CN212941566U

CN212941566U - Soxhlet extractor for vacuum recovery of extraction liquid

Info

Publication number: CN212941566U
Application number: CN202021323336.9U
Authority: CN
Inventors: 仝宇; 宋代磊; 王�琦; 徐梦
Original assignee: Jinan Yuxing Chemical Co Ltd
Current assignee: Jinan Yuxing Chemical Co Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-04-13
Anticipated expiration: 2030-07-08

Abstract

The utility model discloses a soxhlet extractor of extract is retrieved in vacuum, including top-down consecutive condenser, extractor, draw the bottle, be equipped with siphon and steam connecting pipe on the extractor, set up control piston 1 on the steam connecting pipe, draw bottle one side and be provided with the temperature sensor interface, the opposite side passes through negative pressure interface and vacuum pump system connection, and negative pressure interface front end is provided with control piston 2. The utility model discloses carry out the design improvement to the soxhlet extractor, design negative pressure suction device on extracting the bottle, set up the piston simultaneously on steam connecting pipe, the normal extraction operation of being convenient for and the switching of negative pressure suction operation. Meanwhile, the function of negative pressure suction is added, so that the extraction liquid can completely flow back, the loss of the solvent and the extraction substance is reduced, the device is quickly started and stopped, and the operation efficiency and the yield are improved.

Description

Soxhlet extractor for vacuum recovery of extraction liquid

Technical Field

The invention relates to the field of chemical experimental equipment, in particular to a Soxhlet extractor for vacuum recovery of extract liquor.

Background

A problem often encountered in laboratory research and chemical production activities is the separation and purification of substances. The extraction of compounds from solid materials, if carried out by long-term leaching, is carried out in low yields and with a long time, so that the soxhlet extractor is one of the laboratory equipment commonly used for extraction operations. The Soxhlet extractor comprises an extraction bottle, an extractor and a condenser from bottom to top, wherein a steam connecting pipe and a solvent siphon are installed on the extractor, when extraction is carried out, a sample is packaged in a degreasing filter paper package and is placed in the extractor, a solvent (mostly a volatile solvent with a lower boiling point) is placed in the extraction bottle, the extraction bottle is heated, solvent steam enters the condenser through the steam connecting pipe, the solvent steam is dripped into the extractor after being condensed into liquid again, extract in a sample is dissolved out, when the liquid level in the extractor reaches a certain height, the solvent containing the extract can flow back into the extraction bottle through the siphon, the circulation is carried out, the extract in the extraction bottle is gradually enriched, and target substances in the sample can be extracted thoroughly after a period of time.

Although the Soxhlet extractor has much higher efficiency and yield than the traditional extraction method, the Soxhlet extractor still has the defects that the solvent in the extractor refluxes into the extraction bottle by siphoning, if the heating temperature is not high, the circulation speed of the solvent is slow, and the reflux is incomplete, especially for extracting substances with lower decomposition temperature. The extraction operation can not open fast and stop, and the detachable device in complete rear of cooling extraction liquid natural reflux of the system must be waited for to carry out sampling operation, is difficult to realize continuous sampling. If the sample is loose and porous, a considerable amount of solvent is still adsorbed in the sample at the end of the extraction operation, and the substance extracted by the solvent cannot flow back into the extraction flask.

Disclosure of Invention

In order to solve the problem, the utility model discloses carry out the design improvement to the soxhlet extractor, design the vacuum aspiration device on extracting the bottle, set up the piston simultaneously on steam connecting pipe, the switching of normal extraction operation and vacuum aspiration operation of being convenient for, these improvements make the extract can flow back completely, have realized opening fast of device and have stopped, are convenient for carry out the operation of application of sample and sample, reduce the solvent loss, improve operating efficiency and yield.

The utility model discloses a realize through following technical scheme:

the Soxhlet extractor comprises a condenser, an extractor and an extraction bottle which are sequentially connected from top to bottom, wherein a siphon and a steam connecting pipe are arranged on the extractor, a first control piston is arranged on the steam connecting pipe, a temperature sensor interface is arranged on one side of the extraction bottle, the other side of the extraction bottle is connected with a vacuum pump system through a negative pressure interface, and a second control piston is arranged at the front end of the negative pressure interface.

