Liquid chromatographic column tube

Abstract

The utility model relates to the technical field of liquid chromatography, in particular to a liquid chromatographic column tube which comprises a tube body, outer sleeves are fixedly mounted at two ends of the tube body, filtering mechanisms are inserted into the outer sleeves, and connecting tubes are movably mounted on the outer sides of the filtering mechanisms. During use, when liquid circulates in a pipe body and drives a worm gear to rotate, then a rotating shaft and a side rod are driven to rotate, in the process, the liquid is filtered through a filter screen cover, the side rod rotates to drive a mounting frame to drive a brush plate to rotate on the outer side of the filter screen cover, and the brush plate is attached to the outer surface of the filter screen cover under the action of a limiting spring; the filter screen cover is designed to be conical, so that the impurities can be conveniently gathered, the blockage is avoided, the filtering area is increased, the circulation and filtering efficiency is improved, and on the whole, the device is ingenious in design, high in filtering efficiency and excellent in use performance.

Description

Technical Field

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

[0002] The liquid chromatography column is an important component of the liquid chromatography analysis instrument. It has a separation function and is one of the core components of the liquid chromatography system. It is composed of multiple components, among which the column tube is the key part. There are many choices of materials for the column tube, including glass, stainless steel, aluminum copper, peek, and other materials with smooth lining polymer materials. Different materials have different characteristics and applicable scenarios. The filter screens at both ends of the column tube of the liquid chromatography column are one of the important components of the chromatographic column. They play a vital role. First, the main function of the filter screen is to prevent the column packing from being flushed out of the column by the mobile phase. In high-performance liquid chromatography analysis, the mobile phase continuously passes through the chromatographic column. If there is no filter screen, the column packing may be gradually lost due to the flushing of the mobile phase, which will seriously affect the separation effect and performance of the chromatographic column. Secondly, the filter screen can also effectively filter out impurities and particulate matter in the mobile phase. If these impurities and particulate matter directly enter the chromatographic column, they may block the column pores and affect the permeability and separation effect of the column. Therefore, the presence of the filter screen can ensure the purity of the mobile phase, thereby improving the accuracy and reliability of chromatographic analysis.

[0003] Through searching, Chinese patent announcement number "CN218865856U" discloses a liquid chromatography column tube, including a column tube, both ends of the inner wall of the column tube are provided with mounting grooves, and a detachable double-layer filtering mechanism is connected to the two mounting grooves, and the double-layer filtering mechanism includes a tube body, a filter plate is installed in the tube body and at the outer end, a sieve plate is installed in the tube body and at a position close to the inner end, and an annular limit block is provided on the outer wall of the tube body and at the outer end, and a second sealing ring is provided between the annular limit block and the column tube. The column tube of the liquid chromatography column has a double-layer filtering mechanism installed in the column tube through the mounting groove, so that the liquid chromatography column using the column tube has a better filtering effect, and the double-layer filtering mechanism is easy to disassemble and assemble, so that it is convenient for users to disassemble and clean the double-layer filtering mechanism; the first sealing ring, the second sealing ring and the third sealing ring can ensure the sealing of the connection between the column tube, the double-layer filtering mechanism and the pressure cap.

[0004] With respect to the above-mentioned related technologies, the utility model inventor found the following defects:

[0005] During use, the above-mentioned pipe column mainly relies on threads to assist in the installation of the filter. During use, the double-layer filter mechanism needs to be twisted when the filter is disassembled and assembled, so that the threads of the double-layer filter mechanism are loosened for disassembly and assembly. The threaded installation method is relatively cumbersome and inconvenient. Due to the setting of the filter, the impurities filtered out are very easy to enter the threads, thereby causing the threads to be mixed with fine impurities, resulting in it being more laborious to twist the threads and the whole being difficult to disassemble and assemble. At the same time, during use, the filter is set flat, and the impurities filtered out will inevitably adhere to the outer surface of the filter. If things go on like this for a long time, it will inevitably lead to the filter being blocked. It can be seen that the overall filtering and screening efficiency is poor, and it can be seen that the filter is very prone to blockage. Therefore, this device has certain defects and shortcomings and needs to be improved. Utility Model Content

[0006] In order to improve the overall anti-blocking performance and the convenience of disassembly and assembly of the device, the present application provides a liquid chromatography column tube.

