An ambient air detection device

Abstract

The present invention relates to the technical field of air detection, and particularly relates to an ambient air detection device. The ambient air detection device includes a plurality of corrugated sampling tubes which are connected to each other. Each corrugated sampling tube can be telescoped so that when in storage and transportation, the plurality of corrugated sampling tubes can be adjusted to be in a compressed state to reduce the overall volume, thereby effectively reducing the transportation difficulty and the storage space requirement and enhancing the portability. A sealed chamber is formed inside each corrugated sampling tube, and adjacent sealed chambers are not communicated with each other. A sampling assembly is inserted into each corrugated sampling tube. The sampling assembly is configured to be able to introduce the air in the external environment into the sealed chamber so that when sampling the air in a preset environment, each corrugated sampling tube can perform sampling independently without interference. While realizing sampling at multiple sampling points respectively, it is ensured that each sampling sample can be independent of each other, thereby improving the subsequent detection accuracy.

Description

Technical Field

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

[0002] In the field of air quality monitoring, air detection is a crucial technical means. Its core lies in using scientific methods to comprehensively monitor and meticulously analyze the types, concentrations, and distribution of various pollutants in the air, aiming to accurately evaluate air quality and effectively predict its potential impacts on human health.

[0003] To ensure the high accuracy and reliability of air detection results, air sampling equipment is usually required to collect air samples in a preset environment. Subsequently, the collected samples are transferred to a laboratory for in-depth detection and analysis using professional detection instruments and analytical methods. In related technologies, for example, Chinese Patent CN220872175U discloses an air detection sampling device. When the second electric cylinder pushes the suction piston to inhale air, the intake one-way valve opens and the exhaust one-way valve closes, allowing external air to be inhaled. When exhausting, the intake one-way valve closes and the gas is discharged from the exhaust one-way valve. This cycle can pump the detection gas into the gas storage cylinder.

[0004] However, there are also some problems in the actual sampling process of the above air detection sampling device. In order to obtain air samples with broad universality and sufficient theoretical basis, when sampling the same preset environment, sampling operations need to be carried out at multiple different sampling points respectively. And since the samples at each sampling point should be kept independent to avoid mutual mixing of samples, which may affect the accuracy of the detection results, gas storage cylinders corresponding to the number of sampling points need to be equipped. The gas storage cylinder itself has a certain weight and volume, which brings many inconveniences in actual operation. On the one hand, when carrying a large number of gas storage cylinders to the detection site, it will significantly increase the burden on the staff and cause great difficulties in transportation and on-site operation. On the other hand, during the process of changing sampling points, new gas storage cylinders need to be frequently replaced. This operation process is cumbersome and complex, not only consuming a large amount of time and manpower, but also greatly affecting the overall efficiency of air detection. Summary of the Invention

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

[0006] The above object is achieved by the following technical solutions:

[0007] An environmental air detection device, the environmental air detection device includes a plurality of corrugated sampling tubes, the plurality of corrugated sampling tubes are connected to each other, each of the corrugated sampling tubes can be telescoped, and a sealed chamber is formed inside each of them. The adjacent sealed chambers are not communicated with each other. A sampling assembly is inserted into each of the corrugated sampling tubes, and the sampling assembly is configured to be able to introduce the air in the external environment into the sealed chamber.

[0008] Further, the sampling assembly includes an adjusting member, an air inlet, and a plurality of supporting portions. The adjusting member is inserted into the corrugated sampling tube and is located at a relatively outwardly convex portion inside the corrugated sampling tube. The adjusting member divides the sealed chamber into a gas storage chamber and an air inlet chamber; the air inlet is arranged on the corrugated sampling tube and is simultaneously communicated with the air inlet chamber and the external environment; the plurality of supporting portions are divided into two groups, and the two groups of supporting portions 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 be able to clamp the adjusting member; the adjusting member has elasticity and is configured to be able to switch between a bowl shape and a disc shape. When the adjusting member is in the bowl shape, the bowl opening 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 gas storage chamber and the air inlet chamber are communicated, and the outside air can sequentially enter the gas storage chamber through the air inlet, the air inlet chamber, the gap between the adjusting member and the corrugated sampling tube for storage; when the adjusting member is in the disc shape, the adjusting member and the corrugated sampling tube are in sealed contact to close the gas storage chamber.

