Fan-shaped cartridge and fan-shaped cartridge housing using same

Abstract

Provided is a fan-shaped cartridge to be used for downsizing a filter element that filters a large dose of a liquid industrial raw material and for accurately and reliably estimating filtration performance such as suitability of use, usage limitation time (lifespan / filtration life), or limitation amount just by using a relatively small amount of a target liquid industrial raw material. In the present invention: a fan-shaped cartridge 1d is obtained by segmenting a cylindrical practical filter element 1, which is for causing a liquid to be filtered to flow from an outer periphery 5a side to an inner cavity 6 side and filtering the liquid to be filtered, in the direction of vertical planes H1, H2 along a cylinder center axis C-C direction of the practical filter element to obtain a short cylinder and dividing the short cylinder into a fan shape at radiating planes V1, V2, which include the cylinder center axis C-C; and segmentation planes 3d, 3d' along the direction of the vertical planes H1, H2 in the fan-shaped cartridge 1d and the division planes V1, V2 along the radiating planes V1, V2 are sealed such that the liquid does not leak.

Description

Fan-shaped cartridge and fan-shaped cartridge housing using same

[0001] The present invention relates to a sector-shaped cartridge used to extrapolate and evaluate the performance of a filter element by downscaling the filter element of the filter cartridge and conducting a performance test, a sector-shaped cartridge housing using the test piece, and a method for evaluating a filter element using the sector-shaped cartridge housing.

[0002] Various industrial liquid raw materials, particularly high-purity liquid raw materials for electronics such as photoresists and various functional paints, beverage raw materials such as mineral water, tea, and coffee, liquid chemical raw materials such as paint, ink, and pure water, abrasive raw materials used in chemical mechanical polishing (CMP), and liquid raw materials for precision electrical equipment parts used in the manufacture of multilayer ceramic capacitors, flat panel displays, and batteries, are passed through filtering materials processed into cartridges as filter elements to filter out impurities above a certain size, making the liquid homogeneous and high-quality before being used in the next process.

[0003] Filter elements used for filtering small amounts of liquid raw materials, such as industrial liquid raw materials, include disk-shaped nonwoven fabrics and membranes, or standard filter cartridges that have been miniaturized and encapsulated. When filtering small amounts of liquid, it is best to first test the disk or capsule filter you are considering with the actual amount of liquid you are using.

[0004] On the other hand, filter elements used as filtration materials for large amounts of industrial liquid raw materials for mass production mainly include cylindrical depth-type filter elements, such as nonwoven fabric laminated types in which nonwoven fabric is wrapped in a roll around a hollow, cylindrical, perforated core made of resin or metal, or thread-wound types in which thread is wound around a core, as well as cylindrical pleated-type filter elements in which nonwoven fabric, membrane, or metal mesh is pleated and wrapped around a core to increase the filtration area. These filter elements are selected from a wide range of options, with the appropriate filter material, shape, and number of elements to be installed depending on the size of the foreign matter to be removed on the mass production line, the properties of the target liquid, and the target filtration volume.

[0005] The filter cartridges 10 used for filtering large amounts of industrial liquid raw materials for mass production are typically of the cartridge type, as shown in FIG. 8, in which the filter cartridge is replaceably housed in a filter housing 100 consisting of a metal housing cover 101 and a housing base 102, each having an air vent opening 14 for air bleeding, or of the capsule type, in which the filter cartridge is housed in a resin capsule (not shown) as an integrated unit.

[0006] The filter cartridge 10 is a cartridge in which the filter element 1 surrounds and covers the inner core 6a having many holes, and is also enclosed, if necessary, by a perforated cover (not shown) that prevents deformation of the filter element 1. １ As shown by , the liquid raw material is injected into the housing cover 101, and is then pumped into the filter cartridge 10, where it is filtered by passing through the inner core 6a. ２ As shown in Fig. 1, the filter cartridge 10 flows out of the outlet 16 and is sent to a predetermined process. Most filter cartridges 10 have an outer diameter of 60 to 80 mm, with a maximum of about 130 mm, and an overall length of 1 to 40 inches, and most often 10 to 40 inches.

[0007] In an actual production line, one filter cartridge 10 often filters several tons to over ten tons of industrial liquid raw material per batch.

[0008] If filter selection tests were to be conducted on an actual scale on a mass-produced production line, a huge amount of actual liquid would be required. Therefore, filter selection is usually performed by using a small amount of a single-layer filter made by punching out the filtration material of the filter element of the filter cartridge under consideration into a disk shape, or by using a small-scale cartridge that is 1 to 5 inches long, a fraction of the size or a few tenths of the size.

[0009] However, filter selection tests that simply use a single layer of filter media in the filter element of a filter cartridge do not reproduce the effects on the filter element during cartridge processing, such as the compaction of the filter media and nonwoven fabric used in the filter element, or changes in the flow path due to their shape, and therefore are not easily reproducible in mass production.On the other hand, filter selection tests that use small cartridges for small-scale selection tests may still require filtering tons of industrial liquid raw materials, even if the scale is reduced.

[0010] For this reason, it is desirable to further downsize and miniaturize the filter cartridges used in mass production while maintaining the filter element state close to that of the filter cartridges used in mass production, and to improve the filter so that selection tests can be performed on a laboratory scale.

[0011] Meanwhile, Patent Document 1 discloses a scaling tool for reproducing the filtration characteristics of a large-scale filtration device, the scaling tool including: a housing having a liquid inlet and a liquid outlet; and a filter receiving area, the filter receiving area being in liquid communication with the liquid inlet and the liquid outlet and configured to accommodate a membrane having one or more pleats, the filter receiving area being defined by a rigid wall structure configured to retain the one or more pleats of the membrane and to compress the pleats by an amount effective to proportionally reproduce the filtration performance of the large-scale filtration device. This scaling tool can evaluate the performance of pleated-type filter elements, but is not suitable for evaluating the performance of depth-type filter elements.

