High performance liquid chromatograph convenient for feeding
Through innovative design of mixing and speed control devices, the problems of uneven mixing of liquid raw materials, unadjustable delivery speed, and device instability in liquid chromatographs have been solved, achieving efficient feeding and stable analysis in liquid chromatographs.
Patent Information
- Application Number
- CN202423038411.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing liquid chromatographs suffer from problems such as insufficient mixing of liquid raw materials, inflexible adjustment of delivery speed, and poor stability of adjustment devices in the feeding system, which affect the accuracy and reliability of analytical results.
The innovative design incorporates a mixing and speed control device, including a mixing chamber, support frame, speed control device, and limiting mechanism. Through the coordinated operation of the motor and reducer, it achieves thorough mixing of liquid raw materials and precise control of conveying speed, while the limit design prevents structural loosening.
This ensures thorough mixing of liquid raw materials, improves the accuracy and reliability of analytical results, prevents flow rate instability, and avoids raw material waste and interruption of the analysis process.
Smart Images
Figure CN223581872U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of high performance liquid chromatograph of convenient feeding technical field, more specifically, it relates to a kind of high performance liquid chromatograph of convenient feeding. BACKGROUND
[0002] In today's analytical chemistry field, high performance liquid chromatograph is widely used as an important analytical instrument, however, there are many technical problems to be solved in the existing liquid chromatograph technology, which seriously restricts the improvement of analysis efficiency and accuracy.
[0003] Firstly, in the traditional liquid chromatograph feeding system, the original way of direct conveying is mostly used, that is, various liquid raw materials are directly conveyed to the chromatograph for analysis through simple pipeline, and this simple and crude conveying method has serious technical defects, because there is no effective premixing process, different raw materials cannot be fully mixed, and this insufficient mixing directly affects the accuracy and reliability of the analysis results, especially in experiments that require precise control of the proportion of different components, this technical defect has brought immeasurable negative effects.
[0004] Secondly, for the conveying system of liquid raw materials, the existing technology generally uses the way of synchronously conveying multiple parallel pipelines, however, this design has a fundamental technical defect: the inner wall structure of the pipeline is too simple and lacks necessary adjustment mechanism, this rigid design makes it impossible to flexibly adjust the conveying speed of each pipeline according to the physical properties of different liquid raw materials and the required proportion, the lack of speed adjustment capability not only affects the uniformity of mixing, but also may cause excess or deficiency of some components, thereby seriously affecting the accuracy of the analysis results.
[0005] More troublesome is that although some liquid chromatographs equipped with flow rate adjustment function have appeared on the market, the technical level of these adjustment devices is still quite primary, these adjustment mechanisms are too simple and rough in design, lack necessary support and protection mechanism, in actual use, due to the continuous impact of liquid on the inner wall of the pipeline, combined with the inevitable mechanical vibration during instrument operation, these simple adjustment devices are prone to structural loosening, this structural instability directly leads to deviation and fluctuation of the pre-adjusted flow rate during use, not only affecting the repeatability and reliability of the analysis results, but also possibly causing waste of raw materials, in some cases, this unstable flow rate may even cause interruption of the analysis process, causing time and economic loss to the laboratory. INVENTION CONTENTS
[0006] (I) Technical problems solved
[0007] The utility model provides a high -efficient liquid chromatograph of convenient feeding to solve the technical problem mentioned in background art in view of the problems of prior art.
