Membrane assembly and filtering device

Abstract

The embodiment of the invention provides a membrane module and a filtering device, and relates to the technical field of membrane separation. The membrane assembly comprises a bearing end cover, a plurality of mounting through holes are formed in the bearing end cover, a membrane tube is mounted in each mounting through hole through a solid sealing joint, and each solid sealing joint is provided with a mass guide through hole and an anti-loosening structure; each solid and tight joint is inserted into the corresponding mounting through hole, and the solid and tight joints are in threaded connection with the mounting through holes; one end of the membrane tube is clamped between the corresponding solid sealing joint and the thread of the mounting through hole, and the other end of the membrane tube is closed. According to the membrane module and the filtering device, the membrane tube is mounted by adopting a mechanical structure, the mechanical structure is simple, and the membrane tube is high in mounting firmness, easy to replace and low in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of membrane separation, in particular to a membrane assembly and a filtering device. BACKGROUND

[0002] Membrane separation technology is an application technology that uses the principle of microfiltration of filter membranes to realize efficient solid-liquid separation, gas-liquid separation and gas-gas separation to purify specific media in mixed media, which is widely developed in the fields of environmental protection, new energy and life health.

[0003] At present, the membrane assembly structure for implementing membrane separation technology is mainly a traditional glue-sealed membrane assembly, which uses glue (usually epoxy resin glue or polyurethane glue) to bond the root of the membrane tube and the corresponding joint to achieve the suspension installation of the membrane tube. Such a glue-sealed membrane assembly has the following problems: the root of the membrane tube is brittle due to the solidification of the glue, and the membrane tube is prone to breakage with frequent swinging; once the membrane tube is damaged, it is difficult to replace, resulting in very high use cost.

[0004] In addition, some membrane assembly structures use mechanical structures to install the membrane tube, although glue is not used, but in order to ensure the firmness of the installation of the membrane tube, the mechanical structure used is complex, the cost is still high, and the membrane tube is not easy to replace. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a membrane assembly and a filtering device, in which the membrane tube is installed by a mechanical structure, and the mechanism structure is simple, the installation firmness of the membrane tube is high, the membrane tube is easy to replace, and the cost is low.

[0006] In a first aspect, the embodiments of the present application provide a membrane assembly, which comprises a supporting end cover, the supporting end cover is provided with a plurality of installation through holes, each installation through hole is provided with a membrane tube through a solid joint, the solid joint has a conductive through hole; each solid joint is inserted into the corresponding installation through hole, and the solid joint is threadedly connected with the installation through hole; one end of the membrane tube is clamped between the solid joint and the thread of the installation through hole, and extends to the same side of the supporting end cover, and the pipeline of the membrane tube is communicated with the other side of the supporting end cover through the corresponding conductive through hole.

[0007] In the above implementation process, the integration of the solid joint, the membrane tube and the supporting end cover is realized by thread connection, the membrane tube is clamped between the threads, the structure is simple and the connection is reliable. No glue is needed for bonding, which avoids the brittle breakage of the root of the membrane tube; the thread connection mode allows the single membrane tube to be independently disassembled and replaced, which reduces the use cost; the membrane tube is communicated with the other side of the supporting end cover through the conductive through hole, which ensures the smooth flow of fluid, is suitable for various separation scenes, and improves the practicability and stability of the membrane assembly as a whole.

[0008] In a possible implementation, the membrane tube has an inner diameter of 0.5 mm to 2000 mm, an outer diameter of 1 mm to 2000 mm, and a membrane thickness of 0.1 mm to 10 mm.

[0009] In the implementation process, the inner diameter, the outer diameter, and the membrane thickness of the membrane tube are within the above ranges, so that the membrane tube can be accurately matched with the solid sealing joint and the mounting through hole, the assembly process is smooth, and the assembly accuracy is improved. Different sizes can adapt to different filtering requirements and application scenarios, thereby expanding the application range of the membrane assembly. The unified size range facilitates standardized production, reduces manufacturing costs, guarantees the structural strength and filtering efficiency of the membrane tube, and balances performance and practicability.

