CN115541320A

CN115541320A - Air sampling device

Info

Publication number: CN115541320A
Application number: CN202211191919.4A
Authority: CN
Inventors: 张利益; 刘作涛; 赵子豪; 张凯莉; 赵敏辉
Original assignee: Zhejiang Huabiao Testing Technology Co ltd
Current assignee: Zhejiang Huabiao Testing Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-30

Abstract

The invention relates to the technical field of environment detection equipment, in particular to an air sampling device which comprises a rack and a cavity, wherein the lower end of the cavity is rotatably arranged in the rack, a bottom plate is fixedly arranged at the bottom in the cavity, a plurality of air inlet pipes distributed in a circumferential array are fixedly arranged on the outer side of the cavity, and the air inlet pipes are communicated with the interior of the cavity. The cavity is internally provided with an annular support plate, the surface of the annular support plate is provided with a plurality of air holes which are uniformly distributed, the outer side of the annular support plate is wrapped and fixedly connected with an adsorption medium, the bottom of the bottom plate is fixedly provided with an air pump, and an air inlet pipe of the air pump is communicated with the cavity. Air in the cavity is absorbed through the air pump and the cavity is in a negative pressure state, external air can be sucked into the cavity through the air inlet pipe, the relative positions of the adsorption medium and the air inlet pipe are adjusted through rotating the adsorption medium, therefore, different positions on the adsorption medium can be used for adsorbing pollutants, and the utilization rate of the adsorption medium is effectively improved.

Description

Air sampling device

Technical Field

The invention relates to the technical field of environment detection equipment, in particular to an air sampling device.

Background

The atmospheric sampling is a process for collecting a pollutant sample or a polluted air sample in the atmosphere, so as to obtain basic data of atmospheric pollution. Atmospheric sampling is an important step of atmospheric environment monitoring, and has a great reliability relation to monitoring data. The existing air sampling device is used for adsorbing and collecting pollutants in the air by the air suction device and the solid adsorbent, so that the original pollutants with lower concentration in the atmosphere can be enriched.

Disclosure of Invention

The invention aims to solve the problem that the utilization rate of a solid adsorbent in an air sampling device is low in the prior art, and provides the air sampling device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the design is an air sampling device, which comprises a frame and a cavity, wherein the lower end of the cavity is rotatably installed in the frame, a bottom plate is fixedly installed at the bottom in the cavity, a plurality of air inlet pipes which are distributed in a circumferential array are fixedly installed at the outer side of the cavity, and the air inlet pipes are communicated with the inside of the cavity.

The cavity is internally provided with an annular support plate, a plurality of air holes which are uniformly distributed are formed in the surface of the annular support plate, the outer side of the annular support plate is wrapped by and fixedly connected with an adsorption medium, an air pump is fixedly arranged at the bottom of the bottom plate, and an air inlet pipe of the air pump is communicated with the cavity.

Preferably, the adsorption medium is annular, and the adsorption medium further comprises a sealing cover, wherein the sealing cover can seal the upper port of the cavity, and is fixedly connected with a handle.

Preferably, a plurality of limiting rods distributed in a circumferential array are fixedly mounted at the bottom of the annular support plate, a connecting mechanism is arranged in the cavity, the connecting mechanism is mounted on the bottom plate, and the limiting rods can be inserted into the connecting mechanism.

Preferably, coupling mechanism includes the annular support plate, the annular support plate links firmly in the cavity, the annular support plate is located between bottom plate and the gag lever post, rotatable the installing in annular support plate top has the annular seat, a plurality of spacing holes have been seted up at annular seat top, the gag lever post can insert spacing downthehole respectively.

Preferably, the connecting mechanism further comprises a first motor and a plurality of connecting rods, the first motor is fixedly connected to the bottom of the base plate, an output shaft of the first motor penetrates through the base plate, and two ends of each connecting rod are fixedly connected to an output shaft of the first motor and the annular seat respectively.

Preferably, the lower pot head of cavity outside is established and fixed mounting has the ring gear, rotatable gear of installing in the frame, gear and ring gear meshing, external drive device with the gear links to each other and can drive the gear rotation.

