Air particulate matter sampler

Abstract

The utility model provides an air particulate matter sampler which comprises a rotating disc assembly, the rotating disc assembly comprises a rotating disc structure and a driving structure, and the rotating disc structure is provided with a first avoiding hole, a second avoiding hole and a third avoiding hole; the driving structure is connected with the turntable structure; the sample assembly comprises a first push rod head and a first push rod structure, the first push rod head corresponds to the first avoiding hole, and the first push rod structure is connected with the first push rod head; the sampling assembly comprises a second push rod head and a second push rod structure, the second push rod head corresponds to the second avoiding hole, and the second push rod structure is connected with the second push rod head; wherein a filter membrane clamp is arranged in the third avoiding hole, the driving structure drives the turntable structure to rotate, the third avoiding hole is switched to the position of the second avoiding hole, the second push rod structure jacks up the filter membrane clamp in the third avoiding hole through the second push rod head, and the first push rod structure jacks up the filter membrane clamp in the second avoiding hole through the first push rod head. And automatic film changing can be achieved.

Description

Technical Field

[0001] This application relates to the field of air sample collection technology, and more specifically, to an air particulate matter sampler. Background Technology

[0002] Air particulate matter samplers capture total suspended particulates and inhalable particulates in the ambient atmosphere using a filter membrane weighing method for routine aerosol detection. Currently, air particulate matter samplers are mainly operated by personnel, requiring manual on-site filter membrane replacement. When continuous long-term sampling or multi-filter interval sampling is required, this introduces a large amount of repetitive work for operators and significantly increases their workload. For sampling units, on-site operation also increases personnel costs. Therefore, there is a need for an air particulate matter sampler. Utility Model Content

[0003] The purpose of this application is to provide an air particulate matter sampler that can automatically change the membrane.

[0004] In a first aspect, embodiments of this application provide an air particulate matter sampler, comprising: a turntable assembly, including a turntable structure and a driving structure, the turntable structure being configured with a first clearance hole, a second clearance hole, and a third clearance hole; the driving structure being connected to the turntable structure; a sample assembly, including a first push rod head and a first push rod structure, the first push rod head corresponding to the first clearance hole, and the first push rod structure being connected to the first push rod head; and a sampling assembly, including a second push rod head and a second push rod structure, the second push rod head corresponding to the second clearance hole, and the second push rod structure being connected to the second push rod head; wherein a filter membrane clip is disposed within the third clearance hole, the driving structure drives the turntable structure to rotate, so that the third clearance hole switches to the position of the second clearance hole, the second push rod structure lifts the filter membrane clip within the third clearance hole via the second push rod head, and the first push rod structure lifts the filter membrane clip within the second clearance hole via the first push rod head.

[0005] In the above implementation process, the first push rod head is connected to the first push rod structure, the second push rod head is connected to the second push rod structure, and the drive structure is connected to the turntable structure. When sampling is required, the first push rod structure drives the first push rod head to descend, the second push rod structure drives the second push rod head to descend, and the drive structure drives the turntable structure to rotate, thereby switching the positions of the first clearance hole, the second clearance hole, and the third clearance hole. After the filter membrane clip in the second clearance hole is switched to the position of the second clearance hole, the second push rod structure lifts the second push rod head, causing the filter membrane clip at the position of the second clearance hole to rise for sampling. The first push rod structure lifts the first push rod head, causing the filter membrane clip at the position of the first clearance hole to rise for recycling to the storage bin. This process is repeated to achieve automatic membrane changing, greatly reducing the labor intensity of manual labor.

[0006] In some embodiments, the first push rod structure includes a sample shaft push rod, a first sample push rod support, and a second sample push rod support, wherein the first sample push rod support and the second sample push rod support are respectively connected to the sample shaft push rod, and the sample shaft push rod is connected to the first push rod head.

[0007] In the above process, the sample shaft push rod is fixed by the first sample push rod support and the second sample push rod support. The sample shaft push rod can push the first push rod head to rise or fall, so as to avoid the rotation of the turntable structure. At the same time, after rising, the filter membrane clamp can be recycled to the storage bin, which is conducive to automated sampling. Moreover, the overall motion structure is a mature standard part, with low cost, few moving parts, low processing cost and low installation difficulty.

