Combustion furnace capable of recycling heat

Abstract

The utility model discloses a heat recycling combustion furnace which comprises a combustion furnace body, a supporting plate is fixed in the combustion furnace body, a combustor is installed in the middle of the combustion furnace body, a combustion cavity is formed in the top end of the supporting plate, a gas inlet pipe is connected to one side wall of the combustion furnace body, and a gas outlet pipe is connected to the other side wall of the combustion furnace body. A smoke exhaust pipe is fixed to the top end of the combustion cavity and penetrates through the combustion furnace body, and a water tank is arranged on the side, away from the combustion furnace body, of the combustion cavity. The steam heating device has the advantages that the steam heating box is arranged on one side of the water tank, filtered smoke is discharged into the steam heating box through the air outlet pipe, the smoke with residual heat reserved can heat the water containing barrel, the smoke can be discharged out of the steam heating box at a constant speed through the air dispersing plate arranged at the top end of the steam heating box, and the situation that the smoke cannot be dispersed out is avoided; meanwhile, the retention time of the flue gas in the steaming box can be prolonged, the full utilization of the flue gas is improved, and heat loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion furnaces, in particular to a combustion furnace capable of recycling heat. Background Art

[0002] The combustion furnace is the simplest combustion equipment of industrial boilers. It is an energy conversion equipment. The energy input to the boiler includes chemical energy and electrical energy in the fuel, and outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy.

[0003] The Chinese patent with the patent number CN218155504U discloses an activated carbon combustion furnace with heat recovery, which includes a combustion furnace body and a water tank. The combustion furnace body is located on the left side of the water tank, and the right side of the top of the water tank is bolted with a machine box.

[0004] During use, the above patent filters the flue gas and removes particles and smoke through the cooperation of the mounting plate, the connecting plate, the filter, the clamping plate and the handle to achieve an environmental protection effect, and the filter can be easily disassembled. The flue gas enters the connecting pipe through the exhaust pipe to heat the water in the water tank. However, due to the high temperature of the flue gas and the fixed flow rate, the flue gas heated in the water tank will be directly discharged into the air after filtering, so that the filtered flue gas is not fully utilized, resulting in heat loss. Therefore, a new type of heat recycling combustion furnace is urgently needed to solve these problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The technical problem to be solved by the utility model is to provide a combustion furnace which can fully utilize the heat recycling of flue gas waste heat in view of the current status of the prior art.

[0007] (II) Technical solution

[0008] The utility model is achieved through the following technical scheme: the utility model proposes a combustion furnace for heat circulation utilization, including a combustion furnace body, a support plate is fixed in the combustion furnace body, a burner is centrally installed in the combustion furnace body, a combustion chamber is arranged on the top of the support plate, an air inlet pipe is connected to one side wall of the combustion furnace body, a smoke exhaust pipe is fixed through the top of the combustion chamber through the combustion furnace body, a water tank is arranged on the side away from the combustion furnace body, a connecting pipe is installed in the water tank at the interface with the smoke exhaust pipe, a filter box is fixed on one side wall of the water tank, a fixing block is arranged on the filter box, a mounting plate is connected to the fixing block, a filter plate is fixed on the bottom end of the mounting plate through the filter box, a limiting bolt is arranged on the mounting plate, a fan is connected on one side wall of the filter box, a steam heating box is fixed on the side away from the filter box, the other side wall of the fan passes through the steam heating box and is connected to the air outlet pipe, a support column is installed in the steam heating box, a water bucket is arranged on the top of the support column, and an air dispersion plate is fixed on the top of the steam heating box.

[0009] Furthermore, the combustion furnace body is welded to the support plate, the support plate is made of stainless steel, the combustion furnace body is connected to the burner by bolts, and the support plate is welded to the combustion chamber.

[0010] By adopting the above technical solution, the combustion furnace body can fix the support plate more firmly, and the support plate can better and more stably fix the combustion chamber, while avoiding contact between water and fuel gas, and the burner can better ignite the fuel.

