KR101007878B1 - Block type flat sheet module - Google Patents

Abstract

The present invention relates to a block-type flat membrane module, and is bonded between a pair of membranes and the pair of membranes, and includes an inner material having a plurality of pores formed therein to perform a flow path function of water filtered through the membrane. A plurality of filters are formed in a box shape and arranged side by side in the vertical direction and mounted on both sides of the plurality of filter media, and are formed in a box shape and mounted on both sides of the plurality of filter media and contaminated by pumping pressure of a pump. It provides a configuration comprising a pair of housings forcibly filtered through the filter medium and discharged to the outside.
By using the block-type flat membrane module as described above, since the inner material is bonded between a pair of membranes to produce a filter material, it is possible to reduce the thickness of the filter medium and to prevent deformation, and to integrate a plurality of filter media at regular intervals. It is possible to improve the degree of integration of the filter medium applied to the block-type flat membrane module.

Description

BLOCK TYPE MEMBRANE MODULE}

The present invention relates to a flat membrane module, and more particularly, to a block-type flat membrane module to which a membrane filter used for pre-treatment and post-treatment of sewage treatment, sewage treatment, wastewater treatment, water purification treatment, reverse osmosis apparatus is applied. will be.

In general, purified water refers to a process in which turbid water is treated (purified) for drinking, industrial, or agricultural use through self-cleaning or purification of the earth, and other artificial treatment.

For example, tap water refers to a system for supplying reliable drinking water through a water pipe, and the drinking water finally supplied to the user through the water pipe must be purified according to water quality standards. Therefore, if it is possible to obtain high quality raw water close to the target water quality, simple water treatment may be sufficient. However, water purification is not easy in the downstream part of a large river, which has many cities, factories, or farmland. Should be.

An example of such a water purifier is disclosed in Korean Patent Registration No. 10-372829 (registered on February 6, 2003, hereinafter referred to as 'Patent Document 1').

1 is a plan view of the water purifying apparatus according to Patent Document 1, and FIGS. 2A and 2B are perspective views illustrating the operation of the filtering apparatus included in the water purifying apparatus shown in FIG. 1.

Referring to FIG. 1, the water purifying apparatus according to Patent Document 1 includes a supply pump 1 for pumping sewage containing suspended solids at high pressure or low pressure, and collecting sewage suspended matter particles pumped by the feed pump 1. Three filter sections 3; 3a, 3b, and 3c; and a filtration apparatus 5 for supplying the water filtered by the filter section 3 through the purified water pipe 4 to filter only the pure water and the soluble substance. It is done by

At this time, the filtration device 5 is provided with the first and second membranes (5a, 5b), and filtered through only pure water and soluble substances, the filtered water through the reducing pipe (6) the water tank (7) Supply to store in.

In the conventional water purifier, the water finally washed in the water tank 7 during the forward rotation is pumped out through the discharge pipe 7a, and the pure water in the water tank 7 is reversed through the reverse supply pipe 8 during the reverse rotation. A discharge / backwash pump 9 is further provided for supplying water to the first and second membranes 5a and 5b to backwash.

However, in the filtration device according to Patent Document 1 applied to the water purification device as described above, as shown in FIG. 2A, the first and second membranes 5a and 5b are easily damaged by using a flat membrane. There was a problem.

That is, since the first and second membranes 5a and 5b are swollen into a bottle shape by high water pressure, as shown in FIG.

And the filtration device 5 according to Patent Document 1 is a blind spot where the filtration is partially carried out as the first and second membranes (5a, 5b) is deformed into a bottle-like shape during filtration, the filtration is not performed properly, In other words, there was a problem that dead space (dead space) occurs.

In addition, when backwashing, the first and second membranes 5a and 5b adhere to each other, so that backwashing may not be performed properly.

As a result, the filtration apparatus according to Patent Document 1 had to increase the installation intervals of the membranes 5a and 5b in consideration of the swelling of the membranes 5a and 5b.

