Gasification combustion fire grate and gasification combustion stove

Abstract

The gasification combustion fire grate comprises a fire grate body and a movable grate plate, the bottom wall of the fire grate body is provided with an air inlet ash falling hole, the movable grate plate is arranged on the inner bottom wall of the fire grate body, the movable grate plate is provided with a through hole, the through hole is communicated with the air inlet ash falling hole, and the air inlet ash falling hole is communicated with the air inlet ash falling hole. The movable grate plate can move to the communicating hole to be aligned with the air inlet ash falling hole so as to open the air inlet ash falling hole, or move to the communicating hole to be staggered with the air inlet ash falling hole so as to close the air inlet ash falling hole by the movable grate plate, natural combustion is performed in the fire grate body by opening the air inlet ash falling hole, and air inlet from the bottom of the fire grate body is stopped by closing the air inlet ash falling hole. And the movable grate plate is repeatedly pushed and pulled, so that the air inlet ash falling holes in the bottom of the fire grate body and the through holes in the movable grate plate form shearing action, and at the moment, ash in the fire grate body can be removed.

Description

Technical Field

[0001] This utility model belongs to the field of gasification combustion furnace technology, and particularly relates to a gasification combustion grate and a gasification combustion furnace. Background Technology

[0002] Currently, the air inlets on the bottom wall of existing grates serve a dual purpose: supplying primary air for fuel combustion and collecting ash. However, after a period of combustion, the ash inside the grate clogs these ash inlets, preventing the fuel from burning completely in an oxygen-deficient environment. Although the grate structures disclosed in documents CN219995349 U ("A Basin-Shaped Biomass Gasification Grate, Heating Stove and Heating Table") and CN220489179 U ("A Modular Air Inlet Grate and Low-NOx Combustion Device") rely solely on the fuel and ash at the bottom of the grate to passively close the air inlets, achieving gasification combustion but with poor controllability. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, one of the objectives of this utility model is to provide a gasification combustion grate with a simple structure that allows the air inlet and ash discharge holes to be opened or closed in a controllable manner.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A gasification combustion grate includes a grate body and a movable grate plate. The bottom wall of the grate body is provided with an air inlet and ash discharge hole. The movable grate plate is disposed on the inner bottom wall of the grate body. The movable grate plate is provided with a through hole. The movable grate plate can be moved to the point where the through hole is aligned with the air inlet and ash discharge hole to open the air inlet and ash discharge hole, or moved to the point where the through hole is misaligned with the air inlet and ash discharge hole to close the air inlet and ash discharge hole by the movable grate plate.

[0005] The beneficial effects of the above technical solution are as follows: by setting a movable grate plate on the inner bottom wall of the grate body, and setting an air inlet and ash drop hole on the bottom wall of the grate body, and setting a guide hole on the shielding plate, the shielding plate can be moved by human intervention until the guide hole is aligned with the air inlet and ash drop hole. At this time, the ash drop hole is opened, and the ash in the grate body can fall through the air inlet and ash drop hole and the guide hole. The movable grate plate can also be moved by human intervention until the guide hole is misaligned with the air inlet and ash drop hole. At this time, the air inlet and ash drop hole is closed by the movable grate plate. The fuel in the grate is pyrolyzed and gasified under high temperature and oxygen deficiency, and reacts violently with the air intake on the side wall, and is fully combusted, thereby realizing gasification combustion under autonomous control.

[0006] In the above technical solution, multiple air inlet ash discharge holes and through holes are provided and correspond one-to-one with each other. The multiple air inlet ash discharge holes are distributed on the bottom wall of the grate body, and the multiple through holes are distributed on the movable grate plate. The movable grate plate slides or rotates to open or close the air inlet ash discharge holes.

[0007] The beneficial effects of the above technical solution are as follows: each air intake dust collection hole and each guide hole is provided with a corresponding one-to-one connection. When the air intake dust collection hole is opened, each guide hole is aligned with the corresponding air intake dust collection hole. When the air intake dust collection hole is closed, all the guide holes are staggered from the air intake dust collection hole.

[0008] In the above technical solution, the grate body is a square groove, the movable grate plate is a square plate, the movable grate plate is slidably installed on the inner bottom wall of the grate body, and the movable grate plate can slide to open or close the air inlet and ash discharge hole.

