Portable liquid chromatograph and method of using the same

Abstract

The present invention discloses a portable liquid chromatograph and a method for using the same, and the present invention relates to the technical field of liquid chromatographs. The portable liquid chromatograph and the method for using the same comprise a housing and a detection component installed in the housing for detecting and analyzing samples, wherein a carrying component for switching the working state of the housing and an adjusting component for switching the amount of space occupied by the housing are installed in the housing, wherein the carrying component comprises: a threaded rod, which is threadedly arranged in the housing for switching the working state of the housing, and a support plate is threadedly arranged on the threaded rod; during the transfer process, there will be no problem of inconvenience in going up and down stairs when the liquid chromatograph is moved by moving wheels, and there will be no problem of moving the liquid chromatograph by a fixed handle, but when it is transported and used at the destination, there is a great demand for the placement space of the liquid chromatograph, and the space required for placing the liquid chromatograph is reduced, making it more convenient to carry.

Description

Technical Field

[0001] The invention relates to the technical field of liquid chromatographs, in particular to a portable liquid chromatograph and a use method thereof. Background Art

[0002] Liquid chromatograph is an instrument that utilizes the difference in distribution ratio between liquid and solid or between two immiscible liquids to separate the mixture first and then analyze and identify it. It is widely used in biochemistry, food analysis, medical research, environmental analysis, inorganic analysis and other occasions, and has good use effect. As the demand for the use of liquid chromatographs gradually increases, the application scenarios are no longer limited to laboratories. In particular, in the process of using liquid chromatographs for environmental analysis, it is necessary to go to some areas with poor road conditions for sampling and testing. Therefore, a smaller and more portable liquid chromatograph is needed. The existing liquid chromatographs are generally large in size and cannot be carried and moved, which brings inconvenience to the use of liquid chromatographs. , and some liquid chromatographs have moving wheels added to the bottom to make the liquid chromatograph more convenient to move when in use, but it is still inconvenient when going to areas with poor road conditions or going up and down stairs. For example, a portable liquid chromatograph disclosed in Publication No. CN212586314U has this problem. Some liquid chromatographs, when carried, although the reagent bottles are fixed, these fixing components also occupy a large part of the storage space, reducing the storage space, and these reagent bottles are easily broken due to collision with other objects due to mistakes. For example, a portable liquid chromatograph disclosed in Publication No. CN212586314U has this problem;

[0003] Therefore, a portable liquid chromatograph and a method for using the same are proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a portable liquid chromatograph and a method for using the same, which solves the problem that when the liquid chromatograph is in use, moving wheels are added to the bottom to make the liquid chromatograph more convenient to move, but it is still inconvenient when traveling to areas with poor road conditions or going up and down stairs.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A portable liquid chromatograph comprises a housing and a detection component installed in the housing for detecting and analyzing samples, wherein a carrying component for switching the working state of the housing and an adjusting component for switching the amount of space occupied by the housing are installed in the housing, and the carrying component comprises:

[0006] A threaded rod, which is threadedly arranged in the casing and used for switching the working state of the casing, a support plate is threadedly arranged on the threaded rod, the top of the support plate is fixed to the top of the inner wall of the casing, an upper slider is movably installed at one end of the threaded rod, and one end of the upper slider is inclined;

[0007] An extrusion block is slidably abutted against one inclined end of the upper slider to assist in switching the working state of the casing. A guide column is slidably penetrated in the extrusion block, one end of the guide column is fixed to the top of the casing, a spring 1 is fixed to the top of the extrusion block, and the other end of the spring 1 is fixed to the top of the casing.

[0008] Preferably, the bottom of the extrusion block is slidably abutted against a lower slider, the bottom of the lower slider is fixed with a right guide plate, a guide rod is slidably passed through the right guide plate, the bottom of the guide rod is fixed to the bottom of the inner wall of the casing, a spring 2 is fixed on the side wall of the guide rod, the other end of the spring 2 is fixed in the right guide plate, one end of the right guide plate is fixed with a right carrying box, one end of the right carrying box is slidably passed through the casing, and a buckle is installed in the right carrying box.

[0009] Preferably, a positioning rod is fixed to the bottom of the upper slider, a left guide plate is fixed to one end of the positioning rod, a left carrying box is fixed to one end of the left guide plate, a spring three is fixed in the left carrying box, a fixed block is fixed to the other end of the spring three, one end of the fixed block is slidably inserted into the left carrying box, and a left guide rod fixed in the casing is slidably inserted into the left guide plate.

[0010] Preferably, the adjustment component includes a driving rod fixed on the side wall of the positioning rod, a rack is fixed to one end of the driving rod, a gear is meshed on the rack, the gear is a half gear, a rotating shaft is fixedly passed through the gear, both ends of the rotating shaft are movably mounted in the casing, a sliding sleeve is fixedly passed through the rotating shaft, a sliding table is slidably passed through the sliding sleeve, a water collecting box is fixed to one end of the sliding table, and a rubber curtain is fixed in the casing.

