Liquid chromatograph with sample bottle stabilizing structure

Abstract

The utility model discloses a liquid chromatograph with a sample bottle stabilizing structure, which relates to the technical field of liquid chromatographs, and comprises a liquid chromatograph main body, a sample introduction disc, a sample opening and a control cavity, a detection head is arranged in a movable seam in a sliding manner, a centering positioning part for preventing a sample bottle from shifting at the sample opening is arranged in a control groove, and the sample bottle stabilizing structure is arranged in the control cavity. A power part matched with the centering positioning part is arranged in the control cavity; through the arrangement of the centering and positioning parts and the power part, after the sample bottle is placed on the inner side of the sample opening, the power part acts on the overturning assemblies in the centering and positioning parts to synchronously operate, so that the control grooves synchronously overturn towards the inner side of the sample opening until the control grooves abut against the sample bottle; therefore, the sample bottle can be positioned and supported from multiple directions, the stability of the sample bottle in the sample opening is ensured, the sample bottle can be quickly pushed to the middle part of the inner cavity of the sample opening, and a detection head of a subsequent detection head can be smoothly inserted into the sample bottle.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid chromatographs, in particular to a liquid chromatograph with a sample bottle stable structure. Background Art

[0002] A liquid chromatograph is an instrument that utilizes the difference in the distribution ratio of a mixture between liquid and solid or between two immiscible liquids to separate the mixture first and then analyze and identify it. It is widely used in food testing. When using an existing liquid chromatograph, the sample to be tested is generally placed in a sample bottle in advance, and the sample bottle is transferred to a sample injection tray, and finally the sample injection tray is placed in the chromatograph detection chamber to facilitate the detection of the sample in the chromatograph.

[0003] However, in practice, the slots for placing sample bottles on the injection tray in the prior art have a fixed diameter, so that only sample bottles of a single size can be placed in the slots of the injection tray. Once the sample bottle is too small, it is very easy for a large gap to exist between the sample bottle and the inner wall of the slot after it is placed in the slot, causing the sample bottle to be easily offset when the injection tray is transferred and unable to be in the middle of the slot, so that the detection head in the detection chamber of the chromatograph cannot be aligned and inserted into the sample bottle, affecting the detection effect. Utility Model Content

[0004] In order to solve the above technical problems, a liquid chromatograph with a sample bottle stabilizing structure is provided, which solves the problem in the prior art that the slots on the sample tray for placing sample bottles have fixed diameters, so that only sample bottles of a single size can be placed in the slots of the sample tray.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a liquid chromatograph with a sample bottle stabilizing structure, comprising a liquid chromatograph body with an open end, a sample injection tray arranged in the open end of the liquid chromatograph body, and a plurality of sample ports opened on the sample injection tray for placing the test bottles, a carrying plate is slidably arranged above the open end of the liquid chromatograph body, a movable slit is transversely opened in the inner wall of the carrying plate, a detection head is slidably arranged in the movable slit, and also comprises a plurality of control cavities with circular cross-sections arranged in the inner wall of the sample injection tray, the sample port is located in the middle of the control cavity, a plurality of control grooves connected with the control cavity are opened on the inner wall of the sample port, a centering positioning component for preventing the sample bottle from deviating from the sample port is arranged in the control groove, and a power component cooperating with the centering positioning component is arranged in the control cavity;

[0006] The centering and positioning component includes a booster plate vertically arranged inside the control groove, a flip assembly is arranged at the top of the booster plate, and a plastic part is fixed at the bottom of the booster plate, and the plastic part is elliptical.

[0007] Preferably, the flip assembly includes a rotating column that is laterally rotatably arranged between the inner walls on both sides of the control groove and two rotating plates symmetrically fixed on the rotating column rod, and the rotating plates are vertically fixed to the top of the supercharging plate.

[0008] Preferably, the power component includes a transmission rod vertically rotatably arranged between the inner walls at both ends of the control chamber, a turbine sleeve is fastened and sleeved on the rod body of the transmission rod, and a turbine meshing with the turbine sleeve is also fastened and sleeved on the rod body of the rotating column.

[0009] Preferably, an internal gear disk is rotatably connected to the top surface of the sample feed disk, a transmission column is vertically fixed to the top end of the transmission rod, the end of the transmission column is inserted into the internal gear disk and is tightly sleeved with a transmission gear, and the transmission gear is meshed with the inner tooth surface of the internal gear disk.

[0010] Preferably, an anti-skid sleeve is fixedly sleeved on the outer wall of the inner gear disc, and the anti-skid sleeve is provided with anti-skid patterns.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] (1) By setting the centering and positioning components and the power components, after the sample bottle is placed inside the sample port, the power components are used to cause the flipping components in the centering and positioning components to operate synchronously, so that the multiple control slots are synchronously flipped toward the inside of the sample port until they collide with the sample bottle. In this way, the sample bottle can be positioned and supported from multiple directions to ensure the stability of the sample bottle in the sample port, and the sample bottle can be quickly pushed to the middle of the inner cavity of the sample port to ensure that the detection head of the subsequent detection head can be smoothly inserted into the sample bottle.

