WO2012095992A1 - 濾過装置 - Google Patents
濾過装置 Download PDFInfo
- Publication number
- WO2012095992A1 WO2012095992A1 PCT/JP2011/050557 JP2011050557W WO2012095992A1 WO 2012095992 A1 WO2012095992 A1 WO 2012095992A1 JP 2011050557 W JP2011050557 W JP 2011050557W WO 2012095992 A1 WO2012095992 A1 WO 2012095992A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hollow
- spacer
- ring
- suction pipe
- hollow filter
- Prior art date
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 102
- 238000012856 packing Methods 0.000 claims abstract description 84
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000001914 filtration Methods 0.000 claims description 107
- 230000002093 peripheral effect Effects 0.000 claims description 39
- 238000003825 pressing Methods 0.000 claims description 20
- 238000010030 laminating Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 32
- 239000000706 filtrate Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000003780 insertion Methods 0.000 description 12
- 230000037431 insertion Effects 0.000 description 12
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000012510 hollow fiber Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000036544 posture Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
-
- 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
- B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
-
- 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
- B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
- B01D29/41—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type mounted transversely on the tube
-
- 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
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
- B01D63/082—Flat membrane modules comprising a stack of flat membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/003—Membrane bonding or sealing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/06—External membrane module supporting or fixing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/12—Specific discharge elements
- B01D2313/125—Discharge manifolds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/06—Submerged-type; Immersion type
Definitions
- the present invention relates to a filtration device in which a plurality of hollow filter sheets are stacked to increase the filtration area.
- a filtration device has been developed in which a plurality of hollow filter sheets are arranged in a stacked state, a suction pipe is inserted into a through hole provided in the hollow filter sheet, and the liquid that has permeated through the hollow filter sheet is sucked from the suction pipe.
- the filtration device described in Patent Document 1 has two suction pipes 93 inserted through central portions on both sides of a plurality of hollow filter sheets 91 stacked on each other.
- a cross-sectional view of a portion where the suction pipe 93 is inserted through the hollow filter sheet 91 is shown in FIG.
- the suction pipe 93 is connected to a central portion 91A provided inside the hollow filter sheet 91, and sucks liquid from the central portion 91A.
- the suction pipe 93 is composed of a plurality of connecting pipes 94.
- the above filtration device can increase the filtration capacity by increasing the surface area of the hollow filter sheet.
- this structure of the filtration device has a drawback that it cannot be used if a part of the hollow filter sheet is broken. This is because the liquid that is not filtered permeates through the damaged portion of the hollow filter sheet, and turbid water, sludge, and the like cannot be filtered.
- a device using many hollow fibers As a filtration device, a device using many hollow fibers has been developed. This filtration device is characterized in that it can be used even if any of the hollow fibers is damaged. This is because, even if any of the hollow fibers is broken, the filtrate is clogged in an extremely thin interior to prevent the liquid from passing therethrough.
- hollow fibers are easy to deposit hair and fibers and are vulnerable to high concentration operation, they have the disadvantage of being less susceptible to dirt than hollow filter sheets.
- the present invention has been developed to solve the above problems, and an important object of the present invention is to use a hollow filter sheet, even if a part of the hollow filter sheet is damaged.
- An object of the present invention is to provide a filtration device having excellent characteristics of both a filtration device for a hollow filter sheet and a filtration device for a hollow fiber.
- the filtration device of the present invention includes a plurality of hollow filter sheets 1 formed by laminating two filter media 11 and connecting outer peripheral edge portions, and a hollow filter sheet 1 hollow through a plurality of hollow filter sheets 1. And a suction pipe 3 connected to the portion 10.
- the filtration device transfers the liquid that is transmitted from the outer side of the hollow filter sheet 1 to the inner hollow part 10 from the hollow part 10 of the hollow filter sheet 1 to the suction pipe 3 and filters the liquid.
- the suction pipe 3 has a suction hole 4 connected to the hollow portion 10 of the hollow filter sheet 1.
- the hollow filter sheet 1 has a through hole 2 through which the suction pipe 3 is inserted, and the suction pipe 3 is inserted into the through hole 2 to connect the plurality of hollow filter sheets 1 to the suction pipe 3 in a stacked state. . Furthermore, between the hollow filter sheets 1 that are inserted into the suction pipe 3 and stacked, the inner shape is inserted into the suction pipe 3 and has a larger outer shape than the inner shape of the through hole 2 of the hollow filter sheet 1. The ring-shaped packing 5 is sandwiched, and with this ring-shaped packing 5, the gap between the hollow filter sheet 1 and the suction pipe 3 is sealed in a watertight structure.
- a hollow portion 10 is provided between two filter media 11, and a spacer 12 having an uneven surface is disposed in the hollow portion 10.
- the packing 5 presses the two filter media 11 against the surface of the spacer 12, deforms the filter media 11 into a shape along the surface of the spacer 12, and allows a liquid to pass between the filter media 11 and the spacer 12. 7, and the narrow passage gap 7 is made smaller than the drainage gap 8 between the filter medium 11 and the spacer 12 that are not sandwiched by the packing 5.
- the above filtration apparatus has a feature that it can be used even if a part of the hollow filter sheet is broken while using the hollow filter sheet. That is, the above filtration device, between the two filter media, a plurality of hollow filter sheets having a surface with uneven spacers, sandwiched with packing, inserted into a suction pipe and laminated, The gap between the hollow filter sheet and the suction pipe is sealed in a watertight structure with packing, and the two filter media of the hollow filter sheet are pressed against the surface of the spacer with packing, so that the liquid passes between the filter media and the spacer. This is because a passage gap is provided, and the narrow passage gap is made smaller than the drainage gap between the filter medium and the spacer that are not sandwiched by the packing.
- the filtration device removes the filtrate contained in the liquid from the filter medium and the spacer. In order to prevent the filtrate from flowing into the suction pipe, it is blocked by a narrow passage gap formed between them. Therefore, this filtration device is effective to use the hollow filter sheet, even if a part of the hollow filter sheet breaks, the turbid water and filth that enter from this broken part are permeated through the suction pipe and discharged. Can be prevented.
- the spacer 12 can be either the mesh material 12A or the plate material 12B having an uneven surface.
- the above filtration apparatus can adjust the size of the narrow passage gap formed between the filter medium and the spacer ideally by adjusting the unevenness of the surface of the spacer.
- a filtering device using a spacer as a mesh material can reduce the manufacturing cost by using an inexpensive mesh material, and also adjust the thickness and mesh of the wire material constituting the mesh material to create irregularities on the surface of the spacer. The degree can be easily adjusted.
- a filtering device using a plate material with unevenness on the surface as a spacer can easily adjust the unevenness on the surface of the spacer by variously adjusting the shape, size, spacing, number, etc. of the unevenness provided on the surface of the plate material.
- the mesh of the mesh 12A of the spacer 12 can be 40 to 150.
- the packing 5 can be a rubber-like elastic body.
- the above filtration device ideally presses the two filter media of the hollow filter sheet against the surface of the spacer by the elastic force of the packing, which is a rubber-like elastic body, and provides a narrow passage gap between the filter media and the spacer. be able to.
