A comprehensive ambient air sampler for detecting particulate matter

Abstract

The present invention relates to the technical field of air samplers, and specifically to an environmental air comprehensive sampler for detecting particulate matter, comprising an air suction mechanism, a gathering mechanism, a moving mechanism, a collecting mechanism, and a sealing mechanism. The upper end of the air suction mechanism is provided with a gathering mechanism, one end of the gathering mechanism is provided with a moving mechanism, one end of the moving mechanism is provided with a collecting mechanism, and one end of the collecting mechanism is provided with a sealing mechanism. Through the structure provided, external air enters the interior of a first sleeve through an air inlet. Under the action of suction, the cloth opening is in an inwardly curved arc shape, so that the collected particles can be gathered at the cloth opening. When the collecting bucket is in contact with the opening, the particles in the cloth opening can be transferred to the collecting bucket. When the collecting bucket is away from the opening, it will be in contact with a second baffle and a second sleeve for sealing. When the collecting bucket is in contact with the opening, the motor is started by using the structure provided to drive the fan blades to reverse and generate wind to transfer the particles collected at the cloth opening to the interior of the collecting bucket.

Description

Technical Field

[0001] The invention relates to the technical field of air samplers, in particular to an environmental air comprehensive sampler for detecting particulate matter. Background Art

[0002] The application of comprehensive ambient air samplers is very extensive. It can not only improve the supervision and protection of the atmospheric environment, but also provide important data support for air quality management, weather forecasting, health risk assessment, scientific research and other fields. Comprehensive ambient air samplers collect atmospheric particulate matter samples from different regions and seasons, analyze the chemical composition and particle size distribution of particulate matter, explore atmospheric environmental changes and their impact on ecosystems and health, and provide a basis for atmospheric environmental research. Atmospheric particulate matter has a great impact on human health. Through methods such as particle size distribution and component analysis, the health risks of atmospheric particulate matter can be evaluated, providing a scientific basis for health risk warning and control.

[0003] However, the existing comprehensive environmental air sampler for detecting particulate matter needs to be exposed to the external environment when in use. Its location may be affected by the surrounding environment, resulting in inaccurate sampling structure. If the exposure time is too long, it will also affect the results. The collected samples are not representative enough, and some particulate matter will remain in the sampler itself, affecting subsequent detection. Therefore, the present invention designs an comprehensive environmental air sampler for detecting particulate matter to solve the above problems. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides an environmental air comprehensive sampler for detecting particulate matter.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an environmental air comprehensive sampler for detecting particulate matter, comprising an air suction mechanism, a gathering mechanism, a moving mechanism, a collecting mechanism, and a sealing mechanism, wherein the upper end of the air suction mechanism is provided with a gathering mechanism, one end of the gathering mechanism is provided with a moving mechanism, one end of the moving mechanism is provided with a collecting mechanism, and one end of the collecting mechanism is provided with a sealing mechanism;

[0006] Preferably, the suction mechanism includes a base, a motor is fixedly connected to the lower end of the base, a first rotating shaft is fixedly connected to the lower end of the motor, a first spur gear is fixedly connected to the side wall of the first rotating shaft, a second spur gear is meshed with one end of the first spur gear, and a second rotating shaft is fixedly connected to the center of the second spur gear.

[0007] Preferably, the air suction mechanism also includes a support block, the side wall of the second rotating shaft is rotatably connected to the support block, the upper end of the support block is fixedly connected to the base, the side wall of the second rotating shaft is fixedly connected to a bearing, the lower end of the bearing is fixedly connected to the support block, one end of the second rotating shaft is fixedly connected to a fan blade, the outer side of the fan blade is provided with a circular ring, the upper end of the circular ring is fixedly connected to the base, the upper end of the base is fixedly connected to a support plate, and the side wall of the support plate is rotatably connected to a first round rod.

[0008] Preferably, the gathering mechanism comprises a cylinder, the lower end of the cylinder is fixedly connected to the base, and a round tube is fixedly connected inside the cylinder.

