KR102593603B1 - Filter for flat type water treatment, filter module and the method of manufacturing the same - Google Patents

Abstract

A flat filter for water treatment is provided. A flat filter for water treatment according to an embodiment of the present invention is a filtration member including a plate-shaped first support having a predetermined area and a pair of nanofiber webs each formed of nanofibers on both sides of the first support. ; And a support frame disposed to surround the edge of the first support and having a flow path formed along the longitudinal direction to allow fluid flowing in from the first support to move, wherein the pair of nanofiber webs includes the first support. It includes a first part disposed in an area corresponding to one support, and a second part extending from the edge of the first part so as to protrude outward from the edge of the first support by a predetermined length, and the support frame is It is provided to have a width equal to the thickness of the first support or a width smaller than the thickness of the first support and is disposed between a pair of second parts facing each other, wherein the pair of second parts is the support. Each can be fixed to both sides of the frame through heat fusion.

Description

Flat type filter for water treatment, flat type filter module, and manufacturing method thereof {Filter for flat type water treatment, filter module and the method of manufacturing the same}

The present invention relates to a flat filter for water treatment, a flat filter module, and a method of manufacturing the same.

Due to the rapid development of industry and concentration of population in cities, urban sewage and industrial wastewater have increased. This increase in wastewater has become a huge problem in modern society, and various wastewater treatment facilities have been proposed to treat this economically and efficiently.

Such wastewater treatment facilities may be equipped with a plurality of filters to filter wastewater, and wastewater is filtered through a filtration member included in each filter.

At this time, when the filtering member is provided in a flat shape with a predetermined area, a frame for supporting the filtering member is fastened to the edge of the filtering member.

Typically, the frame is fixed to the edge of the filtering member through an adhesive member. Accordingly, there is a problem in that the work process is cumbersome because an adhesive process is required to fix the frame and the filtering member.

KR 10-1242080 B1

The present invention was conceived in consideration of the above points, and provides a flat filter for water treatment, a filter module, and a manufacturing method thereof that can increase work productivity by inserting and arranging a support frame between nanofiber webs facing each other. There is a purpose.

In order to solve the above-described problem, the present invention includes a filtration member including a plate-shaped first support having a predetermined area and a pair of nanofiber webs each formed of nanofibers on both sides of the first support; And a support frame disposed to surround the edge of the first support and having a flow path formed along the longitudinal direction to allow fluid flowing in from the first support to move, wherein the pair of nanofiber webs includes the first support. It includes a first part disposed in an area corresponding to one support, and a second part extending from the edge of the first part so as to protrude outward from the edge of the first support by a predetermined length, and the support frame is It is provided to have a width equal to the thickness of the first support or a width smaller than the thickness of the first support and is disposed between a pair of second parts facing each other, wherein the pair of second parts is the support. We provide a flat filter for water treatment that is fixed to both sides of the frame through heat fusion.

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Additionally, the filtering member may be implemented as a five-layer structure including a second support interposed between the nanofiber web and the first support. At this time, the second support includes a fixing part disposed in an area corresponding to the second part, and one side of the nanofiber web and the support frame can be fixed to both sides of the fixing part, respectively, and the second part And at least part of the fixing part may be melted by heat.

Additionally, the support frame may include a plurality of frames, and the plurality of frames may have a flow path formed along the longitudinal direction so that fluid flowing in from the first support can move.

In addition, the plurality of frames include a first plate and a pair of second plates each extending from both ends of the first plate, and the flow path is a space formed between the first plate and the pair of second plates. It can be.

Additionally, at least one protrusion having a predetermined length may be formed on an end side of the second plate so that it can be embedded into the end side of the first support.

In addition, it includes a plurality of connecting members coupled to the corner side of the support frame, and at least one connecting member among the plurality of connecting members may be provided with a spacing adjuster for adjusting the spacing between neighboring filtering members. You can.

In addition, the connecting member includes a body coupled to a corner of the support frame; and a spacing adjuster having a fastening hole through which a fastening bar having a predetermined length passes.

In addition, the spacing adjuster includes a spacing member that protrudes at a certain height on at least one side of the extension plate to adjust the gap between an extension plate extending from the body and through which the fastening hole is formed, and a filtering member disposed parallel to each other. can do.

Additionally, at least one of the connecting members may include a receiving port for discharging the filtered water flowing into the flow path formed in the support frame to the outside.

Meanwhile, the present invention includes the above-described flat filter for water treatment arranged in parallel and including at least one receiving port through which filtered water filtered through a filtering member is discharged; A fixing frame for fixing the plurality of flat filters for water treatment arranged in parallel to each other via at least one fastening bar; and at least one common receiving member that is connected in a one-to-one match with the receiving ports provided in each of the flat filters for water treatment and collects the filtrated water discharged from each receiving port. .

