Comprehensive sampler for ambient air

Abstract

The utility model relates to the technical field of air comprehensive sampling, in particular to an environment air comprehensive sampler which comprises a sampling main pipe, the middle of the sampling main pipe is fixedly sleeved with a middle fixing ring, and a fixing transverse plate is fixedly arranged on the outer side of the middle fixing ring through a bolt; a sampling pump is fixedly arranged on the inner side of the end, away from the middle fixing ring, of the fixing transverse plate, connecting pipes are arranged on the two sides of the sampling pump, and the end, away from the sampling pump, of the connecting pipe above the sampling pump communicates with an air inlet pipe. The air inlet pipe and the air outlet pipe are arranged on the two sides of the sampling pump, the non-return plate and other parts are arranged at the bottom of the air outlet pipe, ambient air is introduced into the sampling pipeline through the sampling head, then the air is sucked into equipment through the sampling pump, and after sampled air enters the pipeline, the air is prevented from flowing back under the action of the non-return plate; meanwhile, external gas is prevented from being mixed, the representativeness of an air sample is guaranteed, and the effect of reducing the later comprehensive judgment error of air is achieved.

Description

Technical Field

[0001] This application relates to the technical field of integrated air sampling, and in particular to an ambient air integrated sampler. Background Technology

[0002] Integrated air sampling refers to the process of using specialized equipment to collect various pollutants in the air, such as particulate matter, gases, and volatile organic compounds, in order to monitor and analyze air quality.

[0003] A search revealed Chinese Patent Publication No. CN 212513859 U, which discloses an integrated ambient air sampler. The sampler includes a support mechanism, a sampling mechanism, a locking mechanism, and a fixing mechanism. The support mechanism comprises a support frame, a support platform, and lightning rods. A matching support platform is fixedly connected to the top of the support frame, and symmetrically arranged lightning rods are fixedly connected to the left and right sides of the top of the support platform. The sampling mechanism includes a support rod, a mounting base, and a sampler body. The mounting base is fixedly connected to the top of the support rod, and a matching sampler body is mounted on the top of the mounting base. This invention, through the cooperation of the support mechanism, sampling mechanism, locking mechanism, and fixing mechanism, realizes an integrated ambient air sampler. This facilitates the assembly and disassembly of the sampler installed at height, thereby simplifying operations at height, reducing the time spent working at height, and ultimately lowering the risks associated with working at height.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Since air is always present and has fluidity, during the sampling process, the flowing air mixes with the sampled air, causing the sample to affect the subsequent judgment of air quality, thereby reducing the accuracy of the air sampler during use, increasing the workload of air sampling, and reducing the practicality of the sampler. Utility Model Content

[0005] To address the problems mentioned in the background section, this application provides an integrated ambient air sampler.

[0006] This application provides an ambient air integrated sampler, which adopts the following technical solution: it includes a sampling main pipe, a central fixing ring fixedly sleeved in the middle of the sampling main pipe, a fixing cross plate fixedly installed on the outer side of the central fixing ring by bolts, a sampling pump fixedly installed on the inner side of the end of the fixing cross plate away from the central fixing ring, connecting pipes on both sides of the sampling pump, an air inlet pipe connected to the connecting pipe above the sampling pump at the end away from the sampling pump, the outer side of the other end of the air inlet pipe extending into the interior of the sampling main pipe and sleeved with a circular plate, the outer side of the circular plate fixedly installed at the top position of the inner wall of the sampling main pipe, an air outlet pipe connected to the connecting pipe at the bottom of the sampling pump, the outer side of the other end of the air outlet pipe extending into the interior of the sampling main pipe and sleeved with a circular ring, the outer side of the circular ring fixedly installed at the bottom position of the inner wall of the sampling main pipe.

[0007] A conical cylinder is fixedly installed at the right end of the bottom of the sampling main pipe. The end of the conical cylinder away from the sampling main pipe is connected to a connecting pipe. A right-side check ring is fixedly installed at the right end of the inner wall of the connecting pipe. A sealing cylinder is slidably installed on the inner wall of the circular hole in the middle of the right-side check ring. A movable shaft is fixedly inserted into the middle of the sealing cylinder. A plug is fixedly sleeved on the outer side of the left end of the movable shaft. The plug is located at the left end inside the connecting pipe. Buckles are symmetrically installed on the outer side of the vertical position in the middle of the sampling main pipe. The outer side of the buckles is secured by bolt threads.

