CN218686433U

CN218686433U - Rotary evaporator

Info

Publication number: CN218686433U
Application number: CN202223003775.3U
Authority: CN
Inventors: 葛徳敏; 伏宝玉; 祝顺维
Original assignee: Nanjing Luye Pharmaceutical Co Ltd
Current assignee: Nanjing Luye Pharmaceutical Co Ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-24
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses a rotary evaporator. The water bath kettle comprises a base, a supporting arm and a water bath kettle, wherein the supporting arm and the water bath kettle are arranged on the upper side of the base, a rotating mechanism is obliquely arranged on the supporting arm, the middle of the rotating mechanism is connected with a motor, the upper end and the lower end of the rotating mechanism are respectively connected with a condenser and an evaporation bottle, the lower end of the condenser is connected with a collecting tank, the lower end of the evaporation bottle is arranged in the water bath kettle, a temperature sensor, water and a heating pipe used for heating the water are arranged in the water bath kettle, a water pipe is arranged in the water bath kettle, a control valve is arranged on the water pipe, and the control valve, the heating pipe, the temperature sensor and the motor are all connected with a control unit. The utility model arranges the water pipe in the water bath kettle, when the water in the water bath kettle is required to be cooled, the chilled water is controlled and introduced through the control valve on the water pipe, thereby realizing the flexible adjustment of the temperature, meeting the process requirements and having better cooling effect; the repeatability is good, and the consistency of products in each batch can be ensured for the products of the same process.

Description

Rotary evaporator

Technical Field

The utility model relates to an evaporation equipment technical field, concretely relates to rotary evaporator.

Background

The rotary evaporator is a common concentration and extraction device and is mainly used for continuously distilling a large amount of volatile solvents under the condition of reduced pressure, the working principle of the rotary evaporator is that an evaporation bottle is in a negative pressure state through a vacuum pump, the evaporation bottle is controlled to rotate at a constant speed at the most appropriate speed so as to increase the evaporation area, the evaporation bottle is placed in a water bath kettle to be heated at a constant temperature, and the solution in the evaporation bottle is heated, diffused and evaporated under the negative pressure. The solution of evaporating flask becomes steam after the evaporation, then in the transmission through the air duct condenses the condenser pipe rapidly, when the solution in the evaporating flask evaporates to certain concentration, the preparation is accomplished, and equipment is shut down.

The problems of the existing rotary evaporator are mainly as follows: 1. the rotation speed of the evaporation bottle, the temperature preparation time of the water bath and the like all need to be controlled manually, and the quality of each batch of concentrated solution can be different due to the error of manual control; 2. in the use process of the rotary evaporator, a worker is required to visually observe whether the solution is prepared or not at intervals, and the solution is prevented from boiling, so that a large amount of manpower is consumed. 3. For a special preparation process, for example, a certain preparation process needs to be divided into a plurality of stages, and the time, the rotating speed and the temperature of each stage are different, so that the conventional rotary evaporator is difficult to realize.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rotary evaporator to the not enough of prior art existence.

In order to realize the above object, the utility model provides a rotary evaporator, the on-line screen storage device comprises a base, the upside of base is fixed with support arm and water bath, the slope is equipped with rotary mechanism on the support arm, rotary mechanism's middle part is connected with the motor, and its upper and lower both ends are connected with condenser and evaporation bottle respectively, the lower extreme and the holding vessel of condenser are connected, the lower extreme setting of evaporation bottle is in the water bath, be equipped with temperature sensor, water and be used for the heating pipe to water heating in the water bath, still have the water pipe in the water bath, be equipped with the control valve on the water pipe, control valve, heating pipe, temperature sensor and motor all are connected with the control unit.

Furthermore, both ends of the water pipe are connected with a chilled water making machine.

Further, the water pipe encircles the lateral wall inboard that sets up at the water bath.

Further, the control valve is an electromagnetic valve or a pneumatic valve.

Furthermore, the control unit comprises a frequency converter connected with the motor and a programmable controller connected with the frequency converter, wherein the programmable controller is connected with a touch screen and is respectively connected with the control valve and the temperature sensor.

Furthermore, the touch screen is fixed at the upper end of a supporting rod, and the lower end of the supporting rod is fixed at the upper side of the supporting arm.

Furthermore, an alarm is arranged on one side of the touch screen and connected with the programmable controller.

Has the advantages that: the utility model arranges the water pipe in the water bath kettle, when the water in the water bath kettle is required to be cooled, the chilled water is controlled to be introduced through the control valve on the water pipe, thereby realizing the flexible adjustment of the temperature and meeting the process requirement, the water pipe is coiled and arranged at the inner side of the side wall of the water bath kettle, the rotation of the evaporation bottle is not influenced, and the water bath kettle has better cooling effect; the rotating speed and the steering of the motor can be flexibly adjusted through the control of the frequency converter, so that the multi-stage process can be conveniently realized in a matched manner; the repeatability is good, and the consistency of products in each batch can be ensured for the products of the same process.

Drawings

Fig. 1 is a schematic structural diagram of a rotary evaporator according to an embodiment of the present invention.

