Atmospheric pollutant formaldehyde sampling device

Abstract

The utility model discloses an atmospheric pollutant formaldehyde sampling device and relates to the technical field of formaldehyde sampling devices. The atmospheric pollutant formaldehyde sampling device comprises a filtering device, the filtering device is arranged on a fixed bottom plate, the sampling device is arranged on the fixed bottom plate, the sampling device comprises a partition plate, the front surface of the partition plate is fixedly connected with an L-shaped fixed plate, the lower surface of the L-shaped fixed plate is fixedly connected with an air inlet pipe, the air inlet pipe is provided with an air draft fan, and the air draft fan is arranged on the air draft fan. A worker can take down the sampling tank after sampling through a lifting handle, then the worker can conveniently detect the formaldehyde content of air in the sampling tank, then another sampling tank is placed on an arc-shaped placement groove in a fixed block, the worker starts an exhaust fan at the next sampling time, and then air in different time periods is sampled; a plurality of detachable sampling tanks are matched, so that formaldehyde samples in a plurality of time periods can be conveniently collected, and the practicability of the atmospheric pollutant formaldehyde sampling device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde sampling devices, in particular to an atmospheric pollutant formaldehyde sampling device. Background Art

[0002] Formaldehyde itself does not cause asthma, but it can cause acute asthma attacks in patients with asthma (especially children). Therefore, when children with asthma enter a place, such as some children's playgrounds, children's training institutions, etc., in order to protect the safety of children with asthma and avoid accidents, it is necessary to sample the air in the atmosphere, and then conduct special tests to determine whether the formaldehyde contained in the air will cause acute asthma attacks. However, the existing sampling devices and sampling storage devices are mostly integrated. When testing the gas inside the sampling storage device, the sampling device needs to be taken away together. After the test, the sampling device is put back to the place where the sampling was previously done, and the air is sampled and sent for testing. This reciprocating process is used to complete the formaldehyde content in the indoor air at different time periods to determine whether it is suitable for children to live in. This has poor practicality. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a formaldehyde sampling device for atmospheric pollutants. The utility model can solve the problem that the existing sampling device and the sampling storage device are mostly integrated, and when the gas inside the sampling storage device is detected, the sampling device needs to be taken away together. After the detection, the sampling device is returned to the place where the sampling was done before, the air is sampled, and then sent for detection. In this way, the formaldehyde content in the indoor air at different time periods is completed, and whether it is suitable for children to live is judged in turn, which has poor practicality.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an atmospheric pollutant formaldehyde sampling device, comprising a filtering device, the filtering device is arranged on a fixed bottom plate, a sampling device, the sampling device is arranged on the fixed bottom plate, the sampling device comprises a partition, and an L-shaped fixing plate is fixedly connected to the front surface of the partition;

[0007] The lower surface of the L-shaped fixing plate is fixedly connected with an air intake pipe, an exhaust fan is arranged on the air intake pipe, an air inlet of the exhaust fan is connected with the air intake pipe, and a fourth connecting pipe connected with the air intake pipe is fixedly connected with the rear surface of the air intake pipe;

[0008] Among them, the rear end of the fourth connecting pipe slides through the rear surface of the partition, the inner wall of the fourth connecting pipe is slidably connected with a sealing sleeve, the inner wall of the sealing sleeve is fixedly sleeved with a fifth connecting pipe, the fifth connecting pipe is slidably connected in the inner wall of the fourth connecting pipe, and the fifth connecting pipe is provided with a first switch valve.

[0009] Preferably, two rectangular plates are fixedly connected to the front surface of the partition, and the upper surfaces of the two rectangular plates are fixedly connected to telescopic cylinders;

[0010] The telescopic ends of the two telescopic cylinders are slid through the rear surface of the partition, the telescopic ends of the two telescopic cylinders are fixedly connected with connecting plates, and the two connecting plates are fixedly connected with the fifth connecting pipe.

[0011] Preferably, the sampling device also includes a fixed block, which is fixedly connected to the upper surface of the fixed base plate, the upper surface of the fixed block is provided with an arc-shaped placement groove, the inner wall of the arc-shaped placement groove is provided with a first fixing hole, and the inner wall of the first fixing hole is movably connected with a fixing rod.

