Outdoor particulate matter sampling device

Abstract

The utility model provides a kind of outdoor particulate matter sampling device, it is related to sampling equipment technical field, to solve the problem that its sampling pump is vulnerable to environmental interference and cannot run when existing sampling device is used in outdoor environment and is designed.The outdoor particulate matter sampling device includes sampling pump assembly, cutting head, connecting pipe, sealed bag and protective cover, sampling pump assembly is arranged inside sealed bag, cutting head is arranged outside sealed bag, one end of connecting pipe is connected with the air inlet of sampling pump assembly, the other end of connecting pipe is connected with cutting head, the air outlet of sampling pump assembly is communicated with outside;Protective cover is installed in connecting pipe, and protective cover is used to cover cutting head.The sampling pump assembly of the utility model is not vulnerable to environmental interference.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, and more specifically, to an outdoor particulate matter sampling device. Background Technology

[0002] Currently, particulate matter remains the primary air pollutant, as it is easily inhaled and thus affects health. To gain a deeper understanding of the composition of particulate matter, sampling and analysis of it is typically necessary.

[0003] To ensure the accuracy of sampling results, the sampling device needs to be placed outdoors. However, the outdoor environment is unpredictable, especially in harsh conditions such as rain, which can easily interfere with the sampling pump, causing it to malfunction and leading to sampling failure. Furthermore, existing sampling devices are bulky and inconvenient for outdoor installation and use. Utility Model Content

[0004] The purpose of this invention is to provide an outdoor particulate matter sampling device to solve the technical problem that the sampling pump of existing sampling devices is easily affected by environmental interference and cannot operate when used in outdoor environments.

[0005] The outdoor particulate matter sampling device provided by this utility model includes a sampling pump assembly, a cutting head, a connecting pipe, a sealing bag, and a protective cover. The sampling pump assembly is disposed inside the sealing bag, and the cutting head is disposed outside the sealing bag. One end of the connecting pipe is connected to the air inlet of the sampling pump assembly, and the other end of the connecting pipe is connected to the cutting head. The air outlet of the sampling pump assembly is open to the outside. The protective cover is installed on the connecting pipe and is used to cover the cutting head.

[0006] Furthermore, the sealed bag is made of aluminum foil-faced pearl cotton, with the aluminum foil side facing outwards and the pearl cotton side facing inwards.

[0007] Furthermore, the outdoor particulate matter sampling device also includes an installation component, which is fixedly disposed on the sealed bag and is used to fix the sealed bag outdoors.

[0008] Furthermore, the mounting component has hanging holes.

[0009] Furthermore, the outlet of the sampling pump assembly is connected to an exhaust pipe, which passes through the sealed bag and connects to the outside.

[0010] Furthermore, the exhaust pipe is equipped with a one-way valve, which is configured to open the exhaust port to the outside.

[0011] Furthermore, the protective cover includes a top wall and side walls connected to the circumference of the top wall, the top wall being fitted and fixed to the connecting pipe, and the side walls surrounding the cutting head.

[0012] Furthermore, the top wall is ridge-shaped.

[0013] Furthermore, the protective cover includes a first cover and a second cover that are spliced ​​together. The first cover has a first half-hole and a slot, and the second cover has a second half-hole and a plug. In the spliced ​​state of the first cover and the second cover, the first half-hole and the second half-hole align to form a mounting hole, and the wall of the mounting hole is tightly fitted to the outer surface of the connecting pipe. The plug is inserted into the slot, and the first cover and the second cover are tightly fitted at the spliced ​​part.

[0014] Furthermore, the first cover has slots formed at various positions of the splicing parts, and the positions of the inserts correspond to the positions of the slots.

[0015] The beneficial effects of this outdoor particulate matter sampling device are:

[0016] An outdoor particulate matter sampling device, mainly composed of a sampling pump assembly, a cutting head, a connecting pipe, a sealing bag, and a protective cover, is installed. During use, the sampling pump assembly provides airflow power, which is transmitted to the cutting head outside the sealing bag via the connecting pipe. This allows outdoor particulate matter to be collected by the filter membrane built into the cutting head, thus obtaining a particulate matter sample. During operation, the gas generated by the sampling pump assembly can be discharged to the outside through the outlet, preventing the sealing bag from bulging or even breaking.