Preferably, the cavity outside is provided with a plurality of sealing mechanism that are circumference array distribution, sealing mechanism includes the sealing member, the sealing member can seal the intake pipe, sealing member upper end fixed mounting has the montant that two intervals set up, the cavity is run through to the montant upper end, fixed mounting has the rack on the sealing member, rotatable the installing of pivot on the cavity, fixed mounting has the action wheel in the pivot, driving wheel and rack toothing, adjacent two install universal joint between the pivot, adjacent two accessible universal joint transmission between the pivot, pivot one end fixed mounting has first drive wheel, fixed mounting has the second motor on the cavity, the output shaft fixed mounting of second motor has the second drive wheel, the second drive wheel meshes with first drive wheel.

The air sampling device provided by the invention has the beneficial effects that: the air pump is used for absorbing air in the cavity and enabling the cavity to be in a negative pressure state, external air can be sucked into the cavity through the air inlet pipe, the sucked air passes through the adsorption medium, pollutants in the air are adsorbed on the adsorption medium, the adsorption medium can be driven to rotate by rotating the annular carrier plate, and the relative position of the adsorption medium and the air inlet pipe is adjusted by rotating the adsorption medium, so that the pollutants can be adsorbed at different positions on the adsorption medium, and the utilization rate of the adsorption medium is effectively improved;

the annular support plate can be placed in the cavity by opening the sealing cover, the limiting rods are inserted into the limiting holes, a sample on the annular support plate can be taken out conveniently after sampling is finished, and meanwhile, an adsorption medium on the annular support plate can be replaced conveniently;

through setting up sealing mechanism, can drive the port of the sealed intake pipe of sealing member or leave the port of intake pipe, after the sample was accomplished, at the in-process of transportation sample, the port of the sealed intake pipe of sealing member can avoid in all the other air admission cavities and with the adsorption medium contact, can avoid the sample contaminated.

Drawings

Fig. 1 is a schematic structural diagram of an air sampling device according to the present invention.

Fig. 2 is an enlarged schematic view of an air sampling device according to the present invention at a point a in fig. 1.

Fig. 3 is a cross-sectional view of an air sampling device in accordance with the present invention.

Fig. 4 is a side view of an air sampling device in accordance with the present invention.

In the figure: the device comprises a rack 1, a cavity 2, a bottom plate 3, an air inlet pipe 4, an annular carrier plate 5, an adsorption medium 6, a sealing cover 7, a limiting rod 8, an annular supporting plate 9, an annular seat 10, a limiting hole 11, a first motor 12, a connecting rod 13, an air pump 14, a gear ring 15, a gear 16, a sealing element 17, a vertical rod 18, a rack 19, a rotating shaft 20, a driving wheel 21, a universal coupling 22, a first driving wheel 23, a second motor 24 and a second driving wheel 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1:

referring to fig. 1-4, an air sampling device comprises a frame 1 and a cavity 2, wherein the lower end of the cavity 2 is rotatably installed in the frame 1, a bottom plate 3 is fixedly installed at the bottom of the cavity 2, a plurality of air inlet pipes 4 distributed in a circumferential array are fixedly installed on the outer side of the cavity 2, and the air inlet pipes 4 are communicated with the interior of the cavity 2. An annular carrier plate 5 is arranged in the cavity 2, a plurality of air holes are uniformly distributed in the surface of the annular carrier plate 5, an adsorption medium 6 wraps and is fixedly connected to the outer side of the annular carrier plate 5, an air pump 14 is fixedly mounted at the bottom of the bottom plate 3, and an air inlet pipe of the air pump 14 is communicated with the interior of the cavity 2. Air in the cavity 2 is absorbed by the air pump 14, the cavity 2 is in a negative pressure state, external air can be absorbed into the cavity 2 through the air inlet pipe 4, the absorbed air passes through the adsorption medium 6, and pollutants in the air are adsorbed on the adsorption medium 6.

The adsorption medium 6 is annular, the adsorption medium further comprises a sealing cover 7, the sealing cover 7 can seal an upper port of the cavity 2, a handle is fixedly connected to the sealing cover 7, a gear ring 15 is sleeved and fixedly mounted at the lower end of the outer side of the cavity 2, a gear 16 is rotatably mounted on the rack 1 and meshed with the gear ring 15, and an external driving device is connected with the gear 16 and can drive the gear 16 to rotate. The upper port of the cavity 2 is sealed by the sealing cover 7 in the adsorption process, the gear 16 rotates by the driving gear 16, the gear 16 drives the gear ring 15 to rotate, the cavity 2 and the gear ring 15 can synchronously rotate, the cavity 2 is driven to rotate, and the orientation of the plurality of air inlet pipes 4 can be adjusted.

