Air dust sampling device for atmospheric monitoring

Abstract

The invention belongs to the technical field of atmosphere monitoring equipment, and relates to an air dust sampling device for atmosphere monitoring, which comprises an equipment platform, a bearing base, a lifting mechanism, a rotating mechanism, an air collecting mechanism, a range adjusting mechanism and a dust collecting mechanism, the gas collecting mechanism comprises a gas inlet cover and a gas inlet cylinder which are communicated through a hose, an exhaust pipe is arranged on the side face of the gas inlet cylinder, the dust collecting mechanism comprises a dust collecting cylinder, one end of the dust collecting cylinder is in threaded connection with the outlet end of the exhaust pipe, the range adjusting mechanism comprises a supporting frame, and the gas inlet cover is fixed to the top end of the supporting frame. The electric rotating disc drives the supporting frame and the air inlet cover to rotate, so that the air inlet cover can rotate in different ranges, airflow can be injected into the air inlet cover, atmospheric dust can be collected in different airflow environments, the rotating air inlet cover can collect airflow in multiple directions, and the dust sampling result is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of atmospheric monitoring equipment, and in particular to an air dust sampling device for atmospheric monitoring. Background Art

[0002] Atmospheric monitoring, namely air monitoring, refers to the fixed-point, continuous or timed sampling and measurement of pollutants existing in the air. In order to monitor the air, several air monitoring points are generally set up in a city, and a dust sampling device is usually used to sample the dust in the air, so as to facilitate the analysis of atmospheric data.

[0003] In the prior art, the utility model with the application number 202022735619.0 discloses a dust sampler for environmental detection, which includes a sampler main body. A control panel is embedded in the front of the sampler main body. A collection mechanism is fixedly connected to one side of the sampler main body. One end of the collection mechanism is fixedly connected to a transport pipe. An air suction pump and a flow meter are respectively fixedly connected to the outer side of the transport pipe. A dust collection box is movably connected to the other side of the sampler main body. A wind direction sensor is fixedly connected to the top of the sampler main body. An installation top plate is fixedly connected to the bottom of the sampler main body. A drive box is movably connected to the bottom of the installation top plate. A lithium battery and a drive motor are respectively fixedly connected to the inside of the drive box. The drive end of the drive motor is rotationally connected to an installation column. A fixed rod is fixedly connected to the bottom of the drive box. By setting the wind direction sensor and the drive motor, the collection mechanism on the sampler main body is aligned with the wind direction to collect dust, so the collection effect of the dust sampler is improved. However, this patent still has some deficiencies: 1. When sampling dust from the atmosphere with a slow air flow rate, the dust collection speed is slow and the sampling range is small. 2. When sampling dust in an environment with rapidly changing wind directions, it is necessary to frequently change the direction, resulting in different residence times in each direction, and thus uneven dust sampling, which affects the sampling results. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: In order to solve the problem of difficult dust sampling from the atmosphere in an environment with low wind speed and complex wind directions, the present invention provides an air dust sampling device for atmospheric monitoring to solve the above problems.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: An air dust sampling device for atmospheric monitoring, including an equipment platform, on which a supporting base is fixed. It also includes a lifting mechanism, a rotating mechanism, a gas collection mechanism, a range adjustment mechanism, and a dust collection mechanism. The lifting mechanism is fixed at the bottom of the equipment platform. The rotating mechanism includes an electric turntable, which is rotatably installed on the supporting base. The gas collection mechanism includes an air inlet hood and an air inlet cylinder, and the air inlet hood and the air inlet cylinder are connected through a hose. The air inlet cylinder is fixed at the center of the electric turntable, and an exhaust pipe is provided on the side of the air inlet cylinder. The dust collection mechanism includes a dust collection cylinder, and one end of the dust collection cylinder is threadedly connected to the outlet end of the exhaust pipe. The range adjustment mechanism includes a support frame that can move up and down. The air inlet hood is fixed at the top of the support frame, and the hose is arranged along the surface of the support frame.

[0006] Preferably, the dust collection mechanism further includes a filter paper cover. One end of the inner wall of the filter paper cover is provided with a card slot that can engage with the edge of the clamped filter paper, and the other end of the filter paper cover is fixedly connected to the outlet end of the dust collection cylinder through a thread.

