Combustion furnace

Abstract

The invention provides a combustion furnace, and relates to the technical field of combustion furnaces. The combustion furnace comprises a furnace body, an ash removal device, a smoke exhaust device and a feeding device. A first combustion chamber and a second combustion chamber are arranged in the furnace body. The ash removing device is arranged at the bottom of the furnace body and used for removing ash at the bottom of the first combustion chamber. The smoke exhaust device comprises a heat dissipation assembly, a smoke exhaust pipe and a fan; the heat dissipation assembly is connected to the furnace body and used for receiving hot air flow guided out of the second combustion chamber. The smoke exhaust pipe is connected to the heat dissipation assembly and used for guiding out hot air flow received by the heat dissipation assembly in the preset direction. The draught fan is connected to the smoke exhaust pipe and used for forming airflow in the preset direction in the smoke exhaust pipe. The feeding device is connected to the furnace body and used for feeding materials into the first combustion chamber. According to the combustion furnace, the technical problems that in the prior art, a biomass combustion machine is prone to blockage and coking, the failure rate is high, and the combustion efficiency of biomass particles is low can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion furnaces, and in particular to a combustion furnace. Background Art

[0002] Biomass burner, a biomass semi-gasification automatic control burner, a biomass high-temperature pyrolysis burner that uses biomass pellets, wood chips, wood powder, sawdust and other organic biomass as fuel.

[0003] In the prior art, biomass burners are prone to coking and blocking, have a high failure rate, and are prone to ash accumulation in the radiator. There is a very obvious smoke exhaust phenomenon at the chimney mouth, and the heat exchange rate of the radiator is also reduced. In addition, the air resistance in the furnace body is increased, and the combustion efficiency of biomass particles is low. In addition, the push rod cleaning device continuously pushes the biomass combustion particles on the tray forward, destroying the combustion layer. At the same time, the unburned biomass particles will be pushed into the bottom of the furnace by the subsequent fuel, increasing the overall fuel consumption. Summary of the invention

[0004] The technical problem solved by the present invention is how to improve the technical problems in the prior art that biomass burners are prone to blockage and coking, have a high failure rate, and have low combustion efficiency of biomass particles.

[0005] The embodiments of the present invention can be implemented as follows: The present invention provides a combustion furnace, comprising: A furnace body, wherein a first combustion chamber and a second combustion chamber are provided therein, wherein the first combustion chamber and the second combustion chamber are connected, and the first combustion chamber is located below the second combustion chamber; An ash cleaning device is provided at the bottom of the furnace body and located at the bottom of the first combustion chamber, and the ash cleaning device is used to clean the ash at the bottom of the first combustion chamber; The smoke exhaust device comprises a heat dissipation component, a smoke exhaust pipe and a fan; the heat dissipation component is connected to the furnace body, and the heat dissipation component is used to receive the hot air flow derived from the second combustion chamber; the smoke exhaust pipe is connected to the heat dissipation component and is used to derive the hot air flow received by the heat dissipation component along a preset direction; the fan is connected to the smoke exhaust pipe and is used to form an air flow along the preset direction in the smoke exhaust pipe; A feeding device is connected to the furnace body and is used for feeding material into the first combustion chamber.

[0006] Optionally, the furnace body includes a first combustion section and a second combustion section arranged above the first combustion section; the first combustion chamber is arranged inside the first combustion section, and the second combustion chamber is arranged inside the second combustion section; the first combustion section is cylindrical, and the top of the second combustion section is arched and spherical.

[0007] Optionally, the combustion furnace also includes a secondary air inlet pipe and a burner; the burner is arranged at the top of the first combustion chamber; the secondary air inlet pipe is connected to the top of the first combustion section and is connected to the internal channel of the burner for introducing air into the internal channel of the burner.

[0008] Optionally, a guide structure is further provided at the bottom of the second combustion chamber, and the guide structure is connected to the burner; a guide channel with a passing area gradually decreasing from top to bottom is formed on the guide structure, and the guide channel is connected to an internal channel of the burner.

[0009] Optionally, the inner wall of the guide channel forms a spherical curved surface.

[0010] Optionally, a plurality of spaced first fins are provided on the outside of the second combustion section.