[0009] Preferably, the gathering mechanism further comprises a first sleeve, one end of the circular tube is fixedly connected to the first sleeve, a side wall of the first sleeve is provided with an opening, and a cloth opening is fixedly connected to the side wall of the opening.

[0010] Preferably, the moving mechanism includes a hydraulic cylinder, the lower end of the hydraulic cylinder is fixedly connected to the base, the upper end of the hydraulic cylinder is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a first disk, the upper end of the first disk is attached to a second disk, a first guide groove is provided inside the second disk, a rotating pin is slidably connected inside the first guide groove, the upper end of the second disk is fixedly connected to a sleeve, a second round rod is rotatably connected inside the sleeve, the lower end of the second round rod is fixedly connected to the first disk, and the lower end of the first disk is fixedly connected to a first baffle.

[0011] Preferably, the moving mechanism also includes an air inlet, the air inlet is slidably connected inside the first baffle, the upper end of the air inlet is fixedly connected to the rotating pin, the second guide groove includes a first straight groove (a), a first inclined groove (b), a second straight groove (c), and a second inclined groove (d), the lower end of the first straight groove (a) is connected to the first inclined groove (b), the lower end of the first inclined groove (b) is connected to the second straight groove (c), and the lower end of the second straight groove (c) is connected to the second inclined groove (d).

[0012] Preferably, the collecting mechanism comprises a connecting block, the upper end of the connecting block is fixedly connected to the lower end of the air inlet, a hollow groove is provided inside the connecting block, and a T-shaped block is slidably connected inside the hollow groove.

[0013] Preferably, the collecting mechanism further comprises a collecting bucket, the lower end of the T-shaped block is fixedly connected with the collecting bucket, the inner side wall of the collecting bucket is fixedly connected with a filter screen, and one end of the collecting bucket is tightly fitted with a second sleeve.

[0014] Preferably, the sealing mechanism includes a second baffle, the inner side wall of the second baffle is tightly fitted with the side wall of the collecting bucket, the side wall of the second baffle is fixedly connected to a sliding rod, the side wall of the sliding rod is slidably connected to a third sleeve, and one end of the sliding rod is fixedly connected to the third baffle.

[0015] Preferably, the sealing mechanism further comprises a spring, one end of the third baffle is fixedly connected to the spring, one end of the spring is fixedly connected to the third sleeve, and one end of the third sleeve is fixedly connected to a fixing block.

[0016] Beneficial effects of the present invention:

[0017] (1) The environmental air comprehensive sampler for detecting particulate matter described in the present invention uses a fan blade to rotate to generate suction, which will produce low pressure in the circular ring. At this time, the external air will enter the interior of the circular tube from the air inlet, and the air inside the circular tube will escape from the bottom of the circular tube through the circular tube. The external air will enter the interior of the first sleeve through the air inlet through the set structure and pass through the cloth port. Under the action of suction, the cloth port is bent inward in an arc shape, so that the collected air particles can be gathered at the cloth port.

[0018] (2) The environmental air comprehensive sampler for detecting particulate matter described in the present invention can adjust the closeness and distance between the collection bucket and the opening through the set structure. When the collection bucket is close to the opening, the particles inside the cloth opening can be transferred to the collection bucket. When the collection bucket is away from the opening, it will be sealed with the second baffle and the second sleeve. When the collection bucket is close to the opening, the set structure is used to start the motor to drive the fan blades to reverse. The reverse rotation of the fan blades will generate air, which will transfer the particles collected at the cloth opening to the inside of the collection bucket, and the air will be discharged from the filter. In addition, by setting six collection buckets and openings, five groups of different particles can be taken for detection, so that the detection result can be more accurate.

