Air pollutant sampling and dissolving device

Abstract

The invention relates to an air pollutant sampling and dissolving device, and belongs to the technical field of pollution monitoring, the air pollutant sampling and dissolving device comprises a gas inlet module, an atomization module, a collection module and a storage module which are sequentially connected end to end, the gas inlet module is used for collecting gas into the atomization module, the atomization module comprises an atomization cavity, an atomization nozzle is arranged on the inner wall of the atomization cavity, and the atomization nozzle is connected with the collection module. The collecting module is provided with a stirring paddle; the system further comprises a control module, the control module is electrically connected with a plurality of concentration sensors, the concentration sensors are used for detecting concentration and uploading concentration data to the control module, the atomization nozzle comprises a liquid outlet pipe and an atomizer, and the liquid outlet pipe and the atomizer are matched to be used for spraying water mist. The control module is electrically connected with the liquid outlet pipe and the atomizer, the liquid outlet amount is increased by the control module when the concentration data exceeds a threshold value, and the liquid outlet amount is reduced by the control module when the concentration data is lower than the threshold value; the device has the characteristic that the liquid outlet amount is adjustable.

Description

Technical Field

[0001] The invention belongs to the technical field of pollution monitoring, and in particular relates to an air pollutant sampling and dissolving device. Background Art

[0002] In production and life, human activities will produce pollutants such as waste gas. When there are too many pollutants, the environmental quality will decline. Among the pollutants, water-soluble pollutants will enter the water body after discharge, and cause water source and soil pollution with the water cycle. For this reason, it is necessary to monitor the water-soluble pollutants in the air. Professional gas composition analyzers are relatively precise and large in size, which are inconvenient to deploy and difficult to monitor air pollutants with a large distribution range. Therefore, the overall concentration of air pollutants is detected in general pollutant detection schemes. The specific means are to set up multiple simple density sensors or particle sensors. However, the density sensor can only roughly detect the air density and then determine how many pollutants exist in the air in addition to the standard components. The particle sensor can only roughly detect the particle density. Both methods cannot accurately determine the specific content of the water-soluble pollutants. At this time, it is necessary to use a sampling and dissolution device to separate and sample the water-soluble pollutants in the air to monitor the content of water-soluble pollutants in the air. The principle is that some pollutants in the air are soluble in water. When the sampled air is dissolved in water, water can be used to concentrate and enrich some water-soluble pollutants in the air in water, which is convenient for subsequent research by investigators.

[0003] A general sampling and dissolving device includes at least an air intake structure and an atomization structure, and has a low dissolving efficiency for pollutants in the air. Therefore, Chinese patent CN116294039A discloses an environmental protection device with air sampling and filtering and purification functions, including: a casing for installing and enclosing other components; a capture unit, which includes an intake fan for sending outside air into the casing, an atomization device for atomizing circulating water to adsorb and settle air pollutants, and a water collecting funnel for collecting and guiding condensed water containing settled and dissolved air pollutants; preferably, the atomization device includes an annular water storage barrel and an ultrasonic atomizer, and the annular water storage barrel is provided with an annular support for supporting the water collecting funnel and sealing the lower photocatalyst purification unit and communicating with the upper capture unit; preferably, a condensation plate is installed at the casing top cover above the water collecting funnel, and the condensation plate is provided with a plurality of condensation holes; the atomized water generated by the capture unit and the ultrasonic atomizer adsorbs and settles the dissolved air pollutants, thereby increasing the total contact area between water and air, thereby improving the dissolution and enrichment efficiency of pollutants in the air in water and the sampling effect;

[0004] However, in the above process, the concentration of air pollutants is different under different environments. For air with different pollutant concentrations, when the atomization degree is high, a higher water supply power is required to maintain the total volume of water used to dissolve the pollutants unchanged, that is, more energy consumption is required. Therefore, when the atomized liquid exceeds the requirement, unnecessary energy consumption will result in atomization liquid less than the requirement, the pollutants will not be fully dissolved. Therefore, an air pollutant sampling and dissolution device with adjustable liquid output is required. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides an air pollutant sampling and dissolution device, which has the characteristic of adjustable liquid output.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An air pollutant sampling and dissolving device comprises an air intake module, an atomization module, a collection module and a storage module which are connected end to end in sequence, wherein the air intake module is used to collect gas into the atomization module, the atomization module comprises an atomization chamber, the inner wall of the atomization chamber is provided with an atomization nozzle, and the collection module is provided with a stirring paddle;

