Atmospheric particulate sampling cutter and sampling equipment

Abstract

The invention discloses an atmospheric particulate sampling cutter and sampling equipment. The sampling cutter comprises a cutter body used for collecting gas and an outer cleaning assembly arranged on the outer side of a sampling cover, and the outer cleaning assembly can clean the outer side of the cover wall of the sampling cover through a cleaning brush; the sampling device further comprises an inner cleaning assembly arranged in the sampling cover, and the inner cleaning assembly can conduct air blowing cleaning on the cover wall of the sampling cover through a cleaning pipe in the sampling cover. The sampling cover cleaning device has the beneficial effects that by arranging the inner cleaning assembly and the outer cleaning assembly in the scheme, the sampling cover is subjected to double cleaning in different cleaning modes on the inner side and the outer side respectively. According to the scheme, the sampling brush is used for brushing and sweeping the outer wall of the sampling cover, and large sundries isolated on the outer side of the sampling cover can be only brushed away. According to the scheme, the cleaning pipe is matched with the fan, airflow blowback is carried out in the sampling cover from inside to outside, blockages in meshes of the sampling cover are removed, and meanwhile the adhesive force of sundries on the outer wall of the sampling cover is reduced.

Description

Technical Field

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

[0002] With the acceleration of industrialization and urbanization, the pollution problem caused by atmospheric particulate matter is becoming increasingly serious, which not only affects air quality, but also may induce various respiratory diseases. In order to effectively deal with atmospheric particulate pollution, accurate monitoring and evaluation of the concentration and composition of atmospheric particulate matter is a prerequisite for meteorological services. Relevant staff need to use atmospheric particulate matter sampling cutters to sample particulate matter.

[0003] The document with prior art publication number CN221612479U provides an air particle 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 particle sampler body, thereby achieving 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 particle sampler body, making it easier and quicker 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, the following defects still exist: 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 equipped 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] In addition, in the above technical solutions and most of the sampling devices of this type on the market, when multiple samplers are needed at a certain sampling location, the staff can only manually replace the samplers during the sampling process. Because the entire sampling process may take a long time, this method brings great inconvenience to the staff and increases the burden on the staff. In view 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 a sampling device.

[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, used 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 arranged 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 component comprises a cleaning brush with a long 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 inner cleaning component comprises a cleaning tube arranged inside the sampling hood, wherein the axis of the cleaning tube is parallel to the axis of the sampling hood; a plurality of air outlets are distributed on the tube body of the cleaning tube, and the air outlets are opened toward the wall of the sampling hood.

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

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

[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 comprises:

[0022] A fan, an air outlet end of which forms an air flow passage with the air outlet nozzle of the cleaning pipe;

[0023] A transmission member can rotate under the blowing 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;

[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 rotationally 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 comprises:

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

[0028] A first air delivery 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, and one end of the first air delivery 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 tube, and an air outlet end extending into the air injection tube.

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

[0031] A sampling body, wherein an air extraction device is provided inside, and an 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 comprises a protective shell for placing the sampling cutter, and the protective shell can isolate the peripheral side of the sampling cover; the sampler cutter located in the carrying mechanism is connected with 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, and when the gas path of 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 subject comprises:

[0035] An intermediate tube, one set is provided corresponding to each of the sampling cutters;

[0036] A suction pipe to extract the outside air;

[0037] The replacement mechanism comprises:

[0038] The support pipe is a vertical pipe body, 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 with the supporting pipe through the receiving pipe;

[0043] Preferably, the replacement mechanism further comprises:

[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 with 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 comprises:

[0046] A pusher, at least one of which is disposed on the lower side of each of the protective shells, and the pusher is 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 provided on the pushing track, the lifting groove is an arc groove, and the junction between the lifting groove and the pushing track is an arc transition structure; the pushing member is slidably connected with the pushing track.

[0048] Compared with the prior art, it has the following beneficial effects:

[0049] 1. The cleaning mechanism of this scheme performs double cleaning of the sampling cover in different cleaning methods on the inner and outer sides by setting an inner cleaning component and an outer cleaning component.

