Ambient air particulate matter sampling device

Abstract

The utility model relates to environmental air particulate matter sampling device technical field discloses a kind of environmental air particulate matter sampling devices, including controller, the controller bottom is fixedly connected with tripod, the controller top is fixedly connected with lower cone, the lower cone inside is provided with filter membrane, the lower cone upper surface is provided with PM2.5 cutter, the PM2.5 cutter upper surface is provided with PM10 cutter, the PM10 cutter upper surface is provided with top cover, the PM10 cutter side wall is provided with dismounting assembly, the tripod side wall is provided with fixed component;The dismounting assembly includes fixed block, and the fixed block is fixedly connected in the PM2.5 cutter, PM10 cutter, top cover side wall respectively.In the utility model, by the sliding cooperation of fixed block and L-shaped sliding slot, and the engagement and separation of spring one driven clamping block, PM2.5 cutter, PM10 cutter and top cover are realized quick dismounting, and the maintenance efficiency of device is improved by the above structure.

Description

Technical Field

[0001] This utility model relates to the technical field of ambient air particulate matter sampling devices, and in particular to an ambient air particulate matter sampling device. Background Technology

[0002] In the field of environmental monitoring, the accurate collection of airborne particulate matter (such as PM2.5 and PM10) is a crucial step in analyzing air quality and assessing the degree of environmental pollution. An ambient air particulate matter sampling device is an important piece of equipment for achieving this goal, and its performance directly affects the accuracy and reliability of monitoring data. With increasing environmental awareness and increasingly stringent monitoring requirements, higher demands are being placed on the structural rationality, ease of operation, and maintenance efficiency of sampling devices to meet the long-term stable sampling needs under different environments.

[0003] In existing technologies, ambient air particulate matter sampling devices typically include core components such as cutters for classifying and screening particulate matter (e.g., PM2.5 cutters, PM10 cutters), filter membrane assemblies for collecting particulate matter, and a protective top cover. These components are mostly connected to the main body of the device using traditional threaded connections. The technical principle is that the engagement of internal and external threads achieves fixation. During installation, the component needs to be aligned with the threaded interface and rotated several times until tightened. Disassembly requires rotating the same number of times in the opposite direction to separate them. Furthermore, to ensure the sealing and stability of the connection, tools are often needed to assist in tightening to prevent air leakage or component loosening during sampling.

[0004] However, components such as the cutter and top cover, which use traditional threaded connections, require a significant amount of time for rotation during each disassembly and assembly in actual use. This is especially true when the device is used for long-term field monitoring and requires frequent replacement of the filter membrane or maintenance of the cutter. This cumbersome disassembly and assembly process significantly prolongs the operation time and reduces the maintenance efficiency of the device. Therefore, an ambient air particulate matter sampling device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an ambient air particulate matter sampling device, which aims to improve the problem of cumbersome and time-consuming disassembly and assembly of cutter components in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An ambient air particulate matter sampling device includes a controller, a tripod fixedly connected to the bottom of the controller, a lower cone fixedly connected to the top of the controller, a filter membrane disposed inside the lower cone, a PM2.5 cutter disposed on the upper surface of the lower cone, a PM10 cutter disposed on the upper surface of the PM2.5 cutter, a top cover disposed on the upper surface of the PM10 cutter, a disassembly assembly disposed on the side wall of the PM10 cutter, and a fixing assembly disposed on the side wall of the tripod.

[0008] The assembly / disassembly component includes a fixing block, which is fixedly connected to the PM2.5 cutter, PM10 cutter, and top cover sidewall respectively. The lower cone, PM2.5 cutter, and PM10 cutter are all provided with L-shaped grooves. The sidewall of the fixing block is slidably connected to the inside of the L-shaped groove. The lower cone, PM2.5 cutter, and PM10 cutter are all fixedly connected to a fixing seat. A spring is fixedly connected to the sidewall of the fixing seat, and a locking block is fixedly connected to one end of the spring.

[0009] As a further description of the above technical solution:

[0010] The fixing assembly includes a fixing shell and a ground cone. The side wall of the fixing shell is fixedly connected to the side of the tripod support, and the side wall of the ground cone is slidably connected inside the fixing shell. The side wall of the ground cone has multiple fixing holes.

[0011] As a further description of the above technical solution:

[0012] The PM2.5 cutter sidewall is slidably connected to the inside of the filter membrane, the PM10 cutter sidewall is slidably connected to the inside of the PM2.5 cutter, the top cover sidewall is slidably connected to the inside of the PM10 cutter, and the locking block sidewall is slidably connected to the inside of the fixing block.

[0013] As a further description of the above technical solution:

[0014] The sidewall of the ground cone is fixedly connected to a limiting block, and the sidewall of the limiting block is slidably connected inside the fixed shell.