[0011] Preferably, the casing is also provided with a flip assembly for switching the amount of space occupied by the casing, the flip assembly includes a connecting rod fixed to the side wall of the right guide plate, an extension rod is fixed on the side wall of the connecting rod, an iron wire is fixed to the top of the connecting rod, a positioning plate is fixed to one end of the iron wire, a support column is fixed to the top of the positioning plate, a movable shaft is fixedly passed through the support column, both ends of the movable shaft are movably installed in the casing, and a fixing ring is slidably passed through the support column.

[0012] Preferably, the detection component includes a control panel fixed on the front side of the casing, a placement groove is provided on the top of the casing, a solvent bottle is placed in the placement groove, the fixing ring is sleeved on the solvent bottle, a connecting pipe is fixed on the solvent bottle, a cover plate is fixed on the connecting pipe, a sleeve is abutted on the side wall of the cover plate through a rubber pad, a socket is fixed on the side wall of the sleeve, a plug plate is fixed on the side wall of the cover plate, the socket and the plug plate are fixed by a pin, the connecting pipe is connected to a mixing box fixed on the top of the inner wall of the casing, the mixing box is connected to a liquid pump fixed on the top of the inner wall of the casing, the liquid pump is connected to an injector penetrated by the casing, and the injector is connected to a chromatographic column.

[0013] Preferably, the side wall of the chromatographic column is detachably mounted on the bottom of the inner wall of the casing via a fixing seat, and the chromatographic column is connected to a detector fixed on the bottom of the inner wall of the casing.

[0014] Preferably, a support rod is fixed to the bottom of the inner wall of the casing, an electromagnet 1 is fixed to the top of the support rod, a sliding rod is fixed to the side wall of the electromagnet 1, a magnet 1 is slidably penetrated on the sliding rod, a fixing rod is fixed to the side wall of the chromatographic column, one end of the fixing rod is slidably penetrated by a fixing plate fixed to the bottom of the inner wall of the casing, a magnet 2 is fixed on the fixing rod, and an electromagnet 2 is fixed on the side wall of the fixing plate.

[0015] The present invention also provides a method for using a portable liquid chromatograph, comprising the following steps:

[0016] S1, driving the carrying assembly to operate by rotating the threaded rod in the carrying assembly, switching the working state of the housing;

[0017] S2, in the process of switching the working state of the housing, adjusting the occupied space of the housing by synchronously operating the adjustment components;

[0018] S3, carrying the housing after switching the working state to an outdoor testing point by means of a carrying component;

[0019] S4. The housing provides support and protection for the detection component, and the various parts of the detection component cooperate with each other to perform detection and analysis operations;

[0020] S5. After the detection and analysis work is completed, the working state of the casing is switched again by the carrying component and the casing is carried back to the laboratory.

[0021] Preferably, the moving distance of the threaded rod is between 5-10 cm.

[0022] The present invention provides a portable liquid chromatograph and a method for using the same. Compared with the prior art, the portable liquid chromatograph has the following beneficial effects:

[0023] (1) The portable liquid chromatograph and its use method are provided with a housing, a control panel, a solvent bottle, a connecting pipe, a mixing box, a liquid pump, an injector, a chromatographic column, and a detector. The solvent bottle is filled with a mobile phase, and a syringe after extracting a sample is prepared. Then, the liquid pump is started by controlling the control panel. The mobile phase in the solvent bottle is extracted into the mixing box by the liquid pump through the connecting pipe, and mixed in the mixing box. The mixed mobile phase is continuously fed through the delivery pipe under the action of the liquid pump. The syringe that has extracted the sample is injected into the injector and mixed with the mobile phase. The mobile phase flows into the chromatographic column under the influence of the mobile phase for separation, and then flows into the detector. Different substances have different light absorption capabilities at different wavelengths. When the mobile phase with different substances (the sample separated by the chromatographic column) passes through the detector, it absorbs light energy and converts it into an electrical signal and transmits it to the data center for reception. The data center converts the electrical signal into a specific value and displays it to the detection personnel for analysis and identification. At the same time, the waste liquid after detection is discharged from the detector, which is convenient for researchers to use.

