JP4271066B2 - Filtration device and header for filtration device - Google Patents

Description

  The present invention relates to a filtration device and a header for a filtration device that can be suitably used for liquid treatment such as water treatment, and particularly to a filtration device and a filtration device header in which a plurality of filters are integrated with a simple structure. .

  In recent years, in addition to the global water shortage, problems of pathogenic microorganisms such as Cryptosporidium and O-157 have become serious, and a water purification process that can easily produce high-quality water with high safety is required. ing. Microfiltration (MF) and ultrafiltration (UF) using a filter element that uses a porous material as a filter medium are toxic substances such as suspended substances and pathogenic microorganisms in a liquid by a simple operation. It is attracting attention as a water purification process that can effectively remove water. As filter elements used for microfiltration and ultrafiltration, a filter element having a partition made of a porous material such as resin or ceramic, and having a cell forming a liquid flow path by the partition is generally used. ing.

  For example, a hollow fiber membrane filter is a filter element in which a plurality of hollow fibers are used as a filter medium, and has a capillary-shaped partition wall made of a porous resin, and a cell penetrating the central portion is formed by the partition wall. It has a structured. In this structure, when the liquid to be treated (raw solution) is supplied to the outside of the hollow fiber at a predetermined pressure, the liquid flows through the partition made of porous resin and flows into the cell penetrating the center of the hollow fiber. At this time, harmful substances such as suspended substances and pathogenic microorganisms are removed in the partition wall, and the liquid flowing into the cell can be recovered as a purified treated liquid (filtrate). That is, in the hollow fiber membrane filter, the cell formed by the partition is used as a filtrate flow path for circulating the filtrate.

  A monolithic filter 2 shown in FIG. 1 is a filter element in which a large number of cells 3 are formed so that the flow direction of liquid is parallel using a ceramic porous body as a filter medium. The filter element has a lattice-shaped partition wall made of a ceramic porous body, and has a honeycomb structure in which a large number of cells 3 divided by the partition wall are formed. In this structure, when a liquid to be treated (raw solution) is supplied to the inside of a large number of cells 3 at a predetermined pressure, the liquid passes through the partition walls made of a ceramic porous body and flows out of the cells. At this time, harmful substances such as suspended substances and pathogenic microorganisms are removed in the partition wall, and the liquid flowing out of the cell and thus outside the monolith can be recovered as a purified treated liquid (filtrate). That is, in the monolithic filter 2 shown in FIG. 1, the cell 3 formed by the partition is used as a stock solution flow path for circulating the stock solution.

  When the above filter element is used for microfiltration or ultrafiltration, the filter element is often used in the form of a filter housed in a casing. The above filter elements have a structure in which the stock solution flow path and the filtrate flow path are separated by a partition, although there is a difference between using the cell as a filtrate flow path or as a stock flow path. Yes. Therefore, the filtrate element is separated and recovered by housing the filter element in the casing and having a structure in which the raw liquid flow path and the filtrate flow path are separated liquid-tightly by a sealing material such as an O-ring. Is possible. Usually, in such a filter, the filter element is accommodated in the casing so that the liquid flows in the vertical direction.

The filter as described above has a filtration function by itself, but in a large-scale facility such as a water purification plant or a factory that is required to process a large amount of undiluted solution, the filtration area, and hence unit time / unit. In order to increase the water permeation amount per filtration area (hereinafter simply referred to as “water permeation amount”) and to improve the processing capacity, a large number of filters are used as a filtration device connected to each other by piping. Is common. For example, a filtering device having a structure in which a large number of filters are connected by a header pipe is known (for example, see Patent Document 1).
JP 2003-334429 A

  The present invention has a simpler structure, a filtering device including a filter module in which a plurality of filters are aggregated, and a plurality of filters can be easily aligned when manufacturing such a filter module. The present invention provides a header for a filter device that can be used.

  The present invention provides the following filtration device and filtration device header.

  [1] A plurality of filters, a raw solution supply header that supplies a liquid to be processed (raw solution) to the plurality of filters, and a filtrate recovery header that recovers a processed liquid (filtrate) from the plurality of filters. A filtering device having at least one filter module, wherein at least one of the stock solution supply header and the filtrate recovery header is fitted into the opening having a tube wall with an opening, and penetrates in the thickness direction. And a header plate having a plurality of opening holes, wherein the plurality of filters are connected to the plurality of opening holes of the header plate.

