Durable high-turbidity water purification membrane assembly

Abstract

The utility model belongs to the technical field of water purification treatment, and discloses a durable high-turbidity water purification membrane component which comprises a shell, an upper cover body, a lower cover body and a hollow fiber membrane core group, the upper cover body and the lower cover body are detachably and fixedly mounted at two ends of the shell respectively, and the hollow fiber membrane core group is assembled in the shell; the hollow fiber membrane core group comprises an upper end block, a lower end block and a hollow fiber membrane filament group, the upper end block and the lower end block are respectively arranged at the two ends of the hollow fiber membrane filament group and are matched with the shell, and the outer side of the upper end block is sleeved with a limiting ring fixedly connected with the upper end block. According to the scheme, the unique connecting structure enables the membrane core group to be conveniently taken out of the membrane assembly and replaced, when the membrane core group breaks down or is polluted, the membrane assembly does not need to be integrally replaced, the use cost is reduced, the hollow fiber membrane filament group is made of a filament-breaking-free reinforced membrane, the durability is high, the operation is simple, the maintenance amount is small, and the effluent quality is better guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and more specifically, to a durable high-turbidity water purification membrane assembly. Background Technology

[0002] In today's increasingly water-scarce world, the purification of highly turbid water has become particularly important. Highly turbid water typically contains large amounts of suspended particles, organic matter, microorganisms, and other impurities, and traditional water treatment methods often fall short of meeting the requirements for efficient and deep purification. Membrane separation technology, as an advanced water treatment technology, has been widely applied in the field of highly turbid water purification due to its advantages such as high efficiency, energy saving, and environmental friendliness.

[0003] Existing high-turbidity water purification membrane modules typically use a fixed connection between the membrane core and the housing. However, the membrane core is prone to loosening, deformation, or even damage under the impact of high-turbidity water. When the membrane core malfunctions or becomes severely polluted, the entire membrane module often needs to be replaced, which not only increases operating costs but also wastes resources.

[0004] Therefore, it is necessary to develop a high-turbidity water purification membrane module with a stable structure, a removable and replaceable membrane core, a reusable membrane shell, and high durability to solve the problems existing in the current technology. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a durable high-turbidity water purification membrane assembly.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A durable high-turbidity water purification membrane module includes a housing, an upper cover, a lower cover, and a hollow fiber membrane core assembly. The upper cover and the lower cover are detachably and fixedly installed at both ends of the housing, and the hollow fiber membrane core assembly is assembled inside the housing.

[0008] The hollow fiber membrane core assembly includes an upper end block, a lower end block, and a hollow fiber membrane filament assembly. The upper end block and the lower end block are respectively disposed at both ends of the hollow fiber membrane filament assembly. The upper end block and the lower end block are adapted to the housing. A limiting ring is sleeved on the outer side of the upper end block and fixedly connected thereto. A plurality of limiting blocks evenly distributed in a ring shape are fixedly connected to the bottom of the limiting ring. The limiting blocks are fixedly connected to the surface of the upper end block. A limiting groove is opened on the top of the housing corresponding to the limiting blocks. When the hollow fiber membrane core assembly is assembled on the housing, the limiting blocks are inserted into the limiting grooves.

[0009] The upper end block has a first external thread on its surface above the limiting ring, and the upper cover has a first internal thread inside. The upper end block and the upper cover are threadedly connected by the first external thread and the first internal thread.

[0010] As a further description of the above technical solution: the upper cover and the lower cover are respectively threaded to the shell, the upper cover and the lower cover are provided with a second internal thread, and the outer surfaces of both ends of the shell are provided with a second external thread.

[0011] As a further description of the above technical solution: the membrane fiber material of the hollow fiber membrane assembly is made of materials such as polyethersulfone, polyvinylidene fluoride, polypropylene or polytetrafluoroethylene.

[0012] As a further description of the above technical solution: the contact surface between the housing and the limiting ring, and the contact surface between the limiting groove and the limiting block are provided with sealing rubber gaskets.

