Rotary evaporator

Abstract

The utility model belongs to the technical field of chemical equipment, and particularly relates to a rotary evaporator which comprises a rotary evaporation mechanism, a protective component and an air exhaust mechanism, the rotary evaporation mechanism comprises a base, a speed regulator, a water bath kettle and a flask, the speed regulator and the water bath kettle are arranged at the top of the base, and the flask is arranged on the front side of the speed regulator. The lower end of the flask is positioned in the water bath kettle; the protection part is arranged at the top of the water bath kettle and comprises a protection cover, an avoiding groove and an exhaust pipe, the avoiding groove corresponding to the flask in position is formed in the side edge of the protection cover, and the side edge of the protection cover is communicated with the exhaust pipe; the exhaust mechanism is connected with the exhaust pipe, the exhaust mechanism comprises an exhaust pipe and a negative pressure part, one end of the exhaust pipe is connected with the exhaust pipe, the other end of the exhaust pipe is connected with the negative pressure part, water vapor in the protective cover is extracted through the exhaust mechanism, and the situation that the water vapor is attached to the protective cover to block sight is avoided.

Description

Technical Field

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

[0002] The rotary evaporator is electronically controlled to make the flask rotate at a constant speed at the most suitable speed to increase the evaporation area. The evaporation flask is placed in a negative pressure state through a vacuum pump. The evaporation flask is placed in a water bath and heated at a constant temperature while rotating. The solution in the flask is heated and diffused in the rotating flask under negative pressure.

[0003] When a current rotary evaporator is heating, a cover is used to seal the water bath to increase the heating efficiency. However, during the heating process, the water in the water bath evaporates to produce water vapor, which adheres to the inside of the cover and becomes blurred and blocks the view, making it difficult to observe the internal heating status. Therefore, the present application proposes a rotary evaporator. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing rotary evaporators, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a rotary evaporator, which can extract the water vapor in the protective cover through the exhaust mechanism to prevent the water vapor from adhering to the protective cover and blocking the line of sight.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A rotary evaporator comprising:

[0009] A rotary evaporation mechanism comprises a base, a speed regulator, a water bath and a flask, wherein the speed regulator and the water bath are arranged on the top of the base, the flask is arranged on the front side of the speed regulator, and the lower end of the flask is located in the water bath;

[0010] A protective component is arranged on the top of the water bath, and the protective component includes a protective cover, an avoidance groove and an exhaust pipe. The side of the protective cover is provided with an avoidance groove corresponding to the position of the flask, and the side of the protective cover is connected to the exhaust pipe;

[0011] The air extraction mechanism is connected to the exhaust pipe, and the air extraction mechanism includes an air extraction pipe and a negative pressure component. One end of the air extraction pipe is connected to the exhaust pipe, and the other end of the air extraction pipe is connected to the negative pressure component.

[0012] As a preferred solution of the rotary evaporator described in the utility model, wherein: an annular convex ring is arranged on the top of the water bath pot, and the protective cover is nested on the annular convex ring.

[0013] As a preferred solution of a rotary evaporator described in the utility model, wherein: an axial hole is provided on the top of the protective cover, a thick tube is provided on the exhaust pipe, a rotating bracket is provided inside the thick tube, a defogger assembly is connected to the rotating bracket, and the defogger assembly includes a first rotating shaft, an impeller, a driving gear, a second rotating shaft, a driven gear and a defogger brush, the first rotating shaft is connected to the rotating bracket, one end of the first rotating shaft is provided with an impeller located in the thick tube, the other end of the first rotating shaft is provided with a driving gear located in the protective cover, the second rotating shaft is connected to the axial hole, a driven gear meshing with the driving gear is provided at the lower end of the second rotating shaft, and a defogger brush in contact with the inner wall of the protective cover is provided on the side wall of the second rotating shaft.

[0014] As a preferred solution of the rotary evaporator described in the utility model, a bellows is provided on the exhaust pipe.

[0015] As a preferred solution of the rotary evaporator described in the utility model, wherein: a heat insulation sleeve is arranged outside the exhaust pipe, and anti-slip convex patterns are arranged outside the heat insulation sleeve.

[0016] As a preferred solution of the rotary evaporator described in the utility model, wherein: the lower end of the demisting brush is higher than the pipe opening of the exhaust pipe.

[0017] As a preferred solution of the rotary evaporator described in the utility model, bearings are arranged between the rotating bracket and the first rotating shaft, and between the shaft hole and the second rotating shaft.

[0018] Compared with the prior art: the utility model arranges an exhaust pipe on the side of the protective cover, and the outer end of the exhaust pipe is connected to the exhaust mechanism. When water vapor is generated by water bath heating, the internal water vapor is extracted through the exhaust mechanism to avoid the water vapor adhering to the protective cover and blocking the line of sight, making it easy to observe the internal heating status. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 This is a schematic diagram of the shaft side structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the rotary evaporation mechanism of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal connection structure of the protective component of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the protective component of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the defogger assembly of the utility model.

