CN210751344U - Rotary evaporator based on built-in thermometer monitors steam temperature in evaporation bottle - Google Patents
Rotary evaporator based on built-in thermometer monitors steam temperature in evaporation bottle Download PDFInfo
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- CN210751344U CN210751344U CN201921244527.3U CN201921244527U CN210751344U CN 210751344 U CN210751344 U CN 210751344U CN 201921244527 U CN201921244527 U CN 201921244527U CN 210751344 U CN210751344 U CN 210751344U
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Abstract
The utility model relates to a chemical experiment equipment technical field especially, relates to a rotatory evaporimeter, concretely relates to but built-in thermometer formula rotatory evaporimeter of steam temperature in the monitoring evaporation bottle. But the built-in thermometer formula rotary evaporator of steam temperature in the monitoring evaporating flask, on the basis of current rotary evaporator structure, adopt and add the fixed knot of an at least thermometer in the glass axle of rotary evaporator transmission body inlayer, it is fixed to buckle messenger's glass thermometer with the fixed knot of thermometer assorted connector link in glass thermometer one end setting, the temperature sensing end of the thermometer other end is in evaporating flask steam, but with evaporating flask and glass flange do the window, acquire steam temperature in the evaporating flask often, realize the monitoring to steam temperature in the evaporating flask, and do not influence rotary evaporator's normal use, the measuring problem to steam temperature in the evaporating flask has been solved with low costs, the glass pipe thermometer corrosion resistance who chooses for use in addition is good, be applicable to the liquid of distilling multiple difference.
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 based on steam temperature in the monitoring evaporation bottle of built-in thermometer.
Background
The rotary evaporator is an extraction experimental device for carrying out reduced pressure distillation and concentration on materials, is a common device in a laboratory, is widely applied to experiments such as scale concentration, drying, extraction and recovery of samples and the like, and is particularly used for quickly distilling a large amount of solvents.
The rotary evaporator commonly used at present generally comprises a vacuum pumping device, a heating device, a condensing device, a rotating device and other components. The principle of the rotary evaporator is mainly that the evaporation bottle is controlled by electronic equipment, the solvent is made to form a film by rotating at a constant speed under the most suitable rotating speed, the evaporation area is increased, the evaporation flask is in a negative pressure state by a vacuum pump, the evaporation flask is placed in a water bath or an oil bath for constant temperature heating while rotating, the set heating temperature can be close to the boiling point of the solvent, so that the solution in the bottle is heated, diffused and evaporated under the negative pressure, and the rapid evaporation of the solvent is realized.
Domestic current rotatory evaporimeter is with water (oil) bath heating, use the heating temperature of temperature control instrument control water (oil) bath usually, lead to actual temperature and the heating control temperature who sets for generally to have 1-3 ℃ of error, lead to the interior actual temperature of evaporating flask to produce great deviation with the temperature of predetermineeing, and because the evaporating flask is in negative pressure airtight state when operating condition, also make the unable survey of steam temperature inside the rotatory evaporation system, can't satisfy actual needs such as scientific research, chemical industry. The rotary evaporator which adopts a temperature sensor to measure the steam temperature at the lower part of the condenser of the rotary evaporator has been developed abroad, but on one hand, the price is expensive, and on the other hand, the accurate measurement of the steam temperature in the evaporation bottle still cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides a rotary evaporator based on steam temperature in built-in thermometer monitoring evaporation bottle has solved the unable measured problem of steam temperature in the evaporation bottle that realizes of current rotary evaporator.
In order to achieve the above object, the utility model provides a rotary evaporator based on steam temperature in built-in thermometer monitoring evaporation bottle, include:
the distillation device comprises a bracket, wherein a rotary motor, an evaporation bottle, a condenser and a transmission body for connecting the evaporation bottle and the condenser are fixed on the bracket, the rotary motor drives the evaporation bottle detachably fixed with the bracket to rotate through the transmission body, the evaporation bottle completes the evaporation process of a to-be-distilled liquid under the heating of a controlled heating assembly, and steam formed by evaporation enters a receiving bottle connected with the evaporation bottle after being condensed by the condenser to complete the collection of fractions; the bottom of the condenser is connected with a receiving bottle, and the upper part of the condenser is connected with a vacuum pump;
the temperature-sensing device is characterized in that a glass shaft which is formed by a hollow glass tube and does not rotate along with the rotating motor is arranged in the transmission body, a thermometer is arranged in the glass shaft, the thermometer is fixed on the inner wall of the glass shaft through a fixing component, and the temperature-sensing end of the thermometer extends into the evaporation bottle to monitor the temperature of steam in the evaporation bottle.
