Atmosphere sampler

Abstract

The utility model discloses an atmosphere sampler, which relates to the technical field of environment monitoring equipment, and comprises a sampler body, a sampling bottle, an air pump and a positioning mechanism, the air pump and the positioning mechanism are fixedly arranged on one side of the sampler body, the sampling bottle is clamped in the positioning mechanism, and the atmosphere sampler also comprises a stirring mechanism arranged in the sampling bottle, an exhaust port is formed in the top of the sampling bottle, an air inlet pipe is arranged at the bottom of the sampling bottle, a one-way air inlet valve is arranged in the air inlet pipe, the output end of the air pump is communicated with the air inlet pipe, and the stirring mechanism comprises a stirring assembly and a driving motor fixedly mounted at the top of the sampling bottle; the stirring assembly comprises a driving shaft which is rotatably mounted in the sampling bottle in the vertical direction. According to the atmosphere sampler, through cooperative arrangement of the positioning mechanism and the stirring mechanism, rapid positioning and clamping of the sampling bottle are achieved, the sampling efficiency is improved, contact between absorption liquid and gas is more uniform, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring equipment, and specifically relates to an air sampler. Background Technique

[0002] Air sampling refers to the method of collecting pollutant samples or polluted air samples in the atmosphere, and the solution absorption method is a common method for collecting gaseous, vaporous and some aerosol pollutants in the atmosphere.

[0003] In the Chinese utility model patent application number: CN 202321061947.4, an air sampler is disclosed. The structure includes a sampler body. One side of the sampler body is detachably connected with a fixing plate. A positioning mechanism is arranged on one side of the fixing plate. A sampling bottle is arranged on one side of the fixing plate. The positioning mechanism includes a support rod fixedly connected to one side of the fixing plate. One end of the support rod is fixedly connected with a limiting ring, and an airbag is fixedly connected inside the limiting ring. For this air sampler, by setting the positioning mechanism, it can clamp and position sampling bottles with different diameters, expanding the applicable range of this sampling equipment; however, in the actual sampling process, due to the insufficient or uneven contact between the absorption liquid and the gas, the absorption liquid in some areas may not be able to contact the gas. This uneven phenomenon not only reduces the sampling efficiency but also increases the difficulty and error of data interpretation.

[0004] Therefore, it is very necessary to propose an air sampler to solve the above problems. Content of the Utility Model

[0005] Technical Problem to be Solved: The purpose of the utility model is to provide an air sampler to solve the problem that in the actual sampling process of the existing air sampler, due to the insufficient or uneven contact between the absorption liquid and the gas, the absorption liquid in some areas may not be able to contact the gas. This uneven phenomenon not only reduces the sampling efficiency but also increases the difficulty and error of data interpretation as mentioned in the above background technique.

[0006] Technical solution: To achieve the above object, the utility model is realized by the following technical solutions: An air sampler, comprising a sampler body, a sampling bottle, an air pump and a positioning mechanism. The air pump and the positioning mechanism are both fixedly installed on one side of the sampler body. The sampling bottle is clamped in the positioning mechanism. It further comprises a stirring mechanism arranged in the sampling bottle. An exhaust port is provided at the top of the sampling bottle, and an air inlet pipe is provided at the bottom. A one-way intake valve is arranged in the air inlet pipe. The output end of the air pump is communicated with the air inlet pipe. The stirring mechanism comprises a stirring component and a driving motor fixedly installed on the top of the sampling bottle. The stirring component comprises a driving shaft rotatably installed vertically in the sampling bottle. The driving shaft is in transmission connection with the driving motor. A first bevel gear is rotatably installed on the inner side wall of the sampling bottle. A second bevel gear and a third bevel gear are respectively arranged on the upper and lower sides of the first bevel gear. The second bevel gear and the third bevel gear are both in meshing transmission with the first bevel gear. The second bevel gear is fixedly sleeved on the driving shaft. The third bevel gear is rotatably sleeved on the driving shaft, and a first stirring blade is fixedly sleeved at the lower end of the third bevel gear. A second stirring blade is fixedly sleeved at the lower end of the driving shaft.

