Novel rotary evaporator

Abstract

The utility model discloses a novel rotary evaporator, which relates to the technical field of experimental equipment and comprises a base and a receiving bottle. A heating pot is fixedly connected to one side of the upper end of the base, a rotary evaporator body is fixedly connected to the middle of the upper end of the base, a rotating rod is rotatably connected to one side of the rotary evaporator body, and a first constraint structure is fixedly connected to the side, close to the heating pot, of the rotating rod and comprises a connecting block structure; a plurality of limiting structures are fixedly connected to the middle of the connecting block structure, a distillation flask is in threaded connection with an inner cavity of the rotating rod, and a condenser is fixedly connected to the side, away from the first constraint structure, of the rotating rod. According to the utility model, through the cooperation of the connecting block structure and the limiting structure, the positions of the clamping block structures can be limited, and then through the cooperation of the plurality of clamping block structures, the joints of distillation flasks with different sizes and the rotating rod can be restrained, so that the flexibility and universality of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a novel rotary evaporator. Background Art

[0002] Rotary evaporator, also known as rotary evaporator, is a laboratory equipment widely used in chemistry, chemical industry, biomedicine and other fields. Its basic principle is to use the dual effects of heating and decompression to evaporate the volatile substances in the liquid sample, and cool and collect them for recovery through the condenser.

[0003] The sizes of the connection ports of traditional evaporators often adopt a unified standard. Although this design facilitates production and interchangeability to a certain extent, it limits the applicability of the evaporator to distillation flasks of different sizes. In actual applications, due to different experimental requirements, the size and shape of the distillation flask may also vary. The fixed-size connection port cannot meet the connection requirements of distillation flasks of different specifications, which undoubtedly limits the flexibility and versatility of the evaporator.

[0004] Chinese patent document CN208865198U discloses a novel anti-backflow rotary evaporator, including a measuring tube, a receiving port, an adjustment plate, a supporting base, an auxiliary rotating chamber, an evaporation sphere, an anti-backflow bearing, and a control panel. The measuring tube is a cylindrical structure with a circular cross-section and a radius of 5cm-6cm. The side of the receiving port and the outer ring of the left tail end of the anti-backflow bearing are movably connected by interference fit, and the connection between the two is tightly fitted without a gap; however, the following defects still exist during implementation:

[0005] Although the device in the above document solves the problem of the equipment having excess force to promote reverse rotation when it stops, during the use of the device in the above document, the connection between the evaporator and the distillation flask cannot be adapted to distillation flasks of different sizes, thereby limiting the flexibility and versatility of the evaporator. Utility Model Content

[0006] The purpose of the utility model is to provide a novel rotary evaporator to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A novel rotary evaporator comprises a base and a receiving bottle; a heating pot is fixedly connected to one side of the upper end of the base, a rotary evaporator body is fixedly connected to the middle of the upper end, a rotating rod is rotatably connected to one side of the rotary evaporator body, a first constraint structure is fixedly connected to the side of the rotating rod close to the heating pot, the first constraint structure comprises a connecting block structure, a clamping block structure is symmetrically and slidably connected to the middle of the connecting block structure, a plurality of limiting structures are fixedly connected to the middle of the connecting block structure, a distillation bottle is threadedly connected to the inner cavity of the rotating rod, a condenser is fixedly connected to the side of the rotating rod away from the first constraint structure, a bracket structure is fixedly connected to the side of the upper end of the base away from the heating pot, and the upper end of the receiving bottle contacts the lower end of the condenser.

[0009] A further improvement of the technical solution of the utility model is that the connecting block structure includes a fixed block, a side of the fixed block close to the rotating rod is fixedly connected to the rotating rod, a side of the fixed block close to the distillation flask is provided with a slide groove, and a plurality of connecting grooves are provided in the inner cavity of the fixed block.

[0010] The above-mentioned technical solution is adopted, in which the fixed block is connected to the rotating rod, so that the connecting block structure can be used to support and connect the entire first constraint structure, and a slide groove is opened on the side of the fixed block close to the distillation flask, so that the moving trajectory of the block structure can be limited by the slide groove, thereby preventing the block structure from getting off the track during the movement.

[0011] A further improvement of the technical solution of the utility model is that the clamping block structure includes a clamping block, a side of the clamping block close to the limiting structure is provided with a plurality of limiting grooves, a side of the clamping block close to the distillation flask is provided with a V-shaped groove, and the clamping block is symmetrically fixedly connected with a slider.

