CN210845327U - Rotary evaporator capable of accurately and quantitatively concentrating multiple samples at one time - Google Patents
Rotary evaporator capable of accurately and quantitatively concentrating multiple samples at one time Download PDFInfo
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- CN210845327U CN210845327U CN201921495842.3U CN201921495842U CN210845327U CN 210845327 U CN210845327 U CN 210845327U CN 201921495842 U CN201921495842 U CN 201921495842U CN 210845327 U CN210845327 U CN 210845327U
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- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 27
- 238000005485 electric heating Methods 0.000 claims description 23
- 239000000523 sample Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000002474 experimental method Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 description 14
- 230000008020 evaporation Effects 0.000 description 13
- 210000005239 tubule Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 238000005259 measurement Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
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- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 239000010409 thin film Substances 0.000 description 1
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Abstract
The utility model relates to a chemical experiment equipment technical field especially, relates to a rotary evaporator, concretely relates to rotary evaporator that can once accurate ration concentrate a plurality of samples. This application can once accurate quantitative concentration multiple sample's rotary evaporator, change a retort of former rotary evaporator into the retort group of two at least retorts, change raw water (oil) bath into the electrical heating area, each retort in the retort group is in series and rotatory along same axis in proper order, and the rotation axis is certain degree between 2 ~ 44 with the angle of declination of horizontal plane, and the support is supported to the bracket of setting down between the retort. The liquid outlet is formed at the lowest liquid level of the working position of the distillation flask and connected with the scale metering thin tube, the scale metering thin tube is respectively provided with a valve at the upper part and the lower part, the rotation is stopped immediately when the amount of the concentrated liquid reaches the designed accurate amount, the two valves are matched for opening and closing, and the accurate quantitative discharge of the concentrated liquid in each distillation flask can be realized on the premise that the distillation flask is not required to be disassembled and the negative pressure in the system is not greatly influenced.
Description
Technical Field
The utility model relates to a chemical experiment equipment technical field especially, relates to a rotary evaporator, concretely relates to rotary evaporator that can once accurate ration concentrate a plurality of samples.
Background
The rotary evaporator is extraction experimental equipment for carrying out reduced pressure distillation concentration on materials, is widely applied to experiments of scale concentration, drying, extraction recovery and the like of samples, and is particularly used for quickly distilling a large amount of solvents. The existing rotary evaporator is generally composed of components such as a vacuumizing device, a heating device, a condensing device, a rotating device and the like, the principle of the rotary evaporator is mainly that the flask is controlled by electronic equipment, the flask is rotated at a constant speed under the most suitable rotating speed to enable a solvent to form a thin film, the evaporation area is increased, the evaporation flask is in a negative pressure state through a vacuum pump, the evaporation flask is placed in a water bath pot or an oil bath pot for constant temperature heating while rotating, the heating temperature can be close to the boiling point of the solvent, the solution in the flask is heated and diffused under the negative pressure to be evaporated, and the rapid evaporation of the solvent is realized.
The existing rotary evaporator can only distill one sample at a time in the using process, and the working efficiency is low. The existing parallel evaporator can evaporate and concentrate a plurality of samples once, but the evaporation and the concentration are completed by oscillating a plurality of test tube-shaped evaporation tubes which are vertically and parallelly placed under negative pressure, and the working efficiency is not high because the evaporation area of each sample is far smaller than that of a rotary evaporator. In addition, on the premise of not generating great influence on the negative pressure in the system, the distillation is stopped when the amount of the concentrated solution in the distillation flask or the evaporation tube is large in the distillation process, so that the set accurate amount of the concentrated solution cannot be accurately determined and controlled.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can once the rotary evaporator of a plurality of samples of accurate ration concentration, solved a rotary evaporator once can only distill the low efficiency problem of a sample, still solved the problem of the accurate quantitative control of concentrate under the prerequisite that does not produce great influence to negative pressure in the system.