In addition, the present invention includes the steps of preparing a filtration member including a first support having a predetermined area and a pair of nanofiber webs formed on both sides of the first support; And arranging a plurality of frames with a flow path formed therein to surround an edge of the first support, and fixing the filtering member and the plurality of frames to each other, wherein the pair of nanofiber webs is formed with the first support. It is provided to have a relatively larger area than the support and includes a portion that protrudes outward from the edge of the first support by a certain length, and each of the plurality of frames has a width equal to the thickness of the first support or the first support. They are arranged to have a width smaller than the thickness and are positioned between parts that face each other and protrude outward for a certain length from the edge of the first support, and the pair of nanofiber webs extends outward from the edge of the first support. A method of manufacturing a flat filter for water treatment is provided in which the protruding portion of a certain length is fixed to both sides of the frame through heat fusion.

At this time, a second support having a relatively larger area than the first support is interposed on one side of the nanofiber web, so that the filtration member can be implemented as a five-layer structure, and the edge side of the nanofiber web is the second support. It can be fixed to both sides of the frame through heat fusion.

According to the present invention, work productivity can be increased by fixing the frame inserted between the nanofiber webs and the edge of the nanofiber web through heat fusion.

In addition, since the attachment area is increased by heat fusion, airtightness can be improved and rigidity against backwash pressure can be increased.

1 is a diagram showing a flat filter for water treatment according to the present invention;
Figure 2 is an exploded view of Figure 1;
Figure 3 is a front view of Figure 1;
Figure 4 is a cross-sectional view taken along the AA direction in Figure 3;
Figure 5 is a cross-sectional view in the BB direction in Figure 3;
Figure 6 is a cross-sectional view taken along CC in Figure 3;
Figure 7 is a diagram schematically showing the size relationship of the first support, nanofiber web, and second support applied to the filtration member of the present invention;
Figure 8 is a view showing the arrangement relationship between the filtration member and the frame applied to the flat filter for water treatment according to the present invention, a) is a view showing the case where a gap is formed between the frame and the second support, and b) is a view showing the case where a gap is formed between the frame and the second support. A drawing showing a case where the filtration member is implemented as a three-layer structure,
Figure 9 is a view showing the coupling relationship between the connecting member, the support frame, and the filtration member in the flat filter for water treatment according to the present invention;
Figure 10 is a partial cutaway view showing the connection member and frame applied to the flat filter for water treatment according to the present invention in a separated state;
FIG. 11 is a view showing a state in which the connecting member, frame, and filtering member in FIG. 10 are combined;
12 is a view showing another form of a receiving port applied to a flat filter for water treatment according to an embodiment of the present invention;
Figure 13 is a diagram showing a flat filter module for water treatment according to an embodiment of the present invention, and
FIG. 14 is a diagram showing a state in which the fixing frame in FIG. 13 has been removed.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and identical or similar components are given the same reference numerals throughout the specification.

The flat filter 100 for water treatment according to an embodiment of the present invention includes a filtration member 110 and a support frame as shown in FIGS. 1 and 2.

The filtration member 110 is for filtering foreign substances contained in a liquid to be filtered, such as wastewater. Although a known filtration member may be used, the nanofiber web 112 is disposed on both sides of the first support 111. It may be in the form of a plate.

In the present invention, the nanofiber web 112 is for filtering out foreign substances contained in the liquid to be filtered while the liquid to be filtered passes through suction pressure, and the first support 111 is the nanofiber. It supports the web 112 and can serve as a passage through which the filtered water produced by the nanofiber web 112 moves.

At this time, the filtration member 110 may be made of a three-layer structure in which the nanofiber web 112 is directly attached to both sides of the first support 111 (see (b) of FIG. 8), and the nanofiber It may have a five-layer structure in which a separate second support 113 is interposed between the web 112 and the first support 111 (see FIG. 2).

Here, the second support 113 may have a relatively thinner thickness than the first support 111 so as to reduce the overall thickness of the filtering member 110. It can be laminated on one side.

Through this, the nanofiber web 112 is not directly attached to the first support 111 but is attached through the second support 113, thereby improving adhesion and making it easy to attach.

For example, the nanofiber web 112 may be attached to the first support 111 through the second support 113 through heat fusion, ultrasonic fusion, high-frequency fusion, etc.

At this time, part or all of the second support 113 may be melted and attached to the first support 111 during the attachment process.

To this end, the nanofiber web 112 may have a melting temperature higher than the process temperature performed in the fusion process so as not to melt due to heat, and the second support 113 may have a melting temperature higher than the process temperature performed in the fusion process. It can be provided to have a lower melting temperature.

Accordingly, the filtering member 110 may be implemented as a three-layer structure in which the second support 113 is completely melted, and only a part of the second support 113 is melted to form the nanofiber web 112 and the second support 113. It may be implemented as a five-layer structure in which the second support 113 remains between the first support 111. However, the structure of the filtering member 110 is not limited to this, and any form in which one or more support layers are interposed between two nanofiber webs 112 may be used.

