CN112169597A

CN112169597A - Curtain type membrane assembly in regular arrangement, preparation method thereof and automatic filling device used in preparation method

Info

Publication number: CN112169597A
Application number: CN202010996914.3A
Authority: CN
Inventors: 徐山田; 沈红梅; 李芸芳; 徐锦锦; 董文龙; 张星星
Original assignee: Zhejiang Changxing Qiushi Membrane Technology Co ltd
Current assignee: Zhejiang Changxing Qiushi Membrane Technology Co ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-01-05

Abstract

The invention relates to the technical field of membrane separation water treatment, and particularly relates to and discloses a curtain type membrane assembly in regular arrangement. The invention also discloses a preparation method of the curtain type membrane assembly, which comprises the steps of membrane clamping, membrane positioning, membrane glue filling and membrane through hole. The invention also discloses an automatic perfusion device for realizing the method. The glue disclosed by the invention can rapidly flow and adhere to membrane filaments without blocking a water outlet of the hollow fiber membrane, greatly simplifies the glue filling and packaging process, improves the integrity and pollution resistance of the membrane component, and has the advantages of simple process, high automation degree, high production efficiency, good product quality and low production cost.

Description

Curtain type membrane assembly in regular arrangement, preparation method thereof and automatic filling device used in preparation method

Technical Field

The invention relates to the technical field of membrane separation water treatment, in particular to a curtain type membrane assembly in regular arrangement, a preparation method and an automatic filling device for realizing the preparation method.

Background

A hollow fiber curtain type membrane bioreactor is a novel water treatment technology combining a hollow fiber membrane separation unit and a biological treatment unit, a hollow fiber curtain type membrane component is used for replacing a secondary sedimentation tank, high activated sludge concentration is kept in the biochemical reactor, the occupied area of a sewage treatment facility is reduced, and the sludge amount is reduced by keeping low sludge load. Compared with the traditional biochemical water treatment technology, the device has the characteristics of high treatment efficiency, good effluent quality, compact equipment, small occupied area, easy realization of automatic control, simple operation management and the like. The method is widely applied to sewage treatment in the fields of municipal administration, electric power, steel, petrifaction, textile, food and the like.

During the manufacture of hollow fiber curtain membrane modules, a large number of hollow fiber membrane filament ends must be secured in the header and potted into an assembly such that the outer surface of the membrane is completely sealed from the exterior of the header, but the hollow interior bore of the membrane is open to the interior chamber of the header. And then, the water collecting pipe is connected with a pump through a pipeline, and transmembrane pressure difference is formed through negative pressure suction or a pressure source, so that membrane separation is realized.

The existing hollow fiber curtain type membrane is prepared mainly by naturally dispersing membrane filaments bundled into bundles, finishing the membrane filaments into sheets by using a clamp, and finally encapsulating the membrane filaments by glue. The packaging process has multiple procedures, including primary packaging, head cutting, bonding of the packaging box and the water collecting box, secondary packaging and soft glue adding. The use of the enclosure reduces the filling area of the hollow fiber membranes in the water supply pipe. In addition, the encapsulation mode has higher requirement on the fluidity of the glue. The bundled membrane filaments are easy to have the phenomena of uneven glue permeation and insufficient flow in glue pouring and packaging. The disordered and scattered film bundles can block the flowing of the glue, the injection speed of the glue is low, and the production efficiency is low. Finally, when the membrane wires are clamped into the sheets and encapsulated by glue, the encapsulation mode of manually assisting the dispersion membrane wires has higher requirement on the manual consistency, and the quality is difficult to ensure.

The existing curtain film and the preparation method thereof have the following defects:

1. the membrane filaments are arranged in disorder, and are easy to accumulate mud in the actual use process, so that the pollution resistance is low;

2. the packaging process of the membrane yarn is more, the production efficiency is low, and the product quality is unstable;

3. after the membrane wires are encapsulated by glue, the phenomena of uneven and not-in-place flowing of the glue are easy to occur, and the production defective rate is high;

