Replaceable membrane separation filter head for liquid-liquid extraction

Abstract

The utility model relates to the technical field of chemical separation, in particular to a replaceable membrane separation filter head for liquid-liquid extraction, which comprises a filter head upper half part, a liquid-liquid extraction separation membrane and a filter head lower half part which are sequentially arranged from top to bottom, a liquid inlet is formed in the filter head upper half part, a liquid outlet is formed in the filter head lower half part, and a bulge is arranged on the filter head lower half part. The upper half part of the filter head is connected with the bulge through a thread structure, the interior of the upper half part of the filter head is of a hemispherical structure and is provided with a through hole I, the through hole I is connected with the liquid inlet, and the upper half part and the lower half part of the filter head are cooperatively designed with the liquid-liquid extraction separation membrane, so that mixed liquid can be sufficiently and uniformly filtered when flowing through the filter membrane; therefore, the extraction efficiency and the separation precision are improved, the filter head can adapt to mixture separation tasks with different complexities through selection of multiple layers of membranes and filter membranes in various shapes, and the extraction efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical separation technology, specifically a replaceable membrane separation filter head for liquid-liquid extraction. Background Technology

[0002] Liquid-liquid extraction, also widely known as solvent extraction or extraction, is a key method in chemical experiments used to separate and extract specific components from liquid mixtures. This technique is based on the difference in solubility of the target component in a selected solvent. By adding a solvent that is immiscible (or only slightly miscible) with the target component to the liquid mixture, the effective separation or extraction of the target component is achieved. As a commonly used pretreatment operation in laboratories at all levels, liquid-liquid extraction plays a vital role in many fields such as chemical analysis, drug synthesis, and environmental monitoring.

[0003] However, traditional liquid-liquid extraction methods have many shortcomings. They are cumbersome, time-consuming, labor-intensive, and have relatively low extraction efficiency. More importantly, the natural stratification process of the extracted mixture is slow, and the phase interface is difficult to accurately determine. This often relies on the operator's experience and subjective judgment, which easily introduces human error, thus affecting the accuracy and reliability of the experimental results.

[0004] In recent years, although laboratory liquid-liquid extraction devices have made some progress in automation, such as achieving automatic sample introduction, automatic cleaning, and automatic waste discharge, a fundamental breakthrough has not yet been achieved in the core step of separating the extracted mixture. Most existing devices have only made automation improvements to the operating procedures, but have failed to effectively solve the fundamental problems such as large human error, long time consumption, and cumbersome procedures. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a replaceable membrane separation filter head for liquid-liquid extraction.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: A replaceable membrane separation filter head for liquid-liquid extraction, comprising, from top to bottom, an upper half of a filter head, a liquid-liquid extraction separation membrane, and a lower half of a filter head. The upper half of the filter head has a liquid inlet, and the lower half of the filter head has a liquid outlet. A protrusion is provided on the lower half of the filter head, and the upper half of the filter head is connected to the protrusion via a threaded structure. The upper half of the filter head has a hemispherical structure with a through hole one connected to the liquid inlet. The lower half of the filter head has a hemispherical structure with a through hole two connected to the liquid outlet. The lower edge of the upper half of the filter head presses against the upper edge of the liquid-liquid extraction separation membrane, and the upper edge of the lower half of the filter head supports the lower edge of the liquid-liquid extraction separation membrane.

[0009] Preferably, the liquid inlet is either circular or square.

[0010] More preferably, the liquid outlet is either circular or square.

[0011] Preferably, the liquid-liquid extraction separation membrane is circular, square, polygonal, triangular, or one of the following polygonal shapes.

[0012] Preferably, the liquid-liquid extraction separation membrane is provided with sealing rings at its upper and lower edges.

[0013] More preferably, the upper half and lower half of the filter head are made of one of plastic, metal, glass, and ceramic.

[0014] Preferably, the liquid-liquid extraction separation membrane is either a single-layer membrane or a multi-layer membrane.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a replaceable membrane separation filter head for liquid-liquid extraction, which has the following beneficial effects:

[0017] Improve extraction efficiency:

[0018] The coordinated design of the upper and lower halves of the filter head with the liquid-liquid extraction separation membrane ensures that the mixture is fully and uniformly filtered when flowing through the filter membrane, thereby improving extraction efficiency and separation accuracy.

[0019] The selection of multilayer membranes and various filter membrane shapes allows the filter head to adapt to the separation of mixtures with varying degrees of complexity, further improving extraction efficiency.

[0020] Enhance flexibility and applicability:

[0021] The circular or square design of the inlet and outlet, as well as the variety of shapes of the liquid-liquid extraction separation membrane, allow the filter head to easily adapt to various container interfaces and experimental requirements, enhancing its flexibility and wide applicability.

[0022] The selection of filter heads made of different materials (plastic, metal, glass, ceramic) allows them to be used in different chemical environments and experimental conditions, meeting diverse application needs.

[0023] Ensure sealing and reliability:

[0024] The sealing ring design at the upper and lower edges of the liquid-liquid extraction separation membrane, along with the tight connection between the upper and lower halves of the filter head via a threaded structure, together ensure the airtightness of the entire device and effectively prevent leakage.