Preferably, the extraction flask is a flat-bottomed flask; the condenser is a spherical condenser.

Preferably, the temperature sensor interface is connected to a temperature sensor.

Preferably, the material of the first control piston and the second control piston is polytetrafluoroethylene.

Preferably, the bore diameter of the first control piston is the same as the inner diameter of the steam connection pipe.

The beneficial effects of the utility model

The utility model discloses a soxhlet extractor of extract is retrieved in vacuum through setting up piston and negative pressure suction device, both can realize normal extraction function, can also realize the abundant recovery of extract and the getting rid of remaining solvent through the negative pressure suction.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a drawing of a patented device of the present invention;

FIG. 2 is a schematic diagram of the operation of the apparatus for recovering the extract under vacuum.

In the figure, 1, a condenser, 2, an extractor, 3, an extraction bottle, 4, a siphon, 5, a steam connecting pipe, 6, a control piston I, 7, a temperature sensor interface, 8, a negative pressure interface, 9, a negative pressure pump, 10, a control piston II, 11 and a temperature sensor are arranged.

Detailed Description

For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 is a drawing of the patent device of the utility model.

The utility model provides a soxhlet extractor of extract is retrieved in vacuum, includes that top-down links to each other in proper order condenser 1, extractor 2, draws bottle 3, is equipped with siphon 4 and steam connecting pipe 5 on the extractor 2, sets up control piston one on the steam connecting pipe 5, draws bottle 3 one side and is provided with temperature sensor interface 7, and the opposite side passes through negative pressure interface 8 and is connected with vacuum pump system 9, and the 8 front ends of negative pressure interface are provided with control piston two.

Preferably, the extraction flask 3 is a flat-bottomed flask. Preferably, the condenser 1 is a spherical condenser. A temperature sensor 11 is connected to the temperature sensor interface 7.

In the material selection, the control piston adopts the polytetrafluoroethylene material to prevent to corrode the gas leakage, and the aperture of piston is the same with steam connecting pipe internal diameter simultaneously, reduces the steam circulation resistance.

FIG. 2 is a schematic diagram of the vacuum extraction liquid recovery operation of the apparatus.

When the device is used for extracting substances, the first control piston is opened, and the second control piston is closed, so that the solvent can circulate in the device, and a normal extraction function is realized.

When the concentration of the extract in the extraction bottle reaches the experimental requirement or sampling is carried out and extraction operation needs to be stopped halfway, heating is stopped, liquid in the extraction bottle stops boiling, the negative pressure interface is connected to a vacuum pump system as shown in fig. 2, the control piston I is closed, the control piston II is slowly opened at the same time, negative pressure is adjusted, extraction liquid in the extraction bottle is sucked into the extraction bottle, and extraction liquid treatment or sampling operation can be carried out when the liquid in the device completely flows back into the extraction bottle.

The above detailed description of the embodiments of the present invention is only used as an example, and the present invention is not limited to the above described embodiments, and the modifications of the present invention are also within the scope of the present invention.

Claims

1. The utility model provides a soxhlet extractor of extract is retrieved in vacuum, includes top-down consecutive condenser (1), extractor (2), extracts bottle (3), its characterized in that is equipped with siphon (4) and steam connecting pipe (5) on extractor (2), sets up control piston (6) on steam connecting pipe (5), extracts bottle (3) one side and is provided with temperature sensor interface (7), and the opposite side passes through negative pressure interface (8) and is connected with vacuum pump system (9), and negative pressure interface (8) front end is provided with control piston two (10).

2. The soxhlet extractor for vacuum extraction of claim 1, wherein the extraction flask (3) is a flat-bottomed flask.

3. Soxhlet extractor for the vacuum recovery of extraction liquid according to claim 1, characterized in that the condenser (1) is a spherical condenser.

4. The Soxhlet extractor for extracting solution with vacuum as claimed in claim 1, characterized in that the temperature sensor interface (7) is connected with a temperature sensor (11).

5. The Soxhlet extractor for extracting solution with vacuum as claimed in claim 1, wherein the material of the control piston I (6) and the control piston II (10) is polytetrafluoroethylene.

6. The soxhlet extractor for extracting solution under vacuum as claimed in claim 1, wherein the bore diameter of the first control piston (6) is the same as the inner diameter of the steam connecting pipe (5).