Atmospheric particulate matter sampling cutter and sampling equipment

Abstract

The present invention discloses an atmospheric particulate matter sampling cutter and sampling equipment, wherein the sampling cutter includes a cutter body for collecting gas, an external cleaning component arranged on the outside of the sampling hood, and the external cleaning component can clean the outside of the hood wall of the sampling hood with the help of a cleaning brush; and also includes an internal cleaning component arranged inside the sampling hood, and the internal cleaning component can clean the hood wall inside the sampling hood with the help of a cleaning tube. The beneficial effect of the present invention is that this solution performs double cleaning of the sampling hood on the inside and outside with different cleaning methods respectively by providing an internal cleaning component and an external cleaning component. This solution uses a cleaning brush to brush the outer wall of the sampling hood, and can only brush off larger debris isolated from the outside of the sampling hood. This solution uses a cleaning tube and a blower to reversely blow air from the inside to the outside of the sampling hood, clearing blockages in the mesh of the sampling hood and reducing the adhesion of debris on the outer wall of the sampling hood.

Description

Technical Field

[0001] The present invention relates to the technical field of ambient atmosphere monitoring, in particular to an atmospheric particulate matter sampling cutter and sampling equipment. Background Art

[0002] With the acceleration of industrialization and urbanization, the pollution caused by atmospheric particulate matter is becoming increasingly serious. It not only affects air quality but also may induce various respiratory diseases. To effectively deal with atmospheric particulate matter pollution, accurate monitoring and assessment of the concentration and composition of atmospheric particulate matter are prerequisites for meteorological services. Relevant personnel need to use atmospheric particulate matter sampling cutters to sample particulate matter.

[0003] The document with prior art publication number CN221612479U provides an air particulate sampler cutter. The device is equipped with a cleaning rack, a sealing rubber ring and a tightening mechanism, so that the tightening block cooperates with the anti-slip rubber block to fit tightly with the outer wall of the air particulate sampler body, which can achieve the purpose of fixing and limiting the cutter body. At the same time, it is easy to drive the anti-slip rubber block away from the outer wall of the air particulate sampler body, making it easier and faster to disassemble and convenient for staff to use.

[0004] Although the above-mentioned existing technical solutions have reduced the difficulty of disassembly and assembly of the cutter to a certain extent, they still have the following defects: in order to prevent large-sized floating objects in the external air (such as catkins, large particles of sand and dust) from affecting the normal sampling of the sampler, the cutters currently on the market will be installed with filters to block these foreign objects. However, after a certain period of use, many floating objects will inevitably adhere to the filter, resulting in the inability of external air to enter smoothly, seriously affecting the smooth sampling of atmospheric particulate matter.

[0005] Furthermore, with the aforementioned technical solutions and most similar sampling devices on the market, when multiple samplers are required at a given sampling location, workers must manually replace the samplers during the sampling process. Because the entire sampling process can take a long time, this approach is extremely inconvenient and increases the burden on workers. In light of this, we propose an atmospheric particulate matter sampling cutter and a sampling device that can automatically replace the cutter. Summary of the Invention

[0006] In view of one of the deficiencies of the prior art, the present invention provides an atmospheric particulate matter sampling cutter and sampling equipment.

[0007] To achieve the above object, the present invention provides the following technical solution: an atmospheric particulate matter sampling and cutting device, comprising

[0008] a cutter body for collecting gas;

[0009] The sampling cover is arranged around the outside of the cutter body; mesh holes are distributed on the cover wall of the sampling cover, and a mounting structure is provided at the lower part of the cutter body;

[0010] An external cleaning component is arranged on the outside of the sampling cover and can clean the outside of the cover wall of the sampling cover;

[0011] The inner cleaning component is arranged inside the sampling cover and can clean the cover wall inside the sampling cover.

[0012] Preferably, the external cleaning assembly comprises a cleaning brush with an elongated brush body, the length direction of the cleaning brush is parallel to the axial direction of the sampling cover, and the brush body of the cleaning brush is in contact with the outer wall of the sampling cover;

[0013] The internal cleaning component includes a cleaning tube arranged inside the sampling cover, and the axis of the cleaning tube is parallel to the axis of the sampling cover; a plurality of air outlet holes are distributed on the tube body of the cleaning tube, and the air outlet holes are opened toward the cover wall of the sampling cover.