- the filter medium 11 can be a flexible sheet formed by providing a filtration membrane on the surface of a nonwoven fabric.
- the above filtering device can provide a narrow passage gap by deforming the filter medium, which is a flexible sheet, into a shape along the surface of the spacer while the ring packing presses the filter medium against the surface of the spacer.
- the uncompressed thickness of the spacer 12 can be 0.2 mm to 1 mm.
- the pressing force with respect to the unit length in the circumferential direction in which the spacer 12 presses the surface of the filter medium 11 can be set to 1 kgf / cm to 6 kgf / cm.
- the packing 5 can be formed into an O-ring having a circular cross-sectional shape or a ring shape having a quadrangular cross-sectional shape.
- FIG. 6 is a sectional view taken along line VI-VI of the filtration device shown in FIG. 5.
- FIG. 6 is a cross-sectional view of the filtration device shown in FIG. 5 taken along the line VII-VII.
- FIG. 6 is a cross-sectional view of the filtration device shown in FIG. 5 taken along line VIII-VIII.
- FIG. 10 It is an expanded sectional view of the filtration apparatus shown in FIG. It is a principal part expanded sectional view of the filtration apparatus shown in FIG. It is a perspective view which shows the structure of a hollow filter sheet. It is an enlarged front view which shows the corner part of a hollow filter sheet. It is a principal part expanded sectional view of the filtration apparatus shown in FIG. 10, Comprising: It is a figure which shows the state which a narrow passage gap restrict
- FIG. 10 is a cross-sectional view of the suction pipe shown in FIG. 9, showing a state in which the narrow passage gap restricts the passage of filtrate. It is a perspective view which shows another example of a suction pipe. It is a perspective view which shows another example of a suction pipe. It is a cross-sectional view of the suction pipe shown in FIG. It is a perspective view which shows another example of a suction pipe.
- FIG. 20 is an enlarged cross-sectional view showing the positional relationship between the suction pipe shown in FIG. 19 and the through hole of the hollow filter sheet, and shows a state where the narrow passage gap restricts the passage of the filtrate. It is a principal part expanded sectional view which shows the state in which the suction pipe shown in FIG.
- FIG. 19 attracts
- FIG. 25 is a schematic perspective view illustrating a connection structure of the connection block and the connection pipe, which is the suction unit of the filtration device illustrated in FIG. 24. It is sectional drawing which shows an example of the usage example of the filtration apparatus shown in FIG.
- FIG. 4 shows an example of use of the filtration device of the present invention.
- the filtering device of the present invention is suitable for immersing in purified water tank or water tank 50 storing contaminated water, filtering liquid such as water, and sucking and discharging clear water. ing.
- the filtration device of the present invention is suitable for draining as clear water having no turbidity by being immersed in a turbid purified water tank or the like.
- the filtration device shown in FIG. 4 to FIG. 10 includes a plurality of hollow filter sheets 1 formed by laminating two filter media 11 and connecting outer peripheral edges, and a hollow filter that penetrates the plurality of hollow filter sheets 1. And a suction pipe 3 connected to the hollow portion 10 of the sheet 1.
- the suction pipe 3 is connected to the suction side of the pump 9.
- the pump 9 sucks the liquid in the suction pipe 3.
- the liquid sucked into the suction pipe 3 passes through the hollow filter sheet 1 and is filtered. That is, the pump 9 sucks the hollow portion 10 of the hollow filter sheet 1 through the suction pipe 3 and allows the liquid to pass through the hollow filter sheet 1 from the outside to the inside to filter the liquid.
- the hollow filter sheet 1 is provided with a hollow part 10 between the two filter media 11, and the hollow part 10 has an uneven surface.
- a spacer 12 is arranged.
- the outer peripheral edge portions of the two filter media 11 are heated and welded, or bonded with an adhesive to provide a hollow portion 10 inside, and a spacer 12 is sandwiched between the two filter media 11. I wear it.
- the hollow filter sheet 1 on which the two filter media 11 are heat-welded can be welded by heat-sealing the outer peripheral edge of the filter media 11 or can be ultrasonically welded.
- the filter medium 11 is a flexible sheet in which a filtration membrane is provided on the surface of a nonwoven fabric.
- the hollow filter sheet 1 shown in FIGS. 11 and 12 is provided with an adhesive portion 1A that welds or bonds the outer peripheral edge portions of two laminated filter media 11 with a predetermined width (d) along the outer peripheral edge.
- the hollow part 10 is provided inside the filter medium 11, and the non-adhesive part 1 ⁇ / b> B that is not welded or bonded to each other is provided on the outer periphery of the two filter media 11.
- This structure can effectively prevent the outer peripheral edge of the hollow filter sheet 1 from being hardened by welding or adhesion and being damaged from this portion by providing the non-adhesive portion 1B on the outer peripheral edge of the hollow filter sheet 1.
- the width (d) of the bonded portion 1A provided at the outer peripheral edge portion is 10 mm
- the width (t) of the non-bonded portion 1B is 1.5 mm.
- the width (d) of the non-adhesion portion can be 5 to 15 mm
- the width (t) of the non-adhesion portion 1B can be 1 to 5 mm.
- the hollow filter sheet 1 having this structure is obtained by sandwiching a spacer 12 having irregularities on the surface with two filter media 11, thereby providing a filter medium with irregularities on both sides of the spacer 12. 11 is supported from the inner surface, and a hollow portion 10 is provided between the two filter media 11.
- the inner space of the hollow portion 10 is specified by the thickness of the spacer 12.
- one spacer 12 is disposed between two filter media 11. Therefore, the inner space of the hollow portion 10 of the hollow filter sheet 1 is specified by the thickness of the spacer 12 disposed between the two filter media 11.
- the inner space between the hollow portions is specified by the thickness and the number of spacers sandwiched between two filter media.
- the inner space of the hollow part 10 is, for example, about 0.3 mm so that the liquid that has passed through the filter medium 11 and sucked into the hollow part 10 can flow smoothly.
- the inner space of the hollow portion can be set to, for example, 0.1 mm to 5 mm, preferably 0.1 mm to 3 mm, and more preferably 0.2 mm to 1 mm.
- the thickness of the spacer 12 disposed between the two filter media 11 can be 0.1 mm to 2 mm, preferably 0.2 mm to 1 mm.
- the filtration device of the present invention is compressed by sandwiching the hollow filter sheet 1 from both sides with a ring-shaped packing 5. At this time, the spacer 12 sandwiched between the two filter media 11 is also compressed, but the thickness of the spacer 12 here means a thickness in a state where the spacer 12 is not compressed.
- the hollow filter sheet 1 supports the filter medium 11 from the inner surface by the unevenness of the surface of the spacer 12, and provides a drainage gap 8 between the filter medium 11 and the spacer 12.
- the spacer 12 sandwiched between the two filter media 11 supports the filter media 11 from the inner surface by the irregularities provided on both surfaces.
- a drain gap 8 is provided between the irregularities of the spacer 12 and the filter media 11. It is done.
