A liquid chromatography column tube

Abstract

This application relates to the technical field of liquid chromatography, and in particular to a liquid chromatography column tube, which includes a tube body, both ends of which are fixedly fitted with outer sleeves. A filter mechanism is inserted into the inside of the outer sleeves, and a connecting tube is movably installed on the outside of the filter mechanism. During use, when liquid flows through the tube body, it drives a worm gear to rotate, which in turn drives a rotating shaft and a side rod to rotate. During this process, the liquid is filtered through a filter screen. The rotation of the side rod drives a mounting bracket to rotate a brush plate outside the filter screen. The brush plate, under the action of a limiting spring, adheres to the outer surface of the filter screen, effectively removing attached impurities and avoiding affecting filtration efficiency. The filter screen has a conical design, which not only facilitates impurity accumulation and avoids clogging, but also increases the filtration area, improving flow and filtration efficiency. Overall, this device is ingeniously designed, has high filtration efficiency, and excellent performance.

Description

Technical Field

[0001] This application relates to the technical field of liquid chromatography, and in particular to a liquid chromatography column tube. Background Technology

[0002] A liquid chromatography column is a crucial component of a liquid chromatography analytical instrument, performing separation and serving as one of the core components of a liquid chromatography system. It consists of multiple components, with the column tube being a key part. Column tubes are available in various materials, including glass, stainless steel, aluminum-copper, PEEK, and other materials with smooth polymer linings. Different materials have different characteristics and applicable scenarios. The filters at both ends of the liquid chromatography column tube are also important components, playing a vital role. First, the primary function of the filters is to prevent the column packing material from being washed out of the column by the mobile phase. In high-performance liquid chromatography (HPLC), the mobile phase continuously passes through the column. Without filters, the column packing material may gradually be lost due to the scouring effect of the mobile phase, severely impacting the separation efficiency and performance of the column. Second, the filters effectively remove impurities and particulate matter from the mobile phase. If these impurities and particulate matter directly enter the column, they may clog the column pores, affecting column permeability and separation efficiency. Therefore, the presence of filters ensures the purity of the mobile phase, thereby improving the accuracy and reliability of chromatographic analysis. A search revealed Chinese Patent Publication No. CN218865856U, which discloses a liquid chromatography column tube. The column tube has mounting grooves at both ends of its inner wall, and each groove houses a detachable double-layer filter mechanism. The double-layer filter mechanism includes a tube body, a filter plate mounted inside the tube at its outer end, a sieve plate mounted inside the tube near its inner end, and an annular limiting block on the outer wall of the tube body at its outer end. A second sealing ring is provided between the annular limiting block and the column tube. This liquid chromatography column tube, with its double-layer filter mechanism mounted via mounting grooves, provides excellent filtration for the liquid chromatography column. The double-layer filter mechanism is also easy to disassemble and clean, facilitating user removal and cleaning. The first, second, and third sealing rings ensure a tight seal at the connection between the column tube, the double-layer filter mechanism, and the pressure cap.

[0003] Regarding the aforementioned related technologies, the inventors have discovered the following drawbacks: During use, the aforementioned tubular column primarily relies on threads for filter installation. However, disassembling and assembling the filter requires twisting the double-layer filter mechanism to loosen the threads, making the threaded installation cumbersome and inconvenient. Due to the filter's design, impurities easily enter the threads, causing them to become trapped and requiring considerable effort to twist. Furthermore, the flat surface of the filter means impurities inevitably adhere to its outer surface, leading to clogging over time. This indicates poor overall filtration efficiency and a high susceptibility to clogging. Therefore, this device has certain defects and shortcomings that require improvement. Summary of the Invention

[0004] To improve the overall anti-clogging performance and ease of disassembly and assembly of this device, this application provides a liquid chromatography column tube.

[0005] This application provides a liquid chromatography column tube, which adopts the following technical solution: it includes a tube body, both ends of which are fixedly installed with outer tubes, a filter mechanism is inserted into the inside of the outer tube, a connecting tube is movably installed on the outside of the filter mechanism, and a clamping mechanism is fixedly installed on the outside of the connecting tube, and the connecting tube is installed on the outside of the outer tube through the clamping mechanism. The filtration mechanism includes a sleeve, which is fixedly installed inside the outer sleeve in a ring-shaped arrangement at equal intervals. A rod is inserted into the inside of the sleeve, and a ring rail is fixedly installed at the outer end of the rod. A drive assembly is rotatably connected inside the ring rail, and a filter screen is fixedly installed on the outer side of the ring rail. A cleaning assembly is fixedly installed through the filter screen at the outer end of the drive assembly.

