CN110585927A - High-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane and manufacturing process thereof - Google Patents

Abstract

The invention relates to the field of wastewater treatment, in particular to a high-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane, which aims to solve the problems of time consumption and high treatment cost caused by links such as coagulation sedimentation, sand filtration, carbon filtration and the like before wastewater ultrafiltration filtration, and adopts the technical scheme that: the membrane component comprises a membrane component shell and a membrane component filter element, wherein one end of the membrane component shell is provided with a liquid inlet, the other end of the membrane component shell is provided with a liquid outlet, the membrane component shell is provided with a concentrated water backflow port, the membrane component filter element comprises a plurality of filter tubes, each filter tube comprises a tube body communicated with the liquid inlet and hollow fiber membrane filaments connected in the tube body, one end of the tube body is provided with a concentrated water backflow branch communicated with the concentrated water backflow port, and an inner hole of each hollow fiber membrane filament is communicated with the liquid outlet. According to the invention, through the design of the plurality of filter pipes, the ultrafiltration membrane can bear water flow with higher flow velocity, so that a sufficient filtering effect is achieved, and the sludge on the membrane filaments can be subjected to high-speed cross-flow scouring to keep the membrane filaments from being blocked.

Description

High-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane and manufacturing process thereof

Technical Field

The invention relates to the field of wastewater treatment, in particular to a tubular elastic ultrafiltration membrane with high-speed cross flow and pollution resistance.

Background

The hollow fiber ultrafiltration membrane is one of the ultrafiltration membranes, and is the most mature and advanced technology in the ultrafiltration technology.

Chinese patent with application number CN201820731106.2 discloses a detachable cleaning type hollow fiber ultrafiltration membrane module for wastewater treatment, which has the technical scheme key points that: the membrane component comprises a membrane component filter element and a membrane component shell, wherein the membrane component filter element comprises a seal head, hollow fiber membrane filaments and a water distribution pipe, the membrane component shell comprises a membrane shell roller, a seal cover, a locking mechanism and a concentrated water converging channel, the membrane shell roller is sleeved outside the membrane component filter element, the seal cover is used for sealing the membrane shell roller and communicating the hollow fiber membrane filaments, the locking mechanism is used for connecting the seal cover and the membrane shell roller, and the side wall of the membrane shell roller is provided with a concentrated water converging channel.

When wastewater is treated, the ultrafiltration membrane needs to be introduced into the wastewater at a slow flow rate, the membrane filaments are gradually blocked by sludge in the wastewater in the introduction process of the wastewater, if the wastewater is not subjected to coagulation sedimentation treatment in advance, the concentration of sludge is high, the sludge can rapidly block the membrane filaments, and even the filtration effect cannot be achieved, the membrane filaments are firmly blocked;

if the flow speed of the wastewater is too high, although the sludge can be flushed by the aid of the sewage at the rear part, the sludge is difficult to stay on the surfaces of the membrane wires in the membrane component filter element, the membrane wires can be flushed and dispersed, the wastewater directly flows out from the concentrated water backflow port, and the filtering effect is also poor.

Therefore, the coagulation sedimentation treatment of the wastewater is a necessary flow in the traditional wastewater treatment process, a coagulant (PAM) is added in the traditional coagulation sedimentation to accelerate sedimentation, and after the sedimentation is accelerated, the supernatant is further subjected to coarse filtration and then can enter the traditional ultrafiltration membrane.

However, even if the sedimentation is accelerated, a large amount of time and rough filtration investment and operation cost are still wasted, and the wastewater treatment is restricted. Therefore, an ultrafiltration membrane capable of directly filtering wastewater without performing coagulation sedimentation and a rough filtration system of wastewater is required to solve the problem.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the tubular-structure elastic ultrafiltration membrane with the high-speed cross flow and pollution resistance, through the design of a plurality of filter tubes, the ultrafiltration membrane can bear water flow with higher flow speed, not only can the effect of full filtration be achieved, but also the sludge on membrane filaments can be fully washed, and the membrane filaments are kept from being blocked.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a tubular structure elasticity milipore filter of high-speed cross-flow anti-soil, includes membrane module shell, membrane module filter core, and the one end of membrane module shell is equipped with the inlet, and the other end is equipped with the liquid outlet, and the membrane module shell is equipped with dense water backward flow mouth in the liquid outlet side, the membrane module filter core includes many filter tubes, and every filter tube all includes the body that communicates in the inlet, connects the hollow fiber membrane silk in the body, and the body is equipped with the dense water backward flow branch mouth that communicates with dense water backward flow mouth towards the one end of liquid outlet, and the hole and the liquid outlet intercommunication of every hollow.

