CN202096785U - Depressurizing ultrasonic combination extraction device - Google Patents

Abstract

The utility model discloses a decompression ultrasonic combined extraction device, comprising an extraction tank, a condenser, a cooler, a gas-liquid separation device for keeping the extraction tank in a vacuum state, an extraction tank, a condenser, a cooler, a gas-liquid The separation devices are connected end to end, and a circulation loop is formed through pipelines. It is characterized in that an ultrasonic generating device and a stirring device are installed under the liquid surface in the tank body of the extraction tank. The utility model can keep the extraction always carried out under a certain degree of vacuum, reach the boiling state at a lower temperature, shorten the extraction time, improve the product yield and quality, and maintain the activity of natural substances; the addition of ultrasonic equipment can further shorten the extraction time, Moreover, the ultrasonic wave is easier to dissolve the substances in the cell wall, which greatly improves the product yield. This decompression ultrasonic combination device has a huge application market in the extraction process.

Description

A decompression ultrasonic combined extraction device

technical field

The utility model relates to an extracting device, in particular to a combined extracting device.

Background technique

Most of the ingredients in natural resources are active and exist in large quantities in cells. Too low a temperature is not conducive to the dissolution of the extract, and too high a temperature will cause the extract to lose its activity. Therefore, the quality of the extract is not high and the efficiency is low, which is still a limitation of natural Bottleneck problem for full development of extracts.

At present, normal pressure and micro-pressure processes are mostly used for extraction. Under these two processes, the boiling point temperature of the extract is relatively high, and many natural active ingredients will lose their activity, and some may even react to form other substances. The method of adopting normal temperature impregnation or pressurized percolation will take a long time, the efficiency is low, and the economic benefit is not high.

The patent with the application number 200420024138.7 involves a decompression extraction device for extracting traditional Chinese medicine. Although this device solves the problem of reflux of the decompression extraction solvent, it uses filters and circulating pumps in the entire device to achieve forced reflux. Yes, although this can enhance the uniformity of the material liquid, it will cause too much foam. Moreover, the cross-sectional area of the balance valve between the upper and lower tanks of the receiving tank in this device is large, and there is more liquid accumulation, which easily affects the concentration of the extraction liquid solvent and changes greatly, ultimately affecting the efficiency and quality of extraction. In addition, most of the natural active ingredients are intracellular substances. This vacuum extraction device still belongs to the solvent extraction method, and the extraction rate of natural active substances is still not very high, and the extraction time is basically more than one hour, which takes a long time.

The patent with the application number CN200420084394.5 relates to a multi-purpose ultrasonic countercurrent circulation leaching device. A circulation connection pipe is arranged around the tank body, so that the material in the tank repeatedly flows countercurrently through the ultrasonic field in the circulation connection pipe, thereby greatly improving the ultrasonic extraction efficiency. It can also be used for other purposes such as ultrasonic mixing, dispersion, emulsification and ultrasonic strengthening reaction. The patent with the application number CN02100522.2 relates to an ultrasonic extraction system for solid-liquid extraction. Multiple sets of ultrasonic vibrators are installed on the wall of the extraction container such as a polygonal prism such as a hexagonal prism or an octagonal prism, so that the power of the ultrasonic vibrators can be obtained. In addition, the pulsating reciprocating pump is used to make the material to be extracted move intermittently in the ultrasonic extraction device, which can solve the problem of material sedimentation in the container, thereby improving production efficiency and realizing continuous production. The patent with the application number CN201020145458.3 relates to an ultrasonic extraction heating device with a steam jacket. Since an ultrasonic vibrator is installed on the extraction tank, the medicinal materials in the extraction tank can be extracted at low temperature, thereby maximizing the The active ingredients in the medicinal materials are protected. The patent with the application number CN200520021991.8 involves a double-helix continuous countercurrent ultrasonic extraction device. There are two parallel reverse helical shafts in the obliquely placed leaching chamber. The outer wall of the leaching chamber is horizontal and 0-90 degrees from the horizontal There are several sets of ultrasonic transducers installed in the lower part, which can realize the continuous countercurrent leaching process stably by using the cavitation wall-breaking effect of ultrasonic waves and mechanical vibration, so as to keep the energy difference between the internal and external soluble components of the raw materials to the greatest extent and improve the total yield. Improve the leaching rate and efficiency, reduce the amount of solvent used, and reduce the extraction coefficient. These devices are all ultrasonic extraction devices used alone under normal pressure and micro pressure, and are not combined with other efficient extraction methods.

