Environmental protection project air quality on-line monitoring device and method

Abstract

The invention provides an environmental protection engineering air quality on-line monitoring device and method, and relates to the technical field of air quality monitoring. The environmental protection engineering air quality on-line monitoring device comprises a walking robot, the top of the walking robot is fixedly connected with a fixed mounting shell, and the top of the fixed mounting shell is fixedly connected with a connecting and fixing disc. According to the device, clean air in an air storage bottle enters a second fixed pipeline through a first fixed pipeline and then enters a second equipment bin through a third fixed pipeline, and a snakelike electric heating pipe in the second equipment bin is started to heat air in the second equipment bin; heated air enters the air inlet detection cylinder through a fourth fixed pipeline, a third valve on an exhaust pipeline is opened, air in the air inlet detection cylinder is exhausted, the air in the air inlet detection cylinder is replaced, and therefore it is guaranteed that the air in the detection cylinder does not interfere with detection data; and the accuracy of detection data is ensured.

Description

Technical Field

[0001] This invention relates to the field of air quality monitoring technology, specifically to an online air quality monitoring device and method for environmental engineering. Background Technology

[0002] With the development of the times, more and more buildings are being constructed. During the renovation process, gases such as formaldehyde and carbon dioxide are often released into the indoor air. Long-term exposure to these gases can lead to a series of health problems, making indoor air quality an increasingly important concern. These problems include asthma, allergies, and respiratory infections. Therefore, monitoring indoor air quality has become crucial. By monitoring the concentration of various pollutants and environmental factors in indoor air, indoor air quality can be assessed, and appropriate measures can be taken in a timely manner to improve the environment. Indoor air quality monitors, as specialized devices, can provide accurate data for monitoring indoor air quality.

[0003] Patent publication number CN218272204U discloses a device for detecting indoor air quality in building engineering. The device includes a detection box with detection components fixedly installed inside. These components include an integrated circuit board, on the upper part of which are fixedly mounted an operational amplifier, a formaldehyde sensor, a PM2.5 sensor, a temperature and humidity sensor, and a TVOC sensor. This invention uses these sensors to detect multiple gases in indoor air, including formaldehyde, PM2.5 particles, temperature and humidity, and organic gases, saving time compared to single-gas detection. Furthermore, the device can purify the detected gases by adsorbing, decomposing, and eliminating formaldehyde, PM2.5 particles, and organic gases through a drying adsorption plate, a bamboo crystal plate, and an activated carbon plate, thereby improving air quality and ensuring a healthy lifestyle.

[0004] In the operation of the aforementioned patent, a portion of indoor air is drawn into the detection chamber through the air intake pipe by activating the air intake assembly. The air drawn into the detection chamber surrounds the interior of the chamber, and then the formaldehyde sensor, PM2.5 sensor, temperature and humidity sensor, and TVOC sensor detect the air quality. However, this solution does not take into account the presence of residual air inside the detection chamber, which may contain some organic gaseous substances. This causes the air being detected to mix with the residual air after entering the detection chamber, affecting the accuracy of the detection data. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an online air quality monitoring device and method for environmental engineering, which solves the problem of not taking into account the presence of residual air inside the detection chamber. This residual air may contain organic gases, which can cause the air being detected to mix with these gases after entering the detection chamber, thus affecting the accuracy of the detection data.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an online air quality monitoring device for environmental engineering, comprising a walking robot, a fixed mounting shell fixedly connected to the top of the walking robot, a connecting and fixing disc fixedly connected to the top of the fixed mounting shell, a threaded inner ring fixedly connected to the upper surface of the connecting and fixing disc, a monitoring component installed inside the threaded inner ring, an air intake detection cylinder threadedly connected to the outer surface of the threaded inner ring, a lifting mounting shell fixedly connected to the front of the air intake detection cylinder, and a guide fixedly connected to the inner wall of the lifting mounting shell. A vertical rod body is provided, with a lifting threaded block slidably sleeved on the outer surface of the guide vertical rod body. A driving assembly for driving the lifting threaded block to rise and fall is installed at the bottom of the lifting mounting housing. A mounting hollow block is fixedly connected to the top of the lifting threaded block. An air inlet is fixedly connected to the side wall of the mounting hollow block. An air extraction assembly connected to the mounting hollow block is installed at the top of the air intake detection cylinder. A first equipment compartment is fixedly connected to one side of the outer surface of the air intake detection cylinder. A second equipment compartment is fixedly connected to the other side of the outer surface of the air intake detection cylinder. An air exchange assembly is connected between the first equipment compartment and the second equipment compartment.

