A device for the dehydration of peppermint oil

Abstract

The utility model discloses a kind of peppermint oil dehydration treatment devices, including outer tank and the inner tank for containing initial peppermint oil in outer tank body, the top of the inner tank is provided with condensation recovery structure that can reduce water vapor condensation backflow to inner tank;The condensation recovery structure includes the top cover integrally formed with the inner tank and the heating structure for heating top cover;The utility model is by setting inverted round trapezoidal top cover in the top of inner tank, reduce the open area of the top of inner tank, make the water vapor mainly concentrated in the exhaust port of top cover top discharge, reduce the amount of condensate directly dropping back in crude oil in inner tank.Meanwhile, PTC heater is arranged on the outer wall of top cover to continuously heat, reduce the condensation amount of water vapor in the inner wall of top cover, reduce condensate backflow.By setting wide and shallow annular receiving disc structure instead of traditional narrow and long inclined flow channel, ensure that condensate water mixed with peppermint oil and water vapor can converge and smoothly discharge.

Description

Technical Field

[0001] This utility model relates to the field of peppermint oil production technology, specifically to a peppermint oil dehydration treatment device. Background Technology

[0002] Peppermint oil is a volatile essential oil extracted from the leaves, stems, and flower spikes of the peppermint plant. The most common method for extracting essential oil from peppermint plants is steam distillation. In this method, steam carries the volatile essential oil components from the plant into a still, and the oil is then obtained through condensation and oil-water separation.

[0003] Despite oil-water separation, a small amount of tiny water droplets inevitably dissolve in the crude oil. This affects the quality, stability, and subsequent processing of the essential oil. Therefore, the separated peppermint oil needs to be dehydrated. However, currently used dehydration devices tend to accumulate distilled water at the top of the device, and there is a problem that the distilled water droplets falling into the peppermint oil can cause backflow of distilled water, affecting the dehydration efficiency of the peppermint oil.

[0004] A search revealed a menthol grading and dehydration device in patent application publication number CN222092589U, which includes a dehydrator shell, a feed inlet, a distillation chamber, a heating ring, and a collection pipe. The dehydrator shell has an annular inclined flow channel. Two arc-shaped scrapers are used to scrape and clean the menthol oil adhering to the inner wall of the expansion tank, so that the menthol oil adhering to the expansion tank can flow more quickly into the annular inclined flow channel for collection and discharge.

[0005] The aforementioned patent employs an arc-shaped scraper at the top of the dehydration device to scrape the inner wall of the top of the device, causing the distilled water at the top of the device to be scraped into the flow channel for discharge, thus preventing the distilled water from flowing back. However, the condensed water is prone to falling off when it is scraped, posing a risk of returning to the distillation chamber and affecting the separation effect. Furthermore, the condensed water carrying peppermint oil is prone to adhering to the inner wall of the narrow and long inclined flow channel after entering it, posing a risk of clogging the flow channel. Utility Model Content

[0006] The purpose of this invention is to provide a peppermint oil dehydration treatment device. By setting an inverted frustum-shaped top cover on the top of the inner tank, water vapor is discharged from the top of the top cover and condenses on the top of the outer tank before entering the receiving tray. Since the open area of ​​the top of the inner tank is reduced, the amount of condensate falling into the inner tank can be reduced. In addition, the heating structure on the outer wall of the top cover can reduce the condensation of water vapor on the inner wall of the top cover and reduce backflow. The wide and shallow receiving tray can avoid blockage caused by the long and narrow path of condensate.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a peppermint oil dehydration treatment device, comprising an outer tank and an inner tank fixed inside the outer tank for holding raw peppermint oil, wherein the top of the inner tank is provided with a condensation recovery structure that can reduce the backflow of water vapor into the inner tank after condensation.

[0008] The condensation recovery structure includes a top cover integrally formed with the inner tank and a heating structure for heating the top cover. The top cover is shaped like an inverted frustum. The top of the top cover is provided with an exhaust port for water vapor to be discharged. A receiving tray for collecting water vapor is provided between the outer wall of the top cover and the inner wall of the inner tank.

