Automatic sampling device for nuclear magnetic detection

Abstract

The utility model discloses an automatic sampling device for nuclear magnetic detection, and relates to the field of laboratory instruments. The nuclear magnetic detection automatic sample injection device comprises a rotating ring which rotates at the position, close to a sample injection port, of the upper end of a nuclear magnetic resonance spectrometer; the driving mechanism is used for driving the rotating ring to rotate and is mounted on the nuclear magnetic resonance spectrometer; the mounting ring is fixedly connected above the rotating ring through a supporting rod; according to the utility model, a test tube filled with a sample can be automatically fed into and taken out of the nuclear magnetic resonance spectrometer, the whole sample feeding and sampling process can be automatically completed, the automation degree is higher, and continuous and efficient operation of the nuclear magnetic resonance spectrometer can be realized, so that the analysis and test efficiency is effectively improved; and the device is integrated at the position, close to the sample inlet, of the upper end of the nuclear magnetic resonance spectrometer, so that the distance between the test tube and the sample inlet of the nuclear magnetic resonance spectrometer can be shortened, and the analysis and test efficiency is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laboratory instruments, and in particular relates to an automatic sample introduction device for nuclear magnetic detection. Background Art

[0002] The nuclear magnetic resonance spectrometer is an extremely powerful analytical device that is widely used in laboratory non-destructive testing. It can use the nuclear magnetic resonance spectrometer to analyze and test the composition and structure of various organic and inorganic substances.

[0003] In the related art, when a nuclear magnetic resonance spectrometer is performing sampling, the conventional experimental steps are usually to place a test tube containing a sample into a pre-made container and manually push it into the appropriate position of the nuclear magnetic coil tube for detection. Although the sample placement operation can be completed by manually placing the sample into the nuclear magnetic resonance spectrometer, the degree of automation is not high. When the number of samples is large, more labor costs are required, and the analysis and testing efficiency of the nuclear magnetic resonance spectrometer for the samples is relatively low. In view of this, the present utility model is specially proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a nuclear magnetic detection automatic sample introduction device which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: an automatic sampling device for nuclear magnetic detection, comprising: a rotating ring, rotating at a position close to the injection port at the upper end of a nuclear magnetic resonance spectrometer; a driving mechanism for driving the rotating ring to rotate, installed on the nuclear magnetic resonance spectrometer; a mounting ring, fixedly connected to the upper part of the rotating ring through a support rod; a temperature control tube, fixedly connected to the lower end of the mounting ring at equidistant intervals around the circumference, and a through hole intersecting the temperature control tube is opened on the mounting ring; a sample test tube is placed in the temperature control tube through a rotor, and the diameter of the rotor is larger than the diameter of the through hole; a rotating rod, rotatably connected to the upper end of the nuclear magnetic resonance spectrometer, and located between the mounting ring and the injection port; the mounting ring controls the synchronous rotation of the rotating rod through a transmission assembly; a mounting plate, fixedly connected to the upper end of the rotating rod; an electric telescopic rod, fixedly connected to the side of the mounting plate away from the rotating rod; an electric vacuum suction cup, fixedly installed at the telescopic end of the electric telescopic rod.

[0006] Furthermore, the driving mechanism includes a motor and a first gear, a circle of T-slots is provided at the lower end of the rotating ring, a T-ring is rotatably connected in the T-slot, support rods are symmetrically fixedly connected on both sides of the nuclear magnetic resonance spectrometer, the T-rings are fixedly connected to the support rods, a support plate is fixedly connected to one of the support rods, the motor is mounted on the support plate, the first gear is fixedly connected to the output end of the motor, and an external tooth groove group meshing with the first gear is provided on the outer side of the rotating ring.

[0007] In order to facilitate the testing personnel to take and place the test tube containing the sample, further, the support rod is a hydraulic telescopic rod.

[0008] In order to improve the stability of the rotating ring, further, the inner wall of the rotating ring is slidably attached to the outer wall of the nuclear magnetic resonance spectrometer.

