A liquid chromatograph for drug detection

Abstract

This utility model relates to the field of liquid chromatography technology and discloses a liquid chromatograph for drug detection, including a chromatograph body, a fixed platform fixedly installed on the right side of the chromatograph body, a pump fixedly installed on the top of the chromatograph body, a storage bottle set on the fixed platform, and a movable groove formed on the side wall of the fixed platform. This utility model allows for easy removal of the storage bottle by lifting a movable block, which moves the sampling tube out of the storage bottle. As the movable block moves upward, it moves a screw rod upward, which in turn drives a rotating gear to reverse. The rotating gear controls a first rack and a second rack, along with a first clamp and a second clamp, to release the storage bottle, allowing it to be removed from the fixed platform for convenient replacement. Pulling the sampling tube upward also automatically removes residual drug from its surface using a conical sleeve, eliminating the need for manual cleaning.

Description

Technical Field

[0001] This utility model relates to the field of liquid chromatography technology, and in particular to a liquid chromatograph for detecting pharmaceutical solutions. Background Technology

[0002] A liquid chromatograph is an instrument that uses the difference in the partition ratio of a mixture between a liquid and a solid or between two immiscible liquids to separate the mixture first, and then analyze and identify it.

[0003] An existing liquid chromatograph for drug detection (publication number: CN216955880U) has at least the following drawbacks: When it is necessary to change a specific drug solution, since all the extraction tubes are fixed to a single drainage tube, it is necessary to pull out the extraction tubes from all the drug bottles before replacement, which is very inconvenient. Furthermore, when replacing a drug bottle, the extraction tube may carry some drug solution with it when it is pulled out of the bottle. If it is directly inserted into the new drug bottle, it may affect the drug solution in the new bottle, requiring manual cleaning, which is very troublesome. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a liquid chromatograph for drug detection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A liquid chromatograph for drug detection includes a chromatograph body, a fixed stage fixedly installed on the right side of the chromatograph body, a pump fixedly installed on the top of the chromatograph body, a storage bottle disposed on the fixed stage, a movable groove formed on the side wall of the fixed stage, a movable block movably installed in the movable groove, a liquid sampling tube fixedly installed on the bottom right side of the movable block, a connecting tube fixedly installed on the top right side of the movable block, the liquid sampling tube and the connecting tube being connected, a delivery tube fixedly installed on the top of the connecting tube, and the other end of the delivery tube being connected to the extraction end of the pump.

[0006] As a further embodiment of this utility model, a limiting groove is formed on the side wall of the fixed platform. A first clamping block and a second clamping block are provided on the left and right sides of the limiting groove. The first clamping block and the second clamping block are movably installed in the limiting groove. A spiral rod is fixedly installed on the bottom left side of the movable block. A rotating gear is provided below the spiral rod. A first rack is provided on the left side of the rotating gear. The left end of the first clamping block is fixedly connected to the first rack. A second rack is provided on the right side of the rotating gear. The left end of the second clamping block is fixedly connected to the second rack. The first rack and the second rack mesh with the rotating gear.

[0007] As a further embodiment of this utility model, a spiral groove is provided in the middle position of the rotating gear, the bottom of the spiral rod can be movably sleeved between the spiral grooves, a fixing block is movably installed at the bottom of the rotating gear, and the fixing block is fixedly installed inside the fixing platform.

[0008] As a further embodiment of this utility model, a movable ring is movably installed on the top of the storage bottle, a fixed ring is provided in the movable ring, a conical sleeve is fixedly installed at the bottom of the fixed ring, a locking block is fixedly installed on the outer side of the fixed ring, and a locking groove is opened on the inner side of the movable ring, so that the locking block can be movably locked in the locking groove.

[0009] As a further embodiment of this utility model, a limiting block is fixedly installed on the side wall of the fixed platform. The limiting block has a groove, and the movable ring can be locked in the groove of the limiting block. The position of the limiting block is set according to the height of the bottle being stored.