  [2] The filtration device according to [1], wherein the plurality of opening holes of the header plate are arranged side by side in the longitudinal direction of the header pipe.

  [3] The [1] or [2] according to [1] or [2], wherein the header plate has a through hole penetrating from a side surface of one opening hole located on an end side in the longitudinal direction of the header pipe to an end surface in the longitudinal direction. Filtration device.

  [4] The filtration device according to any one of [1] to [3], wherein the stock solution supply header includes the header pipe and the header plate, and is disposed below the filter.

  [5] The filter includes a casing having a stock solution supply port and a filtrate delivery port, and a filter element that is housed in the casing and has a porous partition wall that forms a cell serving as a liquid flow path. The filtration device according to [4], wherein a supply port and the opening hole are connected.

  [6] The filtration device according to any one of [1] to [5], wherein the filter module includes a stock solution recovery header connected to a filter.

  [7] The filtration device according to any one of [1] to [6], wherein the filtration device includes a plurality of the filter modules.

  [8] A header for a filtration device that supplies a liquid to be treated (raw solution) to a plurality of filters or collects a treated liquid (filtrate) from the plurality of filters, and includes a header pipe having an opening on a tube wall; A header for a filtration device, comprising: a header plate that is fitted in the opening and has a plurality of opening holes for connection with a filter.

  [9] The filtration device header according to [8], wherein the plurality of opening holes of the header plate are arranged side by side in a longitudinal direction of the header pipe.

  [10] The filtration device header according to [9], wherein the plurality of opening holes of the header plate are arranged in a line.

  [11] Any one of [8] to [10], wherein the header plate has a through hole penetrating from a side surface of one opening hole located at an end portion in the longitudinal direction of the header pipe to an end surface in the longitudinal direction. The header for filtration apparatus of description.

  Since the filtering device of the present invention includes the filtering device header as described above, the filtering device can be disposed at an accurate position and angle by connecting a plurality of filtering devices to the header. In addition, since this header has a simple structure, a filtering device can be manufactured at low cost.

  Hereinafter, the best mode for carrying out the present invention (hereinafter, also referred to as “embodiment”) will be specifically described with reference to the drawings. However, the present invention is not limited to the following embodiment. It should be understood that modifications, improvements, and the like can be made as appropriate based on the ordinary knowledge of those skilled in the art without departing from the spirit of the present invention.

  2 (a) and 2 (b) are diagrams schematically showing an embodiment of the filtration device of the present invention, FIG. 2 (a) is a schematic front view, and FIG. 2 (b) is a schematic diagram. FIG. FIG. 3A is a schematic perspective view showing an embodiment of a header pipe according to the present invention, and FIG. 3B is a schematic perspective view showing an embodiment of a header plate according to the present invention. . Fig.4 (a)-FIG.4 (c) are the figures which show typically one Embodiment of the header for filtration apparatuses which concerns on this invention, Fig.4 (a) is typical top view, FIG.4 (b) ) Is a schematic front view, and FIG. 4C is a schematic side view.

  2A and 2B includes at least one filter module 40 including a plurality of filters 12, a stock solution supply header 20, and a filtrate collection header 30. And the stock solution supply header 20 is provided with the header pipe | tube 21 and the header board 25, as shown to Fig.3 (a) and FIG.3 (b).

  The header tube 21 has an opening 23 in the tube wall 22. The header plate 25 has a plurality of opening holes 26 penetrating in the thickness direction. Then, as shown in FIGS. 4A to 4C, the header plate 25 is fitted into the opening 23 of the header pipe 21. Further, as shown in FIGS. 2A and 2B, the plurality of filters 12 are connected to the plurality of opening holes 26 of the header plate 25.

  By adopting a structure in which a plurality of filters are connected to the tube wall of the tubular header, the structure can be simplified as compared with a conventional filtering device. Furthermore, by fitting a plate-like body to the tube wall and providing an opening hole for connecting the filter to the plate-like body, processing becomes easy and alignment of the connecting positions of a plurality of filters becomes easy. Become.

