Rotary evaporator

Abstract

The utility model relates to the technical field of rotary evaporators, and discloses a rotary evaporator which comprises an evaporator body, a condenser is mounted on the side wall of one end of the evaporator body in a communicated manner, a finished product flask is mounted at the bottom end of the condenser in a communicated manner, and an evaporation flask is mounted on the side wall of the other end of the evaporator body in a communicated manner; when the water level in the heating pot is reduced to a threshold value, the floating ball descends, the rotating rod and the rotating ring rotate, so that the top ball jacks up the blocking ball at the bottom end of the water storage tank, water in the water storage tank leaks out through the gap between the blocking ball and the bottom and enters the heating pot through the water conveying tank, water is added into the heating pot, and the water supply efficiency is improved. The water level reaches the needed height, then the top ball is reset, the blocking ball is reset due to the gravity effect, water flow is prevented from flowing out continuously, the operation of automatically adding water into the heating pot is achieved through the procedures, the dry burning prevention effect of the heating pot is achieved, and the practical performance and the safety performance of the device are improved.

Description

Technical Field

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

[0002] The rotary evaporator is a commonly used evaporation instrument in the laboratory. It is mainly used for continuous distillation of volatile solvents under reduced pressure. It consists of a motor, a distillation flask, a heating pot, a condenser and other parts. The core components of the rotary evaporator are the distillation flask and the heating pot. The working principle of the rotary evaporator is to use the heat exchange and evaporation between the liquid film inside the high-speed rotating cylinder and the outside world, so as to volatilize the solution and solvent in the liquid. In the rotary evaporator, the distillation flask rotates at a high speed, so that the solution forms a thin film inside the bottle, and heat exchanges with the heat in the heating pot to evaporate the solvent in the solution. The rotary evaporator is widely used in the fields of chemistry, chemical industry, biomedicine, etc. Its advantages include continuous distillation, large processing capacity, and low solvent consumption. In addition, the rotary evaporator is also easy to operate, easy to control, safe and reliable.

[0003] The existing Chinese patent with announcement number CN218553158U discloses a rotary evaporator, including an electric heating pot, wherein the electric heating pot is filled with continuously heated liquid water, wherein the electric heating pot is provided with a continuously rotating distillation flask, wherein a tube 1 is clamped and installed at the port of the distillation flask, wherein a tube 2 is connected to the outer contour of the tube 1 for reciprocating rotation, wherein an end of the tube 2 away from the distillation flask is penetrated and fixedly connected with a collecting shell, wherein a driving device 1 for reciprocating rotation of the tube 1 is provided in the tube 2, wherein the driving device 1 includes an annular oblique groove provided on the inner wall of the tube 1. The utility model, through the coordinated use of the above structures, solves the problem that in actual use, since the distillation flask in the traditional rotary evaporator is mostly accelerated to improve the efficiency of evaporation transfer, the excessively fast rotation speed easily makes it difficult for the liquid to quickly and comprehensively adhere to the inner wall of the distillation flask, thereby making it difficult to continue to improve the subsequent evaporation efficiency, which brings inconvenience to use.

[0004] However, the above device has the following disadvantages: when the water in the electric heating pot of the rotary evaporator is heated and evaporated for a long time, the heating pot cannot be automatically replenished with water. When the water in the heating pot evaporates too much and the operator does not add water in time, it will affect the experimental process. When the water in the heating pot evaporates completely, the heating pot may be dry-burned and damaged. Therefore, the practicability and safety of the above device are not good.

[0005] Therefore, it is necessary to provide a rotary evaporator to solve the above-mentioned technical problems. Utility Model Content

[0006] The utility model aims to provide a rotary evaporator which adopts a top ball, a blocking ball and a water storage tank and has the effect of automatically adding water to a heating pot to prevent dry burning.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: a rotary evaporator, comprising an evaporator body, a condenser is connected to the side wall of one end of the evaporator body, a finished product flask is connected to the bottom of the condenser, an evaporation flask is connected to the side wall of the other end of the evaporator body, a heating pot is arranged at the bottom of the evaporation flask, a heating module is fixedly installed at the bottom of the heating pot, a support column is arranged on one side of the heating pot, a water storage tank is fixedly installed at the top of the support column, a sealing ball is arranged at the top of the water storage tank, and the A support frame is fixedly installed on the side wall of the water tank, and a rotating rod is rotatably connected to the inner wall of the support frame, and a rotating ring is fixedly installed on the side wall of the rotating rod. The side walls at both ends of the rotating ring are fixedly connected to connecting rods, one end of one of the connecting rods is rotatably connected to a first rotating shaft, and a floating ball is fixedly installed on the bottom end of the first rotating shaft, and one end of the other connecting rod is fixedly connected to a support plate, and the inner wall of the support plate is rotatably connected to a second rotating shaft, and a top ball is fixedly connected to the side wall of the second rotating shaft, and a water delivery trough is arranged directly below the top ball, and the water delivery trough is connected to the heating pot.

