Air sampling device for indoor environment detection

Abstract

The utility model discloses an air sampling device for indoor environment detection, which relates to the technical field of indoor environment detection and comprises a frame, a plurality of connecting holes are arranged at the top end of the frame and are communicated with the inside of the frame, fans are fixedly connected with the inside of the connecting holes, an air sampling mechanism is arranged in the frame, and the air sampling mechanism is connected with the air sampling mechanism. An annular sealing ring is fixedly connected to the interior of the bottom end of the frame. Through the arranged air sampling mechanism, a driving rod rotates to drive a connecting ring to slide downwards in a connecting groove, meanwhile, the connecting ring pulls the bottom end of a collecting cover to move towards the bottom end in a frame, then the interior of the bottom end of the collecting cover is tightly attached to an annular seal, and at the moment, a hydraulic telescopic rod is controlled to downwards extrude the collecting cover; the air enters the collection container through the conveying pipe and the single air valve, so that the indoor air can be conveniently and quickly sampled, the sampled air is prevented from being influenced by other exteriors, and the accuracy of a detection result is avoided.

Description

Technical Field

[0001] This utility model relates to the field of indoor environmental testing technology, specifically to an air sampling device for indoor environmental testing. Background Technology

[0002] Indoor environments include homes, office buildings, offices, vehicles, cultural, entertainment, and sports venues, hospital wards, school and kindergarten classrooms and activity rooms, restaurants, hotels, and guesthouses. The quality of all indoor environments is closely related to health. Here, we will first discuss the home environment, which everyone comes into contact with. The home environment is a small, man-made environment where families gather, rest, study, and do housework. The quality of the hygiene of the home environment directly affects the morbidity and mortality rates of residents.

[0003] Existing indoor ambient air sampling devices are generally large in size and inconvenient to move. They can only sample the air at the location where they are placed, which is greatly affected by the range of their placement, leading to inaccurate subsequent test data. Furthermore, the sampling process is affected by the device itself, resulting in the sampled air containing other impurities. Therefore, there is a need for an indoor ambient air sampling device to overcome the shortcomings of the existing ones. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an air sampling device for indoor environmental testing. The air sampling mechanism facilitates convenient and rapid sampling of indoor air while ensuring that the sampled air is not affected by other external factors, thus avoiding inaccurate test results. The servo motor and transmission sprocket ensure that the collection hood descends smoothly and avoids gaps between the collection hood and the annular sealing strip when the collection hood delivers air, which would affect the air collection efficiency.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an air sampling device for indoor environmental monitoring, comprising a frame, several connection holes at the top of the frame communicating with the interior of the frame, a fan fixedly connected to the interior of each connection hole, an air sampling mechanism disposed inside the frame, an annular sealing ring fixedly connected to the interior of the bottom of the frame, a delivery pipe fixedly connected to the bottom of the frame communicating with the interior of the frame, connection grooves on both sides of the interior of the frame, and a mounting bracket fixedly connected to the outer side of the delivery pipe.

[0008] The air sampling mechanism described above includes an electric telescopic rod, a sampling cover, a connecting ring, and a drive rod. The sampling cover is fixedly connected to the output end of the electric telescopic rod. There are two connecting rings. The drive rod has threads on its outer side, and the connecting rings are respectively movably connected to the outer side of the drive rod through the threads.

[0009] As described above, both the electric telescopic rod and the sampling cover are located inside the frame, and the end of the electric telescopic rod away from the sampling cover is fixedly connected to the top of the frame. The sampling cover is configured to be retractable and stackable, and the outer ring of the annular sealing ring has the same diameter as the inner ring of the sampling cover.

[0010] As described above, the drive rod is vertically connected to the inside of the connecting groove and its bottom end penetrates through the frame. The connection between the drive rod and the frame is movably connected by bearings. The opposite sides of the connecting ring extend out of the connecting groove and are fixedly connected to the bottom end of the sampling cover.

[0011] As mentioned above, each of the drive rods has a fixed drive sprocket at its bottom end, and both drive sprockets are connected by a chain drive.

[0012] As described above, a servo motor is fixedly connected to the bottom end of the mounting frame, and the output end of the servo motor passes through the mounting frame and is fixedly connected to the shaft of one of the transmission sprockets through a coupling. The servo motor forms a rotation and tension structure with the sampling cover through the transmission sprocket, chain, drive rod and connecting ring.

[0013] As described above, the bottom end of the conveying pipe passes through the frame and the mounting bracket in sequence, and a one-way valve is fixedly connected to the bottom end, with the one-way valve opening facing downwards. The mounting bracket is L-shaped.