[0013] As a further description of the above technical solution: a protective coating is provided on the outer surface of the housing.

[0014] As a further description of the above technical solution: the surface of the hollow fiber membrane filament assembly is coated with a hydrophilic nano-coating, wherein the hydrophilic nano-coating is titanium dioxide or aluminum oxide.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] First, the unique connection structure of this solution allows the membrane core assembly to be easily removed from the membrane module and replaced. When the membrane core assembly malfunctions or becomes contaminated, there is no need to replace the entire membrane module, thus reducing the cost of use.

[0017] Second, the hollow fiber membrane filament assembly is made of a non-breaking reinforced membrane, which is highly durable, easy to operate, requires little maintenance, and ensures better water quality.

[0018] Third, this solution uses the insertion and positioning of the limiting block and the limiting groove, as well as the threaded connection for reinforcement, to ensure that the hollow fiber membrane core assembly is installed stably in the shell, can withstand the impact of high turbidity water, and is not easy to loosen or deform.

[0019] Fourth, the hollow fiber membrane core module in this solution adopts a single-end fixed structure, which makes sewage discharge more thorough, helps to avoid membrane fiber fouling and frequent cleaning, and results in a more stable water production. The sealing rubber gasket effectively prevents leakage of high turbidity water, ensuring the purification effect of the membrane module.

[0020] Fifth, after the membrane core is replaced, the membrane shell can still be used, which improves the utilization rate of the membrane shell and meets the requirements of environmental protection and sustainable development.

[0021] VI. The application of modified polyvinylidene fluoride membrane fibers and protective coatings in this solution improves the membrane module's resistance to pollution and corrosion, and extends its service life. Attached Figure Description

[0022] Figure 1This is an exploded view of the present invention;

[0023] Figure 2 This is an assembly diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the limiting groove of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the upper cover of this utility model.

[0026] Explanation of the labels in the diagram:

[0027] 1. Housing; 11. Limiting groove; 2. Upper cover; 21. First internal thread; 3. Lower cover; 4. Hollow fiber membrane core assembly; 41. Upper end block; 42. Lower end block; 43. Hollow fiber membrane filament assembly; 44. Limiting ring; 45. Limiting block; 46. First external thread; 5. Second internal thread; 6. Second external thread; 7. Sealing rubber gasket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-4 A durable high-turbidity water purification membrane module includes a housing 1, an upper cover 2, a lower cover 3, and a hollow fiber membrane core assembly 4, the hollow fiber membrane core assembly 4 being assembled inside the housing 1. The upper cover 2 and the lower cover 3 are detachably and fixedly installed at both ends of the housing 1, specifically: the upper cover 2 and the lower cover 3 are threadedly connected to the housing 1, and the upper cover 2 and the lower cover 3 are provided with a second internal thread 5 inside, and a second external thread 6 is provided on the outer surface of both ends of the housing 1, making disassembly and assembly convenient.

[0030] The hollow fiber membrane core assembly 4 includes an upper end block 41, a lower end block 42, and a hollow fiber membrane filament assembly 43. The upper end block 41 and the lower end block 42 are respectively disposed at both ends of the hollow fiber membrane filament assembly 43. The upper end block 41 and the lower end block 42 are adapted to the housing 1. A limiting ring 44 is fitted on the outer side of the upper end block 41 and fixedly connected thereto. A plurality of limiting blocks 45 evenly distributed in a ring shape are fixedly connected to the bottom of the limiting ring 44. The limiting blocks 45 are fixedly connected to the surface of the upper end block 41. A limiting groove 11 is opened on the top of the housing 1 corresponding to the limiting blocks 45. When the hollow fiber membrane core assembly 4 is assembled on the housing 1, the limiting blocks 45 are inserted into the limiting groove 11, thereby achieving the initial positioning and fixation of the hollow fiber membrane core assembly 4. Sealing rubber gaskets 7 are provided on the contact surface between the housing 1 and the limiting ring 44, and on the contact surface between the limiting groove 11 and the limiting blocks 45, to effectively prevent leakage of high turbidity water.

