A fractioning sampler with a multi-layer orifice plate structure

Abstract

The utility model discloses a kind of hierarchical samplers with multilayer orifice plate structure, it is related to sampling equipment technical field, including sampler body, the upper surface of sampler body is equipped with two support columns, the side of two support columns mutually close is commonly equipped with centrifugal fan.The utility model uses centrifugal fan as initiative air intake power source, can continuously output stable airflow, conical flow guide pipe can preliminarily rectify inhaled air, reduce airflow disorder, even in laboratory, workshop and other closed space, airflow thrust generated by centrifugal fan can also drive tiny particles to filter screen movement, effectively avoid the problem of insufficient sampling amount caused by particle suspension, annular heating wire on the outer surface of gas delivery pipe can heat air in pipe, heat preservation shell wrapped around gas delivery pipe can reduce heat loss, ensure the stability of heating and dehumidification effect, can avoid moisture condensation on filter screen and other components, prevent particulate matter from water film adhesion and deviate from classification trajectory.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, and in particular to a graded sampler with a multi-layer perforated plate structure. Background Technology

[0002] Accurate sampling and analysis of particulate matter of different sizes is crucial in many fields such as environmental monitoring, industrial waste gas detection, and scientific research experiments. By studying particulate matter of different sizes, we can gain a deeper understanding of the characteristics of pollution sources, assess environmental quality, and explore atmospheric physicochemical processes. Currently, there are various samplers on the market, but they still have shortcomings in terms of sampling accuracy, classification effect, and applicable scope.

[0003] Some samplers rely on natural air intake, and unstable airflow affects sampling accuracy. In enclosed spaces such as laboratories and workshops, the airflow velocity generated by natural convection is usually low, which is difficult to meet the sampling requirements of fine particulate matter. Some tiny particles may be suspended in the sampling chamber due to insufficient airflow thrust and fail to reach the target orifice plate, resulting in low sampling volume and insufficient representativeness. In high humidity environments, moisture is prone to condensation on the sampling components, causing particulate matter to stick together and interfere with grading. Therefore, this utility model provides a grading sampler with a multi-layer orifice plate structure to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a graded sampler with a multi-layer perforated plate structure. This solves the problems of insufficient airflow thrust causing fine particles to remain suspended in the sampling chamber within a closed space, resulting in low sampling volume, and the condensation of moisture on the sampling components in high humidity environments, which interferes with grading and makes it difficult to meet the sampling requirements for fine particulate matter.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a graded sampler with a multi-layer perforated plate structure, comprising a sampler body, two support columns mounted on the upper surface of the sampler body, a centrifugal fan mounted on the side of the two support columns that are close to each other, a conical guide pipe connected to the output end of the centrifugal fan, a gas delivery pipe connected to the end of the conical guide pipe away from the centrifugal fan, an annular heating wire mounted on the outer surface of the gas delivery pipe, a heat insulation shell mounted on the outer surface of the gas delivery pipe, and the end of the gas delivery pipe away from the conical guide pipe connected to the upper surface of the sampler body, and multiple sliding grooves formed on the inner wall of the sampler body, with a filter screen mounted on the inner wall of each set of sliding grooves.

[0006] As a further technical solution of this utility model, a second fixing plate is installed on the right side of the sampler body, an air storage tank is installed on the upper surface of the second fixing plate, two support plates are installed on the upper surface of the second fixing plate, and an air compressor is installed on the upper surface of the two support plates together.

[0007] As a further technical solution of this utility model, the output end of the air compressor is connected to a connecting pipe, and the end of the connecting pipe away from the air compressor is connected to the outer surface of the air storage tank.

[0008] As a further technical solution of this utility model, the output end of the gas storage tank is connected to a second delivery pipe, and the end of the second delivery pipe away from the gas storage tank passes through the sampler body and is connected to a high-pressure nozzle.

[0009] As a further technical solution of this utility model, a first fixing plate is installed on the left side of the sampler body, a vacuum cleaner is installed on the upper surface of the first fixing plate, a collection box is installed on the upper surface of the first fixing plate, and a box door is hinged to the left side of the collection box.

