CN210480931U

CN210480931U - U-shaped hollow fiber membrane filtering device

Info

Publication number: CN210480931U
Application number: CN201921098214.1U
Authority: CN
Inventors: 周江; 钟卫权; 付伟; 骆兴州
Original assignee: Zhejiang Dongyang Environmental Engineering Co ltd
Current assignee: Zhejiang Dongyang Environmental Engineering Co ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-05-08
Anticipated expiration: 2029-07-15

Abstract

The utility model relates to a U-shaped hollow fiber membrane filter equipment belongs to filter equipment technical field. Include the membrane shell, the upper end plate, the center tube, two at least membrane support frames and hollow fiber membrane, all be provided with the water distribution hole on the center tube of this application and the membrane support frame, and include the water distribution hole of the directional membrane shell upper end of partial opening direction on the membrane support frame, can make the water distribution more even, avoid raw material liquid because the uneven membrane that leads to of water distribution atress and the different problem of concentration difference that receives about the membrane to make the aeration more even during the backwash, the filth on membrane surface gets rid of efficiently.

Description

U-shaped hollow fiber membrane filtering device

Technical Field

The utility model belongs to the technical field of filter equipment, concretely relates to U-shaped hollow fiber membrane filter equipment.

Background

The hollow fiber membrane is a membrane having a self-supporting function and a fibrous shape. The membrane filament arrangement mode with straight upper part and straight lower part is adopted in the common membrane filter, but the membrane utilization rate of the membrane arrangement mode per unit volume is low.

The membrane structure is also improved by others, like the invention patent with application number of CN200910201525.0 applied on 21/12/2009 in the university, which adopts a hollow fiber membrane module, wherein the hollow fiber membrane is arranged in a membrane shell in a U shape, the hollow fiber membrane fully utilizes the space in the membrane shell, and the electric field is used for improving the filtration efficiency and reducing the pollution, but the defects of insufficient uniform water distribution and general backwashing effect still exist.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the utility model provides a U-shaped hollow fiber membrane filter equipment, it is used for filtering liquid phase material, has that the water distribution is even, the effectual characteristics of back flush.

The utility model provides a technical scheme as follows of above-mentioned problem:

u-shaped hollow fiber membrane filtration device, contains:

the membrane shell is provided with a water producing port, a concentrated water port and a backwashing discharge port;

an upper end plate disposed in an upper region within the membrane shell;

the central pipe is arranged in the membrane shell and penetrates through the upper end plate, the upper end of the central pipe is provided with a water inlet, and the pipe wall of the central pipe is provided with a first water distribution hole;

the membrane supporting frames are arranged at the position, below the upper end plate, of the central pipe at intervals and communicated with the central pipe, membrane fixing holes and second water distribution holes are formed in the membrane supporting frames, and the opening direction of one part of the second water distribution holes points to the upper end of the membrane shell;

and the two ends of the hollow fiber membrane are fixedly connected to the upper end plate, the two ends of the hollow fiber membrane are communicated with the area above the upper end plate, and the membrane tube of the hollow fiber membrane penetrates through the membrane fixing hole and is limited in the membrane shell.

The up-down direction in the present application is the same as the up-down direction in the drawings of the specification.

The central pipe and the membrane support frame are both provided with water distribution holes, and the membrane support frame comprises water distribution holes with partial opening directions pointing to the upper end of the membrane shell, so that water distribution is more uniform, and the problems of different membrane upper and lower stresses and different received concentration differences caused by uneven water distribution of raw material liquid are avoided.

Preferably, in the above technical solution, the water producing port is disposed on an outer wall of the membrane shell, and the outer wall is located on the upper end plate.

Preferably, in the above aspect, the concentrate inlet is provided in an outer wall of the membrane housing, and the outer wall is located below the hollow fiber membrane.

Preferably, the backwash discharge port is provided at the bottom end of the membrane shell.

