CN103224269B - Ultrafiltration membrane module with two ends for water production - Google Patents

Abstract

The invention provides an ultrafiltration membrane assembly with double-end water production, which includes a columnar shell, and the two ends of the columnar shell are respectively connected with an upper end cover and a lower end cover; the lower end cover is integrated with a vertical water channel, which is used to form a raw liquid feed pipe ;The upper end cover is integrated with a vertical water pipe, which is used to form the concentrated water outlet main pipe; the upper side of the ultrafiltration membrane module has an upper water outlet, and the upper water outlet is located on the upper end cover; the lower side of the ultrafiltration membrane module has a lower water outlet , the outlet of the lower product water is on the lower end cover; the side of the longitudinal water passage pipe of the lower end cover is provided with an air port and a joint is installed; the outlet of the upper product water and the outlet of the lower product water are on the same side of the ultrafiltration membrane module. The invention has a simple structure and can realize double-end water production, and the water production volume is large; the invention can be combined with the concentrated water outlet main pipe and the raw liquid feed pipe to form a support frame, and the whole ultrafiltration device does not need to design conventional large brackets, water inlet, concentrated water, etc. The weight and volume of water pipes and equipment are reduced for easy transportation, which can reduce the floor space of ultrafiltration workshops.

Description

An ultrafiltration membrane module with double-ended water production

technical field

The invention relates to an ultrafiltration membrane module for double-end water production.

Background technique

With the development of industry, water pollution is becoming more and more serious, and people have higher and higher requirements for water treatment. More and more enterprises choose ultrafiltration for water treatment. In foreign countries, ultrafiltration is mainly used in drinking water treatment, and many waterworks have applied ultrafiltration technology to produce tap water. In China, ultrafiltration is mainly used for wastewater treatment and reuse in the industrial field, and as a pretreatment for reverse osmosis (RO). At present, in the domestic water industry market, ultrafiltration technology has been widely used in the fields of electric power, steel, chemical and other industrial wastewater treatment.

So far, most foreign external pressure ultrafiltration membrane products are 8-inch single-end water outlet hollow fiber ultrafiltration membrane modules. The method of opening the filtrate through the wire. And the length of the module is longer, generally 1.5 to 2 meters. This method of single-end water outlet of the membrane filament has a great influence on the water production of the membrane module. The test results show that when the length of the membrane filament is greater than 1.5 meters, the effect of the length of the membrane filament is significant. For example, when the inner diameter of the membrane filament is 0.6 mm and the length is 1.8 The water yield of the double-end water outlet membrane module is about 50-100% higher than that of the single-end water outlet membrane module.

Therefore, research and development have ultra-low operating pressure, high strength, high pollution resistance, high membrane flux, wider water quality application range, stable water production, excellent water quality, and double-ended water outlet. Membrane modules and their corresponding application methods are the main direction of research and development of hollow fiber membrane and module technology in the future, and the market demand is urgent and the potential is huge.

Contents of the invention

The technical problem to be solved by the present invention is to provide an ultrafiltration membrane assembly with double-end water production, which has a simple structure and can realize double-end water production. For this reason, the present invention adopts following technical scheme:

An ultrafiltration membrane module for double-ended water production is characterized in that it includes a columnar shell, and the two ends of the columnar shell are respectively connected with an upper end cover and a lower end cover;

The lower end cover is integrated with a vertical water pipe, which is used to form the raw liquid feeding pipe; the lower end cover has a raw liquid connecting pipe, and the raw liquid transported from the raw liquid feeding pipe is input into the cylindrical shell through the lower distributor;

The upper end cover integrates a vertical water pipe to form a concentrated water outlet main pipe; the upper end cover has a concentrated water connecting pipe, and the ultra-filtered concentrated water in the cylindrical shell is discharged into the concentrated water outlet main pipe through the upper distributor through the concentrated water connecting pipe;

The upper side of the ultrafiltration membrane module has an upper product water outlet, and the upper product water outlet is located on the upper end cover;

The lower side of the ultrafiltration membrane module has a lower product water outlet, and the lower product water outlet is located on the lower end cover;

There is an air port on the side of the longitudinal water pipe of the lower end cover and a joint is installed;

The upper product water outlet and the lower product water outlet are on the same side of the ultrafiltration membrane module.