In addition, the first support 111 and the second support 113 may be a porous substrate so as to serve as a passage through which the filtrate produced by the nanofiber web 112 moves.

For example, the first support 111 and/or the second support 113 may be any one of commonly used known fabrics, knitted fabrics, or non-woven fabrics, and the non-woven fabrics include chemical bonding non-woven fabrics, thermal bonding non-woven fabrics, and air bonding fabrics. Known nonwovens such as dry nonwoven fabric such as lay nonwoven fabric, wet nonwoven fabric, spanless nonwoven fabric, needle punched nonwoven fabric, or melt blown can be used, and the pore size, porosity, basis weight, etc. of the nonwoven fabric depend on the desired water permeability, filtration efficiency, and mechanical strength. Please note that it may vary depending on the situation.

In other words, the material of the first support 111 and/or the second support 113 is not limited, and for example, synthetic fibers selected from the group consisting of polyester, polypropylene, nylon, and polyethylene, or cellulose. Natural fibers containing the system can be used.

However, by improving the bonding strength with the nanofiber web 112, separation between the first support 111 and/or the second support 113 and the nanofiber web 112 is prevented during application of the water treatment process, and separate adhesion is prevented. In order to prevent problems such as a decrease in water permeability due to the use of components, the first support 111 and the second support 113 are made of low melting point polymer compounds such as known low melting point polyester and low melting point polyethylene that can be heat fused. It may include polyester-based low-melting point composite fibers with low-melting point polyester as the sheath and polyethylene terephthalate as the core, and/or polyolefin-based low-melting point composite fibers with low-melting point polyethylene as the sheath and polypropylene as the core. You can.

Here, the melting point of the low melting point polymer compound may be 60 to 180°C, and the thickness of the first support 111 may be 2 to 200 ㎛, but is not limited thereto.

Meanwhile, the second support 113 applied to the present invention may be made of a different material from the first support 111, but is made of the same material as the first support 111, so that the first support 113 is used in the lamination process. Adhesion with (111) can be increased.

The nanofiber web 112 is used to filter out foreign substances contained in the liquid to be filtered and may be formed using nanofibers. At this time, the nanofiber may contain a fiber-forming ingredient including polyacrylonitrile (PAN) and polyvinylidene fluoride (PVDF), and an emulsifier that improves the miscibility of the fiber-forming ingredient.

Here, the fiber-forming ingredient may include highly hydrophilic polyacrylonitrile (PAN, hereinafter referred to as PAN) and highly hydrophobic polyvinylidene fluoride (PVDF, hereinafter referred to as PVDF).

Due to the nature of the material, PVDF can ensure the mechanical strength and chemical resistance of nanofibers, and PAN has high hydrophilicity, preventing hydrophobization of nanofibers due to PVDF and improving the hydrophilicity of nanofibers, thereby adding nanofibers to the filtering member. When attached, improved water permeability can be achieved.

Meanwhile, the nanofiber web 112 may include a nanofiber web with a three-dimensional network structure. For example, nanofibers containing fiber-forming ingredients including polyacrylonitrile (PAN) and polyvinylidene fluoride (PVDF) and an emulsifier may be laminated perpendicular to the spinning surface, and air is released during spinning. Due to the solvent failing to volatilize/evaporate during the process, fusion may occur at the portion where the surfaces of the fibers meet among the laminated nanofibers, forming a three-dimensional network structure.

The nanofiber web 112 may be provided as a single layer or may be provided as a multi-layer.

At this time, the nanofiber web 112 applied to the present invention is provided to have a relatively larger area than the first support 111 and can be placed on both sides of the first support 111, respectively.

Specifically, the nanofiber web 112 includes a first part 112a disposed in an area corresponding to the first support 111 so as to cover one surface of the first support 111, and the first part 112a. It may include a second part 112b extending outward from the edge of 112a.

Here, the area of the second part 112b may be the remaining area after subtracting the area of the first part 112a from the total area of the nanofiber web 112 (see FIG. 7).

Accordingly, when a pair of nanofiber webs 112 are laminated on both sides of the first support 111, each nanofiber web 112 has a second layer surrounding the edge of the first portion 112a. The portion 112b may be disposed on one surface of the first support 111 so that the portion 112b protrudes outward from the edge of the first support 111 by a certain length. Because of this, the pair of second parts 112b facing each other can be spaced apart from each other by the thickness of the first support 111.

Through this, an accommodating space 125 defined by the width of the pair of second parts 112b facing each other and the thickness of the first support 111 can be formed, and the filtration is located on the accommodating space 125 side. A support frame may be inserted and placed to support the member 110 in the form of a flat plate.

