Alcohol purification purity automatic detector

Abstract

The utility model relates to the technical field of ethylene glycol detection, and discloses an alcohol purification purity automatic detector, which comprises a gas chromatograph, a detection port is arranged on the gas chromatograph, a pipetting assembly is arranged in the gas chromatograph, the pipetting assembly comprises a double-shaft moving device, a moving seat, a lifting seat and an electronic injector, and the double-shaft moving device is connected with the lifting seat. The moving seat is arranged on the double-shaft moving device in a sliding manner, the lifting seat is arranged on the moving seat in a sliding manner, the electronic injector is mounted on the lifting seat, and a reagent bottle is placed in the gas chromatograph. Through automatic control of the double-shaft moving device, the electronic injector can flexibly move to the positions of the reagent bottle and the detection opening, automatic sampling and automatic injection are achieved, the accuracy and repeatability of an experiment are improved, the whole detection process does not need manual intervention except that a worker places the reagent bottle at a designated position, and the detection efficiency is improved. Therefore, the workload of operators is reduced, and meanwhile, the risk of human errors is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ethylene glycol detection, in particular to an automatic detector for alcohol net purity. Background Art

[0002] An automatic detector for alcohol net purity is a device used to measure the purity of alcohol solutions. It usually uses various sensors and detection technologies, such as optical sensors, electrochemical sensors, or chromatographic analysis, etc., to detect the impurity content or the concentration of specific components in the alcohol solution, so as to determine its purity.

[0003] A gas chromatograph is a commonly used device for detecting alcohol purity. When using a gas chromatograph to detect ethylene glycol, manual injection is usually required. Manual injection requires operators to spend extra time and energy, and the efficiency is relatively low. Especially when a large number of samples need to be tested, manual injection may become a bottleneck in the experimental process and affect the overall progress speed of the experiment.

[0004] Therefore, it is necessary to design an automatic detector for alcohol net purity to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the defects existing in the prior art, and to provide an automatic detector for alcohol net purity.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An automatic detector for alcohol net purity includes a gas chromatograph. A detection port is arranged on the gas chromatograph. A liquid transfer assembly is arranged inside the gas chromatograph. The liquid transfer assembly includes a biaxial moving device, a moving seat, a lifting seat and an electronic syringe. The moving seat is slidably arranged on the biaxial moving device. The lifting seat is slidably arranged on the moving seat. The electronic syringe is installed on the lifting seat. A reagent bottle is placed inside the gas chromatograph, and the reagent bottle is located directly below the biaxial moving device. A needle placement assembly and a needle automatic dropping assembly are also arranged inside the gas chromatograph.

[0008] As a preferred technical scheme of the utility model, the needle placement assembly includes a fixing frame, a plurality of placement ports and a plurality of needles. The fixing frame is fixed on the inner surface of the gas chromatograph, and the fixing frame is located directly below the biaxial moving device. A plurality of the placement ports are all opened on the fixing frame, and a plurality of the needles are respectively placed in the plurality of placement ports.

[0009] As a preferred technical solution of the present utility model, the needle automatic detachment assembly includes a waste box, two connecting frames, an installation ring and two elastic sheets. The waste box is arranged inside the gas chromatograph. One end of each of the two connecting frames is fixedly connected to the waste box, and the other end of each of the two connecting frames is fixedly connected to the installation ring. The installation ring is located directly below the biaxial moving device, and the two elastic sheets are both fixed to the bottom surface of the installation ring.

[0010] As a preferred technical solution of the present utility model, the shape of the placement opening is adapted to the needle.

[0011] As a preferred technical solution of the present utility model, the waste box and the gas chromatograph are connected by a detachable structure.

[0012] As a preferred technical solution of the present utility model, the elastic sheet is made of an elastic material.

[0013] The present utility model has the following beneficial effects:

[0014] 1. Through the automatic control of the biaxial moving device, the electronic syringe can flexibly move to the positions of the reagent bottle and the detection port to achieve automatic sampling and automatic injection. This helps to improve the accuracy and repeatability of the experiment. Except for the staff placing the reagent bottle at the designated position, the entire detection process requires no manual intervention, which reduces the workload of the operator and at the same time reduces the risk of human error.

