Gas detection device for environment detection

Abstract

The invention belongs to the technical field of gas detection, and discloses a gas detection device for environment detection, which comprises a box body, a filter box is mounted at the bottom of the inner cavity of the box body, a collecting groove is formed in one side of the inner cavity of the filter box, and a filter screen groove is formed in one side, close to the collecting groove, of the inner cavity of the filter box. And compression grooves are formed in one sides of the upper portion and the lower portion of the filter screen groove correspondingly, and one side of an inner cavity of the compression groove on one side is fixedly connected with a spring I. According to the device, after the discharging activity is completed, a motor is started, a first output rod drives a first bevel gear to rotate, and the first bevel gear and a second bevel gear are engaged to drive a second output rod to rotate; the air inlet fan rotates through the second output rod to suck air, needing to be detected, on the outer wall into the box body through the air inlet pipe, then dust carried by the air sucked into the box body through the air inlet pipe is filtered through the filter screen, then the air enters the inner cavity of the box body, and dust or impurities are prevented from entering the box body.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas detection, and in particular relates to a gas detection device for environmental detection. Background Art

[0002] With the rapid development of the economy and the acceleration of the industrialization process, the types and contents of gases in the living environment have changed significantly. Many industrial emissions and traffic pollution have led to an increase in the concentration of certain harmful gases. These gases not only pollute the environment, but also directly threaten human health, especially the malodorous gases in the air. They not only affect air quality, but may also cause respiratory diseases, allergic reactions, and even more serious health problems. Therefore, it is particularly important to monitor the concentration and types of these harmful gases. In order to promptly detect the presence and concentration changes of harmful gases and prevent them from causing harm to human health, gas detection technology has emerged. With the continuous advancement of technology, the application scope of gas detection devices has gradually expanded, covering industrial production, urban air quality monitoring, indoor air purification, mine safety and other fields. These detection devices can issue alarms in time by monitoring gas concentration changes in real time, reminding people to take protective measures and reduce the threat of harmful gases to health. Therefore, the widespread application of gas detection devices is of great significance to improving environmental quality and protecting public health.

[0003] Currently, when using gas detection devices for environmental testing, although the gas detection devices can analyze and detect environmental gases very well, the gas is prone to carry dust or impurities during the transportation and detection process, entering the gas detection device, causing dust or impurities to accumulate, which not only causes dirtiness inside the gas detection device, but also easily affects the accuracy of subsequent gas detection data. Summary of the Invention

[0004] In order to solve the problem raised in the above background technology that dust or impurities are easily carried into the gas detection device during the transportation and detection process, resulting in the accumulation of dust or impurities, which not only causes dirtiness inside the gas detection device, but also easily affects the accuracy of subsequent gas detection data, the present invention provides a gas detection device for environmental detection.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a gas detection device for environmental detection, comprising a box body, a filter box is installed at the bottom of the inner cavity of the box body, a collection groove is provided on one side of the inner cavity of the filter box, a filter screen groove is provided on the side of the inner cavity of the filter box close to the collection groove, compression grooves are provided on the upper and lower sides of the filter screen groove, one side of the inner cavity of the compression groove is fixedly connected with a spring one, the side of the spring one away from the compression groove is fixedly connected with a resistance plate, and the resistance plate slides in the compression groove, the inner cavity of the filter screen groove is slidably connected with a filter screen, and the filter screen resists the resistance plate, the outer wall of the filter screen is fixedly connected with a collection frame at the bottom on the side away from the resistance plate, and the collection frame slides in the collection groove, the filter screen and one side of the collection frame penetrate the filter box and the box body and are slidably connected, and one side outer wall of the box body penetrates the box and the filter box and is fixedly connected to the air inlet pipe.

[0006] Preferably, a motor is installed on one side of the top of the filter box, the bottom of the motor passes through the filter box and is rotatably connected to an output rod 1, an output box is provided on the outer wall of the output rod 1 away from the motor, an end of the output rod 1 away from the motor passes through the output box and is rotatably connected to a bevel gear 1, one side of the output box passes through and is rotatably connected to an output rod 2, one end of the output rod 2 passes through the output box and is rotatably connected to a bevel gear 2, and the bevel gear 2 is meshed with the bevel gear 1, and an end of the output rod 2 away from the bevel gear 2 is fixedly connected to an intake fan, and the intake fan is installed in the inner cavity of the air inlet duct.

