Portable explosion-proof atmosphere sampling instrument

Abstract

The utility model discloses a portable explosion-proof atmosphere sampling instrument which comprises a top cover cylinder and a bottom cylinder, the bottom cylinder is arranged at the bottom end of the top cover cylinder, a movable cover is movably installed on the outer wall of the top cover cylinder, a movable seat is movably installed at the center position of the bottom end of the bottom cylinder on one side of the movable cover, a threaded rod is installed at the bottom end of the movable seat, and the threaded rod is movably installed on the bottom end of the top cover cylinder. The bottom end of the threaded rod is in threaded connection with a threaded sleeve frame, and the threaded rod extends out of the threaded sleeve frame. According to the explosion-proof atmosphere sampling instrument, the explosion-proof atmosphere sampling instrument can be conveniently unfolded and stored, the explosion-proof atmosphere sampling instrument can be conveniently carried and used when going out, convenient rotary multi-group collection is facilitated, the number of samples during collection is increased, and the detection accuracy and the convenience of atmosphere multi-sample collection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of samplers, in particular to a portable explosion-proof air sampler. Background Technique

[0002] An air sampler is a device used to collect and analyze gases and particulate matter in the atmosphere. Its main function is to obtain air samples for related work such as environmental monitoring, air quality assessment, climate research, and pollution control. It can conveniently collect various pollutants in the atmosphere, including particulate matter, organic matter, inorganic matter, gaseous pollutants, etc. It can work under various environmental conditions and can correctly collect and store air samples in the atmosphere to ensure the reliability of data. It is usually composed of modules that are easy to maintain and replace, and damaged parts can be quickly repaired or replaced to reduce maintenance costs.

[0003] As disclosed in a portable air sampler with the authorization announcement number CN215985389U, it includes a base. The lower end surface of the base is fixedly connected with moving wheels around it. The middle part of the upper end surface of the base is fixedly connected with a protection box. The middle part of the inner cavity of the protection box is fixedly connected with a lifting plate through a lifting mechanism. Protective mechanisms are arranged on the left and right sides of the upper end surface of the lifting plate. A sampler body is placed in the middle of the upper end surface of the lifting plate. Folding mechanisms are arranged on the left and right side walls of the inner cavity of the protection box. The right side of the bottom surface of the inner cavity of the protection box is fixedly connected with a storage battery;

[0004] Although it solves the problem that the air sampling equipment in the related technology lacks corresponding protection devices, resulting in the air sampler being easily damaged during transportation, it does not solve the problem that the existing sampler is not convenient for convenient deployment and storage during use, greatly affecting the convenience during outdoor carrying and use, not being convenient for convenient rotary multi-group collection, greatly affecting the number of samples during collection, affecting the detection accuracy and the convenience of collecting multiple air samples. Content of the Utility Model

[0005] The purpose of the utility model is to provide a portable explosion-proof air sampler to solve the problems mentioned in the above background technique, that is, the sampler is not convenient for convenient deployment and storage, affecting the convenience during outdoor carrying and use, not being convenient for convenient rotary multi-group collection, affecting the number of samples during collection, affecting the detection accuracy and the convenience of collecting multiple air samples.

[0006] To achieve the above object, the utility model provides the following technical solution: A portable explosion-proof air sampler, comprising a top cover cylinder and a bottom cylinder. The bottom end of the top cover cylinder is provided with a bottom cylinder. An activity cover is movably installed on the outer wall of the top cover cylinder. At the center position of the bottom end of the bottom cylinder on one side of the activity cover, an activity seat is movably installed. A threaded rod is installed at the bottom end of the activity seat. The bottom end of the threaded rod is threadedly connected with a threaded sleeve frame, and the threaded rod extends to the outside of the threaded sleeve frame. Three groups of linkage arms are installed at equal intervals on the outer wall of the threaded sleeve frame. A support sleeve frame is movably installed at the bottom end of the threaded rod. Three groups of support arms are installed at equal intervals on the outer wall of the support sleeve frame. The top ends of the linkage arms are all installed with upper clamping shafts, and the linkage arms are connected to the threaded sleeve frame through the upper clamping shafts.

[0007] Preferably, lower clamping shafts are provided at the bottom ends of the linkage arms, and the linkage arms are all connected to the support arms through the lower clamping shafts. Upper support shafts are installed at the top ends of the support arms, and the support arms are all connected to the support sleeve frame through the upper support shafts. Lower feet are provided at the bottom ends of the support arms. Lower support shafts are provided at the top ends of the lower feet, and the lower feet are all connected to the support arms through the lower support shafts.

