Quick-release rotary evaporator condensing assembly

Abstract

The utility model proposes a kind of quick-release rotary evaporator condensing assembly, including base, heating bath kettle, main cover, the top of the base is fixedly connected with heating bath kettle, the corner of the base is fixedly connected with main cover;The inside movable joint of the main cover has lifting rod, the top of the lifting rod is fixedly connected with top head, and the front surface of the top head is equipped with digital display screen and switch;The front surface movable joint of the top head has carousel, and the angle of the carousel is adjustable.The utility model has the advantages that a PTFE sealing ring is fixedly connected at the contact of condenser port and interface end surface, to ensure no leakage under high vacuum environment.The carousel is rotatable, and after rotation, the screw is locked into the edge hole of corresponding top head to realize fixation.The overall structure of machine body, main shaft, distilling flask and condensing assembly is adjustable, the adjustment angle range is 30-60 degrees, to adjust the inclination angle of condenser, adapt to different solution boiling point requirements, and improve condensing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, and in particular to a quick-release rotary evaporator condenser assembly. Background Technology

[0002] Rotary evaporators are key equipment for organic solvent recovery and concentration, and their efficiency and convenience directly impact laboratory workflows. Existing condenser components have revealed significant drawbacks during long-term use:

[0003] The disassembly and assembly of condenser components is cumbersome and time-consuming: traditional designs rely on flange structures with multiple bolt connections. Replacing or cleaning the condenser requires removing multiple bolts, which is time-consuming and carries the risk of tools slipping and damaging the glass components (especially when frequently replacing serpentine and straight condenser tubes). Statistics show that the standard condenser component disassembly and assembly process takes an average of 5-8 minutes.

[0004] Insufficient or limited tilt angle adjustment: Fixed or limited angle adjustment mechanisms cannot flexibly handle complex operating conditions. For example, high-boiling-point solvents (such as ethylene glycol / 160℃) require a larger tilt angle to enhance condensation and reflux (nearly 60°), while low-boiling-point solvents (acetone / 56℃) require a smaller tilt angle (about 30°) to prevent vapor escape. Insufficient tilt angle adaptation can lead to a decrease in condensation efficiency or solvent loss of more than 10%.

[0005] Sealing reliability challenges: Under high temperature (>60℃) and high vacuum (approximately <1kPa) conditions, flange connection surfaces are prone to leakage due to thermal deformation. Traditional rubber seals are prone to swelling and failure in organic solvent vapors, causing vacuum fluctuations (pressure increase >50Pa).

[0006] These problems not only significantly extend the experimental cycle (e.g., replacing the condenser takes an average of more than 5 minutes), but also easily lead to solvent leakage (loss rate as high as 15%) and high-temperature vapor leakage (safety hazards) due to seal failure. The industry urgently needs to develop a modular condenser assembly solution that balances quick assembly / disassembly, flexible tilt adjustment, and high vacuum sealing reliability. Utility Model Content

[0007] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0008] Therefore, one objective of this utility model is to provide a quick-release rotary evaporator condenser assembly to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0009] To achieve the above objectives, one embodiment of the present invention provides a quick-release rotary evaporator condenser assembly, including a base, a heating bath, and a main sleeve. The heating bath is fixedly connected to the top of the base, and the main sleeve is fixedly connected to the corner of the base.

[0010] The main sleeve is internally connected to a lifting rod, and a top head is fixedly connected to the top of the lifting rod. A digital display screen and a switch are installed on the front of the top head.

[0011] A turntable is movably connected to the front of the top head. The angle of the turntable is adjustable. Screws are inserted at several points on the surface of the turntable, and the screws are threaded to the edge of the front of the top head.

[0012] The front of the turntable is fixedly connected to an organic body, a motor is installed on the organic body, the output end of the motor is connected to a main shaft via a belt assembly, and a distillation flask is detachably connected to the end of the main shaft.