[0009] Furthermore, the transmission assembly includes a transmission rod and a second gear, the transmission rod is rotatably connected to the upper end of the nuclear magnetic resonance spectrometer and is located between the mounting ring and the rotating rod, the second gear is fixedly connected to the upper end of the transmission rod, and an internal tooth groove group meshing with the second gear is provided on the inner side of the mounting ring, and a first transmission wheel and a second transmission wheel are fixedly connected to the transmission rod and the rotating rod respectively, and the first transmission wheel and the second transmission wheel are connected by a transmission belt.

[0010] In order to facilitate the inspectors to know whether the sample in the temperature control tube has completed the inspection through the change of the surface color of the temperature control tube, the outer surface of the temperature control tube is further coated with temperature-sensitive color-changing powder.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model can automatically send a test tube containing a sample into and take it out of the nuclear magnetic resonance spectrometer through the coordinated use of components such as a rotating ring, a driving mechanism, a mounting ring, a rotating rod, a transmission assembly, a mounting plate, an electric telescopic rod, and an electric vacuum suction cup. The entire sampling process can be completed automatically, with a high degree of automation, and can realize continuous and efficient operation of the nuclear magnetic resonance spectrometer, thereby effectively improving the analysis and testing efficiency. Moreover, by integrating the device at a position close to the sampling port at the upper end of the nuclear magnetic resonance spectrometer, the distance between the test tube and the sampling port of the nuclear magnetic resonance spectrometer can be shortened, further improving the analysis and testing efficiency.

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached picture:

[0014] Figure 1 This is a schematic diagram of the structure of the automatic sampling device for nuclear magnetic detection proposed by the utility model;

[0015] Figure 2 This is a partial cross-sectional structural schematic diagram of the automatic sampling device for nuclear magnetic detection proposed by the utility model;

[0016] Figure 3 The utility model is a nuclear magnetic detection automatic sampling device Figure 2 Schematic diagram of the structure of part A.

[0017] In the figure: 1. Nuclear magnetic resonance spectrometer; 2. Support rod; 3. Rotating ring; 301. External tooth groove group; 302. T-ring; 4. Motor; 5. First gear; 6. Mounting ring; 601. Internal tooth groove group; 7. Temperature control tube; 8. Transmission rod; 801. Second gear; 802. First transmission wheel; 9. Rotating rod; 901. Second transmission wheel; 10. Mounting plate; 11. Electric telescopic rod; 12. Electric vacuum suction cup. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0019] Embodiment 1:

[0020] Reference Figure 1-Figure 3 The invention discloses an automatic sampling device for nuclear magnetic resonance detection, comprising: a rotating ring 3, which rotates at a position near the injection port at the upper end of a nuclear magnetic resonance spectrometer 1; a driving mechanism for driving the rotating ring 3 to rotate, which is installed on the nuclear magnetic resonance spectrometer 1; a mounting ring 6, which is fixedly connected to the upper part of the rotating ring 3 through a support rod; a temperature control tube 7, which is fixedly connected to the lower end of the mounting ring 6 at equidistant intervals around the circumference, and a through hole which is connected to the temperature control tube 7 is opened on the mounting ring 6; a sample test tube is placed in the temperature control tube 7 through a rotor, and the diameter of the rotor is larger than the diameter of the through hole; a rotating rod 9, which is rotatably connected to the upper end of the nuclear magnetic resonance spectrometer 1 and is located between the mounting ring 6 and the injection port; the mounting ring 6 controls the rotating rod 9 to rotate synchronously through a transmission component; a mounting plate 10, which is fixedly connected to the upper end of the rotating rod 9; an electric telescopic rod 11, which is fixedly connected to the side of the mounting plate 10 away from the rotating rod 9; and an electric vacuum suction cup 12, which is fixedly installed at the telescopic end of the electric telescopic rod 11.

[0021] The driving mechanism includes a motor 4 and a first gear 5. A circle of T-slots is provided at the lower end of the rotating ring 3. A T-ring 302 is rotatably connected in the T-slot. Support rods 2 are symmetrically fixedly connected on both sides of the nuclear magnetic resonance spectrometer 1. The T-ring 302 is fixedly connected to the support rods 2. A support plate is fixedly connected to one of the support rods 2. The motor 4 is mounted on the support plate. The first gear 5 is fixedly connected to the output end of the motor 4. An external tooth groove group 301 meshing with the first gear 5 is provided on the outer side of the rotating ring 3.

