阅读说明：本技术 一种可同时进行多位点蒸汽温度监测的旋转蒸发仪 (Rotary evaporator capable of simultaneously monitoring steam temperature at multiple positions ) 是由 温淑瑶 于 2019-08-02 设计创作，主要内容包括：本发明涉及实验设备技术领域,特别地,涉及一种旋转蒸发仪,具体涉及一种可同时进行多位点蒸汽温度监测的旋转蒸发仪。本发明所述可同时进行多位点蒸汽温度监测的旋转蒸发仪,通过在现有旋转蒸发仪的冷凝器内和蒸发瓶内同时设立温度计的方式,对所述旋转蒸发仪的蒸汽温度进行多位点实时监测。本发明所述旋转蒸发仪通过将第一温度计从外侧插接并伸至所述冷凝器的冷凝腔内的方式,实现对蒸发系统内冷凝器位置处蒸汽温度的监测；同时,通过将第二温度计从外插入所述蒸发瓶内的方式,实现对蒸发瓶内蒸汽温度的监测；或者,也可以通过将第三温度计的一端固定在所述传动体的玻璃轴内部,另一端插入所述蒸发瓶内的方式,实现对蒸发瓶内蒸汽温度的监测。(The invention relates to the technical field of experimental equipment, in particular to a rotary evaporator, and particularly relates to a rotary evaporator capable of monitoring the temperature of steam at multiple positions simultaneously. The rotary evaporator capable of simultaneously monitoring the steam temperature at multiple positions monitors the steam temperature of the rotary evaporator at multiple positions in real time in a mode that thermometers are arranged in a condenser and an evaporation bottle of the conventional rotary evaporator at the same time. The rotary evaporator realizes the monitoring of the steam temperature at the position of the condenser in the evaporation system by inserting the first thermometer from the outer side and extending the first thermometer into the condensation cavity of the condenser; meanwhile, the temperature of the steam in the evaporation bottle is monitored in a mode that a second thermometer is inserted into the evaporation bottle from the outside; alternatively, the temperature of the steam in the evaporation flask may be monitored by fixing one end of a third thermometer to the inside of the glass shaft of the transmission body and inserting the other end of the third thermometer into the evaporation flask.)

1. A rotary evaporator capable of simultaneously monitoring the temperature of steam at multiple points, which is characterized by comprising:

The device comprises a support (1), wherein a rotating motor (2), an evaporation bottle (3), a condenser (4) and a transmission body (7) for communicating the evaporation bottle (3) and the condenser (4) are fixed on the support (1); a glass shaft (12) 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); the rotary motor (2) drives the evaporation bottle (3) detachably fixed with the rotary motor to rotate through the transmission body (7), and the evaporation bottle (3) is heated by the controlled heating component to evaporate and concentrate the liquid to be distilled; the steam formed by evaporation enters a receiving bottle (5) connected with the condenser (4) after being condensed by the condenser (4) to finish the collection of fractions;

A condensation cavity interface (11) for accommodating a first thermometer (8a) to extend into the rotary evaporator is arranged on the side wall of a condensation cavity (10) of the condenser (4), one end of a temperature sensing end (9) of the first thermometer (8a) extends into the condensation cavity (10) or a steam area in the glass shaft (12) to realize monitoring of the temperature of steam in the system, and the first thermometer (8a) and the condensation cavity interface (11) are sealed through a first sealing component;

The lateral wall department of evaporating flask (3) is provided with and holds second thermometer (8b) and stretch into evaporating flask socket (16) inside evaporating flask (3), temperature sensing end (9) of second thermometer (8b) stretch into reach the regional department of steam of evaporating flask (3) realizes right the temperature monitoring of steam in evaporating flask (3), second thermometer (8b) with realize sealing through second seal assembly between evaporating flask socket (16).

2. A rotary evaporator capable of simultaneously monitoring the temperature of steam at multiple points, which is characterized by comprising:

The device comprises a support (1), wherein a rotating motor (2), an evaporation bottle (3), a condenser (4) and a transmission body (7) for communicating the evaporation bottle (3) and the condenser (4) are fixed on the support (1); a glass shaft (12) 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); the rotary motor (2) drives the evaporation bottle (3) detachably fixed with the rotary motor to rotate through the transmission body (7), and the evaporation bottle (3) is heated by the controlled heating component to evaporate and concentrate the liquid to be distilled; the steam formed by evaporation enters a receiving bottle (5) connected with the condenser (4) after being condensed by the condenser (4) to finish the collection of fractions;

A condensation cavity interface (11) for accommodating a first thermometer (8a) to extend into the rotary evaporator is arranged on the side wall of a condensation cavity (10) of the condenser (4), one end of a temperature sensing end (9) of the first thermometer (8a) extends into the condensation cavity (10) or a steam area in the glass shaft (12) to realize monitoring of the temperature of steam in the system, and the first thermometer (8a) and the condensation cavity interface (11) are sealed through a first sealing component;

A third thermometer (8c) is arranged in the glass shaft (12) of the transmission body (7), the third thermometer (8c) is fixed on the inner wall of the glass shaft (12) through a fixing component, and a temperature sensing end (9) of the third thermometer (8c) extends into a steam area part in the evaporation bottle (3) to realize the monitoring of the temperature of steam in the evaporation bottle (3).

