A sample injection device for a liquid chromatograph

Abstract

The utility model discloses a kind of sample introduction devices of liquid chromatograph, it is related to liquid chromatograph technical field, including base, the top of the base is fixedly connected with motor, the top of the motor is fixedly connected with detachable sample storage tray device, the top of one end of the base is fixedly connected with L type support bin, processing bin is fixedly connected with adjusting mechanism in the cavity of L type support bin, the bottom of one end of L type support bin is respectively fixedly connected with first electric push rod and pump body assembly.The base provided in the utility model is convenient to carry out feeding and detection under the basis of corresponding processing to liquid sample, and it is also convenient to disassemble and clean the filter mechanism, thereby solving the problem that the sample introduction device of existing liquid chromatograph lacks corresponding processing to liquid sample during conveying, and it is inconvenient to disassemble and clean the filter mechanism.

Description

Technical Field

[0001] This utility model relates to the field of liquid chromatography technology, specifically to an injection device for a liquid chromatograph. Background Technology

[0002] Liquid chromatography is used to analyze and measure the content of components in liquid samples. The sample passes through a detector flow cell placed in the optical path, the absorbance of light by the components in the sample is measured, and then converted into an electrical signal. After data processing, the content of the component is calculated.

[0003] Existing liquid chromatographs often suffer from uneven precipitation, bubble interference, high viscosity, and poor separation during sample delivery. Furthermore, the lack of corresponding auxiliary functions in these delivery devices not only leads to inaccurate injection volumes but also results in residues within the pipes and apparatus, contaminating subsequent samples and affecting analytical results. Additionally, while liquid chromatographs typically include filtration systems to prevent large particles from clogging the pump, these systems are difficult to disassemble and clean, and prolonged use can lead to blockages and compromise operational efficiency. Utility Model Content

[0004] In view of the problems existing in the sample injection device of the current liquid chromatograph, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a sample injection device for a liquid chromatograph, which solves the problems of existing liquid chromatograph sample injection devices lacking corresponding processing of liquid samples during transportation and being inconvenient to disassemble and clean the filter mechanism.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sample injection device for a liquid chromatograph includes a base, a motor fixedly connected to the top of the base, a detachable sample storage tray fixedly connected to the top of the motor, an L-shaped support chamber fixedly connected to the top of one end of the base, a processing chamber fixedly connected to the cavity of the L-shaped support chamber through an adjustment mechanism, and a first electric push rod and a pump assembly fixedly connected to the bottom of one end of the L-shaped support chamber.

[0008] One end of the first electric push rod is threadedly connected to a filter suction tube. The output end of the filter suction tube is fixedly connected to the input end of the pump body assembly. The input end of the processing chamber is fixedly connected to the output end of the pump body assembly. An ultrasonic generator assembly is fixedly connected to the top of the processing chamber. One end of the ultrasonic generator assembly passes through the side wall of the processing chamber and is fixedly connected to a vibrator. A vacuum pump is fixedly connected to the side wall of the processing chamber. A flow valve is fixedly connected to the bottom of the processing chamber. A sample delivery tube head is threadedly connected to the bottom of the flow valve. A temperature regulating jacket is fixedly connected to the outer wall of the processing chamber. A power supply mechanism fixedly connected to the temperature regulating jacket is provided inside the cavity of the base.

[0009] Preferably, the adjustment mechanism includes a second electric push rod, a sliding opening, and a sliding support arm. The top of the L-shaped support compartment is fixedly connected to the second electric push rod. The side wall of the L-shaped support compartment has a sliding opening and a sliding support arm is slidably connected thereto. The other end of the second electric push rod passes through the side wall of the L-shaped support compartment and is fixedly connected to the top of the sliding support arm. One end of the sliding support arm passes through the sliding opening and is fixedly connected to the side wall of the processing compartment.

[0010] Preferably, the power supply mechanism includes a hot air blower, a cold air blower, and a delivery hose. The hot air blower and the cold air blower are fixedly connected to both ends of the cavity of the base, and the output ends of the hot air blower and the cold air blower are fixedly connected to the delivery hose. The other end of the delivery hose is fixedly connected to the input end of the temperature regulating jacket.

