A flue gas monitoring device for boiler combustion

Abstract

The utility model relates to a boiler flue gas monitoring technical field, and disclose a kind of flue gas monitoring devices for boiler combustion, comprising: device shell, upper surface and lower surface are equipped with exhaust seat and gas guide seat respectively, front is equipped with display screen and control button, temperature sensor and flue gas detector are respectively configured on the inner wall upper portion and lower portion around, the communication groove is set in the center of device shell two sides, its inner chamber slidingly connects outer frame plate, the upper surface center of outer frame plate is fixed filter screen plate, two sides are equipped with communication clamping groove and built-in cam clamping plate, cam clamping plate and device shell form rotating connection structure, one side of outer frame plate is equipped with positioning lug, the other side is equipped with positioning recess groove, and the modularization splicing is realized by the embedding of lug and recess groove;The device is slidably matched with the communication groove by lateral pulling type outer frame plate, combined with the rotation locking mechanism of cam clamping plate, the tool-free quick disassembly of filter assembly is realized, and maintenance operation can be completed without disassembling device shell.

Description

Technical Field

[0001] This utility model relates to the field of boiler flue gas monitoring technology, specifically to a flue gas monitoring device for boiler combustion. Background Technology

[0002] A boiler is a device that uses the thermal energy from fuel combustion, electricity, or other energy sources to heat water into hot water or steam. It is widely used in industrial production, power generation, and heating. The basic principle of a boiler is: Energy conversion: Fuel or electrical energy releases heat through combustion or resistance heating; Heat transfer process: Heat energy is transferred to water through metal heating surfaces, causing it to vaporize or heat up; Product output: High-temperature, high-pressure steam or hot water is generated to drive a steam turbine for power generation or is directly used in industrial processes; Boiler applications include power generation, heating, and industry; Boiler combustion produces flue gas, which contains: Particulate matter: Incompletely burned carbon particles, harmful to the respiratory system; Sulfur oxides: Cause acid rain, corroding equipment and buildings; Nitrogen oxides: Form photochemical smog, exacerbating haze; Carbon monoxide: A toxic gas, threatening human health. Flue gas monitoring devices can detect the concentration of these pollutants in real time to ensure emissions meet national standards.

[0003] Traditional flue gas monitoring devices often employ bolt-fixed or embedded installation structures for their filter components. Maintenance requires complete disassembly of the equipment casing, a time-consuming process that carries the risk of accidental contact with delicate internal components. Furthermore, existing filter units are typically customized monolithic structures, unable to be flexibly expanded to meet specific operating conditions. When handling high-dust-concentration or complex flue gas compositions, the only solution is to replace the equipment with different specifications, limiting the applicable scenarios. In addition, the combined installation of multi-stage filtration systems often results in gaps due to mechanical positioning defects, affecting overall sealing performance and causing data distortion due to flue gas leakage, indirectly increasing equipment maintenance costs and raising the technical barrier to entry. Therefore, a flue gas monitoring device for boiler combustion is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a flue gas monitoring device for boiler combustion, thereby solving the technical problem of requiring complete disassembly of the equipment casing during maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flue gas monitoring device for boiler combustion, comprising:

[0006] The device housing, and the exhaust seat and air guide seat are provided on the upper and lower surfaces of the device housing. The front of the device housing is equipped with a display screen and control buttons, and temperature sensors and flue gas detectors are installed on the upper and lower sides of the inner wall of the device housing.

[0007] A connecting groove is opened at the center of both sides of the device housing, and an outer frame plate is slidably connected to the inner cavity of the connecting groove. A filter screen plate is installed at the center of the upper surface of the outer frame plate, and a connecting slot is opened on both sides of the upper surface of the outer frame plate. A cam plate is added to the inner cavity of the connecting slot, and the cam plate is rotatably connected to the device housing.

[0008] A positioning protrusion is added to one side of the outer frame plate, and a positioning groove is provided on the other side of the outer frame plate. The shape and position of the positioning protrusion and the positioning groove correspond to each other.

[0009] The flue gas generated by boiler combustion enters the inner cavity of the device shell through the air guide seat. The air guide seat's guiding structure causes the flue gas to diffuse into the device along a preset path.