- the liquid that permeates from the outside to the inside of the filter medium 11 passes through the drainage gap 8 and flows into the suction pipe 3.
- the size of the drainage gap 8 is specified by the size of the unevenness provided on the surface of the spacer 12. Therefore, the spacer 12 sandwiched between the two filter media 11 allows the drainage gap 8 provided between the filter media 11 to smoothly flow the sucked liquid through the filter media 11. Adjust the shape and size of surface irregularities.
- the hollow filter sheet 1 in FIG. 13 uses a mesh material 12A as a spacer 12 having an uneven surface.
- the spacer 12 which is the net 12A is knitted so that the wires cross vertically and horizontally, and a gap is provided between the wires. Moreover, the surface is provided with unevenness by a structure in which the wire is knitted so as to intersect.
- plastic fibers such as polyester, polypropylene, and polyethylene can be used.
- the size of the concavities and convexities provided on the surface of the spacer 12 that is the mesh material 12A is specified by the thickness and mesh of the wire material that intersects vertically and horizontally.
- the spacer 12 which is the mesh material 12A becomes rough and rough when the wire is thickened and the mesh is reduced, and the unevenness becomes small and dense when the wire is thinned and the mesh is increased. Therefore, the net 12A determines the thickness and mesh of the wire in consideration of these matters.
- the mesh material has a wire thickness of 80 ⁇ m to 250 ⁇ m, preferably 110 ⁇ m to 190 ⁇ m, and a mesh of the mesh material of 40 to 150, preferably 60 to 100.
- the spacer can also be provided with irregularities on the surface by arranging a plurality of wire rods in a lattice pattern and connecting the intersections to each other to form a mesh shape. This spacer also adjusts the size of the unevenness according to the thicknesses and intervals of a plurality of wires arranged in a lattice pattern.
- the hollow filter sheet can use a plate material 12B having irregularities on the surface in place of the netting material as the spacer 12 having irregularities on the surface.
- the plate material 12B shown in the figure is provided with irregularities by providing innumerable convex portions 12b on the surface.
- the plate material can be provided with irregularities on the surface by providing a plurality of rows of grooves extending vertically and horizontally on the surface.
- the plate member 12B provided with innumerable convex portions 12b on the surface adjusts the size and density of the concaves and convexes by adjusting the shape of the convex portions 12b, the protruding height, the number per unit area, and the like.
- the size and density of the unevenness are adjusted by adjusting the shape, width, depth, interval and the like of the grooves.
- the hollow filter sheet 1 formed by sandwiching the spacer 12, which is the plate 12 ⁇ / b> B having an uneven surface, between the two filter media 11 is provided with the hollow portion 10 between the two filter media 11, and the spacer
- the drainage gap 8 is provided between the filter medium 11 and the spacer 12 by supporting the filter medium 11 from the inner surface with the irregularities on the surface of 12.
- the hollow filter sheet 1 has a plurality of through-holes 2 in order to pass through the suction pipe 3.
- the hollow filter sheet 1 is provided with through holes 2 at a plurality of locations on the outer peripheral portion thereof, and suction pipes 3 are inserted into the respective through holes 2 so that the plurality of hollow filter sheets 1 are sucked at a plurality of locations on the outer peripheral portion. 3 is fixed.
- the hollow filter sheet 1 shown in the figure has a rectangular outer shape as a whole, and is provided with six through holes 2 on the outer periphery.
- the rectangular hollow filter sheet 1 has through-holes 2 at the four corners, and three through-holes 2 are provided along the long sides thereof, so that six through-holes 2 are opened at the outer periphery as a whole. Provided.
- the rectangular hollow filter sheet can be provided with three or more through holes along the long side. Further, the hollow filter sheet can be provided with a rectangular outer shape as a whole and through holes at the four corners. While this structure is the simplest structure, a plurality of hollow filter sheets can be fixed to the suction pipe at a plurality of locations on the outer peripheral portion.
- the through-hole 2 is provided for inserting the suction pipe 3, its inner shape is slightly larger than the outer shape of the suction pipe 3, for example, an inner diameter that is 0.1 mm to 5 mm larger than the outer diameter of the suction pipe 3. .
- the hollow filter sheet 1 in which the spacer 12 is sandwiched is provided with a through hole 2 in the spacer 12 so that the suction pipe 3 can be inserted.
- the through hole 2 of the hollow filter sheet 1 can be provided by cutting with a cylindrical blade, for example. The cylindrical blade can cut the filter medium 11 and the spacer 12 to provide the through hole 2.
- the hollow filter sheet 1 has the shortest distance (A) between the inner peripheral edge of the through hole 2 and the outer peripheral edge of the hollow filter sheet 1, and the minimum width (W ) Of 20% or less and 40 mm or less.
- the hollow filter sheet 1 shown in the figure has a minimum width (W) of 300 mm, and the shortest distance (A) between the inner peripheral edge of the through hole 2 and the outer peripheral edge of the hollow filter sheet 1 is 30 mm.
- the shortest distance (A) between the inner peripheral edge of the through hole and the outer peripheral edge of the hollow filter sheet is set to 40 mm or less, preferably 30 mm or less, so that the outer peripheral part of the hollow filter sheet can be reliably fixed with the suction pipe.
- the suction pipe 3 is a plastic pipe made of a hard plastic such as vinyl chloride resin, and is provided with a plurality of suction holes 4 penetrating the outer peripheral surface.
- the suction pipe can be a plastic pipe other than vinyl chloride resin, or a metal pipe such as stainless steel.
- the suction pipe 3 in FIG. 9 is provided with a plurality of rows of slit-like suction holes 4 extending in the axial direction so as to penetrate the outer peripheral surface.
- the suction pipe 3 is provided with a plurality of rows of slit-like suction holes 4 at predetermined intervals on the entire circumference in parallel postures.
- the plurality of rows of suction holes 4 provided on the entire circumference are provided so as to extend in the axial direction, so that they can be connected to the suction holes 4 even if the position of connecting the hollow filter sheet 1 is shifted in the axial direction.
- the suction pipe does not necessarily need to be provided with slit-like suction holes.
- the suction pipes can be provided so as to penetrate the plurality of suction holes 4 apart in the axial direction.
- the suction pipe 3 is provided with a plurality of suction holes 4 on the entire circumference so that the suction pipe 3 can be connected to any one of the suction holes 4 even if the connection position of the hollow filter sheet 1 is shifted. That is, the plurality of suction holes 4 are arranged apart from each other in the axial direction, but by shifting the positions of the suction holes 4 provided on the entire circumference in the axial direction, the hollow filter sheet 1 connected to all the positions is provided. It can be connected.
- the suction pipe 3 is provided with a plurality of longitudinal grooves 42 extending in the axial direction in parallel on the outer peripheral surface, and is separated from the bottom of the longitudinal grooves 42 in the axial direction.
- the plurality of suction holes 4 can also be provided through. Even in the suction pipe 3, even if the connection position of the hollow filter sheet 1 is shifted, all the hollow filter sheets 1 can be connected to the suction holes 4 through the gaps formed in the longitudinal grooves 42 extending in the axial direction.