[0012] JP 2023-19871 A

[0013] The present invention has been made to solve the above-mentioned problems, and has an object to provide a sectorial cartridge that can be used to downsize depth-type filter elements, pleated-type filter elements, etc. that filter large amounts of liquid industrial raw materials, and to accurately and reliably estimate the filtration performance, such as the suitability of use, limit of use time (life, filtration life), or limit amount, for any type of filter element, by using only a relatively small amount of the target liquid industrial raw material; a sectorial cartridge housing that uses the sectorial cartridge; and a method for evaluating a filter element that uses the sectorial cartridge housing.

[0014] The fan-shaped cartridge made to achieve the above-mentioned object is a fan-shaped cartridge in which a cylindrical practical filter element, which filters the liquid to be filtered by causing it to flow from the outer periphery to the inner cavity, is left exposed in its vertical plane along the cylindrical central axis direction or is divided in the vertical plane direction to form a short cylinder, and is shaped like a fan divided into sectors by a radial plane including the cylindrical central axis, and each surface of the divided plane along the vertical plane direction and the divided plane along the radial plane direction in the fan-shaped cartridge is sealed to prevent leakage of the liquid.

[0015] This sector-shaped cartridge may be sealed by having each surface of the dividing surface and the dividing surface heat-sealed to the cartridge storage section in the housing, caulked with a caulking material, adhered with an adhesive, sealed with a sealant, and / or heat-sealed to a plate.

[0016] In this sector-shaped cartridge, the filter element may be a thread-wound filter element, a depth-pleated filter element, a pleated filter element, or a depth filter element.

[0017] In this fan-shaped cartridge, for example, the caulking material, adhesive, sealant, and / or plate are made of the same adhesive material and / or resin that secures the resin nonwoven fabric or thread that constitutes the filter element.

[0018] The sectorial cartridge is shortened to, for example, 1 / 10 to 1 / 50 of the 10-inch length of the practical filter element, and the included angle between the dividing surfaces is less than 360°, preferably 30 to 90°.

[0019] In this sector-shaped cartridge, the opening at the tapered tip of the plate may be joined in a liquid-tight manner to a disk-shaped sealing seat having a through-hole in the center.

[0020] This sector-shaped cartridge may have a thick bottom portion extending from the bottom side of the sealing seat, and an O-ring having a diameter larger than the cylindrical diameter of the thick bottom portion may be disposed around the thick bottom portion.

[0021] The fan-shaped cartridge housing made to achieve the above-mentioned object is characterized in that it is liquid-tightly integrated with a cartridge storage section within the housing into which the fan-shaped cartridge is fitted and stored, a fan-shaped housing main body having an inlet opening and an outlet opening for the liquid that are opened in the cartridge storage section within the housing and face the outer periphery and inner cavity side of the fan-shaped cartridge, respectively, and a housing cap that covers the fan-shaped housing main body and has an injection port that closes the opening and allows liquid to be injected that flows from the outer periphery side to the inner cavity side of the fan-shaped cartridge.

[0022] This sector-shaped cartridge housing may be sealed by having each surface of the dividing surface and the dividing surface heat-sealed to the cartridge storage section within the housing, caulked with a caulking material, adhered with an adhesive, sealed with a sealant, and / or heat-sealed to a plate.

[0023] The sector-shaped cartridge housing may be configured such that an opening at the tapered tip end of the plate is joined in a liquid-tight manner to a disk-shaped sealing seat having a through-hole in the center.

[0024] This sector-shaped cartridge housing may have a thick bottom portion extending toward the bottom side of the sealing base, an O-ring having a diameter larger than the cylindrical diameter of the thick bottom portion surrounding the thick bottom portion, and the thick bottom portion together with the O-ring being liquid-tightly fitted into the sector-shaped housing main body.

[0025] In order to achieve the above object, a method for manufacturing a sector-shaped cartridge housing is provided in which a cylindrical filter element, through which a liquid to be filtered flows from the outer periphery to the inner cavity, is left exposed along a plane perpendicular to the cylindrical central axis or cut and divided along the vertical plane to form short cylinders, and further divided into sectors along a radial plane including the cylindrical central axis, and the sectors are prepared by sealing the exposed vertical planes or the divided planes along the vertical planes and the divided planes along the radial planes so as to prevent leakage of the liquid; and a housing in which the sector-shaped cartridge is fitted and accommodated. The method comprises the steps of preparing a sectorial housing body having a cartridge storage section and an inlet opening and an outlet opening for the liquid that are opened in the cartridge storage section within the housing and face the outer periphery and inner cavity side of the sectorial cartridge, respectively, and fitting the sectorial cartridge into the cartridge storage section within the housing to store it; and preparing a housing cap that covers the sectorial housing body and has an inlet for injecting liquid that flows from the outer periphery side of the sectorial cartridge to the inner cavity side while closing the opening, and closing the sectorial housing body with the housing cap to integrate the two.

[0026] The method for manufacturing this sector-shaped cartridge housing may be such that the surfaces of the dividing surface and the dividing surface are heat-sealed to the cartridge storage portion within the housing, caulked with a caulking material, adhered with an adhesive, sealed with a sealant, and / or heat-sealed to a plate.

[0027] A method for evaluating a filter element that has been made to achieve the above-mentioned object is a method for evaluating a filter element using a sectorial cartridge housing, and includes the steps of filtering a liquid to be filtered by the filter element by flowing it into the sectorial cartridge housing through the inlet and flowing it out through the outlet opening, and sampling the filtrate of the liquid to be filtered from the sectorial cartridge, or measuring the differential pressure caused by the liquid to be filtered, i.e., the difference between the pressure on the inlet side (primary pressure) and the pressure on the outlet side (secondary pressure) of the filter element, the filtration time, and / or the amount of filtrate, and evaluating the performance of the filter element with the liquid amount upscaled to a dosage.

[0028] The sector cartridge can be used to evaluate the filtration performance of any type of filter element, including depth-type and pleated-type filter elements, used in the filtration of large volumes of liquid industrial feedstock.