[0024] (2) The portable liquid chromatograph and its use method are provided with a threaded rod, a support plate, an upper slider, an extrusion block, a guide column, a spring 1, a lower slider, a right guide plate, a guide rod, a spring 2, a right carrying box, a buckle, a positioning rod, a left guide plate, a left carrying box, a fixed block, and a spring 3. When the liquid chromatograph needs to be carried outdoors for detection operations, the left and right carrying boxes are extended from the housing by rotating the threaded rod, the buckle is taken out of the right carrying box, and the buckle is inserted into the left carrying box. At this time, the entire liquid chromatograph can be carried by a shoulder strap. During the transfer process, there will be no problem of inconvenience in going up and down stairs when using the moving wheels to move the liquid chromatograph, and there will be no problem of using a fixed handle to move the liquid chromatograph. However, when transporting and using the liquid chromatograph at the destination, a large amount of space is required to place the liquid chromatograph. At the same time, the hidden design can prevent dust and other debris from falling into the left and right carrying boxes to cause the shoulder straps to become dirty. At the same time, the space required for placing the liquid chromatograph can be reduced, making it more convenient to carry.

[0025] (3) The portable liquid chromatograph and its use method are provided with connecting rods, iron wires, positioning plates, support columns, movable shafts, extension rods, fixing rings, sleeves, cover plates, and latches. When the liquid chromatograph needs to be transferred for carrying, the latches are pulled out and the cover plates are separated from the sleeves. Then, the fixing rings can be held and moved upwards to remove the solvent bottle, thereby preventing the solvent bottle from falling off the casing during the transfer of the liquid chromatograph. At this time, by rotating the threaded rod, the support columns can be tilted toward the side where the solvent bottle is located and finally fall into the placement groove provided on the top of the casing. In the process of transferring the liquid chromatograph by vehicle, not only the space volume required for the liquid chromatograph can be reduced, but also some paper materials or light materials can be placed on the top of the casing to increase the cargo capacity of a single transfer, which is convenient for fixing the solvent bottle without increasing the space volume required during the transfer of the liquid chromatograph, making it more convenient to carry.

[0026] (4) The portable liquid chromatograph and its use method are provided with a driving rod, a rack, a gear, a rotating shaft, a sliding sleeve, a slide, a water receiving box, and a rubber curtain. When the liquid chromatograph needs to be transferred for carrying, the waste liquid in the water receiving box is poured out and cleaned, and the water receiving box can be carried together with the disassembled solvent bottle, or the water receiving box can be installed back on the sliding sleeve. At this time, when the threaded rod is rotated to adjust the position of the left and right carrying boxes, the positioning rod will synchronously drive the driving rod to move, so that the water receiving box turns 180 degrees with the rotating shaft as the axis and enters the housing through the rubber curtain. , avoiding the water receiving box being exposed outside the casing and occupying storage space during the process of carrying and transferring the liquid chromatograph, and at the same time making it easy to disassemble and clean the water receiving box for receiving waste liquid. When the liquid chromatograph is transferred and placed, it is put into use again. With the retraction of the right carrying box, under the action of the driving rod, the sliding sleeve, the sliding table and the water receiving box can be turned over with the rotating shaft as the axis so that the water receiving box is reset to its initial state again, making it easy to disassemble and clean the water receiving box without increasing the space volume required during the transfer of the liquid chromatograph, making it more convenient to carry.

[0027] (5) The portable liquid chromatograph and its use method are provided with a magnet 1, an electromagnet 1, a support rod, a magnet 2, a fixing rod, a fixing plate, and an electromagnet 2. When the portable liquid chromatograph is carried out outdoors for detection and analysis, after a sample is detected, the control panel is used to control the operation of the replacement component, so that the magnet 2 drives the chromatographic column to be replaced, and after another unused chromatographic column is switched to the detection position, the control panel is used to control the electromagnet 1 to start the magnetic repulsion with the magnet 1, so that the magnet 1 drives the delivery tube to be inserted into the chromatographic column again, and the unused chromatographic column is connected to the pipeline, and the next sample can be detected. At the same time, replacing the chromatographic column once can detect two groups of samples, and there is no need to replace a chromatographic column after detecting a sample, thereby improving the efficiency of outdoor detection and analysis operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the position of the water receiving box of the present invention;

[0030] Figure 3 The internal structure diagram of the casing of the present invention;

[0031] Figure 4 Another schematic diagram of the interior of the housing of the present invention from another perspective;

[0032] Figure 5 It is a structural diagram of the carrying assembly of the present invention;

[0033] Figure 6 It is a schematic diagram of the position of the spring 2 of the present invention;

[0034] Figure 7 is an internal structural diagram of the left carrying box of the present invention;

[0035] Figure 8 It is a structural diagram of the flip assembly of the present invention;

[0036] Fig. 9 It is a structural diagram of the regulating assembly of the present invention;

[0037] Fig.10 It is a structural diagram of the sleeve of the present invention;

[0038] Fig.11 It is a structural diagram of the replacement components of the present invention.

