Atmospheric pollutant on-line monitoring equipment based on intermediate infrared fundamental frequency

Abstract

The invention discloses an atmospheric pollutant on-line monitoring device based on intermediate infrared fundamental frequency, and relates to the technical field of atmospheric pollutants, the atmospheric pollutant on-line monitoring device comprises a base and a monitor body, the upper side of the base is fixedly connected with a fixed pipe, and the fixed pipe is internally provided with a gear motor; a speed reduction motor is arranged on the monitor body, a reciprocating structure is arranged on the speed reduction motor and comprises a reciprocating screw rod, the reciprocating screw rod drives the monitor body to move up and down, and a rotating structure is arranged on the outer side of the fixed pipe, so that harmful substances at a relatively high position and a relatively low position in the atmosphere can be monitored at the same time; the situation that the monitor cannot monitor harmful gas due to the fact that the harmful gas is too heavy is avoided, the rotating structure is arranged, the monitor body moves up and down and does circular motion on the fixed pipe at the same time, then the atmosphere around the fixed pipe can be monitored, and monitoring dead corners caused by visual angle deviation of the monitor body are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air pollutants, and specifically, it is an on-line monitoring device for air pollutants based on mid-infrared fundamental frequency. Background Art

[0002] With the acceleration of China's industrialization and urbanization processes, sudden air pollution incidents occur frequently, posing a severe threat to the ecological environment and public safety. Currently, the on-line monitoring technology based on the mid-infrared fundamental vibration absorption characteristics has become an important means for detecting air pollutants due to its high sensitivity and real-time performance. This technology captures the fundamental vibration spectra of molecules in the mid-infrared band and analyzes the types and concentrations of pollutants, and has been widely applied in fields such as industrial emission monitoring and environmental emergency response.

[0003] However, the existing fixedly installed mid-infrared monitoring devices face multi-dimensional environmental adaptability challenges in practical applications, which are specifically manifested as the following technical bottlenecks: 1. The monitoring height is fixed and cannot cover the vertical stratification of pollutants: Pollutants with different densities form a vertical concentration difference due to meteorological conditions, but the fixedly installed devices can only detect at a single height, resulting in missed detection of high-altitude or ground pollution; 2. External light source interference reduces the detection accuracy: When deployed at high altitudes, sunlight and artificial infrared light sources will cover the characteristic signals of pollutants. Especially in a strong light environment, the detection error of low-concentration pollutants increases significantly; 3. Outdoor dust occlusion causes signal attenuation: When the optical lens is long-term exposed to haze and dust environments, dust adsorption will scatter or absorb infrared light. Without effective protection, the light transmittance will drop sharply in a short period, resulting in the failure of monitoring.

[0004] Therefore, an on-line monitoring device for air pollutants based on mid-infrared fundamental frequency is provided to solve the problems raised in the above background art. Summary of the Invention

[0005] The purpose of the present invention is to provide an on-line monitoring device for air pollutants based on mid-infrared fundamental frequency to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: An on-line monitoring device for air pollutants based on mid-infrared fundamental frequency includes a base and a monitor body. A fixed tube is fixedly connected to the upper side of the base, and a reduction motor is installed inside the fixed tube; A reciprocating structure is arranged on the reduction motor. The reciprocating structure includes a reciprocating lead screw, and the reciprocating lead screw drives the monitor body to move up and down; A rotating structure is arranged on the outer side of the fixed pipe. The rotating structure includes a rotating gear, and the rotating gear drives the monitor body to move up and down and perform a circular motion at the same time; An installation block is arranged on the lower side of the monitor body, and a sunshade structure is arranged on the installation block. The sunshade structure can block the light source above the monitor body; A brush structure is arranged on one side of the monitor body, and the brush structure can brush the lens of the monitor body.

[0007] As a further scheme of the present invention: wherein, the output end of the reduction motor is fixedly connected to the reciprocating lead screw. A moving block is helically connected to the reciprocating lead screw. The moving block is slidably connected to the fixed pipe. One end of the moving block is fixedly connected to a fixed ring. A toothed ring is rotatably connected to the outer side of the fixed ring, and the outer side of the toothed ring is fixedly connected to the installation block.

