CN220572680U - Rotary evaporator - Google Patents

Abstract

The utility model discloses a rotary evaporator, belonging to the technical field of evaporation equipment; the device comprises a control cabinet, a water bath kettle, a rotary distillation bottle, a driving mechanism, a supporting rod, a condensing tube, a collecting bottle, a gas guide bottle and a vacuum system, wherein the water bath kettle is arranged at the front side of the control cabinet, the rotary distillation bottle is rotatably arranged at the upper end of the control cabinet and is connected with the driving mechanism, the supporting rod is arranged at the rear side of the control cabinet, the condensing tube and the collecting bottle which are mutually communicated are arranged on the supporting rod, the condensing tube is communicated with the rotary distillation bottle through the gas guide bottle, the vacuum system is connected with the condensing tube, the device further comprises an expansion frame, an opening and closing cylinder and a protective cover, the expansion frame is fixedly connected with the control cabinet, the upper end of the expansion frame is provided with the opening and closing cylinder which is electrically connected with the control cabinet, the telescopic end of the opening and closing cylinder is connected with the protective cover, the protective cover is buckled at the upper port of the water bath kettle, and the yielding port is arranged at the rear side of the protective cover; the utility model effectively improves the constant-temperature heating effect of the water bath kettle and improves the economic benefit of enterprises.

Description

Rotary evaporator

Technical Field

The utility model relates to a rotary evaporator, and belongs to the technical field of evaporation equipment.

Background

The rotary evaporator, also called rotary evaporator, is an evaporating instrument widely used, and is composed of a motor, a distillation flask, a heating pot, a condensing tube and the like, and is mainly used for continuously distilling volatile solvents under the condition of reduced pressure, and is applied to the fields of chemistry, chemical engineering, biological medicine and the like. The method is characterized in that the distillation flask is driven to rotate at the most suitable speed by using a motor through electronic control, the evaporation flask is heated at constant temperature in a water bath kettle while rotating, the evaporation flask is in a negative pressure state by a vacuum pump, and the solution in the flask is heated, diffused and evaporated in the rotary flask under negative pressure. Because the distiller is continuously rotated, zeolite can be avoided from being added and bumping can be avoided. Meanwhile, as the liquid continuously rotates, the liquid is attached to the wall of the distiller to form a layer of liquid film, so that the evaporation area is enlarged, and the evaporation speed is increased.

The water bath top of rotary evaporator often is open, and the distillation flask is continuous to rotate the in-process, has nearly half the sphere all the time and can contact the air, and this can have following several problems:

1. the potential safety hazard exists, for example, in the working process of the rotary evaporator, water in the water bath kettle is easy to splash outwards after boiling to damage the skin of a user, and splashed water is also stained everywhere to cause cleaning difficulty; further, for example, the problem is that the staff is accidentally injured by the broken and splashed distillation flask due to improper operation, or the distillation flask in the operation state is touched by an irrelevant person at will.

2. In the case of low-temperature weather or when rotary evaporation is performed at a low rotation speed (for example, when the evaporation amount is large), the distillation flask contacts with cold air, and thus the constant temperature of the liquid film is affected to some extent. The condition that the temperature of the distillation flask in the air drops too much and the temperature is uneven easily appears, and then the evaporation efficiency of liquid in the rotatory bottle is influenced, has reduced the result of use of rotatory evaporimeter.

3. The water bath is influenced by external temperature, so that heat in the water bath is easily lost, and the heat cannot be fully utilized.

For this, a protective cover is arranged above the distillation flask in many designs at present, but cannot be well popularized, and the protective cover is connected with the water bath kettle or is arranged independently, so that a worker is required to manually open and close, and the operation is troublesome; and the protective cover in the open state occupies a relatively large area, so that the work of other operations such as disassembly and assembly of the distillation flask, solvent transfer and the like by workers is influenced, and even the passing is influenced.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a rotary evaporator.