[0010] The flue gas passes through the filter screen plate installed at the center of the upper surface of the outer frame plate. The filter screen plate intercepts particulate matter in the flue gas and prevents impurities from entering the detection area.

[0011] A temperature sensor on the upper inner wall of the device housing monitors the flue gas temperature in real time, and the data is transmitted to the control module through a built-in circuit.

[0012] The flue gas detector at the lower part of the inner wall simultaneously analyzes the components of the filtered flue gas, including but not limited to the concentrations of CO, SO2, and NOx.

[0013] After the detection data is processed by the control module, it is presented in digital form on the display screen. Operators can select the display mode or retrieve historical records through the control buttons.

[0014] The flue gas after testing is discharged through the exhaust seat on the upper surface of the device housing. The conical structure of the exhaust seat promotes rapid gas diffusion.

[0015] Rotate the cam plate to disengage it from the connecting slot of the outer frame plate;

[0016] Pull the outer frame plate horizontally along the connecting groove, and the positioning protrusion separates from the positioning groove of the adjacent outer frame plate, so as to realize the quick disassembly and replacement of the filter screen.

[0017] Preferably, the inner wall of the device housing has limiting grooves at both the front and rear ends at its center, and limiting sliders are slidably connected to the inner cavities of these limiting grooves. The limiting grooves at the front and rear ends of the inner wall of the device housing and the limiting sliders connected to the outer frame plate form a sliding fit.

[0018] Preferably, both the limiting groove and the limiting slider are convex in design, and the limiting slider is connected to the center of the front and back sides of the outer frame plate. The limiting grooves at the front and rear ends of the inner wall of the device housing are convex in design, forming a sliding fit with the limiting slider connected to the outer frame plate; when the outer frame plate moves along the axial direction of the limiting groove, the limiting slider slides synchronously in the inner cavity of the limiting groove.

[0019] Preferably, the inner wall of the connecting slot has side connecting holes on both the front and back sides, and a slanted insert rod is slidably connected to the inner cavity of the side connecting hole. The side connecting holes on the inner wall of the connecting slot provide a sliding channel for the slanted insert rod; when an external force is applied to the slanted insert rod, it moves axially along the inner cavity of the side connecting hole.

[0020] Preferably, each of the inclined insert rods has a side connecting circular plate installed at its outer end, and the side connecting circular plate is slidably fitted against the inner wall of the side connecting hole. The side connecting circular plate moves synchronously with the inclined insert rod, and its outer edge remains in a slidably fitted state against the inner wall of the side connecting hole.

[0021] Preferably, a compression spring is provided inside the side connecting hole, and the two ends of the compression spring are respectively connected to the surface of the side connecting circular plate and the inner wall of the side connecting hole. The two ends of the compression spring abut against the surface of the side connecting circular plate and the inner wall of the side connecting hole, so that the inner end of the inclined surface of the inclined rod corresponds to the two sides of the cam plate; when the cam plate rotates, and when the rotational force reaches a certain level, it drives the inclined rod to move outward and compresses the compression spring.

[0022] Preferably, a sealing plate is provided at the top outlet of the exhaust seat, and the sealing plate is rotatably connected to the exhaust seat. The sealing plate rotates on the exhaust seat to control the opening and closing operation of the exhaust seat.

[0023] Preferably, a drive motor is coaxially connected to the rotating end of the sealing plate, and the drive motor is connected to the exhaust seat via a motor mount. The drive motor is fixed to the exhaust seat via the motor mount, and its output shaft is coaxially connected to the rotating end of the sealing plate; when the motor is running, it drives the sealing plate to rotate around the shaft.

[0024] Preferably, the lower surface of the air guide seat has an air inlet end connected to an air guide pipe, and a diversion cavity is formed in the inner cavity of the air guide seat, and the diversion cavity is connected to the air guide pipe. The air guide pipe is connected to the air inlet end of the lower surface of the air guide seat, and the gas enters the inner cavity of the diversion cavity through the air guide pipe.

[0025] Preferably, the upper surface of the gas guide seat is uniformly provided with diversion guide holes, and the diversion guide holes are connected to the diversion cavity. The gas entering the diversion cavity diffuses within its cavity and is distributed through multiple paths by the uniformly distributed diversion guide holes. The gas in the diversion cavity is discharged outward through the diversion guide holes on the upper surface of the gas guide seat.