[0008] It also includes a control module, which is electrically connected to a plurality of concentration sensors, and the plurality of concentration sensors are used to detect concentration and upload concentration data to the control module. The atomizing nozzle includes a liquid outlet pipe and an atomizer, and the liquid outlet pipe and the atomizer are used to spray water mist. The control module is electrically connected to the liquid outlet pipe and the atomizer, respectively. The control module increases the liquid output when the concentration data exceeds a threshold value, and reduces the liquid output when the concentration data is lower than a threshold value.

[0009] As a preferred technical solution of the present invention, the control module is pre-input with a standard liquid output volume C0 and a standard concentration N0, a plurality of the concentration sensors are used to detect the concentration N and upload the data to the control module, the control module calculates the mean value N of the plurality of data, and the control module adjusts the liquid output volume of the liquid outlet pipe to C;

[0010] Where C = (N / N0) × C0.

[0011] As a preferred technical solution of the present invention, the control module is electrically connected to a flow sensor, which is arranged in a tube. The flow sensor is used to detect the air flow and upload the flow data to the control module. The control module is electrically connected to the atomizing nozzle and is used to control the atomization degree of the atomizing nozzle. The control module increases the atomization degree of the atomizing nozzle when the flow data is higher than a threshold value, and reduces the atomization degree of the atomizing nozzle when the flow data is lower than a threshold value.

[0012] As a preferred technical solution of the present invention, the control module is pre-input with a standard atomization degree P0 and a standard flow rate L0, the flow sensor is used to detect the air flow rate L and upload the flow rate data to the control module, and the control module adjusts the atomization degree of the atomizing nozzle to P;

[0013] Among them, P=C / C0×P0.

[0014] As a preferred technical solution of the present invention, the control module is electrically connected to the stirring paddle, the control module reduces the stirring paddle power when the flow data exceeds a threshold, the control module increases the stirring paddle power when the flow data is lower than the threshold, the control module upwardly corrects the stirring paddle power when the concentration data is higher than the threshold, and the control module downwardly corrects the stirring paddle power when the concentration data is lower than the threshold.

[0015] As a preferred technical solution of the present invention, the control module is pre-input with the standard power Pj0 of the stirring paddle, and the control module adjusts the power of the stirring paddle to Pj;

[0016] Among them, Pj=(L0 / L×k1+N / N0×k2) / (k1+k2)×Pj0.

[0017] The beneficial effects of the present invention are:

[0018] (1) The pollutant concentration in the air intake module is detected by setting a concentration sensor, and the liquid output is adjusted according to the pollutant concentration, thereby adjusting the particle density. When the pollutant concentration is high and the liquid output needs to be increased, thereby increasing the particle density to improve the pollutant absorption capacity, the liquid output is increased. At the same time, when the pollutant concentration in the air is low and there is no need to consume additional liquid pump power to increase the liquid output, the liquid output is reduced;

[0019] (2) The flow rate in the air intake module is detected by setting a flow sensor, and the atomization degree is increased when the flow rate exceeds a threshold value. When the flow rate is high and the atomization particle coverage rate is required, the atomization degree is increased to ensure the particle coverage rate. At the same time, when the flow rate is low and excessive coverage rate is not required, the atomization degree is reduced to reduce power consumption;

[0020] (3) By making the control module reduce the agitator power when the flow data exceeds the threshold, and reduce the agitator power when the flow data is lower than the threshold, and at the same time correct the agitator power upward when the concentration data is higher than the threshold, and correct the agitator power downward when the concentration data is lower than the threshold, the agitator power is increased when it is necessary to extend the time that the air and the pollutants therein stay in the atomization chamber, and the agitator power is reduced when it is not necessary to extend the time that the air and the pollutants therein stay in the atomization chamber, thereby reducing power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the specific structure of the present invention;

[0024] Figure 3 This is a control loop block diagram of the present invention.

