An industrial exhaust gas monitoring device
By designing an L-shaped pipe and a rotating structure inside the housing to adjust the height and angle of the air inlet, and combining it with a filter plate and valves, the problem of traditional devices being unable to monitor density-stratified exhaust gas in real time was solved, achieving accurate monitoring of exhaust gas at different heights and reliable data discharge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU HUANXIN ENVIRONMENTAL PROTECTION ENGINEERING CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-26
Smart Images

Figure CN224416829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste gas monitoring technology, specifically to an industrial waste gas monitoring device. Background Technology
[0002] Industrial waste gas mainly originates from waste gas generated during industrial production processes. In my country, the main industrial waste gases include fuel combustion waste gas and production process waste gas. The focus of my country's waste gas treatment is: fuel combustion, mainly coal combustion waste gas, production process waste gas, and vehicle exhaust. Fuel combustion waste gas is the combustion of fossil fuels as a primary energy source. The combustion of fossil fuels, especially incomplete combustion, will lead to the generation of soot, sulfur oxides, nitrogen oxides, and carbon oxides, causing air pollution problems. The air pollution problems caused by coal combustion are the most serious.
[0003] In existing technologies, industrial waste gas compositions are complex and varied, typically containing a variety of pollutants such as sulfur oxides, nitrogen oxides, volatile organic compounds, particulate matter, heavy metal vapors, and various special compounds derived from different processes. These different components exhibit significant differences in physical properties. A key aspect is the relationship between their gas density and the average density of air. Gas components with a density less than that of air tend to rise and diffuse into the upper atmosphere after emission, while gas components with a density greater than that of air exhibit sinking characteristics and are more likely to accumulate near the ground or in lower spatial areas. This dynamic stratification phenomenon caused by density differences makes it impossible for traditional industrial waste gas monitoring devices to track and capture the dynamic spatial distribution of pollutants due to density stratification in real time. Ultimately, this leads to deviations in the judgment of total pollution source emissions, environmental impact assessments, and treatment effectiveness. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an industrial waste gas monitoring device.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] An industrial waste gas monitoring device includes a housing. Two hinges are fixedly installed on one side of the housing, and a door is provided on one side of the housing. The door is connected to the housing via the hinges. Several support columns are provided at the bottom of the housing. A monitoring component is provided inside the housing. The monitoring component includes a gas sensor, which is fixedly installed inside the housing. A connection hole is provided on one side of the housing. A bearing is fixedly installed on the inner circular wall of the connection hole. An L-shaped tube is fixedly sleeved on the inner circular wall of the bearing. A rotating ring is fixedly installed on the outer circular wall of the L-shaped tube. A fixed column is movably sleeved inside the rotating ring. A fixed ring is fixedly installed on the side of the housing near the L-shaped tube. The fixed ring is movably sleeved with the L-shaped tube. Several fixing holes are provided on one side of the fixed ring, and the fixing column is movably engaged with the fixing holes.
[0007] To facilitate the discharge of industrial waste gas from the chamber, as an industrial waste gas monitoring device of this utility model, preferably, an exhaust hole is provided on the inner bottom surface of the chamber, and a sliding assembly is provided on the inner bottom surface of the chamber. The sliding assembly includes: two slide rails, both of which are fixedly installed on the inner bottom surface of the chamber, and sliders are movably sleeved inside the slide rails. Cover plates are fixedly installed on the top surfaces of the two sliders, and handles are fixedly installed on the bottom surfaces of the cover plates.
[0008] To prevent particulate matter in the exhaust gas from interfering with the gas sensor's monitoring and affecting its monitoring effect, as an industrial exhaust gas monitoring device of this utility model, preferably, a filter plate is provided inside the housing, the top surface of the filter plate has several air vents, and U-shaped strips are movably sleeved on both sides of the filter plate, with two U-shaped strips respectively fixedly installed on the inside sides of the housing.
[0009] To prevent external exhaust gas from continuing to enter the housing through the L-shaped pipe and thus avoid affecting the data of the gas sensor monitoring the exhaust gas in the next operation, as an industrial exhaust gas monitoring device of this utility model, preferably, a valve is fixedly installed on the top surface of the L-shaped pipe, and a corrugated pipe is fixedly installed on the top surface of the valve.
