Low-energy-consumption garbage incinerator flue gas purification device and method

Abstract

The invention belongs to the technical field of waste incineration flue gas purification, and particularly relates to a low-energy-consumption waste incinerator flue gas purification device and method.The low-energy-consumption waste incinerator flue gas purification device comprises a base, an incinerator body, a chimney and an observation window arranged at the end of the incinerator body, an outer cylinder is arranged between two connecting plates, and a plurality of waste gas grooves are formed in the outer surface of the outer cylinder; three arc-shaped plates are movably arranged on the inner side of the outer cylinder, a plurality of gas outlet grooves are formed in the outer sides of the three arc-shaped plates, the gas outlet grooves correspond to the waste gas grooves correspondingly, and through the design that the flue gas uniform adjusting mechanism is matched with the arc-shaped plates and the outer cylinder, the staggered opening degree of the gas outlet grooves and the waste gas grooves can be adjusted in real time, and flue gas distribution in a cavity is dynamically balanced; by dynamically equalizing the flue gas flow, a vortex area and a dead area at the edge of the purification cavity are eliminated, the problems of dust accumulation, local blockage of a filter material and the like are avoided from the source, the circulation resistance of the system is effectively reduced, the load and energy consumption of power equipment such as an induced draft fan and the like are reduced, and the original intention of low-energy-consumption design is met.

Description

Technical Field

[0001] This invention belongs to the field of waste incineration flue gas purification technology, specifically relating to a low-energy-consumption waste incinerator flue gas purification device and method. Background Technology

[0002] With the acceleration of urbanization and the continuous increase in the amount of domestic waste, waste incineration has become the mainstream process for urban solid waste disposal in China due to its core advantages of reduction, harmlessness and resource utilization. The scale of incineration disposal has been expanding year by year, making it a key pillar in the field of solid waste treatment.

[0003] While waste incineration can achieve efficient waste reduction, the composition of incineration flue gas is extremely complex, rich in particulate matter, acidic gases, nitrogen oxides, dioxins, heavy metals, and trace amounts of volatile pollutants. Direct emission of these gases would cause serious harm to the atmospheric environment and human health. Therefore, flue gas purification is a core element for waste incineration plants to achieve compliant operation and production.

[0004] Although existing low-energy flue gas purification devices have reduced basic energy consumption through structural optimization, they still have obvious technical defects due to their own mechanical structure limitations: the internal air inlet chamber, guide plate, reaction chamber and other structural layouts are fixed, the flue gas inlet airflow velocity is uneven and the guide path design is unreasonable, which leads to the problem of uneven dynamic airflow distribution after the flue gas enters the purification chamber. In some areas, the flue gas velocity is too fast and the residence time is insufficient, so the reagent and flue gas cannot fully contact and react, and the pollutant removal efficiency is greatly reduced. Edge areas are prone to forming airflow vortices and dead zones, causing dust accumulation and local blockage of filter media. This not only increases system resistance and power consumption, but also exacerbates local wear and corrosion of equipment. It also leads to fluctuations in purification effect, making it difficult to balance low-energy operation with stable emission standards, and unable to adapt to complex working conditions such as fluctuations in waste calorific value and changes in flue gas load.

[0005] To address the aforementioned problems, this invention proposes a low-energy-consumption waste incinerator flue gas purification device and method. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, this invention provides a low-energy waste incinerator flue gas purification device and method, which features uniform distribution of flue gas inside the incinerator.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a low-energy waste incinerator flue gas purification device, comprising a base, an incinerator body, a chimney, and an observation window disposed at the end of the incinerator body. Two connecting plates are disposed on the inner side of the incinerator body, and an outer cylinder is disposed between the two connecting plates. Multiple exhaust gas slots are formed on the outer surface of the outer cylinder. Three arc-shaped plates are movably disposed on the inner side of the outer cylinder. Multiple exhaust gas slots are formed on the outer sides of the three arc-shaped plates, and the multiple exhaust gas slots correspond to the multiple exhaust gas slots respectively. The ends of the three arc-shaped plates are provided with a flue gas uniform adjustment mechanism, which is used to move the arc-shaped plates to make the exhaust gas groove and the waste gas groove intersect when the flue gas distribution inside the outer cylinder is uneven, thereby balancing the internal flue gas distribution. The inner side of the observation window is provided with a detection mechanism connected to the flue gas uniform adjustment mechanism, which is used to observe the flue gas distribution inside the outer cylinder.