[0007] Preferably, the monitoring component includes a connecting base disposed at the bottom of the inner threaded ring body, and rectangular blocks are fixedly connected to all four sides of the connecting base. The rectangular blocks are connected to the bottom of the inner threaded ring body by bolts. An integrated circuit board is fixedly mounted on the upper surface of the connecting base. An operational amplifier, a formaldehyde sensor, a PM2.5 sensor, and a temperature and humidity sensor are mounted on the integrated circuit board.

[0008] Preferably, the drive assembly includes a servo motor fixedly connected to the bottom of the lifting mounting housing. The output shaft of the servo motor is fixedly connected to a threaded rotating rod. The end of the threaded rotating rod away from the servo motor is rotatably connected to the inner top of the lifting mounting housing. The lifting threaded block is threadedly connected to the outer surface of the threaded rotating rod. When the servo motor is started, the output shaft of the servo motor rotates the threaded rotating rod, causing the lifting threaded block to move up and down on the outer surface of the threaded rotating rod, thereby changing the position of the air intake.

[0009] Preferably, the air extraction assembly includes an air pump fixedly connected to the top of the air intake detection cylinder. The inlet of the air pump is fixedly connected to a first air intake pipe. The end of the first air intake pipe away from the air pump passes through the lifting mounting housing and is fixedly connected to an air intake connecting hose. The end of the air intake connecting hose away from the first air intake pipe is connected to the mounting hollow block. The outlet of the air pump is fixedly connected to a second air intake pipe. The end of the second air intake pipe away from the air pump is fixedly connected to the top of the air intake detection cylinder. A first valve is installed on the outer surface of the second air intake pipe. When the air pump is started, indoor air enters the mounting hollow block through the air inlet and then enters the interior of the air intake detection cylinder through the second air intake pipe.

[0010] Preferably, the ventilation assembly includes a mounting plate fixedly connected inside the first equipment compartment. A gas cylinder is fixedly connected to the top of the mounting plate. A gas filling port is provided at the top of the gas cylinder. A first fixed pipe is fixedly connected to the bottom of the gas cylinder. A fourth valve is installed on the first fixed pipe. The end of the first fixed pipe away from the gas cylinder extends to the outside of the first equipment compartment and is fixedly connected to a second fixed pipe. A third fixed pipe is fixedly connected to the end of the second fixed pipe away from the first fixed pipe. The end of the third fixed pipe away from the second fixed pipe is fixedly connected to the bottom of the second equipment compartment. A fourth fixed pipe is fixedly connected to the top of the second equipment compartment. The fourth fixed pipe is located away from the second equipment compartment. One end of the chamber is fixedly connected to the top of the air intake detection cylinder. A second valve is installed on the outer surface of the fourth fixed pipe. A serpentine electric heating tube is fixedly installed inside the second equipment chamber. When the fourth valve on the first fixed pipe is opened, clean air inside the gas storage cylinder enters the second fixed pipe through the first fixed pipe, then enters the third fixed pipe through the second fixed pipe, and then enters the interior of the second equipment chamber through the third fixed pipe. The serpentine electric heating tube inside the second equipment chamber is activated to heat the air inside the second equipment chamber. The heated air enters the interior of the air intake detection cylinder through the fourth fixed pipe. When the third valve on the exhaust pipe is opened, the gas inside the air intake detection cylinder is discharged, and the gas inside the air intake detection cylinder is replaced.

