Absorption device for sampling ambient air and waste gas

Abstract

The invention discloses an absorption device for sampling ambient air and waste gas, which is characterized by comprising a movable base, one side of the end part of the movable base is provided with an absorption tank assembly capable of absorbing air and waste gas at different heights, and the other side of the end part of the movable base is provided with an air extraction assembly for extracting air. Air extraction is conducted from one side of the sealing tank through the air extraction assembly, at the moment, air, waste gas and the like in the external environment enter the sealing tank through the air suction pipes, the air suction area of the air suction pipes can be increased by pulling the extension inserting sleeves at the ends of the air suction pipes, and meanwhile the multiple air suction pipes are arranged on one side of the sealing tank and can suck air and waste gas at multiple heights at the same time; when air, waste gas and the like pass through the absorption medium in the sealing tank, substances in the air, the waste gas and the like can be enriched, sampling of unit air and unit waste gas is completed, and meanwhile, due to the fact that air and waste gas at multiple heights are absorbed at the same time, it can be avoided that some suspended solids and floating objects are layered in the air and the waste gas, and the sample accuracy is affected.

Description

Technical Field

[0001] This invention relates to the field of gas sampling technology, and more specifically to an absorption device for sampling ambient air and exhaust gas. Background Technology

[0002] Gas sampling is the process of collecting samples of pollutants or contaminated air from the atmosphere. There are two main types of sampling methods: one involves passing a large volume of air through a liquid or solid absorbent to concentrate pollutants at lower concentrations, such as the air extraction method or membrane filtration method. The other method involves collecting air containing pollutants using containers (glass bottles, plastic bags, etc.). The former measures the average concentration of pollutants in the atmosphere over a sampling period; the latter measures the instantaneous concentration or the average concentration over a short period.

[0003] The sampling method should be determined based on the purpose of sampling and the site conditions. In the case of large-scale environmental sampling, since container sampling can only measure instantaneous concentration or average concentration over a short period of time, and the sample is prone to error, most ambient air exhaust gas sampling uses absorption devices for sampling.

[0004] Existing absorption devices for ambient air and exhaust gas sampling still have certain problems in practical applications:

[0005] 1. Most existing absorption devices have a fixed suction position. In actual use, they cannot collect air and exhaust gas at different heights in the environment at the same time. When faced with some floating objects, suspended objects, dust and other substances that are prone to stratification in the environment, the fixed suction height cannot fully reflect the true content of each substance in the ambient air and exhaust gas, thus affecting the accuracy of sampling.

[0006] 2. Most absorption devices, when in use, concentrate substances in the air before detecting them. There is no control group that can be used for physical comparison. Most existing absorption devices for sampling do not have components for collecting air in the same environment. If air needs to be collected, gas collection must be carried out again. During this process, changes in the collection location and collection time will affect the control sample, which is not conducive to sampling operation and subsequent detection. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an absorption device for sampling ambient air and exhaust gas. It solves the problems of existing absorption devices, most of which have a fixed suction height. In practical use, this makes it impossible to simultaneously collect air and exhaust gas at different heights in the environment. When dealing with substances that easily stratify in the environment, such as floating objects, suspended particles, and dust, a fixed suction height cannot accurately reflect the content of various substances in the ambient air and exhaust gas, thus affecting the accuracy of sampling. Furthermore, most absorption devices, because they enrich substances in the air before detection, lack a control group for physical comparison. Most existing sampling absorption devices do not have components for collecting air from the same environment. If air collection is required, gas collection must be performed again. During this process, variations in collection location and time will affect the control sample, which is detrimental to sampling operations and subsequent detection.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0009] An absorption device for sampling ambient air and exhaust gas includes a movable base. An absorption tank assembly capable of absorbing air and exhaust gas at different heights is provided on one side of the movable base end. An air extraction assembly for extracting air is provided on the other side of the movable base end, and the end of the air extraction assembly is connected to the absorption tank assembly. A control sampling device is provided at the end of the absorption tank assembly.

[0010] The absorption tank assembly includes a buffer base, a sealed tank, an absorption medium, an air intake pipe, and an extension sleeve. The buffer base is fixedly installed on one side of the end of the movable base. The sealed tank is installed at the end of the buffer base. The absorption medium is installed inside the sealed tank. Multiple air intake pipes are arranged in a group and are arranged parallel to each other from top to bottom on the outside of the side wall of the sealed tank. The extension sleeve is movably inserted into the outside of the end of the air intake pipe.