Korean Patent Registration No. 10-372829 (registered February 6, 2003)

The present invention is to solve the above problems, an object of the present invention is to provide a block-type flat membrane module that prevents deformation and breakage of the filter medium in the filtration process and backwashing process.

Another object of the present invention is to provide a block-type flat membrane module capable of improving the integration degree of the block-type flat membrane module by mounting a plurality of filter media.

According to a feature of the present invention for achieving the object as described above, the present invention is bonded between a pair of membranes and the pair of membranes, a plurality of interior therein to perform the function of the flow path of water filtered through the membrane It is provided with an inner material having pores, and formed in a box shape with a plurality of filter media arranged side by side in the vertical direction, mounted on both sides of the plurality of filter media, forcibly water contaminated by the pumping pressure of the pump through the filter media It includes a pair of housings that are filtered and discharged to the outside.

The filter medium is characterized in that it is finished by a closing member coupled to the outside of the filter medium.

The finishing member is formed of an ABS resin material, characterized in that coupled to the top and bottom of the filter medium.

The finishing member is characterized in that the one side is formed in a shape that is open to forcibly couple the bonded membrane and the inner material.

The inner material is bonded between the pair of membranes by a heat fusion method or an adhesive method.

The housing has a plurality of mounting holes formed to be penetrated so that the filter medium is mounted on one side, a storage space formed in communication with the mounting hole, a discharge hole formed in communication with the storage space on one surface of the housing and stored in the storage space It characterized in that it comprises a discharge pipe coupled to the discharge hole to discharge the water to the outside.

The filter medium and the housing may be sealed to the housing using an adhesive and a waterproofing material after the filter medium is mounted to the housing.

The discharge pipe is characterized in that a pressure gauge for measuring and displaying the pressure of the water discharged to the outside by the pumping pressure of the pump and a valve for opening and closing the water discharged through the discharge pipe.

According to another feature of the invention, the invention is bonded between a pair of membranes and the pair of membranes, the inner material having a plurality of pores formed therein to perform the function of the flow path of water filtered through the membrane And a finishing member coupled to the filter medium and the outer periphery of the filter medium and having a pair of transfer holes for forcibly filtering the water contaminated by the pumping pressure of the pump through the filter medium and then delivering the discharge pipe to the discharge pipe. And, the finishing member is formed of ABS resin material, it is provided in two pairs to form a rectangular frame is characterized in that coupled to the upper, lower, left and right parts of the filter medium.

The finishing member is formed in a shape in which one side is opened to forcibly couple the bonded membrane and the inner material, and is sealed in a state in which it is coupled to the filter medium.

As described above, the present invention is to bond the inner material between a pair of membranes to produce a filter medium, it is possible to reduce the thickness of the filter medium and to prevent deformation.

In addition, the present invention may improve the degree of integration of the filter medium applied to the block-type flat membrane module by integrating a plurality of filter media at regular intervals.

In addition, in the present invention, since the deformation of the filter medium does not occur in the filtration process and the backwashing process, the dead space in which the filtration is not performed properly and the filtration is not carried out can be removed.

In addition, the present invention may be easily removed from the suspended matter stuck to the surface of the filter medium by supplying a high-pressure air instead of the backwash process using the backwash water.

1 is a plan view of a conventional water purifier.
Figures 2a and 2b is a perspective view illustrating the operation of the filtration device included in the water purifier shown in FIG.
3 is a perspective view of a block-type flat membrane module according to a first embodiment of the present invention.
4 is an exploded perspective view of the filter medium and the housing shown in FIG. 3.
5 is an operational state diagram illustrating the filtration operation of the block-type flat membrane module according to the first embodiment of the present invention.
6 is a block diagram of a block-type flat membrane module according to a second embodiment of the present invention.

Hereinafter, a block-type flat membrane module according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view of a block-type flat membrane module according to a first embodiment of the present invention, Figure 4 is an exploded perspective view of the filter medium and the housing shown in FIG.