Here, the width of the receiving space 125 may have the same width as the width of the frames 120a and 120b (see FIG. 4), and the insertion of the frames 120a and 120b into the receiving space 125 is smooth. To achieve this, the width of the accommodation space 125 may be formed to be relatively wider than the width of the frames 120a and 120b (see (a) of FIG. 8).

At this time, the second part 112b protruding outward from the edge of the first support 111 may be directly fixed to one surface of the support frame through heat fusion.

That is, in the present invention, a support frame for supporting the filtering member 110 is inserted into the receiving space 125 and then directly fixed to the filtering member 110 through heat fusion, thereby eliminating the need to use an adhesive member. .

To this end, the nanofiber web 112 may have a melting temperature similar to or lower than the process temperature performed in the fusion process so that at least part of the nanofiber web 112 can be melted by heat when heat fusion with the support frame, and the support frame It may be made of a polymer resin that has excellent thermal adhesion to the nanofiber web 112.

Through this, work productivity can be increased because the manual application process of the adhesive member is omitted, and since the support frame is inserted into the receiving space 125, it is possible to reduce the thickness and improve the degree of integration.

On the other hand, when the filtration member 110 according to the present invention is implemented in a four-layer or more structure in which at least one second support 113 is interposed between the first support 111 and the nanofiber web 112, the The second support 113 may also be provided to have a relatively larger area than the first support 111 and may be provided to have the same area as the nanofiber web 112.

For example, when the filtration member 110 is implemented as a five-layer structure in which the second support 113 and the nanofiber web 112 are sequentially stacked on both sides of the first support 111, the second support ( 113) may include a fixing part 113a extending from a plate-shaped body having a predetermined area and disposed in an area corresponding to the second part 112b of the nanofiber web 112.

At this time, one surface of the fixing part 113a may be joined to the second part 112b. Accordingly, the fixing part 113a can also protrude outward from the edge of the first support 111 like the second part 112b, and the width and width of the pair of fixing parts 113a facing each other are 1 An accommodation space 125 defined by the thickness of the support 111 may be formed.

Here, the area of the fixing part 113a may be the remaining area after subtracting the area of the fixing part 113a from the total area of the second support 113 (see FIG. 7).

Through this, a support frame for supporting the filtering member 110 in the form of a flat plate can be inserted and placed on the side of the receiving space 125, and a fixing part protruding outward from the edge of the first support 111 ( 113a) can be directly fixed to one surface of the support frame through heat fusion.

In this way, when at least one second support 113 is interposed between the nanofiber web 112 and the first support 111, the nanofiber web 112 and the second support 113 are a support frame. It may have a melting temperature similar to or lower than the process temperature performed in the fusion process so that at least part of it is melted by heat during heat fusion, and the support frame has a bonding force due to heat with the second support 113. It can be made of excellent polymer resin.

As described above, the support frame is inserted into the receiving space 125 and coupled to the edge of the first support 111, thereby allowing the filtering member 110 to maintain its plate-shaped shape.

Such a support frame may be made of one member to entirely or partially support the edge side of the filtering member 110, but a plurality of frames (120a, 120b) may be provided on the edge side of the first support member 111. Each may be combined (see Figure 2).

For example, the plurality of frames 120a and 120b may be arranged on the edge side of the first support 111 so that one end is in contact with the other end, and the plurality of frames 120a and 120b may be placed on the edge side of the filtering member 110. End sides of two adjacent frames 120a and 120b may be connected to each other through connecting members 130 and 130' disposed in (see FIG. 10).

However, the shape of the support frame is not limited to this, and depending on the shape of the filtering member 110, it can be changed into a circular shape, an arc shape, a polygon, or various combinations thereof, and a shape that entirely surrounds the edge of the filtering member. I would like to state that ramen can take any form.

At this time, the support frame serves to support the filtration member 110 in a plate-like shape and moves the filtered water produced by the nanofiber web 112 toward the receiving port 133 through suction force provided from the outside. It can play the role of a flow path.

For this purpose, each frame (120a, 120b) constituting the support frame may be provided in an approximately 'ㄷ' shape with one side open, and a channel through which the filtrated water flowing in from the filtering member 110 moves inside. (123) can be formed (see Figure 2).

Specifically, the plurality of frames 120a and 120b include a plate-shaped first plate 121 and a pair of frames each extending from the first plate 121 in a direction perpendicular to the first plate 121. It may include second plates (122a, 122b), and the flow path 123 is formed along the longitudinal direction of the frames (120a, 120b) between a pair of second plates (122a, 122b) facing each other. (see Figure 4).

Accordingly, the frames 120a and 120b inserted into the receiving space 125 have the outer surfaces of the second plates 122a and 122b formed as the second portion 112b of the nanofiber web 112, as described above. Alternatively, it can be integrated with the filtering member 110 by being fixed to the fixing part 113a of the second support 113 through heat fusion.