[0010] As a further embodiment of this utility model, a gasket is fixedly installed on the opposing surfaces of the first clamping block and the second clamping block.

[0011] As a further embodiment of this utility model, the conical sleeve is made of elastic rubber.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, by lifting the movable block upwards, the movable block will move the liquid extraction tube out of the storage bottle. When the movable block moves upwards, it will drive the screw rod upwards. At this time, the screw rod will drive the rotating gear to reverse. The rotating gear will control the first rack and the second rack to loosen the storage bottle with the first clamp and the second clamp. Then the storage bottle can be removed from the fixed platform. After that, the storage bottle containing the new medicine can be installed on the fixed platform, thereby achieving the effect of conveniently replacing the storage bottle.

[0013] 2. In this utility model, when the movable block moves upward and drives the liquid extraction tube to move upward in the storage bottle, the conical sleeve at the mouth of the storage bottle will fit against the outside of the liquid extraction tube. When the liquid extraction tube is pulled upward, the conical sleeve will scrape off the residual liquid on the surface of the liquid extraction tube, eliminating the need for manual cleaning, thereby achieving the effect of automatically scraping off the residual liquid on the liquid extraction tube. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a liquid chromatograph for drug detection proposed in this utility model; Figure 2 This is a partial internal structural diagram of a liquid chromatograph for drug detection proposed in this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the component structure of a liquid chromatograph for drug detection proposed in this utility model.

[0015] In the diagram: 1. Chromatograph body; 2. Fixed stage; 3. Extraction pump; 4. Movable block; 5. Movable groove; 6. Liquid collection tube; 7. Connecting tube; 8. Storage bottle; 9. Delivery tube; 10. Limiting groove; 11. First clamping block; 12. Second clamping block; 13. Gasket; 14. Screw rod; 15. Limiting block; 16. Fixed block; 17. Rotating gear; 18. First rack; 19. Second rack; 20. Screw groove; 21. Movable ring; 22. Fixed ring; 23. Conical sleeve; 24. Clamping block; 25. Clamping groove. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Reference Figure 1 - Figure 4A liquid chromatograph for drug detection includes a chromatograph body 1, a fixed platform 2 fixedly installed on the right side of the chromatograph body 1, a pump 3 fixedly installed on the top of the chromatograph body 1, a storage bottle 8 provided on the fixed platform 2, a movable groove 5 opened on the side wall of the fixed platform 2, a movable block 4 movably installed in the movable groove 5, a liquid collection tube 6 fixedly installed on the bottom right side of the movable block 4, a connecting tube 7 fixedly installed on the top right side of the movable block 4, the liquid collection tube 6 and the connecting tube 7 are connected, a delivery tube 9 fixedly installed on the top of the connecting tube 7, and the other end of the delivery tube 9 is connected to the extraction end of the pump 3.

[0020] In this embodiment, a limiting groove 10 is provided on the side wall of the fixed platform 2. A first clamping block 11 and a second clamping block 12 are provided on the left and right sides of the limiting groove 10. The first clamping block 11 and the second clamping block 12 are movably installed in the limiting groove 10. A spiral rod 14 is fixedly installed on the bottom left side of the movable block 4. A rotating gear 17 is provided below the spiral rod 14. A first rack 18 is provided on the left side of the rotating gear 17. The left end of the first clamping block 11 is fixedly connected to the first rack 18. A second rack 19 is provided on the right side of the rotating gear 17. The left end of the second clamping block 12 is fixedly connected to the second rack 19. The first rack 18 and the second rack 19 mesh with the rotating gear 17. The rotating gear 17 will drive the first rack 18 and the second rack 19 on both sides to move. At this time, the first clamping block 11 and the second clamping block 12, which are fixedly connected to the first rack 18 and the second rack 19, will clamp the outside of the storage bottle 8.

