CN211988047U

CN211988047U - Soft external compression type hollow fiber curtain type diaphragm that hangs

Info

Publication number: CN211988047U
Application number: CN202020552452.1U
Authority: CN
Inventors: 魏星光; 侯婷; 郭守君; 麻丽峰
Original assignee: Suzhou Fumiao Membrane Technology Co ltd
Current assignee: Suzhou Fumiao Membrane Technology Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-11-24
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses a soft external pressure type hollow fiber curtain type diaphragm that hangs, locate on the support, the diaphragm is including locating the suspension rod on the support, one end fixed connection hangs the cable on the suspension rod, many bend and after the bend is tied up the fixed hollow fiber membrane silk of hanging on the suspension cable other end, locate on the support and have the membrane pipe of inlet outlet, the membrane pipe is located the suspension rod below, the both sides bottom that the hollow fiber membrane silk hangs down all sets firmly on the membrane pipe through the adhesive, the both sides bottom that the hollow fiber membrane silk hangs down all has the opening with the membrane pipe intercommunication; the suspension cable has many and arrange along the length extending direction of suspension rod, and the length extending direction of suspension rod is arranged along to the multibeam hollow fiber membrane silk and is formed the filtering surface. The utility model relates to a soft-suspension external-pressure hollow fiber curtain type diaphragm, which reduces the dirt blockage at the upper end of the diaphragm, is beneficial to the permeation and the shaking of air bubbles, and improves the anti-pollution capacity of the diaphragm and the water production quality of membrane filaments; the membrane fiber bundle is more flexible to shake, and the aeration effect is better.

Description

Soft external compression type hollow fiber curtain type diaphragm that hangs

Technical Field

The utility model relates to a liquid separation membrane technical field, in particular to soft external pressure type hollow fiber curtain formula diaphragm that hangs.

Background

Currently, the membrane technologies that have matured or are under development include: microfiltration, ultrafiltration, nanofiltration, reverse osmosis, dialysis, pervaporation and the like. The membrane separation technology has the characteristics of high efficiency, energy conservation, environmental protection, molecular filtration, simple operation process, easy control and the like. Has obvious advantages in the aspects of biological products, drinking water purification, seawater desalination, municipal sewage treatment, industrial wastewater treatment and the like.

Membrane Bioreactor (MBR) is a technology that combines membrane separation technology with biological sewage treatment technology to form a new and efficient sewage treatment system. The surface of the hollow fiber membrane is provided with a micron-sized pore structure, most of the hollow fiber membranes are required to be made into curtain-shaped (curtain-type membrane) in engineering application, and the hollow fiber membranes are widely applied to the field of municipal sewage treatment. The external pressure type system has the advantages of few sanitary dead angles, difficult blockage of membrane threads, thorough washing and back washing, difficult bacteria breeding, difficult residual harmful substances and the like. Various types of curtain membrane modules are available on the market, wherein hollow fiber membrane filaments are assembled into a membrane box or a membrane module in a plurality of sheets or bundles. The curtain type membrane is generally adhered to the water collecting pipe by membrane wires in the assembling process, the hard glue is close to the outlet of the water collecting pipe at the lower part, and the soft glue is arranged at the upper part to play a role in protecting the root parts of the membrane wires in the operation process. In the prior art, a plurality of hollow fiber membrane filaments with the same length are generally hung on a head tooling frame, redundant membrane filaments are cut off, the membrane filaments are placed into an MBR water collecting pipe, a packaging material, hard glue and soft glue are sequentially added, and the other end of the membrane filaments is packaged by the same method after the glue is completely cured.

In summary, the conventional hollow fiber curtain type membrane structure has the following problems: 1. after glue injection is carried out on membrane filaments at two ends of the water collecting pipe, the membrane filaments need to be cut to enable holes at two ends of the membrane filaments to be formed, so that the membrane filaments are low in utilization rate and wasted. 2. In the glue injection process, glue injection needs to be carried out on two ends, so that the surface of the membrane wire is easy to lose while the adhesive is wasted, and the quality problem is caused. 3. The manufacturing period is long, the glue filling speed is slow, and the labor cost is increased. 4. The upper end of the membrane curtain is easy to form bird nest pollution blockage, which is not beneficial to the permeation and shaking of bubbles to remove pollutants.

Disclosure of Invention

The utility model aims at providing a soft external pressure type hollow fiber curtain formula diaphragm that hangs reduces the dirt of diaphragm upper end and blocks up, is favorable to the infiltration and the shake of bubble, improves the antipollution ability of diaphragm and the water quality of producing of diaphragm silk.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a soft suspension external pressure type hollow fiber curtain type diaphragm is arranged on a support and comprises a suspension rod arranged on the support, a suspension rope with one end fixedly connected to the suspension rod, a plurality of hollow fiber membrane wires which are bent and fixed at the bent position after being bundled and hung on the other end of the suspension rope, and a membrane pipe which is arranged on the support and is provided with a water inlet and a water outlet, wherein the membrane pipe is positioned below the suspension rod, the bottom ends of two vertical sides of the hollow fiber membrane wires are fixedly arranged on the membrane pipe through an adhesive, and the bottom ends of two vertical sides of the hollow fiber membrane wires are provided with openings communicated with the membrane pipe; the suspension cables are arranged along the length extension direction of the suspension rods, and a plurality of hollow fiber membrane wires are arranged along the length extension direction of the suspension rods to form a filtering surface.

