Small handheld gas sampler

Abstract

The utility model relates to the technical field of gas samplers, in particular to a small handheld gas sampler which comprises a camouflage shell, a sampling assembly and a power assembly, the camouflage type shell is provided with a notch, an insertion channel, a mounting cavity and a camouflage type button, the notch is located at the top of the camouflage type shell, the insertion channel is located under the notch and communicates with the outside of the camouflage type shell through the notch, and the mounting cavity is located in the camouflage type shell; the sampling assembly is detachably installed on the disguised shell through the notch, a sampling pipe of the sampling assembly is inserted into the insertion channel, the insertion channel is used for hiding the sampling pipe, and the sampling assembly is provided with a disguised air inlet; the power assembly is mounted in the mounting cavity and used for providing air exhaust power for the sampling assembly, and the disguise button is used for starting the power assembly; the problems that an existing gas sampler or a drug detector integrated with the sampler is large in size, high in recognition degree and not beneficial to camouflage are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas sampler technical field, especially a small -size handheld gas sampler. BACKGROUND

[0002] Air monitoring is the common means of drug monitoring at present, can determine the activity place of drug users through air monitoring, so as to facilitate the drug control department to discover, strike drug crime in time, prevent drug from spreading.

[0003] Due to the high mobility and diffusivity of air, the drug concentration in the air diffused by a drug-taking behavior will decrease quickly, by setting a suitable threshold, whether someone takes drugs in the place within twenty minutes or so can be judged, so in order to interfere with the legal operation of entertainment places as little as possible, it is necessary to effectively identify and strike drug crime, a small -size handheld gas sampler is needed, which is carried by investigators, and real-time sampling is carried out at entertainment places and other places, so as to facilitate subsequent drug detector for analysis and detection, so as to realize drug monitoring at entertainment places and other places in a concealed manner, and the existing gas sampler or drug detector integrated with the sampler is obviously not suitable for covert investigation due to its large size and high recognition. SUMMARY

[0004] In view of the above defects, the utility model aims at providing a small -size handheld gas sampler, which solves the problem of large size and high recognition of the existing gas sampler or drug detector integrated with the sampler, which is not conducive to disguise.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A small -size handheld gas sampler, including camouflage shell, sampling assembly and power assembly, the camouflage shell is equipped with notch, plug-in channel, installation cavity and camouflage button, the notch is located at the top of the camouflage shell, the plug-in channel is located directly below the notch, the plug-in channel is communicated with the outside of the camouflage shell through the notch, the installation cavity is located in the inside of the camouflage shell,

[0007] The sampling assembly is detachably mounted in the camouflage shell through the notch, and the sampling tube of the sampling assembly is inserted into the plug-in channel, the plug-in channel is used for hiding the sampling tube, the sampling assembly is equipped with camouflage air inlet,

[0008] The power assembly is installed in the installation cavity, the power assembly is used for providing the power of air extraction for the sampling assembly, and the camouflage button is used for starting the power assembly.

[0009] Further, the sampling assembly further comprises a plug connector; the camouflage air inlet is arranged on the top surface of the plug connector, and a first airflow channel is arranged from the camouflage air inlet to the bottom surface of the plug connector; the tube opening of the sampling tube and the bottom of the plug connector are detachably and sealingly connected, the bottom end of the first airflow channel is open to the sampling tube, and the sampling tube is used for containing sampling liquid;

[0010] The plug connector is detachably mounted in the gap of the camouflage shell, and the plug connector fills the gap.

[0011] The plug connector is further provided with a second airflow channel, and the second airflow channel communicates the inside of the sampling tube and the power assembly.

[0012] Further, the sampling assembly further comprises a water blocking member; the water blocking member is detachably connected in the second airflow channel, and the water blocking member is used for preventing water entering the second airflow channel from entering the power assembly.