[0009] The beneficial effect of the above technical solution is that: the grate body is set as a square groove, and the movable grate plate is a square plate, and its length or width is slightly smaller than the length or width of the inner bottom wall of the grate body (so as to reserve the movable grate plate with a certain amount of movement). At this time, the movable grate plate can be slidably set on the inner bottom wall of the grate body along the length or width direction.

[0010] In the above technical solution, the multiple air intake ash collection holes and the multiple through holes are arranged in rows or columns.

[0011] The beneficial effect of the above technical solution is that it allows the guide holes and air inlet ash discharge holes to be staggered or aligned when the movable grate slides.

[0012] In the above technical solution, the lower end of the grate body is provided with a straight-shaped limiting hole, and the lower end of the movable grate plate is provided with a limiting block that extends through the limiting hole to the grate body. Moving the limiting block causes the movable grate plate to slide along the length direction of the limiting hole in the grate body to open or close the air inlet ash discharge hole.

[0013] The beneficial effect of the above technical solution is that the sliding stroke of the movable grate plate on the bottom wall of the grate body can be limited by the limiting hole. When the limiting lever moves to abut against one end of the limiting hole, the movable grate plate opens the air inlet and ash outlet hole. When the limiting lever moves to abut against the other end of the limiting hole, the movable grate plate closes the air inlet and ash outlet hole.

[0014] In the above technical solution, the grate body is a circular groove, the movable grate plate is a circular plate, the movable grate plate is rotatably installed on the inner bottom wall of the grate body, and the movable grate plate can be rotated to open or close the air inlet and ash discharge hole.

[0015] The beneficial effects of the above technical solution are as follows: the grate body is set as a circular groove, and the movable grate plate is a circular plate and is rotatably installed in the grate body. At this time, the movable grate plate can be rotated to open or close the air inlet and ash discharge hole.

[0016] In the above technical solution, the multiple air intake ash collection holes and the multiple through holes are all distributed circumferentially at intervals.

[0017] The beneficial effect of the above technical solution is that the air intake and dust collection holes can be opened or closed by rotating the movable grate at a small angle.

[0018] In the above technical solution, the movable grate plate is coaxially rotatably connected to the bottom wall of the grate body, and an arc-shaped limiting hole is coaxially provided on the bottom wall of the grate body. The lower end of the movable grate plate is provided with a limiting block extending through the limiting hole. Moving the limiting block will drive the movable grate plate to rotate within the grate body.

[0019] The beneficial effect of the above technical solution is that the rotation angle of the movable grate is limited by the limiting hole. When the movable grate rotates to the point where the limiting block is at one end of the limiting hole, the air inlet and dust outlet are opened. When the limiting block rotates to the other end of the limiting hole, the air inlet and dust outlet are closed.

[0020] In the above technical solution, the grate body has a plurality of ventilation slots arranged circumferentially at intervals on its side wall, which communicate with the interior of the grate body. The lower end of each ventilation slot penetrates the lower end of the grate body, and the upper end of each ventilation slot is provided with an air inlet hole that penetrates the top of the grate body.

[0021] The beneficial effects of the above technical solution are as follows: the air below the grate body can flow upward through the ventilation slots and air inlets to form secondary air, while some airflow enters the grate body through the ventilation slots to form primary air.

[0022] The second objective of this invention is to provide a gasification combustion furnace with a simple structure that enables human-controlled gasification combustion.

[0023] To achieve the above objectives, the technical solution of this utility model is as follows: A gasification combustion furnace includes a furnace body and a gasification combustion grate as described above. The gasification combustion grate is disposed in the middle of the furnace body to divide the furnace cavity of the furnace body into a combustion chamber and a ash removal chamber distributed vertically. The side wall of the furnace body is also provided with an ash removal port communicating with the ash removal chamber and a fuel inlet communicating with the combustion chamber. A first door panel is provided at the ash removal port, and a second door panel is provided at the fuel inlet.

[0024] The advantages of the above technical solution are: its structure is simple, so the air inlet and ash discharge hole at the lower end of the grate body can be opened or closed by manually sliding or rotating the movable grate plate. Attached Figure Description

[0025] Figure 1 This is an elevation view of the gasification combustion grate described in Embodiment 1 of this utility model;

[0026] Figure 2 This is a bottom view of the gasification combustion grate described in Embodiment 1 of this utility model;

[0027] Figure 3 for Figure 2 A cross-sectional view of the middle AA section with the air inlet and dust collection hole in the open position;

[0028] Figure 4 for Figure 2 A cross-sectional view of point AA with the air inlet and dust collection hole closed;