The technical scheme adopted by the utility model is as follows: the utility model provides a rotary evaporator, includes switch board, water bath, rotatory distillation flask, actuating mechanism, bracing piece, condenser pipe, collecting bottle, gas guide cylinder and vacuum system, the water bath is installed to the switch board front side, rotatory distillation flask rotates and installs in the switch board upper end and connect actuating mechanism, switch board rear side erection bracing pole, install the condenser pipe and the collecting bottle of mutual intercommunication on the bracing piece, the condenser pipe passes through the gas guide cylinder intercommunication with rotatory distillation flask, vacuum system is connected with the condenser pipe. The automatic water bath kettle is characterized by further comprising an expansion frame, an opening and closing cylinder and a protective cover, wherein the expansion frame is fixedly connected with the control cabinet, the opening and closing cylinder electrically connected with the control cabinet is arranged at the upper end of the expansion frame, the telescopic end of the opening and closing cylinder is connected with the protective cover, the protective cover is buckled at the upper port of the water bath kettle, and a yielding port is formed in the rear side of the protective cover. The opening and closing cylinder is controlled to work through the control cabinet, so that the protection cover is controlled to be buckled with or separated from the water bath kettle.

Further, this design still includes the air duct, air duct one end and shield lid inner chamber intercommunication, the negative pressure system is linked together to the other end.

Further, the air duct is a corrugated pipe or a hose, has telescopic characteristics, and is convenient to cooperate with the lifting protective cover in the process.

Further, the protection cover upper end is provided with the neck pipe, the neck pipe upper end is provided with the expansion board, the flexible end of cylinder that opens and shuts runs through the expansion board and locks with the expansion board through two nuts, the air duct passes through the ring flange and is connected fixedly and communicates with the neck pipe with the expansion board.

Further, the extension plates at two sides of the telescopic end of the opening and closing cylinder are further provided with guide rods, the extension frame is provided with a top plate for installing the opening and closing cylinder, and the guide rods penetrate through the top plate and are in sliding connection with the top plate. The height is adjusted, the positioning and guiding functions are achieved, and the protective cover is enabled to stably lift.

Further, reinforcing strips are respectively arranged on two sides of the expansion plate, so that the structural strength of the expansion plate is improved.

Further, the expansion frame comprises a vertical rod, a cross rod and a connecting rod, and the three are spliced to form the right-angle expansion frame, so that the installation and the use are convenient.

Furthermore, at least two connecting plates are respectively and fixedly arranged at two sides of the control cabinet, the upright rods of the expansion frame are fixedly connected with the connecting plates through bolts, and the whole set of structure is strong in integrity.

Further, the inside water conservancy diversion structure that is provided with of shield, the water conservancy diversion structure of shield and neck union coupling department adopts the circular arc transition, prevents that the water droplet from directly dripping in the juncture of neck pipe and shield, and the water conservancy diversion structure is water conservancy diversion strip or guiding gutter, and the condensed liquid that probably produces on shield or the air duct is led into the pot along the water bath lateral wall in, prevents to drip on the distillation flask, protection rotatory distillation flask.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the opening and closing cylinder is used for controlling the protective cover to automatically open and close with the water bath kettle, so that a worker is not required to manually open and close the protective cover, and the operation is simple and convenient; and the opened protective cover is positioned right above the water bath kettle, so that the space around the rotary evaporator is not occupied, and the interference to other operations such as disassembly and assembly of the distillation flask, solvent transfer and the like of workers is avoided. And set up the air duct and remove the steam that the water-bath produced, prevent steam and rotatory evaporimeter other parts hedging or open the instantaneous scald staff of protective cover, the structure of protection rotatory evaporimeter.

According to the utility model, heat dissipation caused by the influence of the ambient temperature of the water bath kettle can be reduced, heat waste is reduced, the temperature of the distillation flask in the water bath kettle can be kept in a more constant-temperature state, the evaporation efficiency and the use effect of the rotary evaporator are effectively improved, a worker can control the protective cover to lift only through an operation switch on the control cabinet, and the convenience of opening the protective cover is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an isometric view of the present utility model.

Fig. 2 is an isometric view of the present utility model after concealing the protective cover and lifting mechanism.

Fig. 3 is an isometric view of a protective cover according to the present utility model.

