CN202460484U - Easily-assembled integrated enhanced-type external-pressure hollow fiber membrane assembly - Google Patents

Abstract

An easy-to-assemble and integrated reinforced external pressure hollow fiber membrane module of the utility model is characterized in that it includes at least one membrane module and two water collecting devices; the membrane module consists of several hollow fiber membranes and two sealing membranes The water collecting device is composed of a cylindrical shell, which has a cylindrical hollow cavity, the cylindrical hollow cavity forms a water flow channel, the top of the shell is provided with a first pipe interface, and the bottom of the shell is provided with a second pipe joint. The second pipe interface matched with the first pipe interface, the diaphragm assembly socket is opened on the side wall of the housing; in the assembled state, the two water collecting devices are placed face to face with their diaphragm assembly sockets, and two of each diaphragm assembly The film-sealed container is correspondingly inserted into the sockets of the membrane components of the two water collecting devices, and the hollow lumen of the hollow fiber membrane in the membrane components communicates with the cylindrical hollow cavity of the water collecting device. The utility model can flexibly adjust the number of membrane modules used according to the water quality and quantity, and the membrane wires are not easy to be damaged during assembly, and are firm and durable.

Description

Easy to assemble and integrate reinforced external pressure hollow fiber membrane modules

technical field

The utility model belongs to purification equipment in the field of water supply treatment, in particular to an easily assembled and integrated reinforced external pressure hollow fiber membrane module. In the drinking water production process, surface water with large changes in indicators such as oil and petroleum is used as influent.

Background technique

Due to environmental pollution and water shortage in today's world, the rapid development of water treatment technology is forced. Due to the many advantages of hollow fiber membrane technology (including larger filtration area, easier reverse cleaning and lower cost, etc.), it is widely used in water supply treatment, sewage treatment and reclaimed water reuse.

The structure of the hollow fiber membrane in the hollow fiber membrane technology is a hollow tube. The length of the hollow tube is much larger than its diameter, and it looks like a silk. Therefore, the hollow fiber membrane is vividly called a membrane filament. The tube wall of the membrane filament is a polymer film with a small pore size, which is the filter membrane that acts as a filter. Several (usually thousands) membrane filaments are assembled into a membrane module. There are many membrane modules in the hollow fiber membrane treatment system, driven by external energy or chemical potential difference, the tube wall filter membrane of the membrane filament in each membrane module separates and purifies the liquid containing solute and solvent.

Hollow fiber membrane systems are divided into external pressure type and internal pressure type. At present, almost all of the systems used in the field of water treatment are internal pressure hollow fiber membrane systems. The membrane module of the internal pressure hollow fiber membrane system has a hard pressure-bearing membrane shell, and the membrane filament bundle composed of thousands of membrane filaments is placed in the membrane shell. The two ends of the membrane shell are sealed, and the membrane filaments pass through the sealing materials at both ends. (Sealing glue) protruding, the hollow lumen of the membrane filament protruding from one end is connected with the incoming water, and the incoming water enters the hollow lumen of each membrane filament, driven by the pressure difference, and penetrates the membrane filament radially from inside to outside After the tube wall is filtered by the membrane, it becomes purified clean water. The clean water enters the gap between the membrane filament and the membrane shell wall in the membrane shell, and then flows out from the water inlet/outlet on the membrane shell, which is the obtained purified water. The pollutants in the membrane remain in the hollow lumen of the membrane and flow out from the other end of the membrane. During the process, it is necessary to regularly backflush or use a chemical cleaning solution to clean the hollow lumen of the membrane filament to prevent pollutants (including bacteria) from clogging the membrane filament. Due to the narrow space inside the membrane shell, there are many sanitary dead spots, which makes it difficult for the internal pressure hollow fiber membrane system to be completely recoiled or cleaned. The water flow is easy to deposit in the membrane shell, polluting the water quality and breeding bacteria. In the process of drinking water in the field, it is easy to bring hidden dangers to water quality safety. In addition, because it is not easy to recoil or clean, the membrane filaments are easy to block, and when the frequency of recoil or cleaning is increased in order to improve the filtration capacity of the membrane filaments (called water flux), it will increase operating costs and waste A large amount of time will also reduce the service life of the membrane filament, and correspondingly increase the maintenance cost of the equipment.