[0013] Further, the sampling assembly further comprises a sampling suction head; the sampling suction head is arranged in the sampling tube, the wide opening end of the sampling suction head is sealingly sleeved on the bottom end of the first airflow channel, and the narrow opening end of the sampling suction head extends to the bottom of the sampling tube.

[0014] Further, the water blocking member comprises a filter membrane, an air permeable membrane frame and a membrane cover; the right side of the plug connector is provided with a filter installation opening through which the outside communicates with the second airflow channel, the filter installation opening separates the second airflow channel into a first branch channel and a second branch channel, the filter membrane, the air permeable membrane frame and the membrane cover are sequentially and sealingly installed in the filter installation opening from left to right, the membrane cover and the filter installation opening are detachably connected and block the filter installation opening, the filter membrane blocks the outlet of the first branch channel, and the air permeable gap of the air permeable membrane frame communicates the filter membrane and the second branch channel.

[0015] Further, the air permeable membrane frame is a hollow cylinder, one end of the hollow cylinder is provided with a grid plane, the grid plane abuts against the filter membrane, the other end of the hollow cylinder abuts against the membrane cover, and the side wall of the hollow cylinder is provided with an air permeable opening leading to the second branch channel.

[0016] Further, the power assembly comprises an air suction pump and a battery pack; the battery pack and the air suction pump are both mounted in the mounting cavity, the electric control parts of the battery pack and the air suction pump are electrically connected, and the air suction port of the air suction pump communicates with the second airflow channel through a hose;

[0017] The plug-in channel is provided with a sampling air outlet leading to the outside, and the exhaust port of the air suction pump communicates with the plug-in channel through a hose.

[0018] Further, the right part of the camouflage type shell is provided with an air flow passage joint corresponding to the one end of the second air flow passage leading to the power assembly, and the one end of the second air flow passage leading to the power assembly is sealingly inserted into the open part of the air flow passage joint, and the joint part of the air flow passage joint is communicated with the air outlet through a hose.

[0019] The right part of the camouflage type shell is further provided with an exhaust joint communicated with the plug-in passage, and the joint part of the exhaust joint is communicated with the air outlet through a hose.

[0020] Further, the sampling air outlet is provided with a sound attenuation structure.

[0021] Further, the outer surface of the camouflage type shell is recessed towards the inside of the camouflage type shell corresponding to the sampling air outlet.

[0022] The technical scheme of the utility model can have the following beneficial effects: in order to make the gas sampler small in size and complete gas sampling and storage, the inside of the gas sampler is preferably composed of only a sampling assembly and a power assembly; at the same time, in order to facilitate the camouflage of the gas sampler, the gas sampler is designed into the shape of an article to camouflage the gas sampler, specifically, the camouflage type shell can be a lighter shell, an electronic cigarette shell or a power bank shell structure, which is used for camouflaging the handheld gas sampler into a lighter, an electronic cigarette or a power bank structure, the camouflage type button can be camouflaged into an identification or function key (such as a dot in an eight trigram pattern or a power bank button), and a decorative pattern (such as a flame identification in the lighter) can be designed on the surface of the article to improve the camouflage effect, so that an outsider cannot identify the gas sampler, and the undercover police can conveniently carry the gas sampler in special occasions, realize the hidden operation of the undercover police and are not easy to be found. Figure 1 The sampling assembly is detachably mounted in the camouflage type shell through the notch, and after the sampling pipe of the sampling assembly is inserted into the plug-in passage, the plug-in passage is used for hiding the sampling pipe, and the power assembly mounted in the mounting cavity provides suction power for the sampling assembly, so that the sampling assembly sucks the gas sample in the outside environment through the camouflage type air inlet and stores the gas sample in the sampling pipe, the sampling pipe can be not exposed before and during sampling, the sampling pipe cannot be found from the external structure of the gas sampler, and the plug-in setting avoids the loosening of the sampling pipe; and based on the detachable sampling assembly, the sampling assembly can be quickly taken out after sampling to detect the stored sample in the sampling pipe. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structure schematic view of a small handheld gas sampler according to one embodiment of the utility model.