[0015] 2. The device realizes the automatic replacement of the needle through the needle placement assembly and the needle automatic detachment assembly, which helps to avoid cross-contamination between different reagents and improves the reliability of the experiment. Since the elastic sheet pushing mechanism is adopted in the automatic operation process, it can effectively avoid introducing external contamination during the needle replacement and ensure the purity of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of an alcohol purity automatic detector proposed by the present utility model;

[0017] Figure 2 is a plane sectional structural schematic diagram of an alcohol purity automatic detector proposed by the present utility model;

[0018] Figure 3 is Figure 2 the enlarged view of the structure at A of

[0019] Figure 4 is Figure 3 the enlarged view of the structure at B of

[0020] In the figure: 1 gas chromatograph, 2 pipetting assembly, 21 biaxial moving device, 22 moving seat, 23 lifting seat, 24 electronic syringe, 3 detection port, 4 reagent bottle, 51 fixing rack, 52 placement opening, 53 needle, 61 waste bin, 62 connecting rack, 63 mounting ring, 64 elastic sheet. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Refer to Figures 1-4 , an alcohol purity automatic detector, including a gas chromatograph 1, a detection port 3 is provided on the gas chromatograph 1, a pipetting assembly 2 is provided inside the gas chromatograph 1, the pipetting assembly 2 includes a biaxial moving device 21, a moving seat 22, a lifting seat 23 and an electronic syringe 24, the moving seat 22 is slidably arranged on the biaxial moving device 21, the lifting seat 23 is slidably arranged on the moving seat 22, the electronic syringe 24 is installed on the lifting seat 23, a reagent bottle 4 is placed inside the gas chromatograph 1, and the reagent bottle 4 is located directly below the biaxial moving device 21. When adding ethylene glycol, the device can realize the automatic feeding of ethylene glycol. After feeding, the gas chromatograph 1 automatically detects ethylene glycol. The entire detection process only requires the staff to manually place the reagent bottle 4 on the gas chromatograph 1, and the rest of the steps do not require manual intervention;

[0023] A needle placement assembly is also provided inside the gas chromatograph 1. The needle placement assembly includes a fixing rack 51, a plurality of placement openings 52 and a plurality of needles 53. The fixing rack 51 is fixed on the inner surface of the gas chromatograph 1, and the fixing rack 51 is located directly below the biaxial moving device 21. A plurality of placement openings 52 are opened on the fixing rack 51, and a plurality of needles 53 are respectively placed in the plurality of placement openings 52. The shape of the placement opening 52 is adapted to the needle 53. When installing the needle, the electronic syringe 24 moves above the fixing rack 51 until the electronic syringe 24 is directly opposite one of the needles 53, and then the electronic syringe 24 moves down until the electronic syringe 24 is connected to the needle 53, so as to realize the automatic replacement of the needle 53 without manual replacement of the needle 53.

[0024] Inside the gas chromatograph 1, there is also a needle automatic detachment assembly. The needle automatic detachment assembly includes a waste box 61, two connecting frames 62, a mounting ring 63 and two elastic sheets 64. The waste box 61 is arranged inside the gas chromatograph 1. The waste box 61 is connected to the gas chromatograph 1 through a detachable structure. One end of each of the two connecting frames 62 is fixedly connected to the waste box 61, and the other end of each of the two connecting frames 62 is fixedly connected to the mounting ring 63. The mounting ring 63 is located directly below the biaxial moving device 21. The two elastic sheets 64 are both fixed to the bottom surface of the mounting ring 63. The elastic sheets 64 are made of elastic materials. Specifically, the elastic sheets 64 can be made of plastic materials. The device can automatically replace the needle by using the needle placement assembly and the needle automatic detachment assembly. After each feeding, the electronic syringe 24 automatically replaces the needle to avoid cross-contamination between different types of reagents.