[0008] Preferably, the flue gas uniform adjustment mechanism includes multiple mounting brackets disposed inside the observation window, a mounting ring disposed between the multiple mounting brackets, a movable plate movably disposed on the outer side of the mounting ring, a fixed plate disposed on the side of the movable plate, and the outer side of the fixed plate disposed on the inner side of the arc-shaped plate.

[0009] Preferably, an inner ring is provided on the inner side of the outer cylinder, and an abutment cylinder is provided at the end of the inner ring. The outer side of the abutment cylinder is provided on the inner side of the arc-shaped plate, and multiple springs are provided at the end of the inner ring, with the ends of the multiple springs all located at the end of the arc-shaped plate.

[0010] Preferably, a pneumatic detection device is provided at the end of the mounting ring, a sleeve is provided at the end of the mounting ring, an air cylinder is provided inside the sleeve, a hose is provided between the air cylinder and the pneumatic detection device, and a piston disc is movably provided inside the air cylinder.

[0011] Preferably, a slider is provided on the inner side of the movable plate, a groove is provided on the outer side of the mounting ring, the slider is movably disposed on the inner side of the groove, and a straight rod is provided at the end of the piston disc, the end of the straight rod passing through the air cylinder and disposed on the side of the movable plate.

[0012] Preferably, the detection mechanism includes a mounting plate disposed on the side of the observation window, an air cylinder is disposed on the inner side of the mounting plate, a connecting pipe is disposed on the outer side of the air cylinder, and the end of the connecting pipe is disposed on the inner side of the pneumatic detection device.

[0013] Preferably, a connecting rod is provided on the side of the mounting plate, a rotating plate is rotatably provided at the end of the connecting rod, a rotating ring is provided on the outer side of the rotating plate, a hollow ring is sleeved on the outer side of the rotating ring, and a curved rigid pipe is provided between the air cylinder and the hollow ring.

[0014] Preferably, the hollow ring has a partition plate movably connected to the outer side of the rotating ring on its inner side, the rotating ring has a piston plate on its outer side, the piston plate is movably disposed on the inner side of the hollow ring, the hollow ring has a scale at its end, and the rotating plate has a pointer that passes through the scale on its side.

[0015] In addition, the present invention also provides a low-energy-consumption waste incinerator flue gas purification method, including the low-energy-consumption waste incinerator flue gas purification device provided by the present invention, comprising: S1: After the garbage is placed inside the outer cylinder, it is burned. The flue gas is discharged into the exhaust gas trough inside the outer cylinder through the exhaust trough on the outside of the arc plate, and finally enters the inside of the chimney for discharge. S2: When uneven flue gas distribution occurs, the flue gas inside the incinerator is detected by the flue gas discharge from the chimney. By pushing the three arc plates, the exhaust gas grooves and waste gas grooves on the arc plates are staggered, thereby restoring the discharged flue gas to a uniform state. S3: At this time, the gas condition inside the pneumatic detection device will be transmitted to the first air cylinder through the connecting pipe. Then, the gas inside the first air cylinder will be transmitted to the hollow ring through the curved hard pipe. At this time, the piston plate will be pushed, which will cause the rotating ring and rotating plate to rotate, thereby causing the pointer to rotate. Finally, the data can be read through the scale on the dial.

[0016] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the flue gas uniform adjustment mechanism, in conjunction with the arc plate and outer cylinder, can adjust the staggered opening of the outlet and exhaust gas channels in real time, dynamically balance the flue gas distribution inside the cavity, and completely solve the problem of uneven airflow caused by the solidified structure of traditional devices. In this invention, by dynamically regulating the flue gas flow, the vortex zone and dead zone at the edge of the purification chamber are eliminated, thus avoiding problems such as dust accumulation and local blockage of filter material from the source. This effectively reduces the system flow resistance and the load and energy consumption of power equipment such as induced draft fans, which is in line with the original intention of low energy consumption design. In this invention, the linkage design of the detection mechanism and the flue gas uniform adjustment mechanism can monitor the flue gas distribution in real time and quickly perform adaptive adjustment. It can adapt to complex working conditions such as fluctuations in the calorific value of waste and changes in flue gas load without manual intervention. Compared with traditional fixed structure purification devices, this device can accurately adjust the airflow distribution according to the real-time flue gas conditions, ensuring that the purification effect is stable and avoiding energy waste caused by excessive operation. It achieves a dual balance of low-energy operation and stable emission compliance, and improves the adaptability of the device to working conditions.

