Novel constant-temperature automatic continuous ambient air sampler

Abstract

The utility model provides a novel constant-temperature automatic continuous ambient air sampler which comprises a sampler main body, a detection cavity arranged on the sampler main body, a constant-temperature assembly arranged in the detection cavity, an air inlet assembly arranged at one end of the sampler main body and an air outlet assembly arranged at the other end of the sampler main body. A gas sample enters the detection cavity through the gas inlet assembly to be detected and analyzed, and is discharged through the gas outlet assembly after being detected and analyzed, the constant temperature assembly is arranged in the detection cavity, and when the environment temperature is too low, the constant temperature assembly can heat the detection cavity, so that the temperature of the gas sample is in a temperature interval suitable for detection; the influence of the environment temperature on the accuracy of a detection analysis result is reduced, the accuracy of air quality evaluation is improved, and the device has the advantages of simple structure, high automation degree, simple operation mode and convenience in popularization and implementation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air quality detection, and particularly relates to a novel constant-temperature automatic continuous environmental air sampler. BACKGROUND

[0002] In the prior art, with the improvement of people's living quality and the improvement of environmental protection and health awareness, the indoor air quality is paid more and more attention, and air sampling and detection technology also develops rapidly. At present, air samplers are widely used in environmental monitoring, health and epidemic prevention, scientific research and teaching, indoor decoration, industrial and mining enterprises and other fields, for collecting harmful gas samples, evaluating air quality and conducting environmental impact assessment.

[0003] In the prior art, the air sampler comprises a sampling module, a detection module and an information transmission module. The sampling module directly samples the gas in the environment, and then the detection module detects the gas parameters, and then discharges from the air sampler. In the actual implementation process, with the change of air temperature, the volatility of volatile substances in the air will change. When the temperature is too low in winter, the volatility of volatile substances in the air decreases. When the air enters the air sampler, the detection module cannot accurately detect the volatile substances in the air, which significantly reduces the detection accuracy, and thus makes an incorrect evaluation of the air quality. Therefore, it is urgent to improve the air sampler. CONTENT OF THE INVENTION

[0004] The application is proposed to solve the technical problem in the prior art that the air sampler is affected by the environmental temperature in the actual use process. When the temperature is too low in winter, the volatility of volatile substances in the air decreases. After the air enters the air sampler, the detection module cannot accurately detect the volatile substances in the air, which significantly reduces the detection accuracy, and thus makes an incorrect evaluation of the air quality. The application provides a novel constant-temperature automatic continuous environmental air sampler.

[0005] The application adopts the following scheme. A novel constant-temperature automatic continuous environmental air sampler comprises a sampler main body, a detection cavity arranged on the sampler main body, a constant-temperature assembly arranged in the detection cavity, an air inlet assembly arranged on one end of the sampler main body and communicated with the detection cavity, and an air outlet assembly arranged on the other end of the sampler main body and communicated with the detection cavity. The air sample enters the detection cavity through the air inlet assembly and is discharged through the air outlet assembly. The constant-temperature assembly is used to stabilize the temperature in the detection cavity to a preset standard interval value.

[0006] In one of the embodiments, the constant temperature assembly comprises a temperature sensor arranged in the detection cavity, and a heating wire connected with the temperature sensor, the temperature sensor is used to sense the temperature in the detection cavity, and the heating wire is used to heat the detection cavity when the temperature sensed by the temperature sensor is lower than the preset standard interval value.

[0007] In one of the embodiments, the detection assembly arranged in the detection cavity is further included, and the detection assembly is used to detect the component and physical property parameter of the gas sample when the gas sample enters the detection cavity.

[0008] In one of the embodiments, the detection assembly comprises a component detection module arranged in the detection cavity, and the component detection module is any one or a combination of more than one of a gas chromatography mass spectrometry module, an ion chromatography module, a high performance liquid chromatography module, a scanning electron microscope module, and an energy spectrum module.

[0009] In one of the embodiments, the detection assembly further comprises a physical property detection module arranged in the detection cavity, and the physical property detection module is a humidity sensor, a concentration sensor, and a laser particle sensor, the humidity sensor is used to detect the humidity of the air sample, the concentration sensor is used to detect the concentration of each component in the air sample, and the laser particle sensor is used to detect the particle size of particulate matters in the air sample.

[0010] In one of the embodiments, the air inlet assembly comprises an air inlet pipe arranged on the sampler main body and communicated with the detection cavity, and an air inlet pump arranged in the detection cavity and connected with the air inlet pipe, and the air outlet assembly comprises an air outlet pipe arranged on the sampler main body and communicated with the detection cavity, and an air outlet pump arranged in the detection cavity and connected with the air inlet pipe.