[0014] Preferably, at least one pair of cleaning brushes are provided on the outside of the sampling cover in a symmetrical structure;

[0015] At least one pair of cleaning tubes is provided inside the sampling cover in a symmetrical structure;

[0016] Also includes:

[0017] The cleaning drive assembly is linked with the cleaning brush and the cleaning tube. The cleaning drive assembly can drive the cleaning brush to rotate along the outer wall of the sampling cover and can drive the cleaning tube to rotate around the axis of the sampling cover.

[0018] Preferably, the inner cleaning component further comprises:

[0019] An air outlet nozzle is provided corresponding to each air outlet hole of the cleaning tube;

[0020] The cleaning drive assembly can inject a cleaning airflow into the cleaning pipe.

[0021] Preferably, the cleaning drive assembly includes:

[0022] A fan, wherein an air flow path is formed between an air outlet end of the fan and an air outlet nozzle of the cleaning pipe;

[0023] A transmission member, which can rotate under the blowing of the fan airflow, and the transmission member is linked with the cleaning brush and the cleaning tube, and the transmission member can drive the cleaning brush and the cleaning tube to rotate;

[0024] The support tube is fixedly arranged inside the sampling cover; the interior of the support tube is a cavity; the transmission member is an impeller group that can be rotated by wind, and the transmission member is arranged inside the support tube and is rotatably connected to the support tube;

[0025] The driving tube is coaxially arranged with the collecting cover, the driving tube is rotatably connected with the collecting cover, and the driving tube is linked with the cleaning brush and the cleaning tube through the supporting structure; the tube body of the driving tube is linked with the transmission member.

[0026] Preferably, the cleaning drive assembly further includes:

[0027] An air injection cylinder, wherein the tube body of the drive tube extends into the air injection cylinder, and the portion of the drive tube inside the air injection cylinder is provided with an air inlet;

[0028] a first air supply pipe, one end of which is connected to the air outlet of the fan and the other end of which extends into the interior of the support tube, wherein the end of the first air supply pipe located inside the support tube is opened toward the transmission member;

[0029] The second air delivery pipe has an air inlet end connected to the interior of the support cylinder and an air outlet end extending into the air injection cylinder.

[0030] An atmospheric particulate matter sampling device, comprising:

[0031] The sampling body is provided with an air extraction device inside, and the air extraction passage of the air extraction device is connected to the cutter body of the sampling cutter according to any one of claims 1 to 6;

[0032] The carrying mechanism includes a protective shell for placing the sampling cutter, and the protective shell can isolate the periphery of the sampling cover; the sampler cutter located in the carrying mechanism is connected to the gas passage of the sampling body through the mounting structure;

[0033] The replacement mechanism can switch the on-off state of the gas passage between the sampling cutter and the sampling body; the replacement mechanism and the protective shell are linked. When the gas passage between the sampling cutter and the sampling body is connected, the protective shell avoids the outside of the sampling cover, and the sampling cover can inhale external air.

[0034] Preferably, the sampling body includes:

[0035] An intermediate tube, provided in a group corresponding to each of the sampling cutters;

[0036] Suction pipe, which can extract the external air;

[0037] The replacement mechanism comprises:

[0038] The support pipe is a vertical pipe, one end of which is connected to the air intake pipe, and the support pipe and the air intake pipe are rotatably connected;

[0039] A rotating frame fixedly connected to the support tube;

[0040] At least one receiving tube is provided, the receiving tube is slidably connected to the rotating frame, and the rotating frame can drive the receiving tube to rotate synchronously;

[0041] A lifting frame, linked with the receiving tube, can drive the receiving tube to move toward or away from the intermediate tube;

[0042] When the receiving pipe is close to the middle pipe, the middle pipe is connected to the supporting pipe through the receiving pipe;

[0043] Preferably, the replacement mechanism further includes:

[0044] There are several sealing plugs, and the total number of sealing plugs and receiving tubes corresponds to the number of the sampling cutters; the sealing plug is slidably connected to the rotating frame, and the rotating frame can drive the sealing plug to rotate synchronously; the lifting frame is linked to the sealing plug, and can drive the sealing plug to move toward or away from its corresponding intermediate tube.