[0011] Preferably, an exhaust pipe is fixedly connected to the rear side of the outer surface of the air intake detection cylinder, a third valve is installed on the outer surface of the exhaust pipe, a limiting and fixing outer ring is fixedly connected to the outer surface of the threaded inner ring, and the bottom end of the air intake detection cylinder abuts against the limiting and fixing outer ring.

[0012] Preferably, a control panel is fixedly mounted on the front side of the fixed mounting housing, and a display is provided on the control panel. The monitoring component, drive component, air extraction component, and air exchange component are all electrically connected to the control panel.

[0013] Preferably, a first battery compartment is fixedly connected to the back of the fixed mounting housing, and a second battery compartment is fixedly connected to the rear side of the outer surface of the air intake detection cylinder. Both the first and second battery compartments are equipped with batteries.

[0014] An online air quality monitoring method for environmental protection projects, the monitoring method comprising the following steps: S1. Before monitoring, open the fourth valve on the first fixed pipe. The clean air inside the gas cylinder enters the second fixed pipe through the first fixed pipe, then enters the third fixed pipe through the second fixed pipe, and then enters the interior of the second equipment compartment through the third fixed pipe. S2. Start the serpentine electric heating tube inside the second equipment compartment to heat the air inside the second equipment compartment. The heated air enters the interior of the air intake detection cylinder through the fourth fixed pipe. Open the third valve on the exhaust pipe to discharge the gas inside the air intake detection cylinder, replace the gas inside the air intake detection cylinder, and dry the interior of the air intake detection cylinder with hot air. S3. After processing is completed, stop heating the air entering the second equipment compartment, so that the temperature inside the air intake detection cylinder drops until the temperature inside the air intake detection cylinder is close to room temperature. Then close the fourth valve on the first fixed pipe and stop the air supply. S4. The walking robot enables the device to move indoors. The air pump is started, and the air pump allows indoor air to enter the hollow block through the air inlet, and then enters the interior of the air intake detection cylinder through the second air intake pipe. The monitoring component detects the air, and the detection data is displayed on the display on the control panel. The servo motor is started, and the output shaft of the servo motor drives the threaded rotating rod to rotate, causing the lifting threaded block to move up and down on the outer surface of the threaded rotating rod, changing the position of the air inlet.

[0015] (III) Beneficial Effects This invention provides an online air quality monitoring device and method for environmental engineering. It has the following beneficial effects: 1. In this invention, the fourth valve on the first fixed pipe is opened, allowing clean air from inside the gas storage cylinder to enter the second fixed pipe through the first fixed pipe, then the third fixed pipe, and finally the interior of the second equipment compartment through the third fixed pipe. The serpentine electric heating element inside the second equipment compartment is activated to heat the air inside. The heated air then enters the interior of the air intake detection cylinder through the fourth fixed pipe. The third valve on the exhaust pipe is opened to discharge the gas inside the air intake detection cylinder, thus replacing the gas inside the cylinder and ensuring that the air inside the detection cylinder does not interfere with the detection data, thereby guaranteeing the accuracy of the detection data.

[0016] 2. This invention utilizes a walking robot to enable the device to move indoors. It activates an air pump, drawing indoor air through the air inlet into the hollow mounting block, and then through a second air inlet pipe into the air intake detection cylinder. The system detects the air through a monitoring component, and the data is displayed on a control panel. A servo motor is activated, its output shaft rotating a threaded rotating rod, causing the lifting threaded block to move up and down on the outer surface of the rod, changing the position of the air inlet. This facilitates monitoring of different locations indoors, ensuring the diversity of the detection data. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of an online air quality monitoring device for environmental engineering provided by the present invention; Figure 2 A schematic diagram of the internal structure of the first equipment compartment of an online air quality monitoring device for environmental engineering provided by the present invention; Figure 3 A schematic diagram of the internal structure of the second equipment compartment of an online air quality monitoring device for environmental engineering provided by the present invention; Figure 4 A schematic diagram of the internal structure of the threaded inner ring of an online air quality monitoring device for environmental engineering provided by the present invention; Figure 5 A schematic diagram of the air intake detection cylinder structure of an online air quality monitoring device for environmental engineering provided by the present invention; Figure 6 This invention provides an online air quality monitoring device for environmental engineering. Figure 1 Enlarged diagram of point A in the middle.

