Petroleum liquid-liquid extraction device

Abstract

The utility model relates to the technical field of experimental detection, in particular to a petroleum liquid-liquid extraction device. Comprising a reagent flow path, a sample flow path and a detection liquid flow path, the reagent flow path comprises a reagent bottle, an outlet of the reagent bottle is connected with an inlet of a first three-way valve through a first peristaltic pump, and two outlets of the first three-way valve are communicated with a sampling bottle and an extraction bottle respectively; the sample flow path comprises a sampling bottle, and the sampling bottle is communicated with the extraction bottle through a peristaltic pump II; the detection liquid flow path comprises an extraction bottle, the bottom end of the extraction bottle is communicated with the conical flask through a three-way valve II, and one outlet of the three-way valve II is communicated with the exhaust port II. The petroleum liquid-liquid extraction device provides an automatic multi-time sample liquid-liquid extraction scheme, the physical labor intensity of experimenters is relieved, the stability of the experiment process is ensured, and the experiment accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental detection, in particular to an oil-based liquid-liquid extraction device. Background Art

[0002] In the laboratory, the liquid-liquid extraction experiment needs to be carried out manually. In the process of oil-based liquid-liquid extraction, all the water in the sampling bottle is first transferred to the separating funnel, then 10 ml of chloroform / tetrachloroethylene is added to the sampling bottle to rinse the sampling bottle, and the reagent is transferred to the separating funnel for manual violent shaking for 5 minutes. After standing, separating, and collecting the lower organic phase into the Erlenmeyer flask; 10 ml of reagent is added to the separating funnel again, and the processes of shaking, standing, and collecting are repeated; for the third time, 10 ml of reagent is added to the separating funnel, and the processes of shaking, standing, and collecting the test liquid are repeated. The above liquid-liquid extraction method adopts manual liquid-liquid extraction operation, which is cumbersome for personnel operation and has too high physical labor intensity. Content of the Utility Model

[0003] The problems to be solved by the utility model: to provide a device for automatically performing liquid-liquid extraction, which replaces manual labor to reduce the physical labor intensity of experimental personnel and ensure the stability of the experimental process.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an oil-based liquid-liquid extraction device, including a reagent flow path, a sample flow path, and a test liquid flow path. The reagent flow path includes a reagent bottle, the outlet of the reagent bottle is connected to the inlet of a first three-way valve through a first peristaltic pump, and the two outlets of the first three-way valve are respectively connected to the sampling bottle and the extraction bottle; the sample flow path includes a sampling bottle, and the sampling bottle is connected to the extraction bottle through a second peristaltic pump; the test liquid flow path includes an extraction bottle, the bottom end of the extraction bottle is connected to the Erlenmeyer flask through a second three-way valve, and one outlet of the second three-way valve is connected to a second exhaust port.

[0005] Preferably, an exhaust port is provided at the top of the extraction bottle.

[0006] Preferably, a sampling needle is provided at one end of the second peristaltic pump connected to the sampling bottle, and the end of the sampling needle is close to the bottom wall of the sampling bottle.

[0007] Preferably, a liquid injection needle is provided at one end of the first three-way valve connected to the sampling bottle, and the liquid injection needle is connected to the top of the sampling bottle.

[0008] Preferably, both the first three-way valve and the second peristaltic pump are connected to the top of the extraction bottle.

[0009] Preferably, the outlet end of the exhaust port is connected to the bottom end of the beaker, and an organic solution is placed in the beaker.

[0010] Compared with the prior art, the utility model provides a device for automatically performing oil-based liquid-liquid extraction, which has the following beneficial effects: The oil-based liquid-liquid extraction device provides an automatic multi-time liquid-liquid extraction solution for samples, automatically injects a quantitative reagent, and automatically dehydrates the extraction solution, reducing the physical labor intensity of experimental personnel, ensuring the stability of the experimental process, guaranteeing the consistency of the extraction effect, improving the experimental accuracy, and reducing the physical harm of reagents to experimental personnel. Brief Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the device of the utility model;

[0012] Description of the reference numerals: 1, reagent bottle; 2, peristaltic pump one; 3, three-way valve one; 31, injection needle; 4, sampling bottle; 5, peristaltic pump two; 51, sampling needle; 6, extraction bottle; 61, exhaust port one; 7, three-way valve two; 71, exhaust port two; 8, Erlenmeyer flask; 9, beaker. Detailed Embodiments

[0013] The following will describe the technical solutions in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model:

