Novel explosion-proof rotary evaporator

Abstract

This invention discloses a novel anti-boiling rotary evaporator, belonging to the technical field of rotary evaporators. It includes a base, with a lifting column at the upper end of the base. An electronic control device is fixedly mounted on the upper end of the lifting column. A horizontal arm is vertically fixed to the front side wall of the lifting column. A touch panel electrically connected to the electronic control device is fixedly mounted at the front end of the horizontal arm. An inclined cylinder is fixedly connected to the middle of the horizontal arm, and an anti-boiling chamber is connected to the right end of the inclined cylinder. The anti-boiling chamber contains a flow guide plate and a porous boiling barrier plate. This invention, by incorporating the flow guide plate and porous boiling barrier plate inside the anti-boiling chamber, effectively prevents boiling over when the solvent evaporates due to heat. As the gas passes through the holes in the porous boiling barrier plate, the droplets are forced through the gap between the first and last plates by inertial collision and surface tension, and then fall back into the bottle, thus preventing boiling over.

Description

Technical Field

[0001] This utility model belongs to the technical field of rotary evaporators, specifically relating to a novel anti-explosion boiling rotary evaporator. Background Technology

[0002] Rotary evaporators are primarily used for the continuous distillation of large quantities of volatile solvents under reduced pressure, especially for the concentration of extracts and the distillation of receiving liquids during chromatographic separation. They can also separate and purify reaction products. The process involves using a vacuum pump to reduce system pressure, lowering the boiling point of the solution. A rotary motor rotates the evaporation flask, causing the solution to form a thin film on the flask wall, increasing the evaporation area. A heating bath heats the evaporation flask, causing the solvent to evaporate into vapor, which is then cooled and liquefied by a condenser before flowing into the receiving flask. Main applications include: in the chemical field, for the separation and purification of products after organic synthesis reactions, removing solvents from the reaction system; in the pharmaceutical field, for the concentration and purification of drug extracts in drug research and production; and in the food field, for the analysis and extraction of food components, such as juice concentration and flavor extraction. During operation, the liquid in the rotating flask is constantly rotating. Uneven heating can easily lead to localized overheating and explosive boiling. This explosive boiling can cause liquid to overflow the flask, damaging the instrument and even causing injury. Adding boiling stones or stir bar can prevent this, but the effect is not ideal. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a new type of explosion-proof rotary evaporator, which solves the problems mentioned in the background art.

[0004] The purpose of this utility model is achieved as follows: A novel explosion-proof rotary evaporator includes a base, a lifting column at the upper end of the base, an electrical control device fixedly mounted at the upper end of the lifting column, a horizontal arm vertically fixedly connected to the front side wall of the lifting column, a touch panel electrically connected to the electrical control device fixedly mounted at the front end of the horizontal arm, an inclined cylinder fixedly connected to the middle position of the horizontal arm, a vacuum pump and a collection bottle connected to the left end of the inclined cylinder, and an explosion-proof boiling chamber connected to the right end of the inclined cylinder. A docking part is provided at the right end of the explosion-proof boiling chamber, and a rotating bottle is detachably connected to the docking part. A heating water bath is fixedly mounted on the upper surface of the base, and the heating water bath is correspondingly positioned to the docking part. The explosion-proof boiling chamber contains a flow guide plate and a porous boiling barrier plate. The flow guide plate includes a first section plate and a last section plate, with a gap between the first section plate and the last section plate. The porous boiling barrier plate is fixedly mounted above the last section plate, and its surface has several through holes. In use, by setting a flow guide plate and a porous boiling barrier plate inside the anti-boiling chamber, when the solvent is heated and evaporated, the gas passes through the through holes of the porous boiling barrier plate. Due to inertial collision and surface tension, the droplets pass through the gap between the first and last plates and then fall back into the bottle, effectively preventing boiling over.

[0005] Furthermore, the porous boiling barrier plate is made of polytetrafluoroethylene, and the pore diameter of the through holes is ≤5 mm.