[0007] Preferably, the positioning mechanism comprises a driving component and a positioning component. The driving component comprises a motor and a fixed cylinder fixedly installed on the sampler body. A rotating ring is rotatably sleeved outside the fixed cylinder. A driving block is rotatably installed at the top of the rotating ring. A lead screw is threadedly sleeved in the driving block. The motor is rotatably installed at the upper part of the fixed cylinder, and the output shaft of the motor is fixedly connected with the lead screw.

[0008] Preferably, a plurality of notches are evenly formed in the circumferential direction on the fixed cylinder above the rotating ring. The positioning component comprises a sleeve rotatably installed in the notch. A clamping rod is slidably installed in the sleeve. One end of the clamping rod extends into the fixed cylinder and is rotatably installed with a clamping wheel, and the other end extends out of the sleeve and is rotatably connected with the rotating ring.

[0009] Preferably, a support rod is rotatably installed at the bottom of the clamping rod near one end of the rotating ring. The support rod is fixedly connected with the rotating ring. The output end of the air pump is fixedly installed with a connecting pipe. The other end of the connecting pipe is threadedly connected with the air inlet pipe.

[0010] Preferably, a fixed ring is fixedly installed on the inner side wall of the sampling bottle. The first bevel gear is rotatably installed in the fixed ring. Connecting rings are arranged on both the upper and lower sides of the fixed ring. L-shaped rods are fixedly installed on one side of the two connecting rings close to the fixed ring. The other ends of the two L-shaped rods are both fixedly connected with the fixed ring. The upper connecting ring is rotatably sleeved on the driving shaft. A sleeve is rotatably sleeved on the driving shaft. The third bevel gear is fixedly sleeved on the top of the sleeve. The first stirring blade is fixedly sleeved at the bottom of the sleeve. The lower connecting ring is rotatably sleeved in the middle of the sleeve.

[0011] Preferably, an installation box is provided inside the sampling bottle. A plurality of connecting rods are fixedly installed along the circumference of the outside of the installation box. The other ends of the connecting rods are fixedly connected to the sampling bottle. The connecting rods, L-shaped rods, connecting rings, first bevel gears, second bevel gears, and third bevel gears are all located inside the installation box. The first stirring blade and the second stirring blade are located below the installation box, and sealing sleeves are provided at the connections between the drive shaft and the sleeve and the installation box.

[0012] Beneficial effects: Compared with the prior art, the present utility model provides an air sampler. The structure of this air sampler is unique and easy to use. The motor drives the drive block to move axially along the lead screw. Since the drive block is rotatably connected to the rotating ring, this movement will be converted into the relative rotation between the fixed cylinder and the rotating ring. When the fixed cylinder and the rotating ring rotate relative to each other, the clamping rod slides in the sleeve and rotates along the support rod, so as to clamp the sampling bottle through the clamping wheel. Then, start the air pump and the drive motor. The air pump inputs the outside air into the sampling bottle, and the drive motor drives the stirring mechanism to work, so that the air is fully mixed with the liquid absorbent, and the pollutants in the air are absorbed. After the sampling is completed, pour out the absorbent, and calculate the concentration of pollutants in the air according to the measured results and the sampling volume; through the combined setting of the positioning mechanism and the stirring mechanism, not only the rapid positioning and clamping of the sampling bottle are realized, the sampling efficiency is improved, but also the stirring effect is improved by using the first stirring blade and the second stirring blade that rotate in the opposite direction, so that the contact between the absorbent liquid and the gas is more uniform, and the accuracy of the detection result is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional side view schematic diagram of the structure of the present utility model;

[0014] Figure 2 is a cross-sectional schematic diagram of the structure of the sampling bottle of the present utility model;

[0015] Figure 3 is a three-dimensional side view schematic diagram of the stirring mechanism of the present utility model;

[0016] Figure 4 is the present utility model Figure 1 an enlarged schematic diagram of the structure of area A in;

[0017] Figure 5 is the present utility model Figure 2 an enlarged schematic diagram of the structure of area B in.