[0008] By adopting the above technical scheme, the liquid to be distilled is placed inside the evaporating flask, and the rotary evaporator is started to rotate the evaporating flask. The water inside the heating pot is heated by the heating module, and the rotating evaporating flask is heated in a water bath. The heated steam is condensed by the condenser and enters the interior of the finished flask. When the water level inside the heating pot is reduced to a threshold value, the float will drop, and the rotating rod and the rotating ring will rotate, so that the top ball will push up the sealing ball at the bottom of the water storage tank, and the water inside the water storage tank will leak out through the gap between the sealing ball and the bottom, and enter the heating pot through the water supply trough. Water is added to the inside of the heating pot to make the water level reach the required height, and then the top ball is reset. The sealing ball is reset due to gravity to prevent water from continuing to flow out. The above process realizes the operation of automatically adding water to the heating pot, achieves the effect of preventing the heating pot from dry burning, and increases the practicality and safety performance of the device.

[0009] The utility model is further configured as follows: a preheating module is fixedly installed at the bottom end of the water delivery trough.

[0010] By adopting the above technical solution, the preheating module can preliminarily heat the water inside the water tank. The preheated water can quickly reach the temperature required for evaporation when entering the heating pot, thereby increasing the practical performance and working efficiency of the device.

[0011] The utility model is further configured as follows: sealing rings are fixedly mounted on both end side walls of the evaporator body, one of the sealing rings is arranged between the evaporator body and the condenser, and the other sealing ring is arranged between the evaporator body and the evaporation flask.

[0012] By adopting the above technical solution, the provision of the sealing ring can increase the overall sealing performance of the device.

[0013] The utility model is further configured as follows: a liquid level sensor is fixedly installed on the side wall of the heating pot, and the liquid level sensor is electrically connected to the heating module through a PLC sensor.

[0014] By adopting the above technical solution, the liquid level sensor can monitor the water level inside the heating pot. When the water level drops to a certain height, the water storage tank no longer continues to supply water. At this time, the heating module automatically shuts down to prevent dry burning, thereby increasing the safety and practical performance of the device.

[0015] The utility model is further configured as follows: a heat preservation tank is arranged at the bottom end of the finished product flask.

[0016] By adopting the above technical solution, the main function of the insulation tank is to keep the finished flask cold, prevent the residual heat of the heating pot from interfering with the finished flask, and make the solution inside the finished flask evaporate again, thereby increasing the practical performance of the device.

[0017] The utility model is further configured as follows: a heat preservation layer is provided on the side wall of the heating pot.

[0018] By adopting the above technical solution, the function of the heat insulation layer is to prevent the heat loss inside the heating pot, thereby increasing the practical performance of the device and reducing the power consumption of the device.

[0019] In summary, the utility model has the following beneficial effects: liquid to be distilled is placed inside the evaporating flask of the utility model, and the rotary evaporator is started to rotate the evaporating flask, and the water inside the heating pot is heated by the heating module, and the rotating evaporating flask is heated in a water bath, and the heated steam is condensed by the condenser and enters the interior of the finished flask, and when the water level inside the heating pot is reduced to a threshold value, the float will drop, and the rotating rod and the rotating ring will rotate, so that the top ball will push up the sealing ball at the bottom of the water storage tank, and the water inside the water storage tank will leak out through the gap between the sealing ball and the bottom, and enter the heating pot through the water supply trough, and water is added to the inside of the heating pot to make the water level reach the required height, and then the top ball is reset, and the sealing ball is reset due to the action of gravity to prevent water from continuing to flow out. The above process realizes the operation of automatically adding water to the heating pot, achieves the effect of preventing the heating pot from dry burning, and increases the practicality and safety performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the floating ball, rotating ring, water storage tank and connecting rod of the utility model;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the evaporator body, evaporation flask and condenser of the utility model;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the floating ball, rotating rod and rotating ring of the utility model;

[0024] Figure 5 It is a side view structural schematic diagram of the utility model;

[0025] Figure 6 The utility model is a schematic diagram of the cross-sectional structure of a heating pot in which a heat-insulating layer is arranged on the side wall.