[0045] Preferably, the carrying mechanism further includes:

[0046] A pusher, at least one of which is provided on the lower side of each protective shell, the pusher being connected to the protective shell;

[0047] The pushing track is linked with the rotating frame, and the pushing track can rotate synchronously with the rotating frame; a lifting groove is opened on the pushing track, the lifting groove is an arc groove, and the junction of the lifting groove and the pushing track is an arc transition structure; the pushing member is slidably connected to the pushing track.

[0048] Compared with the existing technology, it has the following beneficial effects:

[0049] 1. The cleaning mechanism of this solution provides an inner cleaning component and an outer cleaning component to perform double cleaning on the inner and outer sides of the sampling cover using different cleaning methods.

[0050] 2. The cleaning mechanism of this solution uses a cleaning brush to brush the outer wall of the sampling cover, which can only brush away the larger debris isolated on the outside of the sampling cover.

[0051] 3. The cleaning mechanism of this solution uses a cleaning tube and a fan to reverse the airflow from the inside to the outside of the sampling cover to clear the blockage in the mesh of the sampling cover and reduce the adhesion of debris on the outer wall of the sampling cover.

[0052] 4. The cleaning mechanism of this solution uses the fan as both the rotational power and air flow supply source of the cleaning mechanism, without the need for an additional motor.

[0053] 5. The cleaning equipment of this solution blocks the sampling cutter in the standby state through the coordinated use of the replacement mechanism and the carrying mechanism to ensure that it is not affected by the external environment.

[0054] 6. The cleaning equipment of this solution is combined with a rotating frame and a lifting frame. When the cutter body needs to be replaced, the receiving pipe can be extended into the corresponding intermediate pipe above, eliminating the need for manual replacement by the staff, thereby reducing the labor intensity of the staff.

[0055] 7. The cleaning equipment of this solution can effectively ensure the airtightness between the receiving tube and the intermediate tube by setting a sealing airbag, preventing equipment leakage from affecting the normal sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a schematic diagram of the overall structure of the sampling cutter according to an embodiment of the present application;

[0057] Figure 2 This is a schematic diagram of a cutaway state of a sampling cover of a sampling cutter according to an embodiment of the present application;

[0058] Figure 3 This is a schematic diagram of the cleaning mechanism structure of the sampling cutter according to an embodiment of the present application;

[0059] Figure 4 This is a schematic diagram of the overall structure of the sampling device according to an embodiment of the present application;

[0060] Figure 5 This is a schematic cross-sectional view of the mounting housing structure of the sampling device according to an embodiment of the present application;

[0061] Figure 6 This is a schematic cross-sectional view of the protective housing structure of the sampling device according to an embodiment of the present application;

[0062] Figure 7 This is a schematic diagram of the replacement mechanism structure of the sampling device according to an embodiment of the present application;

[0063] Figure 8 This is a schematic structural diagram of a driving assembly and a lifting assembly of a sampling device according to an embodiment of the present application;

[0064] Figure 9 This is a schematic diagram of the anti-leakage mechanism structure of the sampling device according to an embodiment of the present application;

[0065] Figure 10 This is a schematic diagram of the structure of the carrying mechanism in the sampling device according to an embodiment of the present application.

[0066] In the picture:

[0067] 1. Sampling cover; 101. Mesh; 2. Mounting shell; 3. Intermediate tube; 4. Top cover; 401. Sealing groove; 5. Suction pipe;

[0068] 6. Cleaning mechanism; 601. Cleaning rack; 602. Cleaning brush; 603. Cleaning tube; 604. First air pipe; 605. Driving tube; 607. Air outlet nozzle; 608. Second air pipe; 609. Transmission member; 610. Support cylinder; 611. Fan; 612. Air injection cylinder;

[0069] 7. Replacement mechanism; 701. Support tube; 702. Rotating frame; 703. Receiver tube; 704. Drive block; 705. Hose; 706. Lifting frame; 707. Sealing plug; 708. Drive housing; 709. Guide groove; 710. Positioning groove; 711. Dual-axis motor; 712. Driving gear; 713. Crown gear; 714. Limit plate; 715. Push rod; 716. Reciprocating screw;

[0070] 8. Leakage prevention mechanism; 801. Sealing airbag; 802. Inlet pipe; 803. Exhaust pipe; 804. Transfer pipe; 805. Second spring; 806. Air blocking plate;

[0071] 9. Carrying mechanism; 901. Pushing track; 902. Lifting slot; 903. Pushing member; 904. Rotating column; 905. First spring; 906. Protective housing;

