Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
  • B01D29/46—Edge filtering elements, i.e. using contiguous impervious surfaces of flat, stacked bodies

Definitions

• the present invention relates to a filtration apparatus for filtering and removing particles (for example, suspended solids) contained in a fluid such as water by a filter unit.
• particles for example, suspended solids
• Japanese Patent Application Laid-Open No. 2003-1017 describes a filtration device that increases a permeation area and increases a treatment capacity by filtering water with a filter layer configured of a compressed flexible weft filter. It is done.
• Patent Document 1 Japanese Unexamined Patent Application Publication No. 2003-1017
• the present invention has been made to solve such a problem, and has a high precision filtration function by stabilizing the size of a large number of fine openings for fluid removal and removal of particles.
• the purpose is to provide a highly rigid and compact filter device that can be easily disassembled and cleaned to recover its filtration function and be reused even if clogging occurs. I assume. Disclosure of the invention
• a filtration device is a filtration device in which a filter unit for filtering a fluid is attached to the inside of a casing.
• the filter unit has a same or different shape, and a plurality of sheets overlapping in a direction orthogonal to the axial direction and having a laminated structure and a plurality of projections are disposed, And a pressing means for pressing the plurality of combined filter plates in the axial direction from both directions in the axial direction to unify the whole of the plurality of filter plate members in a decomposable manner.
• the filtration plate members are pressed against each other by the pressing means at the positions of the respective convex portions to form columnar portions, and fine openings are dispersed to form a plurality of adjacent columnar portions.
• the filtration plate has the same shape, and the plurality of projections are integrally or separately provided on the surface, and the projections of the one filtration plate are the other.
• the cross-sectional shape of the filter portion when viewed in the axial direction is annular, and the plurality of convex portions are integrally or separately joined on the surface of the filtration plate material.
• the plurality of convex portions are arranged radially with respect to the center of the filter plate and uniformly in the circumferential direction.
• the clearance dimension of the opening is determined by the height dimension of the convex portion on the surface of the filtration plate material.
• the width dimension of the openings is determined by the pitch between the adjacent convex portions and the width dimension of the convex portions.
• the convex portion is integrally formed on the surface of the filter plate by etching the portion other than the position where the convex portion is to be formed.
• the convex portion may be integrally provided on the surface of the filtration plate material by fixing another part to the filtration plate material by thermal spraying, an adhesive or the like.
• one of the filter plate members is an annular inner ring material in which a plurality of outward projecting pieces project radially outward from an outer peripheral edge thereof, and the other filter plate member has an inner peripheral edge thereof.
• the force is also an annular outer ring material in which a plurality of inward projecting pieces project toward the center. Then, the inner ring material and the outer ring material having different shapes are alternately stacked. Thus, one or both of the outward projecting piece and the inward projecting piece exert the function of the convex portion to form the columnar portion and to form the opening.
• the thickness of one of the members that exerts the function of the convex portion is thinner than the thickness of the other member.
• the opening is formed by sandwiching the one member between the upper and lower other members.
• the gap dimension of the openings formed by the convex portions is smaller than the gap dimension of the space in the filter portion. The fluid is caused to flow such that the small size opening is upstream of the fluid and the large size space is downstream.
• the cross-sectional shape of the filter portion is an annular shape, a polygonal annular shape, a linear band shape, or a curved band shape.
• the pressing means is attached to the bottom plate portion disposed at the bottom portion of the filter portion, the pressing plate disposed at the upper portion of the filter portion, and the bottom plate portion, and is extended and fixed in the axial direction at a central position. And a nut screwed into the support bolt.
• the end faces of one side of the plurality of filtration plate members overlapping each other to form a laminated structure are supported by the bottom plate portion, and the end faces of the other side are supported by the pressing plate.
• the nut By screwing the nut into the support bolt and tightening it, the plurality of filtration plate members are sandwiched from both directions in the axial direction and integrated as a whole, and the nut is loosened to remove the pressing plate. It is preferable that the filtration plate can be disassembled into pieces.
• a plurality of holes are bored at equal distances from the central position and at equal positions in the circumferential direction, and the holes are obtained by overlapping the plurality of filtration plate materials.