In the figure: 1. a control cabinet; 2. a water bath kettle; 3. rotating the distillation flask; 4. a driving mechanism; 5. a support rod; 6. a condensing tube; 7. a collection bottle; 8. a gas cylinder; 9. an expansion frame; 10. an opening and closing cylinder; 11. a protective cover; 12. a yielding port; 13. an air duct; 14. a neck tube; 15. an expansion board; 16. a guide rod; 17. a top plate; 18. reinforcing strips; 19. a connecting plate; 20. and a flow guiding structure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Furthermore, in the description of the present utility model, unless otherwise indicated, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

Example 1

As shown in fig. 1-3: a rotary evaporator comprises a control cabinet 1, a water bath 2, a rotary distillation flask 3, a driving mechanism 4, a supporting rod 5, a condensing tube 6, a collecting bottle 7, a gas guide bottle 8 and a vacuum system. The utility model discloses a vacuum distillation system, including control cabinet 1, including the elevating platform, the elevating platform of control cabinet 1 front side is provided with water-bath 2, is provided with heating structure (like heating inner bag) in the water-bath 2, rotatory distillation flask 3 rotate and install in control cabinet 1 upper end and connect actuating mechanism 4 (motor), rotate through actuating mechanism 4 control rotatory distillation flask 3, control cabinet 1 rear side erection bracing pole 5, install condenser pipe 6 (including two condenser pipes 6 of main and auxiliary) and collecting bottle 7 of mutual intercommunication on the bracing pole 5, condenser pipe 6 and rotatory distillation flask 3 are through gas guide bottle 8 intercommunication, vacuum system (prior art, not shown in the drawings) is connected with condenser pipe 6. The water bath 2, the driving mechanism 4, the lifting table and the like are respectively electrically connected with the control cabinet 1 and controlled by the control cabinet 1, and the control cabinet 1 comprises an internal controller, an external control button (or knob), a display screen and the like. The embodiment further comprises an expansion frame 9, an opening and closing cylinder 10 and a protective cover 11, wherein the protective cover 11 is of a dome structure (in order to facilitate observation of the condition in the water bath 2, the protective cover 11 can be arranged into a transparent structure), the expansion frame 9 is fixedly connected with the control cabinet 1, the upper end of the expansion frame is provided with the opening and closing cylinder 10 electrically connected with the control cabinet 1, the telescopic end of the opening and closing cylinder 10 is connected with the protective cover 11, the protective cover 11 is buckled on the upper port of the water bath 2, a yielding port 12 is formed in the rear side of the protective cover 11, a diversion structure 20 is arranged on the inner side of the protective cover 11, the diversion structure 20 at the joint of the protective cover 11 and the neck pipe 14 adopts circular arc transition, and the diversion structure 20 is a diversion strip or a diversion groove. The lower part of the control cabinet 1 can be provided with a plurality of roller groups so as to facilitate the whole movement.

The embodiment also comprises an air duct 13, one end of the air duct 13 is communicated with the inner cavity of the protective cover 11, the other end of the air duct is communicated with a negative pressure system (such as an exhaust fan and the like), steam generated by the water bath 2 is discharged through the air duct 13, otherwise, the evaporation process also needs to be provided with a temporary exhaust hood structure for the evaporator, and the use is inconvenient. The air duct 13 adopts a corrugated pipe or a hose, so that the protective cover 11 can be conveniently opened and closed.

For the cylinder 10 that opens and shuts and air duct 13 and protective cover 11 are connected of being convenient for, protective cover 11 upper end is provided with neck pipe 14, and neck pipe 14 and protective cover 11 inner chamber intercommunication, neck pipe 14 upper end is provided with expansion board 15, the cylinder 10 expansion end that opens and shuts (expansion end sets up the external screw thread) runs through expansion board 15 and locks with expansion board 15 through two nuts, and two nuts set up the cylinder 10 expansion end that opens and shuts in expansion board 15 upper and lower both sides respectively, air duct 13 is fixed and communicates with neck pipe 14 through ring flange and expansion board 15 connection. The expansion plates 15 on two sides of the telescopic end of the opening and closing cylinder 10 are further provided with guide rods 16, the expansion frame 9 is provided with a top plate 17 for installing the opening and closing cylinder 10, and the guide rods 16 penetrate through the top plate 17 and are in sliding connection with the top plate 17. Reinforcing strips 18 are respectively arranged at two sides of the expansion plate 15, and the reinforcing strips 18 adopt easily-obtained moments