The invention is specially designed for treating high-concentration SS wastewater, does not need sedimentation or addition of a coagulant, and ensures that the filtered water is clear and does not carry fine suspended matters, thereby achieving standard discharge and directly entering a reverse osmosis membrane for further purification without causing blockage of the reverse osmosis membrane;

when filtering, the wastewater needs to enter each filter tube through the liquid inlet at a high speed, and the wastewater with high flow rate forms high-speed cross flow scouring on the surface of the membrane wire, so that particles and organic pollutants cannot be deposited on the surface of the membrane, and the wastewater containing sludge particles can enter a membrane system for direct solid-liquid separation;

meanwhile, the diameter of each filter tube is smaller, so even if the membrane filaments are scattered by high-speed water flow and abutted against the inner wall of the tube body, the sewage is still close to the membrane filaments, the membrane filaments can be fully contacted and flushed in a cross flow manner, and the membrane filaments can still keep the filtering effect on the sewage.

The invention is further configured to: the liquid inlet projects at the central position of the membrane module filter element, each filter tube is provided with a central distribution tube communicated with the liquid inlet, and the filter tubes are distributed in the membrane module shell at equal intervals.

High-speed rivers flow into the milipore filter from the inlet after, along central distribution pipe reposition of redundant personnel to a plurality of filter intraductals, in this in-process, in order to guarantee that every filter pipe all plays the effect as far as possible, need let during rivers average distribution to each filter pipe as far as possible, consequently, with each equidistant setting of filter pipe.

The invention is further configured to: the peripheral wall of the pipe body is provided with a plurality of concentrated water backflow branch openings which are uniformly distributed at one end of the pipe body far away from the liquid inlet.

The concentrated water backflow branch port and the liquid inlet are respectively arranged at two ends of the tube body, so that the cross flow scouring effect of the hollow fiber membrane filaments is fully realized;

the function of the concentrated water backflow branch opening in the pipe body is similar to the function of the concentrated water backflow opening in the membrane module shell, and concentrated water filtered by each filter tube is discharged from the concentrated water backflow branch opening; after being discharged, the concentrated water is converged in a gap between the membrane module shell and the filter tube, finally passes through the concentrated water backflow port and flows back to the concentration tank for continuous circulation, and as the concentration of the concentrated water increases, part of the concentrated water is discharged for filter pressing treatment.

The invention is further configured to: the membrane component shell comprises a membrane shell, a water inlet roller connected to the water inlet side of the membrane shell, a water outlet roller connected to the water outlet side of the membrane shell, and a sealing cover for sealing the water inlet roller and the water storage roller, wherein a concentrated water backflow port is formed in the water outlet roller, a first glue inlet is formed in the water inlet roller, and second glue inlets are formed in two ends of the filter tube.

During manufacturing, glue solution is needed to be poured outside membrane filaments, the conventional ultrafiltration membrane can realize glue feeding through a first glue feeding port and glue sealing is conducted on the membrane filaments, however, in the invention, as the membrane filaments and the membrane module shell are separated by a tube body, a second glue feeding port needs to be arranged on the tube body, and the same glue sealing effect can be achieved;

when gluing the side of intaking to the body and sealing, through first advancing jiao kou, when gluing the play water side to the body and sealing, through dense water backward flow mouth.

The invention is further configured to: the filter tubes are locked through the locking ring, a plurality of locking holes for locking the filter tubes are formed in the locking ring, the filter tubes are inserted into the locking holes one by one, and the outer wall of the locking ring abuts against the inner wall of the membrane module shell.

In the manufacturing process, the relative position of the filter tube needs to be locked, so that the filter tube cannot deflect in the processes of glue sealing and assembling;

in the use process, because the velocity of flow of rivers is very fast, the impact force is also great, can increase the spacing intensity to the chimney filter through the locked loop, keeps the stability of each chimney filter.

