Nuclear magnetic tube cleaning device

Abstract

The utility model relates to a nuclear magnetic tube cleaning device, which comprises a liquid storage bottle, a liquid inlet container for temporarily storing a solvent, a needle tube, a three-way valve and an air extractor, the liquid storage bottle is provided with at least two connecting ports, the liquid inlet container is arranged on one connecting port, the top end of the liquid inlet container is provided with a liquid inlet groove, and the liquid inlet groove is communicated with the liquid inlet groove. The needle tubes are arranged on the liquid inlet container in a penetrating mode, the diameter of each needle tube is smaller than the inner diameter of a nuclear magnetic tube, the liquid storage bottle is communicated with the outside through the needle tubes, the three-way valve is installed on a connecting port, the air extractor is arranged on one side of the liquid storage bottle, and the air extraction end of the air extractor is communicated with the three-way valve. A solvent enters the liquid inlet groove, the nuclear magnetic tube is arranged on the needle tube in a sleeving mode, and a tube opening of the nuclear magnetic tube is sealed by the solvent liquid. The cleaning device has the advantages of being convenient to operate and high in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical experimental equipment, in particular to a nuclear magnetic tube cleaning device. Background Art

[0002] NMR tubes are essential tools for determining the molecular structure of compounds using NMR spectra in the laboratory. Various factors can affect the NMR spectra of molecules, one of which is the NMR tube itself. After use, impurities may remain inside the tube. To prevent this from affecting subsequent use, the tube must be cleaned, requiring a tube cleaning device.

[0003] Chinese patent publication number CN202860942U discloses a nuclear magnetic resonance (NMR) tube cleaning bottle. The bottle comprises a long tube, a fastening nut, a ferrule, a ferrule connector, and a solvent bottle. The ferrule, ferrule, and ferrule connector form a ferrule connection, tightly connecting the long tube. The internal threads at the other end allow for a tight connection with the solvent bottle. This utility model enables rapid and efficient cleaning of NMR tubes, boasting a simple structure, ease of use, high reliability, and easy maintenance.

[0004] Regarding the related technologies mentioned above, in the prior art, the solvent bottle is squeezed to allow the internal solvent to enter the nuclear magnetic tube. The impurities in the nuclear magnetic tube are soaked for a period of time to achieve the effect of cleaning the inside of the nuclear magnetic tube. However, if the nozzle of the nuclear magnetic tube is facing downward, when the solvent in the solvent bottle contacts the impurities, the impurities have already contacted and mixed with the solvent. At this time, the solvent inside the solvent bottle and the solvent inside the nuclear magnetic tube are in a connected state, which makes it easy for waste liquid solvent to enter the solvent bottle, causing contamination of the remaining solvent and the inside of the solvent bottle. If the nozzle of the nuclear magnetic tube is facing downward, there is a possibility that the solvent will overflow from the nuclear magnetic tube when the solvent is poured in. If the waste liquid solvent is corrosive, the cleaning bottle structure will have a safety hazard. Utility Model Content

[0005] In order to solve the above problems, the present application provides a nuclear magnetic tube cleaning device.

[0006] This application provides a nuclear magnetic tube cleaning device using the following technical solutions:

[0007] A nuclear magnetic tube cleaning device comprises a liquid storage bottle, a liquid inlet container for temporarily storing solvent, a needle tube, a three-way valve and an air extraction device, wherein the liquid storage bottle is provided with at least two connecting ports, the liquid inlet container is installed on one of the connecting ports, a liquid inlet groove is provided on the top of the liquid inlet container, a plurality of needle tubes are passed through the liquid inlet container, the diameter of the needle tubes is smaller than the inner diameter of the nuclear magnetic tube, the liquid storage bottle is connected to the outside through the needle tubes, the three-way valve is installed on one connecting port, the air extraction device is provided on one side of the liquid storage bottle, and the air extraction end of the air extraction device is connected to the three-way valve. During cleaning, the solvent enters the liquid inlet groove, the nuclear magnetic tube is sleeved on the needle tube, and the solvent liquid seals the tube opening of the nuclear magnetic tube.

