Energy-saving combustion ladder furnace with uniform biomass mixing

Abstract

The present application relates to a kind of biomass mixes energy-saving combustion ladder furnace evenly, including ladder furnace and the upper loading port being opened in the side of ladder furnace, upper loading port is provided with upper loading assembly, upper loading assembly includes the upper loading frame for transmitting coal, upper loading frame top is provided with extrusion assembly, the middle part and both ends of upper loading frame output end are provided with grating and flap respectively, flap is provided with guide assembly, guide assembly includes the guide plate of sliding being set on grating, both sides guide assembly are respectively provided with lifting assembly and locking assembly, extrusion assembly is used to extrude bamboo chip into ball, guide assembly is guided to coal by both sides flap overturning when driving guide plate, lifting assembly is used to drive grating to lift, locking assembly is used to lock grating, so that fuel is evenly flowed on ladder, improve combustion effect.

Description

Technical Field

[0001] This invention relates to the field of stepped furnace technology, and more specifically to an energy-saving stepped furnace with uniform biomass mixing and combustion. Background Technology

[0002] A stepped grate furnace is a commonly used combustion device with good temperature and emission control. Its core design uses a stepped grate to allow waste to move gradually during combustion, achieving efficient and stable combustion.

[0003] A Chinese invention patent with application publication number CN115046211A discloses an intelligent alternative fuel incinerator, including a furnace body, a furnace bed, and a decomposition furnace. The furnace bed has multiple stepped grates arranged in sequence, which avoids the leakage phenomenon caused by poor sealing of conventional incinerators, solves the leakage risk of alternative fuels, especially fuels containing hazardous waste, and improves the utilization efficiency of alternative fuels.

[0004] However, the inventors have discovered that in actual applications, when fuel is delivered into the stepped furnace, it cannot be evenly distributed on the steps, usually resulting in more fuel in the middle and less on the sides, leading to poor combustion. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an energy-saving stepped combustion furnace with uniform biomass mixing. The furnace uses an extrusion assembly to compress bamboo shavings into balls for better mixing with coal. A grating plate blocks the fuel, causing it to flow upwards to both sides of the feed frame. A guide assembly causes the fuel to push a flapper to flip while simultaneously sliding the guide plate, ensuring both sides are evenly filled with fuel. A locking assembly unlocks the grating plate, and a lifting assembly raises the grating plate, allowing the fuel to flow evenly across the steps, thus improving combustion efficiency.

[0006] The technical solution of the present invention is as follows:

[0007] An energy-saving stepped combustion furnace for uniform biomass mixing includes a stepped furnace and a feeding port on one side of the stepped furnace. A feeding assembly is provided on the feeding port, including a feeding frame for conveying coal. An extrusion assembly is provided above the feeding frame. A grating plate and a flap are respectively provided at the middle and both ends of the output end of the feeding frame. A guide assembly is provided on each flap, including a guide plate slidably mounted on the grating plate. A lifting assembly and a locking assembly are respectively provided on both sides of the guide assembly. The extrusion assembly is used to extrude bamboo shavings into balls. When the flaps on both sides flip, the guide assembly drives the guide plate to guide the coal. The lifting assembly is used to move the grating plate up and down. The locking assembly is used to lock the grating plate.

[0008] As a preferred embodiment, the feeding assembly further includes an auger fixedly mounted on the feeding frame.

[0009] As a preferred embodiment, the extrusion assembly includes an opening in the feeding frame, a fixed frame fixedly mounted on the feeding frame, extrusion rollers rotatably mounted on both sides of the fixed frame, a material box fixedly mounted above the extrusion rollers, and active teeth and passive teeth fixedly mounted on the extrusion rollers, wherein the active teeth and passive teeth mesh with each other.

[0010] As a preferred embodiment, the single guide assembly further includes a chute formed on the loading frame, limiting grooves formed on both sides of the chute, a rotating shaft rotatably mounted on the loading frame, a disc fixedly mounted on the rotating shaft, a fixed plate fixedly mounted on the loading frame, a sliding rod slidably mounted on the fixed plate, a connecting rod hinged between the disc and the sliding rod, and a sliding column slidably mounted on the sliding rod. The rotating shaft is fixedly connected to the flip plate, the sliding column is fixedly connected to the guide plate, the grid plate cooperates with the chute, and the guide plate cooperates with the limiting groove.

