A gas sampler for chemical safety detection

Abstract

The utility model relates to chemical industry gas sampling detection technical field discloses a kind of gas samplers for chemical safety detection, including shell, the front side of shell is provided with bottom block, the rear side of shell is provided with suction tube mechanism, the suction tube mechanism is used to carry out primary filtration to dust in air to prevent sampler blockage, the front side of bottom block is provided with extension mechanism, the extension mechanism is convenient for operator to detect inconvenient place, the bottom of shell is provided with quick-release power mechanism, the suction tube mechanism includes interface, the rear side of interface is fixedly connected in the rear side of shell, the rear side of interface is installed with gasket. In the utility model, through interface, gasket is sealedly connected with air pipe, filter filters dust in air, buckle assembly fixes filter, extension mechanism expands sampling range, quick-release power mechanism supplies power, control display component monitors, information transmission component transmits data.

Description

Technical Field

[0001] This utility model relates to the field of chemical gas sampling and detection technology, and in particular to a gas sampler for chemical safety detection. Background Technology

[0002] The gas sampler for chemical safety testing is a dedicated gas collection device designed specifically for chemical scenarios. Its core consists of a sampling probe, a corrosion-resistant gas path system, a precise flow control module, and a sample storage unit. It can adapt to complex environments such as chemical production workshops, tank areas, and pipeline interfaces. It can adjust the collection mode for gases in different states and ensure that the collected gas samples have the same composition and concentration as the actual gas on site by stably controlling the sampling flow rate, temperature, and time.

[0003] The primary function of gas samplers used for chemical safety testing is to capture gas samples in the chemical environment in real time, helping testing personnel to determine the concentration of toxic, harmful, flammable, and explosive gases, and promptly identify potential safety hazards. Secondly, they can provide qualified samples for component analysis, clarify whether there are excessive harmful substances in the gas, support the verification of environmental protection and safety indicators, and at the same time, they can cooperate with regular safety inspections to record gas change data at different times, avoid poisoning and explosion accidents, and protect the health of production personnel and the stability of chemical processes.

[0004] Gas samplers used for chemical safety testing are not equipped with external dust filters, posing a serious risk of clogging. Dust can directly enter the internal gas path, sampling pump, and detection element channels with the sampling airflow. The gradual accumulation of dust can lead to narrowing or even blockage of the gas path, causing distortion of the concentration of the collected gas samples, affecting the accuracy of the test data. Furthermore, dust wears down core components, exacerbating equipment wear and tear, increasing costs, delaying the investigation of chemical safety hazards, and posing risks to production safety. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a gas sampler for chemical safety testing, which aims to improve the problem of serious clogging risks in the existing technology due to the lack of an external dust filter.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a gas sampler for chemical safety testing, comprising a housing, a base block provided on the front side of the housing, a suction tube mechanism provided on the rear side of the housing, the suction tube mechanism being used to filter dust in the air to prevent the sampler from clogging, an extension mechanism provided on the front side of the base block, the extension mechanism being convenient for operators to inspect areas that are inconvenient to access, and a quick-release power supply mechanism provided at the bottom of the housing; The straw mechanism includes an interface, the front side of which is fixedly connected to the rear side of the housing. A gasket is installed on the rear side of the interface, and an air tube is threadedly connected to the rear side of the gasket. A filter is installed on the rear side of one end of the air tube, and the front side of the other end is threadedly connected to the rear side of the interface via the gasket. A cover is installed on the rear side of the filter. A snap-fit ​​assembly is provided on the right side of the outer wall of the filter. A control display assembly is provided on the top of the housing, and an information transmission assembly is provided on the right side of the housing.

[0007] As a further description of the above technical solution: The extension mechanism includes a connecting column, the rear side of which is rotatably connected to the front side of the base block via an installation assembly. A telescopic rod is threadedly connected to the front side of the connecting column. A rubber sleeve is installed on the outer wall of the front side of the telescopic rod. A ring is fixedly connected to the front side of the rubber sleeve. An installation assembly is provided on the front side of the base block.

[0008] As a further description of the above technical solution: The quick-release power mechanism includes a battery, the top of which is mounted on the bottom of the casing. A plug is installed on the front side of the top of the battery. Top posts are fixedly connected to all four sides of the top of the battery. Stabilizing blocks are rotatably connected to the front and rear sides of the bottom of the battery.

[0009] As a further description of the above technical solution: The buckle assembly includes a card, the right side of which is threaded to the left side of the outer casing, and the card is threaded with threads on all four sides inside.