[0008] By adopting the above technical solution, during cleaning, the solvent is introduced into the liquid inlet tank, and the mouth of the NMR tube is sealed with liquid. Then, the vacuum device is activated to create a negative pressure inside the liquid storage bottle. The solvent in the liquid inlet tank moves in the gap between the NMR tube and the needle tube, and is sucked into the liquid storage bottle along with the top of the needle tube, achieving the effect of cleaning the inner wall of the NMR tube. By creating a negative pressure inside the liquid storage bottle, the needle can smoothly absorb the solvent. As the solvent moves, it flushes the inner wall of the NMR tube and finally enters the liquid storage bottle. Compared with the existing technology, the waste liquid solvent is separated into the liquid storage bottle, reducing the possibility of operator contact with the waste liquid solvent, improving the safety of the NMR tube cleaning device, and preventing the waste liquid solvent from contaminating the solvent source.

[0009] Optionally, the liquid inlet container is a rubber stopper.

[0010] By adopting the above technical solution, a rubber stopper is used as a liquid inlet container. Since the rubber material is convenient for installing the needle tube, the deformation of the rubber material can also be used to achieve the effect of sealing the needle tube. Other means of sealing the solvent can be omitted, which provides convenience for the installation of the needle tube.

[0011] Optionally, the liquid inlet container is a glass cover, and a first seal for sealing the solvent is provided between the liquid inlet container and the connecting port, a plurality of mounting holes are provided on the bottom wall of the liquid inlet tank, the needle tube is inserted into the mounting hole, and a second seal for preventing solvent leakage is provided between the needle tube and the mounting hole, a positioning step is provided on the mounting hole, and a plurality of leakage notches are provided at positions of the bottom wall of the liquid inlet tank corresponding to the mounting holes, and the leakage notches are connected to the mounting hole. During installation, the nozzle of the nuclear magnetic tube is inserted into the positioning step.

[0012] By adopting the above technical solution, during installation, the first sealing member is used to seal the gap between the liquid inlet container and the liquid storage bottle, the needle tube is inserted into the installation frame, and then the second sealing member is used to seal the gap between the needle tube and the installation hole. The positioning step is used to stabilize the nuclear magnetic tube, thereby achieving a sealed installation of the needle tube and the nuclear magnetic tube. When extracting the solvent, the solvent enters the nuclear magnetic tube through the leakage gap, reducing the possibility that the solvent cannot smoothly enter the interior of the nuclear magnetic tube.

[0013] Optionally, the first sealing member is a rubber tube, and a plurality of tightening rings are integrally formed on the surface of the first sealing member. A connecting column is connected to the liquid inlet container. When the liquid inlet container is installed, the first sealing member is sleeved on the connecting column, and the tightening ring presses against the inner wall of the connecting port.

[0014] By adopting the above technical solution, when installing the liquid inlet container, the tightening ring is used to tighten the inner wall of the connecting port to block the gap between the liquid inlet container and the connecting port, thereby achieving the effect of sealing the liquid inlet container and the connecting port.

[0015] Optionally, an inclined surface is provided at the top end of the needle tube.

[0016] By adopting the above technical solution, an inclined surface is provided at the top of the needle tube, so that a gap exists between the top surface of the needle tube and the top wall of the nuclear magnetic tube, so that the solvent can enter the needle tube smoothly, reducing the possibility of solvent blockage or slow flow.

[0017] Optionally, a support frame is provided on one side of the liquid storage bottle, and the support frame includes a base and a main rod, the main rod is vertically connected to the base, two lifting sleeves are provided on the main rod, and one side of the lower lifting sleeve is threaded with a tightening bolt, and the tightening bolt presses against the side wall of the main rod, and a stabilizing component for stabilizing the liquid storage bottle is provided on the lower lifting sleeve, and a separating funnel is installed on the upper lifting sleeve, and the liquid outlet end of the separating funnel faces the liquid inlet tank, and the separating funnel is used to store the solvent.