[0008] (II) Technical solutions
[0009] To achieve the above object, the utility model provides the following technical scheme: a kind of high -efficient liquid chromatograph of convenient feeding, including chromatograph, it is characterized by: the chromatograph is provided with mixing device, the mixing device includes bin cover, mixing bin and support frame, the mixing bin is detachably installed on support frame, the bin cover is detachably installed on mixing bin, the bin cover is connected with speed regulating device, the speed regulating device includes connecting pipe, installation pipe, transmission wheel, rotating plate, driving gear, rotating sleeve and rotating pipe, the rotating sleeve both ends are rotatably connected with installation pipe and connecting pipe, the installation pipe is fixedly connected in bin cover side, the transmission wheel is rotatably arranged in connecting pipe inside, the driving gear is fixedly connected in rotating pipe one end, and multiple transmission wheel is meshed with driving gear respectively, the rotating pipe is fixedly connected in rotating sleeve inner wall, the connecting pipe outside is provided with limiting mechanism, the limiting mechanism includes fixed block, arc rod, sliding sleeve, movable plate, return block, return slot, return sleeve, arc slot and clamping plate, the fixed block is fixedly arranged in connecting pipe outside, the arc rod is connected in return block one side, the sliding sleeve is sleeved in connecting pipe outside, the movable plate is fixedly connected in sliding sleeve one side, the return block is fixedly connected in return sleeve one side, the return slot is opened in return sleeve, the return sleeve is rotatably sleeved in connecting pipe outside, the arc slot is opened in fixed block, the clamping plate is arranged in movable plate one side.
[0010] The utility model further sets up, rotating plate is opened with multiple movable holes.
[0011] The utility model further sets up, rotating sleeve lateral wall is slidably equipped with multiple clamping rods, one end of clamping rod is equipped with connecting spring, the connecting pipe outer wall is opened with multiple clamping grooves, one end of clamping rod is connected with rotating sleeve outer wall through connecting spring, and the other end of clamping rod is inserted into clamping groove.
[0012] The utility model further sets up, the connecting pipe outside is opened with sliding slot, the sliding sleeve inside is equipped with sliding block in correspondence, and sliding slot and sliding block are adapted.
[0013] The utility model further sets up, one side of sliding sleeve is connected with movable spring, the other side of movable spring is contact type connection with return sleeve, and the arc rod outside is sleeved with return spring.
[0014] The utility model further sets up, mixing bin is movably equipped with mixing frame, the mixing bin is v type structure design, and the mixing frame is symmetrically provided with two.
[0015] The utility model further sets up, detachable motor and speed reducer are established on the bin cover, the speed reducer input and motor output end connection, the speed reducer output end is connected with the mixed frame top end, and the setting of motor and speed reducer provides stable power output.
[0016] The utility model further sets up, the bottom end of mixing bin is equipped with the downcomer, the downcomer bottom end is connected with the chromatograph input, and the setting of downcomer facilitates the downloading operation.
[0017] (Three) beneficial effects
[0018] Compared with the prior art, the utility model provides a kind of high efficiency liquid chromatograph of convenient feeding, with following beneficial effects:
[0019] 1, mixing device is innovated by the combination design of bin cover, mixing bin and support frame etc., and the synergistic work of mixing frame, motor and speed reducer is combined, successfully solve the technical problem of insufficient mixing of liquid raw materials mentioned in background art, the device adopts special v-shaped mixing bin structure design, cooperate with the rotation of the symmetrically arranged mixing frame under the control of speed reducer, effectively prevent the problem of stable vortex in mixing process, ensure the sufficient mixing of different liquid raw materials, fundamentally overcome the problem of uneven mixing caused by traditional direct conveying mode, significantly improve the accuracy and reliability of analysis result.
[0020] 2, speed regulating device is precisely matched with connecting pipe, mounting pipe, transmission wheel, rotating plate, driving tooth, rotating sleeve and rotating pipe, effectively solve the problem that liquid conveying speed cannot be flexibly adjusted in background art, rotating sleeve drives rotating pipe and driving tooth to rotate, the adjustment of rotating plate angle is realized by the meshing transmission of driving tooth and transmission wheel, then the gap between adjacent rotating plates and the angle of movable hole are changed, thereby realizing the accurate control of conveying speed of different liquid raw materials, meeting the conveying demand of different raw materials, and ensuring the accuracy of component distribution ratio.