[0025] The use of sealing rings also enhances the firmness of filter membrane installation, ensuring stability and reliability during the separation process.

[0026] Easy to maintain and replace:

[0027] The detachable design of the filter head makes filter membrane replacement simple and quick, reducing maintenance costs and time.

[0028] The ease of cleaning has also been improved, allowing users to easily disassemble the filter head for internal cleaning, ensuring the long-term stable operation of the equipment.

[0029] Improving experimental accuracy and repeatability:

[0030] The efficient separation effect and stable filter membrane installation make the experimental results more accurate and reliable, and improve the repeatability and credibility of the experiment.

[0031] The precise design and material selection of the filter head reduced interference factors during the experiment and ensured the accuracy of the experimental data.

[0032] Promote environmental protection and resource conservation:

[0033] By improving extraction efficiency and separation precision, the amount of extractant used and the amount of waste generated are reduced, which is beneficial to environmental protection and resource conservation. Attached Figure Description

[0034] Figure 1 This is a schematic diagram showing the disassembled parts of this utility model;

[0035] Figure 2 This is a schematic diagram of the assembly structure of this utility model;

[0036] Figure 3 This is a schematic cross-sectional view of the present invention.

[0037] In the diagram: 1. Upper half of the filter head; 2. Lower half of the filter head; 3. Liquid-liquid extraction separation membrane; 4. Inlet; 5. Outlet; 6. Through hole one; 7. Through hole two; 8. Protrusion. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figure 1-3 This utility model discloses a replaceable membrane separation filter head for liquid-liquid extraction, comprising an upper part 1 of the filter head, a liquid-liquid extraction separation membrane 3, and a lower part 2 of the filter head arranged sequentially from top to bottom. The upper part 1 of the filter head is provided with a liquid inlet 4, and the lower part 2 of the filter head is provided with a liquid outlet 5. The lower part 2 of the filter head is provided with a protrusion 8, and the upper part 1 of the filter head is connected to the protrusion 8 by a threaded structure. The upper part 1 of the filter head has a hemispherical structure with a through hole 6, which is connected to the liquid inlet 4. The lower part 2 of the filter head has a hemispherical structure with a through hole 7, which is connected to the liquid outlet 5. The lower edge of the upper part 1 of the filter head presses against the upper edge of the liquid-liquid extraction separation membrane 3, and the upper edge of the lower part 2 of the filter head supports the lower edge of the liquid-liquid extraction separation membrane 3.

[0040] This replaceable membrane filter head for liquid-liquid extraction achieves efficient and reliable two-phase liquid separation through the coordinated operation of a precisely designed upper part 1 of the filter head, the liquid-liquid extraction membrane 3, and the lower part 2. The specific working principle is as follows:

[0041] Infusion and drainage:

[0042] The container containing the extracted mixture is connected to the inlet 4 of the upper half 1 of the separator filter head.

[0043] The mixture enters the separator filter head through the inlet 4 and then enters the hemispherical structure of the upper half 1 of the filter head through the through hole 6.

[0044] Separation membrane filtration:

[0045] The mixture flows within the hemispherical structure of the upper half 1 of the filter head and is filtered through the liquid-liquid extraction separation membrane 3 pressed against the lower edge of the hemispherical structure.

[0046] The liquid-liquid extraction separation membrane 3 separates the mixture into two phases: one phase of liquid will flow out completely through the liquid-liquid extraction separation membrane 3, while the other phase of liquid will remain in the container.

[0047] Flow diversion and liquid discharge:

[0048] The liquid filtered through the liquid-liquid extraction separation membrane 3 enters the hemispherical structure of the lower half of the filter head 2 through the second through hole 7.

[0049] The filtered liquid is discharged through outlet 5, completing the two-phase separation process.

[0050] Sealing and fixing:

[0051] The upper and lower edges of the liquid-liquid extraction separation membrane 3 are equipped with sealing rings to ensure that the upper and lower hemispherical structures inside the filter head are in close contact with the liquid-liquid extraction separation membrane 3, while ensuring the sealing of the entire device and preventing leakage.

[0052] The upper half 1 and the lower half of the filter head are connected by a threaded structure. The lower edge of the upper half 1 of the filter head presses against the upper edge of the liquid-liquid extraction separation membrane 3, and the upper edge of the lower half 2 of the filter head supports the lower edge of the liquid-liquid extraction separation membrane 3, ensuring that the liquid-liquid extraction separation membrane 3 is firmly installed and maintains good sealing performance.

[0053] Preferred technical solutions and their working principles

[0054] Inlet 4 shape:

[0055] Round or square: The inlet 4 can be designed in either a round or square shape to accommodate different types of container interfaces and experimental requirements. The round inlet 4 is suitable for most standard containers, while the square inlet 4 provides a wider inlet area, suitable for specific application scenarios.

[0056] Liquid outlet 5 shape:

[0057] Round or square: The outlet 5 can also be designed in either a round or square shape to accommodate different receiving containers and drainage requirements. The round outlet 5 facilitates connection to standard pipelines, while the square outlet 5 provides a larger drainage cross-section, suitable for high-flow applications.