[0008] In some embodiments, the first push rod structure further includes a sample light shield and a sample photoelectric switch. The sample light shield is connected to the sample shaft push rod, and the sample photoelectric switch is located on one side of the sample light shield. When the sample shaft push rod is in its lowest position, the sample light shield switches the on / off state of the sample photoelectric switch.

[0009] In the above process, the sample shaft push rod drives the sample light-shielding plate to move. After the sample light-shielding plate moves to the lowest position, the on / off attribute of the sample photoelectric switch can be switched, thereby feeding the information back to the system. This facilitates the system to control the drive structure to drive it. Its control principle is simple, with few moving parts, and low processing cost and installation difficulty.

[0010] In some embodiments, the second push rod structure includes a sampling shaft push rod, a first sampling push rod support, a second sampling push rod support, and a sampling tube. The first sampling push rod support and the second sampling push rod support are respectively connected to the sampling shaft push rod, and the sampling tube is connected to the sampling shaft push rod.

[0011] In the above implementation process, the first sampling push rod support and the second sampling push rod support are used to fix the sampling shaft push rod. The sampling shaft push rod can push the second push rod head to rise or fall, so as to avoid the rotation of the turntable structure. At the same time, after rising, it can complete the movement and start sampling. The overall motion structure is a mature standard part, with low cost, few moving parts, low processing cost and low installation difficulty.

[0012] In some embodiments, the second push rod structure further includes a reset member, which is sleeved on the sampling shaft push rod and positioned below the sampling tube. By sleeved a reset member on the sampling shaft push rod, the second push rod head and the filter membrane clamp located thereon can be held in place by the reset member after movement, ensuring gas path sealing and initiating sampling. The overall motion structure is a mature standard component, with low cost, few moving parts, and low processing cost and installation difficulty.

[0013] In some embodiments, the second push rod structure further includes a sampling light shield, a first sampling photoelectric switch, and a second sampling photoelectric switch, wherein the sampling light shield is connected to the sampling shaft push rod and is located between the first sampling photoelectric switch and the second sampling photoelectric switch.

[0014] In the above implementation process, the sampling light shield is located between the first sampling photoelectric switch and the second sampling photoelectric switch. When the sampling light shield moves down or up through the sampling shaft push rod, it can switch the on / off attribute of the first sampling photoelectric switch or the second sampling photoelectric switch, thereby feeding the information back to the system, which is conducive to the intelligent control of the system. The overall motion structure is a mature standard part, with low cost, few moving parts, and low processing cost and installation difficulty.

[0015] In some embodiments, the turntable structure includes a turntable component, a cover plate, a positioning plate, and a support component. The turntable component is connected to the drive structure, the cover plate is connected to the turntable component, the positioning plate is disposed on the side of the turntable component opposite to the cover plate, and the support component is connected between the turntable component and the positioning plate.

[0016] In the above process, the positioning plate supports the turntable component through the support component. After the driving structure is fixed to the positioning plate, it can be used to drive the turntable component to rotate, thereby switching the positions of the first clearance hole, the second clearance hole and the third clearance hole, realizing automatic film changing, which greatly reduces the labor intensity of manual labor.

[0017] In some embodiments, the drive structure includes a drive member, a turntable shaft, and a gear transmission mechanism, wherein the drive member is connected to the gear transmission mechanism, and the turntable shaft is connected to the gear transmission mechanism.

[0018] In the above process, the drive unit is connected to the turntable shaft through a gear transmission mechanism to achieve stable transmission according to the required transmission ratio, thereby switching the positions of the first clearance hole, the second clearance hole and the third clearance hole to achieve automatic film changing, which greatly reduces the labor intensity of manual labor.

[0019] In some embodiments, the air particulate sampler further includes a connecting tube seat located above the second clearance hole, such that when the second push rod structure lifts the second push rod head, the second push rod head contacts the connecting tube seat. Sampling can begin after the second push rod head makes sealed contact with the connecting tube seat, resulting in high sampling efficiency, few moving parts, and low processing cost and installation difficulty.

