Rotary evaporator parallel connection device

Abstract

A rotary evaporator parallel connection device comprises a plurality of rotary evaporators, a circulating water cooling instrument and two water segregators, the two water segregators are the first water segregator and the second water segregator respectively, and each water segregator comprises a main water pipe and a plurality of branch water pipes which are communicated with each other. The number of the water distribution pipes of each water distributor is equal to that of the rotary evaporators, a main water pipe of the first water distributor is communicated with a water outlet of the circulating water cooling instrument, the water distribution pipe of the first water distributor is communicated with a water inlet of one rotary evaporator, and a main water pipe of the second water distributor is communicated with a water inlet of the circulating water cooling instrument. The water distribution pipes of the first water segregator are respectively communicated with a water outlet of one rotary evaporator, and first shut-off valves are arranged on pipelines for communicating the water distribution pipes of the first water segregator with the rotary evaporators. According to the utility model, the plurality of rotary evaporators are connected in parallel through the first water segregator and the second water segregator and then are connected in series with the circulating water cooling instrument for use, so that evaporated organic solvents are recycled, and the cost and the laboratory space are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laboratory equipment, and in particular relates to a rotary evaporator parallel device. Background Art

[0002] The rotary evaporator is the most commonly used organic sample concentration device in environmental laboratories. It is highly efficient and inexpensive, and is suitable for use in laboratories with few analytical samples. Generally, laboratories are equipped with multiple rotary evaporators. However, it also has certain disadvantages. Each evaporator requires a vacuum pump for vacuum extraction, and each evaporator requires a circulating water cooler to provide low-temperature water (usually 0-4 degrees Celsius) for recovering evaporated organic solvents to prevent air pollution. This will occupy a large amount of laboratory space and increase the supporting cost and use cost of a single rotary evaporator. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model aims to provide a rotary evaporator parallel device.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A rotary evaporator parallel device comprises several rotary evaporators, a circulating water cooler and two water distributors, the two water distributors are respectively a first water distributor and a second water distributor, each water distributor comprises a main water pipe and several water distribution pipes which are interconnected, the number of water distribution pipes of each water distributor is equal to the number of rotary evaporators, the main water pipe of the first water distributor is connected to the water outlet of the circulating water cooler through a pipeline, and the several water distribution pipes thereof are respectively connected to the water inlet of a rotary evaporator through a pipeline, the main water pipe of the second water distributor is connected to the water inlet of the circulating water cooler through a pipeline, and the several water distribution pipes thereof are respectively connected to the water outlet of a rotary evaporator through a pipeline, and a first shut-off valve is arranged on the pipeline connecting each water distribution pipe of the first water distributor and the rotary evaporator.

[0006] Preferably, it also includes a vacuum pump and a third water distributor. The structure of the third water distributor is the same as that of the first water distributor and the second water distributor, and also includes a main water pipe and a plurality of water distributors that are interconnected. The number of water distributors of the third water distributor is equal to the number of rotary evaporators. The main water pipe of the third water distributor is connected to the vacuum pump through a pipeline, and the plurality of water distributors are respectively connected to the exhaust port of a rotary evaporator through pipelines. A second shut-off valve is provided on the pipeline connecting each water distributor of the third water distributor and the rotary evaporator.

[0007] Preferably, a pipeline booster pump is provided on the pipeline connecting the main water pipe of the first water distributor and the water outlet of the circulating water cooler.

[0008] Preferably, a tee is provided on the pipeline connecting the main water pipe of the third water distributor and the vacuum pump, and the two interfaces of the tee are respectively connected to the pipeline connecting the vacuum pump and the main water pipe of the third water distributor, and a third shut-off valve is provided on the other interface of the tee.

[0009] Beneficial effects of the utility model

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] The utility model connects a plurality of rotary evaporators in parallel through a first water distributor and a second water distributor, and then uses them in series with a circulating water cooler. When in use, the rotary evaporator to be used can be selected by opening or closing the first shut-off valve on each branch. In this way, one circulating water cooler can be used by a plurality of rotary evaporators at the same time, and evaporated organic solvents can be recovered, thus saving costs and laboratory space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the connection between the rotary evaporator and the circulating water cooler of the utility model;

[0013] Figure 2 The utility model is a structural schematic diagram of the rotary evaporator connected to the vacuum pump. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to 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.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] See also Figure 1 The utility model provides a technical solution: a rotary evaporator parallel device, comprising a plurality of rotary evaporators 1, a circulating water cooler 2 and two water distributors, the two water distributors are a first water distributor 44 and a second water distributor 45, each of which comprises a main water pipe 41 and a plurality of water distributors 42 which are interconnected, the number of water distributors 42 of each water distributor is equal to the number of rotary evaporators 1, the main water pipe 41 of the first water distributor 44 is connected to the water outlet of the circulating water cooler 2 through a pipeline, and the plurality of water distributors 42 are respectively connected to the water inlet of a rotary evaporator 1 through a pipeline, the main water pipe 41 of the second water distributor 45 is connected to the water inlet of the circulating water cooler 2 through a pipeline, and the plurality of water distributors 42 are respectively connected to the water outlet of a rotary evaporator 1 through a pipeline, and a first shut-off valve 51 is arranged on the pipeline connecting each water distributor 42 of the first water distributor 44 and the rotary evaporator 1.