Here, the flow path 123 may include a first flow path 123a and a second flow path 123b, and the first flow path 123a includes a pair of second plates 122a and 122b facing each other, and It may be a space defined by the first plate 121, and the second flow passage 123b is defined by an opening of a pair of second plates 122a and 122b and frames 120a and 120b facing each other. It may be a space (see Figure 4).

Through this, the second flow path (123b) can serve as a movement path that moves the filtered water flowing in from the filtering member 110 toward the first flow path (123a), and the first flow path (123a) It can serve as a main flow path in which filtered water flowing in through the second flow path 123b is collected and then moves toward the receiving port 133 (see FIG. 11).

Here, the first flow path (123a) and the second flow path (123b) are formed with a stepped surface on the inner surfaces of the second plates (122a, 122b), so that the first flow path (123a) and the second flow path (123b) are connected to each other. They can be distinguished, and the gap between the second plates defining the first flow passage 123a may be relatively larger than the gap between the second plates defining the second flow passage 123b. However, the shape of the passage 123 is not limited to this, and the inner surfaces of the second plates 122a and 122b are formed as horizontal surfaces between the second plates 122a and 122b that define the first passage 123a. The gap between the second plates 122a and 122b defining the second flow path 123b may be the same size.

Meanwhile, at least one protrusion 124 protruding outward at a certain length may be formed on the free end side of the pair of second plates 122a and 122b (see FIGS. 2 and 4).

That is, the protrusions 124 may be formed to protrude on end sides of the second plates 122a and 122b along the longitudinal direction of the second plates 122a and 122b, and may be accommodated by the frames 120a and 120b. When inserted into the space 125, it may be driven into the edge end of the first support 111 by external force.

Through this, the frames (120a, 120b) and the first support (111) are temporarily fixed, so that during the fixing operation between the second part (112b) or the fixing part (113a) and the frames (120a, 120b) through heat fusion, the frame It is possible to prevent the positions of (120a, 120b) from being distorted.

In the present invention, the frames 120a and 120b are inserted and placed on the receiving space 125 side as described above and then connected to the second portion 112b or the second support 113 of the nanofiber web 112. At least a portion of the fixing portion 113a may be fixed to the filtering member 110 by melting through heat fusion.

Meanwhile, the flat filter 100 for water treatment according to the present invention may include connecting members 130 and 130' coupled to the corner sides of the support frame.

A plurality of such connecting members 130 and 130' may be provided, and may be coupled to the corners of the support frame to fix the ends of the two adjacent frames 120a and 120b.

Here, the connecting members 130 and 130' may be directly coupled to the frames 120a and 120b disposed on the edge side of the first support 111, and the outer surfaces of the frames 120a and 120b may be formed using a nanofiber web. It may be combined to cover the outer surface of the nanofiber web 112 in a state covered by 112 (see FIGS. 5 and 6).

To this end, the connecting members 130 and 130' may include a body 131 with one side open so that end sides of adjacent frames 120a and 120b can be inserted (see FIG. 10).

Accordingly, among the plurality of frames 120a and 120b constituting the support frame, the end sides of the two adjacent frames 120a and 120b are inserted into the body 131, respectively. can be fixed by

For example, the end of one of the two frames 120a and 120b adjacent to each other is inserted into the first direction of the body 131, and the end of the other frame 120b is inserted into the body 131. It may be inserted in the second direction of 131 and placed in contact with the end of the frame 120a inserted in the first direction (see FIG. 11).

At this time, the flow path 123 formed in the frame 120a inserted in the first direction and the flow path 123 formed in the frame 120b inserted in the second direction are arranged to communicate with each other, thereby forming a plurality of frames 120a and 120b. ), all of the channels formed in each can be communicated.

Here, the first direction and the second direction may be directions perpendicular to each other on the same plane, or may be directions inclined to have a predetermined angle with respect to a straight line on the same plane.

Meanwhile, the flat filter 100 for water treatment according to the present invention is provided with a spacing adjuster 134 so that each filter member 110 can be spaced apart when a plurality of filters are arranged in parallel with each other. It can be.

The spacing adjuster 134 may be provided on at least one of the plurality of frames 120a and 120b constituting the support frame, and may be provided on at least one of the connecting members 130 and 130'. .

For example, the spacing adjuster 134 may include an extension plate 134a and a spacer 134c having a fastening hole 134b, and may be formed on one side of the connecting members 130 and 130'.

Specifically, the extension plate 134a may extend outward from the body 131 of the connecting members 130 and 130', and a fastening hole 134b through which the fastening bar 240 passes may be formed through ( 9).

Here, in the drawing, the fastening hole 134b is shown as penetrating the extension plate 134a in a circular shape, but it is not limited thereto and may have a shape corresponding to the cross-sectional shape of the fastening bar 240. For example, the fastening hole 134b may be formed in a circular shape, an arc shape, a polygonal cross-section, or a combination thereof.

