Rotary evaporation system and distillation flask loading and unloading device for rotary evaporation system

Abstract

This invention relates to a rotary evaporation system and a distillation flask loading and unloading device for the rotary evaporation system. The distillation flask loading and unloading device for a rotary evaporation system includes: a distillation flask carrying mechanism; a distillation flask conveying mechanism for conveying the distillation flask to the distillation flask carrying mechanism and for removing the distillation flask from the distillation flask carrying mechanism; and a carrying drive mechanism for driving the distillation flask carrying mechanism to move between a loading / unloading position and a distillation position. The above-described distillation flask loading and unloading device for a rotary evaporation system mechanizes the distillation flask replacement operation, improving the automation level of rotary evaporation.

Description

Technical Field

[0001] This invention relates to the field of rotary evaporation, and in particular to a rotary evaporation apparatus and a distillation flask loading and unloading device for a rotary evaporation system. Background Technology

[0002] Rotary evaporators are widely used evaporation instruments in laboratories. They consist of a motor, distillation flask, heating pan, and condenser, and are primarily used for the continuous distillation of volatile solvents under reduced pressure. They are applied in fields such as chemistry, chemical engineering, and biomedicine. A motor drives the distillation flask to rotate, causing the liquid to adhere to the walls of the still, forming a liquid film that increases the evaporation area and accelerates the evaporation rate. This can be used to recover and evaporate organic solvents. To further improve the efficiency and stability of rotary evaporators, those skilled in the art have conducted extensive research. For example, Chinese utility model patent CN210331706U discloses a rotary evaporator that significantly improves the stability of the collection bottle after installation through a fixing device, achieving a stable collection bottle and solving the problem of unsatisfactory stability of the collection bottle in common laboratory rotary evaporators where waste liquid can be collected. Another example is Chinese utility model patent CN205462317U, which discloses a constant-temperature water bath rotary evaporator. This device features a heat-insulating cover with at least two openings, each equipped with a fixing clamping device. The main improvement is in the insulation cover, which accommodates two rotary evaporators in one flask, reducing costs, saving space, and increasing efficiency. Summary of the Invention

[0003] The problem the invention aims to solve

[0004] Traditional rotary evaporators require manual disassembly and reassembly of the distillation flasks after evaporation, followed by the installation of the next batch of flasks before the next rotary evaporation operation. This results in low automation. To address this issue, this invention provides a distillation flask loading and unloading device for rotary evaporation systems, which improves the automation level of rotary evaporation.

[0005] Solution for solving the problem

[0006] A distillation flask loading and unloading device for a rotary evaporation system, comprising:

[0007] Distillation flask support mechanism;

[0008] A distillation flask conveying mechanism is used to convey distillation flasks to the distillation flask carrying mechanism and to remove distillation flasks from the distillation flask carrying mechanism.

[0009] A carrying drive mechanism for moving the distillation flask carrying mechanism to switch between a loading / unloading position and a distillation position; and

[0010] The control unit is used to control the operation of the distillation flask conveying mechanism and the load-bearing drive mechanism.

[0011] Optionally, the distillation flask conveying mechanism includes:

[0012] Distillation flask clamping assembly; and

[0013] A drive component for driving the movement of the distillation flask clamping assembly.

[0014] Optionally, the driving component includes:

[0015] A first driving component is used to drive the distillation flask clamping component to move along a first direction; and

[0016] The second drive component is used to drive the first drive component to move along the second direction.

[0017] Optionally, the first drive component is a lead screw motor or a cylinder, and / or the second drive component is a lead screw motor or a cylinder.

[0018] Optionally, the distillation flask clamping assembly includes at least two grippers.

[0019] Optionally, the distillation flask conveying mechanism includes a distillation flask loading mechanism and a distillation flask unloading mechanism.

[0020] Optionally, the distillation flask carrying mechanism includes:

[0021] Distillation flask tray; and

[0022] A distillation flask fixing assembly is used to secure the distillation flask to the distillation flask tray.