[0039] In the figure: 1, housing; 11, control panel; 12, solvent bottle; 13, connecting pipe; 14, mixing box; 15, liquid pump; 16, injector; 17, chromatographic column; 171, fixed seat; 18, detector; 2, threaded rod; 21, support plate; 22, upper slider; 23, extrusion block; 24, guide column; 25, spring 1; 26, lower slider; 27, right guide plate; 28, guide rod; 29, spring 2; 210, right carrying box; 211, buckle; 212, positioning rod; 213, left guide plate; 214, left carrying Box; 215, fixed block; 216, spring three; 3, connecting rod; 31, iron wire; 32, positioning plate; 33, support column; 34, movable shaft; 35, extension rod; 36, fixing ring; 37, sleeve; 38, cover plate; 39, latch; 4, driving rod; 41, rack; 42, gear; 43, rotating shaft; 44, sliding sleeve; 45, slide; 46, water collection box; 47, rubber curtain; 5, magnet one; 51, electromagnet one; 52, support rod; 53, magnet two; 54, fixing rod; 55, fixing plate; 56, electromagnet two. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 11 , the present invention provides the following technical solutions:

[0042] Embodiment 1: A portable liquid chromatograph comprises a housing 1 and a detection assembly installed in the housing 1 for detecting and analyzing samples, wherein the detection assembly comprises: a control panel 11, a solvent bottle 12, a connecting pipe 13, a mixing box 14, a liquid pump 15, an injector 16, a chromatographic column 17, a fixing seat 171, and a detector 18;

[0043] The side wall of the control panel 11 is fixedly installed on the front side of the casing 1. A placement groove is provided on the top of the casing 1, and two solvent bottles 12 are placed in the placement groove. A connecting pipe 13 is fixedly installed on each of the two solvent bottles 12, and one end of the two connecting pipes 13 is fixedly connected to a mixing box 14. The top of the mixing box 14 is fixedly installed on the top of the inner wall of the casing 1. The mixing box 14 is connected to a liquid pump 15 fixedly installed on the top of the inner wall of the casing 1. The liquid pump 15 is connected to an injector 16 penetrated on the casing 1, and the injector 16 is connected to a chromatographic column 17. The side wall of the chromatographic column 17 is detachably mounted on the bottom of the inner wall of the casing 1 through a fixing seat 171. The chromatographic column 17 is connected to a detector 18 fixedly installed on the bottom of the inner wall of the casing 1, and the water outlet of the detector 18 is connected to a water outlet pipe for discharging waste liquid.

[0044] When in use, the solvent bottle 12 is loaded with mobile phase, and the syringe after drawing the sample is prepared, and then the control panel 11 is used to control the liquid pump 15 to start, and the mobile phase in the solvent bottle 12 is drawn into the mixing box 14 by the liquid pump 15 with the help of the connecting tube 13, and mixed in the mixing box 14. The mixed mobile phase continues to be fed through the delivery tube under the action of the liquid pump 15, and the syringe with the sample drawn is injected into the injector 16 and mixed with the mobile phase, and flows into the chromatographic column 17 for separation under the influence of the mobile phase, and then flows into the detector 18. Different substances have different light absorption capabilities at different wavelengths. When the mobile phase with samples of different substances separated by the chromatographic column passes through the detector 18, it absorbs light energy and converts it into electrical signals and transmits it to the data center for reception. The electrical signals are converted into specific values ​​by the data center and displayed to the detection personnel for analysis and identification. At the same time, the waste liquid that has been tested is discharged from the detector.

[0045] Embodiment 2, the technical solution of this embodiment is different from that of embodiment 1, including: a carrying assembly for switching the working state of the housing 1 is installed in the housing 1, and the carrying assembly includes: a threaded rod 2, a support plate 21, an upper slider 22, an extrusion block 23, a guide column 24, a spring 1 25, a lower slider 26, a right guide plate 27, a guide rod 28, a spring 29, a right carrying box 210, a buckle 211, a positioning rod 212, a left guide plate 213, a left carrying box 214, a fixing block 215, a spring 3 216, and a left guide rod;