[0024] Figure 2 is a cross-sectional view of a small handheld gas sampler as shown in Figure 1

[0025] Figure 3 is an enlarged view of A as shown in Figure 2

[0026] Figure 4 is a partial assembly view of a small handheld gas sampler as shown in Figure 1

[0027] Wherein: camouflage shell 1, sampling assembly 2, power assembly 3, notch 14, plug-in channel 11, mounting cavity 15, camouflage button 16, camouflage air inlet 21, sampling air outlet 111, plug 22, sampling tube 23, first air flow channel 221, second air flow channel 222, water blocking piece 24, sampling suction head 25, filter membrane 241, air permeable membrane rack 242, membrane cover 243, filter mounting port 223, first branch channel 2221, second branch channel 2222, grid plane 2421, air permeable port 2422, suction pump 31, battery pack 32, suction port 311, exhaust port 312, air flow channel joint 12, exhaust joint 13. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be understood as limiting the present application.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features, which are used to distinguish the described features, and have no order or importance.

[0030] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0031] ​​​In the description of the embodiments of the utility model, it needs to be explained that, unless there is explicit stipulation and limitation, the terms "mounting", "connecting", "connection" should be understood in broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to specific circumstances.

[0032] The utility model discloses a small handheld gas sampler. Figures 1 to 4 The utility model discloses a small handheld gas sampler.

[0033] A small handheld gas sampler, including camouflage shell 1, sampling assembly 2 and power assembly 3, camouflage shell 1 is equipped with notch 14, plug-in channel 11, installation cavity 15 and camouflage button 16, and notch 14 is located at the top of camouflage shell 1, plug-in channel 11 is located directly below notch 14, plug-in channel 11 is communicated with the outside of camouflage shell 1 through notch 14, and installation cavity 15 is located in the inside of camouflage shell 1.

[0034] Sampling assembly 2 is detachably installed in camouflage shell 1 through notch 14, and the sampling pipe 23 of sampling assembly 2 is inserted in plug-in channel 11, and plug-in channel 11 is used to hide sampling pipe 23, and sampling assembly is equipped with camouflage air inlet 21.

[0035] Power assembly 2 is installed in installation cavity 15, and power assembly 2 is used to provide the power of suction for sampling assembly 2, and camouflage button 16 is used to start power assembly 2.

[0036] As shown in Figure 1 And 2 In order to make the small gas sampler complete gas sampling and store and take away, the inside of the gas sampler is preferably only composed of sampling assembly 2 and power assembly 3, and in order to make the gas sampler easy to camouflage, the gas sampler is designed into the shape of an article to camouflage the gas sampler, specifically, the camouflage shell 1 can be a lighter shell, an electronic cigarette shell or a power bank shell structure, which is used to camouflage the handheld gas sampler into a lighter, an electronic cigarette or a power bank structure, the camouflage button 16 can be disguised as the logo or function key (such as a dot in the eight trigrams pattern or a power bank button) of the article, and a decorative pattern (such as Figure 1The flame identification in the flame identification) to improve the camouflage effect, so that outsiders can not identify the gas sampler, and the police in civilian clothes in special occasions, to achieve the hidden operation of the police in civilian clothes, not easy to be found. The gap 14, the plug-in channel 11, the mounting cavity 15 and the camouflage button 16 are provided in the camouflage shell 1, the sampling assembly 2 is detachably mounted in the camouflage shell 1 through the gap 14, and the sampling pipe 23 of the sampling assembly 2 is inserted into the plug-in channel 11, the plug-in channel 11 is used to hide the sampling pipe 23, and the power assembly 2 mounted in the mounting cavity 15 provides suction power for the sampling assembly 2, so that the sampling assembly 2 sucks the gas sample in the outside through the camouflage air inlet 21 and stores it in the sampling pipe 23, so that the sampling pipe 23 can not be exposed before and during sampling, and the sampling pipe 23 cannot be found from the external structure of the gas sampler, and the plug-in setting avoids its loosening; and based on the detachable sampling assembly 2, the sampling assembly 2 can be quickly taken out after sampling to detect the sample stored in the sampling pipe 23.