[0023] Optionally, the distillation flask carrying mechanism further includes:

[0024] A tray tilting drive mechanism is used to switch the distillation flask tray between an initial state and a tilted docking state.

[0025] Optionally, the distillation flask carrying mechanism further includes a support platform, on which the distillation flask tray is rotatably mounted.

[0026] Optionally, the distillation flask carrying mechanism further includes a tray tilting drive mechanism; the tray tilting drive mechanism drives the support platform to rotate, thereby driving the distillation flask tray to switch between an initial state and a tilted docking state.

[0027] Optionally, the distillation flask fixing assembly includes a magnetic element disposed on the distillation flask tray.

[0028] Optionally, the magnetic component is an electromagnet.

[0029] Optionally, it also includes a distillation flask; the distillation flask tray is provided with a first positioning part, and the bottom surface of the distillation flask is provided with a second positioning part that matches the first positioning part.

[0030] Optionally, it also includes a distillation flask; the distillation flask has a mouth-joining surface, which is a frosted surface.

[0031] The present invention also provides a rotary evaporation system, including a rotary evaporator and a distillation flask loading and unloading device for the rotary evaporation system provided by the present invention.

[0032] The effects of the invention

[0033] The distillation flask loading and unloading device for the rotary evaporation system described above enables mechanized operation of distillation flask replacement and improves the automation level of rotary evaporation.

[0034] The aforementioned rotary evaporation system, including the distillation flask loading and unloading device provided by this invention, realizes the mechanized operation of distillation flask replacement and improves the automation level of rotary evaporation. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a distillation flask loading and unloading device for a rotary evaporation system provided in an embodiment of the present invention.

[0036] Figure 2 for Figure 1 A schematic diagram of the distillation flask conveying mechanism.

[0037] Figure 3 for Figure 1 A schematic diagram of the structure of the distillation flask support mechanism and the support drive mechanism.

[0038] Figure 4 Load the distillation flask with Figure 3 The diagram shows the structure of the distillation flask support mechanism.

[0039] Figure 5 for Figure 4 This is a schematic diagram of the structure when the distillation flask carrying mechanism is switched to the distillation position.

[0040] Figure 6 for Figure 5 A schematic diagram of the structure when the tray of the distillation flask is switched to the tilted docking state.

[0041] Figure 7 This is a schematic diagram of the distillation flask loading and unloading device when the distillation flask tray is in an inclined docking position.

[0042] Explanation of reference numerals in the attached figures

[0043] 1. Distillation flask; 2. Load-bearing drive mechanism; 3. Support platform; 4. Support frame; 5. Tray tilting drive mechanism; 6. Distillation flask clamping assembly; 7. First drive assembly; 8. Second drive assembly; 9. First guide rail; 10. Gripper; 11. Second guide rail; 12. Distillation flask tray; 13. Distillation flask; 14. First positioning part; 15. Bottle mouth mating surface. Detailed Implementation

[0044] To make the technical solution and beneficial effects of the present invention more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0045] In the description of this invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limiting this invention.

[0046] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature above second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0049] like Figures 1 to 7 As shown, an embodiment of the present invention provides a distillation flask loading and unloading device for a rotary evaporation system, including a distillation flask carrying mechanism, a distillation flask conveying mechanism, a carrying drive mechanism 2, and a control unit. The distillation flask conveying mechanism is used to transport distillation flasks 1 onto the distillation flask carrying mechanism and to remove distillation flasks 1 from the distillation flask carrying mechanism. The carrying drive mechanism 2 is used to drive the distillation flask carrying mechanism to move and switch between a loading / unloading position and a distillation position. The control unit is used to control the operation of the distillation flask conveying mechanism and the carrying drive mechanism 2.

[0050] It is understandable that the loading and unloading position of the distillation flask carrier refers to the position where distillation flask 1 is loaded onto the distillation flask carrier, and of course, it is also the position where distillation flask 1 is unloaded from the distillation flask carrier. The distillation position of the distillation flask carrier refers to the position where distillation flask 1 is docked with the rotary evaporator.

