Evaporating flask mounting device and rotary evaporator
By improving the design of the threaded connection between the bottle-removing locking nut and the bottle-removing device in the evaporator installation device, as well as the motor drive transmission structure, the problems of cumbersome disassembly and uneven heating in traditional devices have been solved, achieving convenient installation, stable flow guidance, and efficient evaporation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI XIANDE EXPERIMENTAL INSTR CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-14
Smart Images

Figure CN224486089U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rotary evaporator technology, and in particular to an evaporator flask mounting device and a rotary evaporator. Background Technology
[0002] A rotary evaporator is a widely used evaporation instrument in laboratories. It consists of a motor, a distillation flask, a heating pan, and a condenser. It is mainly used for the continuous distillation of volatile solvents under reduced pressure and is applied in fields such as chemistry, chemical engineering, and biomedicine.
[0003] Traditional evaporation flask installation devices suffer from problems in chemical experiments, pharmaceuticals, and chemical production, such as cumbersome disassembly and installation of the evaporation flask, and uneven heating of the liquid due to the inability to rotate the evaporation flask effectively during heating. These problems result in low operating efficiency, poor experimental safety, and evaporation effects that fail to meet high-precision requirements. Utility Model Content
[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to provide an evaporator mounting device and a rotary evaporator.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An evaporator mounting device includes an evaporator body, an evaporator flask, and a condenser. It also includes a rotating frame mounted on the evaporator body. The condenser is detachably connected to the rotating frame. A mounting ring is connected to the rotating frame, and a bottle ejector is detachably connected to the outside of the mounting ring. The evaporator flask is mounted on the bottle ejector. A guide tube is installed inside the mounting ring, with its lower end located inside the evaporator flask and its upper end located inside the condenser.
[0007] Preferably, the mounting ring is threaded with a bottle ejection locking nut, and the end of the bottle ejector away from the evaporating bottle is threaded onto the bottle ejection locking nut.
[0008] Preferably, a sealing gasket is provided between the guide tube and the evaporation flask.
[0009] Preferably, the rotating frame is connected to two rotating rings, and a driven gear is provided between the two rotating rings. The driven gear is sleeved on the mounting ring. A motor is fixedly connected inside the rotating frame, and a driving gear is fixedly connected to the output end of the motor. The driving gear and the driven gear are connected through a sprocket.
[0010] Preferably, the rotating frame is detachably connected to an upper connector by bolts. The upper connector is sleeved on the air inlet end of the condenser. A locking nut is threaded onto the upper connector. The locking nut is used to fix and lock the condenser and the upper connector.
[0011] A rotary evaporator includes an evaporator flask mounting device and a heating pot disposed on the evaporator body, the heating pot being located at the lower end of the evaporator flask assembly.
[0012] Compared with the prior art, the present invention provides an evaporation flask mounting device and a rotary evaporator, which have the following advantages:
[0013] The parts of this device not described herein are identical to or can be implemented using existing technologies. This invention achieves convenient disassembly and installation of the evaporating flask through the threaded connection design of the flask-removing locking nut and the flask-removing device, significantly improving experimental efficiency. The auxiliary fixing function of the guide tube by the flask-removing locking nut, combined with the sealing gasket structure, ensures the stability of liquid flow and experimental safety. The motor-driven transmission structure allows the evaporating flask to achieve an adjustable speed, driving uniform liquid flow and significantly improving evaporation efficiency. The combined structure of the upper connector, the locking nut, and the guide tube achieves airtight connection between the condenser and the evaporating flask, improving condensate recovery rate and optimizing the entire evaporation process. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of an evaporator mounting device and a rotary evaporator proposed in this utility model;
[0015] Figure 2 This is a schematic diagram of the structure of an evaporator mounting device and a rotary evaporator ejector proposed in this utility model;
[0016] Figure 3 This is a schematic diagram of the driven gear of an evaporator flask mounting device and a rotary evaporator proposed in this utility model.
[0017] Figure 4 This is a cross-sectional structural diagram of an evaporator mounting device and a rotary evaporator proposed in this utility model.
[0018] Figure 5 This utility model proposes an evaporation flask mounting device and a rotary evaporator. Figure 4 A schematic diagram of the structure of part A.
[0019] In the diagram: 1. Evaporator body; 101. Heating pot; 2. Rotating frame; 201. Driven gear; 202. Driven gear; 203. Rotating ring; 204. Mounting ring; 3. Evaporator flask; 301. Guide tube; 302. Flask ejector; 303. Flask ejector locking nut; 4. Upper connector; 401. Mounting locking nut; 5. Condenser. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] Example 1:
[0023] Reference Figures 1-4 An evaporator flask mounting device includes an evaporator body 1, an evaporator flask 3, and a condenser 5. It also includes a rotating frame 2 mounted on the evaporator body 1. The condenser 5 is detachably connected to the rotating frame 2. A mounting ring 204 is mounted on the rotating frame 2. A bottle ejector 302 is detachably connected to the outside of the mounting ring 204. The evaporator flask 3 is mounted on the bottle ejector 302. A guide tube 301 is installed inside the mounting ring 204. The lower end of the guide tube 301 is located inside the evaporator flask 3, and the upper end of the guide tube 301 is located inside the condenser 5.
