Anti-blocking pretreatment device for chromatographic analysis and tar chromatographic analysis device
By installing an anti-clogging pretreatment device between the syringe and the needle, and filtering the tar sample using a filter membrane, the clogging problem caused by the direct entry of the tar sample into the chromatographic column was solved, thus achieving smooth chromatographic analysis and improved accuracy of results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAOTOU IRON & STEEL (GROUP) CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-21
AI Technical Summary
When tar samples are introduced directly into the chromatographic column without treatment, the column is prone to blockage, which affects the accuracy and reliability of the analytical results. Furthermore, frequent column replacements increase costs and interrupt experimental or production processes.
Design an anti-clogging pretreatment device, including a filter housing and a filter membrane, installed between a syringe and a needle to filter tar samples. The filter membrane has a pore size of 0.21-0.23 μm, the filter housing is made of polyetheretherketone, and the inner and outer conical joints ensure a sealed connection. The filter membrane is an organic nylon membrane with a pore size suitable for removing impurities.
It effectively removes impurities, prevents column clogging, extends column life, improves the accuracy and reliability of analytical results, reduces leakage risk, lowers maintenance costs, and increases work efficiency.
Smart Images
Figure CN224152433U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of chromatographic analysis equipment for tar components, and in particular to an anti-clogging pretreatment device and a tar chromatographic analysis device for chromatographic analysis. Background Technology
[0002] Tar itself has an extremely complex composition, containing not only various organic compounds but also a large number of solid particles, colloidal substances, and other impurities. In current chromatographic analysis procedures, when untreated tar samples are directly introduced into the chromatographic column for analysis, a series of problems inevitably arise.
[0003] Due to the presence of these impurities, they can easily accumulate inside the chromatographic column. This is especially true for capillary columns, where the extremely small diameter makes clogging due to impurity buildup even more frequent. Once a column becomes clogged, it can lead to numerous adverse consequences, such as poor peak shape and significantly reduced separation efficiency, severely impacting the accuracy and reliability of analytical results. Furthermore, resolving clogging requires frequent column replacements, which not only significantly increases analytical costs but also interrupts experimental or production processes, resulting in decreased work efficiency. Utility Model Content
[0004] The purpose of this invention is to provide an anti-clogging pretreatment device and a tar chromatography analysis device for chromatographic analysis, so as to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively improves work efficiency, and effectively improves the accuracy and reliability of analysis results.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] This invention provides an anti-clogging pretreatment device for chromatographic analysis, comprising: a filter housing and a filter membrane. The filter housing is installed between a syringe and a needle. The filter housing has a first end and a second end disposed opposite to each other. The first end of the filter housing is sealed and connected to the output port of the syringe, and the second end of the filter housing is sealed and connected to the input end of the needle. The filter membrane is disposed inside the filter housing, and the outer periphery of the filter membrane is sealed and fixedly connected to the inner wall of the filter housing. The filter membrane is capable of filtering tar samples that have passed through the filter membrane.
[0007] Preferably, the first end of the filter housing is provided with an inner conical connector, which is used to seal and insert into the outside of the output connector of the syringe.
[0008] Preferably, the second end of the filter housing is provided with an outer conical connector, which is used to seal the inner side of the input connector of the needle.
[0009] Preferably, the filter housing is made of polyetheretherketone (PEEK).
[0010] Preferably, the diameter of the filter housing is 12-14 mm.
[0011] Preferably, the filter membrane is an organic nylon membrane.
[0012] Preferably, the pore size of the filter pores on the organic nylon membrane is 0.21 to 0.23 μm.
[0013] Preferably, the filter membrane and the filter housing are bonded and fixed together with sealant.
[0014] This utility model also provides a tar chromatography analysis device, comprising: a syringe, a needle, an anti-clogging pretreatment device for chromatography analysis as described in any of the above claims, and a chromatograph, wherein the anti-clogging pretreatment device for chromatography analysis is used to be sealed between the syringe and the needle and to filter the tar sample; the chromatograph is used to receive the filtered tar sample and perform chromatographic analysis.
