Rotary evaporation device for organic synthesis

Abstract

The utility model relates to the technical field of synthesis equipment, and discloses a rotary evaporation device for organic synthesis, which comprises a base, a mounting rack and a water bath kettle are fixedly mounted on the upper surface of the base, a condenser is arranged on the left upper side of the mounting rack, a first joint is embedded in the right lower side of the condenser, a movable plate is arranged on the right side of the mounting rack, and a second joint is embedded in the movable plate. A lifting adjusting assembly is arranged between the mounting frame and the movable plate. According to the water bath kettle, the lifting adjusting assembly is arranged, the second servo motor is used for driving the vertical lead screw to rotate, the movable plate can be driven to ascend and descend, when the movable plate is arranged at a high position, the installation work of the distillation flask is completed, the installation action is simple and convenient, and then the movable plate is driven to move downwards, so that the distillation flask is arranged in the water bath kettle; the water bath kettle is used for heating the distillation flask, and in the rotary heating process of the distillation flask, the movable plate shields the upper end face of the water bath kettle, so that water is prevented from being splashed out, and the purpose of protecting a user is achieved.

Description

Technical Field

[0001] This utility model relates to the field of synthetic equipment technology, and more specifically to a rotary evaporator for organic synthesis. Background Technology

[0002] A rotary evaporator, also known as a rotary evaporator, is a commonly used laboratory device mainly composed of a motor, a distillation flask, a water bath, and a condenser. During use, the water bath heats the distillation flask, and the motor drives the distillation flask to rotate continuously during the heating process.

[0003] A search revealed an existing patent (publication number: CN211158640U) that discloses a high-speed rotary evaporator. During use, a secondary gear and a main gear drive the distillation flask to rotate at high speed, preventing the conduit from rotating and thus improving the stability of the flask during rotation. This also prevents the conduit from breaking during rotation. Furthermore, placing the flask within the distillation chamber prevents water from splashing out of the water bath and injuring the operator, improving safety. However, the inventors discovered the following problems with the existing technology during the development of this invention: While the aforementioned high-speed rotary evaporator places the distillation flask inside the chamber to prevent water from splashing out of the water bath and causing injury, the narrow internal space makes operation difficult and hinders portability.

[0004] In view of this, the present invention proposes a rotary evaporation apparatus for organic synthesis to solve this problem. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a rotary evaporation apparatus for organic synthesis to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a rotary evaporator for organic synthesis, including a base, an mounting frame and a water bath are fixedly mounted on the upper surface of the base, a condenser is provided on the upper left of the mounting frame, a first connector is embedded in the lower right of the condenser, a movable plate is provided on the right side of the mounting frame, a lifting adjustment component is provided between the mounting frame and the movable plate, a clamping sleeve is rotatably connected to the surface of the movable plate, a first servo motor for driving the clamping sleeve to rotate is fixedly mounted on the front of the movable plate, a distillation flask is provided inside the clamping sleeve, the distillation flask is located directly above the water bath, a rotary connector is plugged into the top of the distillation flask, a second connector is fixedly connected to the rotating part of the rotary connector, and the first connector and the second connector are connected by a high-temperature resistant hose;

[0007] The lifting and adjusting assembly includes a vertical lead screw rotatably connected to the right side wall of the mounting frame, and a second servo motor that drives the vertical lead screw to rotate is fixedly installed on the surface of the mounting frame. A movable plate is threadedly connected to the surface of the vertical lead screw. When the movable plate is at its lowest position, the distillation flask is placed inside the water bath, and the movable plate blocks the upper opening of the water bath.

[0008] As a further description of the above technical solution: a negative pressure connector is embedded in the upper left of the condenser, which is connected to an external negative pressure pipeline. A condensing coil is installed inside the condenser, and both the inlet and outlet ends of the condensing coil extend to the left side of the condenser and are connected to an external cold water circulation pipeline. A distillation tube is embedded at the bottom of the condenser, and a collection bottle is installed on the left side of the mounting bracket, which is connected to the bottom end of the distillation tube. During the process of heating the distillation flask using a water bath, the gaseous components enter the condenser through a high-temperature resistant hose, liquefy upon contact with the condensing coil, and then collect in the collection bottle through the distillation tube, thus completing the purpose of distillation collection.

[0009] As a further description of the above technical solution: a limiting slide rod is fixedly installed on the right side wall of the mounting frame, and the movable plate is slidably connected to the limiting slide rod; by setting the limiting slide rod, the movement path of the movable plate can be restricted, ensuring the stability of the movable plate when it moves up and down.

