CN209741102U - A backward flow type distillation plant for essential oil draws - Google Patents

Abstract

the utility model relates to an essential oil extraction technical field especially relates to a backward flow type distillation plant for essential oil extraction, including the retort body, the condenser pipe, oil water separator, level pressure mechanism and heating mechanism, install sample dish support in the retort body, the internal steam layer that divides into of sample dish support with the retort body, the solvent layer is two-layer, install the sample dish on the sample dish support, be provided with steam outlet on the pot cover of the retort body, steam outlet pegs graft and has the honeycomb duct, the retort body passes through honeycomb duct and oil water separator intercommunication, oil water separator's last port and the lower port intercommunication of condenser pipe, the valve is installed to oil water separator's lower extreme, level pressure mechanism includes drainage tube and level pressure pipe with the inside intercommunication of the retort body, the exit end of drainage tube inserts in the level pressure pipe, the level pressure pipe is located outside the retort body. The utility model discloses a level pressure device is arranged in the adjustment to stabilize distillation process in the internal pressure of distillation pot, avoids the internal pressure of distillation pot too high, produces the potential safety hazard.

Description

A backward flow type distillation plant for essential oil draws

Technical Field

The utility model relates to an essential oil extraction technical field especially relates to a backward flow type distillation plant for essential oil extraction.

Background

The cigarette flavoring additive has wide application and plays an important role in cigarette flavor compensation. The essence and spice added in the cigarette is usually plant essential oil, and is used for improving the taste of the cigarette and increasing the richness of aroma. The plant essential oil is extracted from the unique aromatic substances of the plants, and is extracted from flowers, leaves, roots, barks, fruits, seeds and the like of the herbaceous plants by distillation and squeezing. The steam distillation method is a common plant essential oil extraction method, water is selected as an extraction solvent, the action mechanism of the steam distillation method is the azeotropic action of water and essential oil, the essential oil is brought out by the evaporation of the water, then the water and the essential oil are condensed together, and the water layer is removed after the oil-water phase separation, so that the essential oil is obtained. Because the solvent and the acting medium water used in the method are nontoxic and harmless to people and environment, the steam distillation method is an environment-friendly, healthy and safe essential oil extraction method.

The steam distillation process has again mainly three main forms, namely water distillation, water distillation and steam distillation. The water distillation is suitable for the varieties such as roses, neroli and the like which are easy to adhere and agglomerate and block the water vapor penetration by direct water vapor distillation, and for the varieties such as lavender and the like containing esters, the hydrolysis is easy to occur, and the method is not suitable for use; the distillation on water isolates the raw materials from boiling water, thereby reducing hydrolysis; the steam distillation method is basically the same as the water distillation method, except that the steam source and pressure are different, the method does not add water into the pot, but the steam generated by the boiler is introduced into the lower part of the pot and passes through the porous plate and the raw materials above the porous plate to rise, so the hydrolysis effect is small, but the method has higher requirement on equipment conditions, needs to be additionally provided with steam generators such as boilers and the like, and is suitable for large-scale production.

The existing steam distillation method has the problem that the reaction is easy to occur in the distillation process to different degrees, such as the oxidation of substances such as unsaturated fatty acid, terpenoid and the like, the hydrolysis of ester, the Maillard reaction and the like, so that new substances are generated, and the flavor and the quality of the essential oil are changed. Although the existing water distillation can reduce the hydrolysis reaction to a certain extent, the effect is limited, and the condition that the steam passage is blocked by the distilled materials is easy to happen in the distillation process, so that the internal pressure is increased, and safety accidents are easy to happen.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a backward flow type distillation plant for essential oil extraction is used for adjusting through the level pressure device and stabilizes the distillation pot internal pressure in-process, avoids the distillation pot internal pressure too high, produces the potential safety hazard.