[0011] Optionally, the heat dissipation assembly includes two converging devices, a plurality of transverse pipes and a guide member; the two ends of the transverse pipe are respectively connected to the two converging devices, and the internal channels of the plurality of transverse pipes are connected to the internal space of the converging device; the guide member is arranged inside the converging device, and the guide member is at least partially bent in an arc shape, and the guide member is used to receive the airflow derived from at least one transverse pipe and guide it to at least one other transverse pipe, and the plurality of transverse pipes form at least one S-shaped channel; one of the converging devices is connected to the furnace body to receive the airflow derived from the second combustion chamber, and the other converging device is connected to the smoke exhaust pipe to derive the airflow to the smoke exhaust pipe.

[0012] Optionally, the smoke exhaust pipe includes a first smoke exhaust section and a second smoke exhaust section which are interconnected; one end of the first smoke exhaust section is connected to the heat dissipation assembly, and one end of the second smoke exhaust section is connected to the other end of the first smoke exhaust section; the first smoke exhaust section and the second smoke exhaust section are arranged in an L shape; the fan is connected to the connection between the second smoke exhaust section and the first smoke exhaust section, and the fan is used to form an airflow flowing toward the other end of the second smoke exhaust section.

[0013] Optionally, the cleaning device includes a supporting plate and a cam device; the supporting plate is used to support materials for combustion, one side of the supporting plate is rotatably connected to the furnace body, and the supporting plate is provided with a plurality of leakage holes passing through the supporting plate; the cam device is provided at the bottom of the supporting plate, and is used to repeatedly lift and detach from the supporting plate.

[0014] Optionally, there are two or more supporting plates; outer sides of two or more supporting plates are rotatably connected to the furnace body; and the cam device is correspondingly arranged at a position between two or more supporting plates to lift up the two or more supporting plates.

[0015] The beneficial effects of the combustion furnace provided by the present invention compared with the prior art include: In the combustion furnace, a first combustion chamber and a second combustion chamber are arranged in the furnace body. After the material in the first combustion chamber is burned, the part that is not fully burned enters the second combustion chamber with the airflow and burns again, so that the material can be fully burned. In addition, by arranging a fan on the smoke exhaust pipe, the fan can form an airflow in the smoke exhaust pipe in the same direction as the smoke exhaust direction, so that the airflow in the smoke exhaust pipe is quickly discharged. On the one hand, it can promote the rapid circulation of the airflow in the furnace body, facilitate the rapid replenishment of new air to the furnace body, and is conducive to the full combustion of the material; on the other hand, it can quickly complete the discharge of high-temperature airflow, which is conducive to the combustion furnace to improve the heat dissipation efficiency. Based on this, the combustion furnace can improve the combustion efficiency of the material, so that the material is fully burned, and the problems of blockage and coking can be avoided, thereby reducing the failure rate. Moreover, it is precisely because of the full combustion of the material that the situation of black smoke generation in the prior art can be improved, thereby improving the problem of dust accumulation inside the heat dissipation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is one of the structural schematic diagrams of the combustion furnace provided in the embodiments of the present application; Figure 2 This is the second structural schematic diagram of the combustion furnace provided in the embodiment of the present application.

[0018] Icons: combustion furnace 10, furnace body 100, first combustion section 110, first combustion chamber 111, second combustion section 120, second combustion chamber 121, guide structure 122, burner 130, secondary air inlet pipe 140, ash cleaning device 200, supporting plate 210, cam device 220, smoke exhaust device 300, heat dissipation component 310, confluence device 311, transverse pipe 312, smoke exhaust pipe 320, first smoke exhaust section 321, second smoke exhaust section 322, inclined pipe 323, fan 330, feeding device 400. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is one of the structural schematic diagrams of the combustion furnace provided in the embodiments of the present application; Figure 2 This is the second structural schematic diagram of the combustion furnace provided in the embodiment of the present application.

[0021] Icons: combustion furnace 10, furnace body 100, first combustion section 110, first combustion chamber 111, second combustion section 120, second combustion chamber 121, guide structure 122, burner 130, secondary air inlet pipe 140, ash cleaning device 200, supporting plate 210, cam device 220, smoke exhaust device 300, heat dissipation component 310, confluence device 311, transverse pipe 312, smoke exhaust pipe 320, first smoke exhaust section 321, second smoke exhaust section 322, inclined pipe 323, fan 330, feeding device 400.