[0011] As a preferred embodiment, the lifting assembly includes a first rack fixedly mounted on a slide bar on one side, a first gear rotatably mounted on a loading frame, a first connecting shaft fixedly mounted on the first gear, a first bevel gear fixedly mounted on the first connecting shaft, a second connecting shaft rotatably mounted on the loading frame, a second bevel gear and a second gear fixedly mounted on both sides of the second connecting shaft, a connecting column fixedly mounted on a grating plate, a lifting column slidably mounted on the connecting column, a spring fixedly mounted between the connecting column and the lifting column, a fixing sleeve fixedly mounted on the lifting column, a telescopic rod fixedly mounted on the loading frame, and a second rack fixedly mounted on the telescopic rod. The first bevel gear meshes with the second bevel gear, the first rack meshes with the first gear, the second gear meshes with the second rack, and the telescopic rod is fixedly connected to the fixing sleeve.

[0012] As a preferred embodiment, the locking assembly includes a locking groove formed on the grating plate, a first hydraulic groove formed on the inner wall of the feeding frame, a second hydraulic groove formed on the first hydraulic groove, a cylinder fixedly mounted on the feeding frame, a piston slidably mounted on the cylinder, a piston rod fixedly mounted on the piston, a pin slidably mounted in the first hydraulic groove, and a hydraulic pipe fixedly connected between the cylinder and the second hydraulic groove. The piston rod is fixedly connected to a sliding rod on the other side, and the pin cooperates with the locking groove.

[0013] As a preferred embodiment, both the pin and the piston are made of rubber.

[0014] As a preferred embodiment, a torsion spring is provided between the flap and the feeding frame.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. The present invention is equipped with a grating plate, a flap plate and a guide assembly. After the grating plate blocks the coal and bamboo chips, it allows them to flow to both sides of the feed frame. Then, the flap plate drives the guide plate to guide the coal and bamboo chips, ensuring that the coal and bamboo chips fall evenly on the steps and improving the combustion effect.

[0017] 2. The present invention is also provided with a lifting component and a locking component. The flip plate rotates while driving the grating plate to unlock and lift, so that the coal and bamboo chips are evenly transferred from the feeding frame to the steps. The lifting and lowering of the grating plate and the movement of the guide plate can be automatically adjusted according to the amount of coal and bamboo chips on both sides to achieve the effect of automatic adjustment.

[0018] In summary, the present invention has the advantages of good combustion effect and high efficiency, and is suitable for the field of stepped furnace technology. Attached Figure Description

[0019] The invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 A schematic diagram of a biomass-mixed, energy-saving stepped combustion furnace;

[0021] Figure 2 This is a schematic diagram of the feed inlet structure;

[0022] Figure 3 This is a schematic diagram of the extrusion assembly.

[0023] Figure 4 This is a schematic diagram of the guide component.

[0024] Figure 5 This is a schematic diagram of the limiting groove structure;

[0025] Figure 6 A structural diagram of the lifting and locking components;

[0026] Figure 7 This is a schematic diagram showing the state of bamboo shavings being compressed into balls by the extrusion rollers.

[0027] Figure 8 A schematic diagram showing the state of the fuel-driven flap opening, which in turn drives the guide plate and lifting column to work.

[0028] Figure 9 for Figure 8 Enlarged view of point A in the middle;

[0029] Figure 10 for Figure 8 Enlarged view at point B in the middle;

[0030] Figure 11 A schematic diagram showing the state when the other side flap is pushed open to unlock the grille for fuel;

[0031] Figure 12 for Figure 11 Enlarged view at point C;

[0032] Figure 13 for Figure 11 Enlarged view at point D;