[0012] The above-mentioned technical solution is adopted, in which a number of limit grooves are opened on the clamping block, so that the position of the clamping block structure in the inner cavity of the connecting block structure can be limited by the limit structure, so that the clamping block structure can constrain the contact point between distillation flasks of different sizes and the rotating rod, preventing the distillation flask from shaking or even detaching from the device when the device is running, thereby affecting the experiment.

[0013] A further improvement of the technical solution of the utility model is that the sliding block is T-shaped, and the outer surface of the sliding block on the same side is slidably connected with an inner cavity of the sliding groove.

[0014] The above technical solution is adopted, in which the slider and the slide groove cooperate with each other, so that the slider can be used to support and limit the clamping block.

[0015] A further improvement of the technical solution of the utility model is that the limiting structure includes a shell, the outer surface of the shell with the same center is fixedly connected to the inner cavity of the connecting groove, the inner cavity of the shell is slidably connected with a protrusion, and one end of the protrusion close to the bottom wall of the inner cavity of the shell is fixedly connected to the bottom wall of the inner cavity of the shell with a spring.

[0016] The above technical solution is adopted, in which the elastic force of the spring is used to push the protrusion to slide in the inner cavity of the shell, so that the position of the block structure can be limited by the cooperation of the protrusion and a number of limit grooves, so that the block structure can restrain distillation flasks of different sizes.

[0017] A further improvement of the technical solution of the utility model is that an annular groove is provided on the side of the rotating rod close to the distillation flask, an annular block is fixedly connected to the inner cavity of the annular groove, a sealing block is fixedly connected to the inner cavity of the annular block, a second constraint block is fixedly connected to the side of the inner cavity of the rotating rod close to the distillation flask, and the inner cavity of the second constraint block is provided with a thread.

[0018] The above technical solution is adopted, in which a thread is arranged in the inner cavity of the second constraint block, so that the matching distillation flask can be threadedly connected, thereby achieving a tighter fixation. At the same time, the thread on the second constraint block can be used to enhance the friction force at the connection between the inner cavity of the second constraint block and distillation flasks of different sizes, and the sealing block is fixedly connected through the inner cavity of the annular block, thereby ensuring that the connection between the distillation flask and the rotating rod has good sealing performance.

[0019] A further improvement of the technical solution of the utility model is that: the bracket structure includes a frame seat, the lower end of the frame seat is fixedly connected to the upper end of the base, the upper end of the frame seat is fixedly connected to a motor, the output end of the motor passes through the upper end of the frame seat and extends to the inner cavity of the frame seat, the inner cavity of the frame seat is rotatably connected with a two-way threaded rod, the output end of the motor is fixedly connected to the upper end of the two-way threaded rod, the lower end of the two-way threaded rod is rotatably connected to the upper end of the base, the inner cavity of the frame seat is fixedly connected with a guide rod, the upper part of the outer surface of the two-way threaded rod is threadedly connected to a support block two, the lower part of the outer surface of the two-way threaded rod is threadedly connected to a support block one, the guide rod is slidably connected to the support block two, the guide rod is slidably connected to the support block one, the inner cavity of the support block two is in contact with the outer surface of the condenser, and the upper end of the support block one is in contact with the lower part of the outer surface of the receiving bottle.

[0020] The above technical solution is adopted, in which the motor can drive the frame to rotate, and then the frame is used to mobilize support block two and support block one to rise and fall, so that the distance between support block two and support block one can be adjusted, and the support structure can be suitable for condensers and receiving bottles of different heights, so that the support structure can support and connect the condenser and the receiving bottle, thereby reducing the connection and support strength of the rotating rod.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a novel rotary evaporator, which can limit the position of the block structure by cooperating with the connecting block structure and the limiting structure, and then utilize the cooperation of several block structures to constrain the connection between the distillation flask and the rotating rod of different sizes, thereby improving the flexibility and versatility of the device.

[0023] 2. The utility model provides a novel rotary evaporator. By arranging threads in the inner cavity of the second constraint block, the threads can be used to enhance the friction between the connection between the rotating rod and the distillation flask of other sizes, and the threads can be used to make the rotating rod and the matching distillation flask tightly engage with each other, which can effectively prevent the distillation flask from falling off or loosening due to vibration or improper operation during the rotary evaporation process. The condenser and the receiving bottle can be supported and connected by the bracket structure, thereby dispersing and reducing the strength requirements of the rotating rod in terms of support and connection, so that it does not need to bear too much load-bearing or supporting tasks, so that it can focus more on the close connection and stable rotation with the distillation flask, which not only improves the stability and reliability of the overall structure, but also helps to extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the first constraint structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the connection block structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the card block structure of the utility model;

[0029] Figure 5 It is a schematic diagram of the limiting structure of the utility model;