[0012] Preferably, a sampling tank is fixedly connected to the upper surface of the fixing rod, and a handle is fixedly connected to the upper surface of the sampling tank;

[0013] The front surface of the sampling tank is fixedly connected with a first connecting pipe communicating therewith, the front end of the first connecting pipe is fixedly connected with a second connecting pipe communicating therewith, and a second switch valve is arranged on the first connecting pipe.

[0014] Preferably, the filtering device comprises a filter box, which is fixedly connected to the lower surface of the fixed bottom plate, and three filter screens are arranged inside the filter box;

[0015] Among them, the three filters are formaldehyde filter, activated carbon adsorption plate, activated alumina adsorption plate from top to bottom, and the rear surface of the filter box is fixedly connected with an air outlet pipe communicating therewith.

[0016] Preferably, the filtering device further comprises a third connecting pipe, the third connecting pipe is fixedly connected to the lower surface of the air inlet pipe, the third connecting pipe is communicated with the air inlet pipe, and a third control valve is arranged on the third connecting pipe;

[0017] The lower surface of the third connecting pipe is fixedly connected with an air supply pipe communicating therewith, the lower surface of the air supply pipe penetrates the lower surface of the fixed bottom plate and is fixedly connected to the filter box, and the air supply pipe communicates with the filter box;

[0018] Among them, two concave fixing plates are fixedly connected to the lower surface of the fixed bottom plate, and the inner walls of the two concave fixing plates are both provided with second fixing holes, and the two concave fixing plates are both used for placing the sampling tank;

[0019] The two concave fixing plates and the filter box are both made of high-strength alloy or high-strength plastic, and the two concave fixing plates and the filter box can be used as supporting bases.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] (1) In the formaldehyde sampling device for atmospheric pollutants, the staff can remove the sampled sampling can by the handle, so as to facilitate the staff to detect the formaldehyde content in the air inside the sampling can, and then place another sampling can on the arc-shaped placement groove on the fixed block. When the next sampling time comes, the staff turns on the exhaust fan to sample the air in different time periods. In addition, with multiple detachable sampling cans, it is convenient to collect formaldehyde samples in multiple time periods, thereby improving the practicality of the formaldehyde sampling device for atmospheric pollutants. Then, by detecting the formaldehyde content in the air in different time periods, the average formaldehyde content in the indoor air and the formaldehyde content in the air in each time period are judged in turn to ensure whether it is suitable for children to live in, thereby reducing the probability of asthma in children with asthma caused by formaldehyde.

[0023] (2) The formaldehyde sampling device for atmospheric pollutants starts the exhaust fan, which draws external air into the interior of the filter box through the third connecting pipe and the air supply pipe. The three filters filter the formaldehyde and other impurities contained in the air, thereby achieving the function of purifying the formaldehyde and improving the practicality of the formaldehyde sampling device for atmospheric pollutants. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the interior of the filter box of the utility model;

[0027] Figure 3 This is a schematic diagram of a top view of the upper surface of the fixed bottom plate of the utility model;

[0028] Figure 4 This is a schematic diagram of the connection between the fifth connecting pipe and the sealing sleeve of the utility model;

[0029] Figure 5 It is a schematic diagram of the lower surface of the sampling tank of the utility model when viewed from above.

[0030] Figure numerals: 1. fixed bottom plate; 2. concave fixed plate; 3. sampling tank; 4. first connecting pipe; 5. second connecting pipe; 6. air supply pipe; 7. air inlet pipe; 8. exhaust fan; 9. third connecting pipe; 10. L-shaped fixed plate; 11. partition; 12. telescopic cylinder; 13. connecting plate; 14. fixing block; 15. fourth connecting pipe; 16. fifth connecting pipe; 17. filter screen; 18. fixing rod; 19. sealing sleeve; 20. first fixing hole; 21. second fixing hole; 22. air outlet pipe; 23. filter box. DETAILED DESCRIPTION

[0031] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] See also Figure 1-5 , the utility model provides a technical solution: an atmospheric pollutant formaldehyde sampling device, comprising a fixed bottom plate 1, a filtering device, and the filtering device is arranged on the fixed bottom plate 1;

[0036] The sampling device is arranged on the fixed bottom plate 1, and comprises a partition plate 11, and an L-shaped fixing plate 10 is fixedly connected to the front surface of the partition plate 11;