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

[0051] 3. The cleaning mechanism of this scheme uses the cleaning tube and the 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 airflow supply source of the cleaning mechanism, without the need to set up 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 tube can be extended into the corresponding intermediate tube above, without the need for manual replacement by the staff, thereby reducing the labor intensity of the staff.

[0055] 7. The cleaning equipment of this scheme can effectively ensure the air tightness 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 installation 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 diagram of the structure of the driving component and the lifting component of the sampling device of the embodiment of the present application;

[0064] Fig. 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] Fig.10 This is a schematic diagram of the structure of the carrier mechanism in the sampling device according to an embodiment of the present application.

[0066] In the figure:

[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 frame; 602. Cleaning brush; 603. Cleaning pipe; 604. First air pipe; 605. Driving pipe; 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. Double-axis motor; 712. Driving gear; 713. Crown gear; 714. Limiting plate; 715. Push rod; 716. Reciprocating screw rod;

[0070] 8. Anti-leakage mechanism; 801. Sealing airbag; 802. Air 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 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 described embodiments 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 creative work 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 as an example, the sampling cutter includes a cutter body 11, and the cutter body 11 can be made of the existing technology. The sampling cover 1 is buckled on the outside of the cutter body 11. The sampling cover 1 is a cylindrical cover body as a whole, and meshes 101 are distributed on its cover wall. The meshes 101 shown in the accompanying drawings are simplified schematic display forms. When actually processed, the meshes of the sampling cover 1 can be made of more fine holes. The upper end of the sampling cover 1 is provided with a top cover 4, and the lower side of the top cover 4 is provided with an annular sealing groove 401. The sampler body 11 is arranged at a lower position inside the sampling cover 1. The lower part of the cutter body 11 extends to the outer side of the lower end of the sampling cover 1, and the bottom end of the cutter body 11 is provided with a mounting structure 12, which is a structure of a connecting pipe, and the mounting structure 12 is connected to the gas path inside the cutter 11. The mounting structure 12 can adopt a threaded connection, a plug-in structure, etc., as long as it is convenient to connect with the external pipeline, and 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 its cleaning form is a cleaning brush 602, and 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 brush body of the cleaning brush 602 to clean the outer wall of the sampling cover 1, and removes the residues blocked on the outer wall of the sampling cover 1 by the brushing force of the cleaning brush 602. While the outer cleaning component is working, the sampling cover 1 is blown with the help of the inner cleaning component to remove the residues in the mesh 101 of the sampling cover 1, and at the same time, the residues on the outer wall of the sampling cover 1 are blown back to reduce their adhesion, so that the cleaning brush 602 can brush them off.

[0078] On the basis of the above embodiment, the cleaning brush 602 of the external cleaning assembly adopts a long strip brush body structure, two of which 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 inner cleaning component includes a cleaning tube 603 disposed inside the sampling cover 1. The cleaning tube 603 is disposed vertically, and the axis of the tube body is parallel to the axis of the sampling cover 1. The cleaning tube 603 is provided with a plurality of air outlets distributed on the tube body, and the air outlets are connected to the air outlet nozzles 607, which are opened toward the cover wall of the sampling cover 1. The air outlet nozzles 607 adopt existing air nozzles, which can gather airflow and increase 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 with 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. Thereby, 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] On the basis of the above implementation scheme, the cleaning drive assembly includes a fan 611 and a transmission member 609, wherein the fan 611 can be an existing air pump, and 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. A transmission member 609 is arranged on the air path of the fan 611, and the transmission member 609 adopts an impeller group structure that can be blown and rotated by wind. The transmission member 609 is used to obtain the airflow blowing force of the fan 611 to form a rotational force, and 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 scheme, see Figure 2 The cleaning brush 602 and the cleaning tube 603 are not on the same plane, that is, there is an angle between the two, and the specific angle is not limited. The angle is mainly set 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 in a structure of facing each other inside and outside, the internal airflow may be blocked by the cleaning brush 602, thereby causing the reverse cleaning effect to deteriorate.