[0010] As a further description of the above technical solution: The control display component includes a screen, the bottom of which is fixedly connected to the top front side of the housing, and buttons are installed on the top of the housing.

[0011] As a further description of the above technical solution: The information transmission component includes a warning light, the left side of which is fixedly connected to the right side of the housing, and a data port is installed in the middle of the right side of the housing.

[0012] As a further description of the above technical solution: The mounting assembly includes two retaining rings, the rear sides of which are threaded to the front side of the base block, and bolts passing through the upper and lower sides of the two retaining rings.

[0013] As a further description of the above technical solution: The outer shell has grooves on both the left and right sides. These grooves are ergonomically designed to prevent slipping and falling off.

[0014] This utility model has the following beneficial effects: 1. In this utility model, through the interface, the gasket is sealed to the air tube, the filter filters dust in the air, the buckle assembly fixes the filter, the extension mechanism expands the sampling range, the quick-release power supply mechanism provides power, the control and display component monitors, and the information transmission component transmits data. This achieves the following: avoiding sampler blockage and gas leakage, facilitating detection in hard-to-access areas, quickly replacing the power supply to ensure continuous operation, real-time monitoring and data transmission, and ensuring the stability of gas sampling in chemical environments.

[0015] 2. In this utility model, the connecting column is rotatably connected to the base block by means of the installation component, the telescopic rod and the connecting column are threaded together to adjust the length, the rubber sleeve is on the outer wall of the telescopic rod to assist in holding, and the air tube is fixed by the ring, so as to realize the coordinated operation between the components, which can flexibly adjust the sampling angle and distance, prevent the telescopic rod from slipping, prevent the air tube from shaking and shifting, and facilitate the operator to sample areas that are difficult to enter. Attached Figure Description

[0016] Figure 1 This is a perspective view of a gas sampler for chemical safety testing proposed in this utility model; Figure 2 This is a top view of a gas sampler for chemical safety testing proposed in this utility model; Figure 3 This is an exploded view of the suction tube mechanism in a gas sampler for chemical safety testing proposed in this utility model; Figure 4 This is a split view of the extension mechanism in a gas sampler for chemical safety testing proposed in this utility model; Figure 5 This is an exploded view of the quick-release power supply mechanism in a gas sampler for chemical safety testing proposed in this utility model.

