Ultra-dry solvent preparation device
By using a magnetic stirrer and peristaltic pump in a sealed environment, an ultra-dry solvent preparation device has solved the problems of high risk of sodium dehydration and molecular sieve dust pollution, achieving efficient and safe ultra-dry solvent preparation.
Patent Information
- Application Number
- CN202423096746.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing technologies for preparing ultra-dry solvents involve high risks when using metallic sodium for dehydration, and dust entering the solvent during molecular sieve dehydration is cumbersome to handle, leading to excessive moisture content.
The process employs sealable raw material bottles and finished product collection bottles, combined with magnetic stirrers, peristaltic pumps, and filters. Molecular sieves are used for drying, and automated control equipment is used to agitate and filter the solvent, ensuring a sealed drying environment.
It improves the drying rate and drying effect, avoids dust pollution and moisture introduction, and achieves efficient preparation of ultra-dry solvent.
Smart Images
Figure CN223654439U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to solvent drying technical field, concretely relates to a kind of super dry solvent preparation device. BACKGROUND
[0002] Organic chemistry experiment cannot be separated from solvent, solvent is not only used as reaction medium, is often used in the purification and post-processing of product.In organic synthesis, according to the characteristics and requirements of reaction, appropriate size solvent is selected, so that the reaction can be carried out smoothly and meet the principle of economy.Some organic reactions such as Grignard reaction, the requirement of solvent is higher, even if the existence of trace moisture, also can bring certain influence to reaction rate, yield and purity.
[0003] At present, for the super dry (anhydrous) solvent needed in laboratory, the common preparation method is to use drying agent and distillation.Na metal is generally used for water removal in distillation, and the use of Na metal is relatively dangerous, so the requirements for operating personnel and equipment are relatively high.Using 3A molecular sieve to dry solvent is more convenient and fast, but the molecular sieve itself is not wear-resistant, and the dust falling off from the surface of the molecular sieve during dehydration process will enter the solvent, so distillation or filtration is necessary to remove, and the treatment process is also relatively complicated and easy to absorb water during the process, causing the moisture of treated solvent to exceed the standard. SUMMARY
[0004] The embodiment of the utility model provides a kind of super dry solvent preparation device, can provide a kind of simple and easy to operate super dry solvent preparation device.
[0005] The embodiment of the utility model provides a kind of super dry solvent preparation device, including raw material bottle that can be sealed, magnetic stirrer and sealable finished product collection bottle, the raw material bottle is used to hold solvent and molecular sieve, the magnetic stirrer includes magnetic stirring platform and rotor, the raw material bottle is set on the magnetic stirring platform, the rotor is set in the raw material bottle, the raw material bottle and the finished product collection bottle are connected by first pipeline, first conveying pump and filter are provided on the first pipeline.
[0006] The embodiment of the utility model has the beneficial effects that, in the embodiment of the utility model, the solvent is dried by the molecular sieve, and the solvent is stirred by the magnetic stirring platform, so as to speed up the drying rate and enhance the drying effect, the dust falling off from the molecular sieve mixed in the solvent is removed by the filter, and is pumped into the finished product collection bottle by the first conveying pump, the whole operation process is carried out in sealed environment, can avoid introducing moisture, and improve the drying effect.
[0007] In an embodiment, the raw material bottle is provided with a screen, the molecular sieve is arranged above the screen, and the rotor is arranged below the screen.
[0008] The embodiment of the utility model has the advantages that in the embodiment of the utility model, the molecular sieve is arranged above the screen mesh, so that the molecular sieve is located at the middle part of the solvent on both sides of the screen mesh, the distance between the molecular sieve and the upper and lower solvents is relatively shortest, and the dehydration efficiency is improved.
[0009] In an embodiment, the raw material bottle and the finished product collecting bottle are connected by a second pipeline to balance the pressure in the raw material bottle and the finished product collecting bottle.
[0010] The embodiment of the utility model has the advantages that in the embodiment of the utility model, the pressure in the raw material bottle and the finished product collecting bottle is the same through the second pipeline, so that the solvent flow between the two caused by the pressure difference is avoided, and the drying process is affected.
[0011] In an embodiment, the first pipeline and the second pipeline each comprise two sections of pipelines connected by a connector, and the connector is provided with electromagnetic valves at both ends.