[0022] Please refer to Figure 1 and Figure 2 In this embodiment, a combustion furnace 10 is provided, which can be applied to the combustion treatment of biomass, and the combustion furnace 10 provided in this embodiment can improve the technical problems of the prior art that the biomass burner is easy to be blocked and coked, has a high failure rate, and has low combustion efficiency of biomass particles. In other words, the combustion furnace 10 provided in this embodiment can improve the combustion efficiency of biomass, so that the biomass is fully burned, reduce pollution and reduce energy consumption.

[0023] In this embodiment, the combustion furnace 10 includes a furnace body 100, a dust cleaning device 200, a smoke exhaust device 300 and a feeding device 400. A first combustion chamber 111 and a second combustion chamber 121 are provided in the furnace body 100. The first combustion chamber 111 and the second combustion chamber 121 are connected, and the first combustion chamber 111 is located below the second combustion chamber 121. The dust cleaning device 200 is provided at the bottom of the furnace body 100 and at the bottom of the first combustion chamber 111. The dust cleaning device 200 is used to clean the dust at the bottom of the first combustion chamber 111. The smoke exhaust device 300 includes a heat dissipation component 310, a smoke exhaust pipe 320 and a fan 330; the heat dissipation component 310 is connected to the furnace body 100, and the heat dissipation component 310 is used to receive the hot air flow derived from the second combustion chamber 121; the smoke exhaust pipe 320 is connected to the heat dissipation component 310 and is used to derive the hot air flow received by the heat dissipation component 310 along a preset direction; the fan 330 is connected to the smoke exhaust pipe 320 and is used to form an air flow along a preset direction in the smoke exhaust pipe 320. The feeding device 400 is connected to the furnace body 100 and is used to feed the first combustion chamber 111.

[0024] It is worth noting that the feeding device 400 and the furnace body 100 form a whole, and the feeding of materials into the furnace body 100 can be achieved by directly replenishing materials into the feeding device 400. When the combustion furnace 10 burns biomass, the material (the material is the biomass to be burned) is introduced into the first combustion chamber 111 through the feeding device 400. When there is a sufficient amount of material in the first combustion chamber 111, the material is ignited by the ignition device on the furnace body 100 (the ignition device extends from the outside of the furnace body 100 through the peripheral wall of the furnace body 100 into the first combustion chamber 111). Preferably, during the combustion of the material, the feeding device 400 can continuously replenish the material into the first combustion chamber 111 at a certain rate.

[0025] During the combustion of the material, the part that is not fully burned flows with the airflow to the second combustion chamber 121 for re-combustion, thereby achieving full combustion of the material. The ash formed by the combustion of the material is cleaned and discharged from the bottom of the first combustion chamber 111 by the ash cleaning device 200; and the airflow generated by the combustion is guided out through the exhaust pipe 320 after passing through the heat dissipation component 310. It is worth noting that the airflow formed in the exhaust pipe 320 in the same direction as the exhaust direction by the fan 330 can promote the rapid discharge of the hot air flow generated by the combustion. In this way, the external air can be quickly sucked into the furnace body 100, ensuring that there is sufficient oxygen in the furnace body 100, which is conducive to the full combustion of the material.

[0026] As described above, in the combustion furnace 10, a first combustion chamber 111 and a second combustion chamber 121 are arranged vertically in the furnace body 100. After the material in the first combustion chamber 111 is burned, the part that is not fully burned enters the second combustion chamber 121 with the airflow and burns again, so that the material can be fully burned. In addition, by arranging a fan 330 on the smoke exhaust pipe 320, the fan 330 can form an airflow in the smoke exhaust pipe 320 in the same direction as the smoke exhaust, so that the airflow in the smoke exhaust pipe 320 is quickly discharged. On the one hand, it can promote the rapid circulation of the airflow in the furnace body 100, facilitate the rapid replenishment of new air to the furnace body 100, and is conducive to the full combustion of the material; on the other hand, it can quickly complete the discharge of the high-temperature airflow, which is conducive to the combustion furnace 10 to improve the heat dissipation efficiency. Based on this, the combustion furnace 10 can improve the combustion efficiency of the material, make the material fully burned, avoid the problems of material blockage and coking, and thus reduce the failure rate. Furthermore, due to the complete combustion of the material, the black smoke generation in the prior art can be improved, thereby improving the dust accumulation problem inside the heat dissipation component 310 .