The utility model discloses an above-mentioned technical problem is solved to following technical means:

A reflux distillation device for extracting essential oil comprises a distillation pot body, a condensation pipe, an oil-water separator and a constant pressure mechanism, wherein a heating mechanism is installed at the bottom of the distillation pot body, a sample tray support is installed in the distillation pot body, the sample tray support divides the interior of the distillation pot body into a steam layer and a solvent layer, a sample tray used for containing distillation raw materials is installed on the sample tray support, the sample tray is a cylinder with an open top and a screen installed at the bottom, a steam outlet is arranged on a pot cover of the distillation pot body, a flow guide pipe is inserted into the steam outlet, the distillation pot body is communicated with the oil-water separator through the flow guide pipe, an upper port of the oil-water separator is communicated with a lower port of the condensation pipe, a valve is installed at the lower end of the oil-water separator, and the constant pressure mechanism comprises a drainage pipe and a constant pressure pipe which are communicated, the outlet end of the drainage tube is inserted into a constant pressure tube, and the constant pressure tube is positioned outside the distillation pot body.

Furthermore, the top of the constant pressure tube is open and filled with solution, and the outlet end of the drainage tube is positioned below the liquid level of the solution.

In the distillation process, along with the increase of steam, the internal pressure of distillation pot can grow gradually, and the setting of drainage tube and level pressure pipe can play the overvoltage protection effect to the distillation pot body to the internal pressure of balanced distillation pot avoids the occurence of failure.

Furthermore, the upper end of the constant pressure pipe is provided with an overflow port.

Furthermore, the inlet end of the drainage tube is connected with a liquid receiver which is positioned under the sample tray and fully covers the lower end of the sample tray.

In the distillation process, steam goes up to the sample dish, the inevitable meeting of material in the sample dish drips, contain some compositions in the material in this water droplet, for example sugar, amino acid etc. these compositions get into the aquatic of solvent layer, long-term heating can take place the reaction, produce new material, influence essential oil quality, connect the setting of liquid ware can receive the water droplet that the sample dish drips, and outside leading out the retort with the water droplet through the drainage tube, avoid it to heat the emergence reaction in the retort internal period, can effectual improvement essential oil quality.

furthermore, a return pipe communicated with the guide pipe is connected above the valve of the oil-water separator. The essential oil yield can be effectively improved by adopting a mode of combining water distillation and reflux.

Further, still install in the retort and prevent drenching the mechanism, prevent drenching the mechanism and include the cone funnel and the catheter of intercommunication each other, the cone funnel is located under the steam outlet, the exit end of catheter is located the solvent layer.

The reflux liquid in the reflux pipe flows into the distillation pot body from the steam outlet and may drop on the materials in the sample tray, and the liquid receiver is arranged below the sample tray, so that the reflux liquid flows through the sample tray, is collected by the liquid receiver and is guided out of the distillation pot body, and the purpose of full cyclic utilization cannot be achieved; secondly, the reflux liquid may reduce the temperature of the material, which affects the extraction efficiency. And the arrangement of the anti-drenching mechanism can prevent backflow liquid from dropping on the sample tray, and can also introduce the backflow liquid into the solvent for heating and recycling.

Further, install the stainless steel support on the pot cover of the retort body, the stainless steel support includes bracing piece and mounting bracket, conical funnel installs on the mounting bracket.

Further, the mounting bracket includes big ring and small circle ring, be connected with the connecting rod between big ring and the small circle ring, the small circle ring cup is established on conical hopper.

Further, the steam outlet is positioned right above the sample tray.

Further, a material changing port is formed in the upper end of the distillation pot body and located above the sample disc support, and a sealing door is hinged to the material changing port.

the steam outlet of the distillation device of the utility model is positioned right above the sample tray and is not contacted with the distillation raw material, thereby avoiding the phenomenon that the raw material blocks the steam passage; the distilling device of the utility model has the function of overvoltage protection to the whole distilling device through the constant pressure mechanism, balances the internal pressure of the distilling pot body and avoids the safety accident caused by overhigh internal pressure of the distilling pot body; the distilling device of the utility model is provided with the liquid receiver on the drainage tube, which is used for receiving the water drops dropped from the sample plate and leading the water drops out of the distilling pot body through the drainage tube, thus reducing the reaction in the distilling process to a certain extent and effectively improving the quality of essential oil; the utility model discloses a distillation plant has still set up and has been arranged in the mechanism is drenched in preventing that is arranged in directly leading-in solvent with the backwash liquid, avoids the backwash liquid to flow through the temperature that the sample dish reduced in the sample dish, can effectively improve extraction of essential oil efficiency.