[0010] In a possible implementation, the membrane thickness of the membrane tube is not less than the height of the thread, and optionally, the membrane thickness of the membrane tube is 1 to 5 times the height of the thread.

[0011] In the implementation process, the membrane thickness of the membrane tube is not less than the height of the thread, and optionally, the membrane thickness of the membrane tube is 1 to 5 times the height of the thread. This ensures that the membrane tube can form an effective seal and be firmly fixed during the thread extrusion process, avoids damage to the membrane tube due to its being too thin or loosening of the fixation due to insufficient thickness, and reasonably matches the thickness to guarantee the structural stability of the membrane assembly and maintain the filtering performance of the membrane tube, thereby prolonging the service life of the membrane tube, improving the sealing reliability, and reducing the risk of leakage.

[0012] In a possible implementation, the conductive through hole is arranged along a first axis, and the solid sealing joint includes an outer thread segment located at least in the middle of the first axis, and the outer thread segment has an outer thread for thread connection with the mounting through hole.

[0013] In a possible implementation, the conductive through hole has a diameter of 0.5 mm to 2000 mm, the outer thread segment has an outer diameter of 1 mm to 2200 mm and a length of 5 mm to 1000 mm.

[0014] In the implementation process, the solid sealing joint is provided with an outer thread segment to ensure accurate matching with the inner thread segment of the mounting through hole and improve the connection firmness. Reasonable ranges of the diameter of the conductive through hole and the size of the outer thread segment guarantee the conductivity efficiency and avoid water production congestion caused by a too small through hole. The overall structure design takes into account the connection stability and the conductivity performance, provides a reliable guarantee for efficient operation of the membrane assembly, and adapts to different flow and pressure requirements in application scenarios.

[0015] In a possible implementation, the solid sealing joint further includes a positioning segment located at one end of the first axis, the outer diameter of the positioning segment is greater than the outer diameter of the outer thread segment, the outer thread segment is inserted into the corresponding mounting through hole, and the positioning segment covers the mounting through hole.

[0016] In the implementation process, the positioning section is provided to enable accurate positioning of the fixed sealing joint during installation, reduce assembly difficulty, and improve assembly efficiency; the outer diameter of the positioning section is larger than that of the outer thread section and covers the installation hole, which not only avoids damage to the edge of the installation hole during installation, but also limits the fixed sealing joint to enhance the structural stability after installation. Precise positioning helps improve sealing effect, reduce leakage risk caused by installation deviation, and ensure overall operation reliability of the membrane assembly.

[0017] In a possible implementation, the end face corresponding to the positioning section is provided with a spanner groove (diameter of the fixed sealing joint ≤ 200 mm) or a handle (diameter of the fixed sealing joint > 200 mm).

[0018] In a possible implementation, an elastic gasket is arranged between the positioning section and the outer thread section.

[0019] In the implementation process, the spanner groove or handle provides a convenient operation point for disassembly and assembly of the fixed sealing joint, reduces the difficulty of membrane assembly maintenance and membrane tube replacement, and improves operation and maintenance efficiency; the additional elastic gasket further enhances the sealing performance, effectively blocks fluid leakage, and uses the pressure generated by elastic deformation to prevent loosening of the fixed sealing joint under long-term operation or strong disturbance conditions, thereby significantly improving the operation stability and service life of the membrane assembly.

[0020] In a possible implementation, the fixed sealing joint further includes an insertion section at one end of the first axis, the outer diameter of the insertion section is smaller than that of the outer thread section, and the insertion section is inserted into the corresponding installation hole. Optionally, the insertion section is a circular truncated cone.

[0021] In the implementation process, the insertion section is provided to enable accurate positioning of the fixed sealing joint when inserted into the installation hole, facilitate quick alignment of the outer thread section and the inner thread section, and improve assembly efficiency; the circular truncated cone-shaped insertion section design further optimizes the guiding effect, reduces frictional resistance during insertion, and enhances the fit with the installation hole. Precise positioning and smooth assembly ensure the firmness of the connection, avoid structural loosening or sealing failure caused by installation deviation, and improve the assembly quality, sealing performance, and stability of the membrane assembly.