[0025] Description of main component symbols:

[0026] In the figure: 1. housing; 11. atomization chamber; 12. liquid collecting tank; 2. air intake module; 22. air intake pipe; 3. atomization module; 31. atomizer; 32. liquid outlet pipe; 33. liquid pump; 4. stirring paddle; 5. control module. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0028] See also Figure 1-3 , an air pollutant sampling and dissolving device, comprising an air intake module 2, an atomization module 3, a collection module and a storage module connected end to end in sequence, the air intake module 2 is used to collect gas into the atomization module 3, the atomization module 3 comprises an atomization chamber 11, the inner wall of the atomization chamber 11 is provided with an atomization nozzle, and the collection module is provided with a stirring paddle 4;

[0029] Specifically, the device further includes a cylindrical housing 1, and the air intake module 2 includes a plurality of air intake pipes 22, one end of the plurality of air intake pipes 22 is connected to the air collection point, and the other end is connected to the housing 1, and the air enters the housing 1 from the air intake pipes 22;

[0030] A funnel is provided at the upper part of the housing 1, and the opening end of the funnel is arranged toward the upper part of the housing 1. The upper inner wall of the housing 1 and the funnel together form an atomizing chamber 11. After the air enters the housing 1, it is in the atomizing chamber 11. At the same time, the atomizing module 3 includes a liquid outlet pipe 32, a liquid pump 33 and an atomizer 31. The liquid outlet pipe 32 and the atomizer 31 cooperate to spray water mist. Specifically, a water storage tank is provided outside the housing 1. The atomizer 31 is an atomizing nozzle. The atomizer 31 passes through The atomizer 31 is arranged at the part of the housing 1 that constitutes the atomizing chamber 11. At this time, the inner end of the atomizer 31 is located at the atomizing chamber 11 part in the housing 1, and the outer end of the atomizer 31 is located outside the housing 1. The liquid outlet pipe 32 connects the outer end of the atomizer 31 with the liquid storage tank through the liquid pump 33. The liquid pump 33 is used to transport the water in the liquid storage tank to the atomizer 31 through the liquid outlet pipe 32. The atomizer 31 atomizes the water into a plurality of particles, so that atomized liquid droplets float in the atomizing chamber 11.

[0031] At the same time, the collection module includes the above-mentioned funnel, a porous plate arranged above the opening of the funnel, and a liquid collecting tank 12 below the funnel. The liquid collecting tank 12 is arranged in the shell 1. The height of the porous plate is lower than the atomizing nozzle. The main body of the porous plate is a circular plate with the same radial cross-sectional shape as the shell 1. A plurality of circular holes are arranged on the porous plate. At this time, the porous plate is located below the atomizing chamber 11 and close to the funnel. When air enters the atomizing chamber 11 from the air inlet pipe 22, the water-soluble pollutants therein collide with the atomized droplets and dissolve in the droplets. The droplets containing pollutants pass through the porous plate and the funnel below the porous plate and enter the liquid collecting tank 12.

[0032] Among air pollutants, water-soluble pollutants will enter the water body after being discharged, and cause water source and soil pollution as the water circulates. Therefore, it is necessary to monitor the water-soluble pollutants in the air. However, professional gas composition analyzers are relatively precise and large in size, which are inconvenient to deploy and difficult to monitor air pollutants with a large distribution range. Therefore, in general pollutant detection schemes, the overall concentration of air pollutants is detected. The specific means is to set up multiple simple density sensors or particle sensors. However, the density sensor can only roughly detect the air density and then determine how many pollutants exist in the air in addition to the standard components. The particle sensor can only roughly detect the particle density. Both methods cannot accurately determine the specific content of the water-soluble part of the pollutants. At this time, the air pollutant sampling and dissolution device separates the water-soluble part of the air pollutants from the air itself and other water-insoluble pollutants;

[0033] At the same time, some solutions use precision gas sensors to measure atmospheric pollutants. Some components, such as carbon monoxide and nitrogen dioxide, emit relatively close electrical signals after absorbing electrical signals of specific wavelengths, which is not convenient for direct measurement. In this case, it is necessary to separate the water-soluble nitrogen dioxide from the water-insoluble carbon monoxide and measure the water-soluble nitrogen dioxide.