Drawings

FIG. 1 is a schematic view showing the structure of a reflux type distillation apparatus for essential oil extraction described in example 1;

FIG. 2 is a schematic structural view of the mount of FIG. 1;

FIG. 3 is a schematic view showing the structure of a reflux type distillation apparatus for essential oil extraction described in example 2;

FIG. 4 is a schematic view showing the structure of a reflux type distillation apparatus for essential oil extraction described in example 3;

The device comprises a distillation pot body 1, a condensation pipe 2, an oil-water separator 3, a heating mechanism 4, a sample tray bracket 5, a drainage pipe 61, a constant pressure pipe 62, a liquid receiver 63, a mounting ring 7, a sample tray 8, a conical funnel 91, a liquid guide pipe 92, a snap ring 10, a steam outlet 11, a flow guide pipe 12, a support rod 13, a mounting frame 14, a large ring 141, a small ring 142, a valve 15, a return pipe 16, a connecting rod 17, a condensed water inlet 181, a condensed water outlet 182, a material changing port 19, a sealing door 20, a water level observation window 21, an overflow port 22, a mounting tray 23 and a support round rod 24.

Detailed Description

The invention will be described in detail with reference to the following drawings and specific embodiments:

example 1

As shown in fig. 1, the reflux-type distillation apparatus of the present embodiment includes a distillation pot body 1, a condensation pipe 2, an oil-water separator 3, a shower prevention mechanism, and a heating mechanism 4 for heating the distillation pot body 1, wherein the heating mechanism 4 may be a commonly used heating apparatus such as an induction cooker, an electric ceramic oven, or an oil bath pot, and is configured to evaporate water inside the distillation pot body 1 to form water vapor. Integrated into one piece has installation ring 7 on the inner wall of the retort body 1, install sample dish support 5 on the installation ring 7, sample dish support 5 is divided into the steam layer in with the retort body 1, the solvent layer is two-layer, install the sample dish 8 that is used for holding the distillation raw materials on the sample dish support 5, sample dish 8 is opened for the top, the drum of bottom installation screen cloth, the screen cloth can prevent that the distillation material from spilling, the mesh number of screen cloth is selected so that can make steam pass through for the standard, preferred scope is 40 ~ 100 meshes, it has snap ring 10 still to integrated into one piece on the circumference outer wall of sample dish 8, be used for installing sample dish 8.

Sample dish support 5 is the circular truncated cone structure, and the round hole has been seted up at its top, and the diameter of round hole slightly is greater than the diameter of sample dish 8, conveniently establishes sample dish 8 card in the round hole, and is seamless basically to establish on the round hole through snap ring 10 card, avoid sample dish 8 to drop. The diameter of the lower circle of the sample disc bracket 5 is the same as the inner diameter of the distillation pot body 1, and the sample disc bracket 5 can be clamped on the installation ring 7 or fixed on the installation ring 7 through screws to force water vapor to pass through the sample disc 8.

Be provided with the steam outlet 11 that communicates the 1 inside of the pot body 1 on the pot cover of the pot body 1, steam outlet 11 is located sample tray 8 directly over, so that the steam that has volatile essential oil can directly flow out from steam outlet 11 fast, steam outlet 11 is sealed and is pegged graft through the sealing plug and has honeycomb duct 12, the pot body 1 communicates with oil water separator 3 through honeycomb duct 12, the cover is equipped with the heat preservation on the honeycomb duct 12, reduce the inside and external heat exchange of honeycomb duct 12, oil water separator 3's last port and condenser pipe 2's lower port intercommunication, the last port of condenser pipe 2 seals, the comdenstion water interface that is close to oil water separator 3 on the condenser pipe 2 is comdenstion water entry 181, the comdenstion water interface of keeping away from oil separator 3. The lower end of the oil-water separator 3 is provided with a valve 15, the lower part of the oil-water separator 3 is connected with a return pipe 16 communicated with the guide pipe 12, and the return pipe 16 is used for returning water at the lower part of the oil-water separator 3 into the distillation pot body 1.