[0011] Preferably, the detachable sample storage tray device includes a socket, a liquid storage tray is inserted into the top of the socket, and the liquid storage tray and the side wall of the socket are connected by a threaded opening and a limit bolt.

[0012] Furthermore, the filter suction tube includes a threaded seat end, the bottom of which is threadedly connected to a threaded tube end, and a filter screen layer is provided inside the cavity of the threaded seat end.

[0013] Preferably, the temperature regulating jacket is a hollow jacket, and the side wall has an exhaust hole.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model utilizes an ultrasonic generator and vibrator installed at the top of the processing chamber to improve the sample state through ultrasonic cavitation, thereby enhancing analytical accuracy. A vacuum pump installed on the side wall of the processing chamber is used to remove gas by vacuuming, avoiding interference from bubble peaks. A temperature regulating jacket installed on the outer wall of the processing chamber, in conjunction with the power supply mechanism, precisely controls the temperature to ensure that the sample is in the optimal analytical state, greatly improving analytical accuracy and repeatability.

[0016] 2. This utility model utilizes a detachable sample tray device installed on the top of the motor, which facilitates the cleaning of the sample tray by disassembly and separation. It also utilizes a filter suction pipe composed of a threaded seat end and a threaded tube end, which facilitates the disassembly and cleaning of impurities trapped in the filter screen layer, effectively avoiding the decline in filtration effect due to inconvenient cleaning and extending the service life of the equipment.

[0017] 3. This utility model utilizes an adjustment mechanism consisting of a second electric push rod, a sliding port, and a sliding support arm to flexibly adjust the height of the processing chamber, adapting to different working scenarios. The temperature regulating jacket, which is a hollow jacket with an exhaust hole, ensures efficient circulation of hot and cold air, accurately regulates the sample temperature, and improves operational convenience and work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a front sectional view of the present invention;

[0021] Figure 3 This is a cross-sectional schematic diagram of the processing chamber of this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of the filter suction tube of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Base; 2. Motor; 3. Detachable sample storage tray; 4. L-shaped support chamber; 5. Processing chamber; 6. First electric push rod; 7. Pump body assembly; 8. Filter suction tube; 9. Ultrasonic generating assembly; 10. Vibrator; 11. Vacuum pump; 12. Flow valve; 13. Sample delivery tube head; 14. Temperature regulating jacket; 15. Second electric push rod; 16. Sliding port; 17. Sliding support arm; 18. Hot air blower; 19. Cold air blower; 20. Delivery hose; 21. Socket; 22. Liquid storage tray; 23. Limit bolt; 24. Threaded seat end; 25. Threaded tube end; 26. Filter screen layer; 27. Exhaust port. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model discloses an injection device for a liquid chromatograph.

[0027] This utility model provides, for example Figure 1-4 The sample injection device of a liquid chromatograph shown includes a base 1, a motor 2 fixedly connected to the top of the base 1, a detachable sample storage tray device 3 fixedly connected to the top of the motor 2, an L-shaped support chamber 4 fixedly connected to the top of one end of the base 1, a processing chamber 5 fixedly connected to the cavity of the L-shaped support chamber 4 through an adjustment mechanism, and a first electric push rod 6 and a pump assembly 7 fixedly connected to the bottom of one end of the L-shaped support chamber 4 respectively.