[0029] With this fan-shaped cartridge, a practical depth-type filter element or pleated-type filter element is downsized by dividing it vertically along the cylindrical central axis to form a short cylinder and then dividing it into fan shapes on a radial plane including the cylindrical central axis. Therefore, even if a large practical amount of the target liquid industrial raw material is not filtered, by using only a relatively small amount, it is possible to accurately and reliably extrapolate and estimate or evaluate the filtration performance of the filter element, such as its usability and its limit time or limit amount.

[0030] Therefore, by using this fan-shaped cartridge, it is possible to estimate and evaluate the filtration performance of practical depth-type filter elements and pleated-type filter elements on a small scale with high efficiency using a relatively small amount of target liquid industrial raw material and a small amount of actual liquid, which is not only economical but also reduces waste and improves workability, thereby saving time and contributing to the achievement of the Sustainable Development Goals (SDGs).

[0031] The sectorial cartridge housing using this sectorial cartridge and its manufacturing method enable highly efficient, accurate, and reliable extrapolation of filtration performance to estimate and evaluate it on a small scale. Moreover, because this sectorial cartridge is molded by cutting out a portion of a mass-produced cartridge, it is possible to evaluate the filtration performance of a wide variety of depth-type and pleated-type filter elements with different diameters, cylindrical lengths, and filter element types and materials.

[0032] This filter element evaluation method using a cartridge allows accurate and reliable extrapolation, estimation, and evaluation, making it possible to review and select filter elements so that they are effectively optimized with smaller amounts of actual liquid. This not only leads to improvements in the production lines for the target liquid industrial raw materials and the final products that use them, but also contributes to improved quality and reliability, as well as improved production efficiency, production speed, and yield.

[0033] Fig. 1 is a schematic perspective view showing a state in which a fan-shaped cartridge to which the present invention is applied is being cut out from a filter element of a filter cartridge. Fig. 2 is an exploded perspective view of a fan-shaped cartridge housing to which the present invention is applied. Fig. 3 is an exploded perspective view of another fan-shaped cartridge housing to which the present invention is applied. Fig. 4 is a graph showing the correlation between the fan-shaped cartridge and the existing cartridge in terms of elapsed time and pressurized pressure when a test liquid to be filtered is passed through a fan-shaped cartridge housing having a fan-shaped cartridge of an embodiment to which the present invention is applied, and a performance test cartridge of a reference example which is a commercially available existing cartridge (LPA Capsule, manufactured by ROKI TECHNO Co., Ltd.) to which the present invention is not applied. 1 is a graph showing the difference in reproducibility between an existing cartridge and an existing miniaturized element in terms of the elapsed time and applied pressure when a test liquid to be filtered is passed through a performance test cartridge that is a reference example and is a commercially available existing cartridge (manufactured by ROKI TECHNO CORPORATION; LPA capsule) to which the present invention is not applied, and a comparative example, a stacked filter element (existing miniaturized element (φ25 mm) to which the present invention is not applied). 1 is a graph showing the difference in reproducibility between an existing cartridge and an existing miniaturized element in terms of the elapsed time and applied pressure when a test liquid to be filtered is passed through a performance test cartridge that is a reference example and is a commercially available existing cartridge (manufactured by ROKI TECHNO CORPORATION; LPA capsule) to which the present invention is not applied, and a filter medium compression sample of a stacked and compressed filter element (existing miniaturized element (φ25 mm)) to which the present invention is not applied. 1 is a graph showing the difference in reproducibility between an existing cartridge and a filter medium compressed sample of an existing miniaturized element in terms of pressure.A performance test cartridge is a reference example, which is a commercially available existing cartridge (manufactured by ROKI TECHNO Co., Ltd.; LPA capsule), to which the present invention is not applied, and a sample, which is a stacked and compressed filter element (existing miniaturized element (φ25 mm)), to which the present invention is not applied, and which is a comparative example, is subjected to leak-proof treatment on the end surface after compressing the filter medium, and the test liquid to be filtered is passed through the existing cartridge and the filter medium compressed leak-proof treatment sample in terms of elapsed time and pressurized pressure.A partially exploded cross-sectional view showing the outline of a filtration device that filters a liquid to be filtered by sealing an existing cartridge in an existing filtration housing.

[0034] Hereinafter, embodiments for carrying out the present invention will be described in detail, but the scope of the present invention is not limited to these embodiments.

[0035] A sector-shaped cartridge 1d to which the present invention is applied will be described with reference to FIG. 1, which shows a sector-shaped cartridge 1d obtained from a practical filter element 1 as an example.

[0036] As shown in FIG. 1(d), the sector-shaped cartridge 1d is used to evaluate the filtration performance of a liquid by a depth-type filter element, which is the filter element 1. １ ・H ２ The dividing plane 3d and 3d' along the radiating plane V １ ・V ２ The dividing surfaces 4d and 4d' along the line 4d and 4d' are heat-sealed, caulked with a caulking material, bonded with an adhesive, sealed with a sealant, and / or sealed with a plate to prevent liquid leakage.

[0037] As shown in FIG. 1( a), this filter element 1 is cylindrical, with the filter element 1 surrounding the outer periphery of a cylindrical, perforated inner core 6a having a hollow lumen 6, and the outer periphery may be covered with a perforated cover (not shown) as necessary. The exposed surfaces of the nonwoven fabric 2 on the upper and lower end faces of the cylinder are heat-welded, caulked with a caulking material, bonded with an adhesive, sealed with a sealant made of the same thermoplastic resin as the nonwoven fabric 2, and / or sealed with a plate.

[0038] The filter element 1 is a depth filter element such as a thread-wound depth filter element or a roll-shaped depth filter element made of a laminate of nonwoven fabric, such as melt-blown nonwoven fabric, wound into a roll, or a pleated filter element or depth-pleated filter element made by pleating nonwoven fabric or a membrane to increase the surface area per volume.

[0039] The sector-shaped cartridge 1d is produced from a practical filter element 1 from which the perforated inner core 6a and the perforated cover have been removed.