[0025] In the figure: 100 rotary evaporation mechanism, 110 base, 120 speed regulator, 130 water bath, 131 annular convex ring, 140 flask, 200 protective component, 210 protective cover, 211 shaft hole, 220 avoidance groove, 230 exhaust pipe, 231 thick pipe, 240 rotating bracket, 300 exhaust mechanism, 310 exhaust pipe, 320 negative pressure component, 330 bellows, 400 defogger assembly, 410 first rotating shaft, 420 impeller, 430 driving gear, 440 second rotating shaft, 450 driven gear, 460 defogger brush. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The utility model provides a rotary evaporator, which extracts the water vapor in the protective cover through the exhaust mechanism to prevent the water vapor from adhering to the protective cover and blocking the line of sight. Figure 1-Figure 5 , including: a rotary evaporation mechanism 100, a protective component 200 and an exhaust mechanism 300.

[0031] The rotary evaporation mechanism 100 includes a base 110, a speed regulator 120, a water bath 130 and a flask 140. The speed regulator 120 and the water bath 130 are arranged on the top of the base 110, the flask 140 is arranged on the front side of the speed regulator 120, and the lower end of the flask 140 is located in the water bath 130;

[0032] Water is added to the water bath 130 to heat the water, and the bottom of the flask 140 is placed in the water for water bath heating.

[0033] The protective component 200 is arranged on the top of the water bath 130, and the protective component 200 includes a protective cover 210, an avoidance groove 220 and an exhaust pipe 230. The side of the protective cover 210 is provided with the avoidance groove 220 corresponding to the position of the flask 140, and the side of the protective cover 210 is connected to the exhaust pipe 230;

[0034] The protective cover 210 covers the top of the water bath 130. Since the flask 140 extends from the water bath 130 to the outside, an avoidance groove 220 is provided. The avoidance groove 220 is stuck on the outside of the bottleneck of the flask 140, so that the protective cover 210 can effectively cover the top of the water bath 130. The structure of the avoidance groove 220 is as follows: Figure 3 and Figure 4 As shown, the bottom is open. When connected to the flask 140, a gap is left between the avoidance groove 220 and the flask 140 to achieve ventilation. The air flow circulates through the exhaust pipe 230 to discharge the water vapor generated by heating.

[0035] The air extraction mechanism 300 is connected to the exhaust pipe 230. The air extraction mechanism 300 includes an air extraction pipe 310 and a negative pressure component 320. One end of the air extraction pipe 310 is connected to the exhaust pipe 230, and the other end of the air extraction pipe 310 is connected to the negative pressure component 320.

[0036] The negative pressure component 320 adopts a negative pressure pump, and the negative pressure component 320 extracts the water vapor inside the protective cover 210 through the exhaust pipe 310.

[0037] Since the protective cover 210 needs to be installed on the top of the water bath 130 for sealing, in order to facilitate installation and alignment, an annular convex ring 131 is provided on the top of the water bath 130, and the protective cover 210 is nested on the annular convex ring 131 to achieve a nested connection, which is convenient for disassembly and assembly.

[0038] Since the exhaust mechanism 300 extracts the water vapor to prevent the water vapor from adhering to the protective cover 210, it is still inevitable that some of the water vapor will adhere to the inner wall of the protective cover 210, and the hot air will condense into water droplets when encountering the protective cover 210, which still has a certain impact on the light transmittance of the protective cover 210. Therefore, an axial hole 211 is provided on the top of the protective cover 210, a thick pipe 231 is provided on the exhaust pipe 230, and a rotating bracket 240 is provided inside the thick pipe 231. The rotating bracket 240 is connected to the defogger assembly 400, and the defogger assembly 400 includes a first rotating shaft 410, an impeller 42 0, driving gear 430, second rotating shaft 440, driven gear 450 and defogger brush 460, the first rotating shaft 410 is connected to the rotating bracket 240, one end of the first rotating shaft 410 is provided with an impeller 420 located in the thick tube 231, the other end of the first rotating shaft 410 is provided with a driving gear 430 located in the protective cover 210, the second rotating shaft 440 is connected to the shaft hole 211, the lower end of the second rotating shaft 440 is provided with a driven gear 450 meshing with the driving gear 430, and the side wall of the second rotating shaft 440 is provided with a defogger brush 460 in contact with the inner wall of the protective cover 210;

[0039] When the exhaust mechanism 300 exhausts air, the airflow circulates through the exhaust pipe 230 and contacts the impeller 420. The impeller 420 drives the first rotating shaft 410 to rotate under the action of the airflow. The first rotating shaft 410 drives the second rotating shaft 440 to rotate through the driving gear 430 and the driven gear 450. The second rotating shaft 440 synchronously drives the defog brush 460 to rotate.

[0040] Since the protective cover 210 needs to be opened and closed for taking, if the exhaust pipe 310 cannot be extended or retracted, the movement of the protective cover 210 will be restricted. For this reason, a bellows 330 is provided on the exhaust pipe 310. When taking the protective cover 210, the bellows 330 can extend or retract with the protective cover 210, maintaining connectivity without affecting the taking of the protective cover 210.