At this time, the spacing member 134c may protrude from one surface of the extension plate 134a to a certain height to have a predetermined thickness, and the spacing member 134c may entirely surround or partially surround the edge of the fastening hole 134b. It may be provided to surround.

Here, the spacing member 134c may be formed on both sides of the extension plate 134a, or may be formed on only one side of the extension plate 134a, and may have different heights from one side of the extension plate 134a. It may be formed as a multi-stage structure with .

Here, the spacing between the plurality of filtering members 110 arranged in parallel to each other may be arranged to have a spacing of 3 mm or more, but is not limited thereto, and the height or thickness of the spacing member 134c can be appropriately changed to allow various spacings. It can be arranged to have.

Through this, when a plurality of flat filters 100 are connected to each other through the fastening bar 240, even if each flat filter 100 is completely brought into close contact with each other, the filtering members 110 arranged in parallel to each other are not connected to each other through the fastening bar 240. They can be spaced apart through (134c).

Accordingly, after arranging the plurality of flat filters 100 in parallel, fastening the fastening bar 240 so as to pass through each fastening hole 134b, and bringing each flat filter 100 into close contact with each other, Each filtering member 110 disposed adjacently may be spaced apart at a predetermined interval through the spacing member 134c (see FIG. 14).

That is, when configuring the flat filter module 200 using a plurality of flat filters 100, when each flat filter 100 connected to the fastening bar 240 is brought into close contact with each other, the operator must individually filter the flat filter module 200. Even if the gap between them is not adjusted, a uniform gap can be formed between the filtering members 110 by the spacing member 134c, and when fixing members such as nuts are fastened to both sides of the fastening bar 240, each The gap formed between the filtering members 110 can be maintained.

For this reason, the flat filter module 200 may have a liquid to be filtered on both sides of each filtration member 110, so that the filtration member 110 can be filtered on both sides of the filtration member 110 by suction force provided from the outside. It can move to the inside and produce filtered water.

In addition, when backwashing is performed to remove foreign substances attached to the filtering member 110 after repeated production of filtered water is performed, the filtering member 110 is exposed to the pressure of a fluid such as washing water supplied from the outside. ) may fall into the space between neighboring filtering members 110 after they are separated.

Meanwhile, at least one of the connecting members 130 and 130' has a receiving port 133 for discharging the filtered water moved along the flow path 123 formed in each frame 120a and 120b to the outside. may be provided.

That is, among the plurality of connecting members 130 and 130' coupled to the corners of the support frame, the connecting member 130' on which the receiving port 133 is not formed only serves to connect a pair of adjacent frames. On the other hand, the connecting member 130 on which the receiving port 133 is formed can also serve as an outlet that discharges the filtered water produced through the receiving port 133 to the outside (see FIGS. 1 and 2).

Here, the receiving port 133 may be provided on only one of the plurality of connecting members, but it is preferable that it be provided on each of the two connecting members 130 to provide equal suction pressure to the filtering member 110. .

In addition, the receiving port 133 may be formed integrally with the body 131 of the connecting member 130 (see FIG. 10), but a coupling hole 131a is formed in the body 131 of the connecting member 130. It should be noted that a receiving port 133 having a predetermined length may be detachably coupled to the coupling hole 131a (see FIG. 12).

At this time, the connecting member 130 on which the receiving port 133 is formed has flow paths 123 formed in each of the two adjacent frames 120a and 120b when combined with the two frames 120a and 120b. A communicating collection space 132 may be formed, and the collection space 132 may be formed at a location in communication with the receiving port 133.

For example, the collection space 132 includes two frames (120a, 120a, It can be formed at the end side of 120b), and the collection space 132 can be formed by cutting the end of one of the two frames 120b inserted into the connecting member 130 so that they do not fit together. (See Figure 11).

Accordingly, the filtrated water moving along the flow path 123 formed in one of the two frames 120a and 120b and the flow path 123 formed in the other frame 120a and 120b are mixed. The filtered water that moves along meets each other in the collection space 132 and can be discharged to the outside through the receiving port 133 connected to the collection space 132 (see FIG. 11).

As a result, the filtered water from which foreign substances have been filtered moves inside the filtering member 110 by the suction force provided from the pump (not shown), and flows into each flow path 123 formed in the plurality of frames 120a and 120b. After moving toward the collection space 132 along the flow path 123, it can be discharged to the outside through the receiving port 133.

On the contrary, in the backwashing process, fluid such as washing water provided from the outside flows in through the receiving port 133 and then passes through the collection space 132 toward each flow path 123 formed in the plurality of frames 120a and 120b. can be supplied.

Meanwhile, the above-described flat filter for water treatment 100 may be configured as a single modular flat filter module 200 for water treatment by arranging a plurality of them in parallel and fastening them to each other via a fastening bar 240.

