Atmospheric environment monitoring sampling device

Abstract

The invention provides an atmospheric environment monitoring sampling device, and relates to the technical field of environment monitoring, the atmospheric environment monitoring sampling device comprises a box body, a sucking pump is arranged in the box body, the input end of the sucking pump is provided with a gas guide assembly, and the output end of the sucking pump is also provided with an electrochemical sensor and a light scattering sensor; the air guide assembly comprises an air suction pipe and a first electromagnetic valve. One end of the air suction pipe communicates with the input end of the air suction pump, and the other end of the air suction pipe is provided with the first electromagnetic valve. A gas storage assembly is arranged at the output end of the sucking pump and comprises a storage tank, a branch pipe and a second electromagnetic valve. The storage tank and the exhaust pipe can be freely communicated or blocked through the first electromagnetic valve and the second electromagnetic valve, the second electromagnetic valve is closed, then the exhaust pump is controlled to rotate reversely to exhaust gas in the exhaust pipe, gas sampled last time can be prevented from remaining in the exhaust pipe, the residual gas is prevented from being mixed with newly sampled gas next time, and the sampling efficiency is improved. And the gas sampling accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring, and in particular to an atmospheric environment monitoring sampling device. Background Art

[0002] Atmospheric environmental monitoring primarily involves sampling and analyzing the concentrations of various pollutants (such as sulfur dioxide, nitrogen oxides, particulate matter, and ozone) in the atmosphere. This allows for accurate assessment of pollutant levels and distribution, assessing whether atmospheric quality meets national and local standards and meets the needs of human health and ecosystems. Furthermore, by analyzing atmospheric samples collected from different regions and at different times, it is possible to identify potential sources of pollutants, such as industrial emissions, vehicle exhaust, coal combustion, and dust. This facilitates the development of targeted pollution control measures to reduce pollutant emissions at the source. Furthermore, the temporal and spatial variations of atmospheric pollution can be studied. Through long-term, continuous sampling and monitoring, it is possible to analyze how atmospheric pollutant concentrations vary over time (e.g., seasonally, daytime, and nighttime) and space (e.g., across cities and regions). This is crucial for understanding the formation mechanisms, transport processes, and influencing factors of atmospheric pollution, providing a scientific basis for atmospheric pollution forecasting and early warning. Understanding the types and concentrations of atmospheric pollutants allows for the assessment of their potential health hazards, such as respiratory and cardiovascular diseases. At the same time, it can also assess the impact of air pollution on the ecosystem, such as the impact on plant growth, soil quality, water quality, etc., to provide a basis for environmental protection and ecological restoration. When monitoring and sampling the atmospheric environment, the atmospheric environment monitoring sampling device is mainly used; For example, the prior art application number CN202420747094.8 discloses an atmospheric environment monitoring sampling device, comprising a support frame, an atmospheric monitoring box is provided on the top of the support frame, a sealed door is provided on the front side of the atmospheric monitoring box, a gas quality monitoring box and an air pump that are interconnected are provided in the atmospheric monitoring box, the air pump is provided with an air extraction pipe, an air distribution box is provided at the end of the air extraction pipe, a sampling pipe and a clean air pipe extending to the outside are provided on the top of the air distribution box, an air guide pipe extending to the outside is provided at the bottom of the atmospheric monitoring box, the air guide pipe is provided with an exhaust pipe and an air distribution main pipe, a fourth electric-controlled valve is provided on the exhaust pipe, a plurality of air distribution pipes are provided at the bottom of the air distribution main pipe, a storage tank is provided at the bottom of the air distribution pipe, a third electric-controlled valve is provided on the air distribution pipe, and an exhaust valve pipe is provided at the bottom of the storage tank; The above-mentioned prior art has been known through actual use. It is known that it mainly uses a vacuum pump to transport external air to the storage tank through the vacuum pipe to realize monitoring sampling. However, this will cause some of the gas collected last time to remain in the vacuum pipe after the sampling is completed. When the next sampling is carried out, the residual gas may mix with the newly collected gas, causing cross contamination and affecting the accuracy of the sampling results. For this reason, we have improved the above-mentioned prior art based on actual usage. Summary of the Invention

[0003] In order to solve the problem that after the above-mentioned sampling is completed, some of the gas collected last time may remain in the exhaust pipe. When the next sampling is carried out, the residual gas may mix with the newly collected gas, causing cross contamination and affecting the accuracy of the sampling results, the present invention aims to provide an atmospheric environment monitoring sampling device.