In order to achieve the above object, the utility model provides a can once accurate quantitative concentration rotary evaporator of a plurality of samples, include: the rotary motor is fixed on the bracket;
the rotary motor drives the distillation flask group to rotate through the transmission body (the rotary evaporator of the utility model is also provided with a control panel for controlling the rotating speed and the heating temperature of the rotary motor, which is not shown in the figure), one end of the transmission body is fixed with the detachable distillation flask group, and the other end is fixed with the detachable condenser;
the bottom of the condenser is connected with a collecting bottle;
the distillation flask group comprises at least 2 distillation flasks;
preferably, the distillation bottle group comprises 2-6 distillation bottles;
each distillation bottle of the distillation bottle group is sequentially connected in series and rotates along the same axis;
the rotation axis and the horizontal plane form a declination included angle, and the declination included angle is a certain degree between 2 and 44;
preferably, the declination included angle is a certain degree between 5 and 40;
preferably, the declination included angle is a certain degree between 10 and 35;
the first distillation bottle, the second distillation bottle and the like are sequentially arranged in the distillation bottle group from near to far according to the distance between the distillation bottle group and the transmission body, the distillation bottle farthest from the transmission body is provided with 2 bottle openings which are respectively a first bottle opening and a third bottle opening, and the rest are provided with 3 bottle openings which are respectively a first bottle opening, a second bottle opening and a third bottle opening;
the first bottle mouth of each distillation bottle in the distillation bottle group is closest to the transmission body, the second bottle mouth is farthest, the center connecting line of the second bottle mouth of each distillation bottle and the first bottle mouth of each distillation bottle is coincident with the rotation axis, the third bottle mouth of each distillation bottle is arranged at the lowest liquid level of the bottom side wall of the working position of each distillation bottle, the distillation bottle is mainly used for discharging concentrated liquid and can also be used for feeding, and the third bottle mouth of each distillation bottle is connected with a concentrated liquid quantifying assembly, so that the accurate quantitative control of the concentrated liquid is realized;
the first bottle mouth of the first distillation bottle is hermetically connected with the transmission body, and the second bottle mouth of the first distillation bottle is hermetically connected with the ground first bottle neck where the first bottle mouth of the second distillation bottle is located and fastened by a clamp;
the second distillation bottle is provided with 3 bottle openings which are respectively a first bottle opening of the second distillation bottle, a second bottle opening of the second distillation bottle and a third bottle opening of the second distillation bottle, the first bottle opening of the second distillation bottle and the second bottle opening of the first distillation bottle are in grinding sealing connection and are fastened by a clamp, and the second bottle opening of the second distillation bottle and the first bottle neck grinding opening where the first bottle opening of the third distillation bottle is located are in sealing connection and are fastened by a clamp;
the first bottleneck of the distillation flask farthest from the transmission body is hermetically connected with the second bottleneck ground of the next distillation flask and is fastened by a clamp;
the positions of the first bottle openings of the distilled bottles from the second distilled bottle to the distilled bottle farthest from the transmission body in the distilled bottle group are from the first bottle opening of the first distilled bottle to a certain position between the transmission body and the condenser interface;
preferably, from the second distillation bottle to the distillation bottle farthest from the transmission body, the position of the first bottle opening of the second distillation bottle is the interface between the transmission body and the condenser;
a bracket is arranged below each distillation bottle for supporting, a first bracket is arranged between the first distillation bottle and the second distillation bottle, and a second bracket is arranged between the second distillation bottle and the third distillation bottle;
preferably, a spherical structure is arranged on the first bottle neck where the first bottle mouth of each distillation bottle is located, and is used for preventing explosion boiling;
the concentrated solution quantifying component is a quantifying pipe with quantifying scale lines, and controls the liquid drainage of the concentrated solution and the system sealing through a second liquid drainage valve arranged at one end of the quantifying pipe, which is far away from a third bottle opening of the distillation bottle;
a first liquid discharge valve is arranged at a third bottleneck of the distillation flask for controlling the discharge of concentrated liquid and sealing the distillation flask;
the first drain valve and the second drain valve can be made of glass or polytetrafluoroethylene;
the concentrated solution quantifying assembly and a third bottle opening of the distillation bottle are of an integrally formed structure or are in grinding closed connection and are fixed by a clamp;
one end of the concentrated solution quantifying assembly, which is far away from the third bottle opening of the distillation bottle, is also provided with a quantifying and increasing container for realizing one-time capacity increasing and liquid discharging of the concentrated solution;
the quantitative compatibilizer comprises a plurality of quantitative compatibilizers with different capacities so as to be selectively replaced according to the capacity requirement of the concentrated solution;
the concentrated solution quantitative component is hermetically connected with the glass grinding opening of the quantitative compatibilizer;
the neck of the quantitative amplification container is provided with an annular flange for containing the solution flowing out of the quantitative tube;
each distillation bottle in the distillation bottle group is heated through a heating component, the heating component is an electric heating belt arranged on the outer wall of the distillation bottle, and preferably, the electric heating belt is wrapped on the outer wall of the distillation bottle;
the outer layer of the electric heating belt is provided with a glass fiber belt, so that the heat insulation and fixation of the electric heating belt are realized;
a temperature controller sensor probe is also arranged between the electric heating belt and the distillation flask.
