Liquid sample introduction device of infrared spectrometer

Abstract

The utility model relates to the technical field of liquid sample introduction, in particular to an infrared spectrometer liquid sample introduction device which comprises a protective shell internally provided with a liquid conveying lever and a liquid conveying lever internally provided with a vacuum flow guide pipe, a liquid storage tank is arranged above the right side of the top end of the liquid conveying lever, and the bottom end of the liquid storage tank is connected with a first protective pipe in a penetrating mode. A liquid inlet hole is formed in the top end of the first protection tube, an electric telescopic rod is fixedly connected to the left side of the top end of the infusion lever, an infusion apparatus is arranged below the left side of the infusion lever, and a second protection tube is fixedly connected to the middle of the top end of the infusion apparatus. The electric telescopic rod is matched with the rubber plug to form negative pressure in the infusion apparatus, so that the first electromagnetic valve is matched to enable liquid to enter the vacuum flow guide pipe from the liquid storage tank and flow to the infusion apparatus, and then the liquid is injected into a detection sample on the detection disc from the injection end through the infusion apparatus.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid injection, in particular to a liquid injection device for an infrared spectrometer. Background Art

[0002] The liquid injection device is a device that inputs specified liquid into the machine according to actual conditions. The infrared spectrometer liquid injection device is a device that transports the detection liquid to the detection structure of the infrared spectrometer through the injector, thereby simplifying the manual operation process.

[0003] The patent specification with announcement number CN216247692U discloses an infrared spectrometer with automatic injection function, which belongs to the field of infrared spectroscopy technology. Its technical points are: it includes an injection mechanism, the injection mechanism includes a baffle and a reciprocating assembly, the baffle is used to seal the injection port at the bottom of the liquid storage tank, the reciprocating assembly is used to drive the baffle to move, and the side of the reciprocating assembly is connected with a limiting member for limiting and guiding it. By adding infrared spectrometer liquid into the liquid storage tank, the injection port can discharge the infrared spectrometer liquid, and the reciprocating assembly is opened. The reciprocating assembly can drive the baffle to be inserted into the injection port, and the limiting member can guide and limit the reciprocating assembly. When the baffle is inserted into the injection port, the injection port can be in a sealed state, thereby achieving the purpose of good sealing effect. When the baffle is separated from the injection port, the injection port is in a feeding state, no manual insertion and extraction is required, and leakage is not likely to occur, which is more convenient to use.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned infrared spectrometer with automatic sampling function has the following problem: after using the device to seal and store the infrared spectrometer liquid, when the liquid needs to be transported to the infrared spectrometer detection structure, it is easy for the internal closed state to cause poor liquid circulation, affecting the detection efficiency. In view of this, an infrared spectrometer liquid sampling device is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that after the device is used to seal and store the liquid of the infrared spectrometer, when the liquid needs to be transported to the detection structure of the infrared spectrometer, the liquid circulation is easily blocked due to the closed state inside, thereby affecting the detection efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a liquid sampling device for an infrared spectrometer, comprising a protective shell with an infusion lever arranged inside, an infusion lever with a vacuum guide tube arranged inside, a liquid storage tank is arranged above the right side of the top end of the infusion lever, a first protective tube is inserted and connected to the bottom end of the liquid storage tank, a liquid inlet hole is opened at the top of the first protective tube, an electric telescopic rod is fixedly connected to the left side of the top end of the infusion lever, an infusion device is arranged at the lower left side of the infusion lever, and a second protective tube is fixedly connected to the middle part of the top end of the infusion device.

[0007] As a further description of the above technical solution: a first solenoid valve is arranged on the upper left side of the vacuum guide tube, a flow meter is arranged in the middle of the vacuum guide tube, and a second solenoid valve is arranged on the lower right side of the vacuum guide tube, thereby controlling whether the liquid flows in the vacuum guide tube.

[0008] As a further description of the above technical solution: the left side of the vacuum guide tube is slidably connected to the first protection tube, the right side of the vacuum guide tube is interlacedly connected to the second protection cover, and the vacuum guide tube is interlacedly connected to the infusion lever, thereby protecting the vacuum guide tube.

[0009] As a further description of the above technical solution: a partition is fixedly connected to the middle part of the interior of the protective shell, and a controller is fixedly connected to the front right side of the top end of the partition, and the controller is electrically connected to the electric telescopic rod, the first solenoid valve, the second solenoid valve and the flow meter respectively, thereby facilitating the control of the electric telescopic rod, the first solenoid valve, the second solenoid valve and the flow meter.

