CN110755868B - High-efficient intelligent self-heating rotary evaporator - Google Patents
High-efficient intelligent self-heating rotary evaporator Download PDFInfo
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- CN110755868B CN110755868B CN201911101349.3A CN201911101349A CN110755868B CN 110755868 B CN110755868 B CN 110755868B CN 201911101349 A CN201911101349 A CN 201911101349A CN 110755868 B CN110755868 B CN 110755868B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 42
- 238000004821 distillation Methods 0.000 claims abstract description 128
- 239000012530 fluid Substances 0.000 claims abstract description 88
- 239000007788 liquid Substances 0.000 claims abstract description 67
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims description 56
- 238000007599 discharging Methods 0.000 claims description 25
- 238000005485 electric heating Methods 0.000 claims description 17
- 239000000523 sample Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000011002 quantification Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000003507 refrigerant Substances 0.000 abstract description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 4
- 235000011089 carbon dioxide Nutrition 0.000 abstract description 4
- 239000000498 cooling water Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- -1 polytetrafluoroethylene Polymers 0.000 description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000012459 cleaning agent Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000005486 microgravity Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/08—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vessels; Atomisation on rotating discs
- B01D3/085—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vessels; Atomisation on rotating discs using a rotary evaporator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to the technical field of evaporation equipment, in particular to a rotary evaporator, and particularly relates to a high-efficiency intelligent self-heating rotary evaporator. The high-efficiency intelligent self-heating rotary evaporator is based on the structure of the existing rotary evaporator, adopts a distiller with a jacket type structure capable of coaxially rotating to distill the liquid to be distilled, compresses gaseous substances formed by evaporation by utilizing a vapor compressor, circulates compressed high-temperature fluid into a fluid channel in the distiller, forms a heat exchange surface on the outer wall of a distillation flask, and continuously distills the sample to be distilled by utilizing the obvious temperature difference between the compressed fluid and the sample to be distilled, thereby saving not only a condensation system component of the original rotary evaporator, but also refrigerants such as cooling water, ice cubes, dry ice and the like, greatly saving water resources, saving a water bath (oil) pot, a lifting system and an angle adjusting system component, and reducing energy consumption and use cost.
Description
Technical Field
The invention relates to the technical field of evaporation equipment, in particular to a rotary evaporator, and particularly relates to a high-efficiency intelligent self-heating rotary evaporator.
Background
The rotary evaporator is extraction experimental equipment for carrying out reduced pressure distillation concentration on materials, is widely applied to experiments such as scale concentration, drying, extraction recovery and the like of samples, and is particularly used for rapidly distilling a large amount of solvents. The existing rotary evaporator is generally composed of a vacuumizing device, a heating device, a condensing device, a rotating device and other components. The principle of the rotary evaporator is mainly that the principle is controlled by electronic equipment, a flask is enabled to rotate at a constant speed under the most suitable rotating speed, a solvent is enabled to form a film, the evaporation area is increased, the evaporation flask is enabled to be in a negative pressure state by a vacuum pump, the evaporation flask is placed in a water bath pot or an oil bath pot to be heated at a constant temperature while rotating, the heating temperature can be close to the boiling point of the solvent, and the solution in the flask is enabled to be heated and diffused to evaporate under the negative pressure, so that the rapid evaporation of the solvent is realized.
Most rotary evaporators used in the prior art rely on continuous heating of a water bath (oil) pot to evaporate the to-be-distilled liquid, so that not only is the energy consumption higher, but also the evaporated gaseous substances must be condensed by using tap water, ice cubes and the like to obtain fractions; more importantly, the circulating cooling water in the use process is often directly discharged, so that the water consumption is high, and the problem of limited use in a water-deficient environment exists. In the prior art, a few rotary evaporators use dry ice and the like as refrigerants or add refrigeration equipment to condense gaseous substances, but the problems of refrigerant material waste or the use of additional refrigerants and refrigeration equipment still exist.
Disclosure of Invention
The invention provides a high-efficiency intelligent self-heating rotary evaporator, which solves the problems that in the prior art, the rotary evaporator has refrigerant waste and cannot be used in a water-deficient environment.
