Air sampler for air detection

Abstract

The utility model discloses an air sampler for air detection, which relates to the technical field of air detection and comprises a bottom plate, the top of the bottom plate is fixedly connected with a collecting mechanism, the left and right parts of the bottom of the bottom plate are fixedly connected with wheel sets, and the left and right parts of the top of the bottom plate are rotatably connected with brake mechanisms. The collecting mechanism comprises a connecting rod, and the bottom of the connecting rod is fixedly connected with the middle position of the top of the bottom plate. According to the air sampler for air detection disclosed by the utility model, the lifting rod moves downwards through the rotationally arranged baffle plate, so that the anti-slip strip is driven to be in contact with the wheel set, and certain friction can be generated when the anti-slip strip is in contact with the wheel set, so that the wheel set cannot rotate, and a certain braking effect is further achieved; and meanwhile, the arranged non-slip mat is hemispherical and is made of a soft material, so that the non-slip mat can be extruded to a certain extent after being in contact with the ground, larger friction force between the non-slip mat and the ground is achieved, a better braking effect is achieved, and air in a staying area can be conveniently collected.

Description

Technical Field

[0001] The utility model relates to the technical field of air detection, in particular to an air sampler for air detection. Background Art

[0002] With the rapid development of social economy, people's material living conditions are getting better and better, but there are also more and more social problems, such as air, water quality and other environmental pollution problems. Especially living in crowded cities, due to the dense urban space and many pollution sources, the urban air quality is poor, which directly affects people's health and life. When testing the air quality, it is necessary to first use an air sampler to take samples.

[0003] For example, the Chinese patent with publication number CN208653881U discloses an air sampler for indoor air detection, including an outer tube, an inner tube and a screw cap, the outer tube and the inner tube are both cylindrical tubes with openings at both ends, an outer thread is provided on the outer edge cylindrical side of the top of the outer tube, an inner thread is provided on the inner cylindrical side of the screw cap, a flange is provided inwardly at the bottom opening of the inner tube, the inner diameter of the outer tube is the same as the outer diameter of the inner tube, the outer tube is tightly sleeved on the outside of the inner tube, two groups of slide grooves are provided on the inner wall of the inner tube along the axial centerline of the inner tube, and connecting rods are slidably inserted inside the two groups of slide grooves, the upper and lower ends of the two groups of connecting rods are respectively provided with a first cover and a second cover, the top ends of the two groups of connecting rods are fixedly connected to the outer edge of the bottom end surface of the first cover, and the bottom ends are fixedly connected to the annular side of the second cover. The air sampler for indoor air detection is easy to use and carry, and the indoor air collection process is simple to operate, and can be widely promoted and used.

[0004] The existing technology has the following problems:

[0005] When sampling, the position of the air sampler needs to be changed, or it needs to stay in one place, but the existing air collector cannot achieve good position adjustment and is prone to move when staying, resulting in large differences in the collected air areas. At the same time, the existing air collector is difficult to perform preliminary treatment of the air, resulting in dust in the air entering the sampling bottle, affecting the subsequent cleaning of the sampling bottle. Utility Model Content

[0006] The utility model provides an air sampler for air detection to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] An air sampler for air detection comprises a bottom plate, a collecting mechanism is fixedly connected to the top of the bottom plate, wheel sets are fixedly connected to the left and right positions of the bottom of the bottom plate, and a braking mechanism is rotatably connected to the left and right positions of the top of the bottom plate.

[0009] Preferably: the collection mechanism includes a connecting rod, the bottom of the connecting rod is fixedly connected to the middle position of the top of the base plate, the top of the connecting rod is fixedly connected to a collection sleeve, the top of the collection sleeve is fixedly connected to a plurality of air outlet pipes in a circular array, the inner walls of the plurality of air outlet pipes are movably connected to a plurality of sampling bottles, the inner wall of the collection sleeve is fixedly connected to a fixed sleeve, the middle position of the top of the fixed sleeve is fixedly connected to a motor, the output end of the motor passes through the top of the fixed sleeve and is fixedly connected to a rotating shaft, the bottom of the rotating shaft is rotatably connected to the bottom of the inner wall of the fixed sleeve, a plurality of ventilation holes are opened in a circular array at the lower position of the outer surface of the collection sleeve, and a plurality of ventilation grooves are opened in a circular array on the upper and lower sides of the fixed sleeve.