[0037] The lower surface of the L-shaped fixing plate 10 is fixedly connected with an air intake pipe 7, an exhaust fan 8 is arranged on the air intake pipe 7, an air inlet of the exhaust fan 8 is communicated with the air intake pipe 7, and a fourth connecting pipe 15 is fixedly connected to the rear surface of the air intake pipe 7;

[0038] Among them, the rear end of the fourth connecting tube 15 slides through the rear surface of the partition 11, the inner wall of the fourth connecting tube 15 is slidably connected with a sealing sleeve 19, the inner wall of the sealing sleeve 19 is fixedly sleeved with a fifth connecting tube 16, the fifth connecting tube 16 is slidably connected in the inner wall of the fourth connecting tube 15, and the fifth connecting tube 16 is provided with a first switch valve.

[0039] Furthermore, two rectangular plates are fixedly connected to the front surface of the partition 11, and the upper surfaces of the two rectangular plates are fixedly connected to the telescopic cylinder 12;

[0040] The telescopic ends of the two telescopic cylinders 12 slide through the rear surface of the partition 11 , and the telescopic ends of the two telescopic cylinders 12 are fixedly connected to the connecting plates 13 , and the two connecting plates 13 are fixedly connected to the fifth connecting pipe 16 .

[0041] Furthermore, the sampling device also includes a fixed block 14, which is fixedly connected to the upper surface of the fixed base plate 1. The upper surface of the fixed block 14 is provided with an arc-shaped placement groove, the inner wall of the arc-shaped placement groove is provided with a first fixing hole 20, and the inner wall of the first fixing hole 20 is movably inserted with a fixing rod 18.

[0042] Furthermore, the upper surface of the fixing rod 18 is fixedly connected with the sampling tank 3, and the upper surface of the sampling tank 3 is fixedly connected with a handle;

[0043] The front surface of the sampling tank 3 is fixedly connected with a first connecting pipe 4 communicating therewith, the front end of the first connecting pipe 4 is fixedly connected with a second connecting pipe 5 communicating therewith, and the first connecting pipe 4 is provided with a second switch valve.

[0044] Furthermore, the filtering device includes a filter box 23, which is fixedly connected to the lower surface of the fixed bottom plate 1, and three filter screens 17 are arranged inside the filter box 23;

[0045] The three filters 17 are, from top to bottom, a formaldehyde filter, an activated carbon adsorption plate, and an activated alumina adsorption plate, and the rear surface of the filter box 23 is fixedly connected with an air outlet pipe 22 communicating therewith.

[0046] Furthermore, the filtering device further comprises a third connecting pipe 9, which is fixedly connected to the lower surface of the air inlet pipe 7, the third connecting pipe 9 is communicated with the air inlet pipe 7, and a third control valve is arranged on the third connecting pipe 9;

[0047] The lower surface of the third connecting pipe 9 is fixedly connected with an air supply pipe 6 which is in communication therewith. The lower surface of the air supply pipe 6 penetrates through the lower surface of the fixed bottom plate 1 and is fixedly connected to the filter box 23. The air supply pipe 6 is in communication with the filter box 23.

[0048] Among them, two concave fixing plates 2 are fixedly connected to the lower surface of the fixed bottom plate 1, and the inner walls of the two concave fixing plates 2 are both provided with second fixing holes 21, and the two concave fixing plates 2 are both used to place the sampling tank 3;

[0049] The two concave fixing plates 2 and the filter box 23 are both made of high-strength alloy or high-strength plastic, and the two concave fixing plates 2 and the filter box 23 can be used as support bases.