In order to achieve the above purpose, the invention provides a high-efficiency intelligent self-heating rotary evaporator, which comprises a bracket, wherein a detachable distiller is fixed on the bracket; the distiller is driven to rotate by a rotating motor;
the distiller comprises an inner-layer distillation bottle and an outer-layer distillation jacket which can coaxially rotate and are used for containing liquid to be distilled, and a fluid channel is formed between the distillation bottle and the distillation jacket; a jacket opening pipe is formed at the side wall of the distillation jacket, and a jacket assembly capable of controlling the feeding and discharging of fluid is arranged in the jacket opening pipe;
a feed pipe for feeding the distilled liquid to be distilled and a concentrated liquid discharge pipe for discharging the distilled concentrated liquid are respectively arranged in a distillation channel of the distillation bottle of the distiller; a discharge hole for discharging gaseous substances formed by evaporation is formed in the side wall of the distillation channel;
the discharge port is communicated with the steam inlet of the steam compressor, gaseous substances formed by distillation of the distiller are compressed into high-temperature fluid through the steam compressor, the high-temperature fluid flows out through the fluid outlet of the steam compressor and enters the fluid channel through the jacket assembly, heat exchange between the high-temperature fluid and liquid to be distilled is realized at the outer wall of the distillation flask, and heating distillation of the liquid to be distilled is completed.
Preferably, the jacket opening pipe is formed on the distillation jacket at a position which is far from the distillation channel side and opposite to the distillation channel.
Specifically, high-efficient intelligent self-heat supply type rotary evaporator include:
the fluid inlet pipe is communicated with the fluid outlet to realize the entry of the high-temperature fluid;
a fluid discharge pipe for discharging the fluid after heat exchange;
the jacket cleaning liquid inlet pipe is used for realizing the entering of cleaning liquid;
the jacket cleaning drain pipe is used for realizing the discharge of cleaning liquid;
and the jacket vent pipe is used for communicating with the atmosphere.
Specifically, high-efficient intelligent self-heat supply type rotary evaporator:
the fluid liquid inlet pipe, the jacket cleaning liquid inlet pipe and the jacket vent pipe extend into the upper area of the working position of the distillation flask in the fluid channel;
the fluid drain and the jacket wash drain extend into a bottom region of the fluid passageway where the distillation jacket operates.
Specifically, the rotary evaporator is further provided with a jacket plug for fixing the position of the jacket assembly, and the jacket plug is stationary fixed through a jacket plug bracket;
the jacket plug and the jacket opening pipe are in airtight fit, and the distillation jacket is rotated relative to the jacket plug through small bearings arranged on the outer wall of the jacket opening pipe and the inner side of the jacket plug.
Specifically, the distillation jacket comprises a sleeve part integrally formed with the distillation flask of the inner layer, and a spherical crown part which can be buckled with the sleeve part to realize airtight connection.
Specifically, still be provided with in the distillation passageway and be used for realizing still the distillation flask breather pipe of distillation flask and atmospheric phase intercommunication, and stretch into respectively be used for realizing the feeding of the interior washing liquid of distillation flask and the washing liquid discharge tube of discharge.
Specifically, an electric heating belt is wrapped on the outer side of the feeding pipe and used for starting heating when the temperature of the distillate is too low; the outer layer of the electric heating belt is provided with a glass fiber belt for realizing heat insulation and fixation of the electric heating belt, and a heating temperature sensor probe is arranged between the electric heating belt and the feeding pipe;
the discharge port is connected with the steam compressor through a steam pipeline, and a steam temperature sensor and/or a steam pressure sensor are arranged at the steam pipeline.
Specifically, the inlet pipe, the concentrated solution discharge pipe, the cleaning solution inlet pipe, the cleaning solution discharge pipe, the fluid inlet pipe, the fluid discharge pipe, the jacket cleaning inlet pipe and the jacket cleaning discharge pipe are all connected with the intelligent metering pump, and the intelligent metering pump controls the accurate quantitative sequential completion of liquid conveying.