[0010] Preferably, the outer surface of the rotating shaft is fixedly connected with a plurality of fan blades in an annular array, the fan blades are in the shape of inclined plates, and the length of the fan blades is smaller than the inner wall radius of the fixed sleeve.

[0011] Preferably: a dustproof net is fixedly connected to the inner wall of the collection sleeve, the dustproof net is located directly below the fixed sleeve, and the dustproof net is located above the vent hole.

[0012] Preferably, the four corners of the lower portion of the outer surface of the connecting rod are fixedly connected with fixing plates, and the fixing plates are in a triangular inclined shape.

[0013] Preferably: the braking mechanism includes two rocking arms 1 and two lifting rods, the lower ends of the two rocking arms 1 are rotatably connected to the left and right positions of the top of the base plate, the bottoms of the two rocking arms 1 are fixedly connected with threaded rods passing through the top of the base plate, the outer surfaces of the threaded rods are threadedly connected with a lifting plate, the top of the lifting plate is fixedly connected with a slide plate, the outer surfaces of the two lifting rods are movably connected to the left and right positions of the top of the base plate, the upper positions of the two lifting rods are fixedly connected with circular plates, the bottoms of the circular plates are fixedly connected with springs, the bottoms of the two lifting rods are fixedly connected with brake plates, and the left and right positions of the top of the base plate are rotatably connected with baffles.

[0014] Preferably, a plurality of anti-skid pads are fixedly connected to the bottom of the lifting plate in a linear array, and the anti-skid pads are hemispherical in shape.

[0015] Preferably, wheel grooves are provided at the left and right positions of the bottom of the brake plate, the diameter of the wheel grooves is consistent with the diameter of the outer surface of the middle part of the wheel set, and a plurality of anti-slip strips are fixedly connected to the surface of the wheel grooves in a linear array.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides an air sampler for air detection. By rotating the baffle, the lifting rod moves downward, thereby driving the anti-skid strip to contact the wheel set. The contact between the two can generate a certain friction, so that the wheel set cannot rotate, thereby achieving a certain braking effect. At the same time, the anti-skid pad is hemispherical and made of a soft material. After contacting the ground, it will be squeezed to a certain extent, thereby achieving greater friction with the ground, achieving a better braking effect, and facilitating the collection of air in the staying area.

[0018] 2. The utility model provides an air sampler for air detection. By starting the motor, multiple fan blades can be driven to rotate. The fan blades are arranged in an inclined plate shape, which can provide more stable wind force when rotating. The dust-proof net is arranged, and the dust-proof net will adhere to the dust in the air, so that the degree of air pollution is further reduced, which is more conducive to inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the collection mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the collection mechanism of the utility model;

[0022] Figure 4 This is a schematic cross-sectional view of the brake mechanism of the utility model;

[0023] Figure 5 It is a partial cross-sectional structural schematic diagram of the brake mechanism of the utility model;

[0024] Figure 6 It is a partial structural schematic diagram of the brake mechanism of the utility model.

[0025] In the figure: 1, bottom plate; 2, wheel set; 3, brake mechanism; 4, collection mechanism; 30, baffle; 31, rocker 1; 32, slide plate; 33, threaded rod; 34, lifting plate; 35, anti-skid pad; 36, lifting rod; 37, round plate; 38, spring; 39, brake plate; 301, wheel groove; 302, anti-skid strip; 40, fixing plate; 41, connecting rod; 42, vent; 43, collection sleeve; 44, dustproof net; 45, motor; 46, ventilation slot; 47, fixing sleeve; 48, exhaust pipe; 49, sampling bottle; 401, rotating shaft; 402, fan blade. DETAILED DESCRIPTION

[0026] 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 described below in conjunction with specific implementation methods.

[0027] like Figure 1 As shown, an air sampler for air detection includes a base plate 1, a collecting mechanism 4 is fixedly connected to the top of the base plate 1, a wheel set 2 is fixedly connected to the left and right positions of the bottom of the base plate 1, and a braking mechanism 3 is rotatably connected to the left and right positions of the top of the base plate 1.