[0006] Optionally, the connecting pipe has an internal thread, and the outer end of the connecting pipe is threaded with a plug. The outer surface of the plug is fixedly equipped with anti-slip protrusions at equal intervals.

[0007] Optionally, the drive assembly includes a slip ring slidably connected to the inner side of the annular rail. A connecting rod is fixedly installed on the inner side of the slip ring. A rotating shaft is rotatably connected to the middle of the connecting rod. A worm gear is fixedly installed at one end of the rotating shaft near the tube body. The outer side of the rotating shaft passes through the filter screen and is fixedly connected to the cleaning assembly. The overall cross-sectional shape of the filter screen is conical. The outer end of the rotating shaft is rotatably connected to the inner end of the connecting tube.

[0008] Optionally, the cleaning assembly includes side rods, which are arranged in a ring at equal intervals and fixedly installed on the outer end of the rotating shaft. A mounting bracket is fixedly installed on the outer side of the side rods, and a limit spring is fixedly installed at equal intervals on the inner side of the mounting bracket. A brush plate is fixedly installed at the end of the limit spring, and the inner side of the brush plate and the outer surface of the filter screen are in close contact.

[0009] Optionally, support rods are fixedly installed at equal intervals on the outer side of the brush plate, and the outer ends of the support rods pass through the mounting frame.

[0010] Optionally, a side frame is fixedly installed on the outer end of the mounting bracket, and a ball bearing is rotatably connected to the side of the side frame near the filter screen, with the inner side of the ball bearing and the outer surface of the filter screen being fitted together.

[0011] Optionally, the mounting mechanism includes a first mounting ring, a second mounting ring, and a third mounting ring. The first mounting ring is fixedly mounted on the outer surface of the outer sleeve, the second mounting ring is slidably connected to the middle of the outer surface of the connecting tube, and the third mounting ring is fixedly mounted on the outer surface of the connecting tube at the end away from the first mounting ring. An elastic fastening component is fixedly mounted on the outer side of the third mounting ring, and a magnet seat is fixedly mounted on the outer side of the first mounting ring. The elastic fastening component and the magnet seat are interlocked with each other.

[0012] Optionally, the elastic fastening assembly includes a concave seat, which is fixedly installed on the outside of the third mounting ring in a ring-shaped arrangement with equal spacing. A telescopic spring is fixedly installed on the inside of the concave seat, and a hinge seat is fixedly installed at the end of the telescopic spring. The inside of the hinge seat is fixedly connected to the second mounting ring. A limit rod is rotatably connected to the inside of each hinge seat. A locking seat is fixedly installed on the outside of the limit rod, and the locking seat and the magnetic seat are interlocked.

[0013] Optionally, a limiting groove is provided on the inner side of the magnet base, and a trapezoidal limiting angle groove is provided at the inner end of the limiting groove. The inner end of the card holder is also trapezoidal. The right-angled side of the inner side of the card holder and the right-angled side in the trapezoidal limiting angle groove are fitted and connected. The card holder is made of iron material, and the card holder and the magnet base are magnetically connected.

[0014] Optionally, a support rod is fixedly installed at the outer end of the hinge seat, and the end of the support rod passes through the concave seat.

[0015] In summary, this application includes the following beneficial technical effects: 1. By incorporating a filtration mechanism, this device operates by circulating liquid within the tube, driving the worm gear to rotate, which in turn rotates the shaft and side rod. During this process, the liquid is filtered through the filter screen. The rotation of the side rod, in turn, drives the mounting bracket to rotate the brush plate outside the filter screen. Under the action of the limiting spring, the brush plate adheres to the outer surface of the filter screen, effectively removing attached impurities and preventing any impact on filtration efficiency. The filter screen has a conical design, which not only facilitates impurity collection and prevents clogging but also increases the filtration area, improving flow and filtration efficiency. Overall, this device is ingeniously designed, highly efficient, and performs exceptionally well.

[0016] 2. By setting up a clamping mechanism, this device can easily install the connecting pipe and the filter mechanism. Insert the filter mechanism into the outer tube, and then insert the connecting pipe. By squeezing the second mounting ring, the clamping seat is firmly locked into the limiting groove by the magnetic force of the telescopic spring and the magnetic seat, achieving stable installation. When disassembling, simply press the second mounting ring and rotate the limiting rod to quickly separate the connecting pipe and the filter mechanism. In addition, the connecting pipe can be quickly sealed by the connection of the internal thread and the plug. It is flexible to use. The clamping mechanism of this device is ingeniously designed, easy to operate, and quick to assemble and disassemble, improving the convenience of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the filter mechanism, the carding mechanism, and the external pipe in the disassembled state in the embodiments of this application; Figure 3 This is a schematic diagram of the internal structure of the filtering mechanism and the carding mechanism in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the filtering mechanism and the carding mechanism in the embodiments of this application; Figure 5 This is a schematic diagram of the card mounting mechanism in an embodiment of this application; Figure 6 This is a schematic diagram of the filtering mechanism in the embodiments of this application; Figure 7 This is a schematic diagram of the structure of the driving component and the cleaning component in the embodiments of this application; Figure 8 This is a schematic diagram of the filter mechanism in its split state in an embodiment of this application; Figure 9 This is a schematic diagram of the internal structure of the outer tube in an embodiment of this application.