[0007] The present application provides a liquid chromatography column tube, which adopts the following technical solution: comprising a tube body, both ends of which are fixedly installed with an outer sleeve, the inner part of the outer sleeve is plugged with a filter mechanism, the outer side of the filter mechanism is movably installed with a connecting tube, the outer side of the connecting tube is fixedly installed with a clamping mechanism, and the connecting tube is installed on the outer side of the outer sleeve through the clamping mechanism;

[0008] The filtering mechanism includes a sleeve tube, which is arranged in a ring shape with equal intervals and fixedly installed inside the sleeve, a plug rod is inserted into the inside of the sleeve tube, an annular rail is fixedly installed on the outer end of the plug rod, a driving component is rotatably connected inside the annular rail, a filter screen cover is fixedly installed on the outer side of the annular rail, and a cleaning component is fixedly installed on the outer end of the driving component through the filter screen cover.

[0009] Optionally, an internal thread is provided inside the connecting pipe, and a plug is threadedly connected to the outer end of the connecting pipe, and anti-slip bumps are fixedly installed at equal intervals on the outer surface of the plug.

[0010] Optionally, the driving assembly includes a slip ring, which is 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 part of the connecting rod, a worm gear is fixedly installed on one end of the rotating shaft close to the tube body, the outer side of the rotating shaft passes through the filter screen cover and is fixedly connected to the cleaning assembly, the overall cross-sectional shape of the filter screen cover is conical, and the outer end of the rotating shaft is rotatably connected to the inner end of the connecting tube.

[0011] Optionally, the cleaning assembly includes side rods, which are arranged in a ring at equal intervals and fixedly mounted on the outer end of the rotating shaft, a mounting frame is fixedly mounted on the outer side of the side rod, and a limit spring is fixedly mounted on the inner side of the mounting frame at equal intervals, a brush plate is fixedly mounted on the end of the limit spring, and the inner side of the brush plate is fit-connected to the outer side of the filter cover.

[0012] 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.

[0013] Optionally, a side frame is fixedly mounted on the outer end of the mounting frame, and a ball is rotatably connected to a side of the side frame close to the filter screen cover, and the inner side of the ball is fitted and connected to the outer surface of the filter screen cover.

[0014] Optionally, the clamping 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 part of the outer surface of the connecting tube, the third mounting ring is fixedly mounted on the outer surface of the connecting tube at one end away from the first mounting ring, an elastic buckle assembly is fixedly mounted on the outer side of the third mounting ring, a magnetic seat is fixedly mounted on the outer side of the first mounting ring, and the elastic buckle assembly and the magnetic seat are clamped to each other.

[0015] Optionally, the elastic buckle assembly includes a concave seat, which is arranged in a ring at equal intervals and fixed on the outer side of a third mounting ring, a telescopic spring is fixedly installed on the inner side of the concave seat, a hinge seat is fixedly installed on the end of the telescopic spring, the inner side of the hinge seat is fixedly connected to the second mounting ring, the inner side of the hinge seat is rotatably connected to a limit rod, a clamping seat is fixedly installed on the outer side of the limit rod, and the clamping seat and the magnetic seat are clamped with each other.

[0016] Optionally, a limiting groove is provided on the inner side of the magnetic seat, a trapezoidal limiting angle groove is provided at the inner inner end of the limiting groove, the inner end of the socket is also trapezoidal, the right-angled side on the inner side of the socket and the right-angled side in the trapezoidal limiting angle groove are fitted and connected, the socket is made of iron material, and the socket and the magnetic seat are magnetically connected.

[0017] Optionally, a supporting rod is fixedly mounted on the outer end of the hinged seat, and the end of the supporting rod passes through the concave seat.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. By setting up a filtering mechanism, when the device is in use, the liquid circulates in the tube body, driving the worm gear to rotate, and then driving the rotating shaft and the side rod to rotate. In this process, the liquid is filtered through the filter screen, and the rotation of the side rod drives the mounting frame to drive the brush plate to rotate on the outside of the filter screen. The brush plate fits the outer surface of the filter screen under the action of the limit spring, effectively brushing off the attached impurities to avoid affecting the filtration efficiency. The filter screen is designed in a conical shape, which not only facilitates the gathering of impurities and avoids blockage, but also increases the filtration area, improves the circulation and filtration efficiency. Overall, the device is cleverly designed, high in filtration efficiency, and excellent in performance.

