A device for collecting atmospheric particles

Abstract

The present invention discloses an atmospheric particle collection device in the technical field of atmospheric particle collection, comprising a pressure regulating tube and a sliding sleeve slidably connected to the inner wall of the pressure regulating tube, at least four exhaust sleeves are connected and installed on the inner wall of the sliding sleeve, a plurality of lateral holes are respectively opened on both sides of each exhaust sleeve, a plurality of lateral holes are respectively connected to the two sides of the exhaust sleeve, a top rod is slidably connected in each exhaust sleeve, and the atmospheric particle collection device can collect and detect particles under different wind pressure conditions through the design of a pressure regulating mechanism, and the sliding sleeve and the exhaust sleeve inside the device can close or open different numbers of lateral holes through the movement of the top rod, thereby changing the resistance of the exhaust air, and this design enables the device to adapt to a variety of wind pressure conditions, thereby improving the flexibility and accuracy of detection.

Description

Technical Field

[0001] The present invention relates to the technical field of atmospheric particle collection, and more specifically, to an atmospheric particle collection device. Background Art

[0002] During use, existing atmospheric particle collection devices mainly rely on fans to blow air through the collection layer, and the particles in the air are captured and detected through the collection layer. This design can effectively collect and analyze the particles in the air to a certain extent, and provides important data support for environmental monitoring and scientific research. However, existing collection devices have limitations, that is, they can only be detected under a single wind pressure condition, which means that in actual applications, the collection device cannot adapt to the changes in wind pressure in different environments, thereby limiting its scope of application and detection accuracy. For example, in different environments such as cities and rural areas, indoors and outdoors, the wind pressure conditions may be different, and the existing collection devices cannot perform effective detection under these different conditions, which undoubtedly affects its convenience and reliability of use. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the present invention provides an atmospheric particulate matter collection device to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an atmospheric particulate matter collection device, comprising an intermediate tube;

[0007] A pressure regulating mechanism, comprising a pressure regulating tube and a sliding sleeve slidably connected to the inner wall of the pressure regulating tube, wherein at least four exhaust sleeves are connected and mounted on the inner wall of the sliding sleeve, wherein a plurality of lateral holes are respectively opened on both sides of each exhaust sleeve, wherein the plurality of lateral holes are respectively connected to the two sides of the exhaust sleeve, wherein a top rod is respectively slidably connected in each exhaust sleeve, wherein a wind shield sleeve is connected on one side of the plurality of exhaust sleeves close to the axis, wherein the lower end of the wind shield sleeve is connected to the lower end of the sliding sleeve, wherein a fitting ring is slidably provided in the pressure regulating tube, wherein a collection layer is mounted on the inner wall of the fitting ring; and

[0008] The fixing mechanism comprises an adjusting sleeve and a jacket slidably connected to the middle position of the adjusting sleeve, an external groove is opened on the outer wall of the pressure regulating tube, the adjusting sleeve is slidably connected in the external groove, reducing blocks are equidistantly installed on the inner wall of the jacket, an adjusting frame is respectively installed on each of the top rods, and a transverse rod is installed in the adjusting frame and is in contact with the side wall of the reducing block.

[0009] Preferably, the pressure regulating mechanism also includes a spring, and the plurality of adjusting frames are respectively slidably connected to the side walls of the adjusting sleeve, and two springs are respectively installed on the outer wall of each adjusting frame, and the two springs are respectively in contact with the inner wall of the adjusting sleeve. This design makes the adjusting frame more secure when in a fixed position through the elastic force of the spring, thereby improving the overall stability and adjustment accuracy of the device.

[0010] Preferably, the top rod slides in the exhaust sleeve, and when the top rod moves to different positions, different numbers of lateral holes are closed, thereby changing the resistance to air outlet. The sliding design of the top rod allows the user to flexibly adjust the number of lateral holes opened according to actual needs, thereby controlling the air outlet resistance and adapting to the needs of particle collection under different wind pressure conditions. This adjustable air outlet resistance design not only improves the adaptability of the device, but also ensures the accuracy and reliability of the collected data.