[0034] When in use, air enters the housing 1 from the air inlet pipe 22, and the liquid outlet pipe 32 transports the water in the liquid storage tank to the atomizer 31. At the same time, the atomizer 31 atomizes the water into a plurality of particles, so that atomized droplets float in the atomization chamber 11. At this time, the water-soluble pollutants in the air collide with the atomized droplets and dissolve in the droplets. The droplets containing the pollutants pass through the porous plate and the funnel below the porous plate into the liquid collecting tank 12, completing the sampling and dissolution of the air pollutants.

[0035] In the above process, the concentration of air pollutants is different under different environments. For air with different pollutant concentrations, the volume of atomized liquid required for dissolution is different. When the atomized liquid is more, a higher water supply power is required, that is, more energy consumption is required. Therefore, when the volume of atomized liquid exceeds the requirement, unnecessary energy consumption will result. When the volume of atomized liquid is less than the requirement, the density of atomized particles per unit volume will be smaller, and there is a probability that the pollutants cannot be fully dissolved. For this reason, a control module 5 is also included. The control module 5 is electrically connected to a plurality of concentration sensors. The plurality of concentration sensors are used to detect the concentration and upload the concentration data to the control module 5. The atomizing nozzle includes a liquid outlet pipe 32 and an atomizer 31. The liquid outlet pipe 32 and the atomizer 31 cooperate to spray water mist. The control module 5 is electrically connected to the liquid outlet pipe 32 and the atomizer 31 respectively. The control module 5 increases the liquid output when the concentration data exceeds the threshold, and reduces the liquid output when the concentration data is lower than the threshold.

[0036] Specifically, the air intake pipe 22 of the air intake module 2 is provided with a plurality of branches at one end away from the housing 1, and the plurality of branches are used to collect air from a plurality of air collection points. At the same time, a plurality of concentration sensors are respectively provided in the plurality of branches to detect the concentration of air pollutants in the plurality of branches. The plurality of concentration sensors upload the pollutant data of the plurality of branches to the control module 5 at a frequency of once per second. The control module 5 calculates the average of the plurality of data each time after receiving the plurality of data, and calculates the concentration data N.

[0037] As for the concentration sensor, specifically, for the convenience of layout, the concentration sensor is an air pollutant concentration detector with a relatively simple structure. The specific principle is to determine the pollutant content in the air by detecting the air density. Since the density of common pollutants, such as gaseous carbon oxides, sulfur oxides and nitrogen oxides, is greater than the air density, the higher the air density, the more pollutants there are. That is, the larger the density data detected by the concentration sensor, the greater the pollutant concentration, and the larger the volume of atomized liquid required for dissolution;

[0038] When the concentration data N exceeds the threshold, there are more pollutants in the unit volume. At this time, it is necessary to increase the number of atomized particles in the unit volume to increase the particle density. When the liquid output is large, the total amount of particles increases. At this time, the particle density is large, and the solubility of pollutants in the air per unit volume is improved. Therefore, when the pollutant concentration is large, the liquid output is increased; when the concentration data N is small, there is no need to increase the particle density. At this time, there is no need to increase the liquid output to reduce power consumption;

[0039] During the adjustment process, specifically, the control module 5 is pre-input with the standard liquid output volume C0 and the standard concentration N0, and the control module 5 adjusts the liquid output volume of the liquid outlet pipe 32 to C

[0040] When N is large, it means that the concentration of pollutants in the air is large. At this time, it is necessary to increase the particle density to improve the dissolution effect of high-concentration pollutants. At this time, the value of C=(N / N0)×C0 is large. When the control module 5 adjusts the atomization degree to C, the atomization degree is increased when the pollutant concentration is large; similarly, when N is small, it means that the concentration of pollutants in the air is small. At this time, there is no need to consume additional power consumption of the liquid pump 33 to increase the particle density. At this time, the value of C=(N / N0)×C0 is small. When the control module 5 adjusts the atomization degree to C, the atomization degree is reduced when the pollutant concentration is small;

[0041] By setting a concentration sensor to detect the pollutant concentration in the air intake module 2, and adjusting the liquid output and thus the particle density according to the pollutant concentration, the liquid output is increased when the pollutant concentration is high and it is necessary to increase the liquid output and then increase the particle density to improve the pollutant absorption capacity. At the same time, when the pollutant concentration in the air is low and there is no need to consume additional power of the liquid pump 33 to increase the liquid output, the liquid output is reduced.