[0008] As a further scheme of the present invention: wherein, the rotating gear is rotatably connected to the bottom side of the moving block. A threaded lead screw is helically connected to the rotating gear. The threaded lead screw is slidably connected to the base. The rotating gear is meshed with the toothed ring.

[0009] As a further scheme of the present invention: wherein, the sunshade structure includes a long toothed plate. The long toothed plate penetrates through the installation block. The bottom side of the long toothed plate is slidably connected to the base. A roller is rotatably connected to the inside of the installation block.

[0010] As a further scheme of the present invention: wherein, circular rollers are fixedly connected to both ends of the roller. Two groups of short toothed plates are slidably connected to the installation block. The short toothed plates are meshed with the circular rollers. A sunshade curtain is arranged above the monitor body. The sunshade curtain is fixedly connected to the installation block. Both ends of the sunshade curtain are fixedly connected to the short toothed plates.

[0011] As a further scheme of the present invention: wherein, a toothed block is arranged at the upper quarter of the long toothed plate. The toothed block is meshed with the toothed block on the roller.

[0012] As a further scheme of the present invention: wherein, the brush structure includes a moving groove. A spiral rod is rotatably connected to the inside of the moving groove. A brush rod is helically connected to the spiral rod. A sliding groove is arranged on the other side of the moving groove.

[0013] As a further scheme of the present invention: wherein, the sliding groove is communicated with the moving groove. A rotating rod is rotatably connected to the inside of the sliding groove. A transmission chain is wound between the rotating rod and the spiral rod. A connecting rod is fixedly connected to the upper side of the transmission chain. The connecting rod is fixedly connected to one end of the short toothed plate.

[0014] As a further solution of the present invention: wherein, sprockets are provided on the surface side of the rotating rod and one end of the screw rod, and the sprockets are engaged with a transmission chain.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing a reciprocating movement structure, the reciprocating movement structure can enable the monitor body to move up and down reciprocally on the fixed tube, so as to simultaneously monitor harmful substances at higher and lower positions in the atmosphere, avoiding the situation that the monitor cannot monitor due to the overweight of harmful gases.

[0016] By providing a rotating structure, the rotating structure enables the monitor body to perform a circular motion on the fixed tube while moving up and down, so as to monitor the atmosphere around the fixed tube and avoid the monitoring dead angle caused by the viewing angle deviation of the monitor body.

[0017] By providing a sunshade structure, when the monitor body is moved to a higher position, the sunshade structure can block the light source above the monitor body, avoiding the strong light above affecting the monitoring accuracy of the monitor body.

[0018] 4. By providing a scraping structure, the provided scraping structure can intermittently scrape the lens of the monitor body, avoiding the lens of the monitor body being contaminated with dust and preventing the problem that the dust blocks the lens and the infrared light path, resulting in the weakening of the signal intensity. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure in the present invention; Figure 2 It is a schematic diagram of the reciprocating lead screw structure in the present invention; Figure 3 It is a schematic diagram of the threaded lead screw structure in the present invention; Figure 4 It is a schematic diagram of the rotating gear structure in the present invention; Figure 5 It is a schematic diagram of the roller structure in the present invention; Figure 6 It is a schematic diagram of the short tooth plate structure in the present invention; Figure 7 It is a schematic cross-sectional view of the mounting block structure in the present invention; The corresponding relationship between the labels of each drawing in the figure and the component names is as follows: 1. Base; 101. Fixed tube; 2. Reduction motor; 201. Reciprocating lead screw; 202. Fixed ring; 203. Moving block; 204. Tooth ring; 3. Threaded lead screw; 301. Rotating gear; 302. Mounting block; 4. Short toothed plate; 401. Sunshade curtain; 402. Long toothed plate; 403. Roller; 404. Round roller; 5. Sliding groove; 502. Connecting rod; 503. Screw rod; 504. Moving groove; 505. Transmission chain; 506. Rotating rod; 507. Scrubbing rod; 6. Monitor body. Detailed implementation mode

[0020] Please refer to Figures 1 to 7 : An on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency, including a base 1 and a monitor body 6. A fixed tube 101 is fixedly connected to the upper side of the base 1, and a reduction motor 2 is installed inside the fixed tube 101; A reciprocating structure is arranged on the reduction motor 2. The reciprocating structure includes a reciprocating lead screw 201, and the reciprocating lead screw 201 drives the monitor body 6 to move up and down; Among them, by setting a reciprocating movement structure, the reciprocating movement structure can make the monitor body 6 reciprocate up and down on the fixed tube 101, and thus can simultaneously monitor harmful substances at higher and lower positions in the atmosphere, avoiding the situation that the monitor cannot monitor due to the excessive weight of harmful gases.