Can once the rotatory evaporimeter of accurate quantitative concentration a plurality of samples, improve 1 original retort and be the retort group including 2 at least stills, improve the still that has 1 bottleneck originally and be 3 bottlenecks (the still that is farthest from the transmission body is equipped with 2 bottlenecks), every two liang of airtight series connection of mill mouthful in proper order of each retort is fixed with anchor clamps, and it is rotatory along same axis to set up the bracket support under the junction and ensure each retort operating condition, and the minimum liquid level position of each retort operating condition establishes the third bottleneck, the third bottleneck connects with concentrated solution ration subassembly, concentrated solution ration subassembly is provided with quantitative tubule, there is the scale mark on the quantitative tubule, first flowing back valve is established to the one end that quantitative tubule is close to the still, the one end that the still was kept away from to the quantitative tubule is established the second flowing back valve, and rotatory evaporation begins, closes the second flowing back valve (use the second flowing back valve to open when increasing the container as required), The method comprises the steps of opening a first liquid discharge valve to observe slight changes of the amount of concentrated liquid intuitively, slowing down the rotating speed when the concentrated liquid is close to the designed accurate amount, stopping rotating immediately when the concentrated liquid reaches the designed accurate amount, closing the first liquid discharge valve rapidly, opening a second liquid discharge valve (the second liquid discharge valve is closed when a quantitative container is added according to needs, and then the second liquid discharge valve is opened after the quantitative container is taken down), enabling the two valves to be matched to discharge the accurate and quantitative concentrated liquid, being used for measuring indexes such as reaction yield and the like, achieving unification of detection standards, and researching performance indexes of different concentrated liquids with the same yield and performance indexes of concentrated liquids with different concentration degrees of the same sample. And simultaneously, rotatory evaporimeter to electric heating area replaces current water bath pot or oil bath pot as heating element, right the retort heats, the advantage: (1) the steric hindrance is eliminated, the concentrated solution quantitative component and the added distillation flask are convenient to install, (2) the volume of the rotary evaporator is reduced, and the water consumption and the oil consumption for heating in the evaporation process are reduced; (3) because the direct tapping of concentrate can be realized to the retort for whole rotary evaporator need not to use operating system, has reduced the subassembly of whole rotary evaporator, has practiced thrift the cost.
