Leacheate preparation device and preparation method suitable for ion chromatograph

Abstract

The invention discloses a leacheate preparation device suitable for an ion chromatograph and a preparation method, and relates to the technical field of leacheate preparation, the preparation device comprises a preparation barrel, the top of the preparation barrel is buckled with a top plate, and the top plate is provided with a plurality of liquid injection pipes; a rotating shaft is rotationally arranged in the preparation barrel; a circular turntable is arranged in the preparation barrel and is fixedly connected with the rotating shaft, and the periphery of the circular turntable is in sliding sealing connection with the inner side wall of the preparation barrel; an enclosing mechanism is arranged on the top wall of the circular turntable, the top plate, the enclosing mechanism and the circular turntable enclose to form a mixing chamber for mixing leacheate, and any liquid injection pipe is communicated with the mixing chamber. And the top plate, the enclosure mechanism and the circular turntable enclose to form a mixing chamber for mixing leacheate. The volume of the mixing chamber is continuously enlarged, so that the solution can be subjected to different degrees of stirring force at different positions. And when the solution is expanded, the solution moves outwards, so that the solution originally positioned in the central area is better mixed with the peripheral solution, and the mixing uniformity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of eluent preparation, and in particular to an eluent preparer and a preparation method suitable for an ion chromatograph. Background Art

[0002] Ion chromatograph uses high performance liquid chromatography technology to detect and analyze anions and cations in solutions. Eluent plays a vital role in ion chromatograph, and its main role can be explained from the following aspects: 1. Eluent is usually used to dilute or elute the sample to separate the target ions in the sample. For example, when analyzing sulfate, nitric acid eluent is often used to clean the sample to ensure the correct analysis results; 2. The eluent can adjust the solution concentration and pH value, so that the ion chromatograph remains stable during the analysis process to obtain more accurate analysis results; It not only helps in sample pretreatment and solution adjustment, but also keeps the instrument clean and the components in normal operation. Therefore, in ion chromatography analysis, the correct selection and use of eluent is crucial. At the same time, attention should also be paid to the preparation and maintenance of the eluent to ensure the accuracy and repeatability of the analysis results.

[0003] The preparation method of eluent is generally as follows: 1. Take a certain amount of various liquids and mix them in a certain proportion to get the required eluent; 2. In the process of preparing the eluent, the laboratory equipment must be kept clean and hygienic to avoid contamination by impurities. In particular, the sanitation of ion exchange pure water must be paid special attention to; 3. The prepared eluent needs to be fully mixed to ensure its uniformity; 4. Strictly abide by laboratory safety regulations during operation and wear laboratory clothes and other protective measures; 5. The used eluent needs to be cleaned and properly stored.

[0004] The eluent dispenser in the prior art has the following problems: 1. Uneven mixing: In the process of mixing different reagents to form eluent, uneven mixing may occur. This will lead to unstable properties of the eluent and affect the repeatability and reliability of the analysis.

[0005] 2. Inconvenient to clean the internal space: If the eluent contains some chemical substances that are difficult to dissolve or react with the material of the dispenser, it may be troublesome to clean. These residues may require the use of specific solvents or cleaning methods to remove, otherwise it will affect the next use of the dispenser and thus affect the preparation quality of the eluent.

[0006] Therefore, an eluent dispenser and a preparation method suitable for an ion chromatograph are proposed. Summary of the invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an eluent dispenser and a dispense method suitable for an ion chromatograph.

[0008] In a first aspect, the present application provides an eluent dispenser suitable for an ion chromatograph, which is implemented by the following technical solutions: A eluent preparer suitable for an ion chromatograph comprises a preparation barrel of a cylindrical structure, a top plate being buckled on the top of the preparation barrel, and a plurality of injection tubes being arranged on the top plate; a rotating shaft being rotatably arranged in the preparation barrel, and a central axis of the rotating shaft being colinear with the central axis of the preparation barrel; a circular turntable being arranged in the preparation barrel below the top plate, the circular turntable being fixedly connected to the rotating shaft, and a peripheral edge of the circular turntable being slidingly and sealingly connected to an inner side wall of the preparation barrel; a liquid discharge device being further arranged below the circular turntable; an enclosure mechanism expandable under the action of centrifugal force being arranged on the top wall of the circular turntable, the top plate, the enclosure mechanism and the circular turntable forming a mixing chamber for mixing eluent, and any of the injection tubes being connected to the mixing chamber.

[0009] Furthermore, in the present invention, a plurality of slide grooves are arranged in a circular array on the circular turntable, and any of the slide grooves has a front end and a rear end, the rear end is close to the center of the circular turntable, and the front end is close to the periphery of the circular turntable; any of the slide grooves extends radially along the circular turntable, and the length of any of the slide grooves is less than the radius of the circular turntable; the enclosing mechanism is slidingly and sealingly connected to a plurality of the slide grooves; the liquid in the mixing chamber can flow into the discharge device through any of the slide grooves.

