NMR tube cleaning device

Abstract

The present application relates to experimental equipment cleaning device technical field, specifically to nuclear magnetic tube cleaning device, including liquid storage tank, connecting assembly and cleaning tank, connecting assembly includes shell, three-way switch valve arranged in shell, backflow pump arranged outside shell, cleaning tank is provided with nuclear magnetic tube to be cleaned, ultrasonic cleaning probe is arranged on the inner wall of cleaning tank, liquid storage tank is arranged at the top of connecting assembly, cleaning tank is arranged at the bottom of connecting assembly, liquid storage tank, backflow pump and nuclear magnetic tube to be cleaned are connected with three-way switch valve through pipeline, backflow pump is also connected with liquid storage tank through pipeline, the present application adopts three-stage connection mode, so that the present application has simple structure, convenient operation, good cleaning effect, and its use cost is not high, and the price is low, very suitable for small batch nuclear magnetic tube cleaning task under laboratory environment.

Description

Technical Field

[0001] This invention relates to the field of laboratory equipment cleaning technology, specifically to a nuclear magnetic resonance tube cleaning device. Background Technology

[0002] In the field of chemical research, particularly in organic chemistry and biochemistry, nuclear magnetic resonance (NMR) technology serves as an important detection method for characterizing relevant substances. Due to the extremely high sensitivity of NMR detection, the cleanliness requirements for the NMR tube are also very high. If the cleanliness of the NMR tube does not meet experimental requirements, it will negatively impact image quality, clarity, and signal-to-noise ratio, and may even damage the equipment. Furthermore, because NMR tubes are relatively expensive, they cannot be used as disposable consumables. Therefore, NMR tubes in laboratories are currently cleaned after each use for reuse.

[0003] However, the cleaning equipment currently on the market is often extremely expensive due to its complex engineering design. In addition, such equipment is usually complex in structure, requires many operations, and is large in size, making it unsuitable for small-batch NMR tube cleaning tasks. Summary of the Invention

[0004] In view of the technical problems existing in the prior art, the purpose of this invention is to provide a nuclear magnetic resonance tube cleaning device. This device has a simple structure, is easy to operate, has a good cleaning effect, and has low operating cost and low price, making it suitable for small-batch nuclear magnetic resonance tube cleaning tasks in a laboratory environment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A nuclear magnetic resonance (NMR) tube cleaning device includes a storage tank, a connecting assembly, and a cleaning tank. The connecting assembly includes a housing, a three-way switching valve disposed within the housing, and a reflux pump disposed outside the housing. The cleaning tank contains the NMR tube to be cleaned, and an ultrasonic cleaning probe is disposed on the inner wall of the cleaning tank. The storage tank is located at the top of the connecting assembly, and the cleaning tank is located at the bottom of the connecting assembly. The storage tank, the reflux pump, and the NMR tube to be cleaned are all connected to the three-way switching valve via pipes, and the reflux pump is also connected to the storage tank via a pipe.

[0007] Furthermore, the liquid storage tank is provided with an inlet, a reflux inlet, and an outlet. The inlet and reflux inlet are located at the top of the liquid storage tank, and the outlet is located at the bottom center of the liquid storage tank. The reflux inlet is connected to a reflux pump through a pipe, and the outlet is connected to a three-way switching valve through a pipe.

[0008] Furthermore, the storage tank is also equipped with a filter screen, which is located above the liquid outlet and below the liquid inlet and the return liquid inlet.

[0009] Furthermore, there are at least four ultrasonic cleaning probes, which are arranged in a ring around the inner wall of the cleaning tank at equal intervals.

[0010] Furthermore, the cleaning tank is equipped with a nuclear magnetic resonance tube fixing plate, which has multiple round holes for inserting nuclear magnetic resonance tubes. The nuclear magnetic resonance tube fixing plate is made of elastic material.

[0011] Furthermore, both the storage tank and the cleaning tank are detachably connected to the housing.

[0012] Furthermore, the three-way switching valve also includes a switching wrench, which is disposed outside the housing; the switching wrench is used to control the hydraulic circuit switching of the three-way switching valve.