[0083] On the basis of the above implementation scheme, the supporting structure corresponding to the cleaning tube 603 includes a driving tube 605, the driving tube 605 and the collection cover 1 are coaxially arranged, the upper end of the driving tube 605 is fixedly connected to the cleaning frame 601, and the driving tube 605 is connected and communicated with the cleaning tube 603 through a transverse tube as a supporting structure; the tube body of the driving tube 605 and the transmission member 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 of converting the airflow blowing force of the fan 611 into the rotation output force of the transmission member 609. There are many linkage methods for the transmission member 609 and the drive tube 605, such as the transmission member 609 as an impeller group directly coaxially fixedly connected to the drive tube 605, or using a belt and pulley combination, a sprocket chain combination, a gear group, etc.

[0085] Based on 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 arranged inside the sampling cover 1, and the interior of the support cylinder 610 is a cavity, and the transmission member 609 is arranged inside the support cylinder 610. Figure 3 The driving tube 605 passes through the supporting tube 610 , and the transmission member 609 and the portion of the driving tube 605 located inside the supporting tube 610 are fixedly connected.

[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 airflow blown out by the first air pipe 604 blows the transmission member 609, thereby rotating the drive tube 605.

[0087] An air injection cylinder 612 is fixedly arranged at the lower side of the support cylinder, and the tube body of the driving tube 605 extends into the air injection cylinder 612, and the portion of the driving tube 605 in 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 delivery pipe 608 is provided between the air outlet and the air injection cylinder 612. After the airflow blown out by the fan 611 enters the support cylinder 610, it drives the transmission member 609 to rotate in the support cylinder 610, and the airflow enters the air injection cylinder 612 through the second air delivery pipe 608, and then enters the driving tube 605 from the air injection cylinder 612, and then flows through the pipeline of the driving tube 605 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 it can also serve as the rotational power of the cleaning brush 602.

[0089] See also Figures 4 to 10, the present scheme also proposes an atmospheric particulate matter sampling sampling device, using a sampling cutter with the sampling mechanism 6 of the present scheme as described above. The present sampling device includes a sampling body 10, and a vacuum device is arranged inside the sampling body 10. The vacuum passage of the vacuum device is connected to the cutter body 11 of the sampling cutter for vacuum sampling. The present 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, and a protective shell 906 is arranged corresponding to each sampling cutter. The protective shell 906 is a cylindrical structure, which 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 inserted into 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 surrounding side rises, and the air extraction gas path between the sampling body 10 and the sampling cutter is closed. Another 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] On the basis of the above implementation scheme, the sampling body 10 includes four intermediate tubes 3, one set of intermediate tubes 3 is provided for each sampling cutter, and the intermediate tubes 3 are coaxial with the protective shell 906, and the upper end of the intermediate tubes 3 is connected to the mounting structure 12 of the sampling body 10. The sampling body 10 is provided with an air intake pipe 5, which is connected to the exhaust device inside the air intake pipe 5, and the external air is exhausted through the air intake pipe 5. A mounting shell 2 is provided above the sampling body 10, and the replacement mechanism 7 is provided in the mounting shell 2.

[0092] The replacement mechanism 7 includes a vertically arranged support tube 701, one end of which is connected to the suction tube 5, and the support tube 701 and the suction tube 5 are rotatably connected. A rotating frame 702 is arranged on the support tube 701, and 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 a bracket of the rotating frame 702, and the rotating frame 702 can drive the receiving tube 703 to rotate synchronously; the receiving tube 703 and the support tube 701 are connected through 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, and the lifting frame 706 supports the sealing plug 707 and the receiving tube 703 on the lower side.

[0093] When the lifting frame 706 rises, the receiving tube 703 and the sealing plug 707 rise, and the three sealing plugs 707 seal the three intermediate tubes 3 corresponding to the three sampling cutters above them, and the receiving tube 703 is connected to another intermediate tube 3 to perform air extraction. When the sampling cutter has completed sampling, the lifting frame 706 descends, the sealing plug 707 and the receiving tube 703 move down synchronously, and then the rotating frame 702 rotates 90°. The lifting frame 706 rises again to perform sampling for 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 arranged in the mounting housing 2, and a driving housing 708 is fixedly connected to the tube body of the support tube 701. A limit plate 714 and a lever 715 are fixedly arranged on one side of the motor shaft of the dual-axis motor 711, and the limit plate 714 is a circular disc. The driving housing 708 is a hemispherical structure, which is coaxial with the support tube 701. A guide groove 709 adapted to the lever 715 is provided on the driving housing 708. A positioning groove 710 is provided on the driving housing 708, and the limit plate 714 is slidably connected to the positioning groove 710. When the dual-axis motor 711 is running, the lever 715 can be periodically engaged with the guide groove 709, and the driving housing 708 is rotated with a period of 90° by the lever 715.