In the present embodiment, it is described without distinguishing water to be filtered, but it should be noted that the present invention can be applied to both a water purification device for filtering constants and a sewage treatment device for filtering sewage in a sewage treatment plant.

As shown in FIG. 3, the block-type flat membrane module 10 according to the first embodiment of the present invention has a plurality of filter media 20 and a plurality of filter media 20 that filter contaminated water to be purified. And a pair of housings 30 coupled to and forcibly discharging the filtered water through the plurality of filter media 20 to the outside using the pumping pressure of the pump 40.

As shown in FIG. 4, the filter medium 20 includes an inner member 22 bonded between the pair of membranes 21 and the pair of membranes 21, and the bonded membrane 21 and the inner member are combined. The outer surface of the 22 is finished by the closing member 23, both sides of the inner material 22 serves as a delivery hole 24 for delivering the water filtered through the membrane 21 to the housing 30. do.

Membrane 21 is a polytetrafluoroethylene (hereinafter referred to as 'PTFE') membrane, polyamide (PA), poly, which is a very stable compound due to strong chemical bonding of fluorine and carbon among fluorine resins performing surface filtration. Membranes of propylene (PP), polyvinylidene fluoride (PVDF), polysulfone (PSF), cellulose acetate (CA) systems are used. Among them, the PTFE membrane has properties such as almost perfect chemical inertness, heat resistance, non-tackiness, excellent insulation stability and low coefficient of friction.

The pore size of the membrane 21 has a size between several tens of micrometers and 0.001 micrometers depending on the characteristics of the water purifier to which the block type flat membrane module 10 is applied, and the thickness of the membrane 21 is about 10 micrometers. It is preferable.

The inner material 22 has a flow path function for moving the filtered water to the housing 30 through the membrane 21 through the pores therein, and the support member for supporting the filter material 20 to maintain a constant shape. Function

To this end, the inner material 22 is made of a synthetic resin material such as plastic, foamed polypropylene, or foamed polyethylene, and a plurality of pores are formed therein. For example, the thickness of the inner material 22 is 3 to 6 mm, particularly preferably about 5 mm.

The front and rear surfaces of the inner material 22 are wrapped by the membrane 21, as shown in FIG. 4. Since the melting point of the inner material 22 is lower than the melting point of the membrane 21 at about 160 ° C., about 260 ° C., when the inner material 22 is heated to 160 ° C. or higher, the inner material 22 melts the surface while melting the membrane 21. )do.

In the present embodiment, the inner material 22 is described as being bonded to the membrane 21 by a thermal fusion method, but is not necessarily limited thereto. For example, in the present invention, the membrane 21 and the inner material 22 may be adhered to each other by applying an adhesive in the form of dots or nets to the outer surface of the inner material 22 and / or the inner surface of the membrane 21. You may join.

The filter medium 20 produced by joining the pair of membranes 21 and the inner material 22 therein is formed in a thin plate shape.

The closing member 23 is formed by using an ABS resin (Acrylonitrile Butadiene Styrene copolymer, hereinafter referred to as 'ABS resin') material, and having a long cross-section opening in a 'c' shape so that the filter material 20 is fitted to one side thereof. Is injection molded.

That is, the upper and lower portions of the filter medium 20 produced by joining the pair of membranes 21 and the inner material 22 therebetween at each of the two pairs of the opening members 23 forming the rectangular frame are interposed. The fittings are combined.

On the other hand, in the state in which the filter member 20 is coupled to the finish member 23, the gap between the finish member 23 and the filter medium 20 and each finish member 23 is in contact with each other is contaminated water and the filter medium 20 finishes. Sealing is preferably performed using at least one of an adhesive, a waterproofing agent, and a water repellent agent to prevent direct entry into the housing 30 through a gap between the members 23.

In the present embodiment, both side surfaces of the inner material 22 are formed in an open state without a finishing process using the finishing member 23. Accordingly, the present invention performs a filtration performance by performing the function of the transfer hole 24 to transfer the water filtered through the membrane 21 and the inner material 22 to the housing 30 as a whole of the inner material (22). Can be improved.

