Indoor air sampling auxiliary device

Abstract

The utility model discloses an indoor air sampling auxiliary device, which relates to the technical field of indoor air sampling, and comprises a filter screen barrel, a sampling pipe is arranged above the filter screen barrel, the filter screen barrel comprises a plurality of filter screens and a support component, and the support component is arranged on the filter screens. The multiple filter screens are vertically stacked and connected through the supporting assembly, the supporting assembly comprises a top plate and a supporting column, the supporting column is welded and fixed to the center of the lower surface of the top plate and penetrates through the centers of the filter screens, the filter screens vertically move along the supporting column, and a connector is arranged at the center of the upper surface of the top plate. According to the scheme, the problems that when existing indoor air sampling is carried out, on-site air contains many particulate matter, the particulate matter enters the sampling pipe after the sampling pipe carries out sampling for multiple times, and consequently sampling resistance is increased, and even the sampling pipe fails are solved.

Description

Technical Field

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

[0002] Indoor air sampling is a crucial step in indoor air quality testing. It involves collecting indoor air samples using sampling tubes, followed by analysis.

[0003] For example, Chinese authorized patent CN214121718U (An Indoor Air Detection and Sampling Device) includes a sampling bottle and a sealing plug. The sealing plug is installed at the mouth of the sampling bottle, which contains purified water. An air inlet pipe and a drain pipe are installed on the sealing plug. The bottom end of the air inlet pipe passes through the sealing plug and extends to the bottom end of the sampling bottle, while the bottom end of the drain pipe passes through the sealing plug and extends to the top end of the sampling bottle. In this indoor air detection and sampling device, air is introduced into the inflation pipe. A three-way valve is adjusted so that air is discharged from the interface on the side of the three-way valve. After air has been introduced for a period of time, the three-way valve is adjusted again to connect the inflation pipe and the air inlet pipe, allowing air to enter the sampling bottle. The purified water in the sampling bottle is discharged through the drain pipe and then drained through a connecting pipe.

[0004] However, in existing indoor air sampling, the air contains a lot of particulate matter. After multiple samplings, the particulate matter enters the sampling tube, leading to increased sampling resistance or even tube failure. Therefore, it does not meet the current requirements. To address this, we propose an auxiliary device for indoor air sampling. Utility Model Content

[0005] The purpose of this invention is to provide an indoor air sampling auxiliary device to solve the problem mentioned in the background art that when existing indoor air sampling is carried out, the air contains a lot of particulate matter, and after multiple samplings, the particulate matter enters the sampling tube, resulting in increased sampling resistance or even sampling tube failure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an indoor air sampling auxiliary device, comprising: a filter screen barrel, a sampling tube disposed above the filter screen barrel, the filter screen barrel including a filter screen and a support assembly, and multiple filter screens are provided, and the multiple filter screens are stacked and connected by the support assembly, the support assembly including a top plate and a support column, and the support column is welded and fixed to the center of the lower surface of the top plate, and the support column passes through the center of the filter screen, and the filter screen moves up and down along the support column.

[0007] Preferably, a connector is provided at the center of the upper surface of the top plate, and the internal air channel of the connector extends downward into the interior of the support column. An air inlet is provided on the outer wall of the support column near the top, and the air inlet is interconnected with the connector.

[0008] Preferably, a silicone hose is provided on the outside of the top end of the connector, and the top end of the connector is inserted along one end of the silicone hose, and the air inlet end of the sampling tube is inserted along the other end of the silicone hose, and the connector is connected to the sampling tube through the silicone hose.

[0009] Preferably, the outer surface of the support column is provided with a movable groove, and the lower end of the movable groove extends out of the support column, and one end of the movable groove is provided with a limiting groove.

[0010] Preferably, a support plate is slidably connected inside the movable groove, and one end of the support plate slides along the limiting groove.

