Rotary evaporator

Abstract

The utility model relates to the technical field of evaporator equipment, and discloses a rotary evaporator which comprises a rotary evaporator body, a control terminal is arranged on the front face of the rotary evaporator body, a heating pot is fixedly connected to the upper surface of the rotary evaporator body, and a base is fixedly connected to the upper surface of the rotary evaporator body. The front surface of the base is fixedly connected with a rotating sleeve, one end of the rotating sleeve is fixedly connected with a distillation flask, and the other end of the rotating sleeve is fixedly sleeved with a condenser. The evaporator is rotated, a concentrated sample is taken out from the distillation flask and subjected to subsequent analysis or storage, when the water content in the heating kettle is reduced along with continuous heating of the heating kettle, the water level detector detects that the water level drops, and then the electric telescopic rod is opened through the controller; an electric telescopic rod drives a pushing rod to move up and down through a driving plate to supplement water in the warm water tank into the heating pot, and the problem that heating is uneven due to the fact that water in the heating pot is reduced is solved to a certain extent.

Description

Technical Field

[0001] The present application belongs to the technical field of evaporator equipment, and specifically relates to a rotary evaporator. Background Art

[0002] Rotary evaporator, also known as rotary evaporator, is an evaporation instrument widely used in laboratories. It is composed of a motor, a distillation flask, a heating pot, a condenser and other parts. It is mainly used for continuous distillation of volatile solvents under reduced pressure conditions and is used in chemistry, chemical industry, biomedicine and other fields.

[0003] Referring to CN217041350U, a rotary evaporator is provided to solve the problems of the easy damage of the collecting tank during use and the backflow of condensate in the prior art. It includes a rotary evaporator body and a collecting tank installed on the rotary evaporator body. The rotary evaporator further includes: a first connecting tube, one end of which is connected to the bottle mouth of the collecting tank; a second connecting tube, which is sleeved on the outside of the liquid outlet of the condenser tube of the rotary evaporator body and is threadedly connected to the first connecting tube; a plurality of one-way valves, one end of which is annularly distributed on one end of the second connecting tube close to the first connecting tube, and the other end is radially retracted toward the first connecting tube; a tray, the top of which has a lifting groove for lifting the collecting tank; a lifting bracket, which is connected to the bottom of the tray. The utility model prevents the backflow of coolant by setting a one-way valve, adopts a threaded connection to increase the firmness of the connection between the collecting tank and the cooling tube, and sets a tray and a lifting bracket for further support.

[0004] However, the following problem still exists: when the heating pot continuously heats the distillation flask, the internal water will continue to evaporate and the water level will become low, but the equipment cannot replenish water in time, resulting in a smaller area of ​​the distillation flask immersed in the heating pot, which cannot be heated evenly and the heating speed is slowed down. Utility Model Content

[0005] The purpose of the present application is to provide a rotary evaporator to solve the problem that when the heating pot mentioned above continuously heats the distillation flask, the internal water will continue to evaporate, the water level will become low, and the equipment cannot replenish water in time, resulting in a small area of ​​the distillation flask immersed in the heating pot, and the heating cannot be uniformly performed, and the heating speed is slowed down.

[0006] The technical solution adopted in the present application is as follows: a rotary evaporator comprises a rotary evaporator, a control terminal is arranged on the front side of the rotary evaporator, a heating pot is fixedly connected to the upper surface of the rotary evaporator, a base is fixedly connected to the upper surface of the rotary evaporator, a rotating sleeve is slidably connected to the front side of the base, a distillation flask is fixedly connected to one end of the rotating sleeve, a condenser is fixedly sleeved on the other end of the rotating sleeve, a collecting tank is fixedly connected to the bottom end of the condenser, a warm water tank is fixedly connected to the side of the rotary evaporator, a water inlet pipe is fixedly connected to the front side of the warm water tank, a pressure cylinder is fixedly connected to one end of the water inlet pipe away from the warm water tank, a water outlet pipe is fixedly connected to the front side of the pressure cylinder, and an end of the water outlet pipe away from the pressure cylinder is fixedly connected to the surface of the heating pot, a rubber sealing block is slidably connected to the inner wall of the pressure cylinder, and a push rod is fixedly connected to the top end of the rubber sealing block.

