Combustion furnace waste heat recycling device

Abstract

The invention discloses a combustion furnace waste heat recycling device which comprises a base, a combustion furnace shell is fixedly installed at the top end of the base, a combustion furnace generator is arranged at the top end of the combustion furnace shell, an oxygen supply mechanism is arranged at the bottom end of the combustion furnace shell, and a quantifying mechanism with an air cylinder is arranged at the output end of the oxygen supply mechanism. A heat preservation mechanism with a protection pipe is arranged on the outer surface of the combustion furnace shell, the heat preservation mechanism communicates with a quantification mechanism, a preheating mechanism is arranged at the output end of the heat preservation mechanism, and the quantification mechanism comprises an air cylinder. In this way, the oxygen supply amount of the high-pressure fan can be controlled, cooling is achieved, the temperature in the combustion furnace can be kept constant through control over the air cylinder, the forging effect is improved, meanwhile, vacuum heat insulation is conducted on the outer surface of the conveying pipe through the high-pressure fan, heat flow loss is further reduced, and the waste heat utilization rate is increased.

Description

Technical Field

[0001] The invention relates to combustion furnace equipment, in particular to a combustion furnace waste heat recovery and utilization device. Background Art

[0002] The combustion furnace is also known as the carbon-sulfur combustion furnace, or arc furnace for short. It uses high voltage and high frequency oscillation circuits to form an instantaneous large current to ignite the sample, so that the sample burns rapidly under oxygen-rich conditions to produce a mixed gas. After a chemical analysis procedure, the carbon and sulfur content in the sample can be quantitatively and quickly analyzed. However, there are some problems that need to be improved when using the combustion furnace.

[0003] At present, when the combustion furnace is in use, the production supply and demand of the combustion furnace is very important. However, while the combustion furnace generates heat supply and demand during use, a large amount of heat will also be wasted with the discharge of exhaust gas. Therefore, it is necessary to export the heat flow through the conveying pipe and use it rationally. However, in the process of conveying waste heat, it is difficult to better insulate the pipeline. Therefore, a certain amount of heat flow waste will be generated in the transportation process, and when the heat flow is exported, the temperature inside the combustion furnace will also be reduced, thereby affecting the subsequent forging accuracy. Summary of the invention

[0004] The purpose of the present invention is to provide a combustion furnace waste heat recovery and utilization device to solve the problem raised in the above background technology that during the waste heat transportation process, it is difficult to better insulate the pipeline, so a certain amount of heat flow will be wasted during the transportation process.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a waste heat recovery and utilization device for a combustion furnace, comprising a base, a combustion furnace shell is fixedly installed on the top of the base, a combustion furnace generator is arranged on the top of the combustion furnace shell, an oxygen supply mechanism is arranged on the bottom of the combustion furnace shell, a quantitative mechanism with an air cylinder is arranged on the output end of the oxygen supply mechanism, a heat preservation mechanism with a protective tube is arranged on the outer surface of the combustion furnace shell, the heat preservation mechanism is connected with the quantitative mechanism, and a preheating mechanism is arranged on the output end of the heat preservation mechanism;

[0006] The quantitative mechanism includes an air cylinder, which is connected to the combustion furnace shell. A high-pressure fan is fixedly installed on the top of the base, and the high-pressure fan is connected to the combustion furnace shell. An air outlet pipe is fixedly installed on the output end of the high-pressure fan. A ball shaft is arranged inside the air outlet pipe, and the air cylinder is arranged on the top of the ball shaft.

[0007] According to the above technical solution: when the combustion furnace body is in use, the high-pressure fan can supply oxygen to the inside of the closed combustion furnace shell, thereby increasing the combustion time inside the combustion furnace shell.