[0021] 3, limiting mechanism is cleverly matched with fixed block, arc-shaped rod, sliding sleeve, movable plate, return block, return slot, return sleeve, arc-shaped slot and clamping plate etc., successfully solve the problem of poor stability of adjusting device mentioned in background art, the mechanism adopts multiple limiting design, the sliding sleeve is limited by movable plate and clamping plate, the sliding sleeve is limited by sliding block and sliding slot, the outer end of clamping rod is limited by the inner wall of sliding sleeve, and the rotating sleeve is limited by the cooperation of clamping rod and clamping slot, effectively prevent the structure loosening caused by liquid impact and mechanical vibration, ensure that the flow rate after adjustment remains stable, fundamentally avoid the problems of feeding interruption and raw material waste caused by unstable structure. DRAWINGS
[0022] Figure 1The utility model discloses a whole structure schematic diagram of high -efficient liquid chromatograph of convenient feeding.
[0023] Figure 2 The utility model discloses a sectional structure schematic diagram.
[0024] Figure 3 For Figure 2 The utility model discloses a sectional structure schematic diagram of the second angle of speed regulation device and limiting mechanism part.
[0025] Figure 4 The utility model discloses a sectional structure schematic diagram of the second angle of speed regulation device and limiting mechanism part.
[0026] Figure 5 For Figure 4 The utility model discloses a sectional structure schematic diagram of the second angle of speed regulation device and limiting mechanism part.
[0027] Figure 6 The utility model discloses a sectional structure schematic diagram of the second angle of speed regulation device and limiting mechanism part.
[0028] In the figure: 1, chromatograph;2, bin cover;3, mixing bin;4, support frame;5, connecting pipe;6, mounting pipe;7, transmission wheel;8, rotation plate;9, driving tooth;10, rotation sleeve;11, rotation pipe;12, fixed block;13, arc rod;14, sliding sleeve;15, movable plate;16, return block;17, return groove;18, return sleeve;19, arc groove;20, clamping plate;21, movable hole;22, clamping rod;23, connecting spring;24, clamping groove;25, sliding groove;26, sliding block;27, movable spring;28, return spring;29, mixing frame;30, motor;31, speed reducer;32, blanking pipe. DETAILED DESCRIPTION
[0029] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.
[0030] It should be noted that all technical and scientific terms used in the present application have the same meaning as that generally understood by ordinary skilled in the art to which the present application belongs, unless otherwise specified.
[0031] In the present application, the orientation such as "up, down" is generally directed to the direction shown in the drawings, or is directed to the vertical, perpendicular or gravity direction, unless otherwise specified. Similarly, for the convenience of understanding and description, "left, right" is generally directed to the left and right shown in the drawings, and "inner, outer" is directed to the inner and outer relative to the contour of each component. However, the above orientation words are not used to limit the present application.
[0032] Please refer to Figures 1-6The utility model provides a kind of high efficiency liquid chromatograph of convenient feeding, chromatograph 1 is provided with mixing device, mixing device includes warehouse cover 2, mixing bin 3 and support frame 4, mixing bin 3 is detachably installed on support frame 4, warehouse cover 2 is detachably installed on mixing bin 3, speed regulating device is connected on warehouse cover 2, speed regulating device includes connecting pipe 5, installation pipe 6, transmission wheel 7, rotating plate 8, driving tooth 9, rotating sleeve 10 and rotating pipe 11, rotating sleeve 10 both ends are rotatably connected with installation pipe 6 and connecting pipe 5, installation pipe 6 is fixedly connected on one side of warehouse cover 2, transmission wheel 7 is rotatably arranged in the inside of connecting pipe 5, driving tooth 9 is fixedly connected on one end of rotating pipe 11, and multiple transmission wheel 7 is meshed with driving tooth 9 respectively, rotating pipe 11 is fixedly connected on the inner wall of rotating sleeve 10, limiting mechanism is provided on the outside of connecting pipe 5, limiting mechanism includes fixed block 12, arc rod 13, sliding sleeve 14, movable plate 15, return block 16, return slot 17, return sleeve 18, arc slot 19 and clamping plate 20, fixed block 12 is fixedly arranged on the outside of connecting pipe 5, arc rod 13 is connected on one side of return block 16, sliding sleeve 14 is sleeved on the outside of connecting pipe 5, movable plate 15 is fixedly connected on one side of sliding sleeve 14, return block 16 is fixedly connected on one side of return sleeve 18, return slot 17 is opened on return sleeve 18, return sleeve 18 is rotatably sleeved on the outside of connecting pipe 5, arc slot 19 is opened in fixed block 12, clamping plate 20 is arranged on one side of movable plate 15.