Specifically, the rotating motor, the vapor compressor, the jacket vent pipe, the electric heating belt, the intelligent metering pump, the heating temperature sensor, the vapor pressure sensor and the distillation flask vent pipe are all in communication connection with intelligent control equipment, the intelligent control equipment controls the distillation to be completed, and respective working parameters can be set according to the needs.
The high-efficiency intelligent self-heating rotary evaporator is based on the structure of the existing rotary evaporator, adopts a distiller with a jacket type structure capable of coaxially rotating to distill distillate, and compresses gaseous substances formed by evaporation by utilizing a vapor compressor, and the heat content of the compressed fluid is increased compared with that of vapor which is not compressed before, so that the temperature is obviously increased; the high-temperature fluid enters a fluid channel in the distiller, a heat exchange surface is formed on the outer wall of the distiller, and the compressed fluid and the sample to be distilled are subjected to heat exchange by using a remarkable temperature difference, so that the sample to be distilled is continuously heated; in addition, as the distillation flask and the distillation jacket synchronously rotate, the continuous and efficient heating can be carried out on the sample to be distilled more fully, so that not only is the condensing system component of the original rotary evaporator saved, but also the refrigerants such as cooling water, ice cubes and dry ice are saved, the water resource is greatly saved, the water bath (oil) pot, the lifting system and the angle adjusting system component are also saved, and the energy consumption and the use cost are reduced.
The invention uses a computer to intelligently control each link of distillation, and uses a multi-head precise plunger metering pump to control each liquid inlet and outlet, thus being especially suitable for water-deficient environments, microgravity environments and environments with higher requirements in the aspects of energy conservation and maintenance.
Drawings
FIG. 1 is a schematic structural diagram of a high-efficiency intelligent self-heating rotary evaporator according to the invention;
FIG. 2 is a schematic view showing a structure and connection of the distillation jacket according to the present invention;
FIG. 3 is a schematic view of a second construction of the distillation jacket according to the present invention;
FIG. 4 is a schematic view of a third construction of a distillation jacket according to the present invention;
marked in the figure as: 1-rack, 2-distiller, 3-rotary motor, 4-distillation channel, 5-distillation flask, 6-discharge port, 7-vapor compressor, 8-vapor inlet, 9-fluid outlet, 10-distillation jacket, 11-jacket open tube, 12-fluid channel, 13-small bearing, 14-jacket plug, 15-jacket vent tube, 16-fluid feed tube, 17-fluid drain tube, 18-jacket wash feed tube, 19-jacket wash drain tube, 20-jacket plug rack, 21-feed tube, 22-concentrate discharge tube, 23-wash feed tube, 24-wash drain tube, 25-intelligent metering pump, 26-electric heating belt, 27-glass fiber ribbon, 28-heating temperature sensor, 29-vapor conduit, 30-vapor temperature sensor, 31-vapor pressure sensor, 32-intelligent control device, 33-distillation flask vent tube, 34-sleeve portion, 35-spherical crown portion, 36-jacket connecting flange, 37-gasket, 38-locking bolt, 39-vacuum pump, 40-buffer bottle, 41-feed channel plug, 42-flange.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, the high-efficiency intelligent self-heating rotary evaporator of the present invention comprises: comprises a bracket 1, a detachable distiller 2, a rotating motor 3 capable of controlling the distiller 2 to rotate, a control component for controlling the rotating speed and the heating temperature and the like (not shown in the figure) are fixed on the bracket 1. The distiller 2 is detachably fixed with a transmission body connected with the rotating motor 3, and is driven by the rotating motor 3 to perform rotary distillation.
