Efficient anti-explosion-boiling rotary evaporator device and use method thereof

Abstract

The invention relates to the technical field of evaporators, in particular to a high-efficiency anti-explosion-boiling rotary evaporator device and a using method thereof.The high-efficiency anti-explosion-boiling rotary evaporator device comprises a base, an evaporator mechanism is arranged on the base and used for solvent evaporation, and the evaporator mechanism comprises a main body assembly and an auxiliary body assembly; the upper end of the condenser is fixedly communicated with an upper connector and used for being connected with a vacuum pump, the lower end of the condenser is fixedly communicated with a lower connector, a recycling bottle is installed at the lower end of the lower connector, a condensation pipe is arranged in the condenser and used for forming cooling medium circulation, and the left end and the right end of the condenser are fixedly communicated with a left connector and a right connector respectively. A thin pipe is fixed in the left connecting port in a penetrating manner; foam formation is actively inhibited through directional airflow, and efficient anti-explosion boiling is achieved; a dynamic balance system is adopted to accurately control the vacuum degree, and evaporation stability is ensured; the innovative sealing and fixing design simplifies the operation and ensures the air tightness, and the experiment safety and the operation efficiency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of evaporator technology, specifically to a high-efficiency anti-boiling rotary evaporator device and its usage method. Background Technology

[0002] A rotary evaporator, also known as a rotary distillation apparatus, is a widely used evaporation instrument in laboratories. It can be used to recover and evaporate organic solvents. It uses a motor to drive the distillation flask to rotate. Because the distillation apparatus is constantly rotating, boiling stones can be avoided and bumping will not occur. At the same time, due to the continuous rotation, the liquid adheres to the wall of the distillation apparatus, forming a liquid film, which increases the evaporation area and speeds up the evaporation rate.

[0003] According to CN222304787U, a rotary evaporator is disclosed. This technology discloses a technical solution including "a rotary evaporator, comprising a control terminal on the front of the rotary evaporator, a heating pot fixedly connected to the upper surface of the rotary evaporator, a base fixedly connected to the upper surface of the rotary evaporator, a rotating sleeve fixedly connected to the front of the base, a distillation flask fixedly connected to one end of the rotating sleeve, and a condenser fixedly fitted to the other end of the rotating sleeve". It has the technical effect of "taking out the concentrated sample from the distillation flask for subsequent analysis or storage. As the heating pot is continuously heated, the water in the heating pot decreases. At this time, the water level detector detects the drop in water level. Then, through the controller, the electric telescopic rod is opened. The electric telescopic rod drives the push rod to move up and down through the drive 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 in the heating pot to a certain extent".

[0004] Existing rotary evaporators are prone to boiling over during operation, especially when processing solutions that are prone to foaming or contain surfactants. Traditional methods to prevent boiling over by adjusting the vacuum or temperature have limited effectiveness and can affect evaporation efficiency. Furthermore, it is difficult to maintain a stable system vacuum. Due to the lack of an effective dynamic balance mechanism, pressure fluctuations can lead to unstable evaporation efficiency and may even trigger sudden boiling over, affecting the reliability of experimental results. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-efficiency anti-boiling rotary evaporator device and its usage method. It actively suppresses foam formation through directional airflow to achieve high-efficiency anti-boiling; it employs a dynamic balance system to precisely control the vacuum level to ensure evaporation stability; and its innovative sealing and fixing design simplifies operation and ensures airtightness, significantly improving experimental safety and operational efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency anti-boiling rotary evaporator device and its usage method, comprising a base, wherein an evaporator mechanism is mounted on the base for solvent evaporation, and the evaporator mechanism includes:

[0007] The main component includes a condenser mounted on a base. The upper end of the condenser is connected to and fixed with an upper connection port for connecting to a vacuum pump. The lower end of the condenser is connected to and fixed with a lower connection port, and a recovery bottle is installed at the lower end of the lower connection port. A condenser tube is installed inside the condenser to form a cooling medium circulation. The left and right ends of the condenser are connected to and fixed with a left connection port and a right connection port, respectively. A thin tube is fixed through the left connection port. An evaporation flask is mounted on one side of the main component. A constant temperature water bath is mounted on the top right side of the base.

[0008] A rotating assembly, mounted on the main assembly, is used to control the rotation of the evaporation flask.

[0009] A fixing component is mounted on the rotating component and is used to fix the evaporation flask.