[0033] Multiple movable holes 21 are opened in rotating plate 8.
[0034] Multiple clamping rods 22 are slidably arranged on the side wall of rotating sleeve 10, one end of clamping rod 22 is provided with connecting spring 23, multiple clamping grooves 24 are opened on the outer wall of connecting pipe 5, one end of clamping rod 22 is connected with the outer wall of rotating sleeve 10 through connecting spring 23, and the other end of clamping rod 22 is inserted into clamping groove 24.
[0035] Slip groove 25 is opened on the outside of connecting pipe 5, and sliding block 26 is correspondingly arranged on the inside of sliding sleeve 14, and slip groove 25 is matched with sliding block 26.
[0036] Movable spring 27 is connected on one side of sliding sleeve 14, and the other side of movable spring 27 is contactly connected with return sleeve 18, and return spring 28 is sleeved on the outside of arc rod 13.
[0037] In the embodiment, when the feeding speed of the corresponding pipeline needs to be adjusted, first, the return block 16 is pulled, the return block 16 drives the arc-shaped rod 13 to move along the arc-shaped slot 19 in the inner side of the fixed block 12, and the return block 16 is in cooperation with the fixed block 12 to extrude the return spring 28 sleeved outside the arc-shaped rod 13, at the same time, the return block 16 drives the return sleeve 18 to drive the return slot 17 to rotate, when the return spring 28 is extruded to the limit, the return slot 17 is just moved to the position corresponding to the clamping plate 20, then the sliding sleeve 14 is pushed, the sliding sleeve 14 drives the clamping plate 20 to slide through the movable plate 15, and the sliding sleeve 14 drives the sliding block 26 arranged in the inner side to slide along the sliding slot 25, at the same time, the sliding sleeve 14 is in cooperation with the return sleeve 18 to extrude the movable spring 27, when the movable spring 27 is extruded to the limit, the movable plate 15 just drives the corresponding clamping plate 20 to pass through the return slot 17 and make the clamping plate 20 move to the other side of the return sleeve 18, then the return block 16 is released, the return spring 28 drives the return block 16 to reset, then the return block 16 drives the arc-shaped rod 13 and the return sleeve 18 to reset, then the return sleeve 18 drives the return slot 17 to reset to the position not corresponding to the clamping plate 20, at this time, the movable plate 15 and the corresponding clamping plate 20 cooperate to limit the sliding sleeve 14 to one side of the return sleeve 18, at this time, the outer end of the clamping rod 22 loses the limitation of the inner wall of the sliding sleeve 14, then the rotating sleeve 10 is rotated, the rotating sleeve 10 drives the plurality of clamping rods 22 arranged on the sliding rod of the side wall to move, then the side wall of the clamping slot 24 extrudes one end of the clamping rod 22, because the round corner design of the edge of the clamping slot 24 and the end of the clamping rod 22, then one end of the clamping rod 22 slides out of the clamping slot 24, and the other end of the clamping rod 22 drives the connecting spring 23 to stretch, at the same time, the rotating sleeve 10 drives the driving teeth 9 to rotate through the rotating pipe 11 arranged in the inner side, then the driving teeth 9 drive the transmission wheel 7 engaged therewith to rotate, then the transmission wheel 7 drives the rotating plate 8 arranged on one side to rotate, then the rotating plate 8 drives the movable hole 21 to change the angle, at the same time, the gap between the adjacent rotating plates 8 changes, so that the passing volume of the liquid raw material