[0017] Other additional advantages and benefits of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the base and incinerator body of the present invention; Figure 3 This is a schematic diagram of the structure of the connecting plate, outer cylinder, and detection mechanism of the present invention; Figure 4 This is a schematic diagram of the detection mechanism and flue gas uniformity adjustment mechanism of the present invention; Figure 5 This is an exploded structural diagram of the connecting plate, outer cylinder, arc plate, and mounting bracket of the present invention; Figure 6 This is a schematic diagram of the structure of the inner ring, spring, abutment cylinder, and mounting ring of the present invention; Figure 7 This is an exploded structural diagram of the mounting ring, pneumatic detection device, and moving plate of the present invention. Figure 8 This is an exploded structural diagram of the hose, air cylinder 2, and sleeve of the present invention; Figure 9 This is a schematic diagram of the connecting pipe, air cylinder 1, and curved rigid pipe of the present invention; Figure 10 This is a schematic cross-sectional view of the hollow ring structure of the present invention; Figure 11 This is an exploded structural diagram of the hollow ring, dial, and rotating ring of the present invention.

[0019] In the diagram: 1. Base; 2. Incinerator body; 3. Chimney; 4. Observation window; 5. Connecting plate; 6. Outer cylinder; 7. Waste gas trough; 8. Detection mechanism; 81. Mounting plate; 82. Connecting pipe; 83. Gas cylinder one; 84. Curved rigid pipe; 85. Connecting rod; 86. Hollow ring; 87. Rotating plate; 88. Rotating ring; 89. Piston plate; 810. Partition plate; 811. Pointer; 812. Dial; 9. Flue gas uniform adjustment mechanism; 91. Mounting ring; 92. Flexible hose; 93. Fixed plate; 94. Moving plate; 95. Mounting bracket; 96. Inner ring; 97. Spring; 98. Abutment cylinder; 99. Sleeve plate; 910. Gas cylinder two; 911. Slider; 912. Slide groove; 913. Straight rod; 914. Piston disc; 10. Pneumatic detection device; 11. Arc plate; 12. Gas outlet trough. Detailed Implementation

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

[0021] Example Please see Figures 1-11 The present invention provides the following technical solution: a low-energy waste incinerator flue gas purification device, including a base 1, an incinerator body 2, a chimney 3 and an observation window 4 set at the end of the incinerator body 2. Two connecting plates 5 are set on the inner side of the incinerator body 2, and an outer cylinder 6 is set between the two connecting plates 5. Multiple exhaust gas grooves 7 are opened on the outer surface of the outer cylinder 6. Three arc-shaped plates 11 are movably set on the inner side of the outer cylinder 6. Multiple exhaust gas grooves 12 are opened on the outer side of the three arc-shaped plates 11, and the multiple exhaust gas grooves 12 correspond to the multiple exhaust gas grooves 7 respectively. The ends of the three arc-shaped plates 11 are provided with flue gas uniform adjustment mechanisms 9, which are used to balance the internal flue gas distribution by moving the arc-shaped plates 11 when the flue gas distribution inside the outer cylinder 6 is uneven. The outlet groove 12 and the exhaust groove 7 are intersected. The inner side of the observation window 4 is provided with a detection mechanism 8 connected to the flue gas uniform adjustment mechanism 9, which is used to observe the flue gas distribution inside the outer cylinder 6. Multiple rows of exhaust gas slots 7 are opened around the circumference of the outer cylinder 6. Each arc plate 11 has multiple rows of exhaust gas slots 12. In the initial state, the arc plate 11 is pushed towards the inner ring 96 by the pre-tightening force of the spring 97, so that the exhaust gas slots 12 on each arc plate 11 are basically aligned with the exhaust gas slots 7 on the outer cylinder 6, forming the maximum flue gas flow area. After the flue gas is generated from the furnace, it first passes through the exhaust gas slots 12 in the area of ​​the arc plate 11, and then enters the channel between the outer cylinder 6 and the furnace body through the aligned exhaust gas slots 7, and is finally discharged from the chimney 3. This basic structure provides a physical basis for subsequent dynamic adjustment. Its core is to change the relative covering relationship between the exhaust gas slots 12 and the exhaust gas slots 7 by changing the position of the arc plate 11, thereby realizing the continuous adjustment of the cross-sectional area of ​​the airflow channel.