[0013] Furthermore, the NMR tube to be cleaned is provided with an NMR tube cap, the NMR tube cap is provided with a through hole in the middle, the NMR tube cap is made of elastic material, a flexible tube passes through the through hole, one end of the flexible tube is set at the bottom of the NMR tube, and the other end of the flexible tube is connected to a pipe through a conversion connector, and the pipe is connected to a three-way switching valve.

[0014] Furthermore, the adapter is available in various models corresponding to different numbers of hose connectors, with the hose connectors connected to one end of the hose.

[0015] Furthermore, the reflux pump is a miniature water-air dual-purpose pump.

[0016] In summary, the present invention has the following advantages:

[0017] 1. By setting up a cleaning tank, the MRI tube can be effectively cleaned by ultrasound. Furthermore, the MRI tube is placed on an MRI tube fixing plate made of elastic material, which can effectively clamp and fix the MRI tube, and also reduces the resonance effect of ultrasonic cleaning on the MRI tube to a certain extent.

[0018] 2. By setting up a three-way switching valve, the liquid storage tank, the reflux pump and the NMR tube are connected, which enables the cleaning solution to be recycled and the NMR tube to be cleaned repeatedly, resulting in a good cleaning effect.

[0019] 3. The present invention adopts a three-section connection method, which makes the structure of the present invention simple, easy to operate, and inexpensive, making it very suitable for small-batch NMR tube cleaning tasks in laboratory environments.

[0020] 4. Multiple types of adapters are provided, each type corresponding to a different number of hose connectors, for connecting different numbers of hoses and cleaning the corresponding number of NMR tubes. When in use, simply replace the adapter with the corresponding type according to the number of NMR tubes. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention.

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 This is a partially enlarged view of the conversion wrench of the present invention.

[0024] Figure 4 This is a cross-sectional view of the nuclear magnetic resonance tube and flexible tube of the present invention.

[0025] Among them, 1 is the liquid storage tank, 11 is the liquid inlet, 12 is the reflux liquid inlet, 13 is the liquid outlet, 14 is the filter screen, 2 is the connecting assembly, 21 is the three-way switching valve, 211 is the conversion wrench, 22 is the reflux pump, 23 is the housing, 3 is the cleaning tank, 31 is the ultrasonic cleaning probe, 32 is the NMR tube fixing plate, 321 is the round hole, 4 is the NMR tube, 41 is the flexible NMR tube cap, 42 is the conversion connector, and 43 is the flexible hose. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1-4 As shown, the NMR tube cleaning device includes a storage tank, a connecting assembly, and a cleaning tank. The connecting assembly includes a housing, a three-way switching valve disposed within the housing, and a reflux pump disposed outside the housing. The cleaning tank contains the NMR tube to be cleaned, and an ultrasonic cleaning probe is disposed on the inner wall of the cleaning tank. The storage tank is disposed at the top of the connecting assembly, and the cleaning tank is disposed at the bottom of the connecting assembly. The storage tank, the reflux pump, and the NMR tube to be cleaned are all connected to the three-way switching valve via pipes, and the reflux pump is also connected to the storage tank via a pipe.

[0028] Specifically, the three-way switching valve can selectively connect the NMR tube to the storage tank or the reflux pump, allowing liquid to flow into the NMR tube or be drawn out by the reflux pump.

[0029] like Figure 2 As shown, the liquid storage tank is equipped with an inlet, a reflux inlet, and an outlet. The inlet and reflux inlet are located at the top of the tank, while the outlet is located at the bottom center. The reflux inlet is connected to a reflux pump via a pipe, and the outlet is connected to a three-way switching valve via a pipe. A filter screen is also installed inside the tank, positioned above the outlet and below the inlet and reflux inlet.

[0030] Specifically, the cleaning fluid is stored in the storage tank, and the filter screen is set above the outlet and below the inlet and return inlet. It can filter out solid impurities that appear during the cleaning process and prevent solid impurities from mixing into the cleaning fluid and clogging the pipeline.

[0031] The cleaning tank has an NMR tube fixing plate located at the upper part of its interior. The NMR tube fixing plate has multiple round holes for inserting the NMR tube and is made of an elastic material.