[0020] 2. By setting up a clamping mechanism, the device can conveniently install the connecting pipe and the filtering mechanism. The filtering mechanism is inserted into the outer sleeve, and then the connecting pipe is inserted. By squeezing the second mounting ring and utilizing the magnetic force of the telescopic spring and the magnetic seat, the clamping seat is firmly clamped into the limiting groove to achieve stable installation. When disassembling, only the second mounting ring needs to be pressed and the limiting rod needs to be rotated to quickly separate the connecting pipe and the filtering mechanism. In addition, the connecting pipe can be quickly sealed through the connection of the internal thread and the plug, which is flexible to use. The clamping mechanism of the device is cleverly designed, easy to operate, and can be quickly disassembled and assembled, thereby improving ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of the structure of the filter mechanism, the clamping mechanism and the external pipe in the disassembled state in the embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of the internal structure of the filtering mechanism and the clamping mechanism in the embodiment of the present application;

[0024] Figure 4 It is a structural schematic diagram of the filtering mechanism and the clamping mechanism in the embodiment of the present application;

[0025] Figure 5 It is a structural schematic diagram of the clamping mechanism in the embodiment of the present application;

[0026] Figure 6 It is a structural schematic diagram of the filtering mechanism in the embodiment of the present application;

[0027] Figure 7 It is a schematic diagram of the structure of the driving component and the cleaning component in the embodiment of the present application;

[0028] Figure 8 It is a structural schematic diagram of the filter mechanism in the disassembled state in the embodiment of the present application;

[0029] Fig. 9 It is a schematic diagram of the structure inside the outer sleeve in the embodiment of the present application.

[0030] Figure numerals: 1, tube body; 2, outer sleeve; 3, filter mechanism; 31, sleeve tube; 32, plug rod; 33, ring 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 frame; 363, limit spring; 364, brush plate; 365, support rod; 366, side frame ; 367, ball bearing; 4, connecting tube; 5, clamping mechanism; 51, first mounting ring; 52, second mounting ring; 53, third mounting ring; 54, magnetic seat; 55, elastic buckle assembly; 551, concave seat; 552, telescopic spring; 553, hinged seat; 554, limiting rod; 555, clamping seat; 56, limiting groove; 57, trapezoidal limiting angle groove; 58, supporting rod; 6, internal thread; 7, plug. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-9 This application is described in further detail.

[0032] The present application embodiment discloses a liquid chromatography column tube. Figure 1 As shown, it comprises a tube body 1, both ends of the tube body 1 are fixedly mounted with an outer sleeve 2, a filtering mechanism 3 is inserted inside the outer sleeve 2, a connecting tube 4 is movably mounted on the outer side of the filtering mechanism 3, a clamping mechanism 5 is fixedly mounted on the outer side of the connecting tube 4, and the connecting tube 4 is mounted on the outer side of the outer sleeve 2 through the clamping mechanism 5;

[0033] The filter mechanism 3 includes a sleeve tube 31, which is arranged in a ring shape with equal intervals and fixedly installed inside the sleeve, a plug rod 32 is inserted into the interior of the sleeve tube 31, and a ring rail 33 is fixedly installed on the outer end of the plug rod 32, and a driving component 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 component 36 is fixedly installed on the outer end of the driving component 35 through the filter screen 34. The design of the outer sleeve 2 allows the filter mechanism 3 to be easily inserted and fixed, which not only improves the installation efficiency, but also ensures the stability of the filter mechanism 3 during use. The ingenious combination of the sleeve tube 31, the plug rod 32, the ring rail 33 and other components in the filter mechanism 3 allows the filter screen 34 to be smoothly installed and work stably, and the added The driving assembly 35 can drive the cleaning assembly 36 to clean the filter screen cover 34 through the connection between the annular rail 33 and the plug rod 32. This not only avoids the problem of impurities accumulating on the filter screen cover 34 during the filtration process and improves the filtration efficiency, but also prolongs the service life of the filter screen cover 34. Finally, the design of the clamping mechanism 5 between the connecting tube 4 and the outer sleeve 2 enables the connecting tube 4 to be easily and quickly installed on the outer sleeve 2. This clamping method is not only firm and reliable, but also very convenient to disassemble, which greatly improves the convenience of using the liquid chromatography column. In general, the design of the column tube of this liquid chromatography column fully considers the stability and convenience during use, and at the same time adds an automatic cleaning function, which greatly improves its working efficiency and service life.