[0020] In some embodiments, the air particulate sampler further includes an identification module, which includes an identification structure, a first detection switch, and a second detection switch. The identification structure is disposed above the turntable structure and is used to identify the filter membrane clip that has switched from the position of the third clearance hole to the position of the second clearance hole. The second clearance hole is disposed between the first detection switch and the second detection switch and is used to detect the filter membrane clip in the second clearance hole.

[0021] In the above implementation process, the identification structure can scan and identify the filter membrane clip and record the data. When the filter membrane clip switches to the second clearance hole position, the first detection switch and the second detection switch simultaneously change from open to closed, indicating that the filter membrane clip has accurately reached the second clearance hole position, thus realizing automatic membrane replacement and greatly reducing the labor intensity of manual labor.

[0022] Other features and advantages of this application will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the above-described techniques of this application.

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the air particulate matter sampler provided in the embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the air particulate matter sampler provided in an embodiment of this application from another perspective;

[0027] Figure 3 A top view of an air particulate matter sampler provided in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram showing the distribution of the turntable components of the air particulate matter sampler provided in the embodiments of this application.

[0029] Reference numerals: 100, Turntable assembly; 101, Turntable component; 1011, First clearance hole; 1012, Second clearance hole; 1013, Third clearance hole; 102, Cover plate; 103, Positioning plate; 104, Support component; 105, Drive component; 106, Turntable shaft; 107, Reducer drive wheel; 108, Reducer driven wheel; 109, Support plate; 200, Sample assembly; 201, First push rod head; 202, Sample shaft push rod; 203, First sample push rod support; 204, Second sample push rod support; 205, Sample light shield; 20 6. Sample photoelectric switch; 207. Sample push rod; 300. Sampling assembly; 301. Second push rod head; 302. Sampling shaft push rod; 303. First sampling push rod support; 304. Second sampling push rod support; 305. Sampling tube; 306. Reset component; 307. Sampling light shield; 308. First sampling photoelectric switch; 309. Second sampling photoelectric switch; 400. Connecting tube seat; 500. Identification module; 501. Identification component; 502. Connecting seat; 503. First detection switch; 504. Second detection switch; 600. Filter membrane clamp. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more. Example

[0035] Airborne particulate matter is a general term for various solid and liquid particulate matter present in the atmosphere. A particulate matter sampler is a sampler used to manually collect airborne particulate matter by gravity. An automatic membrane-changing particulate matter sampler can store multiple filter membranes and can automatically switch between unsampled, sampling, and sampled filter membranes.

[0036] During the design process, the inventors discovered that the atmospheric particulate matter samplers commonly used in manual gravimetric sampling of air particles are ordinary single-membrane samplers. After each filter membrane is sampled, it is necessary to collect the sampled filter membrane and place a new filter membrane to be sampled, which is a huge workload. Because quality control requires all points to start from parallel and the points to be relatively dispersed according to the standard settings, the time requirement for changing the filter membrane is tight, requiring multiple people to operate at the same time, which is very troublesome.

[0037] In view of this, such as Figures 1-4As shown, in a first aspect, embodiments of this application provide an air particulate matter sampler, including: a turntable assembly 100, comprising a turntable structure and a drive structure, the turntable structure being configured with a first clearance hole 1011, a second clearance hole 1012, and a third clearance hole 1013; the drive structure being connected to the turntable structure; a sample assembly 200, comprising a first push rod head 201 and a first push rod structure, the first push rod head 201 corresponding to the first clearance hole 1011, and the first push rod structure being connected to the first push rod head 201; and a sampling assembly 300, comprising a second push rod head 301 and a second push rod structure. The second push rod head 301 corresponds to the second clearance hole 1012, and the second push rod structure is connected to the second push rod head 301; wherein, a filter membrane clamp 600 is disposed in the third clearance hole 1013, and the driving structure drives the turntable structure to rotate so that the third clearance hole 1013 switches to the position of the second clearance hole 1012, the second push rod structure lifts the filter membrane clamp 600 in the third clearance hole 1013 through the second push rod head 301, and the first push rod structure lifts the filter membrane clamp 600 in the second clearance hole 1012 through the first push rod head 201.