[0072] 10. Sampling body; 11. Cutter body; 12. Mounting structure. DETAILED DESCRIPTION

[0073] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0074] See also Figure 1-Figure 3 , this application provides the following technical solutions:

[0075] An atmospheric particulate matter sampling cutter is applied to a sampling cover 1 of a cylindrical structure. Figure 1 and Figure 2Taking the sampling cutter shown in the figure as an example, the sampling cutter comprises a cutter body 11, which can be constructed using existing technology. A sampling cover 1 is secured to the outside of the cutter body 11. The sampling cover 1 is a cylindrical cover with mesh holes 101 distributed along its wall. The mesh holes 101 shown in the figure are simplified schematic representations; in actual manufacturing, the mesh holes of the sampling cover 1 can be finer. A top cover 4 is provided at the top end of the sampling cover 1, and an annular sealing groove 401 is provided on the underside of the top cover 4. The sampler body 11 is positioned lower inside the sampling cover 1. The lower portion of the cutter body 11 extends to the outside of the lower end of the sampling cover 1. A mounting structure 12 is provided at the bottom end of the cutter body 11. The mounting structure 12 is a structure for connecting pipes and is connected to the gas path within the cutter 11. The mounting structure 12 can be threaded, plug-in, or other structural forms, as long as it facilitates connection to external pipelines. The specific form is not limited.

[0076] The cleaning mechanism corresponding to the above-mentioned sampling cutter includes an external cleaning component and an internal cleaning component. The external cleaning component is arranged on the outside of the sampling cover 1 and is in the form of a cleaning brush 602. The brush body of the cleaning brush 602 cleans the outside of the cover wall of the sampling cover 1. The internal cleaning component is arranged inside the sampling cover 1 and uses air blowing to clean the cover wall inside the sampling cover 1.

[0077] This solution uses the cleaning brush 602 to clean the outer wall of the sampling cover 1. The brushing force of the cleaning brush 602 is used to remove the residue on the outer wall of the sampling cover 1. While the outer cleaning component is working, the inner cleaning component blows air into the sampling cover 1 to remove the residue in the mesh 101 of the sampling cover 1. At the same time, the residue on the outer wall of the sampling cover 1 is blown back to reduce its adhesion, making it easier for the cleaning brush 602 to brush it off.

[0078] On the basis of the above embodiment, the cleaning brush 602 of the external cleaning assembly adopts a long strip brush structure, and two cleaning brushes are symmetrically arranged on the outside of the sampling cover 1. The length direction of the cleaning brush 602 is parallel to the axial direction of the sampling cover 1, and the brush body of the cleaning brush 602 is in contact with the outer wall of the sampling cover 1. Figure 2 A cleaning frame 601 is rotatably provided on the sampling cover 1 . The cleaning frame 601 is a circular frame structure as a whole. A cleaning brush 602 is provided on both sides of the cleaning frame 601 .

[0079] The internal cleaning assembly includes a cleaning tube 603 disposed inside the sampling hood 1. The cleaning tube 603 is disposed vertically, with its axis parallel to the axis of the sampling hood 1. The cleaning tube 603 has a plurality of air outlets distributed on its body, connected to air outlet nozzles 607, which are opened toward the wall of the sampling hood 1. The air outlet nozzles 607 can be existing air nozzles that can converge the airflow and increase the airflow intensity.

[0080] Corresponding to the cleaning brush 602 and the cleaning tube 603, a cleaning drive assembly is provided inside the sampling cover 1 to provide rotational power for the two. The cleaning drive assembly is linked to the cleaning frame 601 and the cleaning tube 603, and the cleaning drive assembly drives the cleaning frame 601 and the cleaning tube 603 to rotate with the axis of the sampling cover 1 as the axis. As a result, the cleaning brush 602 rotates along the outer wall of the sampling cover 1, and the cleaning tube 603 rotates inside the sampling cover 1. The cleaning drive assembly also plays the role of injecting air into the cleaning tube 603. Air is injected into the cleaning tube 603 through the cleaning drive assembly, so that the air is blown from the air outlet 607 to the cover wall of the sampling cover 1, forming a reverse impact cleaning effect of airflow from the inside to the outside.