The structure shown in fig. 1, the distiller 2 comprises an inner layer distillation flask 5 and an outer layer distillation jacket 10 which are coaxially arranged and can coaxially rotate, the distillation flask 5 is used for containing a liquid to be distilled, the distillation jacket 10 is provided with a structure matched with the distillation flask 5 and is sleeved outside the distillation flask 5, and a fluid channel 12 for fluid to pass through and perform heat exchange is formed between the distillation flask 5 and the distillation jacket 10; meanwhile, a jacket opening pipe 11 is formed at the side wall of the distillation jacket 10, and a jacket assembly capable of controlling the fluid to enter and exit is arranged in the jacket opening pipe 11. The distiller 2 is made of glass, polytetrafluoroethylene, organic glass or corrosion-resistant metal material (such as titanium). Alternatively, the distiller 2 may be processed conventionally or formed by 3D printing, and if the temperature of the liquid after compression exceeds 95 ℃ or the liquid to be distilled contains concentrated acid, the distiller 2 may be made of glass or polytetrafluoroethylene.
As shown in fig. 1, a distillation channel 4 of the distillation flask 2 is provided with a feed pipe 21 for feeding the distilled liquid and a concentrated liquid discharge pipe 22 for discharging the distilled concentrated liquid; and a discharge port 6 is formed at the side wall of the distillation channel 4 for discharging the gaseous substances formed by evaporation.
The high-efficiency intelligent self-heating rotary evaporator shown in fig. 1 is further provided with a vapor compressor 7, wherein a vapor inlet 8 of the vapor compressor 7 is communicated with the discharge port 6 through a vapor pipeline 29, gaseous substances formed by evaporation of the distiller 2 pass through the distillation channel 4 and then enter the vapor compressor 7 through the vapor channel 29 to be compressed into high-temperature fluid, the high-temperature fluid flows out through a fluid outlet 9 of the vapor compressor 7 and enters a fluid channel 12 formed between the distillation flask 5 and the distillation jacket 10, and heat exchange between the high-temperature fluid and to-be-distilled liquid is realized at the outer wall of the distillation flask 5, so that heating distillation of the to-be-distilled liquid is completed. And a steam temperature sensor 30 and/or a steam pressure sensor 31 are/is also arranged at the steam pipeline 29, and are used for monitoring the temperature and pressure of the steam of the distillation system from time to time so as to control the distillation process. In the rotary distillation process, liquid level sensors can be additionally arranged in the distillation flask 5 and/or the distillation jacket 10 according to the requirement, and the liquid level sensors are used for acquiring and controlling liquid level information under the condition that the distiller 2 is made of a non-transparent material. A vacuum pump 39 and/or a buffer bottle 40 can be added between the discharge port 6 and the steam inlet 8 according to the characteristics of the material to be distilled, and the vacuum pump 39 and the buffer bottle 40 are used for providing sufficient and stable steam for the compressor 7 so as to compress smoothly.
Specifically, in the rotary evaporator according to the present invention, the vapor compressor 7 may be a roots-type compressor, a centrifugal compressor, a piston-type compressor, a screw-type compressor, or a vane-type compressor, and as an alternative, the vapor compressor may be a variable frequency type.
The rotary evaporator shown in fig. 1, the jacket assembly specifically comprises a fluid inlet pipe 16 and a fluid outlet pipe 17; the fluid inlet pipe 16 is communicated with the fluid outlet 9 of the vapor compressor 7, so that the high-temperature fluid is introduced; and the fluid discharge pipe 17 is used for discharging the fluid after heat exchange.
In order to facilitate the cleaning of the distillation jacket 10 and the fluid channel 12 after distillation is completed, the jacket assembly of the rotary evaporator according to the present invention is further provided with a jacket cleaning liquid inlet pipe 18, a jacket cleaning liquid outlet pipe 19 and a jacket vent pipe 15. The jacket cleaning liquid inlet pipe 18 and the jacket cleaning liquid outlet pipe 19 are respectively used for feeding and discharging cleaning liquid, and the jacket vent pipe 15 is used for ensuring the atmosphere in the fluid channel 12 and controlling the communication and blocking of the fluid channel 12 and the atmosphere through a switch arranged on the jacket vent pipe. The cleaning agent is selected from conventional pure water or ethanol solvent.
The materials of the fluid inlet pipe 16, the fluid drain pipe 17, the jacket cleaning inlet pipe 18, the jacket cleaning drain pipe 19 and the jacket vent pipe 15 can be glass, organic glass or polytetrafluoroethylene.
