CN211954884U

CN211954884U - Air timing and fixed-point sampling equipment

Info

Publication number: CN211954884U
Application number: CN202020014174.4U
Authority: CN
Inventors: 唐斌; 汤送雄; 王美欢; 于云江; 林颖; 马艳
Original assignee: South China Institute of Environmental Science of Ministry of Ecology and Environment
Current assignee: South China Institute of Environmental Science of Ministry of Ecology and Environment
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-11-17
Anticipated expiration: 2030-01-02

Abstract

The utility model belongs to the technical field of air sampling equipment, in particular to air timing and fixed-point sampling equipment, which comprises a box body, a fan, a transfer mechanism, a sampling bottle clamping mechanism, a bottle cap opening and closing mechanism, an air pump suction and release mechanism and an air storage tank; the upper end and the lower end of the box body are respectively provided with an air inlet and an air outlet in a penetrating way, and the sampling bottle clamping mechanism comprises three groups of sampling bottle clamping assemblies which are arranged side by side; when sampling, the two fans operate to enable outside air to circularly flow into the box body, and the bottle cap opening and closing mechanism opens the bottle cap of the sampling bottle clamped on the sampling bottle clamping assembly; the air pump suction and release mechanism sucks air in the box body, and then the air is put into the sampling bottle for collection; at the moment, the bottle cap opening and closing mechanism seals the bottle cap on the sampling bottle after sampling, and sampling is completed. The sampling bottle clamping mechanism comprises three groups of sampling bottle clamping assemblies which are arranged side by side, and three sampling bottles clamped on the three sampling bottle clamping assemblies can be used for respectively collecting air in the morning, the middle and the evening of the day, and the operation is convenient.

Description

Air timing and fixed-point sampling equipment

Technical Field

The utility model belongs to the technical field of air sampling equipment, especially, relate to an air is sampling equipment of fixed point regularly.

Background

Air, a "life gas" that we breathe every day, is layered on the earth's surface, is transparent, colorless and odorless, is mainly composed of nitrogen and oxygen, and has an important influence on human survival and production, and air refers to a gas mixture in the earth's atmosphere.

With the increasing progress of industrial science and technology, pollution caused by the back of the industry is increased, and therefore sampling detection of air is needed. Currently, air is often collected by an air sampling device for subsequent analysis of the content of the components in the air by inspection. However, most of the existing air sampling devices can only sample air once, or when sampling air in the morning, in the middle of the day and in the evening, the sampler needs to be placed in the past air sampling device by people in the morning, in the middle of the day and in the evening to collect the air, which is not beneficial to the operation of operators.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air timing fixed point sampling equipment aims at solving among the prior art most of air sampling equipment single and can only carry out once air sampling, perhaps, when taking a sample to the air early, well, late on the day, all need personnel to place the sample thief in the past air sampling equipment in early, well, late time quantum and collect the air, is unfavorable for the technical problem of operating personnel operation.

In order to achieve the purpose, the embodiment of the utility model provides an air timing and fixed point sampling device, which comprises a box body, a fan, a transfer mechanism, a sampling bottle clamping mechanism, a bottle cap opening and closing mechanism, an air pump suction and release mechanism and an air storage tank; an air inlet and an air outlet are respectively arranged at the upper end and the lower end of the box body in a penetrating manner, and the fans are respectively arranged on the air inlet and the air outlet on the inner wall of the box body; the shifting mechanism is arranged at the inner bottom of the box body, the sampling bottle clamping mechanism is arranged on the shifting mechanism, the bottle cap opening and closing mechanism and the air pump suction and discharge mechanism are arranged at the inner top of the box body side by side, and the air storage tank is arranged at the lower end of the box body; the sampling bottle clamping mechanism comprises three groups of sampling bottle clamping assemblies which are arranged side by side; the sampling bottle clamping assembly comprises a clamping mounting plate, a clamping finger cylinder and a clamping block; the clamping mounting plate is mounted on the transfer mechanism, the clamping finger cylinder is horizontally mounted on the clamping mounting plate, the two clamping blocks are respectively mounted on two fingers of the clamping finger cylinder, and a clamping groove matched with the clamping sampling bottle is formed between the two clamping blocks; when sampling, the two fans operate to enable outside air to circularly flow into the box body, and the bottle cap opening and closing mechanism opens the bottle cap of the sampling bottle clamped on the sampling bottle clamping assembly; the air pump suction and release mechanism sucks air in the box body, and then the air is put into the sampling bottle for collection; at the moment, the bottle cap opening and closing mechanism seals the bottle cap on the sampling bottle after sampling, and sampling is completed.