[0018] By adopting this technical solution, the stability of the liquid storage bottle body depends on its shape. If the bottom of the liquid storage bottle is arc-shaped, it is necessary to stabilize the liquid storage bottle to ensure smooth reception of waste liquid solvent. The cooperation between the base and the main rod provides support for the liquid storage bottle, and the stabilizing component restrains the liquid storage bottle, thereby improving the stability of the liquid storage bottle.

[0019] Optionally, the stabilizing assembly includes a fixing ring, a resistance ring, a hoop and a locking bolt, the fixing ring is connected to the lifting sleeve, the resistance ring is connected to the fixing ring, a plurality of tightening grooves are provided on the resistance ring, the hoop is sleeved on the resistance ring, and the locking bolt is threadedly engaged with the end of the hoop. During installation, one of the connection ports of the liquid inlet container is passed between the fixing ring and the resistance ring.

[0020] By adopting the above technical solution, when stabilizing the liquid storage bottle, the connecting port of the liquid storage bottle is passed through between the fixing ring and the resistance ring, and then the hoop is put on the resistance ring, and the locking bolt is rotated to make the hoop squeeze the resistance ring, and the resistance ring deforms and presses against the connecting port, thereby limiting the degree of freedom of the liquid storage bottle and achieving the effect of stabilizing the liquid storage bottle.

[0021] Optionally, a threaded portion is connected to the needle tube, and a mounting cylinder is threadedly fitted on the needle tube, and the mounting cylinder is installed in the mounting hole.

[0022] By adopting the above technical solution, the distance between the top of the needle tube and the liquid inlet container can be adjusted through the cooperation between the threaded part and the installation cylinder, so that it can adapt to the installation of nuclear magnetic tubes of different lengths and sizes, thereby improving the applicability of the cleaning device.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During cleaning, the solvent is introduced into the liquid inlet tank and the mouth of the NMR tube is sealed with liquid. Then, the vacuum device is started to make the inside of the liquid storage bottle negative pressure. The solvent in the liquid inlet tank moves in the gap between the NMR tube and the needle tube, and is sucked into the liquid storage bottle along with the top of the needle tube, achieving the effect of cleaning the inner wall of the NMR tube. By creating a negative pressure inside the liquid storage bottle, the needle can smoothly absorb the solvent. As the solvent moves, it flushes the inner wall of the NMR tube and finally enters the liquid storage bottle. Compared with the existing technology, the waste liquid solvent is separated into the liquid storage bottle, which reduces the possibility of operators contacting the waste liquid solvent, improves the safety of the NMR tube cleaning device, and avoids the occurrence of waste liquid solvent contaminating the solvent source;

[0025] 2. When stabilizing the liquid storage bottle, pass the connecting port of the liquid storage bottle through between the fixing ring and the resistance ring, then put the hoop on the resistance ring, and turn the locking bolt to make the hoop squeeze the resistance ring, and the resistance ring deforms and presses against the connecting port, thereby limiting the degree of freedom of the liquid storage bottle and achieving the effect of stabilizing the liquid storage bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the nuclear magnetic tube cleaning device in Example 1 of the present application.

[0027] Figure 2 It is a cross-sectional view used to illustrate the structure of the liquid inlet container in Example 1 of the present application.

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0029] Figure 4 yes Figure 1 Enlarged view of point B in the middle.

[0030] Figure 5 This is a structural diagram of the liquid storage bottle and the liquid inlet container in Example 2 of the present application.

[0031] Figure 6 It is a cross-sectional view used to illustrate the liquid inlet container structure in Example 2 of the present application.

[0032] Figure 7 yes Figure 6 Enlarged view of point C in the middle.