[0013] The other end of the spindle is movably connected to an interface, and the outer surface of the interface has a recessed ring.

[0014] The outer surface of the interface is fitted with a condenser port, which is elastic. A ring of protrusions is fixedly connected to the inner surface of the condenser port, and the protrusions are inserted into the recesses. A buckle is clamped on the outer surface of the condenser port, and the end of the buckle is fastened with a fastener.

[0015] A sealing ring is fixedly connected at the contact point between the inner surface of the condenser port and the interface end face.

[0016] Preferably, in any of the above embodiments, the height of the lifting rod is adjustable and lockable, and the side of the main sleeve is threaded with a fastening head, the end of which abuts against the side of the lifting rod.

[0017] There is also a vacuum pump inside the machine to achieve the purpose of evacuating the internal components.

[0018] Using the above technical solution, a rotary evaporator can be used to recover and evaporate organic solvents. It utilizes a motor to drive the distillation flask to rotate. Because the flask is constantly rotating, boiling chips are unnecessary and bumping is avoided. Simultaneously, due to the continuous rotation, the liquid adheres to the walls of the distillation apparatus, forming a liquid film, increasing the evaporation area and accelerating the evaporation rate. Precautions should be taken when using it:

[0019] (1) During vacuum distillation, the liquid in the flask may boil violently when the temperature and vacuum are high. In this case, the vacuum should be reduced to allow the distillation to proceed smoothly.

[0020] (2) When evaporation is stopped, first stop heating, then stop vacuuming, and finally cut off the power to stop rotation.

[0021] Preferably, in any of the above solutions, the top head is welded to the lifting rod, and a ring of holes for matching screws is formed on the front side of the top head.

[0022] The core structure of this component consists of: a top head, a turntable, screws, an interface, a recess, a condenser port, a protrusion, a snap-fit, fasteners, and a sealing ring. Modular design: The condenser port and interface are quick-connect; simply slip them on and secure them with snap-fits and fasteners, replacing traditional flange connections. This allows for rapid disassembly and replacement of the condenser tubes, facilitating cleaning or replacement of condensers of different specifications (such as serpentine or straight tubes). A PTFE sealing ring is fixedly connected at the contact point between the condenser port and the interface end face to ensure no leakage under high vacuum conditions.

[0023] The turntable can be rotated, and after rotation, the screws are locked into the edge holes of the corresponding top head to achieve fixation. The overall structure of the machine body, main shaft, distillation flask, and condenser assembly is adjustable, with an adjustment angle range of 30-60 degrees, thereby adjusting the tilt angle of the condenser to adapt to the boiling point requirements of different solutions and improve condensation efficiency.

[0024] Preferably, of any of the above solutions, the motor is a brushless DC motor, and the distillation flask is made of borosilicate glass.

[0025] The above technical solution comprises the following components: a base and a lifting system. The base is a rectangular metal base with vertical main sleeves (stainless steel tubes) welded to its four corners. The heating bath is fixed to the center of the base and has a built-in electric heater. The lifting rod is nested within the main sleeves and its height is locked by threaded fasteners on the side walls. A top head (aluminum alloy platform) is welded to the top. A digital display and switch are integrated on the front of the top head.

[0026] Angle adjustment mechanism: Turntable: Connected to the front of the mandrel via bearings, with multiple locating holes evenly distributed around its circumference. Screws: Screwed through the locating holes of the turntable into the threaded holes on the edge of the mandrel, locking the turntable within the 30°-60° tilt angle range. Machine body: Bolted to the front of the turntable, containing a built-in motor (brushless DC motor) and vacuum pump.

[0027] Rotary evaporation unit, main shaft: driven by a motor via a belt assembly, output end snapped onto a distillation flask (borosilicate glass). Interface: located at the end of the main shaft, with a 2mm deep × 3mm wide annular groove machined around its outer surface.