[0018] Reference numerals: 1. Pipe body; 2. Outer tube; 3. Filtering mechanism; 31. Connecting tube; 32. Insert rod; 33. Circular rail; 34. Filter screen; 35. Drive assembly; 351. Slip ring; 352. Connecting rod; 353. Rotating shaft; 354. Worm gear; 36. Cleaning assembly; 361. Side rod; 362. Mounting bracket; 363. Limit spring; 364. Brush plate; 365. Support rod; 366. Side frame 367. Ball bearing; 4. Connecting pipe; 5. Clip-on mechanism; 51. First mounting ring; 52. Second mounting ring; 53. Third mounting ring; 54. Magnet seat; 55. Elastic fastening assembly; 551. Concave seat; 552. Telescopic spring; 553. Hinge seat; 554. Limiting rod; 555. Clip seat; 56. Limiting groove; 57. Trapezoidal limiting angle groove; 58. Support rod; 6. Internal thread; 7. Plug. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0020] This application discloses a liquid chromatography column tube. For example... Figure 1 As shown, it includes a tube body 1, with outer tubes 2 fixedly installed at both ends of the tube body 1. A filter mechanism 3 is inserted into the inside of the outer tube 2. A connecting tube 4 is movably installed on the outside of the filter mechanism 3. A clamping mechanism 5 is fixedly installed on the outside of the connecting tube 4. The connecting tube 4 is installed on the outside of the outer tube 2 through the clamping mechanism 5. The filter mechanism 3 includes sleeves 31, which are arranged in a ring at equal intervals and fixedly installed inside the outer sleeve 2. Insert rods 32 are inserted into the inside of the sleeves 31, and an annular rail 33 is fixedly installed at the outer end of the insert rods 32. A drive assembly 35 is rotatably connected inside the annular rail 33, and a filter screen 34 is fixedly installed on the outer side of the annular rail 33. A cleaning assembly 36 is fixedly installed through the filter screen 34 at the outer end of the drive assembly 35. The design of the outer sleeve 2 allows for easy insertion and fixation of the filter mechanism 3, which not only improves installation efficiency but also ensures the stability of the filter mechanism 3 during use. The ingenious combination of components such as the sleeves 31, insert rods 32, and annular rail 33 in the filter mechanism 3 enables the filter screen 34 to be smoothly installed and operate stably. The drive assembly 35 and the cleaning assembly 36... The addition of an automatic cleaning function is a major highlight of this design. The drive component 35, connected to the insert rod 32 via the annular rail 33, can drive the cleaning component 36 to clean the filter screen 34. This not only avoids the accumulation of impurities on the filter screen 34 during filtration, improving filtration efficiency, but also extends the service life of the filter screen 34. Finally, the clamping mechanism 5 between the connecting tube 4 and the outer tube 2 allows the connecting tube 4 to be easily and quickly installed on the outer tube 2. This clamping method is not only firm and reliable, but also very convenient to disassemble, greatly improving the ease of use of the liquid chromatography column. In summary, this liquid chromatography column design fully considers stability and convenience during use, while incorporating an automatic cleaning function, greatly improving its working efficiency and service life.

[0021] Please refer to Figure 2 The connecting tube 4 has an internal thread 6, and its outer end is threadedly connected to a plug 7. The outer surface of the plug 7 is fixedly fitted with anti-slip protrusions at equal intervals. This design of the connecting tube 4 in the liquid chromatography column has several unique characteristics. First, the internal thread 6 allows the connecting tube 4 to connect with other components via threads, achieving a stable and reliable connection. Second, the threaded plug 7 at the outer end of the connecting tube 4 effectively prevents liquid leakage from the outer end, ensuring accurate liquid chromatography. The analysis process proceeds smoothly. In addition, the outer surface of the plug 7 is fixedly equipped with anti-slip protrusions at equal intervals. This design not only enhances the anti-slip performance of the plug 7, making it easier and less strenuous to tighten or loosen the plug 7, but also improves the safety of operation and avoids accidental injury caused by slipping. This design of the connecting tube 4 takes into account the stability of the connection, the sealing performance, and the convenience and safety of operation. It is an indispensable part of the design of the liquid chromatography column tube. Through this design, the smooth progress of the liquid chromatography analysis process can be ensured, and the accuracy and reliability of the analysis can be improved.

