Liquid chromatograph

Abstract

The utility model belongs to the technical field of liquid chromatographs, and particularly relates to a liquid chromatograph which comprises a liquid chromatogram body, a rotary tray is arranged above the liquid chromatogram body, four reagent bottle supporting plates which are uniformly distributed are arranged above the rotary tray, and a plurality of reagent bottle supporting plates are arranged on the rotary tray. The top end of the reagent bottle supporting plate is fixedly connected with three evenly-distributed elastic limiting pieces, a pressure sensor is fixedly connected between the rotating tray and the reagent bottle supporting plate, the top end of the rotating tray is fixedly connected with a cross contrast color plate, and the bottom end of the rotating tray is fixedly connected with a driving motor. By means of cooperation of a rotating tray, a reagent bottle supporting plate, a pressure sensor and a driving motor, the reagent bottle with the minimum remaining amount can be rotated to the front face of the device, the reagent bottle is positioned in a large-gap interval mode in cooperation with an elastic limiting piece, and therefore a worker can observe the remaining amount of the reagent more conveniently; the conveying pipes connected with the reagent bottles are prevented from being mutually wound to influence rotation of the reagent bottles.

Description

Technical Field

[0001] This utility model belongs to the field of liquid chromatography technology, and specifically relates to a liquid chromatograph. Background Technology

[0002] Liquid chromatographs (LCs) can separate and analyze organic and inorganic compounds. The top of the LC has a solvent tray for holding the required solvents and solvent bottles. Quaternary gradient LC systems require four solvents: water, organic solvent, buffer salt solution, and additives. Four solvent bottles are always kept in the solvent tray to hold the solvents, and these are connected to pumps A and B on the back of the instrument via delivery tubes. Before starting the instrument, the operator needs to check the solvent content in the bottles. However, due to limitations in bottle volume and tray area, the four bottles are placed in pairs, one in front of the other. During the check, when inspecting the solution in the bottles at the rear, the operator cannot directly observe the remaining solvent. The bottles at the rear must be lifted to check the remaining solvent. Furthermore, the delivery tubes connected to each bottle must be carefully checked before and after handling the bottles to avoid pulling on the delivery tubes, deforming or folding the bottles, which could render the delivery tubes unusable. Checking the remaining solvent and adding solvent is a cumbersome and inconvenient process. Utility Model Content

[0003] This invention provides a liquid chromatograph that allows for more convenient observation of remaining reagent levels and easier addition of reagents with low remaining levels.

[0004] This utility model provides the following technical solution: a liquid chromatograph, including a liquid chromatograph body, a rotating tray above the liquid chromatograph body, four evenly distributed reagent bottle support plates above the rotating tray, three evenly distributed elastic limiting plates fixedly connected to the top of the reagent bottle support plates, a pressure sensor fixedly connected between the rotating tray and the reagent bottle support plates, a cross-shaped colorimetric plate fixedly connected to the top of the rotating tray, a drive motor fixedly connected to the bottom of the rotating tray, and a support rod fixedly connected to the top of the rotating tray.

[0005] The elastic limiting piece is fixedly connected to a bending extrusion piece at its top end, and the bending extrusion piece is fixedly connected to an inclined guide piece at its top end.

[0006] The bottom of the rotating tray is fixedly connected to a mating plate.

[0007] The bottom of the drive motor is fixedly connected to a protective containment chamber, and the bottom of the protective containment chamber is fixedly connected to the liquid chromatograph body.

[0008] The protective containment chamber has a first limiting plate fixedly connected to the inner wall at the bottom, and a second limiting plate fixedly connected to the inner wall at the bottom, with the first limiting plate and the second limiting plate being symmetrically distributed.

[0009] The support rod is fixedly connected to a positioning plate at its top, and the positioning plate has a clearance groove on its side wall.

[0010] The protective containment chamber is fixedly connected to the inner wall at the bottom, and the controller is connected to the four pressure sensors and the drive motor.

[0011] The beneficial effects of this utility model are as follows: by using a rotating tray, reagent bottle support plate, pressure sensor and drive motor in combination, the reagent bottle with the least remaining amount can be rotated to the front of the equipment. With the help of elastic limiting plates, the reagent bottle is positioned with a large gap, so that the staff can more easily observe the remaining amount of reagent. Furthermore, with the support rod supporting the delivery tube connected to the reagent bottle, the delivery tubes connected to the reagent bottle are prevented from getting tangled and affecting the rotation of the reagent bottle, so that the staff can more easily add reagent with little remaining amount.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0015] Figure 3 This is a top view of the drive motor in this utility model;

[0016] Figure 4 This is a top view of the rotating tray in this utility model;

[0017] Figure 5 This is a top view of the support rod in this utility model.