[0018] The utility model connects a plurality of rotary evaporators 1 in parallel through a first water distributor 44 and a second water distributor 45 and then uses them in series with a circulating water cooler 2. When in use, the rotary evaporator 1 to be used can be selected by opening or closing the first shut-off valve 51 on each branch. In this way, a circulating water cooler 2 can be used by a plurality of rotary evaporators 1 at the same time, recovering the evaporated organic solvent, saving costs and laboratory space.

[0019] Furthermore, in order to avoid insufficient pressure when a circulating water cooler 2 cooperates with multiple rotary evaporators 1, a pipeline booster pump 6 is provided on the pipeline connecting the main water pipe 41 of the first water distributor 44 and the water outlet of the circulating water cooler 2 to increase the water output of the circulating water cooler 2.

[0020] For further information, see Figure 2The utility model further comprises a vacuum pump 3 and a third water distributor 46. The structure of the third water distributor 46 is the same as that of the first water distributor 44 and the second water distributor 45, and also comprises a main water pipe 41 and a plurality of water distributors 42 which are interconnected. The number of the water distributors 42 of the third water distributor 46 is equal to the number of the rotary evaporators 1. The main water pipe 41 of the third water distributor 46 is connected to the vacuum pump 3 through a pipeline, and the plurality of water distributors 42 are respectively connected to the air suction port of a rotary evaporator 1 through a pipeline. A second shut-off valve 52 is arranged on the pipeline connecting each water distributor 42 of the third water distributor 46 and the rotary evaporator 1.

[0021] The utility model connects several rotary evaporators 1 in parallel through the third water distributor 46 and then connects them in series with a vacuum pump 3. When in use, the rotary evaporator 1 to be used can be selected by opening or closing the second shut-off valve 52 on each branch. In this way, one vacuum pump 3 can be used to evacuate multiple rotary evaporators 1 at the same time, further saving costs and laboratory space.

[0022] Furthermore, a three-way pipe 7 is provided on the pipeline connecting the main water pipe 41 of the third water distributor 46 and the vacuum pump 3. The two interfaces of the three-way pipe 7 are respectively connected to the pipelines connecting the vacuum pump 3 and the main water pipe 41 of the third water distributor 46. A third shut-off valve 53 is provided on the other interface of the three-way pipe 7. The vacuum system can be depressurized at any time by opening or closing the third shut-off valve 53, which is convenient for use.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary evaporator parallel device, characterized in that: The invention comprises a plurality of rotary evaporators (1), a circulating water cooler (2) and two water distributors, the two water distributors being a first water distributor (44) and a second water distributor (45), each of the water distributors comprising a main water pipe (41) and a plurality of water distribution pipes (42) which are interconnected, the number of the water distribution pipes (42) of each water distributor being equal to the number of the rotary evaporators (1), the main water pipe (41) of the first water distributor (44) being connected to the water outlet of the circulating water cooler (2) via a pipeline. The plurality of water distribution pipes (42) are respectively connected to the water inlet of a rotary evaporator (1) through a pipeline, the main water pipe (41) of the second water distributor (45) is connected to the water inlet of the circulating water cooler (2) through a pipeline, and the plurality of water distribution pipes (42) are respectively connected to the water outlet of a rotary evaporator (1) through a pipeline, and each water distribution pipe (42) of the first water distributor (44) is provided with a first shut-off valve (51) on the pipeline connecting the rotary evaporator (1) and each water distribution pipe (42) of the first water distributor (44).

2. A rotary evaporator parallel device according to claim 1, characterized in that: The invention also comprises a vacuum pump (3) and a third water distributor (46). The structure of the third water distributor (46) is the same as that of the first water distributor (44) and the second water distributor (45), and also comprises a main water pipe (41) and a plurality of water distributors (42) which are interconnected. The number of the water distributors (42) of the third water distributor (46) is equal to the number of the rotary evaporators (1). The main water pipe (41) of the third water distributor (46) is connected to the vacuum pump (3) through a pipeline, and the plurality of water distributors (42) are respectively connected to the air extraction port of a rotary evaporator (1) through a pipeline. A second shut-off valve (52) is provided on the pipeline connecting each water distributor (42) of the third water distributor (46) and the rotary evaporator (1).

3. A rotary evaporator parallel device according to claim 1, characterized in that: A pipeline booster pump (6) is provided on the pipeline connecting the main water pipe (41) of the first water distributor (44) and the water outlet of the circulating water cooler (2).

4. A rotary evaporator parallel device according to claim 2, characterized in that: A three-way pipe (7) is provided on the pipeline connecting the main water pipe (41) of the third water distributor (46) and the vacuum pump (3); two interfaces of the three-way pipe (7) are respectively connected to the pipeline connecting the vacuum pump (3) and the main water pipe (41) of the third water distributor (46); and a third shut-off valve (53) is provided on the other interface of the three-way pipe (7).

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