Nuclear magnetic sample on-machine detection equipment

Abstract

The utility model discloses nuclear magnetic sample on-machine detection equipment which comprises a base, the top end of the base is fixedly connected with a barrel, a light source and a light source receiving piece are arranged outside the barrel, a sample tube is connected inside the barrel in a sliding and penetrating mode, and a protection mechanism used for enabling the light source to be located inside a sealed cavity is arranged outside the barrel. And the protection mechanism comprises a protection cylinder, a fixed cylinder and a positioning rod, the top end of the protection cylinder is fixedly connected with a movable ring, the fixed cylinder is arranged outside the cylinder body in a sleeving mode, and the positioning rod is slidably arranged on the side portion of the cylinder body. The protective cylinder, the movable ring, the fixed cylinder, the positioning rod, the connecting frame, the light source and the light source receiving piece are matched with one another, the light source and the light source receiving piece are enclosed by the protective cylinder and the movable ring, and the relative positions of the fixed cylinder and the cylinder body are limited by the positioning rod, so that the light source can be conveniently used when the light source is not used; the light source and the light source receiver are externally shielded and protected, so that the light source is prevented from being damaged by the external environment.

Description

Technical Field

[0001] This utility model relates to the field of nuclear magnetic resonance (NMR) sample testing equipment, and in particular to an NMR sample testing equipment. Background Technology

[0002] NMR samples typically refer to samples used for analysis and detection in nuclear magnetic resonance experiments. NMR samples can be divided into liquid NMR samples and solid NMR samples. NMR samples usually need to undergo on-machine testing to determine whether the NMR sample can be tested, which involves using NMR sample testing equipment.

[0003] Application No. 202321646659.5 mentions an NMR sample testing device, including a cylinder, a sample tube, and a rotor. The sample tube passes through the rotor and slides with it. The NMR sample is placed at the bottom of the inner cavity of the sample tube. A positioning structure is provided at the top of the cylinder. The rotor is connected to the cylinder through the positioning structure. A fixed-depth stop is provided in the inner cavity of the cylinder. The lower end of the sample tube contacts the fixed-depth stop. A light source and a light source receiver are provided on the side wall of the cylinder above the fixed-depth stop. The light source and the light source receiver are located on both sides of the NMR sample, respectively.

[0004] The process involves using a sample tube to hold the NMR sample, inserting the sample tube into the cylinder and passing it through a rotor. A depth stop limits the drop position of the sample tube. Then, a light source and a light source receiver are used to detect the transmittance of the NMR sample. However, when the cylinder is not in use, the light source and light source receiver are usually located outside the cylinder. If workers accidentally touch them, the cylinder may tilt and fall, or external liquids may splash, affecting the safety of the light source. Therefore, it is not convenient to provide external protection for the light source when it is not in use, which has certain limitations. Utility Model Content

[0005] The purpose of this invention is to provide an instrument for testing nuclear magnetic resonance (NMR) samples to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nuclear magnetic resonance (NMR) sample testing device, comprising:

[0007] A base, the top of which is fixedly connected to a cylinder, a light source and a light source receiver are provided on the outside of the cylinder, and a sample tube is slidably inserted into the inside of the cylinder;

[0008] The outer surface of the cylinder is provided with a protective mechanism for placing the light source inside the sealed cavity, the protective mechanism including:

[0009] A protective cylinder, the top end of which is fixedly connected to a movable ring;

[0010] A fixed cylinder, wherein the fixed cylinder is sleeved on the outside of the cylinder body;

[0011] A positioning rod is slidably disposed on the side of the cylinder body, and the positioning rod is used to lock and fix the position of the cylinder.

[0012] Preferably, the inner cavity of the cylinder is slidably inserted into the inner cavity of the moving ring, the top of the base is provided with an annular groove that matches the protective cylinder, the outer wall of the fixed cylinder is provided with a sliding groove, and the positioning rod is slidably inserted into the inner cavity of the sliding groove.

[0013] Preferably, the outer wall of the cylinder is provided with a positioning groove, the positioning rod is slidably inserted into the inner cavity of the positioning groove, and a connecting frame is fixedly connected to the side of the positioning rod.

[0014] Preferably, a guide frame is slidably inserted into the inner cavity of the connecting frame, and a locking bolt is threadedly inserted into the side of the connecting frame, with one end of the locking bolt threadedly inserted into the guide frame.