[0037] It should be noted that the sampling assembly 2 can be a material such as a dissolving solution, a sponge or the like capable of adsorbing toxic components in the gas for gas sampling, and can also be a chemical reaction, cooling and solidification or the like for gas sampling, which is not limited here; similarly, the power assembly 3 can be a fan assembly, a suction pump assembly or a vacuum pump assembly or the like having a gas suction function.

[0038] Further, the sampling assembly 2 further comprises a plug-in head 22; the camouflage air inlet 21 is arranged on the top surface of the plug-in head 22, a first airflow channel 221 is arranged from the camouflage air inlet 21 to the bottom surface of the plug-in head 22, the pipe opening of the sampling pipe 23 and the bottom of the plug-in head 22 are detachably and sealingly connected, the bottom end of the first airflow channel 221 leads to the sampling pipe 23, and the sampling pipe 23 is used to store sampling liquid;

[0039] The plug-in head 22 is detachably mounted in the camouflage shell 1 through the gap 14, and the plug-in head 22 fills the gap 14.

[0040] The plug-in head 22 further comprises a second airflow channel 222, which communicates the inside of the sampling pipe 23 and the power assembly 3.

[0041] In this embodiment, as shown in Figure 2 and 3 The first airflow channel 221, the sampling pipe 23 and the second airflow channel 222 form an airflow passage from the outside to the power assembly 3 (as shown in Figure 2In order to sample as many gases as possible in a short time, the sampling assembly 2 preferably adopts the method of dissolving toxic components in the gas by the sampling liquid, so that the suction force of the power assembly 3 can make the gas quickly fill the inside of the sampling tube 23 and flow through the special sampling liquid (especially when the sampling tube 23 is short, the gas can be sucked in without the need for gas flow guide, and the gas is sprayed to the sampling liquid at the same time), and the toxic components in the gas are dissolved and absorbed by the sampling liquid while the speed of the gas flowing through is less affected. Therefore, the sampling assembly 2 is composed of the plug 22 and the sampling tube 23, and the sampling tube 23 can hold the special sampling liquid. Based on the structure of the sampling assembly 2, the plug 22 only needs to fill the gap 14, and the camouflage air inlet 21 arranged on the top surface of the plug 22 can directly pass through the outside to quickly suck air, and can be disguised as the shape of an object of a non-gas sampler in cooperation with the camouflage shell 1.

[0042] Further, the sampling assembly 2 further comprises a water blocking member 24; the water blocking member 24 is detachably connected in the second airflow passage 222, and the water blocking member 24 is used to prevent the water entering the second airflow passage 222 from entering the power assembly 3.

[0043] In this embodiment, the suction force in the airflow passage comes from the power assembly 3, and the gas sucked to the power assembly 3 will pass through the sampling liquid in the sampling tube 23, so the gas sucked to the power assembly 3 may contain water, which will affect the normal operation of the power assembly 3 (especially when the power assembly 3 works by electricity). Therefore, the water blocking member 24 is detachably connected in the second airflow passage 222 to filter the water in the gas flowing through the second airflow passage 222; more importantly, the water blocking member 24 can not be limited to filtering water, and can have different filtering effects (such as dust absorption and filtering of other impurities) when the water blocking member 24 adopts different filtering structures.

[0044] Further, the sampling assembly 2 further comprises a sampling suction head 25; the sampling suction head 25 is arranged in the sampling tube 23, the wide mouth end of the sampling suction head 25 is sealed and arranged at the bottom end of the first airflow passage 221, and the narrow mouth end of the sampling suction head 25 extends to the bottom of the sampling tube 23.