[0017] This outdoor particulate matter sampling device provides comprehensive protection for the sampling pump assembly by enclosing it in a sealed bag. This effectively prevents rainwater from entering the pump assembly, ensuring its safe operation and improving sampling safety. Simultaneously, the protective cover on the connecting pipe covers the cutting head, preventing it from being washed away by rainwater and thus improving sampling accuracy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the outdoor particulate matter sampling device provided in this embodiment of the utility model;

[0020] Figure 2 An exploded view of the protective cover and connecting pipe of the outdoor particulate matter sampling device provided in this embodiment of the utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100 - Sampling pump assembly; 200 - Cutting head; 300 - Connecting pipe; 400 - Sealing bag; 500 - Protective cover; 600 - Mounting parts; 610 - Hanging hole; 700 - Exhaust pipe; 710 - Check valve;

[0023] 501-Top wall; 502-Side wall; 510-First cover; 511-First half hole; 520-Second cover; 521-Second half hole; 522-Insertion block. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0025] Figure 1 This is a schematic diagram of the outdoor particulate matter sampling device provided in this embodiment. Figure 1 As shown, this embodiment provides an outdoor particulate matter sampling device, including a sampling pump assembly 100, a cutting head 200, a connecting pipe 300, a sealing bag 400, and a protective cover 500. Specifically, the sampling pump assembly 100 is disposed inside the sealing bag 400, the cutting head 200 is disposed outside the sealing bag 400, one end of the connecting pipe 300 is connected to the air inlet of the sampling pump assembly 100, the other end of the connecting pipe 300 is connected to the cutting head 200, and the air outlet of the sampling pump assembly 100 is connected to the outside. The protective cover 500 is installed on the connecting pipe 300 and is used to cover the cutting head 200.

[0026] When in use, the outdoor particulate matter sampling device utilizes a sampling pump assembly 100 to provide airflow power, which is transmitted to a cutting head 200 outside the sealed bag 400 via a connecting pipe 300. This allows outdoor particulate matter to be collected by the filter membrane built into the cutting head 200, thereby obtaining a particulate matter sample. During operation, the gas generated by the sampling pump assembly 100 can be discharged to the outside through the outlet, preventing the sealed bag 400 from bulging or even breaking.

[0027] This outdoor particulate matter sampling device provides comprehensive protection for the sampling pump assembly 100 by placing it within a sealed bag 400. This effectively prevents rainwater from entering the sampling pump assembly 100, ensuring its safe operation and improving sampling safety. Simultaneously, the protective cover 500 installed on the connecting pipe 300 also covers the cutting head 200, preventing it from being washed away by rainwater and thus improving sampling accuracy.

[0028] It should be noted that in this embodiment, the sampling pump assembly 100 includes a sampling pump and a power module. The sampling pump is electrically connected to the power module and is powered by the power module. Furthermore, a transparent window can be provided in the sealed bag 400 to observe the interior of the sealed bag 400 and to control operations such as turning the sampling pump on and off.

[0029] It should also be noted that in this embodiment, how the power module supplies power to the sampling pump, and how the sampling pump drives the cutting head 200 to work so that outdoor particulate matter is collected by the filter membrane built into the cutting head 200, are all things that those skilled in the art can know from the prior art. This embodiment does not improve on these aspects, so they will not be described in detail here.

[0030] Typically, the cutting head contains inhalable particulate matter (PM2.5). 10 PM 2.5 The sampler's cutting head mainly consists of an air inlet, a flow guide cavity, a cutting head body, an air outlet, a filter membrane holder, and the filter membrane fixed thereto. Its working principle utilizes the inertia and aerodynamic characteristics of particulate matter for classification. Specifically, the cutting head, acting as a classifier, uses aerodynamic principles to "cut" and separate particulate matter according to size, allowing only particles smaller than the target particle size to pass through. The filter membrane, acting as a collector, efficiently captures all target particulate matter from the cutting head for subsequent weighing and chemical composition analysis.

