Positioning structure of high performance liquid chromatograph

Abstract

The utility model discloses a positioning structure of a high performance liquid chromatograph, which relates to the technical field of liquid chromatographs and comprises a chromatographic instrument main body, a base is arranged at the top of the chromatographic instrument main body, a bracket is fixedly arranged at the top of the base, a plurality of first sliding chutes which are transversely arranged and are in a vertical state are formed in the side part of the bracket, and a plurality of second sliding chutes are formed in the side part of the bracket. A positioning and clamping assembly is arranged in the first sliding groove, the positioning and clamping assembly comprises a movable sliding frame, clamping blocks and a supporting clamping ring, the movable sliding frame is connected with the first sliding groove in a sliding fit mode, a second sliding groove in a horizontal state is formed in the side portion of the movable sliding frame, and the two clamping blocks are arranged in the second sliding groove in a relatively sliding mode; the supporting clamping ring is fixedly arranged at the bottom of the movable sliding frame. The positioning and clamping assembly can tightly clamp solvent bottles of different sizes through sliding adjustment of a movable sliding frame and a clamping block, the stability of the solvent bottles in the operation process is ensured, and solvent leakage and instrument damage caused by falling or shaking are prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid chromatographs, and specifically to a positioning structure for a high performance liquid chromatograph. Background Technology

[0002] High-performance liquid chromatography (HPLC) is an instrument that utilizes the difference in the partition ratio of a mixture between a liquid and a solid or between two immiscible liquids to separate the mixture before analysis and identification. Its principle is to use a liquid as the mobile phase, employing a high-pressure delivery system to pump a single solvent or a mixture of solvents or buffer solutions with different polarities into a chromatographic column packed with a stationary phase. After the components are separated within the column, they enter the detector for detection, thus enabling the analysis of the sample. In current technology, HPLC systems are typically constructed using a stacked (also known as modular or layered) assembly, meaning they are stacked from top to bottom according to the flow path direction. Therefore, solvent bottles are often placed on top of the HPLC system.

[0003] When changing solvents or adjusting the position of solvent bottles, they are easily tipped over due to improper operation or external interference. A tipped solvent bottle can lead to solvent leakage, which can contaminate the experimental environment and cause corrosion or damage to instruments. Furthermore, solvent bottles are usually placed with the opening facing upwards, and solvent is drawn by inserting a tube into the bottle. This placement method makes it difficult to effectively utilize the solvent at the bottom of the bottle, resulting in solvent waste. This is especially noticeable when the solvent bottle is nearly empty, as the amount of solvent remaining at the bottom is even more significant. Utility Model Content

[0004] The purpose of this invention is to provide a positioning structure for a high-performance liquid chromatograph (HPLC) to solve the problem in existing technologies where solvent bottles are easily tipped over due to improper operation or external interference when changing solvents or adjusting their position. Tipped solvent bottles can lead to solvent leakage.

[0005] The technical problem to be solved by this utility model can be achieved through the following technical solution: a positioning structure for a high performance liquid chromatograph, including a chromatograph body, a base on the top of the chromatograph body, a bracket fixedly mounted on the top of the base, a plurality of horizontally arranged and vertically positioned first sliding grooves on the side of the bracket, a positioning clamping assembly in the first sliding groove, the positioning clamping assembly including a movable slide, clamping blocks and a support ring, the movable slide being slidably connected to the first sliding groove, a horizontally positioned second sliding groove on the side of the movable slide, two clamping blocks being slidably mounted relative to each other in the second sliding groove, and the support ring being fixedly mounted at the bottom of the movable slide.

[0006] As a further embodiment of this utility model: the support retaining ring includes a vertical rod, a connecting seat, a horizontal rod, and a support ring. The vertical rod is fixedly connected to the movable slide, and the outer side of the vertical rod is threaded. The connecting seat has a vertical rotating groove that mates with the thread of the vertical rod. One end of the horizontal rod is connected to the connecting seat, and the other end of the horizontal rod is connected to the support ring. The outer side of the horizontal rod is threaded, and the connecting seat has a horizontal rotating groove that mates with the thread of the horizontal rod.