The temperature sensing end of the thermometer is located at a vapor region of the evaporation bottle.
The thermometer is arranged in parallel with the rotation axis of the transmission body.
The fixing assembly comprises a thermometer fixing buckle arranged at the inner wall of the glass shaft and a thermometer connecting buckle matched with the thermometer fixing buckle and arranged at one end, far away from the temperature sensing end, of the thermometer, the thermometer fixing buckle and the thermometer connecting buckle are connected and fixed to realize the fastening of the thermometer and the inner wall of the glass shaft, and the scale marks and the digital marks of the thermometer are located in the visible range of one side of the evaporation bottle.
The thermometer fixing buckle is an L-shaped, crutch-shaped, match-shaped or 1-shaped connecting piece, and the thermometer connecting buckle is of a circular ring-shaped or hook-shaped structure.
The thermometer comprises a glass tube thermometer or a liquid crystal digital thermometer.
The heating component comprises a water bath, an oil bath or an electric heating belt arranged on the outer wall of the evaporation bottle.
The outer layer of the electric heating belt is provided with a glass fiber belt, so that the electric heating belt is insulated and fixed.
The electric heating belt is wound on the outer wall of the evaporation bottle along the circumferential direction.
The outer wall department of evaporating flask is provided with the fixed knot of heating tape for realize the fixed of electric heating tape, the outer wall of evaporating flask with establish temperature sensor (not shown in the figure) between the electric heating tape.
Can monitor the rotary evaporator of built-in thermometer of interior steam temperature of evaporating flask on the basis of current rotary evaporator structure, through fixing the one end of thermometer the inside of transmission body, the other end inserts mode in the evaporating flask can acquire steam temperature in the evaporating flask often, realizes the monitoring to steam temperature in the evaporating flask, and can not influence rotary evaporator's normal use after this glass pipe thermometer installation, has effectively solved and can't carry out the measuring problem to steam temperature in the evaporating flask among the prior art.
Rotatory evaporimeter adopts and measures the interior steam temperature of evaporating flask at the mode that rotatory evaporimeter glass axle inner wall set up glass pipe thermometer, because the glass axle is not rotatory along with the motor, the thermometer is not rotatory along with the evaporating flask, the scale mark and the digital sign of glass pipe thermometer are located the transmission body to in the visual range of rotatory evaporating flask one side, and keep the field of vision clear under the condition of evacuation, can accurately acquire the interior steam temperature of evaporating flask, just rotatory evaporimeter's manufacturing cost is lower.
But the rotatory evaporimeter of steam temperature in the monitoring evaporating flask, the glass pipe thermometer of chooseing for use has good corrosion resistance because the whole body adopts the glass material preparation to form, is applicable to the distillation of multiple different liquid, and not only manufacturing is simple and easy, and is with low costs moreover.
Can monitor rotary evaporator of interior steam temperature of evaporating flask, further preferred replaces water (oil) bath heating with electric heating belt for rotary evaporator can use under anhydrous (oil) condition, has expanded rotary evaporator's range of application. And the electric heating belt and the glass fiber belt are wound outside the evaporation bottle, so that the heating area of the evaporation bottle is increased, heat energy is saved, and the working efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of a rotary evaporator according to the present invention;
FIG. 2 is a schematic view of another embodiment of the rotary evaporator of the present invention;
the reference numbers in the figures are: 1-bracket, 2-rotating motor, 3-evaporation bottle, 4-condenser, 5-receiving bottle, 6-electric heating belt, 7-driving body, 8-thermometer, 9-temperature sensing end, 10-glass shaft, 11-thermometer fixing buckle, 12-thermometer connecting buckle and 13-heating belt fixing buckle.
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 scheme provided by the utility model is described in detail through the specific embodiment below, and the rotary evaporator is modified based on the RE-3000A rotary evaporator produced by Shanghai Yangrong biochemical instrument factory.
