Sampling device and method

Abstract

The invention discloses a sampling device and method, and the sampling device comprises a sampling tube which comprises a liquid inlet and a liquid outlet; the valve is arranged on the sampling pipe and is close to the liquid outlet; the spherical air bag is arranged on the sampling tube and is positioned between the valve and the liquid inlet; the spherical air bag is made of a high-strength and corrosion-resistant elastic material; the first one-way valve is arranged at the liquid inlet end of the spherical air bag and used for preventing liquid from flowing back when the spherical air bag sucks the liquid. The sampling device provided by the invention can be directly used for sampling high-risk materials such as strong acid, strong alkali and organic liquid, the sampling efficiency is improved, the cost is reduced, and meanwhile, the safety of the sampling process and the high purity of a sample are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical or physical analysis, and in particular to a sampling device and method. Background Art

[0002] In the fields of semiconductors, industrial production, laboratory research, etc., it is necessary to extract individuals or samples from the population for testing or observation. Among them, the sampling of liquid materials is an important operation before analysis and testing. The accuracy of sampling directly affects the analysis results of material properties, especially when the density of the liquid is uneven at different depths, the representativeness of the sampling is particularly important. In order to solve the limitations of manual sampling, researchers and technicians are committed to developing automatic sampling devices. These advanced automatic sampling devices have significantly reduced the labor intensity of operators to a certain extent, and improved the representativeness of samples and the accuracy of sampling. However, although the time-controlled automatic sampling devices on the current market have their advantages, they also face the challenges of high maintenance costs and easy blockage problems that lead to material accumulation and mixing, which in turn causes sample contamination.

[0003] In contrast, manual sampling shows greater flexibility and applicability in certain specific situations, such as complex environments or when sampling points are not fixed. Operators can flexibly adjust the sampling location and time according to the actual situation on site to cope with various complex situations. However, it is worth noting that some sampling devices may pose safety hazards due to their complex design and cumbersome operation, especially in low temperature environments in winter. For example, sampling devices containing metal structures may introduce metal ions into the sample during the sampling process, causing sample contamination. In addition, product overflow and splashing often occur during the sampling process, which not only leads to waste of raw materials, but also may pose a serious threat to the safety of sampling technicians. Summary of the invention

[0004] The object of the present invention is to provide a strong acid / strong alkali / organic liquid direct raw material sampling device and method which is simple in structure, easy to carry, clean, efficient and safe, reduces resource waste and reduces pollution risk.

[0005] In order to solve the above problems, the present invention is implemented by the following technical solutions:

[0006] A sampling device comprises: a sampling tube, which comprises a liquid inlet and a liquid outlet; a valve, which is arranged on the sampling tube and close to the liquid outlet; a spherical airbag, which is arranged on the sampling tube and located between the valve and the liquid inlet; the spherical airbag is made of a high-strength and corrosion-resistant elastic material; a first one-way valve, which is arranged at the liquid inlet end of the spherical airbag and is used to prevent liquid reflux when the spherical airbag inhales liquid.

[0007] Optionally, it also includes: a second one-way valve, which is arranged at the liquid outlet end of the spherical airbag and is used to ensure that the liquid can be discharged in one direction when the spherical airbag discharges the liquid.

[0008] Optionally, the sampling device is made of PFA material.

[0009] Optionally, the sampling tube and the valve, the sampling tube and the spherical airbag are all connected via a high-seal ferrule joint.

[0010] Optionally, the valve is a ball valve or a butterfly valve.

[0011] Optionally, the first one-way valve and / or the second one-way valve is a gravity one-way valve.

[0012] Optionally, the ferrule connector is a quick-insert ferrule connector.

[0013] Optionally, it further comprises: a fixing clip, which is arranged on the sampling tube; the fixing clip is used to fix the sampling device on the container containing the raw material.

[0014] Optionally, the fixing clamp is arranged between the spherical airbag and the liquid inlet of the sampling tube.