Specifically, the anti-drenching mechanism comprises a conical funnel 91 and a liquid guide tube 92 which are communicated with each other, the conical funnel 91 is positioned under the steam outlet 11, the maximum diameter size of the conical funnel 91 is far larger than that of the steam outlet 11, and the outlet end of the liquid guide tube 92 penetrates through the sample tray bracket 5 and is positioned in the solvent layer. In order to install the anti-showering mechanism, a stainless steel support used for supporting and installing the anti-showering mechanism is installed in the steam layer and comprises a support rod 13 and an installation frame 14, as shown in fig. 2, the installation frame 14 comprises a large circular ring 141 and a small circular ring 142, a connecting rod 17 is connected between the large circular ring 141 and the small circular ring 142, the connecting rod 17 can be two, three, four or more than four, so that the large circular ring 141 and the small circular ring 142 can be stably connected accurately, preferably three are arranged, and the small circular ring 142 is sleeved on the conical funnel 91. One end of the support rod 13 is welded on the large circular ring 141, and the other end is welded on the pot cover of the distillation pot body 1, and can also be welded on the sample plate bracket 5.

The distillation pot body 1 is provided with a material changing port 19 above the sample disc bracket 5, and the material changing port 19 is hinged with a sealing door 20. The material changing port 19 is arranged to facilitate taking out the sample tray 8 after distillation is finished, and the distilled materials are changed. In the distillation process, the material changing port 19 is sealed by the sealing door 20, so that the leakage of volatile essential oil is avoided.

The distillation pot body 1 is provided with a water level observation window 21 below the sample tray bracket 5. The water level observation window 21 is used for observing the water level so as to take water supplementing measures when water is deficient and ensure the continuous operation of the distillation process.

In addition, the retort body 1 is installed the inlet tube in sample dish support 5 below, installs the valve on the inlet tube to at any time to the inside moisturizing of retort body 1, guarantee that the distillation lasts stably and goes on.

Example 2

As shown in fig. 3, the reflux-type distillation apparatus of the present embodiment includes all the structures of embodiment 1, and on the structure basis of embodiment 1, a constant pressure mechanism is further provided, the constant pressure mechanism includes a drainage tube 61 and a constant pressure tube 62 which are communicated with the inside of the distillation pot body 1, the outlet end of the drainage tube 61 is inserted into the constant pressure tube 62, the constant pressure tube 62 is located outside the distillation pot body 1, the top of the constant pressure tube 62 is open and is filled with a solution, the outlet end of the drainage tube 61 is located below the liquid level of the solution, so as to balance the pressure inside the distillation pot body 1, thereby avoiding potential safety hazards caused by excessive pressure in the distillation process, and the overflow port 22 is provided at the upper end of the constant. The inlet connection of drainage tube 61 connects liquid ware 63, it is located under sample tray 8 to connect liquid ware 63, and with the sample tray 8 lower extreme all standing, the preferential design of structure that connects liquid ware 63 is the funnel, collect with the liquid flow that conveniently receives, install the support frame that is used for supporting to connect liquid ware 63 in the solvent layer, the support frame includes mounting disc 23 and support round bar 24, the structure of mounting disc 23 is the same with the structure of mounting bracket 14, the one end welding that supports round bar 24 is on mounting disc 23, the other end welding is in the bottom in the retort body 1.

Example 3

As shown in fig. 4, the present embodiment is an existing water distillation and extraction device, which is not provided with the backflow structure, the constant pressure mechanism and the anti-drenching mechanism of the present invention.

The plant essential oil extraction devices of examples 1, 2 and 3 were used for carrying out essential oil distillation extraction experiments, mixtures of 100g of lavender and 100g of tobacco powder are respectively added into sample trays of each extraction device as distillation raw materials, the distillation is carried out for 2 hours, the essential oil yield of each device is calculated after the distillation is finished, the essential oil components are analyzed by GC-MS, and the relative percentage content of linalyl acetate and the relative percentage content of furfural are calculated, and are shown in Table 1. The content of linalyl acetate is relevant with the hydrolysis of ester, and furfural content is relevant with the maillard reaction, and the light degree of taking place the reaction in the distillation process is represented to the relative percentage content of these two substances, can see from this, the utility model discloses an extraction element can effectively reduce the reaction that takes place in the distillation process, improves the essential oil quality.

