RTO device provided with a purge cleaning mechanism

Abstract

The utility model relates to RTO equipment technical field, specifically disclose a kind of RTO equipment with purging cleaning mechanism, including heat preservation bucket, the outer surface of heat preservation bucket is fixedly installed with heat preservation combustion chamber, rotatingly installed with rotating barrier bucket in the inside of heat preservation bucket, the one end fixedly installed with deceleration servo motor of heat preservation bucket away from heat preservation combustion chamber.This kind of RTO equipment with purging cleaning mechanism, when cleaning, the gate valve is closed can cut off exhaust pipe, let the hot air handled by exhaust fan can be sent into blowing cleaning nozzle in back gas pipe, let the hot gas of blowing cleaning nozzle can be blown to the first regenerator, to be blown by the hot gas and the speed of airflow through softening and stripping the impurities on the surface of first regenerator, so that first regenerator is not blocked, guarantee the stability of waste gas treatment quality and the efficiency of heat recovery when RTO equipment is used.

Description

Technical Field

[0001] This utility model relates to the field of RTO equipment technology, specifically to an RTO equipment equipped with a purging and cleaning mechanism. Background Technology

[0002] Industrial production generates a large amount of waste gas containing volatile organic compounds. If this waste gas is discharged directly, it will not only cause air pollution, but also pose a serious threat to human health. As global environmental regulations become increasingly stringent, the requirements for the treatment of VOCs waste gas are also constantly increasing. Therefore, efficient and stable waste gas treatment equipment has become a core requirement for industrial enterprises. Therefore, RTO equipment for treating VOCs gases has emerged. Regenerative thermal oxidizers have become one of the mainstream technologies for treating medium-to-high concentration VOCs waste gas due to their advantages such as high purification efficiency, high heat recovery efficiency, and relatively low operating costs. Its core principle is to heat the organic waste gas to 760-1000℃ through alternating "heat storage and heat release" of ceramic heat storage bodies, so that VOCs are oxidized and decomposed into harmless CO2 and H2O. However, traditional RTO equipment will produce incomplete oxidation products after use. Over time, these products will accumulate and block the heat storage body, reducing the conversion efficiency and causing the heat storage body to become clogged, leading to the risk of local overheating and combustion, making it extremely inconvenient to use. Utility Model Content

[0003] The purpose of this invention is to provide an RTO device equipped with a purging and cleaning mechanism to solve the problem mentioned in the background art that the heat storage body is easily blocked after long-term use, resulting in a decrease in the waste gas treatment effect and the heat recovery efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An RTO device equipped with a purging and cleaning mechanism includes a heat exchange and insulation tank. A heat-insulating combustion chamber is fixedly installed on the outer surface of the heat exchange and insulation tank, and a burner is installed through one side of the heat-insulating combustion chamber. A rotating baffle tank is rotatably installed inside the heat exchange and insulation tank, and the side surface of the rotating baffle tank is in contact with the inner surface of the heat exchange and insulation tank. A geared servo motor is fixedly installed at the end of the heat exchange and insulation tank away from the heat-insulating combustion chamber. A [unclear - possibly a device or mechanism] is fixedly installed on the ground on one side of the heat exchange and insulation tank. The exhaust pipe has an exhaust fan fixedly installed on the ground near the side of the heat exchange and insulation tank, and the input end of the exhaust fan is connected to the heat exchange and insulation tank. A return gas pipe is installed through the side of the insulation combustion chamber near the exhaust fan, and a first one-way valve is fixedly installed on the outer surface of the return gas pipe. The return gas pipe is connected to the exhaust pipe, and a gate valve is fixedly installed on the outer surface of the exhaust pipe. The return gas pipe is located below the gate valve. An air blowing nozzle is fixedly installed at the end of the return gas pipe inside the insulation combustion chamber, and the nozzle on the outer surface of the air blowing nozzle is designed to be inclined.

[0005] Preferably, a filter collection box is slidably installed at one end of the heat exchange and insulation barrel near the exhaust fan, and a filter screen is provided on the side surface of the filter collection box. The outer surface of the filter collection box is in close contact with the outer surface of the heat exchange and insulation barrel. The side of the heat exchange and insulation barrel near the filter screen of the filter collection box is connected to the exhaust pipe. The filter collection box and the heat exchange and insulation barrel are connected by screws.