[0015] Optionally, the fixing clamp comprises a tube sleeve and a clamping plate assembly; the tube sleeve is sleeved on the sampling tube; the clamping plate assembly is arranged on the tube sleeve; the clamping plate assembly is used to fix the sampling device on a container containing raw materials.

[0016] Optionally, the clamping plate assembly includes: two clamping plates arranged on the pipe sleeve and parallel to each other, any one of the two clamping plates being provided with a screw hole; and a fixing bolt passing through the screw hole.

[0017] Optionally, an anti-slip pad is provided on the clamping plate of the fixing clamp.

[0018] On the other hand, the present invention also provides a sampling method, which is implemented by using the sampling device as described above, comprising:

[0019] Insert the liquid inlet of the sampling tube and immerse it completely in the liquid to be sampled;

[0020] Start squeezing the spherical airbag, using the compressibility of the spherical airbag to generate suction, so that the taken liquid is sucked into the spherical airbag;

[0021] Open the valve, adjust the liquid flow rate, and discharge the taken liquid unidirectionally from the liquid outlet.

[0022] Optionally, it also includes:

[0023] Before sampling the liquid, adjust the position of the fixing clamp on the sampling tube so that it is clamped on the container wall of the sampled liquid, and then perform subsequent liquid sampling operations.

[0024] Optionally, the liquid is a strong acid, a strong base or an organic liquid.

[0025] The present invention has at least the following technical effects:

[0026] The sampling device provided by the present invention has a simple structure, a simple manufacturing method, is easy to carry, and is convenient and quick to sample and easy to clean, thereby saving time and labor costs, and has high efficiency, safety and anti-pollution performance during the sampling process, and can also effectively reduce the waste of solvents. The sampling device provided by the present invention is also suitable for safe and pollution-free raw material sampling in industries such as semiconductor manufacturing, chemical production, laboratory research, and food processing.

[0027] The spherical airbag of the present invention is made of high-strength and corrosion-resistant elastic material, ensuring good sealing and durability when facing highly corrosive chemicals.

[0028] The first one-way valve of the present invention can effectively prevent liquid from flowing back and ensure the purity of the sample.

[0029] The second one-way valve of the present invention can ensure that the sampled liquid can be discharged in one direction, further improving safety.

[0030] The sampling tube and the valve, the sampling tube and the spherical airbag of the present invention are connected via a highly sealed ferrule joint. This connection method is not only convenient for installation, but also can effectively prevent chemicals from leaking and causing harm to the environment or personnel.

[0031] The sampling devices of the present invention are all made of high-performance PFA (polytetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer) material. This material not only has excellent corrosion resistance and high temperature resistance, but also can effectively avoid metal ion contamination problems in many key fields such as semiconductor manufacturing, high-end chemical production and precision laboratory research. This is crucial to ensuring sample purity and improving the accuracy of test results.

[0032] The sampling method provided by the present invention can protect the staff and the surrounding environment by using the sampling device described above, and effectively isolate the direct contact and potential hazards of toxic and highly corrosive media. During the sampling process, by optimizing the sealing structure and path management, the channels for accidental leakage of samples into the atmosphere are significantly reduced, thereby greatly reducing the emission of volatile harmful substances, which plays a positive role in environmental protection. In addition, since the sampling device pursues extreme simplicity in structural design, it is not only small in size and easy to carry to various complex sites, but also adopts an easy-to-disassemble design, making the cleaning process more convenient and efficient. At the same time, its modular structure greatly simplifies the maintenance and maintenance steps, ensuring that the sampling device can maintain a stable and efficient working state during long-term use. Therefore, the application of the sampling device not only significantly saves the time cost caused by repeated cleaning and replacement of parts, but also effectively reduces raw material consumption and manpower investment, bringing substantial economic benefits to enterprises and scientific research institutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of a sampling device provided in one embodiment of the present invention;

[0034] Figure identification: 100 - sampling tube, 101 - liquid inlet, 102 - liquid outlet, 200 - valve, 301 - first one-way valve, 302 - second one-way valve, 400 - spherical airbag, 500 - fixing clamp, 501 - pipe sleeve, 502 - first clamp, 503 - second clamp, 504 - fixing bolt. DETAILED DESCRIPTION