Optionally, the bottle cap opening and closing mechanism comprises an opening and closing bottle cap mounting frame, an opening and closing bottle cap cylinder, an opening and closing bottle cap mounting plate, an opening and closing bottle cap finger cylinder and an opening and closing bottle cap block; the opening and closing bottle cap mounting frame is mounted at the inner top of the box body, the opening and closing bottle cap cylinder is vertically mounted on the opening and closing bottle cap mounting frame, the opening and closing bottle cap mounting plate is mounted on a driving rod of the opening and closing bottle cap cylinder, the opening and closing bottle cap finger cylinder is vertically mounted on the opening and closing bottle cap mounting plate, and the two opening and closing bottle cap blocks are respectively mounted on two fingers of the opening and closing bottle cap finger cylinder; and a clamping groove matched with the bottle cap is formed between the two opening and closing bottle cap blocks.

Optionally, the bottle cap opening and closing mechanism further comprises a first guide assembly; the first guide assembly comprises two first guide rods and two first guide sleeves; the two first guide sleeves are respectively installed on the opening and closing bottle cap mounting frames on two sides of the opening and closing bottle cap cylinder, the two first guide rods are respectively connected to the two first guide sleeves in a sliding mode, and the lower ends of the two first guide rods are connected with the opening and closing bottle cap mounting plate.

Optionally, an annular groove is dug in the middle of the bottle cap in the circumferential direction, clamping protrusions extend from the two bottle cap opening and closing blocks on the lower side of the clamping groove, and the two clamping protrusions are symmetrically arranged; when the bottle cap is clamped, the two clamping bulges are accommodated in the annular groove in a matching manner to clamp the bottle cap.

Optionally, the air pump sucking and releasing mechanism comprises a sucking and releasing mounting frame, a first driving cylinder, a second driving cylinder, a sucking and releasing mounting plate and a sucking and releasing air pump; the suction and discharge mounting frame is mounted at the inner top of the box body, the first driving cylinder is vertically mounted on the suction and discharge mounting frame, the second driving cylinder is vertically mounted on a driving rod of the first driving cylinder, the suction and discharge mounting plate is mounted at the lower end of the second driving cylinder, and the suction and discharge air pump is mounted at the lower end of the suction and discharge mounting plate through a plurality of connecting rods; the air suction and release pump comprises an air pump and a piston; the lower end of the air pump is provided with an air port communicated with the interior of the air pump; the piston is accommodated in the air pump and is in sealing connection with the inner wall of the air pump; and a push rod extends out of the upper end of the piston, movably penetrates through the top of the air pump, and is connected with the driving rod of the second driving cylinder.

Optionally, the air pump sucking and releasing mechanism further comprises a second guide assembly; the second guide assembly comprises two second guide rods and two second guide sleeves; the two second guide sleeves are respectively installed on the sucking and placing installation frame on two sides of the first driving cylinder, the two second guide rods are respectively connected to the two second guide sleeves in a sliding mode, and the lower ends of the two second guide rods are connected with the sucking and placing installation plate.

Optionally, the transfer mechanism comprises a transfer mounting rack, a linear guide rail, a screw rod, a motor and a transfer plate; the transfer mounting rack is horizontally arranged at the inner bottom of the box body, the two linear guide rails are horizontally arranged on the transfer mounting rack, and the screw rod is horizontally arranged on the transfer mounting rack between the two linear guide rails; the motor is arranged at one end of the transfer mounting frame, and a rotating shaft of the motor is fixedly connected with one end of the screw rod; the moving and carrying plate is arranged on the slide block of the linear guide rail and the screw rod block of the screw rod, and the three groups of sampling bottle clamping assemblies are arranged side by side on the moving and carrying plate.

Optionally, an "L" shaped air duct is provided at the air inlet at the upper end of the box body.