[0022] Please refer to Figure 8The cleaning assembly 36 includes side rods 361, which are arranged in a ring at equal intervals and fixedly installed on the outer end of the rotating shaft 353. A mounting bracket 362 is fixedly installed on the outer side of the side rods 361, and limit springs 363 are fixedly installed at equal intervals on the inner side of the mounting bracket 362. A brush plate 364 is fixedly installed at the end of the limit springs 363. The inner side of the brush plate 364 and the outer surface of the filter screen 34 are in close contact. The cleaning assembly 36 mainly consists of side rods 361, mounting brackets 362, limit springs 363, and brush plates 364. The side rods 361 are arranged in a ring at equal intervals and fixedly installed on the outer end of the rotating shaft 353. This design allows the side rods 361 to rotate synchronously with the rotation of the rotating shaft 353. The mounting brackets 362 are fixedly installed on the outer side of the side rods 361. On the side, a stable support structure is provided for the limiting spring 363 and the brush plate 364. One end of the limiting spring 363 is fixedly mounted on the mounting bracket 362, and the other end is connected to the brush plate 364. This design allows the brush plate 364 to maintain a certain elasticity and fit under the action of the limiting spring 363, ensuring that the brush plate 364 can fit tightly against the outer surface of the filter screen 34. The inner side of the brush plate 364 and the outer surface of the filter screen 34 are tightly fitted. As the side rod 361 rotates, the brush plate 364 can brush and clean the outer surface of the filter screen 34. In this way, the impurities attached to the filter screen 34 can be effectively removed, thereby ensuring the filtration efficiency and flow performance of the filter screen 34. At the same time, the presence of the limiting spring 363 not only This design ensures the proper fit of the brush plate 364 and provides a buffer when it encounters resistance, preventing excessive wear or damage. This cleaning component 36 design not only guarantees the filtration efficiency of the filter screen 34 but also effectively cleans impurities from the filter screen, improving the overall performance and lifespan of the liquid chromatography column. The drive component 35 includes a slip ring 351, which is slidably connected to the inner side of an annular rail. A connecting rod 352 is fixedly installed on the inner side of the slip ring 351. A rotating shaft 353 is rotatably connected to the middle of the connecting rod 352. A worm gear 354 is fixedly installed at one end of the rotating shaft 353 near the tube body 1. The outer side of the rotating shaft 353 passes through the filter screen 34 and is fixedly connected to the cleaning component 36. The overall cross-section of the filter screen 34... The column has a conical shape, and the outer end of the rotating shaft 353 is rotatably connected to the inner end of the connecting tube 4. In the design of this liquid chromatography column, the drive assembly 35 is ingeniously and efficiently constructed. The sliding connection of the slip ring 351 on the inner side of the annular rail ensures the stable installation and smooth operation of the drive assembly 35 on the filter mechanism 3. The ingenious combination of the connecting rod 352 and the rotating shaft 353 allows the sliding motion of the slip ring 351 to be converted into the rotational motion of the rotating shaft 353, thereby driving the entire cleaning assembly 36 to work. In particular, the design of the worm gear 354 installed at the end of the rotating shaft 353 near the tube body 1 not only makes the rotational motion of the rotating shaft 353 more stable, but also allows the worm gear 354 to rotate through the flow of liquid, thereby driving the entire drive assembly 35 to work.This design not only fully utilizes the energy of liquid flow but also makes the entire filtration and cleaning process more automated and efficient. Furthermore, the overall cross-sectional shape of the filter screen 34 is conical, which increases the filtration area and improves filtration efficiency.

[0023] Please refer to Figure 6 Support rods 365 are fixedly installed at equal intervals on the outer side of the brush plate 364. The outer end of the support rod 365 passes through the mounting bracket 362. The presence of the support rods 365 allows the brush plate 364 to maintain a more stable posture under the action of the limiting spring 363. Since the brush plate 364 needs to be tightly attached to the outer surface of the filter screen 34, without the support of the support rods 365, the brush plate 364 may shake or deform during the cleaning process, thus affecting the cleaning effect. The support rods 365, by passing through the mounting bracket 362, provide a solid support base for the brush plate 364, enabling the brush plate 364 to maintain a stable posture and perform efficient cleaning work. Secondly, the support rods 365 can also increase the distance between the brush plate 364 and the filter screen 34. The contact area between the support rods 365 and the filter screen 34 is such that the support rods 365 are fixedly installed at equal intervals on the outside of the brush plate 364. Therefore, when the brush plate 364 moves on the filter screen 34, the support rods 365 can make the brush plate 364 fit more evenly on the outer surface of the filter screen 34, thereby achieving a comprehensive cleaning of the filter screen 34. This not only improves the cleaning effect but also extends the service life of the filter screen 34. In addition, the design of the support rods 365 also takes into account the convenience of operation. The design of the through mounting bracket 362 makes it easier to install and remove the brush plate 364. If it is necessary to replace or repair the brush plate 364, simply remove the mounting bracket 362 from the side rod 361 for easy operation.