[0008] As a preferred technical solution of the present invention, the gas cylinder is fixedly installed on the outer surface of the combustion furnace shell, a connecting pipe is fixedly installed on one end of the gas cylinder, the connecting pipe is connected to the combustion furnace shell, a piston is slidably installed inside the gas cylinder, a support rod is fixedly installed on one end of the piston, a rack is fixedly installed on the free end of the support rod, a fixing rod is fixedly installed on the top end of the ball shaft, a gear is fixedly installed on the top end of the fixing rod, and the rack is meshed with the gear.

[0009] According to the above technical solution: the oxygen supply of the high-pressure fan can be controlled by adjusting the size of the connecting gap between the ball shaft and the air outlet pipe, thereby reducing the combustion effect inside the combustion furnace shell and achieving cooling.

[0010] As a preferred technical solution of the present invention, a spring is fixedly installed between the piston and the inner wall of the air cylinder, a circular hole is opened at one end of the air cylinder, a fixing frame is fixedly installed at the top of the air outlet pipe, and the fixing rod is rotatably installed inside the fixing frame.

[0011] According to the above technical solution: through the elastic force of the spring, the oxygen supply is controlled to increase, so as to keep the combustion temperature inside the combustion furnace body constant and improve the forging effect.

[0012] As a preferred technical solution of the present invention, a combustion furnace body is fixedly installed inside the combustion furnace shell, a driving motor is fixedly installed on the top of the base, the output end of the driving motor is installed with the combustion furnace body, and the air outlet pipe is connected with the combustion furnace body.

[0013] As a preferred technical solution of the present invention, a delivery pipe is fixedly installed on the top of the base, the free end of the delivery pipe is connected to the outer shell of the combustion furnace, an annular water pipe is fixedly installed inside the delivery pipe, and a water inlet pipe and a water outlet pipe are respectively provided at both ends of the annular water pipe, and valves are provided on the outer surfaces of the water inlet pipe and the water outlet pipe.

[0014] According to the above technical solution: the water source inside the annular water pipe is heated by the waste heat, so that the waste heat is absorbed and reused.

[0015] As a preferred technical solution of the present invention, the preheating mechanism includes a heat conduction pipe, which is fixedly installed between the delivery pipe and the air outlet pipe. The two ends of the heat conduction pipe are respectively connected to the delivery pipe and the air outlet pipe. A guide plate is fixedly installed inside the air outlet pipe near the heat conduction pipe. A drying mechanism is provided on the outer surface of the heat conduction pipe, and the heat conduction pipe is connected to the drying mechanism.

[0016] According to the above technical solution: by mixing the waste heat with the cold air inside the air inlet pipe, the air is preheated to improve the combustion efficiency of the combustion furnace.

[0017] As a preferred technical solution of the present invention, a carbon box is fixedly installed on the inner wall of the delivery pipe close to the heat conduction pipe, and the carbon box is connected to the heat conduction pipe. A cylinder is fixedly installed on the inner bottom wall of the delivery pipe, and the cylinder is connected to the delivery pipe. The interiors of the carbon box and the cylinder are both provided with activated crushed carbon.

[0018] According to the above technical solution: the flue gas can be filtered through the carbon box and the cylinder and the activated carbon fragments therein, and then the filtered flue gas is discharged through the through hole to avoid pollution to the environment.

[0019] As a preferred technical solution of the present invention, the insulation mechanism includes a protective tube, which is fixedly installed on the outer surface of the conveying pipe, a cavity is provided between the conveying pipe and the protective tube, an exhaust pipe is provided between the input end of the high-pressure fan and the cavity, and a one-way valve is provided on the outer surface of the exhaust pipe.

[0020] According to the above technical solution: the cavity between the delivery pipe and the protection pipe is evacuated by a high-pressure fan, and vacuum insulation is performed, thereby further reducing heat loss and improving waste heat utilization.

[0021] As a preferred technical solution of the present invention, the oxygen supply mechanism includes an air inlet pipe, which is fixedly installed at the input end of the high-pressure fan, a filter box is fixedly installed on the top of the base, a through hole is opened on the outer surface of the filter box, a filter net is arranged inside the through hole, the free end of the air inlet pipe is connected with the filter box, a first rotating rod is rotatably installed inside the air inlet pipe, a first spiral blade is fixedly installed on the outer surface of the first rotating rod, a scraper is fixedly installed on the outer surface of the first rotating rod, and the scraper slides on the outer surface of the filter net.