[0011] By adopting the above technical solution, through the combined action of the buffer base, sealed container, absorption medium, suction pipe, and extension sleeve, air is drawn from one side of the sealed container via the suction assembly during use. At this time, air and exhaust gas from the outside environment will enter the sealed container through the suction pipe. By pulling the extension sleeve at the end of the suction pipe, the suction area of ​​the suction pipe can be increased. At the same time, multiple suction pipes on one side of the sealed container can simultaneously draw in air and exhaust gas from multiple heights. When the air and exhaust gas pass through the absorption medium in the sealed container, the substances in it can be enriched, completing the sampling of a unit of air and exhaust gas. Furthermore, because air and exhaust gas are drawn in from multiple heights simultaneously, the stratification of some suspended and floating matter in the air and exhaust gas can be avoided, which would affect the accuracy of the sample, making it more practical.

[0012] Preferably, the sealed container is divided into multiple layers, and each of the multiple layers of the sealed container is connected to multiple air intake pipes. Each of the multiple layers of the sealed container is provided with a sealing door that can be opened and closed on its side wall.

[0013] By adopting the above technical solution, and through the layering inside the sealed container, air samples drawn in by suction tubes at different heights can be enriched in different layers inside the sealed container. When testing samples later, more data can be obtained by comparing samples at different heights.

[0014] Preferably, the air extraction assembly includes a mounting housing, a turbine fan, a filter cartridge, and a connecting pipe. The mounting housing is vertically fixed at the end of the movable base, the turbine fan is located at the end of the mounting housing, the filter cartridge is located inside the mounting housing, and the connecting pipe is located outside the side wall of the mounting housing, with its end connected to a sealed container.

[0015] By adopting the above technical solution, the operation of the turbine fan creates suction inside the housing, and the gas is drawn into the sealed container through the connecting pipe, thus completing the gas extraction process.

[0016] Preferably, the end of the connecting pipe is connected to the side wall of the multi-layer tank body of the sealing tank through multiple pipes, and the connection between the connecting pipe and the sealing tank is on the side away from the suction pipe.

[0017] By adopting the above technical solution, the connecting pipe is connected to the side wall of the multi-layer tank of the sealed tank through multiple pipes, which can form the same suction intensity among the multi-layer tank of the sealed tank when the gas extraction component extracts gas, thus ensuring the same amount of gas extracted per unit time.

[0018] Preferably, the control collection device includes a display stand, a vacuum pump, a gas storage cylinder, and an external connecting pipe. The display stand is located at the end of the sealed container, the vacuum pump is located inside the display stand, the gas storage cylinder is located outside the side wall of the display stand, and the bottom end of the gas storage cylinder is connected to the vacuum pump through a pipe. The external connecting pipe is located at the other end of the gas storage cylinder.

[0019] By adopting the above technical solution, an air pump is used to draw air, allowing outside air to enter the gas storage cylinder through an external pipe. An air sample from the same time and location is stored in the gas storage cylinder, which can provide a physical comparison for later sample testing.

[0020] Preferably, the outer connecting pipe includes a glass tube and a flexible tube disposed at the end of the glass tube, the glass tube portion of the outer connecting pipe being inserted into the top of the gas storage cylinder, and the flexible tube portion of the outer connecting pipe being able to move freely at the end of the glass tube.

[0021] By adopting the above technical solution, the height of the gas being drawn by the air pump can be controlled by adjusting the position of the hose through the external pipe, thereby improving the accuracy of air sample extraction.

[0022] Preferably, a mounting bracket is provided on the outer side wall of the display platform, the gas storage cylinder is inserted into the mounting bracket, the glass tube portion of the outer connecting pipe is inserted into the end of the mounting bracket, and the glass tube portion of the outer connecting pipe can move up and down at the end of the mounting bracket.

[0023] By adopting the above technical solution, the gas cylinder and external connecting pipe can be better placed by installing the bracket. At the same time, after the glass tube part of the external connecting pipe is raised, the gas cylinder can be removed for sealing and storage, thus preserving the sample inside the gas cylinder.