[0010] Furthermore, in the present invention, the above-mentioned enclosing mechanism includes a plurality of slide bars and a plurality of arc-shaped side plates, and the plurality of slide bars are respectively and one-to-one correspondingly slidably and sealingly connected with the plurality of slide grooves, and any of the above-mentioned slide bars slides radially along the above-mentioned circular turntable, and the length of any of the above-mentioned slide bars is less than the length of the above-mentioned slide groove; any of the above-mentioned slide bars has a head end and a tail end, and any of the above-mentioned tail end and the corresponding above-mentioned rear end are connected by a reset mechanism; any of the above-mentioned head end is provided with a first column; one end of any of the above-mentioned arc-shaped side plates is connected to the above-mentioned first column by a torsion spring, and the other end thereof abuts against the adjacent above-mentioned arc-shaped side plate, and the plurality of the above-mentioned arc-shaped side plates enclose the side of the above-mentioned mixing chamber; when the volume of the above-mentioned mixing chamber becomes larger, the two adjacent above-mentioned arc-shaped side plates are always in an abutting state.

[0011] Furthermore, in the present invention, any of the above-mentioned arcuate side plates has an outer side wall and an inner side wall, and a plurality of the above-mentioned inner side walls constitute the inner side wall of the above-mentioned mixing chamber; and the outer side wall of any of the above-mentioned arcuate side plates abuts against the inner side wall of an adjacent arcuate side plate.

[0012] Furthermore, in the present invention, a push block is provided on any of the above-mentioned outer walls, and the projection length of the push block in the radial direction of the above-mentioned circular turntable is greater than the distance between the end face of the above-mentioned front end and the periphery of the above-mentioned circular turntable; a protrusion is provided on any of the above-mentioned head ends, and the above-mentioned protrusion is located in the above-mentioned slide groove, and the above-mentioned protrusion protrudes out of the above-mentioned head end.

[0013] Furthermore, in the present invention, the top wall of the circular turntable and the bottom wall of the top plate are parallel to each other; the height of any of the arc-shaped side plates is equal to the distance between the top wall of the circular turntable and the bottom wall of the top plate.

[0014] Furthermore, in the present invention, any of the above-mentioned reset mechanisms includes a guide rod slidably connected to the above-mentioned slide bar and a reset spring arranged at the head end of the above-mentioned guide rod, and the end of the above-mentioned guide rod away from its own head end is connected to the above-mentioned rear end; the end of the above-mentioned reset spring away from the above-mentioned guide rod is connected to the above-mentioned head end, and the central axis of the above-mentioned guide rod and the telescopic direction of the above-mentioned reset spring are parallel to the sliding direction of the above-mentioned slide bar.

[0015] Furthermore, in the present invention, a plurality of installation cavities are arranged in a circular array around the central axis of the circular turntable in the middle part, and a sealing mechanism is arranged in any of the installation cavities, and the plurality of the sealing mechanisms correspond one-to-one to the plurality of the slide grooves; any of the sealing mechanisms comprises a fixed shaft arranged in the installation cavity and a torsion spring and a sealing belt both wound around the fixed shaft, one end of the sealing belt is connected to the torsion spring, and the other end thereof is connected to the tail end; the width of the sealing belt is greater than or equal to the width of the slide groove; when the circular turntable does not rotate, the tail end abuts against the rear end, and the sealing belt is tightened and wound around the fixed shaft.

[0016] Furthermore, in the present invention, the above-mentioned rotating shaft is a hollow shaft; a second column is provided at any of the above-mentioned tail ends, and an inner plate is rotatably connected to any of the above-mentioned second columns; one end of any of the above-mentioned inner plates is connected to the above-mentioned second column through a torsion spring, and the other end thereof abuts against the adjacent above-mentioned inner plate; a plurality of the above-mentioned inner plates enclose an isolation chamber, and the top end of the above-mentioned rotating shaft is located in the above-mentioned isolation chamber; the annular area between a plurality of the above-mentioned inner plates and a plurality of the above-mentioned arc-shaped side plates forms the above-mentioned mixing chamber; the height of any of the above-mentioned inner plates is equal to the distance between the top wall of the above-mentioned circular turntable and the bottom wall of the above-mentioned top plate; when the volume of the above-mentioned mixing chamber becomes larger, the two adjacent above-mentioned inner plates are always in an abutting state; when high-pressure cleaning fluid is injected into the above-mentioned isolation chamber, the above-mentioned inner plate is separated from the adjacent inner plates.

[0017] Furthermore, in the present invention, any of the above-mentioned liquid injection pipes is communicated with the above-mentioned mixing chamber.