[0022] The transmission assembly includes a transmission rod 8 and a second gear 801. The transmission rod 8 is rotatably connected to the upper end of the nuclear magnetic resonance spectrometer 1 and is located between the mounting ring 6 and the rotating rod 9. The second gear 801 is fixedly connected to the upper end of the transmission rod 8. The inner side of the mounting ring 6 is provided with an internal tooth groove group 601 meshing with the second gear 801. The transmission rod 8 and the rotating rod 9 are respectively fixedly connected with a first transmission wheel 802 and a second transmission wheel 901. The first transmission wheel 802 and the second transmission wheel 901 are connected by a transmission belt.

[0023] During the experimental test, when it is necessary to perform nuclear magnetic resonance testing on the sample, the tester first puts the sample to be tested into a test tube, and then installs the test tube on the rotor. Then, the test tube can be placed in the temperature control tube 7 of the mounting ring 6 through the rotor, and then the temperature control tube 7 can be started to adjust the temperature inside the tube to an appropriate range according to the temperature required by the sample.

[0024] After the previous work is ready, the motor 4 can be started at this time. The motor 4 will drive the rotating ring 3 to rotate through the first gear 5 and the outer tooth groove group 301. The rotating ring 3 will drive the mounting ring 6 to rotate through the support rod. When one of the test tubes installed on the mounting ring 6 rotates to the side of the second gear 801, the electric telescopic rod 11 will just rotate to the top of the test tube. Then the electric vacuum suction cup 12 can be controlled to move downward by the electric telescopic rod 11. When the electric vacuum suction cup 12 is attached to the rotor, the electric vacuum suction cup 12 can be started at this time, so that the rotor can be sucked and fixed. Then the electric vacuum suction cup 12 can be controlled to return to its original position by the electric telescopic rod 11. The test tube can be taken out from the temperature control tube 7, and then the mounting ring 6 is controlled to rotate 180°. The mounting ring 6 will drive the transmission rod 8 to rotate through the internal tooth groove group 601, and the transmission rod 8 will drive the rotating rod 9 to rotate through the first transmission wheel 802, the second transmission wheel 901 and the transmission belt. The rotating rod 9 will drive the electric telescopic rod 11 to rotate through the mounting plate 10. When the electric telescopic rod 11 rotates to just above the injection port of the nuclear magnetic resonance spectrometer 1, the test tube can be controlled to move downward by the electric telescopic rod 11. When the test tube is located in the injection port, the electric vacuum suction cup 12 can be released, and then the test tube will enter the nuclear magnetic resonance spectrometer 1 for nuclear magnetic detection.

[0025] When the test is completed, the test tube containing the tested sample can be taken out through the electric telescopic rod 11 and the electric vacuum suction cup 12, and then the mounting ring 6 is driven in reverse to rotate. After reversing 180°, the test tube will be located directly above the temperature control tube 7, and then the test tube can be put back into the temperature control tube 7 through the electric telescopic rod 11 and the electric vacuum suction cup 12.

[0026] When it is necessary to test the sample in the next test tube, the mounting ring 6 is controlled to rotate. When the next test tube is rotated to the side of the second gear 801, the rotating rod 9 rotates one circle so that it is located directly above the test tube. Then the above operation steps are repeated to test the sample in the test tube. By repeating this process, different samples can be continuously subjected to nuclear magnetic resonance testing.

[0027] Embodiment 2:

[0028] Reference Figure 1-Figure 3 The automatic sampling device for nuclear magnetic detection is basically the same as that of Example 1, and further, the support rod 2 is a hydraulic telescopic rod, and the support plate is installed on the telescopic rod of the hydraulic telescopic rod. By setting the support rod 2 as a hydraulic telescopic rod, when it is necessary to put the test tube containing the sample into the temperature control tube 7 or take it out, the hydraulic telescopic rod can be used to control the mounting ring 6 to move downward, so that it is convenient for the detection personnel to take and place the test tube containing the sample, providing convenience for the detection personnel to use the device.