  Furthermore, as shown in FIG. 2 (a), the filter 12 is often long in one direction, so that a slight shift in the installation angle at one end may cause a large positional shift at the other end. . Even in this case, by providing an opening hole in the plate-like body and connecting the filter there, the filter can be installed at an accurate angle, and the displacement at the other end of the filter can be suppressed. Can do. 2A and 2B show the embodiment in which the stock solution supply header 20 includes the header pipe 21 and the header plate 25 described above, the filtrate recovery header may have such a structure.

  The filter 12 is preferably arranged in the longitudinal direction of the header pipe 21 from the viewpoint of simplification of the structure and space saving, and is arranged in a line in the longitudinal direction of one header pipe. Is more preferable. Therefore, the opening holes 26 of the header plate 25 are preferably provided so as to be aligned in the longitudinal direction of the header tube 21, and more preferably provided so as to be aligned in a row.

  There is no restriction | limiting in particular in the method of fitting the header board 25 to the header pipe | tube 21, It can fit easily by methods, such as welding. Moreover, when connecting the header pipe | tube 21 to piping, it is preferable to connect by the flange 34. FIG. Accordingly, the header tube 21 is preferably provided with a flange 34 at one or both ends. For this purpose, the header tube 21 is preferably in a tube shape rather than a trough shape, and the end portion is preferably a complete tube shape without an opening. The material of the header tube 21 and the header plate 25 is not particularly limited, but stainless steel or the like is preferably used.

  Although there is no restriction | limiting in particular in the magnitude | size of a header pipe | tube, it is practically preferable to set it as the range whose diameter is 200-400 mm and length is about 800-3400 mm. Although there is no restriction | limiting in particular also in the magnitude | size of a header board, it is practically preferable to set length to about 500-3100mm, width to 200-300mm, and thickness to about 20-40mm.

  5A and 5B are diagrams schematically showing another embodiment of the header plate according to the present invention. FIG. 5A is a schematic perspective view, and FIG. ) Is a schematic cross-sectional view. FIG. 6 is a schematic cross-sectional view showing another embodiment of the header for a filtration device according to the present invention. As shown in FIG. 5A, FIG. 5B, and FIG. 6, the header plate 25 has an end surface 29 in the same direction from the side surface 28 of the opening hole 26 located on the end side in the longitudinal direction of the header tube 21. It is also preferable to have a through hole 27 penetrating to the end.

  When the header plate 25 is fitted into the tubular header tube 21, as shown in FIG. 6, an air pool is formed in the space 24 between the end surface 29 of the header plate and the end surface 31 of the header tube. Problems such as pressure decay and generation of bacteria may occur. In such a case, a hole for venting air may be provided in the header pipe 21, but piping and a valve for venting air are required, and the structure of the filter module becomes complicated. Therefore, by providing the through hole 27, the liquid can flow from the opening hole 26 through the through hole 27, and the formation of the air reservoir can be suppressed with a simple structure, or the formed air reservoir can be prevented. Air can be easily removed. In addition, although the example which provided the through-hole 27 in one edge part of a header board was shown in FIG. 6, you may provide a through-hole also in the edge part on the opposite side as needed.

  Further, as shown in FIGS. 2A and 2B, the filter module 40 preferably includes a stock solution recovery header 33. When the filter 12 has a stock solution discharge port, the stock solution collection header 33 is connected to the stock solution discharge port and used to collect the discharged stock solution. Moreover, it can utilize suitably also when supplying the compressed air for backwashing to the filter 12. FIG. This stock solution recovery header 33 is normally connected to the stock solution outlet 35 of the filter 12.

  In the filtering device of the present invention, the number of filters provided in one filter module is not particularly limited as long as it is 2 or more, and can be arbitrarily selected according to the required water permeability and the installation space. However, the configuration of the present invention is more effective when the number of filters included in one filter module is large. Therefore, the number of filters included in one filter module is preferably 3 or more, more preferably 5 or more, and particularly preferably 7 or more. On the other hand, if the number of filters is too large, it becomes impractical. Therefore, the number of filters included in one filter module is preferably 15 or less.

  It is also preferable to connect a plurality of filter modules according to the required water permeability and the installation space. For example, it is also preferable that a plurality of filter modules 40 as shown in FIG. 2 are arranged in parallel and connected by piping.

