Sampling membrane clamp

Abstract

The utility model discloses a sampling membrane clamp which comprises a membrane support used for placing a sampling membrane and a membrane cover used for pressing the sampling membrane on the membrane support, the membrane support comprises a ventilation face and a side wall, the ventilation face comprises a ventilation portion and a sealing portion, and a first sealing ring is arranged on the sealing portion. The membrane cover comprises a first contact surface and a second contact surface, the first contact surface is matched with the side wall, the second contact surface is matched with the sealing part and is opposite to the first sealing ring, the membrane cover is further provided with a second sealing ring, the second sealing ring can be arranged on the second contact surface or the first contact surface or the side wall, and the first sealing ring and the second sealing ring are matched. The upper and lower surfaces of the sampling film can be sealed, and the problem of inaccurate measurement data caused by the fact that gas bypasses the sampling film is prevented. The technical scheme has the advantages of simple structure, good sealing effect and low manufacturing cost.

Description

Technical Field

[0001] This utility model relates to environmental monitoring equipment, specifically to a sampling membrane clamp. Background Technology

[0002] Air quality monitoring refers to the testing of air quality. Air quality reflects the concentration of pollutants in the air. Air pollution is a complex phenomenon, and the concentration of air pollutants at a specific time and place is affected by many factors. The magnitude of anthropogenic pollutant emissions from stationary and mobile sources is one of the most significant factors affecting air quality, including vehicle, ship, and aircraft exhaust, industrial emissions, residential heating, and waste incineration. Urban density, topography, and meteorology are also important factors influencing air quality.

[0003] Using a particulate matter sampler to sample the atmosphere is a common method for detecting the concentration of particles in the air. Atmospheric samples are collected at a constant flow rate. After the sampled gas passes through a filter membrane, the particulate matter is collected on the filter membrane. The concentration of particulate matter can be obtained by dividing the increase in weight of the filter membrane before and after sampling by the volume of the collected gas.

[0004] During sampling, circular filter membranes are typically placed on a membrane holder for easy insertion and removal. The membrane is then sealed between the membrane cap and the holder. However, existing membrane clamp designs often fail to achieve a complete seal between the membrane cap and holder, allowing gas to bypass the sampling membrane and causing inaccurate measurement data. This results in insufficient airtightness of the detection device, affecting sampling accuracy. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a sampling membrane clamp to address the problem that the membrane cover and membrane holder cannot be completely sealed in the existing air detection process, resulting in inaccurate detection data.

[0006] The present invention achieves the above objectives through the following technical solution: a sampling membrane clip, comprising a membrane holder, a membrane cover, and a sealing ring, wherein a sampling membrane is disposed between the membrane holder and the membrane cover; wherein: the membrane holder comprises a ventilation surface and a side wall, the ventilation surface comprises a ventilation part and a sealing part, the sealing part is disposed on the outside of the ventilation part, the side wall is disposed on the outside of the sealing part, and the sealing ring is disposed on the sealing part.

[0007] The membrane cover includes a first contact surface and a second contact surface. The first contact surface mates with the sidewall, and the second contact surface mates with the sealing part and is opposite to the sealing ring.

[0008] It also includes a second sealing ring, which is disposed on the second contact surface.

[0009] By setting sealing ring one and sealing ring two on the membrane holder and membrane cover, the sampling membrane is sealed between the membrane holder and membrane cover, ensuring that gas will not leak during sampling and increasing the accuracy of the sampling data.

[0010] As a further optimization of this utility model, it also includes a sampling membrane, which includes an air-permeable part and a fixing part. The air-permeable part cooperates with the air-permeable surface, and the fixing part is located between the second contact surface and the sealing part.

[0011] As a further optimization of this utility model, it also includes a sealing groove 1 and a sealing groove 2, with a sealing ring 1 disposed in the sealing groove 1 and a sealing ring 2 disposed in the sealing groove 2. The sealing ring 1 and the sealing groove 1 are interference-fitted, and the sealing ring 2 and the sealing groove 2 are interference-fitted.

[0012] A sampling membrane clip includes a membrane holder, a membrane cover, and a sealing ring. The membrane holder and the membrane cover are used to place a sampling membrane. The membrane holder includes a ventilation surface and a side wall. The ventilation surface includes a ventilation part and a sealing part. The sealing part is disposed on the outside of the ventilation part. The side wall is disposed on the outside of the sealing part and is sealed to the ventilation surface. The sealing ring is disposed on the sealing part.