[0081] Based on the above embodiment, the cleaning drive assembly includes a fan 611 and a transmission member 609, wherein the fan 611 can be an existing air pump. The air outlet of the fan 611 is connected to the air inlet of the cleaning tube 603 through a pipeline, and air is injected into the cleaning tube 603. The transmission member 609 is set in the air path of the fan 611. The transmission member 609 adopts an impeller structure that can be rotated by the wind. The transmission member 609 uses the air flow force of the fan 611 to generate a rotational force. Then, the transmission member 609 is linked with the cleaning frame 601 and the cleaning tube 603 to achieve the rotation effect of the cleaning brush 602 and the cleaning tube 603.

[0082] Based on the above implementation plan, see Figure 2 The cleaning brush 602 and the cleaning tube 603 are not in the same plane, that is, there is an angle between them. The specific angle is not limited. The setting of this angle is mainly to take into account that when the air outlet 607 of the cleaning tube 603 blows air, if the cleaning brush 602 and the cleaning tube 603 are arranged in an inner and outer relative structure, the internal airflow may be blocked by the cleaning brush 602, resulting in a poor backwash cleaning effect.

[0083] On the basis of the above implementation scheme, the supporting structure corresponding to the cleaning tube 603 includes a driving tube 605, which is coaxially arranged with the collection cover 1. The upper end of the driving tube 605 is fixedly connected to the cleaning frame 601. The driving tube 605 is connected and communicated with the cleaning tube 603 through a horizontal tube as a supporting structure; the tube body of the driving tube 605 and the transmission part 609 are linked.

[0084] With this structural form, the transmission member 609 and the drive tube 605 form a basic linkage structure, thereby achieving a linkage effect in which the airflow force of the fan 611 is converted into the rotational output force of the transmission member 609. There are many ways to link the transmission member 609 and the drive tube 605, such as using the transmission member 609 as an impeller assembly directly and coaxially fixedly connected to the drive tube 605, or using a belt and pulley combination, a sprocket and chain combination, a gear set, etc.

[0085] On the basis of the above implementation scheme, this solution takes the form of the transmission member 609 and the driving tube 605 being coaxially fixed as an example to provide an implementation method. A support cylinder 610 is fixedly set inside the sampling cover 1. The interior of the support cylinder 610 is a cavity, and the transmission member 609 is set inside the support cylinder 610. Figure 3 The driving tube 605 passes through the supporting tube 610 , and the transmission member 609 is fixedly connected to the portion of the driving tube 605 located inside the supporting tube 610 .

[0086] A first air pipe 604 is provided between the air outlet of the fan 611 and the support tube 610. One end of the first air pipe 604 located inside the support tube 610 opens toward the transmission member 609. The air flow blown out through the first air pipe 604 blows the transmission member 609, thereby rotating the drive tube 605.

[0087] An air injection cylinder 612 is fixedly installed on the lower side of the support cylinder. The tube body of the drive tube 605 extends into the air injection cylinder 612, and the portion of the drive tube 605 inside the air injection cylinder 612 is provided with an air inlet. An air outlet is provided on the support cylinder 612, and a second air supply pipe 608 is provided between the air outlet and the air injection cylinder 612. After the air flow blown out by the fan 611 enters the support cylinder 610, it drives the transmission member 609 to rotate inside the support cylinder 610, and the air flow enters the air injection cylinder 612 through the second air supply pipe 608, and then enters the drive tube 605 from the air injection cylinder 612, flows through the pipeline of the drive tube 605, flows through the cleaning tube 603, and is ejected from the air outlet nozzle 607.

[0088] Through this solution, the cleaning mechanism does not need to be equipped with a motor as a power source. With the help of the fan 611, the backblowing inside the sampling cover 1 can be achieved, and at the same time, it serves as the rotational power of the cleaning brush 602.

[0089] See also Figures 4 to 10The present solution also proposes an atmospheric particulate matter sampling device, which uses a sampling cutter with the sampling mechanism 6 of the present solution as described above. The sampling device includes a sampling body 10, and an exhaust device is provided inside the sampling body 10. The exhaust passage of the exhaust device is connected to the cutter body 11 of the sampling cutter for exhaust sampling. The sampling device is provided with a carrying mechanism 9, and four sampling cutters can be configured through the carrying mechanism 9. The carrying mechanism 9 includes a protective shell 906 for placing the sampling cutter. One protective shell 906 is provided for each sampling cutter. The protective shell 906 is a cylindrical structure and can isolate the side of the sampling cover 1. The sampler cutter located in the carrying mechanism 9 is connected to the gas passage of the sampling body 10 through the mounting structure 12. The protective shell 906 can be raised and lowered. When it rises to a high position, the upper edge of the protective shell 906 is stuck in the sealing groove 401 of the top cover 4. In this state, the protective shell 906 forms a shield on the side of the sampling cover 1. When it descends, the sampling cover 1 inside the protective shell 906 is exposed, and external air samples can be drawn.