[0008] Preferably, a transmission shaft is movably installed at the center position of the bottom end of the top cover cylinder. Three groups of rotating frames are symmetrically sleeved on the surface of the transmission shaft. Five groups of collection bottles are annularly arranged on the outer wall of the rotating frame.

[0009] Preferably, upper solenoid valves are installed at the top ends of the collection bottles. Upper conical covers are provided at the top ends of the upper solenoid valves. An intake pipe is installed at the top end of the top cover cylinder above the upper conical cover, and the intake pipe extends to the outside of the top cover cylinder, and the intake pipe is slidably connected to one of the upper conical covers.

[0010] Preferably, a side electric push rod is installed at the top end of the bottom cylinder below the intake pipe. The output end of the side electric push rod is installed with a negative pressure machine. An exhaust pipe is installed on the outer wall of the negative pressure machine, and the exhaust pipe extends to the outside of the bottom cylinder. Lower solenoid valves are provided at the bottom ends of the collection bottles above the exhaust pipe. Lower conical covers are provided at the bottom ends of the lower solenoid valves.

[0011] Preferably, a lifting frame is provided outside the bottom cylinder below the rotating frame. A servo motor is installed on the outer wall of the lifting frame. A first gear is provided at the output end of the servo motor. A second gear is sleeved on the outer wall of the transmission shaft on one side of the first gear, and the second gear meshes with the first gear.

[0012] Preferably, first electric push rods are symmetrically installed at the top end of the bottom cylinder below the lifting frame. Brackets are provided at the output ends of the first electric push rods, and the brackets are all connected to the lifting frame. Limit sliders are provided at the top ends of the lifting frame above the brackets, and the limit sliders are slidably connected to the rotating frame.

[0013] Preferably, a remote controller is installed at the top center of the top cover tube, and the output end of the remote controller is electrically connected to the input ends of the side electric push rod, the servo motor, the first electric push rod, the upper solenoid valve, and the lower conical cover.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the sampler not only realizes the convenient unfolding and storage of the explosion-proof atmospheric sampler, but also facilitates the carrying and use of the explosion-proof atmospheric sampler outside, facilitates the convenient rotating multi-group collection, increases the number of samples collected, and improves the accuracy of detection and the convenience of collecting multiple atmospheric samples;

[0015] (1) By rotating the movable seat, the bottom tube movably supports the movable seat, the movable seat drives the threaded rod to rotate, the threaded rod drives the threaded sleeve to move downward, the threaded sleeve drives the linkage arm to move through the upper clamping shaft, the three groups of linkage arms move synchronously, the linkage arm drives the support arm to move through the lower clamping shaft, the three groups of support arms move synchronously, the support arm rotates with the upper support shaft as the axis, the support arm drives the foot to move through the lower support shaft, so as to facilitate the support arm to expand and support the bottom tube. When it needs to be stored, the threaded rod is rotated anyway to facilitate the three groups of support arms to be close together for storage, so as to facilitate carrying, thereby realizing the convenient expansion and storage of the explosion-proof atmospheric sampler, and facilitating the explosion-proof atmospheric sampler to be carried out and used;

[0016] (2) The bracket is driven to move upward by the first electric push rod, and at the same time, the bracket pushes the lifting frame upward. The lifting frame pushes the rotating frame upward through the limit slider and the transmission shaft. The rotating frame drives the collecting bottle to move synchronously. The collecting bottle drives the upper solenoid valve and the upper conical cover to move synchronously. The air intake pipe is inserted into the interior of the upper conical cover. The side electric push rod drives the negative pressure machine to move upward. At the same time, the negative pressure machine drives its own air pipe to contact the lower conical cover. The negative pressure machine extracts the gas through the exhaust pipe, and negative pressure is generated inside the collecting bottle. The external gas enters the upper conical cover, the upper solenoid valve, the collecting bottle, the lower solenoid valve, the lower conical cover, and the negative pressure machine through the air intake pipe. When a group of collecting bottles is collected, the upper solenoid valve and the lower solenoid valve are closed to prevent the gas inside the collecting bottle from overflowing, and the remote controller is operated to start. The side electric push rod is opened for reset. At this time, the air pipe of the negative pressure machine itself is separated from the lower conical cover. The remote controller is operated to open the first electric push rod for reset. The rotating frame drives the collecting bottle and the upper conical cover to move, and the upper conical cover is separated from the air inlet pipe. When another group of collecting bottles is needed for collection, the servo motor drives the first gear to rotate, and the second gear drives the rotating frame to rotate through the transmission shaft. The limit slider supports the rotating frame for sliding support. The rotating frame drives a group of collecting bottles to rotate a certain angle to facilitate gas collection. In this way, multiple groups of collecting bottles can be collected, realizing the convenient rotating multi-group collection of the explosion-proof atmospheric sampler, increasing the number of samples during collection, facilitating the later multi-sample detection to improve the accuracy of detection, and improving the convenience of atmospheric multi-sample collection. Brief Description of the Drawings