[0010] As a further description of the above technical solution: the condenser is detachably mounted on the surface of the mounting bracket. The front of the mounting bracket is threadedly connected to a first clamping screw, and the threaded end of the first clamping screw is rotatably connected to a first rubber clamp for clamping the condenser. When installing the condenser, the condenser is placed on the inner wall of the mounting bracket. By rotating the first clamping screw, the first rubber clamp is driven to press against the outer wall of the condenser, thus completing the installation of the condenser. This facilitates the disassembly and cleaning of the condenser after use.

[0011] As a further description of the above technical solution: the surface of the mounting bracket is provided with a clearance opening corresponding to the high-temperature resistant hose.

[0012] As a further description of the above technical solution: the movable plate has an annular transmission cavity inside, the output shaft of the second servo motor extends into the annular transmission cavity and is fixedly installed with a worm gear, and a worm wheel ring is fixedly installed on the outer ring surface of the clamping sleeve, with the worm gear meshing with the worm wheel ring; by setting the worm gear and the worm wheel ring, the purpose of transmitting power between the second servo motor and the clamping sleeve can be achieved.

[0013] As a further description of the above technical solution: the distillation flask is detachably installed on the inner wall of the clamping sleeve, and a second clamping screw is threadedly connected to the surface of the clamping sleeve. The threaded end of the second clamping screw is rotatably connected to a second rubber clamp for clamping the distillation flask. When installing the distillation flask, the neck of the distillation flask is inserted into the clamping sleeve, and by rotating the second clamping screw, the second rubber clamp is driven to press against the outer wall of the distillation flask, which facilitates the installation of the distillation flask.

[0014] As a further description of the above technical solution: two stop bars are fixedly installed on the top of the movable plate to limit the rotation angle of the second connector. The two stop bars are located on the front and rear sides of the second connector, respectively. By setting the stop bars, the second connector can be limited, thereby preventing the second connector from causing excessive traction on the high-temperature hose during the rotation of the rotary connector.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. Compared with existing technologies, this rotary evaporator for organic synthesis places the raw material inside a distillation flask. By setting up a lifting and adjusting component, a second servo motor drives a vertical lead screw to rotate, which in turn drives a movable plate to rise and fall. When the movable plate is in the high position, the upper end of the distillation flask is inserted into the clamping sleeve and positioned, completing the installation of the distillation flask. The installation action is simple and convenient. Subsequently, by driving the movable plate to move down, the distillation flask is placed inside a water bath. The water bath is used to heat the distillation flask. The first servo motor drives the clamping sleeve and the distillation flask to rotate, achieving the purpose of rotary heating. During the rotary heating process, the movable plate shields the upper surface of the water bath, thereby preventing water from splashing out and achieving the purpose of protecting the user.

[0017] 2. Compared with existing technologies, during the heating of the distillation flask using a water bath, the gaseous components enter the condenser through a high-temperature resistant hose, liquefy upon contact with the condensing coil, and then collect in the collection bottle through the distillation outlet tube, completing the distillation collection. By setting a limiting slide bar, the movement path of the movable plate can be restricted, ensuring stability during its lifting and lowering. When installing the condenser, it is placed on the inner wall of the mounting frame, and the first clamping screw is rotated to drive the first rubber clamp to press against the outer wall of the condenser, thus completing the installation and facilitating disassembly and cleaning after use. The worm gear and worm wheel ring enable the transmission connection between the second servo motor and the clamping sleeve. When installing the distillation flask, the neck of the flask is inserted into the clamping sleeve, and the second clamping screw is rotated to drive the second rubber clamp to press against the outer wall of the flask, facilitating installation. A stop bar limits the movement of the second connector, preventing excessive traction on the high-temperature resistant hose during rotation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a partially cut-away three-dimensional structural diagram of the present invention;

[0020] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 for Figure 2 Enlarged structural diagram at point B.

[0022] The attached diagram is labeled as follows: 1. Base; 2. Mounting bracket; 3. Water bath; 4. Condenser; 5. First connector; 6. Movable plate; 7. Clamping sleeve; 8. First servo motor; 9. Distillation flask; 10. Rotary joint; 11. Second connector; 12. High-temperature resistant hose; 13. Vertical lead screw; 14. Second servo motor; 15. Negative pressure connector; 16. Condensing coil; 17. Distillation tube; 18. Collection bottle; 19. Limiting slide bar; 20. First clamping screw; 21. First rubber clamp; 22. Clearance opening; 23. Worm gear; 24. Worm wheel ring; 25. Second clamping screw; 26. Second rubber clamp; 27. Stop bar. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The rotary evaporator for organic synthesis involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1 to 4 This utility model provides a rotary evaporator for organic synthesis. The entire evaporator is connected to an external power control system, and the start and stop of the electrical equipment in the entire device are controlled by an external controller. It includes a base 1, a mounting bracket 2 and a water bath 3 are fixedly installed on the upper surface of the base 1, and a condenser 4 is provided on the upper left of the mounting bracket 2.