[0021] In this embodiment, a spiral groove 20 is provided in the middle position of the rotating gear 17, and the bottom of the spiral rod 14 can be movably connected to the spiral groove 20. A fixing block 16 is movably installed at the bottom of the rotating gear 17. The fixing block 16 is fixedly installed inside the fixing platform 2. The top of the spiral rod 14 will be inserted into the spiral groove 20. As the spiral rod 14 continues to move downward, it will drive the rotating gear 17 to rotate.

[0022] In this embodiment, a movable ring 21 is movably installed on the top of the storage bottle 8. A fixed ring 22 is provided in the movable ring 21. A conical sleeve 23 is fixedly installed at the bottom of the fixed ring 22. A locking block 24 is fixedly installed on the outer side of the fixed ring 22. A locking groove 25 is opened on the inner side of the movable ring 21. The locking block 24 can be movably locked in the locking groove 25. The fixed ring 22 with the clean conical sleeve 23 is placed into the movable ring 21. The locking block 24 on the outer side of the fixed ring 22 is aligned with the locking groove 25 and locked in. Then the fixed ring 22 is rotated to fix the fixed ring 22 on the movable ring 21. The conical sleeve 23 is made of elastic rubber. When the liquid extraction tube 6 moves upward in the storage bottle 8, the conical sleeve 23 at the mouth of the storage bottle 8 will fit against the outer side of the liquid extraction tube 6. When the liquid extraction tube 6 is pulled upward, the conical sleeve 23 will scrape off the residual liquid on the surface of the liquid extraction tube 6.

[0023] In this embodiment, a limiting block 15 is fixedly installed on the side wall of the fixed platform 2. The limiting block 15 has a groove, and the movable ring 21 can be stuck in the groove of the limiting block 15. The position of the limiting block 15 is set according to the height of the storage bottle 8.

[0024] In this embodiment, a gasket 13 is fixedly installed on the opposite surfaces of the first clamping block 11 and the second clamping block 12.

[0025] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: In use, the liquid medicine is poured into the storage bottle 8, then the movable ring 21 is placed on the mouth of the storage bottle 8, and then the fixing ring 22 with the clean conical sleeve 23 is placed into the movable ring 21. The locking block 24 on the outside of the fixing ring 22 is aligned with the locking groove 25 and inserted. Then, the fixing ring 22 is rotated to fix it on the movable ring 21. At this time, the conical sleeve 23 will cover the mouth of the storage bottle 8. The storage bottle 8 is then moved to the fixed platform 2, so that the movable ring 21 is engaged in the groove of the limiting block 15 to position the storage bottle 8. Then, the movable block 4 is pressed down to allow the liquid to be dispensed from the movable block 4. The tube 6 moves downwards, passing through the conical sleeve 23 and entering the storage bottle 8. When the movable block 4 moves downwards, it drives the screw rod 14 downwards. The top of the screw rod 14 engages in the screw groove 20. As the screw rod 14 continues to move downwards, it drives the rotating gear 17 to rotate. The rotating gear 17 drives the first rack 18 and the second rack 19 on both sides to move. At this time, the first clamping block 11 and the second clamping block 12, which are fixedly connected to the first rack 18 and the second rack 19, clamp the outside of the storage bottle 8, fixing the storage bottle 8 on the fixed platform 2 to prevent the storage bottle 8 from shaking. Then, the extraction pump 3 is started through the chromatograph body 1. The delivery tube 9 connected to the extraction end of the extraction pump 3 can then extract the drug solution from the storage bottle 8 through the liquid extraction tube 6. When changing the medicine solution, lift the movable block 4 on the top of the storage bottle 8 to be replaced upwards. At this time, the movable block 4 will drive the liquid dispensing tube 6 to move out of the storage bottle 8. When the movable block 4 moves upwards, it will drive the screw rod 14 to move upwards. At this time, the screw rod 14 will drive the rotating gear 17 to reverse. The rotating gear 17 will control the first rack 18 and the second rack 19 to release the storage bottle 8 with the first clamping block 11 and the second clamping block 12. Then the storage bottle 8 can be removed from the fixed platform 2. Then the storage bottle 8 containing the new medicine solution can be installed on the fixed platform 2. It is very convenient.