[0018] In the figure: 1. Sampler body; 2. Sampling bottle; 3. Air pump; 4. Electric motor; 5. Drive shaft; 6. Installation box; 7. Connecting rod; 8. L-shaped rod; 9. Connecting ring; 10. First bevel gear; 11. Second bevel gear; 12. Sleeve; 13. Third bevel gear; 14. First stirring blade; 15. Second stirring blade; 16. Fixed cylinder; 17. Rotating ring; 18. Support rod; 19. Clamping rod; 20. Sleeve; 21. Clamping wheel; 22. Electric motor; 23. Driving block; 24. Lead screw; 25. Connecting pipe; 26. Fixed ring. Specific embodiments

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Embodiment 1: Embodiment 1 of the present invention provides an air sampler, which is directly improved on the existing air sampler and has a unique structure. Please refer to Figures 1-5 As shown in the figure, it includes a sampler body 1, a sampling bottle 2, an air pump 3 and a positioning mechanism. The air pump 3 and the positioning mechanism are both fixedly installed on one side of the sampler body 1, and the sampling bottle 2 is clamped in the positioning mechanism; the positioning mechanism includes a driving component and a positioning component. The driving component includes an electric motor 22 and a fixed cylinder 16 fixedly installed on the sampler body 1. A rotating ring 17 is rotatably sleeved outside the fixed cylinder 16. A driving block 23 is rotatably installed at the top of the rotating ring 17. A lead screw 24 is threadedly sleeved in the driving block 23. The electric motor 22 is rotatably installed on the upper part of the fixed cylinder 16, and the output shaft of the electric motor 22 is fixedly connected to the lead screw 24.

[0021] There are various installation methods for the fixed cylinder 16. For example: the bottom end of the fixed cylinder 16 is sealed, and a fixing plate is fixedly installed on one side of the bottom of the fixed cylinder 16 close to the sampler body 1, and the other end of the fixing plate is fixedly connected to the sampler body 1. There are various installation methods for the electric motor 22. For example: a connecting plate is rotatably installed at the bottom of the electric motor 22, and the other end of the connecting plate is fixedly connected to the fixed cylinder 16 above the rotating ring 17. The electric motor 22 drives the lead screw 24 to rotate, so that the distance between the electric motor 22 and the driving block 23 changes, thereby driving the relative rotation between the fixed cylinder 16 and the rotating ring 17.

[0022] A plurality of notches are evenly formed in the circumferential direction on the upper edge of the fixed cylinder 16 above the rotating ring 17. The positioning assembly includes a sleeve 20 rotatably installed in the notch. A clamping rod 19 is slidably installed in the sleeve 20. One end of the clamping rod 19 extends into the fixed cylinder 16 and is rotatably installed with a clamping wheel 21, and the other end extends out of the sleeve 20 and is rotatably connected to the rotating ring 17. There are various connection methods between the clamping rod 19 and the rotating ring 17. For example, a support rod 18 is rotatably installed at the bottom of the end of the clamping rod 19 close to the rotating ring 17, and the support rod 18 is fixedly connected to the rotating ring 17. When the fixed cylinder 16 and the rotating ring 17 rotate relative to each other, the clamping rod 19 will slide in the sleeve 20 and rotate along the corresponding support rod 18, so as to clamp and position the sampling bottle 2 through the clamping wheel 21.

[0023] It further includes a stirring mechanism arranged in the sampling bottle 2. An exhaust port is formed at the top of the sampling bottle 2, and an air inlet pipe is arranged at the bottom. A one-way air inlet valve is arranged in the air inlet pipe. The output end of the air pump 3 is communicated with the air inlet pipe. There are various connection methods between the air pump 3 and the air inlet pipe. For example, a connecting pipe 25 is fixedly installed at the output end of the air pump 3, and the other end of the connecting pipe 25 is threadedly connected to the air inlet pipe. Through the threaded connection, it is convenient for the connecting pipe 25 to be separated from the air inlet pipe, so as to facilitate the replacement of sampling bottles 2 of different sizes. The stirring mechanism includes a driving shaft 5 rotatably installed vertically in the sampling bottle 2. The driving shaft 5 is in transmission connection with the driving motor 4. There are various connection methods between the driving shaft 5 and the driving motor 4. For example, the top end of the driving shaft 5 extends out of the sampling bottle 2 and is fixedly connected to the output shaft of the driving motor 4 through a coupling.