[0032] Specifically, the MRI tube fixing plate is made of rubber, which has a certain degree of elasticity. The diameter of the circular hole on the fixing plate is slightly smaller than the outer diameter of the MRI tube. When the MRI tube is inserted into the circular hole, the elasticity of the fixing plate can further clamp and fix the MRI tube, stabilizing it and preventing collisions when multiple MRI tubes are inserted for cleaning. In addition, the fixing plate, made of elastic material, can reduce the damage to the MRI tube caused by resonance during ultrasonic cleaning to a certain extent.

[0033] In this embodiment, four ultrasonic cleaning probes are arranged in a ring around the inner wall of the cleaning tank with equal intervals. In other embodiments, multiple ultrasonic cleaning probes can be used as needed for the cleaning task.

[0034] The ring-shaped probes can generate denser bubbles more evenly in the cleaning solution. These bubbles can cover every tiny area of ​​the surface being cleaned, resulting in a more comprehensive and efficient cleaning effect. At the same time, the ring-shaped probes can easily reach every position on each NMR tube, achieving consistently high-quality cleaning.

[0035] like Figure 3 As shown, the three-way switching valve also includes a switching wrench, which is located outside the housing; the switching wrench is used to control the hydraulic circuit switching of the three-way switching valve.

[0036] Specifically, by controlling the liquid circuit switching of the three-way switching valve with a conversion wrench, the liquid storage tank, the three-way switching valve, and the NMR tube are connected in sequence, or the NMR tube, the three-way switching valve, the reflux pump, and the liquid storage tank are connected in sequence. This allows the cleaning fluid in the liquid storage tank to flow smoothly into the NMR tube, and also allows the reflux pump to draw the cleaning fluid from the NMR tube, facilitating the recycling of the cleaning fluid and ensuring that the NMR tube can be cleaned repeatedly.

[0037] like Figure 4As shown, the NMR tube to be cleaned is equipped with an NMR tube cap. The NMR tube cap has a through hole in the center and is made of elastic material. A flexible tube passes through the through hole, with one end of the tube positioned at the bottom of the NMR tube. The other end of the tube is connected to a conduit via a conversion connector. The conduit is connected to a three-way switching valve. The conversion connectors are available in various models to accommodate different numbers of flexible tube connectors. Each flexible tube connector is connected to one end of the flexible tube. In this embodiment, the conversion connector has only one flexible tube connector, allowing one NMR tube to be cleaned. When cleaning a different number of NMR tubes, the corresponding model of conversion connector is used.

[0038] Specifically, the flexible tube extends to the bottom of the MRI tube, allowing the cleaning fluid to be injected from the bottom and also enabling the reflux pump to draw the cleaning fluid out from the bottom, ensuring that all the cleaning fluid is removed. The MRI tube cap, made of elastic material, provides a good seal for the MRI tube. The through-hole in the middle allows the flexible tube to pass through, and the elasticity of the cap ensures that the tube is well secured and maintains a tight seal.

[0039] In this embodiment, a miniature water-air dual-purpose pump is used as the reflux pump. During the suction of the cleaning fluid from the NMR tube, the miniature water-air dual-purpose pump creates a negative pressure within the NMR tube, allowing for a faster influx of cleaning fluid subsequently. This ensures smooth circulation of the cleaning fluid.

[0040] The operation steps of this invention are as follows:

[0041] S1: Pour out the residual working fluid in the NMR tube to be cleaned, add tap water to the cleaning tank, then insert the NMR tube into the NMR tube fixing plate, pass the tubing through the NMR tube cap beforehand, then tighten the NMR tube cap onto the NMR tube, and put the installed NMR tube fixing plate and NMR tube into the cleaning tank.

[0042] S2: Select the model of the adapter, connect the upper end of the hose, the adapter, and the three-way valve line in sequence, then connect the return pump to the three-way connector, the three-way connector to the storage tank, and the storage tank to the return pump. Finally, install the storage tank and the cleaning tank on the top and bottom of the connection assembly, respectively.