[0042] In different situations, the total volume per unit time of the air entering the housing 1, that is, the flow rate in the air intake module 2 is different. For example, when the pressure at the air intake end of the air intake pipe 22 is high, the air flow rate entering the housing 1 is large and the pollutants are more. At this time, there are four situations;

[0043] When the air flow rate and pollutant concentration are both large, the air with pollutants has a greater probability of filling the atomization chamber 11, and the atomized particles need to be increased. At the same time, more pollutants need to be absorbed per unit volume, and the density of the atomized particles needs to be increased. Therefore, the liquid output needs to be increased to ensure the density of the atomized particles in the atomization chamber 11, so that more pollutants can be fully absorbed, avoiding the situation where the atomization degree is high but the total volume of the liquid is small, resulting in the inability to completely dissolve the sample;

[0044] When the air flow is large and the pollutant concentration is small, a large amount of air with relatively thin pollutants enters the atomizing chamber 11 and has a high probability of filling the atomizing chamber 11. At this time, the total amount of pollutants is small, and a high particle density is not required to absorb the pollutants. Therefore, a large amount of liquid output is not required, but the coverage rate of the atomized particles needs to be guaranteed to ensure that the pollutants in the air of the atomizing chamber 11 are absorbed and filled. The smaller the particles, the lighter the weight, the easier it is to fill the atomizing chamber 11 with the airflow, and the greater the coverage rate, the more atomization degree needs to be increased at this time;

[0045] When the air flow rate is small and the pollutant concentration is large, a small amount of air with a high pollutant concentration enters the atomizing chamber 11, but the probability of filling the atomizing chamber 11 is low. At this time, it is not necessary to ensure the coverage rate of the atomizing chamber 11 by the atomized particles, but it is necessary to ensure the particle density per unit volume to ensure the absorption of pollutants.

[0046] When the air flow rate and pollutant concentration are both small, a higher atomization degree and liquid output are not required;

[0047] To this end, the control module 5 is electrically connected to a flow sensor, which is arranged in the tube. The flow sensor is used to detect the air flow and upload the flow data to the control module 5. The control module 5 is electrically connected to the atomizing nozzle and is used to control the atomization degree of the atomizing nozzle. The control module 5 increases the atomization degree of the atomizing nozzle when the flow data is higher than the threshold value, and reduces the atomization degree of the atomizing nozzle when the flow data is lower than the threshold value.

[0048] During the adjustment process, specifically, the control module 5 is pre-input with a standard atomization degree P0 and a standard flow rate L0, the flow sensor is used to detect the air flow rate L and upload the flow rate data to the control module 5, and the control module 5 adjusts the atomization degree of the atomizing nozzle to P, wherein P=C / C0×P0;

[0049] When the air flow rate P is large, a large amount of air enters the atomization chamber 11. At this time, the coverage rate needs to be increased. The smaller the particles are, the lighter they are, and the easier it is to fill the atomization chamber 11 with the airflow. The greater the coverage rate, the more it is necessary to increase the degree of atomization. At this time, the value of P=C / C0×P0 is large. When the control module 5 instructs the atomization degree to be adjusted to P, it is completed when the flow rate is large and the atomization degree needs to be increased. When the air flow rate is small, there is no need to increase the coverage rate. However, since the atomization degree increases, the mist outlet is smaller and the resistance to the liquid becomes larger, it is necessary to increase the power of the liquid pump 33 accordingly to ensure that enough liquid overcomes the resistance of the mist outlet. At this time, there is no need to increase the degree of atomization, that is, there is no need to increase the power of the liquid pump 33 to reduce power consumption. At this time, the value of P=C / C0×P0 is small. When the control module 5 instructs the atomization degree to be adjusted to P, it is completed when the flow rate is small and the atomization degree does not need to be increased. Reduce the degree of atomization and reduce power consumption;

[0050] By setting a flow sensor to detect the flow in the air intake module 2, and increasing the atomization degree when the flow exceeds a threshold, when the flow is high and atomized particle coverage is required, the atomization degree is increased to ensure the particle coverage. At the same time, when the flow is low and excessive coverage is not required, the atomization degree is reduced to reduce power consumption.