[0058] Liquid-liquid extraction separation membrane shape 3:

[0059] Circular, square, polygonal, triangular, or polygonal shapes: The shape of the liquid-liquid extraction separation membrane 3 can be selected according to the specific application scenario. Circular membranes are suitable for most routine separation tasks, while other shapes (such as square, polygonal, etc.) can provide better separation results under special geometric conditions.

[0060] Number of layers in a liquid-liquid extraction separation membrane:

[0061] Single-layer or multi-layer membrane: The liquid-liquid extraction separation membrane 3 can be a single-layer or multi-layer membrane. Single-layer membranes are suitable for simple separation tasks, while multi-layer membranes offer higher separation efficiency and selectivity, suitable for the fine separation of complex mixtures.

[0062] Sealing ring design:

[0063] Liquid-liquid extraction separation membrane 3 edge sealing: The upper and lower edges of the liquid-liquid extraction separation membrane 3 are equipped with sealing rings to ensure that the upper and lower hemispherical structures inside the filter head are in close contact with the liquid-liquid extraction separation membrane 3, while ensuring the sealing of the entire device and preventing leakage.

[0064] Material selection:

[0065] Plastic, metal, glass, or ceramic: The upper and lower parts of the filter head can be made of plastic, metal, glass, or ceramic. Plastic is lightweight and inexpensive, suitable for single use; metal is durable and corrosion-resistant, suitable for high-intensity applications; glass is transparent, allowing easy observation of the internal components; ceramic has good chemical stability, suitable for strong acid and alkali environments.

[0066] The separation filter head of this invention can be used as a disposable separation filter head.

[0067] Detailed Workflow

[0068] Preparation:

[0069] Connect the container containing the extracted mixture to the inlet 4 of the upper half 1 of the separator filter head, ensuring a tight connection.

[0070] Check that all components are working properly and confirm that the power supply and control system are started (if applicable).

[0071] Liquid inlet procedure:

[0072] The mixture enters the separator filter head through the inlet 4 and then enters the hemispherical structure of the upper half 1 of the filter head through the through hole 6.

[0073] The mixture within the hemispherical structure is filtered through a liquid-liquid extraction separation membrane 3 pressed against its lower edge.

[0074] Separation operation:

[0075] When the mixture passes through the liquid-liquid extraction separation membrane 3, it is separated into two phases: one phase of liquid will flow out completely through the liquid-liquid extraction separation membrane 3, while the other phase of liquid will remain in the container.

[0076] The upper and lower edges of the liquid-liquid extraction separation membrane 3 are equipped with sealing rings to ensure the sealing and reliability during the separation process.

[0077] Flow diversion and liquid discharge:

[0078] The liquid filtered through the liquid-liquid extraction separation membrane 3 enters the hemispherical structure of the lower half of the filter head 2 through the second through hole 7.

[0079] The filtered liquid is discharged through outlet 5, completing the two-phase separation process.

[0080] Cleaning and maintenance:

[0081] After completing all separation operations, close the inlet 4, disassemble the liquid-liquid extraction separation membrane 3, clean the inside of the filter head, ensure the equipment is clean and ready for the next use.

[0082] Regularly check the sealing of each component to ensure there are no leaks, and replace the sealing rings if necessary.

[0083] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable membrane separation filter head for liquid-liquid extraction, characterized in that, The filter head comprises, from top to bottom, an upper half (1), a liquid-liquid extraction separation membrane (3), and a lower half (2). The upper half (1) has an inlet (4), and the lower half (2) has an outlet (5). The lower half (2) has a protrusion (8). The upper half (1) is connected to the protrusion (8) by a threaded structure. The upper half (1) has a hemispherical structure with a through hole (6) connected to the inlet (4). The lower half (2) has a hemispherical structure with a through hole (7) connected to the outlet (5). The lower edge of the upper half (1) presses against the upper edge of the liquid-liquid extraction separation membrane (3), and the upper edge of the lower half (2) supports the lower edge of the liquid-liquid extraction separation membrane (3).

2. The replaceable membrane separation filter head for liquid-liquid extraction according to claim 1, characterized in that, The liquid inlet (4) can be either circular or square.

3. The replaceable membrane separation filter head for liquid-liquid extraction according to claim 2, characterized in that, The liquid outlet (5) can be either circular or square.

4. The replaceable membrane separation filter head for liquid-liquid extraction according to claim 3, characterized in that, The liquid-liquid extraction separation membrane (3) is in the shape of a circle, square, polygon, triangle, or one of the following polygons.

5. A replaceable membrane separation filter head for liquid-liquid extraction according to claim 4, characterized in that, The liquid-liquid extraction separation membrane (3) is provided with sealing rings at its upper and lower edges.

6. A replaceable membrane separation filter head for liquid-liquid extraction according to claim 5, characterized in that, The upper half (1) and lower half (2) of the filter head are made of one of the following materials: plastic, metal, glass and ceramic.

7. A replaceable membrane separation filter head for liquid-liquid extraction according to claim 6, characterized in that, The liquid-liquid extraction separation membrane (3) can be either a single-layer membrane or a multilayer membrane.

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