[0026] Compared with the prior art, this utility model provides a flue gas monitoring device for boiler combustion, which has the following beneficial effects:

[0027] The flue gas monitoring device for boiler combustion features a design that connects the two sides of the device housing with a sliding outer frame plate, allowing the filter screen to be quickly disassembled and installed by horizontal pulling. Combined with the rotating locking mechanism of the cam plate, the maintenance of the filter components can be completed without disassembling the device housing. This side-pulling structure simplifies the cumbersome process of traditional devices that require overall disassembly.

[0028] The modular outer frame system achieves standardized expansion of the filter unit through the interlocking structure of positioning protrusions and grooves. Adjacent outer frame panels can be seamlessly spliced ​​through a mechanical positioning structure. It can be used as a single layer to meet basic filtration needs, or multiple layers can be combined to deal with complex working conditions. While ensuring sealing performance, it improves the adaptability of the equipment to different processing requirements. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the overall detachable structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the air guide seat separation structure of this utility model;

[0032] Figure 4 This is a schematic diagram of the structural composition of the device housing of this utility model;

[0033] Figure 5 This is a schematic diagram of the outer frame structure of this utility model;

[0034] Figure 6 This is an enlarged cross-sectional view of the outer frame plate of this utility model.

[0035] In the diagram: 1. Device housing; 2. Exhaust seat; 3. Air guide seat; 4. Display screen; 5. Control buttons; 6. Temperature sensor; 7. Flue gas detector; 8. Connecting groove; 9. Limiting slide groove; 10. Cam plate; 11. Outer frame plate; 12. Filter screen plate; 13. Limiting slider; 14. Connecting slot; 15. Side connecting hole; 16. Angled insert rod; 17. Side connecting round plate; 18. Compression spring; 19. Positioning protrusion; 20. Positioning groove; 21. Sealing plate; 22. Drive motor; 23. Air guide pipe; 24. Diverting cavity; 25. Diverting guide hole. Detailed Implementation

[0036] 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.

[0037] This utility model provides a technical solution: a flue gas monitoring device for boiler combustion, comprising: (See attached diagram) Figures 1 to 6 The device housing 1, and the exhaust seat 2 and the air guide seat 3 are provided on the upper and lower surfaces of the device housing 1. The front of the device housing 1 is provided with a display screen 4 and control buttons 5, and temperature sensors 6 and flue gas detectors 7 are installed on the upper and lower sides of the inner wall of the device housing 1, respectively.

[0038] A connecting groove 8 is opened at the center of both sides of the device housing 1, and an outer frame plate 11 is slidably connected to the inner cavity of the connecting groove 8. A filter screen plate 12 is installed at the center of the upper surface of the outer frame plate 11, and a connecting slot 14 is opened on both sides of the upper surface of the outer frame plate 11. A cam plate 10 is added to the inner cavity of the connecting slot 14, and the cam plate 10 is rotatably connected to the device housing 1.

[0039] A positioning protrusion 19 is added to one side of the outer frame plate 11, and a positioning groove 20 is provided on the other side of the outer frame plate 11. The shape and position of the positioning protrusion 19 and the positioning groove 20 correspond to each other.

[0040] The flue gas generated by boiler combustion enters the inner cavity of the device shell 1 through the air guide seat 3. The air guide seat 3 guides the flue gas to diffuse into the device along a preset path.

[0041] The flue gas passes through the filter screen 12 installed at the center of the upper surface of the outer frame plate 11. The filter screen 12 intercepts particulate matter in the flue gas to prevent impurities from entering the detection area.

[0042] The temperature sensor 6 on the upper inner wall of the device housing 1 monitors the flue gas temperature in real time, and the data is transmitted to the control module through the built-in line.

[0043] The flue gas detector 7 at the lower part of the inner wall simultaneously analyzes the components of the filtered flue gas, and the detection items include, but are not limited to, the concentrations of CO, SO2 and NOx;

[0044] After the detection data is processed by the control module, it is presented in digital form on the display screen 4. The operator can select the display mode or retrieve the historical records through the control buttons 5.

[0045] The flue gas that has completed the test is discharged through the exhaust seat 2 on the upper surface of the device housing 1. The conical structure of the exhaust seat 2 promotes rapid gas diffusion.