- the suction pipe 3 shown in FIGS. 19 and 20 has a porous cylindrical body 46 laminated on the outer peripheral surface thereof.
- the porous cylindrical body 46 is a cylindrical body in which an infinite number of through-holes are provided on the outer peripheral surface, and is laminated on the outer side of the plurality of suction holes 4 opened on the outer peripheral surface of the suction pipe 3.
- the suction pipe 3 shown in the drawing also has a plurality of suction holes 4 at predetermined intervals along the outer peripheral surface.
- the suction pipe 3 is also provided with a plurality of suction holes 4 provided on the outer peripheral surface at predetermined intervals so as to be displaced in the axial direction.
- the suction pipe for laminating the porous cylindrical body on the outer peripheral surface can be provided by randomly opening a plurality of suction holes on the outer peripheral surface or by penetrating through a plurality of rows of slit-like suction holes extending in the axial direction.
- a plurality of rows of longitudinal grooves 42 extending in the axial direction can be provided in parallel, and a plurality of suction holes can be provided at the bottom of the longitudinal grooves 42 so as to be separated from each other in the axial direction.
- the perforated cylindrical body 46 shown in the figure is obtained by winding a net material 46A in a cylindrical shape along the outer peripheral surface of the suction pipe 3.
- a mesh material 46A a wire mesh or a plastic mesh material can be used.
- the porous cylindrical body 46 can be easily provided by winding a sheet-like net member around the outer peripheral surface of the suction pipe 3.
- the porous cylindrical body can be a cylindrical body into which the suction pipe can be inserted, and an infinite number of through holes can be opened on the outer peripheral surface thereof.
- the suction pipe 3 in which the porous cylindrical body 46 is laminated on the outer peripheral surface is a suction pipe provided in the suction pipe 3 in a state of being inserted into the through hole 2 of the hollow filter sheet 1 as shown in FIGS.
- the hole 4 is connected to the hollow portion 10 of the hollow filter sheet 1 through the porous cylinder 46.
- this filtration device passes through the porous cylinder 46 formed by laminating the liquid that passes through the hollow portion 10 of the hollow filter sheet 1 on the outer peripheral surface of the suction pipe 3 to the suction hole 4. Can suck.
- this structure reduces the number of suction holes 4 opened in the suction pipe 3 and simplifies the processing of the suction pipe 3, while efficiently passing the liquid that passes through the hollow portion 10 of the hollow filter sheet 1 into the suction pipe. Can suck.
- the suction pipe 3 is inserted into the through holes 2 of the plurality of hollow filter sheets 1 and connected to the hollow filter sheet 1. 4 to 8, six suction pipes 3 are arranged in parallel, and each suction pipe 3 is inserted through the through hole 2 of the hollow filter sheet 1. In the illustrated filtration apparatus, six suction pipes 3 are inserted through the hollow filter sheet 1, but the number of suction pipes can be less than five or more than seven.
- the plurality of hollow filter sheets 1 are connected to the suction pipe 3 in a state of being stacked in a parallel posture.
- a ring-shaped packing 5 is provided between the hollow filter sheets 1 in order to dispose the hollow filter sheets 1 apart.
- the ring-shaped packing 5 is inserted into the suction pipe 3 and sandwiched and fixed between the laminated hollow filter sheets 1.
- the ring-shaped packing 5 has an inner shape that is inserted into the suction pipe 3 and has a larger outer shape than the inner shape of the through hole 2 of the hollow filter sheet 1.
- the ring-shaped packing 5 is sandwiched between adjacent hollow filter sheets 1 and seals the gap between the hollow filter sheet 1 and the suction pipe 3 in a watertight structure. Further, the ring-shaped packing 5 closes the suction holes 4 of the suction pipe 3 opened between the adjacent hollow filter sheets 1 in a watertight state.
- each hollow filter sheet 1 is pressed by a ring-shaped packing 5 laminated on both sides at the opening edge of the through hole 2 and sealed with a watertight structure.
- the two filter media 11 of the hollow filter sheet 1 are pressed against the surface of the spacer 12 by the ring-shaped packing 5, and the filter media 11 becomes the spacer 12.
- the narrow passage gap 7 is provided between the filter medium 11 and the spacer 12. That is, the ring-shaped packing 5 presses the filter medium 11 of the hollow filter sheet 1 from both sides, thereby deforming the filter medium 11 into a shape along the surface of the spacer 12, and a narrow passage gap between the filter medium 11 and the spacer 12. 7 is formed.
- the narrow passage gap 7 is a gap that allows the liquid to pass but restricts the passage of the filtrate D, which is a suspended solid in the liquid, and is between the filter medium 11 and the spacer 12 that are not sandwiched by the ring packing 5.
- the drainage gap 8 can be made smaller.
- FIG. 13 and FIG. 14 show a state in which the narrow passage gap 7 restricts the passage of the filtrate D, which is a floating solid in the liquid, and deposits outside the narrow passage gap 7.
- the ring-shaped packing 5 can be a rubber-like elastic body.
- This rubber-like elastic body for example, a rubber or silicon molded into a ring shape is used.
- the ring-shaped packing 5, which is a rubber-like elastic body, is elastically deformed in a state where a plurality of hollow filter sheets 1 and the ring-shaped packing 5 are inserted into the suction pipe 3 and sandwiched between each other, and the surface of the filter medium 11 is elastic Press on. As shown by a broken line in FIG. 12, the ring-shaped packing 5 presses the surface of the filter medium 11 in a ring shape at the peripheral edge of the through hole 2 of the hollow filter sheet 1, and the sandwiched portion 1X pressed in this ring shape.
- a narrow passage gap 7 is formed between the filter medium 11 and the spacer 12.
- the pressing force with which the ring-shaped packing 5 presses the surface of the filter medium 11 specifies the size of the narrow passage gap 7 formed between the filter medium 11 and the spacer 12.
- the ring packing 5 increases the pressing force that presses the surface of the filter medium 11, the narrow passage gap 7 formed between the filter medium 11 and the spacer 12 is narrowed to effectively pass the filtrate D that is a solid material. Can be limited.
- the pressing force with which the ring-shaped packing 5 presses the surface of the filter medium 11 is weakened, the narrow passage gap 7 formed between the filter medium 11 and the spacer 12 can be widened and the liquid can be efficiently transmitted.
- the pressing force with which the ring-shaped packing 5 presses the surface of the filter medium 11 allows the liquid to pass through the narrow passage gap 7 formed between the filter medium 11 and the spacer 12 efficiently. It adjusts so that it may become the magnitude
- the pressing force with which the ring-shaped packing 5 presses the surface of the filter medium 11 is adjusted so that the pressing force with respect to the unit length in the circumferential direction is 1 kgf / cm to 6 kgf / cm, for example.
- the circumferential length of the ring-shaped packing is the circumferential length calculated using the average value of the inner diameter and outer diameter of the ring-shaped packing.
- the above hollow filter sheet 1 is deformed along the surface of the spacer 12 so that the filter medium 11 is deformed along the surface of the spacer 12 with the ring-shaped packing 5 sandwiched from both sides.