[0007] By adopting the above technical scheme, the liquid sample to be concentrated and the solvent mixture are placed in a distillation flask, the rotation speed, heating temperature and vacuum level are set, the distillation flask is placed in a heating pot, the rotary evaporator is started, the rotation speed is controlled, and then the heating pot is turned on through the control terminal, and the required temperature is set. The heating time is determined according to the properties of the sample and the required degree of concentration. When the sample reaches the required degree of concentration, the heating pot and the rotary evaporator are turned off, and the concentrated sample is taken out of the distillation flask for subsequent analysis or storage. As the heating pot is continuously heated, the water content in the heating pot becomes less. At this time, the water level detector detects that the water level has dropped. Then, the controller opens the electric telescopic rod, and the electric telescopic rod drives the push rod to move up and down through the driving plate to replenish the water in the warm water tank into the heating pot, which solves the problem of uneven heating caused by the reduction of water content in the heating pot to a certain extent.

[0008] In a preferred embodiment, the lower surfaces of the rotary evaporator and the warm water tank are fixedly connected with support legs.

[0009] By adopting the above technical solution and providing supporting legs, the rotary evaporator and the warm water tank can be stably supported.

[0010] In a preferred embodiment, a conduit is fixedly connected to the upper surface of the warm water tank, and a pipe plug is sleeved on the inner wall of the conduit.

[0011] By adopting the above technical solution and arranging the pipe plug, when the water in the warm water tank is used up, the conduit can be opened to refill the warm water tank with water for standby use.

[0012] In a preferred embodiment, a mounting plate is fixedly connected to the upper surface of the warm water tank, an electric telescopic rod is fixedly connected to the front of the mounting plate, a driving plate is fixedly connected to the top of the electric telescopic rod, and the driving plate is fixedly connected to the surface of the push rod on the side away from the mounting plate.

[0013] By adopting the above technical solution, an electric telescopic rod is provided, which can drive the driving plate to move during operation, and the movement of the driving plate drives the push rod and the rubber sealing block to move up and down, so as to pump the water in the warm water tank into the heating pot.

[0014] In a preferred embodiment, a water level detector is fixedly connected to the inner wall of the heating pot, a connecting wire is fixedly connected to the top of the water level detector, an end of the connecting wire away from the inner wall of the heating pot is fixedly connected to a controller, and the back of the controller is fixedly connected to the surface of the pressurizing cylinder.

[0015] By adopting the above technical solution and setting a water level detector, the height of the water level in the heating pot can be detected. When the water level is too low, the electric telescopic rod is opened through the controller.

[0016] In a preferred embodiment, a plug plate is sleeved on the inner wall of the pressurizing cylinder, a through hole is opened on the lower surface of the pressurizing cylinder, and the inner wall of the through hole is matched with the lower surface of the plug plate.

[0017] By adopting the above technical solution, a plug plate is set, and a protrusion is set at the bottom end of the plug plate to fit with the inner wall of the through hole. When the rubber sealing block moves up, water lifts the plug plate and enters the pressurized cylinder. When the rubber sealing block descends, the rubber sealing block moves down and the protrusion fits with the inner wall of the through hole to prevent the water in the pressurized cylinder from flowing back into the warm water tank.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0019] 1. In the present application, a liquid sample to be concentrated and a solvent mixture are placed in a distillation flask, and the rotation speed, heating temperature and vacuum level are set. The distillation flask is placed in a heating pot, and the rotary evaporator is started to control the rotation speed. The heating pot is then turned on through a control terminal, and the desired temperature is set. The heating time is determined according to the properties of the sample and the desired degree of concentration. When the sample reaches the desired degree of concentration, the heating pot and the rotary evaporator are turned off, and the concentrated sample is taken out of the distillation flask for subsequent analysis or storage. As the heating pot is continuously heated, the water content in the heating pot becomes less. At this time, a water level detector detects that the water level has dropped. Then, the controller turns on the electric telescopic rod, and the electric telescopic rod drives the push rod to move up and down through the driving plate to replenish the water in the warm water tank into the heating pot, which solves the problem of uneven heating caused by the reduction of water content in the heating pot to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of this application;

[0021] Figure 2 It is a side view structural schematic diagram of this application;

[0022] Figure 3 This is a schematic diagram of the top view of the structure of this application;

[0023] Figure 4 This is a schematic diagram of the explosion structure of the pressurized cylinder of the present application.