[0018] In a second aspect, the present application provides a method for preparing an eluent by the following steps: S1. When preparing the eluent, firstly inject various reagents into the annular area (the annular area is the mixing chamber 601) between the inner plates 1402 and the arc-shaped side plates 802 through the injection tubes 301; S2, start the motor to control the rotation shaft 401 to rotate, so that the circular turntable 501 rotates; the mixed liquid in the mixing chamber 601 is gradually mixed under the action of centrifugal force; the circular turntable 501 needs to rotate at a low speed in the initial stage of mixing to prevent each slide bar 801 from gradually moving toward the front end 7011 of the slide groove 701 under the action of centrifugal force in the initial stage of mixing; S3, after the eluent is mixed in the mixing chamber 601, the rotation speed of the circular turntable 501 is increased so that each slide bar 801 moves toward the front end 7011 of the slide groove 701 under the action of centrifugal force; S4. When the head end of each slide bar 801 moves to the front end 7011 of the corresponding slide groove 701, the push block 901 first abuts against the inner side wall of the preparation barrel 101. As the rotation speed of the circular turntable 501 increases, the centrifugal force on each slide bar 801 also increases. This centrifugal force acts on each slide bar 801, so that each slide bar 801 always has a tendency to move toward the front end 7011 of the corresponding slide groove 701; as the centrifugal force increases, the inner side wall of the preparation barrel 101 will exert a reaction force on the push block 901, and this reaction force causes each push block 901 to move a certain distance toward the center of the circular turntable 501. At this time, the connection between the two adjacent arc-shaped side plates 802 is opened, and the eluent in the mixing chamber 601 can flow through this connection to the annular area between the mixing chamber 601 and the preparation barrel 101; S5. When the end of the protrusion 1001 away from the slide bar 801 abuts against the front end 7011 of the slide groove 701, the push block 901 and the slide bar 801 no longer move. At this time, there is a gap between the head end of each slide bar 801 and the front end 7011 of the corresponding slide groove 701. The eluent flowing to the annular area between the mixing chamber 601 and the preparation barrel 101 can flow through this gap to the bottom plate 1601 below, and then be discharged through the drain pipe 1602.

[0019] The beneficial effects of the present invention are: 1. By installing an enclosure mechanism that can expand under the action of centrifugal force on the top wall of the circular turntable, the top plate, the enclosure mechanism and the circular turntable form a mixing chamber for mixing the eluent. The continuous expansion of the volume of the mixing chamber can make the solution receive different degrees of stirring force at different positions. When expanding, the solution moves outward, which makes the solution originally in the center area better mixed with the peripheral solution, thereby improving the uniformity of mixing.

[0020] 2. During cleaning, the diversified flushing paths and dynamic flushing effects can make the cleaning liquid more fully contact various parts inside the dispenser, reduce the flushing dead angle, and thus improve the flushing efficiency. Compared with the existing technology, the residual solution and impurities in the dispenser can be cleaned more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view of Figure 3 It is a structural schematic diagram of the enclosing mechanism of an embodiment of the present invention; Figure 4 for Figure 2 A partial enlarged view of the middle A; Figure 5 Schematic diagram of the structure of a circular turntable according to an embodiment of the present invention.

[0022] In the figure: 101-preparation barrel; 201-top plate; 301-liquid injection pipe; 401-rotating shaft; 501-circular turntable; 601-mixing chamber; 701-chute; 7011-front end; 7012-rear end; 801-slide; 802-arc-shaped side plate; 803-first column; 901-push block; 1001-bump; 1101-guide rod; 1102-reset spring; 1201-installation cavity; 1301-fixed shaft; 1302-sealing belt; 1401-second column; 1402-inner plate; 1501-isolation chamber; 1601-bottom plate; 1602-drain pipe; 1701-exhaust pipe. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5 , the present invention provides a technical solution: A eluent dispenser suitable for an ion chromatograph comprises a preparation barrel 101 of a cylindrical structure, and a top plate 201 is buckled on the top of the preparation barrel 101. A rotating shaft 401 is rotatably arranged in the preparation barrel 101, and the central axis of the rotating shaft 401 is colinear with the central axis of the preparation barrel 101; a circular turntable 501 is arranged below the top plate 201 in the preparation barrel 101, and the circular turntable 501 is fixedly connected to the rotating shaft 401, and the periphery of the circular turntable 501 is slidably sealed and connected to the inner side wall of the preparation barrel 101; the top wall of the circular turntable 501 is provided with an enclosure mechanism that can expand under the action of centrifugal force, and the top plate 201, the enclosure mechanism and the circular turntable 501 enclose a mixing chamber 601 for mixing eluent. In order to facilitate the injection of different types of reagents into the mixing chamber 601 , a plurality of injection tubes 301 are installed on the top plate 201 , and any injection tube 301 is connected to the mixing chamber 601 .