[0006] Furthermore, the lifting column includes a first column and a second column. The lower end of the first column is vertically fixed to the upper surface of the base, and the second column is slidably sleeved on the upper end of the first column. The first column and the second column are connected by a transmission assembly, which is connected to a drive device. In use, the drive device drives the transmission assembly, which in turn moves the second column up or down, thereby causing the horizontal arm and the rotating bottle to move up and down, achieving rapid height adjustment of the rotating bottle.

[0007] Furthermore, a rotating seat is provided on the front side wall of the second column, and the rotating seat is electrically connected to the electronic control device, and the rear end of the cross arm is fixedly connected to the outer end of the rotating seat.

[0008] The beneficial effects of this invention are as follows: Compared with the prior art, this invention eliminates the need for an external gas source or complex circuitry through a physical explosion-proof structure, reducing the risk of explosive boiling and improving safety. By setting a flow guide plate and a porous boiling barrier plate inside the explosion-proof chamber, when the solvent evaporates due to heat, the gas passes through the holes of the porous boiling barrier plate. Due to inertial collision and surface tension, the droplets pass through the gap between the first and last plates and then fall back into the bottle, effectively preventing explosive boiling. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0010] Figure 2 This is a top view of the structure of this utility model;

[0011] Figure 3 This is a left-view stereoscopic structural diagram of the present invention;

[0012] Figure 4 This is a right-view stereoscopic structural diagram of the present invention;

[0013] Figure 5 This is the utility model Figure 1 Enlarged view of A in the middle.

[0014] In the diagram: 1. Base, 2. Lifting column, 3. Horizontal arm, 4. Electrical control device, 5. Touch panel, 6. Inclined cylinder, 7. Vacuum pump, 8. Collection bottle, 9. Explosion-proof boiling chamber, 10. Rotary bottle, 11. Heating water bath, 12. Porous boiling barrier plate, 13. First section plate, 14. Tail section plate, 15. Gap, 16. Through hole, 17. Drive device, 18. Rotary seat. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that all directional terms such as up, down, front, back, left, and right appearing in the present invention are not intended to limit the present invention, but are only used to more clearly explain and interpret the present invention. Example

[0016] like Figure 1-5 As shown, this embodiment discloses a novel explosion-proof rotary evaporator, which includes a base 1. A lifting column 2 is provided at the upper end of the base 1. An electronic control device 4 is fixedly provided at the upper end of the lifting column 2. A horizontal arm 3 is vertically fixedly connected to the front side wall of the lifting column 2. A touch panel 5 electrically connected to the electronic control device 4 is fixedly provided at the front end of the horizontal arm 3. An inclined cylinder 6 is fixedly connected at the middle position of the horizontal arm 3. A vacuum pump 7 and a collection bottle 8 are connected to the left end of the inclined cylinder 6. An explosion-proof boiling chamber 9 is connected to the right end of the inclined cylinder 6. A docking part is provided at the right end of the explosion-proof boiling chamber 9. A rotating bottle 10 is detachably connected to the docking part. A heating water bath 11 is fixedly provided on the upper surface of the base 1, and the heating water bath 11 is correspondingly provided with the docking part. The anti-boiling-out chamber 9 is internally equipped with a flow guide plate and a porous boiling-blocking plate 12. The flow guide plate includes a first section plate 13 and a last section plate 14, with a gap 15 between the first section plate 13 and the last section plate 14. The porous boiling-blocking plate 12 is fixedly installed above the last section plate 14, and its surface has several through holes 16. In use, by installing the flow guide plate and the porous boiling-blocking plate 12 inside the anti-boiling-out chamber 9, when the solvent evaporates due to heat, the gas passes through the through holes 16 of the porous boiling-blocking plate 12. Due to inertial collision and surface tension, the droplets pass through the gap 15 between the first section plate 13 and the last section plate 14 and then fall back into the bottle, effectively preventing boiling-out. Example