[0007] As a further embodiment of this invention, the positioning and clamping assembly also includes an adjusting screw, which is rotatably disposed within the first slide groove. The movable slide has a through hole that threadedly engages with the adjusting screw. The positioning and clamping assembly also includes an adjusting handwheel, which is coaxially and fixedly connected to the adjusting screw.

[0008] As a further embodiment of this utility model, the positioning and clamping assembly also includes a support spring, which is disposed in the second slide groove. One end of the support spring is fixedly connected to the clamping block, and the other end of the support spring is fixedly connected to the movable slide.

[0009] As a further embodiment of this invention: an arc-shaped clamping groove is provided on the side of the clamping block. An anti-slip pad is fixedly installed inside the arc-shaped clamping groove.

[0010] As a further embodiment of this invention: a plurality of foot pads arranged in a matrix are fixedly provided on the bottom of the base. The foot pads are made of rubber.

[0011] The advantages of this utility model compared to the prior art are:

[0012] 1. By sliding the movable carriage within the first slide groove, the height of the positioning and clamping assembly can be adjusted vertically to accommodate solvent bottles of different heights. Depending on the diameter of the solvent bottle, the relative positions of the two clamping blocks within the second slide groove are slid to tightly clamp the sides of the solvent bottle. This provides stable horizontal support for the solvent bottle, preventing it from tipping over or shaking.

[0013] 2. By inverting the solvent bottle and using a positioning clamping assembly for stable support, this structure ensures that solvent is effectively drawn from the bottom of the bottle, reducing solvent waste at the bottom as in traditional methods. The positioning clamping assembly, through the sliding adjustment of the movable carriage and clamping blocks, can tightly clamp solvent bottles of different sizes, ensuring stability during operation and preventing solvent leakage and instrument damage caused by tipping or shaking. This structure is suitable for solvent bottles of various sizes and shapes, and can be easily adapted to different solvent bottles through simple sliding adjustments, improving flexibility and convenience of use.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a three-dimensional structural diagram of the positioning structure of a high-performance liquid chromatograph.

[0017] Figure 2 This is a three-dimensional structural diagram of the positioning and clamping component in this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the foot pad in this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the clamping block in this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the supporting retaining ring in this utility model.

[0021] The reference numerals in the figures include:

[0022] 1. Chromatograph body; 2. Base; 3. Support; 4. First slide groove; 5. Positioning and clamping assembly; 6. Movable slide; 7. Clamping block; 8. Support ring; 9. Second slide groove; 10. Vertical rod; 11. Connecting seat; 12. Horizontal rod; 13. Vertical rotating groove; 14. Horizontal rotating groove; 15. Adjusting screw; 16. Adjusting handwheel; 17. Support spring; 18. Arc-shaped clamping groove; 19. Foot pad; 20. Support ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 5As shown, a positioning structure for a high-performance liquid chromatograph includes a chromatograph body 1, a base 2 on the top of the chromatograph body 1, a bracket 3 fixedly mounted on the top of the base 2, and several horizontally arranged and vertically positioned first sliding grooves 4 on the side of the bracket 3. A positioning clamping assembly 5 is disposed in the first sliding groove 4. The positioning clamping assembly 5 includes a movable slide 6, clamping blocks 7, and a support ring 8. The movable slide 6 is slidably connected to the first sliding groove 4. A horizontal second sliding groove 9 is opened on the side of the movable slide 6. Two clamping blocks 7 are slidably disposed in the second sliding groove 9. The support ring 8 is fixedly disposed at the bottom of the movable slide 6.

[0025] Place the solvent bottle with the opening facing downwards, and insert the bottle neck into the support ring 8. This inverted position allows the solvent to be drawn from the bottom of the bottle, solving the problem of inefficient utilization of solvent at the bottom in traditional methods. Specifically, the solvent drawing tube is connected to the cap of the solvent bottle. Because the solvent bottle is inverted, the tube can easily reach the solvent at the bottom. When solvent is drawn, the tube starts drawing from the bottom of the bottle, ensuring that all solvent in the bottle is effectively utilized and reducing waste.