changes, thereby the conveying speed of the liquid raw material is changed, after the adjustment is appropriate, the rotating sleeve 10 is stopped, and the connecting spring 23 drives the clamping rod 22 to reset and insert into the corresponding clamping slot 24, then the return block 16 is pulled again, the return block 16 drives the arc-shaped rod 13 to move along the arc-shaped slot 19 again, and the return block 16 extrudes the return spring 28 again in cooperation with the fixed block 12, at the same time, the return block 16 drives the return sleeve 18 to drive the return slot 17 to rotate again, when the return slot 17 moves to the position corresponding to the clamping plate 20, the movable spring 27 drives the sliding sleeve 14 to slide and reset, then the sliding sleeve 14 drives the sliding block 26 to slide along the sliding slot 25 and reset, at the same time, the sliding sleeve 14 drives the clamping plate 20 to slide and reset through the movable plate 15, when the movable spring 27 is completely reset, the movable plate 15 drives the other two clamping plates 20 to move to the two sides of the return sleeve 18 respectively, at this time, the return block 16 is released, the return spring 28 drives the return block 16 to reset again,Then the return block 16 will drive the arc-shaped rod 13 and the return sleeve 18 to reset, and then the return sleeve 18 will drive the return groove 17 to reset and move to a position not corresponding to the clamping plate 20. At this time, the movable plate 15 and the corresponding two clamping plates 20 cooperate to limit the sliding sleeve 14 to one side of the return sleeve 18, and cooperate with the sliding block 26 and the sliding groove 25 to limit the sliding sleeve 14, so that the sliding sleeve 14 cannot move. Then the inner wall of the sliding sleeve 14 will limit the outer end of the clamping rod 22 again to prevent the clamping rod 22 from moving. Then the clamping rod 22 will cooperate with the clamping groove 24 to limit the rotating sleeve 10, preventing the rotating sleeve 10 and the rotating pipe 11 from moving, thereby ensuring the stability of the flow rate adjustment.
[0038] Please refer to Figures 1-3 As a further embodiment of the whole device: the mixing bin 3 is provided with a mixing frame 29, and the mixing bin 3 is designed in a v-shaped structure, and the mixing frame 29 is symmetrically provided with two.
[0039] The motor 30 and the speed reducer 31 are detachably arranged on the bin cover 2, the input end of the speed reducer 31 is connected with the output end of the motor 30, and the output end of the speed reducer 31 is connected with the top end of the mixing frame 29.
[0040] The discharge pipe 32 is connected to the bottom end of the mixing bin 3, and the bottom end of the discharge pipe 32 is connected with the input end of the chromatograph 1.
[0041] More specifically, when the device needs to be used, first connect the external conveying device with the connecting pipe 5, then convey different liquid raw materials into the mixing bin 3 through the connecting pipe 5 and the mounting pipe 6, respectively, then turn on the two motors 30 installed on the bin cover 2, then the motors 30 drive the corresponding mixing frames 29 to rotate after the speed reduction of the speed reducers 31. Due to the special structure design of the mixing bin 3 and the special structure design of the two mixing frames 29, stable vortexes can be effectively prevented in the mixing bin 3, thereby ensuring the uniformity of the mixing of the liquid raw materials. When the mixing is completed, open the control valve arranged on the discharge pipe 32 to make the mixed raw materials enter the chromatograph 1 for analysis and detection.