[0051] During continuous operation of the rotary evaporation system, when the volatile solvent in distillation flask 1 has evaporated completely, the operation of replacing distillation flask 1 using the distillation flask loading and unloading device includes the following steps:

[0052] S01. The distillation flask carrying mechanism is moved to the loading / unloading position by the carrying drive mechanism 2;

[0053] S02. Remove the distillation flask 1 from the distillation flask carrying mechanism using the distillation flask conveying mechanism;

[0054] S03. Place the replaced distillation flask 1 on the distillation flask support mechanism;

[0055] S04, the load-bearing drive mechanism 2 moves the distillation flask load-bearing mechanism to the distillation position.

[0056] Therefore, the distillation flask loading and unloading device for the rotary evaporation system described above realizes the mechanized operation of changing distillation flask 1, improves the automation level of rotary evaporation, and thus improves the efficiency of rotary evaporation.

[0057] In addition, the automation level of rotary evaporation is improved, reducing the steps of manual operation and saving manpower. Further, the steps of manual operation are reduced, thereby reducing the operation errors caused by human factors.

[0058] Specifically, in this embodiment, the distillation flask conveying mechanism includes a distillation flask clamping component 6 and a driving component for driving the distillation flask clamping component 6 to move. Specifically, during the operation, the distillation flask 1 is clamped by the clamping component, and the clamping component is driven to move by the driving component, thereby realizing the movement of the distillation flask 1.

[0059] Specifically, in this embodiment, the distillation flask clamping component 6 is a pneumatic gripper, which uses compressed air as power to clamp the distillation flask 1. It can be understood that in another feasible embodiment, the distillation flask clamping component is not limited to a pneumatic gripper, and can also be an electromagnetic gripper or an electric gripper, etc., any other structure that can pick up or put down the distillation flask.

[0060] More specifically, refer Figure 1 and 2 Figure 7, in this embodiment, the driving component includes a first driving component 7 and a second driving component 8. The first driving component 7 is used to drive the distillation flask clamping component 6 to move in the first direction. The second driving component 8 is used to drive the first driving component 7 to move in the second direction, thereby driving the distillation flask clamping component 6 to move in the second direction. It can be understood that the first direction is different from the second direction. Specifically, in this embodiment, the first direction and the second direction are perpendicular. And specifically in the use state, the first direction is along the vertical direction, and the second direction is along the horizontal direction.

[0061] It can be understood that in another feasible embodiment, the first direction and the second direction are not limited to being perpendicular, and the included angle between them can also be any value between 0 degrees and 90 degrees. Correspondingly, specifically in the use state, the first direction is not limited to the vertical direction, and the second direction is not limited to the horizontal direction.

[0062] In this embodiment, both the first driving component 7 and the second driving component 8 are screw motors. It can be understood that in another feasible embodiment, the first driving component 7 is not limited to a screw motor, and can also be a cylinder or any other driving mechanism that can drive the distillation flask clamping component 6 to move; the second driving component 8 is also not limited to a screw motor, and can also be a cylinder or any other driving mechanism that can drive the first driving component 7 to move. The first driving component 7 and the second driving component 8 can be the same driving mechanism or different driving mechanisms.

[0063] It can be understood that through the first driving component 7 and the second driving component 8, the distillation flask clamping component 6 can be driven to move in a two-dimensional plane.

[0064] Refer Figure 2In this embodiment, the distillation flask loading and unloading device further includes a first guide rail 9 extending along a first direction and a second guide rail 11 extending along a second direction. A first driving assembly 7 drives the distillation flask clamping assembly 6 to move along the first guide rail 9. A second driving assembly 8 drives the first driving assembly 7 to move along the second guide rail 11.

[0065] In this embodiment, the distillation flask clamping assembly 6 includes a gripper 10.