[0022] In a possible implementation, the installation hole is arranged along the second axis, and the installation hole includes at least an inner thread section located in the middle of the second axis, and the inner thread section has an inner thread for thread connection with the fixed sealing joint.

[0023] In the implementation process, the position of the inner threaded section of the mounting through hole ensures that the inner threaded section is fully engaged with the outer threaded section of the solid joint, thereby improving the connection stability. The structural design provides a stable basis for the clamping and fixing of the membrane tube, thereby avoiding loosening or falling of the membrane tube due to unstable thread connection.

[0024] In a possible implementation, the mounting through hole further comprises a loosening prevention groove for placing an elastic gasket, the loosening prevention groove is located at one end of the second axial direction, the loosening prevention groove is connected with the inner threaded section, and the inner diameter of the loosening prevention groove is greater than the inner diameter of the inner threaded section. In a possible implementation, the mounting through hole further comprises a guiding section for matching the insertion section of the solid joint, the guiding section is connected with the inner threaded section, and the inner diameter of the guiding section is less than the inner diameter of the inner threaded section. In a possible implementation, the mounting through hole further comprises a cutting prevention flared portion, the cutting prevention flared portion is located at one end of the second axial direction.

[0025] In the implementation process, the loosening prevention groove provides a stable placement space for the elastic gasket, so that the elastic gasket can be tightly pressed against the solid joint, thereby enhancing the sealing and loosening prevention effect; the guiding section assists in accurate positioning of the solid joint, thereby improving the assembly efficiency; and the cutting prevention flared portion effectively prevents the membrane tube from being scratched by the edge of the mounting through hole during installation, thereby protecting the integrity of the membrane tube. The multiple structural optimizations comprehensively improve the functional practicability of the mounting through hole, and solve the problems of sealing and loosening prevention, installation positioning, and membrane tube protection, thereby ensuring the overall performance and service life of the membrane assembly.

[0026] In a possible implementation, the mounting through hole further comprises a loosening prevention plate, the loosening prevention plate covers the support end cover and is pressed against the solid joint.

[0027] In the implementation process, the loosening prevention plate covers the support end cover and is pressed against the solid joint, thereby limiting the axial displacement of the solid joint, further consolidating the connection stability, and reducing the loosening and leakage risks. The addition of the loosening prevention plate forms a multiple loosening prevention structure of thread connection, elastic gasket, and pressing of the plate, thereby greatly improving the loosening prevention effect, effectively dealing with harsh working conditions such as strong disturbance and long-term operation, and widening the application range.

[0028] In a second aspect, the embodiments of the present application provide a filtering device, which comprises a filtering container for containing a mixed medium and a membrane assembly provided by the first aspect, the membrane assembly being located in the filtering container and immersed in the mixed medium.

[0029] In the implementation process, the membrane assembly is combined with the filter container to form a filter device with reasonable structure. The membrane assembly is immersed in the mixed medium to fully contact the medium to be filtered, thereby improving the filtering efficiency. The excellent performance of the membrane assembly directly guarantees the separation effect of the filter device. The stability and convenient maintenance of the structure greatly improve the overall practicability of the filter device. The filter device is suitable for various application scenarios and can meet different filtering requirements, thereby providing reliable equipment support for the industrial application of membrane separation technology.

[0030] In a possible implementation, the filter device further comprises a mounting plate fixed inside the filter container, the supporting end cover of the membrane assembly is mounted on the mounting plate, and the membrane tube is suspended. And / or, the filter device further comprises a negative pressure suction device, which is located outside the filter container and communicates with one end of all the membrane tubes.