[0040] The sector-shaped cartridge 1d is arranged along the cylindrical central axis CC of the filter element 1 and its vertical plane H １ Direction and H ２ The filter element is divided into a short cylindrical body 1b of the filter element with the outer periphery 5b and the inner cavity surface 6b remaining as shown in FIG. 1(b). The radial plane V including the cylindrical central axis CC is formed. １ and V ２ The divided surfaces 3c and 3c' corresponding to the divided surfaces 3b and 3b' are divided into a sector shape by the １ and V ２ 1(c) , the cut section 1c has a shape with a thickness Lc, which is the same as Lb, and has divided surfaces 4c and 4c' along the cut section 1c, an outer peripheral arc surface 5c corresponding to the outer periphery 5b, and an inner bore arc surface 6c corresponding to the inner bore surface 6b. The divided surfaces 3d and 3d' corresponding to the cut surfaces 3c and 3c' are sealed by heat welding and / or bonding to fan-shaped plates 7d and 7d' extending toward the central axis C-C from the divided surfaces 3d and 3d', and are sealed by heat welding and / or bonding to rectangular plates 8d and 8d' extending toward the central axis C-C from the divided surfaces 4d and 4d' corresponding to the cut surfaces 4c and 4c'. This allows the liquid to flow exclusively from the outer peripheral arc surface 5d corresponding to the outer peripheral arc surface 5c to the inner bore arc surface 6d corresponding to the inner bore arc surface 6c without leakage (see FIG. 1(d) using plates 7d and 7d' and plates 8d and 8d' as an example).

[0041] The materials of the plates 7d, 7d' and 8d, 8d' may be the same as or different from the material of the filter elements actually used, but are preferably the same.

[0042] Instead of sealing the dividing surfaces 3d, 3d' and 4d, 4d' with plates 7d, 7d' and 8d, 8d', they may be heat-welded to the sectorial housing body 23, caulked with caulking material, glued with an adhesive, or sealed with a sealant (not shown).

[0043] The filter element 1 is used depending on the object and purpose of filtration. The material of the filter element 1 includes, in the case of a depth-type filter element in which a nonwoven fabric or the like is wound around a perforated core material in a roll shape, a nonwoven fabric formed by spunbonding, meltblown, or spunlace, in the case of a depth-type filter element in which a thread or the like is wound around a perforated core material to ultimately form a cylindrical shape, yarns such as twisted yarns and untwisted yarns, and in the case of a pleated-type filter element in which a nonwoven fabric, membrane, or wire mesh is pleated around a perforated core material to ultimately form a cylindrical shape to increase the filtration area, the above-mentioned nonwoven fabrics, woven fabrics, nets, and membranes such as porous membranes can be used. Examples of such nonwoven fabrics, woven fabrics, nets, threads, and membranes include polyolefin resins such as polyethylene and polypropylene; fluororesins such as polytetrafluoroethylene, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, tetrafluoroethylene-ethylene copolymer, polyvinylidene fluoride, polychlorotrifluoroethylene, and chlorotrifluoroethylene-ethylene copolymer; polyesters such as polyethylene terephthalate; acrylic resins such as polymethyl methacrylate; thermoplastic resins such as polysulfone, polyethersulfone, polyphenylethersulfone, polyphenylene sulfide, polyacetal, polyvinyl alcohol, polystyrene, polycarbonate, and polyamide. The filter element 1 may be made of an inorganic material such as glass fiber or diatomaceous earth. The filter element 1 may also be made of a metal filter such as stainless steel.

[0044] When the divided surfaces 3d and 3d' and the divided surfaces 4d and 4d' of the sectorial cartridge 1d are heat-welded to the sectorial housing main body 23 as described below, heat welding is achieved by using a thermoplastic resin for the material of the filter element 1. When the divided surfaces 3d and 3d' and the divided surfaces 4d and 4d' are caulked or sealed to the sectorial housing main body 23 with a caulking material or a sealant, the caulking material or sealant may be made of the same resin as the material of the filter element 1, and preferably made of the raw materials constituting the filter element, such as the resin, filter membrane, or thread material, particularly the thermoplastic material described above.

[0045] With regard to the thickness Ld of the sectorial cartridge 1d, volume is more important than thickness, but since many practical filter elements have a total length of, for example, 1 to 40 inches, it is preferable that the filter element 1 be a short cylinder with a length that is 1 / 10 to 1 / 50 of the total length when converted to a 10-inch length. If the absolute value is less than 5 mm, it may become impossible to perform processing such as heat welding between the parting surfaces 3d and 3d' and the parting surfaces 4d and 4d'.

[0046] In the sector-shaped cartridge 1d, the included angle θ formed by the dividing surfaces 4d and 4d' is less than 360°, preferably 30° or more and less than 180°, more preferably 30 to 90°, for example 45°.

[0047] Specifically, the sector-shaped cartridge 1d can be prepared as follows.

[0048] First, a cylindrical filter element 1 to be evaluated is prepared, in which the liquid to be filtered flows from the outer periphery 5a to the inner cavity 6, i.e., the inner core 6a (see FIG. 1(a)). For example, a depth-type filter element 1 made into a short cylinder will be described.

[0049] The filter element 1 is mounted on a vertical plane H perpendicular to its cylindrical central axis C-C. １ and H ２The filter element 1 is cut and divided along the lines 11a to 11c to form a short cylindrical body 1b (see FIG. 1(b)) that is 1 / 10 to 1 / 50 of the total length L of the filter element 1 in 10-inch equivalent.

[0050] Next, the radial plane V is a radial plane including the cylindrical central axis C-C. １ and V ２ The cut piece is divided into eighths with an included angle θ of 30 to 90°, for example, an included angle θ of 45°, to obtain sector cut pieces 1c (see FIG. 1(c)).

[0051] Next, the divided surfaces 3d and 3d' and the divided surfaces 4d and 4d' are sealed with plates 7d and 7d' and 8d and 8d' by heat welding and / or adhesive, to produce a sector-shaped cartridge 1d (see FIG. 1(d)).