[0031] It should be noted that in this embodiment, the cutting head is an externally purchased component, and its structure and working principle can be obtained by those skilled in the art based on existing technology. This embodiment does not make any improvements to it.

[0032] In this embodiment, the sealing bag 400 is made of aluminum foil-faced pearl cotton, wherein the aluminum foil side of the aluminum foil-faced pearl cotton faces outwards and the pearl cotton side faces inwards.

[0033] With the above settings, on the one hand, the aluminum foil surface of the aluminum foil-covered pearl cotton can be used to efficiently reflect solar heat radiation, reducing the transfer of solar heat into the sealed bag 400, thereby avoiding the impact on normal operation caused by heat concentration in the sampling pump assembly 100. On the other hand, the pearl cotton surface of the aluminum foil-covered pearl cotton can also be used for heat insulation and heat preservation, preventing the sampling pump assembly 100 from failing to operate normally due to low ambient temperature.

[0034] In other words, the choice of material for the sealed bag 400 enables the sampling pump assembly 100 to operate stably in a wide temperature range and in harsh environments such as rainy weather, reducing the adverse interference of outdoor environmental conditions on the sampling pump assembly 100 during outdoor sampling, thereby ensuring sampling reliability.

[0035] It should be noted that in this embodiment, the edge of the sealing bag 400 can be sealed by heat pressing or by adhesive bonding.

[0036] Please continue to refer to Figure 1 In this embodiment, the outdoor particulate matter sampling device may further include an installation component 600, wherein the installation component 600 is fixedly disposed on the sealed bag 400, and the installation component 600 is used to fix the outdoor particulate matter sampling device outdoors.

[0037] The mounting component 600 allows the outdoor particulate matter sampling device to be used outdoors, so that the sealed bag 400 can be fixed in the outdoor environment. This ensures the outdoor particulate matter sampling device is fixed in the outdoor environment and avoids changes in the sampling environment due to significant displacement of the outdoor particulate matter sampling device, which would reduce the sampling accuracy.

[0038] Please continue to refer to Figure 1 In this embodiment, the mounting component 600 has a hanging hole 610.

[0039] The hanging hole 610 not only allows the sealed bag 400 to be hung at a set height outdoors to sample particulate matter at the set height, but also enables the quick installation and removal of the outdoor particulate matter sampling device, making it convenient to operate.

[0040] In addition, the above-mentioned configuration of the outdoor particulate matter sampling device makes it compact in structure and small in size, thus facilitating its installation and use outdoors.

[0041] In other embodiments, the mounting element 600 may also be a strap or hook, etc.

[0042] Please continue to refer to Figure 1 In this embodiment, the outlet of the sampling pump assembly 100 is connected to an exhaust pipe 700, wherein the exhaust pipe 700 passes through the sealed bag 400 and connects to the outside.

[0043] This method of using the exhaust pipe 700 to guide the gas discharged from the sampling pump assembly 100 to the outside allows the sealed bag 400 to discharge gas simply by opening a clearance hole through which the exhaust pipe 700 passes. This reduces the opening area of ​​the sealed bag 400, thereby reducing the impact on the sealing performance of the sealed bag 400.

[0044] It should be noted that, in this embodiment, the connecting pipe 300 can be tightly fitted to the sealing bag 400 at the part where it passes through the sealing bag 400 to ensure the sealing of the sealing bag 400 at that part; similarly, the exhaust pipe 700 is also tightly fitted to the sealing bag 400 at the part where it passes through the sealing bag 400 to ensure the sealing of the sealing bag 400 at that part.

[0045] Please continue to refer to Figure 1 In this embodiment, the exhaust pipe 700 is provided with a one-way valve 710, wherein the one-way valve 710 is configured to open the outlet of the sampling pump assembly 100 to the outside.