[0031] In the implementation process, the mounting plate is provided to stably mount the membrane assembly in the filter container. The membrane tube is suspended to ensure that it fully contacts the medium to be filtered, thereby improving the filtering efficiency and avoiding damage caused by collision with the container wall. The negative pressure suction device can meet the demand of negative pressure suction filtration, thereby improving the filtering speed and separation effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0033] Figure 1 A structural schematic diagram of a membrane assembly provided for the first embodiment of the present application; Figure 2 A structural schematic diagram of a solid seal joint in Figure 1 Figure 3 A structural schematic diagram of a supporting cover plate in Figure 1 A structural schematic diagram of the membrane assembly fixed to the mounting plate in Figure 4 Figure 1 A structural schematic diagram of the membrane assembly fixed to the mounting plate in Figure 5 A structural schematic diagram of a membrane assembly provided for the second embodiment of the present application; Figure 6 A structural schematic diagram of the membrane assembly fixed to the mounting plate in Figure 5

[0034] ​​​Icons: 1-Membrane module; 2-Membrane tube; 3-Sealing joint; 4-Support end cap; 5-Anti-loosening pressure plate; 6-Elastic washer; 7-Insertion section; 8-External thread section; 9-Screwdriver groove; 10-Anti-loosening washer; 11-Internal thread section; 12-Anti-loosening groove; 13-Bolt hole; 14-Guide section; 15-Anti-cutting flare; 16-Mounting plate; 17-Conducting through hole; 18-Positioning section; 19-Mounting through hole; 20-Bolt. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] First Embodiment Please refer to Figures 1-3 This embodiment provides a membrane module 1, which includes a support end cap 4. The support end cap 4 is provided with a plurality of mounting through holes 19. A membrane tube 2 is installed in each mounting through hole 19 through a sealing joint 3. The sealing joint 3 has a mass-conducting through hole 17. Each sealing joint 3 is inserted into the corresponding mounting through hole 19 and is threadedly connected to the mounting through hole 19. One end of the membrane tube 2 is snapped between the thread of the corresponding sealing joint 3 and the mounting through hole 19 and extends to the same side of the support end cap 4. The tube of the membrane tube 2 is connected to the other side of the support end cap 4 through the corresponding mass-conducting through hole 17.

[0043] In this embodiment, the tight connector 3, membrane tube 2, and support end cap 4 are integrated and fixed through a threaded connection. The membrane tube 2 is snapped into the threads, resulting in a simple structure and reliable connection. No glue is required, preventing the root of the membrane tube 2 from becoming brittle and breaking. The threaded connection allows for independent disassembly and replacement of individual membrane tubes 2, simplifying replacement and reducing operating costs. The membrane tube 2 is connected to the other side of the support end cap 4 through the conductive through-hole 17, ensuring smooth flow and making it suitable for various separation scenarios. Overall, this improves the practicality and stability of the membrane module 1.

[0044] Membrane tube 2 : In one possible implementation, the membrane tube 2 has the following shapes: hollow fiber, tubular, tube-bag, or bag-shaped. The inner diameter of the membrane tube 2 is 0.5mm-2000mm, the outer diameter is 1mm-2000mm, and the membrane thickness is 0.1mm-10mm. The heating inner diameter of the membrane tube 2 matches the diameter of the sealing joint 3, allowing it to fit snugly onto the sealing joint 3 from its open end.

[0045] In one possible implementation, the filter membrane material of membrane tube 2 includes polyolefin materials such as polyethylene (PE) / polypropylene (PP), polysulfone materials such as polyethersulfone (PES) / polysulfone (PS), cellulose materials such as cellulose acetate (CA) / cellulose triacetate (CTA), aromatic polyamide materials, perfluorinated, perfluorinated-like, and fluorinated polymer materials such as polyacrylonitrile (PAN), polyether ether ketone (PEEK), and PTFE / ETFE / ECTFE / PVDF; the filtration accuracy of membrane tube 2 is 1 nm-1 μm, and it has a porous separation membrane structure.

[0046] In some embodiments of this application, the membrane thickness of the membrane tube 2 is not less than the thread height. Optionally, the membrane thickness of the membrane tube 2 is 1 to 5 times the thread height.