3. A rotary evaporator capable of simultaneous multi-site steam temperature monitoring according to claim 1 or 2, characterized in that the temperature sensing end (9) of the first thermometer (8a) is located at the intersection of the condensation chamber (10) and the glass axis (12); preferably, the temperature sensing end (9) of the first thermometer (8a) is positioned at the position where the axial center line of the glass shaft (12) and the condensation cavity (10) are intersected.

4. The rotary evaporator capable of simultaneously monitoring the temperatures of multi-point steam according to any one of claims 1 to 3, wherein the first sealing assembly comprises a sealing base which is arranged along the circumferential direction of the condensation cavity insertion port (11) and protrudes out of the outer wall of the condenser (4), a sealing cover which is sleeved on the outer wall of the first thermometer (8a) and is connected with the sealing base, and a sealing gasket and a sealing ring which are arranged between the sealing base and the sealing cover.

5. a rotary evaporator capable of multi-site steam temperature monitoring simultaneously according to any of claims 1-4, characterized in that the graduation marks and numerical indications of the second thermometer (8b) are located on the outside of the evaporator flask (3).

6. the rotary evaporator capable of simultaneously monitoring the temperature of steam at multiple positions according to any one of claims 1 to 5, wherein the evaporator bottle socket (16) is arranged on an extension line connecting the center point of the feeding hole of the evaporator bottle (3) and the center point of the evaporator bottle (3), so that the axis of the second thermometer (8b) coincides with the rotation axis of the evaporator bottle (3).

7. The rotary evaporator capable of simultaneously monitoring the temperature of steam at multiple points as claimed in any one of claims 1 to 6, wherein the second sealing assembly comprises a sealing base which is circumferentially arranged along the evaporator bottle socket (16) and protrudes out of the outer wall of the evaporator bottle (3), a sealing cover which is sleeved on the outer wall of the second thermometer (8b) and can be connected with the sealing base, and a sealing gasket and a sealing ring which are arranged between the sealing base and the sealing cover.

8. a rotary evaporator according to any of the claims 2-7, where the third thermometer (8c) is arranged parallel to the rotation axis of the transmission body (7).

9. the rotary evaporator capable of simultaneously monitoring the temperatures of multiple steam points according to any one of claims 2 to 8, wherein the fixing component comprises a thermometer fixing buckle (14) arranged at the inner wall of the glass shaft (12) and a thermometer connecting buckle (15) matched with the thermometer fixing buckle and arranged at one end of the third thermometer (8c) far away from the temperature sensing end (9), the thermometer fixing buckle (14) and the thermometer connecting buckle (15) are fixedly connected, the third thermometer (8c) is fastened with the inner wall of the glass shaft (12), and the scale lines and the digital marks of the third thermometer (8c) are positioned in a visual range at one side of the evaporation bottle.

10. The rotary evaporator capable of simultaneously carrying out multi-site steam temperature monitoring according to any one of claims 1 to 9, characterized in that the heating component comprises a water bath, an oil bath, or an electric heating belt (6) wound at the outer wall of the evaporation bottle (3) along the circumferential direction;

The outer layer of electric heating area (6) is provided with the glass fiber area, realizes the thermal-insulated and fixed of electric heating area (6), evaporating flask (3) outer wall with establish temperature sensor between electric heating area (6), the outer wall department of evaporating flask (3) is provided with fixed knot (13) of heating area for realize the fixing of electric heating area (6).

Technical Field

The invention relates to the technical field of experimental equipment, in particular to a rotary evaporator, and particularly relates to a rotary evaporator capable of monitoring the temperature of steam at multiple positions simultaneously.