[0030] Figure 6 It is a schematic diagram of the rotating rod of the utility model;

[0031] Figure 7 This is a schematic diagram of the support structure of the utility model;

[0032] In the figure: 1. base; 2. heating pot; 3. distillation flask; 4. rotary evaporator body; 5. first constraint structure; 51. connecting block structure; 511. fixing block; 512. slide groove 1; 513. connecting groove; 52. block structure; 521. clamping block; 522. limiting groove; 523. V-shaped groove; 524. slider; 53. limiting structure; 531. shell; 532. spring; 533. protrusion; 6. rotating rod; 61. annular groove; 62. annular block; 63. sealing block; 64. second constraint block; 7. bracket structure; 71. bracket; 72. motor; 73. bidirectional threaded rod; 74. guide rod; 75. support block 1; 76. support block 2; 8. condenser; 9. receiving bottle. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the embodiments:

[0034] Example 1

[0035] like Figure 1-7 As shown, the utility model provides a novel rotary evaporator, including a base 1 and a receiving bottle 9; a heating pot 2 is fixedly connected to one side of the upper end of the base 1, a rotary evaporator body 4 is fixedly connected to the middle of the upper end, a rotating rod 6 is rotatably connected to one side of the rotary evaporator body 4, a first constraint structure 5 is fixedly connected to the side of the rotating rod 6 close to the heating pot 2, the first constraint structure 5 includes a connecting block structure 51, a card block structure 52 is symmetrically slidably connected to the middle of the connecting block structure 51, a plurality of limiting structures 53 are fixedly connected to the middle of the connecting block structure 51, a distillation flask 3 is threadedly connected to the inner cavity of the rotating rod 6, a condenser 8 is fixedly connected to the side of the rotating rod 6 away from the first constraint structure 5, a bracket structure 7 is fixedly connected to the side of the upper end of the base 1 away from the heating pot 2, and the upper end of the receiving bottle 9 is in contact with the lower end of the condenser 8.

[0036] In this embodiment, the entire device is supported by the base 1, the distillation flask 3 can be evaporated by the heating pot 2, the distillation flask 3 can be driven to rotate by the cooperation of the rotary evaporator body 4 and the rotating rod 6, the distillation flask 3 of different sizes can be constrained by the cooperation of the block structure 52 and the limiting structure 53, the condenser 8 and the receiving bottle 9 can be supported and connected by the bracket structure 7, the solvent vapor distilled from the distillation flask 3 can be condensed by the condenser 8, and the condensed water can be collected by the receiving bottle 9.

[0037] Example 2

[0038] like Figure 6As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, an annular groove 61 is provided on the side of the rotating rod 6 close to the distillation flask 3, an annular block 62 is fixedly connected to the inner cavity of the annular groove 61, a sealing block 63 is fixedly connected to the inner cavity of the annular block 62, a second constraint block 64 is fixedly connected to the inner cavity of the rotating rod 6 close to the distillation flask 3, and the inner cavity of the second constraint block 64 is provided with a thread.

[0039] In this embodiment, the solution to be evaporated is injected into the inner cavity of the distillation flask 3, and then the distillation flask 3 is clamped with the rotating rod 6. During the clamping process, the friction between the second constraint block 64 and the distillation flask 3 is strengthened by the thread in the inner cavity of the second constraint block 64, and the mouth of the distillation flask 3 is blocked by the sealing block 63, thereby improving the sealing of the contact between the distillation flask 3 and the rotating rod 6.

[0040] Example 3

[0041] like Figure 3 , Figure 4 , Figure 5 As shown, on the basis of Example 2, the utility model provides a technical solution: preferably, the connecting block structure 51 includes a fixed block 511, the side of the fixed block 511 close to the rotating rod 6 is fixedly connected to the rotating rod 6, the side of the fixed block 511 close to the distillation flask 3 is provided with a slide groove 512, the inner cavity of the fixed block 511 is provided with a plurality of connecting grooves 513, the clamping block structure 52 includes a clamping block 521, the side of the clamping block 521 close to the limiting structure 53 is provided with a plurality of limiting grooves 522, the clamping block 521 close to the distillation flask 3 is provided with a plurality of connecting grooves 513, A V-shaped groove 523 is provided on one side of the bottle 3, and the clamping block 521 is symmetrically fixedly connected with a slider 524, the slider 524 is T-shaped, and the outer surface of the slider 524 on the same side is slidably connected to the inner cavity of the slide groove 512. The limiting structure 53 includes a shell 531, and the outer surface of the shell 531 with the same center is fixedly connected to the inner cavity of the connecting groove 513. The inner cavity of the shell 531 is slidably connected with a protrusion 533, and one end of the protrusion 533 close to the bottom wall of the inner cavity of the shell 531 is fixedly connected to the bottom wall of the inner cavity of the shell 531 with a spring 532.