[0011] Preferably, the pressure regulating mechanism also includes a sealing ring pressed on the fitting ring, and a rubber sleeve and a sealing spring are installed between the sealing ring and the wind shield sleeve, and the sealing spring is located on the outside of the rubber sleeve. This multiple sealing design effectively prevents air leakage and ensures the airtightness inside the pressure regulating tube. The combination of the rubber sleeve and the sealing spring further enhances the sealing effect and maintains good sealing performance, thereby ensuring the accuracy of the collected data and the reliability of the device.

[0012] Preferably, a plurality of internal bars are equidistantly installed on the outer wall of the sliding sleeve, a plurality of internal grooves are equidistantly opened on the inner wall of the pressure regulating tube, and the internal bars are slidably connected in the internal grooves. This sliding connection design of the internal bars and the internal grooves ensures the smooth movement of the sliding sleeve in the pressure regulating tube, while the equidistantly distributed internal bars and internal grooves also improve the structural stability of the device.

[0013] Preferably, the fixing mechanism also includes a plurality of vertical grooves equidistantly provided along the side wall of the pressure-regulating tube, the adjusting frame is slidably connected in the vertical grooves, a follower sleeve is slidably provided on the outer wall of the pressure-regulating tube, the follower sleeve is pressed on the upper end surface of the adjusting sleeve, and a spiral sleeve is threadedly provided on the pressure-regulating tube, and the spiral sleeve abuts against the follower sleeve. This design ensures the stable sliding of the adjusting frame in the vertical direction through the cooperation of the vertical grooves and the follower sleeve, and the threaded connection of the spiral sleeve makes the movement of the follower sleeve more controllable, thereby improving the adjustment accuracy and fixing effect, and ensuring the stable operation of the device under different wind pressure conditions.

[0014] Preferably, a plurality of insertion holes are equidistantly provided on the outer wall of the adjusting sleeve, and a positioning rod is slidably connected to each of the insertion holes, and the diameter of the positioning rod is slightly larger than the distance to the inner wall of the jacket. This design enables the positioning rod to fit tightly in the insertion hole and to be fixed in place through slight deformation, thereby ensuring the stable position of the adjusting sleeve in the pressure regulating pipe, avoiding adjustment failure due to looseness, and improving the overall stability of the device and the convenience of operation.

[0015] Preferably, a return spring is sleeved on each of the positioning rods, one end of the return spring is connected to the positioning rod, and the other end of the return spring is connected to the adjustment sleeve.

[0016] Preferably, a push spring is provided on the outer wall of the pressure-regulating tube, and a socket sleeve is provided on the push spring. The socket sleeve is slidably connected to the outer wall of the pressure-regulating tube, and the socket sleeve is in contact with the lower end surface of the adjusting sleeve. The combined design of the push spring and the socket sleeve ensures the stable position of the adjusting sleeve in the pressure-regulating tube. The elastic force of the push spring makes the socket sleeve always close to the lower end surface of the adjusting sleeve, thereby avoiding displacement of the adjusting sleeve caused by vibration and improving the stability of the device.

[0017] Preferably, a plurality of branch pipes are connected on the outer wall of the intermediate pipe, each of the branch pipes is respectively connected to the pressure regulating pipe, a partition is provided between every two branch pipes, the partition is installed on the intermediate pipe, and internal pipes are installed in the plurality of partitions, the intermediate pipe is installed on external equipment, and a fan is installed in one end of the intermediate pipe, and an intermediate sleeve is installed with internal threads at the other end of the intermediate pipe, and a collecting sleeve is installed in the intermediate sleeve. This design achieves uniform distribution and effective guidance of air through the cooperation of multiple branch pipes and partitions, ensuring sufficient collection of particulate matter, the installation of the fan provides stable wind pressure, and the combined design of the intermediate sleeve and the collecting sleeve further improves the collection efficiency of particulate matter, so that the device can operate efficiently under different environments and conditions.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides an atmospheric particulate matter collection device, which has the following beneficial effects:

[0020] The atmospheric particle collection device can collect and detect particles under different wind pressure conditions through the design of the pressure regulating mechanism. The sliding sleeve and the exhaust sleeve inside the device can close or open different numbers of lateral holes through the movement of the top rod, thereby changing the resistance of the air outlet. This design enables the device to adapt to a variety of wind pressure conditions, improving the flexibility and accuracy of detection. In practical applications, the changes in wind pressure under different environments and conditions have a significant impact on the distribution and behavior of particles. Therefore, the adaptability to multiple wind pressures can provide more comprehensive and reliable data. Through the combined design of the intermediate tube and the pressure regulating tube, the air can be efficiently guided to the collection layer for particle collection. The fan in the intermediate tube generates wind pressure, blows the air into the intermediate tube, and then distributes the air to each branch tube through the internal tube and the partition, and finally flows into the pressure regulating tube. After passing through the collection layer, the air flows into the wind shield sleeve and is discharged through the lateral holes on the exhaust sleeve. This design ensures the uniform distribution of air during the collection process, improves the collection efficiency and detection accuracy. The pressure regulating mechanism realizes flexible adjustment of wind pressure through the cooperation of the sliding sleeve, the exhaust sleeve and the top rod. By rotating the jacket, it can bring The movable reducer and the transverse rod are moved to adjust the position of the top rod and change the number of lateral holes opened. This adjustment method is not only easy to operate, but also can accurately control the wind pressure to meet different detection requirements. In addition, the device also ensures the fixing effect after adjustment through the design of the positioning rod and the return spring, avoiding the adjustment failure caused by the change of wind pressure during use. The installation and removal process of the collection layer is very convenient. Through the threaded connection of the fitting ring and the sealing ring, the collection layer can be easily fixed in the pressure regulating tube. When the collection layer needs to be replaced or tested, it is only necessary to rotate the jacket in the opposite direction and use the elastic force of the spring to pull the adjustment frame outward to untie the connection between the top rod and the exhaust sleeve, so as to facilitate the removal of the wind shield sleeve and the collection layer. This design not only improves the convenience of operation, but also extends the service life of the device. The device ensures the sealing inside the pressure regulating tube through the combined design of the sealing ring, rubber sleeve and sealing spring. The rubber sleeve and sealing spring between the sealing ring and the wind shield sleeve can effectively prevent air leakage, ensuring the accuracy and reliability of the test results. In addition, the close fit between the various components of the device also further improves the overall stability and durability.

[0021] The atmospheric particle collection device significantly improves the accuracy and convenience of atmospheric particle detection through multiple wind pressure adaptability, efficient collection and detection, flexible adjustment and fixation, convenient installation and disassembly, high sealing and reliability, etc. This device is not only suitable for various environments and application scenarios, but also provides strong technical support for air pollution control and environmental monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an atmospheric particulate matter collection device in the present invention;

[0023] Figure 2 For the present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0024] Figure 3 It is a structural schematic diagram of the voltage regulating tube in the present invention;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of the voltage regulating tube in the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the pressure regulating tube and the regulating sleeve in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the jacket and the top rod in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the jacket in the present invention;

[0029] Figure 8 It is a schematic cross-sectional structural diagram of the pressure regulating tube and the wind shield sleeve in the present invention;

[0030] Fig. 9 It is a schematic cross-sectional structural diagram of the wind shield sleeve in the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the voltage regulating tube and the transverse rod in the present invention.