[0026] When the dispensing tube 6 moves upward in the storage bottle 8, the conical sleeve 23 at the mouth of the storage bottle 8 will fit against the outside of the dispensing tube 6. When the dispensing tube 6 is pulled upward, the conical sleeve 23 will scrape off the residual medicine on the surface of the dispensing tube 6, eliminating the need for manual cleaning. By rotating the fixing ring 22, the locking block 24 can be removed from the locking groove 25, and the fixing ring 22 with the conical sleeve 23 can be separated from the movable ring 21. The used conical sleeve 23 can be collected and cleaned for reuse, which is very environmentally friendly.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid chromatograph for detecting a reagent solution, comprising a chromatograph main body (1), characterized by, A fixed platform (2) is fixedly installed on the right side of the chromatograph body (1), and a pump (3) is fixedly installed on the top of the chromatograph body (1). A storage bottle (8) is provided on the fixed platform (2). A movable groove (5) is opened on the side wall of the fixed platform (2). A movable block (4) is movably installed in the movable groove (5). A liquid collection tube (6) is fixedly installed on the bottom right side of the movable block (4). A connecting tube (7) is fixedly installed on the top right side of the movable block (4). The liquid collection tube (6) and the connecting tube (7) are connected. A delivery tube (9) is fixedly installed on the top of the connecting tube (7). The other end of the delivery tube (9) is connected to the extraction end of the pump (3).

2. The liquid chromatograph for detecting a drug solution according to claim 1, wherein A limiting groove (10) is provided on the side wall of the fixed platform (2). A first clamping block (11) and a second clamping block (12) are provided on the left and right sides of the limiting groove (10). The first clamping block (11) and the second clamping block (12) are movably installed in the limiting groove (10). A spiral rod (14) is fixedly installed on the bottom left side of the movable block (4). A rotating gear (17) is provided below the spiral rod (14). A first rack (18) is provided on the left side of the rotating gear (17). The left end of the first clamping block (11) is fixedly connected to the first rack (18). A second rack (19) is provided on the right side of the rotating gear (17). The left end of the second clamping block (12) is fixedly connected to the second rack (19). The first rack (18) meshes with the second rack (19) and the rotating gear (17).

3. The liquid chromatograph of claim 2, wherein, The rotating gear (17) has a spiral groove (20) in the middle position. The bottom of the spiral rod (14) can be movably connected between the spiral groove (20). A fixing block (16) is movably installed at the bottom of the rotating gear (17). The fixing block (16) is fixedly installed inside the fixing platform (2).

4. The liquid chromatograph of claim 1, wherein, The top of the storage bottle (8) is movably fitted with a movable ring (21), and a fixed ring (22) is provided in the movable ring (21). A conical sleeve (23) is fixedly installed at the bottom of the fixed ring (22), and a locking block (24) is fixedly installed on the outside of the fixed ring (22). A slot (25) is opened on the inside of the movable ring (21), and the locking block (24) can be movably locked in the slot (25).

5. The liquid chromatograph of claim 4 wherein, A limiting block (15) is fixedly installed on the side wall of the fixed platform (2). The limiting block (15) has a groove, and the movable ring (21) can be stuck in the groove of the limiting block (15). The position of the limiting block (15) is set according to the height of the storage bottle (8).

6. The liquid chromatograph of claim 2, wherein, A gasket (13) is fixedly installed on the opposite surfaces of the first clamping block (11) and the second clamping block (12).

7. The liquid chromatograph of claim 4 wherein, The conical sleeve (23) is made of elastic rubber.

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