[0012] The embodiment of the utility model has the advantages that in the embodiment of the utility model, the first pipeline and the second pipeline are arranged as two sections of pipelines connected by a connector, and the electromagnetic valves are arranged at both ends of the connector, so that when the solvent in the raw material bottle is dried to reach the target moisture value, the electromagnetic valves at both ends of the connector are closed, and the connector is disconnected, so that the sealing state of both sides is maintained, and the moisture is avoided.
[0013] In an embodiment, the raw material bottle is connected with a moisture tester through a third pipeline, and the third pipeline is provided with a second conveying pump.
[0014] The embodiment of the utility model has the advantages that in the embodiment of the utility model, the moisture content in the solvent in the raw material bottle can be monitored through the moisture tester, so that whether the target moisture value is reached is judged. The second conveying pump is used for conveying the solvent sample to the moisture tester.
[0015] In an embodiment, the first conveying pump and the second conveying pump are peristaltic pumps.
[0016] The embodiment of the utility model has the advantages that in the embodiment of the utility model, the peristaltic pump does not directly contact the material, can avoid contaminating the solvent, and can rotate in both directions, so that the return of the residual solvent in the pipeline is facilitated.
[0017] In an embodiment, the first pipeline, the second pipeline and the third pipeline are each provided with a filter head at one end connected with the raw material bottle.
[0018] The embodiment of the present application has the beneficial effect that, in the embodiment of the present application, the filter head is arranged to avoid large molecular sieve debris from being sucked into the pipeline.
[0019] In an embodiment, a liquid level monitor is arranged in the raw material bottle.
[0020] The embodiment of the present application has the beneficial effect that, in the embodiment of the present application, the liquid level monitor is arranged to determine the liquid level in the raw material bottle and avoid the second delivery pump from idling.
[0021] In an embodiment, a control device is further included, which is in communication connection with the magnetic stirrer, the moisture tester, the first delivery pump, the second delivery pump, the liquid level monitor and the electromagnetic valve.
[0022] The embodiment of the present application has the beneficial effect that, in the embodiment of the present application, the control device is arranged to realize automatic and intelligent operation of the entire ultra-dry solvent preparation device, thereby saving manpower. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0024] Figure 1 is a structural schematic view of the ultra-dry solvent preparation device provided by the embodiment of the present application.
[0025] BRIEF DESCRIPTION OF DRAWINGS: Raw material bottle-10; screen-11; magnetic stirrer-20; magnetic stirring table-21; rotor-22; finished product collection bottle-30; first pipeline-40; first delivery pump-50; filter-60; second pipeline-70; connector-80; electromagnetic valve-90; third pipeline-100; second delivery pump-110; moisture tester-120. DETAILED DESCRIPTION
[0026] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor under the premise that the embodiments of the present application are within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are used only to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower of the device in the actual use or working state, and specifically refer to the direction of the drawing in the drawing; and "inner" and "outer" refer to the contour of the device.
[0027] Please refer to Figure 1 The present application provides a kind of super dry solvent preparation device, including sealable raw material bottle 10, magnetic stirrer 20 and sealable finished product collection bottle 30, moisture tester 120 and control equipment.Raw material bottle 10 and finished product collection bottle 30 can be glass bottle body, top is made of polypropylene cover, cover is connected with glass bottle body by thread, and sealed by perfluoroether sealing ring.Finished product collection bottle 30 is provided with liquid outlet.
[0028] Raw material bottle 10 is used to contain solvent and molecular sieve.Stainless steel screen 11 is arranged in raw material bottle 10 by clamping, and molecular sieve is arranged above screen 11 to support and limit molecular sieve.
[0029] Magnetic stirrer 20 includes magnetic stirring table 21 and rotor 22, raw material bottle 10 is arranged on magnetic stirring table 21, and rotor 22 is placed below screen 11 in raw material bottle 10 to stir solvent in raw material bottle 10.
[0030] Raw material bottle 10 and finished product collection bottle 30 are connected by first pipeline 40, first pipeline 40 is installed with first delivery pump 50 and filter 60 to deliver super dry solvent into finished product collection bottle 30.First delivery pump 50 is peristaltic pump.Raw material bottle 10 and finished product collection bottle 30 are connected by second pipeline 70 to balance the pressure in raw material bottle 10 and finished product collection bottle 30.Both first pipeline 40 and second pipeline 70 are two sections of pipeline connected by connector 80, both ends of connector 80 are provided with electromagnetic valve 90, so that finished product collection bottle 30 can be taken out alone, and the devices on both sides are kept sealed.The end of first pipeline 40, second pipeline 70 and third pipeline 100 connected with raw material bottle 10 is provided with filter head, so as to prevent dust generated by molecular sieve from entering the pipeline.
