Portable gas sampler for occupational health

Abstract

The application relates to a portable gas sampler for occupational health, which comprises a sampler body, a gas suction pump fixed in the sampler body, an air inlet pipe fixed to the gas suction pump and an air guide pipe, a supporting plate is fixed to the outer wall of the sampler body, a sampling bag is slidably inserted into the upper end of the supporting plate, a guide pipe is fixed to the upper end of the sampling bag in a penetrating mode, and the upper end of the guide pipe is attached to the lower end of the air guide pipe; a sleeve is vertically and slidably connected to the lower end of the air guide pipe, a sealing sleeve is fixed to the inner wall of the sleeve, and the sleeve is connected to the outer wall of the upper end of the guide pipe; the sealing sleeve can slide up and down, can accurately wrap the connecting part of the guide pipe and the air guide pipe before air collection, can form reliable sealing, can effectively avoid air leakage during collection, can ensure that the collected air sample can truly reflect the on-site environment, can improve the accuracy of sampling data, and can provide reliable basis for subsequent occupational health detection.

Description

Technical Field

[0001] This application relates to the field of gas sampling technology, and in particular to a portable gas sampler for occupational health. Background Technology

[0002] In the field of occupational health and environmental monitoring, gas sampling is a technical means to collect toxic and harmful gases or volatile organic compounds that are released into the air during the storage, transportation and treatment of wastewater in specific occupational scenarios such as chemical, pharmaceutical, printing and dyeing and electroplating industries. Its core purpose is to assess the concentration of air pollutants, protect the health of occupational groups and verify the effectiveness of pollution control.

[0003] A related patent, such as the utility model patent for a portable gas sampler for occupational health with application number 202420251813.7, includes a sampler body, a gas sampling bag, and a support mechanism. The support mechanism includes a mounting shell, a rotating component, a mounting frame, and a support plate. It discloses that air from occupational health sites is sent into the sampling bag through a gas guide tube for collection by working with an air pump.

[0004] To prevent the sampling bag from detaching from the air duct during the collection of air from occupational health facilities, the aforementioned patent includes a rotatable support plate at the bottom of the sampling bag. However, the support plate needs to be driven to rotate by components such as a servo motor and a handle. Each time the sampling bag is installed or removed, the servo motor needs to be started to control the rotation of the support plate, which is inconvenient and consumes electrical energy to start the servo motor. If the servo motor malfunctions, it will cause inconvenience in supporting the sampling bag.

[0005] Therefore, those skilled in the art have provided a portable gas sampler for occupational health to address the problems mentioned in the background art. Utility Model Content

[0006] To address the problems mentioned in the background art, this application provides a portable gas sampler for occupational health. Through a sliding sealing sleeve, it precisely wraps the connection between the conduit and the gas delivery tube before air collection, forming a reliable seal. This effectively prevents air leakage during collection, ensuring that the collected air sample truly reflects the on-site environment, improving the accuracy of the sampling data, and providing a reliable basis for subsequent occupational health testing.

[0007] The portable gas sampler for occupational health provided in this application adopts the following technical solution:

[0008] A portable gas sampler for occupational health includes a sampler body, an air pump fixed inside the sampler body, an air inlet pipe fixed to the air pump, and an air guide pipe. A support plate is fixed to the outer wall of the sampler body. A sampling bag is slidably inserted into the upper end of the support plate. A guide tube is fixed through the upper end of the sampling bag. The upper end of the guide tube is attached to the lower end of the air guide pipe.

[0009] The lower end of the air duct is vertically slidably connected to a sleeve, and a sealing sleeve is fixed to the inner wall of the sleeve. The sealing sleeve is connected to the outer wall of the upper end of the duct.

[0010] In this invention, compared with the existing technology that relies on complex components such as servo motors and grips to drive the support plate, this device greatly simplifies the structure by combining a fixed support plate with a sliding sealing sleeve, reducing the number of vulnerable parts and lowering the manufacturing and maintenance costs of the equipment; at the same time, the simple operation method reduces the difficulty of personnel training.

[0011] Preferably, the right side of the support plate is detachably connected to a connecting plate for supporting the sampling bag.