[0052] In the example shown, the sector-shaped cartridge 1d is produced by cutting out the filter element 1 to form a short cylindrical body 1b (see FIG. 1(b)). However, if the filter element 1 is practically short, and the thickness Ld is approximately 5 mm or more when the filter element 1 is cut into 1 / 10 to 1 / 50 of its 10-inch length, the filter element 1 may be divided into sectors (see FIG. 1(d)) without being cut out as shown in FIG. 1(b).

[0053] Next, a sector-shaped cartridge housing 20 using the sector-shaped cartridge 1d will be described with reference to FIG.

[0054] The sector-shaped cartridge housing 20 is a liquid-tight integrated unit of a sector-shaped housing main body 23 that houses the sector-shaped cartridge 1d and a housing cap 21 that covers the sector-shaped housing main body 23.

[0055] The outer shape of the sector-shaped housing body 23 is not particularly limited, but may be, for example, an inverted truncated cone shape or an inverted truncated square pyramid shape tapering downward, with a flange 27 on the larger diameter upper side, and an internal cartridge storage section 24 opened into which the sector-shaped cartridge 1d can be inserted and stored.

[0056] The sectorial cartridge 1d fits into this internal cartridge accommodating portion 24. This internal cartridge accommodating portion 24 is adapted to contact the plates 7d, 7d' and 8d, 8d' of the sectorial cartridge 1d. The internal cartridge accommodating portion 24 has cartridge accommodating portion side surfaces 24a and 24a' that face each other in parallel across the width of the thickness Ld (see FIG. 1(d)) of the sectorial cartridge 1d, internal cartridge accommodating portion side surfaces 24b and 24b' that are inclined at an included angle θ so as to contact the dividing surfaces 4d and 4d' of the sectorial cartridge 1d, and a cartridge accommodating portion bottom surface 24c that forms the bottom of the internal cartridge accommodating portion 24, and is a trapezoidal columnar shape that tapers downward.

[0057] This sectorial housing body 23 has an inverted truncated quadrangular pyramid shape with a uniform thickness, and the large diameter side of the inverted truncated quadrangular pyramid opens upward and faces downward toward the bottom surface 24c of the cartridge storage section, and has an inflow opening 25 through which liquid flows in, and an outflow opening 26 that penetrates the bottom surface 24c of the cartridge storage section and through which liquid that has passed through the sectorial cartridge 1d flows out, and is narrower than the openings 9 at the tapered tips of the plates 7d, 7d' and 8d, 8d' of the sectorial cartridge 1d and faces those openings 9.

[0058] The tapered tip openings 9 of the plates 7d, 7d' and 8d, 8d' of the sectorial cartridge 1d are flat and are tightly sealed with a sealing material such as a gasket that improves the seal with the cartridge storage compartment bottom 24c to prevent leakage of liquid that has passed through the sectorial cartridge 1d. Instead of the tapered tip openings 9 being tightly sealed with the cartridge storage compartment bottom 24c, the plates 7d, 7d' and 8d, 8d' of the sectorial cartridge 1d may be tightly sealed with the cartridge storage compartment side surfaces 24a (not shown), 24a', 24b, 24b' of the cartridge storage compartment 24 within the housing.

[0059] This cartridge storage section 24 within the housing has a sufficient depth so that when the sector-shaped cartridge 1d is inserted, it does not protrude from the inlet opening 25, and a sufficient bottom surface area to support the openings 9 at the tapered tip ends of the plates 7d, 7d' and 8d, 8d'.

[0060] The flange 27 of the sector-shaped housing body 23 has the same diameter as the housing cap 21, and the flange 27 and the housing cap 21 are fastened together with a clamp band (not shown) to form a liquid-tight unit.

[0061] The sector-shaped housing body 23 may have a circular groove 28 on the large diameter side or flange 27 into which a rubber packing 29 (gasket) is fitted to prevent liquid from leaking from the sector-shaped cartridge housing 20 .

[0062] On the other hand, the housing cap 21 is generally disk-shaped and has roughly the same diameter as the flange 27 of the sector-shaped housing main body 23. The housing cap 21 has an inlet 22 formed in the center through which an inlet pipe for introducing liquid passes, and the inlet 22 may be connected to the cartridge storage section 24 inside the housing.

[0063] The sectorial cartridge housing 20 is used for the evaluation method of the filter element by liquid-tightly integrating the sectorial housing main body 23 and the housing cap 21 covering it with a clamp band, screwed or welded, while the sectorial cartridge 1d is fitted and accommodated in the housing.

[0064] The sector-shaped housing body 23 and the housing cap 21 of the sector-shaped cartridge housing 20 may be made of resin or metal.

[0065] In addition, when the sectorial cartridge 1d does not have plates 7d, 7d' and 8d, 8d', the dividing surfaces 3d, 3d' and the dividing surfaces 4d, 4d' may be directly in contact with the cartridge storage section side surfaces 24a, 24a' and the cartridge storage section side surfaces 24b, 24b' and may be adhered and / or heat-sealed.

[0066] A sector-shaped cartridge housing 20 according to another embodiment using the sector-shaped cartridge 1d will be described in detail with reference to FIG. 3, focusing on differences from FIG.

[0067] The sector-shaped cartridge housing 20 shown in Figure 2 has a cartridge storage section 24 within the housing recessed in the shape of an inverted truncated cone or an inverted truncated pyramid so that the sector-shaped cartridge 1d can fit into it, and the plates 7d, 7d', 8d, and 8d' of the sector-shaped cartridge 1d are in tight contact with the bottom surface 24c of the cartridge storage section at the opening 9 on the tapered tip side, making it liquid-tight. On the other hand, in the sector-shaped cartridge housing 20 shown in FIG. 3, the housing internal cartridge storage section 24 is recessed in the shape of a mortar, i.e., an inverted truncated cone, and the tapered tip end opening 9 of the sector-shaped cartridge 1d is joined to a sealing base 9a that is disc-shaped with a through-hole 9d and slightly larger in diameter than the opening 9, from which a flange 9c protrudes. Below the sealing base 9a, a cylindrical sealing protrusion 9b with a slightly smaller diameter than the sealing base 9a and around which an O-ring 9e is wrapped extends while being integrated with the sealing base 9a. A large-diameter recess 24d is recessed and penetrates the thick bottom 23a of the housing internal cartridge storage section 24 of the sector-shaped housing main body 23 so that the sealing base 9a and the sealing protrusion 9b fit into each other. １ and small diameter recess 24d ２ It has the following characteristics.