[0007] Preferably, wind guide plate 1 is fixedly connected on both sides between the inner cavity of the box and the collection trough, wind guide plate 2 is fixedly connected to the upper and lower parts of one side of wind guide plate 1, and the other end of wind guide plate 2 is connected to the inner cavity of the box, one side of wind guide plate 1 is located between the two wind guide plates 2 and is rotatably connected to a rotating rod 1, and a fan blade is fixedly connected to the middle of the outer wall of the rotating rod 1.

[0008] Preferably, one side of the rotating rod one passes through the wind guide plate one and is rotatably connected to the rotating rod two, the end of the rotating rod two away from the rotating rod one is fixedly connected to the connecting disk, and the side of the connecting disk close to the rotating rod two is fixedly connected to the guide plate.

[0009] Preferably, one side of the wind guide plate is fixedly connected to a connecting plate, the middle of the connecting plate is penetrated and provided with a sliding groove, the inside of the sliding groove is slidably connected to a slide plate, and one side of the slide plate penetrates the connecting plate and is slidably connected to a knocking rod.

[0010] Preferably, a buffer pad is fixedly connected to the side of the knocking rod away from the slide plate, and the buffer pad cooperates with the filter screen.

[0011] Preferably, a connecting block is fixedly connected to one side of the top of the connecting plate, a connecting column 1 is fixedly connected to one side of the connecting block, and a spring 2 is fixedly connected to the outer wall of the connecting column 1.

[0012] Preferably, a second connecting column is fixedly connected to one side of the slide plate, and an outer wall of the second connecting column is fixedly connected to the other end of the second spring, and the second connecting column and the guide plate are in conflict with each other.

[0013] Preferably, a gas analyzer is passed through and installed on an upper portion of one side of the box body, and a detection head is installed on the gas analyzer passing through one side of the box body.

[0014] Preferably, an exhaust fan is installed through a side of the outer wall of the box away from the gas analyzer, and the gas stored in the box can be discharged through the exhaust fan.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention prevents dust or impurities from entering the interior of the box by arranging the coordination of structures such as the motor and the filter screen. After the discharge activity is completed, the motor is turned on to make the output rod one drive the bevel gear one to rotate so that the bevel gear one is engaged with the bevel gear two to drive the output rod two to rotate, and the output rod two is used to rotate the intake fan to draw the air that needs to be detected on the outer wall into the box through the air inlet pipe. When the motor is turned on, the filter screen is first inserted into the filter screen slot. When the filter screen is inserted into the filter screen slot, it will contact the contact plate to compress the spring one. When the filter screen is fully inserted into the filter screen slot, the elastic force of the spring one and the contact plate will contact to fix the filter screen, and at the same time, the filter screen is sealed to prevent some gas from entering the box through the gap. When the filter screen is inserted into the filter screen slot, the collection frame will also be inserted into the collection slot. Then, the dust attached to the gas drawn into the box by the air inlet pipe is filtered through the filter screen, and then enters the inner cavity of the box.

[0016] The present invention avoids clogging of the filter caused by long-term use by arranging the cooperation of the rotating rod 1 and the knocking rod and other structures. The rotating rod 1 will drive the rotating rod 2 to rotate. At this time, the rotating rod 2 will drive the connecting disk and the guide plate to rotate. When the guide plate rotates, it will conflict with the connecting column 2. At this time, the connecting column 2 will drive the slide plate, the knocking rod and the buffer pad to slide in the slide groove, and at the same time stretch the spring 2. When the guide plate rotates and disengages from the conflict with the connecting column 2, the slide plate, the knocking rod and the knocking rod will reset the slide plate through the pulling force of the spring 2. At this time, the knocking rod and the buffer pad will collide with the filter, and knock down the dust attached to the filter after being filtered on the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the gas analyzer of the present invention; Figure 3 This is a schematic diagram of the collection tank of the present invention; Figure 4 Schematic diagram of the first and second air deflector plates of the present invention; Figure 5 This is a schematic diagram of the collection tank and filter tank of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram of the air inlet pipe of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle; Figure 9 This is a second schematic diagram of the fan blades and the rotating rod of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point C in the middle.