Optionally, an opening door is arranged on the front face of the box body, and the opening door is connected with the box body through a hinge.

Optionally, a support frame extends from the lower end of the box body.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the air timing fixed point sampling equipment have one of following technological effect at least: when sampling, the two fans operate to enable outside air to circularly flow into the box body, and the bottle cap opening and closing mechanism opens the bottle cap of the sampling bottle clamped on the sampling bottle clamping assembly; the air pump suction and release mechanism sucks air in the box body, and then the air is put into the sampling bottle for collection; at the moment, the bottle cap opening and closing mechanism seals the bottle cap on the sampling bottle after sampling, and sampling is completed. Sampling bottle clamping mechanism is including arranging three sampling bottle clamping components that set up side by side, three tight three on the sampling bottle clamping component the sampling bottle can be used for collecting the air early, well, evening on the day respectively, and operating personnel only need come evening and take away three sampling bottle, and the back is placed new sampling bottle and is gone up, need not all need personnel to place the sample thief in the past air sampling equipment in early, well, the night time period and collects the air, convenient operation, convenient. And three the sample bottle also all can be used for getting the air of a certain time, follow-up through check out test set to three sample bottle, gets the average value of three air detection result, makes the air detection result more accurate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the air timing and fixed point sampling device of the present invention.

Fig. 2 is the three-dimensional sectioning view of the air timing and fixed point sampling device of the utility model.

Fig. 3 is the schematic structural diagram of the transfer mechanism and the sampling bottle clamping mechanism of the air timing and fixed point sampling device of the present invention.

Fig. 4 is a schematic structural diagram of the bottle cap opening and closing mechanism of the air timing and fixed-point sampling device of the present invention.

Fig. 5 is a schematic structural view of the air pump sucking and releasing mechanism of the air timing and fixed point sampling device of the present invention.

Fig. 6 is a sectional view of the air pump sucking and releasing mechanism of the air timing and fixed point sampling device of the present invention.

Fig. 7 is a schematic structural diagram of the sampling bottle and the bottle cap of the present invention.

Wherein, in the figures, the respective reference numerals:

the box body 100, the L-shaped air duct 110, the opening door 120, the support frame 130, the blower 200, the transfer mechanism 300, the transfer mounting frame 310, the linear guide rail 320, the screw 330, the motor 340, the transfer plate 350, the sampling bottle clamping mechanism 400, the sampling bottle clamping assembly 400a, the clamping mounting plate 410, the clamping finger cylinder 420, the clamping block 430, the clamping groove 431, the bottle cap opening and closing mechanism 500, the bottle cap opening and closing mounting frame 510, the bottle cap opening and closing cylinder 520, the bottle cap opening and closing mounting plate 530, the bottle cap opening and closing finger cylinder 540, the bottle cap opening and closing block 550, the clamping groove 551, the clamping protrusion 552, the first guide assembly 560, the first guide bar 561, the first guide sleeve 562, the air pump suction and discharge mechanism 600, the suction and discharge mounting frame 610, the first driving cylinder 620, the second driving cylinder 630, the suction and discharge mounting plate 640, the suction and discharge air pump 650, the air pump 651, the air port 651a, the second guide rod 661, the second guide sleeve 662, the gas storage tank 700, the sampling bottle 800, the bottle cap 810, the annular groove 811 and the electric control device 900.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

The utility model discloses in, refer to fig. 1 and fig. 2, provide an air timing fixed point sampling equipment, include box 100, fan 200, move and carry mechanism 300, sampling bottle clamping mechanism 400, open and shut bottle lid mechanism 500, air pump suction and release mechanism 600 and gas holder 700.

Referring to fig. 2, an air inlet and an air outlet are respectively formed at the upper end and the lower end of the box body 100 in a penetrating manner, and the blower 200 is respectively installed at the air inlet and the air outlet on the inner wall of the box body 100. The inner bottom of the box body 100 is provided with the transfer mechanism 300, the sampling bottle clamping mechanism 400 is arranged on the transfer mechanism 300, the bottle cap opening and closing mechanism 500 and the air pump sucking and releasing mechanism 600 are arranged side by side at the inner top of the box body 100, and the air storage tank 700 is arranged at the lower end of the box body 100.