[0024] Please refer to Figure 7A side bracket 366 is fixedly mounted on the outer end of the mounting bracket 362. A ball bearing 367 is rotatably connected to the side of the side bracket 366 near the filter screen 34. The inner side of the ball bearing 367 is in close contact with the outer surface of the filter screen 34. The side bracket 366 fixedly mounted on the outer end of the mounting bracket 362 not only provides stable support for the ball bearing 367 but also ensures that the ball bearing 367 can stably adhere to the outer surface of the filter screen 34. The design of the ball bearing 367 is a highlight of this part; its side near the filter screen 34 is in close contact with the outer surface of the filter screen 34. When the side rod 361 rotates with the rotating shaft 353, the ball bearing 367 can roll on the filter screen 34. This rolling action, compared to the sliding of the traditional brush plate 364, has... With lower frictional resistance and higher cleaning efficiency, the ball bearing 367 can easily scrape off impurities adhering to the filter screen 34, while avoiding wear and heat accumulation caused by friction. In addition, the rolling motion of the ball bearing 367 makes the cleaning process more uniform and continuous. Because the ball bearing 367 can roll smoothly on the filter screen 34, it can ensure uniform cleaning of the entire outer surface of the filter screen 34, avoiding the problem of reduced filtration efficiency caused by uneven cleaning. The design of installing the side bracket 366 and the ball bearing 367 not only improves the cleaning efficiency and performance of the cleaning assembly 36, but also extends the service life of the filter screen 34, providing a strong guarantee for the stable operation of the liquid chromatography column.

[0025] Please refer to Figure 5The mounting mechanism 5 includes a first mounting ring 51, a second mounting ring 52, and a third mounting ring 53. The first mounting ring 51 is fixedly mounted on the outer surface of the outer sleeve 2. The second mounting ring 52 is slidably connected to the middle of the outer surface of the connecting tube 4. The third mounting ring 53 is fixedly mounted on the outer surface of the connecting tube 4 at the end away from the first mounting ring 51. An elastic fastening assembly 55 is fixedly mounted on the outer side of the third mounting ring 53. A magnet seat 54 is fixedly mounted on the outer side of the first mounting ring 51. The elastic fastening assembly 55 and the magnet seat 54 are interlocked. First, the first mounting ring 51 is fixedly mounted on the outer surface of the outer sleeve 2, providing a stable mounting base for the entire mounting mechanism 5. The second mounting ring 52 is slidably connected to the middle of the outer surface of the connecting tube 4, allowing the second mounting ring 52 to slide freely on the connecting tube 4, facilitating adjustment of its position to adapt to different installation needs. The third mounting ring 53 is fixedly installed at the end of the connecting pipe 4 away from the first mounting ring 51, forming a clamping structure for the connecting pipe 4 together with the second mounting ring 52. It is particularly worth mentioning that an elastic fastening component 55 is fixedly installed on the outer side of the third mounting ring 53, while a magnet seat 54 is fixedly installed on the outer side of the first mounting ring 51. This design allows the elastic fastening component 55 and the magnet seat 54 to interlock, thereby achieving a tight connection between the connecting pipe 4 and the outer sleeve 2. When disassembly is required, the connecting pipe 4 can be removed from the outer sleeve 2 simply by overcoming the elastic force of the elastic fastening component 55, making the operation simple and quick. In addition, the combined use of the elastic fastening component 55 and the magnet seat 54 not only increases the stability and reliability of the connection, but also reduces the noise and vibration generated during the connection process, improving the overall performance of the device.