Referring to the structure shown in fig. 1-2, the rotary evaporator capable of monitoring the temperature of the steam in the evaporation bottle of the present invention is characterized in that it comprises:
the rotary evaporator comprises a bracket 1, wherein a rotary motor 2 (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, a control component for controlling the rotating speed and the heating temperature, and the like, which are not shown in the figure), an evaporation bottle 3 and a condenser 4 are fixed on the bracket 1, and the condenser 4 is also connected with a vacuum pump (not shown in the figure);
the rotary motor 2 drives the evaporation bottle 3 detachably fixed with the rotary motor to rotate through the transmission body 7, and a material to be concentrated is placed in the evaporation bottle 3 and is heated by the controlled heating assembly to complete an evaporation concentration process (the pressure in the evaporation bottle changes, the evaporation temperature changes along with the change of the pressure in the evaporation bottle and is different from the evaporation temperature under 1 atmospheric pressure); the steam formed by evaporation enters a receiving bottle 5 connected with the condenser 4 after being refluxed and condensed by the condenser 4, and the collection of fractions is completed.
The innermost layer of the transmission body 7 is a glass shaft 10, the glass shaft 10 does not rotate along with the evaporation bottle 3, the transmission body 7 is communicated with the evaporation bottle 3 and the condenser 4, and a steam transmission channel is formed inside the glass shaft 10, so that steam evaporated from the evaporation bottle 3 enters the condenser 4 through the channel of the glass shaft 10 to realize condensation.
In order to realize the monitoring to the inside steam temperature of evaporating flask 3 in whole evaporation process, the inside of glass axle 10 is provided with thermometer 8, thermometer 8 through fixed subassembly fixed set up in the inner wall department of glass axle 10, thermometer 8's temperature sensing end 9 stretches into the inside realization of evaporating flask 3 is right the monitoring of steam temperature in the evaporating flask 3.
The thermometer 8 preferred by the scheme of the utility model can be the most common glass tube thermometer or liquid crystal digital thermometer in the prior art. The thermometer 8 can be a glass tube thermometer, and the scale marks and the numerical marks of the thermometer are positioned in the visible range on one side of the evaporation bottle 3. The temperature measuring medium of the thermometer 8 is a temperature measuring medium which is easy to observe, and preferably, a bright color temperature measuring medium (such as red) or a temperature measuring medium with obvious luster can be selected. Preferably, the thermometer reticle and the digital mark can be used alternatively in one or more of a plurality of different bright colors, so that the thermometer reticle and the digital mark are convenient to identify and read. Preferably, the thermometer reticle and the digital mark can be embedded in the glass tube, so that the corrosion of corrosive liquid to the reticle and the digital mark is prevented, and the pollution of the reticle and the digital mark material to distillate is also avoided.
As a preferable configuration, in order to measure the temperature of the steam in the evaporation bottle 3 more accurately, the temperature sensing end 9 of the thermometer 8 is preferably extended to the steam area of the evaporation bottle 3, and preferably, the temperature sensing end 9 is extended to the central area of the evaporation bottle 3. Preferably, the thermometer 8 is disposed in parallel with the rotation axis of the transmission body 7.
In order to realize the thermometer 8 is fixed in the inner wall department of glass axle 10, the utility model discloses fixed subassembly including set up in the thermometer of glass axle 10 inner wall department is fixed detain 11, and with its adaptation set up in thermometer 8 one end is kept away from the thermometer connector link 12 of 9 one ends of temperature sensing end, the thermometer is fixed detain 11 with thermometer connector link 12 is connected fixed back, can realize the thermometer 8 with the fastening of glass axle 10 inner wall is not rotatory along with the motor.
As the preferred structure, the thermometer fixing buckle 11 of the utility model can be a connecting piece in L shape, crutch shape, match shape or 1 shape. The thermometer connecting buckle 12 is designed to be matched with and fixed to a hook-like structure, such as a circular ring or hook-shaped structure, and the circular ring or hook-shaped structure is sleeved on the outer side of the thermometer fixing buckle 11 to fasten the thermometer connecting buckle and the thermometer fixing buckle. Thermometer fixing buckle 11 and thermometer connector link 12 the effect only will thermometer 8 with the inner wall department of glass axle 10 is fixed mutually, any field can realize that the mode of connecting between the two all is applicable to the structure and scheme of the utility model.