[0043] S3: Fill the appropriate cleaning solution into the inlet of the storage tank;

[0044] S4: Adjust the conversion wrench to connect the liquid outlet and the NMR tube, so that the cleaning fluid flows into the NMR tube;

[0045] S5: Turn on the ultrasonic cleaning probe and clean the MRI tube for 3-5 minutes;

[0046] S6: After cleaning, adjust the conversion wrench to connect the reflux pump and the NMR tube, turn on the reflux pump to pump the cleaning solution into the storage tank, and filter the impurities in the cleaning solution through the filter screen;

[0047] S7: Repeat steps S4, S5, and S6 three times to complete the cleaning of the NMR tube;

[0048] S8: Dry the NMR tube. Take out the NMR tube after cleaning and store it properly for later use.

[0049] In summary, this invention, through the inclusion of a liquid storage unit, connecting components, and a cleaning tank, enables the device to perform ultrasonic cleaning of NMR tubes. A three-way switching valve controls the flow of the cleaning solution, allowing for its recycling and repeated cleaning of the NMR tubes. This significantly improves the cleaning efficiency for small batches of NMR tubes, reduces cleaning costs, and meets the cleaning needs of NMR tubes under laboratory conditions. The NMR tube fixing plate, made of elastic material, secures the NMR tubes and mitigates the impact of ultrasonic cleaning on NMR tube resonance to some extent. The three-section connection method of this invention results in a simple structure, convenient operation, and low operating costs, making it highly suitable for small-batch NMR tube cleaning tasks in laboratory environments.

[0050] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A nuclear magnetic resonance tube cleaning device, characterized in that: The system includes a storage tank, a connecting assembly, and a cleaning tank. The connecting assembly includes a housing, a three-way switching valve disposed within the housing, and a reflux pump disposed outside the housing. The cleaning tank contains an NMR tube to be cleaned, and an ultrasonic cleaning probe is disposed on the inner wall of the cleaning tank. The storage tank is located at the top of the connecting assembly, and the cleaning tank is located at the bottom of the connecting assembly. The storage tank, the reflux pump, and the NMR tube to be cleaned are all connected to the three-way switching valve via pipes, and the reflux pump is also connected to the storage tank via a pipe. The nuclear magnetic resonance tube to be cleaned is provided with a nuclear magnetic resonance tube cap. The nuclear magnetic resonance tube cap is provided with a through hole in the middle. The nuclear magnetic resonance tube cap is made of elastic material. A flexible tube passes through the through hole. One end of the flexible tube is located at the bottom of the nuclear magnetic resonance tube. The other end of the flexible tube is connected to a pipe through a conversion connector. The pipe is connected to a three-way switching valve. The reflux pump is a miniature water-air dual-purpose pump; The liquid storage tank is provided with an inlet, a reflux inlet, and an outlet. The inlet and reflux inlet are located at the top of the liquid storage tank, and the outlet is located at the bottom center of the liquid storage tank. The reflux inlet is connected to a reflux pump through a pipe, and the outlet is connected to a three-way switching valve through a pipe. The storage tank is also equipped with a filter screen, which is located above the liquid outlet and below the liquid inlet and the return liquid inlet.

2. The nuclear magnetic resonance tube cleaning device according to claim 1, characterized in that: The ultrasonic cleaning probes are at least four in number and are arranged in a ring around the inner wall of the cleaning tank at equal intervals.

3. The nuclear magnetic resonance tube cleaning apparatus according to claim 1, characterized in that: The cleaning tank is equipped with a nuclear magnetic resonance tube fixing plate, which has multiple round holes for inserting nuclear magnetic resonance tubes. The nuclear magnetic resonance tube fixing plate is made of elastic material.

4. The nuclear magnetic resonance tube cleaning apparatus according to claim 1, characterized in that: Both the storage tank and the cleaning tank are detachably connected to the shell.

5. The nuclear magnetic resonance tube cleaning apparatus according to claim 1, characterized in that: The three-way switching valve also includes a switching wrench, which is located outside the housing; the switching wrench is used to control the hydraulic circuit switching of the three-way switching valve.

6. The nuclear magnetic resonance tube cleaning apparatus according to claim 1, characterized in that: The adapter is available in various models to accommodate different numbers of hose connectors, and the hose connectors are connected to one end of the hose.

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