[0029] Figure 5 This is a top view of the movable grate plate being removed from the grate body as described in Embodiment 1 of this utility model;

[0030] Figure 6 This is an elevation view of the gasification combustion grate described in Embodiment 2 of this utility model;

[0031] Figure 7 This is a top view of the gasification combustion grate described in Embodiment 2 of this utility model;

[0032] Figure 8 for Figure 7 Sectional view at point BB;

[0033] Figure 9 This is a bottom view of the gasification combustion grate described in Embodiment 2 of this utility model;

[0034] Figure 10 This is a bottom view of the movable grate plate described in Embodiment 2 of this utility model;

[0035] Figure 11 This is an elevation view of the grate body described in Embodiment 2 of this utility model;

[0036] Figure 12 This is one of the cross-sectional views of the gasification combustion furnace described in Embodiment 3 of this utility model;

[0037] Figure 13 This is a side view of the gasification combustion furnace described in Embodiment 3 of this utility model;

[0038] Figure 14 This is one of the elevation views of the furnace surface component described in Embodiment 3 of this utility model;

[0039] Figure 15 This is a second elevation view of the furnace surface component described in Embodiment 3 of this utility model;

[0040] Figure 16 This is a second cross-sectional view of the gasification combustion furnace described in Embodiment 3 of this utility model;

[0041] Figure 17 This is the third cross-sectional view of the gasification combustion furnace described in Embodiment 3 of this utility model.

[0042] In the diagram: 1. Gasification combustion grate; 11. Grate body; 111. Air inlet and ash collection hole; 112. Limiting hole; 113. Ventilation slot; 114. Air inlet; 12. Movable grate plate; 121. Guide hole; 122. Limiting block; 2. Furnace body; 21. Combustion chamber; 22. Ash removal chamber; 23. Ash removal port; 24. Furnace fuel inlet; 25. First door panel; 251. Ventilation hole; 252. Opening and closing plate; 26. Second door panel; 261. Observation window; 27. Furnace surface components; 271. Smoke exhaust chamber; 272. Chimney; 273. Smoke exhaust hole; 274. Guide bar; 28. Chamber; 281. Air inlet; 282. Air outlet; 29. ​​Oven compartment; 291. Third door panel; 210. Linkage rod; 3. Tabletop. Detailed Implementation

[0043] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will be more clearly described in light of the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0044] Example 1

[0045] like Figures 1-5As shown, this embodiment provides a gasification combustion grate, including a grate body 11 and a movable grate plate 12. The bottom wall of the grate body 11 is provided with air inlet and ash discharge holes 111. The movable grate plate 12 is disposed on the inner bottom wall of the grate body 11, and is provided with a through hole 121. The movable grate plate 12 can be moved until the through hole 121 is aligned with the air inlet and ash discharge holes 111 to open the air inlet and ash discharge holes, or moved until the through hole 121 is misaligned with the air inlet and ash discharge holes 111 to close the air inlet and ash discharge holes 111. By movably setting the movable grate plate on the inner bottom wall of the grate body, and providing air inlet and ash discharge holes on the bottom wall of the grate body, the movable grate plate... The grate is equipped with a guide hole. The movable grate can be manually moved until the guide hole aligns with the air inlet and ash outlet. At this point, the air inlet and ash outlet are opened, and ash from the grate body can fall through the air inlet and ash outlet and the guide hole. Alternatively, the movable grate can be manually moved until the guide hole and air inlet and ash outlet are misaligned. At this point, the air inlet and ash outlet are closed by the movable grate, preventing ash from being discharged downwards. Specifically, by opening the air inlet and ash outlet, natural combustion occurs within the grate body. Closing the air inlet and ash outlet stops the bottom air intake of the grate body, thus achieving gasification combustion. Repeatedly pushing and pulling the movable grate causes a shearing action between the air inlet and ash outlet at the bottom of the grate body and the guide hole on the movable grate, effectively removing ash from the grate body.

[0046] like Figures 1-5 As shown, in the above technical solution, multiple air intake ash discharge holes 111 and multiple through holes 121 are provided and correspond one-to-one with each other. The multiple air intake ash discharge holes 111 are evenly distributed on the bottom wall of the grate body 11, and the multiple through holes 121 are evenly distributed on the movable grate plate 12. The movable grate plate 12 slides or rotates to open or close the air intake ash discharge holes 111. In this way, multiple air intake ash discharge holes and multiple through holes are provided and correspond one-to-one with each other. When the air intake ash discharge hole is opened, each through hole is aligned with the corresponding air intake ash discharge hole. When the air intake ash discharge hole is closed, all the through holes are staggered from the air intake ash discharge hole.