[0017] In the diagram: 1. Outer shell; 2. Base block; 3. Straw mechanism; 31. Interface; 32. Gasket; 33. Air tube; 34. Filter; 35. Cap; 36. Snap-fit ​​assembly; 361. Card; 362. Thread; 37. Control and display assembly; 371. Screen; 372. Button; 38. Information transmission assembly; 381. Warning light; 382. Data port; 4. Extension mechanism; 41. Connecting post; 42. Telescopic rod; 43. Rubber sleeve; 44. Ring buckle; 45. Mounting assembly; 451. Snap ring; 452. Bolt; 5. Quick-release power mechanism; 51. Battery; 52. Plug; 53. Top post; 54. Stabilizing block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-5 An embodiment of this utility model is provided: a gas sampler for chemical safety testing, including a housing 1, a base block 2 on the front side of the housing 1, a suction tube mechanism 3 on the rear side of the housing 1, the suction tube mechanism 3 is used to filter dust in the air to prevent the sampler from clogging, an extension mechanism 4 is provided on the front side of the base block 2, the extension mechanism 4 facilitates the operator to test places that are inconvenient to access, and a quick-release power supply mechanism 5 is provided at the bottom of the housing 1. The straw mechanism 3 includes an interface 31, the front side of which is fixedly connected to the rear side of the housing 1. A gasket 32 ​​is installed on the rear side of the interface 31. An air tube 33 is threadedly connected to the rear side of the gasket 32. A filter 34 is installed on the rear side of one end of the air tube 33, and the front side of the other end is threadedly connected to the rear side of the interface 31 through the gasket 32. A cover 35 is installed on the rear side of the filter 34. A buckle assembly 36 is provided on the right side of the outer wall of the filter 34. A control display assembly 37 is provided on the top of the housing 1, and an information transmission assembly 38 is provided on the right side of the housing 1. Specifically, the quick-release power mechanism 5 at the bottom of the housing 1 provides the power required for the operation of the entire device. After the power is supplied, the control display component 37 at the top of the housing 1 starts up and enters the working state. The operator can use the control display component 37 to initially confirm whether the operating parameters of the device are normal. During gas sampling, the assembly and debugging of the suction tube mechanism 3 must be completed first. The front side of the interface 31 in the suction tube mechanism 3 is fixedly connected to the rear side of the outer shell 1. A gasket 32 ​​is installed on the rear side of the interface 31. Through the cooperation of the interface 31 and the gasket 32, a threaded seal connection is achieved between the front side of one end of the air tube 33 and the rear side of the interface 31, effectively preventing gas leakage during transmission. A filter 34 is installed on the rear side of the other end of the air tube 33. A cover 35 is installed on the rear side of the filter 34, and a buckle assembly 36 is provided on the right side of the outer wall of the filter 34. The operator operates the buckle... Component 36 unlocks the connection between cover 35 and filter 34, and then removes cover 35, so that the gas inlet of filter 34 is open. At this time, the external gas to be tested can smoothly enter the interior of filter 34. The dust in the air is filtered once by filter 34. The filtered gas no longer carries dust into the gas tube 33 and the sampling structure inside the outer shell 1, preventing the sampler from being blocked. The filter 34 adopts the JJB-GF model, with a filtration accuracy of 0.8μm, a temperature range of -50℃ to 280℃, and strong resistance to chemical corrosion. When performing gas detection in areas that are inconvenient to access, the operator activates the extension mechanism 4 located on the front side of the base block 2. Through the structural extension action of the extension mechanism 4, the sampling end connected to the extension mechanism 4 is extended to the target detection area, so that the filter 34 can directly contact the gas to be detected in the area. Through the synergistic effect of the extension mechanism 4 and the suction mechanism 3, the effect of gas sampling in areas that are inconvenient to access is achieved. The gas filtered by filter 34 is transmitted along gas pipe 33 to interface 31, and then enters the gas sampling module inside the housing 1 through interface 31. After the sampling module completes gas collection, the information transmission component 38 on the right side of the housing 1 is activated. The information transmission component 38 transmits the collected gas composition, concentration and other data to the external terminal device. At the same time, the control display component 37 displays the sampling data and equipment operating status in real time. The operator can intuitively grasp the sampling situation through the control display component 37. Through the cooperation of information transmission component 38 and control display component 37, the remote transmission and real-time monitoring of sampling data are realized. When the power detection structure of the quick-release power supply mechanism 5 indicates insufficient power, the operator can directly operate the quick-release structure of the quick-release power supply mechanism 5 to quickly remove the old power supply and install the new power supply without disassembling other parts of the outer casing 1. The quick replacement function of the quick-release power supply mechanism 5 ensures the continuous operation of the equipment.

[0020] Reference Figures 1-4 The extension mechanism 4 includes a connecting column 41. The rear side of the connecting column 41 is rotatably connected to the front side of the base block 2 via an installation assembly 45. A telescopic rod 42 is threadedly connected to the front side of the connecting column 41. A rubber sleeve 43 is installed on the outer wall of the front side of the telescopic rod 42. A ring buckle 44 is fixedly connected to the front side of the rubber sleeve 43. An installation assembly 45 is provided on the front side of the base block 2. Specifically, before use, the extension mechanism 4 needs to be assembled with the base block 2. The front side of the base block 2 is provided with an installation component 45. The rear side of the connecting column 41 is rotatably connected to the front side of the base block 2 through the installation component 45. Through the cooperation of the installation component 45 and the connecting column 41, the connecting column 41 can rotate flexibly around the axis of the installation component 45, thus realizing the stable connection between the extension mechanism 4 and the base block 2 and the adjustable angle. When the sampling distance needs to be adjusted, the operator can rotate the telescopic rod 42 threaded on the front side of the connecting column 41. Since the telescopic rod 42 is threadedly connected to the connecting column 41, when the telescopic rod 42 is rotated, the telescopic rod 42 can move back and forth along the axial direction of the connecting column 41, thereby changing the overall length of the extension mechanism 4. Through the threaded engagement between the connecting column 41 and the telescopic rod 42, the effect of adjusting the sampling distance according to the detection requirements is achieved. A rubber sleeve 43 is installed on the front outer wall of the telescopic rod 42. When the operator holds the telescopic rod 42 to adjust the length or angle, the rubber sleeve 43 contacts the operator's hand, increasing the friction between the hand and the telescopic rod 42, and preventing the telescopic rod 42 from slipping out of the hand during the adjustment process. Through the assembly of the rubber sleeve 43 and the telescopic rod 42, the operator can achieve the effect of holding the telescopic rod 42 stably. A ring 44 is fixedly connected to the front side of the rubber sleeve 43. When the extension mechanism 4 and the suction mechanism 3 work together, the operator needs to pass the end of the air tube 33 in the suction mechanism 3 away from the filter 34 through the ring 44 so that the ring 44 can constrain and fix the air tube 33, preventing the air tube 33 from shaking randomly during the extension process and causing the sampling end position to shift. Through the cooperation of the ring 44 and the air tube 33, the synchronous extension of the air tube 33 and the extension mechanism 4 is realized. When the target detection area is at a specific angle, the operator can move the extension mechanism 4 to drive the telescopic rod 42, rubber sleeve 43, ring buckle 44 and suction tube mechanism 3 to adjust the angle together until the sampling end is aligned with the target area. By moving the extension mechanism 4, the sampling direction can be adjusted to the angle of the target detection area. Throughout the extended sampling process, the mounting component 45 maintains a stable connection between the connecting column 41 and the base block 2, preventing the extension mechanism 4 from falling off under stress. The telescopic rod 42 is adjustable in length to accommodate different distance requirements, the rubber sleeve 43 ensures operational stability, and the ring buckle 44 ensures that the air tube 33 extends synchronously. Through the coordinated action of the connecting column 41, telescopic rod 42, rubber sleeve 43, ring buckle 44, and mounting component 45, gas collection is completed in conjunction with the suction tube mechanism 3.