[0004] To achieve this technical purpose, the solution of the present invention is: an atmospheric environment monitoring sampling device, comprising a box body, an air pump is provided in the box body, an air guide component is provided at the input end of the air pump, and an electrochemical sensor and a light scattering sensor are also provided at the output end of the air pump; the air guide component comprises an air extraction pipe and a No. 1 solenoid valve, one end of the air extraction pipe is connected to the input end of the air extraction pump and a No. 1 solenoid valve is provided at the other end of the air extraction pipe; an air storage component is provided at the output end of the air extraction pump, the air storage component comprises a storage tank, a branch pipe and a No. 2 solenoid valve, the branch pipe is connected to the output end of the air extraction pump and a No. 2 solenoid valve is provided in the branch pipe, and a storage tank is provided at the lower end of the branch pipe.

[0005] Preferably, a bracket is welded to the upper end of the box and a solar panel is provided on the upper end of the bracket, and a No. 2 battery is fixed to the inner wall of the box via a connecting frame.

[0006] Preferably, a glass door panel is provided on the front side of the box body through a hinge, a partition is integrally provided in the box body, a No. 1 cavity is provided at the upper end of the partition board, a No. 2 cavity is provided at the lower end of the partition board, an exhaust pump, an exhaust pipe and a No. 2 battery are provided in the No. 2 cavity, and one end of the exhaust pipe extends to the periphery of the box body.

[0007] Preferably, a mounting bracket is fixed to the inner wall of the box and one end of the mounting bracket is fixed to the air pump, the input end of the air pump is fixedly connected to the air extraction pipe through a flange, and the output end of the air extraction pump extends to the second chamber.

[0008] Preferably, a large particle filter is fixed to one end of the exhaust pipe by bolts.

[0009] Preferably, a square tube is fixed between the left and right inner walls of the second chamber by bolts, the square tube is connected to the output end of the air pump, and the lower end of the square tube is fixed and connected to at least three branch pipes.

[0010] Preferably, the inner wall of each branch pipe is provided with an internal thread, and the outer periphery of the mouth of the storage tank is provided with an external thread engaged with the internal thread.

[0011] Preferably, a No. 1 battery is fixed on one side of the storage tank, and a No. 3 solenoid valve and a pressure sensor are provided at the mouth of the storage tank;

[0012] Beneficial effects: 1. This device is equipped with a No. 1 solenoid valve on the air extraction pipe in the gas guide assembly, and a No. 2 solenoid valve is also equipped on the branch pipe in the gas storage assembly, so that the storage tank and the air extraction pipe can be freely connected or blocked. After sampling, the No. 2 solenoid valve is closed and the air extraction pump is controlled to rotate in the opposite direction. When the air extraction pump rotates in the opposite direction, the gas in the air extraction pipe is discharged, which can avoid the gas sampled last time from remaining in the air extraction pipe and prevent the residual gas from mixing with the next new sampled gas, thereby improving the accuracy of gas sampling. 2. When the gas in the exhaust pipe is discharged, the exhausted gas will blow the large particle filter at one end of the exhaust pipe to remove the dust remaining on its surface, so that the large particle filter can be cleaned when the exhaust gas is discharged; 3. In addition, when the No. 3 solenoid valve is closed, the storage tank can be separated from the branch pipe by rotation, and the sample in the storage tank can be retained and analyzed separately to ensure reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A front schematic view of the present invention; Figure 3 A schematic diagram of the gas guide assembly of the present invention; Figure 4 For the present invention Figure 2 A in the middle is an enlarged schematic diagram; Figure 5 It is a top view schematic diagram of the present invention; Figure 6 Schematic diagram of the gas storage assembly of the present invention.

