CN110681179A

CN110681179A - Soxhlet extractor

Info

Publication number: CN110681179A
Application number: CN201810740808.1A
Authority: CN
Inventors: 郑浩楠; 余立汜; 任佳璇; 钟汝力
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-08
Filing date: 2018-07-08
Publication date: 2020-01-14

Abstract

The invention relates to a Soxhlet extractor which adopts the following technical scheme: the utility model provides a soxhlet's extractor mainly includes vacuum pump, condenser pipe, draws bottle, flourishing appearance sleeve, drain pipe, siphon, evaporates host computer, evaporating flask, control panel, support, water bath, lumber skid soon, its characterized in that: the top of the support is provided with a control panel, one side of the support is provided with a condenser pipe, the upper end of the condenser pipe is communicated with a vacuum pump, the lower part of the condenser pipe is connected with an extraction bottle through a liquid outlet pipe, a sample containing sleeve is arranged inside the extraction bottle, the bottom of the extraction bottle is provided with a siphon pipe, the tail end of the siphon pipe extends into the lower part of the condenser pipe, the condenser pipe is connected with an evaporation bottle through a rotary evaporation host, and the evaporation bottle and the extraction bottle are arranged in a water bath kettle. The structure of separating the evaporation, condensation and leaching devices is adopted, so that the heat consumption of steam is reduced, and the evaporation rate of the solvent is improved; the method of decompression, rotary evaporation and water bath heating of the extracting bottle is adopted to accelerate the evaporation of the solvent and the leaching of the extract and improve the extraction efficiency.

Description

Soxhlet extractor

Technical Field

The invention relates to the field of chemical experimental instruments, in particular to a Soxhlet extractor.

Background

The Soxhlet extractor is a solid-liquid extraction instrument commonly used in laboratories, and solid substances are extracted by pure hot solvent every time by utilizing the reflux and siphon principles of the solvent, so that the dosage of the solvent is reduced. Chinese patent with application number CN201520423281.1 discloses a soxhlet extractor, which is characterized in that: the siphon hose with adjustable height is adopted, so that the loss rate of the Soxhlet extractor is reduced, the residue of the extracting solution is reduced, and the extraction time is shortened, but the extract is damaged when the boiling point of the solvent is higher due to the poor thermal stability of some active substances; in the device, the temperature of the Soxhlet extractor is far lower than that of the evaporation bottle, so that the leaching of substances is not facilitated; in the device, the connecting pipe is exposed in the air, so that the heat loss is serious when the solvent steam rises, and the solvent evaporation efficiency is reduced; for some fat or fine particles, the sample is liable to escape from the gap of the filled filter paper, causing the siphon to clog.

Disclosure of Invention

The present invention aims to provide a soxhlet extractor for solving the above-mentioned drawbacks.

Further, in order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a soxhlet's extractor mainly includes vacuum pump, condenser pipe, draws bottle, flourishing appearance sleeve, drain pipe, siphon, evaporates host computer, evaporating flask, control panel, support, water bath, lumber skid soon, its characterized in that: the support top is equipped with control panel, and support one side is equipped with the condenser pipe, and the condenser pipe upper end communicates with the vacuum pump, and the lower part passes through the drain pipe and links to each other with extracting the bottle, extracts the bottle inside and is equipped with flourishing appearance sleeve, and it is equipped with the siphon to extract the bottle bottom, and the condenser pipe end stretches into the condenser pipe lower part, and the condenser pipe links to each other with the evaporating flask through evaporating the host computer soon, and the evaporating flask is arranged in the water bath with extracting the bottle.

Furthermore, evaporate the host computer soon and be connected with the evaporating flask, evaporate the host computer soon and rotate and drive the evaporating flask rotatory, improve solvent and evaporate efficiency.

Furthermore, the extraction bottle is separated from the evaporation bottle and is connected with the condensing tube through a liquid outlet tube and a siphon tube.

Furthermore, the interior of the extraction bottle is provided with a sample containing sleeve which can be composed of a glass filter medium or a sintered sand core, so that a siphon pipe is prevented from being blocked by a sample.

Furthermore, the evaporation bottle and the extraction bottle can be respectively arranged in different water bath pots.

Furthermore, the condenser pipe is a spherical condenser pipe or a snake-shaped condenser pipe.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the evaporation bottle and the rotary evaporation main machine are installed in an inclined manner (as shown in the preferred embodiment 2).

An auxiliary technical means derived from the necessary technical means is that the sample containing sleeve barrel body is composed of other filter media or is directly placed in the extraction bottle by using material containing filter paper.

An auxiliary technical means derived from the necessary technical means is that the sample containing sleeve is replaced by a filter plate with filtering property.

An accessory technical means derived from the necessary technical means is that the siphon is replaced by a rubber hose or a replaceable conduit.

An auxiliary technical means derived from the necessary technical means is that a cooling and heating jacket is additionally arranged outside the extraction bottle.

An auxiliary technical means derived from the necessary technical means is that an ultrasonic device for promoting the leaching of substances is additionally arranged outside the extraction bottle.

An auxiliary technical means derived from the necessary technical means is that the evaporation bottle does not adopt a rotary evaporation mode, and the siphon is directly communicated with the evaporation bottle.

An auxiliary technical means derived from the necessary technical means is that the evaporation bottle is a three-neck flask.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the skid can be replaced by other height adjusting devices such as a lifting platform.

