Ambient air detection device

Abstract

The invention relates to the technical field of air detection, in particular to an ambient air detection device which comprises a plurality of corrugated sampling pipes, the corrugated sampling pipes are connected with one another, and each corrugated sampling pipe can stretch out and draw back, so that during storage and transportation, the corrugated sampling pipes can be adjusted to be in a compressed state, and the sampling efficiency is improved. The overall size is reduced, so that the transportation difficulty and the storage space requirement are effectively reduced, and the carrying convenience is improved; a sealing cavity is formed in each corrugated sampling pipe, the adjacent sealing cavities are not communicated with each other, a sampling assembly is inserted into each corrugated sampling pipe, and the sampling assemblies are configured to be capable of guiding air in an external environment into the sealing cavities, so that when the air in a preset environment is sampled, the air in the preset environment is separated from the sealing cavities; according to the sampling device, each corrugated sampling pipe can be used for sampling independently without mutual interference, so that sampling samples can be mutually independent while a plurality of sampling points are sampled respectively, and the subsequent detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air detection, and in particular to an ambient air detection device. Background Art

[0002] In the field of air quality monitoring, air testing is a crucial technical means. Its core lies in the use of scientific methods to conduct comprehensive monitoring and detailed analysis of the types, concentrations and distribution of various pollutants in the air, aiming to accurately assess air quality and effectively predict its potential impact on human health.

[0003] In order to ensure that the air detection results are highly accurate and reliable, air sampling equipment is usually required to collect samples of the air in a preset environment. The collected samples are then transferred to a laboratory for in-depth detection and analysis using professional detection instruments and analysis methods. In related technologies, Chinese patent CN220872175U discloses an air detection sampling device, which installs an intake check valve and an exhaust check valve. When the second electric cylinder pushes the suction piston to inhale, the intake check valve opens and the exhaust check valve closes, so that external air can be sucked in. When exhausting, the intake check valve closes and the gas is discharged from the exhaust check valve. This cycle is repeated to draw the detection gas into a gas storage cylinder.

[0004] However, there are also some problems in the actual sampling process of the above-mentioned air detection sampling device. In order to obtain air samples with broad universality and sufficient theoretical basis, when sampling the same preset environment, it is necessary to perform sampling operations on multiple different sampling points separately, and because the samples at each sampling point should remain independent to avoid mixing between samples, thereby affecting the accuracy of the test results, it is necessary to be equipped with gas cylinders corresponding to the number of sampling points, and the gas cylinders themselves have a certain weight and volume, which brings many inconveniences in actual operation. On the one hand, when carrying a large number of gas cylinders to the detection site, it will significantly increase the burden on the staff and bring great difficulties to transportation and on-site operations; on the other hand, in the process of changing the sampling points, it is necessary to frequently replace new gas cylinders. This operation process is cumbersome and complicated, which not only consumes a lot of time and manpower, but also greatly affects the overall efficiency of air detection. Summary of the invention

[0005] Based on this, it is necessary to provide an ambient air detection device to address the problems of inconvenient operation, time-consuming, labor-intensive and low efficiency in the current air sampling process.

[0006] The above purpose is achieved through the following technical solutions: An ambient air detection device comprises a plurality of corrugated sampling tubes which are interconnected, each of which is capable of expansion and contraction and has a sealed chamber formed therein, adjacent sealed chambers are not interconnected, each of which is equipped with a sampling assembly, and the sampling assembly is configured to introduce air from the external environment into the sealed chamber.