Rotatory evaporimeter's glass axle 10's inner wall department can add a plurality of thermometers and fix knot 11 in different positions to be suitable for the fixed use of the thermometer 8 of different length and equidimension evaporation bottle, the thermometer that selects during the use is fixed to be detained 11 and will be convenient for the digit reading after thermometer 8 is fixed, promptly the fixed selection of detaining 11 of thermometer will make the steam temperature of surveying in through the visual optimum range of evaporation bottle 3 or glass flange, make things convenient for the experimenter to observe.
With the configuration shown in fig. 1, the heating element of the rotary evaporator of the present invention may be a water bath or oil bath, which are conventionally used in the art. And in order to make the rotary evaporator still be able to be used in the anhydrous state, the heating component is designed into an electric heating belt 6 which is arranged on the outer wall of the evaporation bottle 3 and is shown in the attached figure 2. In the structure shown in the attached figure 2, the electric heating belt 6 is wound on the outer wall of the evaporation bottle 3 along the circumferential direction, heats the distillate to be distilled in the evaporation bottle 3, and generates heat through the electric control of the electric heating belt 6.
Rotatory evaporimeter is further the outer wall department of evaporating flask 3 is provided with the fixed 13 of detaining of a plurality of heating tape, the fixed 13 edges of detaining of heating tape the circumference setting of evaporating flask 3, mainly used realizes electric heating tape 6's is fixed.
The rotary evaporator of the utility model is also provided with a glass fiber belt on the outer layer of the electric heating belt 6, so as to realize the fixation of the electric heating belt 6 and simultaneously contribute to heat insulation and prevent heat loss; and when the temperature sensor is fixed, a gap between the electric heating belts is ensured, so that the evaporation condition of a sample in the evaporation bottle is convenient to observe, and the accurate reading of the measured temperature is convenient to realize, preferably, a temperature sensor is arranged between the outer wall of the evaporation bottle 3 and the electric heating belts 6.
When the rotary evaporator is used, the rotary motor 2 drives the evaporation bottle 3 to rotate, a water (oil) bath kettle or an electric heating belt 6 passes through the wall of the evaporation bottle to heat the distillate to be treated, the thermometer 8 displays the steam temperature constantly, a gap is reserved between the electric heating belt 6, on one hand, the condition that a sample in the evaporation bottle is evaporated is conveniently observed, on the other hand, the measured temperature is conveniently and accurately read, and the rotating speed is not too high during reading; the glass fiber belt is arranged on the outer side of the electric heating belt and used for heat insulation and reduction of heat loss; the outer wall of the evaporation bottle is provided with a plurality of electric heating belt glass fixing buckles, so that the electric heating belts can be fixed conveniently. Experimenters can observe the temperature value of thermometer and obtain steam temperature, and then adjust the heating temperature of water (oil) bath or electric heating belt 6 as required to make steam temperature reach predetermined temperature value.
Rotatory evaporimeter, when concrete realization, can take out hollow glass axle 10 in by rotary system on current rotatory evaporimeter structure basis, fixed being provided with on its inner wall selected thermometer fixed detain 11 can, need not to reform transform other parts of evaporimeter. The thermometer fixing buckle 11 can be made of glass materials, and the manufactured thermometer fixing buckle 11 and the hollow glass shaft 10 are connected and fixed in a hot melting mode. Rotatory evaporimeter is when using, at the in-process of 3 rotatory evaporations of evaporating flask, thermometer 8 can show the steam temperature who produces often, and the staff can observe thermometer 8 and acquire steam temperature, and then adjusts the heating temperature of water (oil) bath kettle or electric heating belt 6 as required to make steam temperature reach predetermined temperature value.
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. The utility model provides a rotary evaporator based on steam temperature in built-in thermometer monitoring evaporation bottle which characterized in that includes:
the distillation device comprises a support (1), wherein a rotary motor (2), an evaporation bottle (3), a condenser (4) and a transmission body (7) for connecting the evaporation bottle (3) and the condenser (4) are fixed on the support (1), the rotary motor (2) drives the evaporation bottle (3) detachably fixed with the rotary motor through the transmission body (7) to rotate, the evaporation bottle (3) completes the evaporation process of a distillate to be treated under the heating of a controlled heating assembly, and steam formed by evaporation enters a receiving bottle (5) connected with the evaporation bottle after being condensed by the condenser (4) to complete the collection of fractions;
the temperature monitoring device is characterized in that a glass shaft (10) which is formed by a hollow glass tube and does not rotate along with the rotating motor (2) is arranged in the transmission body (7), a thermometer (8) is arranged in the glass shaft (10), the thermometer (8) is fixed on the inner wall of the glass shaft (10) through a fixing assembly, and a temperature sensing end (9) of the thermometer (8) extends into the evaporation bottle (3) to monitor the temperature of steam in the evaporation bottle (3).