[0028] Condenser quick-release system: Condenser port: made of elastic silicone, with a molded raised ring on the inner wall (size matching the concave area). Clip: 304 stainless steel clamp with notches, covering the corresponding position of the raised ring on the outer wall of the condenser port. Fastener: Bolts pass through both ends of the clip and are tightened with washer nuts. Sealing ring: made of PTFE, embedded in the sealing groove on the interface end face to form a vacuum seal with the condenser port.

[0029] Preferably, in any of the above solutions, the position of the buckle corresponds to the protruding position of the condenser port, and the buckle is a ring with a notch.

[0030] Preferably, the fasteners are washer nuts and bolts, and the sealing ring is made of PTFE.

[0031] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0032] This quick-release rotary evaporator condenser assembly utilizes a modular design with a combination of a top, turntable, screws, interface, recess, condenser port, protrusion, snap-fit, fasteners, and sealing ring. The condenser port and interface are quick-connected, allowing for direct insertion and securing with snap-fit ​​and fasteners, replacing traditional flange connections. This enables rapid disassembly and replacement of the condenser tubes, facilitating cleaning or replacement of condensers of different specifications (such as serpentine or straight tubes). A PTFE sealing ring is fixedly connected at the contact point between the condenser port and the interface end face to ensure leak-free operation under high vacuum conditions.

[0033] The turntable can be rotated, and after rotation, the screws are locked into the edge holes of the corresponding top head to achieve fixation. The overall structure of the machine body, main shaft, distillation flask, and condenser assembly is adjustable, with an adjustment angle range of 30-60 degrees, thereby adjusting the tilt angle of the condenser to adapt to the boiling point requirements of different solutions and improve condensation efficiency.

[0034] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0036] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of the recessed part of this utility model;

[0038] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0039] Figure 4 This is a partial structural diagram of the recessed part of this utility model.

[0040] In the diagram: 1-base, 2-heating bath, 3-main sleeve, 4-lifting rod, 5-top, 6-turntable, 7-screw, 8-body, 9-motor, 10-main shaft, 11-evaporator flask, 12-interface, 13-recessed, 14-condenser port, 15-protrusion, 16-clasp, 17-fastener, 18-sealing ring. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] like Figure 1-4 As shown, the quick-release rotary evaporator condenser assembly includes a base 1, a heating bath 2, and a main sleeve 3. The heating bath 2 is fixedly connected to the top of the base 1, and the main sleeve 3 is fixedly connected to the corner of the base 1.

[0044] The main sleeve 3 is internally connected to a lifting rod 4, and the top of the lifting rod 4 is fixedly connected to a top head 5. A digital display screen and a switch are installed on the front of the top head 5.

[0045] The front of the top head 5 is movably connected to a turntable 6. The angle of the turntable 6 is adjustable. Screws 7 are inserted at several points on the surface of the turntable 6. The screws 7 are threadedly connected to the edge of the front of the top head 5.

[0046] The front of the turntable 6 is fixedly connected to the body 8. The body 8 is equipped with a motor 9. The output end of the motor 9 is connected to the main shaft 10 through a belt assembly. The end of the main shaft 10 is detachably connected to the distillation flask 11.

[0047] The other end of the spindle 10 is movably connected to an interface 12, and a recessed ring 13 is formed on the outer surface of the interface 12;

[0048] The outer surface of the interface 12 is fitted with a condenser port 14. The condenser port 14 is elastic. A ring of protrusions 15 is fixedly connected to the inner surface of the condenser port 14. The protrusions 15 are inserted into the recesses 13. A buckle 16 is clamped on the outer surface of the condenser port 14. The end of the buckle 16 is fastened with a fastener 17.

[0049] A sealing ring 18 is fixedly connected at the contact point between the inner surface of the condenser port 14 and the end face of the interface 12.