[0007] Furthermore, the sampling assembly includes an adjusting member, an air inlet and a plurality of supporting parts. The adjusting member is inserted into the corrugated sampling tube and is located at a relatively convex portion of the inner side of the corrugated sampling tube. The adjusting member divides the sealed chamber into an air storage chamber and an air inlet chamber. The air inlet is arranged on the corrugated sampling tube and is connected to the air inlet chamber and the external environment at the same time. The plurality of supporting parts are divided into two groups. The two groups of supporting parts are arranged on the inner circumferential wall of the corrugated sampling tube and are located on both sides of the adjusting member and are configured to clamp the adjusting member. The adjusting member has The adjusting member is elastic and is configured to be switchable between a bowl-shaped form and a disc-shaped form. When the adjusting member is in the bowl-shaped form, the bowl mouth of the adjusting member faces the air inlet, and there is a gap between the adjusting member and the corrugated sampling tube, so that the air storage chamber and the air inlet chamber are connected, and the outside air can enter the air storage chamber through the air inlet, the air inlet chamber, and the gap between the adjusting member and the corrugated sampling tube in sequence for storage; when the adjusting member is in the disc-shaped form, the adjusting member and the corrugated sampling tube are sealed and abutted to close the air storage chamber.

[0008] Furthermore, a limit assembly is provided on each of the adjusting members, and the limit assembly is configured to prevent the bowl mouth of the adjusting member from facing away from the air inlet.

[0009] Furthermore, the limit assembly is arranged on a side of the adjusting member close to the air inlet, and includes a plurality of limit plates, the plurality of limit plates are arranged circumferentially, one end of the limit plate away from the center of the adjusting member is hinged on the adjusting member, and the plurality of limit plates together form a closed structure when located in the same plane, and the closed structure can form a stop fit with the adjusting member.

[0010] Furthermore, a sealing ring is sleeved on the outer periphery of the adjusting member, the cross-sectional shape of the sealing ring is circular, and the cross-sectional circle diameter of the sealing ring is larger than the thickness of the adjusting member, and the sealing ring is elastic.

[0011] Furthermore, an air intake valve is provided in each of the air intake ports.

[0012] Furthermore, there are multiple air inlets on each of the corrugated sampling tubes, and they are arranged at intervals along the circumferential direction.

[0013] Furthermore, the adjusting member is arranged close to the adjacent corrugated sampling tube.

[0014] Furthermore, the corrugated sampling tube is elastic.

[0015] Furthermore, the ambient air detection device also includes a driving mechanism, and the driving mechanism is configured to provide a driving force for the extension and retraction of each of the corrugated sampling tubes.

[0016] The beneficial effects of the present invention are: The environmental air detection device provided by the present invention can reduce the overall volume by adjusting multiple corrugated sampling tubes to be in a compressed state during storage and transportation, thereby effectively reducing the difficulty of transportation and the storage space requirement, and significantly improving the convenience when carrying; when sampling the air of a preset environment, the sampling component can be used to enable each corrugated sampling tube to be sampled separately without interfering with each other, while being able to sample multiple sampling points separately, ensuring that each sampling sample can be independent of each other, thereby improving the accuracy of subsequent detection.

[0017] Furthermore, by setting the sampling component to include multiple air inlets, and the air inlets are arranged on the corrugated sampling tube, when in use, each corrugated sampling tube can use its own air inlet to inhale air, so that there will be no situation where one air inlet corresponds to multiple corrugated sampling tubes, thereby avoiding the problem of sample contamination due to repeated use of the air inlet during the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of an ambient air detection device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a driving mechanism of an ambient air detection device provided by an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of an ambient air detection device without a driving mechanism provided by an embodiment of the present invention; Figure 4 A schematic cross-sectional view of the ambient air detection device without a driving mechanism provided by an embodiment of the present invention; Figure 5 A schematic diagram of the three-dimensional structure of the adjustment member, the limit assembly and the sealing ring of the ambient air detection device provided by an embodiment of the present invention when assembled.