[0010] As a further description of the above technical solution: the first protective tube and the second protective tube are both slidably connected to the infusion lever, the infusion set is interlacedly connected to the right side of the vacuum guide tube, and the infusion set is interlacedly connected to the partition, thereby facilitating the injection of liquid into the test sample.

[0011] As a further description of the above technical solution: a detector is arranged at the lower part of the protective shell, a detection disk is arranged on the top of the detector, and the detection disk is located below the infusion pump, thereby facilitating the detection of the detection sample.

[0012] The utility model has the following beneficial effects:

[0013] The infrared spectrometer liquid sampling device designed by the utility model forms negative pressure in the infusion set through the design coordination of the infusion lever, the vacuum guide tube, the liquid storage tank and the infusion set through the electric telescopic rod coordinated with the rubber plug, so as to cooperate with the first solenoid valve to allow the liquid to enter the vacuum guide tube from the liquid storage tank and flow to the infusion set, and then the liquid is injected into the test sample on the test plate from the injection end through the infusion set.

[0014] The infrared spectrometer liquid injection device designed by the utility model cooperates with the design of a vacuum guide tube and a controller, controls the switches of a first solenoid valve and a second solenoid valve through the controller, and cooperates with an electric telescopic rod to make the liquid flow in the vacuum guide tube, and controls the flow rate through a flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the infusion lever of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at A;

[0018] Figure 4 This is a cross-sectional view of the vacuum guide tube structure of the utility model.

[0019] Legend:

[0020] 1. Protective shell; 2. Infusion lever; 3. Vacuum guide tube; 4. Liquid storage tank; 5. First protective tube; 6. Liquid inlet hole; 7. Electric telescopic rod; 8. Infusion pump; 9. Second protective tube; 10. First solenoid valve; 11. Flow meter; 12. Second solenoid valve; 13. Partition; 14. Controller; 15. Detector; 16. Detection plate. DETAILED DESCRIPTION

[0021] Reference Figure 1-4 The utility model provides a liquid sampling device for an infrared spectrometer: it includes a protective shell 1 with an infusion lever 2 arranged inside, an infusion lever 2 with a vacuum guide tube 3 arranged inside, a liquid storage tank 4 is arranged above the right side of the top of the infusion lever 2, a first protective tube 5 is inserted and connected to the bottom end of the liquid storage tank 4, a liquid inlet hole 6 is opened at the top of the first protective tube 5, and the vacuum guide tube 3 is entered from the liquid storage tank 4 through the liquid inlet hole 6 of the first protective tube 5, an electric telescopic rod 7 is fixedly connected to the left side of the top of the infusion lever 2, and the infusion lever 2 and the vacuum guide tube 3 are driven to move upward by the electric telescopic rod 7, an infusion device 8 is arranged at the lower left side of the infusion lever 2, and a second protective tube 9 is fixedly connected to the middle part of the top of the infusion device 8, and a negative pressure is formed in the infusion device 8 so that the liquid enters the vacuum guide tube 3 and flows to the infusion device 8.

[0022] As a further implementation scheme of the above technical scheme: a first solenoid valve 10 is arranged on the upper left side of the vacuum guide tube 3, a flow meter 11 is arranged in the middle of the vacuum guide tube 3, and a second solenoid valve 12 is arranged on the lower right side of the vacuum guide tube 3. By starting the first solenoid valve 10, liquid enters the vacuum guide tube 3 from the liquid storage tank 4 through the liquid inlet hole 6 of the first protective tube 5, and the liquid flowing through the vacuum guide tube 3 is detected by the flow meter 11.

[0023] As a further implementation scheme of the above technical scheme: the left side of the vacuum guide tube 3 is slidably connected to the first protective tube 5, the right side of the vacuum guide tube 3 is interlacedly connected to the second protective cover, and the vacuum guide tube 3 is interlacedly connected to the infusion lever 2, and the vacuum guide tube 3 is protected by the first protective tube 5 and the second protective tube 9.

[0024] As a further implementation scheme of the above technical scheme: a partition 13 is fixedly connected to the middle part of the interior of the protective shell 1, and a controller 14 is fixedly connected to the front right side of the top end of the partition 13, and the controller 14 is electrically connected to the electric telescopic rod 7, the first solenoid valve 10, the second solenoid valve 12 and the flow meter 11 respectively, and the electric telescopic rod 7, the first solenoid valve 10, the flow meter 11 and the second solenoid valve 12 are started in sequence by the controller 14.