[0024] A first bevel gear 10 is rotatably installed on the inner side wall of the sampling bottle 2. A second bevel gear 11 and a third bevel gear 13 are respectively arranged on the upper and lower sides of the first bevel gear 10. The second bevel gear 11 and the third bevel gear 13 are both in meshing transmission with the first bevel gear 10. The second bevel gear 11 is fixedly sleeved on the driving shaft 5, the third bevel gear 13 is rotatably sleeved on the driving shaft 5, and a first stirring blade 14 is fixedly sleeved at the lower end of the third bevel gear 13. A second stirring blade 15 is fixedly sleeved at the lower end of the driving shaft 5.

[0025] There are various installation methods for the first bevel gear 10, the second bevel gear 11 and the third bevel gear 13. For example, a fixing ring 26 is fixedly installed on the inner side wall of the sampling bottle 2. The first bevel gear 10 is rotatably installed in the fixing ring 26. Connecting rings 9 are provided on both the upper and lower sides of the fixing ring 26. L-shaped rods 8 are fixedly installed on one side of the two connecting rings 9 close to the fixing ring 26. The other ends of the two L-shaped rods 8 are fixedly connected to the fixing ring 26. The upper connecting ring is rotatably sleeved on the driving shaft 5. A sleeve 12 is rotatably sleeved on the driving shaft 5. The third bevel gear 13 is fixedly sleeved on the top of the sleeve 12. The first stirring blade 14 is fixedly sleeved on the bottom of the sleeve 12. The lower connecting ring is rotatably sleeved in the middle of the sleeve 12. The two connecting rings 9 can support the driving shaft 5 to prevent the driving shaft 5 from bending during rotation. In addition, by driving the first stirring blade 14 and the second stirring blade 15 to rotate in opposite directions, the stirring effect is improved, the contact between the absorption liquid and the gas is made more uniform, and the accuracy of the detection result is improved.

[0026] When the staff uses this sampler to sample the atmosphere, first place the sampling bottle 2 into the fixing cylinder 16, and then start the motor 22. The motor 22 drives the lead screw 24 to rotate, so that the distance between the motor 22 and the driving block 23 changes, thereby driving the fixing cylinder 16 and the rotating ring 17 to rotate relative to each other. When the fixing cylinder 16 and the rotating ring 17 rotate relative to each other, the clamping rod 19 will slide in the sleeve 20 and rotate along the corresponding support rod 18, so as to clamp and position the sampling bottle 2 through the clamping wheel 21. After the positioning is completed, inject the liquid absorbent into the sampling bottle 2. Then, thread one end of the connecting pipe 25 to the air inlet pipe. At the same time, start the air pump 3 and the driving motor 4. The air pump 3 inputs the external gas into the sampling bottle 2. The driving motor 4 drives the first stirring blade 14 and the second stirring blade 15 to rotate in opposite directions, so as to improve the stirring effect, make the contact between the absorption liquid and the gas more uniform, and improve the accuracy of the detection result. After the sampling is completed, pour the absorbent that has contacted the atmosphere into the sampler body 1 for detection, and calculate the concentration of pollutants in the atmosphere according to the measured result and the sampling volume.

[0027] Example 2: The difference between Example 2 and Example 1 is as Figure 5 shown. An installation box 6 is provided inside the sampling bottle 2. A plurality of connecting rods 7 are fixedly installed on the outside of the installation box 6 along the circumference. The other ends of the connecting rods 7 are fixedly connected to the sampling bottle 2. The fixing ring 26, the L-shaped rod 8, the connecting ring 9, the first bevel gear 10, the second bevel gear 11 and the third bevel gear 13 are all located inside the installation box 6. The first stirring blade 14 and the second stirring blade 15 are located below the installation box 6. Sealing sleeves are provided at the connection points of the driving shaft 5 and the sleeve 12 with the installation box 6 to prevent liquid from entering the installation box 6 and protecting the first bevel gear 10, the second bevel gear 11 and the third bevel gear 13.