[0019] in: 1. Corrugated sampling tube; 101. Sealed chamber; 1011. Air storage chamber; 1012. Air intake chamber; 2. Sampling assembly; 201. Adjusting member; 202. Air inlet; 203. Supporting part; 3. Limiting assembly; 301. Limiting piece; 4. Sealing ring; 5. Driving mechanism; 501. Base; 502. Mounting ring; 503. Driving cylinder. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] like Figures 1 to 5 As shown, the ambient air detection device provided by the embodiment of the present invention is used to sample the air of a preset environment, and is configured to include a plurality of corrugated sampling tubes 1, the plurality of corrugated sampling tubes 1 are interconnected, each of the corrugated sampling tubes 1 is retractable, and a sealed chamber 101 is formed inside, and adjacent sealed chambers 101 are not connected to each other, and a sampling component 2 is inserted in each of the corrugated sampling tubes 1, and the sampling component 2 is configured to be able to introduce air from the external environment into the sealed chamber 101.

[0024] Specifically in this embodiment, the corrugated sampling tube 1 is horizontally arranged, and the number is set to three as an example. Figure 3 and Figure 4As shown, three corrugated sampling tubes 1 are arranged in a row, and the corrugated sampling tube 1 located on the far left is in a compressed state, and the corrugated sampling tubes 1 located in the middle and on the far right are in a stretched state. Optionally, the corrugated sampling tube 1 located on the far left and the corrugated sampling tube 1 located in the middle can be set as a tubular structure with a closed left end and an open right end to reduce materials and manufacturing costs, and the right end open structure of the corrugated sampling tube 1 located on the left is sealed and connected to the left end closed structure of the corrugated sampling tube 1 located in the middle during installation, and the corrugated sampling tube 1 located on the far right is set as a tubular structure with both ends closed to ensure the sealing of the sealed chamber 101.

[0025] Optionally, in order to facilitate the release of air samples stored in the sealed chamber 101, an air outlet is provided on each corrugated sampling tube 1, and the air outlet connects the sealed chamber 101 and the external environment at the same time, and an air outlet valve is provided at each air outlet, and the air outlet valve is in a closed state during sampling and in an open state during sampling.

[0026] During use, when storing and transporting the environmental air detection device, the three corrugated sampling tubes 1 can be adjusted to be in a compressed state to reduce the overall volume, thereby effectively reducing the difficulty of transportation and storage space requirements, and significantly improving the convenience of carrying.

[0027] When sampling the air of a preset environment, the sampling component 2 can be used to enable each corrugated sampling tube 1 to be sampled individually without interfering with each other. While being able to sample multiple sampling points separately, it is ensured that each sampling sample is independent of each other, which is beneficial to improving the subsequent detection accuracy.

[0028] When releasing the air sample in the corrugated sampling tube 1, the air outlet valve can be adjusted to be in an open state in sequence according to the set order, so that the air sample in the corrugated sampling tube 1 can be discharged in sequence to avoid mixing and affecting the subsequent detection accuracy.

[0029] Furthermore, the sampling assembly 2 is configured to include an adjusting member 201, an air inlet 202 and a plurality of supporting portions 203. The adjusting member 201 is inserted into the corrugated sampling tube 1 and is located at a relatively convex portion of the inner side of the corrugated sampling tube 1. The adjusting member 201 divides the sealed chamber 101 into an air storage chamber 1011 and an air inlet chamber 1012; the air inlet 202 is arranged on the corrugated sampling tube 1 and is connected to the air inlet chamber 1012 and the external environment at the same time; the plurality of supporting portions 203 are divided into two groups, and the two groups of supporting portions 203 are arranged on the inner circumferential wall of the corrugated sampling tube 1 and are located on both sides of the adjusting member 201 and are configured to clamp the adjusting member 201; the adjusting member 201 The section 201 is elastic and is configured to be able to switch between a bowl-shaped shape and a disc-shaped shape. When the adjusting member 201 is in the bowl-shaped shape, the bowl mouth of the adjusting member 201 faces the air inlet 202, and there is a gap between the adjusting member 201 and the corrugated sampling tube 1, so that the air storage chamber 1011 and the air inlet chamber 1012 are connected, and the outside air can enter the air storage chamber 1011 through the air inlet 202, the air inlet chamber 1012, and the gap between the adjusting member 201 and the corrugated sampling tube 1 in sequence for storage; when the adjusting member 201 is in the disc-shaped shape, the adjusting member 201 and the corrugated sampling tube 1 are sealed and abutted to close the air storage chamber 1011.