[0019] (3) The comprehensive environmental air sampler for detecting particulate matter described in the present invention can seal the collection bucket after collecting particles between the second baffle plate and the second sleeve through the set structure, so that the collected particles can be sealed to avoid long-term contact with the outside world and contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0022] Figure 2 is a schematic diagram of the base structure;

[0023] Figure 3 It is a schematic diagram of the connection structure between the support plate and the first round rod;

[0024] Figure 4 It is a schematic diagram of the connection structure between the motor and the first rotating shaft;

[0025] Figure 5 It is a schematic diagram of the connection structure between the cylinder and the circular tube;

[0026] Figure 6 It is a schematic diagram of the fabric opening structure;

[0027] Figure 7 is a schematic diagram of the casing structure;

[0028] Figure 8 is a schematic diagram of the air intake structure;

[0029] Fig. 9 is a schematic diagram of the connection structure between the first disc and the second disc;

[0030] Fig.10 It is a schematic diagram of the connection structure between the connection block and the collection bucket;

[0031] Fig.11 is a schematic diagram of the structure of the second sleeve;

[0032] Fig.12 It is a schematic diagram of the hollow tank structure;

[0033] Fig.13 It is a schematic diagram of the connection structure between the third baffle and the spring.

[0034] In the figure: 1. suction mechanism; 11. base; 12. motor; 13. first rotating shaft; 14. first spur gear; 15. second spur gear; 16. second rotating shaft; 17. support block; 18. bearing; 19. fan blade; 110. ring; 111. support plate; 112. first round rod; 2. gathering mechanism; 21. cylinder; 22. round tube; 23. first sleeve; 24. opening; 25. cloth opening; 3. moving mechanism; 31. hydraulic cylinder; 32. connecting rod; 33. first disc; 34. second disc; 35. rotating pin; 36. first Guide groove; 37, sleeve; 38, first baffle; 39, air inlet; 310, second guide groove; 310a, first straight slide groove; 310b, first inclined slide groove; 310c, second straight slide groove; 310d, second inclined slide groove; 311, second round rod; 4, collecting mechanism; 41, connecting block; 42, hollow groove; 43, T-shaped block; 44, collecting bucket; 45, filter screen; 46, second sleeve; 5, sealing mechanism; 51, second baffle; 52, sliding rod; 53, third sleeve; 54, third baffle; 55, spring; 56, fixing block. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figure 1-Figure 13 As shown, the environmental air comprehensive sampler for detecting particulate matter described in the present invention comprises an air suction mechanism 1, a gathering mechanism 2, a moving mechanism 3, a collecting mechanism 4, and a sealing mechanism 5. The upper end of the air suction mechanism 1 is provided with a gathering mechanism 2, one end of the gathering mechanism 2 is provided with a moving mechanism 3, one end of the moving mechanism 3 is provided with a collecting mechanism 4, and one end of the collecting mechanism 4 is provided with a sealing mechanism 5; through the set structure, the external air enters the first sleeve 23 through the air inlet, and under the action of the suction force, the cloth opening 25 is bent inwardly in an arc shape, so that the collected particles can be gathered at the cloth opening 25, and when the collecting bucket 44 is in contact with the opening, the particles in the cloth opening 25 can be transferred to the collecting bucket 44, and when the collecting bucket 44 is away from the opening 24, it will be sealed with the second baffle 51 and the second sleeve 46, and the set structure is used to start the motor 12 when the collecting bucket 44 is in contact with the opening 24 to drive the fan blades 19 to reverse and generate wind to transfer the particles collected at the cloth opening 25 to the inside of the collecting bucket 44.