[0090] In order to realize the automatic replacement and use of multiple sampling cutters, the sampling device is provided with a replacement mechanism 7, which can switch the on-off state of the gas passage between the sampling cutter and the sampling body 10, and the replacement mechanism 7 and the protective shell 906 are linked. When the gas path of one of the sampling cutters is connected to the sampling body 10, its corresponding protective shell 906 descends, and the sampling cover 1 can inhale external air. When the sampling cutter finishes sampling, the protective shell 906 on its side rises, and the air extraction path between the sampling body 10 and the sampling cutter is closed. The other sampling cutter enters the working state. In this way, the sampling cutters can be rotated and used, and no manual replacement is required before the entire sampling process is completed.

[0091] Based on the above embodiment, the sampling body 10 includes four intermediate tubes 3, one set for each sampling cutter. The intermediate tubes 3 are coaxial with the protective housing 906, and the upper ends of the intermediate tubes 3 are connected to the mounting structure 12 of the sampling body 10. The sampling body 10 is equipped with an air intake pipe 5, which is connected to the internal exhaust device and extracts external air through the air intake pipe 5. A mounting housing 2 is provided above the sampling body 10, and the replacement mechanism 7 is disposed within the mounting housing 2.

[0092] The replacement mechanism 7 includes a vertically arranged support tube 701, one end of which is connected to the intake pipe 5, and the support tube 701 and the intake pipe 5 are rotatably connected. A rotating frame 702 is arranged on the support tube 701. The rotating frame 702 is a cross-shaped frame body, and the axis thereof is fixedly connected to the support tube 701. A receiving tube 703 is vertically slidably connected to one bracket of the rotating frame 702. The rotating frame 702 can drive the receiving tube 703 to rotate synchronously; the receiving tube 703 and the support tube 701 are connected by a hose 705. Three sealing plugs 707 are arranged on the other three brackets of the rotating frame 702. A lifting frame 706 is arranged on the lower side of the receiving tube 703 and the sealing plug 707. The lifting frame 706 supports the sealing plug 707 and the receiving tube 703 on the lower side.

[0093] As the lifting frame 706 rises, the receiving tube 703 and the sealing plug 707 rise. The three sealing plugs 707 seal the three intermediate tubes 3 corresponding to the three sampling cutters above them, and the receiving tube 703 connects to another intermediate tube 3, allowing air to be extracted. When the sampling cutter has completed sampling, the lifting frame 706 descends, the sealing plug 707 and the receiving tube 703 move downward synchronously, and the rotating frame 702 rotates 90 degrees. The lifting frame 706 rises again to sample the next sampling cutter.

[0094] Based on the above implementation scheme, this solution provides a specific implementation method of the rotating frame 702 and the lifting frame 706. Figure 7 and Figure 8 A dual-axis motor 711 is fixedly installed in the mounting shell 2, and a drive shell 708 is fixedly connected to the tube body of the support tube 701. A limit plate 714 and a shift rod 715 are fixedly installed on the motor shaft on one side of the dual-axis motor 711, and the limit plate 714 is a circular disc. The drive shell 708 has a hemispherical structure and is coaxial with the support tube 701. A guide groove 709 that is compatible with the shift rod 715 is provided on the drive shell 708. A positioning groove 710 is provided on the drive shell 708, and the limit plate 714 is slidably connected to the positioning groove 710. When the dual-axis motor 711 is running, the shift rod 715 can be periodically engaged with the guide groove 709. By shifting the shift rod 715, the drive shell 708 is rotated with a period of 90°.

[0095] As the linkage structure of the lifting frame 706, this solution is equipped with a reciprocating screw 716, which is rotatably connected to the bottom of the mounting housing 2. The reciprocating screw 716 is slidably engaged with the drive block 704, which is fixedly connected to the lifting frame 706. The reciprocating screw 716 is coaxially fixedly connected to the crown gear 713. The other motor shaft of the dual-axis motor 711 is fixedly connected to the driving gear 712. The driving gear 712 is an incomplete gear mechanism and meshes with the crown gear 713. The driving block 704 is fixedly connected to the interior of the lifting frame 706, and the driving block 704 and the reciprocating screw 716 are threadedly connected.