[0026] To maintain consistent pressure inside and outside the inverted solvent bottle when drawing solvent through the tubing, a dual-tube structure can be considered. One tube draws the solvent, while the other serves as a venting tube to maintain pressure balance. Specifically, one end of the solvent-drawing tube is connected to the bottle opening, and the other end of the venting tube is inserted into the solvent bottle, above the solvent level.

[0027] By sliding the movable carriage 6 within the first slide groove 4, the height of the positioning clamping assembly 5 can be adjusted vertically to accommodate solvent bottles of different heights. Depending on the diameter of the solvent bottle, the relative positions of the two clamping blocks 7 within the second slide groove 9 are slid to tightly clamp the sides of the solvent bottle. This provides stable horizontal support for the solvent bottle, preventing it from tipping over or shaking.

[0028] By inverting the solvent bottle and using the positioning clamping assembly 5 for stable support, this structure ensures that the solvent is effectively drawn from the bottom of the bottle, reducing the waste of solvent at the bottom of the bottle as in traditional methods. The positioning clamping assembly 5, through the sliding adjustment of the movable slide 6 and the clamping block 7, can tightly clamp solvent bottles of different sizes, ensuring stability during operation and preventing solvent leakage and instrument damage caused by tipping or shaking. This structure is suitable for solvent bottles of various sizes and shapes, and can be adapted to different solvent bottles through simple sliding adjustments, improving the flexibility and convenience of use.

[0029] refer to Figure 5As shown, in some specific embodiments, the support ring 8 includes a vertical rod 10, a connecting seat 11, a horizontal rod 12, and a support ring 20. The vertical rod 10 is fixedly connected to the movable slide 6, and the outer side of the vertical rod 10 is threaded. The connecting seat 11 has a vertical rotating groove 13 that mates with the threaded vertical rod 10. One end of the horizontal rod 12 is connected to the connecting seat 11, and the other end of the horizontal rod 12 is connected to the support ring 20. The outer side of the horizontal rod 12 is threaded, and the connecting seat 11 has a horizontal rotating groove 14 that mates with the threaded horizontal rod 12.

[0030] The vertical rod 10 and the connecting seat 11 are threaded together, allowing for vertical adjustment of the horizontal rod 12 and the support ring 20. The horizontal rod 12 and the connecting seat 11 are threaded together, allowing for horizontal adjustment of the support ring 20. This adapts to solvent bottle necks of different sizes and shapes, thus improving the stability and adaptability of the positioning structure.

[0031] refer to Figure 2 As shown, in some specific embodiments, the positioning and clamping assembly 5 further includes an adjusting screw 15, which is rotatably disposed within the first slide groove 4. The movable slide 6 has a through hole that threadedly engages with the adjusting screw 15. The positioning and clamping assembly 5 also includes an adjusting handwheel 16, which is coaxially and fixedly connected to the adjusting screw 15. The user can drive the adjustment screw 15 to rotate by rotating the adjusting handwheel 16, thereby controlling the up-and-down movement of the movable slide 6 and the positioning and clamping assembly 5. That is, when the adjusting screw 15 rotates, due to the self-locking and transmission characteristics of the thread, the movable slide 6 will move up and down along the adjusting screw 15.

[0032] refer to Figure 2 As shown, in some specific embodiments, the positioning and clamping assembly 5 further includes a support spring 17, which is disposed within the second slide groove 9. One end of the support spring 17 is fixedly connected to the clamping block 7, and the other end is fixedly connected to the movable slide 6. Because the support spring 17 has a certain degree of elasticity, the clamping block 7 can adapt to solvent bottles of different sizes and shapes to a certain extent. When the size or shape of the solvent bottle changes, the support spring 17 can adapt to this change through deformation, thereby ensuring that the clamping block 7 can tightly clamp the solvent bottle.