[0026] Please refer to Figure 4The elastic fastening assembly 55 includes concave seats 551, which are arranged in a ring at equal intervals and fixedly installed on the outside of the third mounting ring 53. A telescopic spring 552 is fixedly installed on the inner side of the concave seat 551, and a hinge seat 553 is fixedly installed on the end of the telescopic spring 552. The inner side of the hinge seat 553 is fixedly connected to the second mounting ring 52. A limit rod 554 is rotatably connected to the inner side of each hinge seat 553. A locking seat 555 is fixedly installed on the outer side of the limit rod 554, and the locking seat 555 and the magnetic seat 54 lock together. The concave seats 551 are fixedly installed on the outside of the third mounting ring 53 in a ring-shaped arrangement with equal intervals. This layout allows the elastic fastening components 55 to be evenly distributed around the connecting pipe 4, ensuring the stability and uniform force of the connection. The telescopic spring 552 on the inner side of the concave seat 551 provides elastic force for the entire assembly. When the connecting pipe 4 needs to be installed, the second mounting ring 52 moves towards the first mounting ring 51 under the action of external force, and the hinge seat 553 compresses the telescopic spring 552 as the second mounting ring 52 moves. At this time, the limiting rod 554 rotates under the action of the hinge seat 553, thereby driving the card holder 555 to move towards the magnet seat 54. Once the card holder 555 contacts the magnet seat 54, due to the magnetic force of the magnet seat 54, the card holder 555 will be firmly attracted to the magnet seat 54, realizing the tight connection between the connecting tube 4 and the outer sleeve 2. This magnetic connection is not only firm and reliable, but also has a certain anti-vibration performance, ensuring that the liquid chromatography column tube will not loosen due to vibration during use. When it is necessary to disassemble the connecting tube 4 When the second mounting ring 52 is pushed away from the magnet seat 54, the telescopic spring 552 is compressed, and the hinge seat 553 and the limiting rod 554 rotate accordingly, causing the card seat 555 to separate from the magnet seat 54. In this way, the connecting tube 4 can be easily removed from the outer tube 2. The elastic buckle assembly 55, through its unique structure and working principle, realizes a fast, reliable and detachable connection between the connecting tube 4 and the outer tube 2, which greatly improves the convenience and flexibility of using the liquid chromatography column tube.

[0027] Please refer to Figure 5The inner side of the magnet base 54 has a limiting groove 56, and the inner end of the limiting groove 56 has a trapezoidal limiting angle groove 57. The inner end of the card holder 555 is also trapezoidal. The right-angled side of the inner side of the card holder 555 and the right-angled side of the trapezoidal limiting angle groove 57 are fitted together. The card holder 555 is made of iron. The card holder 555 and the magnet base 54 are magnetically connected. The detailed design of the magnet base 54 and the card holder 555 further enhances the stability and reliability of the card mounting mechanism 5. The inner side of the magnet base 54 has a limiting groove 56. The limiting groove 56 not only provides installation space for the card holder 555, but also ensures accurate alignment when the card holder 555 is inserted. The trapezoidal limiting angle groove 57 inside the limiting groove 56 cooperates with the trapezoidal structure on the inner side of the card holder 555, so that the card holder 555 is guided by the trapezoidal structure when inserted into the limiting groove 56, making it easier to achieve accurate docking. At the same time, the right-angled connection of the trapezoidal structure also increases the stability and tightness of the connection. The card holder 555 is made of iron. The material composition allows the card holder 555 to achieve a magnetic connection with the magnet seat 54. When the card holder 555 is inserted into the limiting groove 56 and comes into contact with the magnet seat 54, the card holder 555 will be firmly attracted to the magnet seat 54 due to the magnetic force of the magnet seat 54, thereby achieving a tight connection between the connecting tube 4 and the outer tube 2. This magnetic connection is not only strong but also easy to disassemble. The card holder 555 can be pulled out of the magnet seat 54 simply by overcoming the magnetic force. In addition, this design also takes into account the safety and stability of the connection. Since the connection between the card holder 555 and the magnet seat 54 is achieved by magnetic force, the connection is not easy to loosen or fall off when subjected to external impact or vibration, ensuring the stability and safety of the liquid chromatography column tube during use. The detailed design of the magnet seat 54 and the card holder 555, through magnetic connection, trapezoidal structure guidance and iron material characteristics, realizes a fast, stable and detachable connection between the connecting tube 4 and the outer tube 2.

[0028] Please refer to Figure 3A support rod 58 is fixedly installed at the outer end of the hinge seat 553. The end of the support rod 58 passes through the concave seat 551. First, the presence of the support rod 58 enhances the connection stability between the hinge seat 553 and the concave seat 551. When the second mounting ring 52 moves under the action of external force, the hinge seat 553 will rotate accordingly. The support rod 58, by passing through the concave seat 551, effectively limits the range of movement of the hinge seat 553, preventing it from rotating excessively or shifting, thereby ensuring the stability and reliability of the entire clamping mechanism 5. Second, the cooperation between the support rod 58 and the concave seat 551 also guides the telescopic spring 552. In addition to its supporting function, during the clamping process, when the telescopic spring 552 is compressed, the support rod 58 provides a stable support point, allowing the telescopic spring 552 to be evenly stressed and smoothly compressed. This helps maintain the balance and stability of the entire clamping mechanism 5, avoiding damage or failure caused by uneven stress. Furthermore, the design of the support rod 58 also takes into account the convenience and safety of operation. Since it passes through the concave seat 551, the operator can clearly see the position and status of the support rod 58 when installing or removing the connecting pipe 4, thereby more accurately judging the working status of the clamping mechanism 5 and ensuring the safety and accuracy of operation.