[0011] In one of the embodiments, a filter assembly arranged on the air inlet assembly is further included, and the filter assembly is used to filter large particles in the gas sample when the gas sample enters the detection cavity from the air inlet assembly.

[0012] In one of the embodiments, the filter assembly comprises a first filter layer and a second filter layer arranged in sequence along the input direction of the gas sample, the material of the first filter layer is quartz sand, the particle size range of the quartz sand is 2cm-4cm, and the second filter layer is a filter screen with a mesh number of 100mesh-200mesh.

[0013] In one embodiment, the device further includes an observation window, which includes an observation port located on the top of the sampler body and communicating with the detection cavity, a limiting plate located on one side of the observation port, and a cover rotatably located on the other side of the observation port, the cover being rotatable relative to the observation port to close the observation port.

[0014] In one embodiment, the cover is made of transparent material, and a sealing gasket is provided on the limiting plate. When the cover is rotated toward the observation port, the cover rests on the limiting plate, and the sealing gasket fits against the outer periphery of the cover to seal the observation port.

[0015] Compared with the prior art, this application has the following beneficial effects:

[0016] This application provides a novel constant-temperature automatic continuous ambient air sampler, comprising a sampler body, a detection chamber disposed on the sampler body, a constant-temperature component disposed within the detection chamber, an air inlet component disposed at one end of the sampler body, and an air outlet component disposed at the other end of the sampler body. During use, the gas sample enters the detection chamber through the air inlet component for detection and analysis, and after detection and analysis, it is discharged through the air outlet component. By setting a constant-temperature component in the detection chamber, when the ambient temperature is too low, the constant-temperature component can heat the detection chamber, so that the temperature of the gas sample is within a suitable temperature range for detection, reducing the impact of ambient temperature on the accuracy of its detection and analysis results, and improving the accuracy of air quality assessment. It has the advantages of simple structure, high degree of automation, simple operation, and easy promotion and implementation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a novel constant-temperature automatic continuous ambient air sampler according to this application;

[0018] Figure 2 This is a schematic diagram of the structure of a novel constant-temperature automatic continuous ambient air sampler after the observation window is opened;

[0019] Figure 3 This application Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 4 This is a top view of a novel constant-temperature automatic continuous ambient air sampler according to this application;

[0021] Figure 5 This application Figure 4 Sectional view at point BB;

[0022] Figure 6 This application Figure 5 A magnified view of a section at point C. Detailed Implementation

[0023] In combination Figures 1-6 In combination with the above, the technical scheme provided by the present application further illustrates a novel constant-temperature automatic continuous environmental air sampler, which comprises a sampler main body 1, a detection cavity 2 arranged on the sampler main body 1, a constant-temperature assembly 3 arranged in the detection cavity 2, an air inlet assembly 4 arranged on one end of the sampler main body 1 and communicated with the detection cavity 2, and an air outlet assembly 5 arranged on the other end of the sampler main body 1 and communicated with the detection cavity 2. The air sample enters the detection cavity 2 through the air inlet assembly 4 and is discharged through the air outlet assembly 5. The constant-temperature assembly 3 is used to stabilize the temperature in the detection cavity 2 to a preset standard interval value.

[0024] The present application provides a novel constant-temperature automatic continuous environmental air sampler, which comprises a sampler main body, a detection cavity arranged on the sampler main body, a constant-temperature assembly arranged in the detection cavity, an air inlet assembly arranged on one end of the sampler main body, and an air outlet assembly arranged on the other end of the sampler main body. During use, the gas sample enters the detection cavity through the air inlet assembly for detection and analysis, and is discharged through the air outlet assembly after detection and analysis. By arranging the constant-temperature assembly in the detection cavity, when the environmental temperature is too low, the constant-temperature assembly can heat the detection cavity, so that the temperature of the gas sample is in a suitable temperature interval for detection, thereby reducing the influence of the environmental temperature on the accuracy of the detection and analysis results and improving the accuracy of air quality evaluation. The novel constant-temperature automatic continuous environmental air sampler has the advantages of simple structure, high automation degree, simple operation mode, and easy popularization and implementation.

[0025] In the implementation process of the present embodiment, the constant-temperature assembly 3 comprises a temperature sensor arranged in the detection cavity 2 and a heating wire 30 signal-connected with the temperature sensor. The temperature sensor is used to sense the temperature in the detection cavity 2. When the temperature value sensed by the temperature sensor is lower than the preset standard interval value, the heating wire 30 is used to heat the detection cavity 2.