The invention is further configured to: the membrane component shell comprises a membrane shell, a water inlet roller connected to the water inlet side of the membrane shell, a water outlet roller connected to the water outlet side of the membrane shell, and a sealing cover for sealing the water inlet roller and the water storage roller, wherein a glue inlet is formed in the side wall of the water inlet roller, a locking inner ring abutting against the side wall of a locking ring is arranged on the inner wall of the water inlet roller, and the locking ring is positioned on one side of the glue inlet, which faces the water inlet end of the water inlet roller.

When the glue sealing is carried out, the locking ring is sealed in the glue solution, so that the connection strength of the glue sealing can be improved, and the locking strength of the locking ring to the filter tube is enhanced.

The invention is further configured to: the water outlet screw cylinder is also provided with a locking ring, the locking ring is positioned on one side of the concentrated water return port facing the water outlet end of the water outlet screw cylinder, and two ends of the filter tube are respectively inserted into the two locking rings.

The locking ring is respectively arranged at two ends of the filter tube, so that the limiting effect on the filter tube is further enhanced.

In view of the disadvantages of the prior art, the present invention also aims to provide a process for manufacturing a tubular elastic ultrafiltration membrane with high-speed cross-flow anti-fouling performance, which comprises all the technical features of claims 1 to 7, and is characterized by further comprising the following process steps,

s1, manufacturing a plurality of filter tubes according to size requirements, and putting one or more groups of hollow fiber membrane filaments into each filter tube, wherein one end of each hollow fiber membrane filament is positioned in each filter tube, and the other end of each hollow fiber membrane filament penetrates out of each filter tube;

s2, aligning two ends of a plurality of filter tubes, and sleeving a membrane shell, a water inlet roller, a water outlet roller and a locking ring outside the filter tubes;

s3, tightly arranging a first die at one end of the membrane module filter element, and tightly arranging a second die at the other end of the membrane module filter element, wherein the first die is in a cover shape and is positioned at one end of the hollow fiber membrane thread penetrating through the filter tube; the second die is provided with inserting rods for inserting the filter tubes, the inserting rods correspond to the filter tubes one by one, and the inserting depth of each inserting rod is larger than the distance between the glue inlet and the end face of the adjacent filter tube;

s4, horizontally placing the ultrafiltration membrane into a centrifuge, feeding glue from a liquid outlet through a concentrated water return port, and allowing the glue to flow into a glue sealing part on the water outlet side of each filter tube along a second glue inlet due to the centrifugal effect after the glue enters the membrane module shell from the concentrated water return port; B. the liquid inlet is filled with glue through the first glue inlet, and the glue flows into the glue sealing part at the water inlet side of each filter tube along the second glue inlet due to the centrifugal effect after the glue enters the shell of the membrane assembly from the first glue inlet;

s5, starting the centrifugal machine, enabling the ultrafiltration membrane to rotate by taking the cross-section diameter of the ultrafiltration membrane as an axis, throwing the glue solution to the two ends of each filter tube under the action of centrifugal force, and sealing the two ends of the hollow fiber membrane filaments;

s6, taking down the ultrafiltration membrane from the centrifuge, drying and shaping the glue solution, A, taking down the first mold, and enabling the membrane filaments to penetrate out of one end of the filter tube by using a cutting machine, namely cutting off the hollow fiber membrane filaments at one end of the water outlet roller, wherein the cut-off opening is the purified water outlet of the hollow fiber membrane filaments; b, the second die is taken down, and the central distribution pipe is remained in the filter pipe at the moment, so that the communication between the interior of the filter pipe and the liquid inlet is realized;

s7, performing water injection inspection on the manufactured ultrafiltration membrane, and observing whether water drops seep out of the glue seal position;

and S8, connecting sealing covers at two ends of the membrane module shell to finish the manufacture of the ultrafiltration membrane.