[0011] Furthermore, the air inlet pipe passes through the support plate and is plugged into the combustion furnace body, the smoke exhaust pipe passes through the combustion furnace body and is threadedly connected to the combustion chamber, and the smoke exhaust pipe is made of PVC material.

[0012] By adopting the above technical solution, the air intake pipe can better fill the fuel gas into the combustion chamber, and the smoke exhaust pipe can better discharge the gas generated by combustion out of the combustion chamber.

[0013] Furthermore, the water tank is connected to the connecting pipe by bolts, the smoke exhaust pipe is connected to the connecting pipe by threads, the water tank is connected to the filter box by bolts, and the filter box is welded to the fixing block.

[0014] By adopting the above technical solution, the connecting pipe can be more firmly installed in the water tank, the smoke exhaust pipe can be more firmly connected to the connecting pipe, the connecting pipe can better heat the water in the water tank, and the water tank can more firmly fix the filter box.

[0015] Furthermore, the mounting plate is bonded to the filter plate, the limiting bolt passes through the mounting plate and is threadedly connected to the fixing block, and the limiting bolt is made of stainless steel.

[0016] By adopting the above technical solution, the mounting plate can better insert the filter plate into the filter box and seal the filter box socket. The limiting bolt can more firmly install the mounting plate on the filter box, and the filter plate can better filter smoke impurities.

[0017] Furthermore, the fan is plugged into the filter box, the fan is bolted to the steam heating box, the fan passes through the steam heating box and is threadedly connected to the air outlet pipe, and the air outlet pipe is made of PVC material.

[0018] By adopting the above technical solution, the fan can draw the filtered smoke in the filter box into the exhaust pipe, the steam heating box can fix the fan more stably, and the exhaust pipe can fill the filtered smoke into the steam heating box.

[0019] Furthermore, the steam heating box is connected to the support column by bolts, the support column is welded to the water tub, the support column is a cylindrical structure, and the steam heating box is connected to the air dispersion plate by bolts.

[0020] By adopting the above technical solution, the support column can make the water tub more firmly fixed in the steam box, the diffuser plate can be more firmly fixed on the steam box, the diffuser plate can disperse the smoke in the steam box, and at the same time extend the time that the smoke remains in the steam box, so as to facilitate the heating of the water in the water tub.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] In order to solve the problem that during the use of the existing heat recycling combustion furnace, the flue gas enters the connecting pipe through the exhaust pipe to heat the water in the water tank, but due to the high temperature of the flue gas and the fixed flow speed, the flue gas heated in the water tank will be directly discharged into the air after filtering, so that the filtered flue gas is not fully utilized, resulting in heat loss. The utility model arranges a steaming box on one side of the water tank, and the filtered flue gas is discharged into the steaming box through the outlet pipe. The flue gas with residual heat will heat the water bucket, and the air dispersion plate arranged on the top of the steaming box can make the flue gas discharged from the steaming box at a uniform speed to avoid the smoke from being unable to disperse. At the same time, the residence time of the smoke in the steaming box can be increased, thereby improving the full utilization of the smoke and avoiding heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the combustion furnace for heat recycling of the utility model;