• a plurality of positioning bars are attached to the bottom plate portion and are oriented in a direction parallel to the axis, center position Equidistantly from the center and equally spaced in the circumferential direction, a plurality of holes are bored equally in the circumferential direction at equal distances from the central position in the pressing plate;
• the filter members When assembling the filter unit, even if the filter plate members are slightly deformed, the filter members may be pressed from both directions in the axial direction with the pressing means in a state in which the plurality of filter plate members are stacked. The deformation of the plate is automatically corrected to a preferable laminated state.
• the above-mentioned filtration boards are stacked 200 to 1,000 to form a laminated structure.
• the material of the filtration plate material is a metal such as stainless steel or titanium, or a hardness of at least a predetermined value so that elastic deformation or plastic deformation is hardly caused when the plurality of filtration plate materials are stacked and pressed by the pressing means. It is preferable to use synthetic resin or ceramic.
• the fluid to be filtered by the filtration device is a liquid selected from the group consisting of food, paint, chemicals and oils, or air supplied to a clean room.
• the filtration device of the present invention Since the filtration device of the present invention is configured as described above, it stabilizes the size of a large number of fine openings through which fluid passes and removes particles, and exhibits a highly accurate filtration function. Shall do it.
• the filter unit can be easily disassembled and cleaned. Therefore, the filter function can be restored to reuse the filter section, and furthermore, the filter section can be made highly rigid and miniaturized.
• FIG. 1 is a schematic configuration view of a filtration system having a filtration device of the present invention.
• FIGS. 2 to 8 show the first embodiment of the present invention.
• Figures 2 (A) and 2 (B) are a plan view and a front view, respectively, of the filter section.
• FIG. 3 It is a perspective view showing a part of a filter part.
• FIG. 4 It is an exploded perspective view of a filter part.
• FIG. 5 is an exploded cross-sectional perspective view of the filtration device.
• Fig. 6 is a cross-sectional perspective view of the filtration device showing a state in which the filter portion is assembled.
• Fig. 7 is a sectional view taken along line VII in Fig. 6, and Figs. 7 (B) and 7 (C) are respectively
• FIG. 8 shows a modification. Figs. 8 (A), (B) and (C) are equivalent to Figs. 7 (A), (B) and (C), respectively.
• Fig. 9 is an exploded perspective view of a filter unit according to a second embodiment of the present invention, corresponding to Fig. 4.
• FIG. 10 is a cross-sectional perspective view of the filtration device showing a state in which the filter unit is assembled.
• Fig. 11 is a sectional view taken along line XI of Fig. 10
• Figs. 11 (B) and 11 (C) are sectional views taken along line B-B and CC of Fig. 11 (A), respectively. is there.
• FIGS. 12 (A) and 12 (B) are respectively a schematic plan view of a filtration device according to another modification of the present invention, and a schematic plan view of a filter portion.
• FIGS. 13 (A) and 13 (B) are respectively a schematic plan view of a filtration apparatus and a schematic plan view of a filter portion according to still another modification of the present invention.
• FIGS. 14 (A) and 14 (B) are respectively a schematic plan view of a filtration device and a schematic plan view of a filter portion according to still another modification of the present invention.
• FIG. 15 is a view showing experimental data such as thickness and aperture ratio of filtration plate material.
• Fig. 16 is a diagram showing other experimental data on the thickness of the filtration plate, the gap size of the openings, and the aperture ratio.
• FIG. 17 is a graph showing particle size distribution.
• the filter unit of the filtration apparatus includes a plurality of filtration plate materials and pressing means.
• the filter plates have the same or different shapes.
• a plurality of filter boards (for example, 200 to 1,000 sheets) overlap each other in a direction orthogonal to the axial direction to form a laminated structure.
• a plurality of convex portions are disposed on the filtration plate.
• the pressing means presses the plurality of overlapping filtration plates from both directions in the axial direction, and integrates the plurality of filtration plates so that they can be disassembled.
• filtration board material is pressure-contacted in the position of each convex part, and the columnar part is formed.
• a plurality of fine opening force dispersions are formed between the adjacent columnar parts.
• the fluid to be filtered by the filtration device may be a liquid such as water or oil, or a gas such as air or gas.
• the liquid include drinking water, foods such as tomato juice, paints, medicines, oils and the like.
• the gas for example, there is air supplied to a clean room of a semiconductor manufacturing apparatus.