[0010] As a further technical solution of this utility model, the input end of the vacuum cleaner is connected to a suction pipe, the end of the suction pipe away from the vacuum cleaner is connected to a four-way pipe, the outer surface of the four-way pipe is connected to multiple suction branch pipes, the end of each suction branch pipe away from the four-way pipe passes through the sampler body and is connected to a suction frame, the output end of the vacuum cleaner is connected to a first conveying pipe, and the end of the first conveying pipe away from the vacuum cleaner is connected to the upper surface of the collection box.

[0011] As a further technical solution of this utility model, a sampling door is hinged to the front of the sampler body, a controller is installed on the outer surface of the sampler body, and multiple support legs are installed on the bottom surface of the sampler body.

[0012] This invention provides a graded sampler with a multi-layer perforated plate structure, which has the following advantages compared with the prior art:

[0013] 1. This design presents a graded sampler with a multi-layer perforated plate structure. The present invention utilizes a centrifugal fan as the active air intake power source, enabling a continuous and stable airflow. A conical guide tube provides initial rectification of the intake air, reducing airflow turbulence. The two work together to maintain a stable airflow velocity and volume entering the air delivery pipe, thus ensuring controllable movement of particulate matter within the sampler. Even in enclosed spaces such as laboratories and workshops, the airflow thrust generated by the centrifugal fan can drive tiny particles towards the filter, effectively avoiding insufficient sampling due to suspended particles. The annular heating wire on the outer surface of the air delivery pipe heats the air inside, causing moisture in the air to evaporate and detach from the airflow. The insulation shell surrounding the air delivery pipe reduces heat loss and ensures the stability of the heating and dehumidification effect. When the air processed by the air delivery pipe enters the sampler body, the humidity has been significantly reduced, preventing moisture condensation on the filter and other components, and preventing particulate matter from deviating from the grading trajectory due to water film adhesion. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a graded sampler with a multi-layer perforated plate structure;

[0015] Figure 2 Left view of a hierarchical sampler with a multi-layer perforated plate structure;

[0016] Figure 3 A top view of a graded sampler with a multi-layer perforated plate structure;

[0017] Figure 4 A cross-sectional view of a graded sampler with a multi-layer perforated plate structure;

[0018] Figure 5 This is a side view of a hierarchical sampler with a multi-hole plate structure.

[0019] In the diagram: 1. Sampler body; 2. Controller; 3. Support column; 4. Gas delivery pipe; 5. Insulation shell; 6. Conical guide pipe; 7. Sampling door; 8. Support leg; 9. Air compressor; 10. Collection box; 11. Box door; 12. First delivery pipe; 13. First fixing plate; 14. Vacuum cleaner; 15. Second delivery pipe; 16. Support plate; 17. Gas storage tank; 18. Connecting pipe; 19. Annular heating wire; 20. Dust collection frame; 21. Slide groove; 22. Filter screen; 23. Four-way pipe; 24. High-pressure nozzle; 25. Centrifugal fan; 26. Dust collection branch pipe; 27. Dust collection pipe; 28. Second fixing plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a graded sampler with a multi-layer perforated plate structure: It includes a sampler body 1, with two support columns 3 mounted on the upper surface of the sampler body 1. A centrifugal fan 25 is mounted on the side of the two support columns 3 that are close to each other. The output end of the centrifugal fan 25 is connected to a conical guide pipe 6. The end of the conical guide pipe 6 away from the centrifugal fan 25 is connected to a gas delivery pipe 4. An annular heating wire 19 is mounted on the outer surface of the gas delivery pipe 4, and a heat insulation shell 5 is mounted on the outer surface of the gas delivery pipe 4. The end of the gas delivery pipe 4 away from the conical guide pipe 6 is connected to the upper surface of the sampler body 1. Multiple grooves 21 are formed on the inner wall of the sampler body 1, and a filter screen 22 is mounted on the inner wall of each set of grooves 21.