[0051] At the same time, after adjusting the particle density according to the mold pollutant concentration, although the corresponding pollutant concentration is adjusted, there is a probability that it will affect the amount of dissolved pollutants, thereby affecting the number of samples. For example, the current water-soluble pollutants in the air are 50 micrograms per cubic meter, and the atomized particles can only absorb 40 micrograms of pollutants per cubic meter of air. When the overall pollutant concentration increases, the water-soluble pollutants in the air are 60 micrograms per cubic meter. After the particle density is increased, it can absorb 60 micrograms of pollutants per cubic meter of air. At this time, the particle density affects the amount of pollutants after dissolved sampling;

[0052] To this end, specifically, before dissolving and sampling, the operator first sets the standard pollutant quantity W corresponding to each particle density value. For example, when the particle density is C n The corresponding standard pollutant quantity is W n During the sampling process, since the control module 5 receives and calculates the concentration data N once per second and adjusts the particle density once, the control module 5 records the concentration data every second. After the sampling is completed, assuming that the sampling time is M seconds in total, the operator retrieves the particle density change and calculates the sum of the number of standard pollutants corresponding to each particle density within M seconds. For example, the particle density in the first second of sampling is C 1n , the corresponding standard pollutant quantity is W 1n , the particle density in the second is C 2n , the corresponding standard pollutant quantity is W 2n , the particle density at the Mth second is C Mn , the corresponding standard pollutant quantity is W Mn , the operator will W 1n , W 2n ......W Mn The sum is calculated to obtain the amount of standard pollutants absorbed by the atomized particles during the entire dissolved sampling process.

[0053] In order to improve the contact degree between the air and the atomized particles in the atomizing chamber 11 and further improve the sampling and dissolving effect, a stirring paddle 4 is also included. In this embodiment, the stirring paddle 4 is arranged above the porous plate. The stirring paddle 4 includes a plurality of blades. The stirring paddle 4 is used to form an upward airflow and stir the air in the atomizing chamber 11 at the same time. When in use, the upward airflow causes the air and the pollutants therein to stay in the atomizing chamber 11 for a period of time, and then enter the funnel through the porous plate, so that the pollutants in the air are more fully mixed with the atomized particles.

[0054] At the same time, when the air flow rate or pollutant concentration is low, an excessively high power of the stirring paddle 4 is likely to form an excessively strong upward airflow, which in turn causes the pollutants to be unable to enter the atomization chamber 11 in sufficient quantity, and the sampling and dissolution efficiency is reduced. When the pollutant concentration or flow rate in the air is high, it is necessary to extend the time that the air and the pollutants therein stay in the atomization chamber 11. For this purpose, the control module 5 is electrically connected to the stirring paddle 4. The control module 5 increases the power of the stirring paddle 4 when the flow data exceeds the threshold, and reduces the power of the stirring paddle 4 when the flow data is lower than the threshold. The control module 5 upwardly corrects the power of the stirring paddle 4 when the concentration data is higher than the threshold, and the control module 5 downwardly corrects the power of the stirring paddle 4 when the concentration data is lower than the threshold.

[0055] Specifically, the control module 5 is pre-input with the standard power Pj0 of the stirring blade 4, and the control module 5 adjusts the power of the stirring blade 4 to Pj

[0056] Wherein, Pj = (L0 / L×k1+N / N0×k2) / (k1+k2)×Pj0, k1 and k2 are weights preset by the operator;

[0057] When the value of C or N is high, it means that the concentration or flow rate of pollutants in the air is high. At this time, the power of the stirring paddle 4 needs to be increased. At this time, the value of Pj=(L0 / L×k1+N / N0×k2) / (k1+k2)×Pj0 is high. When the control module 5 instructs the power of the stirring paddle 4 to be Pj, the power of the stirring paddle 4 is increased when it is necessary to extend the time that the air and the pollutants therein stay in the atomization chamber 11; similarly, when the value of C or N is small, it means that the concentration or flow rate of pollutants in the air is low. At this time, there is no need to increase the power of the stirring paddle 4. At this time, the value of Pj=(L0 / L×k1+N / N0×k2) / (k1+k2)×Pj0 is low. When the control module 5 instructs the power of the stirring paddle 4 to be Pj, the power of the stirring paddle 4 is reduced when it is not necessary to extend the time that the air and the pollutants therein stay in the atomization chamber 11, thereby reducing power consumption;

[0058] By making the control module 5 increase the power of the stirring paddle 4 when the flow data exceeds the threshold value, and reduce the power of the stirring paddle 4 when the flow data is lower than the threshold value, and at the same time upwardly correct the power of the stirring paddle 4 when the concentration data is higher than the threshold value, and downwardly correct the power of the stirring paddle 4 when the concentration data is lower than the threshold value, the power of the stirring paddle 4 can be increased when it is necessary to extend the time that the air and the pollutants therein stay in the atomization chamber 11, and the power of the stirring paddle 4 can be reduced when it is not necessary to extend the time that the air and the pollutants therein stay in the atomization chamber 11, thereby reducing power consumption.