[0017] Figure 1 It is a three - dimensional structure schematic diagram of the present utility model;

[0018] Figure 2 It is a front - view structure schematic diagram of the present utility model;

[0019] Figure 3 It is a three - dimensional structure schematic diagram of the support arm of the present utility model;

[0020] Figure 4 It is a three - dimensional structure schematic diagram of the rotating frame of the present utility model;

[0021] Figure 5 It is a three - dimensional structure schematic diagram of the first gear of the present utility model;

[0022] Figure 6 It is a three - dimensional structure schematic diagram of the lifting frame of the present utility model.

[0023] In the figure: 1. Top cover cylinder; 2. Bottom cylinder; 3. Remote controller; 4. Air inlet pipe; 5. Movable cover; 6. Rotating frame; 7. Collection bottle; 8. Movable seat; 9. Threaded sleeve frame; 10. Threaded rod; 11. Support sleeve frame; 12. Upper clamping shaft; 13. Linkage arm; 14. Lower clamping shaft; 15. Support arm; 16. Upper support shaft; 17. Lower support shaft; 18. Side electric push rod; 19. Negative pressure machine; 20. Exhaust pipe; 21. Servo motor; 22. First gear; 23. Transmission shaft; 24. Second gear; 25. First electric push rod; 26. Bracket; 27. Lifting frame; 28. Limit slider; 29. Floor feet; 30. Upper solenoid valve; 31. Upper conical cover; 32. Lower solenoid valve; 33. Lower conical cover. Detailed Description of the Preferred Embodiment

[0024] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present utility model as follows.

[0025] Please refer to Figure 1-6The utility model provides an embodiment: a portable explosion-proof atmospheric sampler, comprising a top cover tube 1 and a bottom tube 2, the bottom end of the top cover tube 1 is provided with a bottom tube 2, a movable cover 5 is movably installed on the outer wall of the top cover tube 1, a movable seat 8 is movably installed at the center position of the bottom end of the bottom tube 2 on one side of the movable cover 5, a threaded rod 10 is installed at the bottom end of the movable seat 8, a threaded sleeve 9 is threadedly connected to the bottom end of the threaded rod 10, and the threaded rod 10 extends to the outside of the threaded sleeve 9, three groups of linkage arms 13 with equal spacing are installed on the outer wall of the threaded sleeve 9, a support sleeve 11 is movably installed at the bottom end of the threaded rod 10, and three groups of support arms 15 with equal spacing are installed on the outer wall of the support sleeve 11, and an upper clamping shaft 12 is installed on the top of the linkage arm 13, and the linkage arm 13 is connected to the threaded sleeve 9 through the upper clamping shaft 12;

[0026] The bottom end of the linkage arm 13 is provided with a lower clamping shaft 14, and the linkage arm 13 is connected to the support arm 15 through the lower clamping shaft 14, the top end of the support arm 15 is installed with an upper support shaft 16, and the support arm 15 is connected to the support sleeve 11 through the upper support shaft 16, the bottom end of the support arm 15 is provided with a foot 29, the top end of the foot 29 is provided with a lower support shaft 17, and the foot 29 is connected to the support arm 15 through the lower support shaft 17;

[0027] By rotating the movable seat 8, the bottom tube 2 movably supports the movable seat 8, and the movable seat 8 drives the threaded rod 10 to rotate. Under the threaded cooperation between the threaded rod 10 and the threaded sleeve 9, and under the movably supported by the threaded rod 10 and the supporting sleeve 11, the threaded rod 10 drives the threaded sleeve 9 to move downward, and the threaded sleeve 9 drives the linkage arm 13 to move through the upper clamping shaft 12, and the three groups of linkage arms 13 move synchronously, and the linkage arm 13 drives the support arm 15 to move through the lower clamping shaft 14, and the three groups of support arms 15 move synchronously, and the support arm 15 rotates with the upper support shaft 16 as the axis, and the support arm 15 drives the foot 29 to move through the lower support shaft 17, so as to facilitate the expansion of the support arm 15 to support the bottom tube 2. When it needs to be stored, the threaded rod 10 is rotated anyway to facilitate the three groups of support arms 15 to be close together for storage, so as to facilitate carrying, thereby realizing the convenient expansion and storage of the explosion-proof atmospheric sampler, and facilitating the carrying and use of the explosion-proof atmospheric sampler;

