Anionic surfactant extraction device

Abstract

The invention discloses an anionic surfactant extraction device which comprises a platform base, a first separating funnel and a second separating funnel are clamped on the platform base from top to bottom through vibration chucks, and vibration motors in driving connection with the corresponding vibration chucks are arranged in the platform base; a pipette is inserted into the first separating funnel on the lower portion of the funnel plug through a vent hole, a lifting rod with a movable fan blade set at the end is arranged in the pipette, and the fan blade set is unfolded when the fan blade set is pushed downwards to move out of a lower end opening of the pipette. The fan blade group retracts into the lower port of the transfer pipette and relatively blocks the lower port of the transfer pipette when the fan blade group moves upwards under upward pulling force, a new experiment platform is designed, operation such as transfer in the traditional technology is reduced, the influence of human factors of experimenters on experiments is reduced, and the experiment efficiency is improved. The physical power consumption of an experiment on personnel is greatly reduced, the standardization is better, the consistency of the experiment is ensured, and the efficiency is improved through batch experiments.

Description

Technical Field

[0001] The invention relates to the technical field of extraction device structures, in particular to an anion surfactant extraction device. Background Art

[0002] Extraction is a common pretreatment method in laboratories and is widely used in the pretreatment process of analytical experiments. However, the manual operation is cumbersome, involves many steps, takes a long time, and consumes a lot of physical effort. Common experiments include volatile phenols, anionic surfactants, etc.

[0003] Some problems existing in the existing extraction test process:

[0004] 1. Extraction requires shaking, oscillating, degassing and other steps. Each step requires the use of corresponding instruments, or requires transfer and clamping operations between instruments (for example, the shaking operation requires transferring the container to the shaking device and then transferring it back after the shaking is completed). It is time-consuming and laborious, and multiple transfers will affect the effect of the previous operation step;

[0005] 2. Moreover, each experimenter has different techniques and understanding of the standards, so the intensity and time of shaking are different, which will cause deviations in the final test data;

[0006] 3. The reagents and consumables used include methanol, carbon tetrachloride, chloroform and other organic reagents, which are harmful to the human body. In traditional experiments, the steps and operations are complicated, and gas masks must be worn for long experiments. Therefore, it is hoped that the steps will be simplified and the operation time will be shortened as much as possible; Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide an improved anionic surfactant extraction device in order to overcome the deficiencies in the prior art.

[0008] The technical solution adopted by the present invention is: an anionic surfactant extraction device, comprising a platform seat, on which a first separating funnel and a second separating funnel are respectively connected through vibration chucks from top to bottom, and vibration motors are respectively driven and connected to corresponding vibration chucks in the platform seat;

[0009] By adopting the above technical solution, the upper and lower areas can realize oscillation respectively, and the amplitude and speed of oscillation can be set to adjust different oscillation requirements by setting the range and frequency of the left and right movement of the platform. A motor device is provided in the base, which is similar to a horizontal oscillator.

[0010] The output end of the lower end of the first separating funnel is connected to the input end of the upper end of the second separating funnel through a hose, and the output end of the lower end of the second separating funnel is provided with glass wool to introduce the liquid into the volumetric flask below;

[0011] The upper end of the first separating funnel is provided with a funnel plug with an air release hole, a pipette is inserted into the first separating funnel downward through the air release hole on the funnel plug, and a lifting rod with a movable fan group at the end is provided in the pipette, the fan group is unfolded when it is moved out of the lower port of the pipette by the downward thrust, and the fan group is retracted into the lower port of the pipette when it is moved upward by the upward pulling force to achieve relative blocking of the lower port of the pipette;

[0012] By adopting the above technical solution, the unfolded fan blades can achieve the effect of stirring and mixing the solution under the rotation of the lifting rod, and the fan blades can achieve the effect of relatively blocking the lower port of the pipette after retraction.

[0013] The pipette body is also provided with a spray hole;

[0014] By adopting the above technical solution, after the fan blade achieves relative blocking of the lower port of the pipette, for example: when 10ml of liquid needs to be injected, the hollow pipe from the bottom to the upper spray hole in the pipette can be pre-designed to have a capacity of 5ml. At this time, 5ml of solution can be added first, and the base can basically overflow due to the relative blocking. Then, when another 5ml of solution is added, it will be rinsed from the spray hole to the surrounding container walls under the action of pressure, so that the attached liquid on the container wall can be flushed downward to reduce losses. (The spray holes can be set in multiple places and directions as needed).

[0015] The first separating funnel and the lower output end of the second separating funnel are both provided with a siphon device, and the siphon device is a flow valve;

[0016] By adopting the above technical solution, controlling the strength of siphoning and designing a multi-way valve, after the pipeline is completely filled with the required liquid, the valve is rotated and the liquid is sucked into the extraction device. Through the matching plug, extraction can be carried out in batches or by selecting to use multiple devices.