The working principle is as follows: through the last port of sealed lid 7 seal chamber body 2, absorb the air in the cavity 2 and make cavity 2 be in the negative pressure state through air pump 14, outside air can be by intake pipe 4 inhale in the cavity 2, inhaled air is through adsorption medium 6, pollutant in the air is adsorbed on adsorption medium 6, can drive adsorption medium 6 through rotating annular support plate 5 and rotate, adjust the relative position of adsorption medium 6 and intake pipe 4 through rotating adsorption medium 6, thereby different positions on adsorption medium 6 all can with the adsorbed pollutant, effectively improve adsorption medium's utilization ratio.

Example 2:

referring to fig. 1-4, as another preferred embodiment of the present invention, the difference from embodiment 1 is that a plurality of limit rods 8 distributed in a circumferential array are fixedly installed at the bottom of the annular carrier plate 5, a connecting mechanism is disposed in the cavity 2, the connecting mechanism is installed on the bottom plate 3, and the limit rods 8 can be inserted into the connecting mechanism. Coupling mechanism includes annular support plate 9, and annular support plate 9 links firmly in cavity 2, and annular support plate 9 is located between bottom plate 3 and the gag lever post 8, and rotatable the installing in annular support plate 9 top has annular seat 10, and a plurality of spacing holes 11 have been seted up at annular seat 10 top, and gag lever post 8 can insert respectively in the spacing hole 11. Can put into cavity 2 with annular carrier plate 5 through opening sealed lid 7, and gag lever post 8 all inserts in spacing hole 11, can be convenient for take out the sample on the annular carrier plate 5 after the sample, also can be convenient simultaneously change adsorption medium 6 on the annular carrier plate 5.

The connecting mechanism further comprises a first motor 12 and a plurality of connecting rods 13, the first motor 12 is fixedly connected to the bottom of the base plate 3, an output shaft of the first motor 12 penetrates through the base plate 3, and two ends of each connecting rod 13 are fixedly connected to an output shaft of the first motor 12 and the annular seat 10 respectively. The connecting rod 13 can be driven by the first motor 12 to rotate, and the connecting rod 13 rotates synchronously with the annular seat 10 and the annular carrier plate 5 in the cavity 2.

Because the back is accomplished in the sample, in the in-process of transportation sample, need avoid in the cavity 2 all the other air admission and with adsorption medium 6 contact, the cavity 2 outside is provided with a plurality of sealing mechanism that are circumference array distribution, sealing mechanism includes sealing member 17, sealing member 17 can seal intake pipe 4, sealing member 17 upper end fixed mounting has two montants 18 that the interval set up, cavity 2 is run through to montant 18 upper end, fixed mounting has rack 19 on the sealing member 17, rotatable mounting has pivot 20 on the cavity 2, fixed mounting has action wheel 21 on the pivot 20, action wheel 21 and rack 19 mesh, install universal joint 22 between two adjacent pivots 20, accessible universal joint 22 transmission between two adjacent pivots 20, pivot 20 one end fixed mounting has first drive wheel 23, fixed mounting has second motor 24 on the cavity 2, the output shaft fixed mounting of second motor 24 has second drive wheel 25, second drive wheel 25 and first drive wheel 23 mesh. The second motor 24 drives the second transmission wheel 25 to rotate, the second transmission wheel 25 drives the first transmission wheel 23 to rotate, one of the rotating shafts 20 rotates, the driving wheel 21 on the rotating shaft 20 rotates and drives the rack 19 to move, and therefore the sealing element 17 is driven to seal the port of the air inlet pipe 4 or leave the port of the air inlet pipe 4.