[0035] The following is a further detailed description of a sampling device and method proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purposes, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the accompanying drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change in the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0036] like Figure 1As shown, this embodiment provides a sampling device, including: a sampling tube 100, which includes a liquid inlet 101 and a liquid outlet 102; a valve 200, the valve 200 is arranged on the sampling tube 100 and is arranged close to the liquid outlet; a spherical airbag 400, the spherical airbag 400 is arranged on the sampling tube 100, and is located between the valve 200 and the liquid inlet; the spherical airbag 400 is made of a high-strength and corrosion-resistant elastic material; a first one-way valve 301, which is arranged at the liquid inlet end of the spherical airbag 400, and is used to prevent liquid reflux when the spherical airbag 400 inhales liquid.

[0037] The sampling device provided in this embodiment has a simple structure, a simple manufacturing method, is easy to carry, and is convenient and quick to sample and easy to clean, thereby saving time and labor costs. It also has high efficiency, safety and anti-pollution performance during the sampling process, and can effectively reduce the waste of solvents. The sampling device provided in this embodiment is also suitable for safe and pollution-free raw material sampling in industries such as semiconductor manufacturing, chemical production, laboratory research, and food processing. The sampling device provided in this embodiment can be directly used for sampling high-risk materials such as strong acids, strong bases, and organic liquids, improves sampling efficiency, reduces costs, and ensures the safety of the sampling process and the high purity of the sample, thereby meeting the urgent needs of the above-mentioned industries.

[0038] The spherical airbag 400 of this embodiment is made of a high-strength and corrosion-resistant elastic material, ensuring good sealing and durability when facing highly corrosive chemicals.

[0039] The first one-way valve 301 of this embodiment can effectively prevent liquid backflow and ensure the purity of the sample.

[0040] In this embodiment or another embodiment, please continue to refer to Figure 1 As shown, the sampling device further includes: a second one-way valve 302, which is arranged at the liquid outlet end of the spherical airbag 400, and is used to ensure that the liquid can be discharged in one direction when the spherical airbag 400 discharges the liquid, thereby further improving the safety of sampling.

[0041] In this embodiment, the material of the sampling device is PFA material. Specifically, the material of the sampling tube 100, the valve 200, the first one-way valve 301 and the second one-way valve 302 is PFA material. The sampling device of this embodiment is all made of high-performance PFA material, which not only has excellent corrosion resistance and high temperature resistance, but also can effectively avoid metal ion contamination in many key fields such as semiconductor manufacturing, high-end chemical production and precision laboratory research, which is very important for ensuring sample purity and improving the accuracy of test results.

[0042] In this embodiment or some other embodiments, the sampling tube 100 and the valve 200, the sampling tube 100 and the spherical airbag 400 are connected by a highly sealed ferrule joint (not shown in the figure). This connection method is not only convenient for installation, but also can effectively prevent the leakage of chemicals from causing harm to the environment or personnel.

[0043] Preferably, the ferrule connector is a quick-insert ferrule connector, which can quickly connect and disconnect the sampling tube 100, the valve 200 and the spherical airbag 400, and facilitates the assembly and disassembly of the sampling device.

[0044] In this embodiment or some other embodiments, the valve 200 is a ball valve or a butterfly valve, which can adjust the flow rate of the liquid at the liquid outlet 102 .

[0045] In this embodiment or some other embodiments, the first one-way valve 301 and / or the second one-way valve 302 is a gravity one-way valve, which can effectively prevent liquid backflow, ensure the purity of sampling, and further improve the safety of sampling.

[0046] In this embodiment or some other embodiments, it further includes: a fixing clamp 500, which is arranged on the sampling tube 100; the fixing clamp 500 is used to fix the sampling device on the container containing the raw material.