When the external pressure hollow fiber membrane system is used in the field of water supply treatment, the membrane silk is connected with the water flow channel of the water collection device, the membrane silk is immersed in the book body to be treated in the pool, and the water flow channel of the water collection device passes through the pipeline and the suction pump/ Backflush or purge pump connections. In the water production stage, the water body is aerated, the suction pump is turned on, and the water in the pool passes through the filter membrane of the tube wall of the membrane filament and then enters the hollow lumen of the membrane filament, and passes through the hollow lumen at the end of the membrane filament along the lumen Enter the water flow channel of the water collecting device, and then enter the follow-up clear water pool through the pipeline communicated with the water flow channel. Pollutants (including bacteria) in the water body are intercepted by the membrane tube wall and accumulate on the outside of the membrane tube wall, and the membrane filament is continuously impacted by the water flow and airflow in the aerated water body to take away the accumulated pollution on the outside of the membrane tube wall The pollutants and pollutants enter the water body of the pool, and the water body in the pool is discharged after a period of operation. During the backflushing phase or the cleaning phase, the direction of water flow is reversed. In order to be able to withstand the repeated impact of water flow and airflow, the membrane wire is a reinforced external pressure membrane wire with a reinforced structure added to the wall material.

Compared with the internal-pressure hollow fiber membrane system, the external-pressure hollow fiber membrane system has a large external space for the membrane and fewer dead spots for sanitation because the membrane is immersed in the water body, and the recoil and cleaning are thorough without polluting the water quality. The wall membrane is not easy to clog, and the system operation and maintenance costs are low. In addition, the external pressure membrane system does not need a membrane shell, so the structure is simple and the cost is low.

Whether the external pressure hollow fiber membrane module using reinforced external pressure membrane filaments can be integrated and easy to assemble is very important, because this will affect the adaptability of the hollow fiber membrane system to different water quality and water inflow (that is, the impact resistance) , In addition, if the membrane module is not easy to assemble, it is easy to damage the membrane filament during assembly, thereby reducing the service life of the membrane module and the membrane treatment system.

Utility model content

The utility model provides an easy-to-assemble and integrated reinforced external-pressure hollow fiber membrane module, which can flexibly adjust the number of used membrane modules according to the water quality and quantity, is not easy to damage the membrane wires during assembly, and is firm and durable.

In order to achieve the above purpose, the technical solution adopted by the utility model is: an easily assembled and integrated reinforced external pressure hollow fiber membrane module, including at least one membrane module and two water collecting devices;

The membrane module is composed of several hollow fiber membranes and two sealed containers. The hollow fiber membrane has a hollow lumen, and the wall of the hollow lumen is provided with microfiltration holes. The membrane composed of several hollow fiber membranes One end of the tow is encapsulated in a film-sealing container through a colloid block, and the other end of the membrane tow is encapsulated in another film-sealing container through a colloid block. exposed at the end;

The water collecting device is a columnar shell, the shell has a cylindrical hollow cavity, the cylindrical hollow cavity forms a water flow channel, the top of the shell is provided with a first pipe interface, the first pipe interface and the cylindrical hollow cavity Connected, the bottom of the housing is provided with a second pipe interface matching the first pipe interface, the second pipe interface communicates with the cylindrical hollow cavity, and a diaphragm assembly socket is opened on the side wall of the housing, and the diaphragm assembly socket is connected to the cylindrical The hollow cavity is connected;

In the assembled state, the two water collection devices are placed face to face with their diaphragm assembly sockets, and the two sealing containers in each diaphragm assembly are inserted into the diaphragm assembly sockets of the two water collection devices correspondingly. The hollow lumen of the hollow fiber membrane communicates with the cylindrical hollow lumen of the water collecting device.