Contents of the invention

In order to solve the defects of the low extraction efficiency of the decompression extraction device in the prior art, and the ultrasonic devices are all used alone under normal pressure or micro pressure, the utility model provides a decompression ultrasonic combined extraction device, which can not only improve the extraction The product quality of the material can be improved, and the extraction efficiency can be improved.

The technical scheme of the utility model is: a combined decompression ultrasonic extraction device, including an extraction tank, a condenser, a cooler, a gas-liquid separation device for keeping the extraction tank in a vacuum state, an extraction tank, a condenser, and a cooler . The gas-liquid separation devices are connected end to end, and a circulation loop is formed through pipelines. It is characterized in that an ultrasonic generating device and a stirring device are installed under the liquid surface in the tank body of the extraction tank. `` ``

The gas-liquid separation device is composed of a gas-liquid separator and a reflux tank. The top of the gas-liquid separator is provided with a feed pipe to accept the liquid from the cooler, and a feed valve is arranged on it to control the feed. The material pipe extends into the lower part of the gas-liquid separator, and the upper part of the gas-liquid separator is connected with the vacuum degree control device to control the vacuum degree of the whole device. The upper part of the gas-liquid separator is connected with the upper part of the return tank through a pipeline. There is a first vent valve and a second vent valve on the pipeline, and a valve is provided between the first vent valve and the second vent valve to connect to the atmosphere or the solvent storage tank, and the bottom of the gas-liquid separator leads to the return tank The discharge pipeline is also provided with a first non-return valve for controlling the discharge to the reflux tank; the top of the reflux tank is provided with a feed pipe for receiving the liquid from the gas-liquid separator, and the feed pipe extends into the In the lower half of the tank body, a second check valve is provided on the discharge pipeline leading to the extraction tank at the bottom of the reflux tank to control the discharge to the extraction tank.

The vacuum degree control device includes a pressure regulating valve, a vacuum valve and a vacuum pump, the vacuum valve is used to control the connection of the vacuum pump, the pressure regulating valve is connected to the atmosphere, and the vacuum degree of the whole device is adjusted through the opening. the

The reflux tank is also provided with a visual liquid level gauge in the reflux tank.

The extraction tank is also provided with a visual liquid level gauge for the extraction tank.

Beneficial effect:

1. The utility model integrates the three extraction technologies of low temperature, decompression and ultrasonic. On the one hand, it ensures the activity of the extract, saves the solvent, and protects the environment; the decompression makes the extraction always reach a boiling state at a lower temperature. On the one hand, it improves the extraction rate of the extract and shortens the extraction time. It solves the problems that the extraction temperature is too high during the extraction process, the activity of the extracted components is severely damaged, the solvent of the extraction solution is consumed, the time is long, and the extraction rate is not high.

2. Since the check valve is set on the pipeline, the cross-sectional area is relatively small, so it is not easy to cause liquid accumulation, and the feeding port is as close to the bottom as possible, so that the liquid can flow into the pipeline more easily. Minimizing the effusion allows the extraction to be carried out at a certain concentration and volume of the extraction solvent. Moreover, when the solvent is a volatile liquid, it can also be added to ensure that the extraction is carried out at a certain concentration.

3. The utility model uses ultrasound and stirring to mix the extracted materials, which does not require a circulating pump for forced circulation, and the mixing is more uniform without producing foam. The extraction time can also be further shortened to make the extract easy to dissolve and improve the product yield.

Description of drawings

Fig. 1 schematic diagram of the process flow of the utility model device.

Fig. 2 is a structural schematic diagram of the gas-liquid separator and the reflux tank of the utility model.

Among them, 1 is the extraction tank, 2 is the ultrasonic generator, 3 is the stirring device, 4 is the condenser, 5 is the cooler, 6 is the vacuum pump, 7 is the gas-liquid separator, 8 is the reflux tank, and 9 is the liquid level of the extraction tank Meter, 10 is the feed valve, 11 is the pressure regulating valve, 12 is the vacuum valve, 13 is the first ventilation valve, 14 is the valve, 15 is the second ventilation valve, 16 is the first non-return valve, 17 is the second check valve Reverse valve, 18 are visual liquid level gauges of the return tank.