[0017] Furthermore, the movable fan blade group described in the present invention includes stirring fan blades respectively arranged on the left and right sides of the lower end of the lifting rod and rotatable by a rotating shaft. A pre-tightening spring is also arranged between the lower side of the stirring fan blade and the lifting rod to facilitate the extension and retraction of the fan blade.

[0018] Furthermore, the flow valve described in the present invention is a multi-way valve structure design.

[0019] Furthermore, a weight sensing device is also provided below the volumetric flask of the present invention;

[0020] By adopting the above technical solution, when necessary, the software program control can be combined as needed to achieve automatic volume setting to the required volume, m=pv. According to the formula, the volume of the fixed volume is known, the density of the solution is known, and the quality to be achieved is obtained. When the quality requirement is met, the operation is automatically stopped.

[0021] Furthermore, the platform base of the present invention is also provided with a panel including an LED display screen, operation buttons and light buttons, so as to facilitate operation and remind the experimenter of the current experimental step;

[0022] Furthermore, a circular hole for holding the first or second separating funnel is provided in the center of the vibration chuck of the present invention, and the diameter of the circular hole is smaller than the maximum diameter of the first and second separating funnels, so as to facilitate the placement and manual rotation of the separating funnel.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The present invention designs a new experimental platform, which can place two funnels up and down at the same time, and cooperates with zoned controllable vibration, which reduces the transfer operations in traditional technologies, reduces the impact of human factors on the experiment by the experimenter, greatly reduces the physical consumption of the experimenter, and has better standardization, ensuring the consistency of the experiment, and improving the efficiency of batch experiments;

[0025] 2. The pipette with retractable and sealing fan blades is cleverly designed and easy to operate. The sealing and stirring functions can be switched arbitrarily and quickly.

[0026] 3. Through the coordination of the hollow cavity in the pipette with a reasonable volume and the spray hole, the expected metered liquid can be added and the container wall can be rinsed at the same time, and the liquid attached to the container wall can be washed down at the same time, reducing losses and further improving the test accuracy;

[0027] 4. The upper and lower structural design of the entire platform meets the purpose of seamless connection of the experimental process and reduces the transfer process;

[0028] 5. Through the instrument settings, you can choose to operate in a single step or perform a combined operation. Similarly, each project can be freely combined through programming to facilitate experimenters to perform the most optimized method verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is an enlarged view of the structure at A in the present invention;

[0031] Figure 3 It is an enlarged view of the structure at B in the present invention;

[0032] Figure 4 It is an enlarged view of the structure at C in the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the spray hole on the pipette in the present invention.

[0034] Numbers in the figure: 1. Platform base, 2. Vibrating chuck, 3. First separating funnel, 4. Second separating funnel, 5. Hose, 6. Glass wool, 7. Volumetric flask, 8. Vent hole, 9. Funnel plug, 10. Pipette, 11. Lifting rod, 12. Flow valve, 13. Rotating shaft, 14. Stirring fan, 15. Preload spring, 16. Spray hole, 17. Weight sensing device, 18. Panel. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below. The embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0036] like Figure 1 to Figure 5 The embodiment of the anionic surfactant extraction device of the present invention shown in the figure comprises a platform base 1, on which a first separating funnel 3 and a second separating funnel 4 are respectively connected through a vibrating chuck 2 from top to bottom, and a vibrating motor is provided in the platform base 1 to drive and connect the corresponding vibrating chuck 2;

[0037] The output end of the lower end of the first separating funnel 3 is connected to the input end of the upper end of the second separating funnel 4 through a hose 5, and the output end of the lower end of the second separating funnel 4 is provided with glass wool 6 to introduce the liquid into the volumetric flask 7 below;

[0038] A funnel plug 9 with an air release hole 8 is provided at the upper end of the first separating funnel 3. A pipette 10 is inserted into the first separating funnel 3 downward through the air release hole 8 on the funnel plug 9. A lifting rod 11 with a movable fan group at the end is provided in the pipette 10. The fan group is expanded when it is pushed downward and moves out of the lower end of the pipette 10. When the fan group is pulled upward and moves upward, it retracts into the lower end of the pipette 10 and relatively blocks the lower end of the pipette 10. A spray hole 16 is also provided on the pipette body of the pipette 10.

[0039] Siphon devices are provided at the lower output ends of the first separating funnel 3 and the second separating funnel 4 , and the siphon devices are flow valves 12 .

[0040] The movable blade group includes stirring blades 14 respectively arranged on the left and right sides of the lower end of the lifting rod 11 and rotating through the rotating shaft 13, and a preload spring 15 is also arranged between the lower side of the stirring blade 14 and the lifting rod 11. The flow valve 12 is a multi-way valve structure design.

[0041] A weight sensing device 17 is also provided below the volumetric flask 7. The platform seat 1 is also provided with a panel 18 comprising an LED display screen, operating buttons and a light button.