[0009] Preferably, the receiving tray is arranged in a ring shape and is inclined relative to the outer tank. An annular groove is formed on the upper surface of the receiving tray, and a water outlet groove is formed on one side wall of the receiving tray for communicating with the annular groove.

[0010] Preferably, the outer wall of the outer tank is provided with a water outlet to facilitate the outflow of water vapor after condensation in the receiving tray. The water outlet is connected to the water outlet trough, and the outer wall of the outer tank is connected to an exhaust pipe for water vapor to be discharged.

[0011] Preferably, the heating structure is configured as a PTC heater made of a positive temperature coefficient ceramic material, and the PTC heater is fixed to the inclined surface of the outer wall of the top cover.

[0012] Preferably, the peppermint oil dehydration treatment device further includes a heating element installed at the bottom of the outer tank to heat the inner tank, and a stirring structure installed at the top of the outer tank to stir the inside of the inner tank.

[0013] Preferably, the heating element includes a heating wire connected to a power source and a heat-conducting plate fixed to the outside of the heating wire, the heat-conducting plate being located at the bottom of the inner tank.

[0014] Preferably, the stirring structure includes a stirring motor, which is mounted on the top of the outer tank by screws, and the output end of the stirring motor is fixed with a stirring rod with a stirring paddle on the outer wall.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention reduces the open area of ​​the inner tank top by installing an inverted frustum-shaped top cover, allowing rising water vapor to concentrate at the vent on the top of the cover and thus reducing the amount of condensate dripping directly back into the crude oil in the inner tank. Simultaneously, a PTC heater is installed on the outer wall of the top cover for continuous heating, further reducing the amount of water vapor condensing on the inner wall of the top cover and minimizing condensate backflow, thereby improving oil-water separation efficiency.

[0017] By replacing the traditional narrow and long inclined flow channel with a wide and shallow annular receiving tray structure, the condensate mixed with peppermint oil and water vapor can be collected and discharged smoothly, avoiding blockage. Attached Figure Description

[0018] Figure 1 This is an isometric view of the condensation recovery structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the outer can of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the receiving tray of this utility model.

[0021] In the diagram: 1. Outer tank; 2. Inner tank; 3. Condensation recovery structure; 301. Top cover; 302. Heating structure; 303. Exhaust port; 304. Receiving tray; 3041. Annular groove; 3042. Water outlet groove; 101. Water outlet; 102. Exhaust pipe; 4. Heating element; 5. Stirring structure; 401. Heating wire; 402. Heat-conducting plate; 501. Stirring motor; 502. Stirring rod; 503. Stirring paddle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a peppermint oil dehydration treatment device, including an outer tank 1 and an inner tank 2 fixed inside the outer tank 1 for holding raw peppermint oil. The top of the inner tank 2 is provided with a condensation recovery structure 3 that can reduce the backflow of water vapor after condensation to the inner tank 2.

[0024] By setting up a condensation recovery structure 3 to collect and export the condensate from the top of the outer tank 1, the backflow of condensate into the crude oil in the inner tank 2 is minimized, and the collection path is prevented from becoming blocked.

[0025] The condensation recovery structure 3 includes a top cover 301 integrally formed with the inner tank 2 and a heating structure 302 for heating the top cover 301. The top cover 301 is shaped like an inverted frustum. The top of the top cover 301 is provided with an exhaust port 303 for water vapor to be discharged. A receiving tray 304 for collecting water vapor is provided between the outer wall of the top cover 301 and the inner wall of the inner tank 2.

[0026] The top cover 301 is shaped like an inverted frustum, which reduces the open area at the top of the inner tank 2. This forces the water vapor carrying peppermint oil that rises from the inner tank 2 to mainly converge and flow to the exhaust port 303 at the top of the top cover 301, reducing the amount of condensate that drips directly back into the crude oil in the inner tank 2 below.