Referring to fig. 2 and 3, the sample vial clamping mechanism 400 includes three sets of sample vial clamping assemblies 400a arranged side-by-side. The sample bottle gripper assembly 400a includes a gripper mounting plate 410, a gripper finger cylinder 420, and a gripper block 430. The clamping mounting plate 410 is mounted on the transfer mechanism 300, the clamping finger cylinder 420 is horizontally mounted on the clamping mounting plate 410, the two clamping blocks 430 are respectively mounted on two fingers of the clamping finger cylinder 420, and a clamping groove 431 adapted to clamp the sampling bottle 800 is formed between the two clamping blocks 430. During sampling, the two fans 200 operate to make the external air circularly flow into the box body 100, and the bottle cap opening and closing mechanism 500 opens the bottle cap 810 of the sampling bottle 800 clamped on the sampling bottle clamping assembly 400. The air pump suction and release mechanism 600 sucks air in the box 100, and then the air is put into the sampling bottle 800 for collection. At this time, the bottle cap opening and closing mechanism 500 seals the bottle cap 810 on the sampling bottle 800 after sampling, thereby completing sampling. Because the three sampling bottles 800 clamped on the three sampling bottle clamping assemblies 400a can be used for respectively collecting the air in the morning, in the middle and in the evening, an operator only needs to take the three sampling bottles 800 in the evening and then place a new sampling bottle 800 on the sampling bottle, the situation that the air is collected by placing a sampler in the past air sampling equipment by the operator in the morning, in the middle and in the evening is not needed, and the operation is convenient and fast. In addition, three the sample bottle 800 also all can be used for getting the air of a certain time, follow-up through check out test set to three sample bottle 800 detects, gets the average value of three air detection result, makes the air detection result more accurate.

Referring to fig. 2 and 4, the open-close bottle cap mechanism 500 includes an open-close bottle cap mounting bracket 510, an open-close bottle cap cylinder 520, an open-close bottle cap mounting plate 530, an open-close bottle cap finger cylinder 540, and an open-close bottle cap block 550. The opening and closing bottle cap mounting frame 510 is mounted on the inner top of the box body 100, the opening and closing bottle cap cylinder 520 is vertically mounted on the opening and closing bottle cap mounting frame 510, the opening and closing bottle cap mounting plate 530 is mounted on the driving rod of the opening and closing bottle cap cylinder 520, the opening and closing bottle cap finger cylinder 540 is vertically mounted on the opening and closing bottle cap mounting plate 530, and the two opening and closing bottle cap blocks 550 are respectively mounted on two fingers of the opening and closing bottle cap finger cylinder 540. A clamping groove 551 which is matched with the bottle cap is formed between the two bottle cap opening and closing blocks 550. The bottle cap opening and closing cylinder 520 drives the bottle cap opening and closing finger cylinder 540 to move downwards, the bottle cap opening and closing finger cylinder 540 drives the two bottle cap opening and closing blocks 550 to approach each other to clamp the bottle cap 810, and the bottle cap 810 is fixedly clamped in the clamping groove 551. The bottle cap opening and closing cylinder 520 drives the bottle cap opening and closing finger cylinder 540 to move upwards, so that the bottle cap 810 is pulled out of the sampling bottle 800, and bottle opening is completed. The sampling bottle 800 filled with air by the air pump suction and release mechanism 600 is transplanted to the position under the bottle cap opening and closing mechanism 500 by the transfer mechanism 300. The bottle cap opening and closing cylinder 520 drives the bottle cap opening and closing finger cylinder 540 to move downwards to plug the bottle cap 810 into the bottle mouth of the sampling bottle 800 after sampling is finished in a sealing mode, the bottle cap opening and closing finger cylinder 540 drives the two bottle cap opening and closing blocks 550 to move away from each other to remove the clamped bottle cap 810, and sampling of the single sampling bottle 800 is finished.

Referring to fig. 4, an annular groove 811 is dug in the middle of the bottle cap 810, and clamping protrusions 552 extend from the two open/close bottle cap blocks 550 at the lower side of the clamping groove 551, and the two clamping protrusions 552 are symmetrically arranged. When the bottle cap 810 is clamped, the two clamping protrusions 552 are fittingly received in the annular groove 811 to clamp the bottle cap 810, so that the bottle cap 810 is clamped more firmly.