[0034] Please refer to Figure 2 The interior of the connecting tube 4 is provided with an internal thread 6, and the outer end of the connecting tube 4 is threadedly connected with a plug 7, and the outer surface of the plug 7 is fixedly installed with anti-slip bumps at equal intervals. The connecting tube 4 part in the design scheme of the liquid chromatography column tube has some unique characteristics. First, the interior of the connecting tube 4 is provided with an internal thread 6. This design enables the connecting tube 4 to be connected to other components through threads to achieve a stable and reliable connection. Secondly, the outer end of the connecting tube 4 adopts a threaded connection plug 7 design. The existence of the plug 7 can effectively prevent the liquid from leaking from the outer end of the connecting tube 4, ensuring the liquid chromatography The analysis process proceeds smoothly. In addition, the outer surface of the plug 7 is fixedly installed with anti-slip bumps at equal intervals. This design not only enhances the anti-slip performance of the plug 7, making it more convenient and labor-saving when tightening or loosening the plug 7, but also improves the safety of operation and avoids accidental injuries caused by hand slippage. The design of the connecting tube 4 comprehensively considers the stability, sealing, convenience and safety of the connection, and 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.

[0035] Please refer to Figure 8The cleaning assembly 36 includes a side rod 361, which is arranged in a ring at equal intervals and fixedly installed on the outer end of the rotating shaft 353. A mounting frame 362 is fixedly installed on the outer side of the side rod 361, and a limit spring 363 is fixedly installed on the inner side of the mounting frame 362 at equal intervals. A brush plate 364 is fixedly installed on the end of the limit spring 363. The inner side of the brush plate 364 and the outer side of the filter screen cover 34 are fitted and connected. The cleaning assembly 36 is mainly composed of side rods 361, mounting frames 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 enables the side rods 361 to rotate synchronously with the rotation of the rotating shaft 353. The mounting frame 362 is fixedly installed on the outer side of the side rods 361. The side rod 361 provides a stable supporting structure for the limit spring 363 and the brush plate 364. One end of the limit 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 limit spring 363, ensuring that the brush plate 364 can fit tightly against the outer surface of the filter screen cover 34, and the inner side of the brush plate 364 and the outer surface of the filter screen cover 34 fit tightly. With the rotation of the side rod 361, the brush plate 364 can brush and clean the outer surface of the filter screen cover 34. In this way, impurities attached to the filter screen cover 34 can be effectively removed, thereby ensuring the filtration efficiency and flow performance of the filter screen cover 34. At the same time, the existence of the limit spring 363 not only The fit of the brush plate 364 is ensured, and a certain buffering effect can be provided when the brush plate 364 encounters resistance, thereby preventing the brush plate 364 from being excessively worn or damaged. The design of the cleaning assembly 36 not only ensures the filtering efficiency of the filter screen cover 34, but also can effectively clean the impurities on the filter screen, thereby improving the overall performance and service life of the liquid chromatography column tube. The driving assembly 35 includes a slip ring 351, and the slip ring 351 is slidably connected to the inner side of the annular rail. A connecting rod 352 is fixedly installed on the inner side of the slip ring 351, and a rotating shaft 353 is rotatably connected to the middle part of the connecting rod 352. A worm gear 354 is fixedly installed on one end of the rotating shaft 353 close to the tube body 1, and the outer side of the rotating shaft 353 passes through the filter screen cover 34 and is fixedly connected to the cleaning assembly 36. The overall cross-sectional view of the filter screen cover 34 is as follows: The surface shape is set in 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 the liquid chromatography column tube, the structure of the driving component 35 is very delicate and efficient. 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 driving component 35 on the filtering mechanism 3. The ingenious combination of the connecting rod 352 and the rotating shaft 353 enables the sliding action of the slip ring 351 to be converted into the rotation action of the rotating shaft 353, thereby driving the entire cleaning component 36 to work. In particular, the design of the worm gear 354 installed at one end of the rotating shaft 353 close to the tube body 1 not only makes the rotation action of the rotating shaft 353 more stable, but also can drive the worm gear 354 to rotate through the flow of liquid, thereby driving the entire driving component 35 to work.This design not only makes full use of the energy of liquid flow, but also makes the entire filtering and cleaning process more automated and efficient. In addition, the overall cross-sectional shape of the filter screen 34 is set in a conical shape. This design not only increases the filtering area, but also improves the filtering efficiency.