[0025] The specific working principle of the present utility model is as follows:

[0026] When detecting ethylene glycol, the staff places the reagent bottle 4 containing ethylene glycol at the preset position of the gas chromatograph 1. During the detection, the biaxial moving device 21 is started to drive the moving seat 22 and the lifting seat 23 to move automatically, which enables the electronic syringe 24 to move flexibly. When the electronic syringe 24 moves directly above the reagent bottle 4, the electronic syringe 24 moves downward until the electronic syringe 24 inserts into the reagent bottle 4. The electronic syringe 24 automatically samples. After the sampling is completed, the electronic syringe 24 moves upward and then moves directly above the detection port 3. Further, the electronic syringe 24 moves downward again until the electronic syringe 24 inserts into the detection port 3. Finally, the electronic syringe 24 automatically injects ethylene glycol into the detection port 3, and the automatic feeding of ethylene glycol can be achieved. After the feeding, the gas chromatograph 1 automatically detects ethylene glycol. For the entire detection process, the staff only needs to manually place the reagent bottle 4 on the gas chromatograph 1, and the rest of the steps do not require manual intervention. It should be noted that the specific structures and working principles of the biaxial moving device 21 and the electronic syringe 24 are not the innovative parts of this technical solution and are not shown in the figure, nor will they be elaborated here;

[0027] The gas chromatograph 1 is also provided with a needle placement component and an automatic needle removal component. The device can use the needle placement component and the automatic needle removal component to automatically replace the needle. After each addition, the electronic injector 24 automatically replaces the needle to avoid cross contamination between different types of reagents. Specifically, the electronic injector 24 first moves to the top of the mounting ring 63, and then the electronic injector 24 moves down to insert the needle on the electronic injector 24 into the mounting ring 63. In this process, the electronic injector 24 will push the two elastic sheets 64 away from each other. When the needle of the electronic injector 24 is separated from the two elastic sheets 64, the two The elastic sheet 64 is located above the needle of the electronic syringe 24. At this time, the electronic syringe 24 will return to its original shape under the action of its own elastic force and press against the top of the needle. Then the electronic syringe 24 moves up. At this time, the two elastic sheets 64 can push the needle on the electronic syringe 24 off and make the needle fall into the waste box 61. This step can realize the automatic shedding of the needle. When installing the needle, the electronic syringe 24 moves to the top of the fixing frame 51 until the electronic syringe 24 is facing one of the needles 53. Then the electronic syringe 24 moves down until the electronic syringe 24 is connected to the needle 53. Then the needle 53 can be automatically replaced without manual replacement of the needle 53.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic alcohol purity detector, comprising a gas chromatograph (1), wherein the gas chromatograph (1) is provided with a detection port (3), characterized in that: The gas chromatograph (1) is provided with a liquid transfer assembly (2) inside. The liquid transfer assembly (2) comprises a biaxial moving device (21), a moving seat (22), a lifting seat (23) and an electronic injector (24). The moving seat (22) is slidably arranged on the biaxial moving device (21). The lifting seat (23) is slidably arranged on the moving seat (22). The electronic injector (24) is mounted on the lifting seat (23). A reagent bottle (4) is placed inside the gas chromatograph (1), and the reagent bottle (4) is located directly below the biaxial moving device (21). A needle placement assembly and a needle automatic shedding assembly are also provided inside the gas chromatograph (1).

2. The automatic alcohol purity detector according to claim 1, characterized in that: The needle placement assembly comprises a fixing frame (51), a plurality of placement openings (52) and a plurality of needles (53); the fixing frame (51) is fixed to the inner surface of the gas chromatograph (1), and the fixing frame (51) is located directly below the biaxial moving device (21); the plurality of placement openings (52) are all opened on the fixing frame (51), and the plurality of needles (53) are respectively placed in the plurality of placement openings (52).

3. The automatic alcohol purity detector according to claim 1, characterized in that: The automatic needle removal assembly comprises a waste box (61), two connecting frames (62), a mounting ring (63) and two elastic sheets (64); the waste box (61) is arranged inside the gas chromatograph (1); one end of the two connecting frames (62) is fixedly connected to the waste box (61); the other end of the two connecting frames (62) is fixedly connected to the mounting ring (63); the mounting ring (63) is located directly below the dual-axis moving device (21); and the two elastic sheets (64) are fixed to the bottom surface of the mounting ring (63).

4. The automatic alcohol purity detector according to claim 2, characterized in that: The shape of the placement opening (52) is compatible with the needle (53).

5. The automatic alcohol purity detector according to claim 3, characterized in that: The waste box (61) is connected to the gas chromatograph (1) via a detachable structure.

6. The automatic alcohol purity detector according to claim 3, characterized in that: The elastic sheet (64) is made of elastic material.

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