[0050] Example 1: The height of the lifting rod 4 is adjustable and lockable. A fastening head is threaded onto the side of the main sleeve 3, with its end abutting against the side of the lifting rod 4. The top head 5 is welded to the lifting rod 4, and a ring of holes for matching screws 7 is formed on the front of the top head 5. The motor 9 is specifically a brushless DC motor, and the distillation flask 11 is made of borosilicate glass. The position of the latch 16 corresponds to the protrusion 15 of the condenser port 14, and the latch 16 is a notched ring. The fasteners 17 are specifically washer nuts and bolts, and the sealing ring 18 is made of PTFE.

[0051] Example 2: The machine body 8 also contains a vacuum pump to achieve vacuuming inside the components. The rotary evaporator can be used to recover and evaporate organic solvents. It utilizes a motor to drive the distillation flask 11 to rotate. Because the distillation flask 11 is constantly rotating, boiling chips are unnecessary and bumping is avoided. Simultaneously, due to the continuous rotation, the liquid adheres to the walls of the still, forming a liquid film, increasing the evaporation area and accelerating the evaporation rate. Precautions should be taken when using it:

[0052] (1) During vacuum distillation, the liquid in the flask may boil violently when the temperature and vacuum are high. In this case, the vacuum should be reduced to allow the distillation to proceed smoothly.

[0053] (2) When evaporation is stopped, first stop heating, then stop vacuuming, and finally cut off the power to stop rotation.

[0054] Component structure consists of: a base and a lifting system. Base 1: a rectangular metal base with vertical main sleeves 3 (stainless steel tubes) welded to the four corners. Heating bath 2: fixed in the middle of base 1, with a built-in electric heater. Lifting rod 4: nested inside the main sleeves 3, its height locked by threaded fasteners on the side walls, with a top head 5 (aluminum alloy platform) welded to the top. The top head 5 integrates a digital display screen and switches on its front.

[0055] Angle adjustment mechanism, turntable 6: movably connected to the front of the top head 5 via bearings, with multiple positioning holes evenly distributed around its circumference. Screw 7: screwed through the positioning holes of turntable 6 into the threaded holes on the edge of the top head 5, locking turntable 6 within the 30°-60° tilt angle range. Body 8: bolted to the front of turntable 6, containing a built-in motor 9 (brushless DC motor) and vacuum pump.

[0056] The rotary evaporation unit has a main shaft 10 driven by a motor 9 via a belt assembly, with its output end snapped into a distillation flask 11 (borosilicate glass). An interface 12 is located at the end of the main shaft 10, with a recessed groove 13 (2mm deep x 3mm wide) machined around its outer surface.

[0057] The condenser quick-release system includes: condenser port 14: made of elastic silicone, with a molded inner wall featuring a raised ring 15 (size matching the recessed area 13). Clip 16: a notched 304 stainless steel clamp covering the corresponding position of the raised ring 15 on the outer wall of condenser port 14. Fastener 17: a bolt passing through both ends of clip 16, secured with a washer nut. Sealing ring 18: made of PTFE, embedded in the sealing groove on the end face of interface 12, forming a vacuum seal with condenser port 14.

[0058] The working principle of this utility model is as follows:

[0059] Step 1: Condenser quick-release operation (solving the disassembly and assembly efficiency problem). Installation: Insert the condenser port 14 into the interface 12 until the protrusion 15 is embedded in the recess 13 (the figure shows a "click" positioning feel); Locking: Snap the buckle 16 to align the notch, and tighten the single set of fasteners 17 to complete the mechanical fixation (time < 45 seconds); Sealing: The sealing ring 18 deforms under pressure to fill the end face gap, achieving a vacuum leakage rate < 0.5% / h (test pressure -0.1MPa). Compared with traditional flange connections (taking more than 30 minutes), efficiency is improved.

