Hollow fiber filter membrane assembly

Abstract

The utility model relates to the technical field of membrane components, in particular to a hollow fiber filter membrane component which comprises an upper end cover, a middle barrel, a lower end cover and a filter component, the upper end cover is arranged at the top end of the middle barrel, a liquid inlet pipe communicated with an inner cavity of the upper end cover is arranged on the upper end cover, the lower end cover is arranged at the lower end of the middle barrel, and the filter component is arranged in the middle barrel. The filter assembly is arranged in the cavity of the middle barrel, and a liquid outlet pipe communicated with the cavity of the middle barrel is arranged on the middle barrel; the filtering assembly comprises an upper mounting base, a lower mounting base, a baffle and a plurality of hollow fiber membrane filaments, the hollow fiber membrane filaments are located between the upper mounting base and the lower mounting base, the baffle is located in an inner cavity of the upper end cover, the baffle is located between the liquid inlet pipe and the upper mounting base, and the baffle is arranged between the liquid inlet pipe and the upper mounting base, so that liquid inlet impact can be buffered; and meanwhile, a lifting fulcrum is provided, so that the assembly is convenient to disassemble and assemble, the maintenance efficiency is remarkably improved through the modular structural design, and the shutdown loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of membrane module technology, and in particular to a hollow fiber filter membrane module. Background Technology

[0002] Hollow fiber membrane modules are widely used in water treatment, biomedicine, and other fields. Their core function is solid-liquid separation via hollow fiber membrane filaments. Traditional membrane modules suffer from several drawbacks: direct liquid impact at the membrane filament inlet can easily cause structural damage; impurities accumulate on the membrane filament surface, lacking an effective cleaning path; unstable connection between the filter module and the housing leads to seal failure; a lack of pressure relief protection mechanisms under high-pressure conditions; and uneven fluid distribution during backwashing results in low cleaning efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the problems in the prior art where direct impact of liquid on the membrane fiber inlet of the filter membrane module easily causes structural damage and there is a lack of effective cleaning path when impurities accumulate on the surface of the membrane fiber, a hollow fiber filter membrane module is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a hollow fiber filter membrane assembly, including an upper end cover, a middle cylinder, a lower end cover and a filter assembly. The upper end cover is arranged at the top of the middle cylinder and has an inlet pipe that communicates with the inner cavity of the upper end cover. The lower end cover is arranged at the bottom of the middle cylinder and the filter assembly is arranged in the cavity of the middle cylinder. The middle cylinder has an outlet pipe that communicates with the cavity of the middle cylinder.

[0005] The filter assembly includes an upper mounting base, a lower mounting base, a baffle, and several hollow fiber membrane filaments. The hollow fiber membrane filaments are located between the upper and lower mounting bases, with their ends passing through the upper or lower mounting base on their respective sides. The ends of the hollow fiber membrane filaments are connected to the inner cavity of the upper or lower end cover on their respective sides. The upper and lower mounting bases are connected by a connecting post, and the upper mounting base and the baffle are connected by a connecting rod. The baffle is located in the inner cavity of the upper end cover and between the inlet pipe and the upper mounting base. By arranging the baffle between the inlet pipe and the upper mounting base, the inlet impact can be buffered, extending the membrane filament life. At the same time, it provides a lifting fulcrum for easy assembly and disassembly of the assembly. The modular structure design significantly improves maintenance efficiency and reduces downtime losses.

[0006] To address the problem of difficult-to-remove impurities accumulating inside the membrane fibers, a further feature includes a cleaning tube connected to the inner cavity of the lower end cap, with a plug inside the cleaning tube.

[0007] To address the issue of leakage caused by unstable filter assembly installation, the system further includes an installation groove on the upper part of the inner wall of the middle cylinder for accommodating the upper mounting seat. The upper mounting seat is fitted into the installation groove, and the lower mounting seat matches the inner cavity of the middle cylinder. The lower mounting seat can pass through the middle cylinder to reach the lower part of the middle cylinder.

[0008] To address the issue of sudden pressure changes damaging the membrane fibers, the filter assembly further includes a drain pipe. The upper end of the drain pipe passes through the upper mounting base and communicates with the inner cavity of the upper end cover, while the lower end of the drain pipe passes through the lower mounting base and communicates with the inner cavity of the lower end cover.

[0009] To address the issue of reduced cleaning efficiency due to diversion in the drain pipe, a filter assembly is further included, comprising a movable plug and a sliding connection between the movable plug and the upper end cap. The movable plug is used to seal the drain pipe.

[0010] To address the problem of complex operation caused by difficulty in resetting the movable plug, the filter assembly further includes a limiting plate on the movable plug and a reset element, with one end of the reset element abutting against the limiting plate and the other end abutting against a baffle.

[0011] To address the leakage problem caused by misalignment between the movable plug and the drain pipe, the system further includes an inlet section at the bottom of the movable plug that contracts from top to bottom towards the center.