[0046] Rotate the cam plate 10 to disengage it from the connecting slot 14 of the outer frame plate 11;

[0047] Pull the outer frame plate 11 horizontally along the connecting groove 8, and the positioning protrusion 19 separates from the positioning groove 20 of the adjacent outer frame plate 11, so as to realize the quick disassembly and replacement of the filter screen plate 12.

[0048] The snap-fit ​​structure between the cam plate 10 and the connecting slot 14 shortens the disassembly and assembly time of the filter screen plate 12.

[0049] The positioning protrusions 19 and positioning grooves 20 between the outer frame plates 11 form a tenon-and-mortise connection to ensure the sealing when multiple filter units are spliced ​​together.

[0050] The device housing 1 adopts a double-layer exhaust seat 2 and air guide seat 3 design, which effectively disperses the impact force of flue gas and reduces the impact of equipment vibration on detection accuracy.

[0051] Please see Figure 2 , Figure 4 and Figure 5 The inner wall of the device housing 1 has limiting grooves 9 at both the front and rear ends, with limiting sliders 13 slidably connected to the inner cavities of the limiting grooves 9. The limiting grooves 9 at the front and rear ends of the inner wall of the device housing 1 and the limiting sliders 13 connected to the outer frame plate 11 form a sliding fit; the limiting grooves 9 and the limiting sliders 13 restrict the movement direction of the outer frame plate 11. Both the limiting grooves 9 and the limiting sliders 13 are convex designs, and the limiting sliders 13 are connected to the center of the front and back sides of the outer frame plate 11. The convex design of the limiting grooves 9 at the front and rear ends of the inner wall of the device housing 1 forms a sliding fit with the limiting sliders 13 connected to the outer frame plate 11; when the outer frame plate 11 moves axially along the limiting grooves 9, the limiting sliders 13 slide synchronously within the inner cavities of the limiting grooves 9; the limiting grooves 9 and the limiting sliders 13 prevent lateral displacement and ensure the accuracy of the movement trajectory.

[0052] Please see Figure 6The inner wall of the connecting slot 14 has side connecting holes 15 on both the front and back sides, and a beveled insert 16 is slidably connected to the inner cavity of the side connecting hole 15. The side connecting hole 15 on the inner wall of the connecting slot 14 provides a sliding channel for the beveled insert 16; when an external force is applied to the beveled insert 16, it moves axially along the inner cavity of the side connecting hole 15; the cooperation between the beveled insert 16 and the side connecting hole 15 enables a quick insertion function, and the beveled design facilitates automatic guidance during insertion, reducing installation difficulty. A side connecting circular plate 17 is installed on the outer end of the beveled insert 16, and the side connecting circular plate 17 slides against the inner wall of the side connecting hole 15. The side connecting circular plate 17 moves synchronously with the beveled insert 16, and its outer edge remains in a sliding contact with the inner wall of the side connecting hole 15; the side connecting circular plate 17 can prevent the beveled insert 16 from coming out of the side connecting hole 15, and at the same time distribute the force on the insert, avoiding local stress concentration. A compression spring 18 is installed in the inner cavity of the side connecting hole 15, and the two ends of the compression spring 18 are respectively connected to the surface of the side connecting circular plate 17 and the inner wall of the side connecting hole 15. The two ends of the compression spring 18 abut against the surface of the side connecting circular plate 17 and the inner wall of the side connecting hole 15, so that the inner end of the inclined surface of the inclined rod 16 corresponds to the two sides of the cam plate 10. When the cam plate 10 rotates, and when the rotational force reaches a certain level, it drives the inclined rod 16 to move outward and compresses the compression spring 18. The compression spring 18 provides an automatic reset force to ensure that the inclined rod 16 remains in the extended state without external force, thereby improving the connection stability between the cam plate 10 and the outer frame plate 11.

[0053] Please see Figure 2 A sealing plate 21 is added to the top outlet end of the exhaust seat 2, and the sealing plate 21 is rotatably connected to the exhaust seat 2. The sealing plate 21 rotates on the exhaust seat 2, controlling the opening and closing operation of the exhaust seat 2; realizing the opening and closing control of the sealing plate 21. A drive motor 22 is coaxially connected to the rotating end of the sealing plate 21, and the drive motor 22 is connected to the exhaust seat 2 through a motor mount. The drive motor 22 is fixed to the exhaust seat 2 through the motor mount, and its output shaft is coaxially connected to the rotating end of the sealing plate 21; when the motor runs, it drives the sealing plate 21 to rotate around the shaft; the drive motor 22 realizes the automatic opening and closing control of the sealing plate 21, improving the opening and closing response speed of the exhaust channel.

