Combustion furnace

Abstract

The invention discloses a combustion furnace, and relates to the technical field of heating equipment, the combustion furnace comprises an outer supporting mechanism, an inner supporting mechanism and a through-flow assembly, the outer supporting mechanism comprises a shell and a base plate, the shell defines a hollow cylinder, the base plate is located on the bottom side of the shell, and a plurality of air inlet holes are formed in the peripheral wall of the base plate; the inner supporting mechanism comprises an inner container shell, a flow guide assembly, a heat insulation assembly and a tray assembly, the inner container shell is arranged in the hollow cylinder defined by the outer shell, an air flow cavity is formed between the inner container shell and the outer shell, the inner container shell is arranged around the central axis of the inner container shell, and the tray assembly is arranged in the air flow cavity. The flow guide assembly, the heat insulation assembly and the tray assembly are sequentially arranged from bottom to top along the central axis of the inner container shell, the heat insulation assembly and the tray assembly are installed in the interior defined by the inner container shell, and the flow guide assembly is in lap joint between the outer shell and the base plate. And sufficient combustion of the fuel in the combustion furnace is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of heating equipment, and specifically to a combustion furnace. Background Art

[0002] Generally, a combustion furnace is provided with multiple air flow channels to make the oxygen mixing more sufficient during combustion, so that the fuel burns more fully, thereby reducing the generation of black smoke during combustion, saving energy and protecting the environment, and reducing pollution emissions.

[0003] When the existing furnace body is set, a ventilation pipe is arranged inside the inner layer furnace body, and several groups of inner air inlet holes with different heights corresponding to the central axis of the ventilation pipe are arranged on the part of the ventilation pipe above the fuel rack. The inner air inlet holes are communicated with the outer air inlet holes to realize multi-stage ventilation and oxygen supply for the flame in the furnace inside the inner layer furnace body, maximize the air permeability of the smokeless furnace body, avoid incomplete combustion and the generation of black smoke caused by the blockage of the air inlet channel of the inner layer furnace body by fuel ashes, improve the combustion efficiency of the fuel, and reduce the generation of smoke.

[0004] However, in actual use, it is also found that when there is too much fuel accumulated on the fuel rack or too much accumulated ash, it will hinder part of the air flow from entering the inner layer furnace body, and it will still cause incomplete combustion and the problem of generating black smoke. Summary of the Invention

[0005] The purpose of the present invention is to provide a combustion furnace to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A combustion furnace, comprising an outer support mechanism, an inner support mechanism and a flow-through component; The outer support mechanism includes a housing and a chassis. The housing encloses a hollow cylinder, and the chassis is located on the bottom side of the housing. A plurality of air inlet holes are provided on the peripheral wall of the chassis; The inner support mechanism includes an inner liner shell, a flow guiding component, a heat insulation component and a tray component. The inner liner shell is placed inside the hollow cylinder enclosed by the housing. An air flow cavity is formed between the inner liner shell and the housing. The inner liner shell is arranged around its central axis. The flow guiding component, the heat insulation component and the tray component are arranged in order from bottom to top along the central axis of the inner liner shell, and the heat insulation component and the tray component are installed inside the inner liner shell. The flow guiding component is lapped between the housing and the chassis. An inflow cavity is formed between the flow guiding component and the chassis. An expansion cavity is formed between the flow guiding component and the heat insulation component. A gas supply cavity is formed between the heat insulation component and the tray component. A combustion cavity is formed in the space above the tray component; The flow-through component includes a number of first drainage holes, a number of second drainage holes, and a number of third drainage holes opened on the inner liner shell. The number of first drainage holes, the number of second drainage holes, and the number of third drainage holes are arranged in an orderly manner from bottom to top along the central axis of the inner liner shell. The heat insulation component is abutted between the number of first drainage holes and the number of second drainage holes. The first drainage hole is connected to the flow expansion chamber and the air flow chamber. The second drainage hole is connected to the air supply chamber and the air flow chamber. The third drainage hole is located at the upper position of the combustion chamber and communicates with the air flow chamber.