[0068] Next, the evaluation method of the filter element 1 will be described with reference to FIG. 2, but the same applies to FIG.

[0069] First, the sector-shaped cartridge housing 20 is prepared, which has a sector-shaped cartridge made of the same material as the filter element 1 to be examined and has the same cross-sectional structure.

[0070] When the test liquid to be filtered by the filter element 1 begins to be injected through the inlet 22 of the housing cap 21, the test liquid enters the sectorial housing main body 23 as indicated by the thick arrow Pass A, passes through the sectorial cartridge 1d in the cartridge storage section 24 within the housing as indicated by the thick arrow Pass B, is filtered, and is discharged from the outflow opening 26 as indicated by the thick arrow Pass C.

[0071] If the number of filter elements 1 in the actual line and the amount of liquid to be filtered are determined, the flow rate for a small-volume test can be calculated from the volume ratio of the filter elements 1 to the sectorial cartridge 1d, and it can be determined whether the specified amount of liquid can be passed through various filter types. Also, if the amount of liquid to be passed is determined but the filter type and number of filters are not, the filter type can be determined from the evaluation data of the sectorial cartridge, and the number of filters required to pass the specified amount can be calculated.

[0072] The liquid capacity of the actual line can be calculated by converting the liquid capacity of the sectorial cartridge 1d (liquid capacity up to a specified differential pressure). Because the sectorial cartridge 1d is of the same quality as the filter element 1 of the cartridge of the actual line filtration device, the filtrate quality (particle removal efficiency) can be confirmed in the same way as the filtrate in the actual line.

[0073] According to this filter element evaluation method, filtration performance can be estimated and evaluated on a small scale by highly efficient and accurate extrapolation, regardless of the filter element, its material, quality, or manufacturer. Therefore, this method is highly versatile and contributes to time savings by improving workability.

[0074] The liquid to be filtered is not particularly limited as long as it is an industrial liquid raw material, and examples thereof include aqueous liquids exemplified by beverages such as mineral water, tea, coffee, and black tea, and purified water such as industrial pure water, ion-exchanged water, and RO water; organic liquids such as cooking oil, kerosene, gasoline, lubricating oil, organic solvents, resin binders, thermosetting resins, and photoresists; and various liquid raw materials such as paint, ink, rinse liquid, slurry, metal paste, and glass paste.

[0075] Examples to which the present invention is applied, as well as reference examples and comparative examples to which the present invention is not applied, will be described in detail below.

[0076] Example 1: Comparison between an existing miniaturization evaluation product and the sector-shaped cartridge 1d of the present invention A sector-shaped cartridge was prototyped and used in the filter element evaluation method. The filter element to be evaluated was a cylindrical filter element manufactured by ROKI TECHNO CORPORATION, product number 250L-SLF-003 (0.3 μm depth type filter) with a 10-inch size. As an existing miniaturization evaluation product (comparison 1), a LaboPure LPA capsule manufactured by ROKI TECHNO CORPORATION, which incorporates a 1-inch size cylindrical filter element of this existing shape, was used. On the other hand, as an example using a sectorial cartridge 1d, the above-mentioned cylindrical filter element 1 was cut and divided into pieces 10 mm long in the overall length direction (see FIG. 1(b)), and then cut and divided into pieces 45° sector-shaped (see FIG. 1(c)). The divided surfaces 3d and 3d' and the divided surfaces 4d and 4d' were heat-sealed with plates 7d and 7d' and 8d and 8d' (see FIG. 1(d)), thereby obtaining a sectorial cartridge 1d. This was then enclosed in a sectorial cartridge housing 20 (see FIG. 2) and subjected to evaluation. The LPA capsule was made of PP resin, and the sectorial cartridge housing 20 had a cap made of SUS and a body made of acrylic resin. For both the samples of Comparative Example 1 and Example 1, the PL-10H manufactured by Fuso Chemical Co., Ltd. was used as the test liquid. The liquid was passed through the fan-shaped cartridge 1d of Example 1 at a flow rate of 200 mL / min for Comparative Example 1 and 13 mL / min for Example 1. The results of the increase in differential pressure for each sample are shown in FIG. 4.

[0077] As is clear from Figure 4, the pressure-time graph showing the history of applied pressure for the sector-shaped cartridge housing 20 using the sector-shaped cartridge 1d of Example 1 to which the present invention is applied shows a tendency for the pressure to gradually increase due to clogging, similar to that of the conventional LaboPure LPA, and the limit at which filtration becomes impossible is approximately the same time. This shows that, because the sector-shaped cartridge 1d of Example 1 is prepared by cutting it out from the filter element to be examined, it is possible to accurately and reliably extrapolate and estimate the performance of the filter element 1. It also shows that performance evaluation equivalent to that of the conventional LaboPure LPA is possible.

[0078] (Comparative Example 1: Comparison of an Existing Product for Evaluation of Miniaturization with an Existing Small-Quantity Evaluation Technology (Part 1)) The filter element to be evaluated was a cylindrical filter element manufactured by ROKI TECHNO CORPORATION, product model number 250L-SLS-005 (0.5 μm depth type). As an existing product for evaluation of miniaturization (Comparative Example 2), a LaboPure LPA capsule manufactured by ROKI TECHNO CORPORATION, which incorporates a 1-inch cylindrical filter element of this existing shape, was used. Meanwhile, as Comparative Example 1, an existing small-quantity evaluation technology (Part 1), each of the constituent nonwoven fabrics was cut into a φ25 mm sample, and the same number of layers as the number of sheets constituting the filter element to be evaluated were stacked to use the sample. Other than that, measurements were performed in the same manner as in Example 1. FIG. 5 shows the results of the increase in differential pressure for each sample when PL-10H manufactured by Fuso Chemical Co., Ltd. was used as the test liquid for both the samples of Comparative Example 2 and Comparative Example 1 at a flow rate of 200 mL / min for Comparative Example 2 and 70 mL / min for Comparative Example 1 (existing small-volume evaluation technology (part 1)).

