CN215026193U - Negative pressure vaporization normal pressure extraction Soxhlet device - Google Patents

Abstract

The utility model discloses a negative pressure vaporization normal pressure extraction Soxhlet device, which aims to accelerate the circulation speed of a solvent and improve the extraction temperature of the solvent. It includes the solvent jar, draws jar, condenser, collection fluid reservoir, vacuum pump, transfer pump, and the steam outlet of solvent jar links to each other with the import of condenser, and the condenser export connects the liquid inlet of collection fluid reservoir, and the top evacuation mouth of collection fluid reservoir connects the vacuum pump, and the liquid outlet of collection fluid reservoir lower extreme connects the import of transfer pump, and the export of transfer pump is managed the pipeline and is connect the liquid inlet who draws tank deck portion, draws the liquid outlet of tank bottoms portion and manages the inlet that the pipeline connects the solvent tank deck portion. The utility model discloses can realize the evaporation solvent under the negative pressure, heating, stirring, treating the extract product extraction in succession under the ordinary pressure, shortened the time greatly, reduced the energy consumption, improved soxhlet's extraction efficiency, there is extensive usage in a great deal of trades such as food, medicine, cosmetics.

Description

Negative pressure vaporization normal pressure extraction Soxhlet device

Technical Field

The utility model relates to a carry out extraction element, especially a negative pressure vaporization ordinary pressure extraction soxhlet device to solid organic matter with liquid solvent.

Background

In order to extract lipid compounds from milk, Soxhler, German agricultural chemist in 1897 (Franz Rittervon Soxhler), invented a Soxhler extractor which greatly improves the extraction efficiency, has milestone significance in the development history of solvent extraction devices, is uniformly recognized as an optimal method for extracting lipid compounds in samples, and is widely adopted by people since the advent. In recent years, the Soxhlet extractor is used for extracting natural products in samples and is widely applied to various industries such as food, medicines, cosmetics and the like. The structure of the traditional Soxhlet extractor is as follows: the device comprises an evaporation bottle, an extraction cylinder and a condensation pipe, wherein a steam outlet of the evaporation bottle is connected with a condenser, the condenser is connected with the extraction cylinder, and the extraction cylinder is connected with the evaporation bottle through a siphon pipe. During extraction, the powder of the sample to be extracted is loaded into an extraction cylinder, an extractant is added into an evaporation bottle, the liquid in the evaporation bottle is heated to boil and vaporize, the vapor enters a condenser, the vapor is condensed and liquefied by the condenser and flows into the extraction cylinder, the sample is extracted, when the liquid level of the extraction is consistent with the height of a siphon, siphoning occurs, and the extraction liquid flows back to the evaporation bottle through the siphon. Heating, vaporizing, rising, condensing and siphoning are continuously carried out, and the process is circulated repeatedly until the extraction is complete. The traditional Soxhlet extractor has the following disadvantages in practical application: firstly, steam is condensed and liquefied by a condenser and then directly enters an extraction cylinder, the extraction temperature is low, and the extraction speed and the solubility of an extractant on an extract to be extracted are low; the extractant only extracts the extract to be extracted in a dipping mode, so that no shearing force is generated, and the extraction efficiency is poor; the circulation time is long, after one-time siphon is finished, the liquid in the extraction cylinder is completely emptied, and long time is needed when the extract is soaked again; intermittent boiling occurs in the extraction process, and when siphonage occurs, a large amount of extract liquid flows into the evaporation bottle from the extraction cylinder once to ensure that the temperature of the liquid in the evaporation bottle is reduced below the boiling point of the solvent; the evaporation rate of the solvent is slow.

Based on the slow cycle speed of the traditional Soxhlet extraction, the Chinese patents CN104621707A and CN201821278848.0 adopt reduced pressure Soxhlet extraction, the cycle speed of an extracting agent is improved to a certain extent, but a condensate directly enters an extraction cylinder, and the extraction temperature is low and the extraction effect is not ideal because the boiling point of a solvent under negative pressure is lower than that under normal pressure.

Disclosure of Invention

For overcoming the tradition and exist not enough of soxhlet extractor, the utility model provides a negative pressure vaporization ordinary pressure extraction soxhlet device not only can be at the vaporization solvent under the negative pressure, and solvent circulation is fast, can improve the temperature of solvent extraction moreover and carry out continuous extraction to the sample under ordinary pressure, stirring.