[0025] The reagents injected into the mixing chamber 601 are fully mixed to form a wash solution, which needs to be discharged after mixing. Figure 2 In order to facilitate the discharge of the eluent, a bottom plate 1601 and a drain pipe 1602 are installed below the circular turntable 501, the rotating shaft 401 is rotatably connected to the bottom plate 1601, and one end of the drain pipe 1602 extends between the bottom plate 1601 and the circular turntable 501. In this way, the eluent can be discharged through the drain pipe 1602 after falling onto the bottom plate 1601 through the circular turntable 501. At the same time, in order to quickly discharge the eluent, the top surface of the bottom plate 1601 is designed as an inclined surface, the lowest point of the inclined surface is located in the middle of the bottom plate 1601, and the port of the drain pipe 1602 extending between the bottom plate 1601 and the circular turntable 501 is located at the lowest point of the inclined surface, so that the eluent can be quickly discharged.

[0026] If the eluent contains organic solvents, such as methanol, acetonitrile, etc., these solvents are usually volatile. During preparation and use, bubbles are easily formed, affecting the analysis results. Therefore, the solution containing organic solvents needs to be exhausted. In order to solve this problem, an exhaust pipe 1701 is installed on the top plate 201, and the exhaust pipe 1701 is connected to the mixing chamber 601.

[0027] Reference Figure 2 , Figure 3 and Figure 5 In order to facilitate the prepared eluent to flow onto the bottom plate 1601, a plurality of chutes 701 are arranged in a circular array on the circular turntable 501, and any chute 701 has a front end 7011 and a rear end 7012, the rear end 7012 is close to the center of the circular turntable 501, and the front end 7011 is close to the periphery of the circular turntable 501; any chute 701 extends radially along the circular turntable 501, and the length of any chute 701 is less than the radius of the circular turntable 501, and the liquid in the mixing chamber 601 can flow into the discharge device through any chute 701.

[0028] Reference Figure 2 and Figure 3 The enclosing mechanism specifically includes a plurality of slide bars 801 and a plurality of arc-shaped side plates 802, wherein the plurality of slide bars 801 are respectively and one-to-one correspondingly connected in sliding and sealing manner with the plurality of slide grooves 701, and any slide bar 801 slides radially along the circular turntable 501, and the length of any slide bar 801 is less than the length of the slide groove 701; any slide bar 801 has a head end and a tail end, and the tail end of any slide bar 801 and the rear end 7012 of the corresponding slide groove 701 are connected by a reset mechanism; a first column 803 is installed at the head end of any slide bar 801, and the first column 803 extends into the area between the circular turntable 501 and the top plate 201; one end of any arc-shaped side plate 802 is connected to the first column 803 by a torsion spring (not shown in the figure), and the other end thereof abuts against the adjacent arc-shaped side plate 802, and a plurality of arc-shaped side plates 802 enclose the side of the mixing chamber 601. Any arcuate side plate 802 has an outer wall and an inner wall, and the inner wall of each arcuate side plate 802 constitutes the inner wall of the mixing chamber 601; the outer wall of any arcuate side plate 802 abuts against the inner wall of the adjacent arcuate side plate 802 under the elastic force of the torsion spring.

[0029] Reference Figure 2 In this embodiment, the rotation of the rotating shaft 401 is controlled by a motor and a gear mechanism.

[0030] from Figure 3 It can be seen that the installation method of the enclosure mechanism is such that when the rotating shaft 401 is driven by the motor to rotate, the rotating shaft 401 drives the circular turntable 501 to rotate. When the rotation speed of the circular turntable 501 gradually increases, each slide bar 801 will gradually move toward the front end 7011 of the slide groove 701 under the action of centrifugal force, and the two adjacent arc-shaped side plates 802 are in a sliding connection state during this process. At the same time, the volume of the mixing chamber 601 will increase during this process, but the two adjacent arc-shaped side plates 802 are always in abutment, and the eluent in the mixing chamber 601 cannot flow out through the connection between the two adjacent arc-shaped side plates 802.

[0031] In the process of mixing various reagents in the mixing chamber 601 to form the eluent, the rotation speed of the circular turntable 501 needs to be controlled to prevent each slide bar 801 from gradually moving toward the front end 7011 of the chute 701 under the action of centrifugal force in the initial mixing stage. After the eluent is mixed in the mixing chamber 601, the rotation speed of the circular turntable 501 needs to be increased to allow each slide bar 801 to move toward the front end 7011 of the chute 701 under the action of centrifugal force.

[0032] When the head end of each slide bar 801 abuts against the front end 7011 of the corresponding chute 701, at this time, firstly, the connection between the two adjacent arc-shaped side plates 802 needs to be opened, and secondly, there needs to be a gap between the head end of each slide bar 801 and the front end 7011 of the corresponding chute 701, so that the eluent in the mixing chamber 601 can flow to the bottom plate 1601 below through the connection between the two adjacent arc-shaped side plates 802 and the chute 701 in sequence. Therefore, in order to solve this problem, a push block 901 is installed on the outer side wall of any arc-shaped side plate 802, and the projection length of the push block 901 in the radial direction of the circular turntable 501 is greater than the distance between the end face of the front end 7011 of the chute 701 and the periphery of the circular turntable 501. A protrusion 1001 is installed at the head end of any slide bar 801. The protrusion 1001 is always located in the slide groove 701 and protrudes from the head end of the slide bar 801. The length of the protrusion 1001 protruding from the head end of the slide bar 801 is less than the projection length of the push block 901 in the radial direction of the circular turntable 501.