[0009] Further, a limiting assembly is arranged on each of the adjusting members, and the limiting assembly is configured to be able to prevent the bowl opening of the adjusting member from facing away from the air inlet.

[0010] Further, the limiting assembly is arranged on the side of the adjusting member close to the air inlet and includes a plurality of limiting pieces. The plurality of limiting pieces are arranged circumferentially. One end of the limiting piece away from the center of the adjusting member is hinged to the adjusting member. When the plurality of limiting pieces are in the same plane, they jointly form a closed structure, and the closed structure can form a stop fit with the adjusting member.

[0011] Further, 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 diameter of the cross-sectional circle of the sealing ring is greater than the thickness of the adjusting member. The sealing ring has elasticity.

[0012] Further, an air inlet valve is arranged in each of the air inlets.

[0013] Further, the number of the air inlets on each of the corrugated sampling tubes is multiple, and they are arranged at intervals circumferentially.

[0014] Further, the adjusting member is disposed adjacent to the adjacent corrugated sampling tube.

[0015] Further, the corrugated sampling tube is elastic.

[0016] Further, the ambient air detection device further includes a driving mechanism configured to provide a driving force for each corrugated sampling tube to expand and contract.

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

[0018] When the ambient air detection device provided by the present invention is stored and transported, the overall volume can be reduced by adjusting the plurality of corrugated sampling tubes to be in a compressed state, thereby effectively reducing the transportation difficulty and the storage space requirement, and significantly improving the convenience during carrying; when sampling the air in a preset environment, each corrugated sampling tube can be sampled independently through the sampling assembly without interference. While being able to separately sample multiple sampling points, it is ensured that each sampling sample can be independent of each other, improving the subsequent detection accuracy.

[0019] Further, by providing that the sampling assembly includes a plurality of air inlets, and the air inlets are disposed on the corrugated sampling tubes, so that when in use, each corrugated sampling tube can inhale air using its respective air inlet, thus there will be no situation where one air inlet corresponds to multiple corrugated sampling tubes, avoiding the problem of contaminating the sample due to the repeated use of the air inlet during the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective structural view of the ambient air detection device provided by an embodiment of the present invention;

[0021] Figure 2 is a perspective structural view of the driving mechanism of the ambient air detection device provided by an embodiment of the present invention;

[0022] Figure 3 is a perspective structural view of the ambient air detection device provided by an embodiment of the present invention with the driving mechanism removed;

[0023] Figure 4 is a sectional structural view of the ambient air detection device provided by an embodiment of the present invention with the driving mechanism removed;

[0024] Figure 5 is a perspective structural view of the adjusting member, the limiting assembly and the sealing ring of the ambient air detection device provided by an embodiment of the present invention during assembly.

[0025] Wherein:

[0026] 1. Corrugated sampling tube; 101. Sealed chamber; 1011. Gas storage chamber; 1012. Air inlet chamber;

[0027] 2. Sampling assembly; 201. Adjusting member; 202. Air inlet; 203. Support portion;

[0028] 3. Limiting assembly; 301. Limiting piece;

[0029] 4. Sealing ring;

[0030] 5. Driving mechanism; 501. Base; 502. Mounting ring; 503. Driving cylinder. Detailed implementation manner

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be 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.

[0032] The serial numbers assigned to the components in this article itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The terms "connection" and "coupling" mentioned in this article, unless otherwise specifically stated, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0033] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0034] Such as Figures 1 to 5As shown in the figure, the environmental air detection device provided by the embodiment of the present invention is used to sample the air in a preset environment, and is set to include a plurality of corrugated sampling tubes 1. The plurality of corrugated sampling tubes 1 are connected to each other. Each corrugated sampling tube 1 can be telescoped, and a sealed chamber 101 is formed inside each of them. The adjacent sealed chambers 101 are not communicated with each other. A sampling assembly 2 is inserted into each corrugated sampling tube 1. The sampling assembly 2 is configured to be able to introduce the air in the external environment into the sealed chamber 101.