Referring to fig. 4, the opening and closing mechanism 500 further includes a first guide member 560. The first guide assembly 560 includes two first guide rods 561 and two first guide sleeves 562. The two first guide sleeves 562 are respectively installed on the opening and closing bottle cap mounting frame 510 on two sides of the opening and closing bottle cap cylinder 520, the two first guide rods 561 are respectively connected to the two first guide sleeves 562 in a sliding manner, and the lower ends of the two first guide rods 561 are connected with the opening and closing bottle cap mounting plate 530. The bottle cap opening and closing finger cylinder 540 is stably moved up and down along the first guide bar 561 by the first guide member 560.

Referring to fig. 2 and 5, the air pump suction and discharge mechanism 600 includes a suction and discharge mounting frame 610, a first driving cylinder 620, a second driving cylinder 630, a suction and discharge mounting plate 640, and a suction and discharge air pump 650. Inhale put mounting bracket 610 install in the interior top of box 100, the first vertical 620 of driving actuating cylinder install in inhale put on the mounting bracket 610, the second drive actuating cylinder 630 vertical install in on the first actuating lever that drives actuating cylinder 620, inhale put mounting panel 640 install in the lower extreme of second drive actuating cylinder 630, inhale put air pump 650 through many connecting rods 655 install in inhale put mounting panel 640 lower extreme. The air suction and release pump 650 includes an air pump 651 and a piston 652. The lower end of the air pump 651 is provided with an air port 651a communicated with the inside of the air pump. The piston 652 is accommodated in the air pump 651 and is hermetically connected to an inner wall of the air pump 651. A push rod 653 extends from the upper end of the piston 652, the push rod 653 movably passes through the top of the air pump 651, and the push rod 653 is connected to the driving rod of the second driving cylinder 630. When the air in the box 100 is pumped, the driving rod of the second driving cylinder 630 contracts to drive the piston 652 to move upwards, and the air in the box 100 is sucked into the air pump 651 from the air port 651a of the air pump 651. The first driving cylinder 620 drives the air pump 651 to move down, so that the air port 651a of the air pump 651 extends into the sampling bottle 800. The driving rod of the second driving cylinder 630 extends to drive the piston 652 to move downwards, so as to extrude the air in the air pump 651 and place the air into the sampling bottle 800, and then the first driving cylinder 620 drives the air suction and release pump 650 to move upwards, so that the air port 651a of the air pump 651 leaves the sampling bottle 800.

Referring to fig. 5, the air pump suction and discharge mechanism 600 further includes a second guide assembly 660. The second guide assembly 660 includes two second guide rods 661 and two second guide sleeves 662. The two second guide sleeves 662 are respectively installed on the sucking and placing installation frame 610 on two sides of the first driving cylinder 620, the two second guide rods 661 are respectively connected to the two second guide sleeves 662 in a sliding manner, and the lower ends of the two second guide rods 661 are connected to the sucking and placing installation frame 640. The suction/discharge air pump 650 is stably moved up and down along the second guide shaft 661 by the first guide assembly 660.

Referring to fig. 2 and 3, the transfer mechanism 300 includes a transfer mount 310, a linear guide 320, a lead screw 330, a motor 340, and a transfer plate 350. The transfer mounting rack 310 is horizontally mounted at the inner bottom of the box body 100, the two linear guide rails 320 are horizontally mounted on the transfer mounting rack 310, and the screw 330 is horizontally mounted on the transfer mounting rack 310 between the two linear guide rails 320. The motor 340 is installed at one end of the transfer mounting frame 310, and a rotating shaft of the motor 340 is fixedly connected with one end of the screw 330. The moving plate 350 is installed on the sliding blocks of the linear guide 320 and the screw blocks of the screw 330, and the three groups of the sampling bottle clamping assemblies 400a are installed on the moving plate 350 in parallel. During operation, the motor 340 drives the transfer plate 350 to move linearly along the linear guide rail 320 to drive the sampling bottle 800 on the transfer plate 350 to move under the opening and closing bottle cap mechanism 500 to open the bottle cap, then move under the air pump sucking and releasing mechanism 600 to feed air into the sampling bottle 800, then the transfer plate 350 drives the sampling bottle 800 filled with air to move on the opening and closing bottle cap mechanism 500, the bottle cap 810 is sealed on the sampling bottle 800 after sampling is completed by the opening and closing bottle cap mechanism 500, and finally, the transfer mechanism 300 drives the sampling bottle 800 after sampling to move on the initial position to complete sampling.