[0045] In this embodiment, the sampling efficiency of the gas sucked into the sampling tube 23 by the suction force of the power assembly 3 and filled in the sampling tube 23 to be dissolved by the sampling liquid is too low, so that most of the gas is sucked to the second airflow passage 222 without being sampled. Therefore, the sampling suction head 25 is preferably arranged in the sampling tube 23 to guide the gas in the first airflow passage 221 to the sampling liquid and be immersed in the sampling liquid, so that the gas flows to the second airflow passage 222 after the toxic components in the gas are fully dissolved by the impact bubble absorption method, thereby greatly improving the sampling efficiency.

[0046] More importantly, the diversion of the sampling suction head 25 can also be used to directly draw the sampling liquid for testing when the sampling assembly 2 is disassembled and detected, thereby improving the convenience of detection. At the same time, the sampling tube 23 and the sampling suction head 25 are preferably disposable to avoid repeated use and affect the sampling detection results of the next sampling.

[0047] Further, the water blocking member 24 comprises a filter membrane 241, an air permeable membrane frame 242 and a membrane cover 243; the right side of the plug connector 22 is provided with a filter mounting port 223 through which the outside accesses the second airflow channel 222, the filter mounting port 223 divides the second airflow channel 222 into a first branch channel 2221 and a second branch channel 2222, the filter membrane 241, the air permeable membrane frame 242 and the membrane cover 243 are sequentially sealed and installed in the filter mounting port 223 from left to right, the membrane cover 243 and the filter mounting port 223 are detachably connected and block the filter mounting port 223, the filter membrane 241 blocks the outlet of the first branch channel 2221, and the air permeable gap of the air permeable membrane frame 242 is connected through the filter membrane 241 and the second branch channel 2222.

[0048] In this embodiment, as shown in Figure 3 and 4 , the water blocking member 24 is provided with a filter mounting port 223 through which the outside accesses the second airflow channel 222 at the right side of the plug connector 22, which is used to divide the second airflow channel 222 into a first branch channel 2221 and a second branch channel 2222, so that the water blocking member 24 is installed in the second airflow channel 222; therefore, the water blocking member 24 is composed of a filter membrane 241, an air permeable membrane frame 242 and a membrane cover 243, when the membrane cover 243 and the filter mounting port 223 are detachably connected and block the filter mounting port 223, the filter membrane 241, the air permeable membrane frame 242 and the membrane cover 243 are sequentially sealed and installed (such as by adding a sealing ring) in the filter mounting port 223 from left to right, so that the filter membrane 241 is responsible for filtering the gas, and the filtered gas flows to the second branch channel 2222 through the air permeable gap of the air permeable membrane frame 242, completing the filtration flow.

[0049] Further, the air permeable membrane frame 242 is a hollow cylinder, one end of the hollow cylinder is provided with a grid plane 2421, the grid plane 2421 abuts against the filter membrane 241, the other end of the hollow cylinder abuts against the membrane cover 243, and the side wall of the hollow cylinder is provided with an air permeable port 2422 leading to the second branch channel 2222.

[0050] In this embodiment, the air permeable film frame 242 needs to set up the air flow space between the filter membrane 241 and the membrane cover 243 to the second branch channel 2222, so the air permeable film frame 242 is preferably a hollow cylinder, and a grid plane 2421 is arranged at one end of the hollow cylinder for supporting the filter membrane 241 and allowing air to pass through, and the other end of the hollow cylinder is open for supporting the membrane cover 243, so that the internal space of the hollow cylinder is used as the air flow space, and the air permeable port 2422 is arranged on the side wall of the hollow cylinder to the second branch channel 2222, that is, the air permeable port 2422 is used to realize the air flow.