[0033] Reference numerals: 1. Step furnace; 2. Feeding port; 3. Feeding assembly; 31. Feeding frame; 32. Screw; 4. Extrusion assembly; 41. Opening; 42. Fixing frame; 43. Extrusion roller; 44. Material box; 45. Driving gear; 46. Passive gear; 5. Grating plate; 6. Flip plate; 7. Guide assembly; 71. Guide plate; 72. Slide groove; 73. Limiting groove; 74. Rotating shaft; 75. Disc; 77. Fixing plate; 78. Slide rod; 79. Connecting rod; 710. Sliding column; 8. Lifting assembly; 81. First rack; 82. First gear; 83. First connecting shaft; 84. First bevel gear; 85. Second connecting shaft; 86. Second bevel gear; 87. Second gear; 88. Connecting column; 89. Lifting column; 810. Spring; 811. Fixing sleeve; 812. Telescopic rod; 813. Second rack; 9. Locking assembly; 91. Locking groove; 92. First hydraulic groove; 93. Second hydraulic groove; 94. Cylinder; 95. Piston; 96. Piston rod; 97. Pin; 98. Hydraulic pipe. Detailed Implementation

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] Example 1

[0036] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] like Figures 1 to 13 As shown, an energy-saving stepped combustion furnace with uniform biomass mixing includes a stepped furnace 1 and a feeding port 2 opened on one side of the stepped furnace 1. A feeding assembly 3 is provided on the feeding port 2. The feeding assembly 3 includes a feeding frame 31 for conveying coal. An extrusion assembly 4 is provided above the feeding frame 31. A grid plate 5 and a flip plate 6 are respectively provided in the middle and two sections of the output end of the feeding frame 31. A guide assembly 7 is provided on each flip plate 6. The guide assembly 7 includes a guide plate 71 slidably disposed on the grid plate 5. A lifting assembly 8 and a locking assembly 9 are respectively provided on the two sides of the guide assembly 7. The extrusion assembly 4 is used to extrude bamboo chips into balls. When the guide assembly 7 flips over through the two sides of the flip plate 6, it drives the guide plate 71 to guide the coal. The lifting assembly 8 is used to drive the grid plate 5 to rise and fall. The locking assembly 9 is used to lock the grid plate 5.

[0038] In addition, such as Figure 1As shown, the feeding assembly 3 also includes an auger 32 fixedly mounted on the feeding frame 31, through which coal is transported.

[0039] It is worth mentioning that, such as Figure 3 and Figure 7 As shown, the extrusion assembly 4 includes an opening 41 on the feeding frame 31, a fixed frame 42 fixedly mounted on the feeding frame 31, extrusion rollers 43 rotatably mounted on both sides of the fixed frame 42, a material box 44 fixedly mounted above the extrusion rollers 43, and active teeth 45 and passive teeth 46 fixedly mounted on the extrusion rollers 43. The active teeth 45 and passive teeth 46 mesh with each other. A drive device is fixedly connected to the active teeth 45, which drives the active teeth 45 to rotate. In use, when coal is being transported, the drive device drives the active teeth 45, passive teeth 46, and the two extrusion rollers 43 to rotate relative to each other, extruding the bamboo chips in the material box 44 into balls that fall onto the coal, thus mixing the biomass evenly and improving the combustion effect.

[0040] In addition, such as Figures 6 to 9 As shown, the single-unit guide assembly 7 also includes a chute 72 on the feeding frame 31, limiting grooves 73 on both sides of the chute 72, a rotating shaft 74 rotatably mounted on the feeding frame 31, a disc 75 fixedly mounted on the rotating shaft 74, a fixing plate 77 fixedly mounted on the feeding frame 31, a sliding rod 78 slidably mounted on the fixing plate 77, a connecting rod 79 hinged between the disc 75 and the sliding rod 78, and a sliding column 710 slidably mounted on the sliding rod 78. The rotating shaft 74 is fixedly connected to the flap 6, the sliding column 710 is fixedly connected to the guide plate 71, the grid plate 5 cooperates with the chute 72, and the guide plate 71 cooperates with the limiting grooves 73. In use, coal and bamboo chips are preferentially transported to the upper part of the frame under the action of the auger 32. At the center of the material frame 31, i.e. at the grating plate 5, coal and bamboo chips flow out from the gaps in the grating plate 5, which simultaneously blocks the coal and bamboo chips. Subsequently, the coal and bamboo chips flow to both sides of the material frame 31. When both sides are filled with coal and bamboo chips, they will push the flap 6 to flip outward. When one side is filled with coal and bamboo chips first, causing the flap 6 to rotate, it will drive the disc 75 to rotate, causing the connecting rod 79, the sliding rod 78, and the guide plate 71 to slide. This will cause the guide plate 71 to slide to that side, increasing the blocking surface for coal and bamboo chips on that side, allowing more coal and bamboo chips to flow to the other side of the material frame 31. When the other side is filled with coal and bamboo chips, the above actions are repeated. At this time, the flaps 6 on both sides are in the open state at the same time.

