CN220207211U

CN220207211U - Vacuum box for air sampling and vacuum box air sampler

Info

Publication number: CN220207211U
Application number: CN202322359017.3U
Authority: CN
Inventors: 佟海波; 朱晓艳
Original assignee: Linyi Inspection And Testing Center
Current assignee: Linyi Inspection And Testing Center
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2023-12-19
Anticipated expiration: 2033-08-31

Abstract

The utility model discloses a vacuum box for air sampling and an air sampler of the vacuum box, and belongs to the technical field of air sampling equipment. The vacuum box air sampler solves the defect that the air sampling is inconvenient to be carried out at intervals when the vacuum box air sampler is adopted to sample air in an outdoor severe environment at present. The novel vacuum box mainly comprises a box body, wherein a partition plate is arranged in the box body, the box body is divided into at least two independent vacuum chambers by the partition plate, a box cover is arranged on the box body, exhaust ports are respectively formed in corresponding positions of each vacuum chamber in the box cover, the exhaust ports are connected with exhaust pipes arranged at the tops of the box covers, exhaust valves are arranged on the exhaust pipes and are connected with a main pipe, an exhaust connector is arranged on the main pipe, an air inlet is formed in each vacuum chamber by the box body, air inlet connectors are respectively arranged on two sides of the air inlet by the box body, and air inlet valves are arranged on the air inlet connectors outside the box body.

Description

Vacuum box for air sampling and vacuum box air sampler

Technical Field

The utility model belongs to the technical field of air sampling equipment, and particularly relates to a vacuum box for air sampling and a vacuum box air sampler.

Background

The outdoor air can be sampled by adopting a direct sampling method and a concentrated sampling method. The direct sampling method is a sampling method in which an air sample is directly collected in a suitable air collector and brought back to laboratory analysis. The results measured by the direct sampling method may represent the average concentration in the air instantaneously or in a short time, and may be classified into a syringe sampling method, a plastic bag sampling method, a substitution sampling method, a vacuum sampling method, and the like.

Current vacuum sampling methods can use a vacuum box air sampler to passively draw the source of pollution exhaust gas or ambient air into the air pockets within the vacuum box. Compared with the traditional air sampler, the passive sampling mode of the vacuum box air sampler is adopted, samples directly enter the air bag without a sampling pump, the sample is free from pollution and loss, the sampling efficiency and the quality are higher, and the air sampler has the advantages of simplicity in operation, large sampling flow, good sealing performance and the like. As shown in figure 6, the vacuum box air sampler mainly comprises a vacuum box and an air pump, wherein an air bag is arranged in the vacuum box, an air outlet and an air inlet are formed in the vacuum box, the air pump is connected with the air outlet and pumps air from the vacuum box, the air bag is connected with the inner end of the air inlet, the outer end of the air inlet is connected with air outside the box, and the air pump is used for pumping air from the vacuum box. The vacuum box air sampler can rapidly sample air outside the vacuum box, but the collected sample generally only represents the concentration at a certain time point, and sometimes needs to sample the air outside the vacuum box at intervals continuously so as to measure the average concentration of the air in a certain time period, for example, the air is detected for many times at intervals of one hour or half hour in the morning, but due to the fact that sometimes the sampling environment is severe, for example, in malodor, volatile halogenated hydrocarbon environment and the like, a detector cannot conveniently enter a detection place for a long time or many times, the current vacuum box air sampler cannot automatically sample the air at intervals continuously, so that the current vacuum box air sampler is inconvenient to sample the air at intervals when the vacuum box air sampler is adopted for sampling the air in the outdoor severe environment.

Disclosure of Invention

The utility model aims to provide a vacuum box for air sampling and a vacuum box air sampler, which are used for overcoming the defect that the vacuum box air sampler is inconvenient to continuously sample at intervals when the vacuum box air sampler is adopted to sample air in an outdoor severe environment in the prior art.

