Parallel rotary evaporation system

Abstract

The utility model discloses a parallel type rotary evaporation system which comprises a circulating pump and at least two groups of rotary evaporators, the circulating pump is provided with an input port and an output port, each group of rotary evaporators at least comprises a condensation structure, and the condensation structure at least comprises a lower inlet and an upper outlet which are communicated with each other; wherein the lower inlet of the condensation structure of each group of rotary evaporator is connected to the output port of the circulating pump in parallel through a pipeline, and the upper outlet of the condensation structure of each group of rotary evaporator is connected to the input port of the circulating pump in parallel through a pipeline; according to the utility model, the problem of insufficient cold supply of the condenser for feeding cooling water behind the first syn-position due to the fact that the condensers of a plurality of rotary evaporators are connected in series can be solved.

Description

Technical Field

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

[0002] Rotary evaporator, also known as rotary evaporator, is an evaporation instrument widely used in laboratories. It is mainly used to continuously distill volatile solvents under reduced pressure conditions to achieve solvent recovery or concentrate the target components. Usually, a rotary evaporator includes a bracket, a condenser, a receiving bottle, a motor, a four-way pipe, an evaporation bottle and other components.

[0003] When using a rotary evaporator for experiments, the condenser of the rotary evaporator needs to be connected to a low-temperature cooling circulation pump. When the number of rotary evaporators to be used increases, although one low-temperature cooling circulation pump can cool multiple rotary evaporator condensers connected in series at the same time, there is a problem that the condenser close to the low-temperature cooling circulation pump has a good cooling effect, while the condenser far from the low-temperature cooling circulation pump has a poor cooling effect. At this time, the number of low-temperature cooling circulation pumps needs to be increased, which is not conducive to reducing the experimental cost and has a high space occupancy rate. Utility Model Content

[0004] In order to overcome the above disadvantages, the purpose of the utility model is to provide a parallel rotary evaporation system.

[0005] In order to achieve the above objectives, the technical solution adopted by the utility model includes:

[0006] A circulation pump and at least two groups of rotary evaporators, wherein the circulation pump has an input port and an output port, and each group of rotary evaporators at least includes a condensation structure, and the condensation structure at least has a lower inlet and an upper outlet that are connected;

[0007] Wherein, the lower inlet of the condensation structure of each group of the rotary evaporators is connected in parallel to the output port of the circulation pump through a pipeline, and the upper outlet of the condensation structure of each group of the rotary evaporators is connected in parallel to the input port of the circulation pump through a pipeline.

[0008] The present application forms a parallel effect between the circulating pump and at least two rotary evaporator condensation structures by connecting the output port of the circulating pump to the lower inlet of each condensation structure through pipelines, and connecting the input port of the circulating pump to the upper outlet of each condensation structure through pipelines, thereby achieving basically consistent cooling water temperature entering each condensation structure, thereby ensuring the evaporation efficiency and evaporation effect of multiple rotary evaporators.

[0009] In the preferred technical solution of the above-mentioned parallel rotary evaporation system, a vacuum pump having an air inlet and an air outlet is also included, and the vacuum port of the condensation structure of each rotary evaporator is connected in parallel to the air inlet of the vacuum pump through a pipeline.

[0010] In the preferred technical solution of the above-mentioned parallel rotary evaporation system, each pipeline connected to the lower inlet of the condensation structure of the rotary evaporator is equipped with a first switch.

[0011] In the preferred technical solution of the above-mentioned parallel rotary evaporation system, each pipeline connected to the outlet of the condensation structure of the rotary evaporator is equipped with a second switch.

[0012] In the preferred technical solution of the above-mentioned parallel rotary evaporation system, each pipeline connected to the vacuum port of the condensation structure of the rotary evaporator is equipped with a pressure regulating valve.

[0013] In the preferred technical solution of the above-mentioned parallel rotary evaporation system, each pipeline connected to the vacuum port of the condensation structure of the rotary evaporator is equipped with a third switch.

[0014] In the preferred technical solution of the above parallel rotary evaporation system, the rotary evaporators have two groups.

[0015] In the preferred technical solution of the above-mentioned parallel rotary evaporation system, the lower inlets of the condensation structures of the two groups of rotary evaporators are connected to the circulation pump outlet through a three-way valve.

