Liquid storage device of liquid chromatograph

Abstract

The utility model relates to the technical field of chromatographic instrument accessories, in particular to a liquid storage device of a liquid chromatograph, which comprises a liquid storage table arranged at the top of the liquid chromatograph, the liquid storage table is provided with a placing groove with an open upper end, and the placing groove is used for providing a supporting and accommodating space for a liquid storage container; the top protection plate is connected with at least one side of the liquid storage table in a sliding manner and covers the upper part of the placement groove; the enclosure unit is arranged on the periphery of the liquid storage table in a surrounding mode, and the enclosure unit can stretch out and draw back in the vertical direction. Through the arrangement of the top protection plate, in the working process, the top protection plate can cover the top of the liquid storage table so as to protect a container filled with a mobile phase, interference of external factors on the container is reduced, and stability is improved; and through the cooperative arrangement of the threading hole and the bundling assembly, the pipelines connecting the pump body and the container can be bundled in a unified mode, a worker can conveniently comb the pipelines, and the overall attractiveness of the liquid storage device is improved.

Description

Technical Field

[0001] This application relates to the technical field of chromatograph accessories, and in particular to a liquid chromatograph storage device. Background Technology

[0002] A liquid chromatograph consists of several parts, including a reservoir, pump, injector, column, detector, and recorder. The mobile phase in the reservoir is pumped into the system by a high-pressure pump. The sample solution enters the mobile phase through the injector and is carried into the column. Because the components in the sample solution have different partition coefficients in the two phases, during relative motion, they undergo repeated adsorption-desorption processes, resulting in significant differences in their migration velocities. These components are separated into individual components that elute sequentially from the column. Upon passing through the detector, the sample concentration is converted into an electrical signal and transmitted to the recorder. Finally, the detection data is printed out in chromatographic form.

[0003] In related technologies, the liquid reservoir of a liquid chromatograph is generally installed directly at the top. Its main structure is a square platform. The container storing the mobile phase is placed directly on the platform. One end of the pipe connected to the high-pressure unit extends into the container, and the liquid transfer operation is completed under the action of the pump.

[0004] The problem with the related technology is that the structure of the placement platform is too simple, and most of the container is exposed to the external space. It is easily affected by the external environment, such as vibration or collision caused by human factors, which can affect the stability of the container and thus affect the infusion and subsequent testing process. In addition, depending on the properties of the mobile phase itself, some mobile phases may deteriorate when exposed to light, which will further affect the accuracy of the results. Utility Model Content

[0005] In order to improve the stability of the chromatograph during operation and reduce the possibility of mobile phase deterioration, this application provides a liquid storage device for a liquid chromatograph.

[0006] The liquid storage device for a liquid chromatograph provided in this application adopts the following technical solution:

[0007] A liquid storage device for a liquid chromatograph includes a storage platform disposed on top of the liquid chromatograph. The storage platform has an open placement groove at the top to provide support and storage space for the liquid storage container.

[0008] A top cover plate is slidably connected to at least one side of the liquid storage platform and covers the top of the placement tank;

[0009] A protective unit is installed around the liquid storage platform, and the protective unit can extend and retract in the vertical direction.

[0010] Optionally, the top plate has a connecting plate on the side that slides with the liquid storage platform, and a snap-fit ​​assembly is provided between the connecting plate and the liquid storage platform, the snap-fit ​​assembly being able to restrict the sliding of the connecting plate.

[0011] Optionally, the liquid storage platform and the connecting plate are respectively provided with a matching limiting part and a sliding part. The limiting part is recessed in the direction away from the connecting plate to form a guide groove. The sliding part is slidably disposed in the guide groove. The snap-fit ​​assembly is disposed between the limiting part and the sliding part.

[0012] Optionally, the snap-fit ​​assembly includes a plurality of slots formed on the limiting portion and an elastic buckle mounted on the sliding member. The plurality of slots are symmetrically distributed on both sides of the sliding member, and the multiple slots on the same side are spaced apart along the height direction of the limiting portion. The elastic buckle is configured to cooperate with the slots.

[0013] Optionally, the enclosure unit includes a flexible light-shielding part and an inner support frame. The flexible light-shielding part is sleeved on the outside of the inner support frame, and the inner support frame can extend and retract along the height direction of the liquid storage platform.