[0018] In the figure: 1. Box body; 2. Filter box; 3. Collection tank; 4. Filter screen tank; 5. Compression tank; 6. Spring 1; 7. Contact plate; 8. Filter screen; 9. Collection frame; 10. Air inlet pipe; 11. Motor; 12. Output rod 1; 13. Output box; 14. Bevel gear 1; 15. Output rod 2; 16. Inlet fan; 17. Bevel gear 2; 18. Air guide plate 1; 19. Air guide plate 2; 20. Rotating rod 1; 21. Fan blade; 22. Rotating rod 2; 23. Connecting plate; 24. Guide plate; 25. Connecting plate; 26. Slide; 27. Slide plate; 28. Knocking rod; 29. Buffer pad; 30. Connecting block; 31. Connecting column 1; 32. Spring 2; 33. Connecting column 2; 34. Gas analyzer; 35. Detection head; 36. Exhaust fan. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1 to 10As shown, the present invention provides a gas detection device for environmental detection, including a box body 1, a filter box 2 is installed at the bottom of the inner cavity of the box body 1, a collecting groove 3 is opened on one side of the inner cavity of the filter box 2, a filter screen groove 4 is opened on the side of the inner cavity of the filter box 2 close to the collecting groove 3, and compression grooves 5 are opened on the upper and lower sides of the filter screen groove 4. A spring 6 is fixedly connected to one side of the inner cavity of one side compression groove 5, and a spring 6 is fixedly connected to a side away from the compression groove 5 with a resistance plate 7, and the resistance plate 7 slides in the compression groove 5, and a filter screen 8 is slidably connected to the inner cavity of the filter screen groove 4, and the filter screen 8 resists the resistance plate 7. The bottom of the outer wall of the filter screen 8 away from the resistance plate 7 is fixedly connected to a collecting frame 9, and the collecting frame 9 slides in the collecting groove 3, and one side of the filter screen 8 and the collecting frame 9 penetrates the filter box 2 and the box body 1 and is slidably connected, and one side outer wall of the box body 1 penetrates the box 1 and the filter box 2 and is fixedly connected with an air inlet pipe 10; A motor 11 is installed on one side of the top of the filter box 2. The bottom of the motor 11 passes through the filter box 2 and is rotatably connected to an output rod 12. An output box 13 is provided on the outer wall of the output rod 12 away from the motor 11. The end of the output rod 12 away from the motor 11 passes through the output box 13 and is rotatably connected to a bevel gear 14. One side of the output box 13 passes through and is rotatably connected to an output rod 2 15. One end of the output rod 2 15 passes through the output box 13 and is rotatably connected to a bevel gear 2 17, and the bevel gear 2 17 is meshed with the bevel gear 14. The end of the output rod 2 15 away from the bevel gear 2 17 is fixedly connected to an intake fan 16, and the intake fan 16 is installed in the inner cavity of the air inlet duct 10.

[0021] The above scheme is adopted: after completing the discharge activity, the motor 11 is turned on to make the output rod 12 drive the bevel gear 14 to rotate so that the bevel gear 14 is engaged with the bevel gear 2 17 to drive the output rod 2 15 to rotate, and the output rod 2 15 is used to rotate the intake fan 16 to draw the air that needs to be detected on the outer wall into the box body 1 through the air inlet pipe 10. When the motor 11 is turned on, the filter 8 is first inserted into the filter slot 4. When the filter 8 is inserted into the filter slot 4, it will contact the contact plate 7 to compress the spring 1 6. When the filter 8 is fully inserted into the filter slot 4, the elastic force of the spring 1 6 and the contact plate 7 will fix the filter 8, and at the same time, the filter 8 is sealed to prevent some gas from entering the box body 1 through the gap. When the filter 8 is inserted into the filter slot 4, the collection frame 9 will also be inserted into the collection tank 3. Then the dust attached to the gas drawn into the box body 1 by the air inlet pipe 10 is filtered through the filter 8, and then enters the inner cavity of the box body 1.

