A rapid and accurate air pollutant purification and detection system

Abstract

This invention proposes a rapid and accurate air pollutant purification and detection system, belonging to the field of air pollutant detection technology. It includes a standardized detection chamber, a mixing device, a detection device, and air ducts. Two standardized detection chambers are provided: one serves as a gas collection chamber, and the other as a material detection chamber. The two chambers are connected by two air ducts to form a gas circulation system. Each standardized detection chamber includes a mixing device and a detection device. The detection device measures the pollutant concentration, temperature, humidity, and airflow velocity within the standardized detection chamber. This invention can detect the purification effect of materials on pollutants in real time, and simultaneously simulate and record the temperature, humidity, and gas flow rate under different environments. This invention has a simple structure, can be flexibly disassembled and assembled, and features high precision, high speed, and wide applicability. It can provide quantitative data detection of the purification effect of different materials on indoor pollutants.

Description

Technical Field

[0001] This invention belongs to the field of air pollutant detection technology, specifically relating to a rapid and accurate air pollutant purification and detection system. Background Technology

[0002] Indoor air pollutants refer to harmful gases, particulate matter, and biological agents present in the indoor environment that adversely affect human health. There are many types of indoor air pollutants, and their impact on human health varies. Five main types require special attention: formaldehyde, ammonia, radon, benzene compounds, and total volatile organic compounds (TVOC). Formaldehyde and some TVOCs are easily soluble in water, and their volatilization is accelerated under high temperatures; therefore, environmental temperature and humidity conditions are crucial for indoor pollutant detection. Ensuring the accuracy and effectiveness of indoor pollutant detection is vital for protecting people's health; failure to implement detection effectively can threaten people's lives. However, many problems have emerged in the actual implementation of detection work, such as insufficient accuracy of testing equipment, improper equipment operation, low professional competence of personnel, and unreasonable testing methods. These factors directly affect the accuracy of the detection. Therefore, it is necessary to adopt reasonable testing methods to ensure that the corresponding testing work demonstrates concrete results.

[0003] The detection methods for indoor pollutants are mainly divided into the following categories: (1) Animal and plant detection method, which judges the degree of indoor pollution by the reaction of animals and plants in the detection environment. For example, animals may become less active, sick or even die, and plants may drop leaves, turn yellow and die. This detection method cannot determine the type of pollutant and is also difficult to analyze the concentration data. (2) Physicochemical detection method, which mainly includes spectrophotometry, gas chromatography, pump suction electrostatic collection energy dispersive spectroscopy, etc., which are detected by professional experimental instruments and methods. This detection method is the most precise, but at present, it is also the most time-consuming and economically costly. (3) On-site detection by detection instruments. With the advancement of technology, many small and portable pollutant sensors have appeared on the market. They can monitor the concentration of indoor pollutants in real time, which provides convenience for home users. However, most devices have a relatively long detection cycle, cannot detect the purification efficiency of materials in different physical states, and few devices can monitor environmental conditions such as temperature and humidity at the same time. Summary of the Invention

[0004] In view of the problems in the background art, the present invention proposes a rapid and accurate air pollutant purification and detection system to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above problems, the present invention is achieved through the following technical solution:

[0006] A rapid and accurate air pollutant purification and detection system includes a standardized detection chamber and two air ducts. The standardized detection chamber is equipped with a mixing device and a detection device. There are two standardized detection chambers, which are arranged one in front of the other and spaced apart. Each standardized detection chamber has a low-position interface with a valve on the lower part of its left side wall and a high-position interface with a valve on the upper part of its right side wall. The valves of the low-position interface and the high-position interface are located on the outside of the standardized detection chamber.

[0007] Two air guide tubes are located on the left and right sides of the standardized testing chamber, respectively. One end of the air guide tube on the left is fixedly connected to the air outlet of the low-position interface on the rear side, and the other end is detachably and fixedly connected to the air inlet of the low-position interface on the front side. One end of the air guide tube on the right is fixedly connected to the air inlet of the high-position interface on the rear side, and the other end is detachably and fixedly connected to the air outlet of the high-position interface on the front side.