[0028] It should be noted that by rotating the baffle 30, the lifting rod 36 moves downward, thereby driving the anti-skid strip 302 to contact the wheel group 2. The contact between the two can generate a certain friction, so that the wheel group 2 cannot rotate, thereby achieving a certain braking effect. At the same time, the anti-skid pad 35 is hemispherical and made of a soft material. After contacting the ground, it will be squeezed to a certain extent, thereby achieving greater friction with the ground and achieving a better braking effect, thereby facilitating the collection of air in the stay area. By starting the motor 45, multiple fan blades 402 can be driven to rotate. The fan blades 402 are inclined plate-shaped, which can provide more stable wind force when rotating. In conjunction with the dustproof net 44, the dustproof net 44 will adhere to the dust in the air, so that the degree of air pollution is further reduced, reducing the difficulty of subsequent cleaning of the sampling bottle 49.

[0029] like Figure 2 , Figure 3 As shown, the collection mechanism 4 includes a connecting rod 41, the bottom of the connecting rod 41 is fixedly connected to the middle position of the top of the base plate 1, the top of the connecting rod 41 is fixedly connected with a collection sleeve 43, the top of the collection sleeve 43 is fixedly connected with a plurality of air outlet pipes 48 in an annular array, the inner walls of the plurality of air outlet pipes 48 are movably connected with a plurality of sampling bottles 49, the inner wall of the collection sleeve 43 is fixedly connected with a fixing sleeve 47, the middle position of the top of the fixing sleeve 47 is fixedly connected with a motor 45, the output end of the motor 45 passes through the top of the fixing sleeve 47 and is fixedly connected with a rotating shaft 401, the bottom of the rotating shaft 401 is rotatably connected to the bottom of the inner wall of the fixing sleeve 47, the lower position of the outer surface of the collection sleeve 43 is provided with a plurality of ventilation holes 42 in an annular array, and the upper and lower sides of the fixing sleeve 47 are provided with a plurality of ventilation grooves 46 in an annular array.

[0030] It should be noted that by starting the motor 45, the rotating shaft 401 rotates clockwise, thereby driving the multiple fan blades 402 to rotate clockwise. The fan blades 402 are arranged in an inclined plate shape, which can provide more stable wind force when rotating. The fan blades 402 rotate slowly, so that the air below flows upward through the ventilation grooves 46, and the outside air is sucked in through the connecting rod 41, and first contacts the dustproof net 44. The dustproof net 44 will adhere to the dust in the air, so that the degree of air pollution is further reduced, which is more helpful for inspection, and then the air will enter the sampling bottle 49 through the outlet pipe 48, thereby completing the sampling of the air.

[0031] like Figure 3 As shown, the outer surface of the rotating shaft 401 is fixedly connected with a plurality of fan blades 402 in an annular array. The fan blades 402 are in the shape of inclined plates, and the length of the fan blades 402 is smaller than the inner wall radius of the fixing sleeve 47 .

[0032] It should be noted that the fan blades 402 are arranged in an inclined plate shape, which can provide more stable wind force when rotating.

[0033] like Figure 2 As shown, a dustproof net 44 is fixedly connected to the inner wall of the collection sleeve 43 , and the dustproof net 44 is located directly below the fixed sleeve 47 , and the dustproof net 44 is located above the vent hole 42 .

[0034] It should be noted that the dustproof net 44 will absorb the dust in the air, so that the degree of air pollution is further reduced.

[0035] like Figure 2 As shown, the four corners of the lower outer surface of the connecting rod 41 are fixedly connected with fixing plates 40, and the shape of the fixing plates 40 is a triangular inclined shape.

[0036] It should be noted that the fixing plate 40 is triangular in shape, which provides more stable support for the connecting rod 41 and ensures the stability of the connecting rod 41 during the movement.

[0037] like Figure 4 , Figure 5 As shown, the braking mechanism 3 includes two rocking arms 31 and two lifting rods 36, the lower ends of the two rocking arms 31 are rotatably connected to the left and right positions of the top of the base plate 1, the bottoms of the two rocking arms 31 are both fixedly connected with threaded rods 33 passing through the top of the base plate 1, the outer surfaces of the threaded rods 33 are threadedly connected with a lifting plate 34, the top of the lifting plate 34 is fixedly connected with a slide plate 32, the outer surfaces of the two lifting rods 36 are movably connected to the left and right positions of the top of the base plate 1, the upper positions of the two lifting rods 36 are both fixedly connected with circular plates 37, the bottoms of the circular plates 37 are fixedly connected with springs 38, the bottoms of the two lifting rods 36 are fixedly connected with brake plates 39, and the left and right positions of the top of the base plate 1 are both rotatably connected with baffles 30.