As shown in the rotary evaporator of fig. 1, the jacket opening pipe 11 is formed on the side of the distillation jacket 10 away from the distillation passage 4, and the jacket opening pipe 11 is preferably formed at a position corresponding to the distillation passage 4, and more preferably, the axis of the jacket opening pipe 11 is controlled to coincide with the rotation axis of the distiller 2.
The pipe diameters of the jacket opening pipe 11 only need to be according to the sizes of the fluid inlet pipe 16, the fluid drain pipe 17, the jacket cleaning inlet pipe 18, the jacket cleaning drain pipe 19 and the jacket vent pipe 15, so that the fluid inlet pipe 16, the fluid drain pipe 17, the jacket cleaning inlet pipe 18, the jacket cleaning drain pipe 19 and the jacket vent pipe 15 are ensured to be reasonably arranged in the jacket opening pipe 11.
In the jacket assembly shown in fig. 1, the fluid feed pipe 16 and the jacket cleaning feed pipe 18 extend into the fluid channel 12 through the jacket opening pipe 11 and further into the upper region of the operating position of the distillation flask 5; the fluid drain pipe 17 and the jacket cleaning drain pipe 19 extend into the fluid channel 12 through the jacket opening pipe 11 and further extend into the bottom area of the working position of the distillation jacket 10, preferably the lowest position of the working position; one end of the jacket vent pipe 15 extends into the gas area at the upper part of the distillation jacket 10, and the other end is communicated with the atmosphere. The high-temperature fluid (due to the pressure) entering the fluid channel 12 is directly sprayed to the outer wall of the distillation flask 5, and in the process of rotating the distillation flask 5, the Gao Wenliu performs heat exchange with the liquid to be distilled in the distillation flask 5, so as to heat and distill the liquid to be distilled, and the fluid after heat exchange and temperature reduction is discharged and collected through the fluid discharge tube 17. Similarly, the cleaning solution enters the distillation jacket 10 through the jacket cleaning liquid inlet pipe 18, is directly sprayed to the outer wall of the distillation flask 5 under the action of gravity, is cleaned in the process of rotating the distillation flask 5, and the cleaned waste liquid is discharged through the jacket cleaning liquid outlet pipe 19.
In order to ensure the tightness and the rotation performance of the distillation jacket 10, the rotary evaporator as shown in fig. 1 is further provided with a jacket stopper 14 for fixing the position of the jacket assembly, and the jacket stopper 14 is fixed by a jacket stopper holder 20, so that the jacket stopper 14 is ensured not to rotate with the distillation apparatus 2.
As shown in fig. 1, the jacket plug 14 is plugged into the jacket open tube 11 to realize sealing connection and fit between the jacket open tube 11 and the jacket open tube 11, a small bearing 13 (with a dust cover) is arranged at the outer side of the jacket open tube 11, the jacket open tube 11 and the inner ring of the small bearing 13 are fixedly connected and sealed through a locking binding band (or a polytetrafluoroethylene belt is wound between the jacket open tube 11 and the inner ring of the small bearing 13 for sealing), and the outer ring of the small bearing 13 and the jacket plug 14 are fixedly connected and sealed through a locking binding band (or a polytetrafluoroethylene belt is wound between the outer ring of the small bearing 13 and the jacket plug 14 for sealing). Further, the gap between the jacket opening tube 11, the small bearing 13 and the jacket plug 14 is filled and sealed by polytetrafluoroethylene packing. The sealed jacket plug 14 and jacket split sleeve 11 are closed and the jacket split sleeve 11 can keep independent movement due to the small bearing 13, so that the rotary movement of the distillation jacket 10 relative to the jacket plug 14 is realized, namely, the jacket plug 14 is always kept static when the distiller 2 rotates for distillation.