The utility model adopts the following technical scheme that the vacuum box for air sampling comprises a box body, wherein a partition plate is arranged in the box body, the box body is divided into at least two independent vacuumizing chambers by the partition plate, a box cover is arranged on the box body, the box cover is respectively provided with an exhaust port at the corresponding position of each vacuumizing chamber, the exhaust port is connected with an exhaust pipe arranged at the top of the box cover, an exhaust valve is arranged on the exhaust pipe, the exhaust pipe is connected with a main pipe, an exhaust connector is arranged on the main pipe, an air inlet is arranged on each vacuumizing chamber, air inlet connectors are respectively arranged on two sides of the air inlet of the box body, and an air inlet valve is arranged on the air inlet connector outside the box body.

Further, the box body is divided into four independent vacuumizing chambers by a partition plate, two sides of the main pipe are respectively connected with exhaust holes of the three-way pipe, and two air inlet holes of the three-way pipe are respectively connected with an exhaust pipe of the vacuumizing chamber.

Further, sealing rings are arranged between the box cover and the box body and between the box cover and the partition plate.

Further, the case cover is fixedly arranged on the case body through a hasp.

Further, a handle is arranged on the box cover.

The utility model provides a vacuum box air sampler, includes above-mentioned vacuum box for air sampling, still includes the controller, exhaust connector passes through first connecting pipe and connects the aspiration pump, every in the evacuation room all set up the air pocket, the air pocket passes through the air inlet connector in the second connecting pipe connection box, installs the air pocket valve on the air pocket, exhaust valve, air inlet valve and aspiration pump connect the controller respectively.

Further, an air inlet pipe is connected to an air inlet connector outside the box body.

Further, the display device also comprises a camera which is connected with the display device in a wireless way.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model can realize automatic continuous interval sampling when air sampling is carried out in an outdoor severe environment, does not need a detector to enter and exit a detection place for a long time or for a plurality of times, ensures the safety of the detector, saves the time of the detector and reduces the detection cost.

Drawings

FIG. 1 is a schematic diagram of a vacuum box for air sampling according to the present utility model;

fig. 2 is a top view of the case 1 according to the present utility model;

fig. 3 is a perspective view of the case cover 4 according to the present utility model;

FIG. 4 is a schematic diagram of a vacuum box air sampler according to the present utility model;

fig. 5 is a plan view of the case 1 with the air bag 17 mounted therein according to the present utility model;

fig. 6 is a schematic diagram of a vacuum box air sampler in the prior art.

In the figure: 1. a case; 2. a partition plate; 3. a vacuum pumping chamber; 4. a case cover; 5. an exhaust port; 6. an exhaust pipe; 7. an exhaust valve; 8. a header pipe; 9. an exhaust connector; 10. an air inlet; 11. an air inlet connector; 12. an air inlet valve; 13. a three-way pipe; 14. a hasp; 15. a handle; 16. a first connection pipe; 17. an air bag; 18. a second connection pipe; 19. an air bag valve; 20. an air inlet pipe; 21. and an air pump.

Detailed Description

In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

The utility model provides a vacuum box for air sampling, includes box 1, install baffle 2 in the box 1, be separated into two at least independent evacuation rooms 3 by baffle 2 in the box 1, install case lid 4 on the box 1, case lid 4 respectively with box 1 and baffle 2 cooperation, case lid 4 sets up gas vent 5 in the corresponding position of every evacuation room 3 respectively, the blast pipe 6 at the top of case lid 4 is set up in the connection of gas vent 5, install exhaust valve 7 on the blast pipe 6, blast pipe 6 connects house steward 8, install exhaust connector 9 on the house steward 8, air inlet 10 is seted up on every evacuation room 3 to box 1, air inlet connector 11 is installed respectively to the both sides of air inlet 10 in box 1, install air inlet valve 12 on the air inlet connector 11 outside the box 1.