[0036] Please refer to Figure 6 , support rods 365 are fixedly installed on the outside of the brush plate 364 at equal intervals, and the outer ends of the support rods 365 pass through the mounting frame 362. The existence of the support rods 365 enables the brush plate 364 to maintain a more stable posture under the action of the limit spring 363. Since the brush plate 364 needs to fit closely on the outer surface of the filter screen cover 34, if there is no support from the support rods 365, the brush plate 364 may shake or deform during the cleaning process, thereby affecting the cleaning effect. The support rods 365 pass through the mounting frame 362 to provide a solid supporting foundation for the brush plate 364, so that the brush plate 364 can maintain a stable posture and perform efficient cleaning work. Secondly, the support rods 365 can also increase the brush plate 364 and the filter screen cover 34 The contact area between them, since the support rods 365 are fixedly installed on the outside of the brush plate 364 at equal intervals, when the brush plate 364 moves on the filter screen cover 34, the support rods 365 can make the brush plate 364 fit more evenly on the outer surface of the filter screen cover 34, thereby achieving comprehensive cleaning of the filter screen cover 34, which can not only improve the cleaning effect but also extend the service life of the filter screen cover 34. In addition, the design of the support rods 365 also takes into account the convenience of operation. By running through the mounting frame 362, the brush plate 364 is more convenient to install and disassemble. If the brush plate 364 needs to be replaced or repaired, it only needs to be removed from the mounting frame 362 from the side rod 361 for easy operation.

[0037] Please refer to Figure 7The outer end of the mounting frame 362 is fixedly mounted with a side frame 366, and the side frame 366 is rotatably connected to the side of the filter screen cover 34, and the inner side of the ball 367 is fitted and connected to the outer surface of the filter screen cover 34. The side frame 366 fixedly mounted on the outer end of the mounting frame 362 not only provides a stable support for the ball 367, but also ensures that the ball 367 can be stably fitted on the outer surface of the filter screen cover 34. The design of the ball 367 is the highlight of this part. The side close to the filter screen cover 34 is tightly fitted with the outer surface of the filter screen cover 34. When the side rod 361 rotates with the rotating shaft 353, the ball 367 can roll on the filter screen cover 34. Compared with the sliding of the traditional brush plate 364, this rolling action has With smaller friction resistance and higher cleaning efficiency, the ball 367 can easily scrape off impurities attached to the filter screen cover 34, while avoiding wear and heat accumulation caused by friction. In addition, the rolling action of the ball 367 can also make the cleaning process more uniform and continuous. Since the ball 367 can roll smoothly on the filter screen cover 34, it can ensure that the outer surface of the entire filter screen cover 34 is evenly cleaned, avoiding the problem of decreased filtration efficiency due to uneven cleaning. The design of installing the side frame 366 and the ball 367 not only improves the cleaning efficiency and performance of the cleaning component 36, but also extends the service life of the filter screen cover 34, providing a strong guarantee for the stable operation of the liquid chromatography column tube.

[0038] Please refer to Figure 5The clamping 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 part of the outer surface of the connecting tube 4, the third mounting ring 53 is fixedly mounted on the end of the outer surface of the connecting tube 4 away from the first mounting ring 51, an elastic buckle 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, and the elastic buckle assembly 55 and the magnet seat 54 are clamped with each other. Firstly, the first mounting ring 51 is fixedly mounted on the outer surface of the outer sleeve 2, providing a stable mounting foundation for the entire clamping mechanism 5, and the second mounting ring 52 is slidably connected to the middle part of the outer surface of the connecting tube 4, which allows the second mounting ring 52 to slide freely on the connecting tube 4, making it easy to adjust its position to meet different installation requirements. The third mounting ring 53 is fixedly installed at one end of the connecting tube 4 away from the first mounting ring 51, and together with the second mounting ring 52, forms a clamping structure for the connecting tube 4. It is particularly worth mentioning that an elastic buckle assembly 55 is fixedly installed on the outer side of the third mounting ring 53, and a magnetic seat 54 is fixedly installed on the outer side of the first mounting ring 51. This design allows the elastic buckle assembly 55 and the magnetic seat 54 to be mutually engaged, thereby realizing a fast connection between the connecting tube 4 and the outer sleeve 2. When disassembly is required, it is only necessary to overcome the elastic force of the elastic buckle assembly 55 to remove the connecting tube 4 from the outer sleeve 2. The operation is simple and quick. In addition, the coordinated use of the elastic buckle assembly 55 and the magnetic seat 54 not only increases the stability and reliability of the connection, but also reduces the noise and vibration generated during the connection process, thereby improving the overall performance of the device.