[0006] By adopting the above technical solution, the impurities adhering to the surface of the first heat storage body blown by the gas sprayed from the air cleaning nozzle can be collected and filtered through the filter collection box. The filtered gas can be discharged out through the exhaust pipe, so that the impurities can be collected and easily cleaned when cleaning the first heat storage body, and the cleaned impurities will not enter other pipelines and cause blockages, thus improving the convenience of use.

[0007] Preferably, a first gear is fixedly installed at the output end of the deceleration servo motor, and a second gear is rotatably installed on the outer surface of the heat exchange and insulation barrel, and the second gear meshes with the first gear. One end of the second gear is inserted into the rotation barrier barrel, and the rotation barrier barrel is engaged with the second gear. Furthermore, the second gear and the heat exchange and insulation barrel are designed concentrically.

[0008] By adopting the above technical solution, the rotation speed of the first gear and the second gear can be adjusted by using a geared servo motor to control the rotation speed of the rotating block barrel, and the geared servo motor can be easily disassembled and maintained when it is damaged.

[0009] Preferably, a monitoring magnetic photoelectric sensor is fixedly installed on the outer surface of the heat exchange and insulation barrel, and magnets are evenly arranged on the outer surface of the second gear, with the magnets aligned with the monitoring magnetic photoelectric sensor.

[0010] By adopting the above technical solution, in conjunction with the monitoring of the magnet by the magnetic attraction photoelectric sensor, the rotating barrier barrel can be accurately stopped at the corresponding position after rotation, so that the heat exchange insulation barrel, the insulation combustion chamber and the rotating barrier barrel can be connected. At the same time, it is convenient to replace and maintain the magnetic attraction photoelectric sensor when it is damaged.

[0011] Preferably, a first heat storage body is fixedly installed inside the rotating barrier barrel, and the first heat storage body and the rotating barrier barrel are respectively attached to the outer surfaces of the heat exchange insulation barrel and the heat preservation combustion chamber. An exhaust gas inlet pipe is installed through the side surface of the heat preservation combustion chamber, and the exhaust gas inlet pipe is connected to the first heat storage body.

[0012] Using the above technical solution, exhaust gas can be sent into the interior of the heat exchange and insulation tank through the exhaust gas inlet pipe. The exhaust gas passing through is heated by the first heat storage body and then burned. The heat in the exhaust gas can be absorbed and recovered by another first heat storage body to improve the recovery and utilization of heat and reduce energy loss. Different first heat storage bodies can be switched by rotating the barrier tank to maintain the continuity and good effect of the first heat storage body in heating exhaust gas and recovering heat.

[0013] Preferably, a second heat storage body is fixedly installed inside the rotating barrier barrel, and the outer surface of the second heat storage body is not in contact with the inner surface of the heat exchange and insulation barrel, while the outer surface of the second heat storage body is in contact with the outer surface of the first heat storage body. A heating external spray mechanism is provided between the heat exchange and insulation barrel and the heat preservation combustion chamber.

[0014] By adopting the above technical solution, the heat storage capacity in the heat exchange and insulation tank can be further increased through the second heat storage body, so that the waste gas can be heated better when treating the waste gas.

[0015] Preferably, the heating external spray mechanism includes: an air inlet pipe that penetrates the outer surface of the heat exchange insulation barrel and is located between rotating barrier barrels; a gas filling pipe is installed through the outer surface of the heat exchange insulation barrel near the burner, and one end of the gas filling pipe penetrates the outer surface of the insulation combustion chamber; and an electronic regulating valve is fixedly installed on the outer surface of the gas filling pipe.