[0012] Preferably, insert plates are fixed on both sides of the end of the connecting plate, and connecting grooves are opened on both sides of the right end of the support plate, and the insert plates are slidably inserted into the connecting grooves.

[0013] Preferably, the sleeve has a T-shaped cross-section, and a spring is fixed between the upper end of the sealing sleeve and the outer wall of the air guide tube.

[0014] Preferably, the upper end of the support plate has a groove, and two sampling bags are slidably inserted into the groove.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. This application uses a sliding sealing sleeve to precisely wrap the connection between the conduit and the air delivery tube before air collection, forming a reliable seal. This effectively prevents air leakage during collection, ensures that the collected air sample truly reflects the on-site environment, improves the accuracy of the sampling data, and provides a reliable basis for subsequent occupational health testing.

[0017] 2. After air sampling is completed, simply slide the upper sleeve to detach the sealing sleeve from the conduit, then move the sampling bag horizontally to detach it from the support plate. Finally, seal the upper end of the conduit with the sealing cap to complete the disassembly. When replacing the sampling bag, simply push the new sampling bag on the support plate to the lower end of the air duct for connection. The entire operation does not require complex components, is simple and efficient, significantly shortens the sampling bag replacement time, and improves the overall sampling efficiency.

[0018] 3. The support plate is fixedly connected to the outer wall of the sampler body, which can provide stable support for the sampling bag and prevent the connection between the tube and the air tube from loosening and falling off during the sampling process due to unstable support. At the same time, the sealing sleeve further strengthens the connection structure, reduces the risk of sampling interruption and sample loss, and ensures a stable and orderly sampling process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this application;

[0020] Figure 2 This is a schematic diagram of the air tube and catheter of this application;

[0021] Figure 3 This is a schematic diagram of the support plate and connecting plate of this application;

[0022] Figure 4 This is a schematic diagram of the sleeve and sealing sleeve of this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Air inlet pipe; 2. Sampler body; 3. Air guide pipe; 4. Sleeve; 5. Sampling bag; 6. Guide tube; 7. Support plate; 8. Air pump; 9. Spring; 10. Connecting groove; 11. Groove; 12. Connecting plate; 13. Insert plate; 14. Sealing sleeve. 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 Figures 1 to 4 As shown, this application discloses a portable gas sampler for occupational health, including a sampler body 2, an air pump 8 fixed inside the sampler body 2, an air inlet pipe 1 fixed to the air pump 8, and an air guide pipe 3. When collecting occupational health air, the air pump 8 draws air in through the air inlet pipe 1, then sends it through the air guide pipe 3 into the conduit 6, and finally sends the air into the sampling bag 5 for collection. A support plate 7 is fixed to the outer wall of the sampler body 2, and the sampling bag 5 is slidably inserted into the upper end of the support plate 7. The conduit 6 is fixed through the upper end of the sampling bag 5, and the upper end of the conduit 6 is attached to the lower end of the air guide pipe 3. A sleeve 4 is vertically slidably connected to the lower end of the air guide pipe 3, and a sealing sleeve 14 is fixed to the inner wall of the sleeve 4. The sealing sleeve 14 is connected to the upper outer wall of the conduit 6.

[0026] By adopting the above technical solution, when collecting air for occupational health, the sampling bag 5 is supported by the support plate 7, so that the upper end of the tube 6 on the sampling bag 5 is connected to the lower end of the air duct 3, allowing the air inside the air duct 3 to enter the sampling bag 5 from the tube 6. Before collecting air, the sleeve 4 is moved down, causing the sealing sleeve 14 to slide down and fit on the outer wall of the upper end of the tube 6, so that the connection between the upper end of the tube 6 and the lower end of the air duct 3 is wrapped inside the sealing sleeve 14 to seal it and prevent air leakage during collection. The sampling bag 5 is also supported by the support plate 7 to prevent the connection between the tube 6 and the air duct 3 from loosening and falling off.