[0059] The working principle and use process of the present invention:

[0060] When in use, air enters the outer shell 1 from the air inlet pipe 22, and the liquid outlet pipe 32 transports the water in the liquid storage tank to the atomizer 31. At the same time, the atomizer 31 atomizes the water into a plurality of particles, so that atomized droplets float in the atomization chamber 11. At this time, the water-soluble pollutants in the air collide with the atomized droplets and dissolve in the droplets. The droplets containing the pollutants pass through the porous plate and the funnel under the porous plate into the liquid collecting tank 12, completing the sampling and dissolution of air pollutants.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An air pollutant sampling and dissolution device, characterized in that: It comprises an air intake module, an atomization module, a collection module and a storage module which are connected end to end in sequence, wherein the air intake module is used to collect gas into the atomization module, the atomization module comprises an atomization chamber, the inner wall of the atomization chamber is provided with an atomization nozzle, and the collection module is provided with a stirring paddle; It also includes a control module, which is electrically connected to a plurality of concentration sensors, and the plurality of concentration sensors are used to detect concentration and upload concentration data to the control module. The atomizing nozzle includes a liquid outlet pipe and an atomizer, and the liquid outlet pipe and the atomizer are used to spray water mist. The control module is electrically connected to the liquid outlet pipe and the atomizer, respectively. The control module increases the liquid output when the concentration data exceeds a threshold value, and reduces the liquid output when the concentration data is lower than a threshold value.

2. The air pollutant sampling and dissolution device according to claim 1, characterized in that: The control module is pre-input with a standard liquid output volume C0 and a standard concentration N0, and a plurality of the concentration sensors are used to detect the concentration N and upload the data to the control module, and the control module calculates the mean value N of the plurality of data, and the control module adjusts the liquid output volume of the liquid outlet pipe to C; Where C = (N / N0) × C0.

3. The air pollutant sampling and dissolution device according to claim 2, characterized in that: The control module is electrically connected to a flow sensor, which is arranged in a tube. The flow sensor is used to detect air flow and upload flow data to the control module. The control module is electrically connected to the atomizing nozzle and is used to control the atomization degree of the atomizing nozzle. The control module increases the atomization degree of the atomizing nozzle when the flow data is higher than a threshold value, and reduces the atomization degree of the atomizing nozzle when the flow data is lower than a threshold value.

4. The air pollutant sampling and dissolution device according to claim 3, characterized in that: The control module is pre-input with a standard atomization degree P0 and a standard flow rate L0, the flow sensor is used to detect the air flow rate L and upload the flow rate data to the control module, and the control module adjusts the atomization degree of the atomizing nozzle to P; Among them, P=L / L0×P0.

5. The air pollutant sampling and dissolution device according to claim 4, characterized in that: The control module is electrically connected to the stirring paddle. The control module reduces the stirring paddle power when the flow data exceeds a threshold value, increases the stirring paddle power when the flow data is lower than the threshold value, corrects the stirring paddle power upward when the concentration data is higher than the threshold value, and corrects the stirring paddle power downward when the concentration data is lower than the threshold value.

6. The air pollutant sampling and dissolution device according to claim 5, characterized in that: The control module is pre-input with a standard power Pj0 of the stirring paddle, and the control module adjusts the power of the stirring paddle to Pj; Among them, Pj=(L0 / L×k1+N / N0×k2) / (k1+k2)×Pj0.

7. The air pollutant sampling and dissolution device according to claim 4, characterized in that: The collecting module comprises a funnel, and a porous plate is arranged on the top of the funnel, and the porous plate is located at the lower side of the atomization chamber.

8. The air pollutant sampling and dissolution device according to claim 7, characterized in that: The stirring paddle is arranged above the porous plate.

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