[0026] In the actual implementation process, when the temperature in the detection cavity is higher than the preset standard interval value, the heating wire stops heating, and the air inlet assembly increases the output power to increase the air inlet flow rate, so as to reduce the temperature in the detection cavity. The whole process is controlled by a PLC program.

[0027] In the actual implementation process, a control panel and a display module are arranged on the sampler main body. The control panel is used to control the detection assembly, the air inlet assembly, the air outlet assembly, and the constant-temperature assembly through a PLC program. The information of the gas sample detected by the detection assembly is displayed on the display.

[0028] In the implementation process of the present embodiment, a detection assembly 6 is further arranged in the detection cavity 2. When the gas sample enters the detection cavity 2, the detection assembly 6 is used to detect the composition and physical property parameters of the gas sample.

[0029] In the implementation process of the embodiment, the detection assembly 6 comprises a component detection module arranged in the detection cavity 2, and the component detection module is any one or a combination of more than one of a gas chromatograph mass spectrometer module, an ion chromatograph module, a high performance liquid chromatograph module, a scanning electron microscope module, and a spectrum module.

[0030] In the actual implementation process, the component detection module is a spectrum module, and the spectrum module is used for detecting the gas sample, so that the detection speed and accuracy can be effectively improved.

[0031] In the implementation process of the embodiment, the detection assembly 6 further comprises a physical property detection module arranged in the detection cavity 2, and the physical property detection module is a humidity sensor, a concentration sensor, and a laser particle sensor. The humidity sensor is used for detecting the humidity of the air sample, the concentration sensor is used for detecting the concentration of each component in the air sample, and the laser particle sensor is used for detecting the particle size of particulate matters in the air sample.

[0032] In the implementation process of the embodiment, the air inlet assembly 4 comprises an air inlet pipe 40 arranged on the sampler main body 1 and communicating with the detection cavity 2, and an air inlet pump 41 arranged in the detection cavity 2 and connected with the air inlet pipe 40 in a pipeline manner. The air outlet assembly 5 comprises an air outlet pipe 50 arranged on the sampler main body 1 and communicating with the detection cavity 2, and an air outlet pump 51 arranged in the detection cavity 2 and connected with the air inlet pipe 40 in a pipeline manner.

[0033] In the actual implementation process, flow meters are arranged on the air inlet pump and the air outlet pump, and the control panel can adjust the air inlet flow and the air outlet flow by controlling the output power of the pump body.

[0034] In the implementation process of the embodiment, a filter assembly 7 is further arranged on the air inlet assembly 4, and the filter assembly 7 is used for filtering large particles in the gas sample when the gas sample enters the detection cavity 2 from the air inlet assembly 4.

[0035] In the implementation process of the embodiment, the filter assembly 7 comprises a first filter layer 70 and a second filter layer 71 arranged in sequence along the input direction of the gas sample. The material of the first filter layer 70 is quartz sand, the particle size range of the quartz sand is 2 cm-4 cm, and the second filter layer 71 is a filter screen with a mesh number of 100 meshes-200 meshes.

[0036] In the actual implementation process, the average particle size of the quartz sand is 3.2 cm, and the second filter layer is a filter screen with a mesh number of 100 meshes.

[0037] The embodiment further comprises an observation window 8, which comprises an observation opening 80 arranged on the top of the sampler body 1 and communicated with the detection cavity 2, a limiting plate 81 arranged on one side of the observation opening 80, and a cover 82 rotatably arranged on the other side of the observation opening 80, wherein the cover 82 is rotatable relative to the observation opening 80 to cover the observation opening 80.

[0038] In the embodiment, the cover 82 is made of transparent material, and a sealing gasket is arranged on the limiting plate 81, when the cover 82 is rotated towards the observation opening 80, the cover 82 is arranged on the limiting plate 81, and the sealing gasket is attached to the outer periphery of the cover 82 to seal the observation opening 80.

[0039] The application provides a novel constant-temperature automatic continuous environmental air sampler, which comprises a sampler body, a detection cavity arranged on the sampler body, a constant-temperature assembly arranged in the detection cavity, an air inlet assembly arranged on one end of the sampler body, and an air outlet assembly arranged on the other end of the sampler body, wherein in use, a gas sample enters the detection cavity through the air inlet assembly for detection and analysis, and is discharged through the air outlet assembly after detection and analysis, the constant-temperature assembly is arranged in the detection cavity, when the environmental temperature is too low, the constant-temperature assembly can heat the detection cavity, so that the temperature of the gas sample is in a suitable temperature range for detection, the influence of the environmental temperature on the accuracy of the detection and analysis result is reduced, the accuracy of air quality evaluation is improved, and the novel constant-temperature automatic continuous environmental air sampler has the advantages of simple structure, high automation degree, simple operation mode, and easy popularization and implementation.