[0008] The mixing device includes a fan master control and four fans. The fan master control is located on the outer wall of the standardized testing box, and the four fans are located inside the standardized testing box. Two fans are installed at intervals on the upper rear side of the standardized testing box, and the other two fans are installed at intervals on the lower front side of the standardized testing box. The signal ports of the four fans are all connected to the fan master control for communication.

[0009] The detection device includes a pollutant data acquisition unit and a temperature and humidity data acquisition unit. Both the pollutant data acquisition unit and the temperature and humidity data acquisition unit are fixed to the front side wall of the standardized detection box in an embedded manner. The probes of the pollutant data acquisition unit and the temperature and humidity data acquisition unit are located inside the standardized detection box. A gas flow meter is installed inside the front standardized detection box. The gas flow meter is located on the high-level interface on the front side. The probe of the gas flow meter is located inside the air inlet end of the high-level interface.

[0010] The standardized testing chamber at the front is equipped with an air pump. The air inlet of the air pump is sealed to the air outlet of the front low-position interface. The front low-position interface is equipped with an air suction hood, which is detachably connected to the air inlet of the front low-position interface. The air suction hood has a removable and replaceable filter membrane inside.

[0011] The standardized testing chamber at the rear has a filter paper board and a sample tray inside. The sample tray is installed at the bottom of the standardized testing chamber, and the filter paper board is horizontally set above the sample tray.

[0012] A protruding support strip is fixed on the side wall, and a detachable, horizontally placed filter paper is provided on the protruding support strip for placing glass fiber filter paper.

[0013] Each standardized testing chamber is equipped with a sample tray, which can be placed horizontally on the lower inner side of the standardized testing chamber.

[0014] Furthermore, the standardized testing chamber has a cubic structure with an internal volume of 0.1 m³. 3 The standardized testing chamber has a base plate and four side walls made of transparent glass, with a steel frame fixedly installed inside.

[0015] Each of the standardized testing boxes is equipped with a caster wheel at each of the four corners of its bottom.

[0016] Furthermore, the top of the standardized testing box is an open structure and is equipped with a top cover. One side of the top cover is hinged to the standardized testing box, and the other side is fixedly connected to the standardized testing box by a buckle. The top cover seals the standardized testing box, and a sealing ring is provided at the position on the front side of the standardized testing box where it mates with the probe.

[0017] Furthermore, the standardized testing chamber has two protruding support strips inside. The two protruding support strips are symmetrically fixed on the inner walls of the left and right sides of the standardized testing chamber, and the filter paper is laid on the upper surface of the two protruding support strips on the left and right sides.

[0018] Furthermore, the pollutant data collector includes at least one of a PM2.5 detector, a formaldehyde detector, a benzene detector, and a ketone detector.

[0019] Furthermore, the air guide tube is a transparent silicone tube, the filter paper and sample tray are both made of transparent hard glass material, and the fan blades are made of metal blades.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In this invention, the standardized testing chambers are interchangeable and have a fixed volume, which facilitates accurate calculation of the product's effect in removing contaminants.

[0022] 2. This invention improves detection accuracy by incorporating a fan to uniformly mix the gas.

[0023] 3. The components in the invention can be flexibly disassembled and assembled, and the standardized testing box is equipped with casters for easy movement and use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the standardized testing box of this invention.

[0025] Figure 2 This is an exploded view of the air intake hood of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the present invention used as a gas collection box.

[0027] Figure 4This is a schematic diagram of the material testing box used in this invention to verify the effects of liquid materials.

[0028] Figure 5 This is a schematic diagram of the material testing box used in this invention to verify the effects of gel materials, solid materials, and different plant materials.

[0029] Figure 6 This is a schematic diagram of the structure of the rapid and accurate air pollutant purification and detection system of the present invention.

[0030] Figure 7 This is a flowchart of the rapid and accurate air pollutant purification and detection system of the present invention.