  The filter is not particularly limited as long as it can filter a liquid, and a filter having an optimal shape and structure can be appropriately selected according to the purpose. However, the effect of the present invention becomes more remarkable when the shape of the filter is long in one direction and is large. Therefore, it is preferable to apply the configuration of the present invention when the length of the filter is 500 mm or more, further 1000 mm or more, particularly 1500 mm or more. On the other hand, if the length is too long, it becomes impractical. Therefore, the length of the filter is preferably 2000 mm or less. Moreover, it is practically preferable that the width | variety of a filter is 50-300 mm.

  FIG. 7 is a schematic cross-sectional view showing an embodiment of a filter according to the present invention. A specific example of a preferable structure of the filter includes a filter 100 including a casing 102 and a filter element 104, as shown in FIG.

  The filter element preferably has a partition wall made of a porous material, and a cell serving as a liquid flow path is formed by the partition wall. According to such a filter element, when the stock solution permeates the partition wall and flows into the cell, or when the stock solution permeates the partition wall and flows out of the cell, suspended matter, pathogenic microorganisms, etc. The harmful substances are removed and the liquid flowing into the cell can be recovered as a purified treated liquid (filtrate) from the liquid flowing out of the cell.

  Although there is no restriction | limiting in particular about the material which comprises a filter element, Generally, the filter element comprised by resin or ceramic is generally used.

  Examples of the resin constituting the filter element include polypropylene (PP), polyethylene (PE), polyacrylonitrile (PAN), cellulose acetate (CA), polysulfone (PS), polyethersulfone (PES), or polyvinylidene fluoride ( PVDF) or the like is used. Among these, polyvinylidene fluoride, which has high durability against cleaning chemicals such as hydrogen peroxide and hypochlorous acid, is preferably used.

As the ceramic constituting the filter element, for example, alumina (Al ₂ O ₃ ), titania (TiO ₂ ), mullite (Al ₂ O ₃ · SiO ₂ ), zirconia (ZrO ₂ ), or the like is used. Among these, alumina is preferably used because it is easy to obtain a raw material with a controlled particle size, can form a stable slurry, and has high corrosion resistance. Ceramics are highly reliable due to their excellent mechanical strength and durability, and have high corrosion resistance, so there is little deterioration during chemical cleaning with acids, alkalis, etc. In addition, precise control of the average pore diameter that determines filtration capacity Has various advantages such as being possible. Therefore, it can be said that the material constituting the filter element is preferably ceramic rather than resin.

  A typical example of the resin filter element is a hollow fiber membrane filter. The hollow fiber membrane filter is a filter element in which a plurality of hollow fibers are used as a filter medium, and has a capillary-shaped partition wall made of a porous resin, and a cell penetrating the center portion is formed by the partition wall. It has a structure. As such a hollow fiber membrane filter, a filter formed in a columnar shape as a whole is often used.

  As a filter element made from ceramic, a tube-shaped filter and a monolithic filter can be mentioned as a typical example. The tubular filter has a cylindrical partition wall made of a ceramic porous body, and has a structure in which a single cell penetrating the central portion, which is divided by the partition wall, is formed. On the other hand, the monolithic filter has a honeycomb structure having partition walls made of a ceramic porous body and in which a large number of cells divided by the partition walls are formed. Among them, a monolithic filter having a large filtration area per unit volume and high processing capability is preferably used.

  The tubular filter and the monolithic filter are composed of a base material made of a ceramic porous body and a filtration membrane made of a ceramic porous body formed on the surface of the base material and having an average pore diameter smaller than that of the base material. A thing can be used suitably.

  In such a structure, since the filtration function is exhibited exclusively by the filtration membrane, the average pore diameter of the substrate can be increased. Therefore, it is possible to reduce the flow resistance when the liquid that has permeated through the partition walls and has flowed out of the cell permeates the inside of the base material, and the amount of water permeation can be increased.

  The average pore size of the ceramic porous body constituting the filtration membrane varies depending on the required filtration performance (particle size of the substance to be removed), but in the case of a filter element used for microfiltration or ultrafiltration, it is 0. About 0.01 to 1.0 μm. On the other hand, the average pore diameter of the ceramic porous body constituting the substrate is determined in consideration of the balance between mechanical strength and water permeability. Usually, a ceramic porous body having an average pore diameter of about 1 to several hundred μm is used as the substrate.

  The base material can be obtained by a method of forming a clay containing aggregate particles, drying and firing, and the filtration membrane is formed by forming a slurry containing aggregate particles on the partition wall surface of the base material and drying And can be formed by a firing method or the like. The film formation can be performed by a conventionally known film formation method such as a dip film formation method, but by a filtration film formation method (see Japanese Patent Publication No. 63-66566) that can effectively prevent film defects such as pinholes. Preferably it is done.