[0022] like Figures 1 to 10As shown, air guide plates 18 are fixedly connected to both sides between the inner cavity of the box body 1 and the collection tank 3, and air guide plates 19 are fixedly connected to the upper and lower parts of one side of the air guide plate 18 on one side, and the other end of the air guide plate 19 is connected to the inner cavity of the box body 1. A rotating rod 20 is rotatably connected to one side of the air guide plate 18 between the two air guide plates 19, and a fan blade 21 is fixedly connected to the middle of the outer wall of the rotating rod 20; One side of the rotating rod 1 20 passes through the air guide plate 18 and is rotatably connected to the rotating rod 2 22 . The end of the rotating rod 22 away from the rotating rod 1 20 is fixedly connected to the connecting plate 23 . The side of the connecting plate 23 close to the rotating rod 22 is fixedly connected to the guide plate 24 . A connecting plate 25 is fixedly connected to one side of the air guide plate 18. A sliding groove 26 is formed in the middle of the connecting plate 25. A sliding plate 27 is slidably connected to the interior of the sliding groove 26. One side of the sliding plate 27 passes through the connecting plate 25 and is slidably connected to a knocking rod 28. A buffer pad 29 is fixedly connected to the side of the knock rod 28 away from the slide plate 27, and the buffer pad 29 cooperates with the filter screen 8; A connecting block 30 is fixedly connected to one side of the top of the connecting plate 25, a connecting column 1 31 is fixedly connected to one side of the connecting block 30, and a spring 2 32 is fixedly connected to the outer wall of the connecting column 1 31; A second connecting post 33 is fixedly connected to one side of the slide plate 27 , and an outer wall of the second connecting post 33 is fixedly connected to the other end of the second spring 32 . The second connecting post 33 and the guide plate 24 are in contact with each other.

[0023] Adopting the above scheme: in the process of gas entering the box body 1 through the air inlet pipe 10, the gas will first be diverted to both sides of the gas box through the air guide plate 18, and at the same time, the gas will pass between the two air guide plates 19 through the setting of the air guide plate 2. When the gas passes between the two air guide plates 19, the flow direction of the gas will cause the fan blades 21 to rotate and the rotating rod 1 20 to rotate. The rotating rod 1 20 will drive the rotating rod 22 to rotate. At this time, the rotating rod 22 will drive the connecting plate 23 and the guide plate 24 to rotate. When the guide plate 24 rotates, it will conflict with the connecting column 2 33. At this time, the connecting column 2 33 will drive the slide plate 27, The knocking rod 28 and the buffer pad 29 slide in the slide groove 26, and at the same time, the spring 23 is stretched. When the guide plate 24 rotates and disengages from the interference with the connecting column 23, the slide plate 27, the knocking rod 28 and the knocking rod 28 will reset the slide plate 27 through the pulling force of the spring 23. At this time, the knocking rod 28 and the buffer pad 29 will hit the filter 8, knocking down the dust attached to the filter 8 after being filtered on the filter 8. At this time, the falling dust will fall into the collection frame 9 for collection. The knocking rod 28 and the buffer pad 29 hit the filter 8 to avoid clogging of the filter 8 caused by long-term use, which affects the detection effect. When the dust collected in the collection frame 9 is too much, the filter 8 and the collection frame 9 can be pulled out from the collection tank 3 and the filter tank 4 to clean the dust collected in the collection frame 9 uniformly; The provision of the buffer pad 29 prevents a large amount of noise from being generated during collision.

[0024] like Figures 1 to 10 As shown, a gas analyzer 34 is installed on the upper part of one side of the box body 1, and a detection head 35 is installed on the gas analyzer 34 which passes through one side of the box body 1; An exhaust fan 36 is installed on a side of the outer wall of the box body 1 away from the gas analyzer 34 , and the gas stored in the box body 1 can be discharged through the exhaust fan 36 .