[0033] Explanation of the accompanying symbols: 01, nuclear magnetic tube; 1, liquid storage bottle; 2, liquid inlet container; 21, liquid inlet tank; 22, first sealing member; 221, tightening ring; 23, mounting hole; 231, positioning step; 232, leakage gap; 3, needle tube; 31, inclined surface; 32, threaded portion; 33, mounting cylinder; 4, three-way valve; 41, vacuum equipment; 5, support frame; 51, base; 52, main rod; 521, lifting sleeve; 522, tightening bolt; 6, stabilizing assembly; 61, fixing ring; 62, contact ring; 63, ferrule; 64, locking bolt; 7, separating funnel; 8, second sealing member. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0035] Example 1 of the present application discloses a nuclear magnetic tube cleaning device. Figure 1 and Figure 2 The nuclear magnetic tube cleaning device includes a liquid storage bottle 1, a liquid inlet container 2, a needle tube 3, a three-way valve 4, and an air extraction device 41. The liquid storage bottle 1 is a spherical glass bottle with at least two integrally formed connection ports. This embodiment uses three as an example. A blocking piston is installed on one connection port. The three-way valve 4 is installed on another connection port. The air extraction device 41 is arranged on one side of the liquid storage bottle 1, and the air extraction end of the air extraction device 41 is connected to one end of the three-way valve 4.

[0036] Reference Figure 2 and Figure 3 The liquid inlet container 2 is a rubber stopper and is mounted on the remaining connection port. A liquid inlet groove 21 is formed at the top of the liquid inlet container 2. Several needle tubes 3 are inserted through the liquid inlet container 2. The diameter of the needle tubes 3 is smaller than the inner diameter of the NMR tube 01. The top of the needle tubes 3 is provided with an inclined surface 31. The inclined surface 31 is used to ensure a gap between the top of the needle tubes 3 and the NMR tube 01. The liquid storage bottle 1 is connected to the outside through the needle tubes 3.

[0037] Reference Figure 1 A support frame 5 is provided on one side of the liquid storage bottle 1. The support frame 5 includes a base 51 and a main rod 52. The main rod 52 is a rectangular rod and is vertically fixed to the base 51. Two lifting sleeves 521 are sleeved on the main rod 52. The lifting sleeves 521 are threaded with tightening bolts 522, which press against the side wall of the main rod 52.

[0038] Reference Figure 1 and Figure 4The lower lifting sleeve 521 is provided with a stabilizing assembly 6, which includes a fixing ring 61, a contact ring 62, a hoop 63, and a locking bolt 64. The fixing ring 61 is fixedly connected to the lower lifting sleeve 521, and the contact ring 62 is fixedly connected to the fixing ring 61. The contact ring 62 is provided with a plurality of tightening grooves, and the surface of the contact ring 62 is provided with a limiting ring groove. Both ends of the hoop 63 are fixedly connected to a locking plate, and the hoop 63 is mounted on the limiting ring groove. The locking bolt 64 passes through the two locking plates and is threadedly engaged with one of the locking plates.

[0039] When stabilizing the liquid storage bottle 1, pass the connecting port through the fixing ring 61 and the resistance ring 62, then put the hoop 63 into the limiting ring groove, and finally rotate the locking bolt 64 to make the hoop 63 press the resistance ring 62, so that the resistance ring 62 deforms and presses against the connecting port, thereby limiting the freedom of the liquid storage bottle 1 and realizing the installation of the liquid storage bottle 1.

[0040] Reference Figure 1 In order to facilitate automatic cleaning of the nuclear magnetic tube 01 , a separating funnel 7 is installed on the upper lifting sleeve 521 , and the infusion end of the separating funnel 7 is located in the liquid inlet tank 21 .