[0018] The components include: 1. Walking robot; 2. Fixed mounting shell; 3. Connecting and fixing disc; 4. Threaded inner ring; 5. Connecting base; 6. Integrated circuit board; 7. Formaldehyde sensor; 8. Limiting and fixing outer ring; 9. Air intake detection cylinder; 10. Lifting and mounting shell; 11. Guide vertical rod; 12. Lifting threaded block; 13. Servo motor; 14. Threaded rotating rod; 15. Mounting hollow block; 16. Air inlet; 17. Air pump; 18. First air intake pipe; 19. Air intake connecting hose; 20. Second air intake pipe; 21. First equipment compartment; 22. Second equipment compartment; 23. Mounting and fixing horizontal plate; 24. Gas storage cylinder; 25. First fixed pipe; 26. Second fixed pipe; 27. Third fixed pipe; 28. Fourth fixed pipe; 29. ​​Serpentine electric heating tube; 30. Exhaust pipe; 31. First battery compartment; 32. Second battery compartment; 33. Control panel. Detailed Implementation

[0019] 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.

[0020] Example: like Figures 1-6 As shown, this embodiment of the invention provides an online air quality monitoring device for environmental engineering, including a walking robot 1. A fixed mounting shell 2 is fixedly connected to the top of the walking robot 1. A connecting and fixing disc 3 is fixedly connected to the top of the fixed mounting shell 2. A threaded inner ring 4 is fixedly connected to the upper surface of the connecting and fixing disc 3. A monitoring component is installed inside the threaded inner ring 4. The monitoring component includes a connecting base 5 located at the bottom of the inner ring 4. Rectangular blocks are fixedly connected to all four sides of the connecting base 5. The rectangular blocks are connected to the bottom of the inner ring 4 by bolts. An integrated circuit board 6 is fixedly installed on the upper surface of the connecting base 5. An operational amplifier, a formaldehyde sensor 7, a PM2.5 sensor, and a temperature and humidity sensor are installed on the integrated circuit board 6. The monitoring component detects relevant data of indoor air quality, referring to the prior art. An air intake detection cylinder 9 is threadedly connected to the outer surface of the inner ring body 4. A lifting mounting housing 10 is fixedly connected to the front of the air intake detection cylinder 9. A guide vertical rod 11 is fixedly connected to the inner wall of the lifting mounting housing 10. A lifting threaded block 12 is slidably sleeved on the outer surface of the guide vertical rod 11. A drive assembly for driving the lifting threaded block 12 to move up and down is installed at the bottom of the lifting mounting housing 10. The drive assembly includes a servo motor 13 fixedly connected to the bottom of the lifting mounting housing 10. A threaded rotating rod 14 is fixedly connected to the output shaft of the servo motor 13. The end of the threaded rotating rod 14 away from the servo motor 13 is rotatably connected to the inner top of the lifting mounting housing 10. The lifting threaded block 12 is threadedly connected to the outer surface of the threaded rotating rod 14. A hollow mounting block 15 is fixedly connected to the top of the lifting threaded block 12. An air inlet 16 is fixedly connected to the side wall of the hollow mounting block 15. An air extraction assembly connected to the hollow mounting block 15 is installed on the top of the air intake detection cylinder 9. The air extraction assembly includes an air pump 17 fixedly connected to the top of the air intake detection cylinder 9. A first air intake pipe 18 is fixedly connected to the inlet of the air pump 17. The end of the first air intake pipe 18 away from the air pump 17 passes through the lifting mounting housing 10 and is fixedly connected to an air intake connecting hose 19. The air intake connecting hose 19 is away from the first air intake pipe 18. One end of the pipe 18 is connected to the hollow block 15. The outlet of the air pump 17 is fixedly connected to the second air inlet pipe 20. The end of the second air inlet pipe 20 away from the air pump 17 is fixedly connected to the top of the air inlet detection cylinder 9. A first valve is installed on the outer surface of the second air inlet pipe 20. An exhaust pipe 30 is fixedly connected to the rear side of the outer surface of the air inlet detection cylinder 9. A third valve is installed on the outer surface of the exhaust pipe 30. A limiting and fixing outer ring 8 is fixedly connected to the outer surface of the threaded inner ring 4. The bottom end of the air inlet detection cylinder 9 abuts against the limiting and fixing outer ring 8. A first equipment compartment 21 is fixedly connected to one side of the outer surface of the air intake detection cylinder 9, and a second equipment compartment 22 is fixedly connected to the other side of the outer surface of the air intake detection cylinder 9. A ventilation assembly is connected between the first equipment compartment 21 and the second equipment compartment 22. The ventilation assembly includes a mounting and fixing horizontal plate 23 fixedly connected inside the first equipment compartment 21. A gas storage cylinder 24 is fixedly connected to the top of the mounting and fixing horizontal plate 23. A gas filling port is provided at the top of the gas storage cylinder 24. A first fixed pipe 25 is fixedly connected to the bottom of the gas storage cylinder 24. A fourth valve is installed on the first fixed pipe 25. The end of the first fixed pipe 25 away from the gas storage cylinder 24 extends... A second fixed pipe 26 extends to the outside of the first equipment compartment 21 and is fixedly connected to it. A third fixed pipe 27 is fixedly connected to the end of the second fixed pipe 26 away from the first fixed pipe 25. The end of the third fixed pipe 27 away from the second fixed pipe 26 is fixedly connected to the bottom of the second equipment compartment 22. A fourth fixed pipe 28 is fixedly connected to the top of the second equipment compartment 22. The end of the fourth fixed pipe 28 away from the second equipment compartment 22 is fixedly connected to the top of the air intake detection cylinder 9. A second valve is installed on the outer surface of the fourth fixed pipe 28. A serpentine electric heating tube 29 is fixedly installed inside the second equipment compartment 22.