[0038] For example, the first clearance hole 1011, the second clearance hole 1012, and the third clearance hole 1013 can be distributed at equal intervals on the turntable structure. The position of the first clearance hole 1011 is set as a sample station, and the filter membrane clip 600 in the sample station is a sampled filter membrane clip 600, which can be used to collect the sampled filter membrane clip 600. The position of the second clearance hole 1012 is set as a sampling station, and the filter membrane clip 600 in the sampling station is a sampling filter membrane clip 600, which can be used for sampling. The third clearance hole 1013 is set as a sampling station, and the filter membrane clip 600 in the sampling station is a sampled filter membrane clip 600, which can provide a sampled filter membrane clip 600 for the position of the second clearance hole 1012 when the driving structure is driven.

[0039] like Figure 4 As shown, to improve accuracy and avoid misjudgment, the turntable structure can be divided into several first regions (e.g., three) and several second regions (e.g., three). The first region is used to provide one of the three clearance holes 1011, 1012, and 1013. The second region is disposed between two adjacent first regions to separate the first clearance holes 1011, 1012, and 1013. The first region corresponds to angle a, and the second region corresponds to angle b. The angle a is smaller than the angle b, but the angle a can also be set to be larger than the angle b.

[0040] In the above implementation process, the first push rod head 201 is connected to the first push rod structure, the second push rod head 301 is connected to the second push rod structure, and the drive structure is connected to the turntable structure. When sampling is required, the first push rod structure drives the first push rod head 201 to descend, the second push rod structure drives the second push rod head 301 to descend, and the drive structure drives the turntable structure to rotate, so as to switch the positions of the first clearance hole 1011, the second clearance hole 1012, and the third clearance hole 1013. After the filter membrane clip 600 in the second clearance hole 1012 is switched to the position of the second clearance hole 1012, the second push rod structure lifts the second push rod head 301, so that the filter membrane clip 600 at the position of the second clearance hole 1012 rises for sampling. The first push rod structure lifts the first push rod head 201, so that the filter membrane clip 600 at the position of the first clearance hole 1011 rises for recycling to the storage bin. This process is repeated to achieve automatic membrane changing, which greatly reduces the labor intensity of manual labor.

[0041] like Figures 1-2 As shown, the first push rod structure includes a sample shaft push rod 202, a first sample push rod support 203, and a second sample push rod support 204. The first sample push rod support 203 and the second sample push rod support 204 are respectively connected to the sample shaft push rod 202. The sample shaft push rod 202 includes, but is not limited to, an electric push rod. The first sample support and the second sample support can be distributed on both sides of the sample shaft push rod 202, and the first sample support and the second sample support are respectively fixed to the positioning plate 103 of the turntable structure. The upper end of the sample shaft push rod 202 is connected to the first push rod head 201. The first push rod structure also includes a sample push rod 207, which is respectively connected to the sample shaft push rod 202 and the first push rod head 201.

[0042] In the above-mentioned process, the sample shaft push rod 202 is fixed by the first sample push rod support 203 and the second sample push rod support 204. The sample shaft push rod 202 can push the first push rod head 201 to rise or fall, so as to avoid the rotation of the turntable structure. At the same time, after rising, the filter membrane clamp 600 can be retrieved to the storage bin, which is conducive to automated sampling. Moreover, the overall motion structure is a mature standard part, with low cost, few moving parts, and low processing cost and installation difficulty.

[0043] like Figure 2As shown, the first push rod structure also includes a sample light shield 205 and a sample photoelectric switch 206. The sample light shield 205 is connected to the sample shaft push rod 202. The sample photoelectric switch 206 is located on one side of the sample light shield 205. When the sample shaft push rod 202 is in the lowest position, the sample light shield 205 switches the on / off state of the sample photoelectric switch 206. The sample light shield 205 and the sample photoelectric switch 206 are both located between the positioning plate 103 and the turntable 101.