• the filtration device of the present invention can be disposed at the center of a cyclone to filter gases such as air and gas.
• FIG. 1 is a schematic configuration view of a filtration system having a filtration device of the present invention.
• FIGS. 2 to 8 are views showing a first embodiment of the present invention, and FIGS. 2 (A) and 2 (B) are respectively a plan view and a front view of a filter section.
• Fig. 3 is a perspective view showing a part of the filter unit
• Fig. 4 is an exploded perspective view of the filter unit
• Fig. 5 is an exploded cross-sectional perspective view of the filter device
• Fig. 6 is a filter device showing an assembled filter unit. It is a cross-sectional perspective view.
• FIGS. 7 (A) is a cross-sectional view taken along line VII of FIG. 6, and FIGS. 7 (B) and 7 (C) are cross-sectional views taken along line B-B and line C-C of FIG. 7 (A), respectively.
• FIGS. 8 (A), (B) and (C) are views showing a modification of the first embodiment, and are respectively equivalent to FIGS. 7 (A), (B) and (C).
• FIG. 9 is an exploded perspective view of a filter unit according to a second embodiment of the present invention, corresponding to FIG.
• FIG. 10 is a cross-sectional perspective view of the filtration device showing the assembled filter unit.
• 11A is a cross-sectional view taken along line XI of FIG. 10
• FIGS. 11B and 11C are cross-sectional views taken along line B-B and line CC of FIG. 11A, respectively.
• FIGS. 12 (A) and 12 (B) are respectively a schematic plan view of a filtration device according to another modification of the present invention and a schematic plan view of a filter portion.
• FIGS. 13 (A) and 13 (B) are respectively a schematic plan view of a filtration apparatus and a schematic plan view of a filter portion according to still another modification of the present invention.
• FIGS. 14 (A) and 14 (B) are respectively a schematic plan view of a filtration device and a schematic plan view of a filter portion according to still another modification of the present invention.
• a filtration device 1 or filtration devices la to Id of the present invention is provided in a filtration system 2.
• water as a fluid is filtered to remove particles (eg, suspended solids) contained in water (raw water 3).
• Raw water 3 that has not yet been filtered is stored in the raw water tank 4.
• the raw water 3 in the raw water tank 4 is supplied by the raw water pump 5 to the filtration device 1, la ⁇ ; Id and filtered. Particles in the raw water 3 are removed by the filtration device 1, la to Id to obtain clean filtered water 6.
• the filtered water 6 is stored in the filtered water tank 7.
• the filter unit 10 (or the filter unit 10 a to 10 d) for filtering water is attached to the inside of the casing 11 (or the casing 11 a to l id).
• the filter portions 10, 10a to 10d gradually become clogged.
• the backwash pump 12 provided at the outlet of the filtered water tank 7 is driven.
• the filtered water 6 stored in the filtered water tank 7 is supplied to the filtration devices 1, 1a to Id by the backwashing pump 12 to backwash the filter units 10, 10a to 10d.
• Waste water 13 generated by backwashing is stored in a waste water tank 14.
• valve V of the outlet of raw water pump 5 and valve V2 in piping for flowing filtered water 6 from filtration device 1, la ⁇ Id to filtered water tank 7 It is open. Close the valve V3 at the outlet of the backwash pump 12 and the valve V4 in the piping for flowing the filter power also to the waste water tank 14.
• the raw water pump 5 is turned on and the backwashing pump 12 is turned off.
• valves VI and V2 are closed, the valves V3 and V4 are opened, the raw water pump 5 is turned off, and the backwashing pump 12 is turned on.
• the filter unit 10 includes a plurality of filtration plate members 16 and pressing means 17.
• the plurality of filter plates 16 have the same shape.
• the filter plate 16 has a laminated structure in which a plurality of sheets overlap each other in a direction orthogonal to the direction of the axis line CL.
• a plurality of projections 15 are disposed on the filtration plate 16 having a thickness t.
• the pressing means 17 presses the plurality of overlapping filter plates 16 from both directions in the direction of the axis line CL, and integrates the plurality of filter plates 16 so that they can be disassembled. Then, in the filter unit 10, the filtration plate members 16 are pressed against each other by the pressing means 17 at the positions of the respective convex portions 15 to form the columnar portions 18. A plurality of minute openings 19 are dispersed between adjacent columnar portions 18 to form a plurality. By passing water (raw water 3) through the opening 19, the particles 20 in the raw water 3 are removed.