[0011] Preferably, a stabilizing base plate is provided at the lower end of the support column, a threaded connecting column is provided on the upper surface of the stabilizing base plate, and a threaded connecting groove is provided at the center of the lower surface of the support column, and the threaded connecting column and the threaded connecting groove are threadedly connected.

[0012] Preferably, the support assembly is made entirely of stainless steel, and the filter screen is also made of stainless steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model consists of a filter barrel composed of a support component and a filter screen. One end of the support plate moves along the moving groove and the limiting slide groove. One filter screen and one support plate are installed alternately. The support plate limits the distance between adjacent filter screens, which facilitates the filter screen's filtration operation. When sampling air, the filter barrel filters the air to prevent particulate matter from entering the sampling tube and prevent the sampling tube from failing. The filtered air enters the connector from the air inlet and is sampled along the sampling tube through the silicone hose. The overall size is small and easy to carry. It can be placed directly in the sampling box with the sampler, which makes it easy to observe the blockage of the filter cartridge and the filter barrel. It is easy to clean and can be cleaned directly with a brush and water. It is simple and convenient. It solves the problem that when sampling indoor air, there are many particulate matter in the air. After multiple samplings, the particulate matter enters the sampling tube, which increases the sampling resistance or even causes the sampling tube to fail.

[0015] (2) By setting a stable base plate at the bottom of the support column, the stable base plate is fixed to the threaded connection column and the threaded connection groove, which protects the bottom opening of the moving groove and the limiting slide groove, preventing the support pressure plate from slipping off and the filter screen from slipping off. After the stable base plate is removed, it is easy to remove the filter screen for cleaning, thus improving flexibility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the support component structure of this utility model;

[0018] Figure 3 This is a bottom view of the support component of this utility model;

[0019] Figure 4 This is a schematic diagram of the disassembled structure of the support column and the stabilizing base plate of this utility model;

[0020] In the diagram: 1. Filter barrel; 2. Filter; 3. Support assembly; 4. Connector; 5. Silicone hose; 6. Sampling tube; 7. Top plate; 8. Support column; 9. Moving groove; 10. Support pressure plate; 11. Limiting slide groove; 12. Air inlet; 13. Stabilizing base plate; 14. Threaded connecting column; 15. Threaded connecting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4This utility model provides an embodiment of an indoor air sampling auxiliary device, comprising: a filter barrel 1, a sampling tube 6 disposed above the filter barrel 1, the filter barrel 1 including filter screens 2 and a support assembly 3, and multiple filter screens 2 are provided, and the multiple filter screens 2 are stacked and connected by the support assembly 3, the support assembly 3 including a top plate 7 and a support column 8, and the support column 8 is welded and fixed to the center of the lower surface of the top plate 7, and the support column 8 passes through the center of the filter screen 2, the filter screen 2 moves up and down along the support column 8, and a connector 4 is provided at the center of the upper surface of the top plate 7, and the interior of the connector 4 is hollow. The air passage extends downwards into the interior of the support column 8. An air inlet 12 is located on the outer wall of the support column 8 near its top, and this inlet 12 communicates with the connector 4. A silicone hose 5 is attached to the outer surface of the top of the connector 4, and the top of the connector 4 is inserted along one end of the silicone hose 5. The air inlet of the sampling tube 6 is inserted along the other end of the silicone hose 5. The connector 4 is connected to the sampling tube 6 via the silicone hose 5. A movable groove 9 is provided on the outer surface of the support column 8, and the lower end of the movable groove 9 extends out of the support column 8. A limiting groove 11 is provided at one end of the movable groove 9, and a support pressure plate 10 is slidably connected inside the movable groove 9. Furthermore, one end of the support plate 10 slides along the limiting groove 11, and the support column 8 passes through the center of the filter screen 2. The filter screen 2 moves up and down along the support column 8, and one end of the support plate 10 moves along the moving groove 9 and the limiting groove 11. One filter screen 2 and one support plate 10 are installed alternately, thereby connecting multiple filter screens 2 and multiple support plates 10 to the support column 8. The support plate 10 also limits the distance between adjacent filter screens 2, facilitating the filtration operation of the filter screens 2. The moving groove 9 and the limiting groove 11 are T-shaped, and the moving end of the support plate 10 is also T-shaped. This design effectively limits the movement of the support plate 10, preventing it from falling and improving stability. During air sampling, the air is filtered through the filter canister 1 to prevent particulate matter from entering the sampling tube 6 and causing it to malfunction. The filtered air enters the connector 4 through the air inlet 12 and is then sampled along the sampling tube 6 via the silicone hose 5. The overall design is small and portable, and can be placed directly in the sampling box with the sampler. This allows for easy observation of the filter cartridge's blockage and the filter canister 1's blockage, making cleaning simple and convenient. It can be cleaned directly with a brush and water.