[0016] The beneficial effect of the utility model is that the output port of the circulation pump is connected to the lower inlet of each condensation structure through pipelines, and the input port of the circulation pump is connected to the upper outlet of each condensation structure through pipelines, thereby forming a parallel effect of the circulation pump and at least two rotary evaporator condensation structures, achieving basically the same temperature of cooling water entering each condensation structure, and ensuring the evaporation efficiency and evaporation effect of multiple rotary evaporators. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 is a schematic diagram of a rotary evaporator;

[0019] In the figure: circulating pump 1, input port 11, output port 12, rotary evaporator 2, condensation structure 21, lower inlet 211, upper outlet 212, vacuum port 213, vacuum pump 3, air inlet 31, air outlet 32, first switch 4, second switch 5, pressure regulating valve 6, third switch 7, three-way valve 8. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0021] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Based on the background technology, the condensers of multiple rotary evaporators 2 are connected in series, which causes the condenser located at the rear of the first order to enter the cooling water to have insufficient cooling. The utility model provides a parallel rotary evaporation system, which aims to connect the output port 12 of the circulation pump 1 to the lower inlet 211 of each condensation structure 21 through a pipeline, and connect the input port 11 of the circulation pump 1 to the upper outlet 212 of each condensation structure 21 through a pipeline, so as to form a parallel effect of the circulation pump 1 and at least two rotary evaporator 2 condensation structures 21, so as to achieve a basically consistent temperature of the cooling water entering each condensation structure 21, and ensure the evaporation efficiency and evaporation effect of multiple rotary evaporators 2.

[0024] like Figure 1 to Figure 2 As shown, the parallel rotary evaporation system of the utility model includes: a circulation pump 1 and at least two groups of rotary evaporators 2, the circulation pump 1 has an input port 11 and an output port 12, each group of rotary evaporators 2 includes at least a condensation structure 21, and the condensation structure 21 has at least a lower inlet 211 and an upper outlet 212 that are connected to each other; wherein, the lower inlet 211 of the condensation structure 21 of each group of rotary evaporators 2 is connected in parallel to the output port 12 of the circulation pump 1 through a pipeline, and the upper outlet 212 of the condensation structure 21 of each group of rotary evaporators 2 is connected in parallel to the input port 11 of the circulation pump 1 through a pipeline.

[0025] See also Figure 2 The rotary evaporator 2 at least includes a bracket, a condensation structure 21 (condenser), a receiving bottle, a motor, a four-way pipe, and an evaporating bottle; wherein the condenser at least includes a lower inlet 211, an upper outlet 212, a top vacuum port 213, and a bottom access port arranged on the side.

[0026] See also Figure 1 , Figure 2The circulating pump 1 is a low-temperature cooling circulating pump 1. The circulating pump 1 has an output port 12 which is connected to the lower inlets 211 of the condensation structures 21 of at least two rotary evaporators 2 through pipelines. The circulating pump 1 has an input port 11 which is connected to the upper outlet 212 of each rotary evaporator 2 through pipelines, wherein the output port 12 of the circulating pump 1 and the lower inlet 211 of the condensation structure 21 of each rotary evaporator 2 are connected in parallel, and the input port of the circulating pump 1 and the upper outlet 212 of the condensation structure 21 of each rotary evaporator 2 are connected in parallel.

[0027] When it is necessary to condense the substance in the condensation structure 21 of the rotary evaporator 2, the low-temperature cooling circulation pump 1 provides cooling water to the lower inlet 211 of the condensation structure 21 through the output port 12. The parallel passage is set to make the temperature of the cooling water entering each condensation structure 21 of the rotary evaporator 2 consistent, thereby ensuring the consistency of the cooling temperature of the substance in the condensation structure 21, improving the condensation effect of the present application, and avoiding the problem of insufficient cooling temperature of the condensation structure 21 located at the rear of the first sequence due to the series connection of multiple rotary evaporator 2 condensation structures 21.

[0028] In one or more embodiments, a vacuum pump 3 having an air inlet 31 and an air outlet 32 ​​is further included, and the vacuum port 213 of the condensation structure 21 of each rotary evaporator 2 is connected in parallel to the air inlet 31 of the vacuum pump 3 through a pipeline. Figure 1 The vacuum pump 3 can pump the condensation structure 21 of each rotary evaporator 2 into a vacuum state through the pipeline, thereby reducing the boiling point and improving the condensation efficiency of the rotary evaporator 2.

[0029] In other possible embodiments, the air inlet 31 of the vacuum pump 3 can be connected in series to the vacuum ports 213 of the condensation structures 21 of at least two rotary evaporators 2 .