[0015] Preferably, a connecting post is slidably inserted into the inner cavity of the guide frame, a through groove that mates with the connecting post is provided at the bottom of the inner wall of the connecting frame, a movable plate is fixedly connected to the side of the connecting post, an anti-loss rope is fixedly connected to the top of the connecting post, and one end of the anti-loss rope is fixedly connected to the fixed cylinder.

[0016] Preferably, the bottom end of the connecting post is threadedly connected to a threaded post, the bottom end of the threaded post is fixedly connected to a first magnet, the top end of the movable ring is provided with a groove that cooperates with the first magnet, and the bottom end of the inner wall of the groove is fixedly connected to a second magnet, with the opposite magnetic poles of the first magnet and the second magnet facing each other.

[0017] The technical effects and advantages of this utility model are:

[0018] This utility model utilizes the cooperation of a protective cylinder, a movable ring, a fixed cylinder, a positioning rod, a connecting frame, a light source, and a light source receiver. The protective cylinder and the movable ring enclose the light source and the light source receiver, and the positioning rod limits the relative position of the fixed cylinder and the cylinder body. This facilitates external shielding and protection of the light source and the light source receiver when the light source is not in use, and helps prevent the light source from being damaged by the external environment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a front cross-sectional view of the present invention.

[0021] Figure 3 This is a front sectional view of the connecting frame of this utility model.

[0022] In the diagram: 1. Base; 2. Cylinder; 3. Light source; 4. Light source receiver; 5. Protection mechanism; 51. Protective cylinder; 52. Moving ring; 53. Fixed cylinder; 54. Positioning rod; 55. Connecting frame; 56. Connecting column; 57. First magnet; 58. Second magnet; 59. Moving plate; 510. Guide frame. Detailed Implementation

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] This utility model provides, for example Figure 1-3 The NMR sample testing device shown includes a base 1, with a cylindrical body 2 fixedly connected to the top of the base 1. This facilitates the insertion of a sample tube into the base and also supports the light source 3 and the light source receiver 4. The light source 3 and the light source receiver 4 are located on the outside of the cylindrical body 2. When the light source 3 is activated, it emits light. The light passes through the NMR sample inside the sample tube and reaches the light source receiver 4. The light source receiver 4 detects the light intensity and calculates the transmittance based on the light intensity of the light source 3 and the light intensity detected by the light source receiver 4. If the transmittance is qualified, the rotor can be directly placed into the NMR testing device for NMR sample testing. If the transmittance is unqualified, it indicates that the NMR sample is not suitable for NMR testing. The sample tube is slidably inserted into the inside of the cylindrical body 2, which facilitates the holding of the NMR sample and makes it easy to load the NMR sample into the inside of the cylindrical body 2 for testing.

[0025] Furthermore, the exterior of the cylinder 2 is provided with a protective mechanism 5 for placing the light source 3 inside the sealed cavity. The protective mechanism 5 includes a protective cylinder 51, a fixed cylinder 53, and a positioning rod 54. The protective cylinder 51 and the moving ring 52 facilitate external shielding protection for the light source 3 and the light source receiver 4 when they are not in use, preventing them from being accidentally dropped or affected by external contaminants. The positioning rod 54 helps to limit the relative position of the fixed cylinder 53 and the cylinder 2, thereby facilitating the positioning of the two sides of the protective cylinder 51. The location is defined for the use and storage of the protective cylinder 51. The top of the protective cylinder 51 is fixedly connected to a movable ring 52, which helps to support the protective cylinder 51. The fixed cylinder 53 is sleeved on the outside of the cylinder body 2. The positioning rod 54 is slidably set on the side of the cylinder body 2. The positioning rod 54 is used to lock the position of the fixed cylinder 53. The inner cavity of the cylinder body 2 and the movable ring 52 are slidably inserted and connected. The top of the base 1 is provided with an annular groove that cooperates with the protective cylinder 51. The outer wall of the fixed cylinder 53 is provided with a sliding groove. The positioning rod 54 is slidably inserted and connected to the inner cavity of the sliding groove.