[0010] Preferably, the fixing component includes a mounting base disposed on the rotating component, a fixing head installed inside the mounting base, a sealing head fixed inside the fixing head and inserted into the mouth of the evaporation flask, a clamping sleeve installed inside the mounting base and fitted onto the fixing head, and a mounting cover threaded onto the outer wall of the mounting base.

[0011] Preferably, the rotating assembly includes an outer tube fixed to the lower end of the right connector, an inner tube rotatably mounted on the lower end of the outer tube, a mounting seat fixed to the lower end of the inner tube, a driven gear fixed to the outer wall of the inner tube, a housing fixed to the outer wall of the outer tube, a reduction motor installed inside the housing, and a drive gear fixed to the output end of the reduction motor and meshing with the driven gear for transmission.

[0012] Preferably, the main component further includes a three-way valve fixed to the upper end of the left connection port, and a gas flow control valve is fixed to the other end of the three-way valve.

[0013] Preferably, the condenser tube includes a spiral tube disposed inside the condenser, with an upper connector and a lower connector fixed at both ends of the spiral tube, and a refrigeration circulating water tank is connected between the upper connector and the lower connector.

[0014] Preferably, the lower end of the thin tube extends into the interior of the evaporation flask to blow onto the surface of the liquid inside the evaporation flask and puncture the foam to prevent boiling over.

[0015] Preferably, the evaporator mechanism further includes a lifting frame fixed to the top left side of the base, and the slider of the lifting frame is fixed with a clamp for fixing the condenser.

[0016] Preferably, the gas flow control valve works in conjunction with the vacuum pump connected to the upper connection port to achieve dynamic balance between the gas inlet speed and the pumping speed, thereby maintaining a stable vacuum level.

[0017] This invention discloses a method for using a high-efficiency anti-boiling rotary evaporator, specifically including the following steps:

[0018] S1. First, fix the evaporation flask on the fixed assembly and immerse it in the constant temperature water bath. Then, start the rotating assembly to control the rotation of the evaporation flask fixed on the fixed assembly, start the constant temperature water bath to heat the temperature, start the circulating condensate tank for cooling, and start the vacuum pump to establish the initial vacuum.

[0019] S2, then, adjust the gas flow control valve to control the gas entry, the gas enters the evaporation flask through the thin tube, and the thin tube guides the airflow to the liquid surface in the evaporation flask to continuously suppress foam formation;

[0020] S3. Finally, the solvent in the evaporation flask vaporizes upon heating, forming vapor that enters the condenser. The vapor circulates within the condenser tubes via a cooling medium supplied by the refrigeration water tank, causing the solvent vapor to liquefy upon contact with the surface of the condenser tubes and fall into a recovery bottle through the lower connection port for collection.

[0021] This invention provides a high-efficiency anti-boiling rotary evaporator device and its usage method. Compared with the prior art, it has the following advantages:

[0022] 1. By directly guiding the airflow to the liquid surface inside the evaporation flask, foam formation is physically disrupted. The lower end of the thin tube extends to near the liquid surface, and the directional airflow impacts the liquid surface, breaking the foam in its initial stage, effectively blocking the process of foam aggregation and growth. Compared with traditional methods of preventing boiling over by adjusting vacuum or temperature, this active anti-boiling mechanism can fundamentally eliminate the risk of boiling over while maintaining optimal evaporation conditions. It is suitable for easily foaming systems or solutions containing surfactants, significantly improving the safety and reliability of experiments and avoiding sample loss or equipment contamination caused by boiling over.

[0023] 2. The design employs a gas flow control valve and a vacuum pump working in tandem to achieve dynamic balance between gas inlet speed and pumping speed. By adjusting the inlet and pumping rates in real time, the system can precisely maintain a stable vacuum level, ensuring a consistent evaporation environment. This not only solves the problem of unstable evaporation efficiency caused by pressure fluctuations in traditional rotary evaporators but also avoids the risk of explosive boiling caused by sudden changes in vacuum level. The dynamic balance system, through closed-loop feedback control, automatically adapts to the evaporation requirements of different solvents, significantly improving the applicability and ease of operation of the device, making it particularly suitable for processing samples sensitive to vacuum levels.