[0014] Among them: 1. Box body; 2. Glass door panel; 3. Cavity No. 1; 4. Cavity No. 2; 5. Solar panel; 6. Vacuum pump; 7. Air guide assembly; 71. Vacuum pipe; 72. Large particle filter; 73. Solenoid valve No. 1; 8. Gas storage assembly; 81. Storage tank; 82. Branch pipe; 83. Solenoid valve No. 2; 84. Solenoid valve No. 3; 85. Battery No. 1; 86. Pressure sensor; 9. Electrochemical sensor; 10. Light scattering sensor; 11. Square tube; 12. Bracket; 13. Mounting frame; 14. Battery No. 2; 15. Partition. DETAILED DESCRIPTION

[0015] The invention of this application is further described in detail below with reference to the accompanying drawings and specific embodiments. In order to clearly and completely describe the technical solution, the following embodiments are selected for illustration; other embodiments obtained based on the contents recorded in this application without creative work are all within the scope of protection of this invention.

[0016] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom", etc., or the like, are based on the terms or the like as shown in the accompanying drawings. They are only for the purpose of clearly describing the present embodiment, and do not indicate or imply that the device or element referred to must have a specific orientation. Therefore, they should not be understood as limiting the present application.

[0017] like Figures 1 to 6 As shown, an embodiment of the present invention provides an atmospheric environment monitoring sampling device, including a box body 1, an air pump 6 is provided in the box body 1 for extracting external air, an air guide component 7 is provided at the input end of the air pump 6, and an electrochemical sensor 9 and a light scattering sensor 10 are also provided at the output end of the air pump 6; the electrochemical sensor 9 generates current through the oxidation-reduction reaction of the measured gas on the electrode, and detects the gas concentration according to the current, such as the detection of harmful gases such as carbon monoxide and hydrogen sulfide; when the light scattering sensor 10 is in use, when the laser is irradiated on the particulate matter, scattered light is generated, and the intensity and angular distribution of the scattered light are detected to calculate the particulate matter. Concentration and particle size are commonly used to detect particulate matter such as PM10 and PM2.5 in the air; an Internet of Things communication system is set in the box 1, which can facilitate the transmission of monitored atmospheric data to the console; the air guide component 7 includes an air extraction pipe 71 and a No. 1 solenoid valve 73, one end of the air extraction pipe 71 is connected to the input end of the air extraction pump 6 and the No. 1 solenoid valve 73 is set at the other end of the air extraction pipe 71; the output end of the air extraction pump 6 is provided with an air storage component 8, and the air storage component 8 includes a storage tank 81, a branch pipe 82 and a No. 2 solenoid valve 83, the branch pipe 82 is connected to the output end of the air extraction pump 6 and the No. 2 solenoid valve 83 is set in the branch pipe 82, and the storage tank 81 is set at the lower end of the branch pipe 82; Types and ranges of gases detected by the electrochemical sensor 9 during use: Different electrochemical sensors 9 have selective responses to specific gases. They should be selected according to monitoring needs. For example, when monitoring sulfur dioxide, carbon monoxide, etc., select the corresponding sensor and ensure that its detection range can cover the concentration range of the target gas; Sensitivity and resolution: Sensors with high sensitivity can more accurately detect changes in low-concentration gases, while resolution determines the minimum concentration difference the sensor can distinguish. Sensors with appropriate sensitivity and resolution should be selected based on actual monitoring requirements to ensure accurate detection of changes in atmospheric pollutant concentrations. Response time and recovery time: Response time refers to the time it takes for the sensor to reach a stable output after contact with the target gas, while recovery time refers to the time it takes for the sensor to return to its initial state after being separated from the target gas. In order to obtain accurate monitoring data in a timely manner, a sensor with a short response and recovery time should be selected. Anti-interference ability: There may be a variety of interfering gases in the atmosphere that can affect the sensor's detection results. Therefore, it is important to select a sensor with strong anti-interference capabilities to minimize the interference of other gases on the target gas detection. Stability and lifespan: The stability of the sensor directly affects the reliability of the monitoring data, while the lifespan is related to the replacement cost of the sensor. Sensors with good stability and long lifespan should be selected to reduce maintenance costs and ensure monitoring continuity. In addition, the light scattering sensor 10 measures the particle size range: Light scattering sensors are mainly used to measure the concentration of particulate matter in the atmosphere. Different sensors have different measurement accuracy for particles of different particle sizes. Based on monitoring needs, select a sensor that can accurately measure particles within the target particle size range; Precision and accuracy: Precision reflects the repeatability and stability of the sensor's measurement results, while accuracy indicates how close the measurement results are to the true value. When selecting a sensor, you should consider both its precision and accuracy to ensure the reliability of the monitoring data. Sampling flow rate and sampling time: Sampling flow rate and sampling time will affect the sensor's collection efficiency and measurement results of particulate matter. The appropriate sampling flow rate and sampling time should be selected according to the actual monitoring environment and requirements to ensure measurement accuracy; Environmental adaptability: The performance of the light scattering sensor 10 may be affected by factors such as ambient temperature, humidity, and air pressure. When selecting a sensor, you should choose one with good environmental adaptability and the ability to work stably under different environmental conditions. Data output and interface: The sensor's data output method and interface type should be compatible with other devices in the monitoring system to facilitate data transmission and processing. Select sensors with appropriate data output and interface types based on the requirements of the monitoring system. refer to Figure 1 and Figure 2 A bracket 12 is welded to the upper end of the box body 1, and a solar panel 5 is provided on the upper end of the bracket 12. A No. 2 battery 14 is fixed to the inner wall of the box body 1 through a connecting frame. A glass door panel 2 is provided on the front side of the box body 1 through a hinge. A partition 15 is integrally provided in the box body 1. A No. 1 cavity 3 is provided at the upper end of the partition 15, and a No. 2 cavity 4 is provided at the lower end of the partition 15. An air pump 6, an air extraction pipe 71 and a No. 2 battery 14 are provided in the No. 2 cavity 4, and one end of the air extraction pipe 71 extends to the periphery of the box body 1. A mounting bracket 13 is fixed to the inner wall of the box body 1, and one end of the mounting bracket 13 is fixed to the air extraction pump 6. The input end of the air extraction pump 6 is fixedly connected to the air extraction pipe 71 through a flange, and the output end of the air extraction pump 6 extends to the No. 2 cavity 4.