[0066] It should be noted that, in another feasible embodiment, the distillation flask clamping assembly may include at least two grippers. This allows the distillation flask conveying mechanism to be pre-operated, such that one gripper pre-holds a replacement distillation flask while the other gripper is unloaded. When it is necessary to replace the distillation flask on the distillation flask carrier, the unloaded gripper unloads the distillation flask from the carrier and loads the pre-held replacement distillation flask onto the carrier. This avoids the waiting time for the distillation flask loading and unloading device to pick up and place the flask, thereby further improving the efficiency of rotary evaporation.

[0067] Optionally, in another feasible embodiment, the distillation flask clamping assembly is not limited to including two jaws, but may also include more than two jaws, thereby reducing the number of times the distillation flask is transported by the distillation flask conveying mechanism. Furthermore, if the rotary evaporator can perform rotary evaporation on multiple distillation flasks simultaneously, and the distillation flask clamping assembly includes at least three jaws, at least two distillation flasks can be pre-clamped, allowing for simultaneous or sequential replacement of the flasks, thereby improving the efficiency of rotary evaporation.

[0068] It is understood that, in another feasible embodiment, the driving component may further include a third driving component for driving the second driving component to move along a third direction. The third driving component drives the second driving component to move along a third direction, which in turn drives the first driving component to move along a third direction, i.e., drives the distillation flask clamping component to move along a third direction. Thus, the movement of the distillation flask clamping component in three-dimensional space is realized.

[0069] The selection of the third drive component can be the same as that of the first drive component, and will not be elaborated here.

[0070] It is understood that, in other feasible embodiments, the distillation flask conveying mechanism is not limited to the above-mentioned mechanism, but may also be a structure such as a robotic arm, which can convey the distillation flask to the distillation flask carrying mechanism, or remove the distillation flask from the distillation flask carrying mechanism.

[0071] Optionally, in another feasible embodiment, the distillation flask conveying mechanism includes a distillation flask loading mechanism and a distillation flask unloading mechanism. It can be understood that the distillation flask loading mechanism is used to load the distillation flask onto the distillation flask carrying mechanism, and the distillation flask unloading mechanism is used to unload the distillation flask on the distillation flask carrying mechanism. During the continuous operation of the rotary evaporation system, when the volatile solvent in the distillation flask has evaporated, and when replacing the distillation flask loading and unloading device, after the distillation flask unloading device unloads the distillation flask on the distillation flask carrying mechanism, the distillation flask loading mechanism can directly load the replaced distillation flask onto the distillation flask carrying mechanism, avoiding the time for waiting for the distillation flask loading and unloading device to pick up and place the distillation flask, thereby further improving the efficiency of rotary evaporation.

[0072] Refer Figure 3 , in this embodiment, the distillation flask carrying mechanism includes a distillation flask tray 12 and a distillation flask fixing component. The distillation flask fixing component is used to fixedly arrange the distillation flask 1 on the distillation flask tray 12.

[0073] Furthermore, refer Figure 1 , Figures 3 to 7 , in this embodiment, the distillation flask carrying mechanism further includes a support platform 3, and the distillation flask tray 12 is rotatably arranged on the support platform 3. In this embodiment, the distillation flask tray 12 can rotate together with the distillation flask 1. Thereby, the contact surface between the distillation flask 1 and the distillation flask tray 12 can be prevented from being rubbed, thereby increasing the service life of the distillation flask 1. It can be understood that in another feasible embodiment, the distillation flask tray may not rotate, and only by rotating the distillation flask, the operation of rotary evaporation can be achieved.

[0074] In this embodiment, the distillation flask carrying mechanism further includes a tray tilting drive mechanism 5. The tray tilting drive mechanism 5 drives the support platform 3 to rotate, so as to drive the distillation flask tray 12 to switch between the initial state and the inclined docking state. Generally, during the use of the rotary evaporator, the distillation flask 1 is arranged obliquely. In this embodiment, by driving the support platform 3 to rotate through the tray tilting drive mechanism 5, the distillation flask tray 12 is further driven to switch to the inclined docking state to better dock with the rotary evaporator. The initial state of the distillation flask tray 12 refers to Figure 5 as shown. The inclined docking state of the distillation flask tray 12 refers to Figure 6 , Figure 7 as shown.