The working principle is as follows: can put into cavity 2 with annular carrier plate 5 through opening sealed lid 7, and gag lever post 8 all inserts in spacing hole 11, can be convenient for take out the sample on the annular carrier plate 5 after the sample, also can be convenient simultaneously change adsorption medium 6 on the annular carrier plate 5. The connecting rod 13 can be driven by the first motor 12 to rotate, and the connecting rod 13 rotates synchronously with the annular seat 10 and the annular carrier plate 5 in the cavity 2. The second motor 24 drives the second driving wheel 25 to rotate, the second driving wheel 25 drives the first driving wheel 23 to rotate, one of the rotating shafts 20 rotates, the driving wheel 21 on the rotating shaft 20 rotates and drives the rack 19 to move, so that the sealing element 17 is driven to seal the port of the air inlet pipe 4 or leave the port of the air inlet pipe 4, after sampling is completed, in the process of transporting a sample, the port of the sealing element 17 sealing the air inlet pipe 4 can prevent other air from entering the cavity 2 and contacting with the adsorption medium 6, and the sample can be prevented from being polluted.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The air sampling device is characterized by comprising a rack (1) and a cavity (2), wherein the lower end of the cavity (2) is rotatably arranged in the rack (1), a bottom plate (3) is fixedly arranged at the bottom in the cavity (2), a plurality of air inlet pipes (4) distributed in a circumferential array manner are fixedly arranged on the outer side of the cavity (2), and the air inlet pipes (4) are communicated with the interior of the cavity (2);

be equipped with annular support plate (5) in cavity (2), a plurality of evenly distributed's bleeder vent has been seted up on annular support plate (5) surface, annular support plate (5) outside parcel and fixedly connected with adsorption medium (6), bottom plate (3) bottom fixed mounting has air pump (14), communicate in the intake pipe of air pump (14) and cavity (2).

2. The air sampling device according to claim 1, wherein the adsorption medium (6) is configured in a ring shape, and further comprises a sealing cover (7), the sealing cover (7) can seal the upper port of the cavity (2), and a handle is fixedly connected to the sealing cover (7).

3. The air sampling device according to claim 1, wherein a plurality of limit rods (8) distributed in a circumferential array are fixedly installed at the bottom of the annular carrier plate (5), a connecting mechanism is arranged in the cavity (2), the connecting mechanism is installed on the bottom plate (3), and the limit rods (8) can be inserted into the connecting mechanism.

4. The air sampling device according to claim 3, wherein the connecting mechanism comprises a ring-shaped supporting plate (9), the ring-shaped supporting plate (9) is fixedly connected in the cavity (2), the ring-shaped supporting plate (9) is located between the bottom plate (3) and the limiting rod (8), an annular seat (10) is rotatably installed at the top of the ring-shaped supporting plate (9), a plurality of limiting holes (11) are formed in the top of the annular seat (10), and the limiting rods (8) can be respectively inserted into the limiting holes (11).

5. The air sampling device according to claim 4, wherein the connection mechanism further comprises a first motor (12) and a plurality of connection rods (13), the first motor (12) is fixedly connected to the bottom of the base plate (3), an output shaft of the first motor (12) penetrates through the base plate (3), and two ends of each connection rod (13) are fixedly connected to the output shaft of the first motor (12) and the annular seat (10), respectively.

6. The air sampling device according to claim 1, wherein a gear ring (15) is sleeved and fixedly mounted at the lower end of the outer side of the cavity (2), a gear (16) is rotatably mounted on the frame (1), the gear (16) is meshed with the gear ring (15), and an external driving device is connected with the gear (16) and can drive the gear (16) to rotate.

7. The air sampling device of claim 1, characterized in that, cavity (2) outside is provided with a plurality of sealing mechanism that are circumference array distribution, sealing mechanism includes sealing member (17), intake pipe (4) can be sealed in sealing member (17), sealing member (17) upper end fixed mounting has montant (18) that two intervals set up, cavity (2) is run through to montant (18) upper end, fixed mounting has rack (19) on sealing member (17), rotatable mounting has pivot (20) on cavity (2), fixed mounting has action wheel (21) on pivot (20), action wheel (21) and rack (19) meshing, adjacent two install universal joint (22) between pivot (20), adjacent two accessible universal joint (22) transmission between pivot (20), pivot (20) one end fixed mounting has first drive wheel (23), fixed mounting has second motor (24) on cavity (2), second drive wheel (25) are installed to the output shaft of second motor (24), second drive wheel (25) and first drive wheel (23) meshing.