[0023] Please see Figure 1 , 4A stabilizing base plate 13 is provided at the lower end of the support column 8. A threaded connecting column 14 is provided on the upper surface of the stabilizing base plate 13. A threaded connecting groove 15 is provided at the center of the lower surface of the support column 8. The threaded connecting column 14 and the threaded connecting groove 15 are threadedly connected. After the filter screen 2 and the support pressure plate 10 are installed, the stabilizing base plate 13 is fixed by the threaded connecting column 14 and the threaded connecting groove 15, which protects the bottom opening of the moving groove 9 and the limiting slide groove 11, preventing the support pressure plate 10 from slipping and also preventing the filter screen 2 from slipping.

[0024] Please see Figure 1 The support component 3 is made entirely of stainless steel, and the filter screen 2 is also made of stainless steel. Stainless steel is corrosion resistant, which improves the service life of the filter screen barrel 1.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An indoor air sampling auxiliary device, comprising a filter screen barrel (1), characterized in that: A sampling tube (6) is provided above the filter barrel (1). The filter barrel (1) includes a filter (2) and a support assembly (3). Multiple filters (2) are provided, and multiple filters (2) are stacked and connected by the support assembly (3). The support assembly (3) includes a top plate (7) and a support column (8). The support column (8) is welded and fixed at the center of the lower surface of the top plate (7). The support column (8) passes through the center of the filter (2), and the filter (2) moves up and down along the support column (8).

2. An indoor air sampling aid according to claim 1, wherein: A connector (4) is provided at the center of the upper surface of the top plate (7), and the internal air channel of the connector (4) extends downward into the interior of the support column (8). An air inlet (12) is provided on the outer wall of the support column (8) near the top, and the air inlet (12) is interconnected with the connector (4).

3. An indoor air sampling aid according to claim 2, wherein: The top of the connector (4) is provided with a silicone hose (5), and the top of the connector (4) is inserted along one end of the silicone hose (5), and the air inlet of the sampling tube (6) is inserted along the other end of the silicone hose (5). The connector (4) is connected to the sampling tube (6) through the silicone hose (5).

4. An indoor air sampling aid according to claim 2, wherein: The outer surface of the support column (8) is provided with a moving groove (9), and the lower end of the moving groove (9) extends out of the support column (8). One end of the moving groove (9) is provided with a limiting slide groove (11).

5. An indoor air sampling aid according to claim 4, wherein: The moving groove (9) is slidably connected to a support plate (10), and one end of the support plate (10) slides along the limiting groove (11).

6. An indoor air sampling aid according to claim 2, wherein: The lower end of the support column (8) is provided with a stable base plate (13), the upper surface of the stable base plate (13) is provided with a threaded connecting column (14), the center of the lower surface of the support column (8) is provided with a threaded connecting groove (15), and the threaded connecting column (14) is threadedly connected to the threaded connecting groove (15).

7. An indoor air sampling aid according to claim 1, wherein: The support component (3) is made entirely of stainless steel, and the filter screen (2) is also made of stainless steel.

Images