[0027] Optionally, in this embodiment, the furnace body 100 includes a first combustion section 110 and a second combustion section 120 disposed above the first combustion section 110; the first combustion chamber 111 is disposed inside the first combustion section 110, and the second combustion chamber 121 is disposed inside the second combustion section 120; the first combustion section 110 is cylindrical, and the top of the second combustion section 120 is arched and spherical. Generally, solid biomass fuel is burned in the first combustion chamber 111, and after entering the second combustion chamber 121, most of the burning material is lighter material that floats in with the airflow. Setting the second combustion chamber 121 as a spherical top can expand the internal space volume of the second combustion chamber 121, so that the airflow stays in the second combustion chamber 121 for a sufficient time, so that the remaining material in the airflow is fully burned, and after combustion, it is discharged through the heat dissipation component 310.

[0028] Furthermore, in the present embodiment, the combustion furnace 10 further includes a secondary air inlet pipe 140 and a burner 130; the burner 130 is arranged at the top of the first combustion chamber 111; the secondary air inlet pipe 140 is connected to the top of the first combustion section 110, and is connected to the internal channel of the burner 130 for introducing air into the internal channel of the burner 130. The burner 130 can provide flame formation, which is beneficial to the combustion of the remaining materials inside the second combustion chamber 121. And through the access of the secondary air inlet pipe 140, the external space can be continuously introduced into the internal channel of the burner 130, which is beneficial to supplement sufficient oxygen and achieve full combustion of the remaining materials. It is worth noting that it is precisely because of the setting of the fan 330 that a negative pressure can be formed in the furnace body 100, so that the secondary air inlet pipe 140 can quickly replenish air.

[0029] In this embodiment, a guide structure 122 is further provided at the bottom of the second combustion chamber 121, and the guide structure 122 is connected to the burner 130; a guide channel with a gradually decreasing area from top to bottom is formed on the guide structure 122, and the guide channel is connected to the internal channel of the burner 130. The guide structure 122 can be used to receive the burner 130, which can facilitate the connection between the burner 130 and the second combustion chamber 121 on the one hand, and facilitate the flame formed on the burner 130 to complete the combustion of the material inside the second combustion chamber 121; on the other hand, the wide-mouthed channel can also be used to allow the remaining material to quickly disperse when entering the second combustion chamber 121, so as to ensure that the material is fully in contact with the air, so as to achieve the purpose of full combustion.

[0030] Furthermore, the inner wall of the flow guiding channel forms a spherical curved surface. Of course, in other embodiments, the inner wall of the flow guiding channel can also form a frustum-shaped curved surface.

[0031] In order to improve the heat dissipation efficiency of the furnace body 100, a plurality of spaced first fins are optionally provided outside the second combustion section 120. Since a combustion reaction is formed in the second combustion chamber 121, and a large amount of heat from the first combustion chamber 111 also rises to the second combustion chamber 121, the temperature of the second combustion chamber 121 is relatively high. By providing the first fins outside the second combustion section 120, the heat dissipation area of ​​the second combustion section 120 can be expanded through the first fins, so as to achieve the purpose of improving the heat dissipation efficiency.

[0032] Of course, in other embodiments, the first fin may be omitted.

[0033] In this embodiment, the heat dissipation assembly 310 includes two converging devices 311, multiple transverse pipes 312 and a guide member; the two ends of the transverse pipe 312 are respectively connected to the two converging devices 311, and the internal channels of the multiple transverse pipes 312 are connected to the internal space of the converging device 311; the guide member is arranged inside the converging device 311, and the guide member is at least partially bent in an arc shape. The guide member is used to receive the airflow derived from at least one transverse pipe 312 and guide it to at least one other transverse pipe 312, and the multiple transverse pipes 312 form at least one S-shaped channel; one of the converging devices 311 is connected to the furnace body 100 to receive the airflow derived from the second combustion chamber 121, and the other converging device 311 is connected to the smoke exhaust pipe 320 to derive the airflow to the smoke exhaust pipe 320.