[0021] A control panel 33 is fixedly mounted on the front side of the fixed mounting housing 2. The control panel 33 is equipped with a display. The monitoring component, drive component, air extraction component, and air exchange component are all electrically connected to the control panel 33. A first battery compartment 31 is fixedly connected to the back side of the fixed mounting housing 2. A second battery compartment 32 is fixedly connected to the rear side of the outer surface of the air intake detection cylinder 9. Both the first battery compartment 31 and the second battery compartment 32 are equipped with rechargeable batteries. The battery in the first battery compartment 31 supplies power to the control panel 33, monitoring component, and other equipment. The battery in the second battery compartment 32 supplies power to the drive component, air extraction component, and air exchange component, and other equipment.

[0022] This invention also includes an online air quality monitoring method for environmental engineering projects, which includes the following steps: S1. Before monitoring, open the fourth valve on the first fixed pipe 25. The clean air inside the gas storage cylinder 24 enters the second fixed pipe 26 through the first fixed pipe 25, then enters the third fixed pipe 27 through the second fixed pipe 26, and then enters the interior of the second equipment compartment 22 through the third fixed pipe 27. S2. Start the serpentine electric heating tube 29 inside the second equipment compartment 22 to heat the air inside the second equipment compartment 22. The heated air enters the air intake detection cylinder 9 through the fourth fixed pipe 28. Open the third valve on the exhaust pipe 30 to discharge the gas inside the air intake detection cylinder 9, replace the gas inside the air intake detection cylinder 9, and dry the inside of the air intake detection cylinder 9 with hot air. S3. After processing is completed, stop heating the air entering the second equipment compartment 22, so that the temperature inside the air intake detection cylinder 9 drops until the temperature inside the air intake detection cylinder 9 is close to room temperature, then close the fourth valve on the first fixed pipe 25 to stop the air supply. S4. The walking robot 1 moves the device indoors, and the air pump 17 is started. The air pump 17 causes indoor air to enter the hollow block 15 through the air inlet 16, and then enters the air intake detection cylinder 9 through the second air intake pipe 20. The detection is performed by the monitoring component, and the detection data is displayed on the display on the control panel 33. The servo motor 13 is started, and the output shaft of the servo motor 13 drives the threaded rotating rod 14 to rotate, so that the lifting threaded block 12 moves up and down on the outer surface of the threaded rotating rod 14, changing the position of the air inlet 16.

