides of the first furnace cylinder 1. By adopting the technical solution of this utility model, the heat energy generated by combustion raises the surface temperature of the first furnace cylinder. Due to the obstruction effect of the second furnace cylinder, the heat energy generated by the fuel is prevented from being quickly dissipated. The heat energy is stored in the air between the first and second furnace cylinders, causing the air temperature between the first and second furnace cylinders to rise accordingly. The airflow drawn into the secondary combustion chamber through the combustion-supporting air duct is a high-temperature airflow, which enables the flue gas in the secondary combustion chamber to quickly reach the ignition temperature, thereby improving the airflow combustion efficiency and enabling the high-temperature flue gas to burn completely, thus increasing the amount of heat energy released by the stove. In addition, the length direction of the combustion-supporting air duct 3 is parallel to the axis of the first furnace cylinder 1, and the distance between the combustion-supporting air duct 3 and the first furnace cylinder 1 is as small as possible, so that the heat energy stored between the first and second furnace cylinders can further heat the airflow in the combustion-supporting air duct 3, enabling the airflow in the combustion-supporting air duct 3 to quickly reach the ignition point of the flue gas in the first furnace cylinder 1, thereby improving the combustion efficiency.

[0036] In addition, the furnace box 2 is fixedly connected to one side of the air box 13, and an induced draft fan 14 is installed on the other side of the air box 13. The primary air distribution chamber 6 is also connected to the air box 13. One end of the combustion air duct 3 is fixedly connected to the outer surface of the first furnace cylinder 1, and the other end of the combustion air duct 3 is also connected to the air box 13. By adopting the technical solution of this utility model, under the guidance of the induced draft fan 14, the airflow in the external environment can quickly enter the combustion air duct 3. During the flow of the airflow in the combustion air duct 3, it is heated by the heat energy generated in the first furnace cylinder 1 and quickly enters the secondary combustion chamber, which fully assists the secondary combustion of the flue gas and improves the combustion efficiency of the furnace.

[0037] In addition, the solid pellet fuel stove also includes a feeding device 15, which includes a first feeding pipe 16 and a second feeding pipe 17. A first motor 18 is installed at one end of the first feeding pipe 16, and the other end of the first feeding pipe 16 is fixedly connected to the furnace box 2. A second motor 19 is installed at one end of the second feeding pipe 17 and a feed inlet 20 is provided. The other end of the second feeding pipe 17 is connected to the first feeding pipe 16. The output shaft of the first motor 18 is also fixedly connected to the first auger 21, and the output shaft of the second motor 19 is also fixedly connected to the second auger 22. The surface of the first feeding pipe 16 is also provided with ventilation holes 23. The first feeding pipe 16 also passes through the air box 13, and the ventilation holes 23 are accommodated in the air box 13. By adopting the technical solution of this utility model, since the first feed pipe 16 also penetrates the air box 13 and the ventilation hole 23 is accommodated in the air box 13, the airflow inside the air box 13 can enter the first feed pipe 16 through the ventilation hole 23, which will boost the solid granular fuel and prevent the solid granular fuel from blocking the inner wall of the first feed pipe 16 and the first screw conveyor 21, thus ensuring a stable fuel supply to the stove.

[0038] Specifically, the first feeding pipe 16 and the second feeding pipe 17 are also fixedly connected together by an end connecting plate 42, and the first motor 18 and the second motor 19 are both mounted on the surface of the end connecting plate 42. This allows all components to be highly integrated into the feeding device 15, improving the integration and modularity of the feeding device 15, and facilitating maintenance or replacement.

[0039] In addition, the feeding device 15 also includes an electronic ignition rod 36. One end of the electronic ignition rod 36 is screwed to the bellows 13, and the other end of the electronic ignition rod 36 extends into the primary combustion chamber 5 through the bellows 13. The angle between the length direction of the electronic ignition rod 36 and the surface of the bellows 13 is greater than zero. The electronic ignition rod 36 is also screwed to a locking nut 41. Preferably, the angle between the length direction of the electronic ignition rod 36 and the surface of the bellows 13 is 20° to 40°. With the technical solution of this utility model, when the locking nut 41 abuts against the surface of the bellows 13, the relative position between the electronic ignition rod 36 and the bellows 13 remains stable, preventing the electronic ignition rod 36 from falling off during operation or relocation of the feeding device 15. On the other hand, at the moment of ignition by the electronic ignition rod 36, the airflow from the first feeding pipe 16 blows the spark into the primary combustion chamber 5, causing the solid granular fuel to ignite rapidly.

[0040] Specifically, a hopper 24 is also provided at the feed inlet 20. The furnace box 2 is also fixedly connected to the furnace sleeve 25, and the lower end of the first furnace cylinder 1 is fitted inside the furnace sleeve 25. This makes it easy to assemble or disassemble the first furnace cylinder 1.