[0028] The electrical devices described in the text are all electrically connected to an external power source and are all existing devices. Additionally, although embodiments of the present utility model have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An atmospheric sampler, comprising a sampler body (1), a sampling bottle (2), an air pump (3) and a positioning mechanism, wherein the air pump (3) and the positioning mechanism are both fixedly mounted on one side of the sampler body (1), and the sampling bottle (2) is clamped in the positioning mechanism, characterized in that: The invention also comprises a stirring mechanism arranged in the sampling bottle (2); the top of the sampling bottle (2) is provided with an exhaust port, the bottom is provided with an air inlet pipe, a one-way air inlet valve is provided in the air inlet pipe, the output end of the air pump (3) is connected with the air inlet pipe, and the stirring mechanism comprises a stirring assembly and a driving motor (4) fixedly mounted on the top of the sampling bottle (2); the stirring assembly comprises a driving shaft (5) mounted vertically and rotatably in the sampling bottle (2), the driving shaft (5) is drivingly connected to the driving motor (4), and a first conical gear is rotatably mounted on the inner wall of the sampling bottle (2). The first bevel gear (10) is provided with a second bevel gear (11) and a third bevel gear (13) on the upper and lower sides respectively, and the second bevel gear (11) and the third bevel gear (13) are both meshed with the first bevel gear (10) for transmission; the second bevel gear (11) is fixedly sleeved on the driving shaft (5), the third bevel gear (13) is rotatably sleeved on the driving shaft (5), and the lower end of the third bevel gear (13) is fixedly sleeved with a first stirring blade (14), and the lower end of the driving shaft (5) is fixedly sleeved with a second stirring blade (15).

2. An atmospheric sampler according to claim 1, characterized in that: The positioning mechanism comprises a driving component and a positioning component, wherein the driving component comprises a motor (22) and a fixed cylinder (16) fixedly mounted on the sampler body (1), the fixed cylinder (16) is rotatably sleeved with a rotating ring (17) on the outside, a driving block (23) is rotatably mounted on the top of the rotating ring (17), a screw rod (24) is internally threadedly sleeved on the driving block (23), the motor (22) is rotatably mounted on the upper part of the fixed cylinder (16), and the output shaft of the motor (22) is fixedly connected to the screw rod (24).

3. An atmospheric sampler according to claim 2, characterized in that: A plurality of notches are evenly arranged along the circumference of the fixed cylinder (16) above the rotating ring (17), and the positioning assembly comprises a sleeve (20) rotatably mounted in the notches, a clamping rod (19) being slidably mounted in the sleeve (20), one end of the clamping rod (19) extending into the fixed cylinder (16) and rotatably mounted with a clamping wheel (21), and the other end extending out of the sleeve (20) and rotatably connected to the rotating ring (17).

4. An atmospheric sampler according to claim 3, characterized in that: A support rod (18) is rotatably mounted at the bottom of the clamping rod (19) near one end of the rotating ring (17), and the support rod (18) is fixedly connected to the rotating ring (17). A connecting pipe (25) is fixedly mounted at the output end of the air pump (3), and the other end of the connecting pipe (25) is threadedly connected to the air inlet pipe.

5. An atmospheric sampler according to claim 1, characterized in that: A fixing ring (26) is fixedly mounted on the inner wall of the sampling bottle (2), the first bevel gear (10) is rotatably mounted in the fixing ring (26), connecting rings (9) are provided on the upper and lower sides of the fixing ring (26), L-shaped rods (8) are fixedly mounted on one side of the two connecting rings (9) close to the fixing ring (26), the other ends of the two L-shaped rods (8) are fixedly connected to the fixing ring (26), the upper connecting ring is rotatably mounted on the driving shaft (5), a sleeve (12) is rotatably mounted on the driving shaft (5), the third bevel gear (13) is fixedly mounted on the top of the sleeve (12), the first stirring blade (14) is fixedly mounted on the bottom of the sleeve (12), and the lower connecting ring is rotatably mounted on the middle of the sleeve (12).

6. An atmospheric sampler according to claim 5, characterized in that: The sampling bottle (2) is provided with a mounting box (6) inside, and a plurality of connecting rods (7) are evenly and fixedly installed on the outside of the mounting box (6) along the circumference, and the other end of the connecting rod (7) is fixedly connected to the sampling bottle (2), and the connecting rod (7), the L-shaped rod (8), the connecting ring (9), the first bevel gear (10), the second bevel gear (11) and the third bevel gear (13) are all located in the mounting box (6), the first stirring blade (14) and the second stirring blade (15) are located below the mounting box (6), and the connection between the drive shaft (5) and the sleeve (12) and the mounting box (6) is provided with a sealing sleeve.

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