[0047] This embodiment achieves sampling of liquids at different depths by adjusting the position of the fixing clamp. The sampling device provided by this embodiment has flexibility and applicability, and can flexibly adjust the sampling position and time according to actual conditions, especially in complex environments or when the sampling point is not fixed.

[0048] In this embodiment, the fixing clamp 500 is disposed between the spherical airbag 400 and the liquid inlet 101 of the sampling tube 100. The location of the fixing clamp 500 can be adjusted as needed, as long as the sampling device is fixed on the container containing the raw material, and the present invention is not limited thereto.

[0049] In this embodiment or some other embodiments, please continue to refer to Figure 1 As shown, the fixing clamp 500 includes a tube sleeve 501 and a clamping plate assembly; the tube sleeve 501 is sleeved on the sampling tube 100; the clamping plate assembly is arranged on the tube sleeve 501; the clamping plate assembly is used to fix the sampling device on the container containing the raw material.

[0050] In this embodiment or some other embodiments, please continue to refer to Figure 1 As shown, the clamping plate assembly includes: two clamping plates (see Figure 1As shown in the first clamping plate 502 and the second clamping plate 503, any one of the two clamping plates is provided with a screw hole; a fixing bolt 504, and the fixing bolt 504 passes through the screw hole.

[0051] Optionally, in this embodiment or some other embodiments, a non-slip pad ( Figure 1 (not shown in the figure), it can be understood that the first clamping plate 501 and / or the second clamping plate 502 are provided with anti-skid pads, and the anti-skid pads are located on the opposite surfaces of the two clamping plates to increase the friction between the clamping plates and the container containing liquid (the wall of the container) to prevent the sampling tube 100 from slipping during the liquid collection process.

[0052] On the other hand, this embodiment further provides a sampling method, which is implemented by using the sampling device as described above, comprising:

[0053] The liquid inlet 101 of the sampling tube 100 is inserted and completely immersed in the sampled liquid.

[0054] That is, the liquid inlet of the sampling tube 1 is inserted below the liquid level of the liquid to be taken, ensuring that the liquid inlet 101 is completely immersed so that the liquid can be sucked smoothly.

[0055] The spherical airbag 400 is squeezed to generate suction force by using the compressibility of the spherical airbag 400, so that the taken liquid is sucked into the spherical airbag 400;

[0056] The valve 200 is opened to adjust the liquid flow rate, and the taken liquid is discharged unidirectionally from the liquid outlet 102 , that is, the taken liquid is collected from the liquid outlet 102 .

[0057] The collected liquid flows through the interior of the spherical airbag 400, through the channel of the opened valve 200, and finally along the path of the sampling tube 100, and is discharged stably and unidirectionally from the liquid outlet 102. Even after the sampling is completed, it will not flow back into the container, reducing the risk of contaminating the liquid in the container.

[0058] In this embodiment, the method further includes: before liquid sampling, adjusting the position of the fixing clamp on the sampling tube 100 so that it is firmly clamped on the container wall of the sampled liquid to ensure that it is firm and does not shake, and then performing subsequent liquid sampling operations. In this embodiment, the sampled liquid is a strong acid, a strong base or an organic liquid.

[0059] The sampling method provided in this embodiment can protect the staff and the surrounding environment by using the sampling device described above, and effectively isolate the direct contact and potential hazards of toxic and highly corrosive media. During the sampling process, by optimizing the sealing structure and path management, the channels for accidental leakage of samples into the atmosphere are significantly reduced, thereby greatly reducing the emission of volatile harmful substances, which plays a positive role in environmental protection. In addition, since the sampling device pursues extreme simplicity in structural design, it is not only small in size and easy to carry to various complex sites, but also adopts an easy-to-disassemble design, making the cleaning process more convenient and efficient. At the same time, its modular structure greatly simplifies the maintenance and maintenance steps, ensuring that the sampling device can maintain a stable and efficient working state during long-term use. Therefore, the application of the sampling device not only significantly saves the time cost caused by repeated cleaning and replacement of parts, but also effectively reduces raw material consumption and manpower investment, bringing substantial economic benefits to enterprises and scientific research institutions.

