Sample extraction device for atmospheric pollution detection based on environmental science
By designing a sample extraction device driven by a worm gear and rack mechanism, the problems of large sampling errors and leakage pollution at the same height were solved, thus achieving comprehensiveness and accuracy in air pollution detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI BAINENG IND TECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-05-29
AI Technical Summary
Existing air pollution detection devices have large errors when sampling at the same altitude, and the sampling tubes are prone to leakage or contamination, affecting the accuracy of the detection results.
A sample extraction device including a first drive component and a second drive component was designed. The rotation and lifting of the main shaft and the lifting plate are realized through a worm gear and rack mechanism. Combined with an anti-leakage component, sample collection at different heights and sample leakage prevention are achieved.
It enables comprehensive collection of atmospheric data at different altitudes, reduces errors, prevents sample leakage and contamination, and improves the accuracy of test results.
Smart Images
Figure CN224303389U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of atmospheric environment detection technology, specifically a sample extraction device for atmospheric pollution detection based on environmental science. Background Technology
[0002] Over the past few years, my country's economy has achieved rapid growth, accompanied by the continuous expansion of urban areas. During this process, many cities have experienced significant changes in their urban environment and population distribution. Human activities, including daily life and industrial and agricultural production, have generated large amounts of harmful gases, which have altered the original composition of the air, leading to air pollution. This pollution not only affects air quality but also disrupts the ecological balance. Therefore, air pollution detection and sampling are particularly important. Air pollution detection mainly involves analyzing and observing the concentrations of various pollutants in the atmospheric environment to monitor their changing trends and assess their potential impact on the environment and human health.
[0003] Current air pollution detection sample extraction devices collect samples at the same altitude each time. As is well known, the atmosphere is diffusive; the content and concentration of pollutants in the gas phase vary at different altitudes. Sampling only at the same altitude introduces significant errors and makes it difficult to comprehensively assess air quality. Furthermore, during air sampling, leaks or contamination are possible, negatively impacting the accuracy of the test results. Therefore, this invention provides an air pollution detection sample extraction device based on environmental science to address the aforementioned problems. Utility Model Content
[0004] The purpose of this invention is to provide a sample extraction device for atmospheric pollution detection based on environmental science, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An atmospheric pollution detection sample extraction device based on environmental science includes a base, a fixed column fixedly mounted on the top surface of the base, a main shaft rotatably mounted inside the fixed column, a first drive assembly for providing power for the rotation of the main shaft on the top surface of the base, a movable column movably mounted inside the fixed column, a rotating platform for driving a first piston to move fixedly mounted on the top surface of the movable column, a lifting plate rotatably mounted on the surface of the movable column, a second drive assembly for providing power for the lifting plate to move up and down on the surface of the fixed column, a sampling tube for extracting air fixedly mounted on the surface of the lifting plate, the first piston slidably mounted inside the sampling tube, an anti-leakage assembly on the surface of the sampling tube, and an exhaust pipe fixedly mounted on the surface of the sampling tube.
[0007] As a further embodiment of this utility model, the first drive assembly includes a first motor fixedly installed on the top surface of the base, a first rotating shaft fixedly installed at the output end of the first motor, a worm gear fixedly installed on the surface of the first rotating shaft, a gear cavity opened inside the fixed column, a worm wheel fixedly installed on the surface of the main shaft, and the worm wheel meshing with the worm gear in the gear cavity.
[0008] As a further embodiment of this utility model, a rectangular block is fixedly installed at the top of the main shaft, and a rectangular groove is opened inside the movable column, with the rectangular block slidably installed inside the rectangular groove.
[0009] As a further embodiment of this utility model, a movable frame is fixedly installed on the surface of the lifting plate, and a rack is fixedly installed on the surface of the movable frame.
[0010] As a further embodiment of this utility model, the second drive assembly includes a second motor fixedly mounted on the surface of a fixed column, a second rotating shaft fixedly mounted on the output end of the second motor, and a gear fixedly mounted on the surface of the second rotating shaft, the gear meshing with a rack.
[0011] As a further embodiment of this utility model, a first connecting rod is rotatably mounted on the top surface of the rotating platform, a second connecting rod is rotatably mounted on the surface of the first connecting rod, and the first piston is fixedly connected to the second connecting rod.