[0030] Specifically in this embodiment, taking the corrugated sampling tube 1 as an example, the number of the adjusting members 201 is set to three, and they are respectively inserted into the three corrugated sampling tubes 1 during installation. Figure 4 As shown, the adjusting member 201 is vertically arranged at the relatively convex part of the inner side of the corrugated sampling tube 1, and the adjusting member 201 can be positioned and sealed and clamped under the clamping action of the V-shaped structure formed by the relatively convex part of the inner side of the corrugated sampling tube 1. Taking the adjusting member 201 located in the middle as an example, the left side of the adjusting member 201 is the air storage chamber 1011, and the right side is the air intake chamber 1012. Optionally, the right end of the corrugated sampling tube 1 located on the far right can be opened to reduce materials and reduce the use cost.

[0031] The number of the support parts 203 can be set to eight, and they are evenly divided into two groups. The two groups of support parts 203 are respectively arranged at the relatively convex parts on the inner side of the corrugated sampling tube 1 corresponding to the adjusting member 201, and are respectively arranged on the two inner side walls of the V-shaped structure formed by the relatively convex parts on the inner side of the corrugated sampling tube 1, so as to facilitate the positioning and clamping of the adjusting member 201.

[0032] More specifically, the four support portions 203 of the same group can be arranged evenly along the circumferential direction to ensure that the adjusting member 201 can be evenly supported when subjected to forces from different directions, thereby avoiding displacement and deformation of the adjusting member 201 due to uneven force.

[0033] More specifically, the two groups of support portions 203 may be arranged to correspond to each other along the circumferential direction, so as to ensure that when the adjusting member 201 switches its form, the support portions 203 on both sides can cooperate to provide a consistent clamping force to the adjusting member 201 .

[0034] Optionally, the air inlet 202 and the support portion 203 located on the right side of the adjusting member 201 can be arranged on the side wall of the V-shaped structure formed by the relatively convex portion on the inner side of the same corrugated sampling tube 1 to avoid the air inlet 202 being far away from the adjusting member 201, resulting in a too long gas transmission path and affecting the sampling efficiency.

[0035] In addition, since the air inlet 202 and the corrugated sampling tube 1 are arranged in correspondence, when multi-point sampling is performed on the air of a preset environment, each corrugated sampling tube 1 is responsible for collecting air samples at a specific point, and the corresponding air inlet 202 only serves as the only channel for the corrugated sampling tube 1 to obtain external air. This is different from the traditional structure in which one air inlet 202 corresponds to multiple corrugated sampling tubes 1. This method effectively avoids the sample contamination problem that may be caused by repeated use of the air inlet 202 in a complex sampling process.

[0036] More specifically, under the traditional structure, as the number of sampling times increases, the previously collected air sample is likely to remain inside the air inlet 202. When a new air sample passes through, it is very easy to mix with the residual sample, thereby contaminating the subsequently collected samples, causing deviations in the detection results. In the above structure, each air inlet 202 only serves the corresponding single corrugated sampling tube 1. After one sampling is completed, the air inlet 202 completes its mission, and there is no risk of cross contamination, ensuring that each collected air sample can maintain its original pure state, providing a solid and reliable sample foundation for subsequent high-precision detection and analysis, thereby greatly improving the accuracy and reliability of the entire air detection process.