[0014] Optionally, the internal support frame includes uprights, crossbars, and connectors. The uprights are arranged around the liquid storage platform and their bottom ends are fixed to the liquid storage platform. The connectors are installed at the top of the uprights. The crossbars are connected to the uprights through the connectors. The uprights are multi-section telescopic rods.

[0015] Optionally, the bottom of the flexible light-shielding part is connected to the bottom end of the upright, and a sleeve hole is formed at the top. The extension direction of the sleeve hole is parallel to that of the crossbar, and the crossbar passes through the sleeve hole.

[0016] Optionally, the top plate is provided with a wire-passing hole, and a gathering assembly is provided on the side of the wire-passing hole near the placement slot. The gathering assembly includes a main body and a gathering ring. The main body is connected to the top plate in a ring shape, and the gathering ring is formed on the inner side of the main body. The gathering ring is configured to be openable and closable.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. By setting up the top cover, the top cover can cover the top of the liquid storage platform during operation to protect the container containing the mobile phase, reduce the interference of external factors on the container, and improve stability.

[0019] 2. The combination of threading holes and cable management components allows for the unified management of pipes connecting the pump body and container, making it easier for staff to manage and improving the overall aesthetics of the liquid storage device.

[0020] 3. By setting up the enclosure unit, the inner support frame can be raised during operation or storage to extend the flexible light-shielding part, thereby covering the outside of the placement tank, reducing the impact of light on the mobile phase inside the container, and reducing the possibility of mobile phase deterioration. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of an embodiment of this application.

[0022] Figure 2 This is a side view cross-sectional structural diagram of an embodiment of this application.

[0023] Figure 3 This is a top cross-sectional structural diagram of an embodiment of this application.

[0024] Figure 4 yes Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0025] Figure 5 yes Figure 2 Enlarged schematic diagram of the structure at point B.

[0026] Figure 6 yes Figure 3 Enlarged schematic diagram of the structure at point C.

[0027] Reference numerals: 1. Liquid storage platform; 11. Limiting part; 2. Top plate; 21. Connecting plate; 22. Sliding part; 3. Enclosure unit; 31. Flexible light-shielding part; 32. Internal support frame; 321. Upright pole; 322. Horizontal bar; 323. Connecting part; 4. Snap-fit ​​assembly; 41. Elastic buckle; 5. Threading hole; 6. Gathering assembly; 61. Main body; 62. Gathering ring. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0029] This application discloses a liquid storage device for a liquid chromatograph. (Refer to...) Figure 1 A liquid chromatograph storage device includes a storage platform 1 placed at the top of the main body of the chromatograph. The shape of the storage platform 1 corresponds to the shape of the main body of the chromatograph, preferably a rectangular structure with a certain height. The storage platform 1 is hollow inside and open at the top to form a placement groove. Multiple containers containing mobile phase can be placed side by side or in a matrix on the storage platform 1. It can be understood that in order to improve the stability of the containers placed on the storage platform 1, grooves adapted to the shape of the bottom of the containers can be opened on the storage platform 1 to limit the bottom of the containers.

[0030] With the front of the liquid chromatograph as the front of the reservoir 1, refer to... Figure 2 and Figure 3The back panel of the liquid storage platform 1 extends vertically upward, and two limiting parts 11 are provided on the back panel. The two limiting parts 11 are symmetrically distributed along the center line of the back panel. Both limiting parts 11 extend along the height direction of the back panel. The limiting parts 11 are configured to be recessed towards the side closer to the placement groove, thereby forming a guide groove extending along the height direction.

[0031] Correspondingly, a top plate 2 is provided above the liquid storage platform 1. A vertically extending connecting plate 21 is formed on the side of the top plate 2 near the back of the liquid storage platform 1. The connecting plate 21 is parallel to the back panel and closely abuts the outer side of the back panel. A sliding member 22 is provided on the side of the connecting plate 21 facing the back panel. The sliding member 22 is fixedly connected to the connecting plate 21 by welding or integral molding. In conjunction with the limiting part 11, two sliding members 22 are also provided. Both sliding members 22 are elongated and slidably disposed within the guide groove. It is understood that the length of the sliding member 22 should be much smaller than the length of the guide groove to allow the sliding member 22 sufficient range of motion. Through this structure, a sliding connection between the connecting plate 21 and the liquid storage platform 1 can be achieved.