[0025] As a further implementation scheme of the above technical scheme: the first protective tube 5 and the second protective tube 9 are both slidably connected to the infusion lever 2, the infusion set 8 is interlacedly connected to the right side of the vacuum guide tube 3, and the infusion set 8 is interlacedly connected to the partition 13, and the liquid is injected into the test sample through the injection end of the infusion set 8.

[0026] As a further implementation scheme of the above technical scheme: a detector 15 is arranged at the lower part of the protective shell 1, a detection tray 16 is arranged on the top of the detector 15, and the detection tray 16 is located below the infusion pump 8. The sample to be tested is stored in the groove of the detection tray 16 and tested by the detector 15.

[0027] Working principle:

[0028] When using the utility model, after placing the protective shell 1 at the designated position, first place the sample to be tested in the groove of the test plate 16, and seal the injection end of the infusion set 8 with a rubber stopper, then sequentially start the electric telescopic rod 7, the first solenoid valve 10, the flow meter 11 and the second solenoid valve 12 through the controller 14, and drive the infusion lever 2 and the vacuum guide tube 3 to move upward through the electric telescopic rod 7, so that the right side of the vacuum guide tube 3 drives the sealing pad of the infusion set 8 to move upward, thereby forming a negative pressure in the infusion set 8, so that the liquid enters the vacuum guide tube 3 and flows to The infusion set 8 starts the first solenoid valve 10 to allow the liquid to enter the vacuum guide tube 3 from the liquid storage tank 4 through the liquid inlet hole 6 of the first protective tube 5, and uses the flow meter 11 to detect the liquid flowing through the vacuum guide tube 3. After reaching the specified capacity, an electrical signal is transmitted to the controller 14, so that the controller 14 closes the first solenoid valve 10 and opens the second solenoid valve 12, thereby sending the liquid into the infusion set 8, and then the controller 14 controls the electric telescopic rod 7 to move downward, so that the liquid is injected into the test sample through the injection end of the infusion set 8, and is detected by the detector 15.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid sampling device for an infrared spectrometer, comprising a protective housing (1) with an infusion lever (2) disposed therein, and an infusion lever (2) with a vacuum guide tube (3) disposed therein, characterized in that: A liquid storage tank (4) is arranged above the right side of the top end of the infusion lever (2); a first protective tube (5) is inserted and connected to the bottom end of the liquid storage tank (4); a liquid inlet hole (6) is opened at the top end of the first protective tube (5); an electric telescopic rod (7) is fixedly connected to the left side of the top end of the infusion lever (2); an infusion device (8) is arranged below the left side of the infusion lever (2); a second protective tube (9) is fixedly connected to the middle of the top end of the infusion device (8).

2. The liquid sampling device for infrared spectrometer according to claim 1, characterized in that: A first solenoid valve (10) is arranged at the upper part of the left side of the vacuum guide tube (3), a flow meter (11) is arranged at the middle part of the vacuum guide tube (3), and a second solenoid valve (12) is arranged at the lower part of the right side of the vacuum guide tube (3).

3. The liquid sampling device for infrared spectrometer according to claim 1, characterized in that: The left side of the vacuum guide tube (3) is slidably connected to the first protection tube (5), the right side of the vacuum guide tube (3) is interpenetratingly connected to the second protection sleeve, and the vacuum guide tube (3) is interpenetratingly connected to the infusion lever (2).

4. The liquid sampling device for infrared spectrometer according to claim 1, characterized in that: A partition (13) is fixedly connected to the middle of the interior of the protective shell (1), and a controller (14) is fixedly connected to the front right side of the top end of the partition (13), and the controller (14) is electrically connected to the electric telescopic rod (7), the first solenoid valve (10), the second solenoid valve (12) and the flow meter (11) respectively.

5. The liquid sampling device for infrared spectrometer according to claim 1, characterized in that: The first protective tube (5) and the second protective tube (9) are both slidably connected to the infusion lever (2), the infusion set (8) is interpenetratingly connected to the right side of the vacuum guide tube (3), and the infusion set (8) is interpenetratingly connected to the partition (13).

6. The liquid sampling device for infrared spectrometer according to claim 1, characterized in that: A detector (15) is arranged at the lower part of the interior of the protective shell (1), a detection disk (16) is arranged at the top of the detector (15), and the detection disk (16) is located below the infusion set (8).

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