Preferably, in the above technical solution, the upper end plate is an integrated end plate formed by casting epoxy resin.

Preferably, the lower end of the central tube is closed.

Preferably, the membrane support frame is composed of a plurality of outwardly extending support rods, and the membrane fixing holes and the second water distribution holes are formed in the support rods.

Preferably, according to the above technical scheme, the number of the second water distribution holes on the membrane support frame is gradually increased from top to bottom.

Preferably, according to the above technical scheme, the number of the second water distribution holes pointing to the lower end of the membrane shell along the direction of the opening on the membrane support frame is gradually increased from top to bottom.

Downwards, the quantity of the second water distribution holes of the membrane support frame, the direction of the upper opening of which points to the lower end of the membrane shell, is gradually increased, so that water distribution is more uniform during filtering, aeration during back washing can be more uniform, and the cleaning effect of the aeration on the dirt on the surface of the membrane is better.

Preferably, in the membrane shell, a sewage guide groove is arranged below the hollow fiber membrane, the sewage guide groove is funnel-shaped, the caliber of the sewage guide groove is gradually reduced from top to bottom, the sewage guide groove is particularly used for collecting and removing solid-phase substances (such as metal oxide particles) of a solid-liquid separation system, the substances have high viscosity, and the substances need to be collected and discharged by the guide groove with a guide structure.

To sum up, the utility model discloses following beneficial effect has:

the application provides a U-shaped hollow fiber membrane filtering device, which is used for filtering liquid phase substances, and has uniform water distribution, so that the pressure of feed liquid and the concentration of the feed liquid on a hollow fiber membrane are uniform, and the filtering stability and effect are improved; and the aeration is more uniform during backwashing, and the dirt removal efficiency on the membrane surface is high.

Drawings

FIG. 1 is a schematic view of a U-shaped hollow fiber membrane filtration unit;

FIG. 2 is a schematic cross-sectional view of a U-shaped hollow fiber membrane filtration apparatus;

FIG. 3 is a schematic view of a membrane scaffold;

in the figure, 1-membrane shell, 1-1-water producing port, 1-2-concentrated water port, 1-3-backwashing discharge port, 2-upper end plate, 3-central pipe, 3-1-water inlet, 3-2-first water distribution hole, 4-membrane supporting frame, 4-1-membrane fixing hole, 4-2 second water distribution hole, 4-3-supporting rod, 5-hollow fiber membrane and 6-sewage diversion trench.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. The embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work, belong to the protection scope of the present invention.

The present invention will be described in detail by way of examples with reference to the accompanying drawings.

Example (b): referring to fig. 1 to 3, the U-shaped hollow fiber membrane filtration device is composed of a membrane housing 1, an upper end plate 2 disposed in the membrane housing 1, a central tube 3, a plurality of membrane support frames 4, and a U-shaped hollow fiber membrane 5.

Wherein, the upper part of the membrane shell 1 is provided with a water producing port 1-1, the lower part is provided with a concentrated water port 1-2 and a backwashing discharge port 1-3, an upper end plate 2 is arranged at the upper part of the membrane shell 1 by pouring epoxy resin, the upper end of a central tube 3 is provided with a water inlet 3-1, the central tube 3 passes through the upper end plate 2, a plurality of first water distribution holes 3-2 are arranged on a tube body, a plurality of membrane supporting frames 4 are arranged on the membrane shell, the number of the membrane supporting frames 4 is usually 3-5, a membrane fixing hole 4-1 for limiting a hollow fiber membrane 5 and a plurality of second water distribution holes 4-2 are arranged on the membrane supporting frame 4, wherein, on a single membrane support frame 4, the number of the second water distribution holes 4-2 and the number of the second water distribution holes 4-2 with the opening direction pointing to the membrane shell 1 are increased from top to bottom.

The lower part of the membrane shell 1 also comprises a sewage diversion trench which is used for collecting solid-phase substances of concentrated water in the filtering process and discharging the solid-phase substances out of the membrane shell 1.