- a small narrow passage gap 7 is formed.
- the hollow filter sheet 1 is deformed so that the spacer 12 itself is crushed by the pressing force of the ring-shaped packing 5, the surface unevenness is reduced, and a narrow passage gap 7 smaller than the drain gap 8 is formed. .
- the narrow passage gap 7 formed in the sandwiching portion 1X pressed by the ring-shaped packing 5 is sucked into the suction pipe 3 from the hollow portion 10 of the hollow filter sheet 1 as shown in FIGS.
- the liquid component to be permeated is allowed to pass through, but the passage of the filtrate D, which is a suspended solid in the liquid, is restricted to effectively prevent the filtrate D from flowing into the suction pipe 3.
- the outer periphery welded portion of the hollow filter sheet 1 is peeled off, or the filter medium 11 Even if the surface of the filter is partially opened due to damage or the like, and turbid water or sludge enters the hollow filter sheet 1 from the opening, as shown in FIGS. 13 and 14, turbid water or sludge
- the filtered material D which is a solid component, is blocked by the narrow passage gap 7 and accumulated, and the filtered material D is effectively prevented from being sucked into the suction pipe 3.
- the filtrate D which is a solid component of muddy water or sludge, is restricted from passing to the suction pipe 3 side by the narrow passage gap 7 indicated by cross-hatching A in FIGS. It is an outer region, and collects and accumulates at the boundary portion between the hollow filter sheet 1 indicated by cross-hatching B in FIGS. 15 and 20, and the filtrate D is sucked into the suction pipe 3. There is no.
- the 9 and 10 uses an O-ring 13 for the ring-shaped packing 5.
- the O-ring 13 is in close contact with the surface of the hollow filter sheet 1 to seal the side surface of the hollow filter sheet 1 in a watertight state.
- a plurality of ring-shaped packings 5 are provided between adjacent hollow filter sheets 1, and a ring-shaped spacer 6 is sandwiched between the ring-shaped packings 5.
- the ring-shaped spacer 6 shown in the drawing is made of resin, and the ring-shaped packing 5 of the O-ring 13 is in close contact with both side surfaces.
- the ring-shaped spacer can be a metal ring.
- the ring-shaped spacer 6 has a disk shape with a predetermined thickness, the inner diameter is substantially equal to the outer diameter of the suction pipe 3, the outer diameter is substantially equal to the outer diameter of the O-ring 13, and the O-rings are formed on both sides of the plane.
- a ring-shaped packing 5 made of 13 is in close contact.
- interval of the adjacent hollow filter sheet 1 can also be adjusted with the thickness of the ring-shaped spacer 6.
- the interval between the hollow filter sheets 1 can be adjusted to the optimum value by the ring-shaped spacer 6 while the O-ring 13 having a circular cross section is thinned.
- the filtering device does not necessarily need to be provided with a ring-shaped spacer.
- a plurality of ring-shaped packings and hollow filter sheets are alternately stacked, and with this ring-shaped packing, the gap between the hollow filter sheet and the suction pipe can be sealed in a watertight structure.
- the ring-shaped packing 5 that is the cylindrical ring 25 is manufactured by, for example, molding a rubber-like elastic body such as rubber or silicon into a cylinder having a predetermined thickness and cutting it into a predetermined length.
- the cylindrical ring 25 is sealed in a watertight state by bringing both end surfaces into close contact with the side surface of the hollow filter sheet 1.
- the length of the ring-shaped packing 5 that is the cylindrical ring 25 is specified so that the interval between the adjacent hollow filter sheets 1 is an optimal interval.
- the structure which uses the ring-shaped packing 5 as the cylindrical ring 25 can arrange a plurality of hollow filter sheets 1 at optimum intervals while simply and easily laminating them in a parallel posture.
- the interval between the hollow filter sheets 1 stacked on each other can be narrowed so that many hollow filter sheets 1 can be inserted into the suction pipe 3.
- the interval between the hollow filter sheets 1 is set to an interval at which the adjacent hollow filter sheets 1 are not in close contact with each other by suction from the suction pipe 3, for example, 5 mm to 10 mm.
- the optimum value of the interval between the hollow filter sheets varies depending on the thickness and flexibility of the hollow filter sheet.
- the exterior case 30 shown in the figure has a first plate 31 that is a plate-like metal plate and a second plate 32 that is a metal plate bent into a groove shape, and a plurality of hollow filters inside.
- a storage portion 35 for storing the sheet 1 is provided. Therefore, the outer case 30 including the first plate 31 and the second plate 32 has a larger outer shape than the hollow filter sheet 1.
- the second plate 32 is formed in a groove shape by providing side wall portions 33 on both sides.
- the exterior case 30 is formed as a cylindrical exterior case 30 that is open at the top and bottom by connecting the front end portions of the side wall portions 33 provided on both sides of the second plate 32 to the side edge portions of the first plate 31.
- the second plate 32 is provided with a bent piece 34 bent outward at the tip of the side wall 33, and a set screw 40 penetrating the bent piece 34 and both side edges of the first plate 31.
- the first plate 31 and the second plate 32 are connected to each other via a nut 41.
- the illustrated outer case 30 is provided with a notch 38 at the lower ends of the first plate 31 and the second plate 32 so that a gap 39 is formed in a state where the outer case 30 is installed at the bottom of the water tank 50.
- the outer case can be held in an upright position by connecting a support leg to the lower end so that the filtering device does not fall down.
- the first plate 31 and the second plate 32 are metal plates.
- the exterior case can be manufactured by using one of the first plate and the second plate, or both of them by a hard plastic such as vinyl chloride resin.
- the first plate 31 and the second plate 32 are arranged at both ends of the suction pipe 3, and the first plate 31 and the second plate 32 are connected by the suction pipe 3, so that the hollow in the stacked state is provided.
- the filter sheet 1 is fixed in a sandwiched state. That is, in the illustrated filtration device, the suction pipe 3 is used in combination with a connecting tool that connects the first plate 31 and the second plate 32, while the first plate 31 and the second plate 32 of the outer case 30 are used, The laminated hollow filter sheet 1 is fixed in a sandwiched state.
- the exterior case 30 is provided with a plurality of insertion holes 36 and 37 through which the suction pipe 3 is inserted through the first plate 31 and the second plate 32, which are both surfaces, so as to be separated from each other vertically.
- the filtration apparatus shown in the figure connects the six suction pipes 3 to the laminated hollow filter sheet 1, so that the first plate 31 and the second plate 32 have six insertion holes 36 and 37 respectively. Yes.
- the closing plate 15 is fixed to the outer surface of the insertion hole 36 of the first plate 31.
- the closing plate 15 has a larger outer shape than the insertion hole 36, and the insertion hole 36 of the first plate 31 is closed with the closing plate 15.
- the closing plate 15 is fixed to the first plate 31 at the opening edge portion of the insertion hole 36 via the first plate 31, a set screw 20 penetrating the closing plate 15, and a nut 21 screwed into the set screw 20. ing.