As shown in fig. 1, the jacket plug 14 is provided with six holes for respectively accommodating the jacket vent pipe 15, the fluid inlet pipe 16, the fluid outlet pipe 17, the jacket cleaning inlet pipe 18, the jacket cleaning outlet pipe 19, and the plug passing pipe of the liquid level sensor arranged in the distillation jacket 10, and respectively for passing through the atmosphere, the high-temperature fluid feed, the fluid discharge, the cleaning liquid feed, the cleaning liquid discharge, the liquid level sensor in the jacket, and the like. The jacket plug 14 supports the above-mentioned piping and seals the jacket opening tube 11. The jacket plug 14 may be made of polytetrafluoroethylene or glass. More preferably, grooves are arranged on the outer surfaces of the jacket opening pipe 11, the small bearing 13 and the jacket plug 14, so that the jacket opening pipe, the small bearing 13 and the jacket plug are convenient to tighten and fix.
The steam jacket 10 of the present invention has the same shape as the flask 5 with a round bottom, as shown in the structure of fig. 2. In order to facilitate the installation of the steam jacket 10, the steam jacket 10 of the invention is provided with a two-part structure capable of being tightly buckled, namely, comprises a sleeve part 34 integrally formed with the distillation flask 5 of the inner layer and a spherical crown part 35 capable of being buckled with the sleeve part 34 to realize the sealing connection; the sleeve part 34 and the spherical crown part 35 are connected to each other to realize airtight buckling, and the sleeve part 34 can be processed conventionally or formed by 3D printing. As shown in fig. 2, a jacket connection flange 36 is provided at the buckling position of the sleeve part 34 and the spherical crown part 35, a corrosion-resistant sealing gasket 37 (optionally polytetrafluoroethylene) is sandwiched therebetween, and the sleeve part and the spherical crown part are connected and fixed by a locking bolt 38, so that the whole buckling structure is convenient for processing and installing traditional glass.
Fig. 3 shows a second applicable construction of the distillation jacket 10, i.e. the distillation jacket 10 corresponds to the bottom of the round bottom flask portion of the flask 5 being a perforated planar structure.
Fig. 4 shows a third applicable construction of the distillation jacket 10, i.e. the distillation jacket 10 corresponds to the bottom of the round bottom flask portion of the flask 5 being of a perforated funnel-shaped construction.
In order to facilitate the cleaning of the distillation flask 2 after distillation, as shown in fig. 1, a cleaning liquid feeding pipe 23 and a cleaning liquid discharging pipe 24 are further arranged in the distillation channel 4, and the cleaning liquid feeding pipe 23 and the cleaning liquid discharging pipe 24 extend into the distillation flask 5 for feeding and discharging the cleaning agent respectively. The cleaning agent can be common pure water or ethanol solvent, etc. In addition, a distillation flask vent pipe 33 is provided in the distillation passage 4 to allow the distillation flask 5 to communicate with the atmosphere. The distillation flask breather pipe 33 is provided with a switch for controlling the communication and blocking between the interior of the distillation flask 5 and the atmosphere.
As shown in fig. 1, the distillation passage 4 is provided at its end remote from the distiller 2 with a feed passage port plug 41, and the feed passage port plug 41 is adapted to support six pipes in total, namely, a feed pipe 21, a concentrate discharge pipe 22, a cleaning liquid feed pipe 23, a cleaning liquid discharge pipe 24, a distillation flask breather pipe 33 and a steam pipe 29, and to isolate the interior of the distillation flask 5 from the atmosphere. The feed channel port plug 41 is in sealing connection with the flange 42 through a glass grinding port, the flange 42 is fixed at one end of the bearing housing of the rotating motor 3 far away from the distiller 2 through a locking nut, and a polytetrafluoroethylene sealing ring is arranged between the flange 42 and the bearing housing of the rotating motor 3.
In order to further enhance the distillation effect of the whole device, the rotary evaporator according to the invention is preferably subjected to a certain heat treatment before the liquid to be distilled enters the distillation flask 5. In the structure shown in fig. 1, an electric heating belt 26 is wrapped on the outer side of the feeding pipe 21, and is used for starting heating when the temperature of the distillate is too low, so that the subsequent distillation can be conveniently, quickly and smoothly completed; the outer layer of the electric heating belt 26 is provided with a glass fiber belt 27 for realizing heat insulation and fixation of the electric heating belt 26, and further, a heating temperature sensor 28 probe is arranged between the electric heating belt 26 and the feeding pipe 21 for monitoring the heating temperature.