[0007] The present invention further illustrates that the diversion component includes a third main board, third side boards, a number of annular slot holes, a number of second connecting plates, a number of connecting holes, and cooling holes; The central axis of the inner liner shell overlaps with the central axis of the outer shell, and the outer diameter of the inner liner shell is smaller than the inner diameter of the outer shell; The third side boards protrude upward and are fixed to the side of the third main board, and are embedded in the inner wall at the lower end of the outer shell. A number of annular slot holes are arrayed on the surface of the third main board with the center of the third main board as the center of the circle, so that the air flow chamber communicates with the inflow chamber. A number of connecting holes are staggered between every two adjacent annular slot holes. A number of second connecting plates are fixedly connected to the bottom of the inner liner shell and are threadedly connected to the connecting holes located below it.

[0008] The present invention further illustrates that the heat insulation component includes a fourth main board and fourth side boards; The fourth side boards protrude downward and are fixed to the side of the fourth main board, and are fixed to the inner wall of the inner liner shell between the first drainage holes and the second drainage holes to separate the inflow chamber and the air supply chamber; A filter screen is fixedly connected to the outside of a number of second drainage holes.

[0009] The present invention further illustrates that the tray component includes a fifth main board, multiple groups of strengthening structures, fifth side boards, and multiple groups of diversion holes; The fifth side boards protrude upward and are fixed to the side of the fifth main board. Each group of diversion holes has a number of them. The multiple groups of strengthening structures and the multiple groups of diversion holes are uniformly arrayed in an orderly manner from the center of the fifth main board to the side of the fifth main board, and the multiple groups of strengthening structures and the multiple groups of diversion holes are staggered. The strengthening structures are concave on the upper surface of the fifth main board and convex on the lower surface of the fifth main board.

[0010] The present invention further illustrates that a group of support plates are supported and connected below the side of the tray component. The group of support plates are in an inverted L shape. The side of the support plate is fixedly connected to the inner wall of the inner liner shell, and the fixed position is higher than the position of the second drainage holes.

[0011] The present invention further illustrates that a second handle component is installed in the middle of the tray component. The second handle component includes a second locking nut, a locking bolt, and a second handle; The second handle is arranged in a ring shape, and the locking bolt is fixed at the central bottom of the second handle. The locking bolt penetrates through the fifth main board and is threadedly connected to the second locking nut.

[0012] The present invention further illustrates that a locking component is arranged in the air flow cavity. The locking component includes a number of first locking holes, a number of second locking holes, a number of third connecting plates and a number of first locking nuts; A number of first locking holes and a number of second locking holes are both opened on the inner wall of the inner liner shell and are arranged in an up-and-down corresponding manner. The first locking holes are located above the third drainage holes, and the second locking holes are located above the tray assembly. The third connecting plates are arranged corresponding to the first locking holes and the second locking holes one by one. The side of the third connecting plate away from the inner liner shell is fixedly connected to the inner wall of the outer shell. The sides of the third connecting plate close to the inner liner shell are respectively locked and connected to the first locking holes and the second locking holes by the first locking nuts.

[0013] The present invention further illustrates that a combustion furnace further includes an upper ring assembly. The upper ring assembly includes a second main board, a first side board, a number of first connecting plates and a second side board; The surface of the second main board located above the inner liner shell is open and forms an inner side edge. The first side board and the second side board respectively protrude downward and are fixedly connected to the outer side edge and the inner side edge of the second main board. The top of the outer shell is embedded at the connection of the second main board and the first side board. The top of the inner liner shell is embedded at the connection of the second main board and the second side board. A number of first connecting plates are evenly fixed to the bottom surface of the second main board. The other side surface of the second main board is threadedly fixed to the surface of the inner liner shell.

[0014] The present invention further illustrates that a cover plate assembly is further arranged on the top of the upper ring assembly. The cover plate assembly includes a first main board and a first rolling layer; The first rolling layer is fixed to the side of the first main board and is erected on the upper surface of the second main board. A group of fixing pieces are fixed to the lower surface of the first main board. The fixing pieces are in an inverted L shape, and their sides are located inside the second side board.