[0021] Reference Figures 1-5 The quick-release power mechanism 5 includes a battery 51, the top of which is mounted on the bottom of the housing 1. A plug 52 is mounted on the front of the top of the battery 51. Top posts 53 are fixedly connected to the top of the battery 51. Stabilizing blocks 54 are rotatably connected to the front and rear sides of the bottom of the battery 51. The latch assembly 36 includes a card 361, the right side of which is threaded to the left side of the housing 1. Threads 362 are threaded to the inside of the card 361. The control display assembly 37 includes a screen 371, the bottom of which is fixedly connected to the front of the top of the housing 1. A button 372 is mounted on the top of the housing 1. Specifically, when the quick-release power mechanism 5 is working, the power supply is installed first. The top of the battery 51 is installed at the bottom of the outer casing 1. A plug 52 is installed on the front side of the top of the battery 51. The plug 52 connects to the power supply port inside the outer casing 1. Through the installation and cooperation of the battery 51 and the outer casing 1, and the connection of the plug 52 to the power supply port, the quick-release power mechanism 5 achieves the initial power supply effect of providing power to the sampler. Top posts 53 are fixedly connected to the top of the battery 51 around its four sides. After the battery 51 is installed, the top posts 53 abut against the inner wall of the bottom of the outer casing 1. Through the contact limit between the top posts 53 and the outer casing 1, the battery 51 is accurately positioned at the bottom of the outer casing 1, avoiding the battery 51 from shifting and causing poor contact of the plug 52. The bottom front and rear sides of the battery 51 are rotatably connected to stable... After installing the battery 51, rotate the stabilizing block 54 to make it fit against the bottom outer wall of the outer casing 1. Through the rotational connection between the stabilizing block 54 and the battery 51, and the fitting and limiting of the stabilizing block 54 and the outer casing 1, the battery 51 is firmly fixed at the bottom of the outer casing 1, preventing the battery 51 from loosening when the sampler moves. When the battery 51 needs to be replaced, rotate the stabilizing block 54 in the opposite direction to detach it from the outer casing 1, and then pull the battery 51 upwards to separate the plug 52 from the power supply port. Through the reverse rotation of the stabilizing block 54 and the separation of the plug 52, the battery 51 can be quickly disassembled. When installing a new battery 51, repeat the above installation steps. Through the docking of the plug 52 and the fixing of the stabilizing block 54, the battery 51 can be quickly installed, completing the quick replacement of the power supply. The snap-fit ​​assembly 36 is used to fix the filter 34. The right side of the clip 361 is threaded to the left side of the outer casing 1. The outer right side of the filter 34 has a slot corresponding to the clip 361. After the front side of the filter 34 is aligned with the air tube 33, the clip 361 is rotated to snap into the slot of the filter 34. The clip 361 is fixed by the threaded connection between the clip 361 and the outer casing 1, and the clip 361 is engaged with the slot of the filter 34, thus achieving the effect of initial fixation of the filter 34 and preventing the filter 34 from falling off. The clip 361 has threads 362 threaded inside on all four sides, which can be tightened. The thread 362 is positioned so that its end abuts against the outer wall of the filter 34. By screwing the thread 362 into the card 361 and tightening the thread 362 against the filter 34, the filter 34 is further secured, ensuring a seal at the connection between the filter 34 and the air tube 33 and preventing gas leakage. When disassembling the filter 34, the thread 362 is loosened to disengage from the filter 34, and then the card 361 is rotated in the opposite direction to disengage from the card slot. The loosening of the thread 362 and the disengagement of the card 361 achieve the effect of quick disassembly of the filter 34, making it easy to clean or replace the filter 34. The control display component 37 is responsible for operation and data display. The bottom of the screen 371 is fixedly connected to the top front of the housing 1. A button 372 is installed on the top of the housing 1. Pressing the button 372 can start the sampler. The operation of pressing the button 372 is connected to the signal of the control module inside the sampler, realizing the effect of controlling the sampler's operating status. The sampling process can be started or stopped. During the sampling process, the detection module inside the sampler transmits the collected gas data to the screen 371. Through the signal connection between the screen 371 and the detection module, and the display function of the screen 371, the sampling data is displayed in real time. The operator can directly view the gas composition, concentration and equipment operating parameters. When it is necessary to adjust the sampling parameters, press the button 372 of the corresponding function. The adjustment command is transmitted to the sampling module through the control module. At the same time, the adjusted parameters are displayed synchronously on the screen 371. The parameter adjustment operation of the button 372 and the parameter feedback of the screen 371 are achieved.