In order to further control the metering in the whole distillation process, as shown in fig. 1, the feeding pipe 21, the concentrated solution discharging pipe 22, the cleaning solution feeding pipe 23, the cleaning solution discharging pipe 24, the fluid feeding pipe 16, the fluid discharging pipe 17, the jacket cleaning feeding pipe 18 and the jacket cleaning solution discharging pipe 19 are all connected with the intelligent metering pump 25, and the intelligent metering pump 25 is used for controlling the opening and closing of each pipeline so as to control the feeding and discharging liquid of each pipeline, thus accurately and quantitatively completing the liquid conveying in sequence. The intelligent metering pump 25 is preferably an intelligent multi-head precision plunger metering pump.
In order to further realize the automatic control of the whole distillation process, as shown in fig. 1, the rotary motor 3, the vapor compressor 7, the electric heating belt 26, the intelligent metering pump 25, the heating temperature sensor 28, the vapor temperature sensor 30, the vapor pressure sensor 31, the jacket vent pipe 15 switch and the distillation flask vent pipe 33 switch are all in communication connection with the intelligent control device 32, and each link of distillation is completed by the corresponding control panel or the intelligent control of a computer, and each working parameter can be set as required.
According to the rotary evaporator, the vapor compressor and the distiller with the jacket type structure rotating together with the distillation flask are adopted, and the condensing system component is not used for condensing evaporated gaseous substances, so that refrigerants such as cooling water, ice cubes and dry ice are not needed, meanwhile, the evaporation of the distilled liquid is efficiently subjected to heat exchange by utilizing the obvious temperature difference between compressed fluid and a sample to be distilled, the enthalpy value of the sample to be distilled is increased by utilizing the self evaporation latent heat, continuous and efficient heating of the sample to be distilled is realized, and when the temperature of the sample to be distilled is too low, the electric heating belt is used for starting heating, and water (oil) bath heating is not needed, so that water resources are greatly saved, heat energy is saved, waste is avoided, and the rotary evaporator is particularly suitable for a water-shortage environment, a microgravity environment and an environment with higher requirements in the aspects of energy conservation and maintenance.
The foregoing has outlined rather broadly the more detailed description of embodiments of the invention, wherein the principles and embodiments of the invention are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (8)
1. The efficient intelligent self-heating rotary evaporator is characterized by comprising a bracket (1), wherein a detachable distiller (2) is fixed on the bracket (1); the distiller (2) is driven to rotate by a rotating motor (3);
the distiller (2) comprises an inner-layer distiller (5) and an outer-layer distillation jacket (10) which can coaxially rotate and are used for containing liquid to be distilled, and a fluid channel (12) is formed between the distiller (5) and the distillation jacket (10); a jacket opening pipe (11) is formed at the side wall of the distillation jacket (10), and a jacket assembly capable of controlling the feeding and discharging of fluid is arranged in the jacket opening pipe (11);
a feed pipe (21) for feeding the to-be-distilled liquid and a concentrated liquid discharge pipe (22) for discharging the concentrated liquid after distillation are respectively arranged in a distillation channel (4) of the distillation flask (5) of the distiller (2); a discharge hole (6) for discharging the gaseous substances formed by evaporation is formed in the side wall of the distillation channel (4);
the discharge port (6) is communicated with a steam inlet (8) of a steam compressor (7), gaseous substances formed by evaporation of the distiller (2) are compressed into high-temperature fluid through the steam compressor (7), the high-temperature fluid flows out through a fluid outlet (9) of the steam compressor (7) and enters the fluid channel (12) through the jacket assembly, heat exchange between the high-temperature fluid and to-be-distilled liquid is realized at the outer wall of the distillation bottle (5), and heating distillation of the to-be-distilled liquid is completed;
the jacket assembly includes:
a fluid inlet pipe (16), wherein the fluid inlet pipe (16) is communicated with the fluid outlet (9) to realize the entry of the high-temperature fluid;
a fluid discharge pipe (17), wherein the fluid discharge pipe (17) is used for discharging fluid after heat exchange;
a jacket cleaning liquid inlet pipe (18), wherein the jacket cleaning liquid inlet pipe (18) is used for realizing the inlet of cleaning liquid;
a jacket cleaning drain pipe (19), wherein the jacket cleaning drain pipe (19) is used for realizing the discharge of cleaning liquid;
a jacket vent pipe (15), wherein the jacket vent pipe (15) is used for communicating with the atmosphere;
the fluid inlet pipe (16) and the jacket cleaning inlet pipe (18) extend into the upper area of the working position of the distillation flask (5) in the fluid channel (12);
the fluid drain (17) and the jacket cleaning drain (19) extend into the fluid channel (12) in the bottom region of the working position of the distillation jacket (10).