• the filter unit 10 has a plurality of columnar portions 18. Therefore, the sizes of many fine openings 19 (for example, the gap size d and the width size e) for removing water (raw water 3 and filtered water 6) and removing the particles 20 are stabilized. As a result, the filter unit 10 can exhibit a highly accurate filtration function.
• the filter unit 10 If the filter unit 10 is clogged, the filter unit 10 is first backwashed. If the filtration function does not recover even after backwashing, disassemble and wash the filter unit 10.
• the filtration function of the filter unit 10 can be easily recovered and reused. Further, since the plurality of filtration plate members 16 are integrated by the pressing means 17, the filter unit 10 can be miniaturized with high rigidity.
• each filtration board 16 having a laminated structure is also annular.
• the material of the filter plate 16 is a metal such as stainless steel or a synthetic resin having a hardness of a predetermined value or more. If it is filtration board material 16 of these materials, when a plurality of filtration board materials 16 are piled up and it presses with pushing means 17, since elastic deformation and plastic deformation are hardly done, it is desirable.
• the filter plate 16 hardly deforms, so the size of the large number of fine openings 19 can be maintained at a predetermined value, and the filter unit 10 can exhibit a highly accurate filtration function.
• the rigidity of the filter unit 10 can be maintained high.
• the filter plate 16 hardly squeezes or deforms. Therefore, a high-precision filtration function can be stably exhibited, which almost eliminates the possibility that the shape of the openings 19 changes during filtration.
• a plurality of (here, three) holes 25 are formed in the filtration plate 16 at equal distances from the center position and at equal positions in the circumferential direction.
• the holes 25 are used to position the filter plates 16 so that they overlap exactly in the radial and circumferential directions when the filter plates 16 are stacked. Forgiveness.
• a plurality of projections 15 are separately formed by being separately joined as shown in FIG.
• the plurality of convex portions 15 are arranged radially with respect to the center of the filter plate 16 and equally spaced in the circumferential direction.
• the height of the projections 15 on the surface of the filtration plate 16 is formed to a predetermined size.
• the height dimension of the convex portion 15 determines the clearance dimension d of the opening 19.
• the width dimension e of the opening 19 is determined by the pitch P between the adjacent convex portions 15 and the width dimension f of the convex portions 15.
• the number, the shape, the position, the height dimension, the pitch P, the width dimension f and the like of the convex portions 15 formed on the filtration plate 16 are set to arbitrary values.
• the convex portion 15 As a method of forming the convex portion 15, there is a method of corroding a portion other than the position where the convex portion 15 is to be formed by etching, and as a result, the convex portion 15 is integrally formed. In the first embodiment shown in FIGS. 2 to 7, the case where the convex portion 15 is integrally formed on the surface of the filter plate 16 is shown.
• the projection 15 may be formed by fixing another part (for example, washer, spacer) by thermal spraying, an adhesive or the like.
• another part for example, washer, spacer
• thermal spraying an adhesive or the like.
• All filter plate members 16 constituting the filter unit 10 have the same shape. Therefore, the manufacture of the filtration plate 16 and the assembly work of laminating a large number of filtration plates 16 into a laminated structure are facilitated.
• the casing 11 has a bottom plate 27 attached to the lower part of the cylindrical part 26, a flange 28 attached to the upper part of the cylindrical part 26, and a flange 28 attached to the cover 28 to close the opening. And 29.
• the bottom plate 27 is connected with a pipe 30 for flowing the wastewater 13.
• a supply port 32 is formed in the cylindrical portion 26. The supply port 32 is in contact with the piping 31 to which the raw water pump 5 is connected. It is continued.
• the inside of the casing 11 is partitioned by the filter unit 10.
• the outer peripheral side of the filter unit 10 is the raw water 3 supply side.
• the filtered water 6 filtered by the filter unit 10 flows into the inside of the filter unit 10.
• the pressing means 17 has a bottom plate portion 27 disposed at the bottom of the filter portion 10 and a circular pressing plate 33 disposed at the top of the filter portion 10. Further, the pressing means 17 has a support bolt 34 attached to the bottom plate portion 27 and extended and fixed in the direction of the axis line CL at a central position, and a nut 35 screwed to the support bolt 34.