[0025] Adopting the above solution: when work is required, first turn on the exhaust fan 36 to exhaust the gas in the box 1 to ensure the accuracy of subsequent gas detection data; The gas entering the box body 1 is detected through the detection head 35 , and the gas in the box body 1 can be analyzed and checked by the gas analyzer 34 .

[0026] The working principle and use process of the present invention: When work is required, first turn on the exhaust fan 36 to discharge the gas in the box 1 to ensure the accuracy of the subsequent gas detection data. After completing the discharge activity, turn on the motor 11 to make the output rod 12 drive the bevel gear 14 to rotate so that the bevel gear 14 and the bevel gear 2 17 are engaged to drive the output rod 2 15 to rotate, and the output rod 2 15 is used to rotate the air inlet fan 16 to draw the air that needs to be detected on the outer wall into the box 1 through the air inlet pipe 10. When turning on the motor 11, first insert the filter 8 into the filter slot 4. When the filter 8 is inserted into the filter slot 4, it will contact the contact plate 7 to compress the spring 16. When the filter 8 is inserted into the filter slot 4, it will contact the contact plate 7 to compress the spring 16. When the filter is fully inserted into the filter slot 4, the elastic force of the spring 1 6 and the interference of the contact plate 7 will fix the filter 8, and at the same time, the filter 8 will be sealed to prevent some gas from entering the box 1 through the gap. When the filter 8 is inserted into the filter slot 4, the collection frame 9 will also be inserted into the collection slot 3. Then, the dust accompanying the gas drawn into the box 1 by the air inlet pipe 10 will be filtered through the filter 8, and then enter the inner cavity of the box 1. Then, the gas entering the box 1 will be detected by the detection head 35, and the gas in the box 1 can be analyzed and viewed by the gas analyzer 34. In the process of gas entering the box body 1 through the air inlet pipe 10, the gas will first be diverted to both sides of the gas box through the air guide plate 18, and at the same time, the gas will pass between the two air guide plates 19 through the setting of the air guide plate 2. When the gas passes between the two air guide plates 19, the flow direction of the gas will cause the fan blades 21 to rotate and the rotating rod 1 20 to rotate. The rotating rod 1 20 will drive the rotating rod 22 to rotate. At this time, the rotating rod 22 will drive the connecting disk 23 and the guide plate 24 to rotate. When the guide plate 24 rotates, it will conflict with the connecting column 2 33. At this time, the connecting column 2 33 will drive the slide plate 27 and the knocking rod 28 and the buffer pad 29 slide in the slide groove 26, and at the same time stretch the spring 2 32. When the guide plate 24 rotates to disengage from the interference with the connecting column 2 33, the slide plate 27, the knocking rod 28 and the knocking rod 28 will reset the slide plate 27 through the pulling force of the spring 2 32. At this time, the knocking rod 28 and the buffer pad 29 will collide with the filter 8, and the dust attached to the filter 8 after being filtered on the filter 8 will be knocked down. At this time, the falling dust will fall into the collection frame 9 for collection. The knocking rod 28 and the buffer pad 29 hit the filter 8 to avoid clogging of the filter 8 caused by long-term use, which affects the detection effect.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A gas detection device for environmental detection, comprising a housing (1), characterized in that: A filter box (2) is installed at the bottom of the inner cavity of the box body (1), a collection tank (3) is provided on one side of the inner cavity of the filter box (2), a filter screen tank (4) is provided on the side of the inner cavity of the filter box (2) close to the collection tank (3), and compression tanks (5) are provided on the upper and lower sides of the filter screen tank (4), a spring (6) is fixedly connected to one side of the inner cavity of the compression tank (5), and a contact plate (7) is fixedly connected to the side of the spring (6) away from the compression tank (5), and the contact plate (7) is in the compression tank (5). Sliding, the inner cavity of the filter screen trough (4) is slidably connected with a filter screen (8), and the filter screen (8) is in contact with the contact plate (7), and the bottom of the outer wall of the filter screen (8) away from the contact plate (7) is fixedly connected with a collection frame (9), and the collection frame (9) slides in the collection trough (3), and one side of the filter screen (8) and the collection frame (9) penetrates the filter box (2) and the box body (1) and is slidably connected, and one side of the outer wall of the box body (1) penetrates the box body (1) and the filter box (2) and is fixedly connected with an air inlet pipe (10).