[0031] The upper block 41 has a first external thread 46 on its surface above the limiting ring 44, and the upper cover 2 has a first internal thread 21 inside. The upper block 41 and the upper cover 2 are threaded together by the first external thread 46 and the first internal thread 21, further enhancing the stability of the connection. The hollow fiber membrane core assembly 4 adopts a single-end fixed structure, which makes the sewage discharge more thorough, helps to avoid membrane fiber fouling and frequent cleaning, and makes the water production more stable.

[0032] Furthermore, the hollow fiber membrane fiber assembly 43 is made of a non-broken fiber reinforced membrane, which is highly durable, easy to operate, requires minimal maintenance, and ensures better effluent water quality. Non-broken fiber reinforced hollow fiber membrane fibers typically need to possess high strength, toughness, and tensile strength to reduce the risk of fiber breakage during use. The following are the membrane fiber materials:

[0033] Polysulfone materials possess excellent chemical stability, resisting the erosion of various chemicals and maintaining stable performance even under complex water quality conditions. They also exhibit high mechanical strength and toughness, capable of withstanding a certain degree of tension and bending without easily breaking. Furthermore, polysulfone materials demonstrate excellent film-forming properties, enabling the fabrication of hollow fiber membranes with uniform pore size and good separation performance. Examples include polysulfone (PS) and polyethersulfone (PES).

[0034] Polyvinylidene fluoride (PVDF): PVDF exhibits excellent chemical resistance, showing good tolerance to most acids, alkalis, and organic solvents, enabling long-term use in harsh chemical environments. Its mechanical properties are outstanding, possessing high tensile strength and tear resistance, making hollow fiber membranes made from it less prone to breakage under external forces. Furthermore, PVDF demonstrates good weather resistance and anti-aging properties, maintaining stable performance under varying temperature and climatic conditions.

[0035] Polypropylene (PP): Polypropylene is a low-cost, widely available polymer material with good chemical stability and biocompatibility. It has good mechanical properties, especially maintaining a certain degree of flexibility and impact resistance even at low temperatures. Furthermore, the hydrophobic nature of polypropylene gives it a unique advantage in treating special water qualities such as oily wastewater, as it is less susceptible to contamination by oily substances.

[0036] Polyester materials: Polyester materials possess high strength and modulus, enabling them to withstand significant external forces without easily deforming. They also exhibit good wear resistance and fatigue resistance, making them less prone to fatigue fracture during long-term use. Furthermore, polyester materials demonstrate good chemical stability, offering a degree of resistance to the corrosive effects of acids, alkalis, and other chemicals. Examples include polyethylene terephthalate (PET) and polybutylene terephthalate (PBT).

[0037] Hydrophilic polytetrafluoroethylene (PTFE) material: PTFE possesses an extremely stable chemical structure. Fluorine atoms and carbon atoms in its molecular chain form very strong covalent bonds, giving PTFE excellent resistance to most chemicals, such as strong acids (e.g., sulfuric acid, nitric acid, hydrochloric acid), strong alkalis (e.g., sodium hydroxide, potassium hydroxide), and strong oxidants. The chemical inertness of PTFE material makes its surface less prone to chemical reactions with pollutants, reducing the adhesion and accumulation of pollutants on the membrane surface. Simultaneously, the hydrophilic modification gives the membrane surface good water wettability, enabling the formation of a uniform water film, further preventing contact between pollutants and the membrane surface. PTFE itself has high crystallinity and molecular chain regularity, giving it good mechanical strength. When fabricated into hollow fiber membrane filaments, its unique hollow structure further enhances the flexibility of the membrane filaments.

[0038] The outer surface of the housing 1 is coated with a protective coating composed of wear-resistant ceramic particles and high-temperature resistant resin. This coating exhibits excellent wear resistance and impact resistance, effectively protecting the housing 1 from external mechanical damage during use and further enhancing its durability. The surface of the hollow fiber membrane filament assembly 43 is coated with a hydrophilic nano-coating, which is titanium dioxide or aluminum oxide. This hydrophilic nano-coating effectively improves the hydrophilicity of the membrane filaments, reducing the adsorption of impurities from highly turbid water on the filament surface, thereby enhancing the membrane module's antifouling ability and durability, and extending its service life.