[0012] As a further embodiment of this utility model, the anti-leakage component includes an air inlet formed on the surface of the sampling tube, a fixed cylinder fixedly installed on the surface of the air inlet, a telescopic rod and a spring fixedly installed inside the fixed cylinder, the spring being sleeved on the surface of the telescopic rod, a sealing groove being formed inside the air inlet, a second piston being slidably installed inside the sealing groove, and the ends of the telescopic rod and the spring away from the fixed cylinder being fixedly connected to the second piston, and a through hole being formed on the surface of the fixed cylinder.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. When this utility model is used, the output end of the first motor rotates through the setting of the first drive component. Under the action of the worm gear and worm, the main shaft rotates, causing the movable column to rotate, which in turn drives the rotating table to rotate. Under the action of the first connecting rod and the second connecting rod, the first piston moves, thereby drawing the outside gas into the sampling tube and completing the extraction of air pollution detection samples.
[0015] 2. When this utility model is used, the output end of the second motor rotates through the setting of the second drive component. Under the action of gears and racks, the movable frame moves, so that the lifting plate rises and falls, thereby adjusting the height of the sampling tube. This makes it easier to collect air samples at different heights, making the judgment of air quality more comprehensive.
[0016] 3. When this utility model is used, by setting the anti-leakage component, when the sample in the sampling tube is discharged through the vent pipe, the second piston enters the sealing groove under the action of the spring's restoring force, which can block the air inlet, prevent the sample in the sampling tube from leaking out, and avoid contamination of the sample in the sampling tube. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a sample extraction device for atmospheric pollution detection based on environmental science.
[0018] Figure 2 This is a cross-sectional view of a fixed column in a sample extraction device for atmospheric pollution detection based on environmental science.
[0019] Figure 3 This is a cross-sectional view of the first drive component in a sample extraction device for atmospheric pollution detection based on environmental science.
[0020] Figure 4 This is a cross-sectional view of a movable column in a sample extraction device for atmospheric pollution detection based on environmental science.
[0021] Figure 5 This is a schematic diagram of the movable frame in a sample extraction device for atmospheric pollution detection based on environmental science.
[0022] Figure 6 This is a cross-sectional view of a sampling tube in an air pollution detection sample extraction device based on environmental science.
[0023] In the diagram: 1. Base; 2. Fixed column; 3. Main shaft; 4. Worm gear; 5. Rectangular block; 6. First motor; 7. First rotating shaft; 8. Worm; 9. Gear cavity; 10. Movable cavity; 11. Movable column; 12. Rectangular groove; 13. Rotating table; 14. Lifting plate; 15. Movable frame; 16. Rack; 17. Slider; 18. Slide groove; 19. Second motor; 20. Second rotating shaft; 21. Gear; 22. Vertical plate; 23. Sampling tube; 24. First connecting rod; 25. Second connecting rod; 26. Limiting block; 27. Limiting groove; 28. First piston; 29. Air inlet; 30. Fixed cylinder; 31. Telescopic rod; 32. Spring; 33. Second piston; 34. Sealing groove; 35. Through hole; 36. Air outlet pipe; 37. Solenoid valve. Detailed Implementation
[0024] 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.
[0025] Please see Figures 1-6 In this embodiment of the present invention, a sample extraction device for atmospheric pollution detection based on environmental science includes a base 1. A fixed column 2 is fixedly installed on the top surface of the base 1. A main shaft 3 is rotatably installed inside the fixed column 2. A first drive assembly for providing power for the rotation of the main shaft 3 is provided on the top surface of the base 1. A movable column 11 is movably installed inside the fixed column 2. To ensure that the movable column 11 can move stably inside the fixed column 2, a movable cavity 10 is opened inside the fixed column 2, and the movable column 11 is movably installed inside the movable cavity 10. A rotating part for driving the first piston 28 to move is fixedly installed on the top surface of the movable column 11. A lifting plate 14 is rotatably mounted on the surface of the platform 13 and the movable column 11. A second drive assembly for providing power for the lifting plate 14 to rise and fall is provided on the surface of the fixed column 2. A sampling tube 23 for extracting air is fixedly mounted on the surface of the lifting plate 14. To ensure that the sampling tube 23 is stably mounted on the lifting plate 14, a vertical plate 22 is fixedly mounted on the surface of the lifting plate 14. The vertical plate 22 is fixedly connected to the sampling tube 23. A first piston 28 is slidably mounted inside the sampling tube 23. An anti-leakage assembly is provided on the surface of the sampling tube 23. An air outlet pipe 36 is fixedly mounted on the surface of the sampling tube 23. A solenoid valve 37 is provided on the surface of the air outlet pipe 36.