[0041] Furthermore, there are multiple primary air distribution holes 7, which are evenly arrayed along the length and height of the baffle 4. This allows the airflow to enter the primary combustion chamber 5 evenly through the distribution effect of the primary air distribution holes 7, resulting in a uniform combustion-supporting effect throughout the primary combustion chamber 5. Similarly, there are multiple secondary air distribution holes 11, which are evenly arrayed along the outer circumference and height of the furnace ring 8. This allows the high-temperature combustion-supporting airflow, delivered into the secondary air distribution chamber 10 via the combustion-supporting air duct 3, to be evenly distributed through the secondary air distribution holes 11 and then uniformly enter the secondary combustion chamber 9 from all directions, resulting in a uniform combustion-supporting effect throughout the secondary combustion chamber 9.

[0042] Specifically, the solid pellet fuel stove also includes an ash removal device, which includes a foot plate 26 fixedly connected to the furnace box 2. The lower end of the second furnace cylinder 12 is flush with the surface of the foot plate 26, and the upper end of the second furnace cylinder 12 is fixedly connected to the furnace plate 27. The relative height difference between the furnace plate 27 and the upper surface of the first furnace cylinder 1 is greater than zero. By adopting the technical solution of this utility model, the contact between the space between the first furnace cylinder 1 and the second furnace cylinder 12 and the external environment is minimized, so that the heat energy generated in the first furnace cylinder 1 can be stored in the space between the first furnace cylinder 1 and the second furnace cylinder 12 as much as possible, effectively heating the airflow inside the combustion air duct 3 and improving the combustion effect.

[0043] In addition, the ash unloading device also includes a cylinder base 28, a guide rail box 29, an ash box 30, and a support rod 31. A foot plate 26 is fixedly connected to the cylinder base 28, and the cylinder base 28 is fixedly connected to the guide rail box 29. The ash box 30 is fitted inside the guide rail box 29 and is also fixedly connected to the box cover 32. A limiting pin 33 is also provided on the surface of the guide rail box 29. The support rod 31 is hinged to the box cover 32, and one end of the support rod 31 is fixedly connected to a pull rod 34. The other end of the support rod 31 is provided with a locking hook 35. When the support rod 31 is rotated and the limiting pin 33 is engaged with the locking hook 35, the surface of the pull rod 34 is pressed against the surface of the box cover 32. Using the technical solution of this utility model, after the ash box 30 is loaded, because the surface of the pull rod 34 is pressed against the surface of the box cover 32, it can prevent nearby personnel from accidentally touching the protruding surface of the pull rod 34, thus avoiding injury to nearby personnel.

[0044] Specifically, the furnace ring 8 is also fixedly connected to the upper furnace ring 37 and the lower furnace ring 38 respectively. The upper furnace ring 37 covers the upper edge of the first furnace cylinder 1, and the lower furnace ring 38 abuts against the inner wall of the first furnace cylinder 1. The primary combustion chamber 5 is also provided with a guide plate 39. The left and right sides of the guide plate 39 are fixedly connected to the partition plate 4 respectively. One end of the guide plate 39 is also fixedly connected to the lower edge of the inner wall of the furnace box 2. The other end of the guide plate 39 and the inner wall of the furnace box 2 form an ash discharge hole 40 around each other, and the ash discharge hole 40 is close to the upper edge of the inner wall of the furnace box 2. By adopting the technical solution of this utility model, when solid granular fuel is fed into the primary combustion chamber by the feeding device, the airflow from the left and right sides of the guide plate 39 and the airflow from the first feeding pipe 16 cause the solid granular fuel to be evenly spread along the surface of the guide plate 39, so that the solid granular fuel can be fully burned on the surface of the guide plate 39 and release as much heat energy as possible. The ash produced after combustion falls into the ash box through the ash discharge hole 40 under the action of the airflow from the left and right sides of the guide plate 39 and the airflow from the first feeding pipe 16.

[0045] Specifically, the surface of the guide plate 39 is also provided with a number of ash leakage holes 43. The number of ash leakage holes 43 is multiple, and the multiple ash leakage holes 43 are arranged in a linear array on the surface of the guide plate 39. Using the technical solution of this utility model, since the airflow is also sent into the combustion chamber through the first feed pipe 16, on the one hand, it provides combustion assistance to the solid fuel in the primary combustion chamber; on the other hand, it also ensures that the solid fuel is evenly spread along the surface of the guide plate 39, promoting the complete combustion of the solid fuel in the aerobic environment for the first time. The ash formed by combustion is promptly discharged through the ash discharge hole 40 and the ash leakage hole 43, preventing the ash from affecting the combustion effect.