[0042] When the feeding speed of the corresponding pipeline needs to be adjusted, the return block 16 is first actuated, which drives the arc-shaped rod 13 to move along the arc-shaped slot 19 in the inner side of the fixed block 12, and the return block 16 is in cooperation with the fixed block 12 to extrude the return spring 28 sleeved outside the arc-shaped rod 13, at the same time, the return block 16 drives the return sleeve 18 to rotate, when the return spring 28 is extruded to the limit, the return slot 17 is just moved to the position corresponding to the clamping plate 20, then the sliding sleeve 14 is pushed, which drives the clamping plate 20 to slide through the movable plate 15, and the sliding sleeve 14 drives the sliding block 26 arranged on the inner side to slide along the sliding slot 25, at the same time, the sliding sleeve 14 extrudes the movable spring 27 in cooperation with the return sleeve 18, when the movable spring 27 is extruded to the limit, the movable plate 15 drives the corresponding clamping plate 20 to pass through the return slot 17 and move to the other side of the return sleeve 18, then the return block 16 is released, the return spring 28 drives the return block 16 to reset, then the return block 16 drives the arc-shaped rod 13 and the return sleeve 18 to reset, then the return sleeve 18 drives the return slot 17 to reset to the position not corresponding to the clamping plate 20, at this time, the movable plate 15 and the corresponding clamping plate 20 cooperate to limit the sliding sleeve 14 to one side of the return sleeve 18, at this time, the outer end of the clamping rod 22 loses the limitation of the inner wall of the sliding sleeve 14, then the rotating sleeve 10 is rotated, which drives the plurality of clamping rods 22 arranged on the sliding rods of the side wall to move, then the side wall of the clamping slot 24 extrudes one end of the clamping rod 22, due to the design of the round corners at the edge of the clamping slot 24 and the end of the clamping rod 22, then one end of the clamping rod 22 slides out of the clamping slot 24, and the other end of the clamping rod 22 drives the connecting spring 23 to stretch, at the same time, the rotating sleeve 10 drives the driving gear 9 to rotate through the rotating pipe 11 arranged inside, then the driving gear 9 drives the transmission wheel 7 engaged therewith to rotate, then the transmission wheel 7 drives the rotating plate 8 arranged on one side to rotate, then the rotating plate 8 drives the movable hole 21 to change the angle, at the same time, the gap between the adjacent rotating plates 8 changes, so that the passing volume of the liquid raw material changes, thereby changing the conveying speed of the liquid raw material, after the adjustment is appropriate, the rotating sleeve 10 is stopped, and the connecting spring 23 drives the clamping rod 22 to reset and insert into the corresponding clamping slot 24, then the return block 16 is actuated again, which drives the arc-shaped rod 13 to move along the arc-shaped slot 19 again, and the return block 16 extrudes the return spring 28 in cooperation with the fixed block 12 again, at the same time, the return block 16 drives the return slot 17 to rotate through the return sleeve 18, when the return slot 17 moves to the position corresponding to the clamping plate 20, the movable spring 27 drives the sliding sleeve 14 to slide and reset, then the sliding sleeve 14 drives the sliding block 26 to slide along the sliding slot 25 and reset, at the same time, the sliding sleeve 14 drives the clamping plate 20 to slide and reset through the movable plate 15, when the movable spring 27 is completely reset, the movable plate 15 drives the other two clamping plates 20 to move to the two sides of the return sleeve 18 respectively, at this time, the return block 16 is released, the return spring 28 drives the return block 16 to reset again,Then the return block 16 will drive the arc-shaped rod 13 and the return sleeve 18 to reset, and then the return sleeve 18 will drive the return groove 17 to reset and move to a position not corresponding to the clamping plate 20, at this time the movable plate 15 and the corresponding two clamping plates 20 cooperate to limit the sliding sleeve 14 to one side of the return sleeve 18, cooperate with the sliding block 26 and the sliding groove 25 to limit the sliding sleeve 14, so that the sliding sleeve 14 will not move, then the inner wall of the sliding sleeve 14 will limit the outer end of the clamping rod 22 again, prevent the clamping rod 22 from moving, then the clamping rod 22 will cooperate with the clamping groove 24 to limit the rotating sleeve 10, prevent the rotating sleeve 10 and the rotating pipe 11 from moving, so as to ensure the stability effect after adjusting the flow rate.
[0043] When the device needs to be used, first connect with the connecting pipe 5 through the external conveying device, then different liquid raw materials are conveyed into the mixing bin 3 through the connecting pipe 5 and the mounting pipe 6 respectively, then the two motors 30 installed on the bin cover 2 are opened, then the motors 30 drive the corresponding mixing frames 29 to rotate after the speed reduction of the reducers 31, due to the special structure design of the mixing bin 3 and the special structure design of the two mixing frames 29, the stable vortex in the mixing bin 3 can be effectively prevented, so as to ensure the uniformity of the mixing of the liquid raw materials, when the mixing is completely finished, the control valve arranged on the discharge pipe 32 is opened, so that the mixed raw materials enter the chromatograph 1 through the discharge pipe 32 for analysis and detection.