[0025] Figure 2 The utility model is a combustion furnace for heat recycling. Figure 1 Enlarged view of point A in the middle.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Combustion furnace body; 2. Support plate; 3. Burner; 4. Combustion chamber; 5. Air inlet pipe; 6. Smoke exhaust pipe; 7. Water tank; 8. Connecting pipe; 9. Filter box; 10. Fixing block; 11. Mounting plate; 12. Filter plate; 13. Limit bolts; 14. Fan; 15. Steam box; 16. Exhaust pipe; 17. Support column; 18. Water bucket; 19. Air dispersion plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] like Figure 1-Figure 2As shown, the heat recycling combustion furnace in this embodiment includes a combustion furnace body 1, a support plate 2 is fixed in the combustion furnace body 1, a burner 3 is centrally installed in the combustion furnace body 1, a combustion chamber 4 is arranged on the top of the support plate 2, the combustion furnace body 1 can fix the support plate 2 more firmly, the support plate 2 can better fix the combustion chamber 4 more firmly, and at the same time avoid water from contacting the fuel gas, the burner 3 can better ignite the fuel, an air intake pipe 5 is connected to one side wall of the combustion furnace body 1, a smoke exhaust pipe 6 is fixed on the top of the combustion chamber 4 penetrating the combustion furnace body 1, the air intake pipe 5 can better fill the fuel gas into the combustion chamber 4, the smoke exhaust pipe 6 can better discharge the gas generated by combustion from the combustion chamber 4, a water tank 7 is arranged on the side away from the combustion furnace body 1, a connecting pipe 8 is installed at the interface between the water tank 7 and the smoke exhaust pipe 6, a filter box 9 is fixed on one side wall of the water tank 7, a fixing block 10 is arranged on the filter box 9, and the fixing block 1 0 is connected with a mounting plate 11, and a filter plate 12 is fixed on the bottom end of the mounting plate 11 through the filter box 9. A limiting bolt 13 is arranged on the mounting plate 11, and the mounting plate 11 can better insert the filter plate 12 into the filter box 9, and at the same time seal the socket of the filter box 9. The limiting bolt 13 can more firmly install the mounting plate 11 on the filter box 9, and the filter plate 12 can better filter the impurities in the flue gas. A fan 14 is connected to one side wall of the filter box 9, and a steam heating box 15 is fixed on the side away from the filter box 9. The other side wall of the fan 14 passes through the steam heating box 15 and is connected with an outlet pipe 16. The fan 14 can draw the filtered flue gas in the filter box 9 into the outlet pipe 16, and the steam heating box 15 can fix the fan 14 more stably. The outlet pipe 16 can fill the filtered flue gas into the steam heating box 15. A support column 17 is installed in the steam heating box 15, and a water bucket 18 is arranged on the top of the support column 17. A diffuser plate 19 is fixed on the top of the steam heating box 15.

[0030] like Figure 1-Figure 2As shown, in this embodiment, the combustion furnace body 1 is welded to the support plate 2, the support plate 2 is made of stainless steel, the combustion furnace body 1 is bolted to the burner 3, the support plate 2 is welded to the combustion chamber 4, the air inlet pipe 5 passes through the support plate 2 and is plugged into the combustion furnace body 1, the smoke exhaust pipe 6 passes through the combustion furnace body 1 and is threadedly connected to the combustion chamber 4, the smoke exhaust pipe 6 is made of PVC material, the water tank 7 is bolted to the connecting pipe 8, the smoke exhaust pipe 6 is threadedly connected to the connecting pipe 8, the water tank 7 is bolted to the filter box 9, the filter box 9 is welded to the fixing block 10, the connecting pipe 8 can be more firmly installed in the water tank 7, the smoke exhaust pipe 6 can be more firmly connected to the connecting pipe 8, the connecting pipe 8 can better heat the water in the water tank 7, the water tank 7 can more firmly fix the filter box 9, the mounting plate 11 is bonded to the filter plate 12, The limiting bolt 13 penetrates the mounting plate 11 and is threadedly connected to the fixing block 10. The limiting bolt 13 is made of stainless steel. The fan 14 is plugged into the filter box 9. The fan 14 is bolted to the steam heating box 15. The fan 14 penetrates the steam heating box 15 and is threadedly connected to the air outlet pipe 16. The air outlet pipe 16 is made of PVC. The steam heating box 15 is bolted to the support column 17. The support column 17 is welded to the water bucket 18. The support column 17 is a cylindrical structure. The steam heating box 15 is bolted to the air dispersion plate 19. The support column 17 can make the water bucket 18 more firmly fixed in the steam heating box 15. The air dispersion plate 19 can be more firmly fixed on the steam heating box 15. The air dispersion plate 19 can disperse the smoke in the steam heating box 15 and at the same time extend the time that the smoke remains in the steam heating box 15, so as to heat the water in the water bucket 18.