[0031] The following are marked in the diagram: 1. Standardized testing chamber; 2. Air duct; 3. Low-position interface; 4. High-position interface; 5. Fan; 6. Fan control panel; 7. Pollutant data acquisition unit; 8. Temperature and humidity data acquisition unit; 9. Gas flow meter; 10. Suction pump; 11. Filter membrane; 12. Suction hood; 13. Filter paper; 14. Casters; 15. Sample tray. Detailed Implementation

[0032] To make the technical means, creative features, objectives, and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] Combination Figures 1 to 7 As shown, a rapid and accurate air pollutant purification and detection system includes a standardized detection chamber 1 and two air guide pipes 2. The standardized detection chamber 1 is equipped with a mixing device and a detection device. Two standardized detection chambers 1 are arranged one in front of the other, spaced apart. The standardized detection chamber 1 located at the front serves as a gas collection chamber, and another chamber serves as a material testing chamber for verifying the effectiveness of liquid materials. Each standardized detection chamber 1 has a cubic structure with an internal volume of 0.1 m³. 3 The base plate and four side walls of the standardized testing box 1 are made of transparent glass, and a steel frame is fixedly installed inside. Each of the four corners of the bottom of the standardized testing box 1 is equipped with a caster wheel 14, which can flexibly adjust the position of the standardized testing box 1.

[0034] Each standardized testing chamber 1 has a low-position interface 3 with a valve on the lower left side wall and a high-position interface 4 with a valve on the upper right side wall. The valves of both the low-position interface 3 and the high-position interface 4 are located outside the standardized testing chamber 1. The air guide tube 2 is a transparent silicone tube. The two air guide tubes 2 are located on the left and right sides of the standardized testing chamber 1, respectively. One end of the left air guide tube 2 is fixedly connected to the air outlet of the rear low-position interface 3, and the other end is detachably and fixedly connected to the air inlet of the front low-position interface 3. One end of the right air guide tube 2 is fixedly connected to the air inlet of the rear high-position interface 4, and the other end is detachably and fixedly connected to the air outlet of the front high-position interface 4.

[0035] In one embodiment, the detection device includes a pollutant data collector 7 and a temperature and humidity data collector 8. Both are embedded in the front wall of the standardized detection chamber 1. The probes of the pollutant data collector 7 and the temperature and humidity data collector 8 are located inside the standardized detection chamber 1. The pollutant data collector 7 and the temperature and humidity data collector 8 monitor relevant data of the polluted air inside the standardized detection chamber 1 through their respective probes. A gas flow meter 9 is installed inside the front standardized detection chamber 1, located on the high-level interface 4. The probe of the gas flow meter 9 is located inside the air inlet of the high-level interface 4. The pollutant data collector 7 includes at least one of a PM2.5 detector, a formaldehyde detector, a benzene detector, and a ketone detector, which can be flexibly selected and set according to the specific requirements of the gas to be detected.

[0036] The top of the standardized testing box 1 is an open structure and is equipped with a top cover. One side of the top cover is hinged to the standardized testing box 1, and the other side is fixedly connected to the standardized testing box 1 by a buckle. The top cover seals the standardized testing box 1. Sealing rings are provided at the positions on the front side of the standardized testing box 1 where it mates with the probe.

[0037] The standardized testing chamber 1 on the front side is equipped with an air pump 10. The air inlet of the air pump 10 is sealed and connected to the air outlet of the front low-position interface 3. The front low-position interface 3 is equipped with an air suction hood 12. The air suction hood 12 is detachably connected to the air inlet of the front low-position interface 3. The air suction hood 12 has a removable and replaceable filter membrane 11 inside. The filter membrane 11 filters large particles that enter the air suction hood 12.

[0038] In operation, the suction pump 10 draws indoor polluted air into the standardized detection chamber 1 at the front through the suction hood 12 and the front low-position interface 3. Simultaneously, it discharges the existing air from the standardized detection chamber 1 through the front high-position interface 4. Once the standardized detection chamber 1 is full of indoor polluted air, the pollutant data acquisition device 7 stabilizes. The valves of the front low-position interface 3 and the front high-position interface 4 are then closed, and the suction pump 10 is turned off. Next, the suction hood 12 is removed, and the other end of the left air guide pipe 2 is connected to the air inlet of the front low-position interface 3. Simultaneously, the other end of the right air guide pipe 2 is connected to the air outlet of the front high-position interface 4. The suction pump 10 is then turned on, forming a closed loop between the two standardized detection chambers 1 and the two air guide pipes 2.