[0037] Preferably, the suction mechanism 1 includes a base 11, a motor 12 is fixedly connected to the lower end of the base 11, a first rotating shaft 13 is fixedly connected to the lower end of the motor 12, a first spur gear 14 is fixedly connected to the side wall of the first rotating shaft 13, a second spur gear 15 is meshed with one end of the first spur gear 14, a second rotating shaft 16 is fixedly connected to the center of the second spur gear 15, a support block 17 is rotatably connected to the side wall of the second rotating shaft 16, the upper end of the support block 17 is fixedly connected to the base 11, a bearing 18 is fixedly connected to the side wall of the second rotating shaft 16, the lower end of the bearing 18 is fixedly connected to the support block 17, a fan blade 19 is fixedly connected to one end of the second rotating shaft 16, a circular ring 110 is sleeved on the outer side of the fan blade 19, the upper end of the circular ring 110 is fixedly connected to the base 11, a support plate 111 is fixedly connected to the upper end of the base 11, and the support The side wall of the support plate 111 is rotatably connected to the first round rod 112; first, the motor 12 is started to rotate, and the rotation of the motor 12 will drive the first rotating shaft 13 to rotate, and the rotation of the first rotating shaft 13 will drive the first spur gear 14 to rotate, and the rotation of the first spur gear 14 will drive the second spur gear 15 to rotate, and the rotation of the second spur gear 15 will drive the second rotating shaft 16 to rotate, and the rotation of the second rotating shaft 16 will drive the fan blades 19 to rotate, and the rotation of the fan blades 19 will generate suction, which will generate a low pressure in the ring 110. At this time, the external air will enter the first sleeve 23 from the air inlet 39, and the air inside the first sleeve 23 will escape from the bottom through the circular tube 22. The rotation of the fan blades 19 will generate suction, which will generate a low pressure in the ring 110. At this time, the external air will enter the first sleeve 23 from the air inlet 39, and the air inside the first sleeve 23 will escape from the bottom through the circular tube 22.

[0038] Preferably, the gathering mechanism 2 includes a cylinder 21, the lower end of the cylinder 21 is fixedly connected to the base 11, a circular tube 22 is fixedly connected inside the cylinder 21, one end of the circular tube 22 is fixedly connected to a first sleeve 23, a side wall of the first sleeve 23 is provided with an opening 24, and a side wall of the opening 24 is fixedly connected to a cloth port 25; when the fan blades 19 rotate to generate suction, external air enters the first sleeve 23 through the air inlet 39, and the external air enters the first sleeve 23 through the air inlet 39 and passes through the cloth port 25. Under the action of the suction, the cloth port 25 is in an inwardly curved arc shape, so that the collected air particles can be gathered at the cloth port 25. Through the set structure, the external air enters the first sleeve 23 through the air inlet 39 and passes through the cloth port 25. Under the action of the suction, the cloth port 25 is in an inwardly curved arc shape, so that the collected air particles can be gathered at the cloth port 25.

[0039] Preferably, the moving mechanism 3 includes a hydraulic cylinder 31, the lower end of the hydraulic cylinder 31 is fixedly connected to the base 11, the upper end of the hydraulic cylinder 31 is fixedly connected to a connecting rod 32, one end of the connecting rod 32 is fixedly connected to a first disc 33, the upper end of the first disc 33 is affixed to a second disc 34, the second disc 34 is provided with a first guide groove 36, the first guide groove 36 is slidably connected to a rotating pin 35, the upper end of the second disc 34 is fixedly connected to a sleeve 37, the sleeve 37 is rotatably connected to a second round rod 311, the lower end of the second round rod 311 is connected to the first disc 33 is fixedly connected, the lower end of the first disc 33 is fixedly connected to a first baffle 38, the interior of the first baffle 38 is slidably connected to an air inlet 39, the upper end of the air inlet 39 is fixedly connected to a rotating pin 35, the second guide groove 310 includes a first straight groove 310a, a first inclined groove 310b, a second straight groove 310c, and a second inclined groove 310d, the lower end of the first straight groove 310a is connected to the first inclined groove 310b, the lower end of the first inclined groove 310b is connected to the second straight groove 310c, and the lower end of the second straight groove 310c is connected to the second inclined groove 310d;At this time, the hydraulic cylinder 31 is started to move upward, and the upward movement of the hydraulic cylinder 31 will drive the connecting rod 32 to move upward, and the upward movement of the connecting rod 32 will drive the first disc 33 to move upward, and the upward movement of the first disc 33 will drive the second disc 34 to move upward, and the upward movement of the second disc 34 will drive the sleeve 37 to move upward, and the upward movement of the sleeve 37 will drive the second guide groove 310 to move upward. Because the first round rod 112 is arranged in the second guide groove 310, when the sleeve 37 moves upward and drives the second guide groove 310 to move upward, it will first slide in the first straight slide groove 310a section, and at this time it will indirectly drive the collecting bucket 44 to move vertically upward away from the second baffle plate 51, and when the first round rod 112 slides to the first inclined slide groove 310b section, the sleeve 37 will rotate counterclockwise around the second round rod 311, and the sleeve 37 rotates counterclockwise around the second round rod 311, which will drive the second disc 34 to rotate counterclockwise, and the first round rod 112 will rotate counterclockwise. The counterclockwise rotation of the second disc 34 will drive the rotating pin 35 to move outward, and the outward movement of the rotating pin 35 will drive the air inlet 39 to move outward. When the air inlet 39 moves outward, it will drive the connecting block 41 to move outward. The outward movement of the connecting block 41 will drive the collecting bucket 44 to move outward. When the first round rod 112 is in the second straight slide groove 310c section, the collecting bucket 44 will be at the same horizontal line as the opening 24. When the first round rod 112 slides to the second inclined slide groove 310d section, the collecting bucket 44 will fit with the opening 24. The structure provided can adjust the fit and distance between the collecting bucket 44 and the opening 24. When the collecting bucket 44 fits with the opening 24, the particles inside the material distributing port 25 can be transferred to the collecting bucket 44. When the collecting bucket 44 is away from the opening 24, it will fit and seal with the second baffle 51 and the second sleeve 46. Two second guide grooves 310 are provided on the surface of the sleeve 37. ;

