Automatic nuclear magnetic tube cleaning instrument and cleaning method

Abstract

The invention discloses an automatic nuclear magnetic tube cleaning instrument and cleaning method, comprising a solvent box, a nuclear magnetic tube support fixedly connected to the solvent box, a nuclear magnetic tube inserted in a conduit of the nuclear magnetic tube support, a pipeline A inserted in an outer wall of the nuclear magnetic tube support, and a first solvent pump inserted in the outer wall of the nuclear magnetic tube support through the provided pipeline A. The solvent box is in a negative pressure state, the nuclear magnetic tube is buckled on the nuclear magnetic tube support, the second solvent pump automatically cleans for one minute, pauses for thirty seconds, the first solvent pump automatically cleans for one minute, pauses for thirty seconds, and the second solvent pump is turned on again, after repeating five times, the second solvent pump cleans for one minute, and after evacuating for three minutes, it automatically cleans, the mixed solvent after cleaning is heated by a heating device for distillation treatment, the organic solvent is condensed and adsorbed on the arc-shaped shell, and finally flows to be collected in the solvent storage box, the organic solvent can be recovered by opening the solvent recovery port, the waste of volatile chemical reagents can be reduced, thereby preventing waste of resources and pollution of the environment.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical instruments, and in particular relates to an automatic nuclear magnetic tube cleaning instrument and a cleaning method. Background Art

[0002] After the sample test is completed, the sample tube needs to be cleaned in time. It should be cleaned immediately after the waste liquid is poured out, because once the solvent evaporates, the solid will be attached and it is difficult to wash off. The longer it is left, the more difficult it is to wash. The washing method can be acetone shaking method or nuclear magnetic tube cleaner; for difficult-to-clean sample tubes, special nuclear magnetic tube brushes can be used, and ordinary brushes must not be used to avoid scratching the sample tube. Ultrasonic cleaning may cause cracks that are difficult to find, so it is not recommended.

[0003] The existing manual cleaning method of NMR tubes takes a long time, has low cleaning efficiency, and wastes a lot of solvents. Therefore, there is an urgent need for an automatic cleaning device for NMR tubes to improve the cleaning efficiency of NMR tubes, recycle the organic solvent after cleaning, and avoid environmental pollution. Summary of the invention

[0004] The object of the present invention is to provide an automatic nuclear magnetic tube cleaning instrument and a cleaning method to solve the problems of the existing automatic nuclear magnetic tube cleaning instrument and a cleaning method proposed in the above background technology, that is, during use, manual cleaning takes a long time, is inefficient, and the solvent after cleaning is directly poured away.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an automatic nuclear magnetic tube cleaning instrument, comprising a solvent box, the solvent box is fixedly connected to a nuclear magnetic tube holder, the inner wall conduit of the nuclear magnetic tube holder is plugged with a nuclear magnetic tube, the outer wall of the nuclear magnetic tube holder is plugged with a pipeline A, the outer wall of the nuclear magnetic tube holder is plugged with a first solvent pump through the arranged pipeline A, the right side of the first solvent pump is plugged with a pipeline B, the right side of the first solvent pump is plugged with a distilled water storage bottle through the arranged pipeline B, the right side of the nuclear magnetic tube holder away from the top of the first solvent pump is plugged with a second solvent pump through the arranged pipeline A, the right side of the second solvent pump is plugged with a pipeline C, and the right side of the second solvent pump is plugged with an acetone storage bottle through the arranged pipeline C.

[0006] A solvent liquid drain valve is provided on the left side of the solvent box, a third solvent pump is connected to the left side of the solvent box, a pipe D is connected to the top of the third solvent pump, a filter device is connected to the top of the third solvent pump through the provided pipe D, a pipe E is connected to the bottom of the filter device, and a distillation box is connected to the bottom of the filter device through the provided pipe E.

[0007] Preferably, a vacuum port is provided on the front of the solvent box, and a control system is provided on the right end of the front of the solvent box away from the vacuum port.