2. The high-efficiency intelligent self-heating rotary evaporator according to claim 1, wherein the jacket opening pipe (11) is formed on the distillation jacket (10) at a position which is far away from one side of the distillation channel (4) and corresponds to the distillation channel (4).
3. The efficient and intelligent self-heating rotary evaporator according to claim 1, wherein the rotary evaporator is further provided with a jacket plug (14) for fixing the position of the jacket assembly, and the jacket plug (14) is stationary fixed through a jacket plug bracket (20);
the jacket plug (14) and the jacket opening tube (11) are in airtight fit with each other, and the rotary motion of the distillation jacket (10) relative to the jacket plug (14) is realized through a small bearing (13) arranged on the outer wall of the jacket opening tube (11) and the inner side of the jacket plug (14).
4. The efficient and intelligent self-heating rotary evaporator according to claim 1, wherein the distillation jacket (10) comprises a sleeve part (34) integrally formed with the distillation flask (5) of the inner layer and a spherical cap part (35) which can be buckled with the sleeve part (34) to realize airtight connection.
5. A high-efficiency intelligent self-heating rotary evaporator according to claim 1, characterized in that a distillation flask breather pipe (33) for realizing the communication between the distillation flask (5) and the atmosphere, and a cleaning liquid feed pipe (23) and a cleaning liquid discharge pipe (24) which extend into the distillation flask (5) and are respectively used for realizing the feeding and discharging of the cleaning liquid in the distillation flask (5) are also arranged in the distillation channel (4).
6. The efficient intelligent self-heating rotary evaporator according to claim 5, wherein an electric heating belt (26) is wound on the outer side of the feeding pipe (21) and used for starting heating when the temperature of distilled liquid is too low; the outer layer of the electric heating belt (26) is provided with a glass fiber belt (27) for realizing heat insulation and fixation of the electric heating belt (26), and a heating temperature sensor (28) probe is arranged between the electric heating belt (26) and the feeding pipe (21);
the discharge port (6) is connected with the steam compressor (7) through a steam pipeline (29), and a steam temperature sensor (30) and/or a steam pressure sensor (31) are arranged at the steam pipeline (29).
7. The efficient and intelligent self-heating rotary evaporator according to claim 6, wherein the feeding pipe (21), the concentrated solution discharging pipe (22), the cleaning solution feeding pipe (23), the cleaning solution discharging pipe (24), the fluid feeding pipe (16), the fluid discharging pipe (17), the jacket cleaning feeding pipe (18) and the jacket cleaning discharging pipe (19) are all connected with an intelligent metering pump (25), and the intelligent metering pump (25) controls the accurate quantification to sequentially finish the liquid conveying.
8. The efficient and intelligent self-heating rotary evaporator according to claim 7, wherein the rotary motor (3), the steam compressor (7), the jacket vent pipe (15), the electric heating belt (26), the intelligent metering pump (25), the heating temperature sensor (28), the steam temperature sensor (30), the steam pressure sensor (31) and the distillation flask vent pipe (33) are all in communication connection with the intelligent control device (32), the intelligent control device (32) controls the distillation, and respective working parameters can be set as required.
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