[0041] It needs to be emphasized that, such as Figure 8 and Figure 9As shown, the lifting assembly 8 includes a first rack 81 fixedly mounted on a slide bar 78 on one side, a first gear 82 rotatably mounted on a loading frame 31, a first connecting shaft 83 fixedly mounted on the first gear 82, a first bevel gear 84 fixedly mounted on the first connecting shaft 83, a second connecting shaft 85 rotatably mounted on the loading frame 31, a second bevel gear 86 and a second gear 87 fixedly mounted on both sides of the second connecting shaft 85, a connecting column 88 fixedly mounted on the grid plate 5, a lifting column 89 slidably mounted on the connecting column 88, and a fixed... A spring 810 is placed between the connecting column 88 and the lifting column 89; a fixing sleeve 811 is fixedly mounted on the lifting column 89; a telescopic rod 812 is fixedly mounted on the feeding frame 31; and a second rack 813 is fixedly mounted on the telescopic rod 812. A first bevel tooth 84 meshes with a second bevel tooth 86, a first rack 81 meshes with a first gear 82, and a second gear 87 meshes with the second rack 813. The telescopic rod 812 is fixedly connected to the fixing sleeve 811. The spring 810 is guided by the telescopic column, and the fixing sleeve 811... Connected to the movable part of the telescopic rod 812, during use, when the side flap 6 is opened first, the slide rod 78 drives the first rack 81 to slide, causing the first gear 82, the first bevel gear 84, the second bevel gear 86, and the second gear 87 to rotate. The second gear 87 drives the second rack 813 to slide, thereby causing the fixed sleeve 811 and the lifting column 89 to rise. At this time, the spring 810 is stretched. When the side is filled first, the lifting column 89 rises first, and the grid plate 5 is locked under the action of the locking component 9. Therefore, the grid plate 5... It will not rise. Then, when the other side is filled, the locking component 9 releases the lock on the grid plate 5. The grid plate 5 rises under the action of the spring 810. At this time, the flip plate 6 and the grid plate 5 release the obstruction of coal and bamboo chips, so that the coal and bamboo chips fall evenly on the steps. When the coal and bamboo chips on both sides of the feeding frame 31 are not filled and the flip plate 6 resets, it drives the grid plate 5 to fall and drives the guide plate 71 to reset. It can be automatically adjusted according to the amount of coal and bamboo chips until the amount of coal and bamboo chips in the middle and both sides of the feeding frame 31 is the same.

[0042] It should be further explained that, such as Figures 11 to 13As shown, the locking assembly 9 includes a locking groove 91 on the grid plate 5, a first hydraulic groove 92 on the inner wall of the loading frame 31, a second hydraulic groove 93 on the first hydraulic groove 92, a cylinder 94 fixedly mounted on the loading frame 31, a piston 95 slidably mounted inside the cylinder 94, a piston rod 96 fixedly mounted on the piston 95, a pin 97 slidably mounted inside the first hydraulic groove 92, and a hydraulic pipe 98 fixedly connected between the cylinder 94 and the second hydraulic groove 93. The piston rod 96 is fixedly connected to a sliding rod 78 on the other side. The pin 97 cooperates with the locking groove 91. A locking groove 91 is provided between the pin 97 and the first hydraulic groove 92. The device has a telescopic column with a spring fitted on it. The grating plate 5 is limited by a pin 97. In use, when the side flap 6 is opened first, the slide rod 78 drives the piston rod 96 to slide, which drives the piston 95 to draw back the hydraulic oil. At this time, the pin 97 slides out of the locking groove 91 under the action of the spring, thereby unlocking the grating plate 5. When this side is filled first, the pin 97 unlocks the grating plate 5. Then, when the other side is filled, the lifting column 89 rises, which can drive the grating plate 5 to rise at the same time. At this time, both the flap 6 and the grating plate 5 can no longer block the coal and bamboo chips, so that the coal and bamboo chips fall evenly on the steps.