[0023] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online air quality monitoring device for environmental protection engineering, comprising a walking robot (1), characterized in that: The top of the walking robot (1) is fixedly connected to a fixed mounting shell (2), and the top of the fixed mounting shell (2) is fixedly connected to a connecting fixed disc (3). The upper surface of the connecting fixed disc (3) is fixedly connected to a threaded inner ring (4). A monitoring component is installed inside the threaded inner ring (4). An air intake detection cylinder (9) is threadedly connected to the outer surface of the threaded inner ring (4). A lifting mounting shell (10) is fixedly connected to the front of the air intake detection cylinder (9). A guide vertical rod (11) is fixedly connected to the inner wall of the lifting mounting shell (10). A lifting threaded block (12) is slidably sleeved on the outer surface of the guide vertical rod (11). The bottom of the lifting mounting housing (10) is equipped with a driving assembly for driving the lifting threaded block (12) to lift. The top of the lifting threaded block (12) is fixedly connected to a hollow mounting block (15). An air inlet (16) is fixedly connected to the side wall of the hollow mounting block (15). The top of the air intake detection cylinder (9) is equipped with an air extraction assembly connected to the hollow mounting block (15). A first equipment compartment (21) is fixedly connected to one side of the outer surface of the air intake detection cylinder (9). A second equipment compartment (22) is fixedly connected to the other side of the outer surface of the air intake detection cylinder (9). An air exchange assembly is connected between the first equipment compartment (21) and the second equipment compartment (22).

2. The online air quality monitoring device for environmental protection engineering according to claim 1, characterized in that: The monitoring component includes a connecting base (5) located at the bottom of the inner threaded inner ring (4). Rectangular blocks are fixedly connected around the connecting base (5). The rectangular blocks are connected to the bottom of the inner threaded inner ring (4) by bolts. An integrated circuit board (6) is fixedly installed on the upper surface of the connecting base (5). An operational amplifier, a formaldehyde sensor (7), a PM2.5 sensor, and a temperature and humidity sensor are installed on the integrated circuit board (6).

3. The online air quality monitoring device for environmental protection engineering according to claim 2, characterized in that: The drive assembly includes a servo motor (13) fixedly connected to the bottom of the lifting mounting housing (10). The output shaft of the servo motor (13) is fixedly connected to a threaded rotating rod (14). One end of the threaded rotating rod (14) away from the servo motor (13) is rotatably connected to the inner top of the lifting mounting housing (10). The lifting threaded block (12) is threadedly connected to the outer surface of the threaded rotating rod (14).

4. The online air quality monitoring device for environmental protection engineering according to claim 3, characterized in that: The air extraction assembly includes an air pump (17) fixedly connected to the top of the air intake detection cylinder (9). The inlet of the air pump (17) is fixedly connected to a first air intake pipe (18). The end of the first air intake pipe (18) away from the air pump (17) passes through the lifting installation housing (10) and is fixedly connected to an air intake connecting hose (19). The end of the air intake connecting hose (19) away from the first air intake pipe (18) is connected to the installation hollow block (15). The outlet of the air pump (17) is fixedly connected to a second air intake pipe (20). The end of the second air intake pipe (20) away from the air pump (17) is fixedly connected to the top of the air intake detection cylinder (9). A first valve is installed on the outer surface of the second air intake pipe (20).