[0095] As the linkage structure of the lifting frame 706, the present solution is provided with a reciprocating screw 716, which is rotatably connected to the bottom of the mounting housing 2, and a driving block 704 is slidably matched on the reciprocating screw 716, which is fixedly connected to the lifting frame 706, and the reciprocating screw 716 is coaxially fixedly connected to the crown gear 713, and a driving gear 712 is fixedly connected to the other motor shaft of the double-axis motor 711, and the driving gear 712 is an incomplete gear mechanism, and the driving gear 712 is meshed with the crown gear 713. The driving block 704 is fixedly connected inside the lifting frame 706, and the driving block 704 and the reciprocating screw 716 are threadedly connected.

[0096] Under the action of the dual-axis motor 711, the lever 715 intermittently shifts the drive housing 708, so that the support tube 701 drives the receiving tube 703 and the sealing plug 707 to rotate through the rotating frame 702. When the receiving tube 703 rotates to the specified position, the driving gear 712 will gradually mesh with the crown gear 713, the reciprocating screw rod 716 will rotate, and the driving block 704 will then drive the lifting frame 706 to move upward, thereby sending 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 lever 715 still does not contact the guide groove 709, the driving gear 712 remains in meshing with the crown gear 713, and the reciprocating screw rod 716 continues to rotate, so that the lifting frame 706 can smoothly drive the receiving tube 703 and the sealing plug 707 to move downward, release the air extraction of the sampling cutter, and then repeat the aforementioned rotation action of the rotating frame 702 to switch to the next sampling cutter.

[0097] Based on the above implementation scheme, see Fig.10 , the bearing mechanism 9 also includes a pusher 903, which is a roller. One is provided at the lower side of each protective shell 906, and 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 a circular track as a whole. The pusher 903 is slidably connected to the push track 901 and moves in the push track 901. A lifting groove 902 is provided on the push track 901, and the junction of the lifting groove 902 and the push track 901 is an arc 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, and the sampling cover 1 inside the protective shell 906 is exposed, 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 set at the bottom of the protective shell 906. It is only necessary to meet the requirements that when the pushing member 903 is located in the pushing track 901, the first spring 905 deforms and accumulates 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 Fig.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 the lower end can be fixed to one side of the tube body of the intermediate tube 3 through a support plate.

[0099] On the basis of the above implementation, the receiving tube 703 can be directly inserted into the intermediate tube 3, but there may be leakage at the connection between the two. Therefore, in this solution, a leakage prevention mechanism 8 is provided between the intermediate tube 3, the receiving tube 703 and the sealing plug 707. The leakage prevention mechanism 8 seals the connection between the intermediate tube 3 and the replacement mechanism 7, that is, the peripheral wall of the intermediate tube 3, the receiving tube 703 and the sealing plug 707.

[0100] The anti-leakage mechanism 8 includes a sealing airbag 801, which is an annular airbag, which is sleeved on the end of the intermediate tube 3 near the receiving tube 703, and the receiving tube 703 can be inserted into the middle of the sealing airbag 801. When the sealing airbag 801 is inflated, its outer side abuts against the inner wall of the intermediate tube 3, and its inner side abuts against the outer wall of the receiving tube 703, thereby achieving sealing.

[0101] On the basis of the above implementation, the sealed airbag 801 is respectively connected to the air inlet pipe 802 and the exhaust pipe 803. The air inlet pipe 802 only needs to be able to take in air by means of the air path inside the device. One-way valve structures are respectively provided on 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 supply end of the air intake pipe 802 of the sealed airbag 801 after exhausting air. When the pressure inside the sealed airbag 801 is too high, the exhaust pipe 803 will exhaust and release the pressure.