[0028] A transmission shaft 23 is movably installed at the center of the bottom end of the top cover tube 1, and three groups of rotating frames 6 are symmetrically mounted on the surface of the transmission shaft 23. Five groups of collecting bottles 7 are annularly arranged at equal intervals on the outer wall of the rotating frame 6. The top of the collecting bottles 7 are all equipped with upper solenoid valves 30, and the top of the upper solenoid valves 30 are all equipped with upper conical covers 31. An air intake pipe 4 is installed at the top of the top cover tube 1 above the upper conical cover 31, and the air intake pipe 4 extends to the outside of the top cover tube 1, and the air intake pipe 4 is slidably connected to a group of upper conical covers 31;

[0029] At the top end of the bottom cylinder 2 below the intake pipe 4, a side electric push rod 18 is installed. The side electric push rod 18 plays a role in power driving. At the output end of the side electric push rod 18, a negative pressure machine 19 is installed. An exhaust pipe 20 is installed on the outer wall of the negative pressure machine 19, and the exhaust pipe 20 extends to the outside of the bottom cylinder 2. At the bottom end of the collection bottle 7 above the exhaust pipe 20, lower solenoid valves 32 are provided. At the bottom end of the lower solenoid valves 32, lower conical covers 33 are provided. Outside the bottom cylinder 2 below the rotating frame 6, a lifting frame 27 is provided. A servo motor 21 is installed on the outer wall of the lifting frame 27. The servo motor 21 plays a role in power driving. At the output end of the servo motor 21, a first gear 22 is provided. A second gear 24 is sleeved on the outer wall of the transmission shaft 23 on one side of the first gear 22, and the second gear 24 meshes with the first gear 22;

[0030] On the top end of the bottom cylinder 2 below the lifting frame 27, first electric push rods 25 are symmetrically installed. The first electric push rods 25 play a role in power driving. At the output ends of the first electric push rods 25, brackets 26 are provided, and the brackets 26 are all connected to the lifting frame 27. On the top end of the lifting frame 27 above the brackets 26, limit sliders 28 are provided, and the limit sliders 28 are slidably connected to the rotating frame 6. At the center position of the top end of the top cover cylinder 1, a remote controller 3 is installed, and the output end of the remote controller 3 is electrically connected to the input ends of the side electric push rod 18, the servo motor 21, the first electric push rods 25, the upper solenoid valve 30, and the lower conical cover 33;

[0031] After the sampler is fixed, the staff member pulls the movable cover 5 to change the movable cover 5 from the closed state to the open state to facilitate the observation of the inside of the top cover cylinder 1. The bottom cylinder 2, the movable cover 5 and the top cover cylinder 1 cooperate to play a role in shielding and explosion protection. By clamping multiple groups of collection bottles 7 into the inside of the rotating frame 6, when it is necessary to sample a group of collection bottles 7, the remote controller 3 is operated to drive the first electric push rod 25. The bottom cylinder 2 supports the first electric push rod 25. The first electric push rod 25 drives the bracket 26 to move upward. At the same time, the bracket 26 pushes the lifting frame 27 upward. The lifting frame 27 pushes the rotating frame 6 to move upward through the limit slider 28 and the transmission shaft 23. The rotating frame 6 drives the collection bottle 7 to move synchronously. The collection bottle 7 drives the upper solenoid valve 30 and the upper conical cover 31 to move synchronously. The air inlet pipe 4 is clamped into the inside of the upper conical cover 31. The remote controller 3 is operated to start the side electric push rod 18. The bottom cylinder 2 supports the side electric push rod 18. The side electric push rod 18 drives the negative pressure machine 19 to move upward. At the same time, the negative pressure machine 19 drives its own air pipe to contact the lower conical cover 33. The remote controller 3 is operated to start the negative pressure machine 19. The negative pressure machine 19 extracts the gas through the exhaust pipe 20. A negative pressure is generated inside the collection bottle 7. The external gas enters the inside of the upper conical cover 31, the upper solenoid valve 30, the collection bottle 7, the lower solenoid valve 32, the lower conical cover 33, and the negative pressure machine 19 through the air inlet pipe 4. When a group of collection bottles 7 is collected, the upper solenoid valve 30 and the lower solenoid valve 32 are closed to prevent the gas inside the collection bottle 7 from overflowing. The remote controller 3 is operated to open the side electric push rod 18 for reset. At this time, the air pipe of the negative pressure machine 19 is separated from the lower conical cover 33. The remote controller 3 is operated to open the first electric push rod 25 for reset. The rotating frame 6 drives the collection bottle 7 and the upper conical cover 31 to move. The upper conical cover 31 is separated from the air inlet pipe 4. When it is necessary to collect another group of collection bottles 7, the remote controller 3 is operated to open the servo motor 21. The servo motor 21 drives the first gear 22 to rotate. Under the meshing of the first gear 22 and the second gear 24, the second gear 24 is driven to rotate. The second gear 24 drives the rotating frame 6 to rotate through the transmission shaft 23. The limit slider 28 slidably supports the rotating frame 6. The rotating frame 6 drives a group of collection bottles 7 to rotate a certain angle to facilitate the collection of gas. In the same way, it is convenient to collect multiple groups of collection bottles 7, realizing the convenient rotary multi-group collection of the explosion-proof air sampler, increasing the number of samples during collection, facilitating the later multi-sample detection to improve the detection accuracy, and improving the convenience of the air multi-sample collection.