[0022] Reference Figures 1-4 The information transmission component 38 includes a warning light 381, the left side of which is fixedly connected to the right side of the housing 1. A data port 382 is installed in the middle of the right side of the housing 1. The mounting component 45 includes two retaining rings 451, the rear sides of which are threaded to the front side of the base block 2. Bolts 452 pass through the upper and lower sides of the two retaining rings 451. Grooves are provided on the left and right sides of the housing 1. The grooves are ergonomically designed to achieve anti-slip and anti-fall-off effects. Specifically, when the mounting component 45 is in operation, the foundation is first fixed. The rear sides of the two retaining rings 451 are threaded to the left and right sides of the front side of the base block 2. The threaded connection between the retaining rings 451 and the base block 2 achieves the initial fixing effect of the mounting component 45 on the base block 2. Then, the rear side of the connecting column 41 in the extension mechanism 4 is placed between the two retaining rings 451, so that the rotation axis of the rear side of the connecting column 41 is aligned with the inner side of the retaining rings 451. Then, the bolts 452 are inserted through the upper and lower sides of the two retaining rings 451 respectively, and the bolts 452 are tightened until the end of the bolts 452 abuts against the outer wall of the connecting column 41. The retaining rings 451 then fix the component in place. The clamping of the connecting column 41, the tightening of the bolt 452 against the connecting column 41, and the fixed connection between the retaining ring 451 and the base block 2 achieve a stable rotational connection between the connecting column 41 and the base block 2, ensuring that the extension mechanism 4 can flexibly adjust its angle around the mounting component 45 without falling off. When it is necessary to disassemble the extension mechanism 4, loosen the bolt 452 to disengage the bolt 452 from the connecting column 41, and the connecting column 41 can be removed from between the two retaining rings 451. By loosening the bolt 452 and releasing the clamping of the retaining rings 451, the extension mechanism 4 and the base block 2 can be quickly disassembled, which facilitates the maintenance and replacement of the extension mechanism 4. The left side of the warning light 381 is fixedly connected to the right side of the housing 1. The detection module inside the sampler analyzes the collected gas data in real time. When the data exceeds the preset normal range, the detection module sends an abnormal signal to the control module. After receiving the signal, the control module triggers the warning light 381 to light up. Through the signal transmission between the warning light 381 and the control module and detection module, the operator is promptly alerted when the sampling data is abnormal, so as to avoid the operator missing dangerous situations. The data port 382 is installed in the middle of the right side of the housing 1. When it is necessary to export the sampling data to an external storage or analysis device, the data cable of the external device is inserted into the data port 382. The data processing module inside the sampler transmits the data to the external device through the data port 382. Through the cooperation of the data port 382, ​​the external device, and the data processing module, the effect of stable export of sampling data is achieved. If it is necessary to update the control program of the sampler, the external device transmits the program update data to the control module of the sampler through the data port 382. The outer casing 1 has grooves on both the left and right sides. These grooves are ergonomically designed so that when the operator holds the sampler, the fingers and palm of the hand can naturally fit into the grooves. The contact between the grooves and the hand increases the friction between the hand and the outer casing 1, preventing the sampler from slipping in the hand due to sweaty hands or uneven force, thus achieving an anti-slip effect. At the same time, the contour of the grooves matches the natural shape of the hand when holding it, reducing the pressure at the contact point between the hand and the outer casing 1, reducing hand fatigue caused by prolonged holding. In addition, when the sampler is accidentally pulled, the grooves can provide a certain limit to the hand, preventing the sampler from falling out of the hand. Through the ergonomic design of the grooves and their cooperation with the hand, the effects of preventing slippage and improving holding comfort are achieved.