In conclusion, the invention has the following beneficial effects:

firstly, through the design of a plurality of filter tubes, the ultrafiltration membrane can bear water flow with higher flow velocity, not only can the effect of full filtration be achieved, but also the sludge on the membrane filaments can be washed, and the membrane filaments can be kept from being blocked;

and secondly, by the design of the locking ring, each filter tube can be more stable when being installed and used, and the service life of the ultrafiltration membrane is prolonged.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a sectional view of the first embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an exploded view of the hidden membrane housing and the cover according to one embodiment;

FIG. 5 is an enlarged view of the portion B of FIG. 4;

fig. 6 is a schematic partial explosion diagram of the second embodiment.

In the figure: 1. a membrane module housing; 11. a liquid inlet; 12. a liquid outlet; 13. a concentrated water return port; 14. a membrane shell; 15. a water inlet screw cylinder; 16. a water outlet screw cylinder; 17. sealing the cover; 18. a first glue inlet; 19. locking the inner ring; 2. a membrane module filter element; 21. a filter tube; 22. carrying out backflow and opening separation on concentrated water; 23. a second glue inlet; 3. a first mold; 4. a second mold; 41. an insertion rod; 5. a locking ring; 6. membrane silk; 7. a central distribution pipe.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

The first embodiment is as follows: a high-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane is shown in figures 1 and 2 and comprises a membrane module shell 1 and a membrane module filter element 2 for filtering sewage, wherein one end of the membrane module shell 1 is provided with a liquid inlet 11, the other end of the membrane module shell is provided with a liquid outlet 12, and the side surface of the liquid outlet 12 is provided with a concentrated water backflow port 13.

In order to ensure that the membrane module filter element 2 can still have enough filtering and cross-flow anti-pollution effects under the high-speed flushing of sewage, the membrane module filter element 2 is divided into eight filter tubes 21, and the eight filter tubes 21 are distributed in the membrane module shell 1 at equal intervals. Each filter tube 21 comprises a tube body and hollow fiber membrane filaments 6 connected in the tube body to have a filtering effect, wherein a central distribution tube 7 communicated with the liquid inlet 11 is arranged on the tube body. During filtering, wastewater enters each filtering pipe 21 through the liquid inlet 11 at a high speed, and the wastewater with high flow rate forms high-speed cross flow scouring on the surface of the membrane wire 6, so that particles and organic pollutants cannot be deposited on the surface of the membrane, and the wastewater containing sludge particles can enter a membrane system for direct solid-liquid separation.

Taking an ultrafiltration membrane with the diameter of 180mm as an example, when the filter tubes 21 are manufactured, eight filter tubes 21 with the diameter of 40mm are selected, the wall thickness of each filter tube 21 is 3mm, and 2000 membrane filaments 6 are accommodated in each filter tube 21. Because the diameter of each filter tube 21 is smaller, even if the membrane filaments 6 are dispersed by high-speed water flow and abut against the inner wall of the tube body, the sewage is still close to the membrane filaments 6, and compared with the similar hollow ultrafiltration membranes, the membrane filaments can still keep the filtering and cross-flow scouring effects on the sewage.

Tubular ultrafiltration membranes are also available in the market, wherein a solvent is adopted to dissolve a high molecular polymer to form a membrane liquid, and then the membrane liquid is uniformly coated on the inner wall of a membrane module shell 1 to form the membrane module. Although the tubular ultrafiltration membrane also has the function of high-speed cross flow and stain resistance, if the tubular ultrafiltration membrane is blocked, only chemical cleaning can be carried out, and acid and alkali resistance is avoided, so that the service life is very short, on the other hand, the filtration area is only the surface area of the membrane module shell 1, the filtration efficiency is very low, and in comparison, under the same space volume, the filtration area of 2000 membrane filaments 6 is greatly increased, and the filtration efficiency is improved.

Meanwhile, the hollow fiber membrane wires 6 also have a back flushing function, under the condition that the back flushing pressure is not more than 0.45Mpa, the diameter of the filtering micropores on the walls of the membrane wires 6 can be ensured to have high elasticity by virtue of the membrane wires 6, the membrane pores are greatly enlarged, and high flow is sprayed from inside to outside, so that impurities attached to the outer surfaces of the membrane wires 6 can be completely and smoothly flushed away, when the back flushing is stopped and the membrane wires 6 are switched to a running state, the filtering micropores on the walls of the membrane wires 6 are completely restored to the original pore diameter when the membrane wires 6 run and filter, the membrane wires 6 are made of polypropylene, the running PH value range is 0 ~ 14, and the membrane wires can resist the high temperature of 80 ℃.