[0018] refer to Figure 3, a large particle filter 72 is fixed to one end of the exhaust pipe 71 by bolts; the large particle filter 72 is usually a primary filter. This filter is generally made of nylon, and has the characteristics of large ventilation volume, low resistance, high temperature resistance, moisture resistance, acid and alkali resistance, and can be repeatedly cleaned and used. It is highly economical and has a long service life. Its appearance is mostly a single-layer or multi-layer structure, with a large mesh and an aperture of about 1-3 mm. It is mainly used to filter large particles of dust, hair and other impurities in the atmosphere, which can effectively protect the subsequent exhaust pump 6 and extend its service life; it is used to reduce the content of large particles in the collected air and improve the quality of the collected gas. During long-term use, dust will remain on the surface of the large particle filter 72; when the gas in the exhaust pipe 71 is discharged, the discharged gas will blow the large particle filter 72 at one end of the exhaust pipe 71 to remove the dust remaining on its surface, so that the large particle filter 72 can be automatically cleaned when the exhaust gas is discharged.

[0019] refer to Figure 2 and Figure 6 A square tube 11 is fixed between the left and right inner walls of the No. 2 chamber 4 by bolts. The square tube 11 is connected to the output end of the vacuum pump 6. The lower end of the square tube 11 is fixed and connected to at least three branch pipes 82. The inner wall of each branch pipe 82 is provided with an internal thread, and the outer periphery of the mouth of the storage tank 81 is provided with an external thread that engages with the internal thread. A No. 1 battery 85 is fixed on one side of the storage tank 81, and a No. 3 solenoid valve 84 and a pressure sensor 86 are provided at the mouth of the storage tank 81. In addition, when the No. 3 solenoid valve 84 is closed, the storage tank 81 can be separated from the branch pipe 82 by rotation, and the sample retention analysis in the storage tank 81 can be separately carried out to ensure reliability; the No. 1 battery 85 is used to separately power the No. 3 solenoid valve 84 and the pressure sensor 86; it can prevent gas from overflowing after the storage tank 81 is disassembled; the No. 1 battery 85 and the No. 2 battery 14 are both powered by the solar panel 5; Working principle: When using this device, first open the No. 1 solenoid valve 73 in the gas guide component 7, and the external gas will enter the exhaust pipe 71, and the gas will be monitored by the electrochemical sensor 9 and the light scattering sensor 10; When sampling is required, the second solenoid valve 83 and the third solenoid valve 84 in the gas storage assembly 8 can be opened to connect the storage tank 81 with the air extraction pipe 71. After the air extraction pump 6 is started, the external air will be sucked into the air extraction pipe 71. At the same time, the extracted gas will pass through the square tube 11 and the branch pipe 82 into the storage tank 81 for storage and sampling. After the sampling is completed, the second solenoid valve 83 and the third solenoid valve 84 are closed, and the air pump 6 is controlled to rotate in the reverse direction. When the air pump 6 rotates in the reverse direction, the gas in the air extraction pipe 71 is discharged, which can prevent the air sampled last from remaining in the air extraction pipe 71 and mixing with the next new sampled gas, thereby improving the accuracy of gas sampling; When the gas in the exhaust pipe 71 is discharged, the discharged gas will blow the large particle filter 72 at one end of the exhaust pipe 71 to remove the dust remaining on the surface, so that the large particle filter 72 can be cleaned when the exhaust gas is discharged; In addition, when the No. 3 solenoid valve 84 is closed, the storage tank 81 can be separated from the branch pipe 82 by rotation, and the sample in the storage tank 81 can be retained and analyzed separately to ensure reliability.