[0016] Using the above technical solution, when clean gas is sent into the heat exchange and insulation tank through the inlet pipe, it will be heated by the second heat storage body and discharged from the gas supply pipe. This allows the combustion-supporting gas to be heated when the burner burns the exhaust gas, enabling the exhaust gas to be burned better and reducing the probability of impurities remaining in the first heat storage body in the subsequent gas. At the same time, it makes the combusted exhaust gas hotter, allowing the gas to better carry away impurities after passing through the first heat storage body, further ensuring the cleanliness of the first heat storage body.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the RTO equipment equipped with a purging and cleaning mechanism: 1. When the first heat storage body needs to be cleaned, simply close the gate valve to cut off the exhaust pipe. This allows the treated hot air drawn by the exhaust fan to be sent into the air cleaning nozzle through the return air pipe. The hot air sprayed from the air cleaning nozzle can then purge the first heat storage body. The high-pressure hot air and the acceleration of the airflow remove impurities from the outer surface of the first heat storage body. The first heat storage body can be purged by the treated hot air without reheating the gas. This allows the treated gas to be reused without wasting additional energy, prevents the first heat storage body from becoming clogged, and ensures the stability of the RTO equipment and the quality of gas treatment during use. 2. When the flow rate increases and hot air blows away and removes impurities from the outer surface of the first heat storage body, the removed impurities will fall into the interior of the filter collection box and be screened by the filter screen inside the filter collection box. This allows the cleaned impurities to be collected and stored inside the filter collection box, and the filtered gas can be sent into the exhaust pipe and discharged outwards. This prevents impurities from moving around in the pipe and causing blockages. At the same time, it makes it easy to remove the filter collection box for cleaning, greatly improving the convenience of use. 3. During use, gas is introduced into the intake pipe, and the gas is heated by the second heat storage body. The heated gas is then discharged into the heat-insulated combustion chamber through the intake pipe. The flow rate can be adjusted by an electronic regulating valve. In conjunction with the burner's combustion of the exhaust gas, the heated gas can participate in the combustion process, improving the combustion efficiency of the exhaust gas and reducing the burner's energy consumption. This results in better exhaust gas treatment and reduces the generation of impurities. At the same time, the gas becomes hotter, allowing it to soften and carry away impurities as it passes through the first heat storage body. This prevents impurities from accumulating inside the first heat storage body and affecting its operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the heat exchange and insulation tank and the exhaust pipe of this utility model; Figure 2 This is a three-dimensional structural diagram of the second gear and filter collection box of this utility model; Figure 3 This is a cross-sectional three-dimensional structural diagram of the heat exchange and insulation barrel and the insulation combustion chamber of this utility model; Figure 4 This is a three-dimensional exploded view of the geared servo motor and the monitoring magnetic attractor of this utility model. Figure 5 This is an exploded three-dimensional structural diagram of the exhaust fan and filter collection box of this utility model; Figure 6 This is a cross-sectional three-dimensional structural diagram of the rotating barrier barrel and the second heat storage body of this utility model.

[0019] In the diagram: 1. Heat exchange and insulation tank; 2. Insulated combustion chamber; 3. Burner; 4. Exhaust gas inlet pipe; 5. Geared servo motor; 6. First gear; 7. Second gear; 8. Rotating barrier tank; 9. First heat storage body; 10. Second heat storage body; 11. Exhaust fan; 12. Smoke exhaust pipe; 13. Gate valve; 14. Return gas pipe; 15. First one-way valve; 16. Air blowing and cleaning nozzle; 17. Monitoring magnetic photoelectric sensor; 18. Magnet; 19. Filter collection box; 20. Air inlet pipe; 21. Gas supply pipe; 22. Electronic regulating valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-6 This utility model provides a technical solution: an RTO device equipped with a purging and cleaning mechanism, including a heat exchange and insulation tank 1, an insulated combustion chamber 2 fixedly installed on the outer surface of the heat exchange and insulation tank 1, and a burner 3 installed through one side of the insulated combustion chamber 2, a rotating baffle 8 rotatably installed inside the heat exchange and insulation tank 1, and the side surface of the rotating baffle 8 is in contact with the inner surface of the heat exchange and insulation tank 1, a geared servo motor 5 fixedly installed at the end of the heat exchange and insulation tank 1 away from the insulated combustion chamber 2, a flue pipe 12 fixedly installed on the ground on one side of the heat exchange and insulation tank 1, an exhaust fan 11 fixedly installed on the ground on the side of the heat exchange and insulation tank 1 near the exhaust pipe 12, and the input end of the exhaust fan 11 is connected to the heat exchange and insulation tank 1, and the insulated combustion chamber 2 is close to the exhaust fan 1. A return air pipe 14 is installed through one side of the heat exchange and insulation tank 1, and a first one-way valve 15 is fixedly installed on the outer surface of the return air pipe 14. The return air pipe 14 is connected to the exhaust pipe 12, and a gate valve 13 is fixedly installed on the outer surface of the exhaust pipe 12. The return air pipe 14 is located below the gate valve 13. A blowing nozzle 16 is fixedly installed at one end of the return air pipe 14 inside the heat exchange and insulation chamber 2, and the nozzle on the outer surface of the blowing nozzle 16 is designed to be inclined. A filter collection box 19 is slidably inserted at one end of the heat exchange and insulation tank 1 near the exhaust fan 11, and a filter screen is provided on the side surface of the filter collection box 19. The outer surface of the filter collection box 19 is in close contact with the outer surface of the heat exchange and insulation tank 1. The side of the heat exchange and insulation tank 1 near the filter screen of the filter collection box 19 is connected to the exhaust pipe 12.