As shown in fig. 2 and 3, the inner hole of each hollow fiber membrane wire 6 is communicated with the liquid outlet 12, a concentrated water reflux branch port 22 communicated with the concentrated water reflux port 13 is arranged on the peripheral wall of one end of the tube body facing the liquid outlet 12, and a plurality of concentrated water reflux branch ports 22 are arranged along the peripheral wall of the tube body. The membrane module shell 1 comprises a membrane shell 14, a water inlet screw cylinder 15 connected to the water inlet side of the membrane shell 14, a water outlet screw cylinder 16 connected to the water outlet side of the membrane shell 14, and two sealing covers 17 for respectively sealing the water inlet screw cylinder 15 and the water storage screw cylinder, wherein the water inlet screw cylinder 15 is communicated with a liquid inlet 11, the water outlet screw cylinder 16 is communicated with a liquid outlet 12, and a concentrated water return port 13 is formed in the water outlet screw cylinder 16.

The water inlet screw cylinder 15 and the water outlet screw cylinder 16 are connected with locking rings 5 in the same way, the locking rings 5 abut against the inner walls of the water inlet screw cylinder 15 and the water outlet screw cylinder 16, and the plurality of filter tubes 21 are locked by the locking rings 5. Eight locking holes for locking the filter tubes 21 are formed in the locking ring 5, and two ends of the eight filter tubes 21 are inserted into the locking holes one by one, so that the relative positions of the filter tubes 21 are locked, and the stability of the filter tubes 21 is improved.

As shown in fig. 4 and 5, during manufacturing, the locking ring 5 is also used to limit the positions of the eight filter tubes 21, and then the positions of the filter tubes 21 are locked by means of glue sealing. Therefore, the first glue inlet 18 is arranged on the water inlet screw tube 15, the second glue inlet 23 is arranged on the filter tubes 21, and when glue needs to be sealed, glue solution enters each filter tube 21 along the first glue inlet 18 and the second glue inlet 23, so that the glue sealing of each filter tube 21 is realized. Glue is fed through the concentrate return port 13 and the second glue inlet port 23 on the water outlet side of the filter tube 21 at the end where the water outlet roller 16 is located.

The inner wall of the water inlet screw tube 15 is also provided with a locking inner ring 19 which is tightly pressed against the side wall of the locking ring 5, so that the locking ring 5 is locked and the locking ring 5 is prevented from sliding along the filter tube 21. When the glue is sealed, the first glue inlet 18, the locking inner ring 19, the locking ring 5 and the second glue inlet 23 are all positioned in the glue solution to form sealing, so that water leakage of the second glue inlet 23 during use of the ultrafiltration membrane can be prevented, and the locking effect of the locking ring 5 can be enhanced.

When in use, the first glue inlet 18 can be sealed by a PVC blank plate, so as to further prevent sewage from seeping.

The second embodiment is different from the first embodiment in that, as shown in fig. 6: aiming at the defects in the prior art, the invention also aims to provide a manufacturing process of the tubular elastic ultrafiltration membrane with high-speed cross flow and pollution resistance,

s1, manufacturing a plurality of filter tubes 21 according to the size of the required ultrafiltration membrane, and putting one or more groups of hollow fiber membrane filaments 6 into each filter tube 21, wherein one end of each hollow fiber membrane filament 6 is positioned in the filter tube 21, and the other end of each hollow fiber membrane filament penetrates out of the filter tube 21;

s2, aligning two ends of a plurality of filter tubes 21, sleeving a membrane shell 14, a water inlet screw cylinder 15, a water outlet screw cylinder 16 and a locking ring 5 outside the filter tubes 21, and enabling the hollow fiber membrane wires 6 to penetrate out of the end where the water outlet screw cylinder 16 is located;

s3, tightly arranging a first die 3 at one end of the membrane module filter element 2, and tightly arranging a second die 4 at the other end, wherein the first die 3 is in a cover shape and is positioned at one end of the hollow fiber membrane wire 6 penetrating through the filter tube 21; the second die 4 is provided with an insertion rod 41 inserted into the filter tube 21, the insertion rod 14 is sleeved with the central distribution tube 7, the insertion rods 41 correspond to the filter tubes 21 one by one, and the insertion depth of the insertion rod 41 is greater than the distance between the second glue inlet 23 and the end face of the adjacent filter tube 21;