Detailed ways

A decompression ultrasonic combined extraction device, comprising an extraction tank 1, a condenser 4, a cooler 5, a gas-liquid separation device for keeping the extraction tank 1 in a vacuum state, an extraction tank 1, a condenser 4, a cooler 5, The gas-liquid separation devices are connected end to end and form a circulation loop through pipelines. The extraction tank 1 is provided with an ultrasonic generator 2 and a stirring device 3 under the liquid surface in the tank. The utility model can not only keep the extraction always carried out under the low-temperature boiling state with a certain degree of vacuum and concentration to ensure product quality, but also improve the extraction rate of natural products and shorten the extraction time by using modern ultrasonic extraction technology. The extraction tank 1 is equipped with an ultrasonic generator and a stirring device, and the ultrasonic vibrator and the stirring paddle are arranged under the inner liquid level of the extraction tank 1, so that the liquid in the extraction tank can be kept uniform, preventing too much foam, and the plant Cell crushing improves the extraction rate and speeds up the extraction. An extraction tank liquid level gauge 9, a vacuum gauge and a thermometer are also arranged outside the tank, which can observe the liquid level, vacuum degree and temperature in the extraction tank respectively. ``

The gas-liquid separation device is composed of a gas-liquid separator 7 and a reflux tank 8, the top of the gas-liquid separator 7 is provided with a feed pipe to accept the liquid from the cooler 5, and a feed valve 10 is provided on it for To control the feeding, the feeding pipe extends into the lower part of the gas-liquid separator 7, and the upper part of the gas-liquid separator 7 is connected with a vacuum degree control device to control the vacuum degree of the whole device. The upper part of the gas-liquid separator 7 is connected with the upper part of the return tank 8 through a pipeline, and a first vent valve 13 and a second vent valve 15 are arranged on the pipeline, and a vent valve 13 and a second vent valve 15 are arranged between the first vent valve 13 and the second vent valve 15. The valve 14 is used to connect to the atmosphere or the solvent storage tank, and a first check valve 16 is also provided on the discharge pipeline leading to the reflux tank 8 at the bottom of the gas-liquid separator 7 to control the discharge to the reflux tank 8; The first non-return valve 16 should be located near the reflux tank 8, and the diameter of the discharge pipeline used should be thinner, preferably within φ 4 mm-10 mm. When the material in the gas-liquid separator 7 reaches a certain amount, the check valve is automatically opened, and the material will flow into the return tank 8, which can minimize the accumulation of liquid. The top of the reflux tank 8 is provided with a feed pipe for receiving the liquid from the gas-liquid separator 7, the feed pipe extends into the lower half of the tank body, and leads to the discharge of the extraction tank 1 at the bottom of the reflux tank 8. The pipeline is provided with a second check valve 17 for controlling the discharge to the extraction tank 1 . The discharge port of the feed pipe of the gas-liquid separator 7 should be set as close to the bottom as possible, so that the condensed liquid will not be drawn out by the vacuum pump together with the gas, which can reduce loss, and the discharge port of the feed pipe should be as close as possible. Close to the bottom, so that the liquid can be concentrated at the bottom of the gas-liquid separator 7 as much as possible, and enter the discharge pipeline connected to the reflux tank 8. When a certain amount is reached, the first check valve will be opened back, and the liquid will enter the reflux tank 8. The feed outlet in the reflux tank 8 is arranged at the lower part of the tank body, also in order to reduce loss, the liquid is concentrated on the bottom of the reflux tank 8 as much as possible, and enters the pipeline.

Described vacuum control device comprises pressure regulating valve 11, vacuum valve 12 and vacuum pump 6, and vacuum valve 12 is used to control the communication of vacuum pump, and pressure regulating valve 11 is communicated with atmosphere, regulates the vacuum degree of whole device by opening. the

The reflux tank 8 is also provided with a visual liquid level gauge 18 for the reflux tank.

The extraction tank 1 is also provided with an extraction tank visual level gauge 9 .