The relevant content in the above-mentioned technical scheme is explained as follows:

1. In the above solution, the external pressure hollow fiber membrane module further includes brackets for supporting two water collecting devices.

2. In the above scheme, the support is composed of at least two fixing rods, and the at least two fixing rods are arranged between two water collecting devices, and are parallel to the length direction of the hollow fiber membrane tow, and the two collecting devices The rod end corresponding to each fixed rod on the water device is provided with a fixed rod installation groove or hole, and one end of each fixed rod is fixedly inserted in a fixed rod installation groove or hole of a water collecting device, while the other end is fixedly inserted into the fixed rod installation groove or hole. Installed in the fixing rod mounting groove or hole of another water collecting device.

3. In the above scheme, the top and bottom of the water collecting device housing are provided with two fixing rod installation grooves or holes respectively, and the two fixing rod installation grooves or holes are symmetrically arranged on the top or bottom of the housing, corresponding to The four pole mounting slots or holes are equipped with four poles.

4. In the above solution, the casings of the two water collecting devices are provided with connecting rod mounting holes for horizontal connection, and the axis of the connecting rod mounting holes is perpendicular to the length direction of the hollow fiber membrane tow.

5. In the above solution, the top and the bottom of the housing of the water collecting device are respectively provided with a connecting rod mounting hole.

6. In the above solution, bayonets for accommodating the film-sealing container are provided on the inside around the socket of the diaphragm assembly on the housing of the water collecting device.

7. In the above solution, the first pipe connection is a threaded pipe connection, and the second pipe connection is a smooth pipe connection.

8. In the above solution, at least one support partition for the sealing film container arranged along the length direction is arranged in the cylindrical hollow cavity.

9. In the above solution, several reinforcing ribs are provided on the outer wall of the housing.

The working principle of the utility model is: each external pressure hollow fiber membrane module can be matched with one, two or more diaphragm modules, just by adjusting the size of the diaphragm module or adjusting the outer dimension of the water collecting device. When assembling a membrane module, insert the two ends of the fixing rods into the corresponding fixing rod installation grooves on the shells of the two water collecting devices, so that the water collecting devices and the fixing rods form a solid frame structure. At this time, the two water collecting devices The sockets of the diaphragm components on the top face each other, and then insert the sealing film containers at both ends of the diaphragm components into the sockets of the diaphragm components on the two water collecting devices, and use sealing materials to seal the gap between the film sealing container and the sockets of the diaphragm components. The hollow lumen at the end of the membrane filament in the film-sealed container communicates with the water flow channel of the water collecting device.

When the membrane module is used, it is submerged in the water body of the pool with the membrane wire placed horizontally (that is, the water collection device is erected). In addition, different numbers of membrane modules are integrated to adapt to the inflow of different water quality and water volume.

When multiple membrane modules need to be integrated, they can be integrated vertically and horizontally. When vertically integrated, the first pipe interface at the top of the water collection device shell of the lower membrane module is inserted into the second pipe interface at the bottom of the water collection device shell of the adjacent upper membrane module, and the gap between the two pipe interfaces is sealed with sealing materials such as sealing rings Or other sealing devices for sealing, and the water flow channels of the water collecting devices of each membrane module are connected up and down after being vertically integrated. The first pipe connection on the top of the water collection device of the uppermost membrane module is connected with the suction pipe, the backwash pipe and the cleaning pipe, while the second pipe connection at the bottom of the water collection device shell of the lowermost membrane module is made of engineering plastics and other materials for sealing. The suction pipeline is connected with the suction pump, the recoil pipeline is connected with the recoil pump, and the cleaning pipeline is connected with the cleaning pump.