[0008] Optionally, a top fixing plate is fixedly installed on the outer side of the air inlet pipe near the top position, and the outer side of the top fixing plate is fixedly installed on the inner wall of the sampling main pipe near the top position. A bottom fixing plate is fixedly installed on the outer side of the air outlet pipe near the bottom position, and the outer side of the bottom fixing plate is fixedly installed on the inner wall of the sampling main pipe near the bottom position in the vertical direction.

[0009] Optionally, a tapered amplifying tube is fixedly installed at the top left end of the sampling main tube. The sampling main tube is set in a "Z" shape. An air vent plate is fixedly installed at the bottom of the inner wall of the vertical position of the sampling main tube. An air vent hole is provided in the middle of the air vent plate. A support plate is fixedly installed at one end of the bottom of the air vent plate. A check plate is rotatably installed in the middle of the support plate via a horizontal axis. A torsion spring is installed between the check plate and the support plate.

[0010] Optionally, a left check ring is fixedly installed on the inner wall of the connecting pipe near the left end. A circular hole is provided in the middle of the left check ring. The diameter of the circular hole in the middle of the left check ring is larger than the diameter of the moving shaft and smaller than the diameter of the block. A spring is fixedly installed on the right side of the left check ring. The end of the spring away from the left check ring is fixedly installed on the left side of the sealing cylinder.

[0011] Optionally, the outer side of the sealing cylinder is slidably connected to the inner wall of the circular hole in the middle of the right check ring, the outer diameter of the sealing cylinder is the same as the inner diameter of the circular hole in the middle of the right check ring, and the thickness of the sealing cylinder is greater than the thickness of the right check ring.

[0012] Optionally, a connecting plate is fixedly installed on the side of the buckle away from the bolt, a fixing frame is fixedly installed on the outer side of the connecting plate, a crossbar is fixedly installed in the middle of the inner side of the fixing frame, a clamping plate is slidably sleeved in the middle of the crossbar, an anti-slip groove is provided on the inner side of the clamping plate, and springs are sleeved on the outer sides of both ends of the crossbar, with the springs located between the clamping plate and the inner walls of both ends of the fixing frame.

[0013] Optionally, the right end of the movable shaft extends to the outside of the right end of the connecting pipe, and a semi-circular plate is fixedly installed at the right end of the movable shaft. The diameter of the semi-circular plate is smaller than the inner wall diameter of the connecting pipe.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This utility model provides an air inlet and outlet pipe on both sides of the sampling pump, with a check valve and other components at the bottom of the outlet pipe. Ambient air is introduced into the sampling pipeline through the sampling head, and then the sampling pump draws the air into the device. After the sampled gas enters the pipeline, the check valve prevents backflow and prevents external gas from mixing, ensuring the representativeness of the air sample and reducing errors in the subsequent comprehensive air analysis.

[0016] 2. This utility model, by setting up components such as a sealing cylinder, a check ring, and a plug, uses a moving shaft to easily connect with the outside air and then push it under external force to clear the internal passage of the connecting pipe. This allows the captured sample to be collected in a sample collector for subsequent analysis and testing. When the external pipe is removed, the sealing cylinder returns to its original position under the action of a spring, thus sealing the connecting pipe and ensuring that the bottom of the sampling main pipe is always in a closed state, preventing the outside air from entering and causing mixing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the sampling main pipe in an embodiment of this application;

[0019] Figure 3 This is a three-dimensional structural diagram of the connection between the air inlet pipe and the air outlet pipe in an embodiment of this application;

[0020] Figure 4 This is an exploded three-dimensional structural view of the connecting pipe in an embodiment of this application.