2. A rotary evaporator for monitoring the temperature of steam in a flask based on a built-in thermometer according to claim 1, characterized in that the temperature sensing end (9) of the thermometer (8) is located at the steam area of the flask (3).
3. A rotary evaporator for monitoring the temperature of steam in a vaporization bottle based on a built-in thermometer according to claim 2, characterized in that the thermometer (8) is arranged parallel to the rotation axis of the driving body (7).
4. The rotary evaporator based on the built-in thermometer for monitoring the temperature of steam in the evaporation bottle as claimed in claim 3, wherein the fixing component comprises a thermometer fixing buckle (11) arranged at the inner wall of the glass shaft (10) and a thermometer connecting buckle (12) matched with the thermometer fixing buckle and arranged at one end of the thermometer (8) far away from the temperature sensing end (9), the thermometer fixing buckle (11) and the thermometer connecting buckle (12) are fixedly connected, so that the thermometer (8) is fastened with the inner wall of the glass shaft (10), and the scale mark and the digital mark of the thermometer are positioned in the visible range of one side of the evaporation bottle.
5. The rotary evaporator based on the built-in thermometer for monitoring the temperature of the steam in the evaporation flask as claimed in claim 4, wherein the thermometer fixing buckle (11) is an L-shaped, crutch-shaped, match-shaped or 1-shaped connecting piece, and the thermometer connecting buckle (12) is a circular or hook-shaped structure.
6. A rotary evaporator for monitoring the temperature of steam in a vaporization bottle based on an in-built thermometer according to claim 5, characterized in that the thermometer (8) comprises a glass tube thermometer or a liquid crystal digital thermometer.
7. A rotary evaporator for monitoring the temperature of steam in an evaporation flask based on an internal thermometer according to any of claims 1-6, characterized in that the heating component comprises a water bath, an oil bath, or an electric heating belt (6) arranged at the outer wall of the evaporation flask (3).
8. The rotary evaporator for monitoring the temperature of steam in an evaporation bottle based on a built-in thermometer is characterized in that a glass fiber tape is arranged on the outer layer of the electric heating tape (6) to realize the heat insulation and fixation of the electric heating tape (6), and a temperature sensor is arranged between the outer wall of the evaporation bottle (3) and the electric heating tape (6).
9. The rotary evaporator for monitoring the temperature of steam in a vaporization bottle based on an internal thermometer according to claim 8, characterized in that the electric heating tape (6) is wound circumferentially at the outer wall of the vaporization bottle (3).
10. The rotary evaporator for monitoring the temperature of steam in an evaporation bottle based on a built-in thermometer as claimed in claim 9, characterized in that a heating belt fixing buckle (13) is arranged at the outer wall of the evaporation bottle (3) for realizing the fixing of the electric heating belt (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244527.3U CN210751344U (en) | 2019-08-02 | 2019-08-02 | Rotary evaporator based on built-in thermometer monitors steam temperature in evaporation bottle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921244527.3U CN210751344U (en) | 2019-08-02 | 2019-08-02 | Rotary evaporator based on built-in thermometer monitors steam temperature in evaporation bottle |
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| CN210751344U true CN210751344U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368919A (en) * | 2021-05-24 | 2021-09-10 | 禹坤 | Rotary evaporator for biological sample treatment and use method thereof |
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2019
- 2019-08-02 CN CN201921244527.3U patent/CN210751344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368919A (en) * | 2021-05-24 | 2021-09-10 | 禹坤 | Rotary evaporator for biological sample treatment and use method thereof |
| CN113368919B (en) * | 2021-05-24 | 2022-06-24 | 湛江市霞山区正海生物科技有限公司 | Rotary evaporator for biological sample treatment and use method thereof |
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