However, the present invention is not necessarily limited thereto. That is, the present invention may be modified so as to forcibly couple the finishing member 23 to both sides of the filter medium 20, and to pass through the delivery hole 24 to the finishing member 23 coupled to both sides of the filter medium 20. It may be. Accordingly, the present invention can transfer the filtered water through the filter medium 20 to the housing 30 by using the delivery hole 24 of the closing member 23 coupled to both sides of the filter medium 20.

As shown in FIG. 4, the housing 30 is provided in a pair formed in a box shape using a plastic material to be coupled to both sides of the plurality of filter media 20.

In detail, the housing 30 is formed in communication with a plurality of mounting holes 31 and mounting holes 31 in which a plurality of filter media 20 are mounted on one side, so that the delivery hole 24 of the filter media 20 is formed. It has a storage space 32 for storing the water to be transmitted through and the discharge hole 33 is formed to pass through to discharge the water stored in the storage space 32 to the outside.

As shown in FIG. 4, the mounting hole 31 is formed to extend in the vertical direction so that the filter medium 20 may be mounted, and the filter medium 20 and the mounting hole 31 after the filter medium 20 is mounted. In order to prevent the contaminated water from flowing into the storage space 32 through the gap between the seals, the sealant may be sealed using at least one of an adhesive, a waterproofing agent, and a water repellent agent.

The present invention can adjust the size of the mounting hole 31 and the distance between the mounting hole 31 according to the installation conditions of the water purifier to apply the block-type flat membrane module 10, the mounting hole 31 in the left and right directions It may be changed to form a long extension.

As shown in FIG. 4, the discharge hole 33 is formed in communication with the storage space 32 on the front of the pair of housings 30, and the discharge pipe 34 is coupled to the discharge hole 33.

The discharge pipe 34 may be a rubber hose, a metal pipe, or a mixture thereof according to the condition that the block-type flat membrane module 10 is applied.

The pump 40 receives an external power source to drive a motor provided therein to generate a pumping pressure for discharging water stored in the storage space 32 of the housing 30 to the outside through the discharge pipe 34.

That is, the pump 40 generates a pressure for pumping the water stored in the storage space 32 to the outside, so that the contaminated water in the tank is forced to be filtered through the filter medium 20 by the pumping pressure. .

The pressure gauge 41 measures and displays a pressure for discharging water to the outside by the pumping pressure generated by the pump 40 in the discharge pipe 34 between the discharge hole 33 and the pump 40 of the housing 30. And a valve 42 that opens and closes to adjust the amount of water discharged through the discharge pipe.

Accordingly, the present invention can control the filtration performance of the filter medium 20 by controlling the pumping operation of the pump 40 in accordance with the pressure displayed on the pressure gauge (41).

Next, the coupling relationship of the block-type flat membrane module according to the first embodiment of the present invention will be described in detail.

First, the coupling relationship between the filter medium 20 and the housing 30 will be described with reference to FIG. 4.

The filter medium 20 is manufactured by wrapping the front and rear surfaces of the inner material 22 with a pair of membranes 21 and bonding them in a thermal fusion method.

Subsequently, the upper, lower, right and left portions of the manufactured filter medium 20 are combined with the finishing member 23 made of ABS resin to finish the treatment. At this time, the closing member 23 is formed in a long elongated shape by opening in a 'c' shape so that the filter medium 20 is fitted on one side, and is formed by joining the membrane 21 and the inner material 22. Fit the filter medium 20 to the open portion of the closing member 23. And it is preferable to seal the gap between the finish member 23 and the filter medium 20 to prevent contaminated water from flowing into the filter medium 20 through the gap between the finish member 23 and the filter medium 20. Do.

The pair of housings 30 are coupled to both sides of the plurality of filter media 20 manufactured as described above. At this time, the filter medium 20 is mounted in the mounting hole 31 of the housing 30, and then the sealing hole is treated between the mounting hole 31 and the filter medium 20.