2. The gas detection device for environmental monitoring according to claim 1, characterized in that: A motor (11) is installed on one side of the top of the filter box (2), the bottom of the motor (11) passes through the filter box (2) and is rotatably connected to an output rod (12), an output box (13) is provided on the outer wall of the output rod (12) away from the motor (11), one end of the output rod (12) away from the motor (11) passes through the output box (13) and is rotatably connected to a bevel gear (14), one side of the output box (13) passes through and is rotatably connected to an output rod (15), one end of the output rod (15) passes through the output box (13) and is rotatably connected to a bevel gear (17), and the bevel gear (17) is meshed with the bevel gear (14), and the end of the output rod (15) away from the bevel gear (17) is fixedly connected to an intake fan (16), and the intake fan (16) is installed in the inner cavity of the air inlet pipe (10).

3. The gas detection device for environmental monitoring according to claim 1, characterized in that: Wind guide plates 1 (18) are fixedly connected to both sides between the inner cavity of the box body (1) and the collecting tank (3); wind guide plates 2 (19) are fixedly connected to the upper and lower parts of one side of the wind guide plates 1 (18); and the other end of the wind guide plates 2 (19) is connected to the inner cavity of the box body (1); one side of the wind guide plates 1 (18) is rotatably connected to a rotating rod 1 (20) between the two wind guide plates 2 (19); and a fan blade (21) is fixedly connected to the middle of the outer wall of the rotating rod 1 (20).

4. The gas detection device for environmental monitoring according to claim 3, characterized in that: One side of the rotating rod 1 (20) passes through the wind guide plate 1 (18) and is rotatably connected to the rotating rod 2 (22). The end of the rotating rod 2 (22) away from the rotating rod 1 (20) is fixedly connected to the connecting plate (23). The side of the connecting plate (23) close to the rotating rod 2 (22) is fixedly connected to the guide plate (24).

5. The gas detection device for environmental monitoring according to claim 3, characterized in that: One side of the wind deflector plate (18) is fixedly connected to a connecting plate (25), a middle portion of the connecting plate (25) is penetrated and provided with a sliding groove (26), the interior of the sliding groove (26) is slidably connected to a sliding plate (27), and one side of the sliding plate (27) penetrates the connecting plate (25) and is slidably connected to a knocking rod (28).

6. The gas detection device for environmental monitoring according to claim 5, characterized in that: A buffer pad (29) is fixedly connected to the side of the knocking rod (28) away from the slide plate (27), and the buffer pad (29) is matched with the filter screen (8).

7. The gas detection device for environmental monitoring according to claim 5, characterized in that: A connecting block (30) is fixedly connected to one side of the top of the connecting plate (25), a connecting column 1 (31) is fixedly connected to one side of the connecting block (30), and a spring 2 (32) is fixedly connected to the outer wall of the connecting column 1 (31).

8. The gas detection device for environmental monitoring according to claim 5, characterized in that: One side of the slide plate (27) is fixedly connected to a second connecting column (33), and the outer wall of the second connecting column (33) is fixedly connected to the other end of the second spring (32), and the second connecting column (33) and the guide plate (24) are in conflict with each other.

9. The gas detection device for environmental monitoring according to claim 1, characterized in that: A gas analyzer (34) is passed through and installed on an upper portion of one side of the box body (1), and a detection head (35) is installed on the gas analyzer (34) passing through one side of the box body (1).

10. The gas detection device for environmental monitoring according to claim 1, characterized in that: An exhaust fan (36) is installed on a side of the outer wall of the box (1) away from the gas analyzer (34), and the gas stored in the box (1) can be discharged through the exhaust fan (36).

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