CN213100912U - Improved laboratory steam distillation device - Google Patents

Abstract

An improved laboratory water vapor distillation device comprises a water vapor generation part, an extraction part and a collection part, wherein the water vapor generation part comprises a heating source, a three-neck bottle, a water adding pipe, a safety pipe, a first condensation pipe and a first distillation elbow; the extraction part comprises a first heat-preservation sleeve, an inlet pipe, a first double-neck bottle, a porous material placing plate and a second distillation elbow; the collection portion includes a second condenser tube, a second insulated casing, a third distillation elbow, and a second double-necked flask. The technical advantages of the utility model reside in that vapor distillation plant simple structure, convenient to use conveniently regulate and control letting in and leading to out of comdenstion water and steam and material and water, have good heat preservation effect, prevent effectively that partial outlet from blockking up, eliminate the potential safety hazard, improve the effect of material separation and purification, are worth using widely in this field.

Description

Improved laboratory steam distillation device

Technical Field

The utility model relates to a steam distillation technical field specifically is a modified laboratory steam distillation plant.

Background

Steam distillation is commonly used to distill materials that have a relatively high boiling point at atmospheric pressure or are easily decomposed at the boiling point, and is also commonly used to separate high boiling point materials from non-volatile impurities, which is a common method of extracting and purifying volatile oils in the production of flavors and fragrances. The use of steam distillation is limited to the case where the products obtained are completely (or almost) immiscible with water, where the vapor pressures of the components are determined solely by their temperature, independently of their composition, when they are vaporized by heating. The steam distillation method is suitable for separating substances which are easily decomposed near the boiling point of the substances and also suitable for separating required components (such as natural product essential oil, alkaloid and the like) from nonvolatile substances or resin-like substances, and the obtained volatile essential oil can be used for cigarette products and endows the cigarette products with special aroma. Regarding the device that steam distillation used, as disclosed in patent document with application number CN201420107644.6, a steam distillation device includes a steam generator, a distillation flask, a condenser pipe, a guide pipe, a receiver, and a thermometer, wherein the distillation flask includes three bottlenecks, a first bottleneck is directly connected with an inner cavity of the distillation flask, a second bottleneck is connected with the inner cavity of the distillation flask through a bottleneck, a third bottleneck is located on the bottleneck of the second bottleneck and the inner cavity of the distillation flask, inner walls of the first bottleneck and the second bottleneck are frosted, an outer wall of the third bottleneck is frosted, the first bottleneck is connected with the steam generator for guiding steam generated in the steam generator, the second bottleneck is used for installing the thermometer, the third bottleneck is used for connecting the condenser pipe, and the condenser pipe is sequentially connected with the guide pipe and the receiver. However, the traditional laboratory steam distillation device has poor heat preservation effect, and the outlet is easy to be blocked, so that the system pressure is increased, and certain potential safety hazard is caused.

Disclosure of Invention

A technical object of the utility model is to provide a modified laboratory steam distillation plant solves traditional steam distillation plant and keeps warm the problem that the effect is poor, the export is easy to be blockked up, there is the potential safety hazard.

The utility model discloses a concrete technical scheme as follows: an improved laboratory water vapor distillation device comprises a water vapor generation part, an extraction part and a collection part, wherein the water vapor generation part comprises a heating source, a three-neck bottle, a water feeding pipe, a safety pipe, a first condensation pipe and a first distillation elbow, the water feeding pipe, the safety pipe and the first condensation pipe are respectively connected into three connecting pipe openings of the three-neck bottle, and the first distillation elbow is connected to the upper part of the first condensation pipe;

the extraction part comprises a first heat-preservation sleeve, an inlet pipe, a first double-neck bottle, a porous material placing plate and a second distillation elbow, wherein the inlet pipe is introduced into the bottle from a pipe connecting opening of the first double-neck bottle, the first heat-preservation sleeve is connected between the first distillation elbow and the inlet pipe, the porous material placing plate is suspended in the first double-neck bottle and is positioned above an outlet of the inlet pipe, and the second distillation elbow is connected into the other pipe connecting opening of the first double-neck bottle;

the collecting part comprises a second condensing pipe, a second heat-preserving casing pipe, a third distillation elbow and a second double-neck bottle, the third distillation elbow is connected into a connecting pipe opening of the second double-neck bottle, and the second condensing pipe and the second heat-preserving casing pipe are sequentially connected between the second distillation elbow and the third distillation elbow.

Preferably, the body of the first double-necked bottle has a double-layered hollow structure.