[0031] The specific implementation process of this embodiment is as follows: when in use, first inject the fuel gas into the combustion chamber 4 through the air inlet pipe 5, and the fuel gas is burned by igniting the burner 3. Water is injected into the combustion furnace body 1 to heat it through the heat energy generated by the combustion of the fuel gas. The filtered flue gas is discharged into the steaming box 15 through the outlet pipe 16 through the steaming box 15 set on one side of the water tank 7. The flue gas with residual heat will heat the water bucket 18. The diffuser plate 19 set at the top of the steaming box 15 can make the flue gas discharge from the steaming box 15 at a uniform speed to avoid the flue gas from being unable to disperse. At the same time, it can increase the residence time of the flue gas in the steaming box 15, improve the full utilization of the flue gas, and avoid heat loss. The fixing block 10 set on the filter box 9 can fix the mounting plate 11 with the filter plate 12 on the fixing block 10 through the limit bolts 13, thereby improving the convenience of disassembly and installation of the filter plate 12.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combustion furnace with heat recycling, characterized in that: The invention comprises a combustion furnace body (1), a support plate (2) is fixed inside the combustion furnace body (1), a burner (3) is centrally installed inside the combustion furnace body (1), a combustion chamber (4) is arranged at the top of the support plate (2), an air intake pipe (5) is connected to one side wall of the combustion furnace body (1), a smoke exhaust pipe (6) is fixed at the top of the combustion chamber (4) and passes through the combustion furnace body (1), a water tank (7) is arranged on the side away from the combustion furnace body (1), a connecting pipe (8) is installed at the interface between the water tank (7) and the smoke exhaust pipe (6), a filter box (9) is fixed on one side wall of the water tank (7), and a fixing block (10) is arranged on the filter box (9). 0), a mounting plate (11) is connected to the fixing block (10), the bottom end of the mounting plate (11) passes through the filter box (9) and is fixed with a filter plate (12), a limiting bolt (13) is arranged on the mounting plate (11), a fan (14) is connected to one side wall of the filter box (9), a steam heating box (15) is fixed on the side away from the filter box (9), the other side wall of the fan (14) passes through the steam heating box (15) and is connected with an air outlet pipe (16), a support column (17) is installed in the steam heating box (15), a water bucket (18) is arranged at the top end of the support column (17), and a gas dispersion plate (19) is fixed at the top end of the steam heating box (15).

2. The heat recycling combustion furnace according to claim 1, characterized in that: The combustion furnace body (1) is welded to the support plate (2), the support plate (2) is made of stainless steel, the combustion furnace body (1) is bolted to the burner (3), and the support plate (2) is welded to the combustion chamber (4).

3. The heat recycling combustion furnace according to claim 1, characterized in that: The air inlet pipe (5) passes through the support plate (2) and is plugged into the combustion furnace body (1); the smoke exhaust pipe (6) passes through the combustion furnace body (1) and is threadedly connected to the combustion chamber (4); and the smoke exhaust pipe (6) is made of PVC material.

4. The heat recycling combustion furnace according to claim 1, characterized in that: The water tank (7) is bolted to the connecting pipe (8), the smoke exhaust pipe (6) is threadedly connected to the connecting pipe (8), the water tank (7) is bolted to the filter box (9), and the filter box (9) is welded to the fixing block (10).

5. The heat recycling combustion furnace according to claim 1, characterized in that: The mounting plate (11) is bonded to the filter plate (12), the limiting bolt (13) passes through the mounting plate (11) and is threadedly connected to the fixing block (10), and the limiting bolt (13) is made of stainless steel.

6. The heat recycling combustion furnace according to claim 1, characterized in that: The fan (14) is plugged into the filter box (9), the fan (14) is bolted to the steam heating box (15), the fan (14) passes through the steam heating box (15) and is threadedly connected to the air outlet pipe (16), and the air outlet pipe (16) is made of PVC material.

7. The heat recycling combustion furnace according to claim 1, characterized in that: The steam heating box (15) is connected to the support column (17) by bolts, the support column (17) is welded to the water storage tub (18), the support column (17) is a cylindrical structure, and the steam heating box (15) is connected to the air dispersion plate (19) by bolts.

Images