[0023] Working principle: First, preparations are made before starting the device. The first step is to assemble and power the quick-release power mechanism 5. The top of the battery 51 is installed on the bottom of the outer shell 1, so that the plug 52 on the front side of the top of the battery 51 is precisely connected to the power supply port inside the outer shell 1. Through the installation and cooperation of the battery 51 and the outer shell 1, and the electrical connection between the plug 52 and the power supply port, the quick-release power mechanism 5 provides initial power to the entire sampler. At the same time, the top posts 53, which are fixedly connected to the top of the battery 51, are installed against the inner wall of the bottom of the outer shell 1. Through the contact limit between the top posts 53 and the outer shell 1, the battery 51 is accurately positioned at the bottom of the outer shell 1, avoiding the battery 51 from shifting and causing poor contact of the plug 52. Then, the stabilizing blocks 54, which are rotatably connected to the front and rear sides of the bottom of the battery 51, are rotated so that the stabilizing blocks 54 fit against the outer wall of the bottom of the outer shell 1. Through the rotational connection between the stabilizing blocks 54 and the battery 51, and the fit limit between the stabilizing blocks 54 and the outer shell 1, the battery 51 is firmly fixed at the bottom of the outer shell 1, preventing the battery 51 from loosening when the sampler moves. The second step involves assembling and sealing the straw mechanism 3. The front of the interface 31 in the straw mechanism 3 is fixedly connected to the rear of the outer shell 1. A gasket 32 ​​is installed on the rear of the interface 31. One end of the air tube 33 is threadedly connected to the rear of the interface 31 via the gasket 32. Through the cooperation between the interface 31 and the gasket 32, and the threaded engagement between the air tube 33 and the interface 31, a sealed connection between the air tube 33 and the outer shell 1 is achieved, effectively preventing gas leakage during transmission. The other end of the air tube 33 is then installed and connected to the filter 34. The snap-fit ​​assembly 36 is then used to fix the filter 34. The right side of the snap-fit ​​assembly 36's clip 361 is threaded to the left side of the outer shell 1. A corresponding opening is provided on the right side of the outer wall of the filter 34 on the clip 361. The card 361 is rotated to engage with the slot of the filter 34. The initial fixation of the filter 34 is achieved by the threaded connection between the card 361 and the outer shell 1, and by the engagement between the card 361 and the slot of the filter 34, preventing the filter 34 from falling off. Then, the threads 362 connected to the internal threads around the card 361 are tightened so that the ends of the threads 362 abut against the outer wall of the filter 34. The further fixation of the filter 34 is achieved by the threaded connection between the threads 362 and the card 361, and by the tightness between the threads 362 and the filter 34, ensuring a seal at the connection between the filter 34 and the air tube 33 and preventing gas leakage. At this time, the cover 35 on the back of the filter 34 is closed to prevent impurities from entering the filter 34 during the non-sampling stage. After completing the preparation work, start the equipment. The screen 371 fixedly connected to the top front of the outer casing 1 and the button 372 installed on the top constitute the control and display component 37. When the button 372 is pressed, the button 372 sends a start signal to the control module inside the sampler. After receiving the signal, the control module starts the various components of the equipment. Through the press operation of the button 372 and the signal connection with the control module, the effect of controlling the operating status of the sampler is realized. After the equipment is started, the screen 371 receives the operating parameters transmitted by the control module and displays them in real time. The operator can check the parameters through the screen 371 to confirm that the equipment is operating normally. Through the signal connection between the screen 371 and the control module, as well as the display function of the screen 371, the effect of real-time monitoring of the equipment operating parameters is realized. If gas detection is required in areas that are difficult to access, the extension mechanism 4 located on the front side of the base block 2 must be activated. First, assemble the extension mechanism 4 with the base block 2. The mounting assembly 45 of the extension mechanism 4 includes two retaining rings 451. The rear sides of the two retaining rings 451 are threaded to the front side of the base block 2. Place the rear side of the connecting post 41 between the two retaining rings 451, aligning the rotation axis of the rear side of the connecting post 41 with the inner side of the retaining rings 451. Then, insert the bolts 452 through the upper and lower sides of the two retaining rings 451 respectively, and tighten the bolts 452 until the ends of the bolts 452 are reached. The connecting column 41 is held against the outer wall of the connecting column 41 by the clamping ring 451, the bolt 452 tightens the connecting column 41, and the clamping ring 451 is fixedly connected to the base block 2. This achieves a stable rotational connection between the connecting column 41 and the base block 2, ensuring that the extension mechanism 4 can flexibly adjust its angle around the mounting component 45 without falling off. If the sampling distance needs to be adjusted, the operator rotates the telescopic rod 42, which is threaded to the front of the connecting column 41. Since the telescopic rod 42 is threaded to the connecting column 41, it can move back and forth along the axial direction of the connecting column 41 during rotation. The threaded connection between the connecting column 41 and the telescopic rod 42 allows for adjustment of the sampling distance according to testing requirements. The operator holds the rubber sleeve 43 installed on the front outer wall of the telescopic rod 42 for adjustment. The rubber sleeve 43 increases friction with the hand. The assembly of the rubber sleeve 43 and the telescopic rod 42 ensures a stable grip on the operator, preventing slippage. Simultaneously, the end of the air tube 33 furthest from the filter 34 is passed through the ring 44 fixedly connected to the front of the rubber sleeve 43, thus constraining and fixing the air tube 33. The cooperation between the 44 and the trachea 33 enables the trachea 33 and the extension mechanism 4 to extend synchronously, preventing the trachea 33 from shaking randomly during the extension process and causing the sampling end position to shift. If the target detection area is at a specific angle, the connecting