[0024] 3. When the evaporator needs to be installed on the fixing assembly, the bottle mouth of the evaporator is passed through the mounting cover and inserted into the fixing head. At the same time, the sealing head is inserted into the bottle mouth. Then, the mounting cover is rotated and tightened, which pushes the clamping sleeve to squeeze the fixing head. The fixing head is compressed and then contracts, thereby clamping the bottle mouth of the evaporator and sealing and fixing the evaporator. This not only ensures the airtightness requirements of the evaporation process, but also simplifies the operation process, makes bottle replacement more convenient, and avoids leakage problems that may be caused by traditional fixing methods. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a cross-sectional view of the present invention;

[0027] Figure 3 This is a cross-sectional view of the rotating component and the fixed component in this invention;

[0028] Figure 4 This is a split cross-sectional view of the fixing component in this invention;

[0029] Figure 5 This is a cross-sectional view of the main component in this invention.

[0030] In the diagram: 1. Base; 2. Evaporator mechanism; 21. Main component; 211. Condenser; 212. Upper connection port; 213. Lower connection port; 214. Condenser tube; 2141. Spiral tube; 2142. Upper connector; 2143. Lower connector; 215. Left connection port; 216. Right connection port; 217. Thin tube; 218. Three-way valve; 219. Gas flow control valve; 22. Rotating component; 221. Outer tube; 222. Inner tube; 223. Driven gear; 224. Outer shell; 225. Gear motor; 226. Drive gear; 23. Fixing component; 231. Mounting base; 232. Fixing head; 233. Sealing head; 234. Clamping sleeve; 235. Mounting cover; 24. Evaporation flask; 25. Recovery bottle; 26. Constant temperature water bath; 27. Lifting frame; 28. Clamp. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1 - Figure 5This invention provides a technical solution: a high-efficiency anti-boiling rotary evaporator device and its usage method, comprising a base 1, an evaporator mechanism 2 disposed on the base 1 and used for:

[0033] The main component 21 includes a condenser 211 mounted on the base 1. The upper end of the condenser 211 is connected to and fixed with an upper connection port 212 for connecting to a vacuum pump. The lower end of the condenser 211 is connected to and fixed with a lower connection port 213, and a recovery bottle 25 is installed at the lower end of the lower connection port 213. A condenser tube 214 is installed inside the condenser 211 for forming a cooling medium circulation. The left and right ends of the condenser 211 are respectively connected to and fixed with a left connection port 215 and a right connection port 216, and a thin tube 217 is fixed through the left connection port 215. An evaporation bottle 24 is mounted on one side of the main component 21, and a constant temperature water bath 26 is mounted on the top right side of the base 1.

[0034] Rotating component 22 is disposed on main component 21 and is used to control the rotation of evaporation flask 24;

[0035] The fixing component 23 is disposed on the rotating component 22 and is used to fix the evaporation flask 24.

[0036] In this implementation scheme, the multi-interface design on the condenser 211 achieves the organic integration of vacuum, recovery, anti-boiling and rotation functions, enabling the functional modules to work together.

[0037] Specifically, the fixing component 23 includes a mounting base 231 disposed on the rotating component 22, a fixing head 232 installed inside the mounting base 231, a sealing head 233 fixed inside the fixing head 232 and inserted into the mouth of the evaporation flask 24, a clamping sleeve 234 installed inside the mounting base 231 and fitted onto the fixing head 232, and a mounting cover 235 threaded onto the outer wall of the mounting base 231.

[0038] In this embodiment, when the evaporation flask 24 needs to be installed on the fixing component 23, the flask 24 is inserted through the mounting cover 235 and into the fixing head 232, while the sealing head 233 is inserted into the flask mouth. Then, the mounting cover 235 is rotated and tightened, causing it to push the clamping sleeve 234 to squeeze the fixing head 232. The fixing head 232 contracts after being squeezed, thereby clamping the flask mouth of the evaporation flask 24 and sealing and fixing the evaporation flask 24. This not only ensures the airtightness requirements of the evaporation process, but also simplifies the operation process, makes the flask replacement more convenient, and avoids the leakage problems that may be caused by traditional fixing methods.

[0039] Specifically, the rotating assembly 22 includes an outer tube 221 fixed at the lower end of the right connector 216, an inner tube 222 rotatably mounted at the lower end of the outer tube 221, and a mounting base 231 fixed at the lower end of the inner tube 222. A driven gear 223 is fixed on the outer wall of the inner tube 222, and a housing 224 is fixed on the outer wall of the outer tube 221. A reduction motor 225 is installed inside the housing 224, and a drive gear 226 is fixed at the output end of the reduction motor 225 and meshes with the driven gear 223 for transmission.