[0041] The implementation principle of a nuclear magnetic tube cleaning device in Example 1 of the present application is as follows: before cleaning, the connecting port is passed through the fixing ring 61 and the resistance ring 62, and the locking bolt 64 is rotated to make the resistance ring 62 press against the connecting port to stabilize the liquid storage bottle 1; during cleaning, the solvent is transported into the liquid inlet tank 21 through the separatory funnel 7 to immerse the nozzle of the nuclear magnetic tube 01; the exhaust device 41 is started to form a negative pressure inside the liquid storage bottle 1, and the solvent moves into the inside of the nuclear magnetic tube 01 under the influence of the pressure; during the movement, the solvent flushes the inner wall of the nuclear magnetic tube 01 to clean the nuclear magnetic tube 01; finally, the waste liquid solvent is discharged from the end of the needle tube 3 into the liquid storage bottle 1, thereby achieving the effect of cleaning the nuclear magnetic tube 01.

[0042] By creating a negative pressure inside the liquid storage bottle 1, the needle can smoothly absorb the solvent. When the solvent moves, it flushes the inner wall of the nuclear magnetic tube 01 and finally enters the liquid storage bottle 1. Compared with the existing technology, the waste liquid solvent is separated into the liquid storage bottle 1, which reduces the possibility of operators contacting the waste liquid solvent, improves the safety of the nuclear magnetic tube 01 cleaning device, and avoids the occurrence of waste liquid solvent contaminating the solvent source.

[0043] Example 2: The difference between this example and Example 1 is that the structure of the liquid inlet container 2 is different.

[0044] Reference Figure 5 、 Figure 6 and Figure 7The liquid inlet container 2 has a glass cover and is integrally formed with a connecting post. The diameter of the connecting post is smaller than the inner diameter of the connecting port. A first sealing member 22 is provided on the connecting post. The first sealing member 22 is a rubber tube with a plurality of abutting rings 221 integrally formed on its surface. The first sealing member 22 is sleeved onto the connecting post, and the abutting rings 221 abut against the inner wall of the connecting port. The first sealing member 22 and the abutting rings 221 cooperate to fill the gap between the connecting post and the inner wall of the connecting port, thereby sealing the liquid inlet container 2.

[0045] Reference Figure 7 The liquid inlet groove 21 is provided at the top of the liquid inlet container 2. A plurality of mounting holes 23 are formed on the bottom wall of the liquid inlet groove 21. Positioning steps 231 are provided in the mounting holes 23. The positioning steps 231 are surrounded by a plurality of liquid leakage notches 232, which are connected to the mounting holes 23. The positioning steps 231 are used to restrict the NMR tube 01.

[0046] Reference Figure 7 The needle tube 3 is inserted into the mounting hole 23. A threaded portion 32 is integrally formed on the needle tube 3. A mounting sleeve 33 is threadedly engaged with the threaded portion 32. The mounting sleeve 33 is embedded in the mounting hole 23. A second sealing member 8 is provided in the mounting hole 23. The second sealing member 8 is a sealing ring and is disposed between the mounting sleeve 33 and the mounting hole 23. The cooperation between the mounting sleeve 33 and the needle tube 3 is used to adjust the distance between the top end of the needle tube 3 and the liquid inlet container 2.

[0047] A first seal 22 is provided to bridge the gap between the liquid inlet container 2 and the connection port, while a second seal 8 is provided to seal the gap between the needle tube 3 and the liquid inlet container 2. The mounting cylinder 33 cooperates with the needle tube 3, allowing the needle tube 3 to accommodate a variety of NMR tubes 01 of varying lengths. Finally, a positioning step 231 defines the opening of the NMR tube 01, ensuring more stable installation. During cleaning, the solvent in the liquid inlet tank 21 enters the interior of the NMR tube 01 through the leakage notch 232.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A nuclear magnetic tube cleaning device, characterized in that: The invention comprises a liquid storage bottle (1), a liquid inlet container (2) for temporarily storing a solvent, a needle tube (3), a three-way valve (4) and an air extraction device (41). The liquid storage bottle (1) is provided with at least two connecting ports, the liquid inlet container (2) is installed on one of the connecting ports, a liquid inlet groove (21) is provided at the top of the liquid inlet container (2), a plurality of needle tubes (3) are passed through the liquid inlet container (2), the diameter of the needle tube (3) is smaller than the inner diameter of the nuclear magnetic tube (01), the liquid storage bottle (1) is connected to the outside through the needle tube (3), the three-way valve (4) is installed on one of the connecting ports, the air extraction device (41) is provided on one side of the liquid storage bottle (1), and the air extraction end of the air extraction device (41) is connected to the three-way valve (4). During cleaning, the solvent enters the liquid inlet groove (21), the nuclear magnetic tube (01) is sleeved on the needle tube (3), and the solvent liquid seals the tube mouth of the nuclear magnetic tube (01).