  Further, as the monolithic filter, for example, a large number of cells 3 are formed as in the monolithic filter 2 shown in FIG. 8, and a group of cells and a monolith arranged in parallel in a part of the longitudinal direction. A water collecting slit 5 that communicates with the external space 4 is formed, and a cell (water collecting cell) that communicates with the water collecting slit 5 is plugged at both ends by plugging members 6. Can be used.

  In a monolithic filter, the flow resistance when the filtrate flows out of the monolith is larger in the cells near the center, so only the cells near the outer periphery where the flow resistance is small when the filtrate flows out of the monolith are used for filtration. It can happen that the substantial filtration area and thus the water permeability is reduced. With the above structure, the filtrate flowing out from the cell in the vicinity of the central portion can be quickly discharged into the external space of the monolith via the water collecting slit. Therefore, the cell in the vicinity of the central portion can be effectively used, and the substantial filtration area and consequently the water permeation amount can be greatly increased. Such a structure is particularly effective in the case of a large monolithic filter having a long distance from the cell near the center to the outer periphery of the monolith. In addition, about the water collection cell, since it is set as the structure which plugs the both-ends opening part of a cell, undiluted | mixed liquid does not mix from a cell opening part.

  The water collecting slit can be formed by breaking a group of cells arranged in parallel so as to communicate with the external space of the monolith. The rupture of the cell may be performed at the stage of the formed body before firing and the dried body, or may be performed at the stage of the sintered body after firing. Further, the plugging of the cell opening is performed by, for example, a method of drying and firing after filling the cell opening to be plugged with a clay (plugging material) made of the same material as the monolith. be able to. As shown in FIG. 8, the water collecting slits 5 are often formed in the vicinity of both end faces of the monolith 4. And it is common that each water collecting slit 5 is formed so that it may mutually be parallel.

  There is no restriction | limiting in particular about the shape of a filter element. Examples of the overall shape include a columnar shape as shown in FIG. 1, a quadrangular prism shape, a triangular prism shape, and the like. Among them, a columnar shape that is easy to be extruded, has little firing deformation, and is easy to seal with the casing is preferably used.

  Examples of the cell shape (shape in a cross section orthogonal to the liquid flow direction) include shapes such as a square cell, a hexagonal cell, and a triangular cell in addition to a circular cell as shown in FIG. Among them, a circular cell that can be easily removed by separating and removing suspended substances deposited on the surface of the partition wall during backwashing is preferably used.

  An internal space is formed in the casing, and the filter element is accommodated in the internal space. As described above, columnar elements are generally used as filter elements, and therefore, the casing is often in a cylindrical shape that can accommodate these columnar bodies. For example, when a columnar filter element is used, a cylindrical casing is preferably used.

  For example, as shown in FIG. 7, the filter element 104 is configured by housing the filter element 104 in the casing 102. For example, if a cylindrical monolithic filter is used as the filter element, it is preferable to store the monolithic filter vertically so that the cells open in the vertical direction. In such a filter, filtration is performed when the stock solution is supplied from the lower end side of the filter element and circulated toward the upper end side (so-called upward flow filtration).

  Further, the casing 102 is formed with a stock solution supply port 106 and a filtrate delivery port 108 in the filter element 104 so as to communicate with the internal space. In the casing 102 shown in FIG. 7, a stock solution discharge port 110 is further formed.

  The stock solution supply port is an opening for supplying the stock solution to the filter element, and is also used when discharging backwash drainage. This stock solution supply port is connected to one opening of the stock solution supply header. In a filter that performs upward flow filtration, since the stock solution is supplied from the lower end side of the filter element, the stock solution supply port 106 is often formed on the lower end side of the casing 102 as shown in FIG. In this case, the stock solution supply header preferably includes the header plate and the header pipe described above. The stock solution supply port 106 is preferably connected to the opening hole of the header plate.

  The filtrate outlet is an opening for delivering filtrate from the filter element, and is also used when supplying clear water for backwashing. The filtrate outlet is connected to one opening of the filtrate recovery header through an attached flange. From the viewpoint of facilitating air bleeding in the casing, it is preferable to form a filtrate outlet 108 on the upper end side of the casing 102 as shown in FIG.