[0050] Furthermore, when sampling formaldehyde, the staff first picks up the sampling tank 3 as a whole by the handle, then places the sampling tank 3 on the arc-shaped placement groove on the fixing block 14, and inserts the fixing rod 18 into the first fixing hole 20 to simply fix the sampling tank 3, and then starts the two telescopic cylinders 12. The telescopic ends of the two telescopic cylinders 12 drive the two connecting plates 13 to move backward, and at the same time, the two connecting plates 13 drive the fifth connecting pipe 16 and the sealing sleeve 19 to move after passing through the inner wall of the fourth connecting pipe 15. When the fifth connecting pipe 16 enters the inner wall of the second connecting pipe 5, the two connecting plates 13 are stopped, and then the second switch valve on the first connecting pipe 4 is opened, and then the exhaust fan 8 is started. The exhaust fan 8 allows external air to enter the interior of the sampling tank 3 through the air inlet pipe 7, the fourth connecting pipe 15, the fifth connecting pipe 16, the second connecting pipe 5 and the first connecting pipe 4, and then the second switch valve on the first connecting pipe 4 is closed, and then Reset the two telescopic cylinders 12 to make the fifth connecting pipe 16 detach from the inner wall of the second connecting pipe 5. Then the staff can remove the sampled sampling tank 3 by the handle, so as to facilitate the staff to detect the formaldehyde content of the air inside the sampling tank 3. Then place another sampling tank 3 on the arc placement groove on the fixed block 14. At the next sampling time, the staff turns on the exhaust fan 8 to sample the air in different time periods. In addition, with multiple detachable sampling tanks 3, it is convenient to collect formaldehyde samples in multiple time periods, thereby improving the practicality of the formaldehyde sampling device for atmospheric pollutants. At the same time, the staff can use sticky notes to stick on the surface of the sampling tank 3 to record the specific time of sampling, and then detect the formaldehyde content in the air in different time periods to judge the average value of the formaldehyde content in the indoor air and the formaldehyde content in the air in each time period in turn to ensure whether it is suitable for children to live in and reduce the chance of asthma in children with asthma caused by formaldehyde.

[0051] Furthermore, when sampling is not needed, the first control valve on the fifth connecting pipe 16 is closed, and then the third control valve on the third connecting pipe 9 is opened, and the exhaust fan 8 is started. The exhaust fan 8 draws external air into the interior of the filter box 23 through the third connecting pipe 9 and the air supply pipe 6. The three filters 17 will filter the formaldehyde and other impurities contained in the air, thereby achieving the function of purifying the formaldehyde and improving the practicability of the atmospheric pollutant formaldehyde sampling device.

[0052] Working principle: When sampling formaldehyde, the staff first picks up the sampling tank 3 as a whole by the handle, then places the sampling tank 3 on the arc-shaped placement groove on the fixing block 14, and inserts the fixing rod 18 into the first fixing hole 20 to simply fix the sampling tank 3, and then starts the two telescopic cylinders 12. The telescopic ends of the two telescopic cylinders 12 drive the two connecting plates 13 to move backward. At the same time, the two connecting plates 13 drive the fifth connecting pipe 16 and the sealing sleeve 19 to move after passing through the inner wall of the fourth connecting pipe 15. When the fifth connecting pipe 16 enters the inner wall of the second connecting pipe 5, the two connecting plates 13 are stopped, and then the second switch valve on the first connecting pipe 4 is opened, and then the exhaust fan 8 is started. The exhaust fan 8 allows external air to enter the interior of the sampling tank 3 through the air inlet pipe 7, the fourth connecting pipe 15, the fifth connecting pipe 16, the second connecting pipe 5 and the first connecting pipe 4, and then the second switch valve on the first connecting pipe 4 is closed. Reset the two telescopic cylinders 12 to make the fifth connecting pipe 16 detach from the inner wall of the second connecting pipe 5. Then the staff can remove the sampled sampling tank 3 by the handle, so as to facilitate the staff to detect the formaldehyde content of the air inside the sampling tank 3. Then place another sampling tank 3 on the arc placement groove on the fixed block 14. At the next sampling time, the staff turns on the exhaust fan 8 to sample the air in different time periods. In addition, with multiple detachable sampling tanks 3, it is convenient to collect formaldehyde samples in multiple time periods, thereby improving the practicality of the formaldehyde sampling device for atmospheric pollutants. At the same time, the staff can use sticky notes to stick on the surface of the sampling tank 3 to record the specific time of sampling, and then detect the formaldehyde content in the air in different time periods to judge the average value of the formaldehyde content in the indoor air and the formaldehyde content in the air in each time period in turn to ensure whether it is suitable for children to live in and reduce the chance of asthma in children with asthma caused by formaldehyde.

[0053] Furthermore, when sampling is not needed, the first control valve on the fifth connecting pipe 16 is closed, and then the third control valve on the third connecting pipe 9 is opened, and the exhaust fan 8 is started. The exhaust fan 8 draws external air into the interior of the filter box 23 through the third connecting pipe 9 and the air supply pipe 6. The three filters 17 will filter the formaldehyde and other impurities contained in the air, thereby achieving the function of purifying the formaldehyde and improving the practicability of the atmospheric pollutant formaldehyde sampling device.