Preferably, the porous material placing plate is provided with two layers, and the porous material placing plate at least positioned on the upper layer is movably connected with the inner wall of the first double-neck bottle.

Preferably, the first condensation pipe is a spherical condensation pipe.

Preferably, the length of the first condensation pipe is 4-6 cm.

Preferably, the first condensation pipe is externally connected with a tee joint.

Preferably, the second condensation pipe is a straight condensation pipe.

Preferably, the first distillation elbow is further connected with a thermometer.

Preferably, the other connecting pipe opening of the second double-neck bottle is also connected with a feeding funnel.

Preferably, the heating source is an oil bath pan.

The technical advantages of the utility model reside in that vapor distillation plant simple structure, convenient to use conveniently regulate and control letting in and leading to out of comdenstion water and steam and material and water, have good heat preservation effect, prevent effectively that partial outlet from blockking up, eliminate the potential safety hazard, improve the effect of material separation and purification, are worth using widely in this field.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

the names of the parts corresponding to the numbers in the figure are respectively: 1-heating source, 2-water adding pipe, 3-three-necked bottle, 4-safety pipe, 5-first condenser pipe, 6-first distillation elbow, 7-thermometer, 8-first heat-preservation sleeve, 9-inlet pipe, 10-porous material placing plate, 11-first double-necked bottle, 12-second distillation elbow, 13-second condenser pipe, 14-second heat-preservation sleeve, 15-third distillation elbow, 16-second double-necked bottle and 17-feeding funnel.

Detailed Description

The invention will be further explained by means of specific embodiments with reference to the drawings, in which:

referring to fig. 1, an embodiment of an improved laboratory water vapor distillation device comprises a water vapor generation part, an extraction part and a collection part, wherein the water vapor generation part comprises a heating source 1, a three-necked bottle 3, a water adding pipe 2, a safety pipe 4, a first condensation pipe 5 and a first distillation elbow 6, the water adding pipe 2, the safety pipe 4 and the first condensation pipe 5 are respectively connected into three pipe connecting ports of the three-necked bottle 3, and the first distillation elbow 6 is connected to the upper part of the first condensation pipe 5. In the embodiment, the heating source 1 is an oil bath pan, oil is added after the oil bath pan is powered on, and then the three-necked bottle 3 is heated, so that the heating is fast and efficient. The first condenser pipe 5 is a spherical condenser pipe with the length of 5cm, the first condenser pipe 5 is further externally connected with a tee joint, cold water and hot steam can be switched to be introduced, and when the system is blocked and the pressure is increased, cold water can be introduced to reduce the temperature and the pressure of the system; at the initial stage of the reaction, hot steam is introduced to play a role in heat preservation and prevent water vapor from condensing, thereby accelerating the reaction process. The top of the first distillation elbow 6 is also connected with a thermometer 7 which can monitor the temperature of the water vapor generation part in real time.

The extraction part comprises a first heat-preservation sleeve 8, an inlet pipe 9, a first double-neck bottle 11, a porous material placing plate 10 and a second distillation elbow 12, wherein the inlet pipe 9 is introduced into the bottom of the first double-neck bottle 11 from a pipe connecting port, the first heat-preservation sleeve 8 is connected between the first distillation elbow 6 and the inlet pipe 9, the porous material placing plate 10 is suspended in the first double-neck bottle 11 and is positioned above an outlet of the inlet pipe 9, and the second distillation elbow 12 is connected into another pipe connecting port of the first double-neck bottle 11. In this embodiment, the body of the first double-necked bottle 11 has a double-layered hollow structure, which effectively improves the heat preservation effect. The porous flitch 10 of putting generally sets up 1~3 layers, and it has a plurality of pores to distribute on the flitch 10 is put to the porous, can make vapor evenly go upward from the bottom for material on the board is heated evenly and fully contacts with vapor, improves the productivity. In previous experimental devices, the material was placed directly on the bottom of the bottle, so that it was not completely contacted with steam, and the utilization rate of the material on the relatively upper portion was significantly higher than that of the material on the relatively lower portion. Further, the porous material placing plate 10 is provided with two layers, an upper layer plate can be opened, and materials can be conveniently placed on a lower layer plate. Specifically, the porous material placing plate 10 at the lower layer can be a glass laminate integrally formed with the first double-necked bottle 11, and a plurality of pores are formed on the glass laminate; the upper porous material placing plate 10 is an independent pore plate, a ring of annular edge is arranged on the inner wall of the first double-neck bottle 11, the outer ring of the upper porous material placing plate 10 is placed on the annular edge, and the operation of opening the upper porous material placing plate 10 is that the upper porous material placing plate is extended into the first double-neck bottle 11 by using tweezers to be obliquely uncovered.