[0022] The flue gas uniform adjustment mechanism 9 includes multiple mounting brackets 95 disposed inside the observation window 4, a mounting ring 91 disposed between the multiple mounting brackets 95, a movable plate 94 movably disposed outside the mounting ring 91, a fixed plate 93 disposed on the side of the movable plate 94, and the outer side of the fixed plate 93 disposed inside the arc plate 11.

[0023] An inner ring 96 is provided on the inner side of the outer cylinder 6, and an abutment cylinder 98 is provided at the end of the inner ring 96. The outer side of the abutment cylinder 98 is provided on the inner side of the arc plate 11. Multiple springs 97 are provided at the end of the inner ring 96, and the ends of the multiple springs 97 are all provided at the end of the arc plate 11. This pressure difference acts directly on the outer surfaces of the three independent arc-shaped plates 11. The arc-shaped plate 11 in the area with higher pressure will be subjected to a thrust towards the cylinder center, overcoming the elastic force of its back spring 97, and causing the arc-shaped plate 11 to move radially inward. The movement of the arc-shaped plate 11 is transmitted to the moving plate 94 through the fixed plate 93, and the moving plate 94 slides along the slide groove 912 on the mounting ring 91 via the slider 911. The inward movement of the arc-shaped plate 11 causes the air outlet groove 12 on its plate body to be misaligned with the exhaust groove 7 on the outer cylinder 6, partially covering the exhaust groove 7, resulting in a reduction in the airflow channel and an increase in resistance in this area; Meanwhile, the arc-shaped plate 11 in the lower pressure area remains or moves closer to the outer cylinder 6 under the action of the spring 97, resulting in a higher alignment between its outlet groove 12 and exhaust groove 7 and relatively lower flow resistance. This imbalance allows for a redistribution of airflow, making it more uniform. When the pressure returns to equilibrium, each arc-shaped plate 11 automatically returns to its initial position under the action of its corresponding spring 97.

[0024] A pneumatic detection device 10 is provided at the end of the mounting ring 91, a sleeve 99 is provided at the end of the mounting ring 91, an air cylinder 910 is provided inside the sleeve 99, a hose 92 is provided between the air cylinder 910 and the pneumatic detection device 10, and a piston disc 914 is movably provided inside the air cylinder 910.

[0025] A slider 911 is provided on the inner side of the movable plate 94, and a groove 912 is provided on the outer side of the mounting ring 91. The slider 911 is movably disposed on the inner side of the groove 912. A straight rod 913 is provided at the end of the piston disc 914. The end of the straight rod 913 passes through the air cylinder 910 and is disposed on the side of the movable plate 94. When the pneumatic detection device 10 senses a pressure change, its internal gas state changes and is transmitted to the second air cylinder 910 through the hose 92. The piston disc 914 inside the second air cylinder 910 moves axially under the action of air pressure. The piston disc 914 is rigidly connected to the moving plate 94 through the straight rod 913, thereby driving the moving plate 94 to slide radially along the mounting ring 91. The moving plate 94 is also fixed to the inner side of the arc plate 11 through the fixed plate 93, thereby accurately transmitting the linear motion to the arc plate 11 to achieve its radial displacement. The movement of the slider 911 in the slide groove 912 ensures the linearity and stability of the movement trajectory. This set of purely mechanical pneumatic-force conversion and transmission system can realize the instantaneous and automatic position adjustment of the arc plate 11 based on pressure feedback without the need for external power or complex control system. It has a reliable structure and direct response. The spring 97 between the arc plate 11 and the inner ring 96 must be made of a high-temperature elastic alloy to ensure the stability of the elastic coefficient under long-term high-temperature working conditions and to ensure the reliability of the reset function. Although the adjustment mechanism components such as the mounting ring 91, the moving plate 94, and the fixed plate 93 are located inside the observation window 4 and the temperature is relatively low, the influence of heat conduction still needs to be considered. Heat-resistant steel can be used. The pneumatic detection device 10, the hose 92, the first air cylinder 83, and the second air cylinder 910 are gas-sealing components, and their seals must be made of high-temperature resistant silicone rubber or flexible graphite material. Since multiple rows of slots are opened on the outer cylinder 6 and each arc plate 11, the degree of overlap of each row of slots changes synchronously when the arc plate 11 moves radially. By designing slots of a specific width and a reasonable arc plate 11 moving stroke, the area of ​​the airflow channel can be continuously and linearly adjusted from fully open to almost closed. This continuously adjustable mechanism enables the device to respond sensitively to uneven flue gas distribution of different degrees. Whether it is a slight flow deviation or a severe vortex, it can be compensated by a slight or large adjustment of the position of the arc plate 11, thereby achieving multi-level fine airflow uniformity control from macro to micro.