[0043] It is worth mentioning that, such as Figure 12 and Figure 13 As shown, both the pin 97 and the piston 95 are made of rubber. In use, after the grille plate 5 rises, when the flap 6 on one side of the locking assembly 9 flips back to its original position, it will cause the pin 97 to slide and extend out of the first hydraulic groove 92. At this time, when the other side flips back to its original position, it will cause the grille plate 5 to fall. During the falling process, the locking groove 91 on the grille plate 5 will squeeze the pin 97, and the pin 97 will drive the hydraulic oil to squeeze the piston. Therefore, the pin 97 and the piston 95 are made of rubber. When the flap 6 remains stationary under the action of the torsion spring, the pin 97 and the piston 95 deform, so that the grille plate 5 falls smoothly and is locked.

[0044] Furthermore, such as Figure 8 As shown, a torsion spring is provided between the flap 6 and the feeding frame 31. When the fuel on both sides is insufficient, the flap 6 is reset under the action of the torsion spring, which drives the grid plate 5 to descend and block the fuel again.

[0045] Work process

[0046] When the coal is being transported, the drive unit rotates the active tooth 45, the passive tooth 46, and the two extrusion rollers 43 relative to each other, compressing the bamboo shavings in the feed box 44 into balls that fall onto the coal, thus mixing the biomass evenly. Under the action of the auger 32, the coal and bamboo shavings are preferentially transported to the middle of the feeding frame 31. As the coal and bamboo shavings flow out from the gaps in the grid plate 5, they are blocked. Subsequently, the coal and bamboo shavings flow to both sides of the feeding frame 31. When one side is filled with coal and bamboo shavings, causing the flap 6 to rotate, it drives the disc 75 to rotate, which in turn drives the connecting rod 79 and the sliding... The rod 78 and guide plate 71 slide, causing guide plate 71 to slide to this side, increasing the blocking surface for coal and bamboo chips on this side, allowing more coal and bamboo chips to flow to the other side of the feed frame 31. When the flap 6 on this side rotates and opens first, the sliding rod 78 drives the first rack 81 to slide, driving the first gear 82, the first bevel gear 84, the second bevel gear 86, and the second gear 87 to rotate. The second gear 87 drives the second rack 813 to slide, thereby driving the fixed sleeve 811 and the lifting column 89 to rise. At this time, the spring 810 is stretched. When this side is filled first, the lifting column 89... First, the grating plate 5 rises, locked by the locking assembly 9, preventing it from rising further. Then, once the other side is filled, the locking assembly 9 releases the lock on the grating plate 5, which rises under the action of the spring 810. At this point, both the flip plate 6 and the grating plate 5 release their obstruction of the coal and bamboo shavings, allowing them to fall evenly onto the steps. When the loading frame 31 is not fully filled with coal and bamboo shavings, causing the flip plate 6 to reset, it lowers the grating plate 5, resetting the guide plate 71. This adjustment is automatic based on the amount of coal and bamboo shavings until the loading frame 31... 1. The amount of coal and bamboo chips in the middle and both sides is the same; when the flap 6 on the other side rotates and opens first, the slide rod 78 drives the piston rod 96 to slide, which drives the piston 95 to draw back the hydraulic oil. At this time, the pin 97 slides out of the locking groove 91 under the action of the spring, thereby unlocking the grating plate 5. When this side is filled first, the pin 97 unlocks the grating plate 5. Then, when the other side is filled again, the lifting column 89 rises and drives the grating plate 5 to rise at the same time. At this time, both the flap 6 and the grating plate 5 remove their obstruction of coal and bamboo chips, so that coal and bamboo chips fall evenly on the steps.

[0047] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0048] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0049] The above description, in conjunction with the accompanying drawings, represents only preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention. These modifications and improvements should also be considered within the scope of protection of the present invention and will not affect the effectiveness and practicality of the present invention.