For example, the flat filter module 200 for water treatment may include the above-described flat filter 100 for water treatment, a fixed frame 220, and a common receiving member 230, as shown in FIG. 13.

The flat filter 100 for water treatment may include a filtration member 110, a support frame, and a receiving space 127, and foreign substances are filtered out while the liquid to be filtered flows into the filtration member 110. It is used to produce filtered water.

A plurality of such flat filters 100 for water treatment may be arranged parallel to each other, and since the specific contents are the same as those described above, detailed descriptions will be omitted.

The fixing frame 220 is for fixing a plurality of flat filters 100 for water treatment arranged in parallel with each other.

This fixed frame 220 may be made of a plate-shaped member, but may be provided as a frame structure so that the filtration liquid can flow into the plurality of plate-shaped filters 100.

For example, the fixing frame 220 includes a front frame 221 and a rear frame ( 222), and both ends of the fastening bar 240 for interconnecting the plurality of flat filters 100 may be coupled to the front frame 221 and the rear frame 222, respectively. (See Figure 14).

Here, the front frame 221 and the rear frame 222 are provided with a fastening hole (not shown) into which the end side of the fastening bar 240 is inserted, so that it can be inserted in a fitting manner, and the front frame 221 And a through hole (not shown) penetrating the rear frame 222 may be provided so that both ends of the fastening bar 240 pass through and be fixed through a separate fixing member.

At this time, a separate handle 223 may be provided on one side of the fixing frame 220 so that a user or worker can easily attach the modularized flat filter module 200.

In addition, each member constituting the front frame 221 and the rear frame 222 may be a plate-shaped bar with a predetermined width and length, an 'I' beam, or an 'ㄱ' beam, or may be in the form of a square pipe. It may be provided.

In this way, the flat filter module 200 for water treatment according to the present invention may have a plurality of flat filters 100 arranged in parallel with each other, and the filtration member 110 provided in each flat filter 100 They can be arranged to be spaced apart at a predetermined interval through the spacing member 134c.

Accordingly, the suction force provided from the outside, for example, the suction force provided from one pump (not shown), is transmitted to the plurality of flat filters 100 through each receiving port 133, thereby forming a plurality of flat filters in one process. Filtered water can be produced individually in the type filter 100.

As a result, filtered water can be produced in large quantities at the same time through a plurality of plate-type filters 100, and the production efficiency of filtered water can be increased.

On the other hand, when the flat filter module 200 for water treatment according to the present invention is provided with a plurality of flat filters 100, it simultaneously exerts suction power toward the receiving port 133 provided in each flat filter 100. A common receiving member 230 may be provided to provide and integrate the filtered water produced by each plate-type filter 100 into one (see FIG. 14).

That is, the common receiving member 230 is connected to each receiving port 133 via a tube 250, so that the suction force provided from the outside is transmitted to each flat filter 100 through the common receiving member 230. is transmitted to the side, and the filtrated water is individually produced in each flat filter 100 through the transmitted suction force, and the filtrated water produced by each flat filter 100 is supplied to the collection space 132 and the receiver by the suction force. It can be integrated to the common receiving member (230) via (133).

Such a common receiving member 230 may be provided as one, but when each flat filter 100 is provided with two receiving ports 133, it is provided in two pieces to correspond to the number of receiving ports 133. It can be connected one-to-one with each receiving port 133.

To this end, the common receiving member 230 includes a main body 231 having an inlet 232 connected to each receiving port 133 and a tube 250, and each plate-type filter 100. It includes an outlet 233 that discharges the filtered water flowing into the main body 231 to the outside or provides a suction force provided from the outside to the receiver 133.

The main body 231 may have a storage space 234 formed so that filtrated water flowing in from the receivers 133 provided in each flat filter 100 can temporarily collect.

The inlet 232 is connected to the receiver 133 and serves to introduce filtered water discharged from the receiver 133 into the storage space 234 of the main body 231.

At this time, the inlet 232 may be provided in plural pieces so that each can be connected to a plurality of receivers 133, and the plurality of inlets 232 may be connected to the plurality of receivers 133 in a one-to-one match. You can.

Here, the plurality of inlets 232 may be connected one to one through the receiving port 133 and the tube 250, but in a form in which the plurality of receiving ports 133 are directly connected to the common receiving member 230. It may be.

Meanwhile, when the inlet 232 and the receiving port 133 are connected via a tube, the common receiving member 230 may be arranged to be located in the middle of the length of the fixed frame 220.

This is to prevent the tube 250 from bending during the process of connecting the tube 250 and interfering with the flow of filtered water when the gap between the receiver 133 and the inlet 232 is too narrow.

The outlet 233 may serve to discharge the filtered water flowing into the storage space 234 through the inlet 232 to the outside, for example, to a filtered water storage tank (not shown).