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 rotated at a constant speed to form a film at the most suitable rotating speed, the evaporation area is increased, the evaporation flask is in a negative pressure state through a vacuum pump, the evaporation flask is rotated and placed in a water bath kettle or an oil bath kettle to be heated at a constant temperature, the heating temperature is set to be close to the boiling point of the solvent, the solution in the bottle is heated and diffused under the negative pressure to be evaporated, 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 controller control water (oil) bath usually, lead to actual temperature and the heating control temperature who sets for generally to have 1-3 ℃ of error, and then lead to inside actual temperature of whole evaporating system and preset the temperature and can produce certain deviation, and because whole evaporating system is in the airtight state of negative pressure when operating condition, also make the inside steam temperature of rotatory evaporating system difficult survey, and then unable accuracy carries out temperature control to evaporating system, lead to unable satisfied scientific research, the actual low-cost needs of projects such as chemical industry. The rotary evaporator which adopts a temperature sensor to measure the steam temperature at the lower part of the condenser has been developed abroad, but the rotary evaporator is expensive and not beneficial to popularization, and in view of the influence of the mobility of the steam in the evaporation process, the steam temperatures of different sites of the same distillate to be treated in the evaporation system are different, only the steam temperature of a single site is measured, and the monitoring and the precise control of the steam temperature in the evaporation process can not be completely realized, so that the rotary evaporator which can simultaneously monitor the steam temperatures of multiple sites needs to be developed.

Disclosure of Invention

The invention provides a rotary evaporator capable of simultaneously monitoring multi-point steam temperature, which solves the problem that the conventional rotary evaporator cannot realize low-cost multi-point steam temperature real-time monitoring.

in order to achieve the above object, the present invention provides a rotary evaporator capable of simultaneously monitoring multiple steam temperatures, comprising:

The device comprises a bracket, a rotary motor, an evaporation bottle, a condenser and a transmission body for communicating the evaporation bottle and the condenser, wherein the bracket is fixedly provided with the rotary motor, the evaporation bottle, the condenser and the transmission body; 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; the rotary motor drives the evaporation bottle detachably fixed with the rotary motor to rotate through the transmission body, and the evaporation bottle is heated by the controlled heating assembly to evaporate and concentrate the distillate to be distilled; condensing steam formed by evaporation through a condenser, and then feeding the steam into a receiving bottle connected with the condenser to finish the collection of fractions;

A condensation cavity insertion port for accommodating a first thermometer to extend into the rotary evaporator is formed in the side wall of a condensation cavity of the condenser, one end of a temperature sensing end of the first thermometer extends into the condensation cavity or a steam area in the glass shaft to monitor the temperature of steam in the system, and the first thermometer and the condensation cavity insertion port are sealed through a first sealing assembly;

The side wall of the evaporation bottle is provided with an evaporation bottle socket for accommodating a second thermometer to extend into the evaporation bottle, the temperature sensing end of the second thermometer extends into the steam area of the evaporation bottle to realize the temperature monitoring of steam in the evaporation bottle, and the second thermometer and the evaporation bottle socket are sealed through a second sealing component.

The invention also discloses a rotary evaporator capable of simultaneously monitoring the temperature of steam at multiple positions, which comprises:

The device comprises a bracket, a rotary motor, an evaporation bottle, a condenser and a transmission body for communicating the evaporation bottle and the condenser, wherein the bracket is fixedly provided with the rotary motor, the evaporation bottle, the condenser and the transmission body; 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; the rotary motor drives the evaporation bottle detachably fixed with the rotary motor to rotate through the transmission body, and the evaporation bottle is heated by the controlled heating assembly to evaporate and concentrate the distillate to be distilled; condensing steam formed by evaporation through a condenser, and then feeding the steam into a receiving bottle connected with the condenser to finish the collection of fractions;

A condensation cavity insertion port for accommodating a first thermometer to extend into the rotary evaporator is formed in the side wall of a condensation cavity of the condenser, one end of a temperature sensing end of the first thermometer extends into the condensation cavity or a steam area in the glass shaft to monitor the temperature of steam in the system, and the first thermometer and the condensation cavity insertion port are sealed through a first sealing assembly;

The glass shaft of the transmission body is internally provided with a third thermometer, the third thermometer is fixed on the inner wall of the glass shaft through a fixing component, and the temperature sensing end of the third thermometer extends into the steam area in the evaporation bottle to realize the monitoring of the temperature of the steam in the evaporation bottle.

Specifically, the temperature sensing end of the first thermometer is positioned at the joint position of the condensation cavity and the glass shaft; preferably, the temperature sensing end of the first thermometer is located at the position where the axial center line of the glass shaft and the condensation chamber intersect.

specifically, the first sealing assembly comprises a sealing base, a sealing cover, a sealing gasket and a sealing ring, wherein the sealing base is arranged along the circumferential direction of the splicing opening of the condensation cavity and protrudes out of the outer wall of the condenser, the sealing cover is sleeved on the outer wall of the first thermometer and connected with the sealing base, and the sealing gasket and the sealing ring are arranged between the sealing base and the sealing cover.

Specifically, the scale marks and the number marks of the second thermometer are positioned on the outer side of the evaporation bottle.