[0022] Firstly, when cleaning the first heat storage body 9 is required, simply close the gate valve 13 to cut off the passage of the exhaust pipe 12. Combined with the use of the exhaust fan 11, the treated hot gas can be sent through the return pipe 14 into the air blowing nozzle 16. The first one-way valve 15 effectively prevents gas backflow, and the inclined design of the air blowing nozzle 16 allows hot air to be blown into the interior of the first heat storage body 9. The treated hot gas softens the impurities adhering to the outer surface of the first heat storage body 9, and the passage of hot gas further removes the impurities. The airflow allows impurities in the first heat storage body 9 to be better cleaned without the need for additional air heating. The impurities detached from the first heat storage body 9 are carried by the airflow into the filter collection box 19, where they are filtered and collected. This prevents impurities from moving around in the pipes and causing blockages. The filter collection box 19 can also be easily removed for cleaning, ensuring that the first heat storage body 9 remains clean even after long-term use. This also ensures ease of cleaning, reduces energy consumption, and greatly improves the practicality of the RTO equipment.

[0023] A first gear 6 is fixedly installed at the output end of the geared servo motor 5. A second gear 7 is rotatably installed on the outer surface of the heat exchange and insulation barrel 1, and the second gear 7 meshes with the first gear 6. One end of the second gear 7 is inserted into the rotating barrier barrel 8, and the rotating barrier barrel 8 is engaged with the second gear 7. The second gear 7 and the heat exchange and insulation barrel 1 are concentrically designed. A first heat storage body 9 is fixedly installed inside the rotating barrier barrel 8, and the first heat storage body 9 and the rotating barrier barrel 8 are respectively attached to the outer surfaces of the heat exchange and insulation barrel 1 and the heat preservation combustion chamber 2. An exhaust gas inlet pipe 4 is installed through the side surface of the heat preservation combustion chamber 2, and the exhaust gas inlet pipe 4 is connected to the first heat storage body 9. A monitoring magnetic attraction photoelectric sensor 17 is fixedly installed on the outer surface of the heat exchange and insulation barrel 1. Magnets 18 are evenly arranged on the outer surface of the second gear 7, and the magnets 18 are aligned with the monitoring magnetic attraction photoelectric sensor 17.

[0024] Secondly, exhaust gas is introduced into the heat exchange and insulation tank 1 through the exhaust gas inlet pipe 4, allowing the exhaust gas to pass through the first heat storage body 9 and enter the insulation combustion chamber 2, where the burner 3 can ignite and burn the exhaust gas. After the exhaust gas combustion is complete, it absorbs heat through another first heat storage body 9. After the first heat storage body 9 has been used for a period of time, the rotation of the reduction servo motor 5 drives the first gear 6 to rotate, so that the second gear 7 meshing with the first gear 6 can drive the rotation blocking tank 8 to rotate, allowing the first heat storage body 9 to switch. By monitoring the detection of the magnet 18 by the magnetic attraction photoelectric eye 17, the first heat storage body 9 can be accurately stopped at the working position, ensuring the heating efficiency of the exhaust gas and the efficiency of heat recovery, greatly improving the practicality of the RTO equipment.