[0032] Working principle: When in use, an external power supply is connected. First, the staff rotates the movable seat 8, and the bottom tube 2 supports the movable seat 8. The movable seat 8 drives the threaded rod 10 to rotate, and the threaded rod 10 drives the threaded sleeve 9 to move downward. The threaded sleeve 9 drives the linkage arm 13 to move through the upper clamping shaft 12. The three groups of linkage arms 13 move synchronously. The linkage arm 13 drives the support arm 15 to move through the lower clamping shaft 14. The three groups of support arms 15 move synchronously. The support arm 15 rotates with the upper support shaft 16 as the axis. The support arm 15 drives the foot 29 to move through the lower support shaft 17 to facilitate the support arm 15 to expand and support the bottom tube 2. When it needs to be stored, the threaded rod 10 is rotated anyway. To facilitate the three groups of support arms 15 to be brought together for storage and to facilitate carrying, the staff pulls the movable cover 5 to change the movable cover 5 from a closed state to an open state to facilitate observation of the inside of the top cover tube 1. The bottom tube 2, the movable cover 5 and the top cover tube 1 cooperate to play a role in shielding and explosion-proofing. By inserting multiple groups of collecting bottles 7 into the interior of the rotating frame 6, when a group of collecting bottles 7 needs to be sampled, the first electric push rod 25 drives the bracket 26 to move upward, and the bracket 26 pushes the lifting frame 27 upward. The lifting frame 27 pushes the rotating frame 6 to move upward through the limiting slider 28 and the transmission shaft 23, and the rotating frame 6 drives the collecting bottle 7 to move synchronously, and the collecting bottle 7 drives the upper solenoid valve 30 and the upper conical cover 31 move synchronously, the air intake pipe 4 is stuck in the interior of the upper conical cover 31, the side electric push rod 18 drives the negative pressure machine 19 to move upward, and at the same time, the negative pressure machine 19 drives its own air pipe to contact the lower conical cover 33, and the negative pressure machine 19 extracts the gas through the exhaust pipe 20, and negative pressure is generated inside the collection bottle 7. The external gas enters the upper conical cover 31, the upper solenoid valve 30, the collection bottle 7, the lower solenoid valve 32, the lower conical cover 33, and the negative pressure machine 19 through the air intake pipe 4. When a group of collection bottles 7 are collected, the upper solenoid valve 30 and the lower solenoid valve 32 are closed to prevent the gas inside the collection bottle 7 from overflowing, and the remote controller 3 is operated to open the side electric push rod 1 8 is reset, at which time the air pipe of the negative pressure machine 19 itself is separated from the lower conical cover 33, and the remote controller 3 is operated to open the first electric push rod 25 for reset, and the rotating frame 6 drives the collecting bottle 7 and the upper conical cover 31 to move, and the upper conical cover 31 is separated from the air inlet pipe 4. When another group of collecting bottles 7 is needed for collection, the servo motor 21 drives the first gear 22 to rotate, and the second gear 24 drives the rotating frame 6 to rotate through the transmission shaft 23, and the limiting slider 28 slides and supports the rotating frame 6. The rotating frame 6 drives a group of collecting bottles 7 to rotate a certain angle to facilitate the collection of gas. In the same way, it is convenient for multiple groups of collecting bottles 7 to collect and complete the use of the sampler.