[0035] Specifically, in this embodiment, taking the corrugated sampling tubes 1 being horizontally arranged and the number being three as an example, as Figure 3 and Figure 4 shown, the three corrugated sampling tubes 1 are arranged in a row. The corrugated sampling tube 1 located on the leftmost side is in a compressed state, and the corrugated sampling tubes 1 located in the middle and on the rightmost side are in a stretched state. Optionally, the corrugated sampling tube 1 located on the leftmost side 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 the material consumption and manufacturing cost. And when the corrugated sampling tube 1 on the left side is installed, the open right end structure is hermetically connected to the closed left end structure of the corrugated sampling tube 1 in the middle. The corrugated sampling tube 1 located on the rightmost side is set as a tubular structure with both ends closed to ensure the tightness of the sealed chamber 101.

[0036] Optionally, to facilitate the release of the air sample stored in the sealed chamber 101, it is set that an air outlet is provided on each corrugated sampling tube 1. The air outlet communicates with the sealed chamber 101 and the external environment at the same time, and an air outlet valve is provided at each air outlet. The air outlet valve is in a closed state during sampling and in an open state during sample release.

[0037] During the use process, 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 transportation difficulty and the storage space requirement, and significantly improving the convenience during carrying.

[0038] When sampling the air in the preset environment, each corrugated sampling tube 1 can be sampled separately through the sampling assembly 2 without interference. While being able to sample multiple sampling points separately, it is ensured that each sampling sample can be independent of each other, which is conducive to improving the subsequent detection accuracy.

[0039] 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 a 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.

[0040] Furthermore, the sampling assembly 2 is arranged to include an adjusting member 201, an air inlet 202 and a plurality of supporting parts 203. The adjusting member 201 is inserted into the corrugated sampling tube 1 and is located at a relatively convex part inside the corrugated sampling tube 1. The adjusting member 201 divides the sealing chamber 101 into a gas storage chamber 1011 and an air inlet chamber 1012; the air inlet 202 is arranged on the corrugated sampling tube 1 and is communicated with both the air inlet chamber 1012 and the external environment at the same time; the plurality of supporting parts 203 are divided into two groups, and the two groups of supporting parts 203 are arranged on the inner peripheral wall of the corrugated sampling tube 1 and are located on both sides of the adjusting member 201, and are configured to be able to clamp the adjusting member 201; the adjusting member 201 has elasticity and is configured to be able to switch between a bowl shape and a disc shape. When the adjusting member 201 is in the bowl shape, the bowl opening 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 gas storage chamber 1011 and the air inlet chamber 1012 are communicated, and the outside air can enter the gas storage chamber 1011 for storage in turn through the air inlet 202, the air inlet chamber 1012, the gap between the adjusting member 201 and the corrugated sampling tube 1; when the adjusting member 201 is in the disc shape, the adjusting member 201 is in sealing abutment with the corrugated sampling tube 1 to close the gas storage chamber 1011.

[0041] Specifically in this embodiment, taking the corrugated sampling tube 1 being horizontally arranged and the number being three as an example, the number of the adjusting members 201 is correspondingly three, and they are respectively inserted into the three corrugated sampling tubes 1 during installation, as Figure 4 shown, the adjusting member 201 is vertically arranged at a relatively convex part inside the corrugated sampling tube 1, so that under the clamping action of the V-shaped structure formed at the relatively convex part inside the corrugated sampling tube 1, the adjusting member 201 can be positioned and sealedly clamped. Taking the adjusting member 201 in the middle as an example, the left side of this adjusting member 201 is the gas storage chamber 1011, and the right side is the air inlet chamber 1012. Optionally, the right end of the rightmost corrugated sampling tube 1 can be arranged to be open, so as to reduce the material consumption and lower the use cost.