[0039] Please refer to Figure 4The elastic buckle assembly 55 includes a concave seat 551, which is arranged in a ring at equal intervals and fixedly installed on the outer side 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. The inner side of the hinge seat 553 is rotatably connected to the limit rod 554. The outer side of the limit rod 554 is fixedly installed with a clamping seat 555. The clamping seat 555 and the magnet seat 54 are mutually clamped. Then, the concave seats 551 are arranged in a ring at equal intervals and fixedly installed on the outer side of the third mounting ring 53. This layout allows the elastic buckle assembly 55 to be evenly distributed on the periphery of the connecting pipe 4, ensuring the stability of the connection and uniform force. The telescopic spring 552 inside 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 toward the first mounting ring 51 under the action of external force, and the hinged 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 clamping seat 555 to move toward the magnetic seat 54. Once the clamping seat 555 contacts the magnetic seat 54, due to the magnetic force of the magnetic seat 54, the clamping seat 555 will be firmly adsorbed on the magnetic seat 54, thereby realizing the fastening 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 column tube of the liquid chromatography column will not loosen due to vibration during use. When the connecting tube 4 needs to be disassembled When the second mounting ring 52 is pushed away from the magnetic seat 54, the telescopic spring 552 is compressed, the hinge seat 553 and the limit rod 554 rotate accordingly, so that the clamping seat 555 is separated from the magnetic seat 54. In this way, the connecting tube 4 can be easily removed from the outer sleeve 2. The elastic buckle assembly 55 realizes a fast, reliable and detachable connection between the connecting tube 4 and the outer sleeve 2 through its unique structure and working principle, which greatly improves the convenience and flexibility of using the liquid chromatography column.

[0040] Please refer to Figure 5The inner side of the magnet seat 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 clamping seat 555 is also trapezoidal, and the inner right-angled side of the clamping seat 555 is fitted and connected with the right-angled side in the trapezoidal limiting angle groove 57. The clamping seat 555 is made of iron material. The clamping seat 555 and the magnet seat 54 are magnetically connected. The detailed design of the magnet seat 54 and the clamping seat 555 further enhances the stability and reliability of the clamping mechanism 5. The limit groove 56 not only provides installation space for the card holder 555, but also ensures that the card holder 555 can be accurately aligned when inserted. The trapezoidal limit angle groove 57 inside the limit groove 56 cooperates with the trapezoidal structure inside the card holder 555, so that the card holder 555 can be guided by the trapezoidal structure when inserted into the limit groove 56, making it easier to achieve accurate docking. At the same time, the right-angled side of the trapezoidal structure fits the connection and also increases the stability and tightness of the connection. The card holder 555 is made of iron material. The clamping seat 555 is made of a material, which enables the clamping seat 555 to be magnetically connected with the magnet seat 54. When the clamping seat 555 is inserted into the limiting groove 56 and contacts with the magnet seat 54, due to the magnetic force of the magnet seat 54, the clamping seat 555 will be firmly adsorbed on the magnet seat 54, thereby realizing a fast connection between the connecting tube 4 and the outer sleeve 2. This magnetic connection is not only firmly connected, but also easy to disassemble. The clamping seat 555 can be pulled out from the magnet seat 54 by simply overcoming the magnetic force. In addition, this design also takes into account the safety and stability of the connection. Since the connection between the clamping seat 555 and the magnet seat 54 is achieved through magnetic force, the connection is not easy to loosen or fall off when subjected to external impact or vibration, thereby ensuring the stability and safety of the liquid chromatography column tube during use. The detailed design of the magnet seat 54 and the clamping seat 555 realizes a fast, stable and detachable connection between the connecting tube 4 and the outer sleeve 2 through the characteristics of magnetic connection, trapezoidal structure guidance and iron material.

[0041] Please refer to Figure 3The outer end of the hinge seat 553 is fixedly mounted with a supporting rod 58, and the end of the supporting rod 58 passes through the concave seat 551. First, the existence of the supporting 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 an external force, the hinge seat 553 will rotate accordingly, and the supporting rod 58 passes through the concave seat 551, which effectively limits the movement range of the hinge seat 553 and prevents it from excessive rotation or displacement, thereby ensuring the stability and reliability of the entire clamping mechanism 5. Secondly, the coordinated use of the supporting rod 58 and the concave seat 551 also realizes the guidance of the telescopic spring 552 And supporting role, during the clamping process, when the telescopic spring 552 is compressed, the supporting rod 58 can provide it with a stable supporting point, so that the telescopic spring 552 can be evenly stressed and compressed smoothly, which helps to maintain the balance and stability of the entire clamping mechanism 5 and avoid damage or failure due to uneven force. In addition, the design of the supporting rod 58 also takes into account the convenience and safety of operation. Since it runs through the concave seat 551, the operator can clearly see the position and status of the supporting 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 the operation.