[0033] Thus, when the head end of each slide bar 801 moves to the front end 7011 of the corresponding chute 701, the push block 901 first contacts the inner side wall of the preparation barrel 101. As the rotation speed of the circular turntable 501 increases, the centrifugal force on each slide bar 801 also increases. This centrifugal force acts on each slide bar 801, so that each slide bar 801 always has a tendency to move toward the front end 7011 of the corresponding chute 701. As the centrifugal force increases, the inner side wall of the preparation barrel 101 exerts a reaction force on the push bar, and this reaction force causes each push block 901 to move a certain distance toward the center of the circular turntable 501. At this time, the connection between the two adjacent arc-shaped side plates 802 is opened, and the eluent in the mixing chamber 601 can flow to the annular area between the mixing chamber 601 and the preparation barrel 101 through this connection. When the end of the protrusion 1001 away from the slide bar 801 abuts against the front end 7011 of the slide groove 701, the push block 901 will no longer move. At this time, there is a gap between the head end of each slide bar 801 and the front end 7011 of the corresponding slide groove 701. The washing liquid flowing to the annular area between the mixing chamber 601 and the preparation barrel 101 can flow through this gap to the bottom plate 1601 below.

[0034] During the mixing process of various reagents in the mixing chamber 601, if there is a gap between the top surface of the arc-shaped side plate 802 and the bottom surface of the top plate 201, it may cause the "unprepared eluent" to splash into the annular area between the mixing chamber 601 and the preparation barrel 101 through the gap between the top surface of the arc-shaped side plate 802 and the bottom surface of the top plate 201. Therefore, in order to solve this problem, the top wall of the circular turntable 501 and the bottom wall of the top plate 201 are parallel to each other during installation; the height of any arc-shaped side plate 802 is equal to the distance between the top wall of the circular turntable 501 and the bottom wall of the top plate 201, or a sealing strip is installed on the top of any arc-shaped side plate 802 to solve the above problem.

[0035] Reference Figure 2 and Figure 4 , when the eluent is not prepared, the tail end of each slide bar 801 needs to be in contact with the rear end 7012 of the corresponding slide groove 701. In order to solve this problem, the arbitrary reset mechanism includes a guide rod 1101 slidably connected to the slide bar 801 and a reset spring 1102 installed at the head end of the guide rod 1101, and the end of the guide rod 1101 away from its head end is connected to the rear end 7012 of the corresponding slide groove 701; the end of the reset spring 1102 away from the guide rod 1101 is connected to the head end of the corresponding slide bar 801, and the central axis of the guide rod 1101 and the telescopic direction of the reset spring 1102 are parallel to the sliding direction of the slide bar 801.

[0036] Reference Figure 2 and Figure 4 During the mixing process, if each slide bar 801 moves toward the front end 7011 of the chute 701 under the action of centrifugal force, there will be a gap between the tail end of the slide bar 801 and the rear end 7012 of the corresponding chute 701. This may cause the unprepared eluent to flow into the chute 701 through this gap. Therefore, in order to solve this problem, a plurality of mounting cavities 1201 are arranged in a circular array around the central axis of the circular turntable 501 in the middle part, and a sealing mechanism is installed in any mounting cavity 1201, and the plurality of sealing mechanisms correspond to the plurality of chute 701 one by one. Specifically, any sealing mechanism includes a fixed shaft 1301 installed in the mounting cavity 1201, a torsion spring (not shown in the figure) and a sealing belt 1302 both wound around the fixed shaft 1301, one end of the sealing belt 1302 is connected to the torsion spring, and the other end is connected to the tail end; the width of the sealing belt 1302 is greater than or equal to the width of the chute 701. The connection and installation method of the sealing belt 1302 and the torsion spring are the same as the installation method of the core structure (scale and spring) of the tape measure in the prior art, and will not be described in detail here.

[0037] In this embodiment, the width of the sealing belt 1302 is equal to the width of the chute 701. If the width of the sealing belt 1302 is greater than the width of the chute 701, grooves for the sealing belt 1302 to pass through should be provided on two mutually symmetrical side walls of the chute 701.

[0038] With the above structural design, when each slide bar 801 moves toward the front end 7011 of the chute 701 under the action of centrifugal force, the sealing belt 1302 can block the gap between the rear end of the slide bar 801 and the rear end 7012 of the corresponding chute 701, thereby preventing the unprepared eluent from flowing into the chute 701 through the gap. When the circular turntable 501 does not rotate, the sealing belt 1302 is tightened and wound around the fixed shaft 1301 under the action of the torsion spring.