[0027] The receiving tray 304 is arranged in a ring shape and is inclined relative to the outer tank 1. An annular groove 3041 is formed on the upper surface of the receiving tray 304, and a water outlet groove 3042 communicating with the annular groove 3041 is formed on one side wall of the receiving tray 304. The annular receiving tray 304, located between the outer wall of the top cover 301 and the inner wall of the outer tank 1, is wider and shallower than a traditional inclined flow channel, such as... Figure 3 As shown. Water vapor carrying peppermint oil discharged from the exhaust port 303 condenses on the relatively cool inner wall of the top of the outer tank 1. The resulting condensate droplets, containing a small amount of peppermint oil and water, will drip naturally or be guided onto the annular receiving tray 304 below. The annular groove 3041 on the surface of the receiving tray 304 collects the dripping condensate.

[0028] The outer wall of the outer tank 1 is provided with an outlet 101 to facilitate the outflow of water vapor after condensation in the receiving tray 304. The outlet 101 is connected to the water outlet 3042, and the outer wall of the outer tank 1 is connected to an exhaust pipe 102 for water vapor to be discharged.

[0029] The outlet 101 is directly connected to the outlet tank 3042 of the receiving pan 304, serving as the final outlet for the condensate, allowing the collected condensate to be discharged outside the device for treatment or recycling. The exhaust pipe 102 connects to the top space of the outer tank 1, serving as the main discharge channel for water vapor and uncondensed gases. The water vapor discharged from the exhaust port 303 of the top cover 301 is ultimately discharged to the external condensation recovery system through the exhaust pipe 102.

[0030] The heating structure 302 is configured as a PTC heater made of positive temperature coefficient ceramic material, and the PTC heater is fixed to the inclined surface of the outer wall of the top cover 301.

[0031] The PTC heater fixed on the inclined surface of the outer wall of the inverted frustum-shaped top cover 301 continuously heats the top cover 301. The heating keeps the outer wall of the top cover 301 at a high temperature and transfers the heat to the inner wall of the top cover 301, reducing the possibility of water vapor condensing when flowing through the inner wall of the top cover 301, and further reducing the risk of condensate forming on the inner wall of the top cover 301 and dripping back into the inner tank 2.

[0032] The heating element of a PTC heater can be cut or customized according to the required fan-shaped angle and curvature. Designing a PTC heater as a fan-shaped tile to fit complex curved surfaces is a very mature and common industrial application, widely used in pipes, valves, containers, etc. that require antifreeze or anti-condensation, which will not be elaborated further.

[0033] The peppermint oil dehydration treatment device also includes a heating element 4 installed at the bottom of the outer tank 1 to heat the inner tank 2, and a stirring structure 5 installed at the top of the outer tank 1 to stir the inside of the inner tank 2.

[0034] The heating element 4 includes a heating wire 401 connected to a power source and a heat-conducting plate 402 fixed outside the heating wire 401. The heat-conducting plate 402 is located at the bottom of the inner tank 2.

[0035] The heating element 4 located at the bottom of the outer tank 1 generates heat when energized, and transfers the heat to the bottom of the inner tank 2 through the heat conduction plate 402. This causes the tiny water droplets dissolved in the peppermint oil to evaporate upon heating, turning into water vapor that escapes upwards, thereby achieving dehydration.

[0036] The stirring structure 5 includes a stirring motor 501, which is mounted on the top of the outer tank 1 by screws. The output end of the stirring motor 501 is fixed with a stirring rod 502 with a stirring paddle 503 on its outer wall.

[0037] The stirring structure 5 continuously mixes and circulates the hot oil at the bottom of the inner tank 2 with the cold oil at the top, ensuring uniform heating of the entire oil layer and avoiding localized overheating or underheating. At the same time, the disturbance generated by stirring increases the contact area and interface renewal rate between the oil and the tiny water droplets, which is beneficial for the tiny water droplets encased in the oil to absorb heat and vaporize more quickly.

