sampling rod

Abstract

The utility model discloses a kind of sampling rods, including quick coupling, filter assembly, gas hose and sampling head, by setting dustproof cotton core and color-changing silica gel particles in the drying tank of filter assembly simultaneously, realize the double filtering effect of dust prevention, drying after, micron grade dustproof cotton core can filter dust impurity in gas, color-changing silica gel particles can absorb water vapor, effectively avoid impurity into probe damage sensor, both ensure the accuracy of detection data, and extend the service life of probe core component, reduce equipment maintenance cost;Through the thread connection structure of outer thread on drying tank and inner thread on connecting sleeve, drying tank and connecting sleeve are conveniently disassembled and assembled, when dustproof cotton core or color-changing silica gel particles fail, connecting sleeve can be quickly opened to complete replacement, simultaneously, the drying tank of transparent material is convenient for operator to visually observe silica gel particle color change, timely judge filter material state, avoid missing filtering function due to material failure, guarantee sampling process continuous and stable.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically a sampling rod. Background Technology

[0002] In the field of gas detection, sampling devices used with handheld detectors often face a number of technical defects, resulting in sampling efficiency, detection accuracy and equipment compatibility that are difficult to meet the actual operation requirements. The environment to be detected often contains impurities such as dust and water vapor. Traditional sampling devices lack efficient filtration and drying structures. After impurities enter the detector with the gas, they are easy to adhere to the surface of the detector sensor, which leads to a decrease in sensor sensitivity, deviation in detection data and damage to the sensor in the long term, shortening the life of the detector. Therefore, we need to propose a sampling rod. Utility Model Content

[0003] The purpose of this invention is to provide a sampling rod that, through the setting of a filtering mechanism, can filter dust impurities in the gas and adsorb water vapor, effectively preventing impurities and water vapor from entering the detector and damaging the sensor, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The sampling rod includes a quick connector, a filter assembly, an air supply hose, and a sampling head. The filter assembly is fixedly installed on the air inlet of the quick connector, the air supply hose is fixedly installed on the air inlet of the filter assembly, and the sampling head is fixedly installed on one end of the air supply hose.

[0006] The filter assembly includes a drying tank, both ends of which are threaded with connecting sleeves. The two sets of connecting sleeves are fixedly installed to the air inlet of the quick connector and one end of the air delivery hose, respectively. The interior of the drying tank contains color-changing silica gel particles and a dustproof cotton core.

[0007] Preferably, the outer walls at both ends of the drying tank are provided with external threads, and the inner walls of the two sets of connecting sleeves are provided with internal threads that are compatible with the external threads, and the internal threads are threadedly connected to the external threads.

[0008] Preferably, a sealing gasket is installed inside the connecting sleeve, and one side of the sealing gasket abuts against the end of the drying tank.

[0009] Preferably, the drying container is a transparent container that is easy to observe.

[0010] Preferably, the quick connector is configured as a three-combination connector module compatible with various commonly used handheld detector interfaces.

[0011] Preferably, the sampling head is configured as a retractable sampling head.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model achieves a dual filtration effect of first preventing dust and then drying by simultaneously setting dustproof cotton core and color-changing silica particles in the drying tank of the filter component. The micron-level dustproof cotton core can filter dust impurities in the gas, and the color-changing silica particles can adsorb water vapor, effectively preventing impurities from entering the detector and damaging the sensor. This ensures the accuracy of the detection data, extends the service life of the detector's core components, and reduces equipment maintenance costs.

[0014] 2. This utility model uses a threaded connection structure between the external thread on the drying tank and the internal thread on the connecting sleeve, which makes it easy to assemble and disassemble the drying tank and the connecting sleeve. When the dustproof cotton core or the color-changing silica gel particles fail, the connecting sleeve can be quickly opened to complete the replacement. At the same time, the transparent material of the drying tank allows the operator to directly observe the color change of the silica gel particles, judge the status of the filter material in time, avoid the loss of filtration function due to material failure, and ensure the continuous stability of the sampling process. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front;

[0016] Figure 2 This is a schematic diagram of the structure of the filter assembly of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the filter assembly of this utility model.

[0018] In the diagram: 1. Quick connector; 2. Filter assembly; 21. Drying tank; 22. Connecting sleeve; 23. Color-changing silica gel granules; 24. Dustproof cotton core; 25. Sealing gasket; 26. External thread; 27. Internal thread; 3. Gas delivery hose; 4. Sampling head. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-3This utility model provides a sampling rod, including a quick connector 1, a filter assembly 2, a gas delivery hose 3, and a sampling head 4. The filter assembly 2 is fixedly installed on the air inlet of the quick connector 1, the gas delivery hose 3 is fixedly installed on the air inlet of the filter assembly 2, and the sampling head 4 is fixedly installed on one end of the gas delivery hose 3. It should be noted that by fixing and connecting the components in the order of sampling head 4, gas delivery hose 3, filter assembly 2, and quick connector 1, a complete gas sampling path is formed, which achieves the effect of allowing the gas to be detected to flow through each functional component in an orderly manner and finally be stably transmitted to the handheld detector.