4. the labor cost is high, and the production quality can not be ensured.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a curtain type membrane which is regularly arranged, can make glue quickly flow and adhere to membrane filaments when in encapsulation and encapsulation, does not block a water outlet of a hollow fiber membrane, greatly simplifies the encapsulation and encapsulation process, improves the integrity and pollution resistance of a membrane component, and has high production efficiency, a preparation method thereof and an automatic perfusion device for realizing the preparation method.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a curtain formula membrane module of regular arrangement, includes collector pipe, a plurality of hollow fiber diaphragm, the hollow fiber diaphragm is regular through flexible glue layer and is arranged, still includes the potting layer, the potting layer is with the embedment of a plurality of hollow fiber diaphragms with whole or partial soft glue layer in the collector pipe, and hollow fiber diaphragm delivery port end is located outside soft glue layer and the embedment layer. The membrane filaments are regularly arranged, sludge is not easy to accumulate in the using process, and the pollution resistance is strong. The soft adhesive layer can enable the membrane filaments to move in the using process, so that the membrane filaments can better bear impact force, and the membrane filaments cannot break due to the impact force.

Preferably, the potting layer is divided into an upper potting layer and a lower potting layer, wherein the upper potting layer is far away from the water outlet end of the hollow fiber membrane, and the hardness of the upper potting layer is less than 60 Shore A. The soft rubber layer is small in height, the hollow fiber membrane material is filled and sealed in two layers under the condition that brittle failure easily occurs, the hardness requirement of the lower-layer filling and sealing layer is guaranteed, the hardness of the upper filling and sealing layer is small, membrane wires can move in the using process, impact force is better borne, and the membrane wires cannot break due to the impact force.

Preferably, the height of the encapsulating layer is 10-80 mm, the depth of the soft rubber layer embedded into the encapsulating layer is 3-20 mm, the length of the hollow fiber membrane outside the encapsulating layer 4 is 3-20 mm, and the distance from the water outlet of the hollow fiber membrane to the bottom of the water collecting pipe is 2-15 mm.

Preferably, the encapsulating layer material is one or two of urea-formaldehyde resin, polyvinyl acetate resin, polyacrylic resin, polyurethane, epoxy resin or organic silicon.

Preferably, the hollow fiber membrane is formed by regularly arranging 10-2000 hollow fiber membranes with the length of 0.1-3 m, the distance between every two adjacent membrane filaments is 0.1-10 mm, the number of stacked hollow fiber membranes is 1-60 layers, the height of a soft rubber layer is 1-50 mm, the thickness of the soft rubber layer is 0.2-5mm, and the material of the soft rubber layer is one of ethylene-vinyl acetate copolymer, styrene block elastomer, polyolefin, polyamide and polyester.

Preferably, the flexible glue pipe further comprises a clamping block, the clamping block is clamped outside the soft glue layer, and the clamping block is encapsulated in the water collecting pipe by the encapsulating layer or is independent of the encapsulating layer. Under the less condition of flexible glue layer height, the clamp splice can the embedment in the collector pipe, guarantees the location that lasts, and when flexible glue layer height was higher, the clamp splice can be independent of the embedment layer, and the preparation is removable after accomplishing and is recycled.

A preparation method of curtain type membrane components in regular arrangement comprises the following steps:

1) clamping the membrane: two ends of a plurality of hollow fiber membranes are respectively stacked and orderly to form blocks and are clamped by a clamping block, the hollow fiber membranes are regularly arranged by a soft rubber layer gel, and water outlets of the hollow fiber membranes are downward and are positioned outside the soft rubber layer; the relative position of the hollow fiber membrane and the water collecting pipe is ensured through the fixing clamping block.

2) Positioning the membrane: using a supporting liquid injection device to inject supporting liquid into the bottom of the water collecting pipe, standing and leveling, slowly plugging the clamped end of the hollow fiber membrane into the water collecting pipe, standing until the supporting liquid in the water collecting pipe is higher than the water outlet of the hollow fiber membrane and leveling, and realizing that the supporting liquid is immersed in the plugged holes; the use of the supporting liquid can protect the water outlet of the hollow fiber membrane from being blocked by the potting glue and ensure that the bottom of the potting glue is flush.

3) And (3) glue pouring of the membrane: injecting potting liquid at a proper potting speed by using an automatic potting device, and then standing, leveling and curing to form a potting layer; the glue can flow rapidly and adhere to all membrane filaments.

4) Diaphragm through hole: and after the encapsulation layer is solidified, the supporting liquid in the water collecting pipe flows out, so that the water outlet of the hollow fiber membrane is exposed out of the through hole.