[0054] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An atmospheric pollutant formaldehyde sampling device, characterized in that: include: A filtering device, the filtering device being arranged on the fixed bottom plate (1); A sampling device, the sampling device is arranged on the fixed bottom plate (1), the sampling device comprises a partition plate (11), and an L-shaped fixing plate (10) is fixedly connected to the front surface of the partition plate (11); The lower surface of the L-shaped fixing plate (10) is fixedly connected to an air intake pipe (7), an exhaust fan (8) is arranged on the air intake pipe (7), an air inlet of the exhaust fan (8) is in communication with the air intake pipe (7), and a fourth connecting pipe (15) in communication with the air intake pipe (7) is fixedly connected to the rear surface of the air intake pipe (7); The rear end of the fourth connecting tube (15) slides through the rear surface of the partition (11), the inner wall of the fourth connecting tube (15) is slidably connected with a sealing sleeve (19), the inner wall of the sealing sleeve (19) is fixedly sleeved with a fifth connecting tube (16), the fifth connecting tube (16) is slidably connected to the inner wall of the fourth connecting tube (15), and a first switch valve is arranged on the fifth connecting tube (16).

2. The air pollutant formaldehyde sampling device according to claim 1, characterized in that: Two rectangular plates are fixedly connected to the front surface of the partition (11), and telescopic cylinders (12) are fixedly connected to the upper surfaces of the two rectangular plates; The telescopic ends of the two telescopic cylinders (12) are slidably passed through the rear surface of the partition (11), the telescopic ends of the two telescopic cylinders (12) are fixedly connected to the connecting plates (13), and the two connecting plates (13) are fixedly connected to the fifth connecting pipe (16).

3. The air pollutant formaldehyde sampling device according to claim 1, characterized in that: The sampling device also includes a fixed block (14), the fixed block (14) is fixedly connected to the upper surface of the fixed base plate (1), the upper surface of the fixed block (14) is provided with an arc-shaped placement groove, the inner wall of the arc-shaped placement groove is provided with a first fixing hole (20), and the inner wall of the first fixing hole (20) is movably plugged with a fixing rod (18).

4. The air pollutant formaldehyde sampling device according to claim 3, characterized in that: The upper surface of the fixing rod (18) is fixedly connected to a sampling tank (3), and the upper surface of the sampling tank (3) is fixedly connected to a handle; The front surface of the sampling tank (3) is fixedly connected to a first connecting pipe (4) in communication therewith, the front end of the first connecting pipe (4) is fixedly connected to a second connecting pipe (5) in communication therewith, and the first connecting pipe (4) is provided with a second switch valve.

5. The air pollutant formaldehyde sampling device according to claim 1, characterized in that: The filtering device comprises a filtering box (23), the filtering box (23) is fixedly connected to the lower surface of the fixed bottom plate (1), and three filtering screens (17) are arranged inside the filtering box (23); The three filter screens (17) are, from top to bottom, a formaldehyde filter screen, an activated carbon adsorption plate, and an activated alumina adsorption plate, and the rear surface of the filter box (23) is fixedly connected to an air outlet pipe (22) communicating therewith.

6. The air pollutant formaldehyde sampling device according to claim 1, characterized in that: The filtering device further comprises a third connecting pipe (9), the third connecting pipe (9) being fixedly connected to the lower surface of the air intake pipe (7), the third connecting pipe (9) being in communication with the air intake pipe (7), and a third control valve being arranged on the third connecting pipe (9); The lower surface of the third connecting pipe (9) is fixedly connected to an air supply pipe (6) communicating therewith, the lower surface of the air supply pipe (6) penetrates through the lower surface of the fixed bottom plate (1) and is fixedly connected to the filter box (23), and the air supply pipe (6) communicates with the filter box (23); Wherein, two concave fixing plates (2) are fixedly connected to the lower surface of the fixing bottom plate (1), the inner walls of the two concave fixing plates (2) are both provided with second fixing holes (21), and the two concave fixing plates (2) are both used for placing the sampling tank (3); The two concave fixing plates (2) and the filter box (23) are both made of high-strength alloy or high-strength plastic, and the two concave fixing plates (2) and the filter box (23) can both be used as support bases.

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