- the closing plate 15 is provided inside the insertion hole 36 and is provided with a ring-shaped positioning recess 16 into which one end of the suction pipe 3 is inserted and connected. As shown in FIG.
- the suction pipe 3 has one open end fitted into the positioning recess 16 of the closing plate 15 and fixed.
- the tip of the suction pipe 3 inserted into the positioning recess 16 is provided with a step so as to reduce its outer diameter, and the protruding portion 3A that protrudes thinly is substantially equal to the inner diameter of the positioning recess 16 and is fixed in place.
- the closing plate 15 to which the suction pipe 3 is fixed is located at the center of the positioning recess 16 and opens a suction hole 17 communicating with the suction pipe 3.
- the suction pipe 3 has a connection pipe 18 connected to the suction hole 17 of the closing plate 15 in order to suck the inside by the pump 9.
- the suction pipe 3 has the other opening end closed by the closing portion 14, and the tip portion protrudes outside from the insertion hole 37 of the second plate 32. .
- the suction pipe 3 is connected to the second plate 32 via a sandwiching member 26 connected to a tip portion protruding from the second plate 32.
- the suction pipe 3 is provided with a female screw hole 14 ⁇ / b> A into which a set screw 29 for connecting the clamping member 26 is screwed on the front end surface of the closing portion 14 fixed to the front end.
- the clamping member 26 includes a circular support plate 27 having an outer diameter larger than the outer diameter of the closing portion 14, and a pressing ring 28 disposed between the outer peripheral portion of the support plate 27 and the second plate 32.
- the support plate 27 has an insertion hole 27A through which a set screw 29 is inserted at the center.
- the clamping member 26 shown in the drawing has the pressing ring 28 as a separate member from the supporting plate 27 and is fixed to the outer peripheral edge of the supporting plate 27.
- the clamping member is formed by integrally forming the pressing ring and the supporting plate. You can also
- a set screw 29 that penetrates the support plate 27 is screwed into the closed portion 14 of the suction pipe 3 and fixed, and the second plate 32 is pressed by the pressing ring 28 via the support plate 27 fixed to the suction pipe 3.
- the first plate 31 and the second plate 32 facing each other are fixed at a predetermined interval. Therefore, the thickness of the press ring 28 is such that the interval between the first plate 31 and the second plate 32 is an interval at which the hollow filter sheet 1 laminated via the ring-shaped packing 5 can be sandwiched in a close contact state. Designed to a predetermined thickness.
- the first plate 31 and the second plate 32 facing each other can be always connected at a predetermined interval by molding the pressing ring 28 with a hard member.
- the pressing ring can be formed by a member that can be elastically deformed, such as a rubber-like elastic body or a coil spring, and can elastically press the first plate and the second plate.
- a member that can be elastically deformed such as a rubber-like elastic body or a coil spring
- the ring-shaped packing disposed between the first plate and the second plate and the hollow filter sheet can be sandwiched with a predetermined pressing force.
- the suction pipe 3 is inserted through a plurality of hollow filter sheets 1. Further, between each hollow filter sheet 1, a ring-shaped packing 5, a ring-shaped spacer 6, and a ring-shaped packing 5 are laminated and disposed. Further, the filtration device shown in the cross-sectional view of FIG. 9 has a ring-shaped packing 5 and a ring-shaped spacer 6 laminated and disposed on the outer side of the hollow filter sheet 1 disposed on the outermost side. In FIG. 9, a ring-shaped packing 5, a ring-shaped spacer 6, and a ring-shaped packing 5 are stacked on the outer side of the hollow filter sheet 1 disposed on the rightmost side of the suction pipe 3. In FIG.
- a ring-shaped packing 5, a ring-shaped spacer 6, and a ring-shaped packing 5 are stacked on the outer side of the hollow filter sheet 1 disposed on the leftmost side of the suction pipe 3. Thereby, the inner surface of the 1st plate 31 and the 2nd plate 32 is sealed watertight.
- the ring-shaped packing 5 that is the cylindrical ring 25 is disposed between the hollow filter sheets 1 without providing the ring-shaped spacer.
- the ring-shaped packing 5 which is the cylindrical ring 25 is disposed outside the hollow filter sheet 1 disposed on the outermost side so that the inner surfaces of the first plate 31 and the second plate 32 are watertight. It is sealed.
- a connecting pipe 18 is connected to the suction hole 17 of the closing plate 15, and an extension pipe 19 is connected to the connecting pipe 18, and the connecting pipe 18 and the extension pipe 19 are connected,
- the suction pipe 3 is connected to the pump 9.
- the connecting pipe 18 in the figure includes two branch pipe portions 18A that connect the three suction pipes 3 fixed to both sides of the outer case 30, and a connection portion 18B that connects the two branch pipe portions 18A. I have.
- the connecting pipe 18 connects the connecting portion 18 ⁇ / b> B to the extension pipe 19. In this structure, the liquid in the six suction pipes 3 connected via the connection pipe 18 can be sucked together by the pump 9.
- a bubble pipe 22 for injecting bubbles to the hollow filter sheet 1 is connected to the bottom of the outer case 30.
- the bubble pipe 22 has innumerable fine holes 22a, and when pressurized air is supplied, the air is discharged from the holes 22a to bubble the fine bubbles into the liquid.
- a bubble pipe 22 extending in the width direction of the hollow filter sheet 1 is horizontally disposed at the bottom of the outer case 30. Bubbles ejected from the bubble pipe 22 rise along the surfaces of the hollow filter sheets 1 stacked on each other, and are efficiently supplied to the entire surface of each hollow filter sheet 1.
- the filtration apparatus can also be provided with a bubble pipe extending in the stacking direction of the hollow filter sheets.
- a plurality of bubble pipes can be arranged apart from each other in the width direction of the hollow filter sheet, and can be efficiently supplied to the entire surface of the plurality of hollow filter sheets stacked together.
- the bubble pipe 22 is connected to an air supply source 24 through a supply pipe 23 as shown in FIG. This structure can remove foreign substances adhering to the surface of the hollow filter sheet 1 by bubbles bubbled.
- the first plate 31 and the second plate 32 which are the outer case 30 are connected by the suction pipe 3, and the hollow filter sheet 1 stacked via the ring-shaped packing 5 is connected to the first plate 31 and the first plate 31.
- the two plates 32 are sandwiched.
- the filtration device can also directly sandwich the hollow filter sheet laminated via the ring-shaped packing with a sandwiching member connected to one or both ends of the suction pipe.
- the filtration device shown in FIGS. 24 to 27 connects an intermediate part of a plurality of suction pipes 3 to a suction part 47, and a plurality of suction pipes 3 projecting on both sides of the suction part 47 via ring-shaped packings 5.
- a single sheet of the hollow filter sheet 1 is laminated.
- the suction portion 47 includes a plurality of connection blocks 48 that connect the suction pipes 3 and a connection pipe 18 that connects the connection blocks 48. Since the filtration device shown in the drawing includes six suction pipes 3, the suction portion 47 has six connection blocks 48 facing the six suction pipes 3, that is, three connections on both sides.