[0096] Driven by the dual-axis motor 711, the shifting rod 715 intermittently shifts the drive housing 708, causing the support tube 701 to rotate the receiving tube 703 and the sealing plug 707 via the turret 702. When the receiving tube 703 rotates to the designated position, the driving gear 712 gradually engages with the crown gear 713, the reciprocating screw 716 rotates, and the drive block 704 then drives the lifting frame 706 upward, thereby feeding the receiving tube 703 into the corresponding intermediate tube 3. When the sampling cutter needs to be replaced, the dual-axis motor 711 continues to operate, the shifting rod 715 still does not contact the guide groove 709, the driving gear 712 remains engaged with the crown gear 713, and the reciprocating screw 716 continues to rotate, allowing the lifting frame 706 to smoothly drive the receiving tube 703 and the sealing plug 707 downward, releasing the air from the sampling cutter. The aforementioned rotation of the turret 702 is then repeated to switch to the next sampling cutter.

[0097] Based on the above implementation plan, see Figure 10 The carrying mechanism 9 also includes a pusher 903, which is a roller. One pusher 903 is provided on the lower side of each protective shell 906. The pusher 903 is rotatably connected to the protective shell 906 through a roller frame. A rotating column 904 is coaxially fixedly connected to the upper end of the support tube 701, and a push track 901 is coaxially fixedly connected to 904. The push track 901 is an annular track as a whole. The pusher 903 is slidably connected to the push track 901 and moves within the push track 901. A lifting groove 902 is provided on the push track 901. The junction of the lifting groove 902 and the push track 901 is an arc-shaped transition structure; the pusher 903 is slidably connected to the push track 901. When the pusher 903 moves to the position of the lifting groove 902, the pusher 903 descends, and its corresponding protective shell 906 also descends synchronously. The sampling cover 1 inside the protective shell 906 is exposed to the outside, and external gas can be collected. The position of the lifting groove 902 corresponds to the position of the receiving tube 703.

[0098] On the basis of the above implementation scheme, in order to ensure the sealing effect of the protective shell 906 and the top cover 4, the sealing groove 401 of the protective shell 906 and the top cover 4 adopts an interference fit connection method. In this case, in order to ensure that the protective shell 906 can be lowered and separated from the top cover 4 at the position of the lifting groove 902, a first spring 905 is provided at the bottom of the protective shell 906. It is only necessary to satisfy that when the pushing member 903 is located in the pushing track 901, the first spring 905 deforms and stores force, and when the pushing member 903 is located in the lifting groove 902, the first spring 905 restores its deformation. One end of the first spring 905 is fixedly connected to the protective shell 906, and the other end is fixed in an appropriate position. As shown in the attached Figure 10 As shown, the first spring 905 is located below the protective shell 906 , so its upper end is fixedly connected to the bottom end of the protective shell 906 , and its lower end can be fixed to one side of the tube body of the intermediate tube 3 through a support plate.

[0099] Based on the above embodiment, the connecting tube 703 can be directly inserted into the intermediate tube 3, but this may cause leakage at the connection. Therefore, this embodiment provides a leak-proof mechanism 8 between the intermediate tube 3, the connecting tube 703, and the sealing plug 707. The leak-proof mechanism 8 seals the gas connection between the intermediate tube 3 and the replacement mechanism 7, that is, the surrounding walls of the intermediate tube 3, the connecting tube 703, and the sealing plug 707.

[0100] The leak-proof mechanism 8 includes an annular sealing bladder 801, which is sleeved onto the end of the intermediate tube 3 near the receiving tube 703. The receiving tube 703 can be inserted into the middle of the sealing bladder 801. When the sealing bladder 801 is inflated, its outer surface abuts against the inner wall of the intermediate tube 3, while its inner surface abuts against the outer wall of the receiving tube 703, achieving a seal.

[0101] Based on the above embodiment, the sealed airbag 801 is connected to the air inlet pipe 802 and the exhaust pipe 803. The air inlet pipe 802 only needs to be able to flow air inwards by means of the air path inside the device. A one-way valve structure is provided on each of the air inlet pipe 802 and the exhaust pipe 803.