The above steps may be performed at both ends of the hollow fiber membrane, or the hollow fiber membrane may be bent into a U shape with both ends facing downward, and the above steps may be performed at the same time.

When in encapsulation, the glue can flow rapidly and adhere to all membrane filaments without blocking the water outlet of the hollow fiber membrane, thereby greatly simplifying the encapsulation process and improving the integrity and the pollution resistance of the membrane component.

Preferably, the top of the supporting liquid in the step 2) is 0-50 mm lower than the lower part of the soft rubber layer.

Preferably, the viscosity of the supporting liquid at room temperature in the step 2) is more than 5000 mPas, and the material is one or two solutions of polyvinylpyrrolidone, sodium polyacrylate, polymethyl acrylate, methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, waterborne polyurethane, polysaccharide, polyoxyethylene and the like. Ensuring that the supporting liquid 7 does not climb along the hollow fiber membrane.

Preferably, the glue filling process in the step 3) can be twice glue filling of the upper layer and the lower layer, and the hardness of the material liquid of the upper layer glue filling is smaller than that of the material liquid of the lower layer.

An automatic perfusion device for realizing a curtain-type membrane assembly preparation method in regular arrangement comprises a first material cylinder group, a second material cylinder group and a plurality of perfusion executing mechanisms, wherein each perfusion executing mechanism comprises a first metering device, a second metering device, a mixed glue gun, a multi-point injector and a perfusion displacement device, outlets of the first metering device and the second metering device are connected to inlets of the mixed glue gun, an outlet of the mixed glue gun is connected to the multi-point injector, the perfusion displacement device is connected to the multi-point injector, and inlets of the first metering device and the second metering device are respectively connected to outlets of the first material cylinder group and the second material cylinder group.

The charging barrel is used for storing feed liquid; the metering device is used for controlling the speed and the dosage of the feed liquid injection; the glue mixing gun is used for controlling the opening and closing of the filling actuating mechanism and uniformly mixing the multi-component raw materials provided by different metering devices; the multipoint injector is used for dispersing the feed liquid to different point positions, and the filling displacement device can move the multipoint injector to a preset station for filling. Can be used for injecting supporting liquid and potting liquid.

Preferably, the first and second material cylinder groups have 1-2 material cylinders, the material cylinders of the first material cylinder group are connected with the first metering device, and the material cylinders of the second material cylinder group are connected with the second metering device. Set up a plurality of feed cylinders, can switch the feed cylinder when needing, guarantee not to stop the material.

Preferably, the number of the perfusion actuators is 1-10. Can cope with the situation that a plurality of simultaneous infusions are needed.

Preferably, the number of the point positions of the multi-point injector can be 2-10, each point position is provided with a separate adjustable flow channel, different liquid material amount distribution is realized by adjusting the size of the flow channel, and the first metering device and the second metering device can output liquid in multiple sections at different speeds. Can be respectively adjusted according to requirements, realizes self-leveling of liquid, and is rapid and uniform.

Preferably, when the supporting liquid is poured, the first material cylinder group and the second material cylinder group can be respectively filled with the supporting liquid with different viscosities; when the potting liquid is poured, the first material cylinder group and the second material cylinder group can be respectively poured with different components of the potting liquid. The used supporting fluid can be continuously returned to the charging barrel to form the supporting fluid with different viscosities for recycling. The double-material-barrel group facilitates the use of the double-component potting liquid.

According to the curtain type membrane assembly with regular arrangement, the preparation method and the automatic filling device for realizing the preparation method, after the hollow fiber membranes with the soft rubber layers are regularly stacked, the supporting liquid is leveled to temporarily block the water outlet, the glue is filled, and the water outlet is recovered, so that the glue can quickly flow and adhere to membrane filaments without blocking the water outlet of the hollow fiber membrane, the glue filling and packaging process is greatly simplified, and the integrity and the pollution resistance of the membrane assembly are improved. The automatic production line has the advantages of simple process, high automation degree, capability of effectively improving the production efficiency, product quality improvement and production cost reduction.

Drawings

Fig. 1 is a schematic structural diagram of a curtain membrane module in regular arrangement according to example 1 of the present invention.

Fig. 2 is a schematic structural view of a hollow fiber membrane with a soft rubber layer in example 1 of the present invention.