[0030] See also Figure 2 When there are two groups of rotary evaporators 2, the lower inlets 211 of the condensation structures 21 of the two groups of rotary evaporators 2 are connected to the outlet of the circulation pump 1 through the three-way valve 8, thereby forming a parallel effect between the circulation pump 1 and the condensation structures 21 of the two groups of rotary evaporators 2; when there are three groups of rotary evaporators 2, a four-way valve can be used to connect the condensation structures 21 of the pairs of rotary evaporators 2 to the circulation pump 1, and when there are more groups of rotary evaporators 2, specific pipelines can be used to achieve a parallel effect.

[0031] In one or more embodiments, each pipeline connected to the lower inlet 211 of the condensation structure 21 of the rotary evaporator 2 is configured with a first switch 4; each pipeline connected to the upper outlet 212 of the condensation structure 21 of the rotary evaporator 2 is configured with a second switch 5; each pipeline connected to the vacuum port 213 of the condensation structure 21 of the rotary evaporator 2 is configured with a pressure regulating valve 6; each pipeline connected to the vacuum port 213 of the condensation structure 21 of the rotary evaporator 2 is configured with a third switch 7.

[0032] See also Figure 1 It should be noted that the following description is made by configuring the rotary evaporator 2 into two groups for exemplary explanation; the condensation structures 21 of the two groups of rotary evaporators 2 are named the first condenser and the second condenser in sequence. Among them, the first switch 4 is configured on the pipeline connecting the lower inlet 211 of the first condenser and the three-way valve 8, and the pipeline connecting the lower inlet 211 of the second condenser and the three-way valve 8; the second switch 5 is configured on the pipeline connecting the upper inlet of the first condenser and the input port 11 of the circulation pump 1, and the pipeline connecting the upper inlet of the second condenser and the input port 11 of the circulation pump 1; the pressure regulating valve 6 and the third switch 7 are configured on the pipeline connecting the vacuum port 213 of the first condenser and the air inlet 31 of the vacuum pump 3, and the pipeline connecting the vacuum port 213 of the second condenser and the air inlet 31 of the vacuum pump 3.

[0033] By controlling the first switch 4, the second switch 5 and the third switch 7 on the pipeline connected to the first condenser to be in the closed state, it is possible to put only the second condenser in the working state; correspondingly, by controlling the first switch 4, the second switch 5 and the third switch 7 on the pipeline connected to the second condenser to be in the closed state, it is possible to put only the first condenser in the working state. By controlling the size of the pressure regulating valve 6 on the pipeline connected to the first condenser, or controlling the size of the pressure regulating valve 6 on the pipeline connected to the second condenser, it is possible to control the internal pressure of the first condenser and the second condenser, and realize the requirements of different boiling points in different first condensers or second condensers.

[0034] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A parallel rotary evaporation system, characterized in that: include: A circulation pump and at least two groups of rotary evaporators, wherein the circulation pump has an input port and an output port, and each group of rotary evaporators at least includes a condensation structure, and the condensation structure at least has a lower inlet and an upper outlet that are connected; Wherein, the lower inlet of the condensation structure of each group of the rotary evaporators is connected in parallel to the output port of the circulation pump through a pipeline, and the upper outlet of the condensation structure of each group of the rotary evaporators is connected in parallel to the input port of the circulation pump through a pipeline.

2. The parallel rotary evaporation system according to claim 1, characterized in that: It also includes a vacuum pump with an air inlet and an air outlet, and the vacuum port of the condensation structure of each rotary evaporator is connected in parallel to the air inlet of the vacuum pump through a pipeline.

3. The parallel rotary evaporation system according to claim 1, characterized in that: Each pipeline connected to the lower inlet of the condensing structure of the rotary evaporator is equipped with a first switch.

4. The parallel rotary evaporation system according to claim 1 or 3, characterized in that: Each pipeline connected to the outlet of the condensation structure of the rotary evaporator is equipped with a second switch.

5. The parallel rotary evaporation system according to claim 2, characterized in that: Each pipeline connected to the vacuum port of the condensing structure of the rotary evaporator is equipped with a pressure regulating valve.

6. The parallel rotary evaporation system according to claim 2 or 5, characterized in that: Each pipeline connected to the vacuum port of the condensing structure of the rotary evaporator is equipped with a third switch.

7. The parallel rotary evaporation system according to claim 1 or 2, characterized in that: The rotary evaporator has two groups.

8. The parallel rotary evaporation system according to claim 7, characterized in that: The lower inlets of the condensation structures of the two groups of rotary evaporators are connected to the output port of the circulation pump through a three-way valve.

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