[0026] In the figure: 1. Evaporator body; 2. Evaporating flask; 3. Condenser; 4. Finished product flask; 5. Insulation tank; 6. Sealing ring; 7. Heating pot; 8. Heating module; 9. Liquid level sensor; 10. Support column; 11. Water storage tank; 12. Sealing ball; 13. Water delivery trough; 14. Preheating module; 15. Support frame; 16. Rotating rod; 17. Rotating ring; 18. Connecting rod; 19. First rotating shaft; 20. Floating ball; 21. Support plate; 22. Second rotating shaft; 23. Top ball; 24. Insulation layer. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] See also Figures 1 to 6In an embodiment of the utility model, a rotary evaporator comprises an evaporator body 1, a condenser 3 is connected to a side wall of one end of the evaporator body 1, a finished product flask 4 is connected to a bottom end of the condenser 3, an evaporation flask 2 is connected to a side wall of the other end of the evaporator body 1, a heating pot 7 is arranged at the bottom end of the evaporation flask 2, a heating module 8 is fixedly installed at the bottom end of the heating pot 7, a support column 10 is arranged on one side of the heating pot 7, a water storage tank 11 is fixedly installed at the top end of the support column 10, and a water storage tank 11 is fixedly installed at the top end of the water storage tank 11. A blocking ball 12 is provided, a support frame 15 is fixedly installed on the side wall of the water storage tank 11, a rotating rod 16 is rotatably connected to the inner wall of the support frame 15, a rotating ring 17 is fixedly installed on the side wall of the rotating rod 16, connecting rods 18 are fixedly connected to the side walls of both ends of the rotating ring 17, one end of one of the connecting rods 18 is rotatably connected to a first rotating shaft 19, a floating ball 20 is fixedly installed on the bottom end of the first rotating shaft 19, and one end of the other connecting rod 18 is fixedly connected to a support plate 21, and the inner wall of the support plate 21 is rotatably connected to a second rotating shaft 22, a top ball 23 is fixedly connected to the side wall of the second rotating shaft 22, and a water delivery trough 13 is arranged directly below the top ball 23, and the water delivery trough 13 is connected to the heating pot 7; the liquid to be distilled is placed in the evaporating flask 2, and the rotary evaporator is started to rotate the evaporating flask 2, and the water in the heating pot 7 is heated by the heating module 8, and the rotating evaporating flask 2 is heated by a water bath, and the heated steam is condensed by the condenser 3 and enters the interior of the finished product flask 4. When the water level in the heating pot 7 is reduced to a threshold value, the float 20 will drop, and the rotating rod 16 and the rotating ring 17 rotate, so that the top ball 23 pushes up the blocking ball 12 at the bottom of the water storage tank 11, and the water inside the water storage tank 11 will leak out through the gap between the blocking ball 12 and the bottom, and enter the heating pot 7 through the water delivery groove 13, and water is added to the heating pot 7 to make the water level reach the required height, and then the top ball 23 is reset, and the blocking ball 12 is reset due to the action of gravity to prevent the water from continuing to flow out. The above process realizes the operation of automatically adding water to the heating pot 7, achieves the effect of preventing the heating pot 7 from dry burning, and increases the practicality and safety performance of the device.

[0029] In this embodiment, preferably, a preheating module 14 is fixedly installed at the bottom end of the water trough 13; the preheating module 14 can preliminarily heat the water inside the water trough 13, and the preheated water can quickly reach the temperature required for evaporation when entering the heating pot 7, thereby increasing the practical performance and working efficiency of the device.

[0030] In this embodiment, preferably, sealing rings 6 are fixedly installed on the side walls at both ends of the evaporator body 1, one of the sealing rings 6 is arranged between the evaporator body 1 and the condenser 3, and the other sealing ring 6 is arranged between the evaporator body 1 and the evaporating flask 2; the setting of the sealing ring 6 can increase the overall sealing performance of the device.

[0031] In this embodiment, preferably, a liquid level sensor 9 is fixedly installed on the side wall of the heating pot 7, and the liquid level sensor 9 is electrically connected to the heating module 8 through a PLC sensor; the liquid level sensor 9 can monitor the water level inside the heating pot 7. When the water level drops to a certain height, the water storage tank 11 no longer continues to supply water. At this time, the heating module 8 is automatically shut down to prevent dry burning, thereby increasing the safety and practical performance of the device.