[0046] One end of the threaded rod 2 is threadedly penetrated in the casing 1 for switching the working state of the casing 1. A support plate 21 is threadedly penetrated on the side wall of the threaded rod 2. The top of the support plate 21 is fixedly installed on the top of the inner wall of the casing 1. One end of the threaded rod 2 is movably installed with an upper slider 22 through a bearing. A sliding rod is fixedly installed on the top of the upper slider 22. One end of the sliding rod is slidably penetrated on the top of the inner wall of the casing 1. One end of the upper slider 22 is tilted. One end of the extrusion block 23 slides against the tilted end of the upper slider 22 for auxiliary switching. In the working state of the casing 1, the side where the extrusion block 23 contacts the upper slider 22 is tilted, a guide column 24 is slidably arranged in the extrusion block 23, one end of the guide column 24 is fixedly installed on the top of the casing 1, a spring 25 is fixedly installed on the top of the extrusion block 23, and the other end of the spring 25 is fixedly installed on the top of the casing 1, the bottom of the extrusion block 23 slides against a lower slider 26, a right guide plate 27 is fixedly installed on the bottom of the lower slider 26, a guide rod 28 is slidably arranged in the right guide plate 27, and the guide rod The bottom of the guide rod 28 is fixedly mounted on the bottom of the inner wall of the housing 1, a spring 29 is fixedly mounted on the side wall of the guide rod 28, the other end of the spring 29 is fixedly mounted in the right guide plate 27, one end of the right guide plate 27 is fixedly mounted with a right carrying box 210, one end of the right carrying box 210 is slidably arranged in the housing 1, a mounting shaft is movably mounted in the right carrying box 210 through a bearing, a shoulder strap is wound on the mounting shaft, one end of the shoulder strap is fixedly mounted with a buckle 211, and a positioning rod 2 is fixedly mounted at the bottom of the upper slider 22 12. A left guide plate 213 is fixedly installed at one end of the positioning rod 212, a left carrying box 214 is fixedly installed at one end of the left guide plate 213, a spring three 216 is fixedly installed in the left carrying box 214, a fixing block 215 is fixedly installed at the other end of the spring three 216, one end of the fixing block 215 is slidably inserted into the left carrying box 214, a card slot adapted to the buckle 211 is provided in the left carrying box 214, and a left guide rod fixedly installed at the bottom of the inner wall of the casing 1 is slidably inserted in the left guide plate 213.

[0047] When in use, when it is necessary to carry the liquid chromatograph outdoors for detection operations, the threaded rod 2 is rotated to extend the threaded rod 2 into the housing 1, and the support plate 21 provides support force to the threaded rod 2, and the threaded rod 2 drives the upper slider 22 to move, and the upper slider 22 squeezes the squeezing block 23 to move, and the squeezing block 23 and the guide column 24 slide together, and the squeezing block 23 can move up and down in a straight line along the guide column 24, and the squeezing block 23 squeezes the lower slider 26 to move, so that the lower slider 26 drives the right guide plate 27 to move, and the right guide plate 27 and the guide rod 28 slide together, so that The right guide plate 27 can move linearly along the guide rod 28, so that the right guide plate 27 drives the right carrying box 210 to extend out of the housing, and at the same time, the upper slider 22 drives the positioning rod 212 to move, and the positioning rod 212 drives the left guide plate 213 to move, and the left guide plate 213 slides linearly along the left guide rod to drive the left carrying box 214 to extend out of the housing 1 synchronously, at this time, the buckle 211 is taken out of the right carrying box 210, and the buckle 211 is inserted into the left carrying box 214, and the entire liquid chromatograph can be carried by the shoulder strap connected to the buckle 211;

[0048] After completing the transfer of the liquid chromatograph, the threaded rod 2 is rotated in the opposite direction so that the threaded rod 2 is extended from the inside of the casing 1 to the outside of the casing 1 again. At this time, the upper slider 22 no longer applies a downward extrusion force to the extrusion block 23. The extrusion block 23 is reset to the initial position under the action of spring 1 25. The right carrying box 210 is also retracted into the casing 1 under the action of spring 29. At the same time, the left carrying box 214 is synchronously retracted into the casing 1 through the positioning rod 212, waiting to be used again when the liquid chromatograph is needed to be transferred next time.

[0049] Embodiment 3, the technical solution of this embodiment is different from that of embodiment 2 in that: a flip assembly for switching the space occupied by the housing 1 is further provided in the housing 1, and the flip assembly includes: a connecting rod 3, a wire 31, a positioning plate 32, a support column 33, a movable shaft 34, an extension rod 35, a fixing ring 36, a sleeve 37, a cover plate 38, and a latch 39;

[0050] One end of the connecting rod 3 is fixedly mounted on the side wall of the right guide plate 27, a wire 31 is fixedly mounted on the top of the connecting rod 3, a positioning plate 32 is fixedly mounted on one end of the wire 31, a support column 33 is fixedly mounted on the top of the positioning plate 32, a movable shaft 34 is fixedly installed in the support column 33, both ends of the movable shaft 34 are movably installed in the housing 1 through bearings, a fixing ring 36 is slidably installed in the support column 33, and the fixing ring 36 is fixedly sleeved on the side wall of the solvent bottle 12, and the connecting pipe 1 3, a cover plate 38 is fixedly mounted on the side wall of the cover plate 38, a sleeve 37 is abutted on the side wall of the sleeve 37 through a rubber pad, a plug sleeve is fixedly mounted on the side wall of the sleeve 37, a plug plate is fixedly mounted on the side wall of the cover plate 38, the plug sleeve and the plug plate are fixed by a plug pin 39, an extension rod 35 is fixedly mounted on the side wall of the connecting rod 3, and a group of iron wires 31, positioning plates 32, support columns 33, movable shafts 34, fixing rings 36, sleeves 37, cover plates 38 and plug pins 39 are also arranged at the extension rod 35.