[0026] The testing mechanism 8 includes a mounting plate 81 disposed on the side of the observation window 4, an air cylinder 83 disposed on the inner side of the mounting plate 81, a connecting pipe 82 disposed on the outer side of the air cylinder 83, and the end of the connecting pipe 82 disposed on the inner side of the pneumatic testing device 10.

[0027] A connecting rod 85 is provided on the side of the mounting plate 81. A rotating plate 87 is rotatably provided at the end of the connecting rod 85. A rotating ring 88 is provided on the outside of the rotating plate 87. A hollow ring 86 is sleeved on the outside of the rotating ring 88. A curved rigid tube 84 is provided between the air cylinder 83 and the hollow ring 86.

[0028] The hollow ring 86 has a partition 810 that is movably connected to the outer side of the rotating ring 88. The outer side of the rotating ring 88 has a piston plate 89. The outer side of the piston plate 89 is movably disposed inside the hollow ring 86. The end of the hollow ring 86 has a scale 812. The side of the rotating plate 87 has a pointer 811 that passes through the scale 812. When the flue gas distribution inside the incinerator is uneven, it will cause pressure differences at different circumferential positions inside the outer cylinder 6. This pressure difference will act on the pneumatic detection device 10 in the flue gas uniformity adjustment mechanism 9, causing a change in the internal gas state. This change is transmitted through the connecting pipe 82 to the gas cylinder 83 installed on the side of the observation window 4. The gas pressure or volume change in the gas cylinder 83 is further transmitted to the hollow ring 86 through the curved rigid pipe 84. The hollow ring 86 is divided by the partition plate 810. Its inner cavity is equipped with a rotatable rotating ring 88. A piston plate 89 is fixed on the rotating ring 88. The air pressure pushes the piston plate 89, causing the rotating ring 88 and the rotating plate 87 fixed thereto to rotate. The pointer 811 on the side of the rotating plate 87 rotates accordingly, indicating the specific deflection angle or value on the scale 812, thereby providing the operator with a direct quantitative indication of the flue gas distribution uniformity.

[0029] In addition, the present invention also provides a low-energy-consumption waste incinerator flue gas purification method, including the low-energy-consumption waste incinerator flue gas purification device provided by the present invention, comprising: S1: After the garbage is placed inside the outer cylinder 6, it is burned. The flue gas is discharged into the exhaust gas trough 7 inside the outer cylinder 6 through the exhaust trough 12 on the outside of the arc plate 11, and finally enters the chimney 3 for discharge. S2: When uneven distribution of flue gas occurs, the flue gas inside the incinerator body 2 is detected by the flue gas discharge of the chimney 3. By pushing the three arc plates 11, the exhaust grooves 12 and the waste gas grooves 7 on the arc plates 11 are staggered, thereby restoring the discharged flue gas to a uniform state. S3: At this time, the gas condition inside the pneumatic detection device 10 will be transmitted to the air cylinder 83 through the connecting pipe 82. Then, the gas inside the air cylinder 83 will be transmitted to the hollow ring 86 through the curved hard pipe 84. At this time, the piston plate 89 will be pushed, which will cause the rotating ring 88 and the rotating plate 87 to rotate, thereby causing the pointer 811 to rotate. Finally, the data is read through the scale on the dial 812.