[0044] In the above process, the sample shaft push rod 202 drives the sample light shield 205 to move. After the sample light shield 205 moves to the lowest position, the on / off attribute of the sample photoelectric switch can be switched, thereby feeding the information back to the system. This makes it convenient for the system to control the drive structure to drive. Its control principle is simple, with few moving parts, low processing cost and low installation difficulty.

[0045] Please refer to again Figure 1 and Figure 2 The second push rod structure includes a sampling shaft push rod 302, a first sampling push rod support 303, a second sampling push rod support 304, and a sampling tube 305. The sampling shaft push rod 302 includes, but is not limited to, an electric push rod. The first sampling push rod support 303 and the second sampling push rod support 304 are respectively connected to the sampling shaft push rod 302. The sampling tube 305 is connected to the sampling shaft push rod 302. The lower end of the sampling tube 305 is provided with a slotted hole, which can be movably connected to the sampling shaft push rod 302 by a connecting pin. The first sampling push rod support 303 and the second sampling push rod support 304 are located on both sides of the sampling shaft push rod 302, and the first sampling push rod support 303 and the second sampling push rod support 304 are respectively connected to the positioning plate 103.

[0046] In the above implementation process, the first sampling push rod support 303 and the second sampling push rod support 304 are used to fix the sampling shaft push rod 302. The sampling shaft push rod 302 can push the second push rod head 301 to rise or fall, so as to avoid the rotation of the turntable structure. At the same time, after rising, it can complete the movement and start sampling. The overall motion structure is a mature standard part with low cost, few moving parts, low processing cost and low installation difficulty.

[0047] In some embodiments, the second push rod structure further includes a reset member 306, which includes, but is not limited to, a spring. The reset member 306 is sleeved on the sampling shaft push rod 302 and is located below the sampling tube 305. For example, the reset member 306 is located between the positioning plate 103 and the turntable 101, with one end abutting against the positioning plate 103 and the other end abutting against the sampling tube 305. By sleeved with the reset member 306 on the sampling shaft push rod 302, the second push rod head 301 and the filter membrane clamp 600 located thereon can be held in place by the reset member 306 after they stop moving, ensuring the air path is sealed and sampling begins. The overall motion structure is a mature standard part, with low cost, few moving parts, and low processing cost and installation difficulty.

[0048] Please refer to again Figure 2 The second push rod structure also includes a sampling light shield 307, a first sampling photoelectric switch 308, and a second sampling photoelectric switch 309. The sampling light shield 307 is connected to the sampling shaft push rod 302, and the sampling light shield 307 is located between the first sampling photoelectric switch 308 and the second sampling photoelectric switch 309. For example, the first sampling photoelectric switch 308 is located below the sampling light shield 307, and the second sampling photoelectric switch 309 is located above the sampling light shield 307. All three of the sampling light shield 307, the first sampling photoelectric switch 308, and the second sampling photoelectric switch 309 are located between the positioning plate 103 and the turntable 101.

[0049] In the above implementation process, the sampling light shield 307 is located between the first sampling photoelectric switch 308 and the second sampling photoelectric switch 309. When the sampling light shield 307 moves down or up through the sampling shaft push rod 302, it can switch the on / off attribute of the first sampling photoelectric switch 308 or the second sampling photoelectric switch 309, thereby feeding the information back to the system, which is conducive to the intelligent control of the system. The overall motion structure is a mature standard part, with low cost, few moving parts, and low processing cost and installation difficulty.

[0050] In some embodiments, the turntable structure includes a turntable component 101, a cover plate 102, a positioning plate 103, and a support component 104. The turntable component 101 is connected to the drive structure, the cover plate 102 is connected to the turntable component 101, the positioning plate 103 is disposed on the side of the turntable component 101 opposite to the cover plate 102, the support component 104 connects the turntable component 101 and the positioning plate 103, the turntable component 101 is connected above the support component 104, the positioning plate 103 is connected below the support component 104, and the support component 104 includes, but is not limited to, a support plate.