[0024] Markings in the figure: 1. Rotary evaporator; 2. Control terminal; 3. Support leg; 4. Heating pot; 5. Plug plate; 6. Warm water tank; 7. Conduit; 8. Pipe plug; 9. Push rod; 10. Driving plate; 11. Rubber sealing block; 12. Connecting line; 13. Distillation flask; 14. Rotating sleeve; 15. Base; 16. Water outlet pipe; 17. Water inlet pipe; 18. Condenser; 19. Collecting tank; 20. Controller; 21. Mounting plate; 22. Electric telescopic rod; 23. Pressurizing cylinder; 24. Water level detector; 25. Through hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Reference Figure 1-4 ,

[0027] Example:

[0028] Reference Figure 2-4 A rotary evaporator comprises a rotary evaporator 1, a control terminal 2 is arranged on the front of the rotary evaporator 1, a heating pot 4 is fixedly connected to the upper surface of the rotary evaporator 1, a base 15 is fixedly connected to the upper surface of the rotary evaporator 1, a rotating sleeve 14 is slidably connected to the front of the base 15, a distillation flask 13 is fixedly connected to one end of the rotary sleeve 14, a condenser 18 is fixedly sleeved on the other end of the rotary sleeve 14, a collecting tank 19 is fixedly connected to the bottom end of the condenser 18, a liquid sample to be concentrated and a solvent mixture are placed in the distillation flask 13, a rotation speed, a heating temperature and a vacuum level are set, the distillation flask 13 is placed in the heating pot 4, the rotary evaporator 1 is started, the rotation speed is controlled, and then the heating pot 4 is turned on by the control terminal 2, and the required temperature is set, the heating time is determined according to the nature of the sample and the required concentration degree, when the sample reaches the required concentration degree, the heating pot 4 is turned off, the rotary evaporator 1 is used, the concentrated sample is taken out from the distillation flask 13, and subsequent analysis or storage is carried out.

[0029] Reference Figure 1-3A warm water tank 6 is fixedly connected to the side of the rotary evaporator 1, a water inlet pipe 17 is fixedly connected to the front of the warm water tank 6, an end of the water inlet pipe 17 away from the warm water tank 6 is fixedly connected to a pressurizing cylinder 23, a water outlet pipe 16 is fixedly connected to the front of the pressurizing cylinder 23, an end of the water outlet pipe 16 away from the pressurizing cylinder 23 is fixedly connected to the surface of the heating pot 4, a rubber sealing block 11 is slidably connected to the inner wall of the pressurizing cylinder 23, and a push rod 9 is fixedly connected to the top of the rubber sealing block 11. When the heating pot 4 is continuously heated, the water in the heating pot becomes less. At this time, the water level detector 24 detects that the water level has dropped, and then the controller 20 is used to open the electric telescopic rod 22. The electric telescopic rod 22 drives the push rod 9 to move up and down through the driving plate 10 to replenish the water in the warm water tank 6 into the heating pot 4.

[0030] Reference Figure 2-3 The lower surfaces of the rotary evaporator 1 and the warm water tank 6 are fixedly connected with support legs 3. By providing the support legs 3, the rotary evaporator 1 and the warm water tank 6 can be stably supported.

[0031] Reference Figure 1-3 A conduit 7 is fixedly connected to the upper surface of the warm water tank 6, and a pipe plug 8 is sleeved on the inner wall of the conduit 7. By setting the pipe plug 8, the conduit 7 can be opened when the water in the warm water tank 6 is used up, and water can be refilled into the warm water tank 6 for standby use.

[0032] Reference Figure 2-4 The upper surface of the warm water tank 6 is fixedly connected with a mounting plate 21, the front of the mounting plate 21 is fixedly connected with an electric telescopic rod 22, the top of the electric telescopic rod 22 is fixedly connected with a driving plate 10, and the side of the driving plate 10 away from the mounting plate 21 is fixedly connected to the surface of the pushing rod 9. By setting the electric telescopic rod 22, the driving plate 10 can be driven to move during operation, and the movement of the driving plate 10 drives the pushing rod 9 and the rubber sealing block 11 to move up and down, thereby pumping the water in the warm water tank 6 into the heating pot 4.

[0033] Reference Figure 1-3 A water level detector 24 is fixedly connected to the inner wall of the heating pot 4, a connecting line 12 is fixedly connected to the top of the water level detector 24, an end of the connecting line 12 away from the inner wall of the heating pot 4 is fixedly connected to the controller 20, and the back of the controller 20 is fixedly connected to the surface of the pressurizing cylinder 23. By setting the water level detector 24, the height of the water level in the heating pot 4 can be detected. When the water level is too low, the electric telescopic rod 22 is opened through the controller 20.