[0022] According to the above technical solution: the scraper can be used to remove dust from the filter to avoid clogging of the filter, and the second spiral blade can increase the mixing speed of the waste heat and cold air inside the air outlet pipe, further improving the preheating effect of the air.

[0023] As a preferred technical solution of the present invention, a second rotating rod is rotatably installed inside the preheating mechanism, a second spiral blade is fixedly installed on the outer surface of the second rotating rod, and belts are installed on the outer surfaces of the second rotating rod and the first rotating rod.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention can supply oxygen to the closed combustion furnace by arranging a high-pressure fan when the combustion furnace is in use, thereby increasing the combustion time inside the combustion furnace. At the same time, when the combustion furnace is in use, by arranging an air cylinder, when the temperature inside the combustion furnace is too high, the air cylinder will drive the ball shaft inside the high-pressure fan to rotate, thereby controlling the oxygen supply of the high-pressure fan, thereby reducing the combustion effect inside the combustion furnace and achieving cooling. Moreover, the control of the air cylinder can keep the temperature inside the combustion furnace constant, thereby improving the forging effect.

[0026] 2. The present invention can discharge the flue gas and waste heat generated inside the combustion furnace by arranging a conveying pipe. At this time, the water source inside the water pipe is heated by the waste heat, thereby absorbing and reusing the waste heat. In addition, a protective pipe is arranged on the outer surface of the conveying pipe, and vacuum insulation is performed on the outer surface of the conveying pipe by a high-pressure fan, thereby further reducing heat loss and improving the utilization rate of waste heat.

[0027] 3. The present invention can discharge part of the waste heat inside the conveying pipe and preheat the output end of the high-pressure fan by arranging a heat-conducting pipe, so that when the high-pressure fan is used to supply oxygen to the combustion furnace, the entry of cold air is reduced to affect the combustion temperature, thereby affecting the forging accuracy. At the same time, the second spiral blade can increase the mixing speed of the waste heat and cold air, further improving the preheating effect of the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 It is a side view structural schematic diagram of the present invention;

[0030] Figure 3 It is a schematic diagram of the internal structure of the combustion furnace shell of the present invention;

[0031] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at A in FIG.

[0032] Figure 5 It is a schematic diagram of the internal structure of the delivery pipe of the present invention;

[0033] Figure 6 It is a schematic diagram of the internal structure of the air inlet pipe of the present invention;

[0034] Figure 7 It is a schematic diagram of the internal structure of the heat pipe of the present invention.

[0035] In the figure: 1, base; 2, high pressure fan; 3, combustion furnace shell; 4, combustion furnace generator; 5, quantitative mechanism; 501, connecting pipe; 502, piston; 503, air cylinder; 504, spring; 505, support rod; 506, rack; 507, gear; 508, fixing rod; 509, fixing frame; 510, air outlet pipe; 511, ball shaft; 6, heat preservation mechanism; 601, protection pipe; 602, delivery pipe; 603, annular water pipe; 604, Cavity; 605, cylinder; 606, one-way valve; 607, exhaust pipe; 7, oxygen supply mechanism; 701, carbon box; 702, drying mechanism; 703, heat pipe; 704, first spiral blade; 705, air inlet pipe; 706, filter box; 707, filter screen; 708, scraper; 709, first rotating rod; 710, belt; 711, second rotating rod; 712, second spiral blade; 713, guide plate; 8, drive motor; 9, combustion furnace body. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-7 The present invention provides a technical solution for a combustion furnace waste heat recovery and utilization device:

[0038] Embodiment 1:

[0039] See also Figure 1 , Figure 2 and Figure 3 A combustion furnace waste heat recovery and utilization device includes a base 1, a combustion furnace shell 3 is fixedly installed on the top of the base 1, a combustion furnace generator 4 is arranged on the top of the combustion furnace shell 3, a combustion furnace body 9 is fixedly installed inside the combustion furnace shell 3, a driving motor 8 is fixedly installed on the top of the base 1, the output end of the driving motor 8 is installed with the combustion furnace body 9, and the air outlet pipe 510 is connected with the combustion furnace body 9.