[0015] The present invention further illustrates that a first handle assembly is installed in the middle of the first main board. The first handle assembly includes a placement bin, a first handle and a handle board; The placement bin is opened in the middle of the first main board. The handle board is fixedly arranged inside the placement bin and is rotatably connected to the first handle, and the first handle can be placed inside the placement bin.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: The present invention forms an inlet flow chamber, a diffuser chamber, a combustion chamber, and a gas supply chamber by arranging a chassis, a flow guiding assembly, a heat insulation assembly, and a tray assembly in an orderly manner from bottom to top. Under the action of natural convection and pressure difference, cold air in the external space passes through a plurality of air inlet holes and sequentially enters the combustion chamber through the inlet flow chamber, the diffuser chamber, and the gas supply chamber to supplement the space after the hot air rises and maintain the oxygen supply required for combustion. According to the present invention, through a plurality of first drainage holes, a plurality of second drainage holes, and a plurality of third drainage holes arranged on the inner liner shell, when the fuel burns, the air flow entering the inlet flow chamber is divided into two air flows; one of the air flows enters the diffuser chamber through the cooling holes, on the one hand, cooling the bottom surface of the heat insulation assembly, and on the other hand, filling the diffuser chamber with cold air flow and being able to be evenly ejected from the first drainage holes to assist sufficient and uniform cold air to enter the interior of the inner liner shell, so that the fuel can burn sufficiently; the other air flow is dispersed into multiple air flows and enters the air flow chamber above it, and the original one air flow is combined to form a combined air flow, which enters the combustion chamber to continuously supply oxygen to the fuel; another part of the combined air flow rises to the third drainage holes and enters the space above the tray assembly, and the relatively low-temperature part of the combined air flow sinks and performs secondary combustion on the fuel to fully burn the fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the present invention Figure 1 structural explosion schematic diagram; Figure 3 is the present invention Figure 2 magnified schematic diagram of area A; Figure 4 is the structural explosion schematic diagram of the inner support mechanism of the present invention; Figure 5 is the present invention Figure 4 magnified schematic diagram of area B; Figure 6 is the structural schematic diagram of the tray assembly of the present invention; Figure 7 is the present invention Figure 6 bottom view structural schematic diagram; Figure 8 is the bottom view structural schematic diagram of the inner liner shell of the present invention; Figure 9 is the present invention Figure 1 sectional schematic diagram; Figure 10 is the present invention Figure 9 magnified schematic diagram of area C; Figure 11 It is a schematic bottom-up view of the structure of the cover plate assembly of the present invention; Figure 12 It is a schematic diagram of the present invention; In the figure: 1. Outer shell; 2. Chassis; 3. Cover plate assembly; 301. First main board; 302. First winding layer; 303. Fixed piece; 4. First handle assembly; 401. Placing bin; 402. First handle; 403. Handle board; 5. Air inlet hole; 6. Upper ring assembly; 601. Second main board; 602. First side plate; 603. First connecting plate; 604. Second side plate; 7. Inner tank shell; 8. Flow guiding assembly; 801. Third main board; 802. Third side plate; 803. Annular slot hole; 804. Second connecting plate; 805. Connecting hole; 806. Cooling hole; 9. Locking assembly; 901. First locking hole; 902. Second locking hole; 903. Third connecting plate; 904. First locking nut; 10. Flow through assembly; 1001. First drainage hole; 1002. Second drainage hole; 1003. Third drainage hole; 11. Heat insulation assembly; 1101. Fourth main board; 1102. Fourth side plate; 12. Tray assembly; 1201. Fifth main board; 1202. Reinforcing structure; 1203. Fifth side plate; 1204. Drainage hole; 13. Fire hook; 14. Second handle assembly; 1401. Second locking nut; 1402. Locking bolt; 1403. Second handle; 15. Support plate; 16. Filter screen. Detailed implementation manners

[0018] The technical solution of the present invention will be further described in detail and non-restrictively below in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Example 1, please refer to Figures 1-12 , the present invention provides a technical solution: A combustion furnace includes an outer support mechanism and an inner support mechanism to form a furnace body structure; Further, the outer support mechanism includes a housing 1 and a chassis 2. The housing 1 encloses a hollow cylinder, and the chassis 2 is located on the bottom side of the housing 1. A plurality of air inlet holes 5 are formed in the peripheral wall of the chassis 2. Specifically, the chassis 2 is placed on a flat ground to ensure the stability of the furnace body during the combustion process. The interior of the housing 1 is used to place fuel and conduct combustion inside the furnace body, and the plurality of air inlet holes 5 are for the inflow of cold air from the external space.

