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CN-224216409-U - Nuclear magnetic tube injector heating device of nuclear magnetic resonance spectrometer

CN224216409UCN 224216409 UCN224216409 UCN 224216409UCN-224216409-U

Abstract

The utility model discloses a nuclear magnetic tube sample injector heating device of a nuclear magnetic resonance spectrometer, which can heat and preserve heat of a nuclear magnetic tube. The nuclear magnetic resonance tube sample injector heating device of the nuclear magnetic resonance spectrometer comprises a heating device arranged in a sample injector of the nuclear magnetic resonance spectrometer, wherein the sample injector comprises a machine body, the machine body is provided with a turntable mounting cavity, a driving device mounting cavity is arranged below the turntable mounting cavity, the turntable mounting cavity and the driving device mounting cavity are separated by a partition plate, a first turntable and a second turntable are sequentially arranged in the turntable mounting cavity from top to bottom, the heating device comprises an annular heating piece arranged on the partition plate, air holes are formed in the second turntable, heat conducting rods uniformly distributed along the circumference are arranged on the second turntable, and the lower ends of the heat conducting rods extend to the upper side of the partition plate through the second turntable. The device can always keep the liquid nuclear magnetic sample in the nuclear magnetic tube in a liquid state, and ensure that the detection is carried out smoothly.

Inventors

  • HE CHAO
  • LI YANMEI
  • ZHANG MINGHUA
  • ZHOU TIANNAN
  • YANG CHANGYUE

Assignees

  • 四川大学

Dates

Publication Date
20260508
Application Date
20250331

Claims (7)

  1. 1. The nuclear magnetic resonance spectrometer nuclear magnetic resonance tube sample injector heating device is characterized by comprising a heating device arranged in a sample injector (200) on the nuclear magnetic resonance spectrometer (100); The sample injection device (200) comprises a machine body (210), wherein the machine body (210) is provided with a turntable mounting cavity, a driving device mounting cavity (211) is arranged below the turntable mounting cavity, and the turntable mounting cavity and the driving device mounting cavity (211) are separated by a partition plate (240); The rotary table mounting cavity is internally provided with a first rotary table (220) and a second rotary table (230) from top to bottom in sequence, a space is reserved between the first rotary table (220) and the second rotary table (230), mounting holes uniformly distributed along the circumference are formed in the first rotary table (220), through holes which are in one-to-one correspondence with the mounting holes of the first rotary table (220) are formed in the second rotary table (230), and a driving device (250) for driving the first rotary table (220) and the second rotary table (230) to rotate is arranged below the partition plate (240); A nuclear magnetic tube storage cylinder (280) is arranged in the mounting hole on the first turntable (220), openings are formed at two ends of the nuclear magnetic tube storage cylinder (280), and the lower end of the nuclear magnetic tube storage cylinder (280) passes through a through hole of the second turntable (230); The heating device comprises an annular heating piece (260) arranged on a partition plate (240), ventilation holes (232) are formed in the second rotary plate (230), heat conducting rods (231) which are uniformly distributed along the circumference are arranged on the second rotary plate (230), and the lower ends of the heat conducting rods (231) penetrate through the second rotary plate (230) and extend to the position above the partition plate (240).
  2. 2. The nuclear magnetic resonance spectrometer nuclear magnetic resonance tube injector heating device according to claim 1, wherein the annular heating element (260) comprises an annular heating resistor (261) and a radiating fin (262) arranged on the annular heating resistor (261); a temperature sensor is arranged in the turntable mounting cavity, and a display for displaying the temperature detected by the temperature sensor is arranged on the machine body (210).
  3. 3. The nuclear magnetic resonance spectrometer nuclear magnetic resonance tube sample injector heating device according to claim 2, wherein a vertical cavity (212) is arranged on one side of the turntable mounting cavity, and the bottom of the vertical cavity (212) is separated from the driving device mounting cavity (211) through a second separator (213); A first vent hole and a second vent hole (214) which are communicated with the vertical cavity (212) are formed in one side of the turntable mounting cavity; The first ventilation hole and the second ventilation hole (214) are respectively positioned above and below the second turntable (230), and a small exhaust fan (215) is arranged in the first ventilation hole.
  4. 4. The nuclear magnetic resonance spectrometer nuclear magnetic resonance tube sample injector heating device according to claim 2, wherein an annular groove (241) is formed in a partition plate (240) at the bottom of an inner cavity of the machine body (210), annular heating pieces (260) are arranged on the outer side and the inner side of the annular groove (241), and one end of the heat conducting rod (231) extends into the annular groove (241).
  5. 5. The nuclear magnetic resonance spectrometer nuclear magnetic resonance tube injector heating device according to claim 1, wherein the heat conducting rod (231) is a copper rod.
  6. 6. The nuclear magnetic resonance spectrometer nuclear magnetic resonance tube injector heating device according to claim 1, wherein a heat insulation cylinder (290) is arranged between the first rotary plate (220) and the second rotary plate (230).
  7. 7. The nuclear magnetic resonance spectrometer nuclear magnetic resonance tube injector heating device according to claim 1, wherein a heat insulation layer is arranged on the inner wall of the machine body (210).