[0040] See also Figure 5 , Figure 6 and Figure 7The bottom end of the combustion furnace shell 3 is provided with an oxygen supply mechanism 7, and the oxygen supply mechanism 7 includes an air inlet pipe 705, which is fixedly installed at the input end of the high-pressure fan 2. When the combustion furnace body 9 is in use, the high-pressure fan 2 can supply oxygen to the inside of the closed combustion furnace shell 3, which can increase the combustion time inside the combustion furnace shell 3. A filter box 706 is fixedly installed on the top of the base 1. The outer surface of the filter box 706 is provided with a through hole, and a filter screen 707 is arranged inside the through hole. The free end of the air inlet pipe 705 is connected with the filter box 706, and a first rotating rod 709 is rotatably installed inside the air inlet pipe 705. The outer surface of the first rotating rod 709 is fixedly installed with a first spiral blade 704, and the outer surface of the first rotating rod 709 is fixedly installed with a scraper 708, and the scraper 708 slides on the outer surface of the filter screen 707, and the filter screen 707 can be dusted by the scraper 708 to avoid clogging of the filter screen 707.

[0041] See also Figure 3 and Figure 4 The output end of the oxygen supply mechanism 7 is provided with a quantitative mechanism 5 with an air cylinder 503, the quantitative mechanism 5 includes an air cylinder 503, the air cylinder 503 is connected to the combustion furnace shell 3, a high-pressure fan 2 is fixedly installed on the top of the base 1, the high-pressure fan 2 is connected to the combustion furnace shell 3, an air outlet pipe 510 is fixedly installed on the output end of the high-pressure fan 2, a ball shaft 511 is arranged inside the air outlet pipe 510, the air cylinder 503 is arranged on the top of the ball shaft 511, the air cylinder 503 is fixedly installed on the outer surface of the combustion furnace shell 3, a connecting pipe 501 is fixedly installed at one end of the air cylinder 503, the connecting pipe 501 is connected to the combustion furnace shell 3, a piston 502 is slidably installed inside the air cylinder 503, and a piston 502 is fixedly installed between the piston 502 and the inner wall of the air cylinder 503. A spring 504 is installed, and the piston 502 can be reset by the elastic force of the spring 504, thereby increasing the air output and thus the oxygen supply, so as to increase the temperature inside the combustion furnace shell 3. A round hole is opened at one end of the air cylinder 503, and a fixing frame 509 is fixedly installed on the top of the air outlet pipe 510, and a fixing rod 508 is rotatably installed inside the fixing frame 509. The fixing frame 509 can increase the rotation stability of the fixing rod 508. A support rod 505 is fixedly installed on one end of the piston 502, and a rack 506 is fixedly installed on the free end of the support rod 505. A fixing rod 508 is fixedly installed on the top of the ball shaft 511, and a gear 507 is fixedly installed on the top of the fixing rod 508, and the rack 506 is meshed with the gear 507.

[0042] Embodiment 2:

[0043] Based on the first embodiment, refer to Figure 1 , Figure 3 and Figure 5A delivery pipe 602 is fixedly installed on the top of the base 1, and the free end of the delivery pipe 602 is connected to the combustion furnace shell 3. An annular water pipe 603 is fixedly installed inside the delivery pipe 602, and an inlet pipe and an outlet pipe are respectively provided at both ends of the annular water pipe 603. Valves are provided on the outer surfaces of the inlet pipe and the outlet pipe. A carbon box 701 is fixedly installed on the inner wall of the delivery pipe 602 close to the heat conduction pipe 703, and the carbon box 701 is connected to the heat conduction pipe 703. A cylinder 605 is fixedly installed on the inner bottom wall of the delivery pipe 602, and the cylinder 605 is connected to the delivery pipe 602. Activated crushed carbon is provided inside the carbon box 701 and the cylinder 605. The flue gas can be filtered by the carbon box 701 and the cylinder 605 and the activated crushed carbon inside, and then the filtered flue gas is discharged through the through hole to avoid pollution to the environment.