[0010] In order to enable industrial waste gas at different heights from the outside to be quickly drawn into the interior of the housing through the corrugated pipe, as an industrial waste gas monitoring device of this utility model, preferably, a fan is fixedly installed inside the L-shaped pipe near the end of the housing.
[0011] To improve the sealing performance of the cover and better isolate the air at the bottom of the chamber, as an industrial waste gas monitoring device of this utility model, preferably, two sealing strips are fixedly installed on the inner bottom surface of the chamber.
[0012] In summary, the present invention has the following main advantages:
[0013] 1. Through the coordinated use of the housing, fixing ring, fixing hole, fixing column, rotating ring and L-shaped tube, the circumferential movement of the L-shaped tube can make the air inlet of the L-shaped tube correspond to different spatial heights. By adjusting the angle of the L-shaped tube multiple times, industrial waste gas at different heights outside can enter the interior of the housing, so as to monitor industrial waste gas floating at different heights in the environment.
[0014] 2. Through the coordinated use of the box body, cover plate, sealing strip, exhaust port, slide rail, slider and handle, when the monitoring is finished, push the handle to the right, the handle will drive the cover plate to the right, and when the slider slides to the side of the slide rail away from the gas sensor, the exhaust port will be exposed, so as to facilitate the discharge of industrial waste gas after the monitoring is completed in the box.
[0015] 3. Through the combined use of the housing, U-shaped strips, and filter plates, particulate matter in the exhaust gas can be filtered out, preventing particulate matter in the exhaust gas from interfering with the gas sensor's monitoring and affecting the monitoring effect of the gas sensor. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the connection hole structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the exhaust port structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the fixing ring structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the fan structure of this utility model;
[0021] Figure 6 This is a schematic diagram of the handle structure of this utility model;
[0022] Figure 7 This is a schematic diagram of the filter plate structure of this utility model.
[0023] Reference numerals: 1. Box body; 2. Box door; 3. Support column; 4. Gas sensor; 5. U-shaped strip; 6. Filter plate; 7. Bearing; 8. Fixing ring; 9. Fixing hole; 10. Fixing column; 11. Rotary ring; 12. L-shaped tube; 13. Valve; 14. Bellows; 15. Cover plate; 16. Connection hole; 17. Fan; 18. Sealing strip; 19. Exhaust port; 20. Slide rail; 21. Slider; 22. Handle. Detailed Implementation
[0024] 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.
[0025] Example: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 An industrial waste gas monitoring device includes a housing 1. Two hinges are fixedly installed on one side of the housing 1, and a door 2 is provided on one side of the housing 1. The door 2 is connected to the housing 1 via the hinges. Several support columns 3 are fixedly installed at the bottom of the housing 1. A monitoring component, including a gas sensor 4, is provided on one side of the interior of the housing 1. The gas sensor 4 is fixedly installed on one side of the interior of the housing 1. A connection hole 16 is provided on one side of the housing 1. A bearing 7 is fixedly installed on the inner circular wall of the connection hole 16, and the inner circular wall of the inner ring of the bearing 7 is fixedly sleeved. An L-shaped tube 12 is connected to the housing 1. A rotating ring 11 is fixedly installed on the outer circular wall of the L-shaped tube 12. A fixed post 10 is movably sleeved inside the rotating ring 11. A fixed ring 8 is fixedly installed on the side of the housing 1 near the L-shaped tube 12. The fixed ring 8 is movably sleeved with the L-shaped tube 12. Several fixed holes 9 are opened on one side of the fixed ring 8. The fixed post 10 is movably snapped into the fixed holes 9. A valve 13 is fixedly installed on the top surface of the L-shaped tube 12. A bellows 14 is fixedly installed on the top surface of the valve 13. A fan 17 is fixedly installed inside the L-shaped tube 12 near the end of the housing 1.