[0037] Optionally, the support portion 203 can be set as a spherical structure. In this way, when in contact with the adjusting member 201, the spherical structure can provide all-round contact points, effectively dispersing the pressure on the adjusting member 201. Compared with support structures of other shapes, the spherical support portion 203 can better adapt to its dynamic displacement when the adjusting member 201 changes shape due to the expansion and contraction of the corrugated sampling tube 1: due to the isotropy of the sphere, no matter in which direction the adjusting member 201 is subjected to force, the spherical support portion 203 can provide stable and uniform support, further enhancing the positioning and clamping effect of the adjusting member 201. In addition, the spherical structure is relatively simple in manufacturing process, which can reduce production costs, while reducing manufacturing errors caused by complex shapes and improving product consistency and stability.

[0038] Initially, the bellows sampling tube 1 is in a compressed state, the adjusting member 201 is in a bowl-shaped form, and the bowl mouth of the adjusting member 201 is arranged toward the air inlet 202. The distance between the relatively convex parts on the inner side of adjacent bellows sampling tubes 1 is relatively close. The more the relatively convex parts on the inner side of the bellows sampling tube 1 are convex, the greater the distance between the relatively convex parts on the inner side of the bellows sampling tube 1 and the adjusting member 201. As a result, a gap can appear between the adjusting member 201 and the bellows sampling tube 1, thereby allowing the air storage chamber 1011 to be connected to the air inlet chamber 1012.

[0039] During use, the corrugated sampling tube 1 is first stretched. At this time, due to the increase in the length of the corrugated sampling tube 1, on the one hand, the distance between the relatively convex parts of the inner sides of adjacent corrugated sampling tubes 1 is farther, and the less the relatively convex parts of the inner sides of the corrugated sampling tubes 1 are convex, the closer the distance between the relatively convex parts of the inner sides of the corrugated sampling tubes 1 and the adjusting member 201 is. At this time, under the support of the two groups of support parts 203, there is still a gap between the adjusting member 201 and the corrugated sampling tube 1. On the other hand, the volume of the corrugated sampling tube 1 is increased, and then the air pressure inside the corrugated sampling tube 1, that is, inside the air storage chamber 1011 is reduced, and a pressure difference will appear on both sides of the adjusting member 201. Under the action of the pressure difference, the outside air can enter the air storage chamber 1011 through the air inlet 202, the air inlet chamber 1012, and the gap between the adjusting member 201 and the corrugated sampling tube 1 for storage.

[0040] After the preset sampling time, the air pressure in the air storage chamber 1011 is basically the same as or close to the atmospheric pressure, and then the corrugated sampling tube 1 is compressed to a preset degree. After the compression is completed, there is still a gap between the adjusting member 201 and the corrugated sampling tube 1 under the support of the two groups of support parts 203, and since the tube length of the corrugated sampling tube 1 is reduced, the volume of the corrugated sampling tube 1 is reduced, and then the air pressure inside the corrugated sampling tube 1, that is, inside the air storage chamber 1011 increases, and then a pressure difference will appear on both sides of the adjusting member 201. Under the action of the pressure difference, the adjusting member 201 can switch from a bowl-shaped shape to a disc-shaped shape, and the length in the vertical direction will increase, so that it can be sealed and abutted against the inner circumferential wall of the corrugated sampling tube 1 to close the air storage chamber 1011, thereby completing the sampling operation.

[0041] After the above sampling operation is performed on the corrugated sampling tubes 1 located in the middle and on the right, the ambient air detection device is formed as follows: Figure 4 The form shown.

[0042] In some embodiments, a limiting component 3 is provided on each adjusting member 201, and the limiting component 3 is configured to prevent the bowl mouth of the adjusting member 201 from facing away from the air inlet 202. In this way, under the action of the limiting component 3, it is ensured that in the process of switching the shape of the corrugated sampling tube 1, it is avoided that the shape is first switched from the bowl shape to the disc shape, and then switched from the disc shape to the bowl shape, thereby avoiding the gap after the adjusting member 201 and the corrugated sampling tube 1 are sealed and abutted, so that the sealing of the air storage chamber 1011 can be ensured, and the leakage of air samples can be avoided, thereby greatly improving the stability and reliability of the entire ambient air detection device, and providing a solid guarantee for accurately obtaining air samples.