[0044] The outer surface of the combustion furnace shell 3 is provided with an insulation mechanism 6 with a protective tube 601, and the insulation mechanism 6 is connected with the quantitative mechanism 5. The insulation mechanism 6 includes a protective tube 601, and the protective tube 601 is fixedly installed on the outer surface of the delivery pipe 602. A cavity 604 is provided between the delivery pipe 602 and the protective tube 601. The cavity 604 between the delivery pipe 602 and the protective tube 601 is evacuated and vacuum-insulated by the high-pressure fan 2, so as to further reduce heat loss and improve the utilization rate of waste heat. An exhaust pipe 607 is provided between the input end of the high-pressure fan 2 and the cavity 604, and a one-way valve 606 is provided on the outer surface of the exhaust pipe 607. By providing the one-way valve 606, it is possible to prevent cold air from flowing back, thereby affecting the vacuum insulation effect.

[0045] Embodiment three:

[0046] Based on the second embodiment, refer to Figure 1 , Figure 5 , Figure 6 and Figure 7The output end of the heat preservation mechanism 6 is provided with a preheating mechanism, which includes a heat conduction pipe 703, which is fixedly installed between the delivery pipe 602 and the air outlet pipe 510, and the two ends of the heat conduction pipe 703 are respectively connected with the delivery pipe 602 and the air outlet pipe 510, and the air outlet pipe 510 is fixedly provided with a guide plate 713 inside the air outlet pipe 510 near the heat conduction pipe 703. The guide plate 713 can prevent the cold air from flowing back, guide the cold air and the preheating, and improve the mixing effect. The outer surface of the heat conduction pipe 703 is provided with a drying mechanism 702, and the heat conduction pipe 703 It is connected to the drying mechanism 702, and the waste heat can be dried by the drying mechanism 702 to prevent steam and water droplets generated on the surface of the water pipe from affecting the internal operation of the combustion furnace body 9. The second rotating rod 711 is rotatably installed inside the preheating mechanism, and the outer surface of the second rotating rod 711 is fixedly installed with a second spiral blade 712. The outer surfaces of the second rotating rod 711 and the first rotating rod 709 are driven by a belt 710. The second spiral blade 712 can increase the mixing speed of the waste heat and cold air inside the air outlet pipe 510, thereby further improving the preheating effect of the air.

[0047] The working principle of the combustion furnace waste heat recovery and utilization device of the present invention is:

[0048] During specific use, first, when the combustion furnace body 9 is in use, by starting the high-pressure fan 2, the high-pressure fan 2 can supply oxygen to the inside of the closed combustion furnace shell 3 when the combustion furnace body 9 is in use, so as to increase the combustion time inside the combustion furnace shell 3. At the same time, when the combustion furnace body 9 is in use, by providing the gas cylinder 503, when the temperature inside the combustion furnace is too high, the piston 502 inside the gas cylinder 503 will move, and the piston 502 drives the support rod 505 to move, and the support rod 505 drives the rack 506 to move, and the rack 506 drives the gear 507 to rotate, and the gear 507 drives the fixed rod 508 to rotate, and the fixed rod 508 drives the ball shaft 511 to rotate. At this time, the size of the connecting gap between the ball shaft 511 and the air outlet pipe 510 can be used to control the oxygen supply of the high-pressure fan 2, thereby reducing the combustion effect inside the combustion furnace shell 3 and achieving cooling. Moreover, through the elastic force of the spring 504, the oxygen supply is controlled to increase, thereby keeping the combustion temperature inside the combustion furnace body 9 constant and improving the forging effect.