[0060] Step 2: Tilt Angle Adjustment and Evaporation Control (Solving Condensation Efficiency Issues). Loosen screw 7 and rotate turntable 6 to the target angle; tighten screw 7 to fix turntable 6, changing the tilt angle of the condenser axis to achieve dual optimization: Low-boiling-point solvents (such as diethyl ether): Select a large tilt angle of 60° → extend the vapor path → increase condensation capture rate by >15%; High-boiling-point solvents (such as DMF): Select a small tilt angle of 30° → accelerate the gravity reflux of condensate → increase evaporation rate by 12%; Start motor 9 to drive distillation flask 11 to rotate (50-200 rpm), the solution forms a uniform liquid film on the flask wall to expand the evaporation area; When the vacuum pump is pumping pressure, if a sudden drop in pressure is detected (indicating risk of boiling over), the vacuum level is automatically reduced to a safe threshold.

[0061] Compared with the prior art, the present invention has the following advantages:

[0062] The modular design is achieved through the coordinated arrangement of the top head 5, turntable 6, screw 7, interface 12, recess 13, condenser port 14, protrusion 15, snap fastener 16, fastener 17, and sealing ring 18. The condenser port 14 and interface 12 are quick-connected; simply slip them on and secure them with snap fastener 16 and fastener 17, replacing the traditional flange connection. This allows for rapid disassembly and replacement of the condenser tubes, facilitating cleaning or replacement of condensers of different specifications (such as serpentine or straight tubes). A PTFE sealing ring is fixedly connected at the contact point between the condenser port 14 and interface 12 to ensure no leakage under high vacuum conditions.

[0063] The turntable 6 can be rotated. After rotation, the screw 7 is locked into the edge hole of the corresponding top head 5 to achieve fixation. The overall structure of the body 8, main shaft 10, distillation flask 11 and condenser assembly is adjustable. The adjustment angle range is 30-60 degrees, thereby adjusting the tilt angle of the condenser to adapt to the boiling point requirements of different solutions and improve condensation efficiency.

Claims

1. A quick-release rotary evaporator condenser assembly, characterized in that, It includes a base, a heating bath, and a main sleeve. The heating bath is fixedly connected to the top of the base, and the main sleeve is fixedly connected to the corner of the base. The main sleeve is internally connected to a lifting rod, and a top head is fixedly connected to the top of the lifting rod. A digital display screen and a switch are installed on the front of the top head. A turntable is movably connected to the front of the top head. The angle of the turntable is adjustable. Screws are inserted at several points on the surface of the turntable, and the screws are threaded to the edge of the front of the top head. The front of the turntable is fixedly connected to an organic body, a motor is installed on the organic body, the output end of the motor is connected to a main shaft via a belt assembly, and a distillation flask is detachably connected to the end of the main shaft. The other end of the spindle is movably connected to an interface, and the outer surface of the interface has a recessed ring. The outer surface of the interface is fitted with a condenser port, which is elastic. A ring of protrusions is fixedly connected to the inner surface of the condenser port, and the protrusions are inserted into the recesses. A buckle is clamped on the outer surface of the condenser port, and the end of the buckle is fastened with a fastener. A sealing ring is fixedly connected at the contact point between the inner surface of the condenser port and the interface end face.

2. The quick-release rotary evaporator condenser assembly as described in claim 1, characterized in that: The height of the lifting rod is adjustable and lockable, and the side of the main sleeve is threaded with a fastening head, the end of which abuts against the side of the lifting rod.

3. The quick-release rotary evaporator condenser assembly as described in claim 2, characterized in that: The top head is welded to the lifting rod, and a ring of holes for matching screws is opened on the front of the top head.

4. The quick-release rotary evaporator condenser assembly as described in claim 3, characterized in that: The motor is specifically a brushless DC motor, and the distillation flask is made of borosilicate glass.

5. The quick-release rotary evaporator condenser assembly as described in claim 4, characterized in that: The buckle is positioned corresponding to the protrusion at the condenser port, and the buckle is a ring with a notch.

6. The quick-release rotary evaporator condenser assembly as described in claim 5, characterized in that: The fasteners are specifically washer nuts and bolts, and the sealing ring is made of PTFE.

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