Detailed Description

The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

As shown in fig. 1, the embodiment of the present invention provides a rotary evaporator, which comprises a base 1, wherein a support arm 12 and a water bath 2 are fixed on the upper side of the base 11, the water bath 2 is preferably an electric lifting water bath, and the height of the electric lifting water bath can be adjusted up and down. The rotary mechanism 5 is obliquely arranged on the supporting arm 12, the middle of the rotary mechanism 5 is connected with the motor 6, the upper end and the lower end of the rotary mechanism 5 are respectively connected with the condenser 9 and the evaporation bottle 1, the lower end of the condenser 9 is connected with the collecting tank 10, the lower end of the evaporation bottle 1 is arranged in the water bath kettle 2, and the temperature sensor, the water and the heating pipe 4 are arranged in the water bath kettle 2. Heating pipe 4 can be to the water heating in the water bath 2, the lower extreme setting of evaporating flask 1 is in water, and it and water bath 2 contactless, can drive the partial rotation of 5 inside and evaporating flask 1 connections of rotary mechanism when motor 6 rotates, thereby drive evaporating flask 1 and rotate, condenser 9 can not rotate this moment, become vapour after the solution evaporation in the evaporating flask 1, the inside through rotary mechanism 5 enters into in condenser 9, flow into in collecting tank 10 after the condensation in condenser 9. The above is the same as the prior art, and will not be described again. In order to facilitate the rapid cooling and adjustment of the water temperature in the water bath 2, a water pipe 3 is arranged in the water bath 2, a control valve is arranged on the water pipe 3, and the control valve, the heating pipe 4, the temperature sensor and the motor 6 are all connected with a control unit. The control unit controls the control valve to work, water is introduced into the water pipe 3, the water is discharged through the water pipe 3 and does not flow into the water bath kettle 2, and the water in the water bath kettle 2 is cooled only through the heat conduction effect of the water pipe 3.

Running water can be let in the water pipe 3, and in order to ensure the cooling effect, the both ends of water pipe 3 all are connected with the frozen water maker. When the water temperature in the water bath kettle 2 is too high or is reduced due to process requirements, if the water temperature required by the previous stage is 60 ℃ and the water temperature required by the next stage is 50 ℃, the control valve can be controlled to be opened, at the moment, the chilled water with lower temperature manufactured by the chilled water manufacturing machine can flow into the water pipe from one end of the water pipe 3, the water in the water bath kettle 2 is cooled and then flows back into the chilled water manufacturing machine from the other end of the water pipe, and the process is circulated until the water in the water bath kettle 2 is reduced to 50 ℃.

In order to prevent the water pipe 3 from touching the evaporation flask 1 and ensure a good cooling effect of the water pipe 3, the water pipe 3 is preferably arranged around the inner side of the side wall of the water bath 2.

The utility model discloses the control unit includes the converter of being connected with the motor and the programmable controller who is connected with the converter, and the converter can be under programmable controller's control steerable motor 6 the rotational speed with turn to, and programmable controller is connected with touch-control screen 7, can set for the heating temperature of water bath 2 to water, motor 6's rotational speed, motor 6 turn to, the opening of operating duration and control valve closes the condition etc. through touch-control screen 7. In addition, the working flow can be divided into a plurality of stages according to the preparation process, and the time, the rotating speed and the temperature of each stage can be set to be different according to the requirement. To facilitate the use of the touch screen 7, the touch screen 7 is preferably fixed to the upper end of a support rod 13, and the lower end of the support rod 13 is fixed to the upper side of the support arm 12.

In addition, a pressure sensor for detecting the vacuum pressure in the evaporation bottle 1, a sensor for detecting the running condition of the motor 6 and the like can be connected with the programmable controller, so that the running monitoring function is realized. In order to facilitate reminding of an operator after operation failure or operation completion, an alarm 8 is arranged on one side of the touch screen 7, the alarm 8 is preferably an audible and visual alarm, and the alarm 8 is connected with the programmable controller.

The above description is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described belong to the prior art or the common general knowledge to those skilled in the art. Without departing from the principle of the present invention, several improvements and decorations can be made, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a rotatory evaporimeter, includes the base, the upside of base is fixed with support arm and water bath, the slope is equipped with rotary mechanism on the support arm, rotary mechanism's middle part and motor are connected, and its upper and lower both ends are connected with condenser and evaporating flask respectively, the lower extreme and the collection tank of condenser are connected, the lower extreme setting of evaporating flask is in the water bath, be equipped with temperature sensor, water in the water bath and be used for the heating pipe to the water heating, a serial communication port, still there is the water pipe in the water bath, be equipped with the control valve on the water pipe, control valve, heating pipe, temperature sensor and motor all are connected with the control unit.

2. A rotary evaporator according to claim 1 wherein both ends of the water tube are connected to a chilled water maker.

3. A rotary evaporator according to claim 1 wherein the water tube is circumferentially disposed inside the side wall of the water bath.

4. A rotary evaporator according to claim 1 wherein the control valve is a solenoid or pneumatic valve.

5. The rotary evaporator according to claim 1, wherein the control unit comprises a frequency converter connected with the motor and a programmable controller connected with the frequency converter, the programmable controller is connected with a touch screen, and the touch screen is respectively connected with the control valve and the temperature sensor.

6. A rotary evaporator according to claim 5 wherein the touch screen is fixed to the upper end of a support rod, the lower end of which is fixed to the upper side of the support arm.

7. The rotary evaporator according to claim 5, wherein an alarm is arranged on one side of the touch screen and connected with a programmable controller.