[0012] The beneficial effects of this utility model are as follows: The hollow fiber filter membrane assembly provided by this utility model can buffer the impact of liquid inlet by arranging a baffle between the liquid inlet pipe and the upper mounting base, thereby extending the membrane fiber life. At the same time, it provides a lifting fulcrum to facilitate assembly and disassembly of the assembly. The modular structure design significantly improves maintenance efficiency and reduces downtime losses. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a utility model Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0016] Figure 3 This is a utility model Figure 2 A magnified structural diagram at point B in the middle.

[0017] In the diagram: 1. Upper end cap, 11. Inlet pipe, 2. Middle cylinder, 21. Outlet pipe, 22. Mounting groove, 3. Lower end cap, 31. Cleaning pipe, 32. Plug, 4. Filter assembly, 41. Upper mounting base, 42. Lower mounting base, 43. Baffle, 44. Hollow fiber membrane filament, 45. Drain pipe, 46. Movable plug, 461. Limiting plate, 462. Inlet section, 47. Reset element, 48. Connecting column, 49. Connecting rod. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] like Figure 1 This is a schematic diagram of the structure of the present invention. A hollow fiber filter membrane assembly includes an upper end cover 1, a middle cylinder 2, a lower end cover 3, and a filter assembly 4. The upper end cover 1 is arranged at the top of the middle cylinder 2, and an inlet pipe 11 communicating with the inner cavity of the upper end cover 1 is arranged on the upper end cover 1. The lower end cover 3 is arranged at the lower end of the middle cylinder 2. The filter assembly 4 is arranged in the cavity of the middle cylinder 2, and an outlet pipe 21 communicating with the cavity of the middle cylinder 2 is arranged on the middle cylinder 2.

[0020] like Figure 2 , 3 As shown, the filter assembly 4 includes an upper mounting base 41, a lower mounting base 42, a baffle 43, and several hollow fiber membrane filaments 44. The hollow fiber membrane filaments 44 are located between the upper mounting base 41 and the lower mounting base 42. The ends of the hollow fiber membrane filaments 44 pass through the upper mounting base 41 or the lower mounting base 42 on their respective sides. The ends of the hollow fiber membrane filaments 44 are connected to the inner cavity of the upper end cover 1 or the inner cavity of the lower end cover 3 on their respective sides. The upper mounting base 41 and the lower mounting base 42 are connected by a connecting post 48. The upper mounting base 41 and the baffle 43 are connected by a connecting rod 49. The baffle 43 is located in the inner cavity of the upper end cover 1 and between the liquid inlet pipe 11 and the upper mounting base 41. By arranging the baffle 43 between the liquid inlet pipe 11 and the upper mounting base 41, the liquid inlet impact can be buffered, the membrane filament life can be extended, and a lifting fulcrum can be provided to facilitate assembly and disassembly of the assembly. The modular structure design significantly improves maintenance efficiency and reduces downtime losses.

[0021] Furthermore, the baffle 43 is provided with diffusion holes. The baffle 43 adopts a porous diffusion structure with a diffusion hole diameter of 3-5mm, which reduces the liquid inlet flow rate.

[0022] like Figure 2 As shown, a cleaning pipe 31 communicating with the inner cavity of the lower end cover 3 is arranged on the lower end cover 3. A plug 32 is arranged inside the cleaning pipe 31. The bottom cleaning pipe 31 and the plug 32 form a cleaning channel to avoid long-term retention of impurities, establish a dedicated rinsing channel, and improve the convenience of cleaning.

[0023] like Figure 2 , 3 As shown, the upper part of the inner wall of the middle cylinder 2 is provided with a mounting groove 22 for accommodating the upper mounting seat 41. The upper mounting seat 41 is fitted into the mounting groove 22. The lower mounting seat 42 matches the inner cavity of the middle cylinder 2. The lower mounting seat 42 can pass through the middle cylinder 2 to reach the lower part of the middle cylinder 2. The double positioning structure ensures the reliability of the seal. The mounting groove 22 forms a stepped sealing surface, which, together with the rubber layer of the upper mounting seat 41, forms a double seal.

[0024] like Figure 2 , 3 As shown, the filter assembly 4 includes a drain pipe 45. The upper end of the drain pipe 45 passes through the upper mounting base 41 and communicates with the inner cavity of the upper end cover 1. The lower end of the drain pipe 45 passes through the lower mounting base 42 and communicates with the inner cavity of the lower end cover 3. This provides dynamic pressure relief protection and reduces the risk of membrane rupture.

