Rotary evaporator

Abstract

The utility model discloses a rotary evaporator which comprises a heating base, a water bath kettle is arranged on the heating base, a connecting base is arranged on one side of the heating base, a lifting device is arranged on the connecting base, and the lifting device comprises a fixed seat connected with the connecting base and a lifting platform vertically connected with the fixed seat in a sliding mode. A rotary seat is arranged on the lifting platform, a distillation bottle and a cooling bottle are respectively arranged on two sides of the rotary seat, the distillation bottle rotates around the central axis of the distillation bottle under the driving of the rotary seat, the bottle body of the distillation bottle is positioned in the water bath kettle, and a spiral pipeline is arranged on the distillation bottle along the surface of the bottle body; the distillation bottle is communicated with the cooling bottle through a rotating seat, and a collecting bottle is communicated below the cooling bottle. During rotary evaporation, high-temperature liquid in the water bath kettle enters the pipeline and flows along the bottle body, even if the bottle body of the distillation bottle rotates, the bottle body exposed out of the liquid level is continuously heated by the high-temperature liquid in the pipeline above the liquid level, and the evaporation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to a rotary evaporator. Background Art

[0002] The rotary evaporator is a widely used evaporation instrument, which is often used for sample concentration, drying and extraction in the medical field. It is placed in a water bath and heated while rotating. Since the distillation flask is constantly rotating, it is not necessary to add zeolite and there will be no violent boiling. At the same time, due to the continuous rotation, the liquid adheres to the inner wall of the distillation flask to form a layer of liquid film, which increases the evaporation area, speeds up the evaporation rate, and makes the sample in the distillation flask diffuse and evaporate. However, using a rotary evaporator to heat and evaporate the sample inside the distillation flask easily causes the heat inside the water bath to lose outward, resulting in insufficient use of heat and increased losses. Utility Model Content

[0003] In view of the above-mentioned technical problems, the purpose of the utility model is to provide a rotary evaporator to improve the evaporation efficiency.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A rotary evaporator comprises a heating base, a water bath is arranged on the heating base, a connecting base is arranged on one side of the heating base, a lifting device is arranged on the connecting base, the lifting device comprises a fixed base connected to the connecting base and a lifting platform vertically slidably connected to the fixed base, a rotating base is arranged on the lifting platform, a distillation flask and a cooling bottle are arranged on both sides of the rotating base respectively, the distillation flask rotates around its own central axis under the drive of the rotating base, the body of the distillation flask is located in the water bath, and a spiral pipe is arranged along the surface of the body of the distillation flask; the distillation flask and the cooling bottle are connected through the rotating base, and a collecting bottle is connected below the cooling bottle.

[0006] Preferably, the lifting platform is provided with a cantilever extending outward, the end of the cantilever is provided with a mounting portion, the two ends of the rotating seat are respectively rotatably connected to the lifting platform and the mounting portion, and the mounting portion is provided with an adjusting rod for adjusting the rotation tightness of the rotating seat.

[0007] Preferably, the bottom of the cooling bottle gradually converges downward to form a cone, a bracket is provided on the connecting base, an annular support frame is provided on the bracket, the inner diameter of the support frame is smaller than the diameter of the cooling bottle, the cooling bottle is inserted into the support frame from above and the cone part contacts the support frame.

[0008] Preferably, a soft cushion is provided on the inner side of the support frame.

[0009] Preferably, a placement groove which is sunken into the cooling bottle body is formed on the top of the cooling bottle.

[0010] Preferably, a heat-insulating cover rotatably connected to the water bath is provided on one side of the water bath, and a notch is provided on the heat-insulating cover to avoid the bottleneck of the distillation flask.

[0011] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0012] The utility model discloses a rotary evaporator comprises a heating base, a water bath is arranged on the heating base, a connecting base is arranged on one side of the heating base, a lifting device is arranged on the connecting base, the lifting device comprises a fixed base connected with the connecting base and a lifting platform vertically slidably connected with the fixed base, a rotating base is arranged on the lifting platform, a distillation flask and a cooling flask are arranged on both sides of the rotating base respectively, the distillation flask rotates around its own central axis under the driving of the rotating base, the bottle body of the distillation flask is located in the water bath, a spiral pipe is arranged along the surface of the bottle body of the distillation flask, the distillation flask and the cooling flask are connected through the rotating base, a collecting bottle is connected below the cooling flask, when rotary evaporation is performed, the high-temperature liquid in the water bath enters the pipe and flows along the bottle body, even if the bottle body of the distillation flask rotates above the liquid surface, there is residual high-temperature liquid in the pipe to continuously heat the bottle body exposed to the liquid surface, so as to maintain the temperature around the distillation flask, effectively prolong the high-temperature keeping time of the bottle body of the distillation flask, which is beneficial to the evaporation of the liquid in the bottle, reduces the heat energy loss and improves the evaporation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0014] Attached Figure 1 It is a three-dimensional diagram of the rotary evaporator of the utility model;

[0015] Attached Figure 2 This is a stereoscopic diagram from another perspective of the rotary evaporator of the present invention.