• a plurality of (here, three) holes 37 are formed in the holding plate 33 at equal distances from the center position and equally in the circumferential direction.
• the plurality of filter plates 16 are sandwiched from both directions in the direction of the axis line CL and the whole is integrated.
• the plurality of filter plates 16 can be disassembled into pieces by loosening the nut 35 and removing the pressing plate 33.
• a plurality of (in this case, three) positioning rods 36 are attached to the bottom plate 27.
• the bar 36 points in a direction parallel to the axis CL.
• the bars 36 are equally spaced from the center position and equally spaced in the circumferential direction.
• the holes 25 of the filter plate 16 and the holes 37 of the pressure plate 33 are engaged with the bar 36.
• the center positions of the plurality of filtration plate members 16 can be made to coincide with each other, and the positions in the circumferential direction can also be made to coincide.
• the convex portions 15 of the plurality of filtration plate members 16 are linearly arranged, and the plurality of columnar portions 18 are formed in parallel with the axis line CL.
• the filter unit 10 has a cylindrical portion 38 in which a plurality of filter plate members 16 have a laminated structure, a bottom plate 27 supporting the cylindrical portion 38 below the axis line CL, and a cylindrical portion 38 from above the axis line CL. And a pressing plate 33 for pressing.
• the filter unit 10 has a sealed structure.
• a pipe 39 for flowing the filtered water 6 to the filtered water tank 7 and a pipe 40 connected to the discharge side of the backwash pump 12 are attached to the holding plate 33.
• the raw water 3 in the raw water tank 4 flows through the raw water pump 5 and the pipe 31, and the case 3 from the supply port 32. Flows into the building.
• the raw water 3 supplied to the outside of the filter unit 10 is filtered by the filter unit 10 to become filtered water 6 and flows inward of the filter unit 10. Thereafter, the filtered water 6 is stored in the filtered water tank 7 through the pipe 39.
• the raw water 3 passes from the outside of the cylindrical section 38 through the large number of openings 19 between the filter plates 16 as shown by the arrow G. As a result, the particles 20 contained in the raw water 3 are removed and become clean filtered water 6 and flow inside the cylindrical portion 38.
• a filter unit 10a for filtering water (raw water 5) as a fluid is attached to the inside of the casing 11a.
• the filter unit 10a includes an inner ring material 16al and an outer ring material 16a2 as filtration plate materials, and a pressing unit 17.
• the inner ring material 16al and the outer ring material 16a2 have shapes different from each other.
• the inner ring member 16al and the outer ring member 16a2 face each other in a direction orthogonal to the direction of the axis line CL, and a plurality of sheets are alternately overlapped to form a laminated structure.
• a plurality of convex portions 15a are disposed on the inner ring material (filter plate material) 16al.
• the pressing means 17 presses a plurality of overlapping filtration plate members (inner ring member 16al, outer ring member 16a2) from both directions in the direction of the axis line CL, and integrates the plurality of filtration plate members so that they can be disassembled.
• the filter plate members (inner ring material 16al and outer ring material 16a2) are pressed against each other by the pressing means 17 at the positions of the respective convex portions 15a to form the columnar portions 18a.
• a plurality of fine openings 19a are formed in a dispersed manner between the adjacent columnar portions 18a. By passing the fluid (raw water 3) through the openings 19a, the particles 20 in the fluid (raw water 3) are removed.
• the filter unit 10a has a plurality of columnar portions 18a. Therefore, the size of the large number of fine openings 19a for removing the particles 20 through which the raw water 3 passes is stabilized. As a result, the filter unit 10a can exhibit a highly accurate filtration function.
• the filter portion 10a can be miniaturized with high rigidity.
• a cylindrical portion 38 is formed of two types of filtration plate materials.
• One of the filter plate members is an annular inner ring member 16al having a plurality of outwardly projecting pieces 45 projecting radially outward.
• Another filtration plate material is an outer ring material 16a2 having a thickness t in an annular shape.
• a plurality of inward projecting pieces 46 project from the inner peripheral edge of the outer ring member 16a2 toward the center.
• the inner ring member 16al and the outer ring member 16a2 having different shapes are alternately overlapped and joined.