[0047] In this embodiment, the membrane thickness of the membrane tube 2 is not less than the thread height, and can be selected within a range of 1-5 times. This ensures that the membrane tube 2 can form an effective seal and be firmly fixed during the thread extrusion process, avoiding damage to the threads due to the membrane tube 2 being too thin or loosening due to insufficient thickness. A reasonable thickness matching relationship not only ensures the structural stability of the membrane module 1, but also maintains the filtration performance of the membrane tube 2, extends the service life of the membrane tube 2, and improves the sealing reliability, reducing the risk of leakage.

[0048] Solid joint 3 : In some embodiments of this application, the conductive through-hole 17 is disposed along a first axial direction, and the sealing joint 3 includes an externally threaded section 8 located at least in the middle of the first axial direction. The externally threaded section 8 has external threads for threaded connection with the mounting through-hole 19; the externally threaded section 8 adopts GB / T7306 sealing pipe thread, GB / T ordinary thread, or non-standard thread. The open end of the membrane tube 2 covers 80% to 90% of the area of ​​the externally threaded section 8.

[0049] In some embodiments of this application, the diameter of the conductive through hole 17 is 0.5mm-2000mm; the outer diameter of the external thread section 8 is 1mm-2200mm, and the length is 5mm-1000mm.

[0050] In this embodiment, the sealing connector 3 is provided with an external thread section 8 to ensure precise matching with the internal thread section 11 of the mounting through hole 19, thereby improving the connection's robustness. A reasonable range of diameter for the conductive through hole 17 and the size of the external thread section 8 ensures efficient mass conduction and avoids clogging caused by an excessively small through hole. The overall structural design balances connection stability and mass conduction performance, providing a reliable guarantee for the efficient operation of the membrane module 1 and adapting to application scenarios with different flow and pressure requirements.

[0051] In some embodiments of this application, the sealing joint 3 further includes a positioning section 18 located at one end of the first axial direction. The outer diameter of the positioning section 18 is larger than the outer diameter of the external thread section 8. The external thread section 8 is inserted into the corresponding mounting through hole 19, and the positioning section 18 covers the mounting through hole 19.

[0052] In this embodiment, the positioning section 18 enables precise alignment of the sealing connector 3 during installation, reducing assembly difficulty and improving assembly efficiency. The outer diameter of the positioning section 18 is larger than that of the external thread section 8 and covers the mounting through hole 19, which avoids damage to the edge of the mounting through hole 19 during installation and also limits the sealing connector 3, enhancing structural stability after installation. Precise positioning also helps improve the sealing effect, reduces the risk of leakage due to installation misalignment, and ensures the overall operational reliability of the membrane module 1.

[0053] In some embodiments of this application, the end face corresponding to the positioning segment 18 is provided with a screwdriver groove 9, and the diameter of the corresponding sealing connector 3 is ≤200mm; and / or, an elastic washer 6 is provided between the positioning segment 18 and the external thread segment 8. The screwdriver groove 9 is a "+" or other shape. The elastic washer 6 is made of elastic materials such as silicone, rubber, and fluororubber. In other embodiments, the end face corresponding to the positioning segment is provided with a handle, and the diameter of the corresponding sealing connector 3 is >200mm.

[0054] In this embodiment, the screwdriver groove 9 provides a convenient operating point for the disassembly and assembly of the sealing joint 3, reducing the difficulty of maintaining the membrane module 1 and replacing the membrane tube 2, and improving the operation and maintenance efficiency; the addition of the elastic gasket 6 further enhances the sealing performance, effectively blocking fluid leakage, and at the same time, the pressure generated by the elastic deformation plays an anti-loosening role, avoiding the loosening of the sealing joint 3 under long-term operation or strong disturbance conditions, which significantly improves the operational stability and service life of the membrane module 1.

[0055] In some embodiments of this application, the sealing connector 3 further includes an insertion section 7 located at one end of the first axial direction. The outer diameter of the insertion section 7 is smaller than the outer diameter of the external thread section 8. The insertion section 7 is inserted into the corresponding mounting through hole 19. Optionally, the insertion section 7 is frustoconical.