[0051] When in use, when it is necessary to transfer the liquid chromatograph for carrying, the latch 39 is pulled out and the cover plate 38 is separated from the sleeve 37, and the fixing ring 36 is moved upward, so as to remove the solvent bottle 12 from the top of the casing 1 to prevent the solvent bottle 12 from falling from the casing 1 during the transfer of the liquid chromatograph. At this time, the threaded rod 2 is rotated, and the right carrying box 210 is extended from the casing 1. The right guide plate 27 will synchronously drive the connecting rod 3 to move to the side where the right carrying box 210 is located. At this time, the connecting rod 3 will no longer apply a pulling force to the iron wire 31 toward the side where the left carrying box 214 is located, and the iron wire 31 no longer provides a pulling force to the positioning plate 32 toward the side where the left carrying box 214 is located, so that the support column 33 cannot obtain a pulling force. At this time, the support column 33 is turned over with the movable shaft 34 as the axis by toggling the support column 33, so that the support column 33 can be tilted to the side where the solvent bottle 12 is located and finally fall into the placement groove opened at the top of the casing 1;

[0052] When the liquid chromatograph is transferred and placed, it is put into use again. With the retraction of the right carrying box 210, the support column 33 is flipped again with the movable shaft 34 as the axis and erected from the placement groove under the drive of the connecting rod 3 and the wire 31 until the outer wall of one side of the support column 33 abuts against the casing 1. The solvent bottle 12 is held and the fixing ring 36 is slid into the support column 33 and the solvent bottle 12 is placed in the placement groove. The cover plate 38 is then inserted into the sleeve 37 and sealed by the rubber pad installed on the cover plate 38. At the same time, the plug plate on the cover plate 38 is also inserted into the plug sleeve of the side wall of the sleeve 37. The pin 39 is then inserted into the plug plate to fix the connection, which is convenient for fixing the solvent bottle 12 without increasing the space volume required during the transfer of the liquid chromatograph, making it more convenient to carry.

[0053] Embodiment 4, the technical solution of this embodiment is different from that of embodiment 3, including: an adjusting component for switching the amount of space occupied by the housing 1 is installed in the housing 1, and the adjusting component includes: a driving rod 4, a rack 41, a gear 42, a rotating shaft 43, a sliding sleeve 44, a sliding table 45, a water receiving box 46, and a rubber curtain 47;

[0054] One end of the driving rod 4 is fixedly mounted on the side wall of the positioning rod 212, and a rack 41 is fixedly mounted on one end of the driving rod 4. A gear 42 is meshed with the rack 41, and the gear 42 is a half gear. A rotating shaft 43 is fixedly passed through the gear 42. Both ends of the rotating shaft 43 are movably mounted in the casing 1 through bearings. A sliding sleeve 44 is fixedly passed through the rotating shaft 43, and a sliding table 45 is slidably passed through the sliding sleeve 44. A water receiving box 46 is fixedly mounted on one end of the sliding table 45, and a row of rubber curtains 47 are fixedly mounted in the casing 1.

[0055] During use, when the liquid chromatograph needs to be transferred and carried, the waste liquid in the water receiving box 46 is poured out and cleaned, and the water receiving box 46 can be carried together with the disassembled solvent bottle 12, or the water receiving box 46 can be installed back on the sliding sleeve 44. At this time, when the threaded rod 2 is rotated to adjust the position of the left and right carrying boxes 210, the positioning rod 212 will synchronously drive the driving rod 4 to move, and the driving rod 4 drives the rack 41 to move, the rack 41 drives the gear 42 to rotate, the gear 42 drives the rotating shaft 43 to rotate, the rotating shaft 43 drives the sliding sleeve 44 to rotate, the sliding sleeve 44 drives the slide 45 to rotate, and the slide 45 drives the water receiving box 46 to rotate, so that the water receiving box 46 passes through the rubber curtain 47 and enters the casing 1;

[0056] When the liquid chromatograph is transferred and placed, it is put into use again. With the retraction of the right carrying box 210, under the action of the driving rod 4, the sliding sleeve 44, the sliding table 45 and the water receiving box 46 can be turned over with the rotating shaft 43 as the axis so that the water receiving box 46 is reset to the initial state again, which makes it easy to disassemble and clean the water receiving box 46 without increasing the space volume required during the transfer of the liquid chromatograph, making it more convenient to carry.