• one or both of the outward projecting piece 45 and the inward projecting piece 46 exhibit the function of the convex portion 15a to form the columnar portion 18a. Form an opening 19a.
• the inner ring material 16al and the outer ring material 16a2 there are two kinds of filtration plate materials, the inner ring material 16al and the outer ring material 16a2.
• the inner ring material 16al and the outer ring material 16a2 can be manufactured easily and in large numbers S by press working or the like.
• the inner ring material 16al and the outer ring material 16a2 are alternately superposed. Accordingly, the outwardly projecting piece 45 of the inner ring material 16al is sandwiched between the upper and lower outer ring members 16a2, and the outwardly projecting piece 45 exerts the function of the convex portion 15a.
• the gap between adjacent convex portions 15a is 19a.
• the size of the opening 19a is, for example, a gap dimension d and a width dimension e.
• the inward projecting pieces 46 of the outer ring member 16a2 are in a state of being sandwiched by the upper and lower inner ring members 16al.
• Spaces 47 communicate with the openings 19a, with spaces 47 between the inward projecting pieces 46 which are adjacent to each other.
• the clearance dimension t of the space 47 is larger than the clearance dimension d of the opening 19a. Therefore, in the cylindrical portion 38 of the filter portion 10a, when the raw water 3 passes from the outer peripheral surface 48 through the opening 19a Removed (arrow Gl). Thereafter, the filtered water 6 flows from the inner circumferential surface 49 of the cylindrical portion 38 through the space 47 as shown by the arrow G2.
• the thickness (here, thickness d) of one member here, the inner ring material 16al which exhibits the function of the convex portion 15a among the inner ring material 16al and the outer ring material 16a2
• the thickness (in this case, the thickness t here) of the member (in this case, the outer ring member 16a2) is smaller.
• an opening 19a having a gap size d is formed in the outer peripheral surface 48 with the inner ring member 16al having a thickness d interposed therebetween.
• the gap dimension d of the opening 19a formed by the projection 15a is smaller than the gap dimension t of the space 47 in the filter portion 10a.
• the raw water 3 is made to flow so that the small-sized opening 19a is upstream of the fluid (water) and the large-sized space 47 is downstream. Therefore, the particles 20 to be filtered in the raw water 3 are collected at the opening 19a of the filter portion 10a (ie, the outer peripheral surface 48 of the filter portion 10a) and do not enter the space 47.
• a plurality of holes 25 are bored at equal positions in the circumferential direction at equal distances from the center position.
• the holes 25 are positioned for accurate overlapping in the radial direction and the circumferential direction.
• a plurality of positioning bars 36 are attached to the bottom plate portion 27, face in a direction parallel to the axis line CL, and equally spaced from the center position at equal distances in the circumferential direction.
• a plurality of holes 37 are bored in the holding plate 33 at equal distances from the central position and equally in the circumferential direction. Engage with 37.
• the inward protruding piece 46 of the outer ring member 16a2 has a function of a convex portion. It is also possible to form a columnar portion and to form an opening on the inner circumferential surface 49 of the filter portion.
• the raw water 3 is flowed so that the small-sized opening is upstream of the fluid (water) and the large-sized space is downstream. Therefore, the particles 20 to be filtered in the raw water 3 are collected at the openings of the inner peripheral surface of the filter portion and do not infiltrate into the space. As a result, there is no risk that particles 20 will gradually accumulate in the space within the filter section. In addition, the particles 20 attached to the inner circumferential surface 49 can be removed and the filter portion can be easily backwashed.
• the cross-sectional shape of the filter portion when viewed in the direction of the axis line CL may be a polygonal ring, a straight band, or a curved band.
• the cross-sectional shape force S of the filter portion 10b and the case of a triangular ring among the polygonal ring are shown.
• the filter unit 10b that filters fluid (water) is installed inside the casing l ib.
• the filter unit 10 b includes a plurality of triangular filter plates 16 b and pressing means 17 b.
• the filter plate 16b has the same (or different) shape.
• a plurality of filtration plate members 16 b are laminated in a stacked structure, with a direction perpendicular to the direction of the axis line CL.
• a plurality of projections 15 are disposed on the filtration plate 16b.
• the pressing means 17b presses the plurality of overlapping filter plates 16b from both directions in the direction of the axis line CL, and integrates the whole of the filter plates 16b so that they can be disassembled.