- the blocks 48 are arranged up and down, and these connecting blocks 48 are connected by a connecting pipe 18.
- connection block 48 opens a through hole 48A through which the suction pipe 3 is inserted, and the suction pipe 3 is inserted into the through hole 48A to fix the intermediate portion of the suction pipe 3 to the connection block 48. Further, the connection block 48 opens a connection hole 48 ⁇ / b> B in order to connect the connection pipe 18.
- the connection hole 48 ⁇ / b> B communicates with a through hole 48 ⁇ / b> A that penetrates the connection block 48, and the liquid in the suction pipe 3 inserted through the through hole 48 ⁇ / b> A is sucked by the connection pipe 18 from the suction hole 43 opened in the suction pipe 3. I can do it. Therefore, the suction pipe 3 is provided with the suction hole 43 opened at a position facing the connection hole 48B.
- connection blocks 48 are arranged in three upper and lower stages, and the connection block 48 arranged in the upper stage opens the connection hole 48B in the horizontal direction and downward and is connected in the middle stage.
- the block 48 opens the connecting hole 48B upward and downward, and the connecting block 48 arranged in the lower stage opens the connecting hole 48B upward and horizontally.
- the connection pipe 18 is inserted into the connection hole 48B opened in the vertical direction and the horizontal direction, and the plurality of connection blocks 48 are integrally connected.
- the connection pipe 18 includes an upper and lower connection pipe 18X that connects the upper and lower connection blocks 48 to each other, and a horizontal connection pipe 18Y that connects the left and right connection blocks 48 to each other in the upper and lower stages.
- the upper and lower connection pipes 18 ⁇ / b> X are fixed by inserting their tips into connection holes 48 ⁇ / b> B opened in the vertical direction in the connection block 48.
- the front end of the horizontal connection pipe 18Y is inserted into a connection hole 48B opened in the horizontal direction in the connection block 48 and fixed.
- the horizontal connection pipe 18Y that connects the connection blocks 48 located on the left and right of the upper stage is divided into two at the middle, and the branch block 49 is connected to the middle part.
- the extension pipe 19 is connected to the branch block 49, and the pump 9 is connected to the extension pipe 19.
- the branch block 49 opens a horizontal connection hole 49A that connects the horizontal connection pipe 18Y and a vertical connection hole 49B that connects the extension pipe 19 in order to connect the horizontal connection pipe 18 and the extension pipe 19 in communication.
- the horizontal connection hole 49 ⁇ / b> A and the vertical connection hole 49 ⁇ / b> B communicate with each other inside the branch block 49.
- the suction part 47 shown in the drawing fixes the support plates 44 on both surfaces of a plurality of connecting blocks 48 arranged vertically and horizontally.
- the support plate 44 can be, for example, a metal plate or a plastic plate.
- a plurality of connection blocks 48 and branch blocks 49 can be connected more firmly and integrally.
- the suction part does not necessarily need to be provided with support plates on both sides.
- the suction part can attach a plastic film on both surfaces instead of the support plate.
- the suction part 47 is inserted into the plurality of hollow filter sheets 1 stacked via the ring-shaped packing 5 in the suction pipe 3 protruding on both surfaces of the connection block 47.
- a clamping member 26 is fixed to the closing portion 14 on the distal end surface of the suction pipe 3 via a set screw 29.
- the clamping member 26 is fixed by screwing a set screw 29 penetrating the support plate 27 into the closing portion 14, and directly pressing the ring-shaped packing 5 with the pressing ring 28 via the support plate 27 fixed to the suction pipe 3.
- a ring-shaped pressing plate can be disposed between the ring-shaped packing disposed on the most distal end side of the suction pipe and the sandwiching member.
- the sandwiching member 26 fixed to the tip of the suction pipe 3 presses the ring-shaped packing 5 arranged on the most tip side of the suction pipe 3, and a plurality of hollows stacked via the ring-shaped packing 5.
- the filter sheets 1 are in close contact with each other.
- the suction part 47 described above connects the plurality of suction pipes 3 to each other via the connection block 48 and the connection pipe 18, and connects the connection pipe 18 to the pump 9 via the branch block 49 and the extension pipe 19. .
- the liquid in the six suction pipes 3 connected to the connection pipe 18 via the connection block 48 is sucked together by the pump 9.
- This structure has an advantage that the processing capacity of the filtration device can be improved because a single pump 9 can suck the plurality of hollow filter sheets 1 on both surfaces of the suction portion 47.
- the single suction pipe 3 is passed through the connecting block 48, and a plurality of hollow filter sheets 1 are stacked on the portions protruding from both sides, and the liquid inside the suction pipe 3 is discharged.
- Suction is performed by a connecting pipe 18 connected in the middle.
- the filtration device connects and fixes the above-described pipes, i.e., suction pipes having one end opened, to both surfaces of the connection block, and has a through hole that opens the liquid inside each suction pipe to the connection block. It can also be sucked from the connecting pipe through the connecting hole.
- This filtration apparatus sucks together the liquid in a total of 12 suction pipes connected to both sides of the connection block with a pump.
- the filtration device may store a plurality of filtration units 60 in an outer case 61 as a filtration unit 60 formed by laminating a plurality of hollow filter sheets 1 on both sides of the suction part 47. it can.
- the exterior case 61 has a total length and a width that allow a plurality of filtration units 60 to be stored in a plurality of rows.
- the exterior case 61 in FIG. 28 accommodates three sets of filtration units 60.
- the outer case 61 is provided with three rows of holding grooves 63 facing each other on the inner surface of the side wall 62 on the long side, and these holding grooves 63 are arranged on both sides of the suction portion 47, that is, on both sides.
- connection block 48 The outer protruding portion of the connection block 48 is fitted so that the filtration unit 60 can be disposed at a fixed position of the outer case 61.
- the filtration device having this structure can be installed in an ideal state by variously adjusting the number of filtration units 60 to be accommodated according to the installation location and application, that is, according to the required processing capacity.
- the filtration device according to the present invention is effective in using a hollow filter sheet, even if a part of the hollow filter sheet is damaged, the filtered matter such as floating solids entering from the damaged part passes to the discharge side. It can be used safely for a long period of time.