[0034] In Figure 2In the case of an example, it can be seen that the multiple transverse pipes 312 are divided into three pipe groups, and the three pipe groups are arranged in the up-down direction; in this embodiment, each pipe group has multiple transverse pipes 312 (of course, in other embodiments, each pipe group can also be provided with only one or two transverse pipes 312). In addition, each confluence device 311 is provided with a guide member. In the confluence device 311 located on the left, the guide member is arranged at the bottom of the internal space of the confluence device 311, and corresponds to the lower pipe group and the middle pipe group, so that the airflow introduced by the lower pipe group is guided to the middle pipe group by the guide member; and in the confluence device 311 located on the right, the guide member is arranged at the top of the internal space of the confluence device 311, and corresponds to the middle pipe group and the upper pipe group, so that the airflow derived from the middle pipe group is guided to the upper pipe group by the guide member. In addition, the top part of the inner space of the left confluence device 311 corresponds to the exhaust pipe 320 and the upper pipe group, so as to receive the airflow derived from the upper pipe group and introduce it into the exhaust pipe 320 to derive the airflow; and the bottom part of the inner space of the right confluence device 311 corresponds to the lower pipe group and the pipe connected to the furnace body 100, so as to receive the airflow derived from the furnace body 100 and guide it to the lower pipe group. Thus, the airflow formed by combustion in the furnace body 100 flows through the right confluence device 311, the lower pipe group, the left confluence device 311, the middle pipe group, the right confluence device 311, the upper pipe group, the left confluence device 311 and the exhaust pipe 320 in sequence, and then is derived.

[0035] Based on this, the S-shaped channel formed by the multiple transverse pipes 312 can make the high-temperature airflow generated by combustion complete heat exchange in a longer heat dissipation channel, which can reduce the temperature of the exhaust smoke and facilitate rapid heat dissipation. In addition, by setting the arc-shaped guide, the airflow can flow more smoothly, reduce air resistance, facilitate smooth smoke exhaust, and then facilitate smooth replenishment of new air into the furnace body 100, thereby improving the combustion efficiency of the material.

[0036] In addition, in order to improve the heat dissipation efficiency of the heat dissipation assembly 310 , in the present embodiment, a plurality of spaced second fins are disposed on the outer periphery of the transverse pipe 312 to quickly complete the heat dissipation of the transverse pipe 312 .

[0037] In this embodiment, the smoke exhaust pipe 320 includes a first smoke exhaust section 321 and a second smoke exhaust section 322 that are interconnected; one end of the first smoke exhaust section 321 is connected to the heat dissipation component 310, and one end of the second smoke exhaust section 322 is connected to the other end of the first smoke exhaust section 321; the first smoke exhaust section 321 and the second smoke exhaust section 322 are arranged in an L shape; the fan 330 is connected to the connection between the second smoke exhaust section and the first smoke exhaust section 321, and the fan 330 is used to form an airflow flowing toward the other end of the second smoke exhaust section 322. Figure 1The first smoke exhaust section 321 is arranged horizontally and connected to the confluence device 311 on the left side; the second smoke exhaust section 322 is arranged vertically, and the fan 330 is arranged at the bottom of the second smoke exhaust section 322. The second smoke exhaust section 322 exhausts smoke upward, and the fan 330 forms an upward airflow, which can promote the discharge of the airflow, and it is convenient to form a negative pressure in the furnace body 100, so as to facilitate the replenishment of new external air into the furnace body 100.

[0038] In addition, in the present embodiment, the second smoke exhaust section 322 is further provided with an oblique tube 323, the internal channel of the oblique tube 323 is connected with the internal channel of the second smoke exhaust section 322, and the oblique tube 323 is arranged to be inclined downward. When the fan 330 forms an airflow, the airflow flowing inside the first smoke exhaust section 321 forms a negative pressure, so that the oblique tube 323 inhales the external air to balance the internal air pressure of the first smoke exhaust section 321 and the external air pressure, which is conducive to the smooth discharge of smoke and the purpose of improving the smoke exhaust efficiency. It is also in this way that the efficiency of the secondary air inlet pipe 140 to enter the furnace body 100 can be further improved, thereby ensuring sufficient oxygen in the furnace body 100 for material combustion, which is conducive to improving the combustion efficiency of the material. Of course, in other embodiments, the setting of the oblique tube 323 can also be cancelled.

[0039] The ash cleaning device 200 includes a carrier plate 210 and a cam device 220; the carrier plate 210 is used to carry the material for combustion, one side of the carrier plate 210 is rotatably connected to the furnace body 100, and the carrier plate 210 is provided with a plurality of leak holes penetrating the carrier plate 210; the cam device 220 is provided at the bottom of the carrier plate 210, and is used to repeatedly lift up and detach from the carrier plate 210. When the feeding device 400 introduces the material into the furnace body 100, the material is carried by the carrier plate 210, and the material is burned on the carrier plate 210 when it is ignited; in addition, the ash generated by the combustion of the material is also carried by the carrier plate 210.