[0049] Furthermore, when the combustion furnace body 9 is in use, by providing a delivery pipe 602, the smoke and waste heat generated inside the combustion furnace can be discharged, and the water source inside the annular water pipe 603 can be heated by the waste heat, thereby absorbing and reusing the waste heat, and the water source inside the annular water pipe 603 can be replaced by the water inlet pipe and the water outlet pipe, so that the waste heat can be continuously absorbed and recycled, thereby reducing heat loss. At the same time, a protective pipe 601 is provided on the outer surface of the delivery pipe 602, and the cavity 604 between the delivery pipe 602 and the protective pipe 601 is evacuated and vacuum insulation is performed by the high-pressure fan 2, thereby further reducing heat loss and improving the utilization rate of waste heat.

[0050] Furthermore, by providing a heat conducting pipe 703 between the cavity 604 and the air inlet pipe 705, part of the waste heat inside the delivery pipe 602 can be conducted out, so as to realize preheating of the output end of the high-pressure blower 2, so that when the high-pressure blower 2 realizes oxygen supply to the combustion furnace, the entry of cold air is reduced to affect the combustion temperature, thereby affecting the forging accuracy, and when the cold air is introduced, the air can be filtered to avoid clogging of the pipeline and affecting the oxygen supply, and at the same time, the wind force of the air inlet pipe 705 is affected, so that the first spiral blade 7 04 rotates, the first spiral blade 704 drives the scraper 708 to rotate, and the scraper 708 can be used to remove dust from the filter 707 to avoid clogging of the filter 707. The rotation of the second spiral blade 712 drives the first rotating rod 709 to rotate, and the first rotating rod 709 drives the belt 710 to move, and the belt 710 drives the second rotating rod 711 to rotate, and the second rotating rod 711 drives the second spiral blade 712 to rotate. The second spiral blade 712 can increase the mixing speed of the residual heat and cold air inside the air outlet duct 510, thereby further improving the preheating effect of the air.

[0051] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A combustion furnace waste heat recovery device, comprising a base (1), characterized in that: A combustion furnace shell (3) is fixedly mounted on the top of the base (1), a combustion furnace generator (4) is arranged on the top of the combustion furnace shell (3), an oxygen supply mechanism (7) is arranged on the bottom of the combustion furnace shell (3), a quantitative mechanism (5) with an air cylinder (503) is arranged at the output end of the oxygen supply mechanism (7), a heat preservation mechanism (6) with a protective tube (601) is arranged on the outer surface of the combustion furnace shell (3), the heat preservation mechanism (6) is connected with the quantitative mechanism (5), and a preheating mechanism is arranged at the output end of the heat preservation mechanism (6); The quantitative mechanism (5) comprises an air cylinder (503), the air cylinder (503) being connected to the combustion furnace shell (3), a high-pressure fan (2) being fixedly mounted on the top of the base (1), the high-pressure fan (2) being connected to the combustion furnace shell (3), an air outlet pipe (510) being fixedly mounted on the output end of the high-pressure fan (2), a ball shaft (511) being arranged inside the air outlet pipe (510), and the air cylinder (503) being arranged at the top of the ball shaft (511).

2. The combustion furnace waste heat recovery device according to claim 1 is characterized in that: The gas cylinder (503) is fixedly mounted on the outer surface of the combustion furnace shell (3); a connecting pipe (501) is fixedly mounted on one end of the gas cylinder (503); the connecting pipe (501) is communicated with the combustion furnace shell (3); a piston (502) is slidably mounted inside the gas cylinder (503); a support rod (505) is fixedly mounted on one end of the piston (502); a rack (506) is fixedly mounted on the free end of the support rod (505); a fixing rod (508) is fixedly mounted on the top end of the ball shaft (511); a gear (507) is fixedly mounted on the top end of the fixing rod (508); and the rack (506) is meshed with the gear (507).