[0026] Industrial waste gas typically consists of different components. Waste gases with a density less than air, such as carbon monoxide and methane, diffuse into the upper atmosphere after emission, while waste gases with a density greater than air, such as sulfur oxides and nitrogen oxides, tend to accumulate near the ground or in lower spatial areas. When operators need to monitor waste gas at different heights, they rotate the rotating ring 11 in a circular motion. The rotating ring 11 drives the L-shaped tube 12 to rotate, thus allowing the L-shaped tube 12 to rotate in a circular motion. This facilitates the adjustment of the height of the air inlet of the L-shaped tube 12. Once the height of the air inlet of the L-shaped tube 12 is adjusted to the height required for monitoring the industrial waste gas, the fixing column 10 is inserted through the rotating ring 11 and secured to the fixed position. Inside the fixed hole 9, the fixed ring 8 and the rotating ring 11 are restricted, which facilitates the restriction of the angle of the air inlet of the L-shaped tube 12 after adjustment. By adjusting the angle of the L-shaped tube 12 multiple times, industrial waste gas at different heights in the environment can enter the interior of the housing 1 and be monitored by the gas sensor 4. This allows for the monitoring of industrial waste gas floating at different heights in the environment. When the waste gas monitoring is completed and the staff needs to discharge the waste gas inside the housing 1 through the exhaust hole 19, the valve 13 is closed to prevent external waste gas from continuing to enter the interior of the housing 1 through the L-shaped tube 12, thus avoiding affecting the data of the gas sensor 4 monitoring the waste gas next time.
[0027] refer to Figure 1 , Figure 3 and Figure 6 The bottom surface of the box 1 is provided with an exhaust hole 19. The bottom surface of the box 1 is provided with a sliding assembly, which includes two slide rails 20. Both slide rails 20 are fixedly installed on the bottom surface of the box 1. A slider 21 is movably sleeved inside the slide rail 20. A cover plate 15 is fixedly installed on the top surface of the two sliders 21. A handle 22 is fixedly installed on the bottom surface of the cover plate 15. Two sealing strips 18 are fixedly installed on the bottom surface of the box 1.
[0028] When monitoring industrial waste gas, the operator first pushes the handle 22 to the left via the slide rail 20. The handle 22 moves the cover plate 15 to the left. Since the slider 21 is restricted by the inside of the slide rail 20, the cover plate 15 slides stably at the top of the slide rail 20. When the slider 21 slides to the side of the slide rail 20 close to the gas sensor 4, the exhaust port 19 is completely covered by the cover plate 15, isolating the air in the chamber 1 from the bottom. When the monitoring is finished, the operator pushes the handle 22 to the right. The handle 22 moves the cover plate 15 to the right. When the slider 21 slides to the side of the slide rail 20 away from the gas sensor 4, the exhaust port 19 is exposed, allowing the industrial waste gas inside the chamber 1 to be discharged. The sealing strip 18 improves the sealing performance of the cover plate 15, better isolating the air at the bottom of the chamber 1.
[0029] refer to Figure 1 and Figure 7The interior of the housing 1 is equipped with a filter plate 6. The top surface of the filter plate 6 has several ventilation holes. U-shaped strips 5 are movably sleeved on both sides of the filter plate 6. The two U-shaped strips 5 are fixedly installed on the inside sides of the housing 1.
[0030] Through the filter plate 6, the industrial waste gas first enters the interior of the housing 1 through the L-shaped pipe 12, and then passes through the vent hole to contact the gas sensor 4. This can filter out particulate matter in the waste gas and prevent particulate matter in the waste gas from interfering with the monitoring of the gas sensor 4 and affecting the monitoring effect of the gas sensor 4.
[0031] Working principle: Please refer to Figures 1-7 As shown, industrial waste gas is usually composed of different components. Waste gases with a density less than air, such as carbon monoxide and methane, diffuse into the upper atmosphere after emission, while waste gases with a density greater than air, such as sulfur oxides and nitrogen oxides, tend to accumulate near the ground or in lower spatial areas. When the operator needs to monitor waste gas at different heights, the rotating ring 11 is rotated in a circular motion. The rotating ring 11 drives the L-shaped tube 12 to rotate, which in turn allows the L-shaped tube 12 to rotate in a circular motion, thus facilitating the adjustment of the height of the air inlet of the L-shaped tube 12. After the height of the air inlet of the L-shaped tube 12 is adjusted to the height at which the industrial waste gas needs to be monitored, the fixing column 10 is inserted into the fixing hole 9 through the rotating ring 11 to restrict the fixing ring 8 and the rotating ring 11, thus facilitating the restriction of the angle of the air inlet of the L-shaped tube 12 after adjustment. By adjusting the angle of the L-shaped tube 12 multiple times, industrial waste gas at different heights in the environment can enter the interior of the housing 1 and be monitored by the gas sensor 4, so as to monitor the industrial waste gas floating at different heights in the environment.