[0041] Since the outside of the protective cover 210 is smooth, in order to facilitate taking the protective cover 210, an insulating sleeve is provided on the outside of the exhaust pipe 230, and the outside of the insulating sleeve is provided with anti-slip convex patterns. At this time, the exhaust pipe 230 is used as a handle, and the exhaust pipe 230 can be grasped to take the protective cover 210, and the insulating sleeve has the effect of heat insulation and anti-slip.

[0042] Since the first rotating shaft 410 is a horizontal rod and the defogger brush 460 needs to move in a circular motion, in order to avoid interference between the defogger brush 460 and the first rotating shaft, the lower end of the defogger brush 460 is higher than the pipe mouth of the exhaust pipe 230, so that the lower end of the defogger brush 460 is higher than the first rotating shaft 410, avoiding the defogger brush 460 from hitting the first rotating shaft 410 when rotating in a circular motion.

[0043] Since the impeller 420 needs to rotate under the drive of wind, if the friction resistance is large, the impeller 420 cannot be effectively driven to rotate. Therefore, bearings are provided between the rotating bracket 240 and the first rotating shaft 410 and between the shaft hole 211 and the second rotating shaft 440 to reduce the friction resistance of the movement.

[0044] During specific use, the bottom of the flask 140 is placed in the water bath 130 for water bath heating. During heating, the protective cover 210 shields and protects the top of the water bath 130 to prevent water splashing and scalding people. The water in the water bath 130 evaporates and produces water vapor when heated. The water vapor will adhere to the inside of the protective cover 210, affecting the light transmittance of the protective cover 210. At this time, the negative pressure component 320 extracts the water vapor inside the protective cover 210 through the exhaust pipe 310 to prevent the water vapor from adhering to the inner wall of the protective cover 210. When the exhaust mechanism 300 exhausts air, the air flow circulates through the exhaust pipe 230 and contacts the impeller 420. The impeller 420 drives the first rotating shaft 410 to rotate under the action of the air flow. The first rotating shaft 410 drives the second rotating shaft 440 to rotate through the driving gear 430 and the driven gear 450. The second rotating shaft 440 synchronously drives the defog brush 460 to rotate, so as to defog the upper inner side of the protective cover 210.

[0045] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rotary evaporator, characterized in that: include: A rotary evaporation mechanism (100) comprises a base (110), a speed regulator (120), a water bath (130) and a flask (140), wherein the speed regulator (120) and the water bath (130) are arranged on the top of the base (110), the flask (140) is arranged on the front side of the speed regulator (120), and the lower end of the flask (140) is located in the water bath (130); A protective component (200) is arranged on the top of the water bath (130), the protective component (200) comprising a protective cover (210), an avoidance groove (220) and an exhaust pipe (230), the side of the protective cover (210) is provided with an avoidance groove (220) corresponding to the position of the flask (140), and the side of the protective cover (210) is connected to the exhaust pipe (230); An air extraction mechanism (300) is connected to the exhaust pipe (230), and the air extraction mechanism (300) comprises an air extraction pipe (310) and a negative pressure component (320), wherein one end of the air extraction pipe (310) is connected to the exhaust pipe (230), and the other end of the air extraction pipe (310) is connected to the negative pressure component (320).

2. A rotary evaporator according to claim 1, characterized in that: The top of the water bath pot (130) is provided with an annular convex ring (131), and the protective cover (210) is nested on the annular convex ring (131).

3. A rotary evaporator according to claim 1, characterized in that: The top of the protective cover (210) is provided with an axial hole (211), the exhaust pipe (230) is provided with a thick pipe (231), a rotating bracket (240) is provided inside the thick pipe (231), a defogger assembly (400) is connected to the rotating bracket (240), and the defogger assembly (400) comprises a first rotating shaft (410), an impeller (420), a driving gear (430), a second rotating shaft (440), a driven gear (450) and a defogger brush (460), wherein the first rotating shaft (410) is connected to the rotating shaft (410), and the second rotating shaft (440) is provided with a driven gear (450) and a defogger brush (460). On the bracket (240), an impeller (420) located in the thick tube (231) is arranged at one end of the first rotating shaft (410), a driving gear (430) located in the protective cover (210) is arranged at the other end of the first rotating shaft (410), the second rotating shaft (440) is connected to the shaft hole (211), a driven gear (450) meshing with the driving gear (430) is arranged at the lower end of the second rotating shaft (440), and a defogger brush (460) in contact with the inner wall of the protective cover (210) is arranged on the side wall of the second rotating shaft (440).

4. A rotary evaporator according to claim 1, characterized in that: The air extraction pipe (310) is provided with a bellows (330).

5. A rotary evaporator according to claim 1, characterized in that: The exhaust pipe (230) is provided with a heat insulation sleeve on the outside, and the heat insulation sleeve is provided with anti-slip convex patterns on the outside.

6. A rotary evaporator according to claim 3, characterized in that: The lower end of the demisting brush (460) is higher than the pipe opening of the exhaust pipe (230).

7. A rotary evaporator according to claim 3, characterized in that: Bearings are provided between the rotating bracket (240) and the first rotating shaft (410), and between the shaft hole (211) and the second rotating shaft (440).

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