In conclusion, the invention has the advantages that: the structure of separating the evaporation device, the condensation device and the leaching device is adopted, so that the temperature reduction loss caused by heat dissipation when steam rises is reduced, and the condensation efficiency is improved; by adopting a method of decompression and rotary evaporation, the evaporation of the solvent is accelerated, the extraction time is shortened, the extraction efficiency of the substances is improved, the boiling point of the solvent is reduced, and the substances with poor thermal stability are protected; a sample containing sleeve with a filtering function is adopted to prevent the siphon pipe from being blocked by a sample; the water bath kettle is adopted to heat the extracting bottle in a water bath manner, so that the leaching temperature is increased, and the leaching efficiency is accelerated.

Drawings

FIG. 1 is a schematic diagram of a Soxhlet extractor of a preferred embodiment 1.

FIG. 2 is a schematic diagram of a Soxhlet extractor of the preferred embodiment 2.

Detailed Description

Preferred example 1: referring to fig. 1, the soxhlet extractor comprises a water outlet 1, a condensation pipe 2, a water inlet 3, a liquid outlet pipe 4, a siphon pipe 5, a rotary steaming main machine 6, an evaporation bottle 7, a water bath 8a, a water bath 8b, a control panel 9, a fixing clamp 10, a support 11, a sample containing sleeve 12, an extraction bottle 13, a skid 14 and a vacuum pump 15.

The use method comprises the following steps: before extraction, a sample is ground or crushed and then is loaded into a sample containing sleeve 12, the sample containing sleeve 12 is placed into an extraction bottle 13, the extraction bottle is tightly covered and sealed, an evaporation bottle 7 filled with a proper amount of solvent is connected with a rotary evaporation host machine 6, a vacuum pump 15 is started, air in a condensation tube 2 and the evaporation bottle 7 is pumped out, the evaporation bottle 7 is in a negative pressure state, the temperature of a water bath pot 8a and the temperature of a water bath pot 8b and the rotating speed of the rotary evaporation host machine 6 are respectively adjusted, the solvent is heated to be evaporated, solvent steam rises to the condensation tube 2, after condensation, the solvent flows into the extraction bottle 13 along the tube wall of the condensation tube 2 and a liquid outlet tube 4 and permeates into the sample containing sleeve 12 to be extracted, meanwhile, the extraction bottle 13 is continuously heated to maintain the temperature, when the liquid level in the extraction bottle 13 exceeds the highest position of a siphon 5, the solvent in the extraction bottle 13 flows back into the evaporation bottle 7, solute flows into the evaporation bottle 7 along with the solvent, and is, after the operation is finished, the operation of the rotary steaming main machine 6 is stopped, and the vacuum pump 15, the water bath 8a and the water bath 8b are closed.

Furthermore, the top of the sample holding sleeve 12 and the extraction bottle 13 can be screwed by a screw device, so that good tightness is kept.

Furthermore, the temperature of the water bath 8a is set to be slightly higher than the boiling point of the solvent contained in the water bath, so that the steaming process is smooth, and the temperature of the water bath 8b is set to be suitable for extracting the substance and preventing the solvent from being excessively volatilized from the extraction bottle 13, so that the substance is fully leached.

Preferred example 2: in this embodiment, the lower end of the condensation pipe 2 is connected with the extraction bottle 13, the evaporation bottle 7 and the rotary evaporation main machine 6 are installed in an inclined manner, other components and connections are the same as those of the preferred embodiment 1, and the operation of extracting substances by using the device of the preferred embodiment is basically the same as that of the preferred embodiment 1.

It is understood that the above is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art will understand that many modifications, variations or equivalents may be made within the spirit and scope of the present invention as defined in the claims, but they will fall within the scope of the present invention.

Claims

1. The utility model provides a soxhlet's extractor mainly includes vacuum pump, condenser pipe, draws bottle, flourishing appearance sleeve, drain pipe, siphon, evaporates host computer, evaporating flask, control panel, support, water bath, lumber skid soon, its characterized in that: the support top is equipped with control panel, and support one side is equipped with the condenser pipe, and the condenser pipe upper end communicates with the vacuum pump, and the lower part passes through the drain pipe and links to each other with extracting the bottle, extracts the bottle inside and is equipped with flourishing appearance sleeve, and it is equipped with the siphon to extract the bottle bottom, and the condenser pipe end stretches into the condenser pipe lower part, and the condenser pipe links to each other with the evaporating flask through evaporating the host computer soon, and the evaporating flask is arranged in the water bath with extracting the bottle.

2. The soxhlet extractor of claim 1, wherein: the rotary steaming main machine is connected with the evaporation bottle, and the rotary steaming main machine rotates to drive the evaporation bottle to rotate.

3. The soxhlet extractor of claim 1, wherein: the extraction bottle is separated from the evaporation bottle and is connected with the condensation pipe through a liquid outlet pipe and a siphon pipe.

4. The soxhlet extractor of claim 1, wherein: the extraction bottle is internally provided with a sample containing sleeve which can be composed of a glass filter medium or a sintered sand core.

5. The soxhlet extractor of claim 1, wherein: the evaporation bottle and the extraction bottle can be respectively arranged in different water baths.

6. The soxhlet extractor of claim 1, wherein: the condenser pipe is a spherical condenser pipe or a snakelike condenser pipe.