[0032] In the figure: 1. middle pipe; 2. pressure regulating pipe; 3. sliding sleeve; 4. exhaust sleeve; 5. lateral hole; 6. top rod; 7. wind shield sleeve; 8. fitting ring; 9. collection layer; 10. adjusting sleeve; 11. clamping jacket; 12. external groove; 13. reducing block; 14. adjusting frame; 15. transverse rod; 16. spring; 17. sealing ring; 18. rubber sleeve; 19. sealing spring; 20. internal strip; 21. internal groove; 22. vertical groove; 23. follower sleeve; 24. spiral sleeve; 25. insertion hole; 26. positioning rod; 27. return spring; 28. push spring; 29. ​​receiving sleeve; 30. branch pipe; 31. partition; 32. internal pipe; 33. fan; 34. middle sleeve; 35. collection sleeve. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0035] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0036] See also Figures 1 to 10 , an atmospheric particulate matter collection device, characterized in that: it includes an intermediate tube 1, a pressure regulating mechanism, including a pressure regulating tube 2 and a sliding sleeve 3 slidably connected to the inner wall of the pressure regulating tube 2, at least four exhaust sleeves 4 are installed and connected on the inner wall of the sliding sleeve 3, and a plurality of lateral holes 5 are respectively opened on both sides of each exhaust sleeve 4, and the plurality of lateral holes 5 are respectively connected to the two sides of the exhaust sleeve 4, and each exhaust sleeve 4 is slidably connected to a top rod 6, and a plurality of exhaust sleeves 4 are connected to a wind shield sleeve 7 on one side close to the axis, and the lower end of the wind shield sleeve 7 is connected to the lower end of the sliding sleeve 3, a fitting ring 8 is slidably provided in the pressure regulating tube 2, and a collection layer 9 is installed on the inner wall of the fitting ring 8, the pressure regulating mechanism also includes a spring 16, and a plurality of adjustment frames 14 are respectively slidably connected to Connected to the side wall of the adjusting sleeve 10, two springs 16 are respectively installed on the outer wall of each adjusting frame 14, and the two springs 16 respectively abut against the inner wall of the adjusting sleeve 10. The top rod 6 slides in the exhaust sleeve 4. When the top rod 6 moves to different positions, it will close different numbers of lateral holes 5, thereby changing the resistance of the exhaust gas. The pressure regulating mechanism also includes a sealing ring 17 pressed on the fitting ring 8, and a rubber sleeve 18 and a sealing spring 19 are installed between the sealing ring 17 and the wind shield sleeve 7. The sealing spring 19 is on the outside of the rubber sleeve 18. A plurality of internal strips 20 are equidistantly installed on the outer wall of the sliding sleeve 3, and a plurality of internal grooves 21 are equidistantly opened on the inner wall of the pressure regulating tube 2, and the internal strips 20 are slidably connected in the internal grooves 21.

[0037] When using the middle tube 1 to collect atmospheric particulate matter, it is necessary to adjust different air inlet pressures to adapt to different collection conditions. First, the middle tube 1 is installed at the position where collection is required, and the fan 33 is started. The wind pressure generated by the fan 33 is blown into the middle tube 1. Since the middle tube 1 is divided into two parts, one part of the air is blown into the collection sleeve 35 through the internal tube 32, and then the atmospheric particles are collected through the collection sleeve 35. The other part of the air flows into each branch tube 30 through the internal tube 32 and multiple partitions 31, and flows into the pressure regulating tube 2 through the branch tube 30. The air flows into the wind shield sleeve 7 through the collection layer 9, and then flows into the sliding sleeve 3 and the wind shield sleeve 7 through the lateral holes 5 on the multiple exhaust sleeves 4, and finally can be discharged. By changing the position of the top rod 6, the number of lateral holes 5 opened can be changed, thereby changing the discharged wind pressure. When the wind resistance at the rear end becomes larger, the pressure through the front collection layer 9 will become larger, so the conditions under different pressures can be collected, thereby meeting the detection requirements.

[0038] When installing and removing the collection layer 9 in different pressure regulating tubes 2, firstly, the fitting ring 8 is threadedly connected to the sealing ring 17, and then the sliding sleeve 3 is slidably connected to the inner wall of the pressure regulating tube 2, so that the fitting ring 8 is pressed on the lower end surface of the pressure regulating tube 2, and then the clamping sleeve 11 is rotated to make the reducing block 13 press on the transverse rod 15, and then the top rod 6 is inserted into the exhaust sleeve 4, and multiple adjustment frames 14 are respectively slidably connected to the adjustment sleeve 10, and then the spiral sleeve 24 is rotated to drive the follower sleeve 23 to move downward, and the follower sleeve 23 is pressed on the adjustment sleeve 10, and the vertical groove The length of 22 is greater than that of the transverse rod 15, so it will drive the adjustment sleeve 10 and multiple adjustment frames 14 to move downward. Since the fitting ring 8 is pressed on the lower end surface of the pressure regulating tube 2, it will exert pressure on the sealing spring 19, thereby ensuring the sealing effect. When the collection layer 9 needs to be taken out, the jacket 11 is rotated in the opposite direction, and the adjustment frame 14 will be pulled outward under the action of the spring 16, thereby releasing the connection between the top rod 6 and the exhaust sleeve 4, and then the wind shield sleeve 7 is taken out. At this time, the collection layer 9 can be tested to meet the detection of different pressures.