[0032] When monitoring industrial waste gas using the slide rail 20, the operator first pushes the handle 22 to the left. The handle 22 moves the cover plate 15 to the left. Because the slider 21 is restricted by the inside of the slide rail 20, the cover plate 15 slides stably on the top of the slide rail 20. When the slider 21 slides to the side of the slide rail 20 close to the gas sensor 4, the exhaust port 19 is completely covered by the cover plate 15, isolating the air in the box 1 from the bottom. When the monitoring ends, the operator pushes the handle 22 to the right. The handle 22 moves the cover plate 15 to the right. When the slider 21 slides to the side of the slide rail 20 away from the gas sensor 4, the exhaust port 19 is exposed, allowing the industrial waste gas inside the box 1 to be discharged.
[0033] Through the filter plate 6, the industrial waste gas first enters the interior of the housing 1 through the L-shaped pipe 12, and then passes through the vent hole to contact the gas sensor 4. This can filter out particulate matter in the waste gas and prevent particulate matter in the waste gas from interfering with the monitoring of the gas sensor 4 and affecting the monitoring effect of the gas sensor 4.
[0034] By using valve 13, when the exhaust gas monitoring is completed and the staff needs to discharge the exhaust gas inside the housing 1 through the exhaust port 19, closing valve 13 can prevent external exhaust gas from continuing to enter the housing 1 through the L-shaped pipe 12, thus avoiding affecting the data of the next exhaust gas monitoring by the gas sensor 4.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An industrial exhaust gas monitoring device, characterized by, include: Box body (1), two hinges are fixedly installed on one side of the box body (1), a box door (2) is provided on one side of the box body (1), the box door (2) is connected to the box body (1) through the hinge, and several support columns (3) are fixedly installed at the bottom of the box body (1); A monitoring component is provided on one side of the interior of the housing (1). The monitoring component includes a gas sensor (4). The gas sensor (4) is fixedly installed on one side of the interior of the housing (1). A connection hole (16) is provided on one side of the housing (1). A bearing (7) is fixedly installed on the inner circular wall of the connection hole (16). An L-shaped tube (12) is fixedly sleeved on the inner circular wall of the inner ring of the bearing (7). A rotating ring (11) is fixedly installed on the outer circular wall of the L-shaped tube (12). A fixing post (10) is movably sleeved inside the rotating ring (11). A fixing ring (8) is fixedly installed on the side of the housing (1) near the L-shaped tube (12). The fixing ring (8) is movably sleeved with the L-shaped tube (12). Several fixing holes (9) are provided on one side of the fixing ring (8). The fixing post (10) is movably engaged with the fixing holes (9).
2. The industrial exhaust gas monitoring device of claim 1, wherein: The bottom surface of the box (1) is provided with an exhaust hole (19), and the bottom surface of the box (1) is provided with a sliding component; The sliding assembly includes two slide rails (20), both of which are fixedly installed on the inner bottom surface of the housing (1). A slider (21) is movably sleeved inside the slide rail (20). A cover plate (15) is fixedly installed on the top surface of the two sliders (21), and a handle (22) is fixedly installed on the bottom surface of the cover plate (15).
3. The industrial exhaust monitoring device of claim 1, wherein, The box (1) is equipped with a filter plate (6) inside. The top surface of the filter plate (6) has several ventilation holes. U-shaped strips (5) are movably sleeved on both sides of the filter plate (6). The two U-shaped strips (5) are fixedly installed on the inside sides of the box (1).
4. The industrial exhaust monitoring device of claim 1, wherein, A valve (13) is fixedly installed on the top surface of the L-shaped pipe (12), and a bellows pipe (14) is fixedly installed on the top surface of the valve (13).
5. An industrial waste gas monitoring device according to claim 1, characterized in that, A fan (17) is fixedly installed inside the L-shaped tube (12) near one end of the housing (1).
6. An industrial waste gas monitoring device according to claim 2, characterized in that, Two sealing strips (18) are fixedly installed on the inner bottom surface of the box (1).