[0057] In another embodiment, a replacement assembly for switching the chromatographic column 17 is also provided in the housing 1, and the replacement assembly includes: a magnet 1 5, an electromagnet 1 51, a support rod 52, a sliding rod, a magnet 2 53, a fixing rod 54, a fixing plate 55, and an electromagnet 2 56;

[0058] The chromatographic column 17 is no longer detachably mounted on the bottom of the inner wall of the casing 1 through the fixing seat 171. A support rod 52 is fixedly mounted on the bottom of the inner wall of the casing 1, an electromagnet 1 51 is fixedly mounted on the top of the support rod 52, a sliding rod is fixedly mounted on the side wall of the electromagnet 1 51, a magnet 1 5 is slidably passed through the sliding rod, a fixing rod 54 is fixedly mounted on the side wall of the chromatographic column 17, one end of the fixing rod 54 is slidably passed through a fixing plate 55 fixedly mounted on the bottom of the inner wall of the casing 1, a magnet 2 53 is fixedly mounted on the fixing rod 54, an electromagnet 2 56 is fixedly mounted on the side wall of the fixing plate 55, and two chromatographic columns 17 are fixedly connected in series on the fixing rod 54;

[0059] The number of magnet 5 , electromagnet 51 , support rod 52 , and sliding rod is two groups, and the two groups of magnet 5 , electromagnet 51 , support rod 52 , and sliding rod are symmetrically distributed at both ends of the chromatographic column 17 .

[0060] During use, when carrying the liquid chromatograph outdoors for detection and analysis operations, after completing the detection of a sample, the control panel 11 is used to control the electromagnet 1 51 to start the magnetic attraction with the magnet 1 5, so that the magnet 1 5 drives the delivery tube to move, so that the delivery tube is removed from the chromatographic column 17, and then the control panel 11 controls the electromagnet 2 56 to start the magnetic attraction with the magnet 2 53, and the fixed rod 54 and the fixed plate 55 slide together, so that the magnet 2 53 drives the chromatographic column 17 to be replaced, so that another unused chromatographic column 17 is switched to the detection position, and the control panel 11 controls the electromagnet 1 51 to start the magnetic repulsion with the magnet 1 5, so that the magnet 5 drives the delivery tube to be inserted into the chromatographic column 17 again, and the unused chromatographic column 17 is connected to the pipeline, and the next sample can be detected. The number of chromatographic columns 17 connected in series on the fixed rod 54 can also be increased without affecting other parts in the casing 1, thereby further increasing the number of samples that can be detected by replacing the chromatographic column 17 once.

[0061] The embodiment of the present invention also provides a method for using a portable liquid chromatograph, comprising the following steps:

[0062] S1, driving the carrying assembly to operate by rotating the threaded rod 2 in the carrying assembly, and switching the working state of the housing 1;

[0063] S2, in the process of switching the working state of the housing 1, adjusting the occupied space of the housing 1 by synchronously operating the adjustment component;

[0064] S3, carrying the housing 1 after switching the working state to an outdoor testing point by means of a carrying component;

[0065] S4, the housing 1 provides support and protection for the detection assembly, and the various parts of the detection assembly cooperate with each other to perform detection and analysis operations;

[0066] S5. After the detection and analysis operation is completed, the working state of the housing 1 is switched again by the carrying component and the housing 1 is carried back to the laboratory.

[0067] The moving distance of the threaded rod 2 is between 5 and 10 cm.

[0068] The housing 1 has a length of 350 mm, a width of 250 mm and a height of 300 mm.

[0069] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0070] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable liquid chromatograph, comprising a housing (1) and a detection component installed in the housing (1) for detecting and analyzing a sample, characterized in that: A carrying component for switching the working state of the casing (1) and an adjusting component for switching the amount of space occupied by the casing (1) are installed in the casing (1), and the carrying component includes: A threaded rod (2) is threadedly inserted into the casing (1) and is used to switch the working state of the casing (1); a support plate (21) is threadedly inserted into the threaded rod (2); the top of the support plate (21) is fixed to the top of the inner wall of the casing (1); an upper slider (22) is movably mounted on one end of the threaded rod (2); and one end of the upper slider (22) is inclined; An extrusion block (23) is slidably abutted against an inclined end of the upper slider (22) for assisting in switching the working state of the casing (1); a guide column (24) is slidably penetrated in the extrusion block (23); one end of the guide column (24) is fixed to the top of the casing (1); a spring (25) is fixed to the top of the extrusion block (23); the other end of the spring (25) is fixed to the top of the casing (1); The bottom of the extrusion block (23) is slidably abutted against a lower slider (26), a right guide plate (27) is fixed to the bottom of the lower slider (26), a guide rod (28) is slidably penetrated in the right guide plate (27), the bottom of the guide rod (28) is fixed to the bottom of the inner wall of the housing (1), a second spring (29) is fixed on the side wall of the guide rod (28), the other end of the second spring (29) is fixed in the right guide plate (27), a right carrying box (210) is fixed to one end of the right guide plate (27), one end of the right carrying box (210) is slidably penetrated in the housing (1), and a buckle (211) is installed in the right carrying box (210); A positioning rod (212) is fixed to the bottom of the upper slider (22), a left guide plate (213) is fixed to one end of the positioning rod (212), a left carrying box (214) is fixed to one end of the left guide plate (213), a spring three (216) is fixed in the left carrying box (214), a fixing block (215) is fixed to the other end of the spring three (216), one end of the fixing block (215) is slidably inserted into the left carrying box (214), and a left guide rod fixed in the housing (1) is slidably inserted into the left guide plate (213).