2. The nuclear magnetic tube cleaning device according to claim 1, characterized in that: The liquid inlet container (2) is a rubber stopper.

3. The nuclear magnetic tube cleaning device according to claim 1, characterized in that: The liquid inlet container (2) is a glass cover, and a first sealing member (22) for sealing the solvent is provided between the liquid inlet container (2) and the connecting port. A plurality of mounting holes (23) are provided on the bottom wall of the liquid inlet tank (21), and the needle tube (3) is inserted into the mounting hole (23). A second sealing member (8) for preventing solvent leakage is provided between the needle tube (3) and the mounting hole (23). A positioning step (231) is provided on the mounting hole (23), and a plurality of liquid leakage notches (232) are provided at positions corresponding to the mounting holes (23) on the bottom wall of the liquid inlet tank (21), and the liquid leakage notches (232) are connected to the mounting hole (23). During installation, the nozzle of the nuclear magnetic tube (01) is inserted into the positioning step (231).

4. The nuclear magnetic tube cleaning device according to claim 3, characterized in that: The first sealing member (22) is a rubber tube, and a plurality of tightening rings (221) are integrally formed on the surface of the first sealing member (22). A connecting column is connected to the liquid inlet container (2). When the liquid inlet container (2) is installed, the first sealing member (22) is sleeved on the connecting column, and the tightening rings (221) press against the inner wall of the connecting port.

5. The nuclear magnetic tube cleaning device according to claim 1, characterized in that: The top end of the needle tube (3) is provided with an inclined surface (31).

6. The nuclear magnetic tube cleaning device according to claim 1, characterized in that: A support frame (5) is provided on one side of the liquid storage bottle (1), and the support frame (5) includes a base (51) and a main rod (52). The main rod (52) is vertically connected to the base (51), and two lifting sleeves (521) are provided on the main rod (52). One side of the lower lifting sleeve (521) is threadedly engaged with a tightening bolt (522), and the tightening bolt (522) presses against the side wall of the main rod (52). A stabilizing component (6) for stabilizing the liquid storage bottle (1) is provided on the lower lifting sleeve (521), and a separating funnel (7) is installed on the upper lifting sleeve (521). The liquid outlet end of the separating funnel (7) faces the liquid inlet tank (21), and the separating funnel (7) is used to store solvent.

7. The nuclear magnetic tube cleaning device according to claim 6, characterized in that: The stabilizing assembly (6) includes a fixing ring (61), a resistance ring (62), a hoop (63) and a locking bolt (64); the fixing ring (61) is connected to the lifting sleeve (521); the resistance ring (62) is connected to the fixing ring (61); a plurality of tightening grooves are provided on the resistance ring (62); the hoop (63) is sleeved on the resistance ring (62); the locking bolt (64) is threadedly engaged with the end of the hoop (63); when installed, one of the connection ports of the liquid inlet container (2) is passed through between the fixing ring (61) and the resistance ring (62).

8. The nuclear magnetic tube cleaning device according to claim 3, characterized in that: The needle tube (3) is connected to a threaded portion (32), and the needle tube (3) is threadedly matched with a mounting cylinder (33), and the mounting cylinder (33) is mounted in the mounting hole (23).

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