[0029] The inner wall of the rotating ring 3 slides against the outer wall of the nuclear magnetic resonance spectrometer 1. By making the inner wall of the rotating ring 3 slide against the outer wall of the nuclear magnetic resonance spectrometer 1, when the rotating ring 3 rotates, the stability of the rotating ring 3 can be further improved to avoid tilting and shaking.

[0030] The outer surface of the temperature control tube 7 is coated with temperature-sensitive color-changing powder. By arranging temperature-sensitive material on the temperature control tube 7, when the temperature control tube 7 adjusts the temperature of the sample in the test tube for storage, the temperature-sensitive color-changing powder on the surface of the temperature control tube 7 will change color. When the nuclear magnetic resonance detection of the sample is completed and the test tube is put back into the temperature control tube 7, the temperature control tube 7 can be controlled to be closed, and then the temperature-sensitive color-changing powder will restore its initial color. Then the inspector can know whether the sample in the temperature control tube 7 has completed the detection by the change in the color of the surface of the temperature control tube 7, which provides convenience for the inspector.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. Automatic sampling device for nuclear magnetic detection, characterized in that: include: A rotating ring (3) is rotated at a position near the injection port at the upper end of the nuclear magnetic resonance spectrometer (1); A driving mechanism for driving the rotating ring (3) to rotate, mounted on the nuclear magnetic resonance spectrometer (1); A mounting ring (6) fixedly connected to the top of the rotating ring (3) via a support rod; The temperature control tube (7) is fixedly connected to the lower end of the mounting ring (6) at equal intervals around the circumference, and the mounting ring (6) is provided with a through hole that is connected to the temperature control tube (7); The sample test tube is placed in the temperature control tube (7) through a rotor, and the diameter of the rotor is larger than the diameter of the through-hole; A rotating rod (9) is rotatably connected to the upper end of the nuclear magnetic resonance spectrometer (1) and is located between the mounting ring (6) and the injection port; The mounting ring (6) controls the rotating rod (9) to rotate synchronously via a transmission assembly; A mounting plate (10) fixedly connected to the upper end of the rotating rod (9); An electric telescopic rod (11) fixedly connected to a side of the mounting plate (10) away from the rotating rod (9); The electric vacuum suction cup (12) is fixedly mounted on the telescopic end of the electric telescopic rod (11).

2. The automatic sampling device for nuclear magnetic detection according to claim 1, characterized in that: The driving mechanism comprises a motor (4) and a first gear (5); a circle of T-shaped grooves is provided at the lower end of the rotating ring (3); a T-shaped ring (302) is rotatably connected in the T-shaped groove; support rods (2) are symmetrically fixedly connected on both sides of the nuclear magnetic resonance spectrometer (1); the T-shaped ring (302) is fixedly connected to the support rods (2); a support plate is fixedly connected to one of the support rods (2); the motor (4) is mounted on the support plate; the first gear (5) is fixedly connected to the output end of the motor (4); and an external tooth groove group (301) meshing with the first gear (5) is provided on the outer side of the rotating ring (3).

3. The automatic sampling device for nuclear magnetic detection according to claim 2, characterized in that: The support rod (2) is a hydraulic telescopic rod.

4. The automatic sampling device for nuclear magnetic detection according to claim 2, characterized in that: The inner side wall of the rotating ring (3) is slidably attached to the outer wall of the nuclear magnetic resonance spectrometer (1).

5. The automatic sampling device for nuclear magnetic detection according to claim 1, characterized in that: The transmission assembly comprises a transmission rod (8) and a second gear (801); the transmission rod (8) is rotatably connected to the upper end of the nuclear magnetic resonance spectrometer (1) and is located between the mounting ring (6) and the rotating rod (9); the second gear (801) is fixedly connected to the upper end of the transmission rod (8); an inner tooth groove group (601) meshing with the second gear (801) is provided on the inner side of the mounting ring (6); a first transmission wheel (802) and a second transmission wheel (901) are fixedly connected to the transmission rod (8) and the rotating rod (9) respectively; the first transmission wheel (802) and the second transmission wheel (901) are connected via a transmission belt.

6. The automatic sampling device for nuclear magnetic detection according to claim 1, characterized in that: The outer surface of the temperature control tube (7) is coated with thermochromic powder.

Images