[0038] When in use, the heating element 4 located at the bottom of the outer can 1 is powered on to generate heat, which is then transferred to the bottom of the inner can 2 through the heat conduction plate 402 to heat the peppermint oil in the inner can 2.

[0039] The stirring motor 501 installed on the top of the outer tank 1 drives the stirring rod 502 to rotate, and the stirring paddle 503 fixed on the outer wall of the stirring rod 502 rotates accordingly, stirring the peppermint oil in the inner tank 2.

[0040] Water vapor flows upward and is collected by the inverted frustum-shaped top cover 301, and is discharged from the exhaust port 303 at the top of the top cover 301. The PTC heater heats the top cover 301, reducing condensation on its inner wall and further suppressing the backflow of condensate.

[0041] The discharged water vapor condenses on the cooler inner wall at the top of the outer tank 1. The condensate drips into the wide and shallow annular receiving tray 304 below, where it gathers in the annular groove 3041 and flows smoothly to the outlet tank 3042 due to the inclination angle of the receiving tray 304, and is finally discharged from the device through the outlet 101; the uncondensed gas is discharged through the exhaust pipe 102.

[0042] Compared to the menthol grading and dehydration device disclosed in patent application number CN222092589U, this device can not only reduce water vapor backflow into peppermint oil, but also avoid condensate blockage caused by the long and narrow collection path.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A peppermint oil dehydration treatment device, characterized in that: It includes an outer tank (1) and an inner tank (2) fixed inside the outer tank (1) for holding peppermint oil. The top of the inner tank (2) is provided with a condensation recovery structure (3) that can reduce the backflow of water vapor after condensation to the inner tank (2). The condensation recovery structure (3) includes a top cover (301) integrally formed with the inner tank (2) and a heating structure (302) for heating the top cover (301). The top cover (301) is in the shape of an inverted frustum. The top of the top cover (301) is provided with an exhaust port (303) for water vapor to be discharged. A receiving tray (304) for collecting water vapor is provided between the outer wall of the top cover (301) and the inner wall of the inner tank (2).

2. The peppermint oil dehydration treatment device according to claim 1, characterized in that: The receiving tray (304) is arranged in a ring shape and is inclined relative to the outer tank (1). The upper surface of the receiving tray (304) is provided with an annular groove (3041) and a water outlet groove (3042) is provided on one side wall of the receiving tray (304) for communicating with the annular groove (3041).

3. The peppermint oil dehydration treatment device according to claim 2, characterized in that: The outer wall of the outer tank (1) is provided with a water outlet (101) to facilitate the outflow of water vapor after condensation in the receiving tray (304). The water outlet (101) is connected to the water outlet trough (3042). The outer wall of the outer tank (1) is connected to an exhaust pipe (102) for water vapor to be discharged.

4. The peppermint oil dehydration treatment device according to claim 3, characterized in that: The heating structure (302) is configured as a PTC heater made of positive temperature coefficient ceramic material, and the PTC heater is fixed to the inclined surface of the outer wall of the top cover (301).

5. The peppermint oil dehydration treatment device according to claim 4, characterized in that: The peppermint oil dehydration treatment device also includes a heating element (4) installed at the bottom of the outer tank (1) to heat the inner tank (2), and a stirring structure (5) for stirring the inside of the inner tank (2) is installed at the top of the outer tank (1).

6. The peppermint oil dehydration treatment device according to claim 5, characterized in that: The heating element (4) includes a heating wire (401) connected to a power source and a heat-conducting plate (402) fixed outside the heating wire (401), the heat-conducting plate (402) being located at the bottom of the inner tank (2).

7. The peppermint oil dehydration treatment device according to claim 5, characterized in that: The stirring structure (5) includes a stirring motor (501), which is mounted on the top of the outer tank (1) by screws. The output end of the stirring motor (501) is fixed with a stirring rod (502) with a stirring paddle (503) on the outer wall.

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