[0039] In one embodiment, the mixing device includes a central fan control unit 6 and four fans 5. The central fan control unit 6 is located on the outer wall of the standardized testing chamber 1, and the blades of the fans 5 are made of metal. The four fans 5 are located inside the standardized testing chamber 1, with two fans 5 spaced apart and installed at the upper rear side of the standardized testing chamber 1, and the other two fans 5 spaced apart and installed at the lower front side of the standardized testing chamber 1. The signal ports of all four fans 5 are communicatively connected to the central fan control unit 6, which controls the operating status of each of the four fans 5. When the four fans 5 are turned on, they can accelerate the gas flow inside the standardized testing chamber 1, making the polluted air mix evenly with the air inside the rear of the standardized testing chamber 1, thus ensuring the accuracy of the monitoring data.

[0040] The standardized testing chamber 1 at the rear is equipped with a filter paper 13 and a sample tray 15. Both the filter paper 13 and the sample tray 15 are made of transparent hard glass. The sample tray 15 is placed horizontally and installed at the bottom of the standardized testing chamber 1, while the filter paper 13 is placed horizontally above the sample tray 15.

[0041] Specifically, the interior of the standardized testing chamber 1 is provided with two protruding support strips, which are symmetrically fixed on the inner walls of the left and right sides of the standardized testing chamber 1. The filter paper 13 has several regularly opened through holes, and its left and right sides are attached to the upper surface of the two protruding support strips. The two protruding support strips support the filter paper 13, so that the filter paper 13 is kept horizontal in the rear of the standardized testing chamber 1. The filter paper 13 is used to place glass fiber filter paper.

[0042] The working principle or general process of a rapid and accurate air pollutant purification and detection system is as follows: First, the mixing device and the detection device are installed on a standardized detection chamber 1 to form a material detection chamber. One end of each of the two air guide tubes 2 is connected to the low-position interface 3 and the high-position interface 4 of the material detection chamber, respectively. After opening the top cover of the material detection chamber and placing the detection material, the valves of the top cover, low-position interface 3, and high-position interface 4 are closed. If the detection material is a liquid, a filter paper 13 needs to be installed, and the filter paper with the experimental material evenly coated on it is fixed on the filter paper 13. If the detection object is a gel or solid material, the detection sample is evenly placed on the sample tray 15.

[0043] The same mixing and testing devices are installed on another standardized testing box 1, and an air pump 10 is installed inside the standardized testing box 1. At the same time, an air suction hood 12 with a filter membrane 11 on the inner side is installed on the low-position interface 3 of the standardized testing box 1, and a gas collection box is assembled. The top cover of the gas collection box and the valves of the low-position interface 3 and the high-position interface 4 of the gas collection box are closed.

[0044] Transfer the assembled gas collection box and material testing box to an indoor environment with air pollutants. Open the valves of the low-level interface 3 and high-level interface 4 of the gas collection box and start the air intake pump 10. The air pollutants in the indoor environment will continuously enter the gas collection box until the data measured by the pollutant data collector 7 is stable. This indicates that the original gas in the gas collection box has been completely replaced by the indoor air containing pollutants. At this time, close the valves of the air intake pump 10 and the low-level interface 3 and high-level interface 4 of the gas collection box. Then, remove the air intake cover 12 of the low-level interface 3 of the gas collection box.

[0045] Next, the other ends of the two air ducts 2 are connected to the low-level interface 3 and the high-level interface 4 of the gas collection box, respectively. After the connection is completed, the rapid and accurate air pollutant purification and detection system is formed. The concentration of air pollutants in the gas collection box is recorded at this time. The low-level interface 3 and the high-level interface 4 of the gas collection box are connected to the low-level interface 3 and the high-level interface 4 of the material detection box through the two air ducts 2, respectively, to form an air circulation system. The intake pump 10 of the gas collection box is turned on in sequence, as well as the valves and the main fan control 6 at all low-level interfaces 3 and high-level interfaces 4. The air pollutants in the gas collection box are mixed with the air in the material detection box and continuously circulated. When the data of the pollutant data acquisition devices 7 of the two boxes are basically the same and no longer change, the pollutant concentration, temperature, humidity and airflow speed are recorded at this time. Theoretically, under the temperature, humidity and airflow speed conditions at this time, the purification efficiency per unit space of the detected material can be obtained.