[0025] A second heat storage body 10 is fixedly installed inside the rotating barrier barrel 8, and the outer surface of the second heat storage body 10 is not in contact with the inner surface of the heat exchange and insulation barrel 1. The outer surface of the second heat storage body 10 is in contact with the outer surface of the first heat storage body 9. A heating external spray mechanism is provided between the heat exchange and insulation barrel 1 and the heat preservation combustion chamber 2. The heating external spray mechanism includes: an air inlet pipe 20, which penetrates the outer surface of the heat exchange and insulation barrel 1 and is located between the rotating barrier barrels 8. A gas filling pipe 21 is installed through the outer surface of the end of the heat exchange and insulation barrel 1 near the burner 3, and one end of the gas filling pipe 21 penetrates the outer surface of the heat preservation combustion chamber 2. An electronic regulating valve 22 is fixedly installed on the outer surface of the gas filling pipe 21.

[0026] Furthermore, after the exhaust gas passes through the first heat storage body 9 after combustion, it continuously conducts heat. The use of the second heat storage body 10 can further improve the heat storage capacity of the RTO equipment, allowing heat to be better recovered and accumulated, further enhancing the recovery of the heat source. After the air enters the heat exchange insulation tank 1 through the air inlet pipe 20, the air can circulate and absorb heat inside the second heat storage body 10. The heated air can then be added to the insulation combustion chamber 2 through the air supply pipe 21, and the flow rate can be adjusted by the electronic regulating valve 22 so that the heated air participates in the combustion of the burner 3. The combustion is ignited by the heating of the air. The burner 3 can achieve more complete combustion of exhaust gas, thereby reducing the generation of impurities after combustion and reducing the adhesion caused by the gradual accumulation of impurities as they pass through the first heat storage body 9. The first heat storage body 9 and the second heat storage body 10 recover the heat generated during combustion, so that no additional energy is needed to heat the air participating in the combustion of the burner 3. The exhaust gas can be heated more after combustion, and the impurities on the surface of the first heat storage body 9 can be softened and removed as the gas passes through it. This greatly improves the convenience of use and reduces energy consumption, ensuring the practicality of the RTO equipment.

[0027] Working principle: Air will enter the interior of the heat exchange and insulation tank 1 through the exhaust gas inlet pipe 4 and pass through the first heat storage body 9. It will be heated by the first heat storage body 9, so that the exhaust gas can participate in the combustion of the burner 3 more fully. After the exhaust gas is burned, it will be discharged from the exhaust pipe 12 through the first heat storage body 9 on the other side and the auxiliary extraction of the exhaust fan 11, so that the heat of the combustion gas can be absorbed again by the first heat storage body 9. When the first heat storage body 9 needs to be purged and cleaned, simply close the gate valve 13 to cut off the exhaust channel of the exhaust pipe 12, allowing the treated hot gas to be discharged into the air cleaning nozzle 16 through the return pipe 14 and sprayed outward. With the extraction of the exhaust fan 11, the air cleaning nozzle 16 can blow the treated hot gas toward the first heat storage body 9, so that the impurities adhering to the surface of the first heat storage body 9 can be softened and peeled off by the hot gas. The peeled impurities will then enter the filter collection box 19 and be filtered, so that the cleaned impurities will not move in the pipe and cause blockage. The rotation of the deceleration servo motor 5 and the detection of the magnet 18 by the magnetic attraction photoelectric eye 17 can make the rotating blocking barrel 8 rotate and stop at the accurate working position, so that the first heat storage body 9 can be purged and cleaned in sequence. Air can be supplied to the interior of the heat exchange and insulation tank 1 through the air inlet pipe 20, so that the air can be heated by the second heat storage body 10 and discharged from the air supply pipe 21. At the same time, the flow rate of the discharged hot gas can be adjusted by the electronic regulating valve 22, so that the hot gas can participate in the combustion of the burner 3, further allowing the exhaust gas to burn more completely, thereby reducing the residue of impurities after the exhaust gas combustion and reducing the adhesion and accumulation of impurities when passing through the first heat storage body 9.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An RTO device equipped with a purging and cleaning mechanism, comprising a heat exchange and insulation tank (1), wherein an insulation combustion chamber (2) is fixedly installed on the outer surface of the heat exchange and insulation tank (1), and a burner (3) is installed through one side of the insulation combustion chamber (2), a rotation barrier tank (8) is rotatably installed inside the heat exchange and insulation tank (1), and the side surface of the rotation barrier tank (8) is in contact with the inner surface of the heat exchange and insulation tank (1), a reduction servo motor (5) is fixedly installed at one end of the heat exchange and insulation tank (1) away from the insulation combustion chamber (2), and a flue pipe (12) is fixedly installed on the ground on one side of the heat exchange and insulation tank (1), characterized in that: An exhaust fan (11) is fixedly installed on the ground near the side of the heat exchange insulation barrel (1) close to the exhaust pipe (12), and the input end of the exhaust fan (11) is connected to the heat exchange insulation barrel (1). A return air pipe (14) is installed through the side of the insulation combustion chamber (2) close to the exhaust fan (11), and a first one-way valve (15) is fixedly installed on the outer surface of the return air pipe (14). The return air pipe (14) is connected to the exhaust pipe (12), and a gate valve (13) is fixedly installed on the outer surface of the exhaust pipe (12). The return air pipe (14) is located below the gate valve (13). An air blowing cleaning nozzle (16) is fixedly installed at one end of the return air pipe (14) inside the insulation combustion chamber (2), and the nozzle on the outer surface of the air blowing cleaning nozzle (16) is designed to be inclined.