As a result, the finishing member 23 is coupled to the upper and lower surfaces of the filter medium 20, and the left and right surfaces of the filter medium 20 are mounted in the mounting holes 31 and then sealed, so that the membrane of the filter medium 20 is sealed. Water filtered through the 21 is prevented from being discharged to the outside of the filter medium 20 through the upper surface, the lower surface, the left side and the right side of the filter medium 20.

Delivery holes 24 formed on both sides of the filter medium 20 deliver the filtered water to the storage space 32 of the housing 30.

The discharge pipe 34 is connected to the discharge hole 33 formed in the upper front of the pair of housings 30, and the hydraulic system 41 and the valve 42 are installed in the discharge pipe 34.

Next, the operation of the block-type flat membrane module according to the first embodiment of the present invention will be described in detail.

First, the filtration operation of the block-type flat membrane module according to the first embodiment of the present invention will be described with reference to FIG. 5.

5 is an operational state diagram illustrating the filtration operation of the block-type flat membrane module according to the first embodiment of the present invention.

A plurality of filter medium 20 is installed so as to be completely immersed in a water bath containing the water to be filtered block-type flat membrane module 10 mounted in the vertical direction. The reason why the block-type flat membrane module is completely wound on the water tank is that a part of the membrane 21 of the filter medium 20 is not completely submerged in water so that the block-type membrane module is completely exposed to the air. Through the air to the inside of the housing 30 through to prevent the filtration efficiency is lowered.

When power is supplied to the pump 40, the pump 40 generates a pumping pressure while the motor provided in the pump 40 is driven, and the pumping pressure is transmitted to the housing 30 through the discharge pipe 34. .

Then, the filter medium 20, as shown by the arrow in Figure 5, to suck the contaminated water, the membrane 21 in this process to filter the contaminated water, suction only the filtered water to the internal material ( 22).

The inner material 22 delivers the filtered water to the housing 30 through the pores formed therein, and the housing 30 stores the filtered water in the storage space 32 therein and simultaneously discharges the discharge pipe 34. Discharge through.

At this time, the operator checks the pressure displayed on the pressure gauge 41 connected to the discharge pipe 34, and controls the motor drive of the pump 40 so that the pressure does not rise above the preset reference pressure. When the pumping pressure of the pump 40 rises above the reference pressure, the contaminated water is sucked into the filter medium 20 by the pumping pressure in a state where the contaminated water is not sufficiently filtered through the filter medium 20, and thus the filtration efficiency is increased. This is because it is degraded.

Next, the backwash operation of the block-type flat membrane module according to the first embodiment of the present invention will be described.

Backwashing is performed periodically to remove debris from residual suspended matter that has adhered to the membrane 21 surface of the filter media 20. That is, the reverse rotation of the pump 30 to supply the backwash water to the housing 30 through the discharge pipe 34, the storage space 32 of the housing 30 and the delivery hole 24 of the filter medium 20 is The backwash water is delivered to the inner material 22.

Then, the inner material 22 functions as a flow path for moving the backwash water in the reverse direction during the filtration operation to supply the backwash water to the membrane 21, and the internal pressure of the filter medium 20 is higher than the pressure outside the filter medium 20. As a result, the membrane 21 performs filtration in the reverse direction of the filtration process.

As a result, in the process of passing the backwash water supplied to the inner material 22 through the membrane 21, the floating residue adhered to the surface of the membrane 21 may be separated from the surface of the membrane 21.

Meanwhile, the present invention may perform the backwash operation of the membrane 21 by using high pressure air or using high pressure air and backwash water together without using the backwash water.

Next, the block-type flat membrane module according to the second embodiment of the present invention will be described in detail with reference to FIG. 6.

6 is a block diagram of a block-type flat membrane module according to a second embodiment of the present invention.