[0040] Preferably, the collecting mechanism 4 includes a connecting block 41, the upper end of which is fixedly connected to the lower end of the air inlet 39, a hollow groove 42 is provided inside the connecting block 41, a T-shaped block 43 is slidably connected inside the hollow groove 42, a collecting bucket 44 is fixedly connected to the lower end of the T-shaped block 43, a filter screen 45 is fixedly connected to the inner side wall of the collecting bucket 44, and a second sleeve 46 is tightly fitted at one end of the collecting bucket 44; inclined surfaces are provided at the lower end of the collecting bucket 44 and the upper end of the second baffle 51, and when the collecting bucket 44 moves downward, the inclined surface of the bottom end contacts the inclined surface of the upper end of the second baffle 51, which will drive the second baffle 51 to move outward, and the outward movement of the second baffle 51 will drive the sliding rod 52 to move outward, and the outward movement of the sliding rod 52 will drive the third baffle 54 to move outward, and the outward movement of the third baffle 54 will compress the spring 55, when the collecting bucket 44 will be in contact with the opening 24 The air in the first sleeve 23 will blow the particles inside the cloth port 25 to the inside of the collecting bucket 44, and the air will be blown out from the filter 45. When the gas is blown out of the opening 24, the particles collected by the cloth port 25 will be transferred to the inside of the collecting bucket 44, and the air will be discharged from the filter 45. The structure is set up and the motor 12 is started to drive the fan blades 19 to reverse when the collecting bucket 44 is in contact with the opening 24. The reversal of the fan blades 19 will generate air. The air will transfer the particles collected by the cloth port 25 to the inside of the collecting bucket 44, and the air will be discharged from the filter 45. In addition, through the setting of six collecting buckets 44 and the opening 24, five groups of different particles can be taken for detection, so that the detection result can be more accurate.

[0041] Preferably, the sealing mechanism 5 includes a second baffle 51, the inner side wall of the second baffle 51 is tightly fitted with the side wall of the collecting bucket 44, the side wall of the second baffle 51 is fixedly connected to a sliding rod 52, the side wall of the sliding rod 52 is slidably connected to a third sleeve 53, one end of the sliding rod 52 is fixedly connected to a third baffle 54, one end of the third baffle 54 is fixedly connected to a spring 55, one end of the spring 55 is fixedly connected to the third sleeve 53, and one end of the third sleeve 53 is fixedly connected to a fixing block 56; when the collecting bucket 44 moves downward, The inclined part of its lower end is driven to fit with the inclined part of the upper end of the second baffle 51, so that the collection bucket 44 continues to move downward to drive the second baffle 51 to move outward, the outward movement of the second baffle 51 will drive the sliding rod 52 to move outward, the outward movement of the sliding rod 52 will drive the third baffle 54 to move outward, and the outward movement of the third baffle 54 will compress the spring 55. Through the set structure, the collection bucket 44 after collecting particles can be sealed between the second baffle 51 and the second sleeve 46, so that the collected particles can be sealed to avoid long-term contact with the outside world and contamination.