[0042] The implementation principle of a liquid chromatography column tube of the embodiment of the present application is as follows: by setting the filtering mechanism 3, during the use of the device, when the liquid is located in the tube body 1 and circulates, the circulated liquid can drive the worm gear 354 to rotate, and the rotation of the worm gear 354 can drive the rotation of the rotating shaft 353, and the rotation of the rotating shaft 353 can drive the side rod 361 to rotate. In this process, the water can be assisted by the filter screen cover 34 for filtering. During the filtering process, as the rotating shaft 353 drives the side rod 361 to rotate, the side rod 361 can drive the mounting frame 362 located on the outside of the filter screen cover 34 to rotate, and the rotation of the mounting frame 362 can drive the brush plate 364 to rotate on the outside of the filter screen cover 34. At this time, the limit spring 36 is used. The friction reset drives the brush plate 364 to fit the outer surface of the filter screen cover 34, which can stably brush and clean the outer surface of the filter screen cover 34, and can avoid the problem that the filtered impurities adhere to the outer surface of the filter screen cover 34 and affect its filtering efficiency. At the same time, during the filtering process, since the filter screen cover 34 is in a conical shape, the swept impurities can be guided by the inclined surface of the outer surface of the filter screen cover 34, so that the impurities gather on the outside of the filter screen cover 34, which can avoid the filter screen cover 34 from being blocked. At the same time, the conical filter screen cover 34 can increase the filtering area, thereby improving the flow efficiency inside the tube body 1, making the overall filtering efficiency of the device more efficient, and can improve the overall performance of the device.

[0043] By providing the clamping mechanism 5, when the device is in use, when it is necessary to install the connecting tube 4 and the filter mechanism 3, the plug rod 32 of the filter mechanism 3 can be inserted into the inside of the sleeve tube 31, and the outer end of the plug rod 32 is installed with a ring rail. At this time, the entire filter mechanism 3 can be installed on the inner side of the outer sleeve 2. At this time, the connecting tube 4 is inserted into the inside of the outer sleeve 2, and the second mounting ring 52 is further squeezed. The second mounting ring 52 pulls the telescopic spring 552 to stretch, and at the same time, the second mounting ring 52 pushes the limit rod 554 to drive the clamping seat 555 moves toward the magnetic seat 54, and the magnetic seat 555 is attracted by the magnetic force of the magnetic seat 54 and is inserted into the inner side of the limiting groove 56. At this time, the inner end of the seat 555 is inserted into the inner side of the trapezoidal limiting groove 56, and the right-angled side of the seat 555 and the right-angled side of the trapezoidal limiting angle groove 57 are fitted, and it is magnetically connected to the magnetic seat 54. At the same time, the telescopic spring 552 is reset to provide elastic force when it is extended, so that the limiting rod 554 pulls the seat 555 toward the first installation ring 51. It can be seen that after the installation is completed, the telescopic spring 552 provides The elastic force causes the clamping seat 555 to be tightened, and the clamping seat 555 is further fixed by the magnetic force of the magnet seat 54. At the same time, the right-angled sides thereof are in contact with each other for a rigid connection. It can be seen that the clamping mechanism 5 can stably clamp and install the connecting tube 4 inside the outer sleeve 2. When disassembly is required, it is only necessary to adjust and press the second mounting ring 52. The second mounting ring 52 further stretches the telescopic spring 552. At this time, the clamping seat 555 is separated 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 clamping seat 55 are moved into position. 5 is completely detached, so that the device can quickly separate the connecting pipe 4 installed in the outer sleeve 2, and the filtering mechanism 3 can be directly taken out at this time. It can be seen that when the filtering mechanism 3 needs to be disassembled, the connecting pipe 4 and the filtering mechanism 3 can be quickly disassembled and assembled by pushing the second mounting ring 52 to move, so that the filtering mechanism 3 of the device as a whole can be quickly disassembled and assembled. At the same time, during its use, the connecting pipe 4 can be quickly sealed through the threaded connection of the internal thread 6 and the plug 7, which makes the device flexible to use and improves the overall convenience of use of the device.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A liquid chromatography column tube, comprising a tube body (1), characterized in that: An outer sleeve (2) is fixedly mounted on both ends of the tube body (1), and a filtering mechanism (3) is inserted into the interior of the outer sleeve (2); The filtering mechanism (3) comprises a sleeve tube (31), the sleeve tubes (31) are arranged in a ring shape at equal intervals and fixedly installed inside the sleeve, a plug rod (32) is inserted inside the sleeve tube (31), an annular rail (33) is fixedly installed on the outer end of the plug rod (32), a driving component (35) is rotatably connected inside the annular rail (33), a filter screen (34) is fixedly installed on the outer side of the annular rail (33), and a cleaning component (36) is fixedly installed on the outer end of the driving component (35) that penetrates the filter screen (34); The driving assembly (35) comprises a slip ring (351), wherein the slip ring (351) is slidably connected to the inner side of the 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 part of the connecting rod (352), a worm gear (354) is fixedly installed on one end of the rotating shaft (353) close to the tube body (1), the outer side of the rotating shaft (353) passes through the filter screen cover (34) and is fixedly connected to the cleaning assembly (36), the overall cross-sectional shape of the filter screen cover (34) is set in a conical shape, and the outer end of the rotating shaft (353) is rotatably connected to the inner end of the connecting pipe (4); The cleaning assembly (36) comprises a side rod (361), the side rods (361) are arranged in a ring at equal intervals and fixedly mounted on the outer end of the rotating shaft (353), a mounting frame (362) is fixedly mounted on the outer side of the side rod (361), and a limit spring (363) is fixedly mounted on the inner side of the mounting frame (362) at equal intervals, and a brush plate (364) is fixedly mounted on the end of the limit spring (363), and the inner side of the brush plate (364) is in close contact with the outer surface of the filter screen cover (34).