[0015] As a further description of the above technical solution:

[0016] A connecting shell is fixedly connected to the side wall of the fixed shell, and a plug rod is slidably connected inside the connecting shell.

[0017] As a further description of the above technical solution:

[0018] One end of the insertion rod is fixedly connected to a pull ring, and the side wall of the insertion rod is slidably connected inside the fixing hole.

[0019] As a further description of the above technical solution:

[0020] A fixing ring is fixedly connected to the side wall of the insertion rod, and the side wall of the fixing ring is slidably connected inside the connecting shell.

[0021] As a further description of the above technical solution:

[0022] A second spring is fitted on the side wall of the insertion rod. One end of the second spring is fixedly connected to the inside of the connecting shell, and the other end of the second spring is fixedly connected to the side wall of the fixing ring.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the PM2.5 cutter, PM10 cutter and top cover can be quickly disassembled and assembled by the sliding cooperation between the fixed block and the L-shaped slide groove, and by the spring driving the locking and disassembly of the locking block, thereby achieving the effect of convenient maintenance and replacement of parts. This solves the problem of cumbersome and time-consuming disassembly and assembly of existing cutters and related parts, and improves the maintenance efficiency of the device through the above structure.

[0025] 2. In this utility model, through the sliding cooperation between the ground cone and the fixed shell, and the engagement and disengagement of the insertion rod and the fixing hole driven by the second spring, the ground cone can be flexibly extended and fixed according to the ground conditions, thereby enhancing the stability of the device on different ground surfaces and solving the problem of unstable fixing of existing tripods on uneven ground. The above structure improves the device's adaptability to complex terrain. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of an ambient air particulate matter sampling device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the cutter structure of an ambient air particulate matter sampling device proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the disassembly and assembly components of an ambient air particulate matter sampling device proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the tripod structure of an ambient air particulate matter sampling device proposed in this utility model;

[0031] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0032] Legend:

[0033] 1. Controller; 2. Tripod; 3. Lower cone; 4. Filter membrane; 5. PM2.5 cutter; 6. PM10 cutter; 7. Top cover; 8. L-shaped slide; 9. Fixing base; 10. Spring 1; 11. Locking block; 12. Fixing shell; 13. Ground cone; 14. Limiting block; 15. Fixing hole; 16. Connecting shell; 17. Insert rod; 18. Pull ring; 19. Fixing ring; 20. Spring 2; 21. Fixing block. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1-3 This utility model provides an embodiment of an ambient air particulate matter sampling device, including a controller 1. The controller 1 is used to receive and process signals, control the coordinated operation of various components, and ensure stable operation of the device. A tripod 2 is fixedly connected to the bottom of the controller 1, which supports the entire device and ensures its stability. A lower cone 3 is fixedly connected to the top of the controller 1. A filter membrane 4 is installed inside the lower cone 3. The filter membrane 4 is used to trap particulate matter in the air, thereby collecting particulate matter and achieving the sampling effect. A PM2.5 cutter 5 is installed on the upper surface of the lower cone 3. The PM2.5 cutter 5 is used to filter out particulate matter with a diameter of less than or equal to 2.5 micrometers in the air, ensuring that the particulate matter entering the filter membrane 4 conforms to PM2.5 standards. To meet the particle size requirements of PM2.5 cutter 5, a PM10 cutter 6 is installed on the upper surface of the PM2.5 cutter 5. The PM10 cutter 6 is used to screen out particulate matter with a particle size of less than or equal to 10 micrometers in the air. Together with the PM2.5 cutter 5, it can achieve graded screening of particulate matter of different sizes, so as to achieve the effect of accurate sampling. A top cover 7 is installed on the upper surface of the PM10 cutter 6. The top cover 7 is used to prevent external debris from falling into the cutter, so as to play a protective role and ensure the normal operation of the cutter. The side wall of the PM10 cutter 6 is equipped with a disassembly and assembly component, which is used to realize the quick disassembly and assembly of various components, so as to facilitate maintenance and replacement of components. The side wall of the tripod 2 is equipped with a fixing component, which is used to stably fix the device on the ground to adapt to different ground environments.