• the filtration plate members 16 b are pressure-welded with each other by the pressing means 17 b at the positions of the convex portions 15 to form the columnar portions 18 b. Further, a plurality of minute openings 19b 1S are dispersed and formed between the adjacent columnar parts 18b. As the fluid passes through the openings 19b, particles in the fluid are removed.
• the filter section 10c of the filtration device lc shown in FIG. 13 has a cross-sectional shape as viewed in the direction of the axis line CL.
• the shape is a straight band.
• the filter part 10d of the filtration device Id shown in FIG. 14 has a curved band shape in cross section when viewed in the direction of the axis line CL.
• filter units 10c, 10d for filtering fluid for example, water are attached to the inside of the casing 1 lc, 11d, respectively.
• the filter unit 10c shown in FIG. 13 includes a plurality of filtration plate members 16c and pressing means 17c.
• the filter plate 16c has the same (or different) shape.
• a plurality of sheets 16c overlap each other in a direction perpendicular to the direction of the axis line CL to form a laminated structure.
• a plurality of projections 15 are disposed on the filtration plate 16c.
• the pressing means 17c presses the plurality of overlapping filtration plates 16c from both directions in the direction of the axis line CL, and integrates the plurality of filtration plates 16c so that they can be disassembled.
• the filtration plate members 16c are pressed against each other by the pressing means 17c to form a columnar portion 18c. Also, between the adjacent columnar parts 18c, fine openings 19c are formed.
• the filter section 10d shown in FIG. 14 has a curved band shape in cross section when viewed in the direction of the axis line CL.
• the filter unit 10d includes a plurality of filtration plate members 16d and pressing means 17d.
• the plurality of filter plates 16 d have the same shape.
• a plurality of filtration plate members 16d are stacked in a stacked structure, with a direction perpendicular to the direction of the axis line CL.
• a plurality of projections 15 are disposed on the filtration plate 16d.
• the pressing means 17 d presses the plurality of overlapping filtration plates 16 d from both directions in the direction of the axis line CL, and integrates the plurality of filtration plates 16 d so that they can be disassembled. Then, the filtration plate members 16 d are pressed against each other by the pressing means 17 d at the positions of the respective convex portions 15 to form a columnar portion 18 d. In addition, fine gaps 19d are formed between adjacent columnar parts 18d.
• a plurality of 1S are dispersed and formed. As the fluid passes through the openings 19d, particles in this fluid are removed.
• the filtration plate 16b (or the filtration plate 16c, 16d) has the same shape.
• a plurality of convex portions 15 are separately or separately provided on the surface of the filter plate.
• the convex portion 15 of the first filtration plate 16b (or the filtration plate 16c, 16d) is in contact with the back surface of the other filtration plate 16b (or the filtration plate 16c, 16d).
• the filtration plate members overlap with each other, and the columnar portions 18b form columnar portions 18c and 18d).
• the projections 15 are integrally formed on the surfaces of the filtration plate members 16b to 16d.
• the projections 15 may be integrally provided on the surfaces of the filtration plate members 16b to 16d by fixing other parts to the filtration plate members 16b to 16d by thermal spraying or an adhesive.
• the pressing means 17b (or the pressing means 17c, 17d) is disposed at the bottom of the filter unit 10b (or the filter unit 10c, 10d)
• a bottom plate portion, a pressure plate disposed at the top of the filter portion, a support bolt attached to the bottom plate portion and fixed at a central position and extending in the direction of the axis CL, and a nut screwed on the support bolt Have /!
• the plurality of filtration plate members 16b, the filtration plate members 16c and 16d) are sandwiched from both directions in the direction of the axis line CL, and the whole is integrated. Also, if the holding plate is removed by loosening the nut, the plurality of filtration plate members 16b and 24f can separate the filtration plate members 16c and 16d) into pieces.
• FIG. 15 is a diagram showing experimental data such as the thickness of the filtration plate and the aperture ratio.
• FIG. 15 (A) shows a conventional filter section in which a plurality of annular plate members are stacked and a washer (spacer) is sandwiched between the plate members to form an opening.
• the gap size d of the opening 19 can be made minute. Since the thickness t of the filter plate 16 can be reduced compared to the conventional case, it is possible to increase the aperture ratio of the filter unit 10 S.