[0054] Please see Figure 3The lower surface of the gas guide seat 3 has an air inlet end connected to an air guide pipe 23, and a flow divider cavity 24 is formed in the inner cavity of the gas guide seat 3, and the flow divider cavity 24 is connected to the air guide pipe 23. The air guide pipe 23 is connected to the air inlet end of the lower surface of the gas guide seat 3, and the gas enters the inner cavity of the flow divider cavity 24 through the air guide pipe 23; the air guide pipe 23 guides the external gas source to the flow divider cavity 24 in a directional manner, ensuring the uniqueness of the gas flow path. The upper surface of the gas guide seat 3 has evenly distributed flow divider holes 25, and the flow divider holes 25 are connected to the flow divider cavity 24. The gas entering the diversion cavity 24 diffuses within its cavity and is distributed through multiple paths via evenly distributed diversion guide holes 25. The gas in the diversion cavity 24 is discharged outward through the diversion guide holes 25 on the upper surface of the gas guide seat 3. The diversion cavity 24 buffers and equalizes the gas to avoid local airflow overload. The multi-point diversion guide holes 25 can expand the exhaust coverage area and improve the uniformity of gas distribution.

[0055] In this scheme: the device housing 1 receives the flue gas generated by the boiler combustion through the lower surface air guide seat 3. The flow-dividing cavity 24 inside the air guide seat 3 performs buffering and pressure equalization treatment on the flue gas. The gas is then dispersed into the inner cavity of the device housing 1 through the evenly distributed flow-dividing guide holes 25. During the upward movement of the flue gas, it first contacts the filter screen plate 12 installed at the center of the upper surface of the outer frame plate 11. The filter screen plate 12 physically intercepts the particulate matter in the flue gas, and the intercepted gas enters the detection area.

[0056] Temperature sensors 6, located around the upper part of the inner wall of the device housing 1, collect flue gas temperature parameters in real time and transmit the data to the control module via built-in circuitry. Flue gas detectors 7, located around the lower part of the inner wall, simultaneously analyze the composition of the filtered flue gas, including CO concentration, SO2 concentration, and NOx concentration. The control module integrates and processes the temperature and composition data and displays the real-time parameters and historical trend curves digitally on the display screen 4. Operators can switch the display interface or recall historical data records using control buttons 5.

[0057] The flue gas after testing is discharged through the exhaust seat 2 on the upper surface of the device housing 1. The top sealing plate 21 of the exhaust seat 2 can adjust the opening of the exhaust channel under the drive of the drive motor 22. When the filter screen 12 needs to be replaced, the cam plates 10 on both sides of the device housing 1 are rotated. During the rotation of the cam plates 10, the inclined insert rod 16 is squeezed and moved outward. The inclined insert rod 16 is compressed and squeezed by the side connecting round plate 17 and exits the connecting slot 14 of the outer frame plate 11.

[0058] The outer frame plate 11 is pulled out laterally along the connecting groove 8. The outer frame plate 11 moves axially along the limiting groove 9 via the limiting slider 13. The positioning protrusion 19 is dislodged from the positioning groove 20 of the adjacent outer frame plate 11, thus realizing the overall disassembly of the filter unit.

[0059] When the new filter plate 12 is installed, the outer frame plate 11 is pushed in the opposite direction along the limiting slide groove 9, the positioning protrusion 19 and the positioning groove 20 form a tenon-and-mortise connection, and after the cam plate 10 is reset, the compression spring 18 pushes the inclined insert rod 16 into the connecting slot 14 to complete the quick fixing of the filter unit.

[0060] The filter screen 12 and the outer frame plate 11 are connected by a detachable snap fastener (the upper surface of the outer frame plate 11 has an annular groove, and the edge of the filter screen 12 has a corresponding snap protrusion). After the outer frame plate 11 is removed, the snap fastener between the filter screen 12 and the outer frame plate 11 can be manually separated to remove the old filter screen; when replacing the new filter screen, align the snap protrusion of the new filter screen 12 with the annular groove of the outer frame plate 11 and press until the snap fastener is engaged and fixed, thus completing the replacement of the filter screen.