[0042] In this embodiment, the staff then pushes the clamp 521 to allow the slider 524 and the clamp 521 to slide in the inner cavity of the slide groove 512, and uses the V-shaped groove 523 to fix the position of the connection between the distillation flask 3 and the rotating rod 6. At the same time, the elastic force of the spring 532 is used to push the protrusion 533 to move in the inner cavity of the shell 531 toward the clamp 521, so that the position of the clamp 521 can be limited by the cooperation of the protrusion 533 and a plurality of limit grooves 522.

[0043] Example 4

[0044] like Figure 7As shown, on the basis of Example 3, the utility model provides a technical solution: preferably, the bracket structure 7 includes a frame seat 71, the lower end of the frame seat 71 is fixedly connected to the upper end of the base 1, the upper end of the frame seat 71 is fixedly connected to a motor 72, the output end of the motor 72 passes through the upper end of the frame seat 71 and extends to the inner cavity of the frame seat 71, the inner cavity of the frame seat 71 is rotatably connected with a bidirectional threaded rod 73, the output end of the motor 72 is fixedly connected to the upper end of the bidirectional threaded rod 73, the lower end of the bidirectional threaded rod 73 is rotatably connected to the upper end of the base 1, the inner cavity of the frame seat 71 is fixedly connected with a guide rod 74, the upper part of the outer surface of the bidirectional threaded rod 73 is threadedly connected to a support block 2 76, the lower part of the outer surface of the bidirectional threaded rod 73 is threadedly connected to a support block 1 75, the guide rod 74 is slidably connected to the support block 2 76, the guide rod 74 is slidably connected to the support block 1 75, the inner cavity of the support block 2 76 contacts the outer surface of the condenser 8, and the upper end of the support block 1 75 contacts the lower part of the outer surface of the receiving bottle 9.

[0045] In this embodiment, the condenser 8 is then engaged with the receiving bottle 9, and the motor 72 is operated at the same time. The output end of the motor 72 is used to drive the bidirectional threaded rod 73 to rotate, thereby driving the support block 1 75 and the support block 2 76 to move, so that the support block 2 76 can be used to connect and support the condenser 8, and the support block 1 75 can be used to support and connect the receiving bottle 9. After that, a proper amount of water is injected into the inner cavity of the heating pot 2 and then heated. The heated water will heat the liquid inside the distillation flask 3 in a water bath. At the same time, the rotary evaporator body 4 will drive the rotating rod 6 to rotate, thereby using the rotating rod 6 to drive the distillation flask 3 to rotate. The liquid generated after the liquid is heated will enter the condenser 8 through the rotating rod 6, and the steam will be condensed by the condenser 8, and the condensed liquid will flow into the receiving bottle 9.

[0046] The working principle of this new rotary evaporator is described in detail below.

[0047] like Figure 1-7 As shown, when the solvent needs to be evaporated, the solution to be evaporated is first injected into the inner cavity of the distillation flask 3, and then the distillation flask 3 is clamped with the rotating rod 6. During the clamping process, the friction between the second constraint block 64 and the distillation flask 3 is strengthened by the threads in the inner cavity of the second constraint block 64, and the bottle mouth of the distillation flask 3 is blocked by the sealing block 63, thereby improving the sealing performance of the contact between the distillation flask 3 and the rotating rod 6.

[0048] Then, the staff pushes the clamping block 521 to make the slider 524 and the clamping block 521 slide in the inner cavity of the slide groove 1 512, and fixes the position of the connection between the distillation flask 3 and the rotating rod 6 by using the V-shaped groove 523. At the same time, the elastic force of the spring 532 is used to push the protrusion 533 to move in the inner cavity of the shell 531 toward the clamping block 521, so that the position of the clamping block 521 can be limited by the cooperation of the protrusion 533 and the plurality of limiting grooves 522.

[0049] Then, the condenser 8 is engaged with the receiving bottle 9, and the motor 72 is operated at the same time. The output end of the motor 72 is used to drive the bidirectional threaded rod 73 to rotate, thereby driving the support block 1 75 and the support block 2 76 to move, so that the support block 2 76 can be used to connect and support the condenser 8, and the support block 1 75 can be used to support and connect the receiving bottle 9. After that, an appropriate amount of water is injected into the inner cavity of the heating pot 2 and then heated. The heated water will heat the liquid inside the distillation flask 3 in a water bath. At the same time, the rotary evaporator body 4 will drive the rotating rod 6 to rotate, thereby using the rotating rod 6 to drive the distillation flask 3 to rotate. The liquid generated after the liquid is heated will enter the condenser 8 through the rotating rod 6, and the steam will be condensed by the condenser 8, and the condensed liquid will flow into the receiving bottle 9.