[0051] Further, the power assembly 3 includes an air suction pump 31 and a battery pack 32; the battery pack 32 and the air suction pump 31 are both installed in the installation cavity 15, the electric control parts of the battery pack 32 and the air suction pump 31 are electrically connected, and the air suction port 311 of the air suction pump 31 is communicated with the second air flow channel 222 through a hose;

[0052] The plug-in channel 11 is provided with a sampling air outlet 111 to the outside, and the exhaust port 312 of the air suction pump 31 is communicated with the plug-in channel 11 through a hose.

[0053] In this embodiment, as shown in Figures 2 to 4 The power assembly 3 is preferably composed of the air suction pump 31 and the battery pack 32, the electrically driven air suction noise is small, the concealment is high, and based on the working principle of the air suction pump 31, if no exhaust channel is arranged, the air discharged by the air suction pump will be difficult to discharge or discharge in the camouflage shell 1, thereby causing abnormal noise; therefore, the sampling air outlet 111 is arranged in the plug-in channel 11, so that the air suction pump 31 is communicated with the second air flow channel 222 of the plug-in head 22 and the plug-in channel 11 through a hose respectively, forming a circulating air flow channel (as shown in Figure 2 The magenta arrow indicates the path of the inhaled gas to the power assembly 3, and the blue arrow indicates the path of the gas discharged by the power assembly 3), so as to ensure smooth gas flow.

[0054] Further, the right part of the camouflage shell 1 is provided with an air flow channel connector 12 corresponding to one end of the second air flow channel 222 to the power assembly 3, one end of the second air flow channel 222 to the power assembly 3 is sealingly inserted into the open part of the air flow channel connector 12, and the connector part of the air flow channel connector 12 is communicated with the air suction port 311 through a hose;

[0055] The right part of the camouflage shell 1 is also provided with an exhaust connector 13 communicated with the plug-in channel 11, and the connector part of the exhaust connector 13 is communicated with the exhaust port 312 through a hose.

[0056] In this embodiment, as shown in Figure 4As shown, in order to ensure the sealing of the air flow channel, the air flow channel joint 12 and the exhaust joint 13 are arranged in the right part of the camouflage shell 1 corresponding to the second air flow channel 222 and the plug-in channel 11 respectively, so that the air pump 31 is connected in a sealed manner through the hose (because the hose can seal the joint part when connected with the joint part to prevent air leakage). It should be noted that when the end of the second air flow channel 222 is inserted into the open part of the air flow channel joint 12, a sealing rubber ring can be sleeved on the outer periphery of the end of the second air flow channel 222, so that a sealed connection is formed after insertion.

[0057] Further, the sampling exhaust port 111 is provided with a sound attenuation structure.

[0058] In this embodiment, the sampling exhaust port 111 is provided with a sound attenuation structure (such as a silencer or sound-absorbing sponge) to reduce the sound generated by the exhaust, avoid exposing the gas sampler due to exhaust sound, and improve the concealment.

[0059] Further, the outer surface of the camouflage shell 1 corresponding to the sampling exhaust port 111 is recessed towards the inside of the camouflage shell 1.

[0060] In this embodiment, as shown in Figure 1 and 2 The outer surface of the camouflage shell 1 corresponding to the sampling exhaust port 111 is recessed towards the inside of the camouflage shell 1, so that when the gas sampler is placed on the desktop, the sampling exhaust port 111 is blocked by the desktop, and the like, the sampling exhaust port 111 can still smoothly exhaust through the recessed position of the outer surface of the camouflage shell 1.

[0061] Other configurations and operations of the small handheld gas sampler according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0062] In the description of the present application, the description of the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A small, hand-held gas sampler characterized by: The sampling device comprises a camouflage shell, a sampling assembly and a power assembly; the camouflage shell is provided with a notch, a plug-in channel, a mounting cavity and a camouflage button; the notch is located at the top of the camouflage shell; the plug-in channel is located directly below the notch and communicates with the outside of the camouflage shell through the notch; the mounting cavity is located inside the camouflage shell; The sampling assembly is detachably mounted in the camouflage shell through the notch, and a sampling tube of the sampling assembly is inserted into the plug-in channel for hiding the sampling tube; the sampling assembly is provided with a camouflage air inlet; The power assembly is mounted in the mounting cavity for providing power for the sampling assembly; the camouflage button is used for starting the power assembly.