Drawings
Fig. 1 is a schematic structural diagram of a rotary evaporator according to an embodiment of the present invention;
FIG. 2 is a schematic view of another distillation flask connection structure of the rotary evaporator according to the embodiment of the present invention;
FIG. 3 is another schematic structural diagram of a rotary evaporator according to an embodiment of the present invention and another schematic structural diagram of a distillation flask;
FIG. 4 is a schematic view of a third distillation flask of a rotary evaporator according to an embodiment of the present invention;
labeled as: 1-support, 2-rotating motor, 3-transmission body, 4-distillation bottle group (comprising 41, 42 and 43), 5-condenser, 6-collection bottle, 7-concentrated solution quantitative component (comprising 71, 72, 73 and 74), 8-clamp, 9-quantitative container, 10-electric heating band, 11-glass fiber band, 12-temperature sensor, 13-bracket (comprising 131 and 132) and 14-annular connecting disc;
41-a first distillation flask, 42-a second distillation flask, 43-a third distillation flask, 71-quantitative scale marks, 72-a quantitative pipe, 73-a first liquid discharge valve, 74-a second liquid discharge valve, 131-a first bracket, 132-a second bracket;
411-the first mouth of the first retort, 412-the second mouth of the first retort, 413-the third mouth of the first retort, 421-the first mouth of the second retort, 422-the second mouth of the second retort, 423-the third mouth of the second retort, 431-the first mouth of the third retort, 433-the third mouth of the third retort;
411 ' -the first neck of the first retort, 421 ' -the first neck of the second retort, 431 ' -the first neck of the third retort.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The rotary evaporator of the utility model is modified on the basis of RE-3000A type rotary evaporator produced by Shanghai Yangrong biochemical instrument factory.
Example 1
Referring to fig. 1, the rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to the present embodiment includes: support 1, be fixed with rotating electrical machines 2 on the support 1 (the utility model discloses rotatory evaporimeter still can be equipped with control rotating electrical machines parameter rotational speed and heating temperature's control panel, not shown in the figure) and control rotation speed, heating temperature's control assembly etc.. The rotating motor 2 drives the distillation flask group 4 to rotate through a transmission body 3, one end of the transmission body 3 is fixedly provided with the detachable distillation flask group 4, the other end of the transmission body is fixedly provided with a detachable condenser 5, the bottom of the condenser is connected with a collection bottle 6 for collecting fractions, and the top of the condenser 5 is connected with a vacuum pump (not shown in the figure);
the retort group 4 comprises 3 retorts: the first distillation flask 41, the second distillation flask 42 and the third distillation flask 43 are respectively used for containing the solution 1 to be concentrated, the solution 2 to be concentrated and the solution 3 to be concentrated, and 3 solutions to be concentrated can be from the same sample or different samples. The first distillation bottle 41, the second distillation bottle 42 and the third distillation bottle 43 are sequentially fixed in series, a bracket 13 is arranged between the distillation bottles, a first bracket 131 is arranged between the first distillation bottle 41 and the second distillation bottle 42, a second bracket 132 is arranged between the second distillation bottle 42 and the third distillation bottle 43, the bracket 13 is used for supporting the distillation bottle group 4, the first distillation bottle 41, the second distillation bottle 42 and the third distillation bottle 43 are ensured to rotate along the same axis, a declination included angle is formed between the rotation axis and the horizontal plane, and the declination included angle is a certain degree between 2 and 44, such as 15 degrees.
The first distillation bottle 41 is provided with 3 bottle openings, namely a first bottle opening 411 of the first distillation bottle, a second bottle opening 412 of the first distillation bottle and a third bottle opening 413 of the first distillation bottle, the first bottle opening 411 of the first distillation bottle is hermetically connected with the transmission body (the connection is the prior art), the second bottle opening 412 of the first distillation bottle is hermetically connected with the ground opening of the second distillation bottle 42 and is fastened by a clamp 8, and the third bottle opening 413 of the first distillation bottle is connected with the concentrated liquid quantifying component 7;
the second distillation bottle is provided with 3 bottle openings which are respectively a first bottle opening 421 of the second distillation bottle, a second bottle opening 422 of the second distillation bottle and a third bottle opening 423 of the second distillation bottle, the first bottle opening 421 'of the second distillation bottle is in grinding and sealing connection with the second bottle opening 412 of the first distillation bottle and is fastened by a clamp 8, the second bottle opening 422 of the second distillation bottle is in grinding and sealing connection with the first bottle opening 431' of the third distillation bottle and is fastened by the clamp 8, and the third bottle opening 423 of the second distillation bottle is connected with the concentrated solution quantifying component 7;
the third distillation bottle is provided with 2 bottle openings, namely a first bottle opening 431 of the third distillation bottle and a third bottle opening 433 of the third distillation bottle, a first bottle opening 431' where the first bottle opening 431 of the third distillation bottle is located is in grinding and sealing connection with a second bottle opening 422 of the second distillation bottle and is fastened by a clamp 8, and the third bottle opening 433 of the third distillation bottle is connected with a concentrated solution quantifying component 7.