[0039] See also Figures 1 to 10, a fixing mechanism includes an adjusting sleeve 10 and a jacket 11 slidably connected to the middle position of the adjusting sleeve 10, an external groove 12 is provided on the outer wall of the pressure regulating tube 2, the adjusting sleeve 10 is slidably connected in the external groove 12, and a reducing block 13 is equidistantly installed on the inner wall of the jacket 11, an adjusting frame 14 is respectively installed on each top rod 6, and a transverse rod 15 that fits the side wall of the reducing block 13 is installed in the adjusting frame 14, the fixing mechanism also includes a plurality of vertical grooves 22 equidistantly provided along the side wall of the pressure regulating tube 2, the adjusting frame 14 is slidably connected in the vertical groove 22, a follower sleeve 23 is slidably provided on the outer wall of the pressure regulating tube 2, the follower sleeve 23 is pressed on the upper end surface of the adjusting sleeve 10, a spiral sleeve 24 is threaded on the pressure regulating tube 2, the spiral sleeve 24 abuts on the follower sleeve 23, a plurality of insertion holes 25 are equidistantly provided on the outer wall of the adjusting sleeve 10, and each insertion hole 25 is slidably connected to a positioning rod 26, and the positioning rod The diameter of 26 is slightly larger than the distance of the inner wall of the jacket 11, and each positioning rod 26 is respectively sleeved with a return spring 27, one end of the return spring 27 is connected to the positioning rod 26, and the other end of the return spring 27 is connected to the adjusting sleeve 10. A push spring 28 is provided on the outer wall of the pressure regulating pipe 2, and a receiving sleeve 29 is provided on the push spring 28. The receiving sleeve 29 is slidably connected to the outer wall of the pressure regulating pipe 2, and the receiving sleeve 29 abuts against the lower end surface of the adjusting sleeve 10. A plurality of branch pipes 30 are connected on the outer wall of the intermediate pipe 1, and each branch pipe 30 is respectively connected to the pressure regulating pipe 2, and a partition plate 31 is provided between every two branch pipes 30, and the partition plate 31 is installed on the intermediate pipe 1, and internal pipes 32 are installed in the plurality of partition plates 31. The intermediate pipe 1 is installed on the external equipment, and a fan 33 is installed in one end of the intermediate pipe 1, and an intermediate sleeve 34 is internally threadedly installed at the other end of the intermediate pipe 1, and a collecting sleeve 35 is installed in the intermediate sleeve 34.

[0040] When the wind shield sleeve 7 is fixed and the air outlet pressure needs to be adjusted, the jacket 11 is rotated so that the reducer 13 drives the movement of the transverse rod 15, so that the adjustment frame 14 and the top rod 6 move inward synchronously. When the top rod 6 is in different positions, different lateral holes 5 are in a closed state. The air outlet pressure can be changed by changing the number of lateral holes 5. When the adjustment is completed, the positioning rod 26 is pressed. Since the diameter of the positioning rod 26 is slightly larger than the distance to the inner wall of the jacket 11, it will cause the clamping to deform slightly and make it stuck in the adjustment sleeve 10, thereby ensuring the adjustment fixation. The collection layer 9 can be fixed by the adjustment frame 14, and the position of the top rod 6 can be changed to adjust the air outlet pressure. The adjustment frame 14 can achieve a dual role, ensuring the convenience of use, thereby completing the use process.

[0041] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An atmospheric particulate matter collection device, characterized in that: comprising an intermediate tube (1); A pressure regulating mechanism, comprising a pressure regulating tube (2) and a sliding sleeve (3) slidably connected to the inner wall of the pressure regulating tube (2), at least four exhaust sleeves (4) being connected and mounted on the inner wall of the sliding sleeve (3), a plurality of lateral holes (5) being respectively opened on both sides of each exhaust sleeve (4), the plurality of lateral holes (5) being respectively connected to both sides of the exhaust sleeve (4), a top rod (6) being respectively slidably connected in each exhaust sleeve (4), a wind shielding sleeve (7) being connected on one side of the plurality of exhaust sleeves (4) close to the axis, the lower end of the wind shielding sleeve (7) being connected to the lower end of the sliding sleeve (3), a fitting ring (8) being slidably arranged in the pressure regulating tube (2), a collection layer (9) being mounted on the inner wall of the fitting ring (8); and The fixing mechanism comprises an adjusting sleeve (10) and a jacket (11) slidably connected to the middle position of the adjusting sleeve (10); an external groove (12) is provided on the outer wall of the pressure regulating pipe (2); the adjusting sleeve (10) is slidably connected in the external groove (12); reducing blocks (13) are equidistantly installed on the inner wall of the jacket (11); an adjusting frame (14) is respectively installed on each of the top rods (6); and a transverse rod (15) is installed in the adjusting frame (14) and is in contact with the side wall of the reducing block (13).