[0016] Among them: 1. Heating base; 2. Water bath; 3. Connecting base; 41. Fixed base; 42. Lifting platform; 5. Rotating base; 6. Distilling flask; 61. Pipeline; 7. Cooling bottle; 71. Placement slot; 8. Collecting bottle; 9. Cantilever; 91. Mounting part; 10. Adjusting rod; 11. Bracket; 12. Support frame; 13. Insulation cover; 131. Notch. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] As attached Figure 1 The utility model rotary evaporator is shown, comprising a heating base 1, a water bath 2 is placed on the heating base 1, a connecting base 3 is provided on one side of the heating base 1, a lifting device is installed on the connecting base 3, and the lifting device comprises a fixed base 41 connected to the connecting base 3 and a lifting platform 42 vertically slidably connected to the fixed base 41. The lifting platform 42 is connected to a rotating base 5, and a distillation bottle 6 and a cooling bottle 7 are respectively installed on both sides of the rotating base 5. The body of the distillation bottle 6 is located in the water bath 2. The distillation bottle 6 rotates around its own central axis under the drive of the rotating base 5, so that the liquid in the distillation bottle 6 forms a layer of liquid film on the inner wall of the bottle body, thereby increasing the evaporation area. The distillation flask 6 has a spiral pipe 61 along the surface of the bottle. When the distillation flask 6 rotates, the high-temperature liquid in the water bath 2 continuously enters or leaves the surface of the bottle. The high-temperature liquid in the water bath enters the pipe 61 and flows along the bottle. Even if the distillation flask 6 rotates above the liquid surface, there is residual high-temperature liquid in the pipe 61 to continuously heat the bottle exposed to the liquid surface, maintain the temperature of the distillation flask 6, and make the liquid in the distillation flask 6 evaporate continuously. There can be one or more pipes 61. The distillation flask 6 and the cooling bottle 7 are connected through the rotating seat 5. The bottleneck of the distillation flask 6 extends obliquely upward. The bottom of the cooling bottle 7 is connected to a collecting bottle 8 to collect the liquefied liquid in the cooling bottle 7.

[0020] The lifting platform 42 is connected with an outwardly extending cantilever 9, and the end of the cantilever 9 has a mounting portion 91. The two ends of the rotating seat 5 are rotatably connected to the lifting platform 42 and the mounting portion 91, respectively, so as to fine-tune the angle of the distillation flask 6. After replacing the distillation flask 6 of different shapes and sizes, it can also be placed in a suitable position in the water bath 2. The mounting portion 91 has an adjusting rod 10 for adjusting the rotation tightness of the rotating seat 5. When the distillation flask 6 is at a suitable angle, tighten the adjusting rod 10 to relatively fix the position of the rotating seat 5 and the lifting platform 42.

[0021] The bottom of the cooling bottle 7 gradually shrinks downward to form a cone, and the connecting base 3 is provided with a bracket 11, and the bracket 11 is connected to a ring-shaped support frame 12, and the inner diameter of the support frame 12 is smaller than the diameter of the cooling bottle 7. The cooling bottle 7 is inserted into the support frame 12 from above and the cone part contacts the support frame 12. Under this structure, even if the rotating seat 5 rotates to make the cooling bottle 7 unable to be in a completely vertical state, the cooling bottle 7 can be firmly leaned and fixed on the support frame 12. The inner side of the support frame 12 is provided with a cushion, so that the placement of the cooling bottle 7 is more stable and reliable.

[0022] The top of the cooling bottle 7 is formed with a placement groove 71 that sinks into the body of the cooling bottle 7. Objects that are easy to cool can be added to the placement groove 71 to quickly liquefy the steam entering the cooling bottle 7. At the same time, the placement groove 71 can also increase the surface area of ​​the cooling bottle 7, further improving the cooling efficiency. In this embodiment, the placement groove 71 is a cylinder, and crushed ice can be added to the placement groove 71, or frozen bottled water can be directly placed in the placement groove 71 to slowly thaw, using a simple and convenient structure and method to help the cooling bottle 7 condense.

[0023] A heat preservation cover 13 rotatably connected to the water bath 2 is installed on one side of the water bath 2. A notch 131 is processed on the heat preservation cover 13 to avoid the bottleneck of the distillation flask 6. During the rotary evaporation process, the heat preservation cover 13 is closed to prevent the high-temperature liquid in the water bath from evaporating in large quantities and causing heat loss.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rotary evaporator, characterized in that: It includes a heating base, a water bath is arranged on the heating base, a connecting base is arranged on one side of the heating base, a lifting device is arranged on the connecting base, the lifting device includes a fixed base connected to the connecting base and a lifting platform vertically slidably connected to the fixed base, a rotating base is arranged on the lifting platform, a distillation flask and a cooling bottle are arranged on both sides of the rotating base respectively, the distillation flask rotates around its own central axis under the drive of the rotating base, the body of the distillation flask is located in the water bath, and a spiral pipe is arranged along the surface of the body of the distillation flask; the distillation flask and the cooling bottle are connected through the rotating base, and a collecting bottle is connected below the cooling bottle.

2. The rotary evaporator according to claim 1, characterized in that: The lifting platform is provided with a cantilever extending outward, the end of the cantilever is provided with a mounting portion, the two ends of the rotating seat are respectively rotatably connected to the lifting platform and the mounting portion, and the mounting portion is provided with an adjusting rod for adjusting the rotation tightness of the rotating seat.

3. The rotary evaporator according to claim 1, characterized in that: The bottom of the cooling bottle gradually converges downward to form a cone, and a bracket is provided on the connecting base. A ring-shaped support frame is provided on the bracket. The inner diameter of the support frame is smaller than the diameter of the cooling bottle. The cooling bottle is inserted into the support frame from above and the cone part contacts the support frame.

4. The rotary evaporator according to claim 3, characterized in that: A soft cushion is arranged on the inner side of the support frame.

5. The rotary evaporator according to claim 1, characterized in that: The top of the cooling bottle is formed with a placement groove which sinks into the cooling bottle body.

6. The rotary evaporator according to claim 1, characterized in that: A heat-insulating cover rotatably connected to the water bath is arranged on one side of the water bath, and a notch is arranged on the heat-insulating cover to avoid the bottleneck of the distillation flask.

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