[0042] The number of the supporting parts 203 can be set to eight, and they are evenly divided into two groups. The two groups of supporting parts 203 are respectively arranged at the relatively convex parts inside 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 at the relatively convex parts inside the corrugated sampling tube 1, so as to facilitate the positioning and clamping of the adjusting member 201.

[0043] More specifically, the four supporting parts 203 in the same group can be arranged to be evenly distributed along the circumferential direction to ensure that when the adjusting member 201 is subjected to acting forces from different directions, it can obtain balanced support and avoid displacement and deformation of the adjusting member 201 caused by uneven stress.

[0044] More specifically, the two sets of support portions 203 can be arranged to correspond to each other circumferentially 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.

[0045] Optionally, the air inlet 202 can be arranged on the side wall of the V-shaped structure formed by the relatively outwardly convex part inside the same corrugated sampling tube 1 as the support portion 203 on the right side of the adjusting member 201, so as to avoid the problem that the gas transmission path is too long due to the long distance between the air inlet 202 and the adjusting member 201, which affects the sampling efficiency.

[0046] In addition, since the air inlet 202 and the corrugated sampling tube 1 are arranged correspondingly, when multi-point sampling of the air in the preset environment is carried out, each corrugated sampling tube 1 is responsible for collecting the air sample at a specific point, and the corresponding air inlet 202 is only used as the only channel for the corrugated sampling tube 1 to obtain the outside air. Different from the traditional structure where one air inlet 202 corresponds to multiple corrugated sampling tubes 1, this method effectively avoids the problem of sample contamination that may be caused by the repeated use of the air inlet 202 in the complex sampling process.

[0047] More specifically, in the traditional structure, as the number of samplings increases, it is easy for the previous air sample to remain inside the air inlet 202. When the new air sample passes through, it is extremely easy to mix with the remaining sample, thus contaminating the subsequently collected sample and causing deviation in the detection result. However, 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 has completed 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 basis for subsequent high-precision detection and analysis, and thus greatly improving the accuracy and reliability of the entire air detection process.

[0048] Optionally, the support portion 203 can be arranged in a spherical structure. In this way, when contacting the adjusting member 201, the spherical structure can provide all-round contact points, effectively dispersing the pressure borne by the adjusting member 201. Compared with other shaped support structures, the spherical support portion 203 can better adapt to its dynamic displacement when the adjusting member 201 changes its form 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 stressed, the spherical support portion 203 can give stable and uniform support, further strengthening the positioning and clamping effect on the adjusting member 201. In addition, the spherical structure is relatively simple in manufacturing process, which can reduce the production cost, and at the same time reduce the manufacturing errors caused by complex shapes, improving the consistency and stability of the product.

[0049] Initially, the corrugated sampling tube 1 is in a compressed state, the adjusting member 201 is in a bowl shape, and the bowl opening of the adjusting member 201 faces the air inlet 202. The distance between the relatively outwardly convex portions on the inner sides of adjacent corrugated sampling tubes 1 is relatively close. The more the relatively outwardly convex portions on the inner side of the corrugated sampling tube 1 protrude, the farther the distance between the relatively outwardly convex portion on the inner side of the corrugated sampling tube 1 and the adjusting member 201. As a result, a gap can appear between the adjusting member 201 and the corrugated sampling tube 1, and further the gas storage chamber 1011 can communicate with the air inlet chamber 1012.

[0050] During use, first stretch the corrugated sampling tube 1. At this time, due to the increase in the tube length of the corrugated sampling tube 1, on the one hand, the distance between the relatively outwardly convex portions on the inner sides of adjacent corrugated sampling tubes 1 is farther. The less the relatively outwardly convex portions on the inner side of the corrugated sampling tube 1 protrude, the closer the distance between the relatively outwardly convex portion on the inner side of the corrugated sampling tube 1 and the adjusting member 201. At this time, there is still a gap between the adjusting member 201 and the corrugated sampling tube 1 under the support of the two sets of support portions 203. On the other hand, the volume of the corrugated sampling tube 1 increases, and further the air pressure inside the corrugated sampling tube 1, that is, inside the gas storage chamber 1011, decreases. Then, a pressure difference will appear on both sides of the adjusting member 201. Under the action of the pressure difference, outside air can sequentially enter the gas 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.