[0042] Working principle: When the present invention is in use, the motor 12 is first started to rotate. The rotation of the motor 12 will drive the first rotating shaft 13 to rotate. The rotation of the first rotating shaft 13 will drive the first spur gear 14 to rotate. The rotation of the first spur gear 14 will drive the second spur gear 15 to rotate. The rotation of the second spur gear 15 will drive the second rotating shaft 16 to rotate. The rotation of the second rotating shaft 16 will drive the fan blades 19 to rotate. The rotation of the fan blades 19 generates suction, which will produce a low pressure in the ring 110. At this time, the external air will enter the first sleeve 23 from the air inlet 39, and the air inside the first sleeve 23 will escape from the bottom through the circular tube 22. The rotation of the fan blades 19 generates suction, which will produce a low pressure in the ring 110. At this time, the external air will enter the first sleeve 23 from the air inlet 39, and the air inside the first sleeve 23 will escape from the bottom through the circular tube 22.

[0043] When the fan blades 19 rotate to generate suction, external air enters the first sleeve 23 through the air inlet 39. The external air enters the first sleeve 23 through the air inlet 39 and passes through the cloth port 25. Under the action of suction, the cloth port 25 bends inward in an arc shape, so that the collected air particles can be gathered at the cloth port 25. On the contrary, if air is blown, the cloth port 25 bends outward in an arc shape. Through the set structure, the external air enters the first sleeve 23 through the air inlet 39 and passes through the cloth port 25. Under the action of suction, the cloth port 25 bends inward in an arc shape, so that the collected air particles can be gathered at the cloth port 25.

[0044] At this time, the hydraulic cylinder 31 is started to move upward, and the upward movement of the hydraulic cylinder 31 will drive the connecting rod 32 to move upward, and the upward movement of the connecting rod 32 will drive the first disc 33 to move upward, and the upward movement of the first disc 33 will drive the second disc 34 to move upward, and the upward movement of the second disc 34 will drive the sleeve 37 to move upward, and the upward movement of the sleeve 37 will drive the second guide groove 310 to move upward. Because the first round rod 112 is arranged in the second guide groove 310, when the sleeve 37 moves upward and drives the second guide groove 310 to move upward, it will first slide in the first straight slide groove 310a section, and at this time it will indirectly drive the collecting bucket 44 to move vertically upward away from the second baffle plate 51. When the first round rod 112 slides to the first inclined slide groove 310b section, the sleeve 37 will rotate counterclockwise around the second round rod 311, and the sleeve 37 will rotate counterclockwise around the second round rod 311 to drive the second round rod 310 to move upward. The disc 34 rotates counterclockwise, and the counterclockwise rotation of the second disc 34 will drive the rotating pin 35 to move outward. The outward movement of the rotating pin 35 will drive the air inlet 39 to move outward. When the air inlet 39 moves outward, it will drive the connecting block 41 to move outward. The outward movement of the connecting block 41 will drive the collecting bucket 44 to move outward. When the first round rod 112 is in the second straight slide groove 310c section, the collecting bucket 44 will be on the same horizontal line as the opening 24. When the first round rod 112 slides to the second inclined slide groove 310d section, the collecting bucket 44 will fit with the opening 24. The structure provided can adjust the fit and distance between the collecting bucket 44 and the opening 24. When the collecting bucket 44 fits with the opening 24, the particles inside the material dispensing port 25 can be transferred to the collecting bucket 44. When the collecting bucket 44 is away from the opening 24, it will fit and seal with the second baffle 51 and the second sleeve 46.