[0008] Preferably, the tops of the distilled water storage bottle and the acetone storage bottle are both provided with solvent adding ports, and the front of the distillation box is provided with a solvent outlet.

[0009] Preferably, a first filter layer is inserted into the inner wall of the filter device, and the first filter layer is made of activated carbon material.

[0010] Preferably, a second filter layer is fixedly connected to the bottom end of the inner wall of the filter device away from the first filter layer, and the second filter layer is made of glass fiber.

[0011] Preferably, a solvent storage box is fixedly connected to the left side of the arc-shaped housing, and a solvent recovery port is provided on the top of the solvent storage box for recovering the solvent.

[0012] Preferably, a heating device is fixedly mounted on the outer wall of the distillation box, and an arc-shaped outer shell is fixedly connected to the top of the distillation box.

[0013] A cleaning method for an automatic nuclear magnetic tube cleaning instrument is as follows:

[0014] S1. Control the control system start device, extract the air in the solvent box through the vacuum port, so that the solvent box is in a negative pressure state, the six NMR tubes are inverted on the NMR tube support guide tube, turn on the start button, the second solvent pump is automatically turned on, and acetone is extracted from the acetone storage bottle through the acetone pipeline for cleaning for one minute;

[0015] S2, after pausing for thirty seconds, the first solvent pump automatically starts to draw water from the distilled water storage bottle through the water supply pipe, and washes for one minute. After pausing for thirty seconds, the second solvent pump automatically starts again to draw acetone from the acetone storage bottle through the acetone pipe;

[0016] S3, after repeating this process five times, the second solvent pump is turned on for one minute, and after pumping for three minutes, the automatic cleaning is completed. The cleaned water is pumped into the filter device by the third solvent pump, filtered by the first filter layer and the second filter layer, and then flows into the distillation box;

[0017] S4. The heating device heats and distills. The solvent is adsorbed on the arc-shaped shell after condensation and flows back into the solvent storage box. The acetone distilled inside can be cleaned out by opening the solvent recovery port.

[0018] Preferably, the control system is connected to each device via a power cord to facilitate control of the device, and the solvent box can be placed in a negative pressure state through the vacuum port.

[0019] Preferably, the washed acetone is mixed with water, and based on the different boiling points of acetone and water, the two can be separated by solvent distillation.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The solvent box is in a negative pressure state, six NMR tubes are inverted on the NMR tube holder, the start button is turned on, the second solvent pump automatically starts to clean for one minute, pauses for thirty seconds, the first solvent pump automatically starts to clean for one minute, pauses for thirty seconds, the second solvent pump automatically starts again, repeats this five times, the second solvent pump starts to clean for one minute, and after three minutes of vacuuming, it automatically cleans, with high cleaning efficiency.

[0022] 2. After automatic cleaning, the cleaned water is pumped into the filter device by the third solvent pump, filtered by the first filter layer and the second filter layer, and then flows into the distillation box. The heating device heats the water for distillation, condenses the water and adsorbs it onto the arc-shaped outer shell, and then flows into the solvent storage box. This can effectively recover the solvent, reduce resource waste, and prevent resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the axial stereoscopic structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0025] Figure 3 It is a partial cross-sectional structural schematic diagram of the present invention;

[0026] Figure 4 It is a schematic diagram of the principle diagram of the present invention.

[0027] In the figure: 1. solvent box; 2. vacuum port; 3. control system; 4. distilled water storage bottle; 5. solvent addition port; 6. first solvent pump; 7. second solvent pump; 8. nuclear magnetic tube; 9. nuclear magnetic tube support; 10. filtering device; 11. arc-shaped shell; 12. solvent recovery port; 13. solvent storage box; 14. distillation box; 15. solvent outlet; 16. heating device; 17. third solvent pump; 18. solvent liquid drain valve; 19. first filter layer; 20. second filter layer; 21. acetone storage bottle. DETAILED DESCRIPTION