TABLE 1

The comparison of the data in table 1 shows that the distillation apparatuses in example 1 and example 2 have reflux structures, so that the yield of the essential oil is significantly improved, the yield of the essential oil in the distillation apparatus in example 1 is relatively improved by 20.29% compared with that in example 3, and the yield of the essential oil in the distillation apparatus in example 2 is relatively improved by 27.53% compared with that in example 3, which indicates that the design of the reflux structures can effectively improve the yield of the essential oil; comparing the data of example 1 and example 2, the relative percentage of linalyl acetate in example 2 changed by-4.83% from that in example 1, indicating that the ester hydrolysis reaction was also somewhat reduced by increasing the constant pressure mechanism. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims. The technology, shape and construction parts which are not described in detail in the present invention are all known technology.

Claims (10)

1. A reflux distillation device for extracting essential oil comprises a distillation pot body, a condensation pipe and an oil-water separator, wherein a heating mechanism is arranged at the bottom of the distillation pot body, the reflux distillation device is characterized by further comprising a constant pressure mechanism, a sample disc support is arranged in the distillation pot body, the sample disc support divides the interior of the distillation pot body into a steam layer and a solvent layer, a sample disc for containing distillation raw materials is arranged on the sample disc support, the sample disc is a cylinder with an open top and a screen mesh arranged at the bottom, a steam outlet is arranged on a pot cover of the distillation pot body, a flow guide pipe is inserted into the steam outlet, the distillation pot body is communicated with the oil-water separator through the flow guide pipe, an upper port of the oil-water separator is communicated with a lower port of the condensation pipe, a valve is arranged at the lower end of the oil-water separator, the constant pressure mechanism comprises a drainage pipe and a constant pressure pipe which, the outlet end of the drainage tube is inserted into a constant pressure tube, and the constant pressure tube is positioned outside the distillation pot body.

2. A reflux distillation apparatus for essential oil extraction as set forth in claim 1, wherein the pressure tube is open at the top and contains the solution, and the outlet end of the draft tube is located below the solution level.

3. A reflux distillation apparatus for essential oil extraction as claimed in claim 2, wherein the upper end of the constant pressure tube is provided with an overflow port.

4. A reflux distillation apparatus for essential oil extraction as claimed in claim 3, wherein the inlet end of the drainage tube is connected with a liquid receiver, which is located right under the sample tray and covers the lower end of the sample tray completely.

5. the reflux distillation apparatus for essential oil extraction as set forth in claim 1, wherein the oil-water separator is connected with a reflux pipe above the valve and in communication with the draft tube.

6. A reflux distillation unit for essential oil extraction as claimed in any one of claims 1 to 5, wherein a dripping prevention mechanism is further installed in the distillation pot body, the dripping prevention mechanism comprises a cone funnel and a liquid guide pipe which are communicated with each other, the cone funnel is positioned right below the steam outlet, and the outlet end of the liquid guide pipe is positioned in the solvent layer.

7. The reflux-type distillation apparatus for essential oil extraction as claimed in claim 6, wherein a stainless steel bracket is installed on a pot cover of the distillation pot body, the stainless steel bracket comprises a support rod and a mounting bracket, and the cone-shaped funnel is installed on the mounting bracket.

8. A reflux distillation apparatus for essential oil extraction as claimed in claim 7, wherein the mounting bracket comprises a large ring and a small ring, a connecting rod is connected between the large ring and the small ring, and the small ring is sleeved on the conical funnel.

9. A reflux distillation apparatus for essential oil extraction as claimed in claim 8, wherein the steam outlet is located directly above the sample tray.

10. The reflux-type distillation device for essential oil extraction as claimed in claim 9, wherein the upper end of the distillation pot body is provided with a material changing port, the material changing port is positioned above the sample tray support, and the material changing port is hinged with a sealing door.