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Abstract
Description
以上の濾過装置は、スペーサの表面の凹凸を調整することで、濾材とスペーサとの間に形成される狭通過隙間の大きさを理想的に調整できる。とくに、スペーサを網材とする濾過装置は、安価な網材を使用して、製造コストを低減できると共に、網材を構成する線材の太さとメッシュを調整して、スペーサの表面にできる凹凸の度合いを簡単に調整できる。また、表面に凹凸のある板材をスペーサとする濾過装置は、板材の表面に設ける凹凸の形状や大きさ、間隔、個数等を種々に調整して、スペーサの表面の凹凸を簡単に調整できる。
以上の濾過装置は、ゴム状弾性体であるパッキンの弾性力によって、中空フィルターシートの2枚の濾材をスペーサの表面に理想的に押圧して、濾材とスペーサとの間に狭通過隙間を設けることができる。
以上の濾過装置は、リング状パッキンが濾材をスペーサの表面に押圧する状態で、可撓性のあるシートである濾材をスペーサの表面に沿う形状に変形させて狭通過隙間を設けることができる。
1B…非接着部
1X…挟着部
2…貫通孔
3…吸引パイプ 3A…突出部
4…吸引穴
5…リング状パッキン
6…リング状スペーサ
7…狭通過隙間
8…排水隙間
9…ポンプ
10…中空部
11…濾材
12…スペーサ 12A…網材
12B…板材
12b…凸部
13…Oリング
14…閉塞部 14A…雌ネジ孔
15…閉塞プレート
16…位置決め凹部
17…吸引穴
18…連結パイプ 18A…分岐パイプ部
18B…連結部
18X…上下連結パイプ
18Y…水平連結パイプ
19…延長パイプ
20…止ネジ
21…ナット
22…気泡パイプ 22a…孔
23…供給パイプ
24…空気供給源
25…筒状リング
26…挟着部材
27…支持プレート 27A…挿通孔
28…押圧リング
29…止ネジ
30…外装ケース
31…第1プレート
32…第2プレート
33…側壁部
34…折曲片
35…収納部
36…挿入穴
37…挿入穴
38…切欠部
39…隙間
40…止ネジ
41…ナット
42…縦溝
43…吸引穴
44…保持プレート
46…多孔筒体 46A…網材
47…吸引部
48…連結ブロック 48A…貫通孔
48B…連結穴
49…分岐ブロック 49A…水平連結穴
49B…垂直連結穴
50…水槽
60…濾過ユニット
61…外装ケース
62…側壁
63…保持溝
91…中空フィルターシート 91A…中央部
92…貫通孔
93…吸引パイプ
94…連結パイプ 94A…細筒部
94B…段差面
95…フレーム
96…ロッド
97…紐状体
D…濾過物
Claims (8)
- 2枚の濾材(11)が積層されて外周縁部を連結してなる複数枚の中空フィルターシート(1)と、複数枚の中空フィルターシート(1)を貫通して中空フィルターシート(1)の中空部(10)に連結してなる吸引パイプ(3)とを備え、
前記中空フィルターシート(1)の外側から内側の中空部(10)に透過させる液体を、中空フィルターシート(1)の中空部(10)から前記吸引パイプ(3)に移送して液体を濾過する濾過装置であって、
前記吸引パイプ(3)は、前記中空フィルターシート(1)の中空部(10)に連結される吸引穴(4)を有し、
前記中空フィルターシート(1)は、吸引パイプ(3)を挿通する貫通孔(2)を有し、貫通孔(2)に吸引パイプ(3)が挿通されて、複数枚の中空フィルターシート(1)を積層状態に吸引パイプ(3)に連結しており、さらに、吸引パイプ(3)に挿通して積層してなる中空フィルターシート(1)の間には、吸引パイプ(3)に挿通される内形であって、中空フィルターシート(1)の貫通孔(2)の内形よりも大きな外形のリング状パッキン(5)を挟着して、このリング状パッキン(5)でもって、中空フィルターシート(1)と吸引パイプ(3)との隙間を水密構造に密閉しており、
前記中空フィルターシート(1)が、2枚の濾材(11)の間に中空部(10)を設けて、この中空部(10)に、表面に凹凸のあるスペーサ(12)を配置しており、
前記リング状パッキン(5)が、2枚の濾材(11)を前記スペーサ(12)の表面に押圧して、前記濾材(11)をスペーサ(12)の表面に沿う形状に変形して、濾材(11)とスペーサ(12)との間に液体を通過させる狭通過隙間(7)を設けており、この狭通過隙間(7)を前記リング状パッキン(5)で挟着されない濾材(11)とスペーサ(12)との間の排水隙間(8)よりも小さくしてなることを特徴とする濾過装置。 - 前記スペーサ(12)が、網材(12A)、表面に凹凸のある板材(12B)の何れかである請求項1に記載される濾過装置。
- 前記スペーサ(12)の網材(12A)のメッシュが40~150である請求項2に記載される濾過装置。
- 前記リング状パッキン(5)がゴム状弾性体である請求項1ないし3のいずれかに記載される濾過装置。
- 前記濾材(11)が不織布の表面に濾過膜を設けてなる可撓性のあるシートである請求項1ないし4のいずれかに記載される濾過装置。
- 前記スペーサ(12)の圧縮されない厚さが0.2mm~1mmである請求項1ないし5のいずれかに記載される濾過装置。
- 前記リング状パッキン(5)が濾材(11)の表面を押圧する、円周方向の単位長さに対する押圧力が、1kgf/cm~6kgf/cmである請求項1ないし6のいずれかに記載される濾過装置。
- 前記リング状パッキン(5)が、横断面形状を円形とするOリング、又は横断面形状を四角形とするリング状である請求項1ないし7のいずれかに記載される濾過装置。
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CN201180064885.6A CN103476475B (zh) | 2011-01-14 | 2011-01-14 | 过滤装置 |
EP11855667.9A EP2664369B1 (en) | 2011-01-14 | 2011-01-14 | Filtration device |
JP2012552611A JP5747046B2 (ja) | 2011-01-14 | 2011-01-14 | 濾過装置 |
US13/978,807 US9889393B2 (en) | 2011-01-14 | 2011-01-14 | Filtration apparatus |
PCT/JP2011/050557 WO2012095992A1 (ja) | 2011-01-14 | 2011-01-14 | 濾過装置 |
KR1020137021361A KR101760980B1 (ko) | 2011-01-14 | 2011-01-14 | 여과장치 |
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EP (1) | EP2664369B1 (ja) |
JP (1) | JP5747046B2 (ja) |
KR (1) | KR101760980B1 (ja) |
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CN106964180A (zh) * | 2017-05-04 | 2017-07-21 | 台州学院 | 一种泥水分离的快速渗滤装置 |
WO2023243445A1 (ja) * | 2022-06-13 | 2023-12-21 | 阿波製紙株式会社 | 濾過装置 |
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US11478730B2 (en) | 2019-12-12 | 2022-10-25 | M.W. Watermark, L.L.C. | Filter press assembly |
KR102448521B1 (ko) * | 2020-11-26 | 2022-09-28 | 고등기술연구원연구조합 | 막 접촉기의 중공사 모듈 및 그의 제조 방법 |
US20220347603A1 (en) * | 2021-04-30 | 2022-11-03 | Pall Corporation | Filter disk segments |
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KR20140051824A (ko) | 2014-05-02 |
EP2664369A1 (en) | 2013-11-20 |
JPWO2012095992A1 (ja) | 2014-06-09 |
CN103476475B (zh) | 2015-08-05 |
US9889393B2 (en) | 2018-02-13 |
EP2664369B1 (en) | 2016-02-24 |
US20130284655A1 (en) | 2013-10-31 |
KR101760980B1 (ko) | 2017-07-24 |
EP2664369A4 (en) | 2014-08-20 |
JP5747046B2 (ja) | 2015-07-08 |
CN103476475A (zh) | 2013-12-25 |
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