[0032] Furthermore, the top plate 2 and the connecting plate 21 adopt an integrated connection structure. When the connecting plate 21 slides along the height direction of the liquid storage platform 1, the top plate 2 rises and falls accordingly, allowing the height between the top plate 2 and the liquid storage platform 1 to be flexibly adjusted. In actual use, initially, the top plate 2 is far away from the liquid storage platform 1, so that there is a certain height between them to facilitate the placement of containers by the staff. After the container is placed, the top plate 2 is pressed down to bring it closer to the top of the container, thereby reducing the contact between the container and the external environment and protecting the container.

[0033] Furthermore, a snap-fit ​​assembly 4 is provided between the connecting plate 21 and the liquid storage platform 1. Specifically, the snap-fit ​​assembly 4 includes several slots formed on the limiting part 11. The slots are divided into two groups and evenly distributed on both sides of the sliding member 22. The slots on the same side of the sliding member 22 are evenly distributed along the height direction of the limiting part 11. The snap-fit ​​assembly 4 also includes elastic buckles 41 provided on both sides of the sliding member 22 facing the slots. The elastic buckles 41 are configured to elastically deform in the direction of approaching or moving away from the slots.

[0034] Normally, when the elastic buckle 41 moves to the slot, it engages with the slot under its own elasticity, thus fixing the connecting plate 21 and the top plate 2. When the height needs to be adjusted, the operator can apply a sufficient external force to the top plate 2. The direction of this external force is the same as the height direction of the limiting part 11. After the external force is transmitted to the sliding part 22, the sliding part 22 tends to move along the guide groove. At this time, the elastic buckle 41 is squeezed against the limiting part 11, and the elastic buckle 41 is forced to deform and disengage from the slot. The operator can then adjust the top plate 2 up and down. After the adjustment is completed, the external force is removed, and the elastic buckle 41 can be re-engaged in the slot, fixing the position of the top plate 2.

[0035] Reference Figure 2 and Figure 4 A wire hole 5 is provided on the top plate 2. The wire hole 5 is preferably located in the middle of the top plate 2 and extends through the upper and lower end faces of the top plate 2 so that the pipe connecting the pump body to the container can pass through. The wire hole 5 can be used to initially tighten the pipe and improve the functionality of the liquid storage device.

[0036] Furthermore, a gathering assembly 6 is also provided on the side of the top plate 2 facing the placement slot, and the gathering assembly 6 corresponds to the position of the threading hole 5. Specifically, the gathering assembly 6 includes a main body 61 and gathering rings 62. The main body 61 is annular, and its center is on the same straight line as the center of the threading hole 5. Multiple gathering rings 62 are provided and evenly distributed on the inner side of the main body 61. The side of the gathering rings 62 away from the main body 61 has an opening. By making the gathering rings 62 with a deformable material, the opening can be opened when subjected to external pressure. Based on this principle, after the operator places the container on the liquid storage platform 1, the pipe is inserted through the threading hole 5 and pressed into the threading ring for fixation, and then the pipe is connected to the container.

[0037] Reference Figure 1 , Figure 2 and Figure 3 An enclosure unit 3 is also provided on the liquid storage platform 1. The enclosure unit 3 surrounds the placement tank and includes a flexible light-shielding cloth and an inner support frame 32. The flexible light-shielding cloth is fitted over the outer side of the inner support frame 32 to prevent the internal flowing phase of the container in the placement tank from being deteriorated due to light exposure.

[0038] Specifically, the internal support frame 32 includes uprights 321, connectors 323, and crossbars 322. There are four uprights 321, which are respectively located at the four corners of the placement slot. Each upright 321 extends along the height direction of the liquid storage platform 1. There are four connectors 323. The connectors 323 are L-shaped sleeve structures. The plane of the four connectors 323 is perpendicular to the uprights 321. Both ends of the crossbars 322 can be inserted into the connectors 323 to form the entire internal support frame 32.