[0043] Furthermore, the limit assembly 3 is arranged on one side of the adjusting member 201 close to the air inlet 202, and is arranged to include a plurality of limit plates 301, the plurality of limit plates 301 are arranged circumferentially, one end of the limit plate 301 away from the center of the adjusting member 201 is hinged on the adjusting member 201, and the plurality of limit plates 301 together form a closed structure when they are located in the same plane, and the closed structure can form a stop fit with the adjusting member 201.

[0044] Specifically in this embodiment, Figure 5 As shown, the shape of the limiting plate 301 can be set to a fan-shaped structure, and the corner end is set toward the center of the adjusting member 201, and the arc end center of the limiting plate 301 is hinged on the adjusting member 201; the number of limiting plates 301 can be set to four, the four limiting plates 301 are an integrated structure, and when the four limiting plates 301 are located in the same plane, they can together form a disc-shaped structure, and adjacent limiting plates 301 can stop each other, so that the disc-shaped structure is in a stable state, so as to form a stop fit with the adjusting member 201 and prevent the bowl mouth of the adjusting member 201 from facing away from the air inlet 202.

[0045] In other embodiments, in order to further improve the sealing performance between the adjusting member 201 and the corrugated sampling tube 1, a sealing ring 4 is sleeved on the outer periphery of the adjusting member 201, the cross-sectional shape of the sealing ring 4 is circular, and the cross-sectional circular diameter of the sealing ring 4 is greater than the thickness of the adjusting member 201, and the sealing ring 4 is elastic. In this way, when the corrugated sampling tube 1 is in a stretched state and the adjusting member 201 is in a disc-shaped form, the relatively convex part of the inner side of the corrugated sampling tube 1 will form a special V-shaped structure. Under the pushing action of this structure, the sealing ring 4 can undergo a greater degree of elastic deformation due to its elasticity. This deformation enables the sealing ring 4 to fit tightly to the corrugated sampling tube 1, and then effectively fill the small gap that may exist between the two, thereby significantly enhancing the sealing performance between the adjusting member 201 and the corrugated sampling tube 1.

[0046] In other embodiments, considering the strict requirements of the air detection process on the purity of the sample, an air inlet valve is provided in each air inlet 202 .

[0047] Specifically in this embodiment, the air intake valve is in an open state during sampling, ensuring that the air of the preset environment can flow in smoothly to complete the sampling task; in other non-sampling periods, the air intake valve is always kept closed, effectively preventing the air of the non-preset environment from entering the air intake chamber 1012 through the air inlet 202, thereby eliminating the risk of sample contamination from the source.

[0048] When releasing the air sample in the corrugated sampling tube 1, Figure 4 As shown, the corresponding air outlet valves can be adjusted to be in an open state in the order of the right side and then the middle bellows sampling tubes 1, and then the corresponding bellows sampling tubes 1 are compressed. As the corresponding bellows sampling tubes 1 are compressed, the air sample inside the bellows sampling tubes 1 is discharged; as the bellows sampling tubes 1 are compressed, the regulating member 201 is gradually reset under the action of elasticity, and is restored together with the bellows sampling tubes 1 to the state shown in FIG. Figure 4 The status of the corrugated sampling tube 1 and the adjusting member 201 on the far left is shown to facilitate the next use.

[0049] In other embodiments, in order to further improve the sampling efficiency, it is set that there are multiple air inlets 202 on each corrugated sampling tube 1, and they are arranged at intervals along the circumference. Optionally, the number of air inlets 202 on each corrugated sampling tube 1 can be five. In this way, when the air of the preset environment enters the air inlet chamber 1012 under the action of the pressure difference, it can enter through five air inlets 202 at the same time, thereby improving the air intake efficiency, reducing the total air intake time, and improving the sampling efficiency.