[0040] When the cam device 220 is in operation, the cam device 220 repeatedly lifts and detaches the carrier plate 210, so that the carrier plate 210 repeatedly shakes up and down, and the ash generated by the combustion can be shaken out of the leakage hole by shaking, thereby achieving ash cleaning. Since the ash leaks directly from the bottom of the carrier plate 210 during the cleaning process, it can avoid affecting the combustion layer on the top of the material pile, and can ensure the normal operation of the combustion function, thereby ensuring the full combustion of the material.

[0041] It is worth noting that in order to avoid the burning layer of the material being affected by excessive shaking, in this embodiment, the height of the cam device 220 lifting the supporting plate 210 should not be too high. For example, the lifting height can be selected within a range of less than or equal to 8 cm according to actual conditions.

[0042] Further, the number of the carrier plates 210 is two or more; the outer sides of the two or more carrier plates 210 are rotatably connected to the furnace body 100; and the cam device 220 is correspondingly arranged at the position between the two or more carrier plates 210 to lift the two or more carrier plates 210. In this embodiment, the number of the carrier plates 210 is two as an example for description. The sides of the two carrier plates 210 that are away from each other are rotatably connected to the furnace body 100, and the cam of the cam device 220 corresponds to the position between the two carrier plates 210. During the operation of the cam device 220, the cam repeatedly lifts and disengages from the middle position of the two carrier plates 210 to achieve the shaking of the two carrier plates 210. Of course, when the cam device 220 lifts the carrier plates 210 to the highest point, the width of the gap between the two carrier plates 210 is less than or equal to the width of the leak hole, thereby preventing the material from leaking out of the gap between the two carrier plates 210.

[0043] Of course, in other embodiments, the number of the supporting plates 210 may be three, four or more. The multiple supporting plates 210 may be arranged along a circumferential path, and the cams of the cam device 220 correspond to the center positions of the multiple supporting plates 210, so that the cams can lift the multiple supporting plates 210 at the same time.

[0044] In summary, in the combustion furnace 10, a first combustion chamber 111 and a second combustion chamber 121 are arranged in the furnace body 100. After the material in the first combustion chamber 111 is burned, the part that is not fully burned enters the second combustion chamber 121 with the airflow and burns again, so that the material can be fully burned. In addition, by arranging a fan 330 on the smoke exhaust pipe 320, the fan 330 can form an airflow in the smoke exhaust pipe 320 in the same direction as the smoke exhaust direction, so that the airflow in the smoke exhaust pipe 320 is quickly discharged. On the one hand, it can promote the rapid circulation of the airflow in the furnace body 100, and facilitate the rapid replenishment of new air to the furnace body 100, which is conducive to the full combustion of the material; on the other hand, it can quickly complete the discharge of the high-temperature airflow, which is conducive to the combustion furnace 10 to improve the heat dissipation efficiency. Based on this, the combustion furnace 10 can improve the combustion efficiency of the material, make the material fully burned, avoid the problems of material blockage and coking, and thus reduce the failure rate. Moreover, it is precisely because of the full combustion of the material that the black smoke generated in the prior art can be improved, thereby improving the problem of dust accumulation inside the heat dissipation component 310. In addition, through the arrangement of the cam device 220 and the rotatable carrier plate 210, the dust on the carrier plate 210 can be cleaned by shaking, which can avoid affecting the combustion layer of the material, which is conducive to ensuring the normal combustion action, ensuring that the material is fully burned, and improving the combustion efficiency.

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A combustion furnace (10), characterized in that: include: A furnace body (100) is provided with a first combustion chamber (111) and a second combustion chamber (121) therein, wherein the first combustion chamber (111) and the second combustion chamber (121) are connected, and the first combustion chamber (111) is located below the second combustion chamber (121); an ash cleaning device (200) disposed at the bottom of the furnace body (100) and located at the bottom of the first combustion chamber (111), the ash cleaning device (200) being used to clean ash at the bottom of the first combustion chamber (111); A smoke exhaust device (300), comprising a heat dissipation component (310), a smoke exhaust pipe (320) and a fan (330); the heat dissipation component (310) is connected to the furnace body (100), and the heat dissipation component (310) is used to receive a hot air flow derived from the second combustion chamber (121); the smoke exhaust pipe (320) is connected to the heat dissipation component (310) and is used to derive the hot air flow received by the heat dissipation component (310) along a preset direction; the fan (330) is connected to the smoke exhaust pipe (320) and is used to form an air flow along the preset direction in the smoke exhaust pipe (320); A feeding device (400) is connected to the furnace body (100) and is used to feed material into the first combustion chamber (111).