[0050] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A novel rotary evaporator, comprising a base (1) and a receiving bottle (9); characterized in that: A heating pot (2) is fixedly connected to one side of the upper end of the base (1), a rotary evaporator body (4) is fixedly connected to the middle of the upper end, a rotating rod (6) is rotatably connected to one side of the rotary evaporator body (4), a first constraint structure (5) is fixedly connected to the side of the rotating rod (6) close to the heating pot (2), the first constraint structure (5) comprises a connecting block structure (51), a clamping block structure (52) is symmetrically slidably connected to the middle of the connecting block structure (51), a plurality of limiting structures (53) are fixedly connected to the middle of the connecting block structure (51), a distillation flask (3) is threadedly connected to the inner cavity of the rotating rod (6), a condenser (8) is fixedly connected to the side of the rotating rod (6) away from the first constraint structure (5), a bracket structure (7) is fixedly connected to the side of the upper end of the base (1) away from the heating pot (2), and the upper end of the receiving bottle (9) is in contact with the lower end of the condenser (8).

2. A novel rotary evaporator according to claim 1, characterized in that: The connecting block structure (51) comprises a fixed block (511), wherein the side of the fixed block (511) close to the rotating rod (6) is fixedly connected to the rotating rod (6), the side of the fixed block (511) close to the distillation flask (3) is provided with a slide groove 1 (512), and the inner cavity of the fixed block (511) is provided with a plurality of connecting grooves (513).

3. A novel rotary evaporator according to claim 1, characterized in that: The clamping block structure (52) comprises a clamping block (521), a side of the clamping block (521) close to the limiting structure (53) is provided with a plurality of limiting grooves (522), a side of the clamping block (521) close to the distillation flask (3) is provided with a V-shaped groove (523), and the clamping block (521) is symmetrically fixedly connected with a sliding block (524).

4. A novel rotary evaporator according to claim 3, characterized in that: The sliding block (524) is T-shaped, and the outer surface of the sliding block (524) on the same side is slidably connected to the inner cavity of the sliding groove (512).

5. A novel rotary evaporator according to claim 1, characterized in that: The limiting structure (53) comprises a shell (531), the outer surface of the shell (531) having the same center is fixedly connected to the inner cavity of the connecting groove (513), the inner cavity of the shell (531) is slidably connected to a protrusion (533), and one end of the protrusion (533) close to the bottom wall of the inner cavity of the shell (531) is fixedly connected to the bottom wall of the inner cavity of the shell (531) by a spring (532).

6. A novel rotary evaporator according to claim 1, characterized in that: The rotating rod (6) is provided with an annular groove (61) on the side close to the distillation flask (3), the inner cavity of the annular groove (61) is fixedly connected with an annular block (62), the inner cavity of the annular block (62) is fixedly connected with a sealing block (63), the inner cavity of the rotating rod (6) is fixedly connected with a second restraining block (64) on the side close to the distillation flask (3), and the inner cavity of the second restraining block (64) is provided with a thread.

7. A novel rotary evaporator according to claim 1, characterized in that: The support structure (7) comprises a support seat (71), the lower end of the support seat (71) is fixedly connected to the upper end of the base (1), the upper end of the support seat (71) is fixedly connected to a motor (72), the output end of the motor (72) passes through the upper end of the support seat (71) and extends to the inner cavity of the support seat (71), the inner cavity of the support seat (71) is rotatably connected to a bidirectional threaded rod (73), the output end of the motor (72) is fixedly connected to the upper end of the bidirectional threaded rod (73), the lower end of the bidirectional threaded rod (73) is rotatably connected to the upper end of the base (1), and the The inner cavity of the frame seat (71) is fixedly connected with a guide rod (74); the upper portion of the outer surface of the bidirectional threaded rod (73) is threadedly connected with a support block 2 (76); the lower portion of the outer surface of the bidirectional threaded rod (73) is threadedly connected with a support block 1 (75); the guide rod (74) is slidably connected to the support block 2 (76); the guide rod (74) is slidably connected to the support block 1 (75); the inner cavity of the support block 2 (76) contacts the outer surface of the condenser (8); the upper end of the support block 1 (75) contacts the lower portion of the outer surface of the receiving bottle (9).

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