[0079] As is clear from Figure 5, compared to the LPA capsule which contains a filter element made of compressed filter material, Comparative Example 1 is made of the same material as the LPA capsule but is simply stacked, so the filter material is not compressed and the roll pressure of the filter element cannot be reproduced, so impurities cannot be captured, they do not become clogged, and the differential pressure does not increase.

[0080] (Comparative Example 2: Comparison of an Existing Miniaturization Evaluation Product and an Existing Small-Volume Evaluation Technology (Part 2)) An existing miniaturization evaluation product (Comparative Example 2) similar to Comparative Example 1 was used. Meanwhile, for Comparative Example 2, which is an existing small-volume evaluation technology (Part 2), each of the constituent nonwoven fabrics was cut to a diameter of 25 mm, stacked in the same number as the number of sheets constituting the filter element to be evaluated, and compressed to a filtration layer thickness similar to that of the filter element, which was then used as a sample. For both the Comparative Example 2 and Comparative Example 2 samples, PL-10H manufactured by Fuso Chemical Co., Ltd. was passed through the test liquid at a flow rate of 200 mL / min for Comparative Example 2 and 70 mL / min for Comparative Example 1, an existing small-volume evaluation technology (Part 2). The results of the differential pressure increase for each sample are shown in Figure 6.

[0081] As is clear from Figure 6, in Comparative Example 2, in which the filter media was compressed, the pressurized pressure became higher over time than in Comparative Example 2, and leakage was observed from the end face of the filter media along the way, causing the increase in differential pressure to plateau. This is presumably because the compression improved the accuracy of particle capture compared to Comparative Example 2, making it possible to capture even finer particles, causing clogging and an increase in differential pressure, but gradually the pressure rose too much, causing the filtrate to short-pass from the end face of the filter media, causing the differential pressure to plateau.

[0082] (Comparative Example 3: Comparison of an Existing Miniaturization Evaluation Product and an Existing Small-Volume Evaluation Technology (Part 3)) An existing miniaturization evaluation product (Comparative Example 2) similar to Comparative Example 1 was used. On the other hand, for Comparative Example 3, which is an existing small-volume evaluation technology (Part 3), each of the constituent nonwoven fabrics was cut to a diameter of 25 mm, stacked in the same number as the number of sheets constituting the comparative filter element, compressed to a filtration layer thickness similar to that of the built-in filter, and then the filter media end surface was caulked to prevent leaks. For both Comparative Example 2 and Comparative Example 3, PL-10H manufactured by Fuso Chemical Co., Ltd. was used as the test liquid. The results of the differential pressure increase in each sample when the liquid was passed through the sample at a flow rate of 200 mL / min for Comparative Example 2 and 70 mL / min for Comparative Example 3's existing small-volume evaluation technology (Part 3) are shown in Figure 7.

[0083] As is clear from Figure 7, in Comparative Example 3, in which the filter media was compressed to prevent leaks, the pressurization pressure became higher over time than in Comparative Example 2. No short-path leakage from the filter media end face was observed during the test, but clogging was observed earlier than in Comparative Example 2, the standard LPA capsule type. The reason for this is thought to be as follows. While the actual LPA capsule has different compression pressures for each layer, Comparative Examples 2 and 3 simply compress the entire LPA capsule to the same thickness. Therefore, there is a difference in the way each layer collapses compared to the filter element built into the LPA capsule, where the liquid passage area decreases from the outer layer to the inner layer along the liquid passage path. In Comparative Examples 2 and 3, both the outer and inner layers are φ25 mm, so the converted flow rate differs depending on the layer that contributes to capture. In this case, the flow rate is set to 1 / 3 because the filtration area of ​​the innermost layer is the target.

[0084] As is clear from these results, the sectorial cartridge housing 20 using the sectorial cartridge 1d of Example 1 to which the present invention is applied can accurately and reliably extrapolate and evaluate filtration performance such as suitability for use and limit time or limit amount of use using the filter element evaluation method, simply by using 1 / 10 of the test liquid used in Reference Example 1, demonstrating reproducibility and evaluation performance equal to or better than that of the conventional commercially available LaboPure LPA. Moreover, while the conventional small-volume testing method (φ25 mm) used for single-layer filters such as pleated filters cannot reproduce thick, stacked filters such as depth-type filters, it was found that this is possible with the sectorial cartridge to which the present invention is applied.

[0085] The filter element evaluation method using the sectorial cartridge housing 20 with the sectorial cartridge of the present invention can be used to accurately and reliably extrapolate and evaluate the suitability of the filter element as a filtering material for filtering industrial liquid raw materials, etc., and its filtering performance, such as its limit time or limit amount of use.