[0056] In this embodiment, the insertion section 7 enables precise guidance and positioning of the sealing connector 3 when inserted into the mounting through hole 19, facilitating quick alignment of the external thread section 8 and the internal thread section 11, thus improving assembly efficiency. The frustum-shaped insertion section 7 further optimizes the guiding effect, reduces frictional resistance during insertion, and enhances the fit with the mounting through hole 19. Precise positioning and smooth assembly ensure the robustness of the connection, preventing structural loosening or sealing failure due to installation deviations, and improving the assembly quality, sealing performance, and stability of the membrane module 1.

[0057] Support end cap 4 : The support end cap 4 is made of high molecular polymer materials such as UPVC / CPVC / ABS / PP / PE / PTFE. The support end cap 4 has shapes including circular, polygonal, and rectangular, and can be used to form column-type membrane module 1 and curtain-type membrane module 1, respectively.

[0058] In some embodiments of this application, the mounting through hole 19 is provided along a second axial direction, and the mounting through hole 19 includes an internal threaded section 11 located at least in the middle of the second axial direction, the internal threaded section 11 having internal threads for threaded connection with the sealing joint 3.

[0059] In this embodiment, the position of the internal thread section 11 of the mounting through hole 19 ensures that the internal thread section 11 fully engages with the external thread section 8 of the sealing connector 3, improving the connection firmness. This structural design provides a stable foundation for the snap-fit ​​fixing of the membrane tube 2, avoiding loosening or falling off of the membrane tube 2 due to an insecure threaded connection.

[0060] In some embodiments of this application, the mounting through hole 19 further includes an anti-loosening groove 12 for placing the elastic washer 6. The anti-loosening groove 12 is located at one end of the second axis, the anti-loosening groove 12 is connected to the internal thread section 11, and the inner diameter of the anti-loosening groove 12 is larger than the inner diameter of the internal thread section 11. And / or, the mounting through hole 19 also includes a guide section 14 for mating with the insertion section 7 of the sealing connector 3, the guide section 14 being connected to the internal thread section 11, and the inner diameter of the guide section 14 being smaller than the inner diameter of the internal thread section 11. And / or, the mounting through hole 19 also includes a cut-resistant flare 15, which is located at one end of the second axis.

[0061] In this embodiment, the anti-loosening groove 12 provides a stable placement space for the elastic washer 6, allowing the elastic washer 6 to be tightly pressed against the sealing joint 3, enhancing the sealing and anti-loosening effect; the guide section 14 assists in the precise positioning of the sealing joint 3, improving assembly efficiency; the anti-cutting flare 15 effectively prevents the membrane tube 2 from being scratched by the edge of the installation through hole 19 during installation, protecting the integrity of the membrane tube 2. Multiple structural optimizations comprehensively improve the functionality and practicality of the installation through hole 19, solving the problems of sealing and anti-loosening, installation positioning, and membrane tube 2 protection, ensuring the overall performance and service life of the membrane module 1.

[0062] In this embodiment, the membrane tube 2 is a tube-bag filter membrane with a filtration accuracy of 0.2μm and is made of e-PTFE material; the sealing connector 3 is made of UPVC. The support end cap 4 is polygonal and made of UPVC material. The support end cap 4 has evenly distributed through mounting holes 19, which serve to support and seal the sealing connector 3; the support end cap 4 has bolt holes 13 for overall installation and fixation.

[0063] The sealing connector 3 is provided with an external thread section 8 that matches the internal thread section 11. The diameter of the sealing connector 3 is 0.5 times smaller than the diameter of the internal thread section 11 than the thickness of the membrane tube 2. The membrane tube 2 is squeezed by the internal and external threads in this space to achieve the function of fixing and sealing. The thread is GB / T 7306 sealing thread 1 / 4”, with a thread height of 0.856mm, 8 threads, and a rounded thread shape to avoid cutting the membrane layer. The elastic washer 6 at the top of the external thread section 8 is made of silicone. A conductive through hole 17 is formed inside the sealing connector 3. A screwdriver groove 9 with a straight structure is opened at the top of the sealing connector 3. The screwdriver groove 9 is designed to facilitate the disassembly and assembly of the sealing connector 3 using a screwdriver.