[0028] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-3The present invention provides a technical solution: an automatic nuclear magnetic tube cleaning instrument, comprising a solvent box 1, a nuclear magnetic tube holder 9 is fixedly connected to the solvent box 1, a nuclear magnetic tube 8 is plugged into the inner wall of the nuclear magnetic tube holder 9, a pipeline A is plugged into the outer wall of the nuclear magnetic tube holder 9, a first solvent pump 6 is plugged into the outer wall of the nuclear magnetic tube holder 9 through the arranged pipeline A, a pipeline B is plugged into the right side of the first solvent pump 6, a distilled water storage bottle 4 is plugged into the right side of the first solvent pump 6 through the arranged pipeline B, a second solvent pump 7 is plugged into the top of the right side of the nuclear magnetic tube holder 9 away from the first solvent pump 6 through the arranged pipeline A, a pipeline C is plugged into the right side of the second solvent pump 7, and an acetone storage bottle 21 is plugged into the right side of the second solvent pump 7 through the arranged pipeline C.

[0030] In this embodiment, the solvent box 1 is in a negative pressure state, six nuclear magnetic tubes 8 are inverted on the nuclear magnetic tube holder 9, the start button is turned on, the second solvent pump 7 is automatically turned on for cleaning for one minute, and after a pause of thirty seconds, the first solvent pump 6 is automatically turned on for cleaning for one minute. After a pause of thirty seconds, the second solvent pump 7 is automatically turned on again. After repeating this five times, the second solvent pump 7 is turned on for cleaning for one minute, and after evacuating for three minutes, cleaning is automatically performed, and the cleaning efficiency is high.

[0031] A solvent liquid drain valve 18 is provided on the left side of the solvent box 1, a third solvent pump 17 is connected to the left side of the solvent box 1, a pipe D is connected to the top of the third solvent pump 17, a filter device 10 is connected to the top of the third solvent pump 17 through the provided pipe D, a pipe E is connected to the bottom of the filter device 10, and a distillation box 14 is connected to the bottom of the filter device 10 through the provided pipe E.

[0032] In this embodiment, the cleaning is completed automatically, and the cleaned solvent is pumped into the filter device 10 by the third solvent pump 17. After being filtered by the first filter layer 19 and the second filter layer 20, it flows into the distillation box 14. The heating device 16 heats it for distillation, adsorbs it onto the arc-shaped outer shell 11, and flows into the solvent storage box 13. The organic solvent can be recovered, which effectively reduces resource waste and prevents resource waste and environmental pollution.

[0033] Specifically, a vacuum port 2 is provided on the front of the solvent box 1 , and a control system 3 is provided on the right end of the front of the solvent box 1 away from the vacuum port 2 .

[0034] In this embodiment, there is a vacuum port 2 at the corresponding position of the upper right corner on the same side of the box body. This port can be connected to a vacuum line to generate a vacuum degree in the solvent box 1. Six thin copper nuclear magnetic tube supports 9 are arranged in a ring shape, and each is connected to the solvent box 1.

[0035] Specifically, the tops of the distilled water storage bottle 4 and the acetone storage bottle 21 are both provided with solvent adding ports 5 , and the front side of the distillation box 14 is provided with a solvent outlet 15 .

[0036] In this embodiment, water and acetone can enter the middle cleaning tank through the first solvent pump 6 and the second solvent pump 7 respectively, and the control system 3 is used to program the opening time of the first solvent pump 6 and the second solvent pump 7.

[0037] Specifically, a first filter layer 19 is inserted into the inner wall of the filter device 10 , and the first filter layer 19 is made of activated carbon material.

[0038] In this embodiment, the nuclear magnetic tube support 9 and the solvent box 1 are sealed and connected. There are six thin copper tubes on the nuclear magnetic tube support 9, and their diameter and length are smaller than the diameter and length of the nuclear magnetic tube 8, so that the nuclear magnetic tube 8 can be inserted upside down on the thin copper tube. The six thin copper tubes are arranged in a ring shape, each of which is connected to the solvent box 1. There is a copper tube with the same thickness as the copper tube in the middle. The copper tube is provided with a backflow pipe in the direction of each nuclear magnetic cleaning column. In addition, the copper tube is connected to the first solvent pump 6 and the second solvent pump 7. In this way, water and acetone can enter the middle solvent tube through the action of the solvent pump, and then be diverted to each cleaned nuclear magnetic tube 8 through the six guide pipes.