[0014] As Figure 1The following is a schematic structural diagram of the oil liquid-liquid extraction device of the present utility model, which includes a reagent flow path, a sample flow path and a detection liquid flow path. The reagent flow path includes a connected reagent bottle 1, a peristaltic pump 2 and a three-way valve 3. The outlet of the reagent bottle 1 is connected to the inlet of the three-way valve 3 through the peristaltic pump 2. The two outlets of the three-way valve 3 are respectively connected to the sampling bottle 4 and the extraction bottle 6 to form the reagent flow path. The three-way valve 3 transports the reagent in the reagent bottle 1 to the sampling bottle 4 and the extraction bottle 6. A liquid injection needle 31 is provided at the outlet of the three-way valve 3 connected to the sampling bottle 4, and the liquid injection needle 31 is connected to the top of the sampling bottle 4. The three-way valve 3 transports the reagent to the sampling bottle 4 through the liquid injection needle 31. The sample flow path includes the sampling bottle 4 and a three-way valve 7. The sampling bottle 4 is connected to the extraction bottle 6 through a peristaltic pump 5. One end of the peristaltic pump 5 connected to the sampling bottle 4 is provided with a sampling needle 51, and the end of the sampling needle 51 is close to the bottom wall of the sampling bottle 4. The peristaltic pump 5 transports the sample liquid in the sampling bottle 4 to the extraction bottle 6 through the sampling needle 51, and the peristaltic pump 5 is connected to the top of the extraction bottle 6. The detection liquid flow path includes the extraction bottle 6, the three-way valve 7 and an Erlenmeyer flask 8. The bottom end of the extraction bottle 6 is connected to the inlet of the three-way valve 7. One outlet of the three-way valve 7 is connected to the Erlenmeyer flask 8, and the other outlet of the three-way valve 7 is connected to an exhaust port 71. The exhaust port 71 discharges the air in the detection liquid. An exhaust port 61 is provided at the top end of the extraction bottle 6, and the exhaust port 61 discharges the air in the extraction bottle 6. The outlet end of the exhaust port 61 is connected to the bottom end of a beaker 9, and an organic solution is placed in the beaker 9. The air discharged from the exhaust port 61 may contain harmful substances. The discharged gas is filtered through the organic solution to ensure good air in the laboratory and the health of the experimental personnel.

[0015] At the beginning of the experiment, the sampling bottle 4 is already filled with an appropriate amount of sample solution, and the sampling needle 51 has reached the bottom of the sampling bottle 4. The peristaltic pump two 5 is started to transfer all the samples in the sampling bottle 4 to the extraction bottle 6; at this time, there will be a little sample residue in the sampling bottle 4. The three-way valve one 3 is energized, and the peristaltic pump one 2 pumps a quantitative reagent through the three-way valve one 3 and then through the injection needle 31 to reach the sampling bottle. The quantitative reagent cleans the sampling bottle 4 to obtain the residual sample solution, and then this part of the sample solution is transferred to the extraction bottle 6 through the peristaltic pump two 5. After the sampling bottle 4 is thoroughly cleaned, the next operation is carried out; the peristaltic pump one 2 pumps in a quantitative reagent again. This time, it is delivered into the extraction bottle 6 through the outlet of the three-way valve one 3 connected to the extraction bottle 6. The extraction bottle 6 starts to stir at high speed for extraction for 5 minutes. After stirring and extracting for 5 minutes, the extraction bottle 6 stands still for 20 minutes. During this period, the air in the extraction bottle 6 can be discharged from the extraction bottle 6 through the exhaust port one 61 and filtered through the beaker 9 and discharged into the atmosphere. Since the three-way valve two 7 connects the Erlenmeyer flask 8 and the bottom of the extraction bottle 6, the extraction reagent in the lower layer of the extraction bottle 6 flows into the Erlenmeyer flask 8 as the test solution. The peristaltic pump one 2 pumps a quantitative reagent into the extraction bottle 6 for the second time. The extraction bottle 6 stirs at high speed for extraction for 5 minutes again and then stands still for 20 minutes. The extraction reagent in the lower layer of the extraction bottle 6 flows into the Erlenmeyer flask 8 as the test solution; the peristaltic pump one 2 pumps a quantitative reagent into the extraction bottle 6 for the third time. The extraction bottle 6 stirs at high speed for extraction for 5 minutes again and then stands still for 20 minutes. The extraction reagent in the lower layer of the extraction bottle 6 flows into the Erlenmeyer flask 8 as the test solution; the Erlenmeyer flask 8 collects the results of the three extractions as the test solution. Finally, the test solution in the Erlenmeyer flask 8 is tested. The entire extraction process does not require manual vibration of the sample and does not require manual addition of the actual reagent, improving the stability and accuracy of the detection and reducing the labor intensity of the experimental personnel.

Claims

1. An oil-based liquid-liquid extraction device, characterized in that: It includes a reagent flow path, a sample flow path and a detection liquid flow path. The reagent flow path includes a reagent bottle (1). The outlet of the reagent bottle (1) is connected to the inlet of a first three-way valve (3) through a first peristaltic pump (2). The two outlets of the first three-way valve (3) are respectively communicated with a sampling bottle (4) and an extraction bottle (6); the sample flow path includes a sampling bottle (4), and the sampling bottle (4) is communicated with the extraction bottle (6) through a second peristaltic pump (5); the detection liquid flow path includes an extraction bottle (6), and the bottom end of the extraction bottle (6) is communicated with an Erlenmeyer flask (8) through a second three-way valve (7). One outlet of the second three-way valve (7) is communicated with a second exhaust port (71).

2. The oil-based liquid-liquid extraction device according to claim 1, characterized in that: An exhaust port (61) is provided at the top of the extraction bottle (6).

3. The oil-based liquid-liquid extraction device according to claim 2, characterized in that: A sampling needle (51) is provided at one end of the second peristaltic pump (5) connected to the sampling bottle (4), and the end of the sampling needle (51) is close to the bottom wall of the sampling bottle (4).

4. The oil-based liquid-liquid extraction device according to claim 3, characterized in that: A liquid injection needle (31) is provided at one end of the first three-way valve (3) connected to the sampling bottle (4), and the liquid injection needle (31) is communicated with the top of the sampling bottle (4).

5. The oil-based liquid-liquid extraction device according to claim 4, characterized in that: Both the first three-way valve (3) and the second peristaltic pump (5) are communicated with the top of the extraction bottle (6).

6. The oil-based liquid-liquid extraction device according to claim 2, wherein: The outlet end of the exhaust port (61) is communicated with the bottom end of a beaker (9), and an organic solution is placed in the beaker (9).

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