[0007] Preferably, the range adjustment mechanism further includes a guide rail bracket, a slider, an adjustment screw, and an adjustment handwheel. The guide rail bracket is installed on the top of the air inlet cylinder. The adjustment screw is vertically rotatably installed on the guide rail bracket. One end of the adjustment screw is coaxially fixedly connected to the adjustment handwheel. The slider is slidably installed on the guide rail bracket. The adjustment screw passes through the slider and is threadedly connected to the slider. Connecting seats are fixed on both sides of the slider, and the support frame is installed on the connecting seats.

[0008] Preferably, a cover plate is fixed on the top of the air inlet cylinder. The guide rail bracket is fixed at the center of the cover plate. A plurality of upright columns are equally spaced and fixedly connected to the edge of the cover plate. The top of the upright columns is fixedly connected with a sliding ring. The bottom end of the support frame is rotatably connected to the connecting seat, and the outer side of the support frame is slidably connected to the sliding ring.

[0009] Preferably, a semi-cylindrical strip is further fixed on the side of the support frame facing the sliding ring, and the semi-cylindrical strip is in sliding contact with the sliding ring.

[0010] Preferably, the front end of the air inlet hood is arranged in a flared shape. A bent pipe is fixed at the rear end of the air inlet hood, and the end of the bent pipe is fixedly connected to the hose through a pipe joint, and the pipe joint is fixedly connected to the top of the support frame.

[0011] Preferably, anti-slip protrusions are fixed on the outer walls of both the filter paper cover and the dust collection cylinder.

[0012] Preferably, the lifting mechanism includes a bottom plate, a bottom carriage, a top carriage, an electric screw, a slide bar, and a plurality of connecting rods. The bottom carriage is fixed to the bottom plate, and the top carriage is fixed to the equipment platform. The plurality of connecting rods are cross-rotatably connected to form a shear frame. One end of the bottom of the shear frame is rotatably installed on the bottom carriage, and the other end of the bottom of the shear frame is slidably installed on the bottom carriage and fixedly connected to the slide bar. One end of the top of the shear frame is rotatably installed on the top carriage, and the other end of the top of the shear frame is slidably installed on the top carriage. A push block is threadedly connected to the electric screw, and the push block is rotatably connected to the middle of the slide bar.

[0013] The beneficial effects of the present invention are as follows: A range adjustment mechanism and a dust collection mechanism are provided. The air inlet hood of the dust collection mechanism is fixed to the top end of the support frame of the range adjustment mechanism. The support frame and the air inlet hood are driven by an electric turntable to rotate, so that the air inlet hood can rotate within different ranges, enabling air flow to be poured into the air inlet hood, so that atmospheric dust can be collected in different air flow environments. The rotating air inlet hood can also collect air flow in multiple directions, making the dust sampling result more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is the overall structural schematic diagram of an air dust sampling device for atmospheric monitoring according to the present invention; Figure 2 is the structural schematic diagram of the support base of an air dust sampling device for atmospheric monitoring according to the present invention; Figure 3 is the structural schematic diagram of the dust collection cylinder of an air dust sampling device for atmospheric monitoring according to the present invention; Figure 4 is the structural schematic diagram of the support frame of an air dust sampling device for atmospheric monitoring according to the present invention; Figure 5 is the structural schematic diagram of the guide rail bracket of an air dust sampling device for atmospheric monitoring according to the present invention.

[0016] Reference numerals: 1, equipment platform; 2, supporting base; 3, lifting mechanism; 4, rotating mechanism; 5, air collecting mechanism; 6, dust collecting mechanism; 7, electric turntable; 8, air inlet hood; 9, air inlet tube; 10, hose; 11, exhaust pipe; 12, dust collecting cylinder; 13, support frame; 14, filter paper cover; 15, guide rail bracket; 16, slider; 17, adjusting screw; 18, adjusting handwheel; 19, cover plate; 20, column; 21, slip ring; 22, semi-cylindrical strip; 23, elbow pipe; 24, pipe joint; 25, bottom plate; 26, bottom slide carriage; 27, top slide carriage; 28, electric screw; 29, shear frame; 30, slide bar; 31, push block. Detailed implementation manners