[0024] The mounting ring 204 is threaded with a bottle ejection locking nut 303. The end of the bottle ejector 302 away from the evaporator 3 is threaded with the bottle ejection locking nut 303, which facilitates the disassembly and installation of the evaporator 3.
[0025] It should be noted that the bottle-removing locking nut 303 can also provide auxiliary fixation for the guide tube 301 to prevent the guide tube 301 from moving around inside the mounting ring 204.
[0026] A sealing gasket is provided between the guide tube 301 and the evaporation flask 3 to prevent the heated gas from flowing out.
[0027] Two rotating rings 203 are connected to the rotating frame 2. A driven gear 202 is provided between the two rotating rings 203. The driven gear 202 is sleeved on the mounting ring 204. A motor is fixedly connected inside the rotating frame 2. A driving gear 201 is fixedly connected to the output end of the motor. The driving gear 201 and the driven gear 202 are connected through a sprocket.
[0028] When the motor is working, it drives the drive gear 201 to rotate, which in turn drives the driven gear 202 to rotate through the sprocket. The driven gear 202 transmits the rotational power to the mounting ring 204, the bottle ejection locking nut 303, the bottle ejector 302, and the evaporation bottle 3, so that the evaporation bottle 3 can rotate in the heating pot 101, causing the liquid to flow and improving its heating effect.
[0029] The rotating frame 2 is detachably connected to the upper connector 4 by bolts. The upper connector 4 is sleeved on the air inlet end of the condenser 5. The upper connector 4 is threaded with a locking nut 401, which is used to fix and lock the condenser 5 and the upper connector 4.
[0030] The condenser 5 and the evaporator flask 3 can be connected by the upper connector 4, the locking nut 401, and the guide tube 301, which facilitates the condensation of the liquid after heating.
[0031] Example 2:
[0032] Reference Figures 1-4 A rotary evaporator includes an evaporator flask mounting device and a heating pot 101 disposed on the evaporator body 1, the heating pot 101 being located at the lower end of the evaporator flask 3.
[0033] This invention achieves convenient disassembly and installation of the evaporating flask 3 through the threaded connection design between the flask removal locking nut 303 and the flask remover 302, significantly improving experimental efficiency. The auxiliary fixing function of the flask removal locking nut 303 on the guide tube 301, combined with the sealing gasket structure, ensures the stability of liquid flow and experimental safety. The motor-driven transmission structure allows the evaporating flask 3 to achieve adjustable speed, driving uniform liquid flow and significantly improving evaporation efficiency. The combination structure of the upper connector 4, the mounting locking nut 401, and the guide tube 301 achieves airtight connection between the condenser 5 and the evaporating flask 3, improving condensate recovery rate and optimizing the entire evaporation process.
[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An evaporator mounting device, comprising an evaporator body (1), an evaporator flask (3), and a condenser (5), characterized in that, It also includes a rotating frame (2) installed on the evaporator body (1), the condenser (5) is detachably connected to the rotating frame (2), the rotating frame (2) is connected to an installation ring (204), the installation ring (204) is detachably connected to a bottle remover (302), the evaporator bottle (3) is installed on the bottle remover (302), a guide tube (301) is installed inside the installation ring (204), the lower end of the guide tube (301) is located inside the evaporator bottle (3), and the upper end of the guide tube (301) is located inside the condenser (5).
2. The evaporator flask mounting device according to claim 1, characterized in that, The mounting ring (204) is threaded with a bottle ejection locking nut (303), and the end of the bottle ejector (302) away from the evaporating bottle (3) is threaded onto the bottle ejection locking nut (303).
3. The evaporator flask mounting device according to claim 2, characterized in that, A sealing gasket is provided between the guide tube (301) and the evaporation bottle (3).
4. The evaporator flask mounting device according to claim 1, characterized in that, Two rotating rings (203) are connected to the rotating frame (2). A driven gear (202) is provided between the two rotating rings (203). The driven gear (202) is sleeved on the mounting ring (204). A motor is fixedly connected inside the rotating frame (2). A driving gear (201) is fixedly connected to the output end of the motor. The driving gear (201) and the driven gear (202) are connected by a sprocket.
5. The evaporator flask mounting device according to claim 1, characterized in that, The rotating frame (2) is detachably connected to an upper connector (4) by bolts. The upper connector (4) is sleeved on the air inlet end of the condenser (5). The upper connector (4) is threaded with a locking nut (401), which is used to fix and lock the condenser (5) and the upper connector (4).
6. A rotary evaporator, comprising the evaporation flask mounting device as described in claim 5, characterized in that, It also includes a heating pot (101) disposed on the evaporator body (1), the heating pot (101) being located at the lower end of the evaporator flask (3).