Rotatory evaporimeter is in work, the first bottleneck 421 'of second retort the length of the first bottleneck 431' of third retort all reaches transmission body 3 with 5 knecks of condenser.
As shown in fig. 2, the first neck 411 ' of the first distillation bottle, the first neck 421 ' of the second distillation bottle and the first neck 431 ' of the third distillation bottle are provided with spherical structures near the respective distillation bottles; the spherical structure not only prevents the explosive boiling of the concentrated solution to be concentrated, but also facilitates the sealing connection and fixation of the ground between the distillation flasks.
The third bottle openings of the first distillation bottle 41, the second distillation bottle 42 and the third distillation bottle 43 are all arranged at the lowest liquid level of the respective working positions and are mainly used for discharging concentrated liquid, and the direction of the third bottle opening can be adjusted for feeding; and the third bottle mouth of the distillation bottle is connected with the concentrated solution quantifying component 7, so that the accurate and quantitative control of the concentrated solution is realized.
The concentrated solution quantifying assembly 7 and the third bottle mouth of each distillation bottle can be of an integrally formed structure or a structure which is hermetically connected through ground glass, and are fixed by a clamp 8, wherein the latter is selected in the embodiment.
The concentrated solution quantitative assembly 7 is a quantitative pipe 72 with quantitative scale marks 71, and controls the liquid discharge of the concentrated solution and the sealing of the distillation system through a second liquid discharge valve 74 arranged at one end of the quantitative pipe 72 far away from the distillation bottle.
And a first drain valve 73 is arranged at the third bottleneck of each distillation flask to control the discharge of the concentrated liquid and seal the distillation flask.
The first drain valve 73 and the second drain valve 74 may be made of glass or teflon.
And a quantitative liquid increasing container 9 is further arranged at the position of the concentrated liquid quantitative component far away from the third bottle opening of the distillation bottle according to the requirement and is used for realizing one-time capacity increasing and liquid discharging of the concentrated liquid.
The quantitative increase container 9 comprises a plurality of containers with different volumes, and the containers are selectively replaced according to the volume requirement of the concentrated solution.
The concentrated solution quantitative component 7 is connected with the quantitative adding container 9 in a sealed way through a glass ground port and is fixed by a clamp 8 (not shown in the figure).
The neck of the quantitative amplification container 9 is provided with an annular flange 14 for containing the solution flowing out from the quantitative tube. Each distillation bottle in the distillation bottle group is heated through a heating component, the heating component is an electric heating belt 10 arranged on the outer wall of the distillation bottle, and preferably, the electric heating belt is wrapped on the outer wall of the distillation bottle.
The outer layer of the electric heating belt is provided with a glass fiber belt 11, so that the electric heating belt is insulated and fixed.
A temperature controller sensor probe 12 is also arranged between the electric heating belt and the distillation flask.