[0103] On the basis of the above implementation scheme, this scheme provides a one-way valve structure, which includes a transfer tube 804 embedded in the air inlet pipe 802 and the exhaust pipe 803, a gas blocking plate 806 is slidably connected in the transfer tube 804, and a second spring 805 is fixedly connected between the transfer tube 804 and the gas blocking plate 806. When the sampling body 10 is running, a part of the air will enter the air inlet pipe 802, push open the corresponding gas blocking plate 806, and enter the sealing airbag 801, so that the sealing airbag 801 is always in a full state, effectively ensuring air tightness; at the same time, due to the setting of the exhaust pipe 803, the excess gas will push open the corresponding gas 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 orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0105] In the present application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0106] In the present application and its embodiments, unless otherwise clearly 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 not being in direct contact but being in contact 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 to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of 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 falling within the scope of the present application.

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

Claims

1. An atmospheric particulate matter sampling and cutting device, characterized in that: include A cutter body, used 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 arranged 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; The inner cleaning component is arranged inside the sampling cover and can clean the cover wall inside the sampling cover.

2. The atmospheric particulate matter sampling and cutting device according to claim 1, characterized in that: The external cleaning component comprises a cleaning brush with a long 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 component comprises a cleaning tube arranged inside the sampling hood, wherein the axis of the cleaning tube is parallel to the axis of the sampling hood; a plurality of air outlets are distributed on the tube body of the cleaning tube, and the air outlets are opened toward the wall of the sampling hood.

3. The atmospheric particulate matter sampling and cutting device according to claim 2, characterized in that: At least one pair of cleaning brushes are arranged on the outside of the sampling cover in a symmetrical structure; At least one pair of cleaning tubes are arranged in a symmetrical structure inside the sampling cover; Also includes: 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.

4. The atmospheric particulate matter sampling and cutting device according to claim 3, characterized in that: The internal 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.

5. The atmospheric particulate matter sampling and cutting device according to claim 4, characterized in that: The cleaning drive assembly comprises: A fan, an air outlet end of which forms an air flow passage with the air outlet nozzle of the cleaning pipe; A transmission member can rotate under the blowing 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 rotationally 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.

6. The atmospheric particulate matter sampling and cutting device according to claim 5, characterized in that: The cleaning drive assembly also includes: An air injection cylinder, wherein the tube body of the driving tube extends into the air injection cylinder, and a portion of the driving tube in the air injection cylinder is provided with an air inlet; A first air delivery 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, and one end of the first air delivery 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 tube, and an air outlet end extending into the air injection tube.

7. An atmospheric particulate matter sampling device, characterized in that: include: A sampling body, wherein an air extraction device is provided inside, and an 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; A carrying mechanism, comprising a protective shell for placing the sampling cutter, the protective shell being capable of isolating the peripheral side 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; 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, and when the gas path of 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.

8. The sampling device according to claim 7, characterized in that The sampling subject comprises: An intermediate tube, one set is provided corresponding to each of the sampling cutters; A suction pipe to extract the outside air; The replacement mechanism comprises: The support pipe is a vertical pipe body, one end of which is connected to the air intake pipe, and the support pipe and the air intake pipe are rotatably connected; A rotating frame, fixedly connected to the support tube; 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; A lifting frame, linked with the receiving tube, can drive the receiving tube to move toward or away from the intermediate tube; When the receiving pipe is close to the middle pipe, the middle pipe is communicated with the supporting pipe through the receiving pipe.

9. The sampling device according to claim 8, characterized in that The replacement mechanism also includes: 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 with the sealing plug, and can drive the sealing plug to move toward or away from its corresponding intermediate tube.

10. The sampling device according to claim 9, characterized in that The carrying mechanism also includes: A pusher, at least one of which is disposed on the lower side of each of the protective shells, and the pusher is connected to the protective shell; The pushing track is linked with the rotating frame, and the pushing track can rotate synchronously with the rotating frame; a lifting groove is provided on the pushing track, the lifting groove is an arc groove, and the junction between the lifting groove and the pushing track is an arc transition structure; the pushing member is slidably connected with the pushing track.

Images