[0014] Beneficial effects:

[0015] Compared with existing technologies, this indoor environmental air sampling device has the following advantages:

[0016] I. This utility model utilizes an air sampling mechanism that employs a rotating drive rod to cause a connecting ring to slide downwards within a connecting groove. Simultaneously, the connecting ring pulls the bottom of the sampling cover towards the bottom of the frame. Subsequently, the bottom of the sampling cover comes into close contact with the annular seal. At this point, the hydraulic telescopic rod is controlled to press the collection cover downwards, thereby compressing its internal components and allowing them to enter the collection container through a delivery pipe and a single air valve. This facilitates convenient and rapid sampling of indoor air while ensuring that the sampled air is not affected by external factors, thus preventing inaccurate test results.

[0017] Second, this utility model uses a servo motor and a transmission sprocket. The servo motor drives the transmission sprocket to rotate, and the chain drives another transmission sprocket to drive two drive rods to rotate. This helps to ensure that the collection hood descends smoothly and avoids gaps between the collection hood and the annular sealing strip when the collection hood delivers air, thus affecting the air collection efficiency.

[0018] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the frame of this utility model;

[0021] Figure 3 This is a schematic diagram of the transmission sprocket connection structure of this utility model;

[0022] Figure 4 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0023] In the diagram: 1. Frame; 2. Connecting hole; 3. Fan; 4. Air sampling mechanism; 401. Electric telescopic rod; 402. Sampling cover; 403. Connecting ring; 404. Drive rod; 5. Annular sealing ring; 6. Delivery pipe; 7. Connecting groove; 8. Mounting bracket; 9. Chain; 10. Transmission sprocket; 11. Servo motor; 12. One-way valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-4As shown, this utility model provides a technical solution: an air sampling device for indoor environmental testing, including a frame 1. Several connection holes 2 are opened at the top of the frame 1, and the connection holes 2 are connected to the inside of the frame 1. A fan 3 is fixedly connected to the inside of each connection hole 2. An air sampling mechanism 4 is set inside the frame 1. An annular sealing ring 5 is fixedly connected to the inside of the bottom of the frame 1. A delivery pipe 6 is fixedly connected to the bottom of the frame 1, and the delivery pipe 6 is connected to the inside of the frame 1. There are connection grooves 7 on both sides of the inside of the frame 1. An installation bracket 8 is fixedly connected to the outside of the delivery pipe 6.

[0026] like Figure 1-4 As shown, the air sampling mechanism 4 includes an electric telescopic rod 401, a sampling cover 402, a connecting ring 403, and a drive rod 404. The sampling cover 402 is fixedly connected to the output end of the electric telescopic rod 401. There are two connecting rings 403. The outer side of the drive rod 404 is threaded, and the connecting rings 403 are respectively movably connected to the outer side of the drive rod 404 through the thread. The electric telescopic rod 401 and the sampling cover 402 are both located inside the frame 1, and the end of the electric telescopic rod 401 away from the sampling cover 402 is fixedly connected to the top of the frame 1. The sampling cover 402 is configured to be retractable and stackable, and the outer ring of the annular sealing ring 5 has the same diameter as the inner ring of the sampling cover 402. The drive rod 404 is vertically connected to the inside of the connecting groove 7 and its bottom end penetrates through the frame 1. The connection between the drive rod 404 and the frame 1 is movably connected by bearings. The opposite sides of the connecting rings 403 extend out of the connecting groove 7 and are fixedly connected to the bottom end of the sampling cover 402.

[0027] The rotation of the drive rod 404 causes the connecting ring 403 to slide downward inside the connecting groove 7. At the same time, the connecting ring 403 pulls the bottom end of the collection cover to move towards the bottom end of the frame 1. Then, the bottom end of the collection cover is pressed tightly against the annular seal. At this time, the hydraulic telescopic rod is controlled to squeeze the collection cover downward, thereby compressing its internal components and allowing them to enter the collection container through the delivery pipe 6 and the single air valve. This facilitates convenient and rapid sampling of indoor air while ensuring that the sampled air is not affected by other external factors, thus avoiding inaccurate test results.

[0028] like Figure 2-4 As shown, the bottom end of the drive rod 404 is fixedly connected to a transmission sprocket 10. Both transmission sprockets 10 are connected by a chain 9. The bottom end of the mounting frame 8 is fixedly connected to a servo motor 11. The output end of the servo motor 11 passes through the mounting frame 8 and is fixedly connected to the shaft of one of the transmission sprockets 10 through a coupling. The servo motor 11 forms a rotation and tension structure with the sampling cover 402 through the transmission sprocket 10, chain 9, drive rod 404 and connecting ring 403. The bottom end of the delivery pipe 6 passes through the frame 1 and the mounting frame 8 in sequence and is fixedly connected to a one-way valve 12. The opening of the one-way valve 12 faces downward. The mounting frame 8 is L-shaped.