[0028] One end of the first electric push rod 6 is threadedly connected to a filter suction tube 8. The output end of the filter suction tube 8 is fixedly connected to the input end of the pump body assembly 7. The input end of the processing chamber 5 is fixedly connected to the output end of the pump body assembly 7. An ultrasonic generator assembly 9 is fixedly connected to the top of the processing chamber 5. One end of the ultrasonic generator assembly 8 passes through the side wall of the processing chamber 5 and is fixedly connected to a vibrator 10. A vacuum pump 11 is fixedly connected to the side wall of the processing chamber 5. A flow valve 12 is fixedly connected to the bottom of the processing chamber 5. A sample delivery tube head 13 is threadedly connected to the bottom of the flow valve 12. A temperature regulating jacket 14 is fixedly connected to the outer wall of the processing chamber 5. A power supply mechanism, fixedly connected to the temperature regulating jacket 14, is located inside the cavity of the base 1. The ultrasonic generator 9, located at the top of the processing chamber 5, works in conjunction with the vibrator 10 to perform ultrasonic treatment on the sample. Through the cavitation effect of ultrasound, agglomerates in the sample can be broken up, dissolution promoted, and chemical reactions accelerated, making the sample state more suitable for subsequent chromatographic analysis and improving the accuracy and reliability of the analytical results. Simultaneously, a vacuum pump 11 on the side wall of the processing chamber 5 can perform vacuum treatment on the sample. To remove gases from the sample and prevent them from interfering with liquid chromatography analysis, such as producing bubble peaks, the temperature control jacket 14 on the outer wall of the processing chamber 5 works in conjunction with the power supply mechanism inside the base 1 to precisely control the sample temperature. Temperature has a significant impact on many chemical reactions and the physical properties of the sample. Precise temperature control ensures that the sample is analyzed under optimal conditions, further improving the accuracy and repeatability of the analysis. The motor 2, which is threadedly connected to the top of the base 1, and the detachable sample storage tray 3 make the entire sample storage tray easy to disassemble. The detachable sample storage tray 3 corresponds to the position of the sample injection filter suction tube 8. The liquid sample can be aspirated from the detachable sample storage tray 3 through the filter suction tube 8 for injection. The filter suction tube 8 has a filter mechanism inside its cavity, which can be disassembled to clean the impurities filtered out. The flow valve 12 allows for precise control of the feed rate, thus solving the problem that existing liquid chromatographs lack corresponding liquid sample processing during the delivery process and are inconvenient to disassemble for cleaning the filter mechanism.

[0029] In order to adjust the height of processing chamber 5, such as Figure 1 and 2 As shown, the adjustment mechanism includes a second electric push rod 15, a sliding opening 16, and a sliding support arm 17. The top of the L-shaped support chamber 4 is fixedly connected to the second electric push rod 15. The side wall of the L-shaped support chamber 4 has a sliding opening 16, and the sliding support arm 17 is slidably connected thereto. The other end of the second electric push rod 15 passes through the side wall of the L-shaped support chamber 4 and is fixedly connected to the top of the sliding support arm 17. One end of the sliding support arm 17 passes through the sliding opening 16 and is fixedly connected to the side wall of the processing chamber 5. By using the adjustment mechanism composed of the second electric push rod 15, the sliding opening 16, and the sliding support arm 17, the second electric push rod 15 pushes the sliding support arm 17 to slide up and down in the sliding opening 16, thereby causing the sliding support arm 17 to move the processing chamber 5 at one end up and down to adjust the height.

[0030] To provide hot and cold air sources for the 14 temperature regulating jackets, such as Figure 1 and 2 As shown, the power supply mechanism includes a hot air blower 18, a cold air blower 19, and a delivery hose 20. The hot air blower 18 and the cold air blower 19 are fixedly connected to both ends of the cavity of the base 1, respectively. The output ends of the hot air blower 18 and the cold air blower 19 are both fixedly connected to the delivery hose 20. The other end of the delivery hose 20 is fixedly connected to the input end of the temperature regulating jacket 14. By using the power supply mechanism composed of the hot air blower 18, the cold air blower 19, and the delivery hose 20, hot air and cold air sources are provided to the temperature regulating jacket 14 through the hot air blower 18, the cold air blower 19, and their respective delivery hoses 20.

[0031] In order to enable the detachable sample storage tray device 3 to achieve the function of disassembly and separation, such as Figure 1 and 2 As shown, the detachable sample storage tray device 3 includes a socket 21, with a liquid storage tray 22 inserted into the top of the socket 21. The side walls of the liquid storage tray 22 and the socket 21 are connected by threaded openings and threaded connections with limit bolts 23. By using the detachable sample storage tray device 3, which consists of a socket 21, a liquid storage tray 22 and limit bolts 23, quick installation can be achieved by inserting the liquid storage tray 22 into the socket 21 and threading the limit bolts 23. It is also convenient to directly separate the liquid storage tray 22 by rotating and removing the limit bolts 23, and clean the sample residue on the surface.