[0020] The inner support mechanism includes an inner liner shell 7, a flow guiding component 8, a heat insulation component 11, and a tray component 12. The inner liner shell 7 is placed inside the hollow cylinder enclosed by the housing 1. Among them, the central axis of the inner liner shell 7 coincides with the central axis of the housing 1, and the outer diameter of the inner liner shell 7 is smaller than the inner diameter of the housing 1. An air flow cavity is formed between the inner liner shell 7 and the housing 1 to assist in the circulation and flow of multiple air flows. The inner liner shell 7 is arranged around its central axis. The flow guiding component 8, the heat insulation component 11, and the tray component 12 are arranged in order from bottom to top along the central axis of the inner liner shell 7. Moreover, the heat insulation component 11 and the tray component 12 are installed inside the inner liner shell 7. The flow guiding component 8 is lapped between the housing 1 and the chassis 2. An inlet flow cavity is formed between the flow guiding component 8 and the chassis 2, a diffuser cavity is formed between the flow guiding component 8 and the heat insulation component 11, a gas supply cavity is formed between the heat insulation component 11 and the tray component 12, and a combustion cavity is formed in the space above the tray component 12; The tray component 12 is used to place the required fuel. After the fuel is ignited, the air temperature around it rises and the density decreases. The formed hot air rises and flows out from above the combustion cavity. Under the action of natural convection and pressure difference, the cold air in the external space passes through the plurality of air inlet holes 5 and sequentially enters the combustion cavity through the inlet flow cavity, the diffuser cavity, and the gas supply cavity to supplement the space after the hot air rises and maintain the oxygen supply required for combustion to ensure the continuous progress of combustion.

[0021] The flow guiding component 8 includes a third main board 801, third side boards 802, a plurality of annular slot holes 803, a plurality of second connecting plates 804, a plurality of connecting holes 805, and cooling holes 806. The third side boards 802 protrude upward and are fixed to the side of the third main board 801 and are embedded in the lower inner wall of the housing 1. The plurality of annular slot holes 803 are arrayed on the surface of the third main board 801 with the center of the third main board 801 as the center of the circle, so that the air flow cavity is communicated with the inlet flow cavity. The plurality of connecting holes 805 are staggered between every two adjacent annular slot holes 803. The plurality of second connecting plates 804 are fixedly connected to the bottom of the inner liner shell 7 and are threadedly connected to the connecting holes 805 located below it. The cooling holes 806 are formed in the middle of the third main board 801; The combustion furnace also includes a flow assembly 10 including a plurality of first drainage holes 1001, a plurality of second drainage holes 1002 and a plurality of third drainage holes 1003 opened on the shell of the inner shell 7, the plurality of first drainage holes 1001, the plurality of second drainage holes 1002 and the plurality of third drainage holes 1003 are arranged in order from bottom to top along the central axis of the inner shell 7, the heat insulation assembly 11 is adjacent to the plurality of first drainage holes 1001 and the plurality of second drainage holes 1002, the first drainage holes 1001 are connected to the expansion chamber and the airflow chamber, the second drainage holes 1002 are connected to the air supply chamber and the airflow chamber, and the third drainage holes 1003 are located at the upper position of the combustion chamber and communicated with the airflow chamber; a filter screen 16 is fixedly connected to the outer side of the plurality of second drainage holes 1002 to prevent ash from entering the airflow chamber, the inlet chamber and the expansion chamber, so as to ensure the cleanliness of the furnace and the normal flow of the airflow; refer to Figure 2 , Figure 4 When installing the inner shell 7, firstly align the second connecting plate 804 with the connecting hole 805 on the third main board 801, and then tighten the thread to complete the preliminary tightening process of the inner shell 7; The outer shell 1 is sleeved on the outer wall of the inner shell 7. When the fuel is burning, the airflow entering the inlet cavity is divided into two airflows; one of the airflows enters the expansion cavity through the cooling hole 806, which cools the bottom surface of the heat insulation component 11 on the one hand, and fills the expansion cavity with cold air flow on the other hand, and can be evenly sprayed out from the first guide hole 1001, which is equivalent to opening another flow channel for the circulation of cold air flow, assisting sufficient and uniform cold air to enter the interior of the inner shell 7, so that the fuel can be fully burned; the other airflow is dispersed into multiple airflows, which enter the expansion cavity through the annular slot 803 respectively. The fused airflow enters the air flow cavity above it, merges with the airflow uniformly ejected from the first guide hole 1001 to form a fused airflow, and then enters the air supply cavity through the second guide hole 1002 simultaneously. Most of the fused airflow enters the combustion cavity through the tray assembly 12 to continuously supply oxygen to the fuel; another part of the fused airflow rises to the third guide hole 1003 and enters the space above the tray assembly 12. This part of the fused airflow with a lower temperature will sink after entering the space above the tray assembly 12, and the oxygen in the sinking airflow will cause secondary combustion of the fuel, thereby fully burning the fuel.