5. The online air quality monitoring device for environmental protection engineering according to claim 4, characterized in that: The ventilation assembly includes a mounting and fixing horizontal plate (23) fixedly connected inside the first equipment compartment (21). A gas storage cylinder (24) is fixedly connected to the top of the mounting and fixing horizontal plate (23). A gas filling port is provided at the top of the gas storage cylinder (24). A first fixed pipe (25) is fixedly connected to the bottom of the gas storage cylinder (24). A fourth valve is installed on the first fixed pipe (25). The end of the first fixed pipe (25) away from the gas storage cylinder (24) extends to the outside of the first equipment compartment (21) and is fixedly connected to a second fixed pipe (26). The second fixed pipe (26) is away from the gas storage cylinder (24). One end of the first fixed pipe (25) is fixedly connected to a third fixed pipe (27). The end of the third fixed pipe (27) away from the second fixed pipe (26) is fixedly connected to the bottom of the second equipment compartment (22). The top of the second equipment compartment (22) is fixedly connected to a fourth fixed pipe (28). The end of the fourth fixed pipe (28) away from the second equipment compartment (22) is fixedly connected to the top of the air intake detection cylinder (9). A second valve is installed on the outer surface of the fourth fixed pipe (28). A serpentine electric heating tube (29) is fixedly installed inside the second equipment compartment (22).

6. The online air quality monitoring device for environmental protection engineering according to claim 5, characterized in that: An exhaust pipe (30) is fixedly connected to the rear side of the outer surface of the air intake detection cylinder (9). A third valve is installed on the outer surface of the exhaust pipe (30). A limiting fixing outer ring (8) is fixedly connected to the outer surface of the threaded inner ring (4). The bottom end of the air intake detection cylinder (9) abuts against the limiting fixing outer ring (8).

7. The online air quality monitoring device for environmental protection engineering according to claim 6, characterized in that: A control panel (33) is fixedly installed on the front side of the fixed mounting housing (2). A display is provided on the control panel (33). The monitoring component, drive component, air extraction component and air exchange component are all electrically connected to the control panel (33).

8. The online air quality monitoring device for environmental protection engineering according to claim 7, characterized in that: The back of the fixed mounting housing (2) is fixedly connected to the first battery compartment (31), and the rear side of the outer surface of the air intake detection cylinder (9) is fixedly connected to the second battery compartment (32). Both the first battery compartment (31) and the second battery compartment (32) are equipped with batteries.

9. The monitoring method of an online air quality monitoring device for environmental protection engineering according to claim 8, characterized in that: The monitoring method includes the following steps: S1. Before monitoring, open the fourth valve on the first fixed pipe (25). The clean air inside the gas cylinder (24) enters the second fixed pipe (26) through the first fixed pipe (25), then enters the third fixed pipe (27) through the second fixed pipe (26), and then enters the interior of the second equipment compartment (22) through the third fixed pipe (27). S2. Start the serpentine electric heating tube (29) inside the second equipment compartment (22) to heat the air inside the second equipment compartment (22). The heated air enters the interior of the air intake detection cylinder (9) through the fourth fixed pipe (28). Open the third valve on the exhaust pipe (30) to discharge the gas inside the air intake detection cylinder (9), replace the gas inside the air intake detection cylinder (9), and dry the interior of the air intake detection cylinder (9) with hot air. S3. After the process is completed, stop heating the air entering the second equipment compartment (22) so that the temperature inside the air intake detection cylinder (9) decreases until the temperature inside the air intake detection cylinder (9) is close to room temperature. Then close the fourth valve on the first fixed pipe (25) and stop the air supply. S4. The device moves indoors using the walking robot (1), and the air pump (17) is started. Through the action of the air pump (17), indoor air enters the hollow block (15) through the air inlet (16), and then enters the interior of the air intake detection cylinder (9) through the second air intake pipe (20). The detection is performed by the monitoring component, and the detection data is displayed on the display on the control panel (33). The servo motor (13) is started, and the output shaft of the servo motor (13) rotates the threaded rotating rod (14), causing the lifting threaded block (12) to move up and down on the outer surface of the threaded rotating rod (14), changing the position of the air inlet (16).

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