The utility model provides a technical scheme that its technical problem adopted is:

1. the utility model provides a negative pressure vaporization ordinary pressure extraction soxhlet device, includes the solvent jar, draws jar, condenser, collection fluid reservoir, vacuum pump, transfer pump, and the steam outlet of solvent jar links to each other with the import of condenser, and the condenser export meets the liquid import of collection fluid reservoir, and the top evacuation mouth of collection fluid reservoir meets the vacuum pump, and the liquid outlet of collection fluid reservoir lower extreme meets the import of transfer pump, and the export of transfer pump is managed the pipeline and is connect the liquid import that draws jar top, draws the liquid outlet of tank bottoms portion and manages the inlet that the pipeline connects the solvent jar top.

2. A negative pressure vaporization atmospheric extraction Soxhlet apparatus as described in item 1 above, wherein the top of the extraction tank is fitted with a vent condenser to reduce solvent evaporation and provide atmospheric extraction.

3. The vacuum vaporization normal pressure extraction Soxhlet device as described in the above item 1, wherein the liquid pipeline between the infusion pump and the extraction tank is that the outlet of the infusion pump is connected with the inlet of the ball valve, the outlet of the ball valve is connected with the inlet of the one-way valve, the outlet of the one-way valve is connected with the inlet of the liquid flow meter, the outlet of the liquid flow meter is connected with the liquid inlet of the extraction tank, the infusion pump can draw out the liquid under the negative pressure state, the one-way valve prevents suck-back, and the ball valve and the liquid flow meter can control the liquid flow.

4. The vacuum vaporization atmospheric pressure extraction Soxhlet device as described in the item 1, wherein the liquid pipeline between the liquid outlet at the bottom of the extraction tank and the solvent tank is provided with a ball valve and a flow meter, and the liquid flow can be controlled.

5. The Soxhlet apparatus for negative pressure vaporization and normal pressure extraction as described in item 1 above, wherein the solvent tank is provided with a heating interlayer and a stirring device, so that the solvent can extract the sample at a certain temperature and under a high shear force.

6. The vacuum evaporation atmospheric pressure extraction Soxhlet device as described in item 1 above, wherein the vacuum evaporation atmospheric pressure extraction Soxhlet device comprises a vacuum evaporation chamber, a vacuum evaporation chamber, a vacuum

The infusion pump is preferably a canned pump.

The utility model has the advantages that: firstly, under negative pressure, the solvent is easy to vaporize, and the circulation speed is accelerated; secondly, extracting under normal pressure, and setting a higher extraction temperature compared with negative pressure extraction; thirdly, the high shearing force generated by stirring enables the solvent to improve the extraction speed and degree of the sample; the heating device of the extraction tank can keep the extraction temperature stable or raise the extraction temperature; replacing the traditional intermittent extraction mode with a continuous extraction mode, and always keeping the solvent at a lower concentration to extract the sample; the method has wide application range, and can be used for extracting samples by using a high-boiling-point solvent and also can be used for Soxhlet extraction of some heat-sensitive substances.

Drawings

FIG. 1 is a schematic diagram of a Soxhlet apparatus for negative pressure vaporization and normal pressure extraction.

In the figure 1, 1 is a solvent tank, 2 is an extraction tank, 3 is a condenser, 4 is a liquid collecting tank, 5 is a vacuum pump, 6 is a shielding pump, 7 is a one-way valve, 8 is a ball valve A, 9 is a liquid flowmeter A, 10 is a ball valve B, 11 is a liquid flowmeter B, 101 is a steam outlet of the solvent tank, 102 is a liquid inlet of the solvent tank, 103 is a product outflow valve, 104 is a thermometer, 105 is a vacuum gauge, 106 is a solvent tank interlayer, 201 is a vented condenser, 202 is a stirrer, 203 is an extraction tank interlayer, 204 is a liquid inlet of the extraction tank, 205 is a liquid outlet, 401 is a liquid inlet of the liquid collecting tank, 402 is a vacuum pumping port, and 403 is a liquid pumping outlet.

Detailed Description

In fig. 1, a solvent tank (1), an extraction tank (2), a condenser (3), a liquid collection tank (4), a vacuum pump (5) and a canned motor pump (6), a steam outlet (101) of the solvent tank (1) is connected with an inlet of the condenser (3), an outlet of the condenser (3) is connected with a liquid inlet (401) of the liquid collection tank (4), a top evacuation port (402) of the liquid collection tank (4) is connected with the vacuum pump (5), a liquid evacuation port (403) at the lower end of the liquid collection tank (4) is connected with an inlet of the canned motor pump (6), an outlet of the canned motor pump (6) is connected with a liquid inlet (204) at the top of the extraction tank (2) through a pipeline, and a liquid outlet (205) at the bottom of the extraction tank (2) is connected with a liquid inlet (102) at the top of the solvent tank (1) through a pipeline.