[0033] refer to Figure 4As shown, in some specific embodiments, the clamping block 7 has an arc-shaped clamping groove 18 on its side. The arc-shaped clamping groove 18 allows the clamping block 7 to better adapt to the contour of the solvent bottle, especially those with curved shapes. This reduces the gap between the clamping block 7 and the solvent bottle, thereby improving the stability and firmness of the clamping. An anti-slip pad is fixedly installed inside the arc-shaped clamping groove 18. The anti-slip pad is typically made of a material with a high coefficient of friction, such as rubber, silicone, or polyurethane. The anti-slip pad increases the friction between the clamping block 7 and the solvent bottle, preventing the solvent bottle from slipping off due to shaking during suction. The soft material of the anti-slip pad reduces wear and scratches on the surface of the solvent bottle caused by the clamping block 7. This helps extend the service life of the solvent bottle and reduces the risk of solvent leakage due to bottle damage.

[0034] refer to Figure 3 As shown, in some specific embodiments, a plurality of foot pads 19 arranged in a matrix are fixedly disposed on the bottom of the base 2. The foot pads 19 are small protrusions fixed to the bottom of the base 2, and their main function is to increase the friction between the base 2 and the surface of the chromatograph body 1, preventing the base 2 from sliding, and also reducing wear on the surface of the chromatograph body 1 to a certain extent. The foot pads 19 are made of rubber. Rubber has good wear resistance and can maintain the shape and size of the foot pads 19 for a long time, thereby extending the service life of the base 2.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A positioning structure for a high-performance liquid chromatograph, characterized in that, The chromatograph includes a chromatograph body (1), a base (2) is provided on the top of the chromatograph body (1), a bracket (3) is fixedly provided on the top of the base (2), and a number of horizontally arranged and vertically positioned first slide grooves (4) are provided on the side of the bracket (3). A positioning clamping assembly (5) is provided in the first slide groove (4). The positioning clamping assembly (5) includes a movable slide (6), clamping blocks (7) and a support ring (8). The movable slide (6) is slidably connected to the first slide groove (4). A horizontal second slide groove (9) is provided on the side of the movable slide (6). Two clamping blocks (7) are slidably disposed in the second slide groove (9). The support ring (8) is fixedly disposed at the bottom of the movable slide (6).

2. The positioning structure of a high-performance liquid chromatograph according to claim 1, characterized in that, The support ring (8) includes a vertical rod (10), a connecting seat (11), a horizontal rod (12), and a support ring (20). The vertical rod (10) is fixedly connected to the movable slide (6), and the outside of the vertical rod (10) is threaded. The connecting seat (11) has a vertical rotating groove (13) that is threaded to the vertical rod (10). One end of the horizontal rod (12) is connected to the connecting seat (11), and the other end of the horizontal rod (12) is connected to the support ring (20).

3. The positioning structure of a high-performance liquid chromatograph according to claim 2, characterized in that, The horizontal rod (12) has a thread on its outer side, and the connecting seat (11) has a horizontal rotating groove (14) that engages with the thread of the horizontal rod (12).

4. The positioning structure of a high-performance liquid chromatograph according to claim 1, characterized in that, The positioning and clamping assembly (5) also includes an adjusting screw (15), which is rotatably disposed in the first slide groove (4), and the movable slide (6) has a through hole that is threadedly engaged with the adjusting screw (15).

5. The positioning structure of a high-performance liquid chromatograph according to claim 4, characterized in that, The positioning clamping assembly (5) also includes an adjusting handwheel (16), which is coaxially and fixedly connected to the adjusting screw (15).

6. The positioning structure of a high-performance liquid chromatograph according to claim 1, characterized in that, The positioning clamping assembly (5) also includes a support spring (17), which is disposed in the second slide groove (9). One end of the support spring (17) is fixedly connected to the clamping block (7), and the other end of the support spring (17) is fixedly connected to the movable slide (6).

7. The positioning structure of a high-performance liquid chromatograph according to claim 1, characterized in that, The clamping block (7) has an arc-shaped clamping groove (18) on its side.

8. The positioning structure of a high-performance liquid chromatograph according to claim 7, characterized in that, An anti-slip pad is fixedly installed inside the arc-shaped clamping groove (18).

9. The positioning structure of a high-performance liquid chromatograph according to claim 1, characterized in that, The bottom of the base (2) is fixedly provided with several foot pads (19) arranged in a matrix.

10. The positioning structure of a high-performance liquid chromatograph according to claim 9, characterized in that, The foot pad (19) is made of rubber.

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