When integrating in the horizontal direction, the connecting rods are used to sequentially pass through the corresponding connecting rod installation holes on the water collection devices of the adjacent membrane modules in the lateral direction, so that the membrane modules are integrated horizontally.

In the water production stage, under the suction of the suction pump, the water in the pool passes through the filter membrane of the hollow fiber membrane tube wall from the outside to the inside, enters the membrane tube lumen, and then flows into the water collection of each membrane module. In the water flow channel of the device, the first pipe interface on the top of the water collection device shell of the uppermost membrane module finally flows out through the connected suction pipe and enters the subsequent process flow. The pollutants accumulated on the outside of the membrane silk enter the water body of the pool with the impact of the water flow and air flow, and the water body in the pool is discharged regularly during the water production stage. In the backflush or cleaning stage, under the pressure of the backflush pump or the cleaning pump, the backflush water or cleaning liquid first flows into the water flow channel of the water collection device of each membrane module through the backflush pipe or cleaning pipe, and then enters the membrane lumen , from the inside to the outside through the tube wall filter membrane of each membrane filament, recoil or clean the membrane filament tube wall filter membrane and enter the pool water body, and the pool water body is discharged after the backflush or cleaning process.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

1. Since the utility model realizes the vertical and horizontal integration of the membrane modules, it saves more land occupation; according to the different quality and quantity of incoming water, the number of membrane modules used can be flexibly adjusted, and it can be used for various existing filter pools , clarification tank and other filtration equipment are transformed into the pool of the enhanced external pressure hollow fiber membrane treatment system, no need to build a separate membrane system workshop, small investment, more flexible use, more convenient maintenance, and can be combined with other advanced treatment processes , to provide conditions for the comprehensive transformation of water plants.

2. Since the utility model is easy to assemble, the membrane filaments on the membrane module will not be damaged during assembly, which can prolong the service life of the system and reduce maintenance costs.

3. Since the membrane module of the utility model is connected by connecting rods and fixed by fixing rods, the structure is firmer, and it is not easily deformed during use, and the membrane filaments can also be protected to avoid rupture of the membrane filaments.

4. Since the first pipe interface of the utility model is a threaded pipe interface, when multiple membrane modules are integrated, the first pipe interface of the uppermost membrane module is more convenient to connect with the pipeline; the second pipe interface is a smooth pipe Interface, when multiple membrane modules are integrated, make the upper and lower membrane modules face up to each other, and then insert the first pipe interface at the top of the lower membrane module directly into the second pipe interface at the bottom of the upper membrane module and seal it to avoid It solves the situation that the vertical membrane module is not easy to align due to thread error and screw operation error during threaded connection.

Description of drawings

Accompanying drawing 1 is the assembly structure figure of preferred embodiment of the present utility model;

Accompanying drawing 2 is the three-dimensional structural diagram of the diaphragm assembly in accompanying drawing 1;

Accompanying drawing 3 is the three-dimensional structural diagram of the water collecting device in accompanying drawing 1;

Accompanying drawing 4 is the integrated structural diagram of a plurality of preferred embodiments of the utility model in horizontal and vertical directions.

In the above drawings: 1. Diaphragm assembly; 2. Water collection device; 3. Hollow fiber membrane; 4. Sealed film container; 5. Shell; 6. Cylindrical hollow cavity; 7. First pipe interface; 8. Second pipe interface; 9. Diaphragm component socket; 10. Bayonet; 11. Connecting rod mounting hole; 12. Fixing rod mounting groove; 13. Fixing rod; 14. Sealing film container supporting partition; 16. Colloid block.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment: See Figures 1-4, an easily assembled and integrated reinforced external pressure hollow fiber membrane module, including four membrane modules 1 and two water collection devices 2;