Claims

1. A solid granular fuel stove, characterized in that: The furnace includes a first furnace cylinder (1), a second furnace cylinder (12), a furnace box (2), and a combustion air duct (3). The furnace box (2) contains a pair of partitions (4), which surround each other to form a primary combustion chamber (5). The partitions (4) and the inner wall of the furnace box (2) surround each other to form a primary air distribution chamber (6). The surface of each partition (4) has several primary air distribution holes (7). The upper end of the primary combustion chamber (5) is connected to the lower end of the first furnace cylinder (1). The upper end of the first furnace cylinder (1) is provided with… There is a furnace ring (8), the internal space of the furnace ring (8) serves as a secondary combustion chamber (9), and a secondary air distribution chamber (10) is formed around the furnace ring (8) and the inner wall of the first furnace cylinder (1). The surface of the furnace ring (8) is provided with secondary air distribution holes (11), and the secondary air distribution chamber (10) is also connected to the combustion air duct (3). The first furnace cylinder (1) is housed in the second furnace cylinder (12), and the combustion air duct (3) is located between the first furnace cylinder (1) and the second furnace cylinder (12).

2. A solid granular fuel stove as described in claim 1, characterized in that: One end of the combustion air duct (3) is fixed to the outer surface of the first furnace cylinder (1), and the other end of the combustion air duct (3) is close to the lower end face of the second furnace cylinder (12).

3. A solid granular fuel stove as described in claim 1 or 2, characterized in that: The length direction of the combustion air duct (3) is parallel to the axial direction of the first furnace cylinder (1), and the distance between the combustion air duct (3) and the first furnace cylinder (1) is less than one-quarter of the inner diameter of the first furnace cylinder (1).

4. A solid granular fuel stove as described in claim 3, characterized in that: The number of combustion-supporting air pipes (3) is 2, and the 2 combustion-supporting air pipes (3) are arranged on the left and right sides of the first furnace cylinder (1).

5. A solid granular fuel stove as described in claim 1, characterized in that: The furnace box (2) is also fixedly connected to one side of the air box (13), and an induced draft fan (14) is installed on the other side of the air box (13). The primary air distribution chamber (6) is also connected to the air box (13). One end of the combustion air pipe (3) is fixedly connected to the outer surface of the first furnace cylinder (1), and the other end of the combustion air pipe (3) is also connected to the air box (13).

6. A solid granular fuel stove as described in claim 5, characterized in that: The solid pellet fuel stove also includes a feeding device (15), which includes a first feeding pipe (16) and a second feeding pipe (17). One end of the first feeding pipe (16) is equipped with a first motor (18), and the other end of the first feeding pipe (16) is fixedly connected to the furnace box (2). One end of the second feeding pipe (17) is equipped with a second motor (19) and has a feed inlet (20). The other end of the second feeding pipe (17) is connected to the first feeding pipe (16). The output shaft of the first motor (18) is also fixedly connected to the first auger (21), and the output shaft of the second motor (19) is also fixedly connected to the second auger (22). The surface of the first feeding pipe (16) is also provided with ventilation holes (23). The first feeding pipe (16) also passes through the air box (13), and the ventilation holes (23) are accommodated in the air box (13).

7. A solid granular fuel stove as described in claim 1, characterized in that: The number of primary air distribution holes (7) is multiple, and the multiple primary air distribution holes (7) are evenly distributed in an array along the length and height directions of the partition (4).

8. A solid granular fuel stove as described in claim 1, characterized in that: The number of secondary air distribution holes (11) is multiple, and the multiple secondary air distribution holes (11) are evenly distributed in an array along the outer periphery and height direction of the furnace ring (8).

9. A solid granular fuel stove as described in claim 1, characterized in that: The solid pellet fuel stove also includes an ash unloading device, which includes a foot plate (26) and is fixedly connected to the furnace box (2). The lower end of the second furnace cylinder (12) is flush with the surface of the foot plate (26), and the upper end of the second furnace cylinder (12) is fixedly connected to the furnace plate (27). The relative height difference between the furnace plate (27) and the upper end surface of the first furnace cylinder (1) is greater than zero.

10. A solid granular fuel stove as described in claim 9, characterized in that: The ash unloading device also includes a cylinder seat (28), a guide rail box (29), an ash box (30), and a support rod (31). The foot plate (26) is fixedly connected to the cylinder seat (28), the cylinder seat (28) is fixedly connected to the guide rail box (29), the ash box (30) is fitted inside the guide rail box (29), the ash box (30) is also fixedly connected to the box cover (32), the surface of the guide rail box (29) is also provided with a limiting pin (33), the support rod (31) is hinged to the box cover (32), and one end of the support rod (31) is fixedly connected to the pull rod (34). The other end of the support rod (31) is provided with a locking hook (35). When the support rod (31) is rotated and the limiting pin (33) is fitted into the locking hook (35), the surface of the pull rod (34) is in contact with the surface of the box cover (32).

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