s4, horizontally placing the ultrafiltration membrane into a centrifuge, feeding glue from the water outlet side through a concentrated water return port 13, and allowing the glue to flow into the glue sealing part of the water outlet side of each filter tube 21 along a second glue inlet 23 due to the centrifugal effect after the glue enters the membrane module shell 1 from the concentrated water return port 13; B. the glue enters from the water inlet side through the first glue inlet 18, and after the glue enters the membrane module shell 1 from the first glue inlet 18, the glue flows into the glue sealing part of the water inlet side of each filter tube 21 along the second glue inlet 23 due to the centrifugal effect;

s5, starting the centrifugal machine, enabling the ultrafiltration membrane to rotate by taking the cross-section diameter of the ultrafiltration membrane as an axis, throwing the glue solution to the two ends of each filter tube 21 under the action of centrifugal force, and sealing the two ends of the hollow fiber membrane filaments 6;

s6, taking down the ultrafiltration membrane from the centrifuge, drying and shaping the glue solution, A, taking down the first die 3, and enabling the membrane filaments 6 to penetrate out of one end of the filter tube 21 by using a cutting machine, namely cutting off the hollow fiber membrane filaments 6 at one end of the water outlet roller 16, wherein the cutting-off opening is a purified water outlet of the hollow fiber membrane filaments 6; b, the second die 4 is taken down, and the central distribution pipe 7 is left in the filter pipe 21 at the moment, so that the interior of the filter pipe 21 is communicated with the liquid inlet 11;

s7, performing water injection inspection on the manufactured ultrafiltration membrane, and observing whether water drops seep out of the glue seal position;

and S8, connecting sealing covers 17 at two ends of the membrane module shell 1 to finish the manufacture of the ultrafiltration membrane.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (8)

1. The utility model provides a tubular structure elasticity milipore filter of high-speed cross-flow anti-soil, includes membrane module shell (1), membrane module filter core (2), and the one end of membrane module shell (1) is equipped with inlet (11), and the other end is equipped with liquid outlet (12), and membrane module shell (1) is equipped with dense water backward flow mouth (13) in liquid outlet (12) side, its characterized in that: the membrane module filter element (2) comprises a plurality of filter tubes (21), each filter tube (21) comprises a tube body communicated with the liquid inlet (11) and hollow fiber membrane wires (6) connected in the tube body, one end of the tube body facing the liquid outlet (12) is provided with a concentrated water backflow branch opening (22) communicated with a concentrated water backflow opening (13), and an inner hole of each hollow fiber membrane wire (6) is communicated with the liquid outlet (12).

2. The high-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane according to claim 1, wherein: liquid inlet (11) projection is in the central point of membrane module filter core (2), and every chimney filter (21) all is equipped with central distribution pipe (7) with liquid inlet (11) intercommunication, many chimney filter (21) equidistance distributes in membrane module shell (1).

3. The high-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane according to claim 1, wherein: the peripheral wall of the body of the filter tube (21) is provided with a plurality of concentrated water backflow branch openings (22), and the concentrated water backflow branch openings (22) are uniformly distributed at one end of the body, which is far away from the liquid inlet (11).

4. The high-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane according to claim 1, wherein: the membrane component shell (1) comprises a membrane shell (14), a water inlet screw cylinder (15) connected to the water inlet side of the membrane shell (14), a water outlet screw cylinder (16) connected to the water outlet side of the membrane shell (14), and a sealing cover (17) for sealing the water inlet screw cylinder (15) and the water storage screw cylinder, wherein a concentrated water backflow port (13) is formed in the water outlet screw cylinder (16), a first glue inlet (18) is formed in the water inlet screw cylinder (15), and second glue inlets (23) are formed in two ends of a filter tube (21).

5. The high-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane according to claim 1, wherein: the filter tubes (21) are locked through a locking ring (5), a plurality of locking holes for locking the filter tubes (21) are formed in the locking ring (5), the filter tubes (21) are inserted into the locking holes one by one, and the outer wall of the locking ring (5) abuts against the inner wall of the membrane module shell (1).