[0075] It can be understood that the structure of the distillation flask 1 is adapted to the corresponding rotary evaporator, so that the distillation flask 1 can be docked with the rotary evaporator.

[0076] Specifically, in this embodiment, refer Figure 4 , the distillation flask 1 has a bottle mouth docking surface 15. The bottle mouth docking surface 15 is a frosted surface, so that it can be directly docked with the rotary evaporator that also uses a frosted docking surface by pressing to achieve a sealed docking.

[0077] Specifically, in this embodiment, the bottle neck mating surface 15 is a plane. It is understood that in other feasible embodiments, the bottle neck mating surface is not limited to a plane, but can also be a regular or irregular surface such as a V-shaped surface.

[0078] Optionally, in one feasible embodiment, the mating surface of the distillation flask's neck is covered with a sealing layer. This increases the sealing performance between the distillation flask and the rotary evaporator. Specifically, the sealing layer is a plastic sealing layer. Specifically, the sealing layer can be fixed to the mating surface of the distillation flask's neck by adhesive bonding.

[0079] Of course, it is understood that in other feasible embodiments, the tray tilting drive mechanism can also directly drive the distillation flask tray to switch between the initial state and the tilted docking state.

[0080] In this embodiment, the tray tilting drive mechanism 5 is a motor. It is understood that in other feasible embodiments, the tray tilting drive mechanism is not limited to a motor, but can also be a rotary cylinder or other structure capable of driving the distillation flask tray to rotate.

[0081] In this embodiment, the distillation flask carrying mechanism further includes a support frame 4, and a support platform 3 is rotatably mounted on the support frame 4. The carrying drive mechanism 2 drives the support frame 4 to move, thereby driving the support platform 3 to move, so as to realize the movement of the distillation flask carrying mechanism.

[0082] In this embodiment, the load-bearing drive mechanism 2 is a lead screw motor. It is understood that in other feasible embodiments, the load-bearing drive mechanism is not limited to a lead screw motor, but can also be a cylinder or other structure capable of driving the distillation flask load-bearing mechanism to move.

[0083] In this embodiment, the distillation flask fixing assembly includes a magnetic element (not shown) disposed on the distillation flask tray 12. It is understood that the adapted distillation flask 1 can be attracted by the magnetic force generated by the magnetic element. Optionally, the adapted distillation flask 1 is formed of a metal material, or the adapted distillation flask 1 is fixed with a structure such as a metal sheet that can be attracted by magnetic force.

[0084] Further, optionally, the magnetic component is an electromagnet. Thus, when it is necessary to fix the distillation flask 1, the magnetic component is energized, securing the distillation flask tray 12 to the distillation flask 1. When it is necessary to remove the distillation flask 1, the magnetic component is de-energized, causing the magnetic force generated by the magnetic component to disappear, thus making it easier to remove the distillation flask 1.

[0085] Of course, it is understood that in other feasible embodiments, the structure of the distillation flask fixing assembly is not limited to this, and can also be achieved by other mechanical fixing methods.

[0086] In this embodiment, the distillation flask loading and unloading device also includes a distillation flask 1; a first positioning part 14 is provided on the distillation flask tray 12, and a second positioning part (not shown) matching the first positioning part is provided on the bottom surface of the distillation flask 1. Therefore, the distillation flask 1 can be placed on the distillation flask tray 12 at a preset position more quickly.

[0087] Specifically, in this embodiment, the first positioning part 14 is a protrusion, and the second positioning part is a groove. More specifically, the first positioning part 14 is a hemispherical protrusion, and the second positioning part is a hemispherical groove. It is understood that in other feasible embodiments, the structure of the first positioning part is not limited to this, and can be any regular or irregular structure.

[0088] In this embodiment, the bottom surface of the distillation flask 1 is a plane, and the second positioning part is a groove, which does not affect the stable placement of the distillation flask 1.