[0024] Preferably, the movable base includes a load-bearing base, movable casters, and reinforcing ribs. The load-bearing base is a square base, the movable casters are located at the four corners of the bottom of the load-bearing base, and the reinforcing ribs are located inside the load-bearing base and below the absorption tank assembly and the air extraction assembly.

[0025] By adopting the above technical solution, the entire device can be moved in the environment via the casters at the bottom of the load-bearing base, which facilitates the movement of the device during sampling and allows for better sampling in air and exhaust gas. At the same time, the reinforcing ribs inside the load-bearing base can better support the absorption tank assembly and the extraction assembly.

[0026] In summary, the present invention has the following main beneficial effects:

[0027] 1. During use, air is drawn from one side of the sealed container using the suction assembly. At this time, air and exhaust gas from the outside environment will enter the sealed container through the suction pipe. By pulling the extension sleeve at the end of the suction pipe, the suction area of ​​the suction pipe can be increased. At the same time, multiple suction pipes on one side of the sealed container can simultaneously draw in air and exhaust gas from multiple heights. When the air and exhaust gas pass through the absorption medium inside the sealed container, the substances in it can be enriched, completing the sampling of a unit of air and exhaust gas. At the same time, because air and exhaust gas are drawn in from multiple heights at the same time, it can avoid the stratification of some suspended and floating objects in the air and exhaust gas, which would affect the accuracy of the sample.

[0028] 2. Use an air pump to draw in outside air through an external pipe into the gas cylinder, leaving an air sample in the cylinder at the same time and location, which can provide a physical comparison for later sample testing. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0031] Figure 3 This is a structural schematic diagram from another perspective of the present invention;

[0032] Figure 4 This is a front view of the present invention;

[0033] Figure 5 This is a top view of the present invention;

[0034] Figure 6 yes Figure 5 Structural cross-sectional view along the BB direction;

[0035] Figure 7 yes Figure 6 Enlarged view of the structure at point C.

[0036] Reference numerals: 1. Movable base; 101. Load-bearing seat; 102. Movable casters; 103. Reinforcing rib; 2. Absorption tank assembly; 201. Buffer pad; 202. Sealed tank; 203. Absorption medium; 204. Suction pipe; 205. Extension sleeve; 3. Vacuum assembly; 301. Mounting housing; 302. Turbine fan; 303. Filter cartridge; 304. Connecting pipe; 4. Comparison and collection device; 401. Display stand; 402. Vacuum pump; 403. Gas storage cylinder; 404. External connecting pipe; 5. Sealed door; 6. Mounting bracket. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 An absorption device for sampling ambient air and exhaust gas includes a movable base 1, an absorption tank assembly 2 capable of absorbing air and exhaust gas at different heights is provided on one side of the movable base 1, an extraction assembly 3 for extracting air is provided on the other side of the movable base 1, and the end of the extraction assembly 3 is connected to the absorption tank assembly 2, and a reference collection device 4 is provided at the end of the absorption tank assembly 2.

[0040] The absorption tank assembly 2 includes a buffer base 201, a sealed tank 202, an absorption medium 203, an air intake pipe 204, and an extension sleeve 205. The buffer base 201 is fixedly installed on one side of the end of the movable base 1. The sealed tank 202 is installed at the end of the buffer base 201. The absorption medium 203 is installed inside the sealed tank 202. Multiple air intake pipes 204 are arranged in a group and are arranged parallel to each other from top to bottom on the outside of the side wall of the sealed tank 202. The extension sleeve 205 is movably inserted into the outside of the end of the air intake pipe 204.

[0041] The sealed container 202 is divided into multiple layers, and each of the multiple layers of the sealed container 202 is connected to multiple air intake pipes 204. Each of the multiple layers of the sealed container 202 is provided with a sealing door 5 that can be opened and closed.

[0042] The air extraction assembly 3 includes a mounting housing 301, a turbine fan 302, a filter cartridge 303, and a connecting pipe 304. The mounting housing 301 is vertically fixed at the end of the movable base 1. The turbine fan 302 is located at the end of the mounting housing 301. The filter cartridge 303 is located inside the mounting housing 301. The connecting pipe 304 is located outside the side wall of the mounting housing 301, and the end of the connecting pipe 304 is connected to the sealed container 202.

[0043] The end of the connecting pipe 304 is connected to the side wall of the multi-layer tank of the sealed tank 202 through multiple pipes, and the connection between the connecting pipe 304 and the sealed tank 202 is on the side away from the suction pipe 204.