[0051] After sampling for a preset time, the air pressure in the gas storage chamber 1011 is basically equal to or close to the atmospheric pressure. Then, compress the corrugated sampling tube 1 by a preset degree. After compression is completed, at this time, there is still a gap between the adjusting member 201 and the corrugated sampling tube 1 under the support of the two sets of support portions 203. And due to the decrease in the tube length of the corrugated sampling tube 1, the volume of the corrugated sampling tube 1 decreases, and further the air pressure inside the corrugated sampling tube 1, that is, inside the gas storage chamber 1011, increases. Subsequently, 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 the bowl shape to the disc shape, and the length in the vertical direction will increase, so as to be able to make a sealing contact with the inner peripheral wall of the corrugated sampling tube 1 to seal the gas storage chamber 1011, thereby completing the sampling operation.

[0052] After performing the above sampling operation on the corrugated sampling tubes 1 located in the middle and on the right, the ambient air detection device forms a shape as shown in Figure 4 shown.

[0053] In some embodiments, a limiting component 3 is provided on each adjusting member 201. The limiting component 3 is configured to be able to prevent the bowl opening 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 during the process of the corrugated sampling tube 1 switching its form, the situation of first switching from the bowl shape to the disc shape and then from the disc shape to the bowl shape is avoided. Furthermore, the situation of a gap appearing after the adjusting member 201 and the corrugated sampling tube 1 are in sealed contact is avoided, so that the airtightness of the air storage chamber 1011 can be guaranteed, air sample leakage is avoided, and thus the stability and reliability of the entire ambient air detection device are greatly improved, providing a solid guarantee for accurately obtaining air samples.

[0054] Furthermore, the limiting component 3 is arranged on the side of the adjusting member 201 close to the air inlet 202 and is set to include a plurality of limiting pieces 301. The plurality of limiting pieces 301 are arranged circumferentially. One end of the limiting piece 301 far from the center of the adjusting member 201 is hinged to the adjusting member 201. When the plurality of limiting pieces 301 are in the same plane, they jointly form a closed structure, and the closed structure can form a stop fit with the adjusting member 201.

[0055] Specifically in this embodiment, as Figure 5 shown, the shape of the limiting piece 301 can be set as a quasi-sector structure, and the angular end is arranged towards the center of the adjusting member 201. The center of the arc end of the limiting piece 301 is hinged to the adjusting member 201; the number of the limiting pieces 301 can be set to four. The four limiting pieces 301 are an integral structure, and when the four limiting pieces 301 are in the same plane, they can jointly form a disc structure, and adjacent limiting pieces 301 can stop each other, so that the disc structure is in a stable state, so as to be able to form a stop fit with the adjusting member 201 and prevent the bowl opening of the adjusting member 201 from facing away from the air inlet 202.

[0056] In other embodiments, to further improve the airtightness 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 diameter of the cross-sectional circle of the sealing ring 4 is greater than the thickness of the adjusting member 201. The sealing ring 4 has elasticity. In this way, when the corrugated sampling tube 1 is in a stretched state and the adjusting member 201 is in a disc shape, the relatively convex part on the inner side of the corrugated sampling tube 1 will form a special V-shaped structure. Under the pushing action of this structure, due to the elasticity of the sealing ring 4, it can undergo a greater degree of elastic deformation. This deformation enables the sealing ring 4 to closely fit the corrugated sampling tube 1, thereby effectively filling the possible tiny gaps between the two, and thus significantly enhancing the airtightness between the adjusting member 201 and the corrugated sampling tube 1.

[0057] In other embodiments, considering the strict requirements for the purity of the sample during the air detection process, an intake valve is provided in each air inlet 202.