[0051] In the above process, the positioning plate 103 supports the turntable 101 through the support member 104. After the driving structure is fixed to the positioning plate 103, it can be used to drive the turntable 101 to rotate, thereby switching the positions of the first clearance hole 1011, the second clearance hole 1012 and the third clearance hole 1013, realizing automatic film changing, which greatly reduces the labor intensity of manual labor.

[0052] Please refer to again Figure 2 The driving structure includes a driving component 105, a turntable shaft 106, and a gear transmission mechanism. The driving component 105 is connected to the gear transmission mechanism, and the turntable shaft 106 is also connected to the gear transmission mechanism. The driving component 105 includes, but is not limited to, a stepper motor. The turntable shaft 106 can be located at the center of the turntable component 101. The gear transmission mechanism includes a reduction drive wheel 107 and a reduction driven wheel 108. The reduction drive wheel 107 is fixed to the turntable shaft 106, and the reduction drive wheel 107 meshes with the reduction driven wheel 108. The turntable structure also includes a support plate 109, which is connected to the lower part of the turntable component 101. The support plate 109 is provided with a bearing, and one end of the turntable component 101 is fixed to the bearing.

[0053] In the above process, the drive component 105 is connected to the turntable shaft 106 through the gear transmission mechanism to achieve stable transmission according to the required transmission ratio, thereby switching the positions of the first clearance hole 1011, the second clearance hole 1012 and the third clearance hole 1013 to achieve automatic film changing, which greatly reduces the labor intensity of manual labor.

[0054] In some embodiments, the air particulate sampler further includes a connecting tube seat 400, which is located above the second clearance hole 1012, such that when the second push rod structure lifts the second push rod head 301, the second push rod head 301 contacts the connecting tube seat 400. Sampling can begin after the second push rod head 301 makes sealed contact with the connecting tube seat 400, resulting in high sampling efficiency, few moving parts, and low processing cost and installation difficulty.

[0055] In some embodiments, the air particulate sampler further includes an identification module 500, which includes an identification structure, a first detection switch 503, and a second detection switch 504. The identification structure is disposed above the turntable structure and is used to identify the filter membrane clip 600 as it switches from the position of the third clearance hole 1013 to the position of the second clearance hole 1012. The identification structure includes an identification element 501 and a connecting seat 502. The identification element 501 is connected to the connecting seat 502. An identification code is provided on the filter membrane clip 600, which may be a barcode or a QR code, etc. The identification module 500 is used to identify the identification code. The second clearance hole 1012 is disposed between the first detection switch 503 and the second detection switch 504 and is used to detect the filter membrane clip 600 within the second clearance hole 1012.

[0056] It is understood that the first detection switch 503 is located between the second clearance hole 1012 and the third clearance hole 1013, and the second detection switch 504 is located between the first clearance hole 1011 and the second clearance hole 1012. When the above identification is not completed, the driving member 105 rotates in the opposite direction until the first detection switch 503 changes from pass to open and then back to pass. At this point, the driving member 105 stops working and then rotates in the forward direction to continue identification. The identification module 500 re-completes the above identification and recording work, and the filter membrane clamp 600 moves from the position of the third clearance hole 1013. After switching to the second clearance hole 1012 position, the above positioning and sampling are completed. The filter membrane on the filter membrane clamp 600 is stored in a custom-assigned identification file and marked in the log. If the sampling tube 305 moves to the top and the sampling light shield 307 blocks the second sampling photoelectric switch 309, causing the second sampling photoelectric switch 309 to change from pass to open, the system is fed back that there is no filter membrane at this station, the sampling is terminated, and the aforementioned custom identification code is terminated based on this judgment. The log is reported, the sampling is completed, and the sampler continues the above work, thereby completing the continuous automatic membrane changing work.

[0057] In the above implementation process, the identification structure can scan and identify the filter membrane clip 600 and record it. When the filter membrane clip 600 switches to the position of the second clearance hole 1012, the first detection switch 503 and the second detection switch 504 simultaneously change from open to closed, thus determining that the filter membrane clip 600 has accurately reached the position of the second clearance hole 1012, realizing automatic membrane replacement and greatly reducing the labor intensity of manual labor.