On the basis of adopting the above-mentioned technical solution, the present invention can also adopt the following further technical solutions:

The upper end cover is divided into a separated lower area and an upper area, the upper area is the longitudinal water passage of the upper end cover, one end of the longitudinal water passage is a male port for socket connection with the pipe, and the other end is a The female port for socket connection with the pipe, the lower area includes the outer pipe wall connected with the cylindrical shell; the upper end cover also has a central pipe as the concentrated water communication pipe, and the height of the central pipe is lower than that of the outer pipe. The height of the pipe wall, the vertical water pipe of the upper end cover is connected to the upper end of the central pipe, the lower end of the central pipe is connected to the connecting pipe, and the connecting pipe is connected to the upper distributor connected to the upper end of the shell, and the outlet of the upper produced water In the lower area of the upper end cap.

The lower end cover is divided into a separated lower area and an upper area, the lower area is the longitudinal water channel of the lower end cover, one end of the longitudinal water channel is a male port for socket connection with the pipe, and the other end is a The female port for socket connection with the pipe, the upper area includes the outer pipe wall connected with the cylindrical shell; the lower end cover also has a central pipe as the original liquid communication pipe, and the height of the central pipe is lower than that of the outer pipe The height of the wall, the vertical water pipe of the lower end cover is connected with the lower end of the central pipe, the upper end of the central pipe is connected with the connecting pipe, and the connecting pipe is connected with the lower distributor connected with the lower end of the cylindrical shell, and the outlet of the lower produced water In the upper area of the lower end cap.

The upper end cap and the lower end cap are injection molded parts, and the upper end cap is manufactured by the same mold as the lower end cap.

The outer tube wall of the upper end cover is connected together with the upper end of the columnar shell through a limit joint, and the outer tube wall of the lower end cover is connected together with the lower end of the columnar shell through a limit joint. The limit joint is composed of an open rubber ring, The concentric opening upper rack ring, the opening lower rack ring and the hoop are composed. The opening upper rack ring, the opening lower rack ring and the opening rubber ring are connected to the hoop, and the opening rubber ring is located between the opening upper rack ring and the opening rubber ring. Between the lower rack rings with openings, the rack rings are used to clamp the corresponding upper end cover, lower end cover or columnar shell for fixing, and the open rubber rings are used to seal the seams at the joints.

The distributor includes a central connecting pipe, and the central connecting pipe has a plurality of radially arranged wings with liquid channels inside, one end of the liquid channel of the wings communicates with the liquid channel of the central connecting pipe, and the other end There is a flow port parallel to the flow port of the central connecting pipe at the first end; the outer diameter of the wing matches the inner diameter of the shell of the membrane column, and the outer peripheral surface of the wing is bonded to the inner wall of the shell of the membrane column The rear portion of the wing has a position-limiting structure, and the position-limiting structure has a position-limiting protrusion that matches the step in the end of the shell of the membrane column; the rear end surface of the wing is an inclined plane, and the position-limiting structure The part near the outer side of the rear end surface of the wing.

The membrane module in the housing includes hollow fiber membranes, and the hollow fiber membranes are sealed in the columnar housing by epoxy resin, and the epoxy resin at the upper end separates the inner space of the columnar housing from the lower space of the upper end cover. The epoxy resin at the lower end separates the inner space of the cylindrical shell from the upper space of the lower end cover, the upper end of the hollow fiber membranes passes through the lower area of the upper end cover, and the lower end of the hollow fiber membranes passes through the upper area of the lower end cover.

The upper product water outlet and the lower product water outlet are located on the side of the ultrafiltration membrane module that is perpendicular to the extending direction of the longitudinal water channel.

The bottom of the lower end cover has threaded holes for connecting with the bottom crosspiece; the top of the upper end cover has threaded holes for connecting with the upper transverse support.