[0025] like Figure 2 , 3 As shown, the filter assembly 4 includes a movable plug 46, which is slidably connected to the upper end cover 1. The movable plug 46 is used to block the drain pipe 45, control the drain channel according to the working conditions, and enhance the cleaning kinetic energy. The drain pipe 45 is depressurized for protection during filtration and is closed to form a cleaning environment during cleaning, preventing a large amount of cleaning liquid from flowing directly out of the drain pipe 45, which would result in a small amount of cleaning liquid flowing through the hollow fiber membrane filaments 44 and being unable to carry impurities.

[0026] The movable plug 46 has a limiting plate 461, and the filter assembly 4 includes a reset element 47. One end of the reset element 47 abuts against the limiting plate 461, and the other end abuts against the baffle 43. The automatic reset mechanism improves the continuity of operation. The reset element 47 is made of a corrosion-resistant spring, and the preload is set to 0.5-0.8N to balance the working pressure difference.

[0027] The lower part of the movable plug 46 has an inlet section 462 that tapers from top to bottom towards the center. The guiding structure improves the sealing reliability. The cone angle of the inlet section 462 of the movable plug 46 is designed to be 15°, ensuring that it can still be accurately embedded in the drain pipe 45 within a deviation range of ±2mm.

[0028] Work process:

[0029] The liquid to be treated enters the inner cavity of the upper cover 1 through the inlet pipe 11. After being blocked by the baffle 43, it is evenly dispersed and permeates through the hollow fiber membrane 44. At this time, the drain pipe 45 is in a conductive state, and part of the liquid is diverted through it to reduce the pressure on the membrane filament. The clean liquid is output from the outlet pipe 21.

[0030] During cleaning, pressing the movable plug 46 allows the inlet section 462 to quickly embed into the drain pipe 45, thus blocking the drain pipe 45. Pulling out the plug 32 allows cleaning fluid to be injected from the inlet pipe 11, penetrating the membrane fiber 44 and carrying away attached impurities. After cleaning, the reset element 47 automatically springs back the movable plug 46 to restore the drain function.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A hollow fiber filtration membrane module, characterized by, The device includes an upper end cap (1), a middle cylinder (2), a lower end cap (3), and a filter assembly (4). The upper end cap (1) is located at the top of the middle cylinder (2). An inlet pipe (11) communicating with the inner cavity of the upper end cap (1) is arranged on the upper end cap (1). The lower end cap (3) is located at the bottom of the middle cylinder (2). The filter assembly (4) is located inside the cavity of the middle cylinder (2). An outlet pipe (21) communicating with the cavity of the middle cylinder (2) is arranged on the middle cylinder (2). The filter assembly (4) includes an upper mounting base (41), a lower mounting base (42), a baffle (43), and a plurality of hollow fiber membrane filaments (44). The hollow fiber membrane filaments (44) are located between the upper mounting base (41) and the lower mounting base (42). The ends of the hollow fiber membrane filaments (44) pass through the upper mounting base (41) or the lower mounting base (42) on their respective sides. The ends of the hollow fiber membrane filaments (44) are connected to the inner cavity of the upper end cover (1) or the inner cavity of the lower end cover (3) on their respective sides. The upper mounting base (41) and the lower mounting base (42) are connected by a connecting post (48). The upper mounting base (41) and the baffle (43) are connected by a connecting rod (49). The baffle (43) is located in the inner cavity of the upper end cover (1) and is located between the liquid inlet pipe (11) and the upper mounting base (41).

2. A hollow fibre membrane module as claimed in claim 1, characterised in that: The lower end cover (3) is provided with a cleaning tube (31) that communicates with the inner cavity of the lower end cover (3), and a plug (32) is provided inside the cleaning tube (31).

3. A hollow fibre membrane module as claimed in claim 1, characterised in that: The upper part of the inner wall of the middle cylinder (2) is provided with a mounting groove (22) for accommodating the upper mounting seat (41). The upper mounting seat (41) is fitted into the mounting groove (22). The lower mounting seat (42) matches the inner cavity of the middle cylinder (2). The lower mounting seat (42) can pass through the middle cylinder (2) to reach the lower part of the middle cylinder (2).

4. A hollow fiber membrane module as claimed in claim 1, wherein: The filter assembly (4) includes a drain pipe (45), the upper end of which passes through the upper mounting base (41) and communicates with the inner cavity of the upper end cover (1), and the lower end of which passes through the lower mounting base (42) and communicates with the inner cavity of the lower end cover (3).

5. A hollow fibre membrane module as claimed in claim 4, characterised in that: The filter assembly (4) includes a movable plug (46) which is slidably connected to the upper end cap (1). The movable plug (46) is used to block the drain pipe (45).

6. A hollow fibre membrane module as claimed in claim 5, characterised in that: The movable plug (46) has a limiting piece (461), and the filter assembly (4) includes a reset element (47), one end of which abuts against the limiting piece (461) and the other end of which abuts against the baffle (43).

7. A hollow fibre membrane module as claimed in claim 5, characterised in that: The lower part of the movable plug (46) has an inlet section (462) that contracts from top to bottom toward the center.

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