2. The combustion furnace (10) according to claim 1, characterized in that: The furnace body (100) comprises a first combustion section (110) and a second combustion section (120) arranged above the first combustion section (110); the first combustion chamber (111) is arranged inside the first combustion section (110), and the second combustion chamber (121) is arranged inside the second combustion section (120); the first combustion section (110) is columnar, and the top of the second combustion section (120) is arched and spherical.

3. The combustion furnace (10) according to claim 2, characterized in that: The combustion furnace (10) further comprises a secondary air inlet pipe (140) and a burner (130); the burner (130) is arranged at the top of the first combustion chamber (111); the secondary air inlet pipe (140) is connected to the top of the first combustion section (110) and is connected to the internal passage of the burner (130) so as to introduce air into the internal passage of the burner (130).

4. The combustion furnace (10) according to claim 3, characterized in that A flow guiding structure (122) is also provided at the bottom of the second combustion chamber (121), and the flow guiding structure (122) is connected to the burner (130); a flow guiding channel whose passing area gradually decreases from top to bottom is formed on the flow guiding structure (122), and the flow guiding channel is connected to the internal channel of the burner (130).

5. The combustion furnace (10) according to claim 4, characterized in that The inner wall of the flow guiding channel forms a spherical curved surface.

6. The combustion furnace (10) according to claim 2, characterized in that The exterior of the second combustion section (120) is provided with a plurality of spaced first fins.

7. The combustion furnace (10) according to claim 1, characterized in that The heat dissipation assembly (310) comprises two flow converging devices (311), a plurality of transverse pipes (312) and a flow guide; the two ends of the transverse pipe (312) are respectively connected to the two flow converging devices (311), and the internal channels of the plurality of transverse pipes (312) are all connected to the internal space of the flow converging device (311); the flow guide is arranged inside the flow converging device (311), and at least part of the flow guide is bent into an arc shape, and the flow guide is used to receive the airflow derived from at least one of the transverse pipes (312) and guide it to at least one other transverse pipe (312), and the plurality of transverse pipes (312) form at least one S-shaped channel; one of the flow converging devices (311) is connected to the furnace body (100) to receive the airflow derived from the second combustion chamber (121), and the other flow converging device (311) is connected to the smoke exhaust pipe (320) to derive the airflow to the smoke exhaust pipe (320).

8. The combustion furnace (10) according to claim 1, characterized in that The smoke exhaust pipe (320) comprises a first smoke exhaust section (321) and a second smoke exhaust section (322) which are interconnected; one end of the first smoke exhaust section (321) is connected to the heat dissipation component (310), and one end of the second smoke exhaust section (322) is connected to the other end of the first smoke exhaust section (321); the first smoke exhaust section (321) and the second smoke exhaust section (322) are arranged in an L shape; the fan (330) is connected to the connection between the second smoke exhaust section (322) and the first smoke exhaust section (321), and the fan (330) is used to form an airflow flowing toward the other end of the second smoke exhaust section (322).

9. The combustion furnace (10) according to claim 1, characterized in that The ash cleaning device (200) comprises a supporting plate (210) and a cam device (220); the supporting plate (210) is used to support materials for combustion, one side of the supporting plate (210) is rotatably connected to the furnace body (100), and the supporting plate (210) is provided with a plurality of leakage holes penetrating the supporting plate (210); the cam device (220) is provided at the bottom of the supporting plate (210) and is used to repeatedly lift up and detach from the supporting plate (210).

10. The combustion furnace (10) according to claim 9, characterized in that The number of the supporting plates (210) is two or more; the outer sides of the two or more supporting plates (210) are rotatably connected to the furnace body (100); and the cam device (220) is correspondingly arranged at a position between the two or more supporting plates (210) to lift up the two or more supporting plates (210).

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