[0025] The condenser 4 is detachably mounted on the surface of the mounting bracket 2. The front of the mounting bracket 2 is threadedly connected to a first clamping screw 20, and the threaded end of the first clamping screw 20 is rotatably connected to a first rubber clamp 21 for clamping the condenser 4.

[0026] It is worth noting that when installing the condenser 4, the condenser 4 is placed on the inner wall of the mounting bracket 2, and the first clamping screw 20 is rotated to drive the first rubber clamp 21 to press against the outer wall of the condenser 4, thus completing the installation of the condenser 4. The installation action is simple and convenient for disassembling and cleaning the condenser 4 after use.

[0027] The first connector 5 is embedded in the lower right of the condenser 4, and a movable plate 6 is provided on the right side of the mounting bracket 2. A clamping sleeve 7 is rotatably connected to the surface of the movable plate 6.

[0028] The first servo motor 8, which drives the clamping sleeve 7 to rotate, is fixedly installed on the front of the movable plate 6.

[0029] The movable plate 6 has an annular transmission cavity inside. The output shaft of the second servo motor 14 extends into the annular transmission cavity and is fixedly installed with a worm gear 23. The outer ring surface of the clamping sleeve 7 is fixedly installed with a worm wheel ring 24, and the worm gear 23 meshes with the worm wheel ring 24.

[0030] It is worth noting that by setting the worm gear 23 and the worm ring 24, the purpose of driving the second servo motor 14 and the clamping sleeve 7 can be achieved.

[0031] The clamping sleeve 7 has a distillation flask 9 inside.

[0032] The distillation flask 9 is detachably mounted on the inner wall of the clamping sleeve 7. The surface of the clamping sleeve 7 is threaded with a second clamping screw 25, and the threaded end of the second clamping screw 25 is rotatably connected to a second rubber clamp 26 for clamping the distillation flask 9.

[0033] It is worth noting that when installing the distillation flask 9, the neck of the distillation flask 9 is inserted into the clamping sleeve 7, and the second clamping screw 25 is rotated to drive the second rubber clamp 26 to press against the outer wall of the distillation flask 9, which facilitates the installation of the distillation flask 9.

[0034] The distillation flask 9 is located directly above the water bath 3. The top of the distillation flask 9 is fitted with a rotary joint 10. The rotating part of the rotary joint 10 is fixedly connected to a second joint 11. The first joint 5 and the second joint 11 are connected by a high-temperature resistant hose 12. The surface of the mounting bracket 2 is provided with an avoidance opening 22 corresponding to the high-temperature resistant hose 12.

[0035] A negative pressure connector 15 is embedded in the upper left of the condenser 4. The negative pressure connector 15 is connected to the external negative pressure pipe. A condensing coil 16 is installed inside the condenser 4. The water inlet and outlet of the condensing coil 16 extend to the left side of the condenser 4 and are connected to the external cold water circulation pipe. A distillation tube 17 is embedded in the bottom of the condenser 4. A collection bottle 18 is installed on the left side of the mounting bracket 2. The collection bottle 18 is connected to the bottom of the distillation tube 17.

[0036] It is worth noting that in this rotary evaporator for organic synthesis, the raw material is placed inside the distillation flask 9. During the heating of the distillation flask 9 using the water bath 3, the gaseous components enter the condenser 4 through the high-temperature resistant hose 12, liquefy after contacting the surface of the condenser coil 16, and then collect in the collection bottle 18 through the distillation tube 17, thus completing the purpose of collecting the distilled components.

[0037] Two stop bars 27 are fixedly installed on the top of the movable plate 6 to limit the rotation angle of the second connector 11. The two stop bars 27 are located on the front and rear sides of the second connector 11, respectively.

[0038] It is worth noting that by setting the stop bar 27, the second connector 11 can be limited, thereby preventing the second connector 11 from causing excessive traction on the high-temperature hose 12 during the rotation of the rotary connector 10.

[0039] A lifting and adjusting assembly is provided between the mounting bracket 2 and the movable plate 6.

[0040] The lifting and adjusting assembly includes a vertical lead screw 13 rotatably connected to the right side wall of the mounting frame 2, and a second servo motor 14 that drives the vertical lead screw 13 to rotate is fixedly mounted on the surface of the mounting frame 2. The movable plate 6 is threadedly connected to the surface of the vertical lead screw 13. When the movable plate 6 is at its lowest position, the distillation flask 9 is placed inside the water bath 3, and the movable plate 6 blocks the upper opening of the water bath 3.