[0039] After each use of the dispenser, its internal space needs to be cleaned to ensure the cleanliness inside, so as not to affect the next preparation. Therefore, in order to solve this problem, the rotating shaft 401 is designed as a hollow shaft, and the bottom end of the rotating shaft 401 is rotatably connected with a water pipe, and the water pipe is externally connected to a water pump, and the top opening of the rotating shaft 401 is located in the mixing chamber 601. In this way, when the mixing chamber 601 needs to be cleaned, the rotating shaft 401 rotates to drive the circular turntable 501 to rotate, and the water pump injects the high-pressure cleaning liquid into the mixing chamber 601. Then the rotation speed of the rotating shaft 401 is gradually increased, and the change state of the enclosing mechanism under the action of centrifugal force is the same as the change state when the eluent is prepared. In this way, the flow direction of the high-pressure cleaning liquid after staying in the mixing chamber 601 for a period of time is: the connection between the two adjacent arc-shaped side plates 802 → the annular area between the mixing chamber 601 and the preparation barrel 101 → the chute 701 → the bottom plate 1601 → the discharge pipe 1602, and the purpose of cleaning the inside of the dispenser can be achieved.

[0040] However, the above structure still has the following problems when used: the eluent in the mixing chamber 601 can easily enter the interior through the top opening of the rotating shaft 401, resulting in waste of eluent; at the same time, if the water pipe is blocked, the cleaning work will be affected. Figure 2 and Figure 3 , a second column 1401 is installed at the tail end of any slide bar 801, and an inner plate 1402 is rotatably connected to any second column 1401; one end of any inner plate 1402 is connected to the second column 1401 through a torsion spring (not shown in the figure), and the other end thereof abuts against the adjacent inner plate 1402; a plurality of inner plates 1402 enclose an isolation chamber 1501, and the top end of the rotating shaft 401 is located in the isolation chamber 1501. At this time, the annular area between the plurality of inner plates 1402 and the plurality of arc-shaped side plates 802 forms a mixing chamber 601, and any injection pipe 301 is connected to the mixing chamber 601. The height of any inner plate 1402 is equal to the distance between the top wall of the circular turntable 501 and the bottom wall of the top plate 201. What needs to be noted here is the installation method of the inner plate 1402: the inner plate 1402, like the arc-shaped side plate 802, also has an inner wall and an outer wall, and the inner wall of each inner plate 1402 constitutes the inner wall of the isolation chamber 1501; the inner wall of any inner plate 1402 abuts against one side of the outer wall of the adjacent inner plate 1402 under the elastic force of the torsion spring. In this way, when the volume of the mixing chamber 601 becomes larger, the two adjacent inner plates 1402 are always in an abutting state (that is, the connection between the two adjacent inner plates 1402 is always in a closed state). When the isolation chamber 1501 is injected with high-pressure cleaning fluid, the inner plate 1402 is separated from the adjacent inner plate 1402 under the pressure of the high-pressure cleaning fluid.

[0041] Reference Figure 3One end of each inner plate 1402 extends into the mixing chamber 601, so that this end can also play a role in stirring the eluent during the mixing process.

[0042] Working principle: When preparing the eluent, first inject various reagents into the annular area (this annular area is the mixing chamber 601) between the inner plates 1402 and the arc-shaped side plates 802 through the injection tubes 301, and then start the motor to control the rotation of the rotating shaft 401 to rotate the circular turntable 501. The mixed liquid in the mixing chamber 601 is gradually mixed under the action of centrifugal force. At the initial stage of mixing, the rotation speed of the circular turntable 501 needs to be controlled so that the rotation speed is not too large to avoid each slide 801 gradually moving toward the front end 7011 of the chute 701 under the action of centrifugal force at the initial stage of mixing. After the eluent is mixed in the mixing chamber 601, the rotation speed of the circular turntable 501 needs to be increased so that each slide 801 moves toward the front end 7011 of the chute 701 under the action of centrifugal force.

[0043] When the head end of each slide bar 801 moves to the front end 7011 of the corresponding chute 701, the push block 901 first abuts against the inner side wall of the preparation barrel 101. As the rotation speed of the circular turntable 501 increases, the centrifugal force on each slide bar 801 also increases. This centrifugal force acts on each slide bar 801, so that each slide bar 801 always has a tendency to move toward the front end 7011 of the corresponding chute 701. As the centrifugal force increases, the inner side wall of the preparation barrel 101 will exert a reaction force on the push block 901, and this reaction force will cause each push block 901 to move a certain distance toward the center of the circular turntable 501. At this time, the connection between the two adjacent arc-shaped side plates 802 is opened, and the eluent in the mixing chamber 601 can flow to the annular area between the mixing chamber 601 and the preparation barrel 101 through this connection. When the end of the protrusion 1001 away from the slide bar 801 abuts against the front end 7011 of the slide groove 701, the push block 901 and the slide bar 801 will no longer move. At this time, there is a gap between the head end of each slide bar 801 and the front end 7011 of the corresponding slide groove 701. The washing liquid flowing into the annular area between the mixing chamber 601 and the preparation barrel 101 can flow through this gap to the bottom plate 1601 below, and then be discharged through the drain pipe 1602.