[0018] In the diagram: 1. Liquid chromatograph body; 2. Rotating tray; 21. Reagent bottle support plate; 22. Elastic limiting plate; 221. Bending and squeezing plate; 222. Inclined guide plate; 23. Pressure sensor; 24. Cross-shaped color contrast plate; 25. Fitting plate; 3. Drive motor; 31. Protective housing; 32. Limiting plate one; 33. Limiting plate two; 4. Support rod; 41. Positioning plate; 42. Leaving locking groove; 5. Controller. Detailed Implementation

[0019] Please see Figures 1-5The present invention provides the following technical solution: a liquid chromatograph, including a liquid chromatograph body 1, a rotating tray 2 above the liquid chromatograph body 1, four evenly distributed reagent bottle support plates 21 above the rotating tray 2, three evenly distributed elastic limiting plates 22 fixedly connected to the top of the reagent bottle support plates 21, a pressure sensor 23 fixedly connected between the rotating tray 2 and the reagent bottle support plates 21, a cross-shaped colorimetric plate 24 fixedly connected to the top of the rotating tray 2, a drive motor 3 fixedly connected to the bottom of the rotating tray 2, and a support rod 4 fixedly connected to the top of the rotating tray 2.

[0020] In this implementation plan: The operator places four reagent bottles, each already filled with reagent, on top of the four reagent bottle support plates 21. Elastic limiting plates 22 restrict the reagent bottles' position. A pressure sensor 23 weighs the reagent bottles and the reagents within them, sending a pressure signal to the controller 5. The controller 5 then controls the drive motor 3 to rotate, causing the rotating tray 2 to rotate and position the reagent bottle with the least amount of reagent to the front of the equipment. Before using the liquid chromatograph, the operator does not need to perform any additional operations and can directly observe the remaining reagent level through the gaps in the elastic limiting plates 22. If the reagent bottle with the least remaining reagent does not require refilling, the other bottles do not require refilling either. When refilling is needed, the reagent bottle has already rotated to a convenient position for the operator to add the reagent. The rotation rules for the rotating tray 2 are as follows: when one of the two reagent bottles in front has the least remaining volume, the rotating tray 2 does not need to rotate; when the reagent bottle on the left rear has the least remaining volume, the rotating tray 2 rotates 90 degrees counterclockwise; when the reagent bottle on the right rear has the least remaining volume, the rotating tray 2 rotates 90 degrees clockwise. For subsequent rotation adjustments, the rotating tray 2 is reset and then rotated again according to the above rules. The rotation of the rotating tray 2 is based on the original angle and only rotates 90 degrees to avoid large-angle rotation and entanglement of the delivery tubes connected to the reagent bottles. The support rod 4 supports the delivery tubes connected to the reagent bottles. The delivery tubes between the reagent bottles and the positioning plate 41 have sufficient volume to prevent the delivery tubes connected to the reagent bottles from getting tangled and affecting the rotation of the reagent bottles, and to prevent the delivery tubes from squeezing each other during rotation and affecting the smooth flow of the delivery tubes.

[0021] A bending compression piece 221 is fixedly connected to the top of the elastic limiting piece 22, and an inclined guide piece 222 is fixedly connected to the top of the bending compression piece 221. By setting the bending compression piece 221 to contact the reagent bottle, the elasticity of the elastic limiting piece 22 itself applies a force to the bending compression piece 221 to squeeze and limit the reagent bottle, and in conjunction with the inclined guide piece 222, it makes it easier for the staff to insert the reagent bottle into the center of the three elastic limiting pieces 22.

[0022] The bottom of the rotating tray 2 is fixedly connected to the mating plate 25; by setting the mating plate 25, it can cooperate with the limiting plate 1 32 and the limiting plate 2 33 to limit the rotation of the rotating tray 2, so as to avoid the rotating tray 2 from rotating excessively.