[0027] When air sampling is complete, the upper sleeve 4 moves the sealing sleeve 14 upward to disengage from the conduit 6, allowing the sampling bag 5 to move horizontally away from the support plate 7. This moves the conduit 6 away from the lower end of the air duct 3, and the upper end of the conduit 6 is sealed by a sealing cap (not shown in the figure, using an internal thread that can be threadedly connected to the conduit 6). This facilitates the removal of the sampling bag 5 after air sampling. At this point, another sampling bag 5 on the support plate 7 can be pushed to the lower end of the air duct 3, so that the upper end of the conduit 6 on the sampling bag 5 aligns with the lower end of the air duct 3, allowing the next sampling bag 5 to be sampled. This avoids the previous method of using a servo motor, handle, or other components to drive the support plate 7 to rotate and support the sampling bag 5. In this application, the support plate 7 is fixed to the outer wall of the sampler body 2 to support the sampling bag 5. The connection between the conduit 6 and the air duct 3 is sealed by a sealing sleeve 14 that can slide up and down, which not only prevents the sampling bag 5 from falling off during air sampling but also facilitates the removal of the sampling bag 5 after sampling.

[0028] To facilitate the placement of multiple sampling bags 5, a connecting plate 12 for supporting the sampling bags 5 is detachably connected to the right side of the support plate 7. Insert plates 13 are fixed on both sides of the end of the connecting plate 12. Connecting grooves 10 are opened on both sides of the right end of the support plate 7. The insert plates 13 are slidably inserted into the connecting grooves 10. When multiple sampling bags 5 need to be sampled for air, the support plate 7 and the connecting plate 12 can be spliced ​​together by inserting the insert plates 13 into the connecting grooves 10, and multiple sampling bags 5 can be placed on the support plate 7 and the connecting plate 12.

[0029] To facilitate manual up-and-down movement of the sleeve 4, the sleeve 4 has a T-shaped cross-section. A spring 9 is fixed between the upper end of the sealing sleeve 14 and the outer wall of the air guide tube 3 to support the sealing sleeve 14.

[0030] To facilitate the positioning of the sampling bag 5, a groove 11 is provided at the upper end of the support plate 7, and two sampling bags 5 are slidably inserted into the groove 11.

[0031] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0032] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0033] Working principle: When collecting air samples for occupational health purposes, the sampling bag 5 is supported by the support plate 7, so that the upper end of the conduit 6 on the sampling bag 5 is connected to the lower end of the air delivery tube 3, allowing air inside the air delivery tube 3 to enter the sampling bag 5 through the conduit 6. Before collecting air, the sleeve 4 is moved down, causing the sealing sleeve 14 to slide down and fit onto the outer wall of the upper end of the conduit 6, so that the connection between the upper end of the conduit 6 and the lower end of the air delivery tube 3 is wrapped inside the sealing sleeve 14, sealing the connection and preventing air leakage during collection. The support plate 7 also supports the sampling bag 5 to prevent the connection between the conduit 6 and the air delivery tube 3 from loosening and falling off.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable gas sampler for occupational health, comprising a sampler body (2), a suction pump (8) fixed inside the sampler body (2), an air inlet pipe (1) fixed to the suction pump (8), and a gas guide pipe (3), characterized in that: The sampler body (2) has a support plate (7) fixed on its outer wall. A sampling bag (5) is slidably inserted into the upper end of the support plate (7). A conduit (6) is fixed through the upper end of the sampling bag (5). The upper end of the conduit (6) is attached to the lower end of the air duct (3). The lower end of the air duct (3) is vertically slidably connected to a sleeve (4), and a sealing sleeve (14) is fixed on the inner wall of the sleeve (4). The sealing sleeve (14) is connected to the outer wall of the upper end of the conduit (6).

2. The portable gas sampler for occupational health according to claim 1, characterized in that: The right side of the support plate (7) is detachably connected to a connecting plate (12) for supporting the sampling bag (5).

3. A portable gas sampler for occupational health according to claim 2, characterized in that: The connecting plate (12) has a plug plate (13) fixed on both sides of its end. The support plate (7) has a connecting groove (10) on both sides of its right end. The plug plate (13) slides into the connecting groove (10).

4. A portable gas sampler for occupational health according to claim 1, characterized in that: The sleeve (4) has a T-shaped cross-section, and a spring (9) is fixed between the upper end of the sealing sleeve (14) and the outer wall of the air guide tube (3).

5. A portable gas sampler for occupational health according to claim 1, characterized in that: The upper end of the support plate (7) is provided with a groove (11), and two sampling bags (5) are slidably inserted into the groove (11).

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