According to the utility model, the partition board 2 and the box body 1 are integrally formed, the top surface of the box body 1 is flush with the top surface of the partition board 2, the box cover 4 covers the top surfaces of the box body 1 and the partition board 2, and the plurality of vacuumizing chambers 3 in the box body 1 are sealed, so that the plurality of vacuumizing chambers 3 in the box body 1 are mutually independent; the exhaust connector 9 is connected with an air pump 21 through a first connecting pipe 16, and different vacuumizing chambers 3 are vacuumized by opening and closing different exhaust valves 7; the air inlet 10 is formed at the lower side of the vacuum chamber, the air inlet connector 11 in the box body 1 is connected with the air bag 17, the air inlet connector 11 outside the box body 1 is connected with the air inlet pipe 20, and one end of the air inlet pipe 20 can be placed in a proper area; according to the utility model, the plurality of vacuumizing chambers 3 are arranged, and the plurality of vacuumizing chambers 3 can sequentially perform vacuumizing operation at intervals; the exhaust valve 7 and the air inlet valve 12 are normally closed valves, and the exhaust valve 7 and the air inlet valve 12 are connected with and controlled by a controller.

The inside of the box body 1 is divided into four independent vacuumizing chambers 3 by the partition plates 2, two sides of the main pipe 8 are respectively connected with exhaust holes of the three-way pipe 13, and two air inlet holes of the three-way pipe 13 are respectively connected with an exhaust pipe 6 of the vacuumizing chamber 3.

According to the utility model, two independent vacuumizing chambers 3 are divided into two groups, the exhaust pipes 6 corresponding to the two vacuumizing chambers 3 in each group are respectively connected with the air inlet holes of a three-way pipe 13, and the three-way pipe 13 can adopt two three-way pipes 13, so that the exhaust valve 7 is arranged on the exhaust pipe 6 corresponding to each vacuumizing chamber 3.

Sealing rings are arranged between the box cover 4 and the box body 1 and between the box cover 4 and the partition plate 2.

The sealing ring is arranged, so that the tightness between the box cover 4 and the box body 1 and the partition plate 2 can be enhanced.

The case cover 4 is fixedly arranged on the case body 1 through a hasp 14.

The cover 4 is provided with a handle 15.

The utility model provides a vacuum box air sampler, includes above-mentioned vacuum box for air sampling, still includes the controller, exhaust connector 9 passes through first connecting pipe 16 and connects aspiration pump 21, every all set up air pocket 17 in the evacuation room 3, air pocket 17 passes through the air inlet connector 11 in the second connecting pipe 18 connection box 1, installs air pocket valve 19 on the air pocket 17, exhaust valve 7, air inlet valve 12 and aspiration pump 21 connect the controller respectively.

According to the utility model, the air bag 17 can adopt an aluminum foil air bag 17, and air to be detected outside the box body 1 enters the air bag 17 through a second connecting pipe 18; the portable power source is used for supplying power to the portable power source.

An air inlet pipe 20 is connected to an air inlet connector 11 outside the box body 1.

One end of the air inlet pipe 20 of the present utility model may be placed in a suitable area.

Still include the camera, camera wireless connection display device.

The display equipment can be a mobile phone or a computer, and the like, and a detector can remotely monitor the air sampling process in real time through the camera, and the camera can be arranged on the fixed support to fix the fixed support at a proper position during detection.

The working process of the utility model comprises the following steps:

when sampling is carried out, firstly, respectively placing air bags 17 into four vacuumizing chambers 3, connecting the air bags 17 with an air inlet connector 11 of the vacuumizing chamber 3 in a box body 1 through a second connecting pipe 18, enabling the vacuum box not to exchange air with the outside of the box body 1 through an air inlet 10, fastening a box cover 4, locking and sealing the box body 1 through a hasp 14, enabling a plurality of vacuumizing chambers 3 in the box body 1 to be mutually independent, exhausting the vacuumizing chambers 3 only through corresponding exhaust pipes 6 on the box cover 4, then placing the vacuum chamber to a place to be detected, fixing a camera at a proper position, enabling the camera to monitor a sampling process in real time, starting an air pump 21, setting the four vacuumizing chambers 3 to continuously sample air at intervals for a certain time through a controller, sequentially setting the four vacuumizing chambers 3 into a first vacuumizing chamber 3, a second vacuumizing chamber 3, a third vacuumizing chamber 3 and a fourth vacuumizing chamber 3 according to sampling sequence, when the controller controls the first vacuumizing chamber 3 to sample, the exhaust valve 7 and the air inlet valve 12 corresponding to the first vacuumizing chamber 3 are opened, the exhaust valve 7 and the air inlet valve 12 on the other vacuumizing chambers 3 are closed, the air pump 21 starts to vacuumize the first vacuumizing chamber 3, air outside the box body 1 enters the air pocket 17 in the first vacuumizing chamber 3 through the second connecting pipe 18 due to the gradual decrease of the air pressure in the first vacuumizing chamber 3, when the air pump 21 is opened for a certain time, the exhaust valve 7 and the air inlet valve 12 corresponding to the air pump 21 and the first vacuumizing chamber 3 are closed, at the moment, the air pocket 17 in the first vacuumizing chamber is filled with air to be detected, the air pocket 17 is not leaked due to the closing of the air inlet valve 12, and after a certain time, the controller controls the second vacuumizing chamber 3 to sample, the exhaust valve 7 and the air inlet valve 12 corresponding to the second vacuumizing chamber 3 are opened, the exhaust valve 7 and the air inlet valve 12 on the other vacuumizing chambers 3 are closed, the air pump 21 is started to vacuumize the second vacuumizing chamber 3, air outside the box body 1 enters the air bag 17 in the second vacuumizing chamber 3 through the second connecting pipe 18 due to the fact that the air pressure in the second vacuumizing chamber 3 is gradually reduced, after the air pump 21 is opened for a certain time, the exhaust valve 7 and the air inlet valve 12 corresponding to the air pump 21 and the second vacuumizing chamber 3 are closed, at the moment, the air bag 17 in the second vacuumizing chamber is filled with air to be detected, and so on until the air bags 17 in the four vacuumizing chambers 3 are all filled with the air to be detected, and automatic continuous interval sampling is further realized.

Claims

1. Vacuum box for air sampling, its characterized in that: including box (1), install baffle (2) in box (1), be separated into at least two independent evacuation rooms (3) by baffle (2) in box (1), install case lid (4) on box (1), case lid (4) set up gas vent (5) in the corresponding position of every evacuation room (3) respectively, gas vent (5) connect and set up blast pipe (6) at case lid (4) top, install exhaust valve (7) on blast pipe (6), blast pipe (6) connect house steward (8), install exhaust connector (9) on house steward (8), box (1) set up air inlet (10) on every evacuation room (3), box (1) install air inlet connector (11) respectively in the both sides of air inlet (10), install air inlet valve (12) on air inlet connector (11) outside box (1).

2. The vacuum box for air sampling of claim 1, wherein: the inside of the box body (1) is divided into four independent vacuumizing chambers (3) by the partition plate (2), two sides of the main pipe (8) are respectively connected with exhaust holes of the three-way pipe (13), and two air inlet holes of the three-way pipe (13) are respectively connected with an exhaust pipe (6) of the vacuumizing chamber (3).

3. The vacuum box for air sampling of claim 1, wherein: sealing rings are arranged between the box cover (4) and the box body (1) and between the box cover (4) and the partition plate (2).

4. The vacuum box for air sampling of claim 1, wherein: the box cover (4) is fixedly arranged on the box body (1) through a hasp (14).

5. The vacuum box for air sampling of claim 1, wherein: a handle (15) is arranged on the box cover (4).

6. A vacuum box air sampler which is characterized in that: the vacuum box for air sampling comprises the vacuum box for air sampling according to any one of claims 1-5, and further comprises a controller, wherein the exhaust connector (9) is connected with the air pump (21) through a first connecting pipe (16), an air bag (17) is arranged in each vacuumizing chamber (3), the air bag (17) is connected with the air inlet connector (11) in the box body (1) through a second connecting pipe (18), an air bag valve (19) is arranged on the air bag (17), and the exhaust valve (7), the air inlet valve (12) and the air pump (21) are respectively connected with the controller.

7. The vacuum box air sampler of claim 6 wherein: an air inlet pipe (20) is connected to an air inlet connector (11) outside the box body (1).

8. The vacuum box air sampler of claim 6 wherein: still include the camera, camera wireless connection display device.