[0031] The raw material bottle 10 is connected with the water content tester 120 through the third pipeline 100, and the second conveying pump 110 is arranged on the third pipeline 100. The second conveying pump 110 is a peristaltic pump. The water content tester 120 can adopt a coulomb micro water content tester, and the bottom liquid does not need to be frequently replaced, so that the automatic detection can be facilitated.
[0032] The first pipeline 40, the second pipeline 70 and the third pipeline 100 can be made of PFA (polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer) material.
[0033] The liquid level monitor is arranged in the raw material bottle 10. The control device is in communication connection with the magnetic stirrer 20, the water content tester 120, the first conveying pump 50, the second conveying pump 110, the liquid level monitor and the electromagnetic valve 90. The control device can be a control instrument, and includes an operation panel. The reaction parameters can be set through the operation panel.
[0034] In use, the raw material bottle 10 is opened, the solvent and the molecular sieve are added into the raw material bottle 10, then the target water content required, such as 30ppm, is set on the control device, the start button is clicked, and the whole device will automatically run. The magnetic stirrer 20 of the raw material bottle 10 will start to stir, after the set dehydration time is reached, the water content tester 120 will automatically take a sample for detection, if the set target water content is not reached, the drying will continue, the water content tester 120 will take a sample at the set interval time, and the sample is periodically taken until the water content reaches the set target water content, at this time, the first conveying pump 50 and the filter 60 will automatically run, the solvent is transferred from the raw material bottle 10 to the finished product collecting bottle 30, and when the liquid level monitor detects that the liquid level in the raw material bottle 10 is lower than the lower limit, the device will automatically stop running.
[0035] The above embodiment of the utility model is introduced in detail, the principle and implementation mode of the utility model are described by applying specific examples in the paper, and the above embodiment is only used for helping understanding the method and core idea of the utility model; meanwhile, for the person skilled in the art, according to the idea of the utility model, the specific implementation mode and application range will have changes, and the above is described, and the content of the specification should not be understood as the limitation of the utility model.
Claims
1. An apparatus for preparing an ultra-dry solvent, characterized in that, The device includes a sealable raw material bottle (10), a magnetic stirrer (20), and a sealable finished product collection bottle (30). The raw material bottle (10) is used to contain solvent and molecular sieve. The magnetic stirrer (20) includes a magnetic stirring table (21) and a rotor (22). The raw material bottle (10) is disposed on the magnetic stirring table (21), and the rotor (22) is disposed inside the raw material bottle (10). The raw material bottle (10) and the finished product collection bottle (30) are connected by a first pipe (40). A first delivery pump (50) and a filter (60) are disposed on the first pipe (40).
2. The ultra-dry solvent preparation apparatus according to claim 1, characterized in that, The raw material bottle (10) is provided with a screen (11), the molecular sieve is located above the screen (11), and the rotor (22) is located below the screen (11).
3. The ultra-dry solvent preparation apparatus according to claim 1, characterized in that, The raw material bottle (10) and the finished product collection bottle (30) are connected by a second pipe (70) to balance the pressure inside the raw material bottle (10) and the finished product collection bottle (30).
4. The ultra-dry solvent preparation apparatus according to claim 3, characterized in that, Both the first pipe (40) and the second pipe (70) include two pipe sections connected by a connector (80), and both ends of the connector (80) are provided with solenoid valves (90).
5. The ultra-dry solvent preparation apparatus according to claim 4, characterized in that, The raw material bottle (10) is connected to the moisture analyzer (120) via a third pipe (100), and a second delivery pump (110) is installed on the third pipe (100).
6. The ultra-dry solvent preparation apparatus according to claim 5, characterized in that, Both the first delivery pump (50) and the second delivery pump (110) are peristaltic pumps.
7. The ultra-dry solvent preparation apparatus according to claim 5, characterized in that, A filter head is provided at the end of the first pipe (40), the second pipe (70) and the third pipe (100) that are connected to the raw material bottle (10).
8. The ultra-dry solvent preparation apparatus according to claim 5, characterized in that, A liquid level monitor is installed inside the raw material bottle (10).
9. The ultra-dry solvent preparation apparatus according to claim 8, characterized in that, It also includes a control device, which is communicatively connected to the magnetic stirrer (20), the moisture analyzer (120), the first delivery pump (50), the second delivery pump (110), the liquid level monitor, and the solenoid valve (90).