Can once the rotatory evaporimeter of accurate quantitative concentration a plurality of samples, improve 1 original distillation flask into the distillation flask group 4 of 3 distillation flasks, two liang of airtight series connections of grinding in proper order of distillation flask are fixed with anchor clamps 8, and bracket 13 supports is established to the junction, can once the rotatory evaporation 3 treat the concentrate, but the advantage of the once evaporative concentration a plurality of samples of existing parallel evaporimeter has the big high efficiency of rotatory evaporimeter evaporation area again. The original distillation bottle with only one bottle mouth is changed into a distillation bottle with 3 bottle mouths (the third distillation bottle has 2 bottle mouths), each bottle mouth can be used for feeding, the lowest liquid level position of each distillation bottle in the working state is provided with a third bottle mouth, the third bottle mouth of each distillation bottle is provided with a first liquid discharge valve 73 and is connected with a concentrated liquid quantitative component 7, the concentrated liquid quantitative component 7 is provided with a quantitative tubule 72, the quantitative tubule is provided with scale marks 71, and one end of the quantitative tubule, which is far away from the distillation bottle, is provided with a second liquid discharge valve 74. In the rotary evaporator of this embodiment, when the distillation is started, the second drain valve 74 is closed (when the quantitative addition container 9 is used as needed, the second drain valve 74 is opened), the first drain valve 73 is opened so that the distillation flask still maintains the negative pressure state inside the distillation system, the change of the amount of the concentrated solution can be visually observed through the scale on the quantitative tubule 72 during the distillation process, the rotation speed is slowed down when the amount of the concentrated liquid approaches the designed accurate amount, the rotation is stopped immediately when the amount of the concentrated liquid reaches the designed accurate amount, and rapidly closing the first drain valve 73 and opening the second drain valve 74 (when the quantitative increasing container 9 is used according to the requirement, the second drain valve 74 is closed, and after the quantitative increasing container 9 is taken down, the second drain valve is opened), and then a determined amount of concentrated solution is discharged for calculating the yield index and researching the performance difference of the concentrated solution of different samples.
Rotatory evaporimeter to electric heating band replaces current water bath or oil bath as heating element, right the retort heats, the advantage: (1) the steric hindrance is eliminated, and the concentrated solution quantifying component 7, the second distillation flask 42 and the third distillation flask 43 are convenient to mount; (2) the volume of the rotary evaporator is reduced, and the water consumption and the oil consumption for heating in the evaporation process are reduced; (3) because the direct tapping of concentrate can be realized to the retort for rotary evaporator need not to use operating system, has reduced rotary evaporator's subassembly, has practiced thrift the cost.
As shown in the rotary evaporator shown in FIG. 1, the concentrated solution quantitative component in this embodiment is preferably a quantitative tube 72, the outer wall of the quantitative tube is provided with quantitative scale lines 71 for reading the amount of the concentrated solution, and as an alternative structure, the quantitative tube 72 in this embodiment may be a measurable narrow tube whose cavity is a narrow tube type structure, and its measurable capacity is preferably 1-10mL, and its measurement scale can be accurate to 0.01mL, even 0.005 mL.
As an alternative structure, as shown in the rotary evaporator shown in fig. 1, a quantitative increasing container 9 is further provided at a position of the quantitative pipe 72 close to the second drain valve 74, and when the capacity of the quantitative pipe 72 cannot meet the capacity requirement of the concentrated solution, the quantitative increasing container 9 can be additionally provided to increase the quantifiable capacity of the concentrated solution, so as to realize one-time discharging of the concentrated solution with the required capacity, reduce the error of multiple readings required by multiple times of discharging, and contribute to improving the accurate metering of the concentrated solution. The quantitative increase container and the quantitative tube are matched through accurate measurement, and the capacity expansion of the quantitative tube 72 is realized. In this embodiment, the quantitative amplification container 9 includes a plurality of containers with different capacities, so as to be selectively replaced according to the designed capacity of the concentrated solution, for example, the capacity of the quantitative amplification container 9 is designed to be a set of a plurality of containers such as 1mL, 2mL, 3mL, 5mL, 10mL, 20mL, etc., and an appropriate quantitative amplification container 9 is selected according to the required capacity of the concentrated solution to accurately discharge the concentrated solution at one time. The quantitative adding container 9 can be in the shape of an elbow connecting pipe, a flat bottle structure or a sphere which is selected to be suitable according to the distance between the distillation bottle and the operating platform.
In the structure of the rotary evaporator shown in fig. 1, the heating element is used for heating and evaporating the liquid to be concentrated in the distillation flask, in this embodiment, the heating element is an electric heating tape wrapped around the outer wall of the distillation flask, the electric heating tape 10 heats and evaporates the liquid to be concentrated therein through heat conduction of the wall of the distillation flask, and preferably, the electric heating tape is wrapped around the outer wall of the distillation flask in a ring shape, so as to ensure uniform heating. Meanwhile, a glass fiber band 11 is arranged outside the electric heating band and used as a heat insulation material and a fixing layer to realize heat insulation and fixing of the electric heating band, and a temperature controller sensor probe 12 is arranged between the electric heating band 10 and the outer wall of the distillation flask to detect the heating temperature.