[0039] Specifically, the second filter layer 20 is fixedly connected to the bottom end of the inner wall of the filter device 10 away from the first filter layer 19, and the second filter layer 20 is made of glass fiber.

[0040] In this embodiment, during the entire cleaning process, the vacuum port 2 is connected to the vacuum line, so that the solvent passing through the pump and the guide tube can quickly pass through the cavity of the nuclear magnetic tube 8 under the action of vacuum to take away the residual liquid and clean the solid.

[0041] Specifically, a solvent storage box 13 is fixedly connected to the left side of the arc-shaped housing 11 , and a solvent recovery port 12 is opened on the top of the solvent storage box 13 .

[0042] In this embodiment, the solvent storage tank 13 can store the distilled solvent.

[0043] Specifically, a heating device 16 is fixedly installed on the outer wall of the distillation box 14 , and the top of the distillation box 14 is fixedly connected with the arc-shaped outer shell 11 .

[0044] In this embodiment, the heating device 16 can heat the device, and the arc-shaped housing 11 can condense and guide the recovery of the distillation solvent.

[0045] A cleaning method for an automatic nuclear magnetic tube cleaning instrument:

[0046] S1, control the control system 3 to start the device, extract the air in the solvent box 1 through the vacuum port 2, so that the solvent box 1 is in a negative pressure state, the six nuclear magnetic tubes 8 are inverted on the nuclear magnetic tube support 9 guide tube, turn on the start button, the second solvent pump 7 is automatically turned on, and acetone is extracted from the acetone storage bottle 21 through the acetone pipeline for cleaning for one minute;

[0047] S2, after pausing for thirty seconds, the first solvent pump 6 automatically starts to pump water from the distilled water storage bottle 4 through the water supply pipe for cleaning for one minute, and after pausing for thirty seconds, the second solvent pump 7 automatically starts again to pump acetone from the acetone storage bottle 21 through the acetone pipe;

[0048] S3, after repeating this five times, the second solvent pump 7 is turned on for one minute, and after pumping for three minutes, the automatic cleaning is completed, and the cleaned solvent is pumped into the filter device 10 by the third solvent pump 17, filtered by the first filter layer 19 and the second filter layer 20, and then flows into the distillation box 14;

[0049] S4, the heating device 16 heats and distills, adsorbs onto the arc-shaped housing 11, and flows into the solvent storage box 13. The solvent recovery port 12 is opened to clean out the acetone distilled inside.

[0050] In this embodiment, the flow of the solvent is as follows: pure water first enters the interior of the solvent box 1 from the interior of the storage screen 4, and acetone enters the interior of the solvent box 1 from the interior of the acetone storage bottle 21. After cleaning, the solvent enters the interior of the filter device 10, and the filtered solvent finally enters the interior of the distillation box 14. After distillation, the solvent enters the interior of the solvent storage box 13.

[0051] Specifically, the control system 3 is connected to various devices through a power line to facilitate the control of the devices, and the solvent box 1 can be placed in a negative pressure state through the vacuum port 2.