[0022] The heat insulation component 11 includes a fourth main board 1101 and a fourth side board 1102; the fourth side board 1102 protrudes downward and is fixed to the side of the fourth main board 1101, and is fixed to the inner wall of the inner shell 7 between the first drainage hole 1001 and the second drainage hole 1002, so as to separate the inlet cavity and the air supply cavity; the heat insulation component 11 isolates the heat generated in the upper combustion cavity as much as possible, ensures the low temperature effect of the air flow in the inlet cavity and the expansion cavity, so that the fuel can be fully supplied with oxygen for combustion and secondary combustion in the subsequent combustion; In addition, the fuel ash leaking from the tray 12 can also be carried and collected, which is beneficial to the subsequent cleaning of the furnace.

[0023] Reference Figure 6 Figure 6 , the tray assembly 12 includes a fifth main board 1201, multiple groups of strengthening structures 1202, a fifth side plate 1203, and multiple groups of diversion holes 1204; the fifth side plate 1203 protrudes upward and is fixed to the side of the fifth main board 1201, each group of diversion holes 1204 is provided with several, and the multiple groups of strengthening structures 1202 and the multiple groups of diversion holes 1204 are orderly arrayed uniformly toward the side of the fifth main board 1201 with the center of the fifth main board 1201 as the center, and the multiple groups of strengthening structures 1202 and the multiple groups of diversion holes 1204 are arranged in an alternating manner. The strengthening structure 1202 is concave on the upper surface of the fifth main board 1201 and convex on the lower surface of the fifth main board 1201, effectively improving the strength and support stability of the board member for the fifth main board 1201 after opening holes; Further, the fifth side plate 1203 bears the fuel. The fifth side plate 1203 is arranged on the side of the fifth main board 1201, which can effectively divide the placement area of the fuel. In addition, when taking and placing the tray assembly 12 and its burned fuel, the fuel range is limited, and the fuel is prevented from slipping out as much as possible; during the combustion process, most of the fusion air flow enters the combustion chamber through the diversion holes 1204, so that oxygen can fully contact the fuel for combustion and heat supply.

[0024] Example 2, reference Figure 8 、 Figure 9 Figure 9 , on the basis of Example 1, the following structure is added. A group of support plates 15 are supported and connected to the lower side of the side of the tray assembly 12. A group of support plates 15 are in an inverted L shape to stably support the tray assembly 12; The side of the support plate 15 is fixedly connected to the inner wall of the inner tank shell 7, and the fixed position is higher than the position of the second drainage hole 1002 to avoid interfering with the flow of air.

[0025] Example 3, reference Figure 7 Figure 7 , on the basis of Example 2, the following structure is added. A second handle assembly 14 is installed in the middle of the tray assembly 12. The second handle assembly 14 includes a second locking nut 1401, a locking bolt 1402, and a second handle 1403 to assist in taking and placing the tray assembly 12; The second handle 1403 is arranged in a ring shape. The locking bolt 1402 is fixed at the center of the bottom of the second handle 1403. The locking bolt 1402 passes through the fifth main board 1201 and is threadedly connected to the second locking nut 1401 to realize the fastening connection between the second handle 1403 and the fifth main board 1201; A fire hook 13 is equipped outside the combustion furnace and is used in cooperation with the tray assembly 12. When taking and placing the tray assembly 12, the second handle 1403 is hooked by the fire hook 13 to avoid dirt or burns.