[0039] The flexible light-shielding part 31 can be divided into three parts, corresponding to the three sides of the placement slot excluding the back panel. The bottom end of each flexible light-shielding part 31 is connected to the upright 321, and the top end has a sleeve hole. The crossbar 322 passes through the sleeve to connect the flexible light-shielding part 31 to the crossbar 322. It should be noted that, in order to improve the flexibility of the enclosure unit 3, the inner support frame 32 is preferably a telescopic structure. Specifically, the four uprights 321 can be multi-section telescopic rods. When the four uprights 321 extend and retract synchronously, the crossbar 322 rises and falls accordingly, thereby extending or retracting the flexible light-shielding part 31 to cover or expose the placement slot.

[0040] The implementation principle of a liquid chromatograph storage device according to an embodiment of this application is as follows: Initially, the top plate 2 is in the highest position and the flexible light-shielding part 31 is in a rolled-up state. The operator first places the container holding the mobile phase on the storage platform 1, and passes the pipe connected to the pump body through the wire hole 5 and fixes it on the coiling ring 62. Then, the pipe is inserted into the container to enable pumping of the mobile phase. After that, the operator presses the top plate 2 down to make it close to the top of the container. Finally, the inner support frame 32 is raised so that the flexible light-shielding part 31 extends to cover the placement slot. The mobile phase is then pumped into the chromatograph by a high-pressure pump to complete the subsequent operations.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A liquid storage device for a liquid chromatograph, characterized in that, include: A liquid storage platform (1) is set on top of the liquid chromatograph. The liquid storage platform (1) has a placement slot with an open top to provide support and storage space for the liquid storage container. The top plate (2) is slidably connected to at least one side of the liquid storage platform (1) and covers the top of the placement tank; The enclosure unit (3) is arranged around the liquid storage platform (1), and the enclosure unit (3) can extend and retract in the vertical direction.

2. The liquid storage device for a liquid chromatograph according to claim 1, characterized in that: The top plate (2) has a connecting plate (21) on one side that slides with the liquid storage platform (1). A snap-fit ​​assembly (4) is provided between the connecting plate (21) and the liquid storage platform (1). The snap-fit ​​assembly (4) can restrict the sliding of the connecting plate (21).

3. The liquid storage device for a liquid chromatograph according to claim 2, characterized in that: The liquid storage platform (1) and the connecting plate (21) are respectively provided with a matching limiting part (11) and a sliding part (22). The limiting part (11) is recessed in the direction away from the connecting plate (21) to form a guide groove. The sliding part (22) is slidably disposed in the guide groove. The snap-fit ​​assembly (4) is disposed between the limiting part (11) and the sliding part (22).

4. A liquid storage device for a liquid chromatograph according to claim 3, characterized in that: The snap-fit ​​assembly (4) includes a plurality of slots formed on the limiting part (11) and an elastic buckle (41) mounted on the sliding member (22). The plurality of slots are symmetrically distributed on both sides of the sliding member (22), and the plurality of slots located on the same side are spaced apart along the height direction of the limiting part (11). The elastic buckle (41) is configured to cooperate with the slots.

5. A liquid storage device for a liquid chromatograph according to claim 1, characterized in that: The enclosure unit (3) includes a flexible light-shielding part (31) and an inner support frame (32). The flexible light-shielding part (31) is sleeved on the outside of the inner support frame (32), and the inner support frame (32) can extend and retract along the height direction of the liquid storage platform (1).

6. A liquid storage device for a liquid chromatograph according to claim 5, characterized in that: The internal support frame (32) includes uprights (321), crossbars (322) and connectors (323). The uprights (321) are arranged around the liquid storage platform (1) and the bottom end is fixed on the liquid storage platform (1). The connectors (323) are installed on the top of the uprights (321). The crossbars (322) are connected to the uprights (321) through the connectors (323). The uprights (321) are multi-section telescopic rods.

7. A liquid storage device for a liquid chromatograph according to claim 6, characterized in that: The bottom of the flexible light-shielding part (31) is connected to the bottom end of the upright (321), and a sleeve hole is formed at the top. The extension direction of the sleeve hole is parallel to the crossbar (322), and the crossbar (322) passes through the sleeve hole.

8. A liquid storage device for a liquid chromatograph according to any one of claims 1-7, characterized in that: The top plate (2) is provided with a threading hole (5). A gathering component (6) is provided on the side of the threading hole (5) near the placement groove. The gathering component (6) includes a main body (61) and a gathering ring (62). The main body (61) is connected to the top plate (2) in a ring shape. The gathering ring (62) is formed on the inner side of the main body (61) and is configured to be openable and closable.

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