[0013] (2) Through the setting of the plastic part, when the pressure boosting plate is turned inwardly toward the sample port, the plastic part can directly contact the sample bottle, and then use its own flexible characteristics to appropriately reduce the squeezing force on the sample bottle, so as to prevent the pressure boosting plate from over-squeezing the sample bottle and causing damage to the sample bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the partial main structure of the sample feeding tray of the utility model;

[0017] Figure 4 This is a schematic diagram of the partial internal structure of the sample feeding tray of the utility model;

[0018] Figure 5 For this utility model Figure 4 Schematic diagram of the structure at point A in the middle.

[0019] The numbers in the figure are:

[0020] 1. Liquid chromatograph body; 2. Sample injection plate; 3. Sample port; 4. Loading plate; 5. Loading block; 6. Cylinder; 7. Detection head; 8. Motor; 9. Fixing plate; 10. Screw; 11. Control chamber; 12. Control slot; 13. Pressurization plate; 14. Rotating column; 15. Rotating plate; 16. Transmission rod; 17. Scroll sleeve; 18. Turbine; 19. Internal gear disc; 20. Transmission column; 21. Transmission gear; 22. Anti-slip sleeve. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] Reference Figure 1-5 As shown, a liquid chromatograph with a sample bottle stable structure comprises a liquid chromatograph body 1 with an open end, a sample injection tray 2 arranged in the open end of the liquid chromatograph body 1, and a plurality of sample ports 3 opened on the sample injection tray 2 for placing test bottles, a carrying plate 4 is slidably arranged above the open end of the liquid chromatograph body 1, a movable seam is transversely opened in the inner wall of the carrying plate 4, and a detection head 7 is slidably arranged in the movable seam;

[0023] A bearing block 5 is fixed on both sides of the liquid chromatograph body 1, and a cylinder 6 is vertically installed between the bearing block 5 and the bearing plate 4;

[0024] A fixing plate 9 is vertically fixed to one side of the top surface of the carrier plate 4, and a motor 8 is installed on the other side of the top surface of the carrier plate 4. A screw 10 is fixed to the output shaft of the motor 8. The end of the screw 10 is rotatably connected to the fixing plate 9. A nut seat fixed to the outer wall of the detection head 7 is threadedly connected to the rod of the screw 10.

[0025] When in use, the sample bottle containing the sample is placed in the sample port 3 on the sample injection plate 2 in advance, and then the motor 8 is turned on according to the position of the sample bottle to be tested, so that the screw 10 is carried by the threaded structure to slide the detection head 7 during the rotation of the fixing plate 9, so as to adjust the position of the detection head 7 until the detection head of the detection head 7 corresponds to the sample bottle, and then the cylinder 6 is started, and the telescopic rod of the cylinder 6 drives the supporting plate 4 and the detection head 7 to move downward as a whole, so that the detection head of the detection head 7 is aligned and inserted into the sample bottle, so as to facilitate the detection of the sample by the detection head 7.

[0026] However, in reality, the sample port 3 on the sample tray 2 for placing the sample bottle has a fixed diameter, so that the sample port 3 can only hold sample bottles of a single size. Once the sample bottle is too small, it is very easy for a large gap to exist between the sample bottle and the inner wall of the sample port 3 after the sample bottle is placed in the sample port 3, causing the sample bottle to be easily offset when the sample tray 2 is transferred and unable to be in the middle of the slot, so that the detection head 7 cannot be aligned and inserted into the sample bottle later, affecting the detection effect.

[0027] In view of this, refer to Figure 3 and Figure 4 As shown, it is worth noting that it also includes a plurality of control cavities 11 with a circular cross section arranged in the inner wall of the sample injection plate 2, the sample port 3 is located in the middle of the control cavity 11, and a plurality of control grooves 12 connected to the control cavity 11 are opened on the inner wall of the sample port 3, and a centering positioning component for preventing the sample bottle from shifting at the sample port 3 is arranged in the control groove 12, and a power component cooperating with the centering positioning component is arranged in the control cavity 11;

[0028] The centering and positioning component includes a booster plate 13 vertically arranged inside the control slot 12, and a flip assembly is arranged at the top of the booster plate 13;

[0029] By setting the centering and positioning components and the power components, after the sample bottle is placed inside the sample port 3, the power components are used to cause several flipping components in the centering and positioning components to operate synchronously, so that several control slots 12 are synchronously flipped toward the inside of the sample port 3 until they collide with the sample bottle. This can not only position and support the sample bottle from multiple directions to ensure the stability of the sample bottle in the sample port 3, but also quickly push the sample bottle to the middle of the inner cavity of the sample port 3 to ensure that the detection head of the subsequent detection head 7 can be smoothly inserted into the sample bottle.