Preferably, the membrane comprises a binding tape for binding a plurality of the hollow fiber membrane filaments, and the binding tape is fixedly connected to the other end of the suspension cord.

More preferably, a plurality of hollow fiber membrane filaments bundled by each band are arranged along the length extension direction of the hanging rod.

Preferably, the hollow fiber membrane filaments are inner-lining membrane filaments with reinforcing fiber tubes inside or homogeneous membrane filaments without reinforcing fiber tubes inside.

Preferably, the membrane tube is parallel to and directly below the hanger bar.

Preferably, the bottom ends of the two sides of the hollow fiber membrane filament are equal in height.

Preferably, the hollow fiber membrane filaments have an outer diameter of between 1 and 3mm, an inner diameter of between 0.5 and 2.5mm, and a filtration pore size of between 0.05 and 0.2 μm.

Preferably, the apparent number of the hollow fiber membrane filaments is 1600-2500, and the number of the hollow fiber membrane filaments in each bundle is 30-50.

Preferably, the length of the hollow fiber membrane filaments between the hanger bar and the membrane tube is between 1500-2200 mm.

Preferably, the suspension cords are elastic cords having a length of between 50 and 100 mm.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model relates to a soft external pressure type hollow fiber curtain formula diaphragm that hangs bends the back-fixing on hanging the cable with membrane silk from the middle part, and the both sides bottom of hanging down then passes through the adhesive to be fixed in the membrane pipe. The membrane filaments are suspended by the suspension ropes, so that the membrane filament bundle can shake more flexibly and the aeration effect is better; the aeration effect is improved, meanwhile, the membrane filaments are favorably subjected to chemical cleaning, the service life of the membrane filaments is prolonged, and meanwhile, the pollution resistance of the membrane curtain and the water production quality of the membrane filaments can be improved.

The structure can improve the utilization rate of the membrane yarn, reduce the cost and reduce one cutting procedure so that the process operation is simple; on the other hand, the use of an adhesive can be reduced, the production efficiency is improved, the defects generated on the surface of the membrane yarn due to manual operation are reduced, and the performance of the hollow fiber membrane yarn is improved.

The utility model relates to a soft external pressure type hollow fiber curtain formula membrane that hangs can be used for fields such as purification, sea water desalination, plasma separation, protein absorption of industrial sewage treatment, organic matter contaminated water.

Drawings

FIG. 1 is a schematic structural diagram of the device of the present invention;

FIG. 2 is a schematic structural view of a membrane tube.

Wherein: 1. a support; 2. a suspension rod; 3. a suspension cable; 4. hollow fiber membrane filaments; 5. a membrane tube; 6. a water inlet and outlet; 7. and (6) binding the belt.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1-2, the soft suspended external pressure type hollow fiber curtain type membrane is provided on a support 1. The membrane comprises a suspension rod 2 arranged on a support 1, a suspension cable 3 with the upper end fixedly connected to the suspension rod 2, a plurality of hollow fiber membrane wires 4 which are bent and fixed at the bent position after being bundled and hung at the lower end of the suspension cable 3, and a membrane tube 5 which is arranged on the support 1 and is provided with a water inlet and a water outlet 6. In this embodiment, the suspension cord 3 has a plurality of strands arranged at intervals along the longitudinal extension direction of the suspension bar 2, and the plurality of hollow fiber membrane filaments 4 are arranged along the longitudinal extension direction of the suspension bar 2 to form a filtration surface. The membrane tube 5 is used for collecting the produced water of the membrane filaments or introducing backwash water.

The membrane tube 5 is positioned below the suspension rod 2, and the bottom ends of the two suspended sides of the hollow fiber membrane filaments 4 are fixedly arranged on the membrane tube 5 in a casting mode through an adhesive, namely the hollow fiber membrane filaments 4 are fixedly arranged between the suspension cable 3 and the membrane tube 5. The two side bottom ends from which the hollow fiber membrane filaments 4 hang down each have an opening communicating with the membrane tube 5, which is obtained by cutting the membrane filaments.

In the existing hollow fiber curtain type diaphragm structure, both ends of the diaphragm filament need to be injected with glue for casting, and the two-time processing has the disadvantages of long processing time, more adhesive and easy damage to the surface of the diaphragm filament, thereby causing quality problems; meanwhile, the residual plastic package layer at the upper end of the membrane wire is easy to form bird nest pollution blockage, and is not beneficial to the permeation and shaking of bubbles to remove pollutants.