[0029] The implementation principle of a liquid chromatography column tube according to an embodiment of this application is as follows: By setting up a filtration mechanism 3, when the liquid flows inside the tube body 1 during use, the flowing liquid drives the worm gear 354 to rotate. The rotation of the worm gear 354 drives the rotating shaft 353 to rotate, which in turn drives the side rod 361 to rotate. During this process, the liquid can be filtered through the filter screen 34. As the rotating shaft 353 drives the side rod 361 to rotate, the side rod 361 can drive the mounting bracket 362 to rotate outside the filter screen 34. The rotation of the mounting bracket 362 can drive the brush plate 364 to rotate outside the filter screen 34. At this time, the limiting spring 36... The contact reset mechanism causes the brush plate 364 to adhere to the outer surface of the filter screen 34, enabling stable brushing and cleaning of the outer surface of the filter screen 34. This prevents filtered impurities from adhering to the outer surface of the filter screen 34 and affecting its filtration efficiency. Furthermore, during filtration, the conical shape of the filter screen 34 guides the swept impurities through the inclined surface of its outer surface, causing them to accumulate on the outside of the filter screen 34. This prevents the filter screen 34 from becoming clogged. The conical shape also increases the filtration area, thereby improving the flow efficiency inside the tube 1 and resulting in a more efficient overall filtration process, thus enhancing the overall performance of the device.

[0030] By setting the clamping mechanism 5, when it is necessary to install the connecting pipe 4 and the filter mechanism 3 during use, the insert rod 32 of the filter mechanism 3 can be inserted into the sleeve pipe 31. The outer end of the insert rod 32 is equipped with an annular rail. At this time, the entire filter mechanism 3 can be installed inside the outer sleeve 2. Then, the connecting pipe 4 is inserted into the outer sleeve 2. By further squeezing the second mounting ring 52, the second mounting ring 52 pulls the telescopic spring 552 to extend. At the same time, the second mounting ring 52 pushes the limiting rod 554 to move the clamping seat. 555 moves towards the magnet base 54, and the magnetic force of the magnet base 54 attracts the card holder 555 into the limiting groove 56. At this time, the inner end of the card holder 555 is inserted into the inner side of the trapezoidal limiting groove 56, and the right-angle side of the card holder 555 fits against the right-angle side of the trapezoidal limiting groove 57, and it is magnetically connected to the magnet base 54. At the same time, the telescopic spring 552 provides elastic force when it is in the extended state, causing the limiting rod 554 to pull the card holder 555 towards the first mounting ring 51. It can be seen that after installation, the telescopic spring 552 provides elastic force. The elastic force causes the card holder 555 to tighten, and the card holder 555 is further fixed by the magnetic attraction of the magnet seat 54. At the same time, the contact at its right-angle edge is a rigid connection. It can be seen that the carding mechanism 5 can stably lock the connecting tube 4 into the inside of the outer tube 2. When disassembly is required, simply adjust and press the second mounting ring 52. The second mounting ring 52 further stretches the telescopic spring 552. At this time, the card holder 555 disengages from the inner side of the limiting groove 56. By rotating the limiting rod 554 on the hinge seat 553, the limiting groove 56 and the card holder 555 are forced to close. 5. Complete detachment allows the device to quickly separate the connecting pipe 4 installed inside the outer sleeve 2. At this point, the filter mechanism 3 can be directly removed. It can be seen that when the filter mechanism 3 needs to be disassembled, the device only needs to push the second mounting ring 52 to displace it to quickly assemble and disassemble the connecting pipe 4 and the filter mechanism 3. This allows the device to quickly assemble and disassemble the filter mechanism 3. At the same time, during use, the internal thread 6 and the plug 7 are threaded together to quickly seal the connecting pipe 4, which facilitates the flexible use of the device and improves the overall ease of use of the device.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A liquid chromatography column tube, comprising a tube body (1), characterized in that: Both ends of the tube body (1) are fixedly installed with outer tubes (2), a filter mechanism (3) is inserted into the inside of the outer tube (2), a connecting tube (4) is movably installed on the outside of the filter mechanism (3), a clamping mechanism (5) is fixedly installed on the outside of the connecting tube (4), and the connecting tube (4) is installed on the outside of the outer tube (2) through the clamping mechanism (5). The filter mechanism (3) includes a sleeve (31), which is fixedly installed inside the outer sleeve (2) in a ring arrangement with equal spacing. A rod (32) is inserted into the inside of the sleeve (31), and a ring rail (33) is fixedly installed at the outer end of the rod (32). A drive assembly (35) is rotatably connected inside the ring rail (33). A filter screen (34) is fixedly installed on the outer side of the ring rail (33), and a cleaning assembly (36) is fixedly installed through the filter screen (34) at the outer end of the drive assembly (35). The drive assembly (35) includes a slip ring (351), which is slidably connected to the inner side of the ring rail. A connecting rod (352) is fixedly installed on the inner side of the slip ring (351). A rotating shaft (353) is rotatably connected to the middle of the connecting rod (352). A worm gear (354) is fixedly installed at one end of the rotating shaft (353) near the tube body (1). The outer side of the rotating shaft (353) passes through the filter screen (34) and is fixedly connected to the cleaning assembly (36). The overall cross-sectional shape of the filter screen (34) is conical. The outer end of the rotating shaft (353) is rotatably connected to the inner end of the connecting tube (4). The cleaning assembly (36) includes side rods (361), which are arranged in a ring at equal intervals and fixedly installed on the outer end of the rotating shaft (353). A mounting bracket (362) is fixedly installed on the outer side of the side rods (361), and a limit spring (363) is fixedly installed at equal intervals on the inner side of the mounting bracket (362). A brush plate (364) is fixedly installed at the end of the limit spring (363), and the inner side of the brush plate (364) is in contact with the outer surface of the filter screen (34). The mounting mechanism (5) includes a first mounting ring (51), a second mounting ring (52) and a third mounting ring (53). The first mounting ring (51) is fixedly mounted on the outer surface of the outer sleeve (2). The second mounting ring (52) is slidably connected to the middle of the outer surface of the connecting tube (4). The third mounting ring (53) is fixedly mounted on the outer surface of the connecting tube (4) at one end away from the first mounting ring (51). An elastic fastening assembly (55) is fixedly mounted on the outer side of the third mounting ring (53). A magnet seat (54) is fixedly mounted on the outer side of the first mounting ring (51). The elastic fastening assembly (55) and the magnet seat (54) are interlocked.