[0050] In other embodiments, in order to ensure that enough air samples can be obtained, the adjustment member 201 is arranged close to the adjacent corrugated sampling tube 1. In this way, the volume occupied by the air storage chamber 1011 is much larger than the volume occupied by the air inlet chamber 1012, so that when the corrugated sampling tube 1 is stretched, the air pressure inside the air storage chamber 1011 can be reduced to a large extent, so that more air from the external environment can flow into the air storage chamber 1011 under the action of the pressure difference.

[0051] Specifically in this embodiment, Figure 4 As shown, the adjusting members 201 are all arranged on the right side so that the volume occupied by the air storage chamber 1011 is much larger than the volume occupied by the air intake chamber 1012 .

[0052] In other embodiments, in order to improve the convenience of operation, the corrugated sampling tube 1 is configured to be elastic. Thus, when the corrugated sampling tube 1 is stretched, the corrugated sampling tube 1 tends to shorten due to its own elasticity, thereby automatically realizing the switching of the shape of the adjusting member 201.

[0053] In other embodiments, in order to improve the degree of automation, the ambient air detection device further includes a driving mechanism 5 , and the driving mechanism 5 is configured to provide a driving force for the extension and retraction of each corrugated sampling tube 1 .

[0054] Specifically in this embodiment, the driving mechanism 5 is configured to include a base 501 whose number is one more than the number of the corrugated sampling tubes 1, a mounting ring 502 whose number is twice the number of the corrugated sampling tubes 1, and a plurality of driving cylinders 503 whose number is equal to the number of the corrugated sampling tubes 1. The plurality of bases 501 are arranged side by side along the tube length direction of the corrugated sampling tube 1, and a telescopic structure is formed between adjacent bases 501; the plurality of mounting rings 502 are arranged in groups of two, and the plurality of mounting rings 502 are arranged at intervals along the tube length direction of the corrugated sampling tube 1, and the two mounting rings 502 of the same group are respectively fixedly arranged on two adjacent bases 501, and the axis of the mounting ring 502 is along the tube length direction of the corrugated sampling tube 1. The corrugated sampling tube 1 extends in the tube length direction. The corrugated sampling tube 1 is inserted into the mounting ring 502 during installation. The two ends of the corrugated sampling tube 1 respectively form a stop fit with the two mounting rings 502 of the same group; the driving cylinders 503 of the same group are respectively arranged between the two mounting rings 502 of the same group. Taking the driving cylinders 503 of the same group as an example, the cylinder body of the driving cylinder 503 is arranged on one of the mounting rings 502 of the same group, and the output shaft of the driving cylinder 503 is arranged on the other mounting ring 502 of the same group, so that when the output shaft of the driving cylinder 503 is extended or retracted, the corrugated sampling tube 1 can be synchronously driven to stretch or compress.

[0055] Optionally, each group of driving cylinders 503 may be provided with six in number and arranged in the circumferential direction.

[0056] Optionally, the driving cylinder 503 can be configured as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0057] For example, the number of the corrugated sampling tubes 1 is three. Figure 1 and Figure 2As shown, the driving mechanism 5 is configured to include four bases 501, six mounting rings 502 and three groups of driving cylinders 503. The four bases 501 are arranged side by side along the tube length direction of the corrugated sampling tube 1, and a telescopic structure is formed between adjacent bases 501; the six mounting rings 502 are grouped in pairs, and three groups are arranged at intervals along the tube length direction of the corrugated sampling tube 1. The two mounting rings 502 in the same group are respectively fixedly arranged on two adjacent bases 501, and the axis of the mounting ring 502 extends along the tube length direction of the corrugated sampling tube 1. The corrugated sampling tube 1 is During installation, it is inserted into the mounting ring 502, and the two ends of the corrugated sampling tube 1 respectively form a stop fit with the two mounting rings 502 of the same group; the driving cylinders 503 of the same group are respectively arranged between the two mounting rings 502 of the same group. Taking the same group of driving cylinders 503 as an example, the cylinder body of the driving cylinder 503 is arranged on the mounting ring 502 on the left, and the output shaft of the driving cylinder 503 is vertically arranged on the mounting ring 502 on the right, so that when the output shaft of the driving cylinder 503 is extended or retracted, it can synchronously drive the corrugated sampling tube 1 to stretch or compress.

