Multi-connected automatic liquid-liquid extraction device

Abstract

The invention provides a multi-connected automatic liquid-liquid extraction device, and relates to the field of extraction devices. The multi-connected automatic liquid-liquid extraction device comprises a plurality of separating funnels, an exhaust port, a gas circuit and a pressure adjusting pipe are arranged in the upper side wall of each separating funnel, and a pressure atomizing nozzle is mounted at the lower end of each pressure adjusting pipe; two-way valves are fixedly connected to the middle parts of the pressure adjusting pipes and the gas paths; the ends, away from the separating funnel, of the multiple pressure adjusting pipes are fixedly connected with the same liquid inlet pipe, a peristaltic pump is arranged on the outer side wall of the liquid inlet pipe, and two liquid inlets are formed in the ends, away from the pressure adjusting pipes, of the liquid inlet pipe. Through the combination of the pressure atomizing nozzle and the air pump, the extraction liquid is sprayed in the form of fine liquid drops, the contact area of a liquid phase and a sample is remarkably increased, meanwhile, air is introduced into the air pump to promote stirring and mixing, the extraction process is accelerated, and the extraction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of extraction devices, in particular to a multi-connected automatic liquid-liquid extraction device. Background Art

[0002] Liquid-liquid extraction is a common separation technology, widely used in the fields of chemistry, pharmaceuticals, environmental analysis, etc. Traditional liquid-liquid extraction devices are usually manually operated, with low efficiency and difficult to achieve precise control. In addition, when processing multiple samples, existing devices usually need to be operated one by one, which is not only time-consuming and labor-intensive, but also prone to human errors. At the same time, during the extraction process of traditional devices, the mixing effect of liquid and sample is poor, resulting in low extraction efficiency and long extraction time. In addition, the cleaning process is cumbersome and prone to residual impurities, which affects the accuracy of subsequent experiments. Therefore, it is of great practical significance to develop a liquid-liquid extraction device that can achieve automation, efficient multi-operation and cleaning. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention provides a multi-connected automatic liquid-liquid extraction device, which solves the problem that in the extraction process of traditional devices, the mixing effect of liquid and sample is poor, resulting in low extraction efficiency and long extraction time.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-connected automatic liquid-liquid extraction device, including a separatory funnel, wherein a plurality of separatory funnels are provided, an exhaust port, an air path and a pressure regulating pipe are provided inside the upper side wall of each separatory funnel, a pressure atomizing nozzle is installed at the lower end of each pressure regulating pipe, and a two-way valve is fixedly connected to the middle of each pressure regulating pipe and the air path;

[0007] The ends of the multiple pressure regulating tubes away from the separating funnel are fixedly connected to the same liquid inlet tube, the outer wall of the liquid inlet tube is provided with a peristaltic pump, and the end of the liquid inlet tube away from the pressure regulating tube is provided with two liquid inlets.

[0008] Preferably, an air pump is installed at one end of the plurality of air paths away from the separating funnel, and the output end of the air pump is connected to the inside of the air path. The air pump can introduce air into the extraction liquid through the air path, thereby promoting stirring and mixing of the extraction sample and the extraction liquid.

[0009] Preferably, a three-way valve is installed in the middle of the liquid inlet pipe, and a water pump is installed at the upper end of the three-way valve, and the water pump can pump external liquid into the pressure regulating pipe.

[0010] Preferably, the liquid inlet end of the water pump extends into the cleaning agent, and the water pump can pump the cleaning agent into the pressure regulating tube.

[0011] Preferably, the two liquid inlets of the liquid inlet pipe extend into the extraction liquid and the extraction sample respectively, and are used to absorb the extraction liquid and the extraction sample respectively. A control valve is provided in the middle of each of the liquid inlets, and the control valve is used to control the connectivity of the liquid inlets.

[0012] Preferably, the roller inside the peristaltic pump cooperates with the outer wall of the liquid inlet tube. When the motor in the peristaltic pump drives the pump head to rotate, the roller squeezes the liquid inlet tube in sequence. Each time the roller squeezes the liquid inlet tube, the fluid in the pipe is pushed forward. With the continuous movement of the roller, the fluid is gradually pushed to the outlet end. In the area where the roller is not squeezed, the pipe returns to its original state, forming a negative pressure and sucking in new fluid.

[0013] (III) Beneficial effects

[0014] The present invention provides a multi-connected automatic liquid-liquid extraction device. It has the following beneficial effects:

[0015] 1. The present invention realizes the automated operation of the extraction process through the coordinated work of the peristaltic pump, the air pump and the valve, reduces manual intervention, and improves work efficiency and operation accuracy.

[0016] 2. Through the combination of peristaltic pump and air pump, the setting of peristaltic pump can perform quantitative sampling of extraction liquid and extraction sample, which improves the extraction accuracy of the device. At the same time, the air pump introduces air to promote stirring and mixing, which significantly increases the contact area between liquid phase and sample, accelerates the extraction process, and improves the extraction efficiency.

[0017] 3. The device is equipped with a cleaning system and a pressure atomizing nozzle. The water pump can pump the cleaning agent into the pipeline. After the cleaning liquid is sprayed out through the pressure atomizing nozzle, the cleaning agent is atomized into fine droplets during the high-speed spraying process to form a spraying effect, which significantly increases the contact area between the cleaning agent and the separatory funnel, effectively removes residual liquid and impurities, ensures the cleanliness of the device, extends its service life, and avoids cross contamination of samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Among them, 1. air pump; 2. two-way valve; 3. pressure atomizing nozzle; 4. air circuit; 5. separating funnel; 6. exhaust port; 7. water pump; 8. three-way valve; 9. peristaltic pump. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example:

[0022] like Figure 1 As shown, an embodiment of the present invention provides a multi-connected automatic liquid-liquid extraction device, including a separatory funnel 5, wherein three separatory funnels 5 are provided, and an exhaust port 6, an air circuit 4 and a pressure regulating tube are provided inside the upper side wall of each separatory funnel 5, wherein the exhaust port 6 can discharge excess gas in the separatory funnel 5, and a pressure atomizing nozzle 3 is installed at the lower end of each pressure regulating tube, and a two-way valve 2 is fixedly connected to the middle of each pressure regulating tube and the air circuit 4.