When working, the feed valve 10 and the vacuum valve 12 are normally open valves, and the pressure regulating valve 11 is open to the atmosphere, and the opening can be adjusted according to the pressure requirements in the extraction tank 1, so that the entire extraction system forms a vacuum, and the feed liquid can easily enter the gas-liquid separator 7. The first ventilation valve 13 and the second ventilation valve 15 are normally open, and the valve 14 is closed, so that the vacuum degree in the gas-liquid separator 7 and the return tank 8 is basically consistent, and the material liquid can open the second ventilation valve with a small potential difference. A check valve 16 flows into the return tank 8 . If there is more liquid in the return tank 8, the first ventilation valve 13 can be closed, the valve 14 can be opened to connect to the atmosphere, and the feed liquid can flow into the extraction tank 1 through the second check valve 17. If the solvent is highly volatile, the condenser 4 and the cooler 5 cannot cool it back completely, which will inevitably affect the concentration of the extract. At this time, the solvent can be added, the first ventilation valve 13 is closed, and the valve 14 is opened to connect the solvent storage. Tank, add the solvent into the reflux tank 8, the solvent will flow into the extraction tank 1 through the second check valve 17, so that the extraction can be completed at a certain concentration as much as possible.

The decompression ultrasonic combined high-efficiency extraction device described in the utility model can not only keep the extraction in a low-temperature boiling state with a certain vacuum degree, but also shorten the extraction time, improve the extraction efficiency, and keep the extraction natural. Active ingredients.

Example analysis 1

The following data are measured through experiments: ^1m3 extraction tank is used in production,

Alcohol extraction,

Feeding amount: 50 kg of natural plant leaves (40-60 mesh after crushing), 200 kg of alcohol (raw material is 95% medicinal alcohol), 200 kg of water;

Initial temperature of cooling water: 5-9 ℃; initial temperature of material: 11-16 ℃;

Cooling water outlet temperature: 18-28°C; tank temperature during extraction: 40-60°C (boiling temperature)

Vacuum degree: - 0.075Mpa;

Cooling water flow: 4m ³ /h;

Electric self-controlled heating mantle heating;

First extraction time: 30 minutes;

Second extraction time: 20 minutes;

Third extraction time: 10 minutes.

In the utility model, the extraction efficiency is greatly improved compared with the decompression used alone, and the extraction time is greatly shortened compared with the decompression extraction device for traditional Chinese medicine extraction provided by the patent application number 200420024138.7.

Claims (5)

1. A decompression ultrasonic combined extraction device, including an extraction tank (1), a condenser (4), a cooler (5), a gas-liquid separation device for keeping the extraction tank (1) in a vacuum state, and the extraction tank (1), the condenser (4), the cooler (5), and the gas-liquid separation device are connected end to end, and a circulation loop is formed through a pipeline. It is characterized in that the extraction tank (1) is equipped with an ultrasonic Generating device (2) and stirring device (3). 2. The decompression ultrasonic combined extraction device according to claim 1, characterized in that: the gas-liquid separation device is composed of a gas-liquid separator (7) and a return tank (8), and the gas-liquid separator ( The top of 7) is provided with a feed pipe to receive the liquid from the cooler (5), and a feed valve (10) is provided on it to control the feed, and the feed pipe extends into the lower half of the gas-liquid separator (7) , the upper part of the gas-liquid separator (7) is connected with the vacuum degree control device to control the vacuum degree of the whole device, the upper part of the gas-liquid separator (7) is connected with the upper part of the return tank (8) through the pipeline, and the pipeline is set There is a first vent valve (13) and a second vent valve (15), and a valve (14) is provided between the first vent valve (13) and the second vent valve (15) to connect to the atmosphere or the solvent storage. tank, a first non-return valve (16) is also provided on the discharge pipeline leading to the reflux tank (8) at the bottom of the gas-liquid separator (7) to control the discharge to the reflux tank (8); The top of the reflux tank (8) is provided with a feed pipe for receiving the liquid from the gas-liquid separator (7). The feed pipe extends into the lower half of the tank body and leads to the extraction tank at the bottom of the reflux tank (8). 1) The discharge pipeline is provided with a second check valve (17) for controlling the discharge to the extraction tank (1). 3. The decompression ultrasonic combined extraction device according to claim 2, characterized in that: the vacuum degree control device includes a pressure regulating valve (11), a vacuum valve (12) and a vacuum pump (6), the vacuum valve (12 ) is used to control the connection of the vacuum pump, the pressure regulating valve (11) is connected to the atmosphere, and the vacuum degree of the whole device is adjusted through the opening. 4. The decompression and ultrasonic combined extraction device according to claim 2, characterized in that: the return tank (8) is also provided with a return tank visual liquid level gauge (18). 5. The decompression ultrasonic combined extraction device according to claim 1, characterized in that: the extraction tank (1) is also provided with an extraction tank visual liquid level gauge (9).

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