[0026] like Figure 3As shown, the first drive assembly includes a first motor 6 fixedly mounted on the top surface of the base 1, a first rotating shaft 7 fixedly mounted on the output end of the first motor 6, a worm gear 8 fixedly mounted on the surface of the first rotating shaft 7, a gear cavity 9 opened inside the fixed column 2, a worm wheel 4 fixedly mounted on the surface of the main shaft 3, and the worm wheel 4 meshes with the worm gear 8 inside the gear cavity 9.
[0027] To ensure that the movable column 11 can be raised and lowered while rotating, such as Figure 4 As shown, a rectangular block 5 is fixedly installed at the top of the main shaft 3, and a rectangular groove 12 is opened inside the movable column 11. The rectangular block 5 is slidably installed inside the rectangular groove 12.
[0028] like Figure 5 As shown, a movable frame 15 is fixedly installed on the surface of the lifting plate 14, and a rack 16 is fixedly installed on the surface of the movable frame 15. In order to ensure that the movable frame 15 can move up and down stably, a slider 17 is fixedly installed on the surface of the movable frame 15. A groove 18 is opened on the surface of the fixed column 2, and the slider 17 is slidably installed in the groove 18.
[0029] To facilitate atmospheric sampling at different altitudes, such as Figure 1 As shown, the second drive assembly includes a second motor 19 fixedly mounted on the surface of the fixed column 2, a second rotating shaft 20 fixedly mounted on the output end of the second motor 19, and a gear 21 fixedly mounted on the surface of the second rotating shaft 20, the gear 21 meshing with the rack 16.
[0030] A first connecting rod 24 is rotatably mounted on the top surface of the rotating platform 13, and a second connecting rod 25 is rotatably mounted on the surface of the first connecting rod 24. In order to ensure that the second connecting rod 25 is stably slidably connected to the vertical plate 22, a limiting block 26 is fixedly mounted on the bottom surface of the second connecting rod 25. A limiting groove 27 is opened inside the vertical plate 22, and the limiting block 26 is slidably connected to the limiting groove 27. The first piston 28 is fixedly connected to the second connecting rod 25.
[0031] To prevent the sample in sampling tube 23 from leaking out or becoming contaminated, such as Figure 6 As shown, the anti-leakage assembly includes an air inlet 29 on the surface of the sampling tube 23. A fixed cylinder 30 is fixedly installed on the surface of the air inlet 29. A telescopic rod 31 and a spring 32 are fixedly installed inside the fixed cylinder 30. The spring 32 is sleeved on the surface of the telescopic rod 31. A sealing groove 34 is opened inside the air inlet 29. A second piston 33 is slidably installed inside the sealing groove 34. The ends of the telescopic rod 31 and the spring 32 away from the fixed cylinder 30 are both fixedly connected to the second piston 33. A through hole 35 is opened on the surface of the fixed cylinder 30, and multiple sets of through holes 35 are provided.
[0032] The working principle of this utility model is as follows: When detecting air pollution, samples need to be drawn. The staff moves this device to the sampling area and starts the first motor 6. The output of the first motor 6 rotates, driving the first rotating shaft 7 to rotate, which in turn drives the worm gear 8. The worm gear 8 meshes with the worm wheel 4, causing the worm wheel 4 to rotate, which in turn drives the main shaft 3 to rotate, causing the rectangular block 5 to rotate. The rectangular block 5 is slidably connected to the rectangular groove 12 inside the movable column 11, thereby causing the movable column 11 to rotate within the movable cavity 10. The rotating platform 13 rotates, causing the first connecting rod 24 to rotate, which in turn moves the second connecting rod 25. This, in turn, moves the first piston 28 towards the vertical plate 22 within the sampling tube 23, reducing the air pressure between the first piston 28 and the air inlet 29. This causes the second piston 33 to move into the sampling tube 23, stretching the spring 32. When the second piston 33 moves out of the sealing groove 34 within the air inlet 29, external air can be drawn into the sampling tube 23 through the air inlet 29 and the through hole 35, thus completing the extraction of air pollution detection samples. When testing the sample in the sampling tube 23, the solenoid valve 37 on the exhaust pipe 36 is opened, and the first motor 6 is restarted, causing the output end of the first motor 6 to rotate in the reverse direction, driving the first piston 28 to move toward the exhaust pipe 36, thus expelling the gas in the sampling tube 23 for testing. As the gas in the sampling tube 23 is expelled through the exhaust pipe 36, the restoring force of the spring 32 drives the second piston 33 to move, causing the second piston 33 to enter the sealing groove 34, thus blocking the air inlet 29 and preventing the sample in the sampling tube 23 from leaking out. The second motor 19 is then started, and the output end of the second motor 19 rotates, driving the second rotating shaft 20 to rotate, causing the gear 21 to rotate. The gear 21 meshes with the rack 16, driving the rack 16 to move, which in turn moves the movable frame 15, causing the lifting plate 14 to rise and fall, thus moving the sampling tube 23. This allows for adjustment of the height of the sampling tube 23, enabling the collection of air samples at different heights, facilitating a more comprehensive assessment of atmospheric quality.