Referring to fig. 1 and 2, an L-shaped air duct 110 is provided at the air inlet at the upper end of the case 100. The L-shaped air duct 110 has a function of keeping off rain, and prevents rainwater from flowing into the box body 100.

Referring to fig. 1 and 2, an opening door 120 is provided on a front surface of the case body 100, and the opening door 120 is coupled to the case body 100 by a hinge. The box body 100 is opened by the opening door 120, so that the sampling bottle 800 can be conveniently taken or placed by a worker.

Referring to fig. 1 and 2, a support 130 extends from a lower end of the cabinet 100, and the cabinet 100 is stably placed on the ground through the support 130.

The clamping finger cylinder 420, the bottle cap opening and closing cylinder 520, the bottle cap opening and closing finger cylinder 540, the first driving cylinder 620 and the second driving cylinder 630 are connected with the air storage tank 700 through air pipes.

Referring to fig. 1 and 2, the air timed and fixed-point sampling device further includes an electric control device 900. The fan 200, the transfer mechanism 300, the sampling bottle clamping mechanism 400, the bottle cap opening and closing mechanism 500, the air pump suction and discharge mechanism 600 and the air storage tank 700 are electrically connected with the electric control device 900. In this embodiment, electrically controlled device 900 can adopt PLC or integrated chip to set up according to actual production needs, because electrically controlled device 900 belongs to technical shaping and ripe technique among the prior art, the event is right how electrically controlled device 900 controls the air is regularly taken a sample to carry out the work principle of timing and motion and should be familiar and can master for technical staff in the field, so the utility model discloses it is no longer repeated here to its control principle.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, its framework form can be nimble changeable, can derive series of products. But merely as a matter of simple deductions or substitutions, should be considered as belonging to the scope of patent protection of the present invention as determined by the claims submitted.

Claims

1. An air timing and fixed-point sampling device is characterized by comprising a box body, a fan, a transfer mechanism, a sampling bottle clamping mechanism, a bottle cap opening and closing mechanism, an air pump suction and release mechanism and an air storage tank; an air inlet and an air outlet are respectively arranged at the upper end and the lower end of the box body in a penetrating manner, and the fans are respectively arranged on the air inlet and the air outlet on the inner wall of the box body; the shifting mechanism is arranged at the inner bottom of the box body, the sampling bottle clamping mechanism is arranged on the shifting mechanism, the bottle cap opening and closing mechanism and the air pump suction and discharge mechanism are arranged at the inner top of the box body side by side, and the air storage tank is arranged at the lower end of the box body; the sampling bottle clamping mechanism comprises three groups of sampling bottle clamping assemblies which are arranged side by side; the sampling bottle clamping assembly comprises a clamping mounting plate, a clamping finger cylinder and a clamping block; the clamping mounting plate is mounted on the transfer mechanism, the clamping finger cylinder is horizontally mounted on the clamping mounting plate, the two clamping blocks are respectively mounted on two fingers of the clamping finger cylinder, and a clamping groove matched with the clamping sampling bottle is formed between the two clamping blocks; when sampling, the two fans operate to enable outside air to circularly flow into the box body, and the bottle cap opening and closing mechanism opens the bottle cap of the sampling bottle clamped on the sampling bottle clamping assembly; the air pump suction and release mechanism sucks air in the box body, and then the air is put into the sampling bottle for collection; at the moment, the bottle cap opening and closing mechanism seals the bottle cap on the sampling bottle after sampling, and sampling is completed.