The utility model discloses the extraction jar (2) top of device is equipped with emptying condenser (201) to reduce solvent volatilization and provide the ordinary pressure environment, extraction jar (2) have intermediate layer (203), agitator (202), can make the solvent extract the sample under certain temperature and high shear force.

The utility model discloses canned motor pump (6) of device and draw the liquid pipeline between jar (2) and link to each other with ball valve A (8) import for the export of canned motor pump (6), the export of ball valve A (8) links to each other with the import of check valve (7), the export of check valve (7) connects the import of fluidflowmeter A (9), the export of fluidflowmeter A (9) links to each other with liquid inlet (204) of drawing jar (2), the liquid under the very negative pressure state of canned motor pump (6), check valve (7) prevent the suck-back, the size of the steerable liquid flow of ball valve A (8) and fluidflowmeter A (9).

The utility model discloses solvent tank (1) of device has intermediate layer (106), and usable hot steam or conduction oil heating solvent.

The utility model discloses used canned motor pump (6) of device has higher leakproofness, can make the negative pressure of collection fluid reservoir (4) stable.

The utility model discloses the device draw between jar (2) and collection liquid jar (4) liquid pipeline be equipped with globe valve A (8) and liquid flowmeter A (9), draw between jar (2) and solvent tank (1) liquid pipeline be equipped with globe valve B (10) and liquid flowmeter B (11), through adjusting valve A (8), the size of B (10) switching value, control liquid flowmeter A (9) and liquid flowmeter B (11) liquid velocity of flow are unanimous, can keep drawing the liquid level invariant in jar (2), carry out continuous extraction.

The utility model discloses combine fig. 1 to the process of extracting caffeine from tealeaves does further explain: introducing cooling water into the condenser (3) and the emptying condenser (201), adding a certain amount of 95% ethanol into the solvent tank (1), adding a certain amount of tea powder and a certain amount of 95% ethanol into the extraction tank (2), starting the vacuum pump (5), and controlling to a certain vacuum degree; heating the solvent tank (1) and the extraction tank (2), and starting a stirrer (202) of the extraction tank (2); the ethanol liquid in the solvent tank (1) is vaporized and enters a condenser (3), and the condensed and liquefied liquid enters a liquid collecting tank (4); when the liquid level in the liquid collection tank (4) reaches a certain height, the spherical valve A (8), the one-way valve (7) and the shield pump (6) are opened, the flow rate of the liquid flowmeter A (9) is observed, the flow rate is adjusted, and the liquid level in the liquid collection tank (4) is controlled to keep a certain height; opening the ball valve B (10), controlling the flow rate of the liquid flowmeter B (11) to be the same as that of the liquid flowmeter A (9), keeping the continuous and constant extraction of the tea powder by the ethanol until the extraction degree meets the requirement, stopping the extraction, and transferring the liquid in the solvent tank (1) to obtain the extraction liquid.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and modifications for some technical features without creative labor, and these replacements and modifications are all within the protection scope of the present invention.

Claims (4)

1. The utility model provides a negative pressure vaporization ordinary pressure extraction soxhlet device, includes the solvent jar, draws jar, condenser, collection fluid reservoir, vacuum pump, transfer pump, its characterized in that, the steam outlet of solvent jar links to each other with the import of condenser, and the export of condenser meets the liquid inlet of collection fluid reservoir, and the top evacuation mouth of collection fluid reservoir meets the vacuum pump, and the liquid outlet of collection fluid reservoir lower extreme meets the import of transfer pump, and the export of transfer pump is managed the pipeline and is connect the liquid inlet who draws tank top portion, and the liquid outlet of drawing tank bottom portion is managed the pipeline and is met the inlet at solvent tank top portion.

2. The apparatus of claim 1, wherein the top of the extraction tank is equipped with a vent condenser.

3. The apparatus as claimed in claim 1, wherein the liquid line between the liquid delivery pump and the extraction tank is a liquid line between the liquid delivery pump and the extraction tank, the outlet of the liquid delivery pump is connected to the inlet of a ball valve, the outlet of the ball valve is connected to the inlet of a check valve, the outlet of the check valve is connected to the inlet of a liquid flow meter, and the outlet of the liquid flow meter is connected to the liquid inlet of the extraction tank.

4. The apparatus of claim 1, wherein the liquid delivery pump is a canned pump.

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