[0026] Example 4, referenceFigure 3 , Figure 8 , on the basis of Embodiment 3, the following structure is added. A locking assembly 9 is arranged in the air flow cavity. The locking assembly 9 includes a plurality of first locking holes 901, a plurality of second locking holes 902, a plurality of third connecting plates 903 and a plurality of first locking nuts 904; The plurality of first locking holes 901 and the plurality of second locking holes 902 are both arranged on the inner wall of the inner tank shell 7 and are arranged in an up-and-down corresponding manner. The first locking holes 901 are located above the third drainage holes 1003, and the second locking holes 902 are located above the tray assembly 12. The third connecting plates 903 are arranged corresponding to the first locking holes 901 and the second locking holes 902 one by one. The side of the third connecting plate 903 away from the inner tank shell 7 is fixedly connected to the inner wall of the outer shell 1, and the sides of the third connecting plate 903 close to the inner tank shell 7 are respectively locked and connected to the first locking holes 901 and the second locking holes 902 by the first locking nuts 904.

[0027] In this embodiment, to improve the connection stability between the inner tank shell 7 and the outer shell 1, after preliminary fastening is completed in advance, through the locking assembly 9, the first locking holes 901 and the second locking holes 902 are respectively aligned with the third connecting plates 903, and the first locking nuts 904 are used for locking to realize the secondary fastening process between the inner tank shell 7, the diversion assembly 8 and the outer shell 1.

[0028] Embodiment 5, refer to Figure 8 , Figure 10 , on the basis of Embodiment 4, the following structure is added. The combustion furnace further includes an upper ring assembly 6. The upper ring assembly 6 includes a second main board 601, a first side board 602, a plurality of first connecting plates 603, and a second side board 604. The surface of the second main board 601 located above the inner tank shell 7 is open and forms an inner side edge. The first side board 602 and the second side board 604 respectively protrude downward and are fixed to the outer side edge and the inner side edge of the second main board 601. The top of the outer shell 1 is embedded at the connection of the second main board 601 and the first side board 602, and the top of the inner tank shell 7 is embedded at the connection of the second main board 601 and the second side board 604. The plurality of first connecting plates 603 are evenly fixed to the bottom surface of the second main board 601, and the other side surface of the second main board 601 is threadedly fixed to the surface of the inner tank shell 7; wherein the first side board 602 and the second side board 604 laterally limit the side wall positions of the inner tank shell 7 and the outer shell 1 that form the air flow cavity, and the second main board 601 and the third main board 801 longitudinally limit the top and bottom of the inner tank shell 7 and the outer shell 1 that form the air flow cavity, realizing precise limitation of the installation position of the outer shell 1. In addition, the second main board 601 shields the top of the air flow cavity, so that a small part of the above-mentioned fused air flow can effectively enter the third drainage holes 1003 to perform the above-mentioned secondary combustion process.

[0029] A cover plate assembly 3 is further arranged on the top of the upper ring assembly 6. The cover plate assembly 3 includes a first main board 301 and a first winding layer 302; The first volume layer 302 is fixed to the side of the first main board 301 and is disposed on the upper surface of the second main board 601. A set of fixing pieces 303 are fixed to the lower surface of the first main board 301. The fixing pieces 303 are in an inverted L shape, and their sides are located inside the second side plate 604. The setting of the set of fixing pieces 303 helps the operator to accurately cover the first main board 301 above the combustion chamber. And with the curled edge setting of the first volume layer 302, a line contact method with high sealing performance and small contact area is adopted between the cover plate assembly 3 and the upper ring assembly 6, which can not only reduce the contact area between the two and reduce the material loss generated during frequent lid taking, but also the line contact is convenient for taking the first cover plate 301.