[0061] The positioning protrusion 19 has a 15° guide slope at its front end, and the positioning groove 20 has a matching 15° inclined slope at its entrance. When the outer frame plate 11 is pushed in the opposite direction along the limiting slide groove 9, the guide slope of the positioning protrusion 19 contacts the inclined slope of the positioning groove 20. Under the action of the thrust, the inclined slope guides the positioning protrusion 19 to slide into the positioning groove 20 along the slope, realizing the tenon and mortise connection. At the same time, the convex fit between the limiting slider 13 and the limiting slide groove 9 restricts the vertical displacement of the outer frame plate 11, ensuring that the positioning protrusion and the groove are precisely aligned on the same horizontal plane and avoiding misalignment.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] 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. A flue gas monitoring device for boiler combustion, characterized in that, include: The device housing (1) includes an exhaust seat (2) and a guide seat (3) disposed on the upper and lower surfaces of the device housing (1). A display screen (4) and control buttons (5) are respectively provided on the front of the device housing (1). Temperature sensors (6) and flue gas detectors (7) are respectively installed on the upper and lower sides of the inner wall of the device housing (1). A connecting groove (8) is opened at the center of both sides of the device housing (1), and an outer frame plate (11) is slidably connected to the inner cavity of the connecting groove (8). A filter screen plate (12) is installed at the center of the upper surface of the outer frame plate (11), and a connecting slot (14) is opened on both sides of the upper surface of the outer frame plate (11). A cam plate (10) is added to the inner cavity of the connecting slot (14), and the cam plate (10) is rotatably connected to the device housing (1). A positioning protrusion (19) is added to one side of the outer frame plate (11), and a positioning groove (20) is provided on the other side of the outer frame plate (11). The shape and position of the positioning protrusion (19) and the positioning groove (20) correspond to each other.

2. The flue gas monitoring device for boiler combustion according to claim 1, characterized in that: The device housing (1) has a limiting groove (9) at both the front and rear ends of the inner wall center position, and a limiting slider (13) is slidably connected to the inner cavity of the limiting groove (9).

3. The flue gas monitoring device for boiler combustion according to claim 2, characterized in that: The limiting groove (9) and the limiting slider (13) are both convex designs, and the limiting slider (13) is connected to the center of the front and back of the outer frame plate (11).

4. The flue gas monitoring device for boiler combustion according to claim 1, characterized in that: The inner wall of the connecting slot (14) is provided with side connecting holes (15) on both the front and back sides, and a slanted insert rod (16) is slidably connected to the inner cavity of the side connecting hole (15).

5. A flue gas monitoring device for boiler combustion according to claim 4, characterized in that: The outer ends of the inclined inserts (16) are all equipped with side connecting round plates (17), and the side connecting round plates (17) slide against the inner wall of the side connecting holes (15).

6. A flue gas monitoring device for boiler combustion according to claim 5, characterized in that: A compression spring (18) is provided in the inner cavity of the side connecting hole (15), and the two ends of the compression spring (18) are respectively connected to the surface of the side connecting circular plate (17) and the inner wall of the side connecting hole (15).

7. A flue gas monitoring device for boiler combustion according to claim 1, characterized in that: The top air outlet of the exhaust seat (2) is provided with a sealing plate (21), and the sealing plate (21) is rotatably connected to the exhaust seat (2).

8. A flue gas monitoring device for boiler combustion according to claim 7, characterized in that: The rotating end of the sealing plate (21) is coaxially connected to a drive motor (22), and the drive motor (22) is connected to the exhaust seat (2) through a motor seat.

9. A flue gas monitoring device for boiler combustion according to claim 1, characterized in that: The air inlet end of the lower surface of the air guide seat (3) is connected to the air guide pipe (23), and a diversion cavity (24) is opened in the inner cavity of the air guide seat (3), and the diversion cavity (24) is connected to the air guide pipe (23).

10. A flue gas monitoring device for boiler combustion according to claim 9, characterized in that: The upper surface of the air guide seat (3) is uniformly provided with diversion guide holes (25), and the diversion guide holes (25) are connected to the diversion cavity (24).

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