[0036] The assembly / disassembly component includes a fixing block 21, which is fixedly connected to the side walls of the PM2.5 cutter 5, PM10 cutter 6, and top cover 7. The lower cone 3, PM2.5 cutter 5, and PM10 cutter 6 each have an L-shaped groove 8 inside. The L-shaped groove 8 provides a sliding path for the fixing block 21, guiding it to slide accurately. The side wall of the fixing block 21 slides within the L-shaped groove 8, achieving initial positioning and connection of the components. A fixing seat 9 is fixedly connected inside the lower cone 3, PM2.5 cutter 5, and PM10 cutter 6. A spring 10 is fixedly connected to the side wall of the fixing seat 9. The spring 10 provides elastic force to drive the movement of the locking block 11. One end of the spring 10 is fixedly connected to the locking block 11, which engages with the fixing block 21 to secure the components. To prevent components from falling off during operation, the side wall of the PM2.5 cutter 5 is slidably connected to the inside of the filter membrane 4. The PM2.5 cutter 5 slides in conjunction with the filter membrane 4, achieving precise alignment between the PM2.5 cutter 5 and the filter membrane 4, ensuring stable airflow. The side wall of the PM10 cutter 6 is slidably connected to the inside of the PM2.5 cutter 5. The PM10 cutter 6 slides in conjunction with the PM2.5 cutter 5, achieving a tight connection between the two, preventing airflow leakage. The side wall of the top cover 7 is slidably connected to the inside of the PM10 cutter 6. The top cover 7 slides in conjunction with the PM10 cutter 6, achieving a stable connection between the top cover 7 and the PM10 cutter 6, providing effective protection. The side wall of the locking block 11 is slidably connected to the inside of the fixing block 21. The locking block 11 slides in conjunction with the fixing block 21, achieving the effect of locking the locking block 11 into the fixing block 21, firmly fixing the components.

[0037] Reference Figures 1-3The fixing assembly includes a fixing shell 12 and a ground cone 13. The fixing shell 12 serves to accommodate and guide the ground cone 13. The side wall of the fixing shell 12 is fixedly connected to the side of the tripod 2 support. The fixing shell 12 is used to connect the fixing assembly to the tripod 2, so that the fixing assembly is stably installed on the tripod 2. The ground cone 13 is inserted into the ground to enhance the stability of the device. The side wall of the ground cone 13 is slidably connected inside the fixing shell 12. The ground cone 13 moves in conjunction with the fixing shell 12 to achieve the effect of extending or retracting the ground cone 13 as needed. The side wall of the ground cone 13 has multiple fixing holes 15 for fixing the ground cone 13 to different extension lengths. The side wall of the ground cone 13 is fixedly connected to a limit block 14. The limit block 14 is used to limit the sliding range of the ground cone 13 and prevent the ground cone 13 from completely detaching from the fixing shell 12. The side wall of the limit block 14 is slidably connected inside the fixing shell 12. A connecting shell 16 is fixedly connected to the side wall of the fixing shell 12. A sliding connection is made inside the connecting shell 16. Insert rod 17 is used to insert into fixing hole 15 to fix ground cone 13 at its current extended length. One end of insert rod 17 is fixedly connected to pull ring 18, which is used to facilitate the operator to pull insert rod 17 to pull it out of fixing hole 15. The side wall of insert rod 17 is slidably connected inside fixing hole 15. Insert rod 17 cooperates with fixing hole 15 to perform insertion and extraction movement, achieving the effect of quickly fixing or releasing ground cone 13. Fixing ring 19 is fixedly connected to the side wall of insert rod 17. Fixing ring 19 is slidably connected to the side wall of connecting shell 16. Spring 20 is sleeved on the side wall of insert rod 17. Spring 20 provides elastic force to keep insert rod 17 inserted into fixing hole 15. One end of spring 20 is fixedly connected inside connecting shell 16, and the other end of spring 20 is fixedly connected to the side wall of fixing ring 19. Spring 20 cooperates with fixing ring 19 and insert rod 17 to perform extension and retraction movement, achieving the effect of automatically driving insert rod 17 to insert into fixing hole 15.

[0038] Working principle: When using this equipment, if it is necessary to fix the device to the ground, the fixing component on the side wall of the tripod 2 can be used. The side wall of the ground cone 13 in the fixing component is slidably connected to the inside of the fixing shell 12. When facing uneven ground or needing to enhance stability, pull the pull ring 18, and the insertion rod 17 slides in the connecting shell 16. The fixing ring 19 moves accordingly and compresses the second spring 20, causing the insertion rod 17 to be pulled out from the fixing hole 15 on the side wall of the ground cone 13. At this time, the ground cone 13 can be pulled out from the fixing shell 12 to a suitable length. Release the pull ring 18, and the second spring 20 returns to its original position, pushing the fixing ring 19 and driving the insertion rod 17 to move out of the ground. Rod 17 is inserted into the corresponding fixing hole 15 to fix the ground cone 13. The ground cone 13 is inserted into the ground to enhance the stability of the device. When the ground cone 13 is not in use, it is retracted into the fixing shell 12 by reversing the above operation. The limiting block 14 can prevent the ground cone 13 from completely detaching from the fixing shell 12. The lower cone 3, which is fixedly connected to the top of the controller 1, is equipped with a filter membrane 4 for collecting screened particles. The PM2.5 cutter 5 and PM10 cutter 6 on the upper surface of the lower cone 3 are used to screen the particles in the air according to their particle size. The top cover 7 on the upper surface of the PM10 cutter 6 can play a protective role.