[0045] The lower end of the collecting bucket 44 and the upper end of the second baffle 51 are both provided with inclined surfaces. When the collecting bucket 44 moves downward, the inclined surface of the bottom end contacts the inclined surface of the upper end of the second baffle 51, which drives the second baffle 51 to move outward. The outward movement of the second baffle 51 drives the sliding rod 52 to move outward. The outward movement of the sliding rod 52 drives the third baffle 54 to move outward. The outward movement of the third baffle 54 compresses the spring 55. When the collecting bucket 44 fits with the opening 24, the motor 12 is started at this time to drive the fan blades 19 to reverse. The reversal of the fan blades 19 will generate blowing air, which enters the first sleeve 23 through the circular tube 22. The blowing air inside the first sleeve 23 will push the cloth opening 24 outward. 5 is blown and transferred to the inside of the collecting bucket 44, and the air is blown out from the filter 45. When the opening 24 blows out gas, the particles collected by the cloth opening 25 are transferred to the inside of the collecting bucket 44, and the air is discharged from the filter 45. With the structure set, when the collecting bucket 44 is in contact with the opening 24, the motor 12 is started to drive the fan blade 19 to reverse, and the reverse rotation of the fan blade 19 generates blowing, and the blowing transfers the particles collected by the cloth opening 25 to the inside of the collecting bucket 44, and the air is discharged from the filter 45. In addition, by setting six collecting buckets 44 and the opening 24, five groups of different particles can be taken for detection, so that the detection result can be more accurate.

[0046] When the collecting bucket 44 moves downward, the inclined part of its lower end will be brought into contact with the inclined part of the upper end of the second baffle 51. In this way, the collecting bucket 44 continues to move downward, which will drive the second baffle 51 to move outward. The outward movement of the second baffle 51 will drive the sliding rod 52 to move outward. The outward movement of the sliding rod 52 will drive the third baffle 54 to move outward. The outward movement of the third baffle 54 will compress the spring 55. The collecting bucket 44 after collecting particles can be sealed between the second baffle 51 and the second sleeve 46 through the set structure. In this way, the collected particles can be sealed to avoid long-term contact and contamination with the outside world.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A comprehensive ambient air sampler for detecting particulate matter, characterized in that: The invention comprises an air suction mechanism (1), a gathering mechanism (2), a moving mechanism (3), a collecting mechanism (4), and a sealing mechanism (5); the gathering mechanism (2) is provided at the upper end of the air suction mechanism (1); the moving mechanism (3) is provided at one end of the gathering mechanism (2); the collecting mechanism (4) is provided at one end of the moving mechanism (3); and the sealing mechanism (5) is provided at one end of the collecting mechanism (4); The air suction mechanism (1) comprises a base (11), the lower end of the base (11) is fixedly connected to a motor (12), the lower end of the motor (12) is fixedly connected to a first rotating shaft (13), the side wall of the first rotating shaft (13) is fixedly connected to a first spur gear (14), one end of the first spur gear (14) is meshed with a second spur gear (15), the center of the second spur gear (15) is fixedly connected to a second rotating shaft (16), one end of the second rotating shaft (16) is fixedly connected to a fan blade (19), and the moving mechanism (3) comprises a hydraulic cylinder (31), the lower end of the hydraulic cylinder (31) is fixedly connected to the base (11), the upper end of the hydraulic cylinder (31) is fixedly connected to a connecting rod (32), one end of the connecting rod (32) is fixedly connected to a first disc (33), the upper end of the first disc (33) is affixed to a second disc (34), and the second disc (34) is provided with a A first guide groove (36) is provided, a rotating pin (35) is slidably connected inside the first guide groove (36), a sleeve (37) is fixedly connected to the upper end of the second disc (34), a second round rod (311) is rotatably connected inside the sleeve (37), the lower end of the second round rod (311) is fixedly connected to the first disc (33), the lower end of the first disc (33) is fixedly connected to the first baffle (38), the surface of the sleeve (37) is provided with two second guide grooves (310), the moving mechanism (3) also includes an air inlet (39), the first baffle (38) is slidably connected to the air inlet (39), the upper end of the air inlet (39) is fixedly connected to the rotating pin (35), the second guide groove (310) includes a first straight groove (310a), a first inclined groove (310b), a second straight groove (310c), and a second inclined groove (310d),The lower end of the first straight slide groove (310a) is connected to a first inclined slide groove (310b), the lower end of the first inclined slide groove (310b) is connected to a second straight slide groove (310c), the lower end of the second straight slide groove (310c) is connected to a second inclined slide groove (310d), the gathering mechanism (2) comprises a cylinder (21), the lower end of the cylinder (21) is fixedly connected to the base (11), the inside of the cylinder (21) is fixedly connected to a circular tube (22), the gathering mechanism (2) also comprises a first sleeve (23), the upper end of the circular tube (22) is fixedly connected to the first sleeve (23), and the side wall of the first sleeve (23) is provided with an opening The side wall of the opening (24) is fixedly connected with a material distribution opening (25), and the collecting mechanism (4) is fixedly connected with the lower end of the air inlet (39). When the fan blade (19) rotates to generate suction, external air enters the first sleeve (23) through the air inlet (39). External air enters the first sleeve (23) through the air inlet (39) and passes through the material distribution opening (25). The hydraulic cylinder (31) is started to move upward. When the collecting mechanism (4) is in contact with the opening (24), the fan blade (19) reverses to generate blowing air, and the blowing air blows the particles inside the material distribution opening (25) to the inside of the collecting mechanism (4).