[0044] In all the schemes mentioned above, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection mode, which will not be described one by one, and the fixed connection mentioned above is preferably considered to be welded, although the embodiments of the utility model have been shown and described, those skilled in the art can understand that the embodiments can be changed, modified, replaced and modified in various ways without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A high performance liquid chromatograph with convenient feeding, comprising a chromatograph (1), characterized in that: The chromatograph (1) is provided with a mixing device, the mixing device comprises a cover (2), a mixing bin (3) and a support frame (4), the mixing bin (3) is installed on the support frame (4), the cover (2) is installed on the mixing bin (3), a speed regulating device is connected to the cover (2), the speed regulating device comprises a connecting pipe (5), a mounting pipe (6), a transmission wheel (7), a rotating plate (8), a driving gear (9), a rotating sleeve (10) and a rotating pipe (11), the transmission wheel (7) is arranged on the inner side of the connecting pipe (5), the driving gear (9) is connected to one end of the rotating pipe (11), the rotating pipe (11) is connected to the inner wall of the rotating sleeve (10), a limiting mechanism is arranged on the outer side of the connecting pipe (5), the limiting mechanism comprises a fixed block (12), an arc-shaped rod (13), a sliding sleeve (14), a movable plate (15), a return block (16), a return groove (17), a return sleeve (18), an arc-shaped groove (19) and a clamping plate (20), the arc-shaped rod (13) is connected to one side of the return block (16), the sliding sleeve (14) is sleeved on the outer side of the connecting pipe (5), the movable plate (15) is connected to one side of the sliding sleeve (14), the return groove (17) is formed on the return sleeve (18), the return sleeve (18) is sleeved on the outer side of the connecting pipe (5), the arc-shaped groove (19) is formed in the fixed block (12), and the clamping plate (20) is arranged on one side of the movable plate (15).
2. The high performance liquid chromatograph of claim 1, wherein: A plurality of movable holes (21) are formed in the rotating plate (8).
3. The high-performance liquid chromatograph with convenient feed according to claim 1, characterized in that: A plurality of clamping rods (22) are slidably arranged on the side wall of the rotating sleeve (10), one end of the clamping rod (22) is provided with a connecting spring (23), a plurality of clamping grooves (24) are formed in the outer wall of the connecting pipe (5), one end of the clamping rod (22) is connected to the outer wall of the rotating sleeve (10) through the connecting spring (23), and the other end of the clamping rod (22) is inserted into the clamping groove (24).
4. A high performance liquid chromatograph with convenient feeding according to claim 3, characterized in that: A sliding groove (25) is formed in the outer side of the connecting pipe (5), and a sliding block (26) is arranged on the inner side of the sliding sleeve (14) in a corresponding manner.
5. A high performance liquid chromatograph with convenient feeding according to claim 4, characterized in that: An active spring (27) is connected to one side of the sliding sleeve (14), the other side of the active spring (27) is connected to the return sleeve (18) in a contact manner, and a return spring (28) is sleeved on the outer side of the arc-shaped rod (13).
6. A high performance liquid chromatograph with convenient feeding according to any one of claims 1-5, characterized in that: A mixing frame (29) is movably arranged in the mixing bin (3), the mixing bin (3) is designed in a v-shaped structure, and the mixing frame (29) is symmetrically provided with two.
7. A high performance liquid chromatograph with convenient feeding according to claim 6, characterized in that: A motor (30) and a speed reducer (31) are detachably arranged on the cover (2), the input end of the speed reducer (31) is connected with the output end of the motor (30), and the output end of the speed reducer (31) is connected with the top end of the mixing frame (29).
8. A high performance liquid chromatograph with convenient feeding according to claim 7, characterized in that: A discharging pipe (32) is connected to the bottom end of the mixing bin (3), and the bottom end of the discharging pipe (32) is connected with the input end of the chromatograph (1).