[0047] In the above technical solution, the grate body 11 is a square groove, and the movable grate plate 12 is a square plate. The movable grate plate 12 is slidably installed on the inner bottom wall of the grate body 11. The movable grate plate 12 can slide to open or close the air inlet and ash discharge hole 111, thus setting the grate body as a square groove. At this time, the movable grate plate is a square plate, and its length or width is slightly smaller than the length or width of the inner bottom wall of the grate body (to reserve a movement margin for the movable grate plate). At this time, the movable grate plate can be slidably set on the inner bottom wall of the grate body along the length or width direction.

[0048] like Figure 5As shown, in the above technical solution, the multiple air inlet and dust collection holes 111 and the multiple through holes 121 are arranged in rows or columns, so that the through holes and air inlet and dust collection holes can be staggered or aligned when the movable grate slides.

[0049] In this embodiment, both the air inlet and ash discharge holes and the through holes can be strip-shaped holes. Taking the air inlet and ash discharge hole as an example, when the length direction of the air inlet and ash discharge hole is consistent with the length direction of the grate body, the movable grate plate can slide along the width direction of the grate body (at this time, the width of the movable grate plate is slightly smaller than the width of the grate body to allow for the movable grate plate to move). When the length direction of the air inlet and ash discharge hole is consistent with the width direction of the grate body, the movable grate plate can slide along the length direction of the grate body (at this time, the length of the movable grate plate is slightly smaller than the length of the grate body to allow for the movable grate plate to move).

[0050] like Figure 2 and Figure 5 As shown, in the above technical solution, the lower end of the grate body 11 is provided with a straight-shaped limiting hole 112, and the lower end of the movable grate plate 12 is provided with a limiting block 122 that extends through the limiting hole 112 to the outside of the grate body 11. Moving the limiting block 122 causes the movable grate plate 12 to slide along the length direction of the limiting hole 112 inside the grate body 11 to open or close the air inlet and ash discharge hole 111, so that the movable grate plate is on the bottom wall of the grate body. The sliding stroke can be limited by the limiting hole. When the limiting lever moves to abut against one end of the limiting hole, the movable grate opens the air intake and dust discharge hole. When the limiting lever moves to abut against the other end of the limiting hole, the movable grate closes the air intake and dust discharge hole. At this time, moving the limiting lever to one end or the other end of the limiting hole will open or close the air intake and dust discharge hole. The impact between the limiting lever and the two ends of the limiting hole can provide the operator with corresponding feedback signals (i.e., interactive feeling).

[0051] like Figures 1-5 As shown, in the above technical solution, the grate body 11 has a plurality of ventilation slots 113 arranged circumferentially at intervals on its side wall, which communicate with the interior of the grate body 11. The lower end of the ventilation slots 113 penetrates the lower end of the grate body 11, and the upper end of each ventilation slot 113 is provided with an air inlet 114 penetrating the top of the grate body 11. This allows the air below the grate body to flow upward through the ventilation slots and air inlets to form secondary air. At the same time, some airflow enters the grate body through the ventilation slots to form primary air. The arrangement of the ventilation slots and air inlets of the grate body can be similar to the structures disclosed in CN219995349U "A Basin-shaped Biomass Gasification Grate, Heating Stove and Heating Table" and CN220489179U "An Assembled Air Inlet Grate and Low-NOx Combustion Device".

[0052] In this embodiment, both sides of the movable grate plate in the sliding direction are comb-shaped, and the lower end of the ventilation groove extends to the edge of the bottom wall of the grate body. At this time, when the movable grate plate slides, it can squeeze the ash from the edge of the grate body to the lower end of the ventilation groove for discharge.

[0053] Example 2

[0054] Same as Example 1, except that, as Figures 6-11 As shown, in the above technical solution, the grate body 11 is a circular groove, the movable grate plate 12 is a circular plate, and the movable grate plate 12 is rotatably installed on the inner bottom wall of the grate body 11. The movable grate plate 12 can be rotated to open or close the air inlet and ash discharge hole 111. When the grate body is set as a circular groove, the movable grate plate is a circular plate and is rotatably installed in the grate body. At this time, the movable grate plate can be rotated to open or close the air inlet and ash discharge hole.