[0021] Reference numerals: 1. Sampling main pipe; 2. Buckle; 3. Inlet pipe; 4. Middle fixing ring; 5. Sampling pump; 6. Outlet pipe; 7. Connecting pipe; 8. Conical cylinder; 9. Fixing cross plate; 10. Fixing frame; 11. Cross bar; 12. Clamping plate; 13. Connecting plate; 14. Top fixing plate; 15. Support plate; 16. Check plate; 17. Outlet plate; 18. Bottom fixing plate; 19. Sealing cylinder; 20. Right check ring; 21. Left check ring; 22. Block; 23. Moving shaft. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses an integrated ambient air sampler. For example... Figure 1 As shown, the system includes a sampling main pipe 1. A conical amplifying tube is fixedly installed at the top left end of the sampling main pipe 1. The conical amplifying tube makes it easier to collect air into the sampling pipe. The sampling main pipe 1 is set in a "Z" shape. An air outlet plate 17 is fixedly installed at the bottom of the vertical inner wall of the sampling main pipe 1. An air outlet hole is provided in the middle of the air outlet plate 17. A support plate 15 is fixedly installed at one end of the bottom of the air outlet plate 17. A check plate 16 is rotatably installed in the middle of the support plate 15 via a horizontal axis. A torsion spring is provided between the check plate 16 and the support plate 15. Under the action of the torsion spring, the check plate 16 is always in close contact with the bottom of the air outlet plate 17. When encountering the blowing force of air, the check plate 16 rotates away from the air outlet plate 17, thereby opening the air outlet plate 17. Under the action of the check plate 16, the backflow of gas is prevented.

[0024] Please see Figure 2 A central fixing ring 4 is fixedly sleeved in the middle of the sampling main pipe 1. A fixing horizontal plate 9 is fixedly installed on the outer side of the central fixing ring 4 by bolts. A sampling pump 5 is fixedly installed on the inner side of the fixed horizontal plate 9 away from the central fixing ring 4. Connecting pipes are provided on both sides of the sampling pump 5. An air inlet pipe 3 is connected to the connecting pipe above the sampling pump 5 at the end away from the sampling pump 5. A top fixing plate 14 is fixedly installed on the outer side of the air inlet pipe 3 near the top position. The top fixing plate 14 fixes the top of the air inlet pipe 3. The outer side of the top fixing plate 14 is fixedly installed on the inner wall of the sampling main pipe 1 near the top position. A bottom fixing plate 18 is fixedly installed on the outer side of the air outlet pipe 6 near the bottom position. The outer side of the bottom fixing plate 18 is fixedly installed on the inner wall of the sampling main pipe 1 near the bottom position in the vertical direction. The bottom fixing plate 18 fixes the bottom of the air outlet pipe 6, ensuring that the air inlet pipe 3 and the air outlet pipe 6 still have a certain stability even if vibration occurs during operation.

[0025] Please refer to it again. Figure 2The other end of the air inlet pipe 3 extends to the inside of the sampling main pipe 1 and is fitted with a circular plate. The outer side of the circular plate is fixedly set at the top position of the inner wall of the sampling main pipe 1. The connecting pipe at the bottom of the sampling pump 5 is connected to the air outlet pipe 6. The other end of the air outlet pipe 6 extends to the inside of the sampling main pipe 1 and is fitted with a circular ring. The outer side of the circular ring is fixedly set at the bottom position of the inner wall of the sampling main pipe 1.

[0026] Please see Figure 1 and Figure 2 A conical cylinder 8 is fixedly installed at the right end of the bottom of the sampling main pipe 1. The end of the conical cylinder 8 away from the sampling main pipe 1 is connected to a connecting pipe 7. A left check ring 21 is fixedly installed on the inner wall of the connecting pipe 7 near the left end. A round hole is provided in the middle of the left check ring 21. The diameter of the round hole in the middle of the left check ring 21 is larger than the diameter of the moving shaft 23 and smaller than the diameter of the block 22. A spring is fixedly installed on the right side of the left check ring 21. The end of the spring away from the left check ring 21 is fixedly installed on the left side of the sealing cylinder 19. The spring supports one side of the sealing cylinder 19. The block 22 seals the round hole in the middle of the left check ring 21. When the moving shaft 23 moves, it drives the block 22 to move.