2. A small hand-held gas sampler according to claim 1, characterized in that: The sampling assembly further comprises a plug-in head; the camouflage air inlet is arranged on the top surface of the plug-in head; a first airflow channel is arranged from the camouflage air inlet to the bottom surface of the plug-in head; the tube opening of the sampling tube and the bottom of the plug-in head are detachably and sealingly connected; the bottom end of the first airflow channel leads into the sampling tube; the sampling tube is used for containing sampling liquid; The plug-in head is detachably mounted in the camouflage shell through the notch; the plug-in head fills the notch; The plug-in head is further provided with a second airflow channel; the second airflow channel communicates the inside of the sampling tube and the power assembly.

3. A small hand-held gas sampler according to claim 2, characterised in that: The sampling assembly further comprises a water blocking member; the water blocking member is detachably connected in the second airflow channel; the water blocking member is used for preventing water entering the second airflow channel from entering the power assembly.

4. A small hand-held gas sampler according to claim 2, wherein: The sampling assembly further comprises a sampling suction head; the sampling suction head is arranged in the sampling tube; the wide opening end of the sampling suction head is sealingly sleeved on the bottom end of the first airflow channel; the narrow opening end of the sampling suction head extends to the bottom of the sampling tube.

5. A small hand-held gas sampler according to claim 3, wherein: The water blocking member comprises a filter membrane, an air permeable membrane holder and a membrane cover; the right side of the plug-in head is provided with a filter member mounting opening leading from the outside to the second airflow channel; the filter member mounting opening separates the second airflow channel into a first branch channel and a second branch channel; the filter membrane, the air permeable membrane holder and the membrane cover are sequentially and sealingly mounted in the filter member mounting opening from left to right; the membrane cover and the filter member mounting opening are detachably connected and seal the filter member mounting opening; the filter membrane seals the outlet of the first branch channel; the air permeable gap of the air permeable membrane holder communicates the filter membrane and the second branch channel.

6. A small hand-held gas sampler according to claim 5, characterised in that: The air permeable membrane holder is a hollow cylinder; one end of the hollow cylinder is provided with a grid plane; the grid plane abuts against the filter membrane; the other end of the hollow cylinder abuts against the membrane cover; the side wall of the hollow cylinder is provided with an air permeable opening leading to the second branch channel.

7. A small hand-held gas sampler according to claim 2, wherein: The power assembly comprises an air suction pump and a battery pack; the battery pack and the air suction pump are both mounted in the mounting cavity; the electric control parts of the battery pack and the air suction pump are electrically connected; the air suction port of the air suction pump communicates with the second airflow channel through a hose. The plug-in channel is provided with a sampling air outlet to the outside, and the exhaust outlet of the air pump is communicated with the plug-in channel through a hose.

8. A small hand-held gas sampler according to claim 7, characterised in that: The right part of the camouflage shell is provided with an air flow channel joint corresponding to one end of the second air flow channel leading to the power assembly, and the other end of the second air flow channel leading to the power assembly is sealingly inserted into the open part of the air flow channel joint, and the joint part of the air flow channel joint is communicated with the air outlet through a hose. The right part of the camouflage shell is further provided with an exhaust joint communicated with the plug-in channel, and the joint part of the exhaust joint is communicated with the air outlet through a hose.

9. A small hand-held gas sampler according to claim 7, characterized in that: The sampling air outlet is provided with a sound attenuation structure.

10. A small hand-held gas sampler according to claim 7, characterized in that: The outer surface of the camouflage shell is recessed towards the inside of the camouflage shell corresponding to the sampling air outlet.

Images