[0030] Components not described in detail in this article are existing technologies.

[0031] The working principle and usage process of the present invention: Under normal working conditions, the arc plate 11 is in the initial position on the outside under the preload of the spring 97, and the air outlet groove 12 on its surface is basically aligned with the exhaust gas groove 7 on the outer cylinder 6 to form the maximum flow area, so that the flue gas can pass through smoothly. When the flue gas distribution inside the incinerator is unbalanced due to uneven waste distribution or combustion, it will directly manifest as uneven circumferential pressure inside the outer cylinder 6. In areas with higher pressure, the flue gas will generate a thrust towards the cylinder center on the outer surface of the arc plate 11. This thrust overcomes the elastic force of the spring 97 on the back of the arc plate 11 and drives the arc plate 11 to move radially inward. The movement of the arc plate 11 is transmitted to the moving plate 94 through the fixed plate 93. The moving plate 94 then slides in the groove 912 of the mounting ring 91 through the slider 911. At the same time, the flue gas uniform adjustment mechanism 9 connected to the moving plate 94 starts to work. The pressure signal is sensed by the pneumatic detection device 10 and transmitted to the second air cylinder 910 through the hose 92, which pushes the piston disc 914 inside. The piston disc 914 is rigidly connected to the moving plate 94 through the straight rod 913, thereby converting the air pressure signal into a mechanical force that drives the arc plate 11 to move, forming a closed-loop feedback, which enhances the sensitivity and stability of the adjustment. The inward movement of the arc plate 11 causes the outlet groove 12 on its plate to be misaligned with the exhaust groove 7 of the outer cylinder 6, partially obscuring the airflow channel. This results in a reduction in the flow cross-sectional area and an increase in resistance in the high-pressure area. Conversely, in the lower-pressure area, the arc plate 11 remains or moves closer to the outer cylinder 6 under the action of the spring 97, resulting in relatively low flow resistance. Under this "one increases, the other decreases" mechanism, the airflow is automatically guided to the low-pressure area until the pressure in each area is restored to balance, thereby achieving a uniform distribution of flue gas across the entire cross-section. After the pressure is balanced, each arc plate 11 automatically resets under the action of the corresponding spring 97. The detection mechanism 8 is linked with the adjustment mechanism for visual monitoring. Pressure changes are transmitted to the air cylinder 83 through the connecting pipe 82, and then the air pressure in the hollow ring 86 is changed through the curved hard pipe 84, which pushes the piston plate 89, drives the rotating ring 88 and the pointer 811 to rotate, and finally indicates the uniformity of the flue gas distribution on the scale 812, providing operators with an intuitive quantitative reference.

[0032] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-energy waste incinerator flue gas purification device, comprising a base (1), an incinerator body (2), a chimney (3), and an observation window (4) disposed at the end of the incinerator body (2), characterized in that, The incinerator body (2) has two connecting plates (5) on its inner side, and an outer cylinder (6) is provided between the two connecting plates (5). The outer surface of the outer cylinder (6) is provided with multiple exhaust gas slots (7). The inner side of the outer cylinder (6) is provided with three arc-shaped plates (11). The outer sides of the three arc-shaped plates (11) are provided with multiple exhaust gas slots (12). The multiple exhaust gas slots (12) correspond to the multiple exhaust gas slots (7) respectively. The ends of the three arc-shaped plates (11) are provided with flue gas uniform adjustment mechanisms (9), which are used to move the arc-shaped plates (11) to make the exhaust groove (12) and the waste gas groove (7) intersect, thereby balancing the internal flue gas distribution when the flue gas distribution inside the outer cylinder (6) is uneven. The inner side of the observation window (4) is provided with a detection mechanism (8) connected to the flue gas uniform adjustment mechanism (9), which is used to observe the flue gas distribution inside the outer cylinder (6).