The membrane module 1 is composed of several (thousands) hollow fiber membranes 3 and two sealed containers 4. The hollow fiber membranes 3 have hollow lumens, and microfiltration holes are arranged on the walls of the hollow lumens. One end of the membrane tow that several hollow fiber membranes 3 are formed is packaged in a film-sealing container 4 by a colloid block 16, and the other end of the membrane tow is packaged in another film-sealing container 4 by a colloid block 16. The hollow fiber membranes 3 at both ends of the tow are exposed at the ends of the two film-sealing containers 4;

The water collecting device 2 is a cylindrical housing 5, the housing 5 has a cylindrical hollow cavity 6, the cylindrical hollow cavity 6 forms a water flow channel, the top of the housing 5 is provided with a first pipe interface 7, the first The pipe interface 7 communicates with the cylindrical hollow cavity 6. The bottom end of the housing 5 is provided with a second pipe interface 8 matching the first pipe interface 7. The second pipe interface 8 communicates with the cylindrical hollow cavity 6. The side wall of the housing 5 A diaphragm assembly socket 9 is opened on the top, and the diaphragm assembly socket 9 communicates with the cylindrical hollow cavity 6;

In the assembled state, the two water collecting devices 2 are placed face to face with their diaphragm assembly sockets 9, and the two sealing containers 4 in each diaphragm assembly 1 are correspondingly inserted into the diaphragm assembly sockets 9 of the two water collecting devices 2 , the hollow lumen of the hollow fiber membrane 3 in the membrane module 1 communicates with the cylindrical hollow cavity 6 of the water collecting device 2 .

The external pressure hollow fiber membrane module also includes a bracket for supporting two water collection devices 2, the bracket is composed of two fixed rods 13, and the two fixed rods 13 are arranged between the two water collection devices 2 and parallel to the hollow fiber In the length direction of the film 3 membrane tow, the rod ends corresponding to each fixed rod 13 on the two water collecting devices 2 are all provided with a fixed rod installation groove 12 or a hole, and one end of each fixed rod 13 is fixedly inserted in a collection The fixed rod of the water device 2 is installed in the groove 12 or the hole, and the other end is fixedly inserted in the fixed rod installed groove 12 or the hole of another water collecting device 2 . The top and the bottom of the housing 5 of the water collecting device 2 respectively offer two fixing rod installation grooves 12 or holes, and the two fixing rod installation grooves 12 or holes are symmetrically arranged on the top or the bottom of the housing 5, corresponding to four fixing rods. Rod mounting groove 12 or hole are furnished with four fixed rods 13.

In other examples, the bracket can also be constituted by a frame, and the two water collecting devices 2 are both fixedly seated on the frame.

The casings of the two water collection devices 2 are provided with connecting rod mounting holes 11 for transverse connection, and the axis of the connecting rod mounting holes 11 is perpendicular to the length direction of the hollow fiber membrane 3 membrane tow. A connecting rod mounting hole 11 is respectively provided at the top and the bottom of the housing 5 of the water collecting device 2 .

A bayonet 10 for accommodating the film-sealed container 4 is provided on the inner side around the diaphragm assembly socket 9 on the casing 5 of the water collecting device 2 .

The first pipe connection 7 is a threaded pipe connection, and the second pipe connection 8 is a smooth pipe connection.

A sealing film container supporting partition 14 arranged along the length direction is arranged in the cylindrical hollow cavity 6 .

Several reinforcing ribs 15 are provided on the outer wall of the casing 5, which not only play a role in strengthening the strength of the membrane module, but also serve as handles for easy handling during transportation.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (10)

1. an easy assembling can integrated enhanced external pressure hollow fiber film assembly, it is characterized in that: comprise at least one diaphragm unit (1) and two captations (2);

Said diaphragm unit (1) is made up of several hollow-fibre membranes (3) and two envelope film containers (4); Hollow-fibre membrane (3) has the hollow tube chamber; The tube wall of hollow tube chamber is provided with the microfiltration hole; One end of the film tow that several hollow-fibre membranes (3) are formed is encapsulated in the envelope film container (4) through colloid piece (16); The other end of film tow is encapsulated in another envelope film container (4) through colloid piece (16), and the hollow-fibre membrane (3) at said film tow two ends exposes in the end of two envelope film containers (4);