Description

Nuclear magnetic tube injector heating device of nuclear magnetic resonance spectrometer Technical Field The utility model relates to the technical field of heat preservation and heating of nuclear magnetic resonance tube sample injection devices, in particular to a nuclear magnetic resonance tube sample injection device heating device of a nuclear magnetic resonance spectrometer. Background Nuclear magnetic resonance spectroscopy is a precision instrument that uses the magnetic resonance phenomenon of nuclei in a magnetic field to analyze the molecular structure, chemical environment, and dynamic behavior of a substance. It has wide application in the fields of chemistry, biology, material science, medicine research and development, etc. The nuclear magnetic resonance spectrometer is provided with various specifications of sample injectors, such as 24 Kong Jinyang devices, 60 Kong Jinyang devices and the like. The existing sample injector is characterized in that a storage tube is arranged in a storage hole of the sample injector, then a limit sleeve is sleeved at the upper end of the nuclear magnetic tube, the nuclear magnetic tube is placed in the storage tube, and the positioning of the nuclear magnetic tube in the storage tube is realized through the limit sleeve. When the nuclear magnetic resonance spectrometer is used to detect the liquid nuclear magnetic sample, various deuterated reagents are used for the liquid nuclear magnetic sample, and common deuterated reagents include deuterated chloroform, heavy water, deuterated DMSO, deuterated acetone, deuterated acetonitrile, deuterated benzene, deuterated methanol, deuterated pyridine, deuterated dichloromethane, and the like. Because the melting points of various liquid nuclear magnetic samples are different, when the liquid nuclear magnetic samples are detected in a large environment with lower temperature (such as winter), the liquid nuclear magnetic samples are easy to become solid because the melting point of part of the liquid nuclear magnetic samples is higher than the ambient temperature (such as the deuterated DMSO melting point is about 20.2 ℃), and the test is failed. Because the existing sample injector can only store the nuclear magnetic tube, the heat preservation and the heating of the nuclear magnetic tube cannot be realized. Therefore, when the liquid nuclear magnetic sample is detected in an environment with lower temperature, the temperature needs to be raised indoors by an air conditioner (the indoor temperature raising effect is poor in the case of ventilation in winter), and a longer time is needed to meet the condition that the temperature of the detection environment is higher than the melting point of the liquid nuclear magnetic sample. Therefore, the adaptability of the equipment is reduced, so that the detection is difficult, and the detection can be performed only when the detection environment temperature is proper. Disclosure of utility model The utility model aims to solve the technical problem of providing the nuclear magnetic tube sample injector heating device of the nuclear magnetic resonance spectrometer, which can realize heating and heat preservation of the nuclear magnetic tube, always keep the liquid nuclear magnetic sample in the nuclear magnetic tube in a liquid state and ensure smooth detection. The utility model solves the technical problems by adopting the technical proposal that the nuclear magnetic resonance spectrometer nuclear magnetic tube sample injector heating device comprises a heating device arranged in a sample injector on the nuclear magnetic resonance spectrometer; The sample injection device comprises a machine body, wherein the machine body is provided with a rotary table mounting cavity, a driving device mounting cavity is arranged below the rotary table mounting cavity, and the rotary table mounting cavity and the driving device mounting cavity are separated by a partition plate; The rotary table mounting cavity is internally provided with a first rotary table and a second rotary table from top to bottom in sequence, a space is reserved between the first rotary table and the second rotary table, mounting holes which are uniformly distributed along the circumference are formed in the first rotary table, through holes which are in one-to-one correspondence with the first rotary table mounting holes are formed in the second rotary table, and a driving device for driving the first rotary table and the second rotary table to rotate is arranged below the partition plate; A nuclear magnetic tube storage cylinder is arranged in the mounting hole on the first turntable, openings are formed at two ends of the nuclear magnetic tube storage cylinder, and the lower end of the nuclear magnetic tube storage cylinder penetrates through a through hole of the second turntable; the heating device comprises an annular heating piece arranged on the partition board, air holes are formed in the second rotary table