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0018] As Figures 1 to 5 shown, the present invention provides an embodiment of an air dust sampling device for atmospheric monitoring, including an equipment platform 1, a supporting base 2 fixed on the equipment platform 1, and further including a lifting mechanism 3, a rotating mechanism 4, an air collecting mechanism 5, a range adjusting mechanism and a dust collecting mechanism 6. The lifting mechanism 3 is fixed at the bottom of the equipment platform 1. The rotating mechanism 4 includes an electric turntable 7, and the electric turntable 7 is rotatably installed on the supporting base 2. The air collecting mechanism 5 includes an air inlet hood 8 and an air inlet tube 9. The air inlet hood 8 and the air inlet tube 9 are connected through a hose 10. The air inlet tube 9 is fixed at the center of the electric turntable 7. An exhaust pipe 11 is provided on the side surface of the air inlet tube 9. The dust collecting mechanism 6 includes a dust collecting cylinder 12. One end of the dust collecting cylinder 12 is threadedly connected to the outlet end of the exhaust pipe 11. The range adjusting mechanism includes a support frame 13 that can move up and down. The air inlet hood 8 is fixed at the top end of the support frame 13. The hose 10 is arranged along the surface of the support frame 13.

[0019] The dust collecting mechanism 6 further includes a filter paper cover 14. A card slot capable of engaging with the edge of the filter paper is provided on the inner wall of one end of the filter paper cover 14. The other end of the filter paper cover 14 is fixedly connected to the outlet end of the dust collecting cylinder 12 through a thread.

[0020] The working principle of the dust collection mechanism 6 is as follows: First, the equipment platform 1 is lifted by the lifting mechanism 3. Then, the electric turntable 7 drives the support frame 13 and the air inlet hood 8 at the top of the support frame 13 to rotate. During the rotation of the air inlet hood 8, the opening direction is always tangent to the rotation direction, so that the air flow is poured into the air inlet hood 8, enabling the collection of atmospheric dust in different air flow environments. At the same time, the rotating air inlet hood 8 can also collect air flows in multiple directions, making the dust sampling result more accurate. Then, it is conveyed into the air inlet cylinder 9 through the hose 10, increasing the air pressure in the air inlet cylinder 9. While the electric turntable 7 rotates, it also drives the air inlet cylinder 9 to rotate. The rotation of the air inlet cylinder 9 drives the exhaust pipe 11 and the dust collection cylinder 12 on its side wall to move. The straight line where the opening direction of the dust collection cylinder 12 passes through the center of the air inlet cylinder 9. Therefore, when the dust collection cylinder 12 is driven by the air inlet cylinder 9 to move, the air flow velocity at the outlet end of the dust collection cylinder 12 will increase and the air flow direction is perpendicular to the outlet end of the dust collection cylinder 12, causing the air pressure in the dust collection cylinder 12 to decrease. Thus, the air flow can flow from the air inlet cylinder 9 into the dust collection cylinder 12 and finally discharge from the dust collection cylinder 12 through the filter paper cover 14. When the air flow passes through the filter paper cover 14, the dust samples in the atmosphere can be intercepted in the dust collection cylinder 12. When the dust samples are collected, the dust collection cylinder 12 can be directly removed. When taking multiple samples, the filter paper cover 14 can also be removed to replace the filter paper to maintain the filtering effect of the filter paper on the dust in the atmosphere.

[0021] The range adjustment mechanism further includes a guide rail bracket 15, a slider 16, an adjustment screw 17, and an adjustment handwheel 18. The guide rail bracket 15 is installed on the top of the air inlet cylinder 9. The adjustment screw 17 is vertically rotatably installed on the guide rail bracket 15. One end of the adjustment screw 17 is coaxially and fixedly connected to the adjustment handwheel 18. The slider 16 is slidably installed on the guide rail bracket 15. The adjustment screw 17 passes through the slider 16 and is threadedly connected to the slider 16. Connecting seats are fixed on both sides of the slider 16. The bottom end of the support frame 13 is installed on the connecting seats.

[0022] A cover plate 19 is fixed on the top of the air inlet cylinder 9. The guide rail bracket 15 is fixed at the center of the cover plate 19. A plurality of upright columns 20 are equally spaced and fixed on the edge of the cover plate 19. A slip ring 21 is fixed at the top of the upright columns 20. The bottom end of the support frame 13 is rotatably connected to the connecting seat. The outer side of the support frame 13 is slidably connected to the slip ring 21. A semi-cylindrical strip 22 is also fixed on the side of the support frame 13 facing the slip ring 21. The semi-cylindrical strip 22 is in sliding contact with the slip ring 21. When the slider 16 drives the bottom end of the support frame 13 to move up and down, under the action of gravity, the semi-cylindrical strip 22 on the support frame 13 will slide up and down against the slip ring 21. The sliding fit between the semi-cylindrical strip 22 and the slip ring 21 can reduce the wear on the support frame 13.