[0030] Further, refer to Figure 5 As shown, it is worth noting that the flip assembly includes a rotating column 14 that is laterally rotated between the inner walls of both sides of the control slot 12 and two rotating plates 15 that are symmetrically fixed on the rod of the rotating column 14, and the rotating plates 15 are vertically fixed to the top of the supercharging plate 13;

[0031] The power component includes a transmission rod 16 which is vertically rotatably arranged between the inner walls at both ends of the control chamber 11, a vortex sleeve 17 is tightly sleeved on the rod body of the transmission rod 16, and a turbine 18 which meshes with the vortex sleeve 17 is also tightly sleeved on the rod body of the rotating column 14;

[0032] By rotating the transmission rod 16 in the control power component, the turbine sleeve 17 can engage with the turbine 18 during the rotation of the transmission rod 16, thereby providing rotational force for the rotor column 14, the rotor 15 and the supercharging plate 13 as a whole, so that the supercharging plate 13 is forced to flip toward the inside of the sample port 3.

[0033] Further, refer to Figure 5As shown, it is worth noting that a plastic part is fixed to the bottom end of the boost plate 13, and the plastic part is oval in shape;

[0034] By setting the plastic part, when the booster plate 13 flips inwardly toward the sample port 3, the plastic part can directly contact the sample bottle, and then use its own flexibility to appropriately reduce the squeezing force on the sample bottle to prevent the booster plate 13 from over-squeezing the sample bottle and causing damage to the sample bottle.

[0035] Further, refer to Figure 5 As shown, it is worth noting that an inner toothed disc 19 is rotatably connected to the top surface of the sample feeding disc 2, a transmission column 20 is vertically fixed to the top of the transmission rod 16, the end of the transmission column 20 penetrates into the inner toothed disc 19 and is tightly sleeved with a transmission gear 21, and the transmission gear 21 is meshed with the inner tooth surface of the inner toothed disc 19;

[0036] By rotating the inner gear disc 19 , the inner tooth surface of the inner gear disc 19 can mesh with the transmission gear 21 , thereby providing rotational force for 20 , the transmission rod 16 and the volute 17 as a whole.

[0037] Further, refer to Figure 5 As shown, it is worth noting that an anti-skid sleeve 22 is fixedly sleeved on the outer wall of the inner gear disc 19, and an anti-skid pattern is provided on the anti-skid sleeve 22;

[0038] By providing the anti-slip sleeve 22, the friction force of the hand of the operator can be increased when the inner gear disc 19 is manually rotated, thereby preventing slippage.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A liquid chromatograph with a sample bottle stabilizing structure, comprising a liquid chromatograph body (1) with an open end, a sample injection tray (2) arranged in the open end of the liquid chromatograph body (1), and a plurality of sample ports (3) opened on the sample injection tray (2) for placing test bottles, a carrying plate (4) slidably arranged above the open end of the liquid chromatograph body (1), a movable seam is transversely opened in the inner wall of the carrying plate (4), and a detection head (7) is slidably arranged in the movable seam, characterized in that: It also comprises a plurality of control cavities (11) with a circular cross section and arranged in the inner wall of the sample injection plate (2); the sample port (3) is located in the middle of the control cavity (11); a plurality of control grooves (12) connected to the control cavity (11) are opened on the inner wall of the sample port (3); a centering positioning component for preventing the sample bottle from deviating from the sample port (3) is arranged in the control groove (12); and a power component cooperating with the centering positioning component is arranged in the control cavity (11); The centering and positioning component comprises a booster plate (13) vertically arranged inside the control groove (12), a flip assembly is arranged at the top end of the booster plate (13), and a plastic part is fixed at the bottom end of the booster plate (13), and the plastic part is elliptical.

2. A liquid chromatograph with a sample bottle stabilizing structure according to claim 1, characterized in that: The flip assembly comprises a rotating column (14) which is laterally rotatably arranged between the inner walls on both sides of the control groove (12) and two rotating plates (15) which are symmetrically fixed on the rod body of the rotating column (14), and the rotating plates (15) are vertically fixed to the top end of the supercharging plate (13).

3. A liquid chromatograph with a sample bottle stabilizing structure according to claim 2, characterized in that: The power component comprises a transmission rod (16) which is vertically rotatably arranged between the inner walls at both ends of the control chamber (11); a vortex sleeve (17) is tightly sleeved on the rod body of the transmission rod (16); and a turbine (18) which meshes with the vortex sleeve (17) is also tightly sleeved on the rod body of the rotating column (14).

4. A liquid chromatograph with a sample bottle stabilizing structure according to claim 3, characterized in that: An inner toothed disc (19) is rotatably connected to the top surface of the sample feeding disc (2), a transmission column (20) is vertically fixed to the top end of the transmission rod (16), the end of the transmission column (20) penetrates into the inner toothed disc (19) and is tightly sleeved with a transmission gear (21), and the transmission gear (21) is meshed with the inner tooth surface of the inner toothed disc (19).

5. The liquid chromatograph with a sample bottle stabilizing structure according to claim 4, characterized in that: An anti-skid sleeve (22) is fixedly sleeved on the outer wall of the inner toothed disc (19), and the anti-skid sleeve (22) is provided with anti-skid patterns.

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