[0058] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it should not be understood as an obstacle to the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An ambient air detection device, characterized in that: The ambient air detection device includes a plurality of corrugated sampling tubes, which are interconnected. Each of the corrugated sampling tubes is capable of expansion and contraction, and a sealed chamber is formed inside the tube. Adjacent sealed chambers are not interconnected. A sampling assembly is inserted into each of the corrugated sampling tubes, and the sampling assembly is configured to introduce air from the external environment into the sealed chamber.

2. The ambient air detection device according to claim 1, characterized in that: The sampling assembly comprises an adjusting member, an air inlet and a plurality of supporting parts. The adjusting member is inserted into the corrugated sampling tube and is located at a relatively convex part of the inner side of the corrugated sampling tube. The adjusting member divides the sealed chamber into an air storage chamber and an air inlet chamber. The air inlet is arranged on the corrugated sampling tube and is connected to the air inlet chamber and the external environment at the same time. The plurality of supporting parts are divided into two groups. The two groups of supporting parts are arranged on the inner peripheral wall of the corrugated sampling tube and are located on both sides of the adjusting member and are configured to clamp the adjusting member. The adjusting member is elastic. And it is configured to be able to switch between a bowl-shaped form and a disc-shaped form. When the adjusting member is in the bowl-shaped form, the bowl mouth of the adjusting member faces the air inlet, and there is a gap between the adjusting member and the corrugated sampling tube, so that the air storage chamber and the air inlet chamber are connected, and the outside air can enter the air storage chamber through the air inlet, the air inlet chamber, and the gap between the adjusting member and the corrugated sampling tube in sequence for storage; when the adjusting member is in the disc-shaped form, the adjusting member and the corrugated sampling tube are sealed and abutted to close the air storage chamber.

3. The ambient air detection device according to claim 2, characterized in that: A limit assembly is provided on each of the adjusting members, and the limit assembly is configured to prevent the bowl mouth of the adjusting member from facing away from the air inlet.

4. The ambient air detection device according to claim 3, characterized in that: The limiting assembly is arranged on a side of the adjusting member close to the air inlet, and includes a plurality of limiting plates, which are arranged circumferentially, and one end of the limiting plate away from the center of the adjusting member is hinged on the adjusting member, and when the plurality of limiting plates are located in the same plane, they together form a closed structure, and the closed structure can form a stop fit with the adjusting member.

5. The ambient air detection device according to claim 2, characterized in that: A sealing ring is sleeved on the outer periphery of the adjusting member. The cross-sectional shape of the sealing ring is circular, and the cross-sectional diameter of the sealing ring is greater than the thickness of the adjusting member. The sealing ring is elastic.

6. The ambient air detection device according to claim 2, characterized in that: An air intake valve is arranged in each of the air intake ports.

7. The ambient air detection device according to claim 2, characterized in that: There are multiple air inlets on each of the corrugated sampling tubes, and they are arranged at intervals along the circumferential direction.

8. The ambient air detection device according to claim 2, characterized in that: The adjusting member is arranged close to the adjacent corrugated sampling tube.

9. The ambient air detection device according to claim 1, characterized in that: The corrugated sampling tube is elastic.

10. The ambient air detection device according to claim 1, characterized in that: The ambient air detection device further comprises a driving mechanism, which is configured to provide a driving force for extending and retracting each of the corrugated sampling tubes.

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