[0029] The servo motor 11 drives the transmission sprocket 10 to rotate. At this time, the chain 9 drives another transmission sprocket 10 to drive the two drive rods 404 to rotate. This helps to ensure that the collection hood descends smoothly and avoids gaps between the collection hood and the annular sealing strip when the collection hood delivers air, thus affecting the air collection efficiency.

[0030] Working principle: When indoor air sampling is required, the fan 3 is first started to transport the indoor air from the top of the frame 1 to the inside of the frame 1. After a period of transport, the air inside the frame 1 is kept consistent with the indoor air. Then, the servo motor 11 is started to drive the transmission sprocket 10 to rotate. At this time, the chain 9 drives another transmission sprocket 10 to drive the two drive rods 404 to rotate. The rotation of the drive rods 404 causes the connecting ring 403 to slide downward inside the connecting groove 7. At the same time, the connecting ring 403 pulls the bottom of the collection cover to move towards the bottom of the inside of the frame 1. Then, the bottom of the collection cover is pressed tightly against the annular seal. At this time, the hydraulic telescopic rod is controlled to press the collection cover downward, thereby compressing the air inside the collection cover and allowing it to enter the collection container through the delivery pipe 6 and the single air valve.

[0031] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An air sampling device for indoor environmental monitoring, comprising a frame (1), characterized in that: The top of the frame (1) has several connecting holes (2) and the connecting holes (2) are connected to the inside of the frame (1). A fan (3) is fixedly connected to the inside of each connecting hole (2). An air sampling mechanism (4) is provided inside the frame (1). An annular sealing ring (5) is fixedly connected to the inside of the bottom of the frame (1). A conveying pipe (6) is fixedly connected to the bottom of the frame (1) and the conveying pipe (6) is connected to the inside of the frame (1). There are connecting grooves (7) on both sides of the inside of the frame (1). An installation bracket (8) is fixedly connected to the outside of the conveying pipe (6).

2. The air sampling device for indoor environmental monitoring according to claim 1, characterized in that: The air sampling mechanism (4) includes an electric telescopic rod (401), a sampling cover (402), a connecting ring (403), and a drive rod (404). The sampling cover (402) is fixedly connected to the output end of the electric telescopic rod (401). There are two connecting rings (403). The drive rod (404) has threads on its outer side, and the connecting rings (403) are respectively connected to the outer side of the drive rod (404) through threads.

3. The air sampling device for indoor environmental monitoring according to claim 2, characterized in that: The electric telescopic rod (401) and the sampling cover (402) are both located inside the frame (1), and the end of the electric telescopic rod (401) away from the sampling cover (402) is fixedly connected to the top of the frame (1). The sampling cover (402) is configured to be retractable and stackable, and the outer ring of the annular sealing ring (5) has the same diameter as the inner ring of the sampling cover (402).

4. The air sampling device for indoor environmental monitoring according to claim 2, characterized in that: The drive rod (404) is vertically connected to the inside of the connecting groove (7) and its bottom end passes through the frame (1). The drive rod (404) and the frame (1) are connected by bearings. The connecting ring (403) extends out of the connecting groove (7) on the opposite side and is fixedly connected to the bottom end of the sampling cover (402).

5. The air sampling device for indoor environmental monitoring according to claim 2, characterized in that: The bottom end of each drive rod (404) is fixedly connected to a transmission sprocket (10), and the two transmission sprockets (10) are connected by a chain (9).

6. The air sampling device for indoor environmental monitoring according to claim 1, characterized in that: The bottom end of the mounting bracket (8) is fixedly connected to a servo motor (11), and the output end of the servo motor (11) passes through the mounting bracket (8) and is fixedly connected to the shaft of one of the transmission sprockets (10) through a coupling. The servo motor (11) forms a rotation and tension structure with the sampling cover (402) through the transmission sprocket (10), chain (9), drive rod (404) and connecting ring (403).

7. The air sampling device for indoor environmental monitoring according to claim 1, characterized in that: The bottom end of the conveying pipe (6) passes through the frame (1) and the mounting bracket (8) in sequence, and a one-way valve (12) is fixedly connected to the bottom end. The opening of the one-way valve (12) faces downward, and the mounting bracket (8) is L-shaped.

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