[0064] During assembly, insert the open end of the membrane tube 2 into the sealing connector 3 up to below the elastic washer 6. Vertically insert the membrane tube 2 with the sealing connector 3 into the mounting through hole 19 of the support end cover 4. Use a flathead screwdriver to screw the external thread section 8 of the sealing connector 3 into the internal thread section 11 of the support end cover 4 until the elastic washer 6 is engaged in the anti-loosening groove 12, so that the membrane tube 2 is fixed and sealed on the support end cover 4. After all the internal thread sections 11 of the support end cover 4 are filled.

[0065] In addition, this embodiment also provides a filtration device, which includes a filtration container for containing liquid and a membrane module 1 provided in the foregoing embodiment, wherein the membrane module 1 is located in the filtration container and is immersed in the liquid.

[0066] In this embodiment, membrane module 1 is combined with a filter container to form a structurally sound filtration device. The membrane module 1, immersed in the liquid, ensures full contact with the medium to be filtered, thus improving filtration efficiency. The superior performance of membrane module 1 directly guarantees the separation effect of the filtration device, and its structural stability and ease of maintenance significantly enhance its overall practicality. This filtration device is adaptable to various application scenarios, meeting diverse filtration needs and providing reliable equipment support for the industrial application of membrane separation technology.

[0067] Please refer to the following: Figure 4 The filtration device also includes a mounting plate 16 fixed inside the filtration container, the supporting end cap 4 of the membrane module 1 is mounted on the mounting plate 16, and the membrane tube 2 is suspended.

[0068] In this embodiment, the mounting plate 16 enables the membrane module 1 to be stably installed in the filter container, and the suspended arrangement of the membrane tube 2 ensures that it is in full contact with the medium to be filtered, thereby improving the filtration efficiency, while avoiding damage to the membrane tube 2 from collision with the container wall.

[0069] In this embodiment, the membrane module 1 is mounted on the mounting plate 16 of the filter container (in this embodiment, the filter tank). The mounting plate 16 is located inside the filter tank, separating the inlet water area and the product water area. The mounting plate 16 is equipped with bolts 20 and through holes. The bolts 20 on the mounting plate 16 are in the same position and size as the bolt holes 13 on the supporting end cover 4. The through holes on the mounting plate 16 are sized to allow the membrane tube 2 of the membrane module 1 to pass through. In this embodiment, the mounting plate 16 is made of duplex steel 2205.

[0070] In some embodiments of this application, the filtration device further includes a negative pressure suction device located outside the filtration container and connected to one end of all membrane tubes 2. In this embodiment, the addition of the negative pressure suction device can meet the requirements of negative pressure suction filtration, thereby improving the filtration speed and separation effect.

[0071] Second Embodiment Please refer to Figure 5 The membrane module provided in this embodiment differs from that in the first embodiment in that: the membrane module in this embodiment is a curtain-type external pressure filtration membrane module, and the supporting end cap 4 is rectangular; the membrane tube 2 and the sealing connector 3 are the same as those in the first embodiment, and the assembly method of the membrane module is the same as that in the first embodiment.

[0072] In one possible implementation, an anti-loosening pressure plate 5 is also included, which covers the support end cover 4 and presses against the sealing joint 3. In this embodiment, the anti-loosening pressure plate 5 is added. The assembly method is to fill all the mounting through holes 19 of the support end cover 4, and then fix the anti-loosening pressure plate 5 to the mounting plate 16 with bolts 20.

[0073] In this embodiment, the anti-loosening pressure plate 5 covers the supporting end cap 4 and presses against the sealing joint 3, limiting the axial displacement of the sealing joint 3, further consolidating the connection stability, and reducing the risk of loosening and leakage. The addition of the anti-loosening pressure plate 5 forms a multi-layered anti-loosening structure with threaded connection, elastic washer 6, and pressure plate pressing, which greatly improves the anti-loosening effect, effectively copes with harsh working conditions such as strong disturbances and long-term operation, and broadens its application range.