[0060] In summary, the sampling device provided by the present invention is a direct sampling device for strong acid / strong base / organic liquid, which is used for liquid sampling and detection in the fields of semiconductors, industrial production, laboratory research, etc. The sampling device provided by the present invention has the following technical effects: the original sampling process of multiple people carrying to a unified sampling device is changed to direct sampling by one person on the spot, which reduces the participation of personnel and greatly reduces the risk of sampling device and human pollution. Liquid splashing during the sampling process is avoided, which greatly increases the safety of the sampling process. The sampling amount can be controlled, which greatly reduces the amount and time of the raw material flushing device used when the sampling device is sampling, avoiding waste of resources. Direct sampling from the container ensures the authenticity and integrity of the solvent data. The sampling device has a simple structure and is easy to carry, and the sampling operation is also more convenient, quick and safe.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] In the description of the present invention, it should be understood that the terms "center", "height", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0063] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0065] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A sampling device, characterized in that: include: A sampling tube, comprising a liquid inlet and a liquid outlet; A valve, wherein the valve is arranged on the sampling tube and close to the liquid outlet; A spherical airbag, which is arranged on the sampling tube and located between the valve and the liquid inlet; the spherical airbag is made of a high-strength and corrosion-resistant elastic material; The first one-way valve is arranged at the liquid inlet end of the spherical airbag and is used to prevent the liquid from flowing back when the spherical airbag absorbs the liquid.

2. The sampling device according to claim 1, characterized in that Also includes: The second one-way valve is arranged at the liquid outlet end of the spherical airbag, and is used to ensure that the liquid can be discharged in one direction when the spherical airbag discharges the liquid.

3. The sampling device according to claim 1, characterized in that: The material of the sampling device is PFA material.

4. The sampling device according to claim 1, characterized in that: The sampling tube and the valve, the sampling tube and the spherical airbag are all connected via a high-sealability ferrule joint.

5. The sampling device according to claim 1, characterized in that: The valve is a ball valve or a butterfly valve.

6. The sampling device according to claim 2, characterized in that: The first one-way valve and / or the second one-way valve are gravity one-way valves.

7. The sampling device according to claim 4, characterized in that: The ferrule joint is a quick-insert ferrule joint.

8. The sampling device according to claim 1, characterized in that: Also includes: A fixing clip is arranged on the sampling tube; the fixing clip is used to fix the sampling device on a container containing raw materials.

9. The sampling device according to claim 8, characterized in that The fixing clamp is arranged between the spherical airbag and the liquid inlet of the sampling tube.

10. The sampling device according to claim 8, characterized in that The fixing clamp comprises a tube sleeve and a clamping plate assembly; the tube sleeve is sleeved on the sampling tube; the clamping plate assembly is arranged on the tube sleeve; the clamping plate assembly is used to fix the sampling device on a container containing raw materials.

11. The sampling device according to claim 10, characterized in that: The clamping plate assembly comprises: two clamping plates arranged on the pipe sleeve and parallel to each other, and a screw hole is arranged on any one of the two clamping plates; A fixing bolt passes through the screw hole.

12. The sampling device according to claim 11, characterized in that An anti-skid pad is arranged on the clamping plate of the fixing clamp.

13. A sampling method, characterized in that: It is implemented by using the sampling device according to any one of claims 1 to 12, comprising: Insert the liquid inlet of the sampling tube and immerse it completely in the liquid to be sampled; Start squeezing the spherical airbag, using the compressibility of the spherical airbag to generate suction, so that the taken liquid is sucked into the spherical airbag; Open the valve, adjust the liquid flow rate, and discharge the taken liquid unidirectionally from the liquid outlet.

14. The sampling method according to claim 13, characterized in that: Also includes: Before liquid sampling, the position of the fixing clamp on the sampling tube is adjusted so that it is clamped on the container wall of the liquid to be sampled, and then the subsequent liquid sampling operation is performed.

15. The sampling method according to claim 13, characterized in that: The liquid is a strong acid, a strong base or an organic liquid.

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