[0015] The present invention achieves the following technical advantages over the prior art:
[0016] This invention provides an anti-clogging pretreatment device and a tar chromatography analysis device for chromatographic analysis. This structural design allows the pretreatment device to be easily installed between a syringe and a needle, filtering the tar sample before it enters the needle and then the chromatograph. Filtering the tar sample through a filter membrane effectively removes impurities that could clog the chromatographic column, ensuring a smooth chromatographic analysis process, reducing the risk of column damage due to impurities, extending the column's lifespan, and preventing sample leakage through a sealed connection, thus guaranteeing sample integrity and the accuracy of the analytical results. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 A schematic diagram of the tar chromatography analysis device provided by this utility model;
[0019] In the diagram: 1. Anti-clogging pretreatment device for chromatographic analysis; 2. Syringe; 3. Needle; 4. Chromatograph. Detailed Implementation
[0020] 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.
[0021] The purpose of this invention is to provide an anti-clogging pretreatment device and a tar chromatography analysis device for chromatographic analysis, so as to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively improves work efficiency, and effectively improves the accuracy and reliability of analysis results.
[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] Example 1
[0024] This embodiment provides an anti-clogging pretreatment device 1 for chromatographic analysis, such as... Figure 1 As shown, the device includes a filter housing and a filter membrane. The filter housing is installed between the syringe 2 and the needle 3. The filter housing has a first end and a second end that are positioned opposite each other. The first end of the filter housing is sealed and connected to the output port of the syringe 2, and the second end of the filter housing is sealed and connected to the input end of the needle 3. The filter membrane is disposed inside the filter housing, and its outer periphery is sealed and fixedly connected to the inner wall of the filter housing. The filter membrane can filter the tar sample that has passed through the filter membrane. This structural design allows the pretreatment device to be easily installed between the syringe 2 and the needle 3, filtering the tar sample before it enters the needle 3 and then the chromatograph 4. Filtering the tar sample through the filter membrane effectively removes impurities that may clog the chromatographic column, ensuring the smooth operation of the chromatographic analysis process, reducing the risk of column damage due to impurities, improving the service life of the chromatographic column, and preventing sample leakage by sealing the connection, thus ensuring the integrity of the sample and the accuracy of the analytical results.
[0025] In a preferred embodiment, the first end of the filter housing is provided with an inner conical connector, which is used to seal and insert onto the outside of the output connector of the syringe 2. The design of the inner conical connector enables a tight seal with the output connector of the syringe 2, ensuring the stability and sealing of the connection between the filter housing and the syringe 2. This excellent sealing effectively prevents leakage of tar samples at the connection point, ensuring that only the tar sample passes through the filter membrane for filtration. This improves the reliability of filtration and avoids the risk of clogging caused by unfiltered samples directly entering the chromatographic analysis process.
[0026] In a preferred embodiment, the second end of the filter housing is provided with an external conical connector, which is used to seal the inner side of the input connector of the needle 3. The external conical connector ensures a stable and sealed connection between the filter housing and the needle 3, guaranteeing that the tar sample can smoothly enter the needle 3 from the filter housing, while preventing leakage at the connection point. This ensures the integrity of the entire filtration device in filtering the sample, further reducing the possibility of impurities leaking through due to loose connections, and improving the accuracy and reliability of chromatographic analysis.
[0027] In a preferred embodiment, the filter housing is made of polyetheretherketone (PEEK). PEEK has advantages such as high chemical stability, high mechanical strength, and good temperature resistance. This allows the filter housing to maintain its structural stability and integrity under the complex chemical environment of tar and the potential pressure changes and temperature fluctuations. It will not be damaged by corrosion from chemicals in tar or by environmental factors, thus providing reliable support and protection for the filter membrane and ensuring the long-term stable operation of the filtration device.
[0028] In a preferred embodiment, the diameter of the filter housing is 12-14 mm. This diameter range ensures that the filter housing can accommodate a filter membrane of a suitable size, guaranteeing that the filter membrane has sufficient space and area to filter the tar sample, which is beneficial to improving filtration efficiency. On the other hand, the suitable diameter makes it easier to connect and operate the filter housing with the syringe 2 and needle 3, and can be adapted to common syringe 2 and needle 3 specifications, enhancing the versatility and applicability of the device.
[0029] In a preferred embodiment, the filter membrane is an organic nylon membrane. Organic nylon membranes possess characteristics such as good chemical compatibility, high mechanical strength, and uniform microporous structure. Good chemical compatibility ensures that when filtering tar samples, it will not react with the chemical components in the tar, thus not affecting its own performance or the properties of the tar sample; high mechanical strength allows the filter membrane to maintain its structural stability and resistance to damage even under long-term tar pressure and friction; and the uniform microporous structure helps to achieve uniform filtration of impurities of different particle sizes, ensuring the consistency and stability of the filtration effect, thereby better guaranteeing the accuracy of chromatographic analysis.