[0058] In all embodiments of this application, "large" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The embodiments of this application will not elaborate further on the expression of such relative terms.

[0059] It should be understood that the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and membranes involved are not necessarily essential to the present application.

[0060] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0061] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. An air particulate sampler characterized by, The air particulate matter sampler comprises: a rotating disc assembly, comprising a rotating disc structure and a driving structure, wherein the rotating disc structure is provided with a first avoiding hole, a second avoiding hole and a third avoiding hole, and the driving structure is connected to the rotating disc structure; a sample assembly, comprising a first push rod head and a first push rod structure, wherein the first push rod head corresponds to the first avoiding hole, and the first push rod structure is connected to the first push rod head; a sampling assembly, comprising a second push rod head and a second push rod structure, wherein the second push rod head corresponds to the second avoiding hole, and the second push rod structure is connected to the second push rod head; wherein a filter membrane clamp is arranged in the third avoiding hole, the driving structure drives the rotating disc structure to rotate, so that the third avoiding hole is switched to the position of the second avoiding hole, the second push rod structure lifts the filter membrane clamp in the third avoiding hole through the second push rod head, and the first push rod structure lifts the filter membrane clamp in the second avoiding hole through the first push rod head.

2. The air particulate sampler of claim 1, wherein, The first push rod structure comprises a sample shaft push rod, a first sample push rod support and a second sample push rod support, the first sample push rod support and the second sample push rod support are respectively connected to the sample shaft push rod, and the sample shaft push rod is connected to the first push rod head.

3. The air particulate sampler of claim 2, wherein, The first push rod structure further comprises a sample light shield and a sample photoelectric switch, the sample light shield is connected to the sample shaft push rod, the sample photoelectric switch is located on one side of the sample light shield, and when the sample shaft push rod is in the lowest position, the sample light shield switches the on-off of the sample photoelectric switch.

4. The air particulate sampler of claim 1, wherein, The second push rod structure comprises a sampling shaft push rod, a first sampling push rod support, a second sampling push rod support and a sampling tube, the first sampling push rod support and the second sampling push rod support are respectively connected to the sampling shaft push rod, and the sampling tube is connected to the sampling shaft push rod.

5. The air particulate sampler of claim 4, wherein, The second push rod structure further comprises a reset member, the reset member is sleeved on the sampling shaft push rod, and the reset member is limited below the sampling tube.

6. The air particulate sampler of claim 4 or 5, wherein, The second push rod structure further comprises a sampling light shield, a first sampling photoelectric switch and a second sampling photoelectric switch, the sampling light shield is connected to the sampling shaft push rod, and the sampling light shield is located between the first sampling photoelectric switch and the second sampling photoelectric switch.

7. The air particulate sampler of claim 1, wherein, The rotating disc structure comprises a rotating disc piece, a cover plate, a positioning plate and a support piece, the rotating disc piece is connected to the driving structure, the cover plate is connected to the rotating disc piece, the positioning plate is arranged on the side of the rotating disc piece away from the cover plate, and the support piece is connected between the rotating disc piece and the positioning plate.

8. The air particulate sampler of claim 1 or 7, wherein, The driving structure comprises a driving piece, a rotating disc shaft and a gear transmission mechanism, the driving piece is connected to the gear transmission mechanism, and the rotating disc shaft is connected to the gear transmission mechanism.

9. The air particulate sampler of claim 1, wherein, The air particulate matter sampler further comprises a connecting pipe seat, which is located above the second avoiding hole, so that when the second push rod structure lifts the second push rod head, the second push rod head contacts the connecting pipe seat.

10. The air particulate sampler of claim 1, wherein, The air particulate sampler further comprises an identification module, which comprises an identification structure, a first detection switch and a second detection switch. The identification structure is arranged above the rotating disc structure and is used for identifying the filter membrane clamp switched from the position of the third avoiding hole to the position of the second avoiding hole. The first detection switch and the second detection switch are arranged with the second avoiding hole therebetween and are used for detecting the filter membrane clamp in the second avoiding hole.

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