[0013] The membrane cover includes a first contact surface and a second contact surface. The first contact surface mates with the sidewall, and the second contact surface mates with the sealing part and is opposite to the sealing ring.

[0014] It also includes a second sealing ring, which is disposed on the first contact surface or the side wall to create a sealed connection between the first contact surface and the side wall. By providing the second sealing ring on the side wall, the long-term connection between the membrane holder and the membrane cover can be effectively guaranteed without detachment.

[0015] As a further optimization of this utility model, the ventilated surface and the sidewall are integrally formed. This integral forming design avoids the problem of poor airtightness.

[0016] As a further optimization of this utility model, a sampling membrane is also included. The sampling membrane includes a breathable portion and a fixing portion. The breathable portion cooperates with the ventilation surface, and the fixing portion is located between the second contact surface and the sealing portion. By providing the breathable portion and the fixing portion, the sampling membrane can be better fixed between the membrane holder and the membrane cover.

[0017] As a further optimization of this utility model, it also includes a sealing groove 1, a sealing groove 2, a sealing ring 1 disposed in the sealing groove 1, a sealing ring 2 disposed in the sealing groove 2, the sealing ring 1 and the sealing groove 1 being interference fit, and the sealing ring 2 and the sealing groove 2 being interference fit.

[0018] Beneficial effects: The filter membrane sealing clamp of this utility model effectively seals the sampling membrane between the membrane holder and the membrane cover by setting sealing ring one and sealing ring two respectively. Sealing ring one and sealing ring two prevent the gas to be tested from flowing out from the side of the membrane holder and the membrane cover, ensuring that the gas to be tested can pass through the filter membrane and ensuring the accuracy of the test. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram of the cooperation between the membrane holder and the membrane cover in Embodiment 2 of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0022] Figure 4 This is a schematic diagram of the present invention in conjunction with a sampling device;

[0023] 1-Membrane holder, 2-Membrane cover, 3-Sampling membrane, 4-Sealing ring one, 5-Sealing ring two, 6-Sealing groove one, 7-Sealing groove two, 11-Ventilation surface, 12-Side wall, 21-First contact surface, 22-Second contact surface, 31-Ventilation part, 32-Fixing part, 111-Ventilation part, 112-Sealing part. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example 1

[0026] like Figure 1 The sampling membrane clamp shown includes a membrane holder 1, a membrane cover 2, and a sealing ring 4. A sampling membrane is positioned between the membrane holder 1 and the membrane cover 2, allowing gas to pass through the middle of the sampling membrane for data collection. The sealing ring 4 is located on the membrane holder 1 to ensure a tight seal between the membrane holder 1 and the sampling membrane, preventing gas from bypassing the sampling membrane and causing inaccurate measurement data.

[0027] The membrane support 1 includes a ventilation surface 11 and a side wall 12. The ventilation surface 11 includes a ventilation part 111 and a sealing part 112. The sealing part 112 is disposed on the outside of the ventilation part 111, the side wall 12 is disposed on the outside of the sealing part 112, and the sealing ring 4 is disposed on the sealing part 112.

[0028] The membrane cover 2 includes a first contact surface 21 and a second contact surface 22. The first contact surface 21 mates with the side wall 12, and the second contact surface 22 mates with the sealing part 112 and is opposite to the sealing ring 4. The sampling membrane 3 includes a breathable part 31 and a fixing part 32. The breathable part mates with the venting surface 11, and the fixing part is located between the second contact surface 22 and the sealing part 112.

[0029] To achieve a better seal between the membrane holder 1 and the membrane cover 2, a second sealing ring 5, a first sealing groove 6, and a second sealing groove 7 are also included. In this embodiment, the first sealing groove 6 is disposed on the sealing part 112, and the first sealing ring 4 is disposed within the first sealing groove 6, with the first sealing ring 4 and the first sealing groove 6 being interference-fitted. The second sealing groove 7 is disposed on the second contact surface 22, and the second sealing ring 5 is disposed within the second sealing groove 7, with the second sealing ring 5 and the second sealing groove 7 being interference-fitted. By setting the first sealing ring 4 and the second sealing ring 5, the first sealing ring 4 and the second sealing ring 5 effectively seal the sampling membrane between the membrane holder 1 and the membrane cover 2, ensuring that sampling will not leak and affect the accuracy of the sampling data. This design has a simple structure and effectively reduces design costs.