[0030] In a preferred embodiment, the pore size of the filter pores on the organic nylon membrane is 0.21–0.23 μm. This specific pore size range allows for precise filtration of common impurities in tar samples. This pore size effectively blocks solid particles, colloidal substances, and other impurities in the tar that may clog the chromatographic column, while ensuring that the effective components in the tar can pass through the filter membrane into the subsequent analysis process. This achieves the goal of preventing clogging without affecting the chemical composition of the tar sample and the accuracy of chromatographic analysis, thereby improving the effectiveness of the entire pretreatment device in tar chromatographic analysis.
[0031] In a preferred embodiment, the filter membrane and filter housing are bonded together with sealant. This method ensures a tight and effective seal between the membrane and housing. This not only prevents unfiltered tar samples from leaking through the connection point but also ensures the membrane remains stable within the housing due to the sealant's fixing effect. The membrane is prevented from shifting due to the impact of tar sample flow, thus guaranteeing the continuous operation of the filtration function and the stability of the filtration effect.
[0032] Example 2
[0033] This embodiment also provides a tar chromatography analysis device, including: a syringe 2, a needle 3, an anti-clogging pretreatment device 1 for chromatographic analysis as described in Embodiment 1, and a chromatograph 4. The anti-clogging pretreatment device 1 is sealed between the syringe 2 and the needle 3 to filter the tar sample; the chromatograph 4 is used to receive the filtered tar sample and perform chromatographic analysis. This integrated tar chromatography analysis device, by rationally installing the anti-clogging pretreatment device between the syringe 2 and the needle 3, achieves effective filtration pretreatment of the tar sample before it enters the chromatograph 4. The impurities in the tar sample filtered by the pretreatment device are greatly reduced, lowering the risk of damage to the chromatograph 4 and the chromatographic column. This allows the chromatograph 4 to analyze the tar sample more stably and accurately, improving the reliability and repeatability of the analytical results. Simultaneously, it reduces the time and cost losses caused by frequent maintenance or replacement of the chromatographic column due to clogging, improving the efficiency of the entire tar chromatography analysis process.
[0034] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. An anti-clogging pretreatment device for chromatographic analysis, characterized in that: include: A filter housing for mounting between a syringe and a needle, the filter housing having a first end and a second end disposed opposite to each other, the first end of the filter housing being sealed and communicating with the output port of the syringe, and the second end of the filter housing being sealed and communicating with the input port of the needle; and A filter membrane is disposed inside the filter housing, and the outer periphery of the filter membrane is sealed and fixedly connected to the inner wall of the filter housing. The filter membrane is capable of filtering tar samples that have passed through the filter membrane.
2. The anti-clogging pre-treatment device for chromatographic analysis according to claim 1, characterized in that: The first end of the filter housing is provided with an inner conical connector, which is used to seal the outer side of the output connector of the syringe.
3. The anti-clogging pre-treatment device for chromatographic analysis according to claim 2, characterized in that: The second end of the filter housing is provided with an outer conical connector, which is used to seal the inner side of the input connector of the needle.
4. The anti-clogging pre-treatment device for chromatographic analysis according to claim 3, characterized in that: The filter housing is made of polyetheretherketone (PEEK).
5. The anti-clogging pre-treatment device for chromatographic analysis according to claim 4, characterized in that: The diameter of the filter housing is 12-14 mm.
6. The anti-clogging pre-treatment device for chromatographic analysis according to claim 5, characterized in that: The filter membrane is an organic nylon membrane.
7. The anti-clogging pre-treatment device for chromatographic analysis according to claim 6, characterized in that: The pore size of the filter pores on the organic nylon membrane is 0.21–0.23 μm.
8. The anti-clogging pre-treatment device for chromatographic analysis of claim 1, wherein: The filter membrane and the filter housing are bonded and fixed together with sealant.
9. A tar chromatographic analysis apparatus characterized by: include: syringe, needle, The anti-clogging pretreatment device for chromatographic analysis as described in any one of claims 1 to 8, wherein the anti-clogging pretreatment device for chromatographic analysis is used to be sealed between the syringe and the needle and to filter the tar sample; A chromatograph, which is used to receive filtered tar samples and perform chromatographic analysis.