FIG. 3 is a schematic diagram of the preparation of a curtain membrane module in regular arrangement in example 1 of the present invention.

Fig. 4 is a schematic structural diagram of an automatic perfusion apparatus according to embodiment 1 of the present invention.

FIG. 5 is a schematic diagram of the preparation of a curtain membrane module in regular arrangement in example 2 of the present invention.

FIG. 6 is a schematic diagram of the preparation of a curtain membrane module in regular arrangement in example 3 of the present invention.

In the figure: 1. a water collection pipe; 2. a hollow fiber membrane; 3. a soft adhesive layer; 4. a potting layer; 5. A clamping block; 6. an automatic perfusion device; 7. a supporting liquid; 9. A first material cylinder group; 10. a second material cylinder group; 11. a perfusion actuator; 12. a first metering device; 13. a second metering device; 14. mixing a glue gun; 15. a multi-point syringe; 16. a perfusion displacement device; 17. a charging barrel; 41. a lower potting layer; 42. and (6) coating a sealing layer.

Detailed Description

The invention will be further described with reference to fig. 1-6 and the detailed description.

Example 1

A curtain type membrane assembly which is regularly arranged is shown in an attached drawing 1 and comprises a water collecting pipe 1 and a plurality of hollow fiber membranes 2, the hollow fiber membranes 2 are regularly arranged through soft rubber layers 3, the curtain type membrane assembly further comprises a potting layer 4, the potting layer 4 is used for potting the hollow fiber membranes 2 with the soft rubber layers 3, and the water outlet ends of the hollow fiber membranes 2 are located outside the soft rubber layers 3 and the potting layer 4.

The hollow fiber membrane 2 is prepared from PVDF hollow fiber homogeneous membrane filaments prepared by a thermal induced phase method, each hollow fiber membrane 2 is formed by 200 hollow fiber membrane filaments with the diameter of 1.3mm and the length of 1m in a regular arrangement mode, the distance between every two adjacent membrane filaments is 0.7mm, the number of stacked layers of the hollow fiber membrane 2 is 12, the height of the soft rubber layer 3 is 40mm, the thickness of the soft rubber layer is 2.7mm, and the soft rubber layer 3 is made of ethylene-vinyl acetate copolymer.

The height of the encapsulating layer 4 is 45mm, the depth of the soft rubber layer 3 embedded into the encapsulating layer 4 is 15mm, the length of the hollow fiber membrane 2 outside the encapsulating layer 4 is 15mm, and the distance between the water outlet of the hollow fiber membrane 2 and the bottom of the water collecting pipe 1 is 10 mm.

The material of the encapsulating layer 4 is two-component epoxy resin which comprises two components of an epoxy resin main agent and an epoxy resin curing agent.

1) clamping the membrane: respectively stacking and neatly arranging two ends of a plurality of hollow fiber membranes 2 into blocks and clamping the blocks through clamping blocks 5, wherein the hollow fiber membranes 2 are arranged regularly through gels of a soft adhesive layer 3, a water outlet of each hollow fiber membrane 2 faces downwards and is positioned outside the soft adhesive layer 3, as shown in the attached drawing 3, the clamping blocks 5 are positioned outside a water collecting pipe 1, the hollow fiber membranes 2 are bent into a U shape, the two ends of each hollow fiber membrane face downwards respectively, and the following steps are simultaneously carried out;

2) positioning the membrane: injecting a supporting liquid 7 into the bottom of the water collecting pipe 1 by using an automatic filling device 6, standing and leveling, suspending the supporting liquid 7 by 25mm after leveling, slowly plugging the end head of the clamped hollow fiber membrane 2 into the water collecting pipe 1, standing until the supporting liquid 7 in the water collecting pipe 1 is higher than the water outlet of the hollow fiber membrane 2 and leveling, so that the supporting liquid 7 is immersed and plugged, the hollow fiber membrane 2 extends into the supporting liquid by 15mm, and the distance between the water outlet and the bottom of the water collecting pipe 1 is 10 mm;