[0030] In use, the sampling membrane is placed on the membrane holder 1, the membrane cover 2 is closed, and then the entire membrane clamp is placed on the sampling device and sealed to the sampling device for sampling. Figure 4 As shown.

[0031] Example 2

[0032] As shown in Example 1, a sampling membrane clip is distinguished by the following features: Figure 2 and 3 In this embodiment, the second sealing ring 5 and the second sealing groove 7 are disposed on the first contact surface 21, so that the first contact surface 21 and the side wall 12 are sealed together. Figure 2 , Figure 3 As shown. To ensure airtightness, the ventilation surface 11 and the side wall 12 are integrally formed. Furthermore, by setting a sealing ring 5 on the first contact surface 21, the friction between the membrane cover 2 and the membrane support side wall 12 can be increased, preventing the membrane support 1 from separating from the membrane cover 2 during the testing process.

[0033] Example 3

[0034] As shown in Example 1, the sampling membrane clamp is distinguished in that, in this embodiment, the sealing ring 2 5 and the sealing groove 2 7 are disposed on the side wall 12.

[0035] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A sampling membrane clamp, comprising a membrane holder (1), a membrane cover (2), and a sealing ring (4), wherein a sampling membrane is disposed between the membrane holder (1) and the membrane cover (2); characterized in that: The membrane support (1) includes a ventilation surface (11) and a side wall (12). The ventilation surface (11) includes a ventilation part (111) and a sealing part (112). The sealing part (112) is located outside the ventilation part (111), the side wall (12) is located outside the sealing part (112), and a sealing ring (4) is located on the sealing part (112). The membrane cover (2) includes a first contact surface (21) and a second contact surface (22). The first contact surface (21) is engaged with the side wall (12), and the second contact surface (22) is engaged with the sealing part (112) and is opposite to the sealing ring (4). It also includes a second sealing ring (5), which is disposed on the second contact surface (22).

2. The sampling membrane clip as described in claim 1, characterized in that: It also includes a sampling membrane (3), which includes a breathable part (31) and a fixing part (32). The breathable part (31) cooperates with the ventilation surface (11), and the fixing part (32) is located between the second contact surface (22) and the sealing part (112).

3. The sampling membrane clip as described in claim 1, characterized in that: It also includes a sealing groove 1 (6) and a sealing groove 2 (7). A sealing ring 1 (4) is set in the sealing groove 1 (6) and a sealing ring 2 (5) is set in the sealing groove 2 (7). The sealing ring 1 (4) is interference-fitted with the sealing groove 1 (6) and the sealing ring 2 (5) is interference-fitted with the sealing groove 2 (7).

4. A sampling membrane clamp, comprising a membrane holder (1), a membrane cover (2), and a sealing ring (4), wherein a sampling membrane is disposed between the membrane holder (1) and the membrane cover (2); characterized in that: The membrane support (1) includes an air vent (11) and a side wall (12). The air vent (11) includes an air vent (111) and a sealing part (112). The sealing part (112) is located outside the air vent (111), and the side wall (12) is located outside the sealing part (112) and is sealed to the air vent (11). A sealing ring (4) is located on the sealing part (112). The membrane cover (2) includes a first contact surface (21) and a second contact surface (22). The first contact surface (21) is engaged with the side wall (12), and the second contact surface (22) is engaged with the sealing part (112) and is opposite to the sealing ring (4). It also includes a second sealing ring (5), which is disposed on the first contact surface (21) or the side wall (12) to make the first contact surface (21) and the side wall (12) sealed together.

5. The sampling membrane clip as described in claim 4, characterized in that: The ventilation surface (11) and the side wall (12) are integrally formed.

6. The sampling membrane clip as described in claim 4, characterized in that: It also includes a sampling membrane (3), which includes a breathable part (31) and a fixing part (32). The breathable part (31) cooperates with the ventilation surface (11), and the fixing part (32) is located between the second contact surface (22) and the sealing part (112).

7. The sampling membrane clip as described in claim 4, characterized in that: It also includes a sealing groove 1 (6), a sealing groove 2 (7), a sealing ring 1 (4) disposed in the sealing groove 1 (6), a sealing ring 2 (5) disposed in the sealing groove 2 (7), the sealing ring 1 (4) and the sealing groove 1 (6) are interference fit, and the sealing ring 2 (5) and the sealing groove 2 (7) are interference fit.

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