[0044] When cleaning the inside of the dispenser, the motor should also be started to control the rotation of the shaft 401, thereby rotating the circular turntable 501, and at the same time, the water pump injects the high-pressure cleaning liquid into the isolation chamber 1501 through the water pipe and the shaft 401. Then, the rotation speed of the shaft 401 is gradually increased, and the change state of the enclosure mechanism under the action of centrifugal force is the same as the change state when the eluent is prepared. In this way, the flow direction of the high-pressure cleaning liquid after staying in the isolation chamber 1501 for a period of time is: the connection between the two adjacent inner plates 1402 → the mixing chamber 601 → the connection between the two adjacent arc-shaped side plates 802 → the annular area between the mixing chamber 601 and the preparation barrel 101 → the chute 701 → the bottom plate 1601 → the drain pipe 1602, so as to achieve the purpose of cleaning the inside of the dispenser.

[0045] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. An eluent dispenser suitable for an ion chromatograph, comprising a dispenser barrel (101) of a cylindrical structure, a top plate (201) being buckled on the top of the dispenser barrel (101), and a plurality of liquid injection tubes (301) being arranged on the top plate (201); the characteristics are: A rotating shaft (401) is rotatably arranged in the preparation barrel (101), and the central axis of the rotating shaft (401) is colinear with the central axis of the preparation barrel (101); a circular rotating disk (501) is arranged in the preparation barrel (101) below the top plate (201), and the circular rotating disk (501) is fixedly connected to the rotating shaft (401), and the periphery of the circular rotating disk (501) is slidably and sealingly connected to the inner side wall of the preparation barrel (101); the circular rotating disk ( The top wall of the circular turntable (501) is provided with an enclosure mechanism that can expand under the action of centrifugal force, and the top plate (201), the enclosure mechanism and the circular turntable (501) are combined to form a mixing chamber (601) for mixing eluent, and any of the injection pipes (301) is connected to the mixing chamber (601); a drainage device is also provided below the circular turntable (501), and the eluent formed in the mixing chamber (601) can flow into the drainage device through the circular turntable (501).

2. The eluent dispenser for an ion chromatograph according to claim 1, characterized in that: A plurality of slide grooves (701) are arranged in a circular array on the circular turntable (501), and any of the slide grooves (701) has a front end (7011) and a rear end (7012), wherein the rear end (7012) is close to the center of the circular turntable (501), and the front end (7011) is close to the periphery of the circular turntable (501); Any of the slide grooves (701) extends radially along the circular turntable (501), and the length of any of the slide grooves (701) is less than the radius of the circular turntable (501); the enclosure mechanism is slidably and sealingly connected to a plurality of the slide grooves (701); and the liquid in the mixing chamber (601) can flow into the liquid discharge device through any of the slide grooves (701).

3. The eluent dispenser for an ion chromatograph according to claim 2, characterized in that: The enclosing mechanism comprises a plurality of slide bars (801) and a plurality of arc-shaped side plates (802), wherein the plurality of slide bars (801) are respectively and slidably sealedly connected to the plurality of slide grooves (701) in a one-to-one correspondence, and any of the slide bars (801) slides along the radial direction of the circular turntable (501), and the length of any of the slide bars (801) is less than the length of the slide groove (701); any of the slide bars (801) has a head end and a tail end, and any of the tail ends and the corresponding rear end (701) are connected to each other. 12) connected by a reset mechanism; any of the head ends is provided with a first column (803); one end of any of the arc-shaped side plates (802) is connected to the first column (803) by a torsion spring, and the other end thereof is in contact with an adjacent arc-shaped side plate (802), and a plurality of the arc-shaped side plates (802) are enclosed to form a side portion of the mixing chamber (601); when the volume of the mixing chamber (601) becomes larger, two adjacent arc-shaped side plates (802) are always in contact with each other.

4. The eluent dispenser for ion chromatograph according to claim 3, characterized in that: Any of the arc-shaped side plates (802) has an outer wall and an inner wall, and a plurality of the inner walls form the inner wall of the mixing chamber (601); the outer wall of any of the arc-shaped side plates (802) abuts against the inner wall of an adjacent arc-shaped side plate (802).

5. The eluent dispenser suitable for an ion chromatograph according to claim 4, characterized in that: A push block (901) is provided on any of the outer walls, and the projection length of the push block (901) in the radial direction of the circular turntable (501) is greater than the distance between the end surface of the front end (7011) and the periphery of the circular turntable (501); a protrusion (1001) is provided at any of the head ends, and the protrusion (1001) is located in the slide groove (701), and the protrusion (1001) protrudes from the head end, and the length of the protrusion (1001) protruding from the head end of the slide bar (801) is less than the projection length of the push block (901) in the radial direction of the circular turntable (501).