• the conventional product Fig. 15 (A)
• the present invention FIGGS. 15 (B) and (C)
• the power ratio S is greatly improved.
• FIG. 16 is a diagram showing other experimental data on the thickness of the filtration plate, the gap size of the openings, and the aperture ratio.
• the conventional product in FIG. 16 is the same as the conventional product shown in FIG. 15 (A). That is, the conventional product is a filter portion in which an opening is formed by stacking a plurality of annular plate members and sandwiching a washer (spacer) between the plate members.
• the thickness t of the filtration plate material is the thickness of the outer ring material 16a2.
• the gap dimension d of the aperture is the gap dimension d of the aperture 19a formed by the outwardly projecting piece 45 (i.e., the convex portion 15a) of the inner ring member 16al.
• the gap dimension d of the openings can be reduced.
• the thickness t of the filtration plate can be reduced, the aperture ratio is increased and the filtration efficiency is improved.
• FIG. 17 is a graph showing the particle size distribution when an experiment was conducted with the filtration device 1 of the first example.
• the horizontal axis and the vertical axis indicate the particle size and particle size distribution of the particles, respectively.
• the raw water before filtration contained particles with a particle size distribution of !! to 400 m.
• the particle size distribution of the particles contained in the filtered water (curve L2) after filtration by the filtration device 1 is;! To 48 m. Therefore, in the filtration device 1, particles in the range of 49 to 400 * 111 are removed, and it can be seen that a highly accurate filtration function is exhibited.
• the filtration plate members are pressure-welded by the pressing means at the positions of the respective convex portions to form the columnar portions. Since the plurality of columns support the filter, the rigidity of the entire filter is increased. As a result, the openings formed between the column-like portions maintain their predetermined shape and stabilize their size, and the height is high. Accurate filtration function is exhibited.
• a plurality of filter plates of the same or different shapes are laminated,
• the filter section is excellent in reproducibility after disassembly and assembly.
• the filter section has a laminated structure, so the shape can be designed arbitrarily. By increasing or decreasing the number of filter plates, the filtration area can be freely adjusted, which is convenient in design. If a part of the filter section is damaged, only the damaged filter plate can be replaced, and the remaining filter plate can be reused as it is.
• the entire filter section can be broken apart. Therefore, the filtering function can be restored to the initial state by completely removing the foreign matter adhering to the opening.
• the rigidity of the filter part is high and the gap dimension d and width dimension e of the opening are small, it is almost impossible for the filter plate to be stagnant or deformed.
• the size of the openings can be maintained to a predetermined size, and a highly accurate filtration function can be exhibited.
• the plurality of filtration plate members are pressure-welded by the pressing means, and as a result, the openings are formed. Therefore, even if force is applied to the open area due to fluid flow or particle collision, the size of the open area is stable.
• the particles removed by the filter may be valuable substances such as gold and silver.
• the filter section is disassembled and washed, it is possible to recover almost all the useful substance S.
• the filter plate material When assembling the filter unit, even if the filter plate material is slightly deformed, the filter plate material may be pressed from both directions of the axial direction by the pressing means in a state where a plurality of filter plate materials are stacked. In this way, the deformation of the filter plate is automatically corrected and a preferable laminated state is obtained.
• the material, shape, thickness and the like of the filtration plate material can be arbitrarily selected according to the user's requirements regarding the gap dimension d, width dimension e and aperture ratio of the opening.
• Filter boards are made of materials with little elastic deformation and plastic deformation, and there are few restrictions on the materials used. If the filter plate is made of metal (for example, stainless steel, titanium) or ceramic, the filter portion can be made excellent in heat resistance and corrosion resistance.
• the filter plate material of the present invention is formed of metal or ceramic, almost no particles are generated from the filter portion itself, and clean filtered water can be obtained.
• the present invention is applicable to a filtering device for removing fine particles contained in a fluid such as a liquid or gas.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Filtration Of Liquid (AREA)
• Filtering Materials (AREA)

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Citations (5)

• 2006
  • 2006-11-10 JP JP2006304855A patent/JP2008119579A/ja active Pending
• 2007
  • 2007-11-05 WO PCT/JP2007/071504 patent/WO2008056635A1/ja not_active Ceased

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