3) and (3) glue pouring of the membrane: injecting the encapsulating liquid into another automatic filling device 6 at a proper encapsulating speed, standing, leveling and curing to form an encapsulating layer 4;

the multi-point injector 15 moves to the upper side of the water collecting pipe 1 along with the glue injection executing mechanism 16, the number of the 15 points of the multi-point injector in the automatic filling device 6 is 5, the epoxy resin is injected into the first metering device 12 and the second metering device 13 at a two-section filling and sealing speed, the first-section glue injection speed is high, the sinking height of the supporting liquid in the filling and sealing process is guaranteed to be smaller than 15mm, and the epoxy resin cannot overflow out of the water collecting pipe 1 due to the low two-section filling and sealing speed. Then standing in a constant temperature and humidity chamber, leveling and curing to form an encapsulation layer 4, wherein the height of the encapsulation layer 4 is 45mm, the hollow fiber membrane soft rubber layer 3 is embedded into the encapsulation layer 4 for 15mm, the top of the supporting liquid 7 is 30mm lower than the lower part of the soft rubber layer 3, the top of the encapsulation layer 4 is lower than the bottom of the clamping block 5, and after the whole step is completed, the clamping block 5 can be loosened and recycled;

4) diaphragm through hole: and after the encapsulation layer 4 is solidified, the supporting liquid 7 in the water collecting pipe 1 flows out, so that the water outlet of the hollow fiber membrane 2 is exposed out of the through hole.

The viscosity of the supporting liquid 7 at room temperature in the step 2) is more than 5000 mPa & s, and polyvinylpyrrolidone is selected.

As shown in fig. 4, an automatic filling and sealing device 6 for realizing a curtain membrane assembly preparation method for regular arrangement comprises a first material cylinder group 9, a second material cylinder group 10 and two filling execution mechanisms 11, wherein each filling execution mechanism 11 comprises a first metering device 12, a second metering device 13, a mixing glue gun 14, a multi-point injector 15 and a filling displacement device 16, the outlets of the first metering device 12 and the second metering device 13 are connected to the inlet of the mixing glue gun 14, the outlet of the mixing glue gun 14 is connected to the multi-point injector 15, the filling displacement device 16 is connected to the multi-point injector 15, and the inlets of the first metering device 12 and the second metering device 13 are respectively connected to the outlets of the first material cylinder group 9 and the second material cylinder group 10.

The first material cylinder group 9 and the second material cylinder group 10 are respectively provided with two material cylinders 17, the material cylinders 17 of the first material cylinder group 9 are connected with the first metering device 12, and the material cylinders 17 of the second material cylinder group 10 are connected with the second metering device 13.

The number of the points of the multi-point injector 15 can be divided into 5, each point is provided with a separate adjustable flow channel, different liquid material amount distribution is realized by adjusting the size of the flow channel, and the first metering device 12 and the second metering device 13 can output liquid in multiple sections at different speeds.

When the supporting liquid 7 is poured, the supporting liquid 7 with different viscosities is respectively poured into the first material cylinder group 9 and the second material cylinder group 10, wherein part of the supporting liquid 7 is the supporting liquid 7 used in the step 4) for recycling; when the potting liquid is poured, the first material cylinder group 9 and the second material cylinder group 10 are respectively filled with two components of epoxy resin.

Example 2

The curtain-type membrane assembly in regular arrangement, the preparation method and other parts of the automatic filling device for realizing the preparation method are shown as an example 1, and the differences are that:

the utility model provides a curtain formula membrane module of regularly arranging, polyvinylidene fluoride (PVDF) hollow fiber membrane silk preparation that hollow fiber diaphragm 2 chooseed the preparation of coating method for use, every hollow fiber diaphragm 2 is by 43, the diameter is 2mm, the long hollow fiber membrane silk of 2m is regularly arranged and is formed, two adjacent membrane silk interval 1mm, hollow fiber diaphragm 2 piles up the number of piles and is 20 layers, 3 high 15mm in flexible glue layer, thickness is 3.5mm, 3 materials on the flexible glue layer select for use styrene block elastomer.

As shown in fig. 5, the potting layer 4 is divided into an upper potting layer 42 and a lower potting layer 41, wherein the upper potting layer 42 is far away from the water outlet end of the hollow fiber membrane 2, and the hardness of the upper potting layer 42 is about 30 to 40 shore a. The lower potting layer 41 is made of two-component polyurethane, and the upper potting layer 42 is made of two-component organic silicon. The hollow fiber membrane 2 with all the soft rubber layers 3 is encapsulated in the water collecting pipe 1 through the upper encapsulating layer 42 and the lower encapsulating layer 41.