[0058] Specifically in this embodiment, the intake valve is in an open state during sampling to ensure that the air in the preset environment can flow in smoothly and complete the sampling task; while in other non-sampling periods, the intake valve always remains in a closed state, effectively preventing the air in the non-preset environment from entering the intake chamber 1012 through the intake port 202, and eliminating the risk of sample contamination from the source.

[0059] When releasing the air sample in the corrugated sampling tube 1, as Figure 4 shown, the corresponding outlet valve can be adjusted to an open state in the order of the corrugated sampling tube 1 from the right side to the middle first, and then the corresponding corrugated sampling tube 1 is compressed. As the corresponding corrugated sampling tube 1 is compressed, the air sample inside the corrugated sampling tube 1 is discharged accordingly; as the corrugated sampling tube 1 is compressed, the adjusting member 201 gradually resets under the elastic action and returns to the state of the leftmost corrugated sampling tube 1 and the adjusting member 201 as shown in Figure 4 so as to facilitate the next use.

[0060] In other embodiments, to further improve the sampling efficiency, it is set that the number of intake ports 202 on each corrugated sampling tube 1 is multiple and arranged at intervals in the circumferential direction. Optionally, the number of intake ports 202 on each corrugated sampling tube 1 can be set to five. In this way, when the air in the preset environment enters the inside of the intake chamber 1012 under the pressure difference, it can enter through five intake ports 202 at the same time, thereby improving the intake efficiency, reducing the total intake time, and improving the sampling efficiency.

[0061] In other embodiments, to ensure that enough air samples can be obtained, it is set that the adjusting member 201 is arranged close to the adjacent corrugated sampling tube 1. In this way, the volume occupied by the gas storage chamber 1011 is much larger than the volume occupied by the intake chamber 1012. Furthermore, when the corrugated sampling tube 1 is stretched, the air pressure inside the gas storage chamber 1011 can be reduced to a large extent under the pressure difference, so that the air in the external environment can rush into the gas storage chamber 1011 more under the pressure difference.

[0062] Specifically in this embodiment, as Figure 4 shown, the adjusting members 201 are all arranged on the right side to make the volume occupied by the gas storage chamber 1011 much larger than the volume occupied by the intake chamber 1012.

[0063] In some other embodiments, to improve the simplicity during operation, it is set that the corrugated sampling tube 1 has elasticity. In this way, after the corrugated sampling tube 1 is stretched, the corrugated sampling tube 1 has a tendency to shorten under its own elastic action, thereby automatically realizing the switching of the form of the adjusting member 201.

[0064] In some other embodiments, to improve the degree of automation, the environmental air detection device is further provided with a driving mechanism 5, and the driving mechanism 5 is configured to be able to provide the driving force for the telescopic movement of each corrugated sampling tube 1.

[0065] Specifically, in this embodiment, the driving mechanism 5 is provided to include a base 501 with a quantity one more than that of the corrugated sampling tubes 1, mounting rings 502 with a quantity twice that of the corrugated sampling tubes 1, and multiple groups of driving cylinders 503 with a quantity equal to that of the corrugated sampling tubes 1. The multiple 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 multiple mounting rings 502 are grouped in pairs, and the multiple groups of mounting rings 502 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 adjacent two bases 501, and the axis of the mounting ring 502 extends along the tube length direction of the corrugated sampling tube 1. When the corrugated sampling tube 1 is installed, it is inserted into the mounting ring 502, and both ends of the corrugated sampling tube 1 respectively form a stop fit with the two mounting rings 502 in the same group; the driving cylinders 503 in the same group are respectively arranged between the two mounting rings 502 in the same group. Taking a group of driving cylinders 503 as an example, the cylinder body of the driving cylinder 503 is arranged on one of the mounting rings 502 in the same group, and the output shaft of the driving cylinder 503 is arranged on the other mounting ring 502 in the same group, so as to be able to synchronously drive the corrugated sampling tube 1 to stretch or compress when the output shaft of the driving cylinder 503 extends or retracts.