[0021] The filter assembly 2 includes a drying tank 21, with connecting sleeves 22 threaded onto both ends of the drying tank 21. The two sets of connecting sleeves 22 are fixedly installed to the air inlet of the quick connector 1 and one end of the air supply hose 3, respectively. The interior of the drying tank 21 contains color-changing silica gel particles 23 and a dustproof cotton core 24. It should be noted that by simultaneously setting color-changing silica gel particles 23 and dustproof cotton core 24 inside the drying tank 21, the color-changing silica gel particles 23 change color when exposed to water, and the transparent tank wall is easy to observe, allowing the operator to identify the water source in time and avoid damage to the detector due to misoperation. The dustproof cotton core 24 uses negative pressure micron-level dust prevention, and regular replacement of the cotton core can collect pure gas. Furthermore, the connecting sleeves 22 are used to achieve a stable connection between the drying tank 21 and the quick connector 1 and the air supply hose 3, achieving the effect of absorbing moisture and drying the gas entering the sampling path and filtering dust, thus preventing water vapor and impurities from damaging the detector.

[0022] It is worth noting that the dustproof cotton core 24 is located at one end close to the gas delivery hose 3. The gas first passes through the dustproof cotton core 24 for dust protection and filtration, and then passes through the color-changing silica gel particles 23 for moisture absorption and drying.

[0023] Both ends of the drying tank 21 have external threads 26 on their outer walls, and both sets of connecting sleeves 22 have internal threads 27 that are compatible with the external threads 26 on their inner walls. The internal threads 27 are threadedly connected to the external threads 26. It should be noted that by setting external threads 26 on the outer wall of the drying tank 21 and setting compatible internal threads 27 on the inner wall of the connecting sleeves 22, the threaded connection method facilitates the disassembly and assembly of the drying tank 21 and the connecting sleeves 22, and makes it easier to replace the internal color-changing silica gel particles 23 and dustproof cotton core 24.

[0024] A sealing gasket 25 is installed inside the connecting sleeve 22, and one side of the sealing gasket 25 abuts against the end of the drying tank 21. It should be noted that by installing the sealing gasket 25 inside the connecting sleeve 22 and making the sealing gasket 25 tightly abut against the end of the drying tank 21, the gap between the drying tank 21 and the connecting sleeve 22 is filled, preventing the gas to be tested from leaking and ensuring the accuracy of the sampled gas concentration.

[0025] The drying container 21 is designed to be transparent and easy to observe. It should be noted that by making the drying container 21 transparent, the operator can directly observe the color change of the internal color-changing silica gel particles 23, promptly determine the moisture absorption status of the silica gel, and avoid moisture entering the detector due to silica gel failure.

[0026] Quick connector 1 is configured as a three-combination connector module compatible with various commonly used handheld detector interfaces. It should be noted that by designing quick connector 1 as a three-combination connector module, it is possible to adapt it to handheld detectors of different models and interface specifications, thereby improving the versatility and applicable scenarios of the sampling rod device.

[0027] The sampling head 4 is set as a retractable sampling head. It should be noted that by designing the sampling head 4 as a retractable structure, the operator can flexibly adjust the length of the sampling head according to the sampling environment (such as high altitude, narrow space, etc.), and complete the gas sampling at different locations without the need for additional tools.

[0028] The working principle of this utility model is as follows:

[0029] During gas sampling, the handheld detector is first stably connected to the detector via a three-combination quick connector 1 according to its interface specifications. Then, the operator adjusts the length of the retractable sampling head 4 according to the sampling location requirements, extending it to the area of ​​the gas to be tested. The gas enters the gas delivery hose 3 through the sampling head 4 and is then transported along the hose to the drying canister 21 of the filter assembly 2. The gas first passes through the dustproof cotton core 24, whose micron-level dustproof structure filters out dust and impurities. Next, it flows through color-changing silica gel particles 23, which adsorb moisture from the gas, achieving gas drying. The purified gas, after filtration and drying, enters the quick connector 1 through the connecting sleeve 22 at the other end of the drying canister and is finally transported to the handheld detector, completing the gas detection. During this process, the transparent drying canister 21 allows the operator to observe the color change of the silica gel and determine if replacement is necessary. The threaded connecting sleeve 22 and the sealing gasket 25 ensure convenient component assembly and disassembly and gas transmission sealing, respectively, ensuring a stable and accurate sampling process.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling rod, characterized in that: It includes a quick connector (1), a filter assembly (2), an air delivery hose (3), and a sampling head (4). The filter assembly (2) is fixedly installed on the air inlet of the quick connector (1), the air delivery hose (3) is fixedly installed on the air inlet of the filter assembly (2), and the sampling head (4) is fixedly installed on one end of the air delivery hose (3). The filter assembly (2) includes a drying tank (21), both ends of which are threaded with connecting sleeves (22). The two sets of connecting sleeves (22) are fixedly installed to the air inlet of the quick connector (1) and one end of the air delivery hose (3), respectively. The inside of the drying tank (21) contains color-changing silica gel particles (23) and dustproof cotton core (24).

2. The sampling rod according to claim 1, characterized in that: The drying tank (21) has external threads (26) on both outer walls at both ends, and the inner walls of the two sets of connecting sleeves (22) have internal threads (27) that are compatible with the external threads (26). The internal threads (27) are threadedly connected to the external threads (26).

3. The sampling rod according to claim 1, characterized in that: A sealing gasket (25) is installed inside the connecting sleeve (22), and one side of the sealing gasket (25) abuts against the end of the drying tank (21).

4. The sampling rod according to claim 1, characterized in that: The drying container (21) is configured as a transparent container that is easy to observe.

5. The sampling rod according to claim 1, characterized in that: The quick connector (1) is configured as a three-connector module compatible with various commonly used handheld detector interfaces.

6. The sampling rod according to claim 1, characterized in that: The sampling head (4) is configured as a retractable sampling head.

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