[0021] A rotating structure is arranged on the outside of the fixed tube 101. The rotating structure includes a rotating gear 301, and the rotating gear 301 drives the monitor body 6 to move up and down and make a circular motion at the same time; Among them, the setting of the rotating structure makes the monitor body 6 make a circular motion on the fixed tube 101 while moving up and down, and thus can monitor the atmosphere around the fixed tube 101, avoiding the monitoring dead angle caused by the visual angle deviation of the monitor body 6.

[0022] A mounting block 302 is arranged on the lower side of the monitor body 6, and a sunshade structure is arranged on the mounting block 302. The sunshade structure can block the light source on the upper part of the monitor body 6; Among them, the setting of the sunshade structure enables the sunshade structure to block the light source above the monitor body 6 when the monitor body 6 moves to a higher position, avoiding the strong light of the upper light source from affecting the monitoring accuracy of the monitor body 6.

[0023] A scrubbing structure is arranged on one side of the monitor body 6. The scrubbing structure can scrub the lens of the monitor body 6.

[0024] Among them, the set scrubbing structure can intermittently scrub the lens of the monitor body 6, avoiding the lens of the monitor body 6 from being contaminated with dust, preventing the dust from blocking the lens and blocking the infrared optical path, resulting in the problem of weakened signal intensity.

[0025] Preferably, the output end of the reduction motor 2 is fixedly connected to the reciprocating lead screw 201. A moving block 203 is helically connected to the reciprocating lead screw 201. The moving block 203 is slidably connected to the fixed pipe 101. One end of the moving block 203 is fixedly connected to a fixed ring 202. A toothed ring 204 is rotatably connected to the outside of the fixed ring 202. The outside of the toothed ring 204 is fixedly connected to the mounting block 302.

[0026] Specifically, the reduction motor 2 can drive the reciprocating lead screw 201 to rotate. While the reciprocating lead screw 201 rotates, it drives the mounting block 302 to reciprocate up and down on the fixed pipe 101, thereby driving the monitor body 6 to move up and down, enabling the monitor body 6 to monitor harmful substances at higher and lower positions in the atmosphere, and avoiding the situation where the monitor cannot monitor due to the excessive weight of harmful gases.

[0027] Preferably, the rotating gear 301 is rotatably connected to the bottom side of the moving block 203. A threaded lead screw 3 is helically connected to the rotating gear 301. The threaded lead screw 3 is slidably connected to the base 1. The rotating gear 301 meshes with the toothed ring 204.

[0028] Among them, when the moving block 203 moves downward, it drives the rotating gear 301 to move downward, causing the rotating gear 301 to move downward on the threaded lead screw 3. The bottom end of the threaded lead screw 3 is slidably connected to the base 1 through a slider (circular motion), and the threaded lead screw 3 is fixedly connected to the slider, so it cannot rotate itself. This setting causes the rotating gear 301 to rotate when it moves downward on the threaded lead screw 3. When the rotating gear 301 rotates, it drives the toothed ring 204 to rotate. When the toothed ring 204 rotates, it drives the mounting block 302 to move in a circular motion with the fixed pipe 101 as the center while moving downward, thereby causing the monitor body 6 itself to also rotate around the fixed pipe 101 as the center. This setting achieves the purpose of allowing the monitor body 6 to monitor the atmosphere around the fixed pipe 101 and avoiding monitoring dead angles caused by the visual angle deviation of the monitor body 6.