[0046] The aforementioned one-way valve 710 allows the outlet of the sampling pump assembly 100 to be open to the outside, while blocking the outside from the outlet of the sampling pump assembly 100, thereby preventing external gas from flowing back to the outlet of the sampling pump assembly 100 and thus preventing damage to the sampling pump assembly 100 caused by external impurities entering the sampling pump assembly 100 through the outlet.

[0047] Figure 2 This is an exploded view of the protective cover 500 and connecting pipe 300 of the outdoor particulate matter sampling device provided in this embodiment. Please refer to... Figure 1 and combined Figure 2 In this embodiment, the protective cover 500 includes a top wall 501 and a side wall 502 connected to the circumference of the top wall 501. The top wall 501 is fitted and fixed to the connecting pipe 300, and the side wall 502 surrounds the cutting head 200.

[0048] The protective cover 500, as described above, not only covers the cutting head 200 from above, but also covers the cutting head 200 from the side. By covering the cutting head 200 from multiple directions, the adverse effects of rainwater on the cutting head 200 are reduced, thereby ensuring the working reliability of the cutting head 200 and improving the sampling accuracy.

[0049] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the top wall 501 is ridge-shaped.

[0050] By setting the top wall 501 of the protective cover 500 to the above shape, rainwater dripping onto the top of the protective cover 500 can be promptly discharged by the top wall 501 during rainy weather, preventing rainwater from accumulating on the top of the protective cover 500.

[0051] Please continue to refer to Figure 2 In this embodiment, the protective cover 500 may include a first cover 510 and a second cover 520 spliced ​​together. The first cover 510 is provided with a first half-hole 511 and a slot, and the second cover 520 is provided with a second half-hole 521 and a plug 522. In the spliced ​​state of the first cover 510 and the second cover 520, the first half-hole 511 and the second half-hole 521 are connected to form a mounting hole, and the wall of the mounting hole is tightly fitted with the outer surface of the connecting pipe 300. The plug 522 is inserted into the slot, and the first cover 510 and the second cover 520 are tightly fitted at the spliced ​​part.

[0052] By configuring the protective cover 500 as a unit consisting of a first cover 510 and a second cover 520, during installation, the first cover 510 and the second cover 520 can be positioned on opposite sides of the connecting pipe 300, with the first half-hole 511 and the second half-hole 521 facing each other on opposite sides of the connecting pipe 300. Then, the first cover 510 and the second cover 520 are connected together using the insertion engagement of the insert 522 and the slot. When the protective cover 500 needs to be disassembled, simply releasing the insertion engagement of the insert 522 and the slot allows the first cover 510 and the second cover 520 to be separated and removed from the connecting pipe 300.

[0053] The above-mentioned design allows the protective cover 500 to be installed and disassembled without removing the cutting head 200 connected to the end of the connecting pipe 300. On the one hand, it avoids air leakage at the connection point caused by repeated insertion and removal of the connecting pipe 300 and the cutting head 200. On the other hand, it also saves the tedious step of inserting the connecting pipe 300 into the mounting hole of the protective cover 500 and avoids pulling and damaging the connecting pipe 300 during the insertion process.

[0054] In this embodiment, the first cover 510 and the second cover 520 can be made of rubber. This design allows the elastic deformation of the rubber to compensate for deformation at the joint between the first half-hole 511 and the second half-hole 521, as well as at the joint between the first cover 510 and the second cover 520, after the first cover 510 and the second cover 520 are joined. This ensures that the mounting hole formed after the first half-hole 511 and the second half-hole 521 are joined can form an interference fit with the connecting pipe 300, and that the first cover 510 and the second cover 520 can fit tightly at the joint, preventing gaps between the connecting pipe 300 and the mounting hole, and between the joint between the first cover 510 and the second cover 520.

[0055] In this embodiment, the first half-hole 511 and the second half-hole 521 have the same diameter, and the diameters of both the first half-hole 511 and the second half-hole 521 can be the same as or slightly smaller than the outer diameter of the connecting pipe 300.