[0038] It should be noted that the baffle plate 30 is rotated so that the baffle plate 30 contacts the lifting rod 36. The upper end of the lifting rod 36 is spherical and can be well squeezed by the baffle plate 30. The baffle plate 30 is rotated so that the baffle plate 30 completely covers the lifting rod 36, so that the lifting rod 36 moves downward, thereby driving the circular plate 37 to move downward, thereby compressing the spring 38, and at the same time, the brake plate 39 moves downward. The upper end of the wheel set 2 is located in the wheel groove 301, and a plurality of anti-skid strips 302 are provided on the wheel groove 301. The anti-skid strips 302 contact the wheel set 2 to generate a certain amount of friction. , so that the wheel set 2 cannot rotate, thereby achieving a certain braking effect, by rotating the two rocker arms 31 clockwise, the two threaded rods 33 rotate clockwise, the threaded rods 33 are threadedly connected with the lifting plate 34, thereby driving the lifting plate 34 to move downward, and the slide plate 32 has a limiting effect on the lifting plate 34, so that the lifting plate 34 can only be lifted, thereby making the anti-skid pad 35 contact the ground. The anti-skid pad 35 is hemispherical and made of a soft material. After contacting the ground, it will be squeezed to a certain extent, thereby achieving greater friction with the ground and achieving a better braking effect.

[0039] like Figure 4 As shown, a plurality of anti-skid pads 35 are fixedly connected to the bottom of the lifting plate 34 in a linear array, and the anti-skid pads 35 are hemispherical in shape.

[0040] It should be noted that the anti-skid pad 35 is hemispherical and made of a relatively soft material. When it contacts the ground, it will be squeezed to a certain extent, thereby achieving a greater friction with the ground and achieving a better braking effect.

[0041] like Figure 6 As shown, wheel grooves 301 are provided at the left and right positions of the bottom of the brake plate 39. The diameter of the wheel groove 301 is consistent with the diameter of the outer surface of the middle part of the wheel set 2, and a plurality of anti-slip strips 302 are fixedly connected to the surface of the wheel groove 301 in a linear array.

[0042] It should be noted that a plurality of anti-skid strips 302 are provided on the wheel groove 301 . The anti-skid strips 302 are in contact with the wheel set 2 , which can generate a certain friction, so that the wheel set 2 cannot rotate, thereby achieving a certain braking effect.

[0043] The working principle of the utility model is as follows: first, the bottom plate 1 is pushed to make the wheel set 2 arranged at the bottom rotate, so that the position of the whole can be adjusted. After moving to the appropriate position, the baffle plate 30 is rotated to make the baffle plate 30 contact the lifting rod 36. The upper end of the lifting rod 36 is spherical and can be well squeezed by the baffle plate 30. The baffle plate 30 is rotated so that the baffle plate 30 completely covers the lifting rod 36, so that the lifting rod 36 moves downward, thereby driving the circular plate 37 to move downward, thereby compressing the spring 38, and at the same time, the brake plate 39 moves downward, and the upper end of the wheel set 2 is located in the wheel groove 301. A plurality of anti-skid strips 302 are arranged on the wheel groove 301. The anti-skid strips 302 contact with the wheel set 2, which can generate a certain friction, so that the wheel set 2 cannot rotate, thereby achieving a certain braking effect, and by rotating the two rocking arms 31 clockwise, the two threaded rods 33 are rotated clockwise, and the threaded rods 33 are threadedly connected with the lifting plate 34, thereby bringing The movable lifting plate 34 moves downward, and the sliding plate 32 provided has a limiting effect on the lifting plate 34, so that the lifting plate 34 can only be lifted and lowered, thereby making the anti-skid pad 35 contact the ground. The anti-skid pad 35 provided is hemispherical and made of soft material. After contacting the ground, it will be squeezed to a certain extent, thereby achieving greater friction with the ground and achieving better braking effect. By starting the motor 45, the rotating shaft 401 rotates clockwise, thereby driving the multiple fan blades 402 to rotate clockwise. The fan blades 402 provided are inclined plate-shaped, which can provide more stable wind force when rotating. The fan blades 402 provided rotate slowly, so that the air below flows upward through the ventilation groove 46, and the outside air is sucked in through the connecting rod 41, and first contacts the dustproof net 44. The dustproof net 44 provided will adhere to the dust in the air, so that the degree of air pollution is further reduced, which is more helpful for inspection. Then the air will enter the sampling bottle 49 through the outlet pipe 48, thereby completing the sampling of the air.