Claims

1. A biomass-uniformly mixed, energy-saving stepped combustion furnace, comprising a stepped furnace (1) and a feeding port (2) opened on one side of the stepped furnace (1), characterized in that: A feeding assembly (3) is provided on the feeding port (2). The feeding assembly (3) includes a feeding frame (31) for conveying coal. An extrusion assembly (4) is provided above the feeding frame (31). A grid plate (5) and a flip plate (6) are respectively provided in the middle and two sections of the output end of the feeding frame (31). A guide assembly (7) is provided on each of the flip plates (6). The guide assembly (7) includes a guide plate (71) slidably disposed on the grid plate (5), a chute (72) opened on the feeding frame (31), a limiting groove (73) opened on both sides of the chute (72), and a rotating shaft rotatably disposed on the feeding frame (31). 74), a disc (75) fixedly mounted on the rotating shaft (74), a fixed plate (77) fixedly mounted on the loading frame (31), a sliding rod (78) slidably mounted on the fixed plate (77), a connecting rod (79) hinged between the disc (75) and the sliding rod (78), and a sliding column (710) slidably mounted on the sliding rod (78). The rotating shaft (74) is fixedly connected to the flip plate (6), the sliding column (710) is fixedly connected to the guide plate (71), the grid plate (5) cooperates with the slide groove (72), the guide plate (71) cooperates with the limiting groove (73), and the guide components (7) on both sides are divided into The device is equipped with a lifting assembly (8) and a locking assembly (9). The lifting assembly (8) includes a first rack (81) fixedly mounted on a slide bar (78) on one side, a first gear (82) rotatably mounted on a loading frame (31), a first connecting shaft (83) fixedly mounted on the first gear (82), a first bevel gear (84) fixedly mounted on the first connecting shaft (83), a second connecting shaft (85) rotatably mounted on the loading frame (31), a second bevel gear (86) and a second gear (87) fixedly mounted on both sides of the second connecting shaft (85), a connecting column (88) fixedly mounted on the grid plate (5), and a locking assembly (9). The system includes a lifting column (89) on the connecting column (88), a spring (810) fixedly disposed between the connecting column (88) and the lifting column (89), a fixing sleeve (811) fixedly disposed on the lifting column (89), a telescopic rod (812) fixedly disposed on the loading frame (31), and a second rack (813) fixedly disposed on the telescopic rod (812). The first bevel tooth (84) meshes with the second bevel tooth (86), the first rack (81) meshes with the first gear (82), the second gear (87) meshes with the second rack (813), and the telescopic rod (812) is fixedly connected to the fixing sleeve (811).The locking assembly (9) includes a locking groove (91) on the grid plate (5), a first hydraulic groove (92) on the inner wall of the loading frame (31), a second hydraulic groove (93) on the first hydraulic groove (92), a cylinder (94) fixedly mounted on the loading frame (31), a piston (95) slidably mounted in the cylinder (94), a piston rod (96) fixedly mounted on the piston (95), a pin (97) slidably mounted in the first hydraulic groove (92), and a pin fixedly connected to the cylinder (94) and the second hydraulic groove (93). The hydraulic pipe (98) between the piston rod (96) and the slide rod (78) on the other side are fixedly connected. The pin (97) cooperates with the locking groove (91). Both the pin (97) and the piston (95) are made of rubber. The extrusion assembly (4) is used to extrude bamboo chips into balls. When the guide assembly (7) is flipped by the two side flaps (6), it drives the guide plate (71) to guide the coal. The lifting assembly (8) is used to drive the grid plate (5) to rise and fall. The locking assembly (9) is used to lock the grid plate (5).

2. The energy-saving stepped combustion furnace with uniform biomass mixing according to claim 1, characterized in that: The feeding assembly (3) also includes an auger (32) fixedly mounted on the feeding frame (31).

3. The energy-saving stepped combustion furnace with uniform biomass mixing according to claim 1, characterized in that: The extrusion assembly (4) includes an opening (41) on the feeding frame (31), a fixed frame (42) fixedly mounted on the feeding frame (31), an extrusion roller (43) rotatably mounted on both sides of the fixed frame (42), a material box (44) fixedly mounted above the extrusion roller (43), and active teeth (45) and passive teeth (46) fixedly mounted on the extrusion roller (43), wherein the active teeth (45) and passive teeth (46) mesh with each other.

4. The energy-saving stepped combustion furnace with uniform biomass mixing according to claim 1, characterized in that: A torsion spring is provided between the flap (6) and the feeding frame (31).

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