[0020] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent replacements, and improvements made to the above embodiments based on the technical essence of the present invention shall be included in the scope of protection of the technical solution of the present invention.

Claims

1. An atmospheric environment monitoring sampling device, comprising a box (1), wherein an air pump (6) is provided in the box (1), characterized in that: The input end of the air pump (6) is provided with an air guide component (7), and the output end of the air pump (6) is also provided with an electrochemical sensor (9) and a light scattering sensor (10); The air guide assembly (7) comprises an air extraction pipe (71) and a first electromagnetic valve (73), one end of the air extraction pipe (71) is connected to the input end of the air extraction pump (6) and the other end of the air extraction pipe (71) is provided with the first electromagnetic valve (73); The output end of the air pump (6) is provided with an air storage assembly (8), and the air storage assembly (8) includes a storage tank (81), a branch pipe (82) and a second electromagnetic valve (83). The branch pipe (82) is connected to the output end of the air pump (6) and the second electromagnetic valve (83) is provided in the branch pipe (82). The storage tank (81) is provided at the lower end of the branch pipe (82).

2. The atmospheric environment monitoring sampling device according to claim 1, characterized in that: A bracket (12) is welded to the upper end of the box (1), and a solar panel (5) is provided on the upper end of the bracket (12). A No. 2 storage battery (14) is fixed to the inner wall of the box (1) via a connecting frame.

3. The atmospheric environment monitoring sampling device according to claim 2, characterized in that: A glass door panel (2) is provided on the front side of the box body (1) via a hinge. A partition (15) is integrally provided in the box body (1). A No. 1 cavity (3) is provided at the upper end of the partition (15), and a No. 2 cavity (4) is provided at the lower end of the partition (15). An air pump (6), an air extraction pipe (71), and a No. 2 battery (14) are provided in the No. 2 cavity (4), and one end of the air extraction pipe (71) extends to the periphery of the box body (1).

4. The atmospheric environment monitoring sampling device according to claim 1, characterized in that: A mounting bracket (13) is fixed to the inner wall of the box body (1), and one end of the mounting bracket (13) is fixed to the air pump (6). The input end of the air pump (6) is fixedly connected to the air extraction pipe (71) via a flange, and the output end of the air extraction pump (6) extends to the second chamber (4).

5. The atmospheric environment monitoring sampling device according to claim 4, characterized in that: One end of the air extraction pipe (71) is fixed with a large particle filter (72) via bolts.

6. The atmospheric environment monitoring sampling device according to claim 3, characterized in that: A square tube (11) is fixed between the left and right inner walls of the second chamber (4) by bolts. The square tube (11) is connected to the output end of the air pump (6). The lower end of the square tube (11) is fixed and connected to at least three branch pipes (82).

7. The atmospheric environment monitoring sampling device according to claim 6, characterized in that: The inner wall of each branch pipe (82) is provided with an internal thread, and the outer periphery of the mouth of the storage tank (81) is provided with an external thread that engages with the internal thread.

8. The atmospheric environment monitoring sampling device according to claim 7, characterized in that: A No. 1 battery (85) is fixed to one side of the storage tank (81), and a No. 3 solenoid valve (84) and a pressure sensor (86) are provided at the mouth of the storage tank (81).

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