[0022] like Figure 3 As shown, a second fixing plate 28 is installed on the right side of the sampler body 1. An air storage tank 17 is installed on the upper surface of the second fixing plate 28 to store compressed air generated by the air compressor 9, maintain stable air pressure output, avoid air pressure fluctuations caused by frequent start-stop of the compressor, and ensure stable pressure during purging by the high-pressure nozzle 24. Two support plates 16 are installed on the upper surface of the second fixing plate 28, and the air compressor 9 is installed on the upper surface of the two support plates 16 together to generate high-pressure compressed air, which is transported to the air storage tank 17 through the connecting pipe 18 for storage, providing power for cleaning the filter screen 22 pores, and used for subsequent purging. High-pressure nozzle 24 blows away residual particles from the filter holes. The output end of air compressor 9 is connected to a connecting pipe 18. The end of connecting pipe 18 away from air compressor 9 is connected to the outer surface of air tank 17. The output end of air tank 17 is connected to a second delivery pipe 15. The end of second delivery pipe 15 away from air tank 17 passes through sampler body 1 and is connected to high-pressure nozzle 24, which is installed inside sampler body 1. It converts compressed air into high-pressure airflow and sprays it onto the surface and pores of filter screen 22 to remove residual particles, especially tiny particles embedded in the pores of filter screen 22, so as to avoid residual particles interfering with the accuracy of the next sampling.

[0023] like Figure 2 As shown, a first fixing plate 13 is installed on the left side of the sampler body 1. A vacuum cleaner 14 is installed on the upper surface of the first fixing plate 13, and a collection box 10 is installed on the upper surface of the first fixing plate 13 to store residual particles collected by the vacuum cleaner 14 for subsequent unified treatment such as disposal or secondary analysis, avoiding direct emission of particles and causing pollution. A box door 11 is hinged to the left side of the collection box 10. The input end of the vacuum cleaner 14 is connected to a suction pipe 27. The end of the suction pipe 27 away from the vacuum cleaner 14 is connected to a four-way pipe 23. The outer surface of the four-way pipe 23 is connected to multiple suction branch pipes 26. The end of each suction branch pipe 26 away from the four-way pipe 23 passes through the sampler body 1 and is connected to a suction frame 20. Dust branch pipe 26 connects the dust collection frame 20 and the four-way pipe 23. The suction force generated by the vacuum cleaner 14 sucks in the residual particles in the holes of the different filter screens 22 blown by the high-pressure nozzle 24 and then sends them into the collection box 10 through the first conveying pipe 12. The four-way pipe 23 is connected to the vacuum cleaner 14 through the dust collection pipe 27 to realize the centralized conveying of particles in multiple directions. The output end of the vacuum cleaner 14 is connected to the first conveying pipe 12. The end of the first conveying pipe 12 away from the vacuum cleaner 14 is connected to the upper surface of the collection box 10. The first fixing plate 13 is used to install the vacuum cleaner 14 and the collection box 10. The second fixing plate 28 is used to install the air compressor 9 and the air tank 17 to prevent the equipment from shifting due to vibration during operation and to ensure the stability of the pipeline connection.

[0024] like Figure 1As shown, a sampling door 7 is hinged to the front of the sampler body 1, which also provides an operating channel for the installation, replacement, and disassembly of the filter 22 and the maintenance and inspection of the internal components nozzle. A controller 2 is installed on the outer surface of the sampler body 1, and multiple support legs 8 are installed on the bottom surface of the sampler body 1 to support the entire device and keep the sampler body 1 at a certain distance from the ground to avoid the ground moisture directly affecting the device.