The flexible glue pipe also comprises a clamping block 5, wherein the clamping block 5 is clamped outside the flexible glue layer 3 and is encapsulated in the water collecting pipe 1 by an upper encapsulating layer 42 and a lower encapsulating layer 41.

The height of the lower potting layer 41 is 30mm, the depth of the soft rubber layer 3 embedded into the lower potting layer 41 is 5mm, the height of the upper potting layer 42 is 15mm, the depth of the soft rubber layer 3 embedded into the upper potting layer 42 is 5mm, and the height of the clamp block 5 is 5 mm.

The length of the hollow fiber membrane 2 outside the lower potting layer 41 potting layer 4 is 10mm, and the distance between the water outlet of the hollow fiber membrane 2 and the bottom of the water collecting pipe 1 is 5 mm.

The difference between the preparation method of the curtain membrane assembly in regular arrangement and the embodiment 1 is that:

in the step 2), the supporting liquid 7 is sodium polyacrylate.

Step 3), filling glue into the membrane: injecting the lower-layer potting liquid polyurethane at a proper potting speed by using an automatic potting device 6, respectively injecting two components (a main agent and a curing agent) of the polyurethane into a first material cylinder group 9 and a second material cylinder group 10 of the automatic potting device 6, standing, leveling and curing to form a lower potting layer 41, then injecting organic silicon into the lower-layer potting layer by using the automatic potting device 6, standing, leveling and curing to form an upper potting layer 42, and respectively injecting two components (the main agent and the curing agent) of the organic silicon into the first material cylinder group 9 and the second material cylinder group 10 of the automatic potting device 6;

the multi-point injector 15 moves to the upper part of the water collecting pipe 1 along with the glue injection actuating mechanism 16, the number of the multi-point injector 12 in the automatic glue injection device 8 is 5, and the first metering device 12 and the second metering device 13 inject polyurethane at a fixed speed to ensure that the sinking height of the supporting liquid is less than 10mm in the encapsulating process, then standing and leveling in a constant temperature and humidity chamber and curing to form a lower encapsulation layer 41, wherein the height of the lower encapsulation layer 41 is 30mm, the hollow fiber membrane soft rubber layer 3 is embedded into the lower encapsulation layer 41 for 5mm, then injecting organic silicon at a fixed speed, the slow glue injection speed ensures that the organic silicon does not overflow out of the water collecting pipe 1, then standing, leveling and curing in a constant temperature and humidity chamber to form an upper encapsulating layer 42, wherein the height of the upper encapsulating layer 42 is 15mm, the soft rubber layer 3 is embedded into the upper encapsulating layer 42 for 5mm, the top of the supporting liquid 7 is lower than the lower part of the soft rubber layer 3 for 25mm, and the clamping block 5 is encapsulated in the water collecting pipe 1 to ensure the relative position of the diaphragm and the water collecting pipe 1.

Example 3

The curtain-type membrane assembly in regular arrangement, the preparation method, and the supporting liquid injection device and the automatic glue pouring device used for realizing the preparation method are as shown in the embodiment 1, and the differences are that:

the utility model provides a curtain formula membrane module of regular arranging, Polytetrafluoroethylene (PTFE) hollow fiber membrane silk preparation that hollow fiber diaphragm 2 chooseed to wind the package method preparation, every hollow fiber diaphragm 2 is by 100, the diameter is 2mm, the long hollow fiber membrane silk of 2.5m is regular arranges and forms, two adjacent membrane silk interval 0.5mm, hollow fiber diaphragm 2 piles up the number of piles and is 9 layers, 3 high 40mm in flexible glue layer, thickness is 2.7mm, 3 materials on flexible glue layer select for use polyethylene. As shown in fig. 6, the hollow fiber membrane 2 with the entire soft adhesive layer 3 is encapsulated in the header 1 by the encapsulating layer 4. The water collecting pipe is characterized by further comprising a clamping block 5, wherein the clamping block 5 is clamped outside the soft rubber layer 3 and is embedded in the water collecting pipe 1 through the embedding layer 4.