column 41 is pushed to rotate around the retaining ring 451 of the mounting component 45, which drives the telescopic rod 42, rubber sleeve 43, ring buckle 44 and fixed trachea 33 to adjust the angle together until the filter 34 is aligned with the target area. Through the rotational cooperation between the connecting column 41 and the mounting component 45, the sampling direction can be adjusted according to the angle of the target detection area. Upon entering the gas sampling stage, the operator unlocks the filter 34 using the latch assembly 36, then removes the cover 35 on the back of the filter 34, opening the gas inlet of the filter 34. The external gas to be tested smoothly enters the filter 34, where it filters the dust in the air. The filtered gas no longer carries dust into the gas pipe 33 and the sampling structure inside the outer shell 1. The filtering effect of the filter 34 prevents the sampler from becoming clogged. The filtered gas is then transported along the gas pipe 33 to the interface 31 connected to the outer shell 1, and enters the gas sampling module inside the outer shell 1 through the interface 31. The sampling module collects and analyzes the gas composition. Through the collaboration between the sampling module and the suction tube mechanism 3, the effective collection of the gas to be tested is achieved. After sampling is completed, the data processing and transmission stage begins. The information transmission component 38, located on the right side of the outer casing 1, starts working. The sampling module transmits the analyzed gas composition, concentration, and other data to the control module. The control module sends the data to the screen 371, which displays the sampling data and equipment operating status in real time. Operators can intuitively monitor the sampling process through the screen 371. The signal connection between the screen 371 and the sampling module enables real-time display of the sampling data. Furthermore, if the sampling data exceeds the preset normal range, the control module sends an abnormal signal to the warning light 381. Upon receiving the signal, the warning light 381 illuminates. This signal is transmitted between the warning light 381 and the control module, and the sampling module... The signal transmission enables timely alerts to operators when sampling data is abnormal, preventing the omission of dangerous situations. If it is necessary to export the sampling data to an external storage or analysis device, the data cable of the external device is inserted into the data port 382 installed in the middle right side of the casing 1. The data processing module inside the sampler transmits the data to the external device through the data port 382. Through the cooperation of the data port 382, ​​the external device, and the data processing module, the sampling data can be stably exported. If it is necessary to update the control program of the sampler, the external device transmits the program update data to the control module through the data port 382. The bidirectional data transmission function of the data port 382 enables the sampler program to be updated. When the power detection structure of the quick-release power mechanism 5 indicates insufficient power, the power supply is replaced. The stabilizing block 54 at the bottom of the battery 51 is rotated in the reverse direction to detach the stabilizing block 54 from the bottom outer wall of the housing 1. The reverse rotation of the stabilizing block 54 releases the fixing limit on the battery 51. Then, the battery 51 is pulled upward to separate the plug 52 at the top of the battery 51 from the power supply port inside the housing 1. The separation of the plug 52 and the removal of the battery 51 achieve the effect of quick disassembly of the battery 51. The initial installation steps are repeated with a new battery 51. The installation and fixing of the new battery 51 achieves the effect of quick battery replacement, ensuring continuous operation of the equipment. The left and right sides of the outer shell 1 are provided with ergonomically designed grooves. During the entire sampling operation, when the operator holds the outer shell 1, the fingers and palms of the hand can naturally fit into the grooves. The contact between the grooves and the hand increases the friction between the hand and the outer shell 1, preventing the sampler from slipping due to sweaty hands or uneven force, thus achieving an anti-slip effect. At the same time, the contour of the groove matches the natural shape of the hand, reducing the pressure at the contact point between the hand and the outer shell 1, reducing hand fatigue from holding for a long time. In addition, when the sampler is accidentally pulled, the groove can restrain the hand and prevent the sampler from falling out of the hand. Through the ergonomic design of the groove and the cooperation of the hand, the effects of preventing slippage and improving grip comfort are achieved. The quick-release power supply mechanism 5 ensures a continuous power supply, the suction tube mechanism 3 enables sealed gas transmission and filtration, the extension mechanism 4 expands the sampling range, the control and display component 37 enables operation and data monitoring, and the information transmission component 38 completes abnormal warnings and data interaction, together achieving efficient, stable, and safe gas sampling in chemical safety testing scenarios.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas sampler for chemical safety detection, comprising a housing (1), characterized in that: The front side of the outer shell (1) is provided with a bottom block (2), and the rear side of the outer shell (1) is provided with a suction tube mechanism (3). The suction tube mechanism (3) is used to filter the dust in the air to prevent the sampler from clogging. The front side of the bottom block (2) is provided with an extension mechanism (4). The extension mechanism (4) makes it convenient for operators to inspect places that are inconvenient to enter. The bottom of the outer shell (1) is provided with a quick-release power supply mechanism (5). The straw mechanism (3) includes an interface (31), the front side of which is fixedly connected to the rear side of the outer shell (1). A gasket (32) is installed on the rear side of the interface (31). An air tube (33) is threadedly connected to the rear side of the gasket (32). A filter (34) is installed on the rear side of one end of the air tube (33), and the front side of the other end is threadedly connected to the rear side of the interface (31) through the gasket (32). A cover (35) is installed on the rear side of the filter (34). A buckle assembly (36) is provided on the right side of the outer wall of the filter (34). A control display assembly (37) is provided on the top of the outer shell (1), and an information transmission assembly (38) is provided on the right side of the outer shell (1).