[0029] Preferably, the sunshade structure includes a long toothed plate 402. The long toothed plate 402 penetrates through the mounting block 302. The bottom side of the long toothed plate 402 is slidably connected to the base 1. A roller 403 is rotatably connected inside the mounting block 302. Two ends of the roller 403 are fixedly connected to round rollers 404. Two short toothed plates 4 are slidably connected to the mounting block 302. The short toothed plates 4 mesh with the round rollers 404. A sunshade curtain 401 is arranged above the monitor body 6. The sunshade curtain 401 is fixedly connected to the mounting block 302. Two ends of the sunshade curtain 401 are fixedly connected to the short toothed plates 4. A toothed block is arranged at the upper quarter of the long toothed plate 402. The toothed block meshes with the toothed block on the roller 403 Among them, when the monitor body 6 is moved to a higher position, it is easily affected by strong light sources (the light sources include but are not limited to the irradiation of the sun at a high place and the irradiation of fluorescent lamps on the indoor ceiling, etc.). Therefore, when the mounting block 302 moves to the upper quarter of the long toothed plate 402, the tooth blocks on the roller 403 on the mounting block 302 start to mesh with the tooth blocks on the long toothed plate 402, and then the roller 403 will start to rotate. As Figure 5 shown, when the mounting block 302 moves upward, the roller 403 will rotate counterclockwise. When the roller 403 rotates counterclockwise, it will push the short toothed plate 4 to move rightward through the tooth blocks on the round roller 404. When the short toothed plate 4 moves rightward, it will pull the sunshade curtain 401 to unfold, so as to be laid above the monitor body 6, and thus play a role in shading the monitor body 6 from strong light sources.

[0030] Specifically, on the contrary, when the mounting block 302 moves downward, the roller 403 will rotate clockwise. When the roller 403 rotates clockwise, it will push the short toothed plate 4 to move leftward through the tooth blocks on the round roller 404. When the short toothed plate 4 moves rightward, it will drive the sunshade curtain 401 to contract, so as to no longer block the light source on the monitor body 6.

[0031] Preferably, the scraping structure includes a moving groove 504. A screw rod 503 is rotatably connected inside the moving groove 504. A scraping rod 507 is screwed on the screw rod 503. On the other side of the moving groove 504, there is a sliding groove 5. The sliding groove 5 communicates with the moving groove 504. A rotating rod 506 is rotatably connected inside the sliding groove 5. A transmission chain 505 is wound between the rotating rod 506 and the screw rod 503. An connecting rod 502 is fixedly connected to the upper side of the transmission chain 505. The connecting rod 502 is fixedly connected to one end of the short toothed plate 4. Sprockets are arranged on the surface side of the rotating rod 506 and one end of the screw rod 503. The sprockets are meshed with the transmission chain 505.

[0032] Among them, as described above, when the short toothed plate 4 moves, it will drive the connecting rod 502 to move. When the connecting rod 502 moves, it will drive the transmission chain 505 inside the sliding groove 5 to move. When the transmission chain 505 moves, it will drive the sprockets on the rotating rod 506 and the screw rod 503 to rotate. When the sprocket on the screw rod 503 rotates, it will drive the scraping rod 507 to move inside the moving groove 504. When the scraping rod 507 moves, it will scrape the lens of the monitor body 6, and thus remove the dust on the monitor body 6.

[0033] Working principle: When the reduction motor 2 drives the reciprocating lead screw 201 to rotate, the reciprocating lead screw 201 drives the mounting block 302 to move up and down on the fixed tube 101 while rotating, thereby driving the monitor body 6 to move up and down, enabling the monitor body 6 to monitor harmful substances at higher and lower positions in the atmosphere, avoiding the situation where the monitor cannot monitor due to the excessive weight of harmful gases; When the moving block 203 moves downward, it drives the rotating gear 301 to move downward, causing the rotating gear 301 to move downward on the threaded screw 3. The bottom end of the threaded screw 3 is slidably connected to the base 1 through a slider (circular motion), and the threaded screw 3 is fixedly connected to the slider, so it cannot rotate itself. This setting causes the rotating gear 301 to rotate on its own when moving downward on the threaded screw 3. When the rotating gear 301 rotates on its own, it drives the toothed ring 204 to rotate. When the toothed ring 204 rotates, it drives the mounting block 302 to move in a circular motion with the fixed tube 101 as the center while moving downward, thereby causing the monitor body 6 itself to rotate around the fixed tube 101 as the center. This setting achieves the purpose of allowing the monitor body 6 to monitor the atmosphere around the fixed tube 101, avoiding monitoring dead angles caused by the viewing angle deviation of the monitor body 6; When the mounting block 302 moves to the upper quarter of the long toothed plate 402, the tooth blocks on the roller 403 on the mounting block 302 start to mesh with the tooth blocks on the long toothed plate 402, and then the roller 403 starts to rotate. As Figure 5 shown, when the mounting block 302 moves upward, the roller 403 rotates counterclockwise. When the roller 403 rotates counterclockwise, it pushes the short toothed plate 4 to move rightward through the tooth blocks on the round roller 404. When the short toothed plate 4 moves rightward, it pulls the sunshade curtain 401 to unfold, thus laying above the monitor body 6, and then playing a role in shading the monitor body 6 from strong light sources.