[0066] Optionally, the quantity of each group of driving cylinders 503 can be set to six and arranged circumferentially.

[0067] Optionally, the driving cylinder 503 can be set to any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0068] Taking the quantity of the corrugated sampling tubes 1 being set to three as an example, as Figure 1 and Figure 2As shown, the driving mechanism 5 is arranged 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 the 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 adjacent two bases 501, and the axis of the mounting ring 502 extends along the tube length direction of the corrugated sampling tube 1. When the corrugated sampling tube 1 is installed, it is inserted into the mounting ring 502, and both ends of the corrugated sampling tube 1 respectively form a stop fit with the two mounting rings 502 in the same group. The driving cylinders 503 in the same group are respectively arranged between the two mounting rings 502 in the same group. Taking the driving cylinders 503 in the same group as an example, the cylinder body of the driving cylinder 503 is arranged on the left mounting ring 502, and the output shaft of the driving cylinder 503 is vertically arranged on the right mounting ring 502, so that when the output shaft of the driving cylinder 503 extends or retracts, the corrugated sampling tube 1 can be synchronously driven to stretch or compress.

[0069] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, 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, it should be considered as the scope described in this specification.

[0070] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An ambient air detection device, characterized in that, The described ambient air detection device includes a plurality of corrugated sampling tubes, the plurality of corrugated sampling tubes are connected to each other, each of the corrugated sampling tubes can be telescopic, and a sealed chamber is formed inside each of them. The adjacent sealed chambers are not communicated with each other. A sampling assembly is inserted into each of the corrugated sampling tubes. The sampling assembly is configured to be able to introduce the air in the external environment into the sealed chamber. 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 outwardly convex part inside the corrugated sampling tube. The adjusting member divides the sealed chamber into a gas storage chamber and an air inlet chamber; the air inlet is arranged on the corrugated sampling tube and is simultaneously communicated with the air inlet chamber and the external environment; the plurality of supporting parts are divided into two groups, and 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 be able to clamp the adjusting member; the adjusting member has elasticity and is configured to be able to switch between a bowl shape and a disk shape. When the adjusting member is in the bowl shape, 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 gas storage chamber and the air inlet chamber are communicated, and the external air can sequentially enter the gas storage chamber through the air inlet, the air inlet chamber, the gap between the adjusting member and the corrugated sampling tube for storage; when the adjusting member is in the disk shape, the adjusting member is in sealing contact with the corrugated sampling tube to close the gas storage chamber.

2. The ambient air detection device according to claim 1, characterized in that, A limiting assembly is arranged on each of the adjusting members, and the limiting assembly is configured to be able to prevent the bowl mouth of the adjusting member from facing away from the air inlet.

3. The ambient air detection device according to claim 2, characterized in that, The limiting assembly is arranged on the side of the adjusting member close to the air inlet and includes a plurality of limiting pieces. The plurality of limiting pieces are arranged circumferentially. One end of the limiting piece far away from the center of the adjusting member is hinged on the adjusting member. When the plurality of limiting pieces are in the same plane, they jointly form a closed structure, and the closed structure can form a stop fit with the adjusting member.

4. The ambient air detection device according to claim 1, wherein, 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 diameter of the cross-sectional circle of the sealing ring is greater than the thickness of the adjusting member. The sealing ring has elasticity.

5. The ambient air detection device according to claim 1, characterized in that, An intake valve is arranged in each of the air inlets.

6. The ambient air detection device according to claim 1, characterized in that The number of the air inlets on each of the corrugated sampling tubes is multiple, and they are arranged at intervals circumferentially.

7. The ambient air detection device according to claim 1, wherein The adjusting member is arranged close to the adjacent corrugated sampling tube.

8. The ambient air detection device according to claim 1, characterized in that, The corrugated sampling tube has elasticity.

9. The ambient air detection device according to claim 1, wherein The ambient air detection device further includes a driving mechanism, and the driving mechanism is configured to be able to provide the driving force for the telescopic movement of each of the corrugated sampling tubes.

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