[0023] The bottom of the drive motor 3 is fixedly connected to a protective housing 31, and the bottom of the protective housing 31 is fixedly connected to the liquid chromatograph body 1. By setting the protective housing 31, installation space can be provided for the drive motor 3, the first limiting plate 32, the second limiting plate 33 and the controller 5, and at the same time, the drive motor 3, the first limiting plate 32, the second limiting plate 33 and the controller 5 can be protected.

[0024] Limiting plate 1 32 is fixedly connected to the inner wall of the bottom end of the protective storage compartment 31, and limiting plate 2 33 is fixedly connected to the inner wall of the bottom end of the protective storage compartment 31. Limiting plate 1 32 and limiting plate 2 33 are symmetrically distributed. The positions of limiting plate 1 32 and limiting plate 2 33 are offset to one side based on the center line of the protective storage compartment 31, so that when the mating plate 25 is in contact with limiting plate 1 32 and limiting plate 2 33, the rotating tray 2 is aligned with the edge of the protective storage compartment 31.

[0025] A positioning plate 41 is fixedly connected to the top of the support rod 4, and a clearance slot 42 is provided on the side wall of the positioning plate 41. By setting the positioning plate 41 and the clearance slot 42, the delivery tube of the reagent bottle can be limited and arranged, so as to avoid the delivery tube of the reagent bottle from becoming messy and tangled when the reagent bottle rotates.

[0026] A controller 5 is fixedly connected to the inner wall of the bottom of the protective containment chamber 31. The controller 5 is connected to four pressure sensors 23 and to the drive motor 3. By setting the controller 5, the drive motor 3 can be controlled to rotate according to the pressure signal of the pressure sensor 23.

[0027] The working principle and usage process of this utility model are as follows: The operator places four reagent bottles with added reagents on the top of the four reagent bottle support plates 21. The pressure sensor 23 weighs the reagent bottles and the reagents in them and sends the pressure signal to the controller 5. The controller 5 controls the drive motor 3 to rotate, which in turn drives the rotating tray 2 to rotate the reagent bottle with the least amount of reagent to the front of the equipment. Before using the liquid chromatograph, the operator can visually observe the remaining amount of reagent in the reagent bottle through the gap of the elastic limiting plate 22. When the reagent bottle with the least amount of reagent does not need to be added, the other reagent bottles do not need to be added. When reagent needs to be added, the reagent bottle has been rotated to a convenient position for the operator to add the reagent.

Claims

1. A liquid chromatograph characterized by: Including liquid chromatography body (1), the liquid chromatography body (1) is provided with rotating tray (2) above, the rotating tray (2) is provided with four reagent bottle support plates (21) that are uniformly distributed above, the reagent bottle support plate (21) top end is fixedly connected with three elastic limit sheets (22) that are uniformly distributed, the rotating tray (2) and the reagent bottle support plate (21) are fixedly connected with pressure sensor (23) between, the rotating tray (2) top end is fixedly connected with cross contrast color plate (24), the rotating tray (2) bottom end is fixedly connected with drive motor (3), the rotating tray (2) top end is fixedly connected with support rod (4).

2. The liquid chromatograph of claim 1, wherein: The elastic limit sheet (22) top end is fixedly connected with the bending extrusion sheet (221), and the bending extrusion sheet (221) top end is fixedly connected with the inclined guide sheet (222).

3. The liquid chromatograph of claim 1, wherein: The rotating tray (2) bottom end is fixedly connected with the matching plate (25).

4. The liquid chromatograph of claim 1, wherein: The drive motor (3) bottom end is fixedly connected with the protective containing bin (31), and the protective containing bin (31) bottom end is fixedly connected with the liquid chromatography body (1).

5. A liquid chromatograph according to claim 4, wherein: The bottom inner wall of the protective containing bin (31) is fixedly connected with a limiting plate one (32), and the bottom inner wall of the protective containing bin (31) is fixedly connected with a limiting plate two (33), the limiting plate one (32) and the limiting plate two (33) are symmetrically distributed.

6. The liquid chromatograph of claim 1, wherein: The support rod (4) top end is fixedly connected with the positioning disc (41), and the positioning disc (41) side wall is provided with the let go clamping groove (42).

7. The liquid chromatograph of claim 5, wherein: The bottom inner wall of the protective containing bin (31) is fixedly connected with the controller (5), the controller (5) is signal connected with four pressure sensors (23), and the controller (5) is signal connected with the drive motor (3).

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