[0039] When assembling and disassembling the PM2.5 cutter 5, PM10 cutter 6, and top cover 7, a disassembly and assembly assembly is used. The fixing blocks 21 of the assembly are fixed to the side walls of the PM2.5 cutter 5, PM10 cutter 6, and top cover 7, respectively. When the lower cone 3 is connected to the PM2.5 cutter 5, the fixing block 21 of the PM2.5 cutter 5 is aligned with the L-shaped groove 8 of the lower cone 3 and slid in. During the sliding process, the fixing block 21 presses against the locking block 11, causing the locking block 11 to compress the spring 10 and move towards the fixing seat 9. When the fixing block 21 slides to the appropriate position in the L-shaped groove 8, the spring 10 returns to its original position. The push block 11 is inserted into the fixing block 21 to complete the connection and fixation between the two. Similarly, the connection between PM10 cutter 6 and PM2.5 cutter 5, and between top cover 7 and PM10 cutter 6 is also carried out in the above manner. When disassembly is required, external force is applied to make the fixing block 21 slide in the opposite direction, and the push block 11 is squeezed again to compress the spring 10, so that the fixing block 21 can slide out from the L-shaped slide groove 8 to separate the components. With this structural design, the device can be stably placed on different ground surfaces and the components can be easily disassembled and maintained, thereby efficiently and accurately collecting particulate matter in the ambient air.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ambient air particulate matter sampling device, comprising a controller (1), characterized in that: The controller (1) is fixedly connected to a tripod (2) at the bottom, and a lower cone (3) is fixedly connected to the top of the controller (1). A filter membrane (4) is provided inside the lower cone (3). A PM2.5 cutter (5) is provided on the upper surface of the lower cone (3). A PM10 cutter (6) is provided on the upper surface of the PM2.5 cutter (5). A top cover (7) is provided on the upper surface of the PM10 cutter (6). A disassembly assembly is provided on the side wall of the PM10 cutter (6). A fixing assembly is provided on the side wall of the tripod (2). The assembly and disassembly assembly includes a fixing block (21), which is fixedly connected to the side walls of the PM2.5 cutter (5), PM10 cutter (6), and top cover (7). The lower cone (3), PM2.5 cutter (5), and PM10 cutter (6) are all provided with L-shaped grooves (8). The side wall of the fixing block (21) is slidably connected to the inside of the L-shaped grooves (8). The lower cone (3), PM2.5 cutter (5), and PM10 cutter (6) are all fixedly connected with fixing seats (9). The side wall of the fixing seat (9) is fixedly connected with a spring (10), and one end of the spring (10) is fixedly connected with a locking block (11).

2. The ambient air particulate matter sampling device according to claim 1, characterized in that: The fixing assembly includes a fixing shell (12) and a ground cone (13). The side wall of the fixing shell (12) is fixedly connected to the side of the tripod (2) support. The side wall of the ground cone (13) is slidably connected inside the fixing shell (12). The side wall of the ground cone (13) is provided with multiple fixing holes (15).

3. The ambient air particulate matter sampling device according to claim 1, characterized in that: The side wall of the PM2.5 cutter (5) is slidably connected to the inside of the filter membrane (4), the side wall of the PM10 cutter (6) is slidably connected to the inside of the PM2.5 cutter (5), the side wall of the top cover (7) is slidably connected to the inside of the PM10 cutter (6), and the side wall of the locking block (11) is slidably connected to the inside of the fixing block (21).

4. The ambient air particulate matter sampling device according to claim 2, characterized in that: The side wall of the ground cone (13) is fixedly connected to a limiting block (14), and the side wall of the limiting block (14) is slidably connected inside the fixed shell (12).

5. An ambient air particulate matter sampling device according to claim 4, characterized in that: The fixed shell (12) is fixedly connected to the side wall of the connecting shell (16), and the connecting shell (16) is slidably connected to the insert rod (17).

6. The ambient air particulate matter sampling device according to claim 5, characterized in that: One end of the insertion rod (17) is fixedly connected to a pull ring (18), and the side wall of the insertion rod (17) is slidably connected inside the fixing hole (15).

7. An ambient air particulate matter sampling device according to claim 6, characterized in that: The insertion rod (17) is fixedly connected to a fixing ring (19) on its side wall, and the side wall of the fixing ring (19) is slidably connected inside the connecting shell (16).

8. An ambient air particulate matter sampling device according to claim 7, characterized in that: The insert rod (17) is fitted with a second spring (20) on its side wall. One end of the second spring (20) is fixedly connected to the inside of the connecting shell (16), and the other end of the second spring (20) is fixedly connected to the side wall of the fixing ring (19).

Images