[0032] In order to remove and clean the impurities filtered out, such as Figure 1 , 2As shown in Figure 4, the filter suction tube 8 includes a threaded seat end 24, and a threaded tube end 25 is threadedly connected to the bottom of the threaded seat end 24. A filter screen layer 26 is provided inside the cavity of the threaded seat end 24. By using the filter suction tube 8 composed of the threaded seat end 24, the threaded tube end 25 and the filter screen layer 26, and the threaded connection between the threaded seat end 24 and the threaded tube end 25, it is not only easy to install but also easy to disassemble to discharge and clean the impurities filtered by the filter screen layer 26.

[0033] To facilitate the circulation of hot and cold air within the cavity, such as Figure 1-3 As shown, the temperature regulating jacket 14 is a hollow jacket with an exhaust hole 27 on its side wall. The use of the temperature regulating jacket 14, which is a hollow jacket with an exhaust hole 27 on its side wall, facilitates the flow of hot and cold air in the cavity to heat or cool the liquid sample inside the processing chamber 5. The hot and cold air after heat exchange is discharged through the exhaust hole 27.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sample injection device for a liquid chromatograph, comprising a base (1), characterized in that, A motor (2) is fixedly connected to the top of the base (1), a detachable sample storage tray device (3) is fixedly connected to the top of the motor (2), an L-shaped support chamber (4) is fixedly connected to the top of one end of the base (1), a processing chamber (5) is fixedly connected to the cavity of the L-shaped support chamber (4) through an adjustment mechanism, and a first electric push rod (6) and a pump assembly (7) are fixedly connected to the bottom of one end of the L-shaped support chamber (4). One end of the first electric push rod (6) is threadedly connected to a filter suction tube (8). The output end of the filter suction tube (8) is fixedly connected to the input end of the pump body assembly (7). The input end of the processing chamber (5) is fixedly connected to the output end of the pump body assembly (7). An ultrasonic generating assembly (9) is fixedly connected to the top of the processing chamber (5). One end of the ultrasonic generating assembly (9) passes through the side wall of the processing chamber (5) and is fixedly connected to a vibrator (10). A vacuum pump (11) is fixedly connected to the side wall of the processing chamber (5). A flow valve (12) is fixedly connected to the bottom of the processing chamber (5). A sample delivery tube head (13) is threadedly connected to the bottom of the flow valve (12). A temperature regulating jacket (14) is fixedly connected to the outer wall of the processing chamber (5). A power supply mechanism fixedly connected to the temperature regulating jacket (14) is provided in the cavity of the base (1).

2. The sample injection device for a liquid chromatograph according to claim 1, characterized in that, The adjustment mechanism includes a second electric push rod (15), a sliding opening (16), and a sliding support arm (17). The top of the L-shaped support chamber (4) is fixedly connected to the second electric push rod (15). The side wall of the L-shaped support chamber (4) is provided with a sliding opening (16) and is slidably connected to the sliding support arm (17). The other end of the second electric push rod (15) passes through the side wall of the L-shaped support chamber (4) and is fixedly connected to the top of the sliding support arm (17). One end of the sliding support arm (17) passes through the sliding opening (16) and is fixedly connected to the side wall of the processing chamber (5).

3. The sample injection device for a liquid chromatograph according to claim 1, characterized in that, The power supply mechanism includes a hot air blower (18), a cold air blower (19), and a delivery hose (20). The hot air blower (18) and the cold air blower (19) are fixedly connected to both ends of the cavity of the base (1). The output ends of the hot air blower (18) and the cold air blower (19) are fixedly connected to the delivery hose (20). The other end of the delivery hose (20) is fixedly connected to the input end of the temperature regulating jacket (14).

4. The sample injection device for a liquid chromatograph according to claim 1, characterized in that, The detachable sample storage tray device (3) includes a socket (21), a liquid storage tray (22) is inserted into the top of the socket (21), and the side walls of the liquid storage tray (22) and the socket (21) are connected by threaded openings and threaded connections with limit bolts (23).

5. The sample injection device for a liquid chromatograph according to claim 1, characterized in that, The filter suction tube (8) includes a threaded seat end (24), the bottom of which is threadedly connected to a threaded tube end (25), and a filter screen layer (26) is provided inside the cavity of the threaded seat end (24).

6. The sample injection device for a liquid chromatograph according to claim 1, characterized in that, The temperature regulating jacket (14) is a hollow jacket, and an exhaust hole (27) is provided on the side wall.

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