As shown in FIG. 6, the block-type flat membrane module 10 ′ according to the second embodiment of the present invention is coupled to one filter medium 20 and the outside of the filter medium 20 and pumping pressure of the pump 40. And a finishing member 23 'having a delivery hole 24' for delivering the water filtered through the filter medium 20 to the discharge pipe 34.

Finishing member 23 'is provided in two pairs to form a rectangular frame is coupled to the upper, lower, left and right portions of the filter medium (20).

That is, when the amount of water to be filtered is small or the space inside the tank in which the water is stored is narrow and the block type flat membrane module 10 including the plurality of filter media 20 and the housing 30 cannot be used, Contaminated water can be easily filtered using the block type flat membrane module 10 ′ according to the second embodiment.

In addition, the block-type flat membrane module 10 ′ according to the second embodiment of the present invention has a vertex portion of the filter medium 20 to prevent unfiltered contaminated water from flowing through the corner portion of the filter medium 20. It is preferable to join the mold member 25.

Through the process as described above, the present invention bonds the inner material between a pair of membranes to produce a filter medium, it is possible to reduce the thickness of the filter medium and to prevent deformation, by integrating a plurality of filter media block-type membrane module It is possible to improve the degree of integration of the filter medium applied to.

The scope of the present invention is not limited to the embodiments described above, but is defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self evident.

In the above embodiments, the filter medium has been described as being formed in a plate shape, but the present invention is not necessarily limited thereto. That is, the filter medium has a flexible feature as the inner material is fused between a pair of membranes. Therefore, when the block-type flat membrane module is formed in a cylinder, the filter medium may be changed into a disc shape or a spiral shape.

And the filter medium has been described as being produced by heating and fusing a pair of membrane and the inner material therebetween, the present invention is not necessarily limited thereto. For example, the present invention may bond the membrane and the inner material by applying an adhesive in the form of a dot or a net to the outer surface of the inner material and / or the inner surface of the membrane.

In addition, the backwashing operation was described as using an external backwashing water. However, the backwashing water and the high pressure air may be used together or the filter medium may be washed using only the high pressure air.

In addition, in the above embodiments, the immersion type using the pumping pressure for sucking by installing a pump at the rear end of the filter medium, but the present invention is not necessarily limited thereto.

That is, the present invention may apply the pressure type method by changing the position of the pump to supply the contaminated water to the sealed water tank or the direct filter medium.

10: block-type flat membrane module 20: filter medium
21: membrane 22: inner material
23: finishing member 24: transfer hole
30: housing 31: mounting hole
32: storage space 33: discharge hole
34: discharge pipe 40: pump
41: pressure gauge 42: valve

Claims (10)

A pair of membranes and heat are fused to the inside of the pair of membranes to be integrally formed with the membrane, and to perform a reinforcement function of supporting the flow path function of water filtered through the membrane and maintaining the shape of the membrane uniformly. Filter material having an inner material formed with a plurality of pores therein, the plurality are arranged side by side in the vertical direction,
Finishing member is formed in the shape of the one side is opened so as to fit the fused membrane and the inner material to the ABS resin material coupled to the upper and lower portion of the filter medium and
A pair of housings formed in a box shape and mounted on both sides of the plurality of filter media, forcibly filtering water contaminated by the pumping pressure of a pump through the filter media, and then discharged to the outside;
The fusion is performed by heat at a temperature higher than the melting point temperature of the inner material 160 ° C and lower than the melting point temperature of the membrane 260 ° C,
The housing is
A plurality of mounting holes formed to penetrate so that the filter medium is mounted on one side,
A storage space formed in communication with the mounting hole,
A discharge hole formed in communication with the storage space on one surface of the housing;
A discharge pipe coupled to the discharge hole to discharge the water stored in the storage space to the outside,
The filter medium and the housing are sealed to the housing using an adhesive and a waterproofing material after the filter medium is mounted in the housing,
Block type flat membrane module, characterized in that the discharge pipe is provided with a pressure gauge for measuring and displaying the pressure of the water discharged to the outside by the pumping pressure of the pump and a valve for opening and closing the water discharged through the discharge pipe.
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