[0044] In use, the turbine fan 302 creates suction inside the housing 301, and multiple pipes through the connecting pipe 304 connect to the side walls of the multi-layered tank of the sealed tank 202. This ensures that the suction intensity is uniform across the multi-layered tank of the sealed tank 202 during gas extraction by the suction assembly 3, guaranteeing a consistent amount of gas extracted per unit time. The suction assembly 3 extracts gas from one side of the sealed tank 202, allowing ambient air and exhaust gases to enter the sealed tank 202 through the suction pipe 204. Pulling the extension sleeve 205 at the end of the suction pipe 204 increases its suction area. Simultaneously, multiple suction pipes... On one side of the sealed container 202, 204 can simultaneously draw in air and exhaust gas from multiple heights. When the air and exhaust gas pass through the absorption medium 203 inside the sealed container 202, the substances in it can be enriched. Through the stratification inside the sealed container 202, the air samples drawn in by the suction pipes 204 at different heights can be enriched in different layers inside the sealed container 202, completing the sampling of a unit of air and exhaust gas. At the same time, because air and exhaust gas are drawn in from multiple heights at the same time, it can avoid the stratification of some suspended and floating objects in the air and exhaust gas, which would affect the accuracy of the sample. In addition, when testing samples later, more data can be obtained by comparing samples from different heights.

[0045] Example 2

[0046] Based on the above embodiment one, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The comparison and acquisition device 4 includes a display platform 401, a vacuum pump 402, a gas storage cylinder 403, and an external pipe 404. The display platform 401 is located at the end of the sealed container 202, the vacuum pump 402 is located inside the display platform 401, the gas storage cylinder 403 is located outside the side wall of the display platform 401, and the bottom end of the gas storage cylinder 403 is connected to the vacuum pump 402 through a pipe. The external pipe 404 is located at the other end of the gas storage cylinder 403.

[0047] The external connector 404 includes a glass tube and a flexible tube disposed at the end of the glass tube. The glass tube portion of the external connector 404 is inserted into the top of the gas cylinder 403, and the flexible tube portion of the external connector 404 can move freely at the end of the glass tube.

[0048] A mounting bracket 6 is provided on the outer side wall of the display stand 401. The gas storage cylinder 403 is inserted into the mounting bracket 6. The glass tube part of the outer pipe 404 is inserted into the end of the mounting bracket 6, and the glass tube part of the outer pipe 404 can move up and down at the end of the mounting bracket 6.

[0049] The movable base 1 includes a load-bearing base 101, casters 102, and reinforcing ribs 103. The load-bearing base 101 is a square base. The casters 102 are located at the four corners of the bottom of the load-bearing base 101. The reinforcing ribs 103 are located inside the load-bearing base 101 and are situated below the absorption tank assembly 2 and the air extraction assembly 3. Figure 1 As shown, the entire device can be moved in the environment by the casters 102 at the bottom of the support base 101, which makes it convenient to move the device during sampling and to better sample in the air and exhaust gas. At the same time, the reinforcing ribs 103 inside the support base 101 can better support the absorption tank assembly 2 and the air extraction assembly 3.

[0050] In use, the air pump 402 is used to draw air, allowing outside air to enter the gas storage cylinder 403 through the external connector 404. An air sample from the same time and location is stored in the gas storage cylinder 403, providing a physical comparison for later sample testing. By adjusting the position of the flexible hose through the external connector 404, the height of the gas drawn by the air pump 402 can be controlled, thus better controlling the accuracy of the air sample.