[0046] For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0048] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An air pollutant purification and detection system, characterized in that, It includes a standardized testing chamber (1) and two air ducts (2). There are two standardized testing chambers (1), which can be interchanged. The same mixing device and testing device are installed inside each standardized testing chamber (1). The two standardized testing chambers (1) are arranged one in front of the other. Each standardized testing chamber (1) has a low-position interface (3) with a valve on the lower left side wall and a high-position interface (4) with a valve on the upper right side wall. The valves of the low-position interface (3) and the high-position interface (4) are located outside the standardized testing chamber (1). Two air guide tubes (2) are located on the left and right sides of the standardized testing box (1). One end of the air guide tube (2) on the left side is fixedly connected to the air outlet of the low-position interface (3) on the rear side, and the other end is detachably connected to the air inlet of the low-position interface (3) on the front side. One end of the air guide tube (2) on the right side is fixedly connected to the air inlet of the high-position interface (4) on the rear side, and the other end is detachably connected to the air outlet of the high-position interface (4) on the front side. The mixing device includes a fan control unit (6) and four fans (5). The fan control unit (6) is located on the outer wall of the standardized testing box (1). The four fans (5) are located inside the standardized testing box (1). Two fans (5) are installed at intervals on the upper rear side of the standardized testing box (1), and the other two fans (5) are installed at intervals on the lower front side of the standardized testing box (1). The signal ports of the four fans (5) are all connected to the fan control unit (6). The detection device includes a pollutant data acquisition device (7) and a temperature and humidity data acquisition device (8). The pollutant data acquisition device (7) and the temperature and humidity data acquisition device (8) are fixed on the front side wall of the standardized detection box (1) in an embedded manner. The probes of the pollutant data acquisition device (7) and the temperature and humidity data acquisition device (8) are located inside the standardized detection box (1). A gas flow meter (9) is installed inside the front standardized detection box (1). The gas flow meter (9) is installed on the front high-level interface (4). The probe of the gas flow meter (9) is located inside the air inlet of the high-level interface (4). The standardized testing box (1) on the front side is equipped with an air pump (10). The air inlet of the air pump (10) is sealed to the air outlet of the front low-position interface (3). The front low-position interface (3) is equipped with an air suction hood (12). The air suction hood (12) is detachably connected to the air inlet of the front low-position interface (3). The air suction hood (12) has a detachable and replaceable filter membrane (11) inside. The standardized testing chamber (1) on the rear side is equipped with a filter paper (13) and a sample tray (15). The sample tray (15) is installed at the bottom of the standardized testing chamber (1), and the filter paper (13) is horizontally set above the sample tray (15). The standardized testing box (1) has a protruding support strip fixed on its side wall. The protruding support strip is provided with a detachable horizontally placed filter paper (13), which is used to place glass fiber filter paper. Each standardized testing chamber (1) is equipped with a sample tray (15), which can be placed horizontally on the lower inner side of the standardized testing chamber (1).

2. The air pollutant purification and detection system according to claim 1, characterized in that, The standardized testing box (1) has a cubic structure and an internal volume of 0.1 m³. 3 The bottom plate and four side walls of the standardized testing box (1) are made of transparent glass material, and a steel frame is fixedly installed on its inner side. Each of the four corners of the bottom of the standardized testing box (1) is provided with a caster wheel (14).

3. The air pollutant purification and detection system according to claim 1, characterized in that, The top of the standardized testing box (1) is an open structure and is equipped with a top cover. One side of the top cover is hinged to the standardized testing box (1), and the other side is fixedly connected to the standardized testing box (1) by a buckle. The top cover seals the standardized testing box (1). A sealing ring is provided at the position on the front side of the standardized testing box (1) where it cooperates with the probe.

4. The air pollutant purification and detection system according to claim 1, characterized in that, The standardized testing box (1) has two protruding support bars inside. The two protruding support bars are symmetrically fixed on the inner walls of the left and right sides of the standardized testing box (1). The filter paperboard (13) is laid on the upper surface of the two protruding support bars on the left and right sides.

5. The air pollutant purification and detection system according to claim 1, characterized in that, The pollutant data collector (7) includes at least one of a PM2.5 detector, a formaldehyde detector, a benzene detector, and a ketone detector.

6. The air pollutant purification and detection system according to claim 1, characterized in that, The air duct (2) is a transparent silicone tube, the filter paper (13) and the sample tray (15) are both made of transparent hard glass material, and the blades of the fan (5) are metal blades.

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