2. An RTO device with a purging and cleaning mechanism according to claim 1, characterized in that: A filter collection box (19) is slidably inserted at one end of the heat exchange and insulation barrel (1) near the exhaust fan (11), and a filter screen is provided on the side surface of the filter collection box (19). The outer surface of the filter collection box (19) is in close contact with the outer surface of the heat exchange and insulation barrel (1). The side of the heat exchange and insulation barrel (1) near the filter screen of the filter collection box (19) is connected to the exhaust pipe (12).

3. An RTO device with a purging and cleaning mechanism according to claim 1, characterized in that: The output end of the deceleration servo motor (5) is fixedly installed with a first gear (6), and the outer surface of the heat exchange and insulation barrel (1) is rotatably installed with a second gear (7), and the second gear (7) meshes with the first gear (6). One end of the second gear (7) is inserted into the rotating barrier barrel (8), and the rotating barrier barrel (8) is engaged with the second gear (7). The second gear (7) and the heat exchange and insulation barrel (1) are concentrically designed.

4. An RTO device with a purging and cleaning mechanism according to claim 3, characterized in that: The outer surface of the heat exchange and insulation barrel (1) is fixedly installed with a monitoring magnetic attraction eye (17), and the outer surface of the second gear (7) is uniformly provided with magnets (18), and the magnets (18) are aligned with the monitoring magnetic attraction eye (17).

5. An RTO device with a purging and cleaning mechanism according to claim 1, characterized in that: The first heat storage body (9) is fixedly installed inside the rotating barrier barrel (8), and the first heat storage body (9) and the rotating barrier barrel (8) are respectively attached to the outer surfaces of the heat exchange insulation barrel (1) and the heat insulation combustion chamber (2). The side surface of the heat insulation combustion chamber (2) is connected to the exhaust gas inlet pipe (4), and the exhaust gas inlet pipe (4) is connected to the first heat storage body (9).

6. An RTO device with a purging and cleaning mechanism according to claim 1, characterized in that: The rotating barrier barrel (8) has a second heat storage body (10) fixedly installed inside, and the outer surface of the second heat storage body (10) is not in contact with the inner surface of the heat exchange and insulation barrel (1). The outer surface of the second heat storage body (10) is in contact with the outer surface of the first heat storage body (9). A heating external spray mechanism is provided between the heat exchange and insulation barrel (1) and the heat preservation combustion chamber (2).

7. An RTO device with a purging and cleaning mechanism according to claim 6, characterized in that: The heating external spray mechanism includes: an air inlet pipe (20), which penetrates the outer surface of the heat exchange insulation barrel (1) and is located between the rotating barrier barrels (8). A gas filling pipe (21) is installed through the outer surface of the heat exchange insulation barrel (1) near the burner (3), and one end of the gas filling pipe (21) penetrates the outer surface of the heat-insulating combustion chamber (2). An electronic regulating valve (22) is fixedly installed on the outer surface of the gas filling pipe (21).

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