[0030] A first handle assembly 4 is installed in the middle of the first main board 301. The first handle assembly 4 includes a placement bin 401, a first handle 402, and a handle plate 403. The placement bin 401 is opened in the middle of the first main board 301. The handle plate 403 is fixedly arranged inside the placement bin 401 and is rotatably connected to the first handle 402, and the first handle 402 can be placed inside the placement bin 401. The fire hook 13 can also assist in taking the first handle 402. After the furnace body is used, the cover plate assembly 3 is covered on the top of the upper ring assembly 6 through the first handle assembly 4 to reduce the entry of dust.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combustion furnace, characterized in that: include: An external support mechanism, the external support mechanism comprising an outer shell (1) and a bottom plate (2), the outer shell (1) forming a hollow cylinder, the bottom plate (2) being located at the bottom side of the outer shell (1), and a peripheral wall of the bottom plate (2) being provided with a plurality of air inlet holes (5); An internal support mechanism, the internal support mechanism comprising an inner liner shell (7), a flow guide component (8), a heat insulation component (11) and a tray component (12), the inner liner shell (7) being placed in the hollow cylinder surrounded by the outer shell (1), an air flow cavity being formed between the inner liner shell (7) and the outer shell (1), the inner liner shell (7) being arranged around a central axis thereof, the flow guide component (8), the heat insulation component (11) and the tray component (12) being arranged in order from bottom to top along the central axis of the inner liner shell (7) , and the heat insulation component (11) and the tray component (12) are installed in the interior surrounded by the inner shell (7), the flow guide component (8) is overlapped between the outer shell (1) and the bottom plate (2), an inlet cavity is formed between the flow guide component (8) and the bottom plate (2), a flow expansion cavity is formed between the flow guide component (8) and the heat insulation component (11), an air supply cavity is formed between the heat insulation component (11) and the tray component (12), and the space above the tray component (12) forms a combustion cavity; as well as A flow-through component (10), the flow-through component (10) comprising a plurality of first flow-guiding holes (1001), a plurality of second flow-guiding holes (1002) and a plurality of third flow-guiding holes (1003) opened on the shell of the inner shell (7), the plurality of first flow-guiding holes (1001), the plurality of second flow-guiding holes (1002) and the plurality of third flow-guiding holes (1003) being arranged in order from bottom to top along the central axis of the inner shell (7), the heat-insulating component (11) being adjacent to the plurality of first flow-guiding holes (1001) and the plurality of second flow-guiding holes (1002), the first flow-guiding holes (1001) being connected to the expansion chamber and the airflow chamber, the second flow-guiding holes (1002) being connected to the air supply chamber and the airflow chamber, and the third flow-guiding holes (1003) being located at an upper position of the combustion chamber and being connected to the airflow chamber.

2. A combustion furnace according to claim 1, characterized in that: The flow guide assembly (8) comprises a third main plate (801), a third side plate (802), a plurality of annular slots (803), a plurality of second connecting plates (804), a plurality of connecting holes (805) and cooling holes (806); The central axis of the inner shell (7) overlaps with the central axis of the outer shell (1), and the outer diameter of the inner shell (7) is smaller than the inner diameter of the outer shell (1); The third side plate (802) protrudes upward and is fixed to the side of the third main plate (801), and is embedded in the inner wall of the lower end of the outer shell (1); the plurality of annular slots (803) are arranged in an array on the surface of the third main plate (801) with the center of the third main plate (801) as the center of the circle; the plurality of connecting holes (805) are staggered between each adjacent annular slot (803); the plurality of second connecting plates (804) are fixedly connected to the bottom of the inner shell (7) and are threadedly connected to the connecting holes (805) located below the inner shell; and the cooling hole (806) is opened in the middle of the third main plate (801).

3. A combustion furnace according to claim 2, characterized in that: The heat insulation assembly (11) comprises a fourth main board (1101) and a fourth side board (1102); The fourth side plate (1102) protrudes downward and is fixed to the side of the fourth main plate (1101), and is fixed to the inner wall of the inner shell (7) between the first drainage hole (1001) and the second drainage hole (1002), so as to separate the inlet cavity and the air supply cavity; The outer sides of the plurality of second drainage holes (1002) are fixedly connected with filter screens (16).