Said captation (2) is the housing (5) of a column; This housing (5) has a cylindrical hollow chamber (6); This cylindrical hollow chamber (6) forms water stream channel, and housing (5) top offers first interface tube (7), and first interface tube (7) is communicated with cylindrical hollow chamber (6); Housing (5) bottom offers second interface tube (8) that matches with first interface tube (7); Second interface tube (8) is communicated with cylindrical hollow chamber (6), offers diaphragm unit socket (9) on housing (5) sidewall, and diaphragm unit socket (9) is communicated with cylindrical hollow chamber (6);

Under confined state; Two captations (2) are placed with its diaphragm unit socket (9) face-to-face; In the diaphragm unit socket (9) of corresponding two captations of insertion of two envelope film containers (4) (2) in each diaphragm unit (1), the hollow tube chamber of the hollow-fibre membrane (3) in the diaphragm unit (1) is communicated with the cylindrical hollow chamber (6) of captation (2).

2. easy assembling according to claim 1 can integrated enhanced external pressure hollow fiber film assembly, and it is characterized in that: said external pressure hollow fiber film assembly also includes the support that is used to support two captations (2).

3. easy assembling according to claim 2 can integrated enhanced external pressure hollow fiber film assembly; It is characterized in that: said support is made up of at least two fixed bars (13); Said at least two fixed bars (13) are located between two captations (2); And the length direction that is parallel to hollow-fibre membrane (3) film tow; The rod end that two captations (2) are gone up corresponding to every fixed bar (13) all offers fixed bar mounting groove (12) or hole; One end of every fixed bar (13) fixedly is inserted in the fixed bar mounting groove (12) or hole of a captation (2), and the other end fixedly is inserted in the fixed bar mounting groove (12) or hole of another captation (2).

4. easy assembling according to claim 3 can integrated enhanced external pressure hollow fiber film assembly; It is characterized in that: two fixed bar mounting grooves (12) or hole are respectively offered in the top of said captation (2) housing (5) and bottom; Two fixed bar mounting grooves (12) or hole are symmetrical set in the top or the bottom of housing (5), and corresponding four fixed bar mounting grooves (12) or hole are furnished with four fixed bars (13).

5. easy assembling according to claim 1 can integrated enhanced external pressure hollow fiber film assembly; It is characterized in that: all offer the connecting rod installing hole (11) that is used for horizontal connection on the housing of said two captations (2), the axis normal of this connecting rod installing hole (11) is in the length direction of hollow-fibre membrane (3) film tow.

6. easy assembling according to claim 5 can integrated enhanced external pressure hollow fiber film assembly, and it is characterized in that: a connecting rod installing hole (11) is respectively offered in the top of said captation (2) housing (5) and bottom.

7. easy assembling according to claim 1 can integrated enhanced external pressure hollow fiber film assembly, it is characterized in that: the diaphragm unit socket (9) on said captation (2) housing (5) inboard all around is provided with the bayonet socket (10) that is used to hold envelope film container (4).

8. easy assembling according to claim 1 can integrated enhanced external pressure hollow fiber film assembly, and it is characterized in that: said first interface tube (7) is the screwed pipe interface, and said second interface tube (8) is the smooth tubes interface.

9. easy assembling according to claim 1 can integrated enhanced external pressure hollow fiber film assembly, it is characterized in that: be provided with the envelope film container supporting clapboard (14) that at least one is arranged along its length in the said cylindrical hollow chamber (6).

10. easy assembling according to claim 1 can integrated enhanced external pressure hollow fiber film assembly, and it is characterized in that: said housing (5) lateral wall is provided with some reinforcements (15).

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