[0102] For example, the exhaust device inside the sampling body 10 can be used as the air outlet end of the air inlet pipe 802 of the sealed airbag 801. When the pressure inside the sealed airbag 801 is too high, the exhaust pipe 803 will exhaust and release the pressure.

[0103] Based on the above-mentioned embodiment, this embodiment provides a one-way valve structure, which includes a transfer tube 804 embedded in the air inlet pipe 802 and the air outlet pipe 803. An air blocking plate 806 is slidably connected to the transfer tube 804, and a second spring 805 is fixedly connected between the transfer tube 804 and the air blocking plate 806. When the sampling body 10 is in operation, a portion of air will enter the air inlet pipe 802, push open the corresponding air blocking plate 806, and enter the sealing airbag 801, so that the sealing airbag 801 is always full, effectively ensuring airtightness. At the same time, due to the provision of the exhaust pipe 803, excess gas will push open the corresponding air blocking plate 806 and be discharged outward, so that the sealing airbag 801 can always be in a suitable state, avoiding damage to the sealing airbag 801, which is conducive to ensuring the smooth progress of atmospheric sampling.

[0104] In the description of the present application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0105] In this application and its embodiments, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0106] In the present application and its embodiments, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0107] The disclosure above provides many different embodiments or examples for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0108] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0109] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. An atmospheric particulate matter sampling and cutting device, characterized in that: include a cutter body for collecting gas; The sampling cover is arranged around the outside of the cutter body; mesh holes are distributed on the cover wall of the sampling cover, and a mounting structure is provided at the lower part of the cutter body; An external cleaning component is arranged on the outside of the sampling cover and can clean the outside of the cover wall of the sampling cover; An internal cleaning component is arranged inside the sampling cover and can clean the cover wall inside the sampling cover; The external cleaning assembly includes a cleaning brush with an elongated brush body, the length direction of the cleaning brush is parallel to the axial direction of the sampling cover, and the brush body of the cleaning brush is in contact with the outer wall of the sampling cover; The inner cleaning assembly includes a cleaning tube arranged inside the sampling cover, wherein the axis of the cleaning tube is parallel to the axis of the sampling cover; a plurality of air outlet holes are distributed on the tube body of the cleaning tube, and the air outlet holes are opened toward the cover wall of the sampling cover; At least one pair of cleaning brushes is provided on the outside of the sampling cover in a symmetrical structure; At least one pair of cleaning tubes is provided on the inner side of the sampling cover in a symmetrical structure; Also includes: A cleaning drive assembly is linked with the cleaning brush and the cleaning tube, and the cleaning drive assembly can drive the cleaning brush to rotate along the outer wall of the sampling cover, and can drive the cleaning tube to rotate around the axis of the sampling cover; The inner cleaning component also includes: An air outlet nozzle is provided corresponding to each air outlet hole of the cleaning tube; The cleaning drive assembly can inject a cleaning airflow into the cleaning pipe; The cleaning drive assembly comprises: A fan, wherein an air flow path is formed between an air outlet end of the fan and an air outlet nozzle of the cleaning pipe; A transmission member is capable of rotating under the influence of the airflow of the fan, and the transmission member is linked with the cleaning brush and the cleaning tube, and the transmission member can drive the cleaning brush and the cleaning tube to rotate; The support tube is fixedly arranged inside the sampling cover; the interior of the support tube is a cavity; the transmission member is an impeller group that can be rotated by wind, and the transmission member is arranged inside the support tube and is rotatably connected to the support tube; The driving tube is coaxially arranged with the collecting cover, the driving tube is rotatably connected with the collecting cover, and the driving tube is linked with the cleaning brush and the cleaning tube through the supporting structure; the tube body of the driving tube is linked with the transmission member.

2. The atmospheric particulate matter sampling and cutting device according to claim 1, characterized in that: The cleaning drive assembly further includes: An air injection cylinder, wherein the tube body of the drive tube extends into the air injection cylinder, and the portion of the drive tube inside the air injection cylinder is provided with an air inlet; a first air supply pipe, one end of which is connected to the air outlet of the fan and the other end of which extends into the interior of the support tube, wherein the end of the first air supply pipe located inside the support tube is opened toward the transmission member; The second air delivery pipe has an air inlet end connected to the interior of the support cylinder and an air outlet end extending into the air injection cylinder.

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