[0023] An air pump 1 is installed at one end of the multiple air paths 4 away from the separating funnel 5. The output end of the air pump 1 is connected to the inside of the air path 4. The air pump 1 can introduce air into the extraction liquid through the air path 4, thereby promoting the stirring and mixing of the extraction sample and the extraction liquid.

[0024] The ends of the multiple pressure regulating tubes away from the separating funnel 5 are fixedly connected to the same liquid inlet tube, and a peristaltic pump 9 is provided on the outer wall of the liquid inlet tube. The end of the liquid inlet tube away from the pressure regulating tube is provided with two liquid inlets, and the two liquid inlets of the liquid inlet tube respectively extend into the extraction liquid and the extraction sample, and are used to absorb the extraction liquid and the extraction sample respectively. A control valve is provided in the middle of each liquid inlet, and the control valve is used to control the connectivity of the liquid inlet.

[0025] A three-way valve 8 is installed in the middle of the liquid inlet pipe, and a water pump 7 is installed on the upper end of the three-way valve 8. The water pump 7 can pump external liquid into the pressure regulating pipe. The liquid inlet end of the water pump 7 extends into the cleaning agent, and the water pump 7 can pump the cleaning agent into the pressure regulating pipe.

[0026] The roller inside the peristaltic pump 9 cooperates with the outer wall of the liquid inlet tube. When the motor in the peristaltic pump 9 drives the pump head to rotate, the roller squeezes the liquid inlet tube in turn. Each time the roller squeezes the liquid inlet tube, the fluid in the pipe is pushed forward. With the continuous movement of the roller, the fluid is gradually pushed to the outlet end. In the area where the roller is not squeezed, the pipe returns to its original state, forming a negative pressure and sucking in new fluid.

[0027] The electrical components appearing in this article are all electrically connected to an external main controller, and the main controller may be a conventional known device for control such as a computer, and the electrical components appearing in this article are all electrically connected to an external power source.

[0028] Working principle: First, the peristaltic pump 9 works to extract the extraction sample through the liquid inlet through the liquid inlet pipe. At this time, the pressure in the liquid inlet is relatively small, the speed of the liquid passing through the nozzle is relatively slow, the surface tension and viscosity are dominant, and the liquid flows out in the form of drops. After that, the two control valves are adjusted to allow the peristaltic pump 9 to extract the extraction liquid, and the extraction liquid enters the separatory funnel through the liquid inlet pipe. During this period, the air pump 1 can introduce air into the extraction liquid through the air path 4, thereby promoting the stirring and mixing of the extraction sample and the extraction liquid, so that the extraction liquid and the sample are fully mixed, and the extraction efficiency is further improved. rate, then the peristaltic pump 9 and the air pump 1 stop working, so that the extraction liquid and the sample stand for a period of time and then separate into layers, and the extraction work is completed. When it is necessary to clean the pipeline and the separating funnel 5, the water pump 7 passes the detergent into the separating funnel 5 through the pipeline. The detergent is equivalent to the extraction liquid or the extracted sample to obtain a higher speed, and the surface tension and viscosity are relatively weakened. The detergent is atomized into fine droplets during the high-speed spraying process to form a spraying effect, which significantly increases the contact area between the liquid phase and the sample, and usually increases the surface area by several times or even thousands of times, thereby improving the cleaning effect.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-connected automatic liquid-liquid extraction device, comprising a separatory funnel (5), characterized in that: A plurality of separating funnels (5) are provided, and an exhaust port (6), an air path (4) and a pressure regulating tube are provided inside the upper side wall of each separating funnel (5); a pressure atomizing nozzle (3) is installed at the lower end of each pressure regulating tube, and a two-way valve (2) is fixedly connected to the middle of each pressure regulating tube and the air path (4); The ends of the plurality of pressure regulating tubes away from the separating funnel (5) are fixedly connected to the same liquid inlet tube, the outer wall of the liquid inlet tube is provided with a peristaltic pump (9), and the end of the liquid inlet tube away from the pressure regulating tube is provided with two liquid inlets.

2. The multi-connected automatic liquid-liquid extraction device according to claim 1, characterized in that: An air pump (1) is installed at one end of the plurality of air paths (4) away from the separating funnel (5), and the output end of the air pump (1) is connected to the inside of the air path (4).

3. The multi-connected automatic liquid-liquid extraction device according to claim 1, characterized in that: A three-way valve (8) is installed in the middle of the liquid inlet pipe, and a water pump (7) is installed at the upper end of the three-way valve (8).

4. The multi-connected automatic liquid-liquid extraction device according to claim 3, characterized in that: The liquid inlet end of the water pump (7) extends into the cleaning agent.

5. The multi-connected automatic liquid-liquid extraction device according to claim 1, characterized in that: The two liquid inlets of the liquid inlet pipe extend into the extraction liquid and the extraction sample respectively, and a control valve is arranged in the middle of each of the liquid inlets.

6. The multi-connected automatic liquid-liquid extraction device according to claim 1, characterized in that: The roller inside the peristaltic pump (9) cooperates with the outer side wall of the pressure regulating tube.

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