2. A liquid chromatography column tube according to claim 1, characterized in that: Support rods (365) are fixedly mounted at equal intervals on the outer side of the brush plate (364), and the outer ends of the support rods (365) penetrate the mounting frame (362).

3. A liquid chromatography column tube according to claim 1, characterized in that: A side frame (366) is fixedly mounted on the outer end of the mounting frame (362), and a ball (367) is rotatably connected to a side of the side frame (366) close to the filter screen cover (34), and the inner side of the ball (367) is fitted and connected to the outer surface of the filter screen cover (34).

4. The liquid chromatography column tube according to claim 1, characterized in that: A connecting pipe (4) is movably mounted on the outside of the filtering mechanism (3), an internal thread (6) is provided inside the connecting pipe (4), a plug (7) is threadedly connected to the outer end of the connecting pipe (4), and anti-slip bumps are fixedly mounted at equal intervals on the outer surface of the plug (7).

5. The liquid chromatography column tube according to claim 1, characterized in that: A clamping mechanism (5) is fixedly mounted on the outer side of the connecting tube (4). The connecting tube (4) is mounted on the outer side of the outer sleeve (2) through the clamping mechanism (5). The clamping mechanism (5) comprises 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 part of the outer surface of the connecting tube (4). The third mounting ring (53) is fixedly mounted on an end of the outer surface of the connecting tube (4) away from the first mounting ring (51). An elastic buckling 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 buckling assembly (55) and the magnet seat (54) are mutually clamped.

6. A liquid chromatography column tube according to claim 5, characterized in that: The elastic buckle assembly (55) comprises a concave seat (551), the concave seats (551) are arranged in a ring at equal intervals and fixedly mounted on the outer side of the third mounting ring (53), a telescopic spring (552) is fixedly mounted on the inner side of the concave seat (551), an articulated seat (553) is fixedly mounted on the end of the telescopic spring (552), the inner side of the articulated seat (553) is fixedly connected to the second mounting ring (52), the inner side of the articulated seat (553) is rotatably connected to a limiting rod (554), a clamping seat (555) is fixedly mounted on the outer side of the limiting rod (554), and the clamping seat (555) and the magnet seat (54) are mutually clamped.

7. A liquid chromatography column tube according to claim 6, characterized in that: A limiting groove (56) is provided on the inner side of the magnet seat (54), and a trapezoidal limiting angle groove (57) is provided at the inner end of the limiting groove (56). The inner end of the clamping seat (555) is also trapezoidal, and the inner right-angled side of the clamping seat (555) and the right-angled side in the trapezoidal limiting angle groove (57) are fitted and connected. The clamping seat (555) is made of iron material, and the clamping seat (555) and the magnet seat (54) are magnetically connected.

8. A liquid chromatography column tube according to claim 7, characterized in that: A supporting rod (58) is fixedly mounted on the outer end of the hinged seat (553), and the end of the supporting rod (58) passes through the concave seat (551).

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