[0017] like Figure 1-5As shown, this embodiment discloses a novel explosion-proof rotary evaporator, which includes a base 1. A lifting column 2 is provided at the upper end of the base 1. An electronic control device 4 is fixedly provided at the upper end of the lifting column 2. A horizontal arm 3 is vertically fixedly connected to the front side wall of the lifting column 2. A touch panel 5 electrically connected to the electronic control device 4 is fixedly provided at the front end of the horizontal arm 3. An inclined cylinder 6 is fixedly connected at the middle position of the horizontal arm 3. A vacuum pump 7 and a collection bottle 8 are connected to the left end of the inclined cylinder 6. An explosion-proof boiling chamber 9 is connected to the right end of the inclined cylinder 6. A docking part is provided at the right end of the explosion-proof boiling chamber 9. A rotating bottle 10 is detachably connected to the docking part. A heating water bath 11 is fixedly provided on the upper surface of the base 1, and the heating water bath 11 is correspondingly provided with the docking part. The anti-boiling-out chamber 9 is internally equipped with a flow guide plate and a porous boiling-blocking plate 12. The flow guide plate includes a first section plate 13 and a last section plate 14, with a gap 15 between the first section plate 13 and the last section plate 14. The porous boiling-blocking plate 12 is fixedly installed above the last section plate 14, and its surface has several through holes 16. In use, by installing the flow guide plate and the porous boiling-blocking plate 12 inside the anti-boiling-out chamber 9, when the solvent evaporates due to heat, the gas passes through the through holes 16 of the porous boiling-blocking plate 12. Due to inertial collision and surface tension, the droplets pass through the gap 15 between the first section plate 13 and the last section plate 14 and then fall back into the bottle, effectively preventing boiling-out.

[0018] For better performance, the porous boiling barrier plate 12 is made of polytetrafluoroethylene, and the pore diameter of the through hole 16 is ≤5 mm.

[0019] For better performance, the lifting column 2 includes a first column and a second column. The lower end of the first column is vertically fixed to the upper surface of the base 1, and the second column is slidably sleeved on the upper end of the first column. The first column and the second column are connected by a transmission assembly, which is connected to a drive device 17. In use, the drive device 17 drives the transmission assembly, which in turn moves the second column up or down, thereby causing the horizontal arm 3 and the rotating bottle 10 to move up and down, achieving rapid height adjustment of the rotating bottle 10.

[0020] For better results, a rotating seat 18 is provided on the front side wall of the second column, and the rotating seat 18 is electrically connected to the electronic control device 4. The rear end of the cross arm 3 is fixedly connected to the outer end of the rotating seat 18.

[0021] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A novel explosion-proof rotary evaporator, including a base, characterized in that: A lifting column is provided at the upper end of the base, and an electric control device is fixedly provided at the upper end of the lifting column. A horizontal arm is vertically fixedly connected to the front side wall of the lifting column. A touch panel electrically connected to the electric control device is fixedly provided at the front end of the horizontal arm. An inclined cylinder is fixedly connected at the middle position of the horizontal arm. A vacuum pump and a collection bottle are connected to the left end of the inclined cylinder. An explosion-proof boiling box is connected to the right end of the inclined cylinder. A docking part is provided at the right end of the explosion-proof boiling box. A rotating bottle is detachably connected to the docking part. A heating water bath is fixedly installed on the upper surface of the base, and the heating water bath is correspondingly installed with the docking part. The anti-boiling chamber is equipped with a flow guide plate and a porous boiling barrier plate. The flow guide plate includes a first section plate and a last section plate, with a gap between the first section plate and the last section plate. The porous boiling barrier plate is fixedly installed above the last section plate, and the surface of the porous boiling barrier plate has several through holes.

2. The novel explosion-proof rotary evaporator according to claim 1, characterized in that: The porous boiling barrier plate is made of polytetrafluoroethylene, and the diameter of the through holes is ≤5 mm.

3. The novel explosion-proof rotary evaporator according to claim 2, characterized in that: The lifting column includes a first column and a second column. The lower end of the first column is vertically fixed to the upper surface of the base. The second column is slidably sleeved on the upper outside of the first column. The first column and the second column are connected by a transmission assembly, which is connected to a drive device.

4. The novel explosion-proof rotary evaporator according to claim 3, characterized in that: The front side wall of the second column is provided with a rotating seat, and the rotating seat is electrically connected to the electronic control device. The rear end of the cross arm is fixedly connected to the outer end of the rotating seat.

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