The invention has an ingenious structure, which can conveniently detect and repair the hollow fiber ultrafiltration membrane column in the membrane module, the end cover can be used repeatedly, and the processing and installation are convenient, especially suitable for food, beverage, medicine, chemical industry, textile, electronics and Bioengineering and other fields are easy to promote and will bring obvious benefits to society.

Due to the adoption of the technical solution of the present invention, the present invention realizes double-end water outlet, large water production, and the present invention also has the following technical effects:

1. The upper end cover and the lower end cover combine the functions of the end cover, the pipe and the support. The present invention can be combined with the concentrated water outlet main pipe and the raw liquid feed pipe to form a support frame. The whole ultrafiltration device does not need to design a conventional large support, water inlet , Concentrated water pipeline, equipment weight and volume are reduced to facilitate transportation, and can reduce the floor space of the ultrafiltration plant.

2. Simple structure, symmetrical up and down, easy to detect.

3. The upper end cover and the lower end cover have multiple functions, reasonable structure, and are easy to manufacture. After adopting double-ended water outlets, the upper end cover and the lower end cover can also be manufactured with the same pair of molds, which can greatly reduce costs and facilitate the management of equipment components.

Description of drawings

Fig. 1 is a schematic diagram of the present invention assembled into an ultrafiltration membrane integrated device.

Fig. 2 is a side view of the ultrafiltration integrated device shown in Fig. 1 .

Fig. 3 is A-A sectional view of the present invention.

Fig. 4 is a B-B sectional view of the present invention.

Figure 5 is a schematic diagram of the upper end cap.

Figure 6 is a schematic diagram of the lower end cap.

Figure 7 is a front view of the support dispenser.

Figure 8 is a C-C sectional view of the support dispenser.

Fig. 9 is a schematic diagram of a limit joint.

Figure 10 is an exploded view of the limit joint.

Detailed ways

Refer to attached picture. When the present invention uses the ultrafiltration membrane integrated device, it can have double-end water production function. The ultrafiltration membrane integrated device has one or more rows of modules, and each row of modules is equipped with one or more modules described below.

As shown in Figure 2, the ultrafiltration membrane integrated device module for double-end water production is provided with double-row membrane columns, and the lower water outlet main pipe 1 is set in the middle gap 100 of the double-row membrane columns, and the upper part is set directly above the middle gap. The water outlet main pipe 2, and the gas transmission main pipe 3 is arranged at the lower part or directly below the middle gap of the double-row membrane column;

The membrane column adopts the structure of the present invention:

It includes a cylindrical shell 9, and the upper end cover 6 and the lower end cover 5 are respectively connected at both ends of the cylindrical shell;

The lower end cover 5 integrates a vertical water pipe 51 for forming the stock solution feeding pipe 7; the lower end cover has a stock solution connecting pipe, and the stock solution transported from the stock solution feeding pipe 7 is input into the cylindrical shell 9 through the lower distributor 91a.

The upper end cover 6 integrates a vertical water pipe 61 to form the concentrated water outlet main pipe 8; the upper end cover has a concentrated water connecting pipe, and the ultra-filtered concentrated water in the cylindrical shell is discharged into the concentrated water through the upper distributor 91b through the concentrated water connecting pipe Outlet main pipe 8;

The upper side of the ultrafiltration membrane module has an upper product water outlet 62, and the upper product water outlet 62 is located on the upper end cover 6; and is connected to the upper water outlet main pipe 2 through the pipeline 21;

The lower side of the ultrafiltration membrane module has a lower product water outlet 52, and the lower product water outlet 52 is located on the lower end cover 5; and is connected to the lower water outlet main pipe 1 through a pipeline 11;

The side of the longitudinal water pipe of the lower end cover is provided with a gas delivery port 30 and a joint is installed; the joint is connected with the main gas delivery pipe 3 through a pipeline 31;

The upper product water outlet 62 and the lower product water outlet 52 are on the same side of the ultrafiltration membrane module.