[0041] This rotary evaporator for organic synthesis, by setting up a lifting adjustment component, uses a second servo motor 14 to drive the vertical lead screw 13 to rotate, which in turn drives the movable plate 6 to rise and fall. When the movable plate 6 is in the high position, the upper end of the distillation flask 9 is inserted into the clamping sleeve 7 and positioned, completing the installation of the distillation flask 9. The installation action is simple and convenient. Then, by driving the movable plate 6 to move down, the distillation flask 9 is placed inside the water bath 3, and the water bath 3 is used to heat the distillation flask 9. The first servo motor 8 drives the clamping sleeve 7 and the distillation flask 9 to rotate, achieving the purpose of rotary heating. During the rotary heating process, the movable plate 6 shields the upper surface of the water bath 3, thereby preventing water from splashing out and achieving the purpose of protecting the user.

[0042] A limiting slide rod 19 is fixedly installed on the right side wall of the mounting bracket 2, and the movable plate 6 is slidably connected to the limiting slide rod 19.

[0043] It is worth noting that by setting the limit slide bar 19, the movement path of the movable plate 6 can be restricted, ensuring the stability of the movable plate 6 when it moves up and down.

[0044] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A rotary evaporator for organic synthesis, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly mounted with a mounting bracket (2) and a water bath (3). A condenser (4) is provided on the upper left of the mounting bracket (2). A first connector (5) is embedded in the lower right of the condenser (4). A movable plate (6) is provided on the right side of the mounting bracket (2). A lifting adjustment component is provided between the mounting bracket (2) and the movable plate (6). A clamping sleeve (7) is rotatably connected to the surface of the movable plate (6). A first servo motor (8) for driving the clamping sleeve (7) to rotate is fixedly mounted on the front of the movable plate (6). A distillation flask (9) is provided inside the clamping sleeve (7). The distillation flask (9) is located directly above the water bath (3). A rotary connector (10) is plugged into the top of the distillation flask (9). A second connector (11) is fixedly connected to the rotating part of the rotary connector (10). The first connector (5) and the second connector (11) are connected by a high-temperature resistant hose (12). The lifting adjustment assembly includes a vertical lead screw (13) rotatably connected to the right side wall of the mounting frame (2), and a second servo motor (14) that drives the vertical lead screw (13) to rotate is fixedly installed on the surface of the mounting frame (2). The movable plate (6) is threadedly connected to the surface of the vertical lead screw (13). When the movable plate (6) is at its lowest position, the distillation flask (9) is placed inside the water bath (3), and the movable plate (6) covers the upper opening of the water bath (3).

2. The rotary evaporator for organic synthesis according to claim 1, characterized in that: A negative pressure connector (15) is embedded in the upper left of the condenser (4). The negative pressure connector (15) is connected to the external negative pressure pipe. A condensing coil (16) is installed inside the condenser (4). The water inlet and outlet of the condensing coil (16) extend to the left side of the condenser (4) and are connected to the external cold water circulation pipe. A distillation tube (17) is embedded at the bottom of the condenser (4). A collection bottle (18) is installed on the left side of the mounting bracket (2). The collection bottle (18) is connected to the bottom of the distillation tube (17).

3. The rotary evaporator for organic synthesis according to claim 1, characterized in that: A limiting slide rod (19) is fixedly installed on the right side wall of the mounting bracket (2), and the movable plate (6) is slidably connected to the limiting slide rod (19).

4. A rotary evaporator for organic synthesis according to claim 1, characterized in that: The condenser (4) is detachably mounted on the surface of the mounting bracket (2). The front of the mounting bracket (2) is threadedly connected to a first clamping screw (20), and the threaded end of the first clamping screw (20) is rotatably connected to a first rubber clamp (21) for clamping the condenser (4).

5. A rotary evaporator for organic synthesis according to claim 1, characterized in that: The surface of the mounting bracket (2) is provided with an avoidance opening (22) corresponding to the high temperature resistant hose (12).

6. A rotary evaporator for organic synthesis according to claim 1, characterized in that: The movable plate (6) has an annular transmission cavity inside. The output shaft of the second servo motor (14) extends into the annular transmission cavity and is fixedly installed with a worm (23). The outer ring surface of the clamping sleeve (7) is fixedly installed with a worm wheel ring (24). The worm (23) meshes with the worm wheel ring (24).

7. A rotary evaporator for organic synthesis according to claim 1, characterized in that: The distillation flask (9) is detachably mounted on the inner wall of the clamping sleeve (7). The surface of the clamping sleeve (7) is threadedly connected to a second clamping screw (25), and the threaded end of the second clamping screw (25) is rotatably connected to a second rubber clamp (26) for clamping the distillation flask (9).

8. A rotary evaporator for organic synthesis according to claim 1, characterized in that: The top of the movable plate (6) is fixedly equipped with two stop bars (27) for limiting the rotation angle of the second connector (11), and the two stop bars (27) are located on the front and rear sides of the second connector (11) respectively.

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