[0089] It is understood that the distillation flask loading and unloading device includes multiple distillation flasks 1. In addition to the distillation flasks 1 in operation, it also includes several rotary evaporation distillation flasks 13. In specific operations, the rotary evaporation distillation flasks 13 can be placed in the pick-up area, and then the distillation flasks in the pick-up area can be transported to the distillation flask carrying mechanism by the distillation flask conveying mechanism.

[0090] Furthermore, in this embodiment, the control unit is also used to control the operation of the tray tilting drive mechanism.

[0091] An embodiment of the present invention provides a rotary evaporation system, including a rotary evaporator and a distillation flask loading and unloading device for the rotary evaporation system provided by the present invention.

[0092] The aforementioned rotary evaporation system, including the distillation flask loading and unloading device provided by this invention, realizes the mechanized operation of distillation flask replacement and improves the automation level of rotary evaporation.

[0093] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of the present invention and do not limit the scope of protection of this patent.

Claims

1. A distillation flask loading and unloading device for a rotary evaporation system, characterized in that, include: A distillation flask carrying mechanism includes a distillation flask, a distillation flask tray, a distillation flask fixing assembly, a tray tilting drive mechanism, and a support platform. The distillation flask fixing assembly is used to fix the distillation flask on the distillation flask tray. The distillation flask tray is provided with a first positioning part, and the bottom surface of the distillation flask is provided with a second positioning part that matches the first positioning part. The distillation flask tray is rotatably mounted on the support platform. The tray tilting drive mechanism drives the support platform to rotate, thereby driving the distillation flask tray to switch between an initial state and a tilted docking state. A distillation flask conveying mechanism for conveying the distillation flask to the distillation flask carrying mechanism and for removing the distillation flask from the distillation flask carrying mechanism; A carrying drive mechanism is used to move the distillation flask carrying mechanism to switch between a loading / unloading position and a distillation position. The loading / unloading position of the distillation flask carrying mechanism refers to the position where the distillation flask is loaded onto the distillation flask carrying mechanism and the position where the distillation flask is unloaded from the distillation flask carrying mechanism. The distillation position of the distillation flask carrying mechanism refers to the position where the distillation flask is docked with the rotary evaporator. The control unit is used to control the operation of the distillation flask conveying mechanism and the load-bearing drive mechanism.

2. The distillation flask loading and unloading device for a rotary evaporation system according to claim 1, characterized in that, The distillation flask conveying mechanism includes: Distillation flask clamping assembly; and A drive component for driving the movement of the distillation flask clamping assembly.

3. The distillation flask loading and unloading device for a rotary evaporation system according to claim 2, characterized in that, The driving component includes: A first driving component is used to drive the distillation flask clamping component to move along a first direction; and The second drive component is used to drive the first drive component to move along the second direction.

4. The distillation flask loading and unloading device for a rotary evaporation system according to claim 3, characterized in that, The first drive component is a lead screw motor or a cylinder, and / or the second drive component is a lead screw motor or a cylinder.

5. The distillation flask loading and unloading device for a rotary evaporation system according to any one of claims 2 to 4, characterized in that, The distillation flask clamping assembly includes at least two grippers.

6. The distillation flask loading and unloading device for a rotary evaporation system according to claim 1, characterized in that, The distillation flask conveying mechanism includes a distillation flask loading mechanism and a distillation flask unloading mechanism.

7. The distillation flask loading and unloading device for a rotary evaporation system according to claim 1, characterized in that, The distillation flask fixing assembly includes a magnetic element disposed on the distillation flask tray.

8. The distillation flask loading and unloading device for a rotary evaporation system according to claim 7, characterized in that, The magnetic component is an electromagnet.

9. The distillation flask loading and unloading device for a rotary evaporation system according to any one of claims 1-4 and 6-8, characterized in that, It also includes a distillation flask; the distillation flask has a mouth-joining surface, which is a frosted surface.

10. A rotary evaporation system, characterized in that, Includes a rotary evaporator and a distillation flask loading and unloading device for a rotary evaporation system as described in any one of claims 1 to 9.

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