The bottom of the lower end cover 5 has a threaded hole 53, the bottom of the lower end cover rests on the bottom crosspiece 101, the threaded hole 53 is used to connect with the bottom crosspiece 101; the top of the upper end cover has a threaded hole 63 for connecting with the upper transverse bracket 102 Connection; both the bottom crosspiece 101 and the upper transverse support 102 are part of the frame of the ultrafiltration membrane integrated device.

The lower water outlet main pipe 1, the upper water outlet main pipe 2, the raw liquid feed pipe 7, and the concentrated water outlet main pipe 8 all extend longitudinally along the module.

The vertical lower water outlet main pipe 1, the upper water outlet main pipe 2, the raw liquid feed pipe 7 and the concentrated water outlet main pipe 8, the bottom crosspiece 101 perpendicular to the longitudinal direction and the upper transverse bracket 102, and the present invention connected between them constitute Skeleton of an ultrafiltration membrane integrated device.

The lower end cover 5 is divided into a separated lower area and an upper area, the lower area is the longitudinal water channel 51 of the lower end cover, and one end of the longitudinal water channel 51 is a male port for socket connection with the pipe The other end of 54 is the female port 55 for socket connection with the pipeline. When used in the ultrafiltration membrane device, the male port 54 and the female port 55 of the adjacent lower end cover 5 can be plugged in so as to connect to form the raw liquid feed pipe 7. The upper area includes an outer tube wall 56 connected to the cylindrical shell 9; the lower end cover 5 also has a central tube 57 as the stock solution communication tube, and the height of the central tube 57 is lower than the height of the outer tube wall 56 , that is, the upper end of the central tube 57 is lower than the upper end of the outer tube wall, the lower end cover longitudinal water pipe 51 is connected with the lower end of the central tube 57, the upper end of the central tube 57 is connected with the connecting pipe 58, and the connecting pipe 58 is connected with the The lower distributor 91a at the lower end of the housing 9 is connected, and the lower produced water outlet 52 is located in the upper area of the lower end cover 5 .

The upper end cover 6 is divided into a separated lower area and an upper area, the upper area is the longitudinal water passage 61 of the upper end cover, and one end of the longitudinal water passage 61 is a male port for socket connection with the pipe The other end of 64 is the female port 65 for socket connection with the pipeline. When it is used in the ultrafiltration membrane device, the male port 64 and the female port 65 of the adjacent upper end cover 6 can be plugged in so as to communicate and form the raw liquid feed Pipe 7, the lower area includes an outer pipe wall 66 connected to the cylindrical shell 9; the upper end cover also has a central pipe 67 as the concentrated water communication pipe, and the height of the central pipe 67 is lower than that of the outer pipe wall 66 Height, that is, the lower end of the central tube 67 is above the lower end of the outer tube wall, the upper end cover longitudinal water pipe 61 is connected with the upper end of the central tube 67, the lower end of the central tube 67 is connected with the connecting pipe 68, and the connecting pipe 68 is connected with the The upper distributor 91b at the upper end of the casing 9 is connected, and the upper produced water outlet 62 is located in the lower area of the upper end cover 6 .

In the present invention, the upper end cap 6 and the lower end cap 5 can be manufactured by injection molding, and the upper end cap 6 and the lower end cap 5 can be manufactured by using the same mold, and they only need to be installed in reverse during use, and holes are punched on the lower end cap 5 as Gas delivery port 30 gets final product.