6. The high-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane according to claim 5, wherein: the membrane component shell (1) comprises a membrane shell (14), a water inlet screw cylinder (15) connected to the water inlet side of the membrane shell (14), a water outlet screw cylinder (16) connected to the water outlet side of the membrane shell (14), and a sealing cover (17) for sealing the water inlet screw cylinder (15) and the water storage screw cylinder, wherein a glue inlet is formed in the side wall of the water inlet screw cylinder (15), a locking inner ring (19) abutting against the side wall of a locking ring (5) is arranged on the inner wall of the water inlet screw cylinder (15), and the locking ring (5) is located on one side of the glue inlet facing the water inlet end of the water inlet screw cylinder (15).

7. The high-speed cross-flow anti-fouling tubular structure elastic ultrafiltration membrane according to claim 6, wherein: the water outlet screw cylinder (16) is also provided with a locking ring (5), the locking ring (5) is positioned on one side of the concentrated water return port (22) facing the water outlet end of the water outlet screw cylinder (16), and two ends of the filter tube (21) are respectively inserted into the two locking rings (5).

8. A process for manufacturing a tubular structure elastic ultrafiltration membrane with high-speed cross flow and anti-fouling performance, which comprises all the technical characteristics of claims 1 to 7, and is characterized by further comprising the following process steps,

s1, manufacturing a plurality of filter tubes (21) according to size requirements, putting one or more groups of hollow fiber membrane filaments (6) into each filter tube (21), wherein one end of each hollow fiber membrane filament (6) is positioned in each filter tube (21), and the other end of each hollow fiber membrane filament penetrates through each filter tube (21);

s2, aligning two ends of a plurality of filter tubes (21), and sleeving a membrane shell (14), a water inlet screw cylinder (15), a water outlet screw cylinder (16) and a locking ring (5) outside the filter tubes (21);

s3, tightly arranging a first die (3) at one end of the membrane module filter element (2) and tightly arranging a second die (4) at the other end, wherein the first die (3) is in a cover shape and is positioned at one end of the hollow fiber membrane wire (6) penetrating through the filter tube (21); the second die (4) is provided with inserting rods (41) for inserting the filter tubes (21), the inserting rods (41) correspond to the filter tubes (21) one by one, and the inserting depth of each inserting rod (41) is larger than the distance between the glue inlet and the end face of the adjacent filter tube (21);

s4, horizontally placing the ultrafiltration membrane into a centrifuge, feeding glue from a liquid outlet through a concentrated water return port (13), and allowing the glue to flow into a glue sealing part on the water outlet side of each filter tube (21) along a second glue inlet (23) due to the centrifugal effect after the glue enters a membrane module shell (1) from the concentrated water return port (13); B. the liquid inlet enters glue through the first glue inlet (18), and the glue flows into the glue sealing part at the water inlet side of each filter tube (21) along the second glue inlet (23) due to the centrifugal effect after the glue enters the membrane module shell (1) from the first glue inlet (18);

s5, starting a centrifugal machine, enabling the ultrafiltration membrane to rotate by taking the cross-section diameter of the ultrafiltration membrane as an axis, throwing the glue solution to the two ends of each filter tube (21) under the action of centrifugal force, and sealing the two ends of the hollow fiber membrane filaments (6) by glue;

s6, taking down the ultrafiltration membrane from the centrifuge, drying and shaping the glue solution, A, taking down the first die (3), and penetrating the membrane filaments (6) out of one end of the filter tube (21) by using a cutting machine, namely cutting off the hollow fiber membrane filaments (6) at one end where the water outlet screw (16) is located, wherein the cutting-off opening is the purified water outlet of the hollow fiber membrane filaments (6); b, the second die (4) is taken down, and the central distribution pipe (7) is left in the filter pipe (21) at the moment, so that the interior of the filter pipe (21) is communicated with the liquid inlet (11);

s7, performing water injection inspection on the manufactured ultrafiltration membrane, and observing whether water drops seep out of the glue seal position;

and S8, connecting sealing covers (17) at two ends of the membrane module shell (1) to finish the manufacture of the ultrafiltration membrane.