2. The gas sampler for chemical safety detection according to claim 1, characterized in that: The extension mechanism (4) includes a connecting column (41), the rear side of which is rotatably connected to the front side of the base block (2) via an installation assembly (45). A telescopic rod (42) is threadedly connected to the front side of the connecting column (41), a rubber sleeve (43) is installed on the outer wall of the front side of the telescopic rod (42), and a ring buckle (44) is fixedly connected to the front side of the rubber sleeve (43). An installation assembly (45) is provided on the front side of the base block (2).

3. The gas sampler for chemical safety detection according to claim 1, characterized in that: The quick-release power mechanism (5) includes a battery (51), the top of which is mounted on the bottom of the housing (1), a plug (52) is mounted on the front side of the top of the battery (51), top posts (53) are fixedly connected to the top of the battery (51) around its perimeter, and stabilizing blocks (54) are rotatably connected to the front and rear sides of the bottom of the battery (51).

4. The gas sampler for chemical safety detection according to claim 1, characterized in that: The buckle assembly (36) includes a card (361), the right side of which is threaded to the left side of the outer casing (1), and the inside of the card (361) is threaded with threads (362) on all four sides.

5. The gas sampler for chemical safety detection according to claim 1, characterized in that: The control display component (37) includes a screen (371), the bottom of which is fixedly connected to the top front side of the housing (1), and a button (372) is installed on the top of the housing (1).

6. The gas sampler for chemical safety detection according to claim 1, characterized in that: The information transmission component (38) includes a warning light (381), the left side of which is fixedly connected to the right side of the housing (1), and a data port (382) is installed in the middle of the right side of the housing (1).

7. The gas sampler for chemical safety detection according to claim 2, characterized in that: The mounting assembly (45) includes two retaining rings (451), the rear sides of which are threaded to the front side of the base block (2), and bolts (452) penetrate the upper and lower sides of the two retaining rings (451).

8. The gas sampler for chemical safety detection according to claim 1, characterized in that: The outer shell (1) has grooves on both the left and right sides. These grooves are ergonomically designed and can achieve anti-slip and anti-fall-off effects.

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