[0027] Please see Figure 2 A right-side check ring 20 is fixedly installed on the right end of the inner wall of the connecting pipe 7. A sealing cylinder 19 is slidably installed on the inner wall of the circular hole in the middle of the right-side check ring 20. The outer side of the sealing cylinder 19 is slidably connected to the inner wall of the circular hole in the middle of the right-side check ring 20. The outer diameter of the sealing cylinder 19 is the same as the diameter of the inner wall of the circular hole in the middle of the right-side check ring 20. The thickness of the sealing cylinder 19 is greater than the thickness of the right-side check ring 20. Under the action of the spring, the sealing cylinder 19 closes the right-side check ring 20 when it is stationary. After the thicker sealing cylinder 19 moves a certain distance, it opens the circular hole in the middle of the right-side check ring 20. A moving shaft 23 is fixedly inserted into the middle of the sealing cylinder 19. The right end of the moving shaft 23 extends to the outer side of the right end of the connecting pipe 7. A semi-circular plate is fixedly installed on the right end of the moving shaft 23. The diameter of the semi-circular plate is smaller than the inner wall diameter of the connecting pipe 7. When the semi-circular plate is pushed by an external force, the moving shaft 23 is pushed. Under the action of the moving shaft 23, the interior of the connecting pipe 7 is opened.

[0028] Please see Figure 2 and Figure 4A block 22 is fixedly sleeved on the outer side of the left end of the moving shaft 23. The block 22 is located inside the left end of the connecting pipe 7. A buckle 2 is symmetrically arranged on the outer side of the vertical position in the middle of the sampling main pipe 1. A connecting plate 13 is fixedly arranged on the side of the buckle 2 away from the bolt. A fixing frame 10 is fixedly arranged on the outer side of the connecting plate 13. A crossbar 11 is fixedly arranged in the middle of the inner side of the fixing frame 10. A clamping plate 12 is slidably sleeved on the middle of the crossbar 11. An anti-slip groove is provided on the inner side of the clamping plate 12. Springs are sleeved on the outer sides of both ends of the crossbar 11. The springs are located between the clamping plate 12 and the inner walls of both ends of the fixing frame 10. The clamping plate 12 slides on the surface of the crossbar 11. Under the action of the spring, the clamping plate 12 is always pressed towards the middle, which makes it convenient to install the sampler on the outside under the action of the clamping plate 12, and facilitates the installation and removal of the sampler. The outer side of the buckle 2 is clamped by bolt threads.

[0029] The implementation principle of an ambient air integrated sampler according to an embodiment of this application is as follows: During use, the sampler is fixed in a suitable position by a clamping plate 12. The clamping plate 12 slides on the surface of the crossbar 11, accommodating a wider range of installation thicknesses. Ambient air is introduced into the sampling pipeline through the sampling head. The sampling pump 5 is started, drawing air from above the sampling main pipe 1 into the device through the upper air inlet pipe 3. When the air enters the bottom position of the sampling main pipe 1, the air thrust pushes the check plate 16 downwards to open, allowing air to enter the interior of the sampling main pipe 1. When the external air sample container and the connecting pipe... When the connection is established, the moving shaft 23 is pushed to move into the interior of the connecting pipe 7. The moving shaft 23 drives the sealing cylinder 19 at the right end to move away from the right check ring 20. At the same time, the plug 22 moves away from the left check ring 21 to the left, so that the round holes in the middle of the left check ring 21 and the right check ring 20 are opened, allowing air to enter the sample container through the connecting pipe 7. When the sample container is removed, the moving shaft 23 returns to its original position under the action of the spring. At the same time, the left check ring 21 and the right check ring 20 are closed to prevent gas from flowing out and increase its sealing performance.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An ambient air integrated sampler, comprising a sampling main pipe (1), characterized in that: A central fixing ring (4) is fixedly sleeved in the middle of the sampling main tube (1). A fixing horizontal plate (9) is fixedly installed on the outside of the central fixing ring (4) by bolts. A sampling pump (5) is fixedly installed on the inner side of the end of the fixing horizontal plate (9) away from the central fixing ring (4). A connecting pipe is provided on both sides of the sampling pump (5). An air inlet pipe (3) is connected to the end of the connecting pipe above the sampling pump (5) away from the sampling pump (5). The other end of the air inlet pipe (3) extends to the inside of the sampling main tube (1) and is sleeved with a circular plate. The outer side of the circular plate is fixedly installed at the top position of the inner wall of the sampling main tube (1). An air outlet pipe (6) is connected to the connecting pipe at the bottom of the sampling pump (5). The other end of the air outlet pipe (6) extends to the inside of the sampling main tube (1) and is sleeved with a circular ring. The outer side of the circular ring is fixedly installed at the bottom position of the inner wall of the sampling main tube (1). A conical cylinder (8) is fixedly installed at the right end of the bottom of the sampling main pipe (1). The end of the conical cylinder (8) away from the sampling main pipe (1) is connected to a connecting pipe (7). A right check ring (20) is fixedly installed at the right end of the inner wall of the connecting pipe (7). A sealing cylinder (19) is slidably installed on the inner wall of the round hole in the middle of the right check ring (20). A moving shaft (23) is fixedly inserted in the middle of the sealing cylinder (19). A plug (22) is fixedly sleeved on the outer side of the left end of the moving shaft (23). The plug (22) is located at the left end inside the connecting pipe (7). A buckle (2) is symmetrically installed on the outer side of the vertical position in the middle of the sampling main pipe (1). The outer side of the buckle (2) is secured by a bolt thread.