[0052] Specifically, the washed acetone is mixed with water, and due to the different boiling points of acetone and water, they can be separated by distillation.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for cleaning a nuclear magnetic resonance tube using an automatic nuclear magnetic resonance tube cleaner: S1, control the control system (3) to start the device, extract the air in the solvent box (1) through the vacuum port (2), so that the solvent box (1) is in a negative pressure state, the six nuclear magnetic tubes (8) are inverted on the guide tube of the nuclear magnetic tube holder (9), and the start button is turned on. The second solvent pump (7) is automatically turned on, and acetone is extracted from the acetone storage bottle (21) through the acetone pipeline, and cleaning is carried out for one minute; S2, after pausing for thirty seconds, the first solvent pump (6) automatically starts to pump water from the distilled water storage bottle (4) through the water supply pipe for cleaning for one minute. After pausing for thirty seconds, the second solvent pump (7) automatically starts again to pump acetone from the acetone storage bottle (21) through the acetone pipe; S3, after repeating this process five times, the second solvent pump (7) is turned on for one minute for cleaning, and after evacuating for three minutes, the automatic cleaning is completed. The cleaned water is pumped into the filter device (10) by the third solvent pump (17), filtered by the first filter layer (19) and the second filter layer (20), and then flows into the distillation box (14); S4, the heating device (16) heats and distills, adsorbs onto the arc-shaped housing (11), flows into the solvent storage box (13), and opens the solvent recovery port (12) to clean out the acetone distilled inside; The automatic nuclear magnetic tube cleaning instrument comprises a solvent box (1), the solvent box (1) is fixedly connected to a nuclear magnetic tube holder (9), the inner wall conduit of the nuclear magnetic tube holder (9) is plugged with a nuclear magnetic tube (8), the outer wall of the nuclear magnetic tube holder (9) is plugged with a pipeline A, the outer wall of the nuclear magnetic tube holder (9) is plugged with a first solvent pump (6) through the provided pipeline A, the right side of the first solvent pump (6) is plugged with a pipeline B, the right side of the first solvent pump (6) is plugged with a distilled water storage bottle (4) through the provided pipeline B, the right side of the nuclear magnetic tube holder (9) is plugged with a second solvent pump (7) through the provided pipeline A at the top away from the first solvent pump (6), the right side of the second solvent pump (7) is plugged with a pipeline C, and the right side of the second solvent pump (7) is plugged with an acetone storage bottle (21) through the provided pipeline C; A solvent drain valve (18) is provided on the left side of the solvent box (1), a third solvent pump (17) is plugged into the left side of the solvent box (1), a pipeline D is plugged into the top of the third solvent pump (17), a filter device (10) is plugged into the top of the third solvent pump (17) through the provided pipeline D, a pipeline E is plugged into the bottom of the filter device (10), and a distillation box (14) is plugged into the bottom of the filter device (10) through the provided pipeline E; The front side of the solvent box (1) is provided with a vacuum port (2), and the right end of the front side of the solvent box (1) away from the vacuum port (2) is provided with a control system (3).

2. The method for cleaning a nuclear magnetic tube using an automatic nuclear magnetic tube cleaning instrument according to claim 1, characterized in that: The control system (3) is connected to each device via a power line to facilitate the control of the devices, and is used to place the solvent box (1) in a negative pressure state via the vacuum port (2).

3. The method for cleaning a nuclear magnetic tube using an automatic nuclear magnetic tube cleaning instrument according to claim 1, characterized in that: The cleaned acetone is mixed with water, and based on the different boiling points of acetone and water, the two can be separated by solvent distillation.

4. An automatic nuclear magnetic tube cleaning instrument, characterized in that: Used to perform the cleaning method according to any one of claims 1 to 3, the tops of the distilled water storage bottle (4) and the acetone storage bottle (21) are each provided with a solvent addition port (5), and the front of the distillation box (14) is provided with a solvent outlet (15).

5. An automatic nuclear magnetic tube cleaning instrument according to claim 4, characterized in that: A first filter layer (19) is inserted into the inner wall of the filter device (10), and the first filter layer (19) is made of activated carbon material.

6. The automatic nuclear magnetic tube cleaning instrument according to claim 5, characterized in that: A second filter layer (20) is fixedly connected to the bottom end of the inner wall of the filter device (10) away from the first filter layer (19), and the second filter layer (20) is made of glass fiber.

7. An automatic nuclear magnetic tube cleaning instrument according to claim 4, characterized in that: A heating device (16) is fixedly mounted on the outer wall of the distillation box (14), and an arc-shaped outer shell (11) is fixedly connected to the top of the distillation box (14).

8. An automatic nuclear magnetic tube cleaning instrument according to claim 7, characterized in that: A solvent storage box (13) is fixedly connected to the left side of the arc-shaped housing (11), and a solvent recovery port (12) is provided on the top of the solvent storage box (13).

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