[0040] The above is only an embodiment of the application, and is not used to limit the application, any modification, equivalent replacement and improvement within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A novel thermostatic automatic continuous ambient air sampler, characterized in that, The sampler body (1), the detection cavity (2) provided on the sampler body (1), the constant temperature assembly (3) provided in the detection cavity (2), the air inlet assembly (4) provided on one end of the sampler body (1) and communicated with the detection cavity (2), and the air outlet assembly (5) provided on the other end of the sampler body (1) and communicated with the detection cavity (2), the air sample enters the detection cavity (2) from the air inlet assembly (4), and then is discharged from the air outlet assembly (5), and the constant temperature assembly (3) is used for stabilizing the temperature in the detection cavity (2) to a preset standard interval value.

2. A new type of constant temperature automatic continuous ambient air sampler according to claim 1, characterized in that, The constant temperature assembly (3) comprises a temperature sensor provided in the detection cavity (2) and a heating wire (30) signal connected with the temperature sensor, the temperature sensor is used for sensing the temperature in the detection cavity (2), and when the temperature value sensed by the temperature sensor is lower than the preset standard interval value, the heating wire (30) is used for heating in the detection cavity (2).

3. A new constant temperature automatic continuous ambient air sampler according to claim 1, characterized in that, Further comprising a detection assembly (6) provided in the detection cavity (2), when the gas sample enters the detection cavity (2), the detection assembly (6) is used for detecting the component and physical property parameter of the gas sample.

4. A new type of constant temperature automatic continuous ambient air sampler according to claim 3, characterized in that, The detection assembly (6) comprises a component detection module provided in the detection cavity (2), and the component detection module is any one or more combinations of a gas chromatography mass spectrometry module, an ion chromatography module, a high performance liquid chromatography module, a scanning electron microscope module and an energy spectrum module.

5. A new type of constant temperature automatic continuous ambient air sampler according to claim 3, characterized in that, The detection assembly (6) further comprises a physical property detection module provided in the detection cavity (2), the physical property detection module is a humidity sensor, a concentration sensor and a laser particle sensor, the humidity sensor is used for detecting the humidity of the air sample, the concentration sensor is used for detecting the concentration of each component in the air sample, and the laser particle sensor is used for detecting the particle size of particulate matters in the air sample.

6. A new constant temperature automatic continuous ambient air sampler according to claim 1, characterized in that, The air inlet assembly (4) comprises an air inlet pipe (40) provided on the sampler body (1) and communicated with the detection cavity (2), and an air inlet pump (41) provided in the detection cavity (2) and connected with the air inlet pipe (40) in pipeline, and the air outlet assembly (5) comprises an air outlet pipe (50) provided on the sampler body (1) and communicated with the detection cavity (2), and an air outlet pump (51) provided in the detection cavity (2) and connected with the air inlet pipe (40) in pipeline.

7. A new type of constant temperature automatic continuous ambient air sampler according to claim 6, characterized in that, Further comprising a filter assembly (7) provided on the air inlet assembly (4), when the gas sample enters the detection cavity (2) from the air inlet assembly (4), the filter assembly (7) is used for filtering large particles in the gas sample.

8. A new type of constant temperature automatic continuous ambient air sampler according to claim 7, characterized in that, The filter assembly (7) comprises a first filter layer (70) and a second filter layer (71) arranged in sequence along the input direction of the gas sample, the material of the first filter layer (70) is quartz sand, the particle size range of the quartz sand is 2cm-4cm, and the second filter layer (71) is a filter screen with a mesh number of 100-200 meshes.

9. A new constant temperature automatic continuous ambient air sampler according to claim 1, characterized in that, The observation window (8) comprises an observation opening (80) arranged on the top of the sampler body (1) and communicated with the detection cavity (2), a limiting plate (81) arranged on one side of the observation opening (80), and a cover (82) rotatably arranged on the other side of the observation opening (80), wherein the cover (82) is rotatable relative to the observation opening (80) to cover the observation opening (80).

10. A new type of constant temperature automatic continuous ambient air sampler according to claim 9, characterized in that, The cover (82) is made of transparent material, and a sealing gasket is arranged on the limiting plate (81), when the cover (82) is rotated towards the observation opening (80), the cover (82) is arranged on the limiting plate (81), and the sealing gasket is attached to the outer periphery of the cover (82) to seal the observation opening (80).

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