[0042] A circular hole for holding the first separating funnel 3 or the second separating funnel 4 is provided in the center of the vibration chuck 2 , and the diameter of the circular hole is smaller than the maximum diameter of the first separating funnel 3 and the second separating funnel 4 .

[0043] Experimental operation process:

[0044] (Experimental basis: GB / T 7494-1987)

[0045] 1. Transfer the sample to the first separatory funnel, use phenolphthalein as an indicator, add 1 mol / L sodium hydroxide solution dropwise until the aqueous solution turns pink, then add 0.5 mol / L sulfuric acid until the pink color just disappears;

[0046] 2. Add 25 ml of methylene blue solution, shake well, then transfer 10 ml of chloroform, shake vigorously for 30 seconds, and pay attention to degassing;

[0047] 3. Excessive shaking will cause emulsification. Adding a small amount of isopropanol (less than 10 ml) can eliminate the emulsification phenomenon. Then slowly rotate the separatory funnel to make the chloroform droplets retained on the inner wall fall down and let it stand to separate into layers.

[0048] 4. Put the chloroform layer into the second separatory funnel which is pre-filled with 50ml washing liquid, rinse the drain pipe of the first separatory funnel with a few drops of chloroform, repeat the extraction three times, use 10ml chloroform each time, combine all the chloroform into the second separatory funnel, shake vigorously for 30s, and let it stand to separate the layers. (The two funnels are connected by a hose, and the piston device releases liquid by rotation, siphoning, and shaking)

[0049] 5. Pass the chloroform layer through glass wool or absorbent cotton and place it in a 50ml volumetric flask.

[0050] 6. Extract the washing liquid twice with chloroform (5 ml each time), add the chloroform layer into the volumetric flask, and add chloroform to the mark. (Gravity volume)

[0051] In the above experimental process, the vibration frequency and amplitude were adjusted through the steps of the experimental method to achieve the optimal extraction conditions. The speed and volume of liquid dripping were controlled by adjusting the amplitude of the valve rotation angle, and the time required for 50 ml of liquid to drip was determined to achieve basic separation of the liquid phase and the extraction phase.

[0052] In addition, you can add a photosensitive device to measure the transmittance of the container as needed to determine whether it is necessary to add solution for demulsification. The time for mixing the solution can be controlled by setting the motor time. After each step is optimized, the order of each process is combined to perform one-key extraction. The button of each link will flash after it is turned on to indicate the link of the current experiment. After the next link is turned on, the indicator light of the previous step will be always on.

Claims

1. An anionic surfactant extraction device, characterized in that: The platform seat (1) comprises a first separating funnel (3) and a second separating funnel (4) which are respectively connected to the platform seat (1) from top to bottom via a vibrating chuck (2); and a vibrating motor which is respectively driven and connected to the corresponding vibrating chuck (2) is arranged inside the platform seat (1); The output end of the lower end of the first separating funnel (3) is connected to the input end of the upper end of the second separating funnel (4) via a hose (5), and the output end of the lower end of the second separating funnel (4) is provided with glass wool (6) to introduce the liquid into the volumetric flask (7) below; The upper end of the first separating funnel (3) is provided with a funnel plug (9) with an air release hole (8), a pipette (10) is inserted into the first separating funnel (3) downward through the air release hole (8) on the funnel plug (9), and a lifting rod (11) with a movable fan group at the end is provided in the pipette (10), the fan group is unfolded when it is moved out of the lower end of the pipette (10) by a downward thrust, and the fan group is retracted into the lower end of the pipette (10) when it is moved upward by an upward pulling force, and the lower end of the pipette (10) is relatively blocked; The pipette (10) is also provided with a spray hole (16); Siphon devices are provided at the lower output ends of the first separating funnel (3) and the second separating funnel (4), and the siphon devices are flow valves (12).

2. An anionic surfactant extraction device as claimed in claim 1, characterized in that: The movable blade group includes stirring blades (14) which are respectively arranged on the left and right sides of the lower end of the lifting rod (11) and are rotated by a rotating shaft (13). A preload spring (15) is also arranged between the lower side of the stirring blade (14) and the lifting rod (11).

3. The anionic surfactant extraction device according to claim 1, characterized in that: The flow valve (12) is designed as a multi-way valve structure.

4. The anionic surfactant extraction device according to claim 1, characterized in that: The flow valve (12) controls the flow by setting a rotating piston.

5. The anionic surfactant extraction device according to claim 1, characterized in that: A weight sensing device (17) is also provided below the volumetric flask (7).

6. The anionic surfactant extraction device according to claim 1, characterized in that: The platform seat (1) is also provided with a panel (18) including an LED display screen, operation buttons and lighting buttons.

7. The anionic surfactant extraction device according to claim 1, characterized in that: The vibrating chuck (2) is provided with a circular hole in the center thereof for holding the first separating funnel (3) or the second separating funnel (4), and the diameter of the circular hole is smaller than the maximum diameter of the first separating funnel (3) and the second separating funnel (4).

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