[0033] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model by using the above-disclosed technical content. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A portable explosion-proof air sampler, comprising a top cover tube (1) and a bottom tube (2), characterized in that: A bottom tube (2) is provided at the bottom end of the top cover tube (1), a movable cover (5) is movably mounted on the outer wall of the top cover tube (1), a movable seat (8) is movably mounted at the center position of the bottom end of the bottom tube (2) on one side of the movable cover (5), a threaded rod (10) is mounted at the bottom end of the movable seat (8), the bottom end of the threaded rod (10) is threadedly connected to a threaded sleeve (9), and the threaded rod (10) extends to the outside of the threaded sleeve (9), and three groups of linkage arms (13) are mounted on the outer wall of the threaded sleeve (9) at equal intervals, a support sleeve (11) is movably mounted at the bottom end of the threaded rod (10), and three groups of support arms (15) are mounted on the outer wall of the support sleeve (11) at equal intervals, and upper clamping shafts (12) are mounted on the top ends of the linkage arms (13), and the linkage arms (13) are connected to the threaded sleeve (9) via the upper clamping shaft (12).

2. A portable explosion-proof air sampler according to claim 1, characterized in that: The bottom end of the linkage arm (13) is provided with a lower clamping shaft (14), and the linkage arm (13) is connected to the support arm (15) through the lower clamping shaft (14); the top end of the support arm (15) is installed with an upper support shaft (16), and the support arm (15) is connected to the support sleeve (11) through the upper support shaft (16); the bottom end of the support arm (15) is provided with a foot (29), the top end of the foot (29) is provided with a lower support shaft (17), and the foot (29) is connected to the support arm (15) through the lower support shaft (17).

3. A portable explosion-proof air sampler according to claim 1, characterized in that: A transmission shaft (23) is movably mounted at the center of the bottom end of the top cover cylinder (1), and three groups of rotating frames (6) are symmetrically mounted on the surface of the transmission shaft (23). Five groups of collecting bottles (7) are arranged in an annular manner at equal intervals on the outer wall of the rotating frame (6).

4. A portable explosion-proof air sampler according to claim 3, characterized in that: The top of each of the collecting bottles (7) is provided with an upper solenoid valve (30), the top of each of the upper solenoid valves (30) is provided with an upper conical cover (31), the top of the top cover tube (1) above the upper conical cover (31) is provided with an air intake pipe (4), the air intake pipe (4) extends to the outside of the top cover tube (1), and the air intake pipe (4) is slidably connected to a group of upper conical covers (31).

5. A portable explosion-proof air sampler according to claim 4, characterized in that: A side electric push rod (18) is installed at the top of the bottom tube (2) below the air inlet pipe (4), a negative pressure machine (19) is installed at the output end of the side electric push rod (18), an exhaust pipe (20) is installed on the outer wall of the negative pressure machine (19), and the exhaust pipe (20) extends to the outside of the bottom tube (2), and a lower solenoid valve (32) is provided at the bottom end of the collecting bottle (7) above the exhaust pipe (20), and a lower conical cover (33) is provided at the bottom end of the lower solenoid valve (32).

6. A portable explosion-proof air sampler according to claim 3, characterized in that: A lifting frame (27) is arranged outside the bottom cylinder (2) below the rotating frame (6); a servo motor (21) is mounted on the outer wall of the lifting frame (27); a first gear (22) is arranged at the output end of the servo motor (21); a second gear (24) is mounted on the outer wall of a transmission shaft (23) on one side of the first gear (22); and the second gear (24) is meshed with the first gear (22).

7. A portable explosion-proof air sampler according to claim 6, characterized in that: A first electric push rod (25) is symmetrically mounted on the top of the bottom cylinder (2) below the lifting frame (27); a bracket (26) is provided at the output end of each of the first electric push rods (25); and the bracket (26) is connected to the lifting frame (27); a limit slider (28) is provided on the top of each of the lifting frames (27) above the bracket (26); and the limit slider (28) is slidably connected to the rotating frame (6).

8. A portable explosion-proof air sampler according to claim 1, characterized in that: A remote controller (3) is installed at the center of the top end of the top cover cylinder (1), and the output end of the remote controller (3) is electrically connected to the input ends of the side electric push rod (18), the servo motor (21), the first electric push rod (25), the upper solenoid valve (30), and the lower conical cover (33).

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