[0055] In the above technical solution, the multiple air inlet and dust collection holes 111 and the multiple through holes 121 are distributed circumferentially at intervals, so that the air inlet and dust collection holes can be opened or closed by rotating the movable grate at a small angle.

[0056] like Figures 8-11 As shown, in the above technical solution, the movable grate plate 12 is coaxially rotatably connected to the bottom wall of the grate body 11, and an arc-shaped limiting hole 112 is coaxially provided on the bottom wall of the grate body 11. The lower end of the movable grate plate 12 is provided with a limiting block 122 extending through the limiting hole 112. Moving the limiting block 122 causes the movable grate plate 12 to rotate within the grate body 11, so that the rotation angle of the movable grate plate is limited by the limiting hole. When the movable grate plate rotates to the point where the limiting block is at one end of the limiting hole, the air intake and ash discharge hole is opened. When the limiting block rotates to the other end of the limiting hole, the air intake and ash discharge hole is closed.

[0057] In this embodiment, two limit blocks and two limit holes can be provided, and the two limit blocks and two limit holes are distributed symmetrically.

[0058] In this embodiment, the edge of the movable grate plate is serrated in the circumferential direction. When the movable grate plate rotates, it can also squeeze the ash at the bottom edge of the grate body to be discharged through the lower end of the ventilation slot.

[0059] like Figure 11 As shown, in this embodiment, the air inlet dust collection hole can extend to communicate with the ventilation slot.

[0060] Example 3

[0061] like Figures 12-17As shown, this embodiment provides a gasification combustion stove, including a furnace body 2 and a gasification combustion grate 1 as described in Embodiment 1 or Embodiment 2. The gasification combustion grate 1 is disposed in the middle of the furnace body 2 to divide the furnace cavity of the furnace body 2 into a combustion chamber 21 and an ash removal chamber 22 distributed vertically. The side wall of the furnace body 2 is also provided with an ash removal port 23 communicating with the ash removal chamber 22 and a fuel inlet 24 communicating with the combustion chamber 21. A first door plate 25 is provided at the ash removal port 23 and a second door plate 26 is provided at the fuel inlet 24. Its structure is simple, so that the air inlet and ash drop hole at the lower end of the grate body can be opened or closed by manually sliding or rotating the movable grate plate.

[0062] In this embodiment, a vent 251 and an opening / closing plate 252 are provided at the first door panel 25. The opening / closing plate 252 can be a straight strip hole. When the first door panel 25 is closed, the amount of air entering the furnace can be adjusted by adjusting the opening and closing amount of the vent 251.

[0063] In this embodiment, an observation window 261 (with transparent fire-resistant glass embedded in the observation window) can be provided on the second door panel. When the second door panel is closed, the combustion situation in the combustion chamber can be observed through the observation window.

[0064] In this embodiment, both the first door panel and the second door panel are rotatably mounted on the furnace body.

[0065] like Figure 12 , Figure 14 and Figure 15 As shown, in this embodiment, the upper end of the combustion chamber of the gasification combustion furnace can also be fitted with a furnace surface component 27. The two ends of the furnace surface component 27 are flared in a trumpet shape, while the middle is narrowed to form an annular groove. At this time, the annular groove and the furnace body enclose an annular exhaust chamber 271. The furnace body has a chimney 272 that communicates with the exhaust chamber. The flared part of the upper part of the furnace surface component 27 is provided with exhaust holes 273 that communicate with the exhaust chamber at intervals in the circumferential direction. The inner wall of the flared part of the lower part of the furnace surface component 27 is provided with multiple guide strips 274 that are circumferentially spaced and inclined, and the multiple guide strips 274 are inclined in the same direction in the circumferential direction.

[0066] like Figure 16 As shown, in this embodiment, the furnace wall of the furnace body 2 can be configured as a sandwich structure (with a cavity 28 in the sandwich). The lower end of the furnace body is provided with an air inlet 281 communicating with the cavity, and the upper end of the furnace body is provided with an air outlet 282 communicating with the cavity. At this time, gas exchange can be carried out in the cavity to provide external heating (at this time, the gasification combustion furnace can also be considered as a fireplace).

[0067] like Figure 17As shown, further, an oven compartment 29 can be installed or embedded on the side wall of the oven body, and the oven compartment 29 has an opening and a third door panel 291 is provided at the opening. At this time, the oven compartment can be used as an oven.

[0068] like Figure 17 As shown, a tabletop 3 can be added to the upper end of the furnace body, in which case the gasification combustion furnace can be used as a heating stove.