During filtering, raw water flows in from a water inlet 3-1 of the central pipe 3, flows into the membrane shell 1 through the first water distribution holes 3-2 and the second water distribution holes 4-3, is filtered by the hollow fiber membrane 5, and then is produced through a water producing port 1-1, and concentrated water is discharged from a concentrated water port 1-2;

during backwashing, backwashing water enters from the end part of the hollow fiber membrane 5 above the upper end plate 2 for backwashing, meanwhile, compressed air is introduced into the central pipe 3 and performs backwashing aeration through the first water distribution holes 3-2 and the second water distribution holes 4-3 to wash dirt adhered to the surface of the hollow fiber membrane 5.

Claims

A U-shaped hollow fiber membrane filtration device, comprising:

the membrane comprises a membrane shell (1), wherein a water producing port (1-1), a concentrated water port (1-2) and a backwashing discharge port (1-3) are arranged on the membrane shell (1);

an upper end plate (2) disposed in an upper region within the membrane shell (1);

the central pipe (3) is arranged in the membrane shell (1) and penetrates through the upper end plate (2), a water inlet (3-1) is formed in the upper end of the central pipe (3), and first water distribution holes (3-2) are formed in the pipe wall;

the membrane supporting frames (4) are arranged at the position, below the upper end plate (2), of the central pipe (3) at intervals, the membrane supporting frames (4) are communicated with the central pipe (3), membrane fixing holes (4-1) and second water distribution holes (4-2) are formed in the membrane supporting frames (4), and part of opening directions of the second water distribution holes (4-2) point to the upper end of the membrane shell (1);

and the two ends of the hollow fiber membrane (5) are fixedly connected to the upper end plate (2), the two ends of the hollow fiber membrane are communicated with the area above the upper end plate (2), and a membrane tube of the hollow fiber membrane (5) penetrates through the membrane fixing hole (4-1) and is limited in the membrane shell (1).
2. The U-shaped hollow fiber membrane filtration device according to claim 1, wherein: the water producing port (1-1) is arranged on the outer wall of the membrane shell (1), and the outer wall is positioned on the upper end plate (2).
3. The U-shaped hollow fiber membrane filtration device according to claim 1, wherein: the concentrated water gap (1-2) is arranged on the outer wall of the membrane shell (1), and the outer wall is positioned below the hollow fiber membrane (5).
4. The U-shaped hollow fiber membrane filtration device according to claim 1, wherein: the backwashing discharge port (1-3) is arranged at the bottom end of the membrane shell (1).
5. The U-shaped hollow fiber membrane filtration device according to claim 1, wherein: the upper end plate (2) is an integrated end plate formed by pouring epoxy resin.
6. The U-shaped hollow fiber membrane filtration device according to claim 1, wherein: the lower end of the central tube (3) is closed.
7. The U-shaped hollow fiber membrane filtration device according to claim 1, wherein: the membrane support frame (4) is composed of a plurality of support rods (4-3) extending outwards, and the membrane fixing holes (4-1) and the second water distribution holes (4-2) are arranged on the support rods (4-3).
8. The U-shaped hollow fiber membrane filtration device according to claim 7, wherein: the number of the second water distribution holes (4-2) on the membrane support frame (4) is gradually increased from top to bottom.
9. The U-shaped hollow fiber membrane filtration device according to claim 7 or 8, wherein: according to the sequence from top to bottom, the number of the second water distribution holes (4-2) pointing to the lower end of the membrane shell (1) in the opening direction of the membrane support frame (4) is gradually increased.
10. The U-shaped hollow fiber membrane filtration device according to claim 1, wherein: in membrane shell (1), the below of hollow fiber membrane (5) is provided with a filth guiding gutter (6), filth guiding gutter (6) are for leaking hopper-shaped, and its bore is from last to dwindling gradually down.