2. The low-energy waste incinerator flue gas purification device according to claim 1, characterized in that, The flue gas uniform adjustment mechanism (9) includes multiple mounting brackets (95) disposed inside the observation window (4), and mounting rings (91) are disposed between the multiple mounting brackets (95). A movable plate (94) is movably disposed on the outer side of the mounting rings (91), and a fixed plate (93) is disposed on the side of the movable plate (94). The outer side of the fixed plate (93) is disposed on the inner side of the arc plate (11).

3. The low-energy waste incinerator flue gas purification device according to claim 2, characterized in that, The inner side of the outer cylinder (6) is provided with an inner ring (96), and the end of the inner ring (96) is provided with an abutment cylinder (98). The outer side of the abutment cylinder (98) is provided on the inner side of the arc plate (11). The end of the inner ring (96) is provided with a plurality of springs (97), and the ends of the plurality of springs (97) are all provided on the end of the arc plate (11).

4. The low-energy waste incinerator flue gas purification device according to claim 3, characterized in that, The end of the mounting ring (91) is provided with a pneumatic detection device (10), the end of the mounting ring (91) is provided with a sleeve plate (99), the inner side of the sleeve plate (99) is provided with an air cylinder (910), a hose (92) is provided between the air cylinder (910) and the pneumatic detection device (10), and a piston disc (914) is movably provided on the inner side of the air cylinder (910).

5. The low-energy-consumption waste incinerator flue gas purification device according to claim 4, characterized in that, The inner side of the movable plate (94) is provided with a slider (911), and the outer side of the mounting ring (91) is provided with a groove (912). The slider (911) is movably disposed on the inner side of the groove (912). The end of the piston disc (914) is provided with a straight rod (913), and the end of the straight rod (913) passes through the second air cylinder (910) and is disposed on the side of the movable plate (94).

6. The low-energy-consumption waste incinerator flue gas purification device according to claim 1, characterized in that, The detection mechanism (8) includes a mounting plate (81) disposed on the side of the observation window (4), an air cylinder (83) is disposed on the inner side of the mounting plate (81), a connecting pipe (82) is disposed on the outer side of the air cylinder (83), and the end of the connecting pipe (82) is disposed on the inner side of the pneumatic detection device (10).

7. The low-energy waste incinerator flue gas purification device according to claim 6, characterized in that, A connecting rod (85) is provided on the side of the mounting plate (81), and a rotating plate (87) is rotatably provided at the end of the connecting rod (85). A rotating ring (88) is provided on the outside of the rotating plate (87), and a hollow ring (86) is sleeved on the outside of the rotating ring (88). A curved rigid pipe (84) is provided between the air cylinder (83) and the hollow ring (86).

8. The low-energy-consumption waste incinerator flue gas purification device according to claim 7, characterized in that, The hollow ring (86) has a partition (810) on its inner side that is movably connected to the outer side of the rotating ring (88). The rotating ring (88) has a piston plate (89) on its outer side. The outer side of the piston plate (89) is movably disposed on the inner side of the hollow ring (86). The hollow ring (86) has a scale (812) at its end. The rotating plate (87) has a pointer (811) that passes through the scale (812) on its side.

9. A low-energy-consumption method for purifying flue gas from a waste incinerator, characterized in that, The low-energy waste incinerator flue gas purification device according to any one of claims 1 to 8 includes: S1: After the garbage is placed inside the outer cylinder (6), it is burned. The flue gas is discharged into the exhaust gas trough (7) inside the outer cylinder (6) through the exhaust trough (12) outside the arc plate (11), and finally enters the chimney (3) for discharge. S2: When the flue gas distribution is uneven, the flue gas inside the incinerator body (2) is unevenly distributed according to the flue gas discharge of the chimney (3). By pushing the three arc plates (11), the exhaust groove (12) and the waste gas groove (7) on the arc plates (11) are staggered, so that the discharged flue gas is restored to a uniform state. S3: At this time, the gas condition inside the pneumatic detection device (10) will be transmitted to the first air cylinder (83) through the connecting pipe (82). Then, the gas inside the first air cylinder (83) will be transmitted to the hollow ring (86) through the curved hard pipe (84). At this time, the piston plate (89) will be pushed, which will cause the rotating ring (88) and the rotating plate (87) to rotate, thereby causing the pointer (811) to rotate. Finally, the data is read through the scale on the dial (812).

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