As a changeable structure, as shown in fig. 3, the distillation flask group includes 6 distillation flasks, and the distillation flasks contain 1 to 6 liquids to be concentrated respectively, and the 6 liquids to be concentrated may be from the same sample or different samples. The connection mode and the heating mode of the 6 distillation bottles are the same as those of the 3 distillation bottles.
As a structure that can be changed, the number of the retort bottles included in the retort group may be 2, 4, or 5.
As an alternative configuration, each of the flasks of the flask group may have a shape as shown in fig. 3 or a shape as shown in fig. 4. The upper and lower portions of the axis of rotation of the body of the retort bottle shown in fig. 4 are of similar or equivalent mass.
The embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. A rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time is characterized by comprising: the device comprises a support (1), wherein a rotating motor (2) is fixed on the support (1); the rotary motor (2) drives the distillation flask group (4) to rotate through a transmission body (3), one end of the transmission body (3) is fixedly provided with the detachable distillation flask group (4), the other end of the transmission body is fixedly provided with a detachable condenser (5), and the bottom of the condenser (5) is connected with a collection bottle (6);
the distillation flask group (4) comprises at least 2 distillation flasks;
each distillation bottle of the distillation bottle group (4) is sequentially connected in series and rotates along the same axis;
the rotation axis and the horizontal plane form a declination included angle, and the declination included angle is a certain degree between 2 and 44;
a first distillation flask (41), a second distillation flask (42), a third distillation flask (43) and the like are sequentially arranged in the distillation flask group (4) from near to far according to the distance from the transmission body (3), the distillation flask farthest from the transmission body (3) is provided with 2 bottle openings which are respectively the first bottle opening and the third bottle opening of the distillation flask, and the rest distillation flasks are respectively provided with 3 bottle openings which are respectively the first bottle opening, the second bottle opening and the third bottle opening of the distillation flask;
the first bottle mouth of each distillation bottle in the distillation bottle group (4) is closest to the transmission body (3) and the second bottle mouth is farthest, the central connecting line of the second bottle mouth of each distillation bottle and the first bottle mouth is superposed with the rotation axis, and the third bottle mouth of each distillation bottle is formed at the lowest liquid level of the working position of the distillation bottle and is connected with the concentrated solution quantifying component (7);
the first bottle mouth (411) of the first distillation bottle is hermetically connected with the transmission body (3), and the second bottle mouth (412) of the first distillation bottle is hermetically connected with the ground mouth of the first bottle neck (421') of the second distillation bottle and is fastened by a clamp (8);
the second bottle mouth (422) of the second distillation bottle is connected with the ground mouth of the first bottle neck (431') of the third distillation bottle in a sealed mode and is fastened by a clamp (8);
the bottleneck where the first bottleneck of the distillation flask farthest from the transmission body (3) is located and the second bottleneck ground of the next distillation flask are hermetically connected and fastened by a clamp (8);
a bracket (13) is arranged below each distillation flask for supporting;
the position of the first bottle opening of the distilled bottle group (4) from the second distilled bottle to the distilled bottle farthest from the transmission body (3) is a position from the first bottle opening (411) of the first distilled bottle to a position between the interface of the transmission body (3) and the condenser (5);
each distillation flask in the distillation flask group is heated through a heating component, and the heating component is an electric heating belt (10) arranged on the outer wall of each distillation flask.
2. The rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to claim 1, wherein the first neck of each distillation bottle, at which the first mouth is located, is provided with a spherical structure.
3. The rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to claim 1, wherein a glass fiber tape (11) is disposed on an outer layer of the electric heating tape (10) to realize heat insulation and fixation of the electric heating tape (10), and a temperature controller sensor probe (12) is further disposed between the electric heating tape (10) and the distillation flask.