[0032] In this embodiment, preferably, a heat preservation tank 5 is provided at the bottom end of the finished product flask 4; the main function of the heat preservation tank 5 is to keep the finished product flask 4 cold, prevent the residual heat of the heating pot 7 from interfering with the finished product flask 4, and make the solution inside the finished product flask 4 evaporate again, thereby increasing the practical performance of the device.

[0033] In this embodiment, preferably, the side wall of the heating pot 7 is provided with a heat-insulating layer 24; the function of the heat-insulating layer 24 is to prevent the heat loss inside the heating pot 7, thereby increasing the practical performance of the device and reducing the power consumption of the device.

[0034] Working principle: the liquid to be distilled is placed inside the evaporating flask 2, and the rotary evaporator is started to rotate the evaporating flask 2. The water inside the heating pot 7 is heated by the heating module 8, and the rotating evaporating flask 2 is heated in a water bath. The heated steam is condensed by the condenser 3 and enters the interior of the finished product flask 4. When the water level inside the heating pot 7 is reduced to a threshold value, the float 20 will drop, and the rotating rod 16 and the rotating ring 17 will rotate, so that the top ball 23 will push up the sealing ball 12 at the bottom of the water storage tank 11, and the water inside the water storage tank 11 will leak out through the gap between the sealing ball 12 and the bottom, and enter the heating pot 7 through the water supply trough 13. Water is added to the heating pot 7 to make the water level reach the required height, and then the top ball 23 is reset, and the sealing ball 12 is reset due to gravity to prevent water from continuing to flow out. The above process realizes the operation of automatically adding water to the heating pot 7, achieves the effect of preventing the heating pot 7 from dry burning, and increases the practicality and safety performance of the device.

[0035] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A rotary evaporator, comprising an evaporator body (1), characterized in that: A condenser (3) is connected and installed on the side wall of one end of the evaporator body (1), and a finished product flask (4) is connected and installed on the bottom end of the condenser (3). An evaporating flask (2) is connected and installed on the side wall of the other end of the evaporator body (1). A heating pot (7) is provided at the bottom end of the evaporating flask (2). A heating module (8) is fixedly installed at the bottom end of the heating pot (7). A support column (10) is provided on one side of the heating pot (7). A water storage tank (11) is fixedly installed on the top end of the support column (10). A sealing ball (12) is provided on the top end of the water storage tank (11). A support frame (15) is fixedly installed on the side wall of the water storage tank (11). The inner wall of the support frame (15) is rotatably connected to the inner wall of the support frame (15). A rotating rod (16) is provided, a rotating ring (17) is fixedly mounted on the side wall of the rotating rod (16), and connecting rods (18) are fixedly connected to the side walls at both ends of the rotating ring (17), one end of one of the connecting rods (18) is rotatably connected to a first rotating shaft (19), a floating ball (20) is fixedly mounted on the bottom end of the first rotating shaft (19), and one end of the other connecting rod (18) is fixedly connected to a supporting plate (21), the inner wall of the supporting plate (21) is rotatably connected to a second rotating shaft (22), a top ball (23) is fixedly connected to the side wall of the second rotating shaft (22), and a water delivery trough (13) is arranged directly below the top ball (23), and the water delivery trough (13) is connected to the heating pot (7).

2. A rotary evaporator according to claim 1, characterized in that: A preheating module (14) is fixedly mounted on the bottom end of the water delivery trough (13).

3. A rotary evaporator according to claim 1, characterized in that: Sealing rings (6) are fixedly mounted on the side walls at both ends of the evaporator body (1), one of the sealing rings (6) is arranged between the evaporator body (1) and the condenser (3), and the other sealing ring (6) is arranged between the evaporator body (1) and the evaporation flask (2).

4. A rotary evaporator according to claim 1, characterized in that: A liquid level sensor (9) is fixedly mounted on the side wall of the heating pot (7), and the liquid level sensor (9) is electrically connected to the heating module (8) via a PLC sensor.

5. A rotary evaporator according to claim 1, characterized in that: The bottom end of the finished product flask (4) is provided with a heat preservation tank (5).

6. A rotary evaporator according to claim 1, characterized in that: The side wall of the heating pot (7) is provided with a heat-insulating layer (24).

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