[0074] Please refer to the following: Figure 6 This embodiment also provides a filtration device, which is basically the same as the filtration device in the first embodiment. In this embodiment, an anti-loosening gasket 10 is provided between the mounting plate 16 and the membrane module. During assembly, the anti-loosening gasket 10 is pressed to the sealing joint 3, and then the anti-loosening pressure plate 5 is fastened on the support end cover 4 and fixed with bolts 20.

[0075] In summary, the membrane tubes in the membrane modules and filtration devices of this application are installed using a mechanical structure, which is simple in structure, has high installation reliability, is easy to replace, and has low cost.

[0076] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A membrane module, characterized in that, It includes a support end cap, which has multiple mounting through holes. A membrane tube is installed in each mounting through hole via a sealing joint. The sealing joint has a mass-conducting through hole. Each sealing joint is inserted into a corresponding mounting through hole and is threadedly connected to the mounting through hole. One end of the membrane tube is engaged between the threads of the corresponding sealing joint and the mounting through hole and extends to the same side of the support end cap. The membrane tube is connected to the other side of the support end cap through the corresponding mass-conducting through hole.

2. The membrane module according to claim 1, characterized in that, The thickness of the membrane tube is not less than the thread height. Optionally, the thickness of the membrane tube is 1 to 5 times the thread height.

3. The membrane module according to claim 1 or 2, characterized in that, The inner diameter of the membrane tube is 0.5mm-2000mm, the outer diameter is 1mm-2000mm, and the membrane thickness is 0.1mm-10mm.

4. The membrane module according to claim 1, characterized in that, The conductive through-hole is disposed along a first axial direction, and the sealing joint includes an external threaded section located at least in the middle of the first axial direction, the external threaded section having an external thread for threaded connection with the mounting through-hole; Optionally, the diameter of the conductive through hole is 0.5mm-2000mm; the outer diameter of the external thread section is 1mm-2200mm, and the length is 5mm-1000mm.

5. The membrane module according to claim 4, characterized in that, The sealing joint further includes a positioning section located at one end of the first axial direction. The outer diameter of the positioning section is larger than the outer diameter of the external thread section. The external thread section is inserted into the corresponding mounting through hole, and the positioning section covers the mounting through hole.

6. The membrane module according to claim 5, characterized in that, The end face corresponding to the positioning segment is provided with a screwdriver groove; And / or, an elastic washer is provided between the positioning section and the external thread section.

7. The membrane module according to claim 4, characterized in that, The sealing joint further includes an insertion section located at one end of the first axial direction. The outer diameter of the insertion section is smaller than the outer diameter of the external thread section. The insertion section is inserted into the corresponding mounting through hole. Optionally, the insertion section is frustum-shaped.

8. The membrane module according to claim 1 or 4, characterized in that, The mounting through hole is provided along the second axial direction, and the mounting through hole includes an internal threaded section located at least in the middle of the second axial direction, the internal threaded section having internal threads for threaded connection with the sealing joint.

9. The membrane module according to claim 8, characterized in that, The mounting through hole also includes an anti-loosening groove for placing an elastic washer. The anti-loosening groove is located at one end of the second axial direction. The anti-loosening groove is connected to the internal thread section, and the inner diameter of the anti-loosening groove is larger than the inner diameter of the internal thread section. And / or, the mounting through hole further includes a guide section for matching the insertion section of the sealing joint, the guide section being connected to the internal thread section, and the inner diameter of the guide section being smaller than the inner diameter of the internal thread section; And / or, the mounting through hole further includes a cut-resistant flare, which is located at one end of the second axial direction.

10. The membrane module according to claim 1, characterized in that, It also includes an anti-loosening pressure plate, which covers the supporting end cap and presses against the sealing joint.

11. A filtration device, characterized in that, It includes a filter container for containing liquid and a membrane assembly as described in any one of claims 1-10, the membrane assembly being located within the filter container and immersed in the liquid.

12. The filtration device according to claim 11, characterized in that, The filtration device further includes a mounting plate fixed inside the filtration container, the supporting end cap of the membrane module is mounted on the mounting plate, and the membrane tube is suspended. And / or, the filtration device further includes a negative pressure suction device located outside the filtration container and connected to one end of all the membrane tubes.

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