  The stock solution discharge port is necessary for discharging the stock solution in the case of adopting a cross flow operation (a method of continuously filtering the stock solution while circulating it through the filter element). It can also be used when supplying backwashing compressed air.

  In the case where the filter has a stock solution discharge port, it is preferable that the filter module includes a stock solution recovery header. The stock solution outlet is preferably connected to one opening of the stock solution recovery header. In a filter that performs upward flow filtration, since the stock solution is discharged from the upper end side of the filter element, the stock solution discharge port 110 is preferably formed on the upper end side of the casing 102 as shown in FIG.

  In addition, the casing does not need to be comprised integrally, and may be comprised by some members. For example, as shown in the casing 102 shown in FIG. 7, there is a structure composed of a hollow cylindrical casing main body 112, an upper cap 114 attached to the upper end thereof, and a bottom cap 116 attached to the lower end thereof. In the casing 102, a filtrate outlet 108 is formed in the vicinity of the upper end of the casing main body 112, a stock solution discharge port 110 is formed at the top of the upper cap 114, and a stock solution supply port 106 is formed at the lower end of the bottom cap 116.

  When the casing is composed of several members, it is preferable to connect the members using a flange. At this time, as shown in FIG. 7, seal members such as O-rings 118 and 120 made of an elastic material such as rubber or a ring-shaped flat packing are interposed between the members to be connected to ensure liquid tightness. It is preferable to connect each member in the state which was carried out. For example, a method of arranging a sealing material along the flanges of both members to be connected, providing bolt holes on the outer peripheral side of the sealing material arrangement portion of the flange, and fixing with bolts and nuts, etc., can be mentioned. At this time, in order to facilitate the arrangement of the sealing material and to perform reliable fixing, a concave groove for arranging and fixing the sealing material may be provided on the flange.

  The casing is preferably made of a material that is impermeable and has high corrosion resistance. A resin casing or the like is suitably used in the case of a resin filter element, and a stainless steel casing or the like is suitably used in the case of a ceramic filter element.

  When configuring the filter, it is preferable to have a structure in which the filter element is housed in the casing in a state in which the stock solution channel and the filtrate channel are liquid-tightly separated by a sealing material. The structure is not particularly limited, but usually, a structure in which a sealing material is arranged along the outer edge of both end faces of the filter element so as not to close the cell opening, and the sealing material is in contact with a part of the casing. preferable.

  The shape, structure, material, and the like of the sealing material are not particularly limited, and may be, for example, an O-ring made of an elastic material such as rubber, a ring-shaped flat packing, or the like. By arranging an O-ring or ring-shaped flat packing so as to surround all of the plurality of cell openings along the outer edge of the end face of the filter element, the above two functions can be ensured.

  However, when a monolithic filter is used as the filter element, it is preferable to use seal caps 122 and 124 as the sealing material as shown in FIG. In this specification, the term “seal cap” means a cap-like seal material used by being attached to the end of a columnar body such as a filter element (see, for example, Japanese Patent Laid-Open No. 10-184919). Such a cap-shaped sealing material is preferable in terms of ensuring high liquid-tightness in addition to being able to be easily and reliably fixed to the filter element, as compared to O-rings and ring-shaped flat packings.

  In the filter 100 shown in FIG. 7, when the stock solution is supplied from the stock solution supply port 106 of the bottom cap 116 into the cell of the filter element 104 at a predetermined pressure, the stock solution is filtered when passing through the partition walls partitioning the cell. Then, it flows out from the outer peripheral surface of the filter element 104 as filtrate into a space 126 formed between the outer peripheral surface 104a of the filter element 104 and the inner peripheral surface 112a of the casing body 112. This filtrate is stored in the space 126 and is finally recovered from the filtrate outlet 108 of the casing body 112.

  Usually, the filter 100 is used as a dead-end type filter by closing the stock solution outlet 110 at the top of the upper cap 114 with a valve or the like. However, the undiluted solution discharge port 110 and the undiluted solution supply port 106 are connected by a pipe or the like so that the undiluted solution circulates in the filter 100, so that it can be used as a cross-flow type filter.

  As described above, the filtration device of the present invention has a simple structure, can easily align a plurality of filters, and can be a low-cost filtration device. Etc., and can be suitably used. Moreover, such a filtration apparatus can be suitably comprised by using the header for filtration apparatuses of this invention.