Claims

1. An on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency, characterized in that, It includes a base (1) and a monitor body (6). A fixed tube (101) is fixedly connected to the upper side of the base (1), and a reduction motor (2) is installed inside the fixed tube (101). A reciprocating structure is arranged on the reduction motor (2). The reciprocating structure includes a reciprocating lead screw (201), and the reciprocating lead screw (201) drives the monitor body (6) to move up and down. A rotating structure is arranged on the outer side of the fixed tube (101). The rotating structure includes a rotating gear (301), and the rotating gear (301) drives the monitor body (6) to move up and down and perform a circular motion at the same time. An installation block (302) is arranged on the lower side of the monitor body (6). A sunshade structure is arranged on the installation block (302), and the sunshade structure can block the light source above the monitor body (6). A brush structure is arranged on one side of the monitor body (6), and the brush structure can brush the lens of the monitor body (6).

2. The on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency according to claim 1, characterized in that, The output end of the reduction motor (2) is fixedly connected to the reciprocating lead screw (201). A moving block (203) is helically connected to the reciprocating lead screw (201). The moving block (203) is slidably connected to the fixed tube (101). One end of the moving block (203) is fixedly connected to a fixed ring (202). A toothed ring (204) is rotatably connected to the outer side of the fixed ring (202), and the outer side of the toothed ring (204) is fixedly connected to the installation block (302).

3. An on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency according to claim 2, characterized in that, The rotating gear (301) is rotatably connected to the bottom side of the moving block (203). A threaded lead screw (3) is helically connected to the rotating gear (301). The threaded lead screw (3) is slidably connected to the base (1), and the rotating gear (301) meshes with the toothed ring (204).

4. An on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency according to claim 3, characterized in that, The sunshade structure includes a long toothed plate (402). The long toothed plate (402) penetrates through the installation block (302). The bottom side of the long toothed plate (402) is slidably connected to the base (1). A roller (403) is rotatably connected to the inside of the installation block (302).

5. The on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency according to claim 4, characterized in that, Two round rollers (404) are fixedly connected to both ends of the roller (403). Two short toothed plates (4) are slidably connected to the installation block (302). The short toothed plates (4) mesh with the round rollers (404). A sunshade curtain (401) is arranged above the monitor body (6). The sunshade curtain (401) is fixedly connected to the installation block (302), and both ends of the sunshade curtain (401) are fixedly connected to the short toothed plates (4).

6. The on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency according to claim 5, wherein, A toothed block is arranged at the upper quarter of the long toothed plate (402), and the toothed block meshes with the toothed block on the roller (403).

7. An on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency according to claim 6, characterized in that, The brush structure includes a moving groove (504). A spiral rod (503) is rotatably connected to the inside of the moving groove (504). A brush rod (507) is helically connected to the spiral rod (503). A sliding groove (5) is arranged on the other side of the moving groove (504).

8. An on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency according to claim 7, characterized in that, The sliding groove (5) communicates with the moving groove (504). A rotating rod (506) is rotatably connected inside the sliding groove (5). A transmission chain (505) is wound between the rotating rod (506) and the screw rod (503). A connecting rod (502) is fixedly connected to the upper side of the transmission chain (505). One end of the connecting rod (502) is fixedly connected to the short toothed plate (4).

9. An on-line monitoring device for atmospheric pollutants based on mid-infrared fundamental frequency according to claim 8, characterized in that, Sprockets are provided on the surface side of the rotating rod (506) and one end of the screw rod (503). The sprockets are engaged with the transmission chain (505).

Images