2. The atmospheric particulate matter collecting device according to claim 1, characterized in that: The pressure regulating mechanism further comprises a spring (16); the plurality of regulating frames (14) are respectively slidably connected to the side walls of the regulating sleeve (10); two springs (16) are respectively mounted on the outer wall of each regulating frame (14); the two springs (16) respectively abut against the inner wall of the regulating sleeve (10).

3. The atmospheric particulate matter collecting device according to claim 1, characterized in that: The top rod (6) slides in the exhaust sleeve (4), and when the top rod (6) moves to different positions, different numbers of lateral holes (5) are closed, thereby changing the resistance of air outlet.

4. The atmospheric particulate matter collecting device according to claim 1, characterized in that: The pressure regulating mechanism further comprises a sealing ring (17) pressed on the fitting ring (8), a rubber sleeve (18) and a sealing spring (19) being installed between the sealing ring (17) and the wind shield sleeve (7), and the sealing spring (19) being located outside the rubber sleeve (18).

5. The atmospheric particulate matter collecting device according to claim 4 is characterized in that: A plurality of internal strips (20) are equidistantly mounted on the outer wall of the sliding sleeve (3), a plurality of internal grooves (21) are equidistantly opened on the inner wall of the pressure regulating tube (2), and the internal strips (20) are slidably connected in the internal grooves (21).

6. The atmospheric particulate matter collecting device according to claim 5, characterized in that: The fixing mechanism further comprises a plurality of vertical grooves (22) equidistantly provided along the side wall of the pressure regulating tube (2), the regulating frame (14) being slidably connected in the vertical grooves (22), a follower sleeve (23) being slidably provided on the outer wall of the pressure regulating tube (2), the follower sleeve (23) being pressed against the upper end surface of the regulating sleeve (10), and a spiral sleeve (24) being threadedly provided on the pressure regulating tube (2), the spiral sleeve (24) being in contact with the follower sleeve (23).

7. The atmospheric particulate matter collecting device according to claim 6, characterized in that: A plurality of insertion holes (25) are equidistantly formed on the outer wall of the adjustment sleeve (10), and a positioning rod (26) is slidably connected to each of the insertion holes (25). The diameter of the positioning rod (26) is slightly larger than the distance to the inner wall of the jacket (11).

8. The atmospheric particulate matter collecting device according to claim 7, characterized in that: A return spring (27) is sleeved on each positioning rod (26), one end of the return spring (27) is connected to the positioning rod (26), and the other end of the return spring (27) is connected to the adjustment sleeve (10).

9. The atmospheric particulate matter collecting device according to claim 8, characterized in that: A push spring (28) is provided on the outer wall of the pressure regulating tube (2), and a receiving sleeve (29) is provided on the push spring (28). The receiving sleeve (29) is slidably connected to the outer wall of the pressure regulating tube (2), and the receiving sleeve (29) abuts against the lower end surface of the regulating sleeve (10).

10. The atmospheric particulate matter collecting device according to claim 1, characterized in that: A plurality of branch pipes (30) are connected to the outer wall of the intermediate pipe (1), each of the branch pipes (30) is connected to the pressure regulating pipe (2), a partition (31) is provided between every two of the branch pipes (30), the partition (31) is mounted on the intermediate pipe (1), and internal pipes (32) are installed in the plurality of partitions (31), the intermediate pipe (1) is mounted on external equipment, a fan (33) is installed in one end of the intermediate pipe (1), an intermediate sleeve (34) is internally threadedly installed in the other end of the intermediate pipe (1), and a collecting sleeve (35) is installed in the intermediate sleeve (34).

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