[0044] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An air sampler for air detection, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a collecting mechanism (4), the left and right positions of the bottom of the bottom plate (1) are fixedly connected to wheel sets (2), and the left and right positions of the top of the bottom plate (1) are rotatably connected to braking mechanisms (3); The collection mechanism (4) comprises a connecting rod (41), the bottom of which is fixedly connected to the middle position of the top of the bottom plate (1), the top of which is fixedly connected to a collection sleeve (43), the top of which is fixedly connected to a plurality of air outlet pipes (48) in an annular array, the inner walls of the plurality of air outlet pipes (48) are movably connected to a plurality of sampling bottles (49), the inner wall of the collection sleeve (43) is fixedly connected to a fixing sleeve (47), and the A motor (45) is fixedly connected to the middle position of the top of the fixing sleeve (47), and the output end of the motor (45) passes through the top of the fixing sleeve (47) and is fixedly connected to a rotating shaft (401), and the bottom of the rotating shaft (401) is rotatably connected to the bottom of the inner wall of the fixing sleeve (47). A plurality of ventilation holes (42) are provided in a circular array at the lower position of the outer surface of the collection sleeve (43), and a plurality of ventilation grooves (46) are provided in a circular array on the upper and lower sides of the fixing sleeve (47); The braking mechanism (3) comprises two rocking arms (31) and two lifting rods (36), the lower ends of the two rocking arms (31) being rotatably connected to the left and right positions of the top of the base plate (1), the bottoms of the two rocking arms (31) passing through the top of the base plate (1) and being fixedly connected to a threaded rod (33), the outer surface of the threaded rod (33) being threadedly connected to a lifting plate (34), the top of the lifting plate (34) being fixedly connected to a slide plate (32), the outer surfaces of the two lifting rods (36) being movably connected to the left and right positions of the top of the base plate (1), the upper positions of the two lifting rods (36) being fixedly connected to a circular plate (37), the bottom of the circular plate (37) being fixedly connected to a spring (38), the bottoms of the two lifting rods (36) being fixedly connected to a braking plate (39), and the left and right positions of the top of the base plate (1) being rotatably connected to a baffle (30).

2. The air sampler for air detection according to claim 1, characterized in that: The outer surface of the rotating shaft (401) is fixedly connected with a plurality of fan blades (402) in an annular array, the fan blades (402) are in the shape of inclined plates, and the length of the fan blades (402) is smaller than the inner wall radius of the fixing sleeve (47).

3. The air sampler for air detection according to claim 1, characterized in that: The inner wall of the collection sleeve (43) is fixedly connected with a dustproof net (44), and the dustproof net (44) is located directly below the fixed sleeve (47), and the dustproof net (44) is located above the ventilation hole (42).

4. The air sampler for air detection according to claim 1, characterized in that: The four corners of the lower outer surface of the connecting rod (41) are all fixedly connected with fixing plates (40), and the fixing plates (40) are in a triangular inclined shape.

5. The air sampler for air detection according to claim 1, characterized in that: The bottom of the lifting plate (34) is fixedly connected with a plurality of anti-skid pads (35) in a linear array, and the anti-skid pads (35) are in a hemispherical shape.

6. The air sampler for air detection according to claim 1, characterized in that: Wheel grooves (301) are provided at the left and right positions of the bottom of the brake plate (39), the diameter of the wheel groove (301) is consistent with the diameter of the outer surface of the middle part of the wheel set (2), and the surface of the wheel groove (301) is fixedly connected with a plurality of anti-slip strips (302) in a linear array.

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