The collecting part comprises a second condensation pipe 13, a second heat-preserving casing pipe 14, a third distillation elbow 15 and a second double-neck bottle 16, the third distillation elbow 15 is connected into a connecting pipe port of the second double-neck bottle 16, and the second condensation pipe 13 and the second heat-preserving casing pipe 14 are sequentially connected between the second distillation elbow 12 and the third distillation elbow 15. In this embodiment, the second condensation pipe 13 is a straight condensation pipe. The other nozzle of the second flask 16 is also connected to a hopper 17.

Before the components are assembled as shown in fig. 1, preparation is carried out by placing material samples, such as tobacco samples, on a porous material placing plate 10, placing them on both plates, and simultaneously placing 2/3 water in the three-necked bottle 3. When the device is used, a plug is inserted into the upper end of the safety tube 4, and the first condenser tube 5 is filled with hot steam while the three-necked bottle 3 is oil-bath heated. After the water is boiled, the plug above the safety pipe 4 is removed, the first condensation pipe 5 stops introducing hot steam, and the first heat-preservation sleeve 8 introduces hot steam to prevent the water steam from being condensed. Then, the condensed water is introduced into the second condensation duct 13 to condense the steam distillation product. When a blockage is found at the second insulating sleeve 14 or the second flask 16, hot steam of about 40 degrees is introduced into the second insulating sleeve 14 for insulation. When water overflows from the position of the safety pipe 4, the oil bath is quickly removed, and condensed water is introduced into the first condensation pipe 5 for cooling. In the experimental process, if the three-necked bottle 3 has less water, a proper amount of hot water can be supplemented through the water adding pipe 2.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention can be modified or altered without departing from the principles.

Claims (10)

1. An improved laboratory steam distillation device comprises a steam generation part, an extraction part and a collection part, and is characterized in that: the water vapor generation part comprises a heating source (1), a three-necked bottle (3), a water feeding pipe (2), a safety pipe (4), a first condensation pipe (5) and a first distillation elbow (6), wherein the water feeding pipe (2), the safety pipe (4) and the first condensation pipe (5) are respectively connected to three pipe connecting openings of the three-necked bottle (3), and the first distillation elbow (6) is connected to the upper part of the first condensation pipe (5);

the extraction part comprises a first heat-preservation sleeve (8), an inlet pipe (9), a porous material placing plate (10), a first double-neck bottle (11) and a second distillation elbow (12), wherein the inlet pipe (9) is introduced into the first double-neck bottle (11) from a pipe connecting port, the first heat-preservation sleeve (8) is connected between the first distillation elbow (6) and the inlet pipe (9), the porous material placing plate (10) is suspended in the first double-neck bottle (11) and positioned above an outlet of the inlet pipe (9), and the second distillation elbow (12) is connected into the other pipe connecting port of the first double-neck bottle (11);

the collecting part comprises a second condensation pipe (13), a second heat-insulating sleeve pipe (14), a third distillation elbow (15) and a second double-neck flask (16), the third distillation elbow (15) is connected into a pipe connecting port of the second double-neck flask (16), and the second condensation pipe (13) and the second heat-insulating sleeve pipe (14) are sequentially connected between the second distillation elbow (12) and the third distillation elbow (15).

2. The apparatus of claim 1, wherein: the bottle body of the first double-neck bottle (11) is of a double-layer hollow structure.

3. The apparatus of claim 1, wherein: the porous material placing plate (10) is provided with two layers, and the porous material placing plate (10) at least positioned on the upper layer is movably connected with the inner wall of the first double-neck bottle (11).

4. The apparatus of claim 1, wherein: the first condensation pipe (5) is a spherical condensation pipe.

5. The apparatus of claim 4, wherein: the length of the first condensation pipe (5) is 4-6 cm.

6. The apparatus of claim 1 or 4 or 5, wherein: the first condensation pipe (5) is externally connected with a tee joint.

7. The apparatus of claim 1, wherein: the second condensation pipe (13) is a straight condensation pipe.

8. The apparatus of claim 1, wherein: the first distillation elbow (6) is also connected with a thermometer (7).

9. The apparatus of claim 1, wherein: the other connecting pipe opening of the second double-neck bottle (16) is also connected with a feeding funnel (17).

10. The apparatus of claim 1, wherein: the heating source (1) is an oil bath pan.

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