6. The eluent dispenser for ion chromatograph according to claim 4, characterized in that: The top wall of the circular turntable (501) and the bottom wall of the top plate (201) are parallel to each other; the height of any of the arc-shaped side plates (802) is equal to the distance between the top wall of the circular turntable (501) and the bottom wall of the top plate (201).

7. An eluent dispenser suitable for an ion chromatograph according to any one of claims 3 to 6, characterized in that: Any of the reset mechanisms comprises a guide rod (1101) slidably connected to the slide bar (801) and a reset spring (1102) arranged at the head end of the guide rod (1101), wherein the end of the guide rod (1101) away from its head end is connected to the rear end (7012); the end of the reset spring (1102) away from the guide rod (1101) is connected to the head end, and the central axis of the guide rod (1101) and the telescopic direction of the reset spring (1102) are parallel to the sliding direction of the slide bar (801).

8. The eluent dispenser for ion chromatograph according to claim 7, characterized in that: The middle part of the circular turntable (501) is provided with a plurality of installation cavities (1201) in a circular array around its own central axis, and a sealing mechanism is provided in any of the installation cavities (1201), and the plurality of sealing mechanisms correspond one to one with the plurality of slide grooves (701); any of the sealing mechanisms comprises a fixed shaft (1301) provided in the installation cavity (1201) and a torsion spring and a sealing belt (1302) both wound around the fixed shaft (1301), one end of the sealing belt (1302) is connected to the torsion spring, and the other end thereof is connected to the tail end; the width of the sealing belt (1302) is greater than or equal to the width of the slide groove (701); when the circular turntable (501) is not rotating, the tail end abuts against the rear end (7012), and the sealing belt (1302) is tightened and wound around the fixed shaft (1301).

9. The eluent dispenser for ion chromatograph according to claim 8, characterized in that: The rotating shaft (401) is a hollow shaft; any of the tail ends is provided with a second column (1401), and any of the second columns (1401) is rotatably connected to an inner plate (1402); one end of any of the inner plates (1402) is connected to the second column (1401) via a torsion spring, and the other end thereof abuts against an adjacent inner plate (1402); a plurality of the inner plates (1402) are enclosed to form an isolation chamber (1501), and the top end of the rotating shaft (401) is located in the isolation chamber (1501); a plurality of the inner plates (1402) and a plurality of the arcs The mixing chamber (601) is formed in an annular area between the circular side plates (802); the height of any of the inner plates (1402) is equal to the distance between the top wall of the circular turntable (501) and the bottom wall of the top plate (201); when the volume of the mixing chamber (601) increases, two adjacent inner plates (1402) are always in abutment; when high-pressure cleaning liquid is injected into the isolation chamber (1501), the inner plates (1402) are separated from adjacent inner plates (1402); and any of the injection pipes (301) is connected to the mixing chamber (601).

10. A method for preparing an eluent, characterized in that: The eluent dispenser for ion chromatograph according to claim 9 comprises the following steps: S1. When preparing the eluent, firstly inject various reagents into the annular area between the plurality of inner plates (1402) and the plurality of arc-shaped side plates (802) through the plurality of injection pipes (301); S2, starting the motor to control the rotation of the rotating shaft (401) so as to make the circular rotating disk (501) rotate; the mixed liquid in the mixing chamber (601) is gradually mixed under the action of centrifugal force; in the initial stage of mixing, the circular rotating disk (501) needs to rotate at a low speed to prevent each slide bar (801) from gradually moving toward the front end (7011) of the slide groove (701) under the action of centrifugal force; S3, after the eluent is mixed in the mixing chamber (601), the rotation speed of the circular turntable (501) is increased so that each slide bar (801) moves toward the front end (7011) of the slide groove (701) under the action of centrifugal force; S4. When the head end of each slide bar (801) moves to the front end (7011) of the corresponding slide groove (701), the push block (901) first contacts the inner wall of the preparation barrel (101). As the rotation speed of the circular turntable (501) increases, the centrifugal force on each slide bar (801) also increases. This centrifugal force acts on each slide bar (801), so that each slide bar (801) always moves toward the front end (7011) of the corresponding slide groove (701). ) movement; as the centrifugal force increases, the inner wall of the preparation barrel (101) exerts a reaction force on the push block (901), and this reaction force causes each push block (901) to move a certain distance toward the center of the circular turntable (501). At this time, the connection between the two adjacent arc-shaped side plates (802) is opened, and the eluent in the mixing chamber (601) can flow through this connection to the annular area between the mixing chamber (601) and the preparation barrel (101); S5. When the end of the protrusion (1001) away from the slide bar (801) abuts against the front end (7011) of the slide groove (701), the push block (901) and the slide bar (801) no longer move. At this time, there is a gap between the head end of each slide bar (801) and the front end (7011) of the corresponding slide groove (701). The eluent flowing to the annular area between the mixing chamber (601) and the preparation barrel (101) can flow through this gap to the bottom plate (1601) below, and then be discharged through the drain pipe (1602).

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