[0039] Working principle:

[0040] During assembly: Insert the hollow fiber membrane core assembly 4 into the housing 1, and align the limiting block 45 of the hollow fiber membrane core assembly 4 with the limiting groove 11 on the top of the housing 1, so that the limiting block 45 is inserted into the limiting groove 11. Thread the upper cover 2 to the second external thread 6 at one end of the housing 1 via the second internal thread 5, thus assembling the upper cover 2. During the rotation of the upper cover 2, the first internal thread 21 is threaded to the first external thread 46 of the upper end block 41, ensuring a tight connection between the hollow fiber membrane core assembly 4 and the housing 1, enhancing the stability of the connection; similarly, thread the lower cover 3 to the second external thread 6 at one end of the housing 1 via the second internal thread 5, completing the assembly of the membrane module.

[0041] In use: During the high-turbidity water purification process, the high-turbidity water enters the housing 1 of the membrane module. Under pressure, the high-turbidity water is filtered and purified through the hollow fiber membrane filament assembly 43, and the purified water flows out from inside the membrane filaments. When the membrane core becomes contaminated or damaged after a period of use, the upper cover 2 can be disassembled by following the reverse assembly steps described above, and the hollow fiber membrane core assembly 4 can be removed for replacement. The housing 1 can be reused, saving costs.

[0042] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A durable high-turbidity water purification membrane module, comprising a housing (1), an upper cover (2), a lower cover (3), and a hollow fiber membrane core assembly (4), characterized in that: The upper cover (2) and the lower cover (3) are respectively detachably and fixedly installed at both ends of the housing (1), and the hollow fiber membrane core assembly (4) is assembled inside the housing (1); The hollow fiber membrane core assembly (4) includes an upper end block (41), a lower end block (42), and a hollow fiber membrane filament assembly (43). The upper end block (41) and the lower end block (42) are respectively disposed at both ends of the hollow fiber membrane filament assembly (43). The membrane filament material of the hollow fiber membrane filament assembly (43) is made of polyethersulfone, polyvinylidene fluoride, polypropylene, or polytetrafluoroethylene. The upper block (41) and lower block (42) are adapted to the housing (1). The upper block (41) is fitted with a limiting ring (44) fixedly connected to it. The bottom of the limiting ring (44) is fixedly connected with a plurality of limiting blocks (45) evenly distributed in a ring shape. The limiting blocks (45) are fixedly connected to the surface of the upper block (41). The top of the housing (1) is provided with a limiting groove (11) corresponding to the limiting block (45). When the hollow fiber membrane core assembly (4) is assembled on the housing (1), the limiting block (45) is inserted into the limiting groove (11). The upper end block (41) has a first external thread (46) on its surface and above the limiting ring (44), and the upper cover (2) has a first internal thread (21) inside. The upper end block (41) and the upper cover (2) are threadedly connected by the first external thread (46) and the first internal thread (21).

2. The durable high-turbidity water purification membrane module according to claim 1, characterized in that: The upper cover (2) and the lower cover (3) are threadedly connected to the shell (1), and the upper cover (2) and the lower cover (3) are provided with a second internal thread (5). The outer surfaces of both ends of the shell (1) are provided with a second external thread (6).

3. The durable high-turbidity water purification membrane module according to claim 1, characterized in that: The contact surfaces of the housing (1) and the limiting ring (44), and the contact surfaces of the limiting groove (11) and the limiting block (45) are provided with sealing rubber pads (7).

4. The durable high-turbidity water purification membrane module according to claim 1, characterized in that: The outer surface of the housing (1) is provided with a protective coating.

5. A durable high-turbidity water purification membrane module according to claim 1, characterized in that: The hollow fiber membrane filament assembly (43) has a hydrophilic nano-coating on its surface, which is titanium dioxide or aluminum oxide.

Images