[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A sample extraction device for atmospheric pollution detection based on environmental science, comprising a base (1), characterized in that, A fixed column (2) is fixedly installed on the top surface of the base (1). A main shaft (3) is rotatably installed inside the fixed column (2). A first drive assembly for providing power for the rotation of the main shaft (3) is provided on the top surface of the base (1). A movable column (11) is movably installed inside the fixed column (2). A rotating platform (13) for driving the first piston (28) to move is fixedly installed on the top surface of the movable column (11). A lifting plate (14) is rotatably installed on the surface of the movable column (11). A second drive assembly for providing power for the lifting plate (14) to rise and fall is provided on the surface of the fixed column (2). A sampling tube (23) for extracting air is fixedly installed on the surface of the lifting plate (14). The first piston (28) is slidably installed inside the sampling tube (23). An anti-leakage assembly is provided on the surface of the sampling tube (23). An exhaust pipe (36) is fixedly installed on the surface of the sampling tube (23).
2. The sample extraction device for atmospheric pollution detection based on environmental science according to claim 1, characterized in that, The first drive assembly includes a first motor (6) fixedly mounted on the top surface of the base (1), a first rotating shaft (7) fixedly mounted on the output end of the first motor (6), a worm gear (8) fixedly mounted on the surface of the first rotating shaft (7), a gear cavity (9) is opened inside the fixed column (2), a worm wheel (4) is fixedly mounted on the surface of the main shaft (3), and the worm wheel (4) meshes with the worm gear (8) in the gear cavity (9).
3. The sample extraction device for atmospheric pollution detection based on environmental science according to claim 1, characterized in that, A rectangular block (5) is fixedly installed at the top of the main shaft (3), and a rectangular groove (12) is opened inside the movable column (11). The rectangular block (5) is slidably installed inside the rectangular groove (12).
4. The sample extraction device for atmospheric pollution detection based on environmental science according to claim 1, characterized in that, A movable frame (15) is fixedly installed on the surface of the lifting plate (14), and a rack (16) is fixedly installed on the surface of the movable frame (15).
5. The sample extraction device for atmospheric pollution detection based on environmental science according to claim 4, characterized in that, The second drive assembly includes a second motor (19) fixedly mounted on the surface of the fixed column (2), a second rotating shaft (20) fixedly mounted on the output end of the second motor (19), and a gear (21) fixedly mounted on the surface of the second rotating shaft (20), the gear (21) meshing with the rack (16).
6. The sample extraction device for atmospheric pollution detection based on environmental science according to claim 1, characterized in that, The top surface of the rotating platform (13) is rotatably mounted with a first connecting rod (24), and the surface of the first connecting rod (24) is rotatably mounted with a second connecting rod (25). The first piston (28) is fixedly connected to the second connecting rod (25).
7. The sample extraction device for atmospheric pollution detection based on environmental science according to claim 1, characterized in that, The anti-leakage assembly includes an air inlet (29) on the surface of the sampling tube (23). A fixed cylinder (30) is fixedly installed on the surface of the air inlet (29). A telescopic rod (31) and a spring (32) are fixedly installed inside the fixed cylinder (30). The spring (32) is sleeved on the surface of the telescopic rod (31). A sealing groove (34) is provided inside the air inlet (29). A second piston (33) is slidably installed inside the sealing groove (34). The ends of the telescopic rod (31) and the spring (32) away from the fixed cylinder (30) are fixedly connected to the second piston (33). A through hole (35) is provided on the surface of the fixed cylinder (30).