The expansion frame 9 comprises vertical rods, cross rods and connecting rods, wherein the vertical rods, the cross rods and the connecting rods are rectangular pipes, the vertical rods, the cross rods and the connecting rods are spliced to form the right-angle expansion frame 9, specifically, one vertical rod is perpendicularly connected with one cross rod to form a right-angle structure, and the two right-angle structures are arranged in parallel and fixedly formed by connecting more than two connecting rods. At least two connecting plates 19 are fixedly arranged on two sides of the control cabinet 1 respectively, and the upright rods of the expansion frame 9 are fixedly connected with the connecting plates 19 through bolts.

While the present utility model has been described in detail with reference to the drawings, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the knowledge of those skilled in the art.

Claims (9)

1. The utility model provides a rotary evaporator, includes switch board (1), water bath (2), rotatory distillation bottle (3), actuating mechanism (4), bracing piece (5), condenser pipe (6), collecting bottle (7), gas guide cylinder (8) and vacuum system, switch board (1) front side installation water bath (2), rotatory distillation bottle (3) rotate and install in switch board (1) upper end and connect actuating mechanism (4), switch board (1) rear side erection bracing piece (5), install condenser pipe (6) and collecting bottle (7) of mutual intercommunication on bracing piece (5), condenser pipe (6) and rotatory distillation bottle (3) are through gas guide cylinder (8) intercommunication, vacuum system is connected with condenser pipe (6), its characterized in that: still include extension frame (9), open and shut cylinder (10) and shield lid (11), extension frame (9) are connected fixedly with switch board (1), and the cylinder (10) that opens and shuts that is connected with switch board (1) electricity is installed to its upper end, the shield lid (11) is connected to the flexible end of cylinder (10) that opens and shuts, shield lid (11) are detained in water bath (2) upper port, and shield lid (11) rear side has been seted up and has been put aside mouth (12).

2. A rotary evaporator according to claim 1 wherein: the device also comprises an air duct (13), one end of the air duct (13) is communicated with the inner cavity of the protective cover (11), and the other end is communicated with a negative pressure system.

3. A rotary evaporator according to claim 2 wherein: the air duct (13) is a corrugated pipe or a hose.

4. A rotary evaporator according to claim 3 wherein: the protection cover is characterized in that a neck pipe (14) is arranged at the upper end of the protection cover (11), an expansion plate (15) is arranged at the upper end of the neck pipe (14), the telescopic end of the opening and closing cylinder (10) penetrates through the expansion plate (15) and is locked with the expansion plate (15) through two nuts, and the air duct (13) is fixedly connected with the expansion plate (15) through a flange plate and is communicated with the neck pipe (14).

5. A rotary evaporator according to claim 4 wherein: the expansion plates (15) on two sides of the telescopic end of the opening and closing cylinder (10) are further provided with guide rods (16), the expansion frame (9) is provided with a top plate (17) for installing the opening and closing cylinder (10), and the guide rods (16) penetrate through the top plate (17) and are in sliding connection with the top plate.

6. A rotary evaporator according to claim 5 wherein: reinforcing strips (18) are respectively arranged on two sides of the expansion plate (15).

7. A rotary evaporator according to claim 6 wherein: the expansion frame (9) comprises a vertical rod, a cross rod and a connecting rod, and the three are spliced to form the right-angle expansion frame (9).

8. A rotary evaporator according to claim 7 wherein: at least two connecting plates (19) are fixedly arranged on two sides of the control cabinet (1) respectively, and the upright rods of the expansion frame (9) are fixedly connected with the connecting plates (19) through bolts.

9. A rotary evaporator according to claim 8 wherein: the inner side of the protective cover (11) is provided with a flow guiding structure (20), the flow guiding structure (20) at the joint of the protective cover (11) and the neck pipe (14) adopts arc transition, and the flow guiding structure (20) is a flow guiding strip or a flow guiding groove.