[0086] 1 is a filter element, 1b is a short cylindrical body, 1c is a sector-shaped cut body, 1d is a sector-shaped cartridge, 2 is a nonwoven fabric (end surface), 3b and 3b' are divided surfaces, 3c, 3c', 3d and 3d' are divided surfaces, 4c and 4c' are divided surfaces, 4d and 4d' are divided surfaces, 5a is an outer periphery, 5b is an outer periphery surface, 5c is an outer periphery arc surface, 5d is an outer periphery arc surface, 6 is an inner cavity, 6a is an inner core, 6b is an inner cavity surface, 6c is an inner cavity arc surface, 6d is an inner cavity arc surface, 7d and 7d' are plates, 8d and 8d' are plates, 9 is an opening on the tapered tip side, 9a is a sealing base, 9b is a sealing protrusion, 9c is a flange, 9d is a through hole, 9e is an O-ring, 10 is a filter cartridge, 13 is an inlet, 14 is an air vent opening, 16 is an outlet, 20 is a sectorial cartridge housing, 21 is a housing cap, 22 is an inlet, 23 is a sectorial housing body, 23a is a thick bottom, 24 is a cartridge storage section inside the housing, 24a is a side surface of the cartridge storage section, 24b is a side surface of the cartridge storage section, 24c is a bottom surface of the cartridge storage section, 24d １ is a large diameter recess, 24d ２denotes a small diameter recess, 25 denotes an inlet opening, 26 denotes an outlet opening, 27 denotes a flange, 28 denotes a groove, 29 denotes a packing, 100 denotes a filter housing, 101 denotes a housing cover, 102 denotes a housing base, θ denotes an included angle, CC denotes a cylinder central axis, H １ is a vertical plane, H ２ is the vertical plane, F １ is the flow path, F ２ is the flow path, L is the total length, Lb is the thickness, Lc is the thickness, Ld is the thickness, V １ is the radiation surface, V ２ is the radiation surface, and PassA, PassB, and PassC are the flows.

Claims

1. A sector cartridge in which a cylindrical practical filter element that filters by allowing a liquid to be filtered to flow from the outer peripheral side to the inner cavity side is exposed as it is in the direction perpendicular to its central axis along the central axis direction of the cylinder or is segmented in the direction perpendicular to its central axis to be shortened, and is in a shape divided into sectors by a radial plane including the central axis of the cylinder, wherein each surface of the cross-sectional plane along the direction perpendicular to the axis and the dividing plane along the radial plane in the sector cartridge is sealed so that the liquid does not leak.

2. The sector cartridge according to claim 1, wherein each surface of the cross-sectional plane and the dividing plane is heat-welded to a cartridge storage portion in a housing, caulked with a caulking material, adhered with an adhesive, sealed with a sealing agent, and / or heat-welded to a plate to be sealed.

3. The sector cartridge according to claim 1, wherein the filter element is a wound filter element, a depth pleat filter element, a pleat filter element, or a depth filter element.

4. The sector cartridge according to claim 1, wherein the caulking material, the adhesive, the sealing agent, and / or the plate is an adhesive material that fixes a resin nonwoven fabric or yarn forming the filter element and / or is made of the same material as the resin.

5. The sector cartridge according to claim 1, wherein the sector cartridge is shortened to 1 / 10 to 1 / 50 in terms of the 10-inch length conversion of the practical filter element, and the included angle between the dividing planes is 30 to 90°.

6. The sector cartridge according to claim 2, wherein the opening at the tapered tip side of the plate is disk-shaped and is liquid-tightly joined to a sealing pedestal having a through-hole in the center.

7. The sector cartridge according to claim 6, wherein a thick bottom extends to the bottom side of the sealing pedestal, and an O-ring having a diameter larger than the cylinder diameter of the thick bottom is wound around the thick bottom.

8. A sector cartridge housing that fits and houses the sector cartridge according to claim 1, a sector housing body having a liquid inlet opening and an outlet opening that are opened in the sector cartridge housing in the housing and face the outer peripheral side and the inner cavity side of the sector cartridge respectively, and a housing cap that covers the sector housing body and has an injection port for injecting liquid flowing from the outer peripheral side to the inner cavity side of the sector cartridge while closing the opening, wherein the sector cartridge housing is integrally sealed in a liquid-tight manner.

9. The sector cartridge housing according to claim 8, wherein each surface of the split cross-section and the split surface is heat-welded to the sector cartridge housing in the housing, caulked with a caulking material, adhered with an adhesive, sealed with a sealant, and / or heat-welded to a plate and sealed.

10. The sector cartridge housing according to claim 9, wherein the opening on the tapered tip side of the plate is liquid-tightly joined to a disk-shaped sealing pedestal having a through-hole in the center.

11. The sector cartridge housing according to claim 10, wherein a thick bottom extends to the bottom side of the sealing pedestal, the O-ring having a diameter larger than its cylindrical diameter is wound around the thick bottom, and the thick bottom together with the O-ring is liquid-tightly fitted into the sector housing body.

12. A cylindrical filter element through which the liquid to be filtered flows from the outer peripheral side to the inner cavity side is left exposed along the direction perpendicular to its cylindrical central axis or cut along the direction perpendicular to its cylindrical central axis and segmented to be shortened, and further cut and divided into sectors by a radial plane including the cylindrical central axis. A step of preparing the sector cartridge by sealing the exposed perpendicular plane or the cross-sectional plane along the direction perpendicular to the cylindrical central axis and the dividing plane along the direction of the radial plane so that the liquid does not leak; a housing inner cartridge storage portion for fitting and accommodating the sector cartridge; and a sector housing body having an inflow opening and an outflow opening for the liquid, which are opened in the housing inner cartridge storage portion and respectively face the outer peripheral side and the inner cavity side of the sector cartridge. A step of fitting and accommodating the sector cartridge in the housing inner cartridge storage portion; and a housing cap that covers the sector housing body and has an injection port for injecting the liquid flowing from the outer peripheral side to the inner cavity side of the sector cartridge while closing the opening. A step of closing and integrating the sector housing body with the housing cap. A method for manufacturing a sector cartridge housing, characterized by comprising the above steps.

13. The method for manufacturing a sector cartridge housing according to claim 12, characterized in that each surface of the cross-sectional plane and the dividing plane is heat-welded to the housing inner cartridge storage portion, caulked with a caulking material, adhered with an adhesive, sealed with a sealant, and / or heat-welded to a plate to effect sealing.

14. A method for evaluating a filter element using the sector cartridge housing according to claim 8, comprising: a step of filtering the liquid to be filtered by the filter element by flowing it into the sector cartridge housing from the injection port and flowing it out from the outflow opening; and a step of evaluating the performance of the filter element by collecting the filtrate of the liquid to be filtered from the sector cartridge or measuring the differential pressure, filtration time, and / or filtrate volume by the liquid to be filtered and upscaling the liquid volume to a dosage. A method for evaluating a filter element, characterized by comprising the above steps.

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