The outer tube wall 66 of the upper end cover is connected together with the upper end of the columnar shell 9 through the limit joint 400, and the outer tube wall 56 of the lower end cover is connected together with the lower end of the columnar shell 9 through the limit joint 400, and the position limit The joint consists of an open rubber ring 401, a concentric open upper rack ring 402, an open lower rack ring 403 and a hoop 404. The upper open rack ring 402, the lower rack ring 403 and the open rubber ring 401 are connected to the 404, the open rubber ring 401 is located between the open upper rack ring 402 and the open lower rack ring 403, and the rack rings 402, 403 are used to clamp the corresponding upper end cover 6, lower end cover 5 or cylindrical shell 9, Playing a fixing role, the open rubber ring 401 is used to seal the corresponding seam at the joint between the outer tube wall 66 and the cylindrical shell 9 or the joint at the joint between the outer tube wall 56 and the cylindrical shell 9 . During installation, the hoop is placed at the joint, and the bolt 405 of the hoop is lightly screwed until it does not slide. The reference number 406 is a nut that cooperates with the bolt 405. After adjusting the mutual position of the end cover and the shell 9, tighten the bolt 405. The rack ring clamps the outer surface of the end cover and the shell 9 to play a fixing role, and the open rubber ring plays a sealing role. The above structure makes the assembly of the membrane column very convenient, and makes the structure of the membrane column detachable, which is convenient for maintenance and replacement.

The distributors 91a, 91b include a central connecting pipe 911, and the central connecting pipe has a plurality of wings 913 arranged radially with a liquid channel 912 inside, and one end 914 of the liquid channel 912 of the wing is connected to the central connecting pipe. The liquid channel 915 communicates, and the other end has a flow port 917 parallel to the flow port 916 of the central connecting pipe at the first end; the outer diameter of the wing matches the inner diameter of the shell of the membrane column, and the outer circumference of the wing The surface 918 is bonded to the inner wall of the shell of the membrane column; the rear portion of the wing has a stop structure 919, and the stop structure 919 has a stop protrusion that cooperates with the step 95 in the end of the shell of the membrane column 910: The rear end surface of the wing is inclined, and the limiting structure is located near the outer side of the rear end surface of the wing. The liquid channels of the distributor are evenly distributed, which improves the effect of liquid distribution and collection, and each wing also has the functions of a balance frame, a mounting frame, and a limit structure, which can further improve the stability and firmness of the distributor. And the installation is also more convenient; the limit structure 919 has the property of feet, which can further improve the stability of the entire distributor and improve its ability to resist fluid impact.

The membrane modules in the housing 9 include hollow fiber membranes, the hollow fiber membranes are sealed in the columnar housing 9 by epoxy resin 92, and the epoxy resin 92 at the upper end connects the inner space of the columnar housing 9 with the lower part of the upper end cover. The space is separated, and the epoxy resin 92 at the lower end separates the inner space of the cylindrical shell 9 from the upper space of the lower end cover, and the upper and lower ends of the hollow fiber membranes respectively pass through the lower space of the upper end cover and the upper space of the lower end cover.

As shown in the figure, the upper product water outlet 62 and the lower product water outlet 52 are located on the side of the ultrafiltration membrane module that is perpendicular to the extending direction of the longitudinal water channel.

A section of transparent pipe 20 is connected with a clamp on the pipeline 21 between the upper water outlet 62 and the upper water outlet main pipe 2, and the transparent pipe 20 is connected with the upper water outlet main pipe 2; between the lower water outlet 52 and the lower water outlet main pipe 1 The pipeline 11 is directly connected with the lower water main pipe with clamps.

The supporting feet 103 of the bottom crosspiece 101 are provided with adjusting nuts, which can adjust the horizontal height of the module;

Claims (2)