The flat filter module 200 for water treatment according to the present invention may be applied to a known wastewater treatment system.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiment presented in the present specification, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , other embodiments can be easily proposed by change, deletion, addition, etc., but this will also be said to be within the scope of the present invention.

100: Flat filter for water treatment 110: Filtration member
111: first support 112: nanofiber web
112a: first part 112b: second part
113: second support 113a: fixing part
120a,120b: frame
121: 1st edition 122a,122b: 2nd edition
123: Euro 123a: Euro 1
123b: Second flow path 124: Protrusion
125: Accommodating space 130,130': Connecting member
131: body 132: collection space
133: Receiving port 134: Spacing adjustment port
134a: Extension plate 134b: Fastening hole
134c: Separation member 200: Flat filter module for water treatment
220: fixed frame 221: front frame
222: Rear frame 223: Handle
230: Common receiving member 231: Main body
232: inlet 233: outlet
234: storage space 240: fastening bar
250: tube

Claims (15)

A filtration member including a plate-shaped first support having a predetermined area, and a pair of nanofiber webs each formed of nanofibers on both sides of the first support; and
A support frame disposed to surround the edge of the first support and having a flow path formed along the longitudinal direction to allow fluid flowing in from the first support to move,
The pair of nanofiber webs includes a first part disposed in an area corresponding to the first support, and a second part extending from the edge of the first part so as to protrude outward from the edge of the first support by a certain length. Contains parts,
The support frame is provided to have a width equal to or smaller than the thickness of the first support and is positioned between a pair of second parts facing each other,
A flat filter for water treatment wherein the pair of second parts are respectively fixed to both sides of the support frame through heat fusion. delete According to clause 1,
The filtration member is a flat filter for water treatment including a second support interposed between the nanofiber web and the first support. According to clause 3,
The second support includes a fixing part disposed in an area corresponding to the second part, and one side of the nanofiber web and the support frame are respectively fixed to both sides of the fixing part. According to clause 4,
A flat filter for water treatment in which the second part and the fixing part are at least partially melted by heat. According to clause 1,
The support frame includes a plurality of frames,
The flow path is a flat filter for water treatment formed in each of the plurality of frames. According to clause 6,
The plurality of frames include a first plate and a pair of second plates each extending from both ends of the first plate, and the flow path is a space formed between the first plate and the pair of second plates. For flat filter. According to clause 7,
A flat filter for water treatment in which at least one protrusion having a predetermined length is formed on an end side of the second plate so that it can be embedded into the end side of the first support. According to clause 1,
It includes a plurality of connecting members coupled to the corners of the support frame,
A flat filter for water treatment, wherein at least one of the plurality of connecting members is provided with a spacing adjuster for adjusting the spacing between neighboring filtering members. According to clause 9,
The connecting member is,
A body coupled to a corner of the support frame; and
A flat filter for water treatment comprising a spacing adjuster having a fastening hole through which a fastening bar having a predetermined length passes. According to clause 10,
The spacing adjuster is a water treatment device that includes a spacing member that protrudes at a predetermined height on at least one side of the extension plate to adjust the gap between an extension plate extending from the body and through which the fastening hole is formed, and a filtering member disposed in parallel with each other. For flat filter. According to clause 9,
A flat filter for water treatment, wherein at least one of the connecting members includes a receiving port for discharging filtered water flowing into a passage formed in the support frame to the outside. A plurality of flat filters for water treatment arranged in parallel to each other and including at least one receiving port through which filtered water filtered through the filtering member is discharged;
A fixing frame fixing the plurality of flat filters for water treatment via at least one fastening bar; and
At least one common receiving member connected to a one-to-one match with the receiving port provided in each of the flat filters for water treatment to collect the filtrated water discharged from each receiving port;
A flat filter module for water treatment, wherein each of the plurality of flat filters for water treatment is a flat filter for water treatment according to any one of claims 1, 3 to 12. Preparing a filtration member including a first support having a predetermined area and a pair of nanofiber webs formed on both sides of the first support, respectively; and
Arranging a plurality of frames with a flow path formed therein to surround an edge of the first support, and fixing the filtering member and the plurality of frames to each other,
The pair of nanofiber webs are provided to have a relatively larger area than the first support and include a portion that protrudes outward from the edge of the first support by a certain length,
Each of the plurality of frames is provided to have a width equal to the thickness of the first support or a width smaller than the thickness of the first support, and is provided between portions that face each other and protrude a certain length outward from the edge of the first support. It is placed so that
A method of manufacturing a flat filter for water treatment, wherein the pair of nanofiber webs is fixed to both sides of the frame through heat fusion in which portions that protrude outward from the edge of the first support by a certain length are fixed to each side. According to clause 14,
A second support having a relatively larger area than the first support is interposed on one side of the nanofiber web, and the edge side of the nanofiber web is fixed to both sides of the frame through heat fusion through the second support. Method of manufacturing a flat filter for water treatment.

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