4. The rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to claim 1, wherein the concentrated solution quantitative assembly (7) is a quantitative tube (72) with quantitative scale marks (71), and a second drain valve (74) is arranged at one end of the quantitative tube (72) far away from the distillation flask;
a first drainage valve (73) is arranged at the third bottleneck of each distillation flask;
the first drain valve (73) and the second drain valve (74) are opened and closed in a matching manner to control the discharge of the concentrated liquid and seal the distillation flask.
5. The rotary evaporator capable of concentrating a plurality of samples accurately at a time according to claim 4, wherein the first drain valve (73) and the second drain valve (74) are made of glass or Teflon.
6. The rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to claim 1, wherein the concentrated solution quantitative component (7) and the third bottle opening of the distillation flask are of an integrally formed structure or are in grinding sealing connection and are fixed through a clamp (8).
7. The rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to claim 1, wherein a quantitative adding container (9) is further disposed at the end of the concentrated solution quantitative component (7) far away from the third bottle mouth of the distillation bottle, and is used for realizing one-time capacity-increasing liquid discharging of the concentrated solution.
8. The rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to claim 7, wherein the quantitative adding container (9) comprises a plurality of containers with different volumes, and the containers are selectively replaced according to the volume requirement of the concentrated solution.
9. The rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to claim 7, wherein the concentrated solution quantitative unit (7) is hermetically connected with the glass ground of the quantitative adding container (9) and fixed by a clamp (8).
10. A rotary evaporator capable of accurately and quantitatively concentrating a plurality of samples at a time according to claim 7, wherein the neck of the quantitative amplification container (9) is provided with an annular flange (14).
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| CN201921495842.3U CN210845327U (en) | 2019-09-10 | 2019-09-10 | Rotary evaporator capable of accurately and quantitatively concentrating multiple samples at one time |
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| CN201921495842.3U CN210845327U (en) | 2019-09-10 | 2019-09-10 | Rotary evaporator capable of accurately and quantitatively concentrating multiple samples at one time |
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| CN110404283A (en) * | 2019-09-10 | 2019-11-05 | 北京师范大学 | It is a kind of can an accurate quantitative analysis Rotary Evaporators of multiple samples are concentrated |
| CN110404282A (en) * | 2019-09-10 | 2019-11-05 | 北京师范大学 | It is a kind of can an accurate quantitative analysis recycle the Rotary Evaporators of multiple solvents |
| CN110478928A (en) * | 2019-09-25 | 2019-11-22 | 北京师范大学 | It is a kind of once can accurate quantitative analysis more rotary shaft evaporimeters of multiple samples are concentrated |
| WO2021047537A1 (en) * | 2019-09-10 | 2021-03-18 | 北京师范大学 | Rotary evaporator for accurately and quantitatively recovering multiple solvents or concentrating multiple samples at one time |
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2019
- 2019-09-10 CN CN201921495842.3U patent/CN210845327U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404283A (en) * | 2019-09-10 | 2019-11-05 | 北京师范大学 | It is a kind of can an accurate quantitative analysis Rotary Evaporators of multiple samples are concentrated |
| CN110404282A (en) * | 2019-09-10 | 2019-11-05 | 北京师范大学 | It is a kind of can an accurate quantitative analysis recycle the Rotary Evaporators of multiple solvents |
| WO2021047537A1 (en) * | 2019-09-10 | 2021-03-18 | 北京师范大学 | Rotary evaporator for accurately and quantitatively recovering multiple solvents or concentrating multiple samples at one time |
| CN110404282B (en) * | 2019-09-10 | 2024-03-22 | 北京师范大学 | Rotary evaporator capable of accurately and quantitatively recycling multiple solvents at one time |
| CN110404283B (en) * | 2019-09-10 | 2024-03-22 | 北京师范大学 | Rotary evaporator capable of accurately and quantitatively concentrating multiple samples at one time |
| CN110478928A (en) * | 2019-09-25 | 2019-11-22 | 北京师范大学 | It is a kind of once can accurate quantitative analysis more rotary shaft evaporimeters of multiple samples are concentrated |
| CN110478928B (en) * | 2019-09-25 | 2024-04-16 | 北京师范大学 | Multi-rotation-shaft evaporator capable of accurately and quantitatively concentrating multiple samples at one time |
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