[0034] Reference Figure 1-3The inner wall of the pressurizing cylinder 23 is sleeved with a plug plate 5, and a through hole 25 is opened on the lower surface of the pressurizing cylinder 23. The inner wall of the through hole 25 is matched with the lower surface of the plug plate 5. By setting the plug plate 5, a protrusion is provided at the bottom end of the plug plate 5 to fit with the inner wall of the through hole 25. When the rubber sealing block 11 moves up, water lifts the plug plate 5 and enters the pressurizing cylinder 23. When the rubber sealing block 11 descends, the rubber sealing block 11 moves down and the protrusion fits on the inner wall of the through hole 25 to prevent the water in the pressurizing cylinder 23 from flowing back into the warm water tank 6.

[0035] The implementation principle of an embodiment of a rotary evaporator 1 of the present application is as follows: a liquid sample to be concentrated and a solvent mixture are placed in a distillation flask 13, a rotation speed, a heating temperature and a vacuum level are set, the distillation flask 13 is placed in a heating pot 4, the rotary evaporator 1 is started, the rotation speed is controlled, and then the heating pot 4 is turned on through the control terminal 2, and the required temperature is set. The heating time is determined according to the properties of the sample and the required degree of concentration. When the sample reaches the required degree of concentration, the heating pot 4 is turned off, the rotary evaporator 1 is used, and the concentrated sample is taken out of the distillation flask 13 for subsequent analysis or storage. As the heating pot 4 is continuously heated, the water content in the heating pot becomes less. At this time, the water level detector 24 detects that the water level has dropped. Then, the controller 20 is used to open the electric telescopic rod 22. The electric telescopic rod 22 drives the driving plate 10 to drive the push rod 9 to move up and down to replenish the water in the warm water tank 6 into the heating pot 4, which to a certain extent solves the problem of uneven heating caused by the reduction of water content in the heating pot 4.

[0036] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotary evaporator, comprising a rotary evaporator (1), a control terminal (2) being arranged on the front of the rotary evaporator (1), a heating pot (4) being fixedly connected to the upper surface of the rotary evaporator (1), a base (15) being fixedly connected to the upper surface of the rotary evaporator (1), a rotary sleeve (14) being slidably connected to the front of the base (15), a distillation flask (13) being fixedly connected to one end of the rotary sleeve (14), a condenser (18) being fixedly sleeved on the other end of the rotary sleeve (14), a collecting tank (19) being fixedly connected to the bottom end of the condenser (18), characterized in that: The side of the rotary evaporator (1) is fixedly connected to a warm water tank (6), the front of the warm water tank (6) is fixedly connected to a water inlet pipe (17), the end of the water inlet pipe (17) away from the warm water tank (6) is fixedly connected to a pressurizing cylinder (23), the front of the pressurizing cylinder (23) is fixedly connected to a water outlet pipe (16), the end of the water outlet pipe (16) away from the pressurizing cylinder (23) is fixedly connected to the surface of the heating pot (4), the inner wall of the pressurizing cylinder (23) is slidably connected to a rubber sealing block (11), and the top of the rubber sealing block (11) is fixedly connected to a push rod (9).

2. A rotary evaporator as claimed in claim 1, characterized in that: The lower surfaces of the rotary evaporator (1) and the warm water tank (6) are both fixedly connected with support legs (3).

3. A rotary evaporator (1) according to claim 1, characterized in that: A conduit (7) is fixedly connected to the upper surface of the warm water tank (6), and a pipe plug (8) is sleeved on the inner wall of the conduit (7).

4. A rotary evaporator as claimed in claim 1, characterized in that: The upper surface of the warm water tank (6) is fixedly connected to a mounting plate (21), the front surface of the mounting plate (21) is fixedly connected to an electric telescopic rod (22), the top end of the electric telescopic rod (22) is fixedly connected to a driving plate (10), and the side of the driving plate (10) away from the mounting plate (21) is fixedly connected to the surface of the push rod (9).

5. A rotary evaporator as claimed in claim 1, characterized in that: The inner wall of the heating pot (4) is fixedly connected to a water level detector (24), the top of the water level detector (24) is fixedly connected to a connecting wire (12), the end of the connecting wire (12) away from the inner wall of the heating pot (4) is fixedly connected to a controller (20), and the back side of the controller (20) is fixedly connected to the surface of the pressurizing cylinder (23).

6. A rotary evaporator as claimed in claim 1, characterized in that: The inner wall of the pressurizing cylinder (23) is sleeved with a plug plate (5), and the lower surface of the pressurizing cylinder (23) is provided with a through hole (25), and the inner wall of the through hole (25) is adapted to the lower surface of the plug plate (5).

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