[0051] Working principle: Please refer to Figures 1-7As shown, during operation, the turbine fan 302 creates suction inside the housing 301, and multiple pipes 304 connect to the side walls of the multi-layered tank of the sealed tank 202, creating the same suction intensity across the multiple layers of the sealed tank 202. This ensures a consistent amount of gas extracted per unit time. Multiple suction pipes 204 on the other side of the sealed tank 202 can simultaneously draw in air and exhaust gas from multiple heights. When the air and exhaust gas pass through the absorption medium 203 inside the sealed tank 202, substances are enriched. Through the stratification inside the sealed tank 202, air samples drawn in by the suction pipes 204 at different heights are enriched in different layers within the sealed tank 202. The system collects and samples both air and exhaust gas. While the turbine fan 302 operates, the position of the hose section of the external connector 404 is adjusted, and the air pump 402 draws air in, allowing outside air to enter the gas storage cylinder 403. Air samples from the same time and location are stored in the gas storage cylinder 403. Because air and exhaust gas are sampled from multiple heights simultaneously, the stratification of suspended and floating particles in the air and exhaust gas can be avoided, thus preventing stratification and ensuring sample accuracy. Furthermore, the storage of air samples from the same time and location provides a physical reference for later sample testing, allowing for comparison of samples from different heights and the physical samples to obtain more data.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An absorption device for sampling ambient air and exhaust gas, characterized in that, include: Mobile base (1); Absorption tank assembly (2), the movable base (1) is provided with an absorption tank assembly (2) capable of absorbing air and exhaust gas at different heights on one side of the end; An air extraction assembly (3) is provided on the other side of the movable base (1) for air extraction, and the end of the air extraction assembly (3) is connected to the absorption tank assembly (2); A control collection device (4) is provided at the end of the absorption tank assembly (2); The absorption tank assembly (2) includes a buffer base (201), a sealed tank (202), an absorption medium (203), an air intake pipe (204), and an extension sleeve (205). The buffer base (201) is fixedly disposed on one side of the end of the movable base (1). The sealed tank (202) is disposed at the end of the buffer base (201). The absorption medium (203) is disposed inside the sealed tank (202). Multiple air intake pipes (204) are arranged in a group and are arranged parallel to each other from top to bottom outside the side wall of the sealed tank (202). The extension sleeve (205) is movably inserted into the outside of the end of the air intake pipe (204).

2. The absorption device for sampling ambient air and exhaust gas according to claim 1, characterized in that: The sealed container (202) is divided into multiple layers inside, and the multiple layers of the sealed container (202) are connected to multiple air intake pipes (204). Each layer of the sealed container (202) has a sealing door (5) that can be opened and closed on its side wall.

3. The absorption device for sampling ambient air and exhaust gas according to claim 1, characterized in that: The air extraction assembly (3) includes: The mounting housing (301) is fixedly installed on the movable base (1); A turbine fan (302) is disposed at the end of the mounting housing (301); A filter cartridge (303) is disposed inside the mounting housing (301); A connecting pipe (304) is disposed outside the side wall of the mounting housing (301), and the end of the connecting pipe (304) is connected to the sealed container (202).

4. The absorption device for sampling ambient air and exhaust gas according to claim 3, characterized in that: The end of the connecting pipe (304) is connected to the side wall of the multi-layer tank of the sealing tank (202) through multiple pipes, and the connection between the connecting pipe (304) and the sealing tank (202) is away from the side of the suction pipe (204).

5. The absorption device for sampling ambient air and exhaust gas according to claim 1, characterized in that: The control collection device (4) includes: Display stand (401), the display stand (401) is disposed at the end of the sealed container (202); An air pump (402) is installed inside the display stand (401); A gas storage cylinder (403) is installed outside the side wall of the display stand (401), and the bottom end of the gas storage cylinder (403) is connected to a vacuum pump (402) through a pipe. An external connector (404) is provided at the other end of the gas storage cylinder (403).

6. The absorption device for sampling ambient air and exhaust gas according to claim 5, characterized in that: The external connector (404) includes a glass tube and a flexible tube disposed at the end of the glass tube. The glass tube portion of the external connector (404) is inserted into the top of the gas cylinder (403), and the flexible tube portion of the external connector (404) can move freely at the end of the glass tube.

7. The absorption device for sampling ambient air and exhaust gas according to claim 6, characterized in that: An installation bracket (6) is provided on the outer side wall of the display platform (401). The gas storage cylinder (403) is inserted into the installation bracket (6). The glass tube part of the outer pipe (404) is inserted into the end of the installation bracket (6), and the glass tube part of the outer pipe (404) can move up and down at the end of the installation bracket (6).

8. The absorption device for sampling ambient air and exhaust gas according to claim 1, characterized in that: The mobile base (1) includes: A load-bearing base (101), wherein the load-bearing base (101) is a square base; Movable casters (102) are provided at the four corners of the bottom of the support base (101); A reinforcing rib (103) is provided inside the load-bearing seat (101) and is located below the absorption tank assembly (2) and the air extraction assembly (3).

Images