2. A portable liquid chromatograph according to claim 1, characterized in that: The adjustment assembly comprises a driving rod (4) fixed on the side wall of the positioning rod (212); a rack (41) is fixed to one end of the driving rod (4); a gear (42) is meshed with the rack (41); the gear (42) is a half gear; a rotating shaft (43) is fixedly passed through the gear (42); both ends of the rotating shaft (43) are movably mounted in the casing (1); a sliding sleeve (44) is fixedly passed through the rotating shaft (43); a sliding platform (45) is slidably passed through the sliding sleeve (44); a water receiving box (46) is fixed to one end of the sliding platform (45); and a rubber curtain (47) is fixed in the casing (1).

3. A portable liquid chromatograph according to claim 1, characterized in that: The housing (1) is also provided with a flip assembly for switching the amount of space occupied by the housing (1), the flip assembly comprising a connecting rod (3) fixed to the side wall of the right guide plate (27), an extension rod (35) fixed to the side wall of the connecting rod (3), an iron wire (31) fixed to the top of the connecting rod (3), a positioning plate (32) fixed to one end of the iron wire (31), a support column (33) fixed to the top of the positioning plate (32), a movable shaft (34) fixedly inserted into the support column (33), both ends of the movable shaft (34) movably mounted in the housing (1), and a fixing ring (36) slidably inserted into the support column (33).

4. A portable liquid chromatograph according to claim 3, characterized in that: The detection assembly comprises a control panel (11) fixed to the front of the housing (1); a placement groove is provided on the top of the housing (1); a solvent bottle (12) is placed in the placement groove; the fixing ring (36) is sleeved on the solvent bottle (12); a connecting pipe (13) is fixed to the solvent bottle (12); a cover plate (38) is fixed to the connecting pipe (13); a sleeve (37) is abutted against the side wall of the cover plate (38) via a rubber pad; and a sleeve (37) is provided on the side wall of the sleeve (37). A plug sleeve is fixed thereon, a plug plate is fixed on the side wall of the cover plate (38), the plug sleeve and the plug plate are fixed by a latch (39), the connecting pipe (13) is connected to a mixing box (14) fixed to the top of the inner wall of the casing (1), the mixing box (14) is connected to a liquid pump (15) fixed to the top of the inner wall of the casing (1), the liquid pump (15) is connected to an injector (16) penetrating the casing (1), and the injector (16) is connected to a chromatographic column (17).

5. A portable liquid chromatograph according to claim 4, characterized in that: The side wall of the chromatographic column (17) is detachably mounted on the bottom of the inner wall of the casing (1) via a fixing seat (171), and the chromatographic column (17) is connected to a detector (18) fixed to the bottom of the inner wall of the casing (1).

6. A portable liquid chromatograph according to claim 4, characterized in that: A support rod (52) is fixed to the bottom of the inner wall of the casing (1), an electromagnet 1 (51) is fixed to the top of the support rod (52), a sliding rod is fixed to the side wall of the electromagnet 1 (51), a magnet 1 (5) is slidably penetrated through the sliding rod, a fixing rod (54) is fixed to the side wall of the chromatographic column (17), one end of the fixing rod (54) is slidably penetrated through a fixing plate (55) fixed to the bottom of the inner wall of the casing (1), a magnet 2 (53) is fixed to the fixing rod (54), and an electromagnet 2 (56) is fixed to the side wall of the fixing plate (55).

7. A method for using a portable liquid chromatograph according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, driving the carrying assembly to operate by rotating the threaded rod (2) in the carrying assembly, thereby switching the working state of the housing (1); S2, during the process of switching the working state of the housing (1), adjusting the occupied space of the housing (1) by synchronously operating the adjustment component; S3, carrying the housing (1) after switching the working state to an outdoor testing point by means of a carrying component; S4, the housing (1) provides support and protection for the detection component, and the various parts of the detection component cooperate with each other to perform detection and analysis operations; S5. After the detection and analysis work is completed, the working state of the housing (1) is switched again by the carrying component, and the housing (1) is carried back to the laboratory.

8. The method for using a portable liquid chromatograph according to claim 7, characterized in that: The moving distance of the threaded rod (2) is between 5 and 10 cm.

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