1. A kind of ultrafiltration membrane module of double-end water production, it is characterized in that it comprises columnar shell, connects upper end cover and lower end cover respectively at the two ends of columnar shell; The lower end cover is integrated with a vertical water pipe to form the raw liquid feed pipe; there is a raw liquid connecting pipe in the lower end cover, and the raw liquid transported from the raw liquid feed pipe is input into the cylindrical shell through the lower distributor; one end of the vertical water pipe is The male port is used for socket connection with the pipe, and the other end is the female port for socket connection with the pipe; The upper end cover integrates a vertical water pipe to form the concentrated water outlet main pipe; the upper end cover has a concentrated water connecting pipe, and the ultra-filtered concentrated water in the cylindrical shell is discharged into the concentrated water outlet main pipe through the upper distributor through the concentrated water connecting pipe; One end of the water pipe is a male port for socket connection with the pipe, and the other end is a female port for socket connection with the pipe; The upper side of the ultrafiltration membrane module has an upper product water outlet, and the upper product water outlet is located on the upper end cover; The lower side of the ultrafiltration membrane module has a lower product water outlet, and the lower product water outlet is located on the lower end cover; There is an air port on the side of the longitudinal water pipe of the lower end cover and a joint is installed; The bottom of the lower end cover has a threaded hole, which is used to connect with the bottom crosspiece; the top of the upper end cover has a threaded hole, which is used to connect with the upper transverse bracket; The upper end cover is divided into a separated lower area and an upper area, the upper area is the longitudinal water passage pipe of the upper end cover, and the lower area includes the outer pipe wall connected with the cylindrical shell; the upper end cover also has a central pipe, As the concentrated water communication pipe, the height of the central pipe is lower than the height of the outer pipe wall, the vertical water passage pipe of the upper end cover is connected with the upper end of the central pipe, the lower end of the central pipe is connected with the connecting pipe, and the connecting pipe is connected with the The upper distributor at the upper end of the shell is connected, and the upper produced water outlet is located in the lower area of the upper end cover; The lower end cover is divided into a separated lower area and an upper area, the lower area is the longitudinal water conduit of the lower end cover, and the upper area includes an outer pipe wall connected to the cylindrical shell; the lower end cover also has a central pipe, As the raw liquid connecting pipe, the height of the central pipe is lower than the height of the outer pipe wall, the longitudinal water passage pipe of the lower end cover is connected with the lower end of the central pipe, the upper end of the central pipe is connected with the connecting pipe, and the connecting pipe is connected with the The lower distributor at the lower end of the cylindrical shell is connected, and the outlet of the lower produced water is located in the upper area of the lower end cover; The upper end cap and the lower end cap are injection molded parts, and the upper end cap is manufactured by the same mold as the lower end cap; The outer tube wall of the upper end cover is connected together with the upper end of the columnar shell through a limit joint, and the outer tube wall of the lower end cover is connected together with the lower end of the columnar shell through a limit joint. The limit joint is composed of an open rubber ring, The concentric opening upper rack ring, the opening lower rack ring and the hoop are composed. The opening upper rack ring, the opening lower rack ring and the opening rubber ring are connected to the hoop, and the opening rubber ring is located between the opening upper rack ring and the opening rubber ring. Between the lower rack rings with openings, the rack rings are used to clamp the corresponding upper end cover, lower end cover or cylindrical shell for fixing, and the open rubber rings are used to seal the seams at the joints; The distributor includes a central connecting pipe, and the central connecting pipe has a plurality of radially arranged wings with liquid channels inside, one end of the liquid channel of the wings communicates with the liquid channel of the central connecting pipe, and the other end There is a flow port parallel to the flow port of the central connecting pipe at the first end; the outer diameter of the wing matches the inner diameter of the shell of the membrane column, and the outer peripheral surface of the wing is bonded to the inner wall of the shell of the membrane column The rear portion of the wing has a position-limiting structure, and the position-limiting structure has a position-limiting protrusion that matches the step in the end of the shell of the membrane column; the rear end surface of the wing is an inclined plane, and the position-limiting structure on the outer side of the rear end surface of the wing; The upper product water outlet and the lower product water outlet are located on the side of the ultrafiltration membrane module perpendicular to the extending direction of the longitudinal water channel. 2. A kind of ultrafiltration membrane assembly with dual-end water production as claimed in claim 1, characterized in that the membrane assembly in the housing comprises hollow fiber membranes, and the hollow fiber membranes are sealed in the cylindrical housing by epoxy resin Inside, the epoxy resin at the upper end separates the inner space of the cylindrical shell from the lower space of the upper end cover, and the epoxy resin at the lower end separates the inner space of the cylindrical shell from the upper space of the lower end cover. The hollow fiber membrane The upper end of the hollow fiber membrane is connected to the lower area of the upper end cover, and the lower end of the hollow fiber membrane is connected to the upper area of the lower end cover.