Specifically, the insertion opening of the evaporation bottle is arranged on an extension line of a connecting line of a center point of the feeding opening of the evaporation bottle and a center point of the evaporation bottle, so that the axis of the second thermometer coincides with the rotation axis of the evaporation bottle.

specifically, the second sealing assembly comprises a sealing base, a sealing cover, a sealing gasket and a sealing ring, wherein the sealing base is arranged along the circumferential direction of the inserting opening of the evaporation bottle and protrudes out of the outer wall of the evaporation bottle, the sealing cover is sleeved on the outer wall of the second thermometer and can be connected with the sealing base, and the sealing gasket and the sealing ring are arranged between the sealing base and the sealing cover.

Specifically, the third thermometer is disposed in parallel with the rotation axis of the transmission body.

Specifically, 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 third thermometer, the thermometer fixing buckle and the thermometer connecting buckle are connected and fixed, the third thermometer is fastened with the inner wall of the glass shaft, and the scale marks and the digital marks of the third thermometer are located in the visible range of one side of the evaporation bottle.

Specifically, the heating component comprises a water bath, an oil bath or an electric heating belt wound on the outer wall of the evaporation bottle along the circumferential direction;

The outer layer of the electric heating belt is provided with a glass fiber belt, the electric heating belt is insulated and fixed, the outer wall of the evaporation flask is provided with a temperature sensor between the electric heating belts, and the outer wall of the evaporation flask is provided with a heating belt fixing buckle for realizing the fixation of the electric heating belt.

Preferably, the thermometer comprises a glass tube thermometer or a liquid crystal digital thermometer.

The rotary evaporator capable of simultaneously monitoring the steam temperature at multiple positions is characterized in that on the basis of the structure of the conventional rotary evaporator, thermometers are arranged in a condenser and an evaporation bottle simultaneously, so that the steam temperature in the rotary evaporator is monitored at multiple positions in real time. According to the rotary evaporator, the first thermometer is inserted from the outer side and extends into the condensation cavity of the condenser, so that the steam temperature at a position in the condensation cavity or the glass shaft of the evaporation system can be obtained at any time, and the steam temperature at a certain position in the condenser or the glass shaft in the evaporation system can be monitored; meanwhile, the temperature of the steam in the evaporation bottle is constantly obtained by inserting a second thermometer into the evaporation bottle from the outer side, so that the temperature of the steam in the evaporation bottle is monitored; or, the temperature of the steam in the evaporation bottle can be obtained in real time by fixing one end of a third thermometer in the glass shaft of the transmission body and inserting the other end of the third thermometer into the evaporation bottle, so that the temperature of the steam in the evaporation bottle can be monitored. In the rotary evaporator, each thermometer does not influence the normal use of the rotary evaporator after being installed, the problem that the temperature of steam in an evaporation system cannot be measured at low cost in the prior art is effectively solved, and the rotary evaporator has the advantages of simplicity and convenience in processing and manufacturing and low cost.

In the rotary evaporator, the scale lines and the digital marks of each thermometer can be positioned at the position with clear visual field, even if a third thermometer is arranged in the rotary evaporator, the glass shaft does not rotate along with the motor, the thermometer does not rotate along with the evaporation bottle, the scale lines and the digital marks of the glass tube thermometer are positioned in the visual range of the transmission body towards one side of the rotary evaporation bottle, the visual field is kept clear under the condition of vacuumizing, and the temperature of steam in the evaporation bottle can be accurately acquired.

The rotary evaporator capable of simultaneously monitoring the steam temperature in the system at multiple points, disclosed by the invention, has the advantages that the selected glass tube thermometer is made of glass materials in the whole body, the corrosion resistance is good, the rotary evaporator is suitable for distillation of various liquids, the processing and the manufacturing are simple and easy, and the cost is low.

The rotary evaporator capable of monitoring the steam temperature in the system at multiple points simultaneously disclosed by the invention further preferably replaces a water (oil) bath with the electric heating belt for heating, so that the rotary evaporator can be used under the water (oil) -free condition, the application range of the rotary evaporator is expanded, 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, the heat energy is saved, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic view of the structure of a rotary evaporator described in embodiment 1 of the present invention;

FIG. 2 is a schematic view of the rotary evaporator described in embodiment 2 of the present invention;

The reference numbers in the figures are: 1-bracket, 2-rotating motor, 3-evaporation flask, 4-condenser, 5-receiving flask, 6-electric heating belt, 7-driving body, 8 a-first thermometer, 8 b-second thermometer, 8 c-third thermometer, 9-temperature sensing end, 10-condensation cavity, 11-condensation cavity plug socket, 12-glass shaft, 13-heating belt fixing buckle, 14-thermometer fixing buckle, 15-thermometer connecting buckle and 16-evaporation flask plug socket.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The scheme provided by the invention is described in detail by the specific embodiment below, and the rotary evaporator provided by the invention is modified on the basis of an RE-3000A type rotary evaporator produced by Shanghai Yangrong biochemical instrument factory.