2. An air timed site sampling apparatus according to claim 1, wherein: the bottle cap opening and closing mechanism comprises an opening and closing bottle cap mounting frame, an opening and closing bottle cap cylinder, an opening and closing bottle cap mounting plate, an opening and closing bottle cap finger cylinder and an opening and closing bottle cap block; the opening and closing bottle cap mounting frame is mounted at the inner top of the box body, the opening and closing bottle cap cylinder is vertically mounted on the opening and closing bottle cap mounting frame, the opening and closing bottle cap mounting plate is mounted on a driving rod of the opening and closing bottle cap cylinder, the opening and closing bottle cap finger cylinder is vertically mounted on the opening and closing bottle cap mounting plate, and the two opening and closing bottle cap blocks are respectively mounted on two fingers of the opening and closing bottle cap finger cylinder; and a clamping groove matched with the bottle cap is formed between the two opening and closing bottle cap blocks.

3. The air timed spot sampling apparatus according to claim 2, wherein: the bottle cap opening and closing mechanism further comprises a first guide assembly; the first guide assembly comprises two first guide rods and two first guide sleeves; the two first guide sleeves are respectively installed on the opening and closing bottle cap mounting frames on two sides of the opening and closing bottle cap cylinder, the two first guide rods are respectively connected to the two first guide sleeves in a sliding mode, and the lower ends of the two first guide rods are connected with the opening and closing bottle cap mounting plate.

4. The air timed spot sampling apparatus according to claim 2, wherein: an annular groove is dug in the middle of the bottle cap in the circumferential direction, clamping bulges extend from the two opening and closing bottle cap blocks on the lower side of the clamping groove, and the two clamping bulges are symmetrically arranged; when the bottle cap is clamped, the two clamping bulges are accommodated in the annular groove in a matching manner to clamp the bottle cap.

5. An air timed site sampling apparatus according to claim 1, wherein: the air pump sucking and releasing mechanism comprises a sucking and releasing mounting frame, a first driving cylinder, a second driving cylinder, a sucking and releasing mounting plate and a sucking and releasing air pump; the suction and discharge mounting frame is mounted at the inner top of the box body, the first driving cylinder is vertically mounted on the suction and discharge mounting frame, the second driving cylinder is vertically mounted on a driving rod of the first driving cylinder, the suction and discharge mounting plate is mounted at the lower end of the second driving cylinder, and the suction and discharge air pump is mounted at the lower end of the suction and discharge mounting plate through a plurality of connecting rods; the air suction and release pump comprises an air pump and a piston; the lower end of the air pump is provided with an air port communicated with the interior of the air pump; the piston is accommodated in the air pump and is in sealing connection with the inner wall of the air pump; and a push rod extends out of the upper end of the piston, movably penetrates through the top of the air pump, and is connected with the driving rod of the second driving cylinder.

6. An air timed site sampling apparatus according to claim 5, wherein: the air pump sucking and releasing mechanism also comprises a second guide component; the second guide assembly comprises two second guide rods and two second guide sleeves; the two second guide sleeves are respectively installed on the sucking and placing installation frame on two sides of the first driving cylinder, the two second guide rods are respectively connected to the two second guide sleeves in a sliding mode, and the lower ends of the two second guide rods are connected with the sucking and placing installation plate.

7. An air timed site sampling device according to any of claims 1 to 6, wherein: the transfer mechanism comprises a transfer mounting frame, a linear guide rail, a screw rod, a motor and a transfer plate; the transfer mounting rack is horizontally arranged at the inner bottom of the box body, the two linear guide rails are horizontally arranged on the transfer mounting rack, and the screw rod is horizontally arranged on the transfer mounting rack between the two linear guide rails; the motor is arranged at one end of the transfer mounting frame, and a rotating shaft of the motor is fixedly connected with one end of the screw rod; the moving and carrying plate is arranged on the slide block of the linear guide rail and the screw rod block of the screw rod, and the three groups of sampling bottle clamping assemblies are arranged side by side on the moving and carrying plate.

8. An air timed site sampling device according to any of claims 1 to 6, wherein: an L-shaped air duct is arranged at the air inlet at the upper end of the box body.

9. An air timed site sampling device according to any of claims 1 to 6, wherein: the front of the box body is provided with an opening door, and the opening door is connected with the box body through a hinge.

10. An air timed site sampling device according to any of claims 1 to 6, wherein: the lower end of the box body extends to form a support frame.