The height of the encapsulating layer 4 is 35mm, the depth of the soft rubber layer 3 embedded into the encapsulating layer 4 is 15mm, the length of the hollow fiber membrane 2 outside the encapsulating layer 4 is 10mm, and the distance between the water outlet of the hollow fiber membrane 2 and the bottom of the water collecting pipe 1 is 5 mm.

in the step 2), the supporting liquid 7 is hydroxypropyl methylcellulose and waterborne polyurethane.

Step 3), filling glue into the membrane: injecting the encapsulating liquid at a proper encapsulating speed by using an automatic injecting device 6, standing, leveling and curing to form an encapsulating layer 4;

the first material cylinder group 9 is injected with an epoxy resin main agent, and the second material cylinder group 10 is injected with an epoxy resin curing agent.

The multi-point injector 12 moves to the upper part of the water collecting pipe 1 along with the glue injection executing mechanism 14, the number of the 12 points of the multi-point injector in the automatic filling device 6 is 5, the first metering device 12 and the second metering device 13 are respectively filled with the epoxy resin main agent and the epoxy resin curing agent at two-section filling and sealing speeds, the first-section filling and sealing speed is high, the sinking height of the supporting liquid in the filling and sealing process is guaranteed to be smaller than 10mm, and the second-section filling and sealing speed is low, so that the epoxy resin cannot overflow out of the water collecting pipe 1. Then, standing, leveling and curing in a constant temperature and humidity chamber to form an encapsulation layer 4, wherein the height of the encapsulation layer 4 is 35mm, the hollow fiber membrane soft rubber layer 3 is embedded into the encapsulation layer 4 for 15mm, the top of the supporting liquid 7 is lower than the lower part of the soft rubber layer 3 for 10mm, and the clamping block 5 is encapsulated into the water collecting pipe 1 to ensure the relative position of the membrane and the water collecting pipe 1.

Based on the characteristic that Polytetrafluoroethylene (PTFE) hollow fiber membrane filaments are not easy to break, the upper layer of the encapsulation layer 4 does not need to have small hardness and can be encapsulated together with the lower layer with the same hardness, and all the soft rubber layers 3 are encapsulated together with the clamping blocks 5, so that the stability is kept.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the invention, and all equivalent changes and modifications made in the content of the claims should be considered as the technical scope of the invention.

Claims

1. The utility model provides a curtain formula membrane module of regular arrangement, includes collector pipe (1), a plurality of hollow fiber diaphragm (2), hollow fiber diaphragm (2) are regular through hose (3) and are arranged its characterized in that: still include encapsulating layer (4), encapsulating layer (4) are with whole or partial soft glue film (3) embedment in collector pipe (1) of a plurality of hollow fiber diaphragm (2), and hollow fiber diaphragm (2) water outlet end is located outside soft glue film (3) and encapsulating layer (4).

2. A regularly arranged curtain membrane module according to claim 1, wherein: the potting layer (4) is divided into an upper potting layer (42) and a lower potting layer (41), wherein the upper potting layer (42) is far away from the water outlet end of the hollow fiber membrane (2), and the hardness of the upper potting layer (42) is less than 60 Shore A.

3. A regularly arranged curtain membrane module according to claim 1, wherein: the height of the encapsulating layer (4) is 10-80 mm, the depth of the soft adhesive layer (3) embedded into the encapsulating layer (4) is 3-20 mm, the length of the hollow fiber membrane (2) outside the encapsulating layer (4) is 3-20 mm, and the distance between the water outlet of the hollow fiber membrane (2) and the bottom of the water collecting pipe (1) is 2-15 mm.

4. A regularly arranged curtain membrane module according to claim 1, wherein: the material of the encapsulating layer (4) is one or two of urea resin, polyvinyl acetate resin, polyacrylic resin, polyurethane, epoxy resin or organic silicon.

5. A regularly arranged curtain membrane module according to claim 1, wherein: the hollow fiber membrane (2) is formed by regularly arranging 10-2000 hollow fiber membranes with the length of 0.1-3 m, the distance between every two adjacent membrane filaments is 0.1-10 mm, the number of stacked hollow fiber membranes (2) is 1-60 layers, the height of the soft rubber layer (3) is 1-50 mm, the thickness of the soft rubber layer is 0.2-5mm, and the soft rubber layer (3) is made of one of ethylene-vinyl acetate copolymer, styrene block elastomer, polyolefin, polyamide and polyester.