It is a perspective view which shows typically one form of a filter element. It is a figure which shows one Embodiment of the filtration apparatus of this invention typically, Fig.2 (a) is a typical front view, FIG.2 (b) is a typical side view. FIG. 3A is a schematic perspective view showing an embodiment of a header pipe according to the present invention, and FIG. 3B is a schematic perspective view showing an embodiment of a header plate according to the present invention. . It is a figure which shows typically one Embodiment of the header for filtration apparatuses which concerns on this invention, Fig.4 (a) is typical top view, FIG.4 (b) is typical front view, FIG.4 (c). Is a schematic side view. It is a figure which shows typically another embodiment of the header board which concerns on this invention, Fig.5 (a) is typical perspective view, FIG.5 (b) is typical sectional drawing. It is typical sectional drawing which shows another embodiment of the header for filtration apparatuses which concerns on this invention. It is typical sectional drawing which shows one Embodiment of the filter concerning this invention. It is a perspective view which shows another form of a filter element.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... Monolith-like filter, 3 ... Cell, 4 ... Monolith, 5 ... Water collecting slit, 6 ... Plugging member, 10 ... Filtration apparatus, 12 ... Filter, 20 ... Stock solution supply header, 21 ... Header pipe, 22 ... Pipe wall, 23 ... opening, 24 ... space, 25 ... header plate, 26 ... opening hole, 27 ... through hole, 28 ... side surface of opening hole, 29 ... end face of header plate, 30 ... filtrate recovery header, 31 ... header End face of pipe, 33 ... Stock solution recovery header, 34 ... Flange, 35 ... Stock solution discharge port, 40 ... Module, 100 ... Filter, 102 ... Casing, 104 ... Filter element, 104a ... Outer surface of filter element, 106 ... Supply of stock solution Mouth, 108 ... Filtrate outlet, 110 ... Stock solution outlet, 112 ... Casing body, 112a ... Inner surface of casing body, 114 ... Top cap, 116 ... Bottom cap, 118 120 ... O-ring, 122, 124 ... seal cap, 126 ... space.

Claims (11)

A filter module comprising: a plurality of filters; a stock solution supply header that supplies a stock solution that is a liquid to be processed to the plurality of filters; and a filtrate collection header that collects a filtrate that is a processed liquid from the plurality of filters. A filtering device comprising at least one,
At least one of the stock solution supply header and the filtrate recovery header includes a header pipe having an opening in a pipe wall, and a header plate fitted into the opening and having a plurality of opening holes penetrating in the thickness direction, A filtration device in which a plurality of filters are connected to a plurality of opening holes of the header plate.   The filtration device according to claim 1, wherein the plurality of opening holes of the header plate are arranged side by side in the longitudinal direction of the header pipe.   The filtration device according to claim 1 or 2, wherein the header plate has a through hole penetrating from a side surface of one opening hole located on an end portion side in the longitudinal direction of the header pipe to an end surface in the longitudinal direction.   The filtration apparatus according to any one of claims 1 to 3, wherein the stock solution supply header includes the header pipe and the header plate, and is disposed below the filter.   The filter comprises a casing having a stock solution supply port and a filtrate delivery port, and a filter element having a porous partition wall that forms a cell that is housed in the casing and serves as a liquid flow path, and the stock solution supply port; The filtration device according to claim 4, wherein the opening hole is connected.   The filtration device according to any one of claims 1 to 5, wherein the filter module includes a stock solution recovery header connected to a filter.   The filtration device according to claim 1, wherein the filtration device includes a plurality of the filter modules. A header for a filtration device that supplies a raw liquid that is a liquid to be processed to a plurality of filters or collects a filtrate that is a processed liquid from a plurality of filters, the header pipe having an opening on a tube wall, and the opening And a header plate having a plurality of opening holes for coupling with the filter.   The header for filtration devices according to claim 8 in which a plurality of opening holes of said header plate are arranged along with the longitudinal direction of said header pipe.   The header for filtration devices according to claim 9 in which a plurality of opening holes of said header plate are arranged in a line.   The filtration device according to any one of claims 8 to 10, wherein the header plate has a through-hole penetrating from a side surface of one opening hole located at an end portion in the longitudinal direction of the header pipe to an end surface in the longitudinal direction. header.

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