And in the structure of the utility model, the membrane silk is fixed to hang on suspension cable 3 on its upper end after bending, and it is fixed to need not the injecting glue, and it is stifled to reduce the dirt of membrane upper end, is favorable to the infiltration and the shake of bubble, improves the antipollution ability of membrane and the water quality of producing of membrane silk. Meanwhile, the structure can improve the utilization rate of the membrane yarn, reduce the cost and reduce one cutting procedure so that the process operation is simple; the use of adhesive can be reduced, the production efficiency is improved, the defects generated on the surface of the membrane yarn due to manual operation are reduced, and the performance of the hollow fiber membrane yarn 4 is improved. The membrane filaments are suspended through the suspension ropes 3, so that the membrane filament bundle can shake more flexibly and the aeration effect is better; the aeration effect is improved, meanwhile, the membrane filaments are favorably subjected to chemical cleaning, the service life of the membrane filaments is prolonged, and meanwhile, the pollution resistance of the membrane curtain and the water production quality of the membrane filaments can be improved.

In the embodiment, the membrane comprises a binding belt 7 for binding a plurality of hollow fiber membrane filaments 4, the binding belt 7 is fixedly connected to the lower end of the suspension rope 3, and the binding belt 7 is tightly bound at the bending part of the membrane filament bundle. The hollow fiber membrane filaments 4 bundled by each band 7 are arranged along the length extension direction of the suspension bar 2. In other embodiments, the bundle of membranes may be obtained by gluing at the folds.

The hollow fiber membrane yarn 4 is an inner liner yarn having a reinforcing fiber tube therein or a homogeneous yarn having no reinforcing fiber tube therein. The method is specifically selected according to actual needs.

In the present embodiment, the membrane tube 5 is parallel to the hanger bar 2 and directly below the hanger bar 2; the bottom ends of the two sides of the hollow fiber membrane wire 4 are equal in height.

In the embodiment, the apparent number of the hollow fiber membrane filaments 4 is 1600-2500, and the number of the hollow fiber membrane filaments 4 in each bundle corresponding to each suspension cord 3 is 30-50. The apparent number is referred to herein as the surface observed number, and since the hollow fiber membrane filaments 4 are folded and suspended, the actual number is only half of the apparent number.

The length of the hollow fiber membrane thread 4 between the hanger bar 2 and the membrane tube 5 (about half the length of the whole hollow fiber membrane thread 4) is between 1500-2200 mm.

The hollow fiber membrane filaments 4 have an outer diameter of 1-3mm, an inner diameter of 0.5-2.5mm, and a filtration pore diameter of 0.05-0.2 μm.

The suspension cable 3 is an elastic rope with a certain tensile strength and the length of the suspension cable is 50-100 mm. Through the arrangement, the flexibility of the membrane filament bundle shaking is further improved, and the aeration effect is improved.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a soft external pressure type hollow fiber curtain formula diaphragm that hangs, locates on the support, its characterized in that: the membrane comprises a suspension rod arranged on the support, a suspension cable with one end fixedly connected to the suspension rod, a plurality of hollow fiber membrane wires which are bent and fixed at the bent position after binding and are hung on the other end of the suspension cable, and a membrane tube which is arranged on the support and is provided with a water inlet and a water outlet, wherein the membrane tube is positioned below the suspension rod, the bottom ends of two sides of the hollow fiber membrane wires which hang down are fixedly arranged on the membrane tube through an adhesive, and the bottom ends of two sides of the hollow fiber membrane wires which hang down are provided with openings communicated with the membrane tube; the suspension cables are arranged along the length extension direction of the suspension rods, and a plurality of hollow fiber membrane wires are arranged along the length extension direction of the suspension rods to form a filtering surface.

2. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 1, wherein: the diaphragm is including being used for binding many the ribbon of hollow fiber membrane silk, ribbon fixed connection is in hang the other end of cable.

3. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 2, wherein: and a plurality of hollow fiber membrane wires bundled by each binding belt are arranged along the length extension direction of the hanging rod.

4. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 1, wherein: the hollow fiber membrane filaments are lining membrane filaments with reinforced fiber tubes inside or homogeneous membrane filaments without the reinforced fiber tubes inside.

5. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 1, wherein: the membrane tube is parallel to the suspension rod and is positioned right below the suspension rod.

6. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 1, wherein: the bottom ends of the two sides of the hollow fiber membrane filament are equal in height.

7. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 1, wherein: the outer diameter of the hollow fiber membrane wire is between 1 mm and 3mm, the inner diameter of the hollow fiber membrane wire is between 0.5 mm and 2.5mm, and the filtering pore diameter is between 0.05 μm and 0.2 μm.

8. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 1, wherein: the apparent number of the hollow fiber membrane filaments is 1600-2500, and the number of the hollow fiber membrane filaments in each bundle is 30-50.

9. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 1, wherein: the length of the hollow fiber membrane filaments between the suspension rod and the membrane tube is between 1500 and 2200 mm.

10. The soft hanging external pressure type hollow fiber curtain type membrane as claimed in claim 1, wherein: the suspension cable is an elastic rope, and the length of the suspension cable is 50-100 mm.