6. A regularly arranged curtain membrane module according to claim 1, wherein: the water collecting pipe is characterized by further comprising a clamping block (5), wherein the clamping block (5) is clamped outside the soft rubber layer (3), and the clamping block (5) is encapsulated in the water collecting pipe (1) by the encapsulating layer (4) or is independent of the encapsulating layer (4).

7. A method for preparing a regularly arranged curtain membrane module according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:

1) clamping the membrane: two ends of a plurality of hollow fiber membranes (2) are respectively stacked and tidily formed into blocks and clamped through clamping blocks (5), the hollow fiber membranes (2) are arranged regularly through gels of the soft rubber layer (3), and water outlets of the hollow fiber membranes (2) are downward and are positioned outside the soft rubber layer (3);

2) positioning the membrane: injecting a supporting liquid (7) into the bottom of the water collecting pipe (1) by using an automatic filling device (6), standing and leveling, slowly plugging the end head of the clamped hollow fiber membrane (2) into the water collecting pipe (1), standing until the supporting liquid (7) in the water collecting pipe (1) is higher than the water outlet of the hollow fiber membrane (2), leveling and immersing and plugging the supporting liquid (7);

3) and (3) glue pouring of the membrane: injecting the encapsulating liquid at a proper encapsulating speed by using another automatic encapsulating device (6), and then standing, leveling and curing to form an encapsulating layer (4);

4) diaphragm through hole: after the potting layer (4) is solidified, the supporting liquid (7) in the water collecting pipe (1) flows out, so that the water outlet of the hollow fiber membrane (2) is exposed out of the through hole.

8. The method for preparing regularly arranged curtain membrane modules according to claim 7, characterized in that: in the step 2), the top of the supporting liquid (7) is 0-50 mm lower than the lower part of the soft rubber layer (3).

9. The method for preparing regularly arranged curtain membrane modules according to claim 7, characterized in that: the viscosity of the supporting liquid (7) at room temperature in the step 2) is more than 5000 mPas, and the material is one or two solutions of polyvinylpyrrolidone, sodium polyacrylate, polymethyl acrylate, methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, waterborne polyurethane, polysaccharide, polyoxyethylene and the like.

10. The method for preparing regularly arranged curtain membrane modules according to claim 7, characterized in that: the glue filling process of the step 3) can be twice glue filling of the upper layer and the lower layer, and the hardness of the material liquid of the upper layer glue filling is smaller than that of the material liquid of the lower layer.

11. An automatic perfusion device for realizing the preparation method of curtain-type membrane modules which are regularly arranged according to any one of claims 7 to 10, which is characterized in that: the glue filling machine comprises a first material barrel group (9), a second material barrel group (10) and a plurality of filling execution mechanisms (11), wherein each filling execution mechanism (11) comprises a first metering device (12), a second metering device (13), a mixing glue gun (14), a multi-point injector (15) and a filling displacement device (16), outlets of the first metering device (12) and the second metering device (13) are connected to an inlet of the mixing glue gun (14), an outlet of the mixing glue gun (14) is connected to the multi-point injector (15), the filling displacement device (16) is connected to the multi-point injector (15), and inlets of the first metering device (12) and the second metering device (13) are respectively connected to outlets of the first material barrel group (9) and the second material barrel group (10).

12. The automated perfusion apparatus of claim 11, wherein: the first material cylinder group (9) and the second material cylinder group (10) are respectively provided with 1-2 material cylinders (17), the material cylinders (17) of the first material cylinder group (9) are connected with the first metering device (12), and the material cylinders (17) of the second material cylinder group (10) are connected with the second metering device (13).

13. The automated perfusion apparatus of claim 11, wherein: the number of the perfusion actuating mechanisms (11) is 1-10.

14. The automated perfusion apparatus of claim 11, wherein: the number of the point positions of the multipoint injector (15) can be 2-10, each point position is provided with an independent adjustable flow channel, different liquid material amount distribution is realized by adjusting the size of the flow channel, and the first metering device (12) and the second metering device (13) can output liquid in multiple sections at different speeds.

15. The automated perfusion apparatus of claim 11, wherein: when the supporting liquid is poured, the supporting liquid with different viscosities can be respectively poured into the first material cylinder group (9) and the second material cylinder group (10), and when the potting liquid is poured, different components of the potting liquid can be respectively poured into the first material cylinder group (9) and the second material cylinder group (10).