[0040] In this embodiment, the output end of the reduction motor 225 drives the drive gear 226 to rotate. The drive gear 226, through the driven gear 223 and the inner tube 222, drives the evaporation flask 24 fixed on the fixed assembly 23 to rotate. This ensures the smooth rotation of the evaporation flask 24, making the solution heat evenly and improving the evaporation efficiency.

[0041] Specifically, the main component 21 also includes a three-way valve 218 fixed to the upper end of the left connection port 215, and a gas flow control valve 219 fixed to the other end of the three-way valve 218.

[0042] In this embodiment, flexible switching of gas passages and precise flow control are achieved. Different gas sources can be selected according to experimental needs, which can not only meet the conventional anti-boiling requirements, but also provide inert gas protection, greatly expanding the applicability and functionality of the device.

[0043] Specifically, the condenser tube 214 includes a spiral tube 2141 disposed inside the condenser 211. The two ends of the spiral tube 2141 are respectively connected and fixed with an upper connector 2142 and a lower connector 2143, and a refrigeration circulating water tank is connected between the upper connector 2142 and the lower connector 2143.

[0044] In this embodiment, a complete cooling medium circulation loop is formed between the condenser tube 214 and the refrigeration circulating water tank. After the cooling medium is pumped out of the refrigeration circulating water tank, it flows through the condenser tube 214, absorbs the latent heat released by the condensation of steam, and then returns to the water tank for cooling, forming a continuous and stable cooling cycle.

[0045] Specifically, the lower end of the capillary tube 217 extends into the interior of the evaporating flask 24 to blow onto the surface of the liquid inside the evaporating flask 24 and puncture the foam to prevent boiling over.

[0046] In this embodiment, the physical disturbance effect generated by the airflow impacting the liquid surface breaks the foam in the initial stage of foam formation, effectively blocking the process of foam aggregation and growth.

[0047] Specifically, the evaporator mechanism 2 also includes a lifting frame 27 fixed on the top left side of the base 1. The slider of the lifting frame 27 is fixed with a clamp 28 for fixing the condenser 211.

[0048] In this embodiment, the height of the main component 21 is flexibly adjustable to accommodate evaporation flasks 24 of different sizes.

[0049] Specifically, the gas flow control valve 219 works in conjunction with the vacuum pump connected to the upper connection port 212 to achieve dynamic balance between the gas inlet speed and the pumping speed, thereby maintaining a stable vacuum level.

[0050] In this embodiment, by dynamically balancing the intake and exhaust rates, precise control of the vacuum level is achieved, effectively maintaining a stable evaporation environment. This ensures evaporation efficiency while preventing the risk of explosive boiling caused by pressure fluctuations, significantly improving the overall performance of the device.

[0051] This invention discloses a method for using a high-efficiency anti-boiling rotary evaporator, specifically including the following steps:

[0052] S1, First, fix the evaporation flask 24 on the fixing component 23 and immerse it in the constant temperature water bath 26. Then start the rotating component 22 to control the evaporation flask 24 fixed on the fixing component 23 to rotate. Start the constant temperature water bath 26 to heat the temperature, the circulating condensate tank to cool it, and the vacuum pump to establish the initial vacuum.

[0053] S2, then, adjust the gas flow control valve 219 to control the gas to enter, the gas enters the evaporation flask 24 through the capillary tube 217, and the capillary tube 217 guides the airflow to the liquid surface inside the evaporation flask 24 to continuously suppress foam formation;

[0054] S3. Finally, the solvent in the evaporation flask 24 vaporizes upon heating, forming vapor that enters the condenser 211. The vapor circulates within the condenser tube 214 via a cooling medium provided by the refrigeration water tank, causing the solvent vapor to liquefy upon contact with the surface of the condenser tube 214 and fall into the recovery bottle 25 through the lower connection port 213 for collection.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency anti-boiling rotary evaporator device and its usage method, comprising a base (1), characterized in that: An evaporator mechanism (2) is provided on the base (1) and used for solvent evaporation. The evaporator mechanism (2) includes: The main component (21) includes a condenser (211) mounted on the base (1). The upper end of the condenser (211) is connected to and fixed with an upper connection port (212) for connecting a vacuum pump. The lower end of the condenser (211) is connected to and fixed with a lower connection port (213), and a recycling bottle (25) is installed at the lower end of the lower connection port (213). A condensing tube (214) is installed inside the condenser (211) for forming a cooling medium circulation. The left and right ends of the condenser (211) are connected to and fixed with a left connection port (215) and a right connection port (216), respectively. A thin tube (217) is fixed through the left connection port (215). An evaporation bottle (24) is mounted on one side of the main component (21), and a constant temperature water bath (26) is mounted on the top right side of the base (1). A rotating assembly (22) is disposed on the main assembly (21) and is used to control the rotation of the evaporating flask (24); A fixing component (23) is disposed on the rotating component (22) and is used to fix the evaporating flask (24).