2. The ambient air comprehensive sampler according to claim 1, characterized in that: The outer side of the air inlet pipe (3) near the top is fixedly provided with a top fixing plate (14), and the outer side of the top fixing plate (14) is fixedly provided on the inner wall of the sampling main pipe (1) near the top. The outer side of the air outlet pipe (6) near the bottom is fixedly provided with a bottom fixing plate (18), and the outer side of the bottom fixing plate (18) is fixedly provided on the inner wall of the sampling main pipe (1) near the bottom in the vertical position.

3. The ambient air comprehensive sampler according to claim 1, characterized in that: A tapered amplification tube is fixedly installed at the top left end of the sampling main tube (1). The sampling main tube (1) is set in a "Z" shape. An air outlet plate (17) is fixedly installed at the bottom of the inner wall of the vertical position of the sampling main tube (1). An air outlet hole is provided in the middle of the air outlet plate (17). A support plate (15) is fixedly installed at one end of the bottom of the air outlet plate (17). A check plate (16) is rotatably installed in the middle of the support plate (15) through a horizontal axis. A torsion spring is provided between the check plate (16) and the support plate (15).

4. An ambient air comprehensive sampler according to claim 1, characterized in that: A left check ring (21) is fixedly installed on the inner wall of the connecting pipe (7) near the left end. A round hole is provided in the middle of the left check ring (21). The diameter of the round hole in the middle of the left check ring (21) is larger than the diameter of the moving shaft (23) and smaller than the diameter of the block (22). A spring is fixedly installed on the right side of the left check ring (21). The end of the spring away from the left check ring (21) is fixedly installed on the left side of the sealing cylinder (19).

5. An ambient air comprehensive sampler according to claim 1, characterized in that: The outer side of the sealing cylinder (19) is slidably connected to the inner wall of the circular hole in the middle of the right check ring (20). The outer diameter of the sealing cylinder (19) is the same as the inner diameter of the circular hole in the middle of the right check ring (20). The thickness of the sealing cylinder (19) is greater than the thickness of the right check ring (20).

6. An ambient air comprehensive sampler according to claim 1, characterized in that: A connecting plate (13) is fixedly installed on the side of the buckle (2) away from the bolt. A fixing frame (10) is fixedly installed on the outer side of the connecting plate (13). A crossbar (11) is fixedly installed in the middle of the inner side of the fixing frame (10). A locking plate (12) is slidably sleeved in the middle of the crossbar (11). An anti-slip groove is provided on the inner side of the locking plate (12). Springs are sleeved on the outer sides of both ends of the crossbar (11). The springs are located between the inner walls of the locking plate (12) and the two ends of the fixing frame (10).

7. An ambient air comprehensive sampler according to claim 1, characterized in that: The right end of the movable shaft (23) extends to the outside of the right end of the connecting pipe (7). A semi-circular plate is fixedly installed at the right end of the movable shaft (23), and the diameter of the semi-circular plate is smaller than the inner wall diameter of the connecting pipe (7).

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