[0026] Specifically, a positioning groove is provided on the outer wall of the cylinder 2. The positioning rod 54 is slidably inserted into the inner cavity of the positioning groove. A connecting frame 55 is fixedly connected to the side of the positioning rod 54, which facilitates the traction operation of the positioning rod 54, allowing the positioning rod 54 to connect or disconnect from the cylinder 2. A guide frame 510 is slidably inserted into the inner cavity of the connecting frame 55, which facilitates the sliding of the positioning rod 54 and limits the movement position of the moving plate 59. A locking bolt is threadedly inserted into the side of the connecting frame 55, which facilitates the installation and disassembly of the guide frame 510. One end of the locking bolt is threadedly inserted into the guide frame 510. A connecting post 56 is slidably inserted into the inner cavity of the guide frame 510, which facilitates the movement of the first magnet 57 and the traction operation of the first magnet 57. A through groove is provided at the bottom of the inner wall of the connecting frame 55 to cooperate with the connecting post 56. A movable plate 59 is fixedly connected to the side of the connecting post 56, which helps to limit the movement position of the connecting post 56 and prevent the connecting post 56 from detaching from the inner cavity of the connecting frame 55 at will. An anti-loss rope is fixedly connected to the top of the connecting post 56, which helps to prevent the connecting post 56 from being lost after it is taken out of the inside of the connecting frame 55. One end of the anti-loss rope is fixedly connected to the fixed cylinder 53. A threaded post is threadedly connected to the bottom of the connecting post 56, which helps to install the first magnet 57. The bottom of the threaded post is fixedly connected to the first magnet 57. The first magnet 57 and the second magnet 58 help to limit the position of the connecting post 56, thereby preventing the connecting frame 55 from sliding at will and increasing the stability of the positioning rod 54 connection. The top of the movable ring 52 has a groove that matches the first magnet 57. The bottom of the inner wall of the groove is fixedly connected to the second magnet 58. The opposite magnetic poles of the first magnet 57 and the second magnet 58 are opposite to each other.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An instrument for on-machine detection of NMR samples, comprising: A base (1) is fixedly connected to a cylinder (2) at its top end. A light source (3) and a light source receiver (4) are provided on the outside of the cylinder (2). A sample tube is slidably inserted into the inside of the cylinder (2). The feature is that the outer side of the cylindrical body (2) is provided with a protective mechanism (5) for placing the light source (3) inside the sealed cavity, the protective mechanism (5) comprising: A protective cylinder (51) is provided, with a movable ring (52) fixedly connected to its top end; A fixing cylinder (53) is sleeved on the outside of the cylinder body (2); Positioning rod (54) is slidably disposed on the side of the cylinder (2) and is used to lock and fix the position of the cylinder (53).

2. The NMR sample testing equipment according to claim 1, characterized in that, The inner cavity of the cylinder (2) is slidably inserted into the inner cavity of the moving ring (52), the top of the base (1) is provided with an annular groove that cooperates with the protective cylinder (51), the outer wall of the fixed cylinder (53) is provided with a sliding groove, and the positioning rod (54) is slidably inserted into the inner cavity of the sliding groove.

3. The NMR sample testing equipment according to claim 1, characterized in that, The outer wall of the cylinder (2) is provided with a positioning groove, and the positioning rod (54) is slidably inserted into the inner cavity of the positioning groove. A connecting frame (55) is fixedly connected to the side of the positioning rod (54).

4. The NMR sample testing equipment according to claim 3, characterized in that, The inner cavity of the connecting frame (55) is slidably connected to the guide frame (510), and the side of the connecting frame (55) is threadedly connected to the locking bolt. One end of the locking bolt is threadedly connected to the guide frame (510).

5. The NMR sample testing equipment according to claim 4, characterized in that, The inner cavity of the guide frame (510) is slidably connected to a connecting post (56). The bottom end of the inner wall of the connecting frame (55) is provided with a through groove that matches the connecting post (56). A movable plate (59) is fixedly connected to the side of the connecting post (56). An anti-loss rope is fixedly connected to the top of the connecting post (56). One end of the anti-loss rope is fixedly connected to the fixed cylinder (53).

6. The NMR sample testing equipment according to claim 5, characterized in that, The bottom end of the connecting post (56) is threadedly connected to a threaded post, and the bottom end of the threaded post is fixedly connected to a first magnet (57). The top end of the moving ring (52) is provided with a groove that matches the first magnet (57). The bottom end of the inner wall of the groove is fixedly connected to a second magnet (58). The opposite magnetic poles of the first magnet (57) and the second magnet (58) are opposite to each other.

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