2. The liquid chromatography column tube according to claim 1, characterized in that: The connecting pipe (4) has an internal thread (6) inside, and a plug (7) is threaded to the outer end of the connecting pipe (4). Anti-slip protrusions are fixedly installed on the outer surface of the plug (7) at equal intervals.

3. The liquid chromatography column tube according to claim 2, characterized in that: Support rods (365) are fixedly installed at equal intervals on the outer side of the brush plate (364), and the outer end of the support rods (365) passes through the mounting bracket (362).

4. A liquid chromatography column tube according to claim 3, characterized in that: A side frame (366) is fixedly installed on the outer end of the mounting bracket (362). A ball bearing (367) is rotatably connected to the side of the side frame (366) near the filter screen (34). The inner side of the ball bearing (367) is in contact with the outer surface of the filter screen (34).

5. A liquid chromatography column tube according to claim 4, characterized in that: The elastic fastening assembly (55) includes a concave seat (551), which is fixedly installed on the outside of the third mounting ring (53) in a ring arrangement with equal spacing. A telescopic spring (552) is fixedly installed on the inside of the concave seat (551), and a hinge seat (553) is fixedly installed at the end of the telescopic spring (552). The inside of the hinge seat (553) is fixedly connected to the second mounting ring (52). A limit rod (554) is rotatably connected to the inside of the hinge seat (553). A card holder (555) is fixedly installed on the outside of the limit rod (554), and the card holder (555) and the magnet seat (54) are interlocked.

6. A liquid chromatography column tube according to claim 5, characterized in that: The inner side of the magnet base (54) is provided with a limiting groove (56), and the inner end of the limiting groove (56) is provided with a trapezoidal limiting angle groove (57). The inner end of the card holder (555) is also trapezoidal. The right angle side of the inner side of the card holder (555) and the right angle side of the trapezoidal limiting angle groove (57) are fitted together. The card holder (555) is made of iron material. The card holder (555) and the magnet base (54) are magnetically connected.

7. A liquid chromatography column tube according to claim 6, characterized in that: A support rod (58) is fixedly installed at the outer end of the hinge seat (553), and the end of the support rod (58) passes through the concave seat (551).

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