2. The comprehensive ambient air sampler for detecting particulate matter according to claim 1, characterized in that: The air suction mechanism (1) also includes a support block (17), the side wall of the second rotating shaft (16) is rotatably connected to the support block (17), the upper end of the support block (17) is fixedly connected to the base (11), the side wall of the second rotating shaft (16) is fixedly connected to a bearing (18), the lower end of the bearing (18) is fixedly connected to the support block (17), one end of the second rotating shaft (16) is fixedly connected to a fan blade (19), the fan blade (19) is externally sleeved with a circular ring (110), the upper end of the circular ring (110) is fixedly connected to the base (11), the upper end of the base (11) is fixedly connected to a support plate (111), and the side wall of the support plate (111) is rotatably connected to a first round rod (112).

3. The comprehensive ambient air sampler for detecting particulate matter according to claim 1, characterized in that: The collecting mechanism (4) comprises a connecting block (41), the upper end of the connecting block (41) is fixedly connected to the lower end of the air inlet (39), a hollow groove (42) is provided inside the connecting block (41), and a T-shaped block (43) is slidably connected inside the hollow groove (42).

4. The comprehensive ambient air sampler for detecting particulate matter according to claim 3, characterized in that: The collecting mechanism (4) further comprises a collecting bucket (44), the lower end of the T-shaped block (43) is fixedly connected to the collecting bucket (44), the inner side wall of the collecting bucket (44) is fixedly connected to a filter screen (45), and one end of the collecting bucket (44) is tightly fitted with a second sleeve (46).

5. The comprehensive ambient air sampler for detecting particulate matter according to claim 4, characterized in that: The sealing mechanism (5) comprises a second baffle (51), the inner side wall of the second baffle (51) is tightly fitted with the side wall of the collecting bucket (44), the side wall of the second baffle (51) is fixedly connected to a sliding rod (52), the side wall of the sliding rod (52) is slidably connected to a third sleeve (53), one end of the sliding rod (52) is fixedly connected to the third baffle (54), and the collecting bucket (44) is arranged between the second baffle (51) and the second sleeve (46).

6. The comprehensive ambient air sampler for detecting particulate matter according to claim 5, characterized in that: The sealing mechanism (5) further comprises a spring (55), one end of the third baffle (54) is fixedly connected to the spring (55), one end of the spring (55) is fixedly connected to the third sleeve (53), and one end of the third sleeve (53) is fixedly connected to a fixing block (56).

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