[0056] Please continue to refer to Figure 2 In this embodiment, the first cover 510 has slots at each position of the splicing part, and the position of the insert 522 corresponds to the position of the slot. That is, the second cover 520 has inserts 522 at each position of the splicing part.

[0057] This design allows the first cover 510 and the second cover 520 to be joined together, and the insertion of the insert 522 into the slot creates a labyrinth seal at the joint between the first cover 510 and the second cover 520, preventing rainwater above the protective cover 500 from flowing down to the bottom of the protective cover 500.

[0058] In addition, this arrangement of the insert 522 and the slot ensures that the first cover 510 and the second cover 520 remain connected at all positions of the splicing part, increasing the effective insertion length of the insert 522 and the slot, thereby improving the connection reliability of the first cover 510 and the second cover 520.

[0059] In other words, in this embodiment, the slot provided in the first cover 510 and the plug 522 provided in the second cover 520 not only serve to connect the first cover 510 and the second cover 520, but also form a labyrinth sealing structure between the first cover 510 and the second cover 520 to prevent rainwater from the top of the protective cover 500 from leaking to the bottom.

[0060] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0061] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] In the above embodiments, descriptions of directions such as "up", "down", and "side" are based on the accompanying drawings.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An outdoor particulate matter sampling device, characterized in that, The device includes a sampling pump assembly (100), a cutting head (200), a connecting pipe (300), a sealing bag (400), and a protective cover (500). The sampling pump assembly (100) is disposed inside the sealing bag (400), and the cutting head (200) is disposed outside the sealing bag (400). One end of the connecting pipe (300) is connected to the air inlet of the sampling pump assembly (100), and the other end of the connecting pipe (300) is connected to the cutting head (200). The air outlet of the sampling pump assembly (100) is open to the outside. The protective cover (500) is installed on the connecting pipe (300) and is used to cover the cutting head (200).

2. The outdoor particulate matter sampling device according to claim 1, characterized in that, The sealed bag (400) is made of aluminum foil-faced pearl cotton, with the aluminum foil side facing outwards and the pearl cotton side facing inwards.

3. The outdoor particulate matter sampling device according to claim 1, characterized in that, The outdoor particulate matter sampling device also includes an installation component (600), which is fixedly disposed on the sealed bag (400) and is used to fix the sealed bag (400) outdoors.

4. The outdoor particulate matter sampling device of claim 3, wherein, The mounting component (600) has a hanging hole (610).

5. The outdoor particulate matter sampling device according to claim 1, characterized in that, The sampling pump assembly (100) has an exhaust pipe (700) connected to its outlet, which passes through the sealed bag (400) and connects to the outside.

6. The outdoor particulate matter sampling device of claim 5, wherein, The exhaust pipe (700) is provided with a one-way valve (710), which is configured to open the exhaust port to the outside.

7. The outdoor particulate matter sampling device according to any one of claims 1-6, characterized in that, The protective cover (500) includes a top wall (501) and a side wall (502) connected around the top wall (501). The top wall (501) is fitted and fixed to the connecting pipe (300), and the side wall (502) surrounds the cutting head (200).

8. The outdoor particulate matter sampling device according to claim 7, characterized in that, The top wall (501) is ridge-shaped.

9. The outdoor particulate matter sampling device according to any one of claims 1-6, characterized in that, The protective cover (500) includes a first cover (510) and a second cover (520) that are spliced ​​together. The first cover (510) is provided with a first half-hole (511) and a slot, and the second cover (520) is provided with a second half-hole (521) and a plug (522). In the spliced ​​state of the first cover (510) and the second cover (520), the first half-hole (511) and the second half-hole (521) are connected to form a mounting hole, and the wall of the mounting hole is tightly fitted to the outer surface of the connecting pipe (300). The plug (522) is inserted into the slot, and the first cover (510) and the second cover (520) are tightly fitted at the spliced ​​part.

10. The outdoor particulate matter sampling device according to claim 9, characterized in that, The first cover (510) has slots formed at various positions of the splicing part, and the position of the insert (522) corresponds to the position of the slot.

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