[0025] The working principle of this utility model is as follows: First, the operator confirms through the controller 2 that the power supply to each component is normal, the sampling door 7 is in a closed and sealed state, the filter screen 22 is installed in the slide groove 21 in descending order of aperture size, and the support leg 8 is firmly supporting the sampler body 1. Then, the operator turns on the air compressor 9 through the controller 2. The air compressor 9 delivers compressed air to the air tank 17 through the connecting pipe 18. After the air pressure in the air tank 17 reaches the preset value, the air compressor 9 automatically stops. At the same time, the annular heating wire 19 is activated, and the heat insulation shell 5 outside the air supply pipe 4 reduces heat loss, allowing the internal temperature of the air supply pipe 4 to gradually rise to the temperature required for dehumidification. After the above preparations are completed, the operator... The centrifugal fan 25 is started by the controller 2. After being drawn in, the outside air is initially rectified by the conical guide pipe 6 and enters the air supply pipe 4. Inside the air supply pipe 4, the annular heating wire 19 continuously heats the air, and the moisture in the air evaporates. The dehumidified air enters the sampler body 1 along the air supply pipe 4. After entering the sampler body 1, the air flows through multiple layers of filter screens 22. Since the pore size of the filter screens 22 gradually decreases from the air inlet to the air outlet, large-diameter particles are intercepted by the upper filter screen 22, while medium and small-diameter particles are captured by the corresponding layers of filter screens 22, thus completing the graded sampling. After sampling, the staff can manually open the sampling door 7 and take out the captured particles from the filter screens 22 for subsequent analysis and processing.

[0026] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A graded sampler with a multi-layer perforated plate structure, characterized in that, The sampler includes a sampler body (1), on the upper surface of which two support columns (3) are installed. A centrifugal fan (25) is installed on the side of the two support columns (3) that are close to each other. The output end of the centrifugal fan (25) is connected to a conical guide pipe (6). The end of the conical guide pipe (6) away from the centrifugal fan (25) is connected to a gas supply pipe (4). An annular heating wire (19) is installed on the outer surface of the gas supply pipe (4). A heat insulation shell (5) is installed on the outer surface of the gas supply pipe (4). The end of the gas supply pipe (4) away from the conical guide pipe (6) is connected to the upper surface of the sampler body (1). The inner wall of the sampler body (1) is provided with multiple sliding grooves (21). A filter screen (22) is installed on the inner wall of each set of sliding grooves (21).

2. A graded sampler with a multi-layer perforated plate structure according to claim 1, characterized in that, A second fixing plate (28) is installed on the right side of the sampler body (1). An air storage tank (17) is installed on the upper surface of the second fixing plate (28). Two support plates (16) are installed on the upper surface of the second fixing plate (28). An air compressor (9) is installed on the upper surface of the two support plates (16).

3. A graded sampler with a multi-layer perforated plate structure according to claim 2, characterized in that, The output end of the air compressor (9) is connected to a connecting pipe (18), and the end of the connecting pipe (18) away from the air compressor (9) is connected to the outer surface of the air storage tank (17).

4. A graded sampler with a multi-layer perforated plate structure according to claim 2, characterized in that, The output end of the gas storage tank (17) is connected to a second delivery pipe (15), and the end of the second delivery pipe (15) away from the gas storage tank (17) passes through the sampler body (1) and is connected to a high-pressure nozzle (24).

5. A graded sampler with a multi-layer perforated plate structure according to claim 1, characterized in that, A first fixing plate (13) is installed on the left side of the sampler body (1), a vacuum cleaner (14) is installed on the upper surface of the first fixing plate (13), a collection box (10) is installed on the upper surface of the first fixing plate (13), and a box door (11) is hinged on the left side of the collection box (10).

6. A graded sampler with a multi-layer perforated plate structure according to claim 5, characterized in that, The vacuum cleaner (14) has a suction pipe (27) connected to its input end. The end of the suction pipe (27) away from the vacuum cleaner (14) is connected to a four-way pipe (23). The outer surface of the four-way pipe (23) is connected to multiple suction branch pipes (26). The end of each suction branch pipe (26) away from the four-way pipe (23) passes through the sampler body (1) and is connected to a suction frame (20). The output end of the vacuum cleaner (14) is connected to a first conveying pipe (12). The end of the first conveying pipe (12) away from the vacuum cleaner (14) is connected to the upper surface of the collection box (10).

7. A graded sampler with a multi-layer perforated plate structure according to claim 1, characterized in that, The front of the sampler body (1) is hinged with a sampling door (7), a controller (2) is installed on the outer surface of the sampler body (1), and multiple support legs (8) are installed on the bottom surface of the sampler body (1).

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