2. The high-efficiency anti-boiling rotary evaporator device and its usage method according to claim 1, characterized in that: The fixing component (23) includes a mounting base (231) disposed on the rotating component (22), a fixing head (232) is installed inside the mounting base (231), a sealing head (233) is fixed inside the fixing head (232) and inserted into the mouth of the evaporating flask (24), a clamping sleeve (234) is installed inside the mounting base (231) and sleeved on the fixing head (232), and a mounting cover (235) is threaded on the outer wall of the mounting base (231).

3. The high-efficiency anti-boiling rotary evaporator device and its usage method according to claim 2, characterized in that: The rotating assembly (22) includes an outer tube (221) fixed at the lower end of the right connector (216), an inner tube (222) rotatably mounted at the lower end of the outer tube (221), and a mounting base (231) fixed at the lower end of the inner tube (222). A driven gear (223) is fixed on the outer wall of the inner tube (222), and a housing (224) is fixed on the outer wall of the outer tube (221). A reduction motor (225) is installed inside the housing (224), and a drive gear (226) is fixed at the output end of the reduction motor (225) and meshes with the driven gear (223) for transmission.

4. The high-efficiency anti-boiling rotary evaporator device and its usage method according to claim 1, characterized in that: The main component (21) also includes a three-way valve (218) fixed to the upper end of the left connection port (215), and a gas flow control valve (219) is fixed to the other end of the three-way valve (218).

5. The high-efficiency anti-boiling rotary evaporator device and its method of use according to claim 1, characterized in that: The condenser tube (214) includes a spiral tube (2141) disposed inside the condenser (211). The two ends of the spiral tube (2141) are respectively connected and fixed with an upper connector (2142) and a lower connector (2143), and a refrigeration circulating water tank is connected between the upper connector (2142) and the lower connector (2143).

6. The high-efficiency anti-boiling rotary evaporator device and its method of use according to claim 1, characterized in that: The lower end of the thin tube (217) extends into the interior of the evaporating flask (24) to blow onto the surface of the liquid inside the evaporating flask (24) and puncture the foam to prevent boiling over.

7. The high-efficiency anti-boiling rotary evaporator device and its method of use according to claim 1, characterized in that: The evaporator mechanism (2) also includes a lifting frame (27) fixed on the top left side of the base (1). The slider of the lifting frame (27) is fixed with a clamp (28) for fixing the condenser (211).

8. The high-efficiency anti-boiling rotary evaporator device and its method of use according to claim 4, characterized in that: The gas flow control valve (219) works in conjunction with the vacuum pump connected to the upper connection port (212) to achieve dynamic balance between the gas entry speed and the pumping speed, thereby maintaining a stable vacuum level.

9. A method of using a high-efficiency anti-boiling rotary evaporator, characterized in that: The high-efficiency anti-boiling rotary evaporator device according to any one of claims 1-8 specifically includes the following steps: S1, First, fix the evaporating flask (24) on the fixed component (23) and immerse it in the constant temperature water bath (26). Then start the rotating component (22) to control the evaporating flask (24) fixed on the fixed component (23) to rotate. Start the constant temperature water bath (26) to heat the temperature, the circulating condensate tank to cool it, and the vacuum pump to establish the initial vacuum. S2, then, adjust the gas flow control valve (219) to control the gas to enter, the gas enters the evaporation flask (24) through the thin tube (217), and the thin tube (217) guides the airflow to the liquid surface inside the evaporation flask (24) to continuously suppress foam formation; S3 Finally, the solvent in the evaporation flask (24) is heated and vaporized to form vapor that enters the condenser (211). The vapor circulates in the condenser tube (214) through the cooling medium provided by the refrigeration circulating water tank, so that the solvent vapor liquefies on the surface of the condenser tube (214) and falls into the recovery bottle (25) through the lower connection port (213) for collection.

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