[0069] The furnace body described in this embodiment can be a cylindrical furnace or a cuboid furnace, which will not be elaborated here.

[0070] like Figure 12 and Figure 13 As shown, in this embodiment, a linkage rod 210 can also be installed through the furnace body. One end of the linkage rod 210 is located in the ash cleaning chamber 22 and is movably connected to the lower end of the limiting block 122 (it can be hinged; in embodiment 2, there are two limiting blocks, and the linkage rod can be movably connected to any one of the limiting blocks). The operator can drive the movable grate plate to slide or rotate in the grate body by pushing and pulling the linkage rod.

[0071] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A gasification combustion grate, characterized in that, The system includes a grate body (11) and a movable grate plate (12). The bottom wall of the grate body (11) is provided with an air inlet and ash discharge hole (111). The movable grate plate (12) is provided on the inner bottom wall of the grate body (11). The movable grate plate (12) is provided with a through hole (121). The movable grate plate (12) can be moved to align the through hole (121) with the air inlet and ash discharge hole (111) to open the air inlet and ash discharge hole, or moved to offset the through hole (121) from the air inlet and ash discharge hole (111) so that the movable grate plate (12) can close the air inlet and ash discharge hole (111).

2. The gasification combustion grate according to claim 1, characterized in that, Multiple air intake ash discharge holes (111) and multiple through holes (121) are provided and correspond one-to-one with each other. Multiple air intake ash discharge holes (111) are evenly distributed on the bottom wall of the grate body (11), and multiple through holes (121) are evenly distributed on the movable grate plate (12). The movable grate plate (12) slides or rotates to open or close the air intake ash discharge holes (111).

3. The gasification combustion grate according to claim 2, characterized in that, The grate body (11) is a square groove, and the movable grate plate (12) is a square plate. The movable grate plate (12) is slidably installed on the inner bottom wall of the grate body (11). The movable grate plate (12) can slide to open or close the air inlet ash discharge hole (111).

4. The gasification combustion grate according to claim 3, characterized in that, The multiple air intake dust collection holes (111) and the multiple through holes (121) are arranged in rows or columns.

5. The gasification combustion grate according to claim 3, characterized in that, The lower end of the grate body (11) is provided with a straight-shaped limiting hole (112), and the lower end of the movable grate plate (12) is provided with a limiting block (122) that extends out of the grate body (11) through the limiting hole (112). Moving the limiting block (122) causes the movable grate plate (12) to slide along the length direction of the limiting hole (112) inside the grate body (11) to open or close the air inlet ash discharge hole (111).

6. The gasification combustion grate according to claim 2, characterized in that, The grate body (11) is a circular groove, and the movable grate plate (12) is a circular plate. The movable grate plate (12) is rotatably installed on the inner bottom wall of the grate body (11). The movable grate plate (12) can be rotated to open or close the air inlet ash discharge hole (111).

7. The gasification combustion grate according to claim 6, characterized in that, The multiple air intake dust collection holes (111) and the multiple through holes (121) are all distributed circumferentially at intervals.

8. The gasification combustion grate according to claim 7, characterized in that, The movable grate plate (12) is coaxially rotatably connected to the bottom wall of the grate body (11), and an arc-shaped limiting hole (112) is coaxially provided on the bottom wall of the grate body (11). The lower end of the movable grate plate (12) is provided with a limiting block (122) extending through the limiting hole (112). Moving the limiting block (122) will drive the movable grate plate (12) to rotate inside the grate body (11).

9. The gasification combustion grate according to any one of claims 1-8, characterized in that, The grate body (11) has a plurality of ventilation slots (113) arranged circumferentially at intervals on its side wall, which communicate with the interior of the grate body (11). The lower end of each ventilation slot (113) penetrates the lower end of the grate body (11), and the upper end of each ventilation slot (113) is provided with an air inlet (114) that penetrates the top of the grate body (11).

10. A gasification combustion stove, characterized in that, The furnace includes a furnace body (2) and a gasification combustion grate (1) as described in any one of claims 1-9. The gasification combustion grate (1) is located in the middle of the furnace body (2) to divide the furnace cavity of the furnace body (2) into a combustion chamber (21) and a cleaning chamber (22) distributed vertically. The side wall of the furnace body (2) is also provided with a cleaning port (23) communicating with the cleaning chamber (22) and a fuel inlet (24) communicating with the combustion chamber (21). A first door plate (25) is provided at the cleaning port (23) and a second door plate (26) is provided at the fuel inlet (24).

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