4. A combustion furnace according to claim 3, characterized in that: The tray assembly (12) comprises a fifth main board (1201), multiple groups of reinforcement structures (1202), a fifth side board (1203) and multiple groups of guide holes (1204); The fifth side plate (1203) protrudes upward and is fixed to the side of the fifth main board (1201), and each group of the guide holes (1204) is provided with a plurality of them. The multiple groups of reinforcement structures (1202) and the multiple groups of guide holes (1204) are arranged in an orderly array from the center of the fifth main board (1201) toward the side of the fifth main board (1201), and the multiple groups of reinforcement structures (1202) and the multiple groups of guide holes (1204) are arranged alternately. The reinforcement structure (1202) is concave on the upper surface of the fifth main board (1201) and is convex on the lower surface of the fifth main board (1201).

5. A combustion furnace according to claim 4, characterized in that: A group of support plates (15) are supported and connected at the lower side of the tray assembly (12); the group of support plates (15) are in an inverted L-shape; the side edges of the support plates (15) are fixedly connected to the inner wall of the inner liner shell (7) and the fixed position is higher than the position of the second drainage hole (1002).

6. A combustion furnace according to claim 5, characterized in that: A second handle assembly (14) is installed in the middle of the tray assembly (12), and the second handle assembly (14) comprises a second locking nut (1401), a locking bolt (1402) and a second handle (1403); The second handle (1403) is arranged in a ring shape, and the locking bolt (1402) is fixed at the bottom center of the second handle (1403). The locking bolt (1402) passes through the fifth main board (1201) and is threadedly connected to the second locking nut (1401).

7. A combustion furnace according to claim 6, characterized in that: A locking assembly (9) is arranged in the airflow cavity, and the locking assembly (9) comprises a plurality of first locking holes (901), a plurality of second locking holes (902), a plurality of third connecting plates (903) and a plurality of first locking nuts (904); The plurality of first locking holes (901) and the plurality of second locking holes (902) are both formed on the inner wall of the inner liner shell (7) and are arranged in correspondence with each other in the upper and lower directions; the first locking holes (901) are located above the third drainage holes (1003); the second locking holes (902) are located above the tray assembly (12); the third connecting plates (903) are arranged in one-to-one correspondence with the first locking holes (901) and the second locking holes (902); a side of the third connecting plate (903) away from the inner liner shell (7) is fixedly connected to the inner wall of the outer shell (1); a side of the third connecting plate (903) close to the inner liner shell (7) is respectively locked and connected to the first locking holes (901) and the second locking holes (902) by using the first locking nuts (904).

8. A combustion furnace according to claim 1 or 7, characterized in that: It also includes an upper ring assembly (6), wherein the upper ring assembly (6) includes a second main plate (601), a first side plate (602), a plurality of first connecting plates (603) and a second side plate (604); The second main board (601) is opened at the surface above the inner shell (7); the first side panel (602) and the second side panel (604) are respectively protruded downward and fixed to the outer side and inner side of the second main board (601); the top of the outer shell (1) is embedded in the connection between the second main board (601) and the first side panel (602); the top of the inner shell (7) is embedded in the connection between the second main board (601) and the second side panel (604); the plurality of first connecting panels (603) are evenly fixed to the bottom surface of the second main board (601); and the other side surface of the second main board (601) is threadedly fixed to the surface of the inner shell (7).

9. A combustion furnace according to claim 8, characterized in that: A cover plate assembly (3) is also provided on the top of the upper ring assembly (6), and the cover plate assembly (3) comprises a first main plate (301) and a first coil layer (302); The first coil layer (302) is fixed to the side of the first main board (301) and is mounted on the upper surface of the second main board (601); a group of fixing plates (303) are fixed to the lower surface of the first main board (301); the fixing plates (303) are in an inverted L-shape, and their side edges are located inside the second side plate (604).

10. A combustion furnace according to claim 9, characterized in that: A first handle assembly (4) is installed in the middle of the first main board (301), and the first handle assembly (4) comprises a placement compartment (401), a first handle (402) and a handle plate (403); The placement bin (401) is opened in the middle of the first main board (301), the handle plate (403) is fixedly arranged inside the placement bin (401) and is rotatably connected to the first handle (402), and the first handle (402) can be placed inside the placement bin (401).

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