[0023] The working principle of the range adjustment mechanism is as follows: When conducting fixed-point monitoring and sampling of the atmosphere in a small area, first lower the equipment platform 1, and then rotate the adjustment handwheel 18 and the adjustment screw 17 to lower the slider 16. During the descent of the slider 16, the bottom end of the support frame 13 is driven to move downward below the slip ring 21. One side of the support frame 13 where the semi-cylindrical strip 22 is fixed will slide downward along the slip ring 21. At this time, the contact point between the slip ring 21 and the support frame 13 can be regarded as the fulcrum of the lever. Therefore, the top end of the support frame 13 will gradually be lifted and move closer to the center, thereby retracting the support frame 13. At this time, when the electric turntable 7 rotates, the air inlet hood 8 at the top end of the support frame 13 can rotate within a small range to collect dust samples in the air. In addition, when the support frame 13 is retracted, it is in a vertical state, and at this time the air inlet hood 8 is further lifted, so it can also monitor and sample the atmosphere at higher altitudes. When conducting monitoring and sampling of the atmosphere in a large area, rotate the adjustment screw 17 in the reverse direction to raise the slider 16 and drive the bottom end of the support frame 13 to move upward above the slider 16 until the bottom end of the support frame 13 moves above the slip ring 21. At this time, the support frame 13 can expand outward and remain horizontally placed. At this time, when the electric turntable 7 rotates, the air inlet hood 8 at the top end can rotate within a large range to collect dust samples in the air.

[0024] The front end of the air inlet hood 8 is provided with a flared opening. A bent pipe 23 is fixed to the rear end of the air inlet hood 8. The end of the bent pipe 23 is fixedly connected to the flexible hose 10 through a pipe joint 24. The pipe joint 24 is fixedly connected to the top end of the support frame 13. The bent pipe 23 is made of a metal pipe. The two ends of the bent pipe 23 are respectively fixedly connected to the pipe joint 24 and the air inlet hood 8, which plays a role in fixing the air inlet hood 8 to prevent the air inlet hood 8 from being blown crooked by the airflow. Connecting the relatively rigid metal bent pipe 23 and the flexible hose 10 through the pipe joint 24 can seal the joint between the two to prevent air leakage at the joint. At the same time, the pipe joint 24 is fixedly connected to the support frame 13, which can also play a role in stabilizing the pipe joint 24 to prevent the pipe joint 24 from shaking and causing a decrease in sealing performance.

[0025] Anti-slip protrusions are fixed on the outer walls of the filter paper cover 14 and the dust collection cylinder 12, which facilitates the disassembly and assembly of the filter paper cover 14 and the dust collection cylinder 12. The anti-slip protrusions can also indicate the positions of the filter paper cover 14 and the dust collection cylinder 12 to prevent incorrect disassembly during disassembly.

[0026] The lifting mechanism 3 includes a bottom plate 25, a bottom carriage 26, a top carriage 27, an electric screw rod 28, a slide rod 30 and a plurality of connecting rods. The bottom carriage 26 is fixed on the bottom plate 25, and the top carriage 27 is fixed on the equipment platform 1. The plurality of connecting rods are cross-rotationally connected to form a shear frame 29. One end of the bottom of the shear frame 29 is rotatably installed on the bottom carriage 26, and the other end of the bottom of the shear frame 29 is slidably installed on the bottom carriage 26 and fixedly connected to the slide rod 30. One end of the top of the shear frame 29 is rotatably installed on the top carriage 27, and the other end of the top of the shear frame 29 is slidably installed on the top carriage 27. A push block 31 is threadedly connected to the electric screw rod 28, and the push block 31 is rotatably connected to the middle of the slide rod 30. When the electric screw rod 28 rotates to drive the push block 31 to move, the whole shear frame 29 can be elongated or lowered upward, thereby driving the equipment platform 1 to rise or fall.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0028] Taking the above-mentioned ideal embodiment of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An air dust sampling device for atmospheric monitoring, comprising a device platform (1), a supporting base (2) being fixed on the device platform (1), characterized in that: The device also comprises a lifting mechanism (3), a rotating mechanism (4), an air collecting mechanism (5), a range adjustment mechanism and a dust collecting mechanism (6), wherein the lifting mechanism (3) is fixed at the bottom of the equipment platform (1), the rotating mechanism (4) comprises an electric turntable (7), the electric turntable (7) is rotatably mounted on the supporting base (2), the air collecting mechanism (5) comprises an air intake hood (8) and an air intake cylinder (9), the air intake hood (8) and the air intake cylinder (9) are connected via a hose (10), the air intake cylinder (9) is fixed at the center of the electric turntable (7), an exhaust pipe (11) is provided on the side of the air intake cylinder (9), the dust collecting mechanism (6) comprises a dust collecting cylinder (12), one end of the dust collecting cylinder (12) is threadedly connected to the outlet end of the exhaust pipe (11), the range adjustment mechanism comprises a support frame (13) that can move up and down, the air intake hood (8) is fixed at the top of the support frame (13), and the hose (10) is arranged along the surface of the support frame (13).