3. The combustion furnace waste heat recovery device according to claim 2 is characterized in that: A spring (504) is fixedly installed between the piston (502) and the inner wall of the air cylinder (503), a circular hole is opened at one end of the air cylinder (503), a fixing frame (509) is fixedly installed at the top end of the air outlet pipe (510), and the fixing rod (508) is rotatably installed inside the fixing frame (509).

4. The combustion furnace waste heat recovery device according to claim 1 is characterized in that: A combustion furnace body (9) is fixedly installed inside the combustion furnace shell (3), a driving motor (8) is fixedly installed on the top of the base (1), an output end of the driving motor (8) is installed with the combustion furnace body (9), and an air outlet pipe (510) is connected with the combustion furnace body (9).

5. The combustion furnace waste heat recovery device according to claim 1, characterized in that: A delivery pipe (602) is fixedly installed at the top of the base (1), the free end of the delivery pipe (602) is connected to the combustion furnace shell (3), an annular water pipe (603) is fixedly installed inside the delivery pipe (602), and a water inlet pipe and a water outlet pipe are respectively arranged at both ends of the annular water pipe (603), and valves are arranged on the outer surfaces of the water inlet pipe and the water outlet pipe.

6. The combustion furnace waste heat recovery device according to claim 1, characterized in that: The preheating mechanism comprises a heat conducting pipe (703), the heat conducting pipe (703) being fixedly installed between the delivery pipe (602) and the air outlet pipe (510), the two ends of the heat conducting pipe (703) being respectively connected to the delivery pipe (602) and the air outlet pipe (510), a guide plate (713) being fixedly installed inside the air outlet pipe (510) close to the heat conducting pipe (703), a drying mechanism (702) being arranged on the outer surface of the heat conducting pipe (703), and the heat conducting pipe (703) being connected to the drying mechanism (702).

7. The combustion furnace waste heat recovery device according to claim 5, characterized in that: A carbon box (701) is fixedly installed on the inner wall of the delivery pipe (602) close to the heat conduction pipe (703), and the carbon box (701) is connected to the heat conduction pipe (703). A cylinder (605) is fixedly installed on the inner bottom wall of the delivery pipe (602), and the cylinder (605) is connected to the delivery pipe (602). The interiors of the carbon box (701) and the cylinder (605) are both provided with activated carbon chips.

8. The combustion furnace waste heat recovery device according to claim 1, characterized in that: The heat preservation mechanism (6) comprises a protective tube (601), wherein the protective tube (601) is fixedly mounted on the outer surface of the delivery tube (602), a cavity (604) is provided between the delivery tube (602) and the protective tube (601), an exhaust pipe (607) is provided between the input end of the high-pressure fan (2) and the cavity (604), and a one-way valve (606) is provided on the outer surface of the exhaust pipe (607).

9. The combustion furnace waste heat recovery device according to claim 1, characterized in that: The oxygen supply mechanism (7) comprises an air inlet pipe (705), wherein the air inlet pipe (705) is fixedly mounted at the input end of the high-pressure blower (2); a filter box (706) is fixedly mounted on the top of the base (1); a through hole is formed on the outer surface of the filter box (706); a filter screen (707) is arranged inside the through hole; a free end of the air inlet pipe (705) is connected to the filter box (706); a first rotating rod (709) is rotatably mounted inside the air inlet pipe (705); a first spiral blade (704) is fixedly mounted on the outer surface of the first rotating rod (709); a scraper (708) is fixedly mounted on the outer surface of the first rotating rod (709), and the scraper (708) slides on the outer surface of the filter screen (707).

10. The combustion furnace waste heat recovery device according to claim 9, characterized in that: A second rotating rod (711) is rotatably mounted inside the preheating mechanism, a second spiral blade (712) is fixedly mounted on the outer surface of the second rotating rod (711), and belts (710) are transmission-mounted on the outer surfaces of the second rotating rod (711) and the first rotating rod (709).

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