2. The air dust sampling device for atmosphere monitoring according to claim 1, characterized in that: The dust collecting mechanism (6) further comprises a filter paper cover (14), wherein an inner wall at one end of the filter paper cover (14) is provided with a slot capable of engaging with an edge of a clamping filter paper, and the other end of the filter paper cover (14) is fixedly connected to the outlet end of the dust collecting barrel (12) via a thread.

3. The air dust sampling device for atmosphere monitoring according to claim 1, characterized in that: The range adjustment mechanism further comprises a guide rail bracket (15), a slider (16), an adjustment screw (17) and an adjustment hand wheel (18); the guide rail bracket (15) is mounted on the top of the air intake cylinder (9); the adjustment screw (17) is vertically rotatably mounted on the guide rail bracket (15); one end of the adjustment screw (17) is coaxially fixedly connected to the adjustment hand wheel (18); the slider (16) is slidably mounted on the guide rail bracket (15); the adjustment screw (17) passes through the slider (16) and is threadedly connected to the slider (16); connecting seats are fixed on both sides of the slider (16); and the support frame (13) is mounted on the connecting seats.

4. The air dust sampling device for atmosphere monitoring according to claim 3 is characterized in that: A cover plate (19) is fixed on the top of the air intake cylinder (9), the guide rail bracket (15) is fixed at the center of the cover plate (19), a plurality of columns (20) are fixed at equal intervals on the edge of the cover plate (19), a slip ring (21) is fixed on the top of the column (20), the bottom end of the support frame (13) is rotatably connected to the connecting seat, and the outward side of the support frame (13) is slidably connected to the slip ring (21).

5. The air dust sampling device for atmosphere monitoring according to claim 4, characterized in that: A semi-cylindrical bar (22) is also fixed to a side of the support frame (13) facing the slip ring (21), and the semi-cylindrical bar (22) is in sliding contact with the slip ring (21).

6. The air dust sampling device for atmosphere monitoring according to claim 1, characterized in that: The front end of the air intake hood (8) is arranged in a bell-mouth shape, and a bent pipe (23) is fixed to the rear end of the air intake hood (8); the end of the bent pipe (23) is fixedly connected to the hose (10) via a pipe joint (24), and the pipe joint (24) is fixedly connected to the top end of the support frame (13).

7. The air dust sampling device for atmosphere monitoring according to claim 2, characterized in that: Anti-slip protrusions are fixed on the outer walls of the filter paper cover (14) and the dust collecting cylinder (12).

8. The air dust sampling device for atmosphere monitoring according to claim 1, characterized in that: The lifting mechanism (3) comprises a bottom plate (25), a bottom slide (26), a top slide (27), an electric screw (28), a slide bar (30) and a plurality of connecting rods, wherein the bottom slide (26) is fixed on the bottom plate (25), the top slide (27) is fixed on the equipment platform (1), and the plurality of connecting rods are cross-rotatably connected to form a shear frame (29), one end of the bottom of the shear frame (29) is rotatably mounted on the bottom slide (26), the other end of the bottom of the shear frame (29) is slidably mounted on the bottom slide (26) and fixedly connected to the slide bar (30), one end